Update version to 2.1.2. (mruby 2.1.2 RC)

This reverts commit 9cdf439db5.

.github/workflows/build.yml

@@ -0,0 +1,106 @@
+name: Build & Test
+
+on: [push, pull_request]
+
+jobs:
+  Ubuntu-1604:
+    runs-on: ubuntu-16.04
+    steps:
+    - uses: actions/checkout@v1
+    - name: apt
+      run: sudo apt install ruby gperf
+    - name: build and test
+      run: rake -m -j4 all test
+      env:
+        MRUBY_CONFIG: travis_config.rb
+
+  Ubuntu-1804-gcc:
+    runs-on: ubuntu-18.04
+    steps:
+    - uses: actions/checkout@v1
+    - name: apt
+      run: sudo apt install ruby gperf gcc g++
+    - name: build and test
+      run: rake -m -j4 all test
+      env:
+        MRUBY_CONFIG: travis_config.rb
+        CC: gcc
+        CXX: g++
+
+  Ubuntu-1804-clang:
+    runs-on: ubuntu-18.04
+    steps:
+    - uses: actions/checkout@v1
+    - name: apt
+      run: sudo apt install ruby gperf
+    - name: build and test
+      run: rake -m -j4 all test
+      env:
+        MRUBY_CONFIG: travis_config.rb
+        CC: clang
+        CXX: clang++
+
+  macOS:
+    runs-on: macos-latest
+    steps:
+    - uses: actions/checkout@v1
+    - name: brew
+      run: brew install ruby gperf
+    - name: build and test
+      run: rake -m -j4 all test
+      env:
+        MRUBY_CONFIG: travis_config.rb
+
+  Windows-MinGW:
+    runs-on: windows-latest
+    steps:
+    - uses: actions/checkout@v1
+    - name: chocolatey
+      run: choco install -y ruby gperf
+    - name: build and test
+      run: rake -E '$stdout.sync=true' -j4 test
+      env:
+        MRUBY_CONFIG: travis_config.rb
+        CFLAGS: -g -O1 -Wall -Wundef
+
+  Windows-Cygwin:
+    runs-on: windows-latest
+    steps:
+    - uses: actions/checkout@v1
+    - uses: actions/cache@v1
+      with:
+        path: C:\Users\runneradmin\AppData\Local\Temp\chocolatey
+        key: ${{ runner.os }}-cygwin-chocolatey-${{ matrix.os }}-${{ github.sha }}
+        restore-keys: |
+          ${{ runner.os }}-cygwin-chocolatey-${{ matrix.os }}-
+          ${{ runner.os }}-cygwin-chocolatey-
+    - name: chocolatey
+      run: choco install -y cygwin
+    - name: Install cygwin packages
+      shell: cmd
+      run: C:\tools\cygwin\cygwinsetup.exe -qgnNdO -R C:/tools/cygwin -l C:/tools/cygwin/package -s http://mirrors.kernel.org/sourceware/cygwin/ -P gcc-core,gcc-g++,make,gperf,ruby
+    - name: Set ENV
+      run: |
+        echo '::set-env name=PATH::C:\tools\cygwin\bin;C:\tools\cygwin\usr\bin'
+    - name: build and test
+      shell: cmd
+      run: C:\tools\cygwin\bin\ruby.exe /usr/bin/rake -m -j4 -E 'STDOUT.sync=true' test
+      env:
+        MRUBY_CONFIG: travis_config.rb
+
+  Windows-VC:
+    runs-on: windows-latest
+    steps:
+    - uses: actions/checkout@v1
+    - name: chocolatey
+      run: choco install -y ruby gperf
+    - name: build and test
+      shell: cmd
+      run: |
+        call "C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Auxiliary\Build\vcvars64.bat"
+        rake -E "STDOUT.sync=true" -m -j4 test
+      env:
+        MRUBY_CONFIG: appveyor_config.rb
+        # TODO(take-cheeze): Re-enable /O2
+        CFLAGS: "/c /nologo /W3 /we4013 /Zi /MD /D_CRT_SECURE_NO_WARNINGS"
+        CXXFLAGS: "/c /nologo /W3 /Zi /MD /EHs /D_CRT_SECURE_NO_WARNINGS"

.github/workflows/codeql-analysis.yml

@@ -0,0 +1,51 @@
+name: "Code scanning - action"
+
+on:
+  push:
+  pull_request:
+  schedule:
+    - cron: '0 19 * * 4'
+
+jobs:
+  CodeQL-Build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v2
+      with:
+        # We must fetch at least the immediate parents so that if this is
+        # a pull request then we can checkout the head.
+        fetch-depth: 2
+
+    # If this run was triggered by a pull request event, then checkout
+    # the head of the pull request instead of the merge commit.
+    - run: git checkout HEAD^2
+      if: ${{ github.event_name == 'pull_request' }}
+      
+    # Initializes the CodeQL tools for scanning.
+    - name: Initialize CodeQL
+      uses: github/codeql-action/init@v1
+      # Override language selection by uncommenting this and choosing your languages
+      # with:
+      #   languages: go, javascript, csharp, python, cpp, java
+
+    # Autobuild attempts to build any compiled languages  (C/C++, C#, or Java).
+    # If this step fails, then you should remove it and run the build manually (see below)
+    - name: Autobuild
+      uses: github/codeql-action/autobuild@v1
+
+    # ℹ️ Command-line programs to run using the OS shell.
+    # 📚 https://git.io/JvXDl
+
+    # ✏️ If the Autobuild fails above, remove it and uncomment the following three lines
+    #    and modify them (or add more) to build your code if your project
+    #    uses a compiled language
+
+    #- run: |
+    #   make bootstrap
+    #   make release
+
+    - name: Perform CodeQL Analysis
+      uses: github/codeql-action/analyze@v1

.github/workflows/main.yml

@@ -0,0 +1,24 @@
+name: CIFuzz
+on: [pull_request]
+jobs:
+  Fuzzing:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Build Fuzzers
+      uses: google/oss-fuzz/infra/cifuzz/actions/build_fuzzers@master
+      with:
+        oss-fuzz-project-name: 'mruby'
+        dry-run: false
+    - name: Run Fuzzers
+      uses: google/oss-fuzz/infra/cifuzz/actions/run_fuzzers@master
+      with:
+        oss-fuzz-project-name: 'mruby'
+        fuzz-seconds: 600
+        dry-run: false
+    - name: Upload Crash
+      uses: actions/upload-artifact@v1
+      if: failure()
+      with:
+        name: artifacts
+        path: ./out/artifacts
+

.gitignore

@@ -1,3 +1,4 @@
+*.lock
 *.bak
 *.bc
 *.d
@@ -16,6 +17,9 @@
 .svn
 .vscode
 .yardoc
+.ccls*
+compile_flags.txt
+compile_commands.json
 cscope.files
 cscope.out
 tags
@@ -30,5 +34,4 @@ tags
 /benchmark/*.png
 
 /doc/api
-
-/src/y.tab.c
+/doc/capi

.travis.yml

@@ -1,19 +1,11 @@
 language: c
 
-sudo: false
-
-matrix:
-  include:
-    - os: linux
-      sudo: false
-    - os: osx
-      osx_image: xcode7.1
-
-addons:
-  apt:
-    packages:
-      - gperf
+jobs:
+  - os: linux
+  - os: osx
 
 env:
   - MRUBY_CONFIG=travis_config.rb
-script: "./minirake -j4 all test"
+
+script:
+  - rake -m && rake test

AUTHORS

@@ -42,3 +42,4 @@ of this list.
    Masahiro Wakame
    YAMAMOTO Masaya
    KOBAYASHI Shuji
+   RIZAL Reckordp

CONTRIBUTING.md

@@ -9,7 +9,7 @@ things in mind before submitting your pull request:
 
 * Work on the latest possible state of **mruby/master**
 * Create a branch which is dedicated to your change
-* Test your changes before creating a pull request (```./minirake test```)
+* Test your changes before creating a pull request (```rake test```)
 * If possible write a test case which confirms your change
 * Don't mix several features or bug-fixes in one pull request
 * Create a meaningful commit message
@@ -33,9 +33,16 @@ mruby should be highly portable to other systems and compilers. For this it is
 recommended to keep your code as close as possible to the C99 standard
 (http://www.open-std.org/jtc1/sc22/WG14/www/docs/n1256.pdf).
 
-Although we target C99, Visual C++ is also an important target for mruby. For
-this reason a declaration of a local variable has to be at the beginning of a
-scope block.
+Although we target C99, we've heard some compilers in the embedded environment
+still requires declarations of local variables to be at the beginning of a
+scope. Until we confirm the situation has changed, we use the old-style
+variable declaration.
+
+Visual C++ is also an important target for mruby (supported version is 2013 or
+later). For this reason features that are not supported by Visual C++ may not
+be used (e.g. `%z` of `strftime()`).
+
+NOTE: Old GCC requires `-std=gnu99` option to enable C99 support.
 
 #### Reduce library dependencies to a minimum
 

LICENSE

@@ -1,4 +1,4 @@
-Copyright (c) 2019 mruby developers
+Copyright (c) 2020 mruby developers
 
 Permission is hereby granted, free of charge, to any person obtaining a
 copy of this software and associated documentation files (the "Software"),

Makefile

@@ -1,8 +1,6 @@
 # mruby is using Rake (http://rake.rubyforge.org) as a build tool.
-# We provide a minimalistic version called minirake inside of our
-# codebase.
 
-RAKE = ruby ./minirake
+RAKE = rake
 
 all :
 	$(RAKE)

README.md

@@ -3,7 +3,7 @@
 ## What is mruby
 
 mruby is the lightweight implementation of the Ruby language complying to (part
-of) the [ISO standard][ISO-standard]. Its syntax is Ruby 1.9 compatible.
+of) the [ISO standard][ISO-standard]. Its syntax is Ruby 2.x compatible.
 
 mruby can be linked and embedded within your application.  We provide the
 interpreter program "mruby" and the interactive mruby shell "mirb" as examples.
@@ -17,7 +17,7 @@ of the Ministry of Economy, Trade and Industry of Japan.
 
 ## How to get mruby
 
-The stable version 2.0.1 of mruby can be downloaded via the following URL: [https://github.com/mruby/mruby/archive/2.0.1.zip](https://github.com/mruby/mruby/archive/2.0.1.zip)
+The stable version 2.1.2 of mruby can be downloaded via the following URL: [https://github.com/mruby/mruby/archive/2.1.2.zip](https://github.com/mruby/mruby/archive/2.1.2.zip)
 
 The latest development version of mruby can be downloaded via the following URL: [https://github.com/mruby/mruby/zipball/master](https://github.com/mruby/mruby/zipball/master)
 
@@ -30,36 +30,49 @@ You can also install and compile mruby using [ruby-install](https://github.com/p
 
 ## mruby home-page
 
-The URL of the mruby home-page is: [http://www.mruby.org](http://www.mruby.org).
+The URL of the mruby home-page is: https://mruby.org.
 
 ## Mailing list
 
-We don't have a mailing list, but you can use [GitHub issues](https://github.com/mruby/mruby).
+We don't have a mailing list, but you can use [GitHub issues](https://github.com/mruby/mruby/issues).
 
 ## How to compile and install (mruby and gems)
 
-See the [doc/guides/compile.md](doc/guides/compile.md) file.
+See the [compile.md](https://github.com/mruby/mruby/blob/master/doc/guides/compile.md) file.
 
 ## Running Tests
 
 To run the tests, execute the following from the project's root directory.
 
-    $ make test
+    $ rake test
 
-Or
+Note: `bison` bundled with MacOS is too old to compile `mruby`.
+Try `brew install bison` and follow the instuction shown to update
+the `$PATH` to compile `mruby`.
 
-    $ ruby ./minirake test
+## Building documentation
+
+There are two sets of documentation in mruby: the mruby API (generated by yard) and C API (Doxygen)
+
+To build both of them, simply go
+
+    rake doc
+
+You can also view them in your browser
+
+    rake view_api
+    rake view_capi
 
 ## How to customize mruby (mrbgems)
 
 mruby contains a package manager called *mrbgems*. To create extensions
 in C and/or Ruby you should create a *GEM*. For a documentation of how to
-use mrbgems consult the file [doc/guides/mrbgems.md](doc/guides/mrbgems.md). For example code of
-how to use mrbgems look into the folder *examples/mrbgems/*.
+use mrbgems consult the file [mrbgems.md](https://github.com/mruby/mruby/blob/master/doc/guides/mrbgems.md).
+For example code of how to use mrbgems look into the folder *examples/mrbgems/*.
 
 ## License
 
-mruby is released under the [MIT License](LICENSE).
+mruby is released under the [MIT License](https://github.com/mruby/mruby/blob/master/LICENSE).
 
 ## Note for License
 
@@ -88,5 +101,5 @@ file in your pull request.
 
 [ISO-standard]: http://www.iso.org/iso/iso_catalogue/catalogue_tc/catalogue_detail.htm?csnumber=59579
 [build-status-img]: https://travis-ci.org/mruby/mruby.svg?branch=master
-[contribution-guidelines]: CONTRIBUTING.md
+[contribution-guidelines]: https://github.com/mruby/mruby/blob/master/CONTRIBUTING.md
 [travis-ci]: https://travis-ci.org/mruby/mruby

Rakefile

@@ -5,12 +5,13 @@ MRUBY_ROOT = File.dirname(File.expand_path(__FILE__))
 MRUBY_BUILD_HOST_IS_CYGWIN = RUBY_PLATFORM.include?('cygwin')
 MRUBY_BUILD_HOST_IS_OPENBSD = RUBY_PLATFORM.include?('openbsd')
 
+Rake.verbose(false) if Rake.verbose == Rake::DSL::DEFAULT
+
 $LOAD_PATH << File.join(MRUBY_ROOT, "lib")
 
 # load build systems
 require "mruby-core-ext"
 require "mruby/build"
-require "mruby/gem"
 
 # load configuration file
 MRUBY_CONFIG = (ENV['MRUBY_CONFIG'] && ENV['MRUBY_CONFIG'] != '') ? ENV['MRUBY_CONFIG'] : "#{MRUBY_ROOT}/build_config.rb"
@@ -31,12 +32,12 @@ load "#{MRUBY_ROOT}/tasks/libmruby.rake"
 load "#{MRUBY_ROOT}/tasks/benchmark.rake"
 
 load "#{MRUBY_ROOT}/tasks/gitlab.rake"
+load "#{MRUBY_ROOT}/tasks/doc.rake"
 
 def install_D(src, dst)
-  opts = { :verbose => $verbose }
-  FileUtils.rm_f dst, opts
-  FileUtils.mkdir_p File.dirname(dst), opts
-  FileUtils.cp src, dst, opts
+  rm_f dst
+  mkdir_p File.dirname(dst)
+  cp src, dst
 end
 
 ##############################
@@ -62,7 +63,7 @@ MRuby.each_target do |target|
     relative_from_root = gem.dir.relative_path_from(MRUBY_ROOT)
     current_build_dir = File.expand_path "#{build_dir}/#{relative_from_root}"
 
-    if current_build_dir !~ /^#{build_dir}/
+    if current_build_dir !~ /^#{Regexp.escape(build_dir)}/
       current_build_dir = "#{build_dir}/mrbgems/#{gem.name}"
     end
 
@@ -118,6 +119,7 @@ task :all => depfiles do
   MRuby.each_target do
     print_build_summary
   end
+  MRuby::Lockfile.write
 end
 
 desc "run all mruby tests"
@@ -143,26 +145,16 @@ end
 desc "clean all built and in-repo installed artifacts"
 task :clean do
   MRuby.each_target do |t|
-    FileUtils.rm_rf t.build_dir, { :verbose => $verbose }
+    rm_rf t.build_dir
   end
-  FileUtils.rm_f depfiles, { :verbose => $verbose }
+  rm_f depfiles
   puts "Cleaned up target build folder"
 end
 
 desc "clean everything!"
-task :deep_clean => ["clean"] do
+task :deep_clean => ["clean", "clean_doc"] do
   MRuby.each_target do |t|
-    FileUtils.rm_rf t.gem_clone_dir, { :verbose => $verbose }
+    rm_rf t.gem_clone_dir
   end
   puts "Cleaned up mrbgems build folder"
 end
-
-desc 'generate document'
-task :doc do
-  begin
-    sh "mrbdoc"
-  rescue
-    puts "ERROR: To generate documents, you should install yard-mruby gem."
-    puts "  $ gem install yard-mruby"
-  end
-end

appveyor.yml

@@ -4,20 +4,23 @@ os: Visual Studio 2017
 
 shallow_clone: true
 
-
-cache:
-  - win_flex_bison
-
-
 environment:
   matrix:
     # Visual Studio 2017 64bit
     - visualcpp: C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Auxiliary\Build\vcvars64.bat
 
+    # Visual Studio 2017 32bit
+    - visualcpp: C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Auxiliary\Build\vcvarsall.bat
+      machine: x86
+
     # Visual Studio 2015 64bit
     - visualcpp: C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\vcvarsall.bat
       machine: amd64
 
+    # Visual Studio 2015 32bit
+    - visualcpp: C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\vcvarsall.bat
+      machine: x86
+
     # Visual Studio 2013 64bit
     - visualcpp: C:\Program Files (x86)\Microsoft Visual Studio 12.0\VC\vcvarsall.bat
       machine: amd64
@@ -30,13 +33,7 @@ init:
   - ruby --version
 
 
-install:
-  - if not exist win_flex_bison (
-      appveyor DownloadFile "https://github.com/lexxmark/winflexbison/releases/download/v.2.5.10/win_flex_bison-2.5.10.zip" &
-      7z x -y -owin_flex_bison win_flex_bison-2.5.10.zip
-    )
-
 build_script:
-  - set YACC=.\win_flex_bison\win_bison.exe
   - set MRUBY_CONFIG=appveyor_config.rb
+  - rake -m
   - rake -E $stdout.sync=true test

appveyor_config.rb

@@ -1,14 +1,7 @@
-MRuby::Build.new('debug') do |conf|
-  toolchain :visualcpp
-  enable_debug
-
-  # include all core GEMs
-  conf.gembox 'full-core'
-  conf.compilers.each do |c|
-    c.defines += %w(MRB_GC_STRESS MRB_GC_FIXED_ARENA MRB_METHOD_CACHE)
-  end
-
-  build_mrbc_exec
+def setup_option(conf)
+  conf.cc.flags[0].delete("/Zi") unless ENV['CFLAGS']
+  conf.cxx.flags[0].delete("/Zi") unless ENV['CFLAGS'] || ENV['CXXFLAGS']
+  conf.linker.flags << "/DEBUG:NONE" unless ENV['LDFLAGS']
 end
 
 MRuby::Build.new('full-debug') do |conf|
@@ -17,7 +10,8 @@ MRuby::Build.new('full-debug') do |conf|
 
   # include all core GEMs
   conf.gembox 'full-core'
-  conf.cc.defines = %w(MRB_ENABLE_DEBUG_HOOK)
+  conf.cc.defines += %w(MRB_GC_STRESS MRB_METHOD_CACHE MRB_ENABLE_DEBUG_HOOK)
+  setup_option(conf)
 
   conf.enable_test
 end
@@ -30,6 +24,7 @@ MRuby::Build.new do |conf|
   conf.compilers.each do |c|
     c.defines += %w(MRB_GC_FIXED_ARENA)
   end
+  setup_option(conf)
   conf.enable_bintest
   conf.enable_test
 end
@@ -41,6 +36,7 @@ MRuby::Build.new('cxx_abi') do |conf|
   conf.compilers.each do |c|
     c.defines += %w(MRB_GC_FIXED_ARENA)
   end
+  setup_option(conf)
   conf.enable_bintest
   conf.enable_test
 

build_config.rb

@@ -18,9 +18,9 @@ MRuby::Build.new do |conf|
   # end
   # conf.gem 'examples/mrbgems/c_and_ruby_extension_example'
   # conf.gem :core => 'mruby-eval'
-  # conf.gem :mgem => 'mruby-io'
-  # conf.gem :github => 'iij/mruby-io'
-  # conf.gem :git => 'git@github.com:iij/mruby-io.git', :branch => 'master', :options => '-v'
+  # conf.gem :mgem => 'mruby-onig-regexp'
+  # conf.gem :github => 'mattn/mruby-onig-regexp'
+  # conf.gem :git => 'git@github.com:mattn/mruby-onig-regexp.git', :branch => 'master', :options => '-v'
 
   # include the default GEMs
   conf.gembox 'default'
@@ -30,9 +30,9 @@ MRuby::Build.new do |conf|
   #   cc.flags = [ENV['CFLAGS'] || %w()]
   #   cc.include_paths = ["#{root}/include"]
   #   cc.defines = %w()
-  #   cc.option_include_path = '-I%s'
+  #   cc.option_include_path = %q[-I"%s"]
   #   cc.option_define = '-D%s'
-  #   cc.compile_options = "%{flags} -MMD -o %{outfile} -c %{infile}"
+  #   cc.compile_options = %Q[%{flags} -MMD -o "%{outfile}" -c "%{infile}"]
   # end
 
   # mrbc settings
@@ -50,25 +50,25 @@ MRuby::Build.new do |conf|
   #   linker.library_paths = []
   #   linker.option_library = '-l%s'
   #   linker.option_library_path = '-L%s'
-  #   linker.link_options = "%{flags} -o %{outfile} %{objs} %{libs}"
+  #   linker.link_options = "%{flags} -o "%{outfile}" %{objs} %{libs}"
   # end
 
   # Archiver settings
   # conf.archiver do |archiver|
   #   archiver.command = ENV['AR'] || 'ar'
-  #   archiver.archive_options = 'rs %{outfile} %{objs}'
+  #   archiver.archive_options = 'rs "%{outfile}" %{objs}'
   # end
 
   # Parser generator settings
   # conf.yacc do |yacc|
   #   yacc.command = ENV['YACC'] || 'bison'
-  #   yacc.compile_options = '-o %{outfile} %{infile}'
+  #   yacc.compile_options = %q[-o "%{outfile}" "%{infile}"]
   # end
 
   # gperf settings
   # conf.gperf do |gperf|
   #   gperf.command = 'gperf'
-  #   gperf.compile_options = '-L ANSI-C -C -p -j1 -i 1 -g -o -t -N mrb_reserved_word -k"1,3,$" %{infile} > %{outfile}'
+  #   gperf.compile_options = %q[-L ANSI-C -C -p -j1 -i 1 -g -o -t -N mrb_reserved_word -k"1,3,$" "%{infile}" > "%{outfile}"]
   # end
 
   # file extensions

doc/guides/compile.md

@@ -6,11 +6,15 @@ binaries.
 ## Prerequisites
 
 To compile mruby out of the source code you need the following tools:
-* C Compiler (i.e. ```gcc```)
-* Linker (i.e. ```gcc```)
-* Archive utility (i.e. ```ar```)
-* Parser generator (i.e. ```bison```)
-* Ruby 1.8 or 1.9 (i.e. ```ruby``` or ```jruby```)
+* C Compiler (e.g. `gcc` or `clang`)
+* Linker (e.g. `gcc` or `clang`)
+* Archive utility (e.g. `ar`)
+* Parser generator (e.g. `bison`)
+* Ruby 2.0 or later (e.g. `ruby` or `jruby`)
+
+Note that `bison` bundled with MacOS is too old to compile `mruby`.
+Try `brew install bison` and follow the instuction shown to update
+the `$PATH` to compile `mruby`.
 
 Optional:
 * GIT (to update mruby source and integrate mrbgems easier)
@@ -32,10 +36,10 @@ All tools necessary to compile mruby can be set or modified here. In case
 you want to maintain an additional *build_config.rb* you can define a
 customized path using the *$MRUBY_CONFIG* environment variable.
 
-To compile just call ```./minirake``` inside of the mruby source root. To
-generate and execute the test tools call ```./minirake test```. To clean
-all build files call ```./minirake clean```. To see full command line on
-build, call ```./minirake -v```.
+To compile just call `rake` inside of the mruby source root. To
+generate and execute the test tools call `rake test`. To clean
+all build files call `rake clean`. To see full command line on
+build, call `rake -v`.
 
 ## Build Configuration
 
@@ -79,7 +83,7 @@ toolchain :android
 ```
 
 Requires the custom standalone Android NDK and the toolchain path
-in ```ANDROID_STANDALONE_TOOLCHAIN```.
+in `ANDROID_STANDALONE_TOOLCHAIN`.
 
 ### Binaries
 
@@ -97,7 +101,7 @@ conf.gem "#{root}/mrbgems/mruby-bin-mirb"
 ### File Separator
 
 Some environments require a different file separator character. It is possible to
-set the character via ```conf.file_separator```.
+set the character via `conf.file_separator`.
 ```ruby
 conf.file_separator = '/'
 ```
@@ -119,7 +123,7 @@ end
 
 C Compiler has header searcher to detect installed library.
 
-If you need a include path of header file use ```search_header_path```:
+If you need a include path of header file use `search_header_path`:
 ```ruby
 # Searches ```iconv.h```.
 # If found it will return include path of the header file.
@@ -127,7 +131,7 @@ If you need a include path of header file use ```search_header_path```:
 fail 'iconv.h not found' unless conf.cc.search_header_path 'iconv.h'
 ```
 
-If you need a full file name of header file use ```search_header```:
+If you need a full file name of header file use `search_header`:
 ```ruby
 # Searches ```iconv.h```.
 # If found it will return full path of the header file.
@@ -136,11 +140,11 @@ iconv_h = conf.cc.search_header 'iconv.h'
 print "iconv.h found: #{iconv_h}\n"
 ```
 
-Header searcher uses compiler's ```include_paths``` by default.
+Header searcher uses compiler's `include_paths` by default.
 When you are using GCC toolchain (including clang toolchain since its base is gcc toolchain)
-it will use compiler specific include paths too. (For example ```/usr/local/include```, ```/usr/include```)
+it will use compiler specific include paths too. (For example `/usr/local/include`, `/usr/include`)
 
-If you need a special header search paths define a singleton method ```header_search_paths``` to C compiler:
+If you need a special header search paths define a singleton method `header_search_paths` to C compiler:
 ```ruby
 def conf.cc.header_search_paths
   ['/opt/local/include'] + include_paths
@@ -222,7 +226,7 @@ See doc/mrbgems/README.md for more option about mrbgems.
 
 Configuration Mrbtest build process.
 
-If you want mrbtest.a only, You should set ```conf.build_mrbtest_lib_only```
+If you want mrbtest.a only, You should set `conf.build_mrbtest_lib_only`
 ```ruby
 conf.build_mrbtest_lib_only
 ```
@@ -230,9 +234,9 @@ conf.build_mrbtest_lib_only
 ### Bintest
 
 Tests for mrbgem tools using CRuby.
-To have bintests place \*.rb scripts to ```bintest/``` directory of mrbgems.
-See ```mruby-bin-*/bintest/*.rb``` if you need examples.
-If you want a temporary files use `tempfile` module of CRuby instead of ```/tmp/```.
+To have bintests place \*.rb scripts to `bintest/` directory of mrbgems.
+See `mruby-bin-*/bintest/*.rb` if you need examples.
+If you want a temporary files use `tempfile` module of CRuby instead of `/tmp/`.
 
 You can enable it with following:
 ```ruby
@@ -247,8 +251,8 @@ correctly. To support mrbgems written in C++, mruby can be
 configured to use C++ exception.
 
 There are two levels of C++ exception handling. The one is
-```enable_cxx_exception``` that enables C++ exception, but
-uses C ABI. The other is ```enable_cxx_abi``` where all
+`enable_cxx_exception` that enables C++ exception, but
+uses C ABI. The other is `enable_cxx_abi` where all
 files are compiled by C++ compiler.
 
 When you mix C++ code, C++ exception would be enabled automatically.
@@ -266,7 +270,7 @@ C++ exception, add following:
 conf.disable_cxx_exception
 ```
 and you will get an error when you try to use C++ gem.
-Note that it must be called before ```enable_cxx_exception``` or ```gem``` method.
+Note that it must be called before `enable_cxx_exception` or `gem` method.
 
 ### Debugging mode
 
@@ -276,17 +280,17 @@ conf.enable_debug
 ```
 
 When debugging mode is enabled
-* Macro ```MRB_DEBUG``` would be defined.
-	* Which means ```mrb_assert()``` macro is enabled.
-* Debug information of irep would be generated by ```mrbc```.
-	* Because ```-g``` flag would be added to ```mrbc``` runner.
+* Macro `MRB_DEBUG` would be defined.
+	* Which means `mrb_assert()` macro is enabled.
+* Debug information of irep would be generated by `mrbc`.
+	* Because `-g` flag would be added to `mrbc` runner.
     * You can have better backtrace of mruby scripts with this.
 
 ## Cross-Compilation
 
 mruby can also be cross-compiled from one platform to another. To
 achieve this the *build_config.rb* needs to contain an instance of
-```MRuby::CrossBuild```. This instance defines the compilation
+`MRuby::CrossBuild`. This instance defines the compilation
 tools and flags for the target platform. An example could look
 like this:
 ```ruby
@@ -298,12 +302,12 @@ MRuby::CrossBuild.new('32bit') do |conf|
 end
 ```
 
-All configuration options of ```MRuby::Build``` can also be used
-in ```MRuby::CrossBuild```.
+All configuration options of `MRuby::Build` can also be used
+in `MRuby::CrossBuild`.
 
 ### Mrbtest in Cross-Compilation
 
-In cross compilation, you can run ```mrbtest``` on emulator if
+In cross compilation, you can run `mrbtest` on emulator if
 you have it by changing configuration of test runner.
 ```ruby
 conf.test_runner do |t|
@@ -350,15 +354,15 @@ in *build/host/src*)
 result will be stored in *build/host/src/y.tab.c*)
 * compile  *build/host/src/y.tab.c* to  *build/host/src/y.tab.o*
 * create *build/host/lib/libmruby_core.a* out of all object files (C only)
-* create ```build/host/bin/mrbc``` by compiling *tools/mrbc/mrbc.c* and
+* create `build/host/bin/mrbc` by compiling *tools/mrbc/mrbc.c* and
 linking with *build/host/lib/libmruby_core.a*
 * create *build/host/mrblib/mrblib.c* by compiling all \*.rb files
-under *mrblib* with ```build/host/bin/mrbc```
+under *mrblib* with `build/host/bin/mrbc`
 * compile *build/host/mrblib/mrblib.c* to *build/host/mrblib/mrblib.o*
 * create *build/host/lib/libmruby.a* out of all object files (C and Ruby)
-* create ```build/host/bin/mruby``` by compiling *mrbgems/mruby-bin-mruby/tools/mruby/mruby.c* and
+* create `build/host/bin/mruby` by compiling *mrbgems/mruby-bin-mruby/tools/mruby/mruby.c* and
 linking with *build/host/lib/libmruby.a*
-* create ```build/host/bin/mirb``` by compiling *mrbgems/mruby-bin-mirb/tools/mirb/mirb.c* and
+* create `build/host/bin/mirb` by compiling *mrbgems/mruby-bin-mirb/tools/mirb/mirb.c* and
 linking with *build/host/lib/libmruby.a*
 
 ```
@@ -427,15 +431,15 @@ in *build/i386/src*)
 result will be stored in *build/i386/src/y.tab.c*)
 * cross-compile *build/i386/src/y.tab.c* to *build/i386/src/y.tab.o*
 * create *build/i386/mrblib/mrblib.c* by compiling all \*.rb files
-under *mrblib* with the native ```build/host/bin/mrbc```
+under *mrblib* with the native `build/host/bin/mrbc`
 * cross-compile *build/host/mrblib/mrblib.c* to *build/host/mrblib/mrblib.o*
 * create *build/i386/lib/libmruby.a* out of all object files (C and Ruby)
-* create ```build/i386/bin/mruby``` by cross-compiling *mrbgems/mruby-bin-mruby/tools/mruby/mruby.c* and
+* create `build/i386/bin/mruby` by cross-compiling *mrbgems/mruby-bin-mruby/tools/mruby/mruby.c* and
 linking with *build/i386/lib/libmruby.a*
-* create ```build/i386/bin/mirb``` by cross-compiling *mrbgems/mruby-bin-mirb/tools/mirb/mirb.c* and
+* create `build/i386/bin/mirb` by cross-compiling *mrbgems/mruby-bin-mirb/tools/mirb/mirb.c* and
 linking with *build/i386/lib/libmruby.a*
 * create *build/i386/lib/libmruby_core.a* out of all object files (C only)
-* create ```build/i386/bin/mrbc``` by cross-compiling *tools/mrbc/mrbc.c* and
+* create `build/i386/bin/mrbc` by cross-compiling *tools/mrbc/mrbc.c* and
 linking with *build/i386/lib/libmruby_core.a*
 
 ```
@@ -463,7 +467,7 @@ linking with *build/i386/lib/libmruby_core.a*
 ### Minimal Library
 
 To build a minimal mruby library you need to use the Cross Compiling
-feature due to the reason that there are functions (i.e. stdio) which
+feature due to the reason that there are functions (e.g. stdio) which
 can't be disabled for the main build.
 
 ```ruby
@@ -477,12 +481,12 @@ end
 
 This configuration defines a cross compile build called 'Minimal' which
 is using the GCC and compiles for the host machine. It also disables
-all usages of stdio and doesn't compile any binaries (i.e. mrbc).
+all usages of stdio and doesn't compile any binaries (e.g. mrbc).
 
 ## Test Environment
 
 mruby's build process includes a test environment. In case you start the testing
-of mruby, a native binary called ```mrbtest``` will be generated and executed.
+of mruby, a native binary called `mrbtest` will be generated and executed.
 This binary contains all test cases which are defined under *test/t*. In case
 of a cross-compilation an additional cross-compiled *mrbtest* binary is
 generated. You can copy this binary and run on your target system.

doc/guides/debugger.md

@@ -38,7 +38,7 @@ To confirm mrdb was installed properly, run mrdb with the `--version` option:
 
 ```bash
 $ mrdb --version
-mruby 2.0.1 (2019-4-4)
+mruby 2.1.2 (2020-07-10)
 ```
 
 ## 2.2 Basic Operation

doc/guides/mrbconf.md

@@ -50,15 +50,17 @@ You can use mrbconfs with following ways:
 * When defined single precision floating point type(C type `float`) is used as `mrb_float`.
 * Else double precision floating point type(C type `double`) is used as `mrb_float`.
 
-`MRB_INT16`
-* When defined `int16_t` will be defined as `mrb_int`.
+`MRB_WITHOUT_FLOAT`
+* When defined removes floating point numbers from mruby.
+* It makes mruby easier to handle in "Microcontroller without FPU" and "Kernel Space".
+
+`MRB_INT32`
+* When defined, or `MRB_INT64` are not defined on 32-bit CPU mode, `mrb_int` will be defined as `int32_t`.
 * Conflicts with `MRB_INT64`.
 
 `MRB_INT64`
-* When defined `int64_t` will be defined as `mrb_int`.
-* Conflicts with `MRB_INT16`.
-* When `MRB_INT16` or `MRB_INT64` isn't defined `int`(most of the times 32-bit integer)
-will be defined as `mrb_int`.
+* When defined, or `MRB_INT32` are not defined on 64-bit CPU mode, `mrb_int` will be defined as `int64_t`.
+* Conflicts with `MRB_INT32`.
 
 ## Garbage collector configuration.
 
@@ -115,7 +117,7 @@ largest value of required alignment.
 
 `MRB_NAN_BOXING`
 * If defined represent `mrb_value` in boxed `double`.
-* Conflicts with `MRB_USE_FLOAT`.
+* Conflicts with `MRB_USE_FLOAT` and `MRB_WITHOUT_FLOAT`.
 
 `MRB_WORD_BOXING`
 * If defined represent `mrb_value` as a word.
@@ -126,6 +128,22 @@ largest value of required alignment.
 * Default value is `4`.
 * Specifies size of each segment in segment list.
 
+## Reduce heap memory configuration.
+
+`MRB_USE_LINK_TIME_RO_DATA_P`
+* Only available on ELF platforms.
+* If you specify the address of a read-only section when creating a symbol or string, that string will be used as it is.
+* Heap memory can be saved.
+* Uses `__ehdr_start` and `__init_array_start`.
+* It must be `__ehdr_start < data_addr < __init_array_start`.
+
+`MRB_USE_CUSTOM_RO_DATA_P`
+* Takes precedence over `MRB_USE_LINK_TIME_RO_DATA_P`.
+* Please try if `MRB_USE_LINK_TIME_RO_DATA_P` is not available.
+* The `mrb_ro_data_p()` function is implemented by the user in an arbitrary file.
+* The prototype declaration is `mrb_bool mrb_ro_data_p(const char *ptr)`.
+* Return `TRUE` if `ptr` is in read-only section, otherwise return `FALSE`.
+
 ## Other configuration.
 `MRB_UTF8_STRING`
 * Adds UTF-8 encoding support to character-oriented String instance methods.
@@ -144,3 +162,20 @@ largest value of required alignment.
 `MRB_STR_BUF_MIN_SIZE`
 * Default value is `128`.
 * Specifies initial capacity of `RString` created by `mrb_str_buf_new` function..
+
+`MRB_METHOD_CACHE`
+* Improve performance for method dispatch.
+
+`MRB_METHOD_CACHE_SIZE`
+* Default value is `128`.
+* Ignored if `MRB_METHOD_CACHE` is not defined.
+* Need to be the power of 2.
+
+`MRB_METHOD_T_STRUCT`
+* Use C struct to represent `mrb_method_t`
+* No `MRB_METHOD_T_STRUCT` requires highest 2 bits of function pointers to be zero
+* Define this macro on machines that use higher bits of pointers
+
+`MRB_ENABLE_ALL_SYMBOLS`
+* Make it available `Symbols.all_symbols` in `mrbgems/mruby-symbol-ext`
+* Increase heap memory usage.

doc/guides/mrbgems.md

@@ -37,11 +37,16 @@ conf.gem :mgem => 'mruby-yaml'
 conf.gem :mgem => 'yaml' # 'mruby-' prefix could be omitted
 ```
 
+For specifying commit hash to checkout use `:checksum_hash` option:
+```ruby
+conf.gem mgem: 'mruby-redis', checksum_hash: '3446d19fc4a3f9697b5ddbf2a904f301c42f2f4e'
+```
+
 If there is missing dependencies, mrbgem dependencies solver will reference
 mrbgem from core or mgem-list.
 
-To pull all gems from remote GIT repository on build, call ```./minirake -p```,
-or ```./minirake --pull-gems```.
+To pull all gems from remote GIT repository on build, call ```rake -p```,
+or ```rake --pull-gems```.
 
 NOTE: `:bitbucket` option supports only git. Hg is unsupported in this version.
 
@@ -230,7 +235,7 @@ So it is recommended not to put GEM's local header files on include/.
 These exports are retroactive.
 For example: when B depends to C and A depends to B, A will get include paths exported by C.
 
-Exported include_paths are automatically appended to GEM local include_paths by Minirake.
+Exported include_paths are automatically appended to GEM local include_paths by rake.
 You can use `spec.export_include_paths` accessor if you want more complex build.
 
 

doc/limitations.md

@@ -14,17 +14,17 @@ This document does not contain a complete list of limitations.
 Please help to improve it by submitting your findings.
 
 
-## ```1/2``` gives ```0.5```
+## `1/2` gives `0.5`
 
-Since mruby does not have ```Bignum```, bigger integers are represented
-by ```Float``` numbers. To enhance interoperability between ```Fixnum```
-and ```Float```, mruby provides ```Float#upto``` and other iterating
-methods for the ```Float``` class.  As a side effect, ```1/2``` gives ```0.5```
-not ```0```.
+Since mruby does not have `Bignum`, bigger integers are represented
+by `Float` numbers. To enhance interoperability between `Fixnum`
+and `Float`, mruby provides `Float#upto` and other iterating
+methods for the `Float` class.  As a side effect, `1/2` gives `0.5`
+not `0`.
 
-## ```Array``` passed to ```puts```
+## `Array` passed to `puts`
 
-Passing an Array to ```puts``` results in different output.
+Passing an Array to `puts` results in different output.
 
 ```ruby
 puts [1,2,3]
@@ -38,15 +38,15 @@ puts [1,2,3]
 3
 ```
 
-#### mruby [2.0.1 (2019-4-4)]
+#### mruby [2.1.2 (2020-07-10)]
 
 ```
 [1, 2, 3]
 ```
 
-## ```Kernel.raise``` in rescue clause
+## `Kernel.raise` in rescue clause
 
-```Kernel.raise``` without arguments does not raise the current exception within
+`Kernel.raise` without arguments does not raise the current exception within
 a rescue clause.
 
 ```ruby
@@ -59,21 +59,21 @@ end
 
 #### Ruby [ruby 2.0.0p645 (2015-04-13 revision 50299)]
 
-```ZeroDivisionError``` is raised.
+`ZeroDivisionError` is raised.
 
-#### mruby [2.0.1 (2019-4-4)]
+#### mruby [2.1.2 (2020-07-10)]
 
 No exception is raised.
 
 ## Fiber execution can't cross C function boundary
 
-mruby's ```Fiber``` is implemented in a similar way to Lua's co-routine. This
+mruby's `Fiber` is implemented in a similar way to Lua's co-routine. This
 results in the consequence that you can't switch context within C functions.
-Only exception is ```mrb_fiber_yield``` at return.
+Only exception is `mrb_fiber_yield` at return.
 
-## ```Array``` does not support instance variables
+## `Array` does not support instance variables
 
-To reduce memory consumption ```Array``` does not support instance variables.
+To reduce memory consumption `Array` does not support instance variables.
 
 ```ruby
 class Liste < Array
@@ -87,16 +87,16 @@ p Liste.new "foobar"
 
 #### Ruby [ruby 2.0.0p645 (2015-04-13 revision 50299)]
 
-``` [] ```
+` [] `
 
-#### mruby [2.0.1 (2019-4-4)]
+#### mruby [2.1.2 (2020-07-10)]
 
-```ArgumentError``` is raised.
+`ArgumentError` is raised.
 
 ## Method visibility
 
 For simplicity reasons no method visibility (public/private/protected) is
-supported.
+supported. Those methods are defined but they are dummy methods.
 
 ```ruby
 class VisibleTest
@@ -119,17 +119,53 @@ false
 true
 ```
 
-#### mruby [2.0.1 (2019-4-4)]
+#### mruby [2.1.2 (2020-07-10)]
 
 ```
 true
 true
 ```
 
-## defined?
+### Visibility Declaration
 
-The ```defined?``` keyword is considered too complex to be fully
-implemented. It is recommended to use ```const_defined?``` and
+The declaration form of following visibility methods are not implemented.
+
+* `public`
+* `private`
+* `protected`
+* `module_function`
+
+Especially, `module_function` method is not dummy, but no declaration form.
+
+```
+module TestModule
+  module_function
+  def test_func
+    p 'test_func called'
+  end
+
+  test_func
+end
+
+p 'ok'
+```
+
+#### Ruby [ruby 2.5.5p157 (2019-03-15 revision 67260)]
+
+```
+ok
+```
+
+#### mruby [2.1.2 (2020-07-10)]
+
+```
+test.rb:8: undefined method 'test_func' (NoMethodError)
+```
+
+## `defined?`
+
+The `defined?` keyword is considered too complex to be fully
+implemented. It is recommended to use `const_defined?` and
 other reflection methods instead.
 
 ```ruby
@@ -142,11 +178,11 @@ defined?(Foo)
 nil
 ```
 
-#### mruby [2.0.1 (2019-4-4)]
+#### mruby [2.1.2 (2020-07-10)]
 
-```NameError``` is raised.
+`NameError` is raised.
 
-## ```alias``` on global variables
+## `alias` on global variables
 
 Aliasing a global variable works in CRuby but is not part
 of the ISO standard.
@@ -157,9 +193,9 @@ alias $a $__a__
 
 #### Ruby [ruby 2.0.0p645 (2015-04-13 revision 50299)]
 
-``` nil ```
+` nil `
 
-#### mruby [2.0.1 (2019-4-4)]
+#### mruby [2.1.2 (2020-07-10)]
 
 Syntax error
 
@@ -178,15 +214,15 @@ end
 
 #### Ruby [ruby 2.0.0p645 (2015-04-13 revision 50299)]
 
-```ArgumentError``` is raised.
-The re-defined ```+``` operator does not accept any arguments.
+`ArgumentError` is raised.
+The re-defined `+` operator does not accept any arguments.
 
-#### mruby [2.0.1 (2019-4-4)]
+#### mruby [2.1.2 (2020-07-10)]
 
-``` 'ab' ```
+` 'ab' `
 Behavior of the operator wasn't changed.
 
-## Kernel#binding is not supported
+## `Kernel#binding` is not supported
 
 `Kernel#binding` method is not supported.
 
@@ -197,7 +233,7 @@ $ ruby -e 'puts Proc.new {}.binding'
 #<Binding:0x00000e9deabb9950>
 ```
 
-#### mruby [2.0.1 (2019-4-4)]
+#### mruby [2.1.2 (2020-07-10)]
 
 ```
 $ ./bin/mruby -e 'puts Proc.new {}.binding'
@@ -219,7 +255,7 @@ $ ruby -e 'def m(*r,**k) p [r,k] end; m("a"=>1,:b=>2)'
 [[{"a"=>1}], {:b=>2}]
 ```
 
-#### mruby [mruby 2.0.1]
+#### mruby [mruby 2.1.2]
 
 ```
 $ ./bin/mruby -e 'def m(*r,**k) p [r,k] end; m("a"=>1,:b=>2)'
@@ -238,7 +274,7 @@ Destructured arguments (`b` and `c` in above example) cannot be accessed
 from the default expression of optional arguments and keyword arguments,
 since actual assignment is done after the evaluation of those default
 expressions. Thus:
-    
+
 ```ruby
 def f(a,(b,c),d=b)
   p [a,b,c,d]
@@ -247,3 +283,17 @@ f(1,[2,3])
 ```
 
 CRuby gives `[1,2,3,nil]`. mruby raises `NoMethodError` for `b`.
+
+## `nil?` redefinition in conditional expressions
+
+Redefinition of `nil?` is ignored in conditional expressions.
+
+```ruby
+a = "a"
+def a.nil?
+  true
+end
+puts(a.nil? ? "truthy" : "falsy")
+```
+
+Ruby outputs `falsy`. mruby outputs `truthy`.

doc/opcode.md

@@ -16,7 +16,6 @@ In the table.1 below, the second field describes the size (and
 sign) of operands.
 
 * B: 8bit
-* sB: signed 8bit
 * S: 16bit
 * sS: signed 16bit
 * W: 24bit
@@ -31,97 +30,111 @@ with `"`, either `OP_EXT1` or `OP_EXT2` or `OP_EXT2` can be prefixed.
 
 ## table.1 Instruction Table
 
-|Instruction Name |Operand type |Semantics        
-|-----------------|-------------|-----------------
-|OP_NOP           | -           |                 
-|OP_MOVE"         |BB           |R(a) = R(b)      
-|OP_LOADL"        |BB           |R(a) = Pool(b)   
-|OP_LOADI"        |BsB          |R(a) = mrb_int(b)
-|OP_LOADI_0'      |B            |R(a) = 0
-|OP_LOADI_1'      |B            |R(a) = 1
-|OP_LOADI_2'      |B            |R(a) = 2
-|OP_LOADI_3'      |B            |R(a) = 3
-|OP_LOADSYM"      |BB           |R(a) = Syms(b)
-|OP_LOADNIL'      |B            |R(a) = nil
-|OP_LOADSELF'     |B            |R(a) = self
-|OP_LOADT'        |B            |R(a) = true
-|OP_LOADF'        |B            |R(a) = false
-|OP_GETGV"        |BB           |R(a) = getglobal(Syms(b))
-|OP_SETGV"        |BB           |setglobal(Syms(b), R(a))
-|OP_GETSV"        |BB           |R(a) = Special[b]
-|OP_SETSV"        |BB           |Special[b] = R(a)
-|OP_GETIV"        |BB           |R(a) = ivget(Syms(b))
-|OP_SETIV"        |BB           |ivset(Syms(b),R(a))
-|OP_GETCV"        |BB           |R(a) = cvget(Syms(b))
-|OP_SETCV"        |BB           |cvset(Syms(b),R(a))
-|OP_GETCONST"     |BB           |R(a) = constget(Syms(b))
-|OP_SETCONST"     |BB           |constset(Syms(b),R(a))
-|OP_GETMCNST"     |BB           |R(a) = R(a)::Syms(b)
-|OP_SETMCNST"     |BB           |R(a+1)::Syms(b) = R(a)
-|OP_GETUPVAR'     |BBB          |R(a) = uvget(b,c)
-|OP_SETUPVAR'     |BBB          |uvset(b,c,R(a))
-|OP_JMP           |S            |pc+=a
-|OP_JMPIF'        |SB           |if R(b) pc+=a
-|OP_JMPNOT'       |SB           |if !R(b) pc+=a
-|OP_ONERR         |sS           |rescue_push(pc+a)
-|OP_EXCEPT'       |B            |R(a) = exc
-|OP_RESCUE"       |BB           |R(b) = R(a).isa?(R(b))
-|OP_POPERR        |B            |a.times{rescue_pop()}
-|OP_RAISE'        |B            |raise(R(a))
-|OP_EPUSH'        |B            |ensure_push(SEQ[a])
-|OP_EPOP          |B            |A.times{ensure_pop().call}
-|OP_SENDV"        |BB           |R(a) = call(R(a),Syms(b),*R(a+1))
-|OP_SENDVB"       |BB           |R(a) = call(R(a),Syms(b),*R(a+1),&R(a+2))
-|OP_SEND"         |BBB          |R(a) = call(R(a),Syms(b),R(a+1),...,R(a+c))
-|OP_SENDB"        |BBB          |R(a) = call(R(a),Syms(Bx),R(a+1),...,R(a+c),&R(a+c+1))
-|OP_CALL'         |B            |R(a) = self.call(frame.argc, frame.argv)
-|OP_SUPER'        |BB           |R(a) = super(R(a+1),... ,R(a+b+1))
-|OP_ARGARY'       |BS           |R(a) = argument array (16=5:1:5:1:4)
-|OP_ENTER         |W            |arg setup according to flags (23=5:5:1:5:5:1:1)
-|OP_KARG"         |BB           |R(a) = kdict[Syms(Bx)]                          # todo
-|OP_KARG2"        |BB           |R(a) = kdict[Syms(Bx)]; kdict.rm(Syms(b))       # todo
-|OP_RETURN'       |B            |return R(a) (normal)
-|OP_RETURN_BLK'   |B            |return R(a) (in-block return)
-|OP_BREAK'        |B            |break R(a)
-|OP_BLKPUSH'      |BS           |R(a) = block (16=5:1:5:1:4)
-|OP_ADD"          |BB           |R(a) = R(a)+R(a+1)
-|OP_ADDI"         |BBB          |R(a) = R(a)+mrb_int(c)
-|OP_SUB"          |BB           |R(a) = R(a)-R(a+1)
-|OP_SUBI"         |BB           |R(a) = R(a)-C
-|OP_MUL"          |BB           |R(a) = R(a)*R(a+1)
-|OP_DIV"          |BB           |R(a) = R(a)/R(a+1)
-|OP_EQ"           |BB           |R(a) = R(a)==R(a+1)
-|OP_LT"           |BB           |R(a) = R(a)<R(a+1)
-|OP_LE"           |BB           |R(a) = R(a)<=R(a+1)
-|OP_GT"           |BB           |R(a) = R(a)>R(a+1)
-|OP_GE"           |BB           |R(a) = R(a)>=R(a+1)
-|OP_ARRAY'        |BB           |R(a) = ary_new(R(a),R(a+1)..R(a+b))
-|OP_ARRAY2"       |BB           |R(a) = ary_new(R(b),R(b+1)..R(b+c))
-|OP_ARYCAT'       |B            |ary_cat(R(a),R(a+1))
-|OP_ARYPUSH'      |B            |ary_push(R(a),R(a+1))
-|OP_AREF'         |BB           |R(a) = R(a)[b]
-|OP_ASET'         |BB           |R(a)[b] = R(a+1)
-|OP_APOST'        |BB           |*R(a),R(A+1)..R(A+C) = R(a)[B..]
-|OP_STRING"       |BB           |R(a) = str_dup(Lit(b))
-|OP_STRCAT'       |B            |str_cat(R(a),R(a+1))
-|OP_HASH'         |BB           |R(a) = hash_new(R(a),R(a+1)..R(a+b))
-|OP_HASHADD'      |BB           |R(a) = hash_push(R(a),R(a+1)..R(a+b))
-|OP_LAMBDA"       |BB           |R(a) = lambda(SEQ[b],OP_L_LAMBDA)
-|OP_BLOCK"        |BB           |R(a) = lambda(SEQ[b],OP_L_BLOCK)
-|OP_METHOD"       |BB           |R(a) = lambda(SEQ[b],OP_L_METHOD)
-|OP_RANGE_INC'    |B            |R(a) = range_new(R(a),R(a+1),FALSE)
-|OP_RANGE_EXC'    |B            |R(a) = range_new(R(a),R(a+1),TRUE)
-|OP_OCLASS'       |B            |R(a) = ::Object
-|OP_CLASS"        |BB           |R(a) = newclass(R(a),Syms(b),R(a+1))
-|OP_MODULE"       |BB           |R(a) = newmodule(R(a),Syms(b))
-|OP_EXEC"         |BB           |R(a) = blockexec(R(a),SEQ[b])
-|OP_DEF"          |BB           |R(a).newmethod(Syms(b),R(a+1))
-|OP_ALIAS'        |B            |alias_method(R(a),R(a+1),R(a+2))
-|OP_UNDEF"        |BB           |undef_method(R(a),Syms(b))
-|OP_SCLASS'       |B            |R(a) = R(a).singleton_class
-|OP_TCLASS'       |B            |R(a) = target_class
-|OP_ERR'          |B            |raise(RuntimeError, Lit(Bx))
-|OP_EXT1          |-            |make 1st operand 16bit
-|OP_EXT2          |-            |make 2nd operand 16bit
-|OP_EXT3          |-            |make 1st and 2nd operands 16bit
-|OP_STOP          |-            |stop VM
+| Instruction Name | Operand type | Semantics                                              |
+|------------------|--------------|--------------------------------------------------------|
+| OP_NOP           | -            | no operation                                           |
+| OP_MOVE"         | BB           | R(a) = R(b)                                            |
+| OP_LOADL"        | BB           | R(a) = Pool(b)                                         |
+| OP_LOADI"        | BB           | R(a) = mrb_int(b)                                      |
+| OP_LOADINEG"     | BB           | R(a) = mrb_int(-b)                                     |
+| OP_LOADI__1'     | B            | R(a) = mrb_int(-1)                                     |
+| OP_LOADI_0'      | B            | R(a) = mrb_int(0)                                      |
+| OP_LOADI_1'      | B            | R(a) = mrb_int(1)                                      |
+| OP_LOADI_2'      | B            | R(a) = mrb_int(2)                                      |
+| OP_LOADI_3'      | B            | R(a) = mrb_int(3)                                      |
+| OP_LOADI_4'      | B            | R(a) = mrb_int(4)                                      |
+| OP_LOADI_5'      | B            | R(a) = mrb_int(5)                                      |
+| OP_LOADI_6'      | B            | R(a) = mrb_int(6)                                      |
+| OP_LOADI_7'      | B            | R(a) = mrb_int(7)                                      |
+| OP_LOADI16'      | BsS          | R(a) = mrb_int(b)                                      |
+| OP_LOADSYM"      | BB           | R(a) = Syms(b)                                         |
+| OP_LOADNIL'      | B            | R(a) = nil                                             |
+| OP_LOADSELF'     | B            | R(a) = self                                            |
+| OP_LOADT'        | B            | R(a) = true                                            |
+| OP_LOADF'        | B            | R(a) = false                                           |
+| OP_GETGV"        | BB           | R(a) = getglobal(Syms(b))                              |
+| OP_SETGV"        | BB           | setglobal(Syms(b), R(a))                               |
+| OP_GETSV"        | BB           | R(a) = Special[Syms(b)]                                |
+| OP_SETSV"        | BB           | Special[Syms(b)] = R(a)                                |
+| OP_GETIV"        | BB           | R(a) = ivget(Syms(b))                                  |
+| OP_SETIV"        | BB           | ivset(Syms(b),R(a))                                    |
+| OP_GETCV"        | BB           | R(a) = cvget(Syms(b))                                  |
+| OP_SETCV"        | BB           | cvset(Syms(b),R(a))                                    |
+| OP_GETCONST"     | BB           | R(a) = constget(Syms(b))                               |
+| OP_SETCONST"     | BB           | constset(Syms(b),R(a))                                 |
+| OP_GETMCNST"     | BB           | R(a) = R(a)::Syms(b)                                   |
+| OP_SETMCNST"     | BB           | R(a+1)::Syms(b) = R(a)                                 |
+| OP_GETUPVAR"     | BBB          | R(a) = uvget(b,c)                                      |
+| OP_SETUPVAR"     | BBB          | uvset(b,c,R(a))                                        |
+| OP_JMP           | S            | pc=a                                                   |
+| OP_JMPIF'        | BS           | if R(a) pc=b                                           |
+| OP_JMPNOT'       | BS           | if !R(a) pc=b                                          |
+| OP_JMPNIL'       | BS           | if R(a)==nil pc=b                                      |
+| OP_ONERR         | S            | rescue_push(a)                                         |
+| OP_EXCEPT'       | B            | R(a) = exc                                             |
+| OP_RESCUE"       | BB           | R(b) = R(a).isa?(R(b))                                 |
+| OP_POPERR'       | B            | a.times{rescue_pop()}                                  |
+| OP_RAISE'        | B            | raise(R(a))                                            |
+| OP_EPUSH'        | B            | ensure_push(SEQ[a])                                    |
+| OP_EPOP'         | B            | A.times{ensure_pop().call}                             |
+| OP_SENDV"        | BB           | R(a) = call(R(a),Syms(b),*R(a+1))                      |
+| OP_SENDVB"       | BB           | R(a) = call(R(a),Syms(b),*R(a+1),&R(a+2))              |
+| OP_SEND"         | BBB          | R(a) = call(R(a),Syms(b),R(a+1),...,R(a+c))            |
+| OP_SENDB"        | BBB          | R(a) = call(R(a),Syms(b),R(a+1),...,R(a+c),&R(a+c+1))  |
+| OP_CALL          | -            | R(0) = self.call(frame.argc, frame.argv)               |
+| OP_SUPER"        | BB           | R(a) = super(R(a+1),... ,R(a+b+1))                     |
+| OP_ARGARY'       | BS           | R(a) = argument array (16=5:1:5:1:4)                   |
+| OP_ENTER         | W            | arg setup according to flags (23=5:5:1:5:5:1:1)        |
+| OP_KEY_P"        | BB           | R(a) = kdict.key?(Syms(b))                             |
+| OP_KEYEND        | -            | raise unless kdict.empty?                              |
+| OP_KARG"         | BB           | R(a) = kdict[Syms(b)]; kdict.delete(Syms(b))           |
+| OP_RETURN'       | B            | return R(a) (normal)                                   |
+| OP_RETURN_BLK'   | B            | return R(a) (in-block return)                          |
+| OP_BREAK'        | B            | break R(a)                                             |
+| OP_BLKPUSH'      | BS           | R(a) = block (16=5:1:5:1:4)                            |
+| OP_ADD'          | B            | R(a) = R(a)+R(a+1)                                     |
+| OP_ADDI"         | BB           | R(a) = R(a)+mrb_int(b)                                 |
+| OP_SUB'          | B            | R(a) = R(a)-R(a+1)                                     |
+| OP_SUBI"         | BB           | R(a) = R(a)-mrb_int(b)                                 |
+| OP_MUL'          | B            | R(a) = R(a)*R(a+1)                                     |
+| OP_DIV'          | B            | R(a) = R(a)/R(a+1)                                     |
+| OP_EQ'           | B            | R(a) = R(a)==R(a+1)                                    |
+| OP_LT'           | B            | R(a) = R(a)<R(a+1)                                     |
+| OP_LE'           | B            | R(a) = R(a)<=R(a+1)                                    |
+| OP_GT'           | B            | R(a) = R(a)>R(a+1)                                     |
+| OP_GE'           | B            | R(a) = R(a)>=R(a+1)                                    |
+| OP_ARRAY"        | BB           | R(a) = ary_new(R(a),R(a+1)..R(a+b))                    |
+| OP_ARRAY2"       | BBB          | R(a) = ary_new(R(b),R(b+1)..R(b+c))                    |
+| OP_ARYCAT'       | B            | ary_cat(R(a),R(a+1))                                   |
+| OP_ARYPUSH'      | B            | ary_push(R(a),R(a+1))                                  |
+| OP_ARYDUP'       | B            | R(a) = ary_dup(R(a))                                   |
+| OP_AREF"         | BBB          | R(a) = R(b)[c]                                         |
+| OP_ASET"         | BBB          | R(a)[c] = R(b)                                         |
+| OP_APOST"        | BBB          | *R(a),R(a+1)..R(a+c) = R(a)[b..]                       |
+| OP_INTERN'       | B            | R(a) = intern(R(a))                                    |
+| OP_STRING"       | BB           | R(a) = str_dup(Lit(b))                                 |
+| OP_STRCAT'       | B            | str_cat(R(a),R(a+1))                                   |
+| OP_HASH"         | BB           | R(a) = hash_new(R(a),R(a+1)..R(a+b))                   |
+| OP_HASHADD"      | BB           | R(a) = hash_push(R(a),R(a+1)..R(a+b))                  |
+| OP_HASHCAT'      | B            | R(a) = hash_cat(R(a),R(a+1))                           |
+| OP_LAMBDA"       | BB           | R(a) = lambda(SEQ[b],OP_L_LAMBDA)                      |
+| OP_BLOCK"        | BB           | R(a) = lambda(SEQ[b],OP_L_BLOCK)                       |
+| OP_METHOD"       | BB           | R(a) = lambda(SEQ[b],OP_L_METHOD)                      |
+| OP_RANGE_INC'    | B            | R(a) = range_new(R(a),R(a+1),FALSE)                    |
+| OP_RANGE_EXC'    | B            | R(a) = range_new(R(a),R(a+1),TRUE)                     |
+| OP_OCLASS'       | B            | R(a) = ::Object                                        |
+| OP_CLASS"        | BB           | R(a) = newclass(R(a),Syms(b),R(a+1))                   |
+| OP_MODULE"       | BB           | R(a) = newmodule(R(a),Syms(b))                         |
+| OP_EXEC"         | BB           | R(a) = blockexec(R(a),SEQ[b])                          |
+| OP_DEF"          | BB           | R(a).newmethod(Syms(b),R(a+1))                         |
+| OP_ALIAS"        | BB           | alias_method(target_class,Syms(a),Syms(b))             |
+| OP_UNDEF'        | B            | undef_method(target_class,Syms(a))                     |
+| OP_SCLASS'       | B            | R(a) = R(a).singleton_class                            |
+| OP_TCLASS'       | B            | R(a) = target_class                                    |
+| OP_DEBUG"        | BBB          | print a,b,c                                            |
+| OP_ERR'          | B            | raise(LocalJumpError, Lit(a))                          |
+| OP_EXT1          | -            | make 1st operand 16bit                                 |
+| OP_EXT2          | -            | make 2nd operand 16bit                                 |
+| OP_EXT3          | -            | make 1st and 2nd operands 16bit                        |
+| OP_STOP          | -            | stop VM                                                |
+|------------------|--------------|--------------------------------------------------------|

examples/targets/build_config_ArduinoDue.rb

@@ -42,7 +42,7 @@ MRuby::CrossBuild.new("ArduinoDue") do |conf|
     cc.flags = %w(-g -Os -w -ffunction-sections -fdata-sections -nostdlib --param max-inline-insns-single=500
                 -Dprintf=iprintf -mcpu=cortex-m3 -DF_CPU=84000000L -DARDUINO=156 -DARDUINO_SAM_DUE -DARDUINO_ARCH_SAM
                 -D__SAM3X8E__ -mthumb -DUSB_PID=0x003e -DUSB_VID=0x2341 -DUSBCON -DUSB_MANUFACTURER="Unknown" -DUSB_PRODUCT="Arduino Due")
-    cc.compile_options = "%{flags} -o %{outfile} -c %{infile}"
+    cc.compile_options = %Q[%{flags} -o "%{outfile}" -c "%{infile}"]
 
     #configuration for low memory environment
     cc.defines << %w(MRB_HEAP_PAGE_SIZE=64)
@@ -64,7 +64,7 @@ MRuby::CrossBuild.new("ArduinoDue") do |conf|
 
   conf.archiver do |archiver|
     archiver.command = "#{BIN_PATH}/arm-none-eabi-ar"
-    archiver.archive_options = 'rcs %{outfile} %{objs}'
+    archiver.archive_options = 'rcs "%{outfile}" %{objs}'
   end
 
   #no executables

examples/targets/build_config_IntelEdison.rb

@@ -32,7 +32,7 @@ MRuby::CrossBuild.new('core2-32-poky-linux') do |conf|
     cc.flags = %w(-m32 -march=core2 -mtune=core2 -msse3 -mfpmath=sse -mstackrealign -fno-omit-frame-pointer)
     cc.flags << %w(-O2 -pipe -g -feliminate-unused-debug-types)
     cc.flags << "--sysroot=#{POKY_EDISON_SYSROOT}"
-    cc.compile_options = "%{flags} -o %{outfile} -c %{infile}"
+    cc.compile_options = %Q[%{flags} -o "%{outfile}" -c "%{infile}"]
     cc.defines = %w(ENABLE_READLINE)
   end
 
@@ -47,7 +47,7 @@ MRuby::CrossBuild.new('core2-32-poky-linux') do |conf|
 
   conf.archiver do |archiver|
     archiver.command = "#{POKY_EDISON_BIN_PATH}/i586-poky-linux-ar"
-    archiver.archive_options = 'rcs %{outfile} %{objs}'
+    archiver.archive_options = 'rcs "%{outfile}" %{objs}'
   end
 
   conf.linker do |linker|

examples/targets/build_config_IntelGalileo.rb

@@ -39,7 +39,7 @@ MRuby::CrossBuild.new("Galileo") do |conf|
     cc.flags = %w(-m32 -march=i586 -c -g -Os -w
               -ffunction-sections -fdata-sections -MMD -DARDUINO=153)
     cc.flags << "--sysroot=#{GALILEO_SYSROOT}"
-    cc.compile_options = "%{flags} -o %{outfile} -c %{infile}"
+    cc.compile_options = %Q[%{flags} -o "%{outfile}" -c "%{infile}"]
   end
 
   conf.cxx do |cxx|
@@ -54,7 +54,7 @@ MRuby::CrossBuild.new("Galileo") do |conf|
 
   conf.archiver do |archiver|
     archiver.command = "#{GALILEO_BIN_PATH}/i586-poky-linux-uclibc-ar"
-    archiver.archive_options = 'rcs %{outfile} %{objs}'
+    archiver.archive_options = 'rcs "%{outfile}" %{objs}'
   end
 
   conf.linker do |linker|

examples/targets/build_config_RX630.rb

@@ -27,7 +27,7 @@ MRuby::CrossBuild.new("RX630") do |conf|
   conf.cc do |cc|
     cc.command = "#{BIN_PATH}/rx-elf-gcc"
     cc.flags = "-Wall -g -O2 -flto -mcpu=rx600 -m64bit-doubles"
-    cc.compile_options = "%{flags} -o %{outfile} -c %{infile}"
+    cc.compile_options = %Q[%{flags} -o "%{outfile}" -c "%{infile}"]
 
     #configuration for low memory environment
     cc.defines << %w(MRB_USE_FLOAT)
@@ -53,7 +53,7 @@ MRuby::CrossBuild.new("RX630") do |conf|
 
   conf.archiver do |archiver|
     archiver.command = "#{BIN_PATH}/rx-elf-ar"
-    archiver.archive_options = 'rcs %{outfile} %{objs}'
+    archiver.archive_options = 'rcs "%{outfile}" %{objs}'
   end
 
   #no executables

examples/targets/build_config_chipKITMax32.rb

@@ -39,7 +39,7 @@ MRuby::CrossBuild.new("chipKITMax32") do |conf|
     cc.flags = %w(-O2 -mno-smart-io -w -ffunction-sections -fdata-sections -g -mdebugger -Wcast-align
                 -fno-short-double -mprocessor=32MX795F512L -DF_CPU=80000000L -DARDUINO=23 -D_BOARD_MEGA_
                 -DMPIDEVER=0x01000202 -DMPIDE=23)
-    cc.compile_options = "%{flags} -o %{outfile} -c %{infile}"
+    cc.compile_options = %Q[%{flags} -o "%{outfile}" -c "%{infile}"]
 
     #configuration for low memory environment
     cc.defines << %w(MRB_HEAP_PAGE_SIZE=64)
@@ -60,7 +60,7 @@ MRuby::CrossBuild.new("chipKITMax32") do |conf|
 
   conf.archiver do |archiver|
     archiver.command = "#{PIC32_PATH}/compiler/pic32-tools/bin/pic32-ar"
-    archiver.archive_options = 'rcs %{outfile} %{objs}'
+    archiver.archive_options = 'rcs "%{outfile}" %{objs}'
   end
 
   #no executables

examples/targets/build_config_dreamcast_shelf.rb

@@ -0,0 +1,108 @@
+MRuby::Build.new do |conf|
+  # Gets set by the VS command prompts
+  if ENV['VisualStudioVersion'] || ENV['VSINSTALLDIR']
+    toolchain :visualcpp
+  else
+    toolchain :gcc
+  end
+
+  enable_debug
+
+  # Include the default GEMs
+  conf.gembox 'default'
+end
+
+# Cross Compiling configuration for the Sega Dreamcast
+# This configuration requires KallistiOS (KOS)
+# https://dreamcast.wiki
+#
+# Tested on GNU/Linux, MinGW-w64/MSYS2, Cygwin, macOS and MinGW/MSYS (see below)
+#
+MRuby::CrossBuild.new("dreamcast") do |conf|
+  toolchain :gcc
+
+  # Support for DreamSDK (based on MinGW/MSYS)
+  # To compile mruby with DreamSDK, RubyInstaller for Windows should be installed
+  DREAMSDK_HOME = ENV["DREAMSDK_HOME"]
+  MSYS_ROOT = !(DREAMSDK_HOME.nil? || DREAMSDK_HOME.empty?) ? "#{DREAMSDK_HOME}/msys/1.0" : ""
+ 
+  # Setting paths
+  DREAMCAST_PATH = "#{MSYS_ROOT}/opt/toolchains/dc"
+  KOS_PATH = "#{DREAMCAST_PATH}/kos"
+  BIN_PATH = "#{DREAMCAST_PATH}/sh-elf/bin"
+
+  # C compiler
+  # Flags were extracted from KallistiOS environment files
+  conf.cc do |cc|
+    cc.command = "#{BIN_PATH}/sh-elf-gcc"	
+    cc.include_paths << ["#{KOS_PATH}/include", "#{KOS_PATH}/kernel/arch/dreamcast/include", "#{KOS_PATH}/addons/include", "#{KOS_PATH}/../kos-ports/include"]
+    cc.flags << ["-O2", "-fomit-frame-pointer", "-ml", "-m4-single-only", "-ffunction-sections", "-fdata-sections", "-Wall", "-g", "-fno-builtin", "-ml", "-m4-single-only", "-Wl,-Ttext=0x8c010000", "-Wl,--gc-sections", "-T#{KOS_PATH}/utils/ldscripts/shlelf.xc", "-nodefaultlibs"]
+    cc.compile_options = %Q[%{flags} -o "%{outfile}" -c "%{infile}"]
+    cc.defines << %w(_arch_dreamcast)
+    cc.defines << %w(_arch_sub_pristine)
+  end
+
+  # C++ compiler
+  conf.cxx do |cxx|
+    cxx.command = conf.cc.command.dup
+    cxx.include_paths = conf.cc.include_paths.dup
+    cxx.flags = conf.cc.flags.dup
+    cxx.flags << %w(-fno-rtti -fno-exceptions)
+    cxx.defines = conf.cc.defines.dup
+    cxx.compile_options = conf.cc.compile_options.dup
+  end
+ 
+  # Linker
+  # There is an issue when making the mruby library with KallistiOS:
+  # 'newlib_kill.o' and 'newlib_getpid.o' aren't found so they are explicitly 
+  # specified here at least for now.
+  conf.linker do |linker|
+    linker.command="#{BIN_PATH}/sh-elf-gcc"
+    linker.flags << ["#{MSYS_ROOT}/opt/toolchains/dc/kos/kernel/build/newlib_kill.o", "#{MSYS_ROOT}/opt/toolchains/dc/kos/kernel/build/newlib_getpid.o", "-Wl,--start-group -lkallisti -lc -lgcc -Wl,--end-group"]
+    linker.library_paths << ["#{KOS_PATH}/lib/dreamcast", "#{KOS_PATH}/addons/lib/dreamcast", "#{KOS_PATH}/../kos-ports/lib"]
+  end  
+
+  # Archiver
+  conf.archiver do |archiver|
+    archiver.command = "#{BIN_PATH}/sh-elf-ar"
+    archiver.archive_options = 'rcs "%{outfile}" %{objs}'
+  end
+
+  # No executables
+  conf.bins = []
+
+  # Do not build executable test
+  conf.build_mrbtest_lib_only
+
+  # Disable C++ exception
+  conf.disable_cxx_exception
+  
+  # Gems from core
+  # removing mruby-io
+  conf.gem :core => "mruby-metaprog"
+  conf.gem :core => "mruby-pack"
+  conf.gem :core => "mruby-sprintf"
+  conf.gem :core => "mruby-print"
+  conf.gem :core => "mruby-math"
+  conf.gem :core => "mruby-time"
+  conf.gem :core => "mruby-struct"
+  conf.gem :core => "mruby-compar-ext"
+  conf.gem :core => "mruby-enum-ext"
+  conf.gem :core => "mruby-string-ext"
+  conf.gem :core => "mruby-numeric-ext"
+  conf.gem :core => "mruby-array-ext"
+  conf.gem :core => "mruby-hash-ext"
+  conf.gem :core => "mruby-range-ext"
+  conf.gem :core => "mruby-proc-ext"
+  conf.gem :core => "mruby-symbol-ext"
+  conf.gem :core => "mruby-random"
+  conf.gem :core => "mruby-object-ext"
+  conf.gem :core => "mruby-objectspace"
+  conf.gem :core => "mruby-fiber"
+  conf.gem :core => "mruby-enumerator"
+  conf.gem :core => "mruby-enum-lazy"
+  conf.gem :core => "mruby-toplevel-ext"
+  conf.gem :core => "mruby-kernel-ext"
+  conf.gem :core => "mruby-class-ext"
+  conf.gem :core => "mruby-compiler"
+end

include/mrbconf.h

@@ -36,19 +36,26 @@
 /* size of the method cache (need to be the power of 2) */
 //#define MRB_METHOD_CACHE_SIZE (1<<7)
 
-/* add -DMRB_METHOD_TABLE_INLINE to reduce the size of method table */
-/* MRB_METHOD_TABLE_INLINE requires LSB of function pointers to be zero */
-/* you might need to specify --falign-functions=n (where n>1) */
-//#define MRB_METHOD_TABLE_INLINE
+/* add -DMRB_METHOD_T_STRUCT on machines that use higher bits of pointers */
+/* no MRB_METHOD_T_STRUCT requires highest 2 bits of function pointers to be zero */
+#ifndef MRB_METHOD_T_STRUCT
+  // can't use highest 2 bits of function pointers at least on 32bit
+  // Windows and 32bit Linux.
+# ifdef MRB_32BIT
+#   define MRB_METHOD_T_STRUCT
+# endif
+#endif
 
-/* add -DMRB_INT16 to use 16bit integer for mrb_int; conflict with MRB_INT64 */
-//#define MRB_INT16
+/* add -DMRB_INT32 to use 32bit integer for mrb_int; conflict with MRB_INT64;
+   Default for 32-bit CPU mode. */
+//#define MRB_INT32
 
-/* add -DMRB_INT64 to use 64bit integer for mrb_int; conflict with MRB_INT16 */
+/* add -DMRB_INT64 to use 64bit integer for mrb_int; conflict with MRB_INT32;
+   Default for 64-bit CPU mode. */
 //#define MRB_INT64
 
 /* if no specific integer type is chosen */
-#if !defined(MRB_INT16) && !defined(MRB_INT32) && !defined(MRB_INT64)
+#if !defined(MRB_INT32) && !defined(MRB_INT64)
 # if defined(MRB_64BIT) && !defined(MRB_NAN_BOXING)
 /* Use 64bit integers on 64bit architecture (without MRB_NAN_BOXING) */
 #  define MRB_INT64
@@ -81,12 +88,13 @@
 /* number of object per heap page */
 //#define MRB_HEAP_PAGE_SIZE 1024
 
-/* if _etext and _edata available, mruby can reduce memory used by symbols */
-//#define MRB_USE_ETEXT_EDATA
+/* if __ehdr_start is available, mruby can reduce memory used by symbols */
+//#define MRB_USE_LINK_TIME_RO_DATA_P
 
-/* do not use __init_array_start to determine readonly data section;
-   effective only when MRB_USE_ETEXT_EDATA is defined */
-//#define MRB_NO_INIT_ARRAY_START
+/* if MRB_USE_LINK_TIME_RO_DATA_P does not work,
+   you can try mrb_ro_data_p() that you have implemented yourself in any file;
+   prototype is `mrb_bool mrb_ro_data_p(const char *ptr)` */
+//#define MRB_USE_CUSTOM_RO_DATA_P
 
 /* turn off generational GC by default */
 //#define MRB_GC_TURN_OFF_GENERATIONAL
@@ -146,4 +154,62 @@
 # define TRUE 1
 #endif
 
+/*
+** mruby tuning profiles
+**/
+
+/* A profile for micro controllers */
+#if defined(MRB_CONSTRAINED_BASELINE_PROFILE)
+# ifndef KHASH_DEFAULT_SIZE
+#  define KHASH_DEFAULT_SIZE 16
+# endif
+
+# ifndef MRB_STR_BUF_MIN_SIZE
+#  define MRB_STR_BUF_MIN_SIZE 32
+# endif
+
+# ifndef MRB_HEAP_PAGE_SIZE
+#  define MRB_HEAP_PAGE_SIZE 256
+# endif
+
+/* A profile for default mruby */
+#elif defined(MRB_BASELINE_PROFILE)
+
+/* A profile for desktop computers or workstations; rich memory! */
+#elif defined(MRB_MAIN_PROFILE)
+# ifndef MRB_METHOD_CACHE
+#  define MRB_METHOD_CACHE
+# endif
+
+# ifndef MRB_METHOD_CACHE_SIZE
+#  define MRB_METHOD_CACHE_SIZE (1<<10)
+# endif
+
+# ifndef MRB_IV_SEGMENT_SIZE
+#  define MRB_IV_SEGMENT_SIZE 32
+# endif
+
+# ifndef MRB_HEAP_PAGE_SIZE
+#  define MRB_HEAP_PAGE_SIZE 4096
+# endif
+
+/* A profile for server; mruby vm is long life */
+#elif defined(MRB_HIGH_PROFILE)
+# ifndef MRB_METHOD_CACHE
+#  define MRB_METHOD_CACHE
+# endif
+
+# ifndef MRB_METHOD_CACHE_SIZE
+#  define MRB_METHOD_CACHE_SIZE (1<<12)
+# endif
+
+# ifndef MRB_IV_SEGMENT_SIZE
+#  define MRB_IV_SEGMENT_SIZE 64
+# endif
+
+# ifndef MRB_HEAP_PAGE_SIZE
+#  define MRB_HEAP_PAGE_SIZE 4096
+# endif
+#endif
+
 #endif  /* MRUBYCONF_H */

include/mruby.h

@@ -1,7 +1,7 @@
 /*
 ** mruby - An embeddable Ruby implementation
 **
-** Copyright (c) mruby developers 2010-2019
+** Copyright (c) mruby developers 2010-2020
 **
 ** Permission is hereby granted, free of charge, to any person obtaining
 ** a copy of this software and associated documentation files (the
@@ -25,6 +25,10 @@
 ** [ MIT license: http://www.opensource.org/licenses/mit-license.php ]
 */
 
+/**
+ * @file mruby.h
+ */
+
 #ifndef MRUBY_H
 #define MRUBY_H
 
@@ -66,7 +70,13 @@
 
 #include "mrbconf.h"
 
+#include <mruby/common.h>
+#include <mruby/value.h>
+#include <mruby/gc.h>
+#include <mruby/version.h>
+
 #ifndef MRB_WITHOUT_FLOAT
+#include <float.h>
 #ifndef FLT_EPSILON
 #define FLT_EPSILON (1.19209290e-07f)
 #endif
@@ -84,11 +94,6 @@
 #endif
 #endif
 
-#include "mruby/common.h"
-#include <mruby/value.h>
-#include <mruby/gc.h>
-#include <mruby/version.h>
-
 /**
  * MRuby C API entry point
  */
@@ -97,11 +102,14 @@ MRB_BEGIN_DECL
 typedef uint8_t mrb_code;
 
 /**
- * Required arguments signature type.
+ * \class mrb_aspec
+ *
+ * Specifies the number of arguments a function takes
+ *
+ * Example: `MRB_ARGS_REQ(2) | MRB_ARGS_OPT(1)` for a method that expects 2..3 arguments
  */
 typedef uint32_t mrb_aspec;
 
-
 struct mrb_irep;
 struct mrb_state;
 
@@ -127,8 +135,8 @@ typedef struct {
   uint16_t ridx;
   uint16_t epos;
   struct REnv *env;
-  mrb_code *pc;                 /* return address */
-  mrb_code *err;                /* error position */
+  const mrb_code *pc;           /* return address */
+  const mrb_code *err;          /* error position */
   int argc;
   int acc;
   struct RClass *target_class;
@@ -157,8 +165,8 @@ struct mrb_context {
   struct RProc **ensure;                  /* ensure handler stack */
   uint16_t esize, eidx;
 
-  enum mrb_fiber_state status;
-  mrb_bool vmexec;
+  enum mrb_fiber_state status : 4;
+  mrb_bool vmexec : 1;
   struct RFiber *fib;
 };
 
@@ -170,13 +178,22 @@ struct mrb_context {
 # define MRB_METHOD_CACHE_SIZE (1<<7)
 #endif
 
-typedef mrb_value (*mrb_func_t)(struct mrb_state *mrb, mrb_value);
+/**
+ * Function pointer type for a function callable by mruby.
+ *
+ * The arguments to the function are stored on the mrb_state. To get them see mrb_get_args
+ *
+ * @param mrb The mruby state
+ * @param self The self object
+ * @return [mrb_value] The function's return value
+ */
+typedef mrb_value (*mrb_func_t)(struct mrb_state *mrb, mrb_value self);
 
-#ifdef MRB_METHOD_TABLE_INLINE
+#ifndef MRB_METHOD_T_STRUCT
 typedef uintptr_t mrb_method_t;
 #else
 typedef struct {
-  mrb_bool func_p;
+  uint8_t flags;
   union {
     struct RProc *proc;
     mrb_func_t func;
@@ -196,13 +213,9 @@ struct mrb_jmpbuf;
 
 typedef void (*mrb_atexit_func)(struct mrb_state*);
 
-#define MRB_STATE_NO_REGEXP 1
-#define MRB_STATE_REGEXP    2
-
 typedef struct mrb_state {
   struct mrb_jmpbuf *jmp;
 
-  uint32_t flags;
   mrb_allocf allocf;                      /* memory allocation function */
   void *allocf_ud;                        /* auxiliary data of allocf */
 
@@ -232,7 +245,6 @@ typedef struct mrb_state {
   struct RClass *symbol_class;
   struct RClass *kernel_module;
 
-  struct alloca_header *mems;
   mrb_gc gc;
 
 #ifdef MRB_METHOD_CACHE
@@ -248,8 +260,8 @@ typedef struct mrb_state {
 #endif
 
 #ifdef MRB_ENABLE_DEBUG_HOOK
-  void (*code_fetch_hook)(struct mrb_state* mrb, struct mrb_irep *irep, mrb_code *pc, mrb_value *regs);
-  void (*debug_op_hook)(struct mrb_state* mrb, struct mrb_irep *irep, mrb_code *pc, mrb_value *regs);
+  void (*code_fetch_hook)(struct mrb_state* mrb, struct mrb_irep *irep, const mrb_code *pc, mrb_value *regs);
+  void (*debug_op_hook)(struct mrb_state* mrb, struct mrb_irep *irep, const mrb_code *pc, mrb_value *regs);
 #endif
 
 #ifdef MRB_BYTECODE_DECODE_OPTION
@@ -290,9 +302,9 @@ typedef struct mrb_state {
  *          //free(TheAnimals);
  *      }
  *
- * @param [mrb_state *] mrb The current mruby state.
- * @param [const char *] name The name of the defined class.
- * @param [struct RClass *] super The new class parent.
+ * @param mrb The current mruby state.
+ * @param name The name of the defined class.
+ * @param super The new class parent.
  * @return [struct RClass *] Reference to the newly defined class.
  * @see mrb_define_class_under
  */
@@ -301,12 +313,14 @@ MRB_API struct RClass *mrb_define_class(mrb_state *mrb, const char *name, struct
 /**
  * Defines a new module.
  *
- * @param [mrb_state *] mrb_state* The current mruby state.
- * @param [const char *] char* The name of the module.
+ * @param mrb The current mruby state.
+ * @param name The name of the module.
  * @return [struct RClass *] Reference to the newly defined module.
  */
-MRB_API struct RClass *mrb_define_module(mrb_state *, const char*);
-MRB_API mrb_value mrb_singleton_class(mrb_state*, mrb_value);
+MRB_API struct RClass *mrb_define_module(mrb_state *mrb, const char *name);
+
+MRB_API mrb_value mrb_singleton_class(mrb_state *mrb, mrb_value val);
+MRB_API struct RClass *mrb_singleton_class_ptr(mrb_state *mrb, mrb_value val);
 
 /**
  * Include a module in another class or module.
@@ -315,11 +329,11 @@ MRB_API mrb_value mrb_singleton_class(mrb_state*, mrb_value);
  *   module B
  *     include A
  *   end
- * @param [mrb_state *] mrb_state* The current mruby state.
- * @param [struct RClass *] RClass* A reference to module or a class.
- * @param [struct RClass *] RClass* A reference to the module to be included.
+ * @param mrb The current mruby state.
+ * @param cla A reference to module or a class.
+ * @param included A reference to the module to be included.
  */
-MRB_API void mrb_include_module(mrb_state*, struct RClass*, struct RClass*);
+MRB_API void mrb_include_module(mrb_state *mrb, struct RClass *cla, struct RClass *included);
 
 /**
  * Prepends a module in another class or module.
@@ -328,11 +342,11 @@ MRB_API void mrb_include_module(mrb_state*, struct RClass*, struct RClass*);
  *  module B
  *    prepend A
  *  end
- * @param [mrb_state *] mrb_state* The current mruby state.
- * @param [struct RClass *] RClass* A reference to module or a class.
- * @param [struct RClass *] RClass* A reference to the module to be prepended.
+ * @param mrb The current mruby state.
+ * @param cla A reference to module or a class.
+ * @param prepended A reference to the module to be prepended.
  */
-MRB_API void mrb_prepend_module(mrb_state*, struct RClass*, struct RClass*);
+MRB_API void mrb_prepend_module(mrb_state *mrb, struct RClass *cla, struct RClass *prepended);
 
 /**
  * Defines a global function in ruby.
@@ -341,7 +355,6 @@ MRB_API void mrb_prepend_module(mrb_state*, struct RClass*, struct RClass*);
  *
  * Example:
  *
- *     !!!c
  *     mrb_value example_method(mrb_state* mrb, mrb_value self)
  *     {
  *          puts("Executing example command!");
@@ -353,11 +366,11 @@ MRB_API void mrb_prepend_module(mrb_state*, struct RClass*, struct RClass*);
  *           mrb_define_method(mrb, mrb->kernel_module, "example_method", example_method, MRB_ARGS_NONE());
  *     }
  *
- * @param [mrb_state *] mrb The MRuby state reference.
- * @param [struct RClass *] cla The class pointer where the method will be defined.
- * @param [const char *] name The name of the method being defined.
- * @param [mrb_func_t] func The function pointer to the method definition.
- * @param [mrb_aspec] aspec The method parameters declaration.
+ * @param mrb The MRuby state reference.
+ * @param cla The class pointer where the method will be defined.
+ * @param name The name of the method being defined.
+ * @param func The function pointer to the method definition.
+ * @param aspec The method parameters declaration.
  */
 MRB_API void mrb_define_method(mrb_state *mrb, struct RClass *cla, const char *name, mrb_func_t func, mrb_aspec aspec);
 
@@ -380,14 +393,20 @@ MRB_API void mrb_define_method(mrb_state *mrb, struct RClass *cla, const char *n
  *       foo = mrb_define_class(mrb, "Foo", mrb->object_class);
  *       mrb_define_class_method(mrb, foo, "bar", bar_method, MRB_ARGS_NONE());
  *     }
- * @param [mrb_state *] mrb_state* The MRuby state reference.
- * @param [struct RClass *] RClass* The class where the class method will be defined.
- * @param [const char *] char* The name of the class method being defined.
- * @param [mrb_func_t] mrb_func_t The function pointer to the class method definition.
- * @param [mrb_aspec] mrb_aspec The method parameters declaration.
+ * @param mrb The MRuby state reference.
+ * @param cla The class where the class method will be defined.
+ * @param name The name of the class method being defined.
+ * @param fun The function pointer to the class method definition.
+ * @param aspec The method parameters declaration.
  */
-MRB_API void mrb_define_class_method(mrb_state *, struct RClass *, const char *, mrb_func_t, mrb_aspec);
-MRB_API void mrb_define_singleton_method(mrb_state*, struct RObject*, const char*, mrb_func_t, mrb_aspec);
+MRB_API void mrb_define_class_method(mrb_state *mrb, struct RClass *cla, const char *name, mrb_func_t fun, mrb_aspec aspec);
+
+/**
+ * Defines a singleton method
+ *
+ * @see mrb_define_class_method
+ */
+MRB_API void mrb_define_singleton_method(mrb_state *mrb, struct RObject *cla, const char *name, mrb_func_t fun, mrb_aspec aspec);
 
 /**
  *  Defines a module function.
@@ -408,13 +427,13 @@ MRB_API void mrb_define_singleton_method(mrb_state*, struct RObject*, const char
  *          foo = mrb_define_module(mrb, "Foo");
  *          mrb_define_module_function(mrb, foo, "bar", bar_method, MRB_ARGS_NONE());
  *        }
- *  @param [mrb_state *] mrb_state* The MRuby state reference.
- *  @param [struct RClass *] RClass* The module where the module function will be defined.
- *  @param [const char *] char* The name of the module function being defined.
- *  @param [mrb_func_t] mrb_func_t The function pointer to the module function definition.
- *  @param [mrb_aspec] mrb_aspec The method parameters declaration.
+ *  @param mrb The MRuby state reference.
+ *  @param cla The module where the module function will be defined.
+ *  @param name The name of the module function being defined.
+ *  @param fun The function pointer to the module function definition.
+ *  @param aspec The method parameters declaration.
  */
-MRB_API void mrb_define_module_function(mrb_state*, struct RClass*, const char*, mrb_func_t, mrb_aspec);
+MRB_API void mrb_define_module_function(mrb_state *mrb, struct RClass *cla, const char *name, mrb_func_t fun, mrb_aspec aspec);
 
 /**
  *  Defines a constant.
@@ -437,12 +456,12 @@ MRB_API void mrb_define_module_function(mrb_state*, struct RClass*, const char*,
  *          mrb_value
  *          mrb_example_gem_final(mrb_state* mrb){
  *          }
- *  @param [mrb_state *] mrb_state* The MRuby state reference.
- *  @param [struct RClass *] RClass* A class or module the constant is defined in.
- *  @param [const char *] name The name of the constant being defined.
- *  @param [mrb_value] mrb_value The value for the constant.
+ *  @param mrb The MRuby state reference.
+ *  @param cla A class or module the constant is defined in.
+ *  @param name The name of the constant being defined.
+ *  @param val The value for the constant.
  */
-MRB_API void mrb_define_const(mrb_state*, struct RClass*, const char *name, mrb_value);
+MRB_API void mrb_define_const(mrb_state* mrb, struct RClass* cla, const char *name, mrb_value val);
 
 /**
  * Undefines a method.
@@ -488,11 +507,11 @@ MRB_API void mrb_define_const(mrb_state*, struct RClass*, const char *name, mrb_
  *
  *     mrb_example_gem_final(mrb_state* mrb){
  *     }
- * @param [mrb_state*] mrb_state* The mruby state reference.
- * @param [struct RClass*] RClass* A class the method will be undefined from.
- * @param [const char*] const char* The name of the method to be undefined.
+ * @param mrb The mruby state reference.
+ * @param cla The class the method will be undefined from.
+ * @param name The name of the method to be undefined.
  */
-MRB_API void mrb_undef_method(mrb_state*, struct RClass*, const char*);
+MRB_API void mrb_undef_method(mrb_state *mrb, struct RClass *cla, const char *name);
 MRB_API void mrb_undef_method_id(mrb_state*, struct RClass*, mrb_sym);
 
 /**
@@ -528,11 +547,11 @@ MRB_API void mrb_undef_method_id(mrb_state*, struct RClass*, mrb_sym);
  *      void
  *      mrb_example_gem_final(mrb_state* mrb){
  *      }
- * @param [mrb_state*] mrb_state* The mruby state reference.
- * @param [RClass*] RClass* A class the class method will be undefined from.
- * @param [const char*] const char* The name of the class method to be undefined.
+ * @param mrb The mruby state reference.
+ * @param cls A class the class method will be undefined from.
+ * @param name The name of the class method to be undefined.
  */
-MRB_API void mrb_undef_class_method(mrb_state*, struct RClass*, const char*);
+MRB_API void mrb_undef_class_method(mrb_state *mrb, struct RClass *cls, const char *name);
 
 /**
  * Initialize a new object instance of c class.
@@ -556,10 +575,10 @@ MRB_API void mrb_undef_class_method(mrb_state*, struct RClass*, const char*);
  *       obj = mrb_obj_new(mrb, example_class, 0, NULL); # => ExampleClass.new
  *       mrb_p(mrb, obj); // => Kernel#p
  *      }
- * @param [mrb_state*] mrb The current mruby state.
- * @param [RClass*] c Reference to the class of the new object.
- * @param [mrb_int] argc Number of arguments in argv
- * @param [const mrb_value *] argv Array of mrb_value to initialize the object
+ * @param mrb The current mruby state.
+ * @param c Reference to the class of the new object.
+ * @param argc Number of arguments in argv
+ * @param argv Array of mrb_value to initialize the object
  * @return [mrb_value] The newly initialized object
  */
 MRB_API mrb_value mrb_obj_new(mrb_state *mrb, struct RClass *c, mrb_int argc, const mrb_value *argv);
@@ -570,8 +589,6 @@ MRB_INLINE mrb_value mrb_class_new_instance(mrb_state *mrb, mrb_int argc, const
   return mrb_obj_new(mrb,c,argc,argv);
 }
 
-MRB_API mrb_value mrb_instance_new(mrb_state *mrb, mrb_value cv);
-
 /**
  * Creates a new instance of Class, Class.
  *
@@ -587,8 +604,8 @@ MRB_API mrb_value mrb_instance_new(mrb_state *mrb, mrb_value cv);
  *        mrb_p(mrb, obj); // => Kernel#p
  *       }
  *
- * @param [mrb_state*] mrb The current mruby state.
- * @param [struct RClass *] super The super class or parent.
+ * @param mrb The current mruby state.
+ * @param super The super class or parent.
  * @return [struct RClass *] Reference to the new class.
  */
 MRB_API struct RClass * mrb_class_new(mrb_state *mrb, struct RClass *super);
@@ -604,7 +621,7 @@ MRB_API struct RClass * mrb_class_new(mrb_state *mrb, struct RClass *super);
  *        example_module = mrb_module_new(mrb);
  *      }
  *
- * @param [mrb_state*] mrb The current mruby state.
+ * @param mrb The current mruby state.
  * @return [struct RClass *] Reference to the new module.
  */
 MRB_API struct RClass * mrb_module_new(mrb_state *mrb);
@@ -631,24 +648,24 @@ MRB_API struct RClass * mrb_module_new(mrb_state *mrb);
  *       }
  *      }
  *
- * @param [mrb_state*] mrb The current mruby state.
- * @param [const char *] name A string representing the name of the class.
+ * @param mrb The current mruby state.
+ * @param name A string representing the name of the class.
  * @return [mrb_bool] A boolean value.
  */
 MRB_API mrb_bool mrb_class_defined(mrb_state *mrb, const char *name);
 
 /**
  * Gets a class.
- * @param [mrb_state*] mrb The current mruby state.
- * @param [const char *] name The name of the class.
+ * @param mrb The current mruby state.
+ * @param name The name of the class.
  * @return [struct RClass *] A reference to the class.
 */
 MRB_API struct RClass * mrb_class_get(mrb_state *mrb, const char *name);
 
 /**
  * Gets a exception class.
- * @param [mrb_state*] mrb The current mruby state.
- * @param [const char *] name The name of the class.
+ * @param mrb The current mruby state.
+ * @param name The name of the class.
  * @return [struct RClass *] A reference to the class.
 */
 MRB_API struct RClass * mrb_exc_get(mrb_state *mrb, const char *name);
@@ -677,35 +694,35 @@ MRB_API struct RClass * mrb_exc_get(mrb_state *mrb, const char *name);
  *       }
  *      }
  *
- * @param [mrb_state*] mrb The current mruby state.
- * @param [struct RClass *] outer The name of the outer class.
- * @param [const char *] name A string representing the name of the inner class.
+ * @param mrb The current mruby state.
+ * @param outer The name of the outer class.
+ * @param name A string representing the name of the inner class.
  * @return [mrb_bool] A boolean value.
  */
 MRB_API mrb_bool mrb_class_defined_under(mrb_state *mrb, struct RClass *outer, const char *name);
 
 /**
  * Gets a child class.
- * @param [mrb_state*] mrb The current mruby state.
- * @param [struct RClass *] outer The name of the parent class.
- * @param [const char *] name The name of the class.
+ * @param mrb The current mruby state.
+ * @param outer The name of the parent class.
+ * @param name The name of the class.
  * @return [struct RClass *] A reference to the class.
 */
 MRB_API struct RClass * mrb_class_get_under(mrb_state *mrb, struct RClass *outer, const char *name);
 
 /**
  * Gets a module.
- * @param [mrb_state*] mrb The current mruby state.
- * @param [const char *] name The name of the module.
+ * @param mrb The current mruby state.
+ * @param name The name of the module.
  * @return [struct RClass *] A reference to the module.
 */
 MRB_API struct RClass * mrb_module_get(mrb_state *mrb, const char *name);
 
 /**
  * Gets a module defined under another module.
- * @param [mrb_state*] mrb The current mruby state.
- * @param [struct RClass *] outer The name of the outer module.
- * @param [const char *] name The name of the module.
+ * @param mrb The current mruby state.
+ * @param outer The name of the outer module.
+ * @param name The name of the module.
  * @return [struct RClass *] A reference to the module.
 */
 MRB_API struct RClass * mrb_module_get_under(mrb_state *mrb, struct RClass *outer, const char *name);
@@ -719,8 +736,8 @@ MRB_API mrb_value mrb_notimplement_m(mrb_state*, mrb_value);
  *
  * Equivalent to:
  *   Object#dup
- * @param [mrb_state*] mrb The current mruby state.
- * @param [mrb_value] obj Object to be duplicate.
+ * @param mrb The current mruby state.
+ * @param obj Object to be duplicate.
  * @return [mrb_value] The newly duplicated object.
  */
 MRB_API mrb_value mrb_obj_dup(mrb_state *mrb, mrb_value obj);
@@ -760,9 +777,9 @@ MRB_API mrb_value mrb_obj_dup(mrb_state *mrb, mrb_value obj);
  *        }
  *      }
  *
- * @param [mrb_state*] mrb The current mruby state.
- * @param [struct RClass *] c A reference to a class.
- * @param [mrb_sym] mid A symbol referencing a method id.
+ * @param mrb The current mruby state.
+ * @param c A reference to a class.
+ * @param mid A symbol referencing a method id.
  * @return [mrb_bool] A boolean value.
  */
 MRB_API mrb_bool mrb_obj_respond_to(mrb_state *mrb, struct RClass* c, mrb_sym mid);
@@ -770,10 +787,10 @@ MRB_API mrb_bool mrb_obj_respond_to(mrb_state *mrb, struct RClass* c, mrb_sym mi
 /**
  * Defines a new class under a given module
  *
- * @param [mrb_state*] mrb The current mruby state.
- * @param [struct RClass *] outer Reference to the module under which the new class will be defined
- * @param [const char *] name The name of the defined class
- * @param [struct RClass *] super The new class parent
+ * @param mrb The current mruby state.
+ * @param outer Reference to the module under which the new class will be defined
+ * @param name The name of the defined class
+ * @param super The new class parent
  * @return [struct RClass *] Reference to the newly defined class
  * @see mrb_define_class
  */
@@ -843,34 +860,93 @@ MRB_API struct RClass * mrb_define_module_under(mrb_state *mrb, struct RClass *o
  * | `S`  | {String}       | {mrb_value}       | when `!` follows, the value may be `nil`           |
  * | `A`  | {Array}        | {mrb_value}       | when `!` follows, the value may be `nil`           |
  * | `H`  | {Hash}         | {mrb_value}       | when `!` follows, the value may be `nil`           |
- * | `s`  | {String}       | char *, {mrb_int} | Receive two arguments; `s!` gives (`NULL`,`0`) for `nil`       |
+ * | `s`  | {String}       | char *, {mrb_int} | Receive two arguments; `s!` gives (`NULL`,`0`) for `nil`        |
  * | `z`  | {String}       | char *            | `NULL` terminated string; `z!` gives `NULL` for `nil`           |
  * | `a`  | {Array}        | {mrb_value} *, {mrb_int} | Receive two arguments; `a!` gives (`NULL`,`0`) for `nil` |
- * | `f`  | {Float}        | {mrb_float}       |                                                    |
- * | `i`  | {Integer}      | {mrb_int}         |                                                    |
+ * | `f`  | {Fixnum}/{Float} | {mrb_float}       |                                                    |
+ * | `i`  | {Fixnum}/{Float} | {mrb_int}         |                                                    |
  * | `b`  | boolean        | {mrb_bool}        |                                                    |
- * | `n`  | {Symbol}       | {mrb_sym}         |                                                    |
+ * | `n`  | {String}/{Symbol} | {mrb_sym}         |                                                    |
+ * | `d`  | data           | void *, {mrb_data_type} const | 2nd argument will be used to check data type so it won't be modified; when `!` follows, the value may be `nil` |
+ * | `I`  | inline struct  | void *          |                                                    |
  * | `&`  | block          | {mrb_value}       | &! raises exception if no block given.             |
- * | `*`  | rest arguments | {mrb_value} *, {mrb_int} | Receive the rest of arguments as an array; *! avoid copy of the stack.  |
- * | &vert; | optional     |                   | After this spec following specs would be optional. |
+ * | `*`  | rest arguments | {mrb_value} *, {mrb_int} | Receive the rest of arguments as an array; `*!` avoid copy of the stack.  |
+ * | <code>\|</code> | optional     |                   | After this spec following specs would be optional. |
  * | `?`  | optional given | {mrb_bool}        | `TRUE` if preceding argument is given. Used to check optional argument is given. |
+ * | `:`  | keyword args   | {mrb_kwargs} const | Get keyword arguments. @see mrb_kwargs |
  *
  * @see mrb_get_args
  */
 typedef const char *mrb_args_format;
 
+/**
+ * Get keyword arguments by `mrb_get_args()` with `:` specifier.
+ *
+ * `mrb_kwargs::num` indicates that the number of keyword values.
+ *
+ * `mrb_kwargs::values` is an object array, and the keyword argument corresponding to the string array is assigned.
+ * Note that `undef` is assigned if there is no keyword argument corresponding to `mrb_kwargs::optional`.
+ *
+ * `mrb_kwargs::table` accepts a string array.
+ *
+ * `mrb_kwargs::required` indicates that the specified number of keywords starting from the beginning of the string array are required.
+ *
+ * `mrb_kwargs::rest` is the remaining keyword argument that can be accepted as `**rest` in Ruby.
+ * If `NULL` is specified, `ArgumentError` is raised when there is an undefined keyword.
+ *
+ * Examples:
+ *
+ *      // def method(a: 1, b: 2)
+ *
+ *      uint32_t kw_num = 2;
+ *      const char *kw_names[kw_num] = { "a", "b" };
+ *      uint32_t kw_required = 0;
+ *      mrb_value kw_values[kw_num];
+ *      const mrb_kwargs kwargs = { kw_num, kw_values, kw_names, kw_required, NULL };
+ *
+ *      mrb_get_args(mrb, ":", &kwargs);
+ *      if (mrb_undef_p(kw_values[0])) { kw_values[0] = mrb_fixnum_value(1); }
+ *      if (mrb_undef_p(kw_values[1])) { kw_values[1] = mrb_fixnum_value(2); }
+ *
+ *
+ *      // def method(str, x:, y: 2, z: "default string", **opts)
+ *
+ *      mrb_value str, kw_rest;
+ *      uint32_t kw_num = 3;
+ *      const char *kw_names[kw_num] = { "x", "y", "z" };
+ *      uint32_t kw_required = 1;
+ *      mrb_value kw_values[kw_num];
+ *      const mrb_kwargs kwargs = { kw_num, kw_values, kw_names, kw_required, &kw_rest };
+ *
+ *      mrb_get_args(mrb, "S:", &str, &kwargs);
+ *      // or: mrb_get_args(mrb, ":S", &kwargs, &str);
+ *      if (mrb_undef_p(kw_values[1])) { kw_values[1] = mrb_fixnum_value(2); }
+ *      if (mrb_undef_p(kw_values[2])) { kw_values[2] = mrb_str_new_cstr(mrb, "default string"); }
+ */
+typedef struct mrb_kwargs mrb_kwargs;
+
+struct mrb_kwargs
+{
+  uint32_t num;
+  mrb_value *values;
+  const char *const *table;
+  uint32_t required;
+  mrb_value *rest;
+};
+
 /**
  * Retrieve arguments from mrb_state.
  *
  * @param mrb The current MRuby state.
- * @param format [mrb_args_format] is a list of format specifiers
+ * @param format is a list of format specifiers
  * @param ... The passing variadic arguments must be a pointer of retrieving type.
  * @return the number of arguments retrieved.
  * @see mrb_args_format
+ * @see mrb_kwargs
  */
 MRB_API mrb_int mrb_get_args(mrb_state *mrb, mrb_args_format format, ...);
 
-static inline mrb_sym
+MRB_INLINE mrb_sym
 mrb_get_mid(mrb_state *mrb) /* get method symbol */
 {
   return mrb->c->ci->mid;
@@ -883,8 +959,21 @@ mrb_get_mid(mrb_state *mrb) /* get method symbol */
  */
 MRB_API mrb_int mrb_get_argc(mrb_state *mrb);
 
+/**
+ * Retrieve an array of arguments from mrb_state.
+ *
+ * Correctly handles *splat arguments.
+ */
 MRB_API mrb_value* mrb_get_argv(mrb_state *mrb);
 
+/**
+ * Retrieve the first and only argument from mrb_state.
+ * Raises ArgumentError unless the number of arguments is exactly one.
+ *
+ * Correctly handles *splat arguments.
+ */
+MRB_API mrb_value mrb_get_arg1(mrb_state *mrb);
+
 /* `strlen` for character string literals (use with caution or `strlen` instead)
     Adjacent string literals are concatenated in C/C++ in translation phase 6.
     If `lit` is not one, the compiler will report a syntax error:
@@ -896,6 +985,8 @@ MRB_API mrb_value* mrb_get_argv(mrb_state *mrb);
 /**
  * Call existing ruby functions.
  *
+ * Example:
+ *
  *      #include <stdio.h>
  *      #include <mruby.h>
  *      #include "mruby/compile.h"
@@ -912,15 +1003,16 @@ MRB_API mrb_value* mrb_get_argv(mrb_state *mrb);
  *        mrb_funcall(mrb, obj, "method_name", 1, mrb_fixnum_value(i));
  *        fclose(fp);
  *        mrb_close(mrb);
- *       }
- * @param [mrb_state*] mrb_state* The current mruby state.
- * @param [mrb_value] mrb_value A reference to an mruby value.
- * @param [const char*] const char* The name of the method.
- * @param [mrb_int] mrb_int The number of arguments the method has.
- * @param [...] ... Variadic values(not type safe!).
- * @return [mrb_value] mrb_value mruby function value.
+ *      }
+ *
+ * @param mrb The current mruby state.
+ * @param val A reference to an mruby value.
+ * @param name The name of the method.
+ * @param argc The number of arguments the method has.
+ * @param ... Variadic values(not type safe!).
+ * @return [mrb_value] mruby function value.
  */
-MRB_API mrb_value mrb_funcall(mrb_state*, mrb_value, const char*, mrb_int,...);
+MRB_API mrb_value mrb_funcall(mrb_state *mrb, mrb_value val, const char *name, mrb_int argc, ...);
 /**
  * Call existing ruby functions. This is basically the type safe version of mrb_funcall.
  *
@@ -942,32 +1034,35 @@ MRB_API mrb_value mrb_funcall(mrb_state*, mrb_value, const char*, mrb_int,...);
  *        fclose(fp);
  *        mrb_close(mrb);
  *       }
- * @param [mrb_state*] mrb_state* The current mruby state.
- * @param [mrb_value] mrb_value A reference to an mruby value.
- * @param [mrb_sym] mrb_sym The symbol representing the method.
- * @param [mrb_int] mrb_int The number of arguments the method has.
- * @param [const mrb_value*] mrb_value* Pointer to the object.
+ * @param mrb The current mruby state.
+ * @param val A reference to an mruby value.
+ * @param name_sym The symbol representing the method.
+ * @param argc The number of arguments the method has.
+ * @param obj Pointer to the object.
  * @return [mrb_value] mrb_value mruby function value.
  * @see mrb_funcall
  */
-MRB_API mrb_value mrb_funcall_argv(mrb_state*, mrb_value, mrb_sym, mrb_int, const mrb_value*);
+MRB_API mrb_value mrb_funcall_argv(mrb_state *mrb, mrb_value val, mrb_sym name, mrb_int argc, const mrb_value *argv);
 /**
  * Call existing ruby functions with a block.
  */
-MRB_API mrb_value mrb_funcall_with_block(mrb_state*, mrb_value, mrb_sym, mrb_int, const mrb_value*, mrb_value);
+MRB_API mrb_value mrb_funcall_with_block(mrb_state *mrb, mrb_value val, mrb_sym name, mrb_int argc, const mrb_value *argv, mrb_value block);
 /**
  * Create a symbol
  *
+ * Example:
+ *
  *     # Ruby style:
  *     :pizza # => :pizza
  *
  *     // C style:
  *     mrb_sym m_sym = mrb_intern_lit(mrb, "pizza"); //  => :pizza
- * @param [mrb_state*] mrb_state* The current mruby state.
- * @param [const char*] const char* The name of the method.
+ *
+ * @param mrb The current mruby state.
+ * @param str The string to be symbolized
  * @return [mrb_sym] mrb_sym A symbol.
  */
-MRB_API mrb_sym mrb_intern_cstr(mrb_state*,const char*);
+MRB_API mrb_sym mrb_intern_cstr(mrb_state *mrb, const char* str);
 MRB_API mrb_sym mrb_intern(mrb_state*,const char*,size_t);
 MRB_API mrb_sym mrb_intern_static(mrb_state*,const char*,size_t);
 #define mrb_intern_lit(mrb, lit) mrb_intern_static(mrb, lit, mrb_strlen_lit(lit))
@@ -975,9 +1070,13 @@ MRB_API mrb_sym mrb_intern_str(mrb_state*,mrb_value);
 MRB_API mrb_value mrb_check_intern_cstr(mrb_state*,const char*);
 MRB_API mrb_value mrb_check_intern(mrb_state*,const char*,size_t);
 MRB_API mrb_value mrb_check_intern_str(mrb_state*,mrb_value);
-MRB_API const char *mrb_sym2name(mrb_state*,mrb_sym);
-MRB_API const char *mrb_sym2name_len(mrb_state*,mrb_sym,mrb_int*);
-MRB_API mrb_value mrb_sym2str(mrb_state*,mrb_sym);
+MRB_API const char *mrb_sym_name(mrb_state*,mrb_sym);
+MRB_API const char *mrb_sym_name_len(mrb_state*,mrb_sym,mrb_int*);
+MRB_API const char *mrb_sym_dump(mrb_state*,mrb_sym);
+MRB_API mrb_value mrb_sym_str(mrb_state*,mrb_sym);
+#define mrb_sym2name(mrb,sym) mrb_sym_name(mrb,sym)
+#define mrb_sym2name_len(mrb,sym,len) mrb_sym_name_len(mrb,sym,len)
+#define mrb_sym2str(mrb,sym) mrb_sym_str(mrb,sym)
 
 MRB_API void *mrb_malloc(mrb_state*, size_t);         /* raise RuntimeError if no mem */
 MRB_API void *mrb_calloc(mrb_state*, size_t, size_t); /* ditto */
@@ -996,6 +1095,12 @@ MRB_API mrb_value mrb_str_new_cstr(mrb_state*, const char*);
 MRB_API mrb_value mrb_str_new_static(mrb_state *mrb, const char *p, size_t len);
 #define mrb_str_new_lit(mrb, lit) mrb_str_new_static(mrb, (lit), mrb_strlen_lit(lit))
 
+MRB_API mrb_value mrb_obj_freeze(mrb_state*, mrb_value);
+#define mrb_str_new_frozen(mrb,p,len) mrb_obj_freeze(mrb,mrb_str_new(mrb,p,len))
+#define mrb_str_new_cstr_frozen(mrb,p) mrb_obj_freeze(mrb,mrb_str_new_cstr(mrb,p))
+#define mrb_str_new_static_frozen(mrb,p,len) mrb_obj_freeze(mrb,mrb_str_new_static(mrb,p,len))
+#define mrb_str_new_lit_frozen(mrb,lit) mrb_obj_freeze(mrb,mrb_str_new_lit(mrb,lit))
+
 #ifdef _WIN32
 MRB_API char* mrb_utf8_from_locale(const char *p, int len);
 MRB_API char* mrb_locale_from_utf8(const char *p, int len);
@@ -1058,11 +1163,10 @@ MRB_API void mrb_close(mrb_state *mrb);
  */
 MRB_API void* mrb_default_allocf(mrb_state*, void*, size_t, void*);
 
-MRB_API mrb_value mrb_top_self(mrb_state *);
-MRB_API mrb_value mrb_run(mrb_state*, struct RProc*, mrb_value);
-MRB_API mrb_value mrb_top_run(mrb_state*, struct RProc*, mrb_value, unsigned int);
-MRB_API mrb_value mrb_vm_run(mrb_state*, struct RProc*, mrb_value, unsigned int);
-MRB_API mrb_value mrb_vm_exec(mrb_state*, struct RProc*, mrb_code*);
+MRB_API mrb_value mrb_top_self(mrb_state *mrb);
+MRB_API mrb_value mrb_top_run(mrb_state *mrb, struct RProc *proc, mrb_value self, unsigned int stack_keep);
+MRB_API mrb_value mrb_vm_run(mrb_state *mrb, struct RProc *proc, mrb_value self, unsigned int stack_keep);
+MRB_API mrb_value mrb_vm_exec(mrb_state *mrb, struct RProc *proc, const mrb_code *iseq);
 /* compatibility macros */
 #define mrb_toplevel_run_keep(m,p,k) mrb_top_run((m),(p),mrb_top_self(m),(k))
 #define mrb_toplevel_run(m,p) mrb_toplevel_run_keep((m),(p),0)
@@ -1072,8 +1176,8 @@ MRB_API void mrb_p(mrb_state*, mrb_value);
 MRB_API mrb_int mrb_obj_id(mrb_value obj);
 MRB_API mrb_sym mrb_obj_to_sym(mrb_state *mrb, mrb_value name);
 
-MRB_API mrb_bool mrb_obj_eq(mrb_state*, mrb_value, mrb_value);
-MRB_API mrb_bool mrb_obj_equal(mrb_state*, mrb_value, mrb_value);
+MRB_API mrb_bool mrb_obj_eq(mrb_state *mrb, mrb_value a, mrb_value b);
+MRB_API mrb_bool mrb_obj_equal(mrb_state *mrb, mrb_value a, mrb_value b);
 MRB_API mrb_bool mrb_equal(mrb_state *mrb, mrb_value obj1, mrb_value obj2);
 MRB_API mrb_value mrb_convert_to_integer(mrb_state *mrb, mrb_value val, mrb_int base);
 MRB_API mrb_value mrb_Integer(mrb_state *mrb, mrb_value val);
@@ -1082,17 +1186,16 @@ MRB_API mrb_value mrb_Float(mrb_state *mrb, mrb_value val);
 #endif
 MRB_API mrb_value mrb_inspect(mrb_state *mrb, mrb_value obj);
 MRB_API mrb_bool mrb_eql(mrb_state *mrb, mrb_value obj1, mrb_value obj2);
+/* mrb_cmp(mrb, obj1, obj2): 1:0:-1; -2 for error */
+MRB_API mrb_int mrb_cmp(mrb_state *mrb, mrb_value obj1, mrb_value obj2);
 
-static inline int mrb_gc_arena_save(mrb_state*);
-static inline void mrb_gc_arena_restore(mrb_state*,int);
-
-static inline int
+MRB_INLINE int
 mrb_gc_arena_save(mrb_state *mrb)
 {
   return mrb->gc.arena_idx;
 }
 
-static inline void
+MRB_INLINE void
 mrb_gc_arena_restore(mrb_state *mrb, int idx)
 {
   mrb->gc.arena_idx = idx;
@@ -1143,6 +1246,8 @@ MRB_API mrb_noreturn void mrb_exc_raise(mrb_state *mrb, mrb_value exc);
 MRB_API mrb_noreturn void mrb_raise(mrb_state *mrb, struct RClass *c, const char *msg);
 MRB_API mrb_noreturn void mrb_raisef(mrb_state *mrb, struct RClass *c, const char *fmt, ...);
 MRB_API mrb_noreturn void mrb_name_error(mrb_state *mrb, mrb_sym id, const char *fmt, ...);
+MRB_API mrb_noreturn void mrb_frozen_error(mrb_state *mrb, void *frozen_obj);
+MRB_API mrb_noreturn void mrb_argnum_error(mrb_state *mrb, mrb_int argc, int min, int max);
 MRB_API void mrb_warn(mrb_state *mrb, const char *fmt, ...);
 MRB_API mrb_noreturn void mrb_bug(mrb_state *mrb, const char *fmt, ...);
 MRB_API void mrb_print_backtrace(mrb_state *mrb);
@@ -1193,9 +1298,15 @@ MRB_API void mrb_gc_unregister(mrb_state *mrb, mrb_value obj);
 
 MRB_API mrb_value mrb_to_int(mrb_state *mrb, mrb_value val);
 #define mrb_int(mrb, val) mrb_fixnum(mrb_to_int(mrb, val))
+/* string type checking (contrary to the name, it doesn't convert) */
 MRB_API mrb_value mrb_to_str(mrb_state *mrb, mrb_value val);
 MRB_API void mrb_check_type(mrb_state *mrb, mrb_value x, enum mrb_vtype t);
 
+MRB_INLINE void mrb_check_frozen(mrb_state *mrb, void *o)
+{
+  if (mrb_frozen_p((struct RBasic*)o)) mrb_frozen_error(mrb, o);
+}
+
 typedef enum call_type {
   CALL_PUBLIC,
   CALL_FCALL,
@@ -1214,31 +1325,31 @@ MRB_API mrb_bool mrb_obj_is_instance_of(mrb_state *mrb, mrb_value obj, struct RC
 MRB_API mrb_bool mrb_func_basic_p(mrb_state *mrb, mrb_value obj, mrb_sym mid, mrb_func_t func);
 
 
-/*
+/**
  * Resume a Fiber
  *
- * @mrbgem mruby-fiber
+ * Implemented in mruby-fiber
  */
 MRB_API mrb_value mrb_fiber_resume(mrb_state *mrb, mrb_value fib, mrb_int argc, const mrb_value *argv);
 
-/*
+/**
  * Yield a Fiber
  *
- * @mrbgem mruby-fiber
+ * Implemented in mruby-fiber
  */
 MRB_API mrb_value mrb_fiber_yield(mrb_state *mrb, mrb_int argc, const mrb_value *argv);
 
-/*
+/**
  * Check if a Fiber is alive
  *
- * @mrbgem mruby-fiber
+ * Implemented in mruby-fiber
  */
 MRB_API mrb_value mrb_fiber_alive_p(mrb_state *mrb, mrb_value fib);
 
-/*
+/**
  * FiberError reference
  *
- * @mrbgem mruby-fiber
+ * Implemented in mruby-fiber
  */
 #define E_FIBER_ERROR (mrb_exc_get(mrb, "FiberError"))
 MRB_API void mrb_stack_extend(mrb_state*, mrb_int);
@@ -1250,6 +1361,7 @@ MRB_API void mrb_pool_close(struct mrb_pool*);
 MRB_API void* mrb_pool_alloc(struct mrb_pool*, size_t);
 MRB_API void* mrb_pool_realloc(struct mrb_pool*, void*, size_t oldlen, size_t newlen);
 MRB_API mrb_bool mrb_pool_can_realloc(struct mrb_pool*, void*, size_t);
+/* temporary memory allocation, only effective while GC arena is kept */
 MRB_API void* mrb_alloca(mrb_state *mrb, size_t);
 
 MRB_API void mrb_state_atexit(mrb_state *mrb, mrb_atexit_func func);

include/mruby/array.h

@@ -1,5 +1,5 @@
-/*
-** mruby/array.h - Array class
+/**
+** @file mruby/array.h - Array class
 **
 ** See Copyright Notice in mruby.h
 */
@@ -17,7 +17,7 @@ MRB_BEGIN_DECL
 
 typedef struct mrb_shared_array {
   int refcnt;
-  mrb_int len;
+  mrb_ssize len;
   mrb_value *ptr;
 } mrb_shared_array;
 
@@ -26,14 +26,14 @@ struct RArray {
   MRB_OBJECT_HEADER;
   union {
     struct {
-      mrb_int len;
+      mrb_ssize len;
       union {
-        mrb_int capa;
+        mrb_ssize capa;
         mrb_shared_array *shared;
       } aux;
       mrb_value *ptr;
     } heap;
-    mrb_value embed[MRB_ARY_EMBED_LEN_MAX];
+    void *ary[3];
   } as;
 };
 
@@ -46,7 +46,7 @@ struct RArray {
 #define ARY_UNSET_EMBED_FLAG(a) ((a)->flags &= ~(MRB_ARY_EMBED_MASK))
 #define ARY_EMBED_LEN(a) ((mrb_int)(((a)->flags & MRB_ARY_EMBED_MASK) - 1))
 #define ARY_SET_EMBED_LEN(a,len) ((a)->flags = ((a)->flags&~MRB_ARY_EMBED_MASK) | ((uint32_t)(len) + 1))
-#define ARY_EMBED_PTR(a) (&((a)->as.embed[0]))
+#define ARY_EMBED_PTR(a) ((mrb_value*)(&(a)->as.ary))
 
 #define ARY_LEN(a) (ARY_EMBED_P(a)?ARY_EMBED_LEN(a):(a)->as.heap.len)
 #define ARY_PTR(a) (ARY_EMBED_P(a)?ARY_EMBED_PTR(a):(a)->as.heap.ptr)
@@ -239,6 +239,7 @@ MRB_API mrb_value mrb_ary_entry(mrb_value ary, mrb_int offset);
  * @param head Beginning position of a replacement subsequence.
  * @param len Length of a replacement subsequence.
  * @param rpl The array of replacement elements.
+ *            It is possible to pass `mrb_undef_value()` instead of an empty array.
  * @return The receiver array.
  */
 MRB_API mrb_value mrb_ary_splice(mrb_state *mrb, mrb_value self, mrb_int head, mrb_int len, mrb_value rpl);
@@ -291,6 +292,9 @@ MRB_API mrb_value mrb_ary_join(mrb_state *mrb, mrb_value ary, mrb_value sep);
  */
 MRB_API mrb_value mrb_ary_resize(mrb_state *mrb, mrb_value ary, mrb_int new_len);
 
+/* helper functions */
+mrb_value mrb_ary_subseq(mrb_state *mrb, mrb_value ary, mrb_int beg, mrb_int len);
+
 MRB_END_DECL
 
 #endif  /* MRUBY_ARRAY_H */

include/mruby/boxing_nan.h

@@ -1,5 +1,5 @@
-/*
-** mruby/boxing_nan.h - nan boxing mrb_value definition
+/**
+** @file mruby/boxing_nan.h - nan boxing mrb_value definition
 **
 ** See Copyright Notice in mruby.h
 */
@@ -20,13 +20,7 @@
 #endif
 
 #define MRB_FIXNUM_SHIFT 0
-#define MRB_TT_HAS_BASIC MRB_TT_OBJECT
-
-#ifdef MRB_ENDIAN_BIG
-#define MRB_ENDIAN_LOHI(a,b) a b
-#else
-#define MRB_ENDIAN_LOHI(a,b) b a
-#endif
+#define MRB_SYMBOL_SHIFT 0
 
 /* value representation by nan-boxing:
  *   float : FFFFFFFFFFFFFFFF FFFFFFFFFFFFFFFF FFFFFFFFFFFFFFFF FFFFFFFFFFFFFFFF
@@ -50,6 +44,9 @@ typedef struct mrb_value {
           };
         )
       };
+#ifdef MRB_64BIT
+      struct RCptr *vp;
+#endif
     } value;
   };
 } mrb_value;
@@ -60,13 +57,15 @@ typedef struct mrb_value {
 #define mrb_type(o)     (enum mrb_vtype)((uint32_t)0xfff00000 < (o).value.ttt ? mrb_tt(o) : MRB_TT_FLOAT)
 #define mrb_ptr(o)      ((void*)((((uintptr_t)0x3fffffffffff)&((uintptr_t)((o).value.p)))<<2))
 #define mrb_float(o)    (o).f
-#define mrb_cptr(o)     mrb_ptr(o)
 #define mrb_fixnum(o)   (o).value.i
 #define mrb_symbol(o)   (o).value.sym
 
 #ifdef MRB_64BIT
+MRB_API mrb_value mrb_nan_boxing_cptr_value(struct mrb_state*, void*);
+#define mrb_cptr(o)     (((struct RCptr*)mrb_ptr(o))->p)
 #define BOXNAN_SHIFT_LONG_POINTER(v) (((uintptr_t)(v)>>34)&0x3fff)
 #else
+#define mrb_cptr(o)     ((o).value.p)
 #define BOXNAN_SHIFT_LONG_POINTER(v) 0
 #endif
 
@@ -96,7 +95,11 @@ typedef struct mrb_value {
 #define SET_INT_VALUE(r,n) BOXNAN_SET_VALUE(r, MRB_TT_FIXNUM, value.i, (n))
 #define SET_SYM_VALUE(r,v) BOXNAN_SET_VALUE(r, MRB_TT_SYMBOL, value.sym, (v))
 #define SET_OBJ_VALUE(r,v) BOXNAN_SET_OBJ_VALUE(r, (((struct RObject*)(v))->tt), (v))
-#define SET_CPTR_VALUE(mrb,r,v) BOXNAN_SET_OBJ_VALUE(r, MRB_TT_CPTR, v)
+#ifdef MRB_64BIT
+#define SET_CPTR_VALUE(mrb,r,v) ((r) = mrb_nan_boxing_cptr_value(mrb, v))
+#else
+#define SET_CPTR_VALUE(mrb,r,v) BOXNAN_SET_VALUE(r, MRB_TT_CPTR, value.p, v)
+#endif
 #define SET_UNDEF_VALUE(r) BOXNAN_SET_VALUE(r, MRB_TT_UNDEF, value.i, 0)
 
 #endif  /* MRUBY_BOXING_NAN_H */

include/mruby/boxing_no.h

@@ -1,5 +1,5 @@
-/*
-** mruby/boxing_no.h - unboxed mrb_value definition
+/**
+** @file mruby/boxing_no.h - unboxed mrb_value definition
 **
 ** See Copyright Notice in mruby.h
 */
@@ -8,17 +8,19 @@
 #define MRUBY_BOXING_NO_H
 
 #define MRB_FIXNUM_SHIFT 0
-#define MRB_TT_HAS_BASIC MRB_TT_OBJECT
+#define MRB_SYMBOL_SHIFT 0
+
+union mrb_value_union {
+#ifndef MRB_WITHOUT_FLOAT
+  mrb_float f;
+#endif
+  void *p;
+  mrb_int i;
+  mrb_sym sym;
+};
 
 typedef struct mrb_value {
-  union {
-#ifndef MRB_WITHOUT_FLOAT
-    mrb_float f;
-#endif
-    void *p;
-    mrb_int i;
-    mrb_sym sym;
-  } value;
+  union mrb_value_union value;
   enum mrb_vtype tt;
 } mrb_value;
 

include/mruby/boxing_word.h

@@ -1,5 +1,5 @@
-/*
-** mruby/boxing_word.h - word boxing mrb_value definition
+/**
+** @file mruby/boxing_word.h - word boxing mrb_value definition
 **
 ** See Copyright Notice in mruby.h
 */
@@ -7,10 +7,6 @@
 #ifndef MRUBY_BOXING_WORD_H
 #define MRUBY_BOXING_WORD_H
 
-#if defined(MRB_INT16)
-# error MRB_INT16 is too small for MRB_WORD_BOXING.
-#endif
-
 #if defined(MRB_INT64) && !defined(MRB_64BIT)
 #error MRB_INT64 cannot be used with MRB_WORD_BOXING in 32-bit mode.
 #endif
@@ -22,48 +18,66 @@ struct RFloat {
 };
 #endif
 
-struct RCptr {
-  MRB_OBJECT_HEADER;
-  void *p;
-};
-
-#define MRB_FIXNUM_SHIFT 1
-#ifdef MRB_WITHOUT_FLOAT
-#define MRB_TT_HAS_BASIC MRB_TT_CPTR
-#else
-#define MRB_TT_HAS_BASIC MRB_TT_FLOAT
-#endif
-
 enum mrb_special_consts {
-  MRB_Qnil    = 0,
-  MRB_Qfalse  = 2,
-  MRB_Qtrue   = 4,
-  MRB_Qundef  = 6,
+  MRB_Qnil    =  0,
+  MRB_Qfalse  =  4,
+  MRB_Qtrue   = 12,
+  MRB_Qundef  = 20,
 };
 
-#define MRB_FIXNUM_FLAG   0x01
-#define MRB_SYMBOL_FLAG   0x0e
-#define MRB_SPECIAL_SHIFT 8
-
-#if defined(MRB_64BIT)
-#define MRB_SYMBOL_BITSIZE  (sizeof(mrb_sym) * CHAR_BIT)
-#define MRB_SYMBOL_MAX      UINT32_MAX
+#if defined(MRB_64BIT) && defined(MRB_INT32)
+#define MRB_FIXNUM_SHIFT        0
 #else
-#define MRB_SYMBOL_BITSIZE  (sizeof(mrb_sym) * CHAR_BIT - MRB_SPECIAL_SHIFT)
-#define MRB_SYMBOL_MAX      (UINT32_MAX >> MRB_SPECIAL_SHIFT)
+#define MRB_FIXNUM_SHIFT        BOXWORD_FIXNUM_SHIFT
 #endif
+#define MRB_SYMBOL_SHIFT        BOXWORD_SYMBOL_SHIFT
 
+#define BOXWORD_FIXNUM_BIT_POS  1
+#define BOXWORD_SYMBOL_BIT_POS  2
+#define BOXWORD_FIXNUM_SHIFT    BOXWORD_FIXNUM_BIT_POS
+#ifdef MRB_64BIT
+#define BOXWORD_SYMBOL_SHIFT    0
+#else
+#define BOXWORD_SYMBOL_SHIFT    BOXWORD_SYMBOL_BIT_POS
+#endif
+#define BOXWORD_FIXNUM_FLAG     (1 << (BOXWORD_FIXNUM_BIT_POS - 1))
+#define BOXWORD_SYMBOL_FLAG     (1 << (BOXWORD_SYMBOL_BIT_POS - 1))
+#define BOXWORD_FIXNUM_MASK     ((1 << BOXWORD_FIXNUM_BIT_POS) - 1)
+#define BOXWORD_SYMBOL_MASK     ((1 << BOXWORD_SYMBOL_BIT_POS) - 1)
+#define BOXWORD_IMMEDIATE_MASK  0x07
+
+#define BOXWORD_SHIFT_VALUE(o,n,t) \
+  (t)(((long)(o).w) >> BOXWORD_##n##_SHIFT)
+#define BOXWORD_SET_SHIFT_VALUE(o,n,v) \
+  ((o).w = (((unsigned long)(v)) << BOXWORD_##n##_SHIFT) | BOXWORD_##n##_FLAG)
+#define BOXWORD_SHIFT_VALUE_P(o,n) \
+  (((o).w & BOXWORD_##n##_MASK) == BOXWORD_##n##_FLAG)
+#define BOXWORD_OBJ_TYPE_P(o,n) \
+  (!mrb_immediate_p(o) && (o).value.bp->tt == MRB_TT_##n)
+
+/*
+ * mrb_value representation:
+ *
+ *   nil   : ...0000 0000 (all bits are 0)
+ *   false : ...0000 0100 (mrb_fixnum(v) != 0)
+ *   true  : ...0000 1100
+ *   undef : ...0001 0100
+ *   fixnum: ...IIII III1
+ *   symbol: ...SSSS SS10 (use only upper 32-bit as symbol value on 64-bit CPU)
+ *   object: ...PPPP P000 (any bits are 1)
+ */
 typedef union mrb_value {
   union {
     void *p;
+#ifdef MRB_64BIT
+    /* use struct to avoid bit shift. */
     struct {
-      unsigned int i_flag : MRB_FIXNUM_SHIFT;
-      mrb_int i : (MRB_INT_BIT - MRB_FIXNUM_SHIFT);
-    };
-    struct {
-      unsigned int sym_flag : MRB_SPECIAL_SHIFT;
-      mrb_sym sym : MRB_SYMBOL_BITSIZE;
+      MRB_ENDIAN_LOHI(
+        mrb_sym sym;
+        ,uint32_t sym_flag;
+      )
     };
+#endif
     struct RBasic *bp;
 #ifndef MRB_WITHOUT_FLOAT
     struct RFloat *fp;
@@ -88,57 +102,73 @@ MRB_API mrb_value mrb_word_boxing_float_pool(struct mrb_state*, mrb_float);
 #ifndef MRB_WITHOUT_FLOAT
 #define mrb_float(o)   (o).value.fp->f
 #endif
-#define mrb_fixnum(o)  ((mrb_int)(o).value.i)
+#define mrb_fixnum(o)  BOXWORD_SHIFT_VALUE(o, FIXNUM, mrb_int)
+#ifdef MRB_64BIT
 #define mrb_symbol(o)  (o).value.sym
+#else
+#define mrb_symbol(o)  BOXWORD_SHIFT_VALUE(o, SYMBOL, mrb_sym)
+#endif
+#define mrb_bool(o)    (((o).w & ~(unsigned long)MRB_Qfalse) != 0)
 
-static inline enum mrb_vtype
-mrb_type(mrb_value o)
-{
-  switch (o.w) {
-  case MRB_Qfalse:
-  case MRB_Qnil:
-    return MRB_TT_FALSE;
-  case MRB_Qtrue:
-    return MRB_TT_TRUE;
-  case MRB_Qundef:
-    return MRB_TT_UNDEF;
-  }
-  if (o.value.i_flag == MRB_FIXNUM_FLAG) {
-    return MRB_TT_FIXNUM;
-  }
-  if (o.value.sym_flag == MRB_SYMBOL_FLAG) {
-    return MRB_TT_SYMBOL;
-  }
-  return o.value.bp->tt;
-}
-
-#define mrb_bool(o)    ((o).w != MRB_Qnil && (o).w != MRB_Qfalse)
-#define mrb_fixnum_p(o) ((o).value.i_flag == MRB_FIXNUM_FLAG)
+#define mrb_immediate_p(o) ((o).w & BOXWORD_IMMEDIATE_MASK || (o).w == MRB_Qnil)
+#define mrb_fixnum_p(o) BOXWORD_SHIFT_VALUE_P(o, FIXNUM)
+#ifdef MRB_64BIT
+#define mrb_symbol_p(o) ((o).value.sym_flag == BOXWORD_SYMBOL_FLAG)
+#else
+#define mrb_symbol_p(o) BOXWORD_SHIFT_VALUE_P(o, SYMBOL)
+#endif
 #define mrb_undef_p(o) ((o).w == MRB_Qundef)
 #define mrb_nil_p(o)  ((o).w == MRB_Qnil)
-
-#define BOXWORD_SET_VALUE(o, ttt, attr, v) do { \
-  switch (ttt) {\
-  case MRB_TT_FALSE:  (o).w = (v) ? MRB_Qfalse : MRB_Qnil; break;\
-  case MRB_TT_TRUE:   (o).w = MRB_Qtrue; break;\
-  case MRB_TT_UNDEF:  (o).w = MRB_Qundef; break;\
-  case MRB_TT_FIXNUM: (o).w = 0;(o).value.i_flag = MRB_FIXNUM_FLAG; (o).attr = (v); break;\
-  case MRB_TT_SYMBOL: (o).w = 0;(o).value.sym_flag = MRB_SYMBOL_FLAG; (o).attr = (v); break;\
-  default:            (o).w = 0; (o).attr = (v); if ((o).value.bp) (o).value.bp->tt = ttt; break;\
-  }\
-} while (0)
+#define mrb_false_p(o) ((o).w == MRB_Qfalse)
+#define mrb_true_p(o)  ((o).w == MRB_Qtrue)
+#ifndef MRB_WITHOUT_FLOAT
+#define mrb_float_p(o) BOXWORD_OBJ_TYPE_P(o, FLOAT)
+#endif
+#define mrb_array_p(o) BOXWORD_OBJ_TYPE_P(o, ARRAY)
+#define mrb_string_p(o) BOXWORD_OBJ_TYPE_P(o, STRING)
+#define mrb_hash_p(o) BOXWORD_OBJ_TYPE_P(o, HASH)
+#define mrb_cptr_p(o) BOXWORD_OBJ_TYPE_P(o, CPTR)
+#define mrb_exception_p(o) BOXWORD_OBJ_TYPE_P(o, EXCEPTION)
+#define mrb_free_p(o) BOXWORD_OBJ_TYPE_P(o, FREE)
+#define mrb_object_p(o) BOXWORD_OBJ_TYPE_P(o, OBJECT)
+#define mrb_class_p(o) BOXWORD_OBJ_TYPE_P(o, CLASS)
+#define mrb_module_p(o) BOXWORD_OBJ_TYPE_P(o, MODULE)
+#define mrb_iclass_p(o) BOXWORD_OBJ_TYPE_P(o, ICLASS)
+#define mrb_sclass_p(o) BOXWORD_OBJ_TYPE_P(o, SCLASS)
+#define mrb_proc_p(o) BOXWORD_OBJ_TYPE_P(o, PROC)
+#define mrb_range_p(o) BOXWORD_OBJ_TYPE_P(o, RANGE)
+#define mrb_env_p(o) BOXWORD_OBJ_TYPE_P(o, ENV)
+#define mrb_data_p(o) BOXWORD_OBJ_TYPE_P(o, DATA)
+#define mrb_fiber_p(o) BOXWORD_OBJ_TYPE_P(o, FIBER)
+#define mrb_istruct_p(o) BOXWORD_OBJ_TYPE_P(o, ISTRUCT)
+#define mrb_break_p(o) BOXWORD_OBJ_TYPE_P(o, BREAK)
 
 #ifndef MRB_WITHOUT_FLOAT
 #define SET_FLOAT_VALUE(mrb,r,v) ((r) = mrb_word_boxing_float_value(mrb, v))
 #endif
 #define SET_CPTR_VALUE(mrb,r,v) ((r) = mrb_word_boxing_cptr_value(mrb, v))
-#define SET_NIL_VALUE(r) BOXWORD_SET_VALUE(r, MRB_TT_FALSE, value.i, 0)
-#define SET_FALSE_VALUE(r) BOXWORD_SET_VALUE(r, MRB_TT_FALSE, value.i, 1)
-#define SET_TRUE_VALUE(r) BOXWORD_SET_VALUE(r, MRB_TT_TRUE, value.i, 1)
-#define SET_BOOL_VALUE(r,b) BOXWORD_SET_VALUE(r, (b) ? MRB_TT_TRUE : MRB_TT_FALSE, value.i, 1)
-#define SET_INT_VALUE(r,n) BOXWORD_SET_VALUE(r, MRB_TT_FIXNUM, value.i, (n))
-#define SET_SYM_VALUE(r,v) BOXWORD_SET_VALUE(r, MRB_TT_SYMBOL, value.sym, (v))
-#define SET_OBJ_VALUE(r,v) BOXWORD_SET_VALUE(r, (((struct RObject*)(v))->tt), value.p, (v))
-#define SET_UNDEF_VALUE(r) BOXWORD_SET_VALUE(r, MRB_TT_UNDEF, value.i, 0)
+#define SET_UNDEF_VALUE(r) ((r).w = MRB_Qundef)
+#define SET_NIL_VALUE(r) ((r).w = MRB_Qnil)
+#define SET_FALSE_VALUE(r) ((r).w = MRB_Qfalse)
+#define SET_TRUE_VALUE(r) ((r).w = MRB_Qtrue)
+#define SET_BOOL_VALUE(r,b) ((b) ? SET_TRUE_VALUE(r) : SET_FALSE_VALUE(r))
+#define SET_INT_VALUE(r,n) BOXWORD_SET_SHIFT_VALUE(r, FIXNUM, n)
+#ifdef MRB_64BIT
+#define SET_SYM_VALUE(r,v) ((r).value.sym = v, (r).value.sym_flag = BOXWORD_SYMBOL_FLAG)
+#else
+#define SET_SYM_VALUE(r,n) BOXWORD_SET_SHIFT_VALUE(r, SYMBOL, n)
+#endif
+#define SET_OBJ_VALUE(r,v) ((r).value.p = v)
+
+MRB_INLINE enum mrb_vtype
+mrb_type(mrb_value o)
+{
+  return !mrb_bool(o)    ? MRB_TT_FALSE :
+         mrb_true_p(o)   ? MRB_TT_TRUE :
+         mrb_fixnum_p(o) ? MRB_TT_FIXNUM :
+         mrb_symbol_p(o) ? MRB_TT_SYMBOL :
+         mrb_undef_p(o)  ? MRB_TT_UNDEF :
+         o.value.bp->tt;
+}
 
 #endif  /* MRUBY_BOXING_WORD_H */

include/mruby/class.h

@@ -1,5 +1,5 @@
-/*
-** mruby/class.h - Class class
+/**
+** @file mruby/class.h - Class class
 **
 ** See Copyright Notice in mruby.h
 */
@@ -23,7 +23,7 @@ struct RClass {
 
 #define mrb_class_ptr(v)    ((struct RClass*)(mrb_ptr(v)))
 
-static inline struct RClass*
+MRB_INLINE struct RClass*
 mrb_class(mrb_state *mrb, mrb_value v)
 {
   switch (mrb_type(v)) {
@@ -75,8 +75,8 @@ mrb_class(mrb_state *mrb, mrb_value v)
 
 MRB_API struct RClass* mrb_define_class_id(mrb_state*, mrb_sym, struct RClass*);
 MRB_API struct RClass* mrb_define_module_id(mrb_state*, mrb_sym);
-MRB_API struct RClass *mrb_vm_define_class(mrb_state*, mrb_value, mrb_value, mrb_sym);
-MRB_API struct RClass *mrb_vm_define_module(mrb_state*, mrb_value, mrb_sym);
+struct RClass *mrb_vm_define_class(mrb_state*, mrb_value, mrb_value, mrb_sym);
+struct RClass *mrb_vm_define_module(mrb_state*, mrb_value, mrb_sym);
 MRB_API void mrb_define_method_raw(mrb_state*, struct RClass*, mrb_sym, mrb_method_t);
 MRB_API void mrb_define_method_id(mrb_state *mrb, struct RClass *c, mrb_sym mid, mrb_func_t func, mrb_aspec aspec);
 MRB_API void mrb_alias_method(mrb_state*, struct RClass *c, mrb_sym a, mrb_sym b);
@@ -85,13 +85,22 @@ MRB_API mrb_method_t mrb_method_search_vm(mrb_state*, struct RClass**, mrb_sym);
 MRB_API mrb_method_t mrb_method_search(mrb_state*, struct RClass*, mrb_sym);
 
 MRB_API struct RClass* mrb_class_real(struct RClass* cl);
+mrb_value mrb_instance_new(mrb_state *mrb, mrb_value cv);
 
 void mrb_class_name_class(mrb_state*, struct RClass*, struct RClass*, mrb_sym);
+mrb_bool mrb_const_name_p(mrb_state*, const char*, mrb_int);
 mrb_value mrb_class_find_path(mrb_state*, struct RClass*);
+mrb_value mrb_mod_to_s(mrb_state*, mrb_value);
 void mrb_gc_mark_mt(mrb_state*, struct RClass*);
 size_t mrb_gc_mark_mt_size(mrb_state*, struct RClass*);
 void mrb_gc_free_mt(mrb_state*, struct RClass*);
 
+#ifdef MRB_METHOD_CACHE
+void mrb_mc_clear_by_class(mrb_state *mrb, struct RClass* c);
+#else
+#define mrb_mc_clear_by_class(mrb,c)
+#endif
+
 MRB_END_DECL
 
 #endif  /* MRUBY_CLASS_H */

include/mruby/common.h

@@ -1,5 +1,5 @@
-/*
-**"common.h - mruby common platform definition"
+/**
+** @file common.h - mruby common platform definition"
 **
 ** See Copyright Notice in mruby.h
 */
@@ -54,14 +54,15 @@ MRB_BEGIN_DECL
 #endif
 
 /** Declare a function as always inlined. */
-#if defined(_MSC_VER)
-# define MRB_INLINE static __inline
-#else
-# define MRB_INLINE static inline
+#if defined _MSC_VER && _MSC_VER < 1900
+# ifndef __cplusplus
+#  define inline __inline
+# endif
 #endif
-
+#define MRB_INLINE static inline
 
 /** Declare a public MRuby API function. */
+#ifndef MRB_API
 #if defined(MRB_BUILD_AS_DLL)
 #if defined(MRB_CORE) || defined(MRB_LIB)
 # define MRB_API __declspec(dllexport)
@@ -71,6 +72,17 @@ MRB_BEGIN_DECL
 #else
 # define MRB_API extern
 #endif
+#endif
+
+/** Declare mingw versions */
+#if defined(__MINGW32__) || defined(__MINGW64__)
+# include <_mingw.h>
+# if defined(__MINGW64_VERSION_MAJOR)
+#  define MRB_MINGW64_VERSION  (__MINGW64_VERSION_MAJOR * 1000 + __MINGW64_VERSION_MINOR)
+# elif defined(__MINGW32_MAJOR_VERSION)
+#  define MRB_MINGW32_VERSION  (__MINGW32_MAJOR_VERSION * 1000 + __MINGW32_MINOR_VERSION)
+# endif
+#endif
 
 MRB_END_DECL
 

include/mruby/compile.h

@@ -1,5 +1,5 @@
-/*
-** mruby/compile.h - mruby parser
+/**
+** @file mruby/compile.h - mruby parser
 **
 ** See Copyright Notice in mruby.h
 */
@@ -24,7 +24,7 @@ typedef struct mrbc_context {
   mrb_sym *syms;
   int slen;
   char *filename;
-  short lineno;
+  uint16_t lineno;
   int (*partial_hook)(struct mrb_parser_state*);
   void *partial_data;
   struct RClass *target_class;
@@ -33,7 +33,7 @@ typedef struct mrbc_context {
   mrb_bool no_exec:1;
   mrb_bool keep_lv:1;
   mrb_bool no_optimize:1;
-  mrb_bool on_eval:1;
+  struct RProc *upper;
 
   size_t parser_nerr;
 } mrbc_context;
@@ -67,7 +67,7 @@ enum mrb_lex_state_enum {
 
 /* saved error message */
 struct mrb_parser_message {
-  int lineno;
+  uint16_t lineno;
   int column;
   char* message;
 };
@@ -105,7 +105,7 @@ struct mrb_parser_heredoc_info {
   mrb_ast_node *doc;
 };
 
-#define MRB_PARSER_TOKBUF_MAX 65536
+#define MRB_PARSER_TOKBUF_MAX (UINT16_MAX-1)
 #define MRB_PARSER_TOKBUF_SIZE 256
 
 /* parser structure */
@@ -119,7 +119,7 @@ struct mrb_parser_state {
 #endif
   mrbc_context *cxt;
   mrb_sym filename_sym;
-  int lineno;
+  uint16_t lineno;
   int column;
 
   enum mrb_lex_state_enum lstate;
@@ -151,8 +151,8 @@ struct mrb_parser_state {
   mrb_ast_node *tree;
 
   mrb_bool no_optimize:1;
-  mrb_bool on_eval:1;
   mrb_bool capture_errors:1;
+  struct RProc *upper;
   struct mrb_parser_message error_buffer[10];
   struct mrb_parser_message warn_buffer[10];
 
@@ -161,6 +161,7 @@ struct mrb_parser_state {
   uint16_t current_filename_index;
 
   struct mrb_jmpbuf* jmp;
+  mrb_ast_node *nvars;
 };
 
 MRB_API struct mrb_parser_state* mrb_parser_new(mrb_state*);
@@ -179,7 +180,15 @@ MRB_API struct mrb_parser_state* mrb_parse_nstring(mrb_state*,const char*,size_t
 MRB_API struct RProc* mrb_generate_code(mrb_state*, struct mrb_parser_state*);
 MRB_API mrb_value mrb_load_exec(mrb_state *mrb, struct mrb_parser_state *p, mrbc_context *c);
 
-/* program load functions */
+/** program load functions 
+* Please note! Currently due to interactions with the GC calling these functions will 
+* leak one RProc object per function call.
+* To prevent this save the current memory arena before calling and restore the arena
+* right after, like so
+* int ai = mrb_gc_arena_save(mrb);
+* mrb_value status = mrb_load_string(mrb, buffer);
+* mrb_gc_arena_restore(mrb, ai);
+*/
 #ifndef MRB_DISABLE_STDIO
 MRB_API mrb_value mrb_load_file(mrb_state*,FILE*);
 MRB_API mrb_value mrb_load_file_cxt(mrb_state*,FILE*, mrbc_context *cxt);

include/mruby/data.h

@@ -1,5 +1,5 @@
-/*
-** mruby/data.h - Data class
+/**
+** @file mruby/data.h - Data class
 **
 ** See Copyright Notice in mruby.h
 */
@@ -41,7 +41,7 @@ MRB_API struct RData *mrb_data_object_alloc(mrb_state *mrb, struct RClass* klass
 
 #define Data_Make_Struct(mrb,klass,strct,type,sval,data_obj) do { \
   (data_obj) = Data_Wrap_Struct(mrb,klass,type,NULL);\
-  (sval) = mrb_malloc(mrb, sizeof(strct));                     \
+  (sval) = (strct *)mrb_malloc(mrb, sizeof(strct));                     \
   { static const strct zero = { 0 }; *(sval) = zero; };\
   (data_obj)->data = (sval);\
 } while (0)
@@ -63,10 +63,10 @@ MRB_API void *mrb_data_check_get_ptr(mrb_state *mrb, mrb_value, const mrb_data_t
   *(void**)&sval = mrb_data_get_ptr(mrb, obj, type); \
 } while (0)
 
-static inline void
+MRB_INLINE void
 mrb_data_init(mrb_value v, void *ptr, const mrb_data_type *type)
 {
-  mrb_assert(mrb_type(v) == MRB_TT_DATA);
+  mrb_assert(mrb_data_p(v));
   DATA_PTR(v) = ptr;
   DATA_TYPE(v) = type;
 }

include/mruby/debug.h

@@ -1,5 +1,5 @@
-/*
-** mruby/debug.h - mruby debug info
+/**
+** @file mruby/debug.h - mruby debug info
 **
 ** See Copyright Notice in mruby.h
 */

include/mruby/dump.h

@@ -1,5 +1,5 @@
-/*
-** mruby/dump.h - mruby binary dumper (mrbc binary format)
+/**
+** @file mruby/dump.h - mruby binary dumper (mrbc binary format)
 **
 ** See Copyright Notice in mruby.h
 */
@@ -17,10 +17,6 @@
 MRB_BEGIN_DECL
 
 #define DUMP_DEBUG_INFO 1
-#define DUMP_ENDIAN_BIG 2
-#define DUMP_ENDIAN_LIL 4
-#define DUMP_ENDIAN_NAT 6
-#define DUMP_ENDIAN_MASK 6
 
 int mrb_dump_irep(mrb_state *mrb, mrb_irep *irep, uint8_t flags, uint8_t **bin, size_t *bin_size);
 #ifndef MRB_DISABLE_STDIO
@@ -31,6 +27,7 @@ MRB_API mrb_value mrb_load_irep_file(mrb_state*,FILE*);
 MRB_API mrb_value mrb_load_irep_file_cxt(mrb_state*, FILE*, mrbc_context*);
 #endif
 MRB_API mrb_irep *mrb_read_irep(mrb_state*, const uint8_t*);
+MRB_API mrb_irep *mrb_read_irep_buf(mrb_state*, const void*, size_t);
 
 /* dump/load error code
  *
@@ -51,8 +48,7 @@ MRB_API mrb_irep *mrb_read_irep(mrb_state*, const uint8_t*);
 
 /* Rite Binary File header */
 #define RITE_BINARY_IDENT              "RITE"
-#define RITE_BINARY_IDENT_LIL          "ETIR"
-#define RITE_BINARY_FORMAT_VER         "0006"
+#define RITE_BINARY_FORMAT_VER         "0007"
 #define RITE_COMPILER_NAME             "MATZ"
 #define RITE_COMPILER_VERSION          "0000"
 
@@ -60,7 +56,6 @@ MRB_API mrb_irep *mrb_read_irep(mrb_state*, const uint8_t*);
 
 #define RITE_BINARY_EOF                "END\0"
 #define RITE_SECTION_IREP_IDENT        "IREP"
-#define RITE_SECTION_LINENO_IDENT      "LINE"
 #define RITE_SECTION_DEBUG_IDENT       "DBG\0"
 #define RITE_SECTION_LV_IDENT          "LVAR"
 
@@ -92,10 +87,6 @@ struct rite_section_irep_header {
   uint8_t rite_version[4];    /* Rite Instruction Specification Version */
 };
 
-struct rite_section_lineno_header {
-  RITE_SECTION_HEADER;
-};
-
 struct rite_section_debug_header {
   RITE_SECTION_HEADER;
 };
@@ -110,17 +101,6 @@ struct rite_binary_footer {
   RITE_SECTION_HEADER;
 };
 
-static inline int
-bigendian_p()
-{
-  int i;
-  char *p;
-
-  i = 1;
-  p = (char*)&i;
-  return p[0]?0:1;
-}
-
 static inline size_t
 uint8_to_bin(uint8_t s, uint8_t *bin)
 {

include/mruby/error.h

@@ -1,5 +1,5 @@
-/*
-** mruby/error.h - Exception class
+/**
+** @file mruby/error.h - Exception class
 **
 ** See Copyright Notice in mruby.h
 */
@@ -32,23 +32,51 @@ MRB_API mrb_noreturn void mrb_no_method_error(mrb_state *mrb, mrb_sym id, mrb_va
 /* declaration for `fail` method */
 MRB_API mrb_value mrb_f_raise(mrb_state*, mrb_value);
 
+#if defined(MRB_64BIT) || defined(MRB_USE_FLOAT) || defined(MRB_NAN_BOXING) || defined(MRB_WORD_BOXING)
 struct RBreak {
   MRB_OBJECT_HEADER;
   struct RProc *proc;
   mrb_value val;
 };
+#define mrb_break_value_get(brk) ((brk)->val)
+#define mrb_break_value_set(brk, v) ((brk)->val = v)
+#else
+struct RBreak {
+  MRB_OBJECT_HEADER;
+  struct RProc *proc;
+  union mrb_value_union value;
+};
+#define RBREAK_VALUE_TT_MASK ((1 << 8) - 1)
+static inline mrb_value
+mrb_break_value_get(struct RBreak *brk)
+{
+  mrb_value val;
+  val.value = brk->value;
+  val.tt = (enum mrb_vtype)(brk->flags & RBREAK_VALUE_TT_MASK);
+  return val;
+}
+static inline void
+mrb_break_value_set(struct RBreak *brk, mrb_value val)
+{
+  brk->value = val.value;
+  brk->flags &= ~RBREAK_VALUE_TT_MASK;
+  brk->flags |= val.tt;
+}
+#endif  /* MRB_64BIT || MRB_USE_FLOAT || MRB_NAN_BOXING || MRB_WORD_BOXING */
+#define mrb_break_proc_get(brk) ((brk)->proc)
+#define mrb_break_proc_set(brk, p) ((brk)->proc = p)
 
 /**
  * Protect
  *
- * @mrbgem mruby-error
+ * Implemented in the mruby-error mrbgem
  */
 MRB_API mrb_value mrb_protect(mrb_state *mrb, mrb_func_t body, mrb_value data, mrb_bool *state);
 
 /**
  * Ensure
  *
- * @mrbgem mruby-error
+ * Implemented in the mruby-error mrbgem
  */
 MRB_API mrb_value mrb_ensure(mrb_state *mrb, mrb_func_t body, mrb_value b_data,
                              mrb_func_t ensure, mrb_value e_data);
@@ -56,7 +84,7 @@ MRB_API mrb_value mrb_ensure(mrb_state *mrb, mrb_func_t body, mrb_value b_data,
 /**
  * Rescue
  *
- * @mrbgem mruby-error
+ * Implemented in the mruby-error mrbgem
  */
 MRB_API mrb_value mrb_rescue(mrb_state *mrb, mrb_func_t body, mrb_value b_data,
                              mrb_func_t rescue, mrb_value r_data);
@@ -64,7 +92,7 @@ MRB_API mrb_value mrb_rescue(mrb_state *mrb, mrb_func_t body, mrb_value b_data,
 /**
  * Rescue exception
  *
- * @mrbgem mruby-error
+ * Implemented in the mruby-error mrbgem
  */
 MRB_API mrb_value mrb_rescue_exceptions(mrb_state *mrb, mrb_func_t body, mrb_value b_data,
                                         mrb_func_t rescue, mrb_value r_data,

include/mruby/gc.h

@@ -1,5 +1,5 @@
-/*
-** mruby/gc.h - garbage collector for mruby
+/**
+** @file mruby/gc.h - garbage collector for mruby
 **
 ** See Copyright Notice in mruby.h
 */

include/mruby/hash.h

@@ -1,5 +1,5 @@
-/*
-** mruby/hash.h - Hash class
+/**
+** @file mruby/hash.h - Hash class
 **
 ** See Copyright Notice in mruby.h
 */
@@ -23,7 +23,7 @@ struct RHash {
 #define mrb_hash_ptr(v)    ((struct RHash*)(mrb_ptr(v)))
 #define mrb_hash_value(p)  mrb_obj_value((void*)(p))
 
-MRB_API mrb_value mrb_hash_new_capa(mrb_state*, mrb_int);
+MRB_API mrb_value mrb_hash_new_capa(mrb_state *mrb, mrb_int capa);
 MRB_API mrb_value mrb_ensure_hash_type(mrb_state *mrb, mrb_value hash);
 MRB_API mrb_value mrb_check_hash_type(mrb_state *mrb, mrb_value hash);
 
@@ -95,7 +95,7 @@ MRB_API mrb_value mrb_hash_fetch(mrb_state *mrb, mrb_value hash, mrb_value key,
  * @param mrb The mruby state reference.
  * @param hash The target hash.
  * @param key The key to delete.
- * @return The deleted value.
+ * @return The deleted value. This value is not protected from GC. Use `mrb_gc_protect()` if necessary.
  */
 MRB_API mrb_value mrb_hash_delete_key(mrb_state *mrb, mrb_value hash, mrb_value key);
 
@@ -197,13 +197,6 @@ MRB_API mrb_value mrb_hash_dup(mrb_state *mrb, mrb_value hash);
  */
 MRB_API void mrb_hash_merge(mrb_state *mrb, mrb_value hash1, mrb_value hash2);
 
-/* declaration of struct mrb_hash_value */
-/* be careful when you touch the internal */
-typedef struct {
-  mrb_value v;
-  mrb_int n;
-} mrb_hash_value;
-
 /* RHASH_TBL allocates st_table if not available. */
 #define RHASH(obj)   ((struct RHash*)(mrb_ptr(obj)))
 #define RHASH_TBL(h)          (RHASH(h)->ht)

include/mruby/irep.h

@@ -1,5 +1,5 @@
-/*
-** mruby/irep.h - mrb_irep structure
+/**
+** @file mruby/irep.h - mrb_irep structure
 **
 ** See Copyright Notice in mruby.h
 */
@@ -32,7 +32,7 @@ typedef struct mrb_irep {
   uint16_t nregs;          /* Number of register variables */
   uint8_t flags;
 
-  mrb_code *iseq;
+  const mrb_code *iseq;
   mrb_value *pool;
   mrb_sym *syms;
   struct mrb_irep **reps;
@@ -49,12 +49,34 @@ typedef struct mrb_irep {
 
 MRB_API mrb_irep *mrb_add_irep(mrb_state *mrb);
 
+/** load mruby bytecode functions
+* Please note! Currently due to interactions with the GC calling these functions will
+* leak one RProc object per function call.
+* To prevent this save the current memory arena before calling and restore the arena
+* right after, like so
+* int ai = mrb_gc_arena_save(mrb);
+* mrb_value status = mrb_load_irep(mrb, buffer);
+* mrb_gc_arena_restore(mrb, ai);
+*/
+
 /* @param [const uint8_t*] irep code, expected as a literal */
 MRB_API mrb_value mrb_load_irep(mrb_state*, const uint8_t*);
 
+/*
+ * @param [const void*] irep code
+ * @param [size_t] size of irep buffer. If -1 is given, it is considered unrestricted.
+ */
+MRB_API mrb_value mrb_load_irep_buf(mrb_state*, const void*, size_t);
+
 /* @param [const uint8_t*] irep code, expected as a literal */
 MRB_API mrb_value mrb_load_irep_cxt(mrb_state*, const uint8_t*, mrbc_context*);
 
+/*
+ * @param [const void*] irep code
+ * @param [size_t] size of irep buffer. If -1 is given, it is considered unrestricted.
+ */
+MRB_API mrb_value mrb_load_irep_buf_cxt(mrb_state*, const void*, size_t, mrbc_context*);
+
 void mrb_irep_free(mrb_state*, struct mrb_irep*);
 void mrb_irep_incref(mrb_state*, struct mrb_irep*);
 void mrb_irep_decref(mrb_state*, struct mrb_irep*);
@@ -68,7 +90,7 @@ struct mrb_insn_data {
   uint8_t c;
 };
 
-struct mrb_insn_data mrb_decode_insn(mrb_code *pc);
+struct mrb_insn_data mrb_decode_insn(const mrb_code *pc);
 
 MRB_END_DECL
 

include/mruby/istruct.h

@@ -1,5 +1,5 @@
-/*
-** mruby/istruct.h - Inline structures
+/**
+** @file mruby/istruct.h - Inline structures
 **
 ** See Copyright Notice in mruby.h
 */
@@ -19,12 +19,15 @@ MRB_BEGIN_DECL
 
 #define ISTRUCT_DATA_SIZE (sizeof(void*) * 3)
 
-struct RIstruct {
+struct RIStruct {
   MRB_OBJECT_HEADER;
-  char inline_data[ISTRUCT_DATA_SIZE];
+  union {
+    intptr_t inline_alignment[3];
+    char inline_data[ISTRUCT_DATA_SIZE];
+  };
 };
 
-#define RISTRUCT(obj)         ((struct RIstruct*)(mrb_ptr(obj)))
+#define RISTRUCT(obj)         ((struct RIStruct*)(mrb_ptr(obj)))
 #define ISTRUCT_PTR(obj)      (RISTRUCT(obj)->inline_data)
 
 MRB_INLINE mrb_int mrb_istruct_size()

include/mruby/khash.h

@@ -1,5 +1,5 @@
-/*
-** mruby/khash.c - Hash for mruby
+/**
+** @file mruby/khash.h - Hash for mruby
 **
 ** See Copyright Notice in mruby.h
 */
@@ -73,6 +73,7 @@ static const uint8_t __m_either[] = {0x03, 0x0c, 0x30, 0xc0};
   void kh_clear_##name(mrb_state *mrb, kh_##name##_t *h);               \
   khint_t kh_get_##name(mrb_state *mrb, kh_##name##_t *h, khkey_t key);           \
   khint_t kh_put_##name(mrb_state *mrb, kh_##name##_t *h, khkey_t key, int *ret); \
+  void kh_put_prepare_##name(mrb_state *mrb, kh_##name##_t *h);                   \
   void kh_resize_##name(mrb_state *mrb, kh_##name##_t *h, khint_t new_n_buckets); \
   void kh_del_##name(mrb_state *mrb, kh_##name##_t *h, khint_t x);                \
   kh_##name##_t *kh_copy_##name(mrb_state *mrb, kh_##name##_t *h);
@@ -95,16 +96,25 @@ kh_fill_flags(uint8_t *p, uint8_t c, size_t len)
    __hash_equal: hash comparation function
 */
 #define KHASH_DEFINE(name, khkey_t, khval_t, kh_is_map, __hash_func, __hash_equal) \
-  void kh_alloc_##name(mrb_state *mrb, kh_##name##_t *h)                \
+  mrb_noreturn void mrb_raise_nomemory(mrb_state *mrb);                 \
+  int kh_alloc_simple_##name(mrb_state *mrb, kh_##name##_t *h)          \
   {                                                                     \
     khint_t sz = h->n_buckets;                                          \
     size_t len = sizeof(khkey_t) + (kh_is_map ? sizeof(khval_t) : 0);   \
-    uint8_t *p = (uint8_t*)mrb_malloc(mrb, sizeof(uint8_t)*sz/4+len*sz); \
+    uint8_t *p = (uint8_t*)mrb_malloc_simple(mrb, sizeof(uint8_t)*sz/4+len*sz); \
+    if (!p) { return 1; }                                               \
     h->size = h->n_occupied = 0;                                        \
     h->keys = (khkey_t *)p;                                             \
     h->vals = kh_is_map ? (khval_t *)(p+sizeof(khkey_t)*sz) : NULL;     \
     h->ed_flags = p+len*sz;                                             \
     kh_fill_flags(h->ed_flags, 0xaa, sz/4);                             \
+    return 0;                                                           \
+  }                                                                     \
+  void kh_alloc_##name(mrb_state *mrb, kh_##name##_t *h)                \
+  {                                                                     \
+    if (kh_alloc_simple_##name(mrb, h)) {                               \
+      mrb_raise_nomemory(mrb);                                          \
+    }                                                                   \
   }                                                                     \
   kh_##name##_t *kh_init_##name##_size(mrb_state *mrb, khint_t size) {  \
     kh_##name##_t *h = (kh_##name##_t*)mrb_calloc(mrb, 1, sizeof(kh_##name##_t)); \
@@ -112,7 +122,10 @@ kh_fill_flags(uint8_t *p, uint8_t c, size_t len)
       size = KHASH_MIN_SIZE;                                            \
     khash_power2(size);                                                 \
     h->n_buckets = size;                                                \
-    kh_alloc_##name(mrb, h);                                            \
+    if (kh_alloc_simple_##name(mrb, h)) {                               \
+      mrb_free(mrb, h);                                                 \
+      mrb_raise_nomemory(mrb);                                          \
+    }                                                                   \
     return h;                                                           \
   }                                                                     \
   kh_##name##_t *kh_init_##name(mrb_state *mrb) {                       \
@@ -171,12 +184,16 @@ kh_fill_flags(uint8_t *p, uint8_t c, size_t len)
       mrb_free(mrb, old_keys);                                          \
     }                                                                   \
   }                                                                     \
-  khint_t kh_put_##name(mrb_state *mrb, kh_##name##_t *h, khkey_t key, int *ret) \
+  void kh_put_prepare_##name(mrb_state *mrb, kh_##name##_t *h)          \
   {                                                                     \
-    khint_t k, del_k, step = 0;                                         \
     if (h->n_occupied >= khash_upper_bound(h)) {                        \
       kh_resize_##name(mrb, h, h->n_buckets*2);                         \
     }                                                                   \
+  }                                                                     \
+  khint_t kh_put_##name(mrb_state *mrb, kh_##name##_t *h, khkey_t key, int *ret) \
+  {                                                                     \
+    khint_t k, del_k, step = 0;                                         \
+    kh_put_prepare_##name(mrb, h);                                      \
     k = __hash_func(mrb,key) & khash_mask(h);                           \
     del_k = kh_end(h);                                                  \
     while (!__ac_isempty(h->ed_flags, k)) {                             \
@@ -239,6 +256,7 @@ kh_fill_flags(uint8_t *p, uint8_t c, size_t len)
 #define kh_destroy(name, mrb, h) kh_destroy_##name(mrb, h)
 #define kh_clear(name, mrb, h) kh_clear_##name(mrb, h)
 #define kh_resize(name, mrb, h, s) kh_resize_##name(mrb, h, s)
+#define kh_put_prepare(name, mrb, h) kh_put_prepare_##name(mrb, h)
 #define kh_put(name, mrb, h, k) kh_put_##name(mrb, h, k, NULL)
 #define kh_put2(name, mrb, h, k, r) kh_put_##name(mrb, h, k, r)
 #define kh_get(name, mrb, h, k) kh_get_##name(mrb, h, k)

include/mruby/numeric.h

@@ -1,5 +1,5 @@
-/*
-** mruby/numeric.h - Numeric, Integer, Float, Fixnum class
+/**
+** @file mruby/numeric.h - Numeric, Integer, Float, Fixnum class
 **
 ** See Copyright Notice in mruby.h
 */
@@ -23,7 +23,11 @@ MRB_BEGIN_DECL
 #define NEGFIXABLE(f) TYPED_NEGFIXABLE(f,mrb_int)
 #define FIXABLE(f) TYPED_FIXABLE(f,mrb_int)
 #ifndef MRB_WITHOUT_FLOAT
-#define FIXABLE_FLOAT(f) TYPED_FIXABLE(f,double)
+#ifdef MRB_INT64
+#define FIXABLE_FLOAT(f) ((f)>=-9223372036854775808.0 && (f)<9223372036854775808.0)
+#else
+#define FIXABLE_FLOAT(f) TYPED_FIXABLE(f,mrb_float)
+#endif
 #endif
 
 #ifndef MRB_WITHOUT_FLOAT
@@ -33,13 +37,14 @@ MRB_API mrb_value mrb_fixnum_to_str(mrb_state *mrb, mrb_value x, mrb_int base);
 /* ArgumentError if format string doesn't match /%(\.[0-9]+)?[aAeEfFgG]/ */
 #ifndef MRB_WITHOUT_FLOAT
 MRB_API mrb_value mrb_float_to_str(mrb_state *mrb, mrb_value x, const char *fmt);
+MRB_API int mrb_float_to_cstr(mrb_state *mrb, char *buf, size_t len, const char *fmt, mrb_float f);
 MRB_API mrb_float mrb_to_flo(mrb_state *mrb, mrb_value x);
+MRB_API mrb_value mrb_int_value(mrb_state *mrb, mrb_float f);
 #endif
 
-mrb_value mrb_fixnum_plus(mrb_state *mrb, mrb_value x, mrb_value y);
-mrb_value mrb_fixnum_minus(mrb_state *mrb, mrb_value x, mrb_value y);
-mrb_value mrb_fixnum_mul(mrb_state *mrb, mrb_value x, mrb_value y);
-mrb_value mrb_num_div(mrb_state *mrb, mrb_value x, mrb_value y);
+MRB_API mrb_value mrb_num_plus(mrb_state *mrb, mrb_value x, mrb_value y);
+MRB_API mrb_value mrb_num_minus(mrb_state *mrb, mrb_value x, mrb_value y);
+MRB_API mrb_value mrb_num_mul(mrb_state *mrb, mrb_value x, mrb_value y);
 
 #ifndef __has_builtin
   #define __has_builtin(x) 0
@@ -156,6 +161,36 @@ mrb_int_mul_overflow(mrb_int multiplier, mrb_int multiplicand, mrb_int *product)
 
 #endif
 
+#ifndef MRB_WITHOUT_FLOAT
+# include <stdint.h>
+# include <float.h>
+
+# define MRB_FLT_RADIX          FLT_RADIX
+
+# ifdef MRB_USE_FLOAT
+#  define MRB_FLT_MANT_DIG      FLT_MANT_DIG
+#  define MRB_FLT_EPSILON       FLT_EPSILON
+#  define MRB_FLT_DIG           FLT_DIG
+#  define MRB_FLT_MIN_EXP       FLT_MIN_EXP
+#  define MRB_FLT_MIN           FLT_MIN
+#  define MRB_FLT_MIN_10_EXP    FLT_MIN_10_EXP
+#  define MRB_FLT_MAX_EXP       FLT_MAX_EXP
+#  define MRB_FLT_MAX           FLT_MAX
+#  define MRB_FLT_MAX_10_EXP    FLT_MAX_10_EXP
+
+# else /* not MRB_USE_FLOAT */
+#  define MRB_FLT_MANT_DIG      DBL_MANT_DIG
+#  define MRB_FLT_EPSILON       DBL_EPSILON
+#  define MRB_FLT_DIG           DBL_DIG
+#  define MRB_FLT_MIN_EXP       DBL_MIN_EXP
+#  define MRB_FLT_MIN           DBL_MIN
+#  define MRB_FLT_MIN_10_EXP    DBL_MIN_10_EXP
+#  define MRB_FLT_MAX_EXP       DBL_MAX_EXP
+#  define MRB_FLT_MAX           DBL_MAX
+#  define MRB_FLT_MAX_10_EXP    DBL_MAX_10_EXP
+# endif /* MRB_USE_FLOAT */
+#endif /* MRB_WITHOUT_FLOAT */
+
 MRB_END_DECL
 
 #endif  /* MRUBY_NUMERIC_H */

include/mruby/object.h

@@ -1,5 +1,5 @@
-/*
-** mruby/object.h - mruby object definition
+/**
+** @file mruby/object.h - mruby object definition
 **
 ** See Copyright Notice in mruby.h
 */
@@ -8,15 +8,14 @@
 #define MRUBY_OBJECT_H
 
 #define MRB_OBJECT_HEADER \
-  enum mrb_vtype tt:8;\
-  uint32_t color:3;\
-  uint32_t flags:21;\
-  struct RClass *c;\
-  struct RBasic *gcnext
+  struct RClass *c;       \
+  struct RBasic *gcnext;  \
+  enum mrb_vtype tt:8;    \
+  uint32_t color:3;       \
+  uint32_t flags:21
 
 #define MRB_FLAG_TEST(obj, flag) ((obj)->flags & (flag))
 
-
 struct RBasic {
   MRB_OBJECT_HEADER;
 };
@@ -26,6 +25,7 @@ struct RBasic {
 #define MRB_FROZEN_P(o) ((o)->flags & MRB_FL_OBJ_IS_FROZEN)
 #define MRB_SET_FROZEN_FLAG(o) ((o)->flags |= MRB_FL_OBJ_IS_FROZEN)
 #define MRB_UNSET_FROZEN_FLAG(o) ((o)->flags &= ~MRB_FL_OBJ_IS_FROZEN)
+#define mrb_frozen_p(o) MRB_FROZEN_P(o)
 
 struct RObject {
   MRB_OBJECT_HEADER;
@@ -33,7 +33,6 @@ struct RObject {
 };
 #define mrb_obj_ptr(v)   ((struct RObject*)(mrb_ptr(v)))
 
-#define mrb_immediate_p(x) (mrb_type(x) < MRB_TT_HAS_BASIC)
 #define mrb_special_const_p(x) mrb_immediate_p(x)
 
 struct RFiber {

include/mruby/opcode.h

@@ -1,5 +1,5 @@
-/*
-** mruby/opcode.h - RiteVM operation codes
+/**
+** @file mruby/opcode.h - RiteVM operation codes
 **
 ** See Copyright Notice in mruby.h
 */

include/mruby/ops.h

@@ -45,9 +45,9 @@ OPCODE(SETMCNST,   BB)       /* R(a+1)::Syms(b) = R(a) */
 OPCODE(GETUPVAR,   BBB)      /* R(a) = uvget(b,c) */
 OPCODE(SETUPVAR,   BBB)      /* uvset(b,c,R(a)) */
 OPCODE(JMP,        S)        /* pc=a */
-OPCODE(JMPIF,      BS)       /* if R(b) pc=a */
-OPCODE(JMPNOT,     BS)       /* if !R(b) pc=a */
-OPCODE(JMPNIL,     BS)       /* if R(b)==nil pc=a */
+OPCODE(JMPIF,      BS)       /* if R(a) pc=b */
+OPCODE(JMPNOT,     BS)       /* if !R(a) pc=b */
+OPCODE(JMPNIL,     BS)       /* if R(a)==nil pc=b */
 OPCODE(ONERR,      S)        /* rescue_push(a) */
 OPCODE(EXCEPT,     B)        /* R(a) = exc */
 OPCODE(RESCUE,     BB)       /* R(b) = R(a).isa?(R(b)) */
@@ -58,7 +58,7 @@ OPCODE(EPOP,       B)        /* A.times{ensure_pop().call} */
 OPCODE(SENDV,      BB)       /* R(a) = call(R(a),Syms(b),*R(a+1)) */
 OPCODE(SENDVB,     BB)       /* R(a) = call(R(a),Syms(b),*R(a+1),&R(a+2)) */
 OPCODE(SEND,       BBB)      /* R(a) = call(R(a),Syms(b),R(a+1),...,R(a+c)) */
-OPCODE(SENDB,      BBB)      /* R(a) = call(R(a),Syms(Bx),R(a+1),...,R(a+c),&R(a+c+1)) */
+OPCODE(SENDB,      BBB)      /* R(a) = call(R(a),Syms(b),R(a+1),...,R(a+c),&R(a+c+1)) */
 OPCODE(CALL,       Z)        /* R(0) = self.call(frame.argc, frame.argv) */
 OPCODE(SUPER,      BB)       /* R(a) = super(R(a+1),... ,R(a+b+1)) */
 OPCODE(ARGARY,     BS)       /* R(a) = argument array (16=m5:r1:m5:d1:lv4) */
@@ -71,9 +71,9 @@ OPCODE(RETURN_BLK, B)        /* return R(a) (in-block return) */
 OPCODE(BREAK,      B)        /* break R(a) */
 OPCODE(BLKPUSH,    BS)       /* R(a) = block (16=m5:r1:m5:d1:lv4) */
 OPCODE(ADD,        B)        /* R(a) = R(a)+R(a+1) */
-OPCODE(ADDI,       BB)       /* R(a) = R(a)+mrb_int(c)  */
+OPCODE(ADDI,       BB)       /* R(a) = R(a)+mrb_int(b) */
 OPCODE(SUB,        B)        /* R(a) = R(a)-R(a+1) */
-OPCODE(SUBI,       BB)       /* R(a) = R(a)-C */
+OPCODE(SUBI,       BB)       /* R(a) = R(a)-mrb_int(b) */
 OPCODE(MUL,        B)        /* R(a) = R(a)*R(a+1) */
 OPCODE(DIV,        B)        /* R(a) = R(a)/R(a+1) */
 OPCODE(EQ,         B)        /* R(a) = R(a)==R(a+1) */
@@ -92,8 +92,8 @@ OPCODE(APOST,      BBB)      /* *R(a),R(a+1)..R(a+c) = R(a)[b..] */
 OPCODE(INTERN,     B)        /* R(a) = intern(R(a)) */
 OPCODE(STRING,     BB)       /* R(a) = str_dup(Lit(b)) */
 OPCODE(STRCAT,     B)        /* str_cat(R(a),R(a+1)) */
-OPCODE(HASH,       BB)       /* R(a) = hash_new(R(a),R(a+1)..R(a+b)) */
-OPCODE(HASHADD,    BB)       /* R(a) = hash_push(R(a),R(a+1)..R(a+b)) */
+OPCODE(HASH,       BB)       /* R(a) = hash_new(R(a),R(a+1)..R(a+b*2-1)) */
+OPCODE(HASHADD,    BB)       /* R(a) = hash_push(R(a),R(a+1)..R(a+b*2)) */
 OPCODE(HASHCAT,    B)        /* R(a) = hash_cat(R(a),R(a+1)) */
 OPCODE(LAMBDA,     BB)       /* R(a) = lambda(SEQ[b],L_LAMBDA) */
 OPCODE(BLOCK,      BB)       /* R(a) = lambda(SEQ[b],L_BLOCK) */
@@ -115,3 +115,4 @@ OPCODE(EXT1,       Z)        /* make 1st operand 16bit */
 OPCODE(EXT2,       Z)        /* make 2nd operand 16bit */
 OPCODE(EXT3,       Z)        /* make 1st and 2nd operands 16bit */
 OPCODE(STOP,       Z)        /* stop VM */
+OPCODE(LOADI16,    BS)       /* R(a) = mrb_int(b) */

include/mruby/proc.h

@@ -1,5 +1,5 @@
-/*
-** mruby/proc.h - Proc class
+/**
+** @file mruby/proc.h - Proc class
 **
 ** See Copyright Notice in mruby.h
 */
@@ -22,14 +22,19 @@ struct REnv {
   mrb_sym mid;
 };
 
-/* flags (21bits): 1(shared flag):10(cioff/bidx):10(stack_len) */
-#define MRB_ENV_SET_STACK_LEN(e,len) ((e)->flags = (((e)->flags & ~0x3ff)|((unsigned int)(len) & 0x3ff)))
-#define MRB_ENV_STACK_LEN(e) ((mrb_int)((e)->flags & 0x3ff))
-#define MRB_ENV_STACK_UNSHARED (1<<20)
-#define MRB_ENV_UNSHARE_STACK(e) ((e)->flags |= MRB_ENV_STACK_UNSHARED)
-#define MRB_ENV_STACK_SHARED_P(e) (((e)->flags & MRB_ENV_STACK_UNSHARED) == 0)
-#define MRB_ENV_BIDX(e) (((e)->flags >> 10) & 0x3ff)
-#define MRB_ENV_SET_BIDX(e,idx) ((e)->flags = (((e)->flags & ~(0x3ff<<10))|((unsigned int)(idx) & 0x3ff)<<10))
+/* flags (21bits): 1(close):1(touched):1(heap):8(cioff/bidx):8(stack_len) */
+#define MRB_ENV_SET_LEN(e,len) ((e)->flags = (((e)->flags & ~0xff)|((unsigned int)(len) & 0xff)))
+#define MRB_ENV_LEN(e) ((mrb_int)((e)->flags & 0xff))
+#define MRB_ENV_CLOSED (1<<20)
+#define MRB_ENV_TOUCHED (1<<19)
+#define MRB_ENV_HEAPED (1<<18)
+#define MRB_ENV_CLOSE(e) ((e)->flags |= MRB_ENV_CLOSED)
+#define MRB_ENV_TOUCH(e) ((e)->flags |= MRB_ENV_TOUCHED)
+#define MRB_ENV_HEAP(e) ((e)->flags |= MRB_ENV_HEAPED)
+#define MRB_ENV_HEAP_P(e) ((e)->flags & MRB_ENV_HEAPED)
+#define MRB_ENV_ONSTACK_P(e) (((e)->flags & MRB_ENV_CLOSED) == 0)
+#define MRB_ENV_BIDX(e) (((e)->flags >> 8) & 0xff)
+#define MRB_ENV_SET_BIDX(e,idx) ((e)->flags = (((e)->flags & ~(0xff<<8))|((unsigned int)(idx) & 0xff)<<10))
 
 void mrb_env_unshare(mrb_state*, struct REnv*);
 
@@ -86,38 +91,44 @@ struct RProc *mrb_closure_new(mrb_state*, mrb_irep*);
 MRB_API struct RProc *mrb_proc_new_cfunc(mrb_state*, mrb_func_t);
 MRB_API struct RProc *mrb_closure_new_cfunc(mrb_state *mrb, mrb_func_t func, int nlocals);
 void mrb_proc_copy(struct RProc *a, struct RProc *b);
+mrb_int mrb_proc_arity(const struct RProc *p);
 
 /* implementation of #send method */
 mrb_value mrb_f_send(mrb_state *mrb, mrb_value self);
 
 /* following functions are defined in mruby-proc-ext so please include it when using */
-MRB_API struct RProc *mrb_proc_new_cfunc_with_env(mrb_state*, mrb_func_t, mrb_int, const mrb_value*);
-MRB_API mrb_value mrb_proc_cfunc_env_get(mrb_state*, mrb_int);
+MRB_API struct RProc *mrb_proc_new_cfunc_with_env(mrb_state *mrb, mrb_func_t func, mrb_int argc, const mrb_value *argv);
+MRB_API mrb_value mrb_proc_cfunc_env_get(mrb_state *mrb, mrb_int idx);
 /* old name */
 #define mrb_cfunc_env_get(mrb, idx) mrb_proc_cfunc_env_get(mrb, idx)
 
-#ifdef MRB_METHOD_TABLE_INLINE
+#define MRB_METHOD_FUNC_FL 1
+#define MRB_METHOD_NOARG_FL 2
+#ifndef MRB_METHOD_T_STRUCT
 
-#define MRB_METHOD_FUNC_FL ((uintptr_t)1)
 #define MRB_METHOD_FUNC_P(m) (((uintptr_t)(m))&MRB_METHOD_FUNC_FL)
-#define MRB_METHOD_FUNC(m) ((mrb_func_t)((uintptr_t)(m)&(~MRB_METHOD_FUNC_FL)))
-#define MRB_METHOD_FROM_FUNC(m,fn) ((m)=(mrb_method_t)((struct RProc*)((uintptr_t)(fn)|MRB_METHOD_FUNC_FL)))
-#define MRB_METHOD_FROM_PROC(m,pr) ((m)=(mrb_method_t)(struct RProc*)(pr))
+#define MRB_METHOD_NOARG_P(m) (((uintptr_t)(m))&MRB_METHOD_NOARG_FL)
+#define MRB_METHOD_NOARG_SET(m) ((m)=(mrb_method_t)(((uintptr_t)(m))|MRB_METHOD_NOARG_FL))
+#define MRB_METHOD_FUNC(m) ((mrb_func_t)((uintptr_t)(m)>>2))
+#define MRB_METHOD_FROM_FUNC(m,fn) ((m)=(mrb_method_t)((((uintptr_t)(fn))<<2)|MRB_METHOD_FUNC_FL))
+#define MRB_METHOD_FROM_PROC(m,pr) ((m)=(mrb_method_t)(pr))
 #define MRB_METHOD_PROC_P(m) (!MRB_METHOD_FUNC_P(m))
 #define MRB_METHOD_PROC(m) ((struct RProc*)(m))
 #define MRB_METHOD_UNDEF_P(m) ((m)==0)
 
 #else
 
-#define MRB_METHOD_FUNC_P(m) ((m).func_p)
+#define MRB_METHOD_FUNC_P(m) ((m).flags&MRB_METHOD_FUNC_FL)
+#define MRB_METHOD_NOARG_P(m) ((m).flags&MRB_METHOD_NOARG_FL)
 #define MRB_METHOD_FUNC(m) ((m).func)
-#define MRB_METHOD_FROM_FUNC(m,fn) do{(m).func_p=TRUE;(m).func=(fn);}while(0)
-#define MRB_METHOD_FROM_PROC(m,pr) do{(m).func_p=FALSE;(m).proc=(pr);}while(0)
+#define MRB_METHOD_NOARG_SET(m) do{(m).flags|=MRB_METHOD_NOARG_FL;}while(0)
+#define MRB_METHOD_FROM_FUNC(m,fn) do{(m).flags=MRB_METHOD_FUNC_FL;(m).func=(fn);}while(0)
+#define MRB_METHOD_FROM_PROC(m,pr) do{(m).flags=0;(m).proc=(pr);}while(0)
 #define MRB_METHOD_PROC_P(m) (!MRB_METHOD_FUNC_P(m))
 #define MRB_METHOD_PROC(m) ((m).proc)
 #define MRB_METHOD_UNDEF_P(m) ((m).proc==NULL)
 
-#endif /* MRB_METHOD_TABLE_INLINE */
+#endif /* MRB_METHOD_T_STRUCT */
 
 #define MRB_METHOD_CFUNC_P(m) (MRB_METHOD_FUNC_P(m)?TRUE:(MRB_METHOD_PROC(m)?(MRB_PROC_CFUNC_P(MRB_METHOD_PROC(m))):FALSE))
 #define MRB_METHOD_CFUNC(m) (MRB_METHOD_FUNC_P(m)?MRB_METHOD_FUNC(m):((MRB_METHOD_PROC(m)&&MRB_PROC_CFUNC_P(MRB_METHOD_PROC(m)))?MRB_PROC_CFUNC(MRB_METHOD_PROC(m)):NULL))

include/mruby/range.h

@@ -1,5 +1,5 @@
-/*
-** mruby/range.h - Range class
+/**
+** @file mruby/range.h - Range class
 **
 ** See Copyright Notice in mruby.h
 */
@@ -14,7 +14,7 @@
  */
 MRB_BEGIN_DECL
 
-#if defined(MRB_NAN_BOXING) || defined(MRB_WORD_BOXING)
+#if defined(MRB_NAN_BOXING) && defined(MRB_64BIT) || defined(MRB_WORD_BOXING)
 # define MRB_RANGE_EMBED
 #endif
 
@@ -64,7 +64,13 @@ MRB_API struct RRange* mrb_range_ptr(mrb_state *mrb, mrb_value range);
  */
 MRB_API mrb_value mrb_range_new(mrb_state *mrb, mrb_value start, mrb_value end, mrb_bool exclude);
 
-MRB_API mrb_int mrb_range_beg_len(mrb_state *mrb, mrb_value range, mrb_int *begp, mrb_int *lenp, mrb_int len, mrb_bool trunc);
+enum mrb_range_beg_len {
+  MRB_RANGE_TYPE_MISMATCH = 0,  /* (failure) not range */
+  MRB_RANGE_OK = 1,             /* (success) range */
+  MRB_RANGE_OUT = 2             /* (failure) out of range */
+};
+
+MRB_API enum mrb_range_beg_len mrb_range_beg_len(mrb_state *mrb, mrb_value range, mrb_int *begp, mrb_int *lenp, mrb_int len, mrb_bool trunc);
 mrb_value mrb_get_values_at(mrb_state *mrb, mrb_value obj, mrb_int olen, mrb_int argc, const mrb_value *argv, mrb_value (*func)(mrb_state*, mrb_value, mrb_int));
 void mrb_gc_mark_range(mrb_state *mrb, struct RRange *r);
 

include/mruby/re.h

@@ -1,5 +1,5 @@
-/*
-** mruby/re.h - Regexp class
+/**
+** @file mruby/re.h - Regexp class
 **
 ** See Copyright Notice in mruby.h
 */

include/mruby/string.h

@@ -1,5 +1,5 @@
-/*
-** mruby/string.h - String class
+/**
+** @file mruby/string.h - String class
 **
 ** See Copyright Notice in mruby.h
 */
@@ -16,23 +16,30 @@ MRB_BEGIN_DECL
 
 extern const char mrb_digitmap[];
 
-#define RSTRING_EMBED_LEN_MAX ((mrb_int)(sizeof(void*) * 3 - 1))
+#define RSTRING_EMBED_LEN_MAX \
+  ((mrb_int)(sizeof(void*) * 3 + sizeof(void*) - 32 / CHAR_BIT - 1))
 
 struct RString {
   MRB_OBJECT_HEADER;
   union {
     struct {
-      mrb_int len;
+      mrb_ssize len;
       union {
-        mrb_int capa;
+        mrb_ssize capa;
         struct mrb_shared_string *shared;
         struct RString *fshared;
       } aux;
       char *ptr;
     } heap;
-    char ary[RSTRING_EMBED_LEN_MAX + 1];
   } as;
 };
+struct RStringEmbed {
+  MRB_OBJECT_HEADER;
+  char ary[];
+};
+
+#define RSTR_SET_TYPE_FLAG(s, type) (RSTR_UNSET_TYPE_FLAG(s), (s)->flags |= MRB_STR_##type)
+#define RSTR_UNSET_TYPE_FLAG(s) ((s)->flags &= ~(MRB_STR_TYPE_MASK|MRB_STR_EMBED_LEN_MASK))
 
 #define RSTR_EMBED_P(s) ((s)->flags & MRB_STR_EMBED)
 #define RSTR_SET_EMBED_FLAG(s) ((s)->flags |= MRB_STR_EMBED)
@@ -47,12 +54,15 @@ struct RString {
     RSTR_SET_EMBED_LEN((s),(n));\
   }\
   else {\
-    (s)->as.heap.len = (mrb_int)(n);\
+    (s)->as.heap.len = (mrb_ssize)(n);\
   }\
 } while (0)
+#define RSTR_EMBED_PTR(s) (((struct RStringEmbed*)(s))->ary)
 #define RSTR_EMBED_LEN(s)\
   (mrb_int)(((s)->flags & MRB_STR_EMBED_LEN_MASK) >> MRB_STR_EMBED_LEN_SHIFT)
-#define RSTR_PTR(s) ((RSTR_EMBED_P(s)) ? (s)->as.ary : (s)->as.heap.ptr)
+#define RSTR_EMBEDDABLE_P(len) ((len) <= RSTRING_EMBED_LEN_MAX)
+
+#define RSTR_PTR(s) ((RSTR_EMBED_P(s)) ? RSTR_EMBED_PTR(s) : (s)->as.heap.ptr)
 #define RSTR_LEN(s) ((RSTR_EMBED_P(s)) ? RSTR_EMBED_LEN(s) : (s)->as.heap.len)
 #define RSTR_CAPA(s) (RSTR_EMBED_P(s) ? RSTRING_EMBED_LEN_MAX : (s)->as.heap.aux.capa)
 
@@ -68,10 +78,24 @@ struct RString {
 #define RSTR_SET_NOFREE_FLAG(s) ((s)->flags |= MRB_STR_NOFREE)
 #define RSTR_UNSET_NOFREE_FLAG(s) ((s)->flags &= ~MRB_STR_NOFREE)
 
+#ifdef MRB_UTF8_STRING
+# define RSTR_ASCII_P(s) ((s)->flags & MRB_STR_ASCII)
+# define RSTR_SET_ASCII_FLAG(s) ((s)->flags |= MRB_STR_ASCII)
+# define RSTR_UNSET_ASCII_FLAG(s) ((s)->flags &= ~MRB_STR_ASCII)
+# define RSTR_WRITE_ASCII_FLAG(s, v) (RSTR_UNSET_ASCII_FLAG(s), (s)->flags |= v)
+# define RSTR_COPY_ASCII_FLAG(dst, src) RSTR_WRITE_ASCII_FLAG(dst, RSTR_ASCII_P(src))
+#else
+# define RSTR_ASCII_P(s) (void)0
+# define RSTR_SET_ASCII_FLAG(s) (void)0
+# define RSTR_UNSET_ASCII_FLAG(s) (void)0
+# define RSTR_WRITE_ASCII_FLAG(s, v) (void)0
+# define RSTR_COPY_ASCII_FLAG(dst, src) (void)0
+#endif
+
 #define RSTR_POOL_P(s) ((s)->flags & MRB_STR_POOL)
 #define RSTR_SET_POOL_FLAG(s) ((s)->flags |= MRB_STR_POOL)
 
-/*
+/**
  * Returns a pointer from a Ruby string
  */
 #define mrb_str_ptr(s)       ((struct RString*)(mrb_ptr(s)))
@@ -82,32 +106,38 @@ struct RString {
 #define RSTRING_CAPA(s)      RSTR_CAPA(RSTRING(s))
 #define RSTRING_END(s)       (RSTRING_PTR(s) + RSTRING_LEN(s))
 MRB_API mrb_int mrb_str_strlen(mrb_state*, struct RString*);
+#define RSTRING_CSTR(mrb,s)  mrb_string_cstr(mrb, s)
 
 #define MRB_STR_SHARED    1
 #define MRB_STR_FSHARED   2
 #define MRB_STR_NOFREE    4
-#define MRB_STR_POOL      8
-#define MRB_STR_NO_UTF   16
-#define MRB_STR_EMBED    32
-#define MRB_STR_EMBED_LEN_MASK 0x7c0
+#define MRB_STR_EMBED     8  /* type flags up to here */
+#define MRB_STR_POOL     16  /* status flags from here */
+#define MRB_STR_ASCII    32
 #define MRB_STR_EMBED_LEN_SHIFT 6
+#define MRB_STR_EMBED_LEN_BIT 5
+#define MRB_STR_EMBED_LEN_MASK (((1 << MRB_STR_EMBED_LEN_BIT) - 1) << MRB_STR_EMBED_LEN_SHIFT)
+#define MRB_STR_TYPE_MASK (MRB_STR_POOL - 1)
+
 
 void mrb_gc_free_str(mrb_state*, struct RString*);
-MRB_API void mrb_str_modify(mrb_state*, struct RString*);
 
-/*
+MRB_API void mrb_str_modify(mrb_state *mrb, struct RString *s);
+/* mrb_str_modify() with keeping ASCII flag if set */
+MRB_API void mrb_str_modify_keep_ascii(mrb_state *mrb, struct RString *s);
+
+/**
  * Finds the index of a substring in a string
  */
-MRB_API mrb_int mrb_str_index(mrb_state*, mrb_value, const char*, mrb_int, mrb_int);
+MRB_API mrb_int mrb_str_index(mrb_state *mrb, mrb_value str, const char *p, mrb_int len, mrb_int offset);
 #define mrb_str_index_lit(mrb, str, lit, off) mrb_str_index(mrb, str, lit, mrb_strlen_lit(lit), off);
 
-/*
+/**
  * Appends self to other. Returns self as a concatenated string.
  *
  *
- *  Example:
+ * Example:
  *
- *     !!!c
  *     int
  *     main(int argc,
  *          char **argv)
@@ -129,32 +159,30 @@ MRB_API mrb_int mrb_str_index(mrb_state*, mrb_value, const char*, mrb_int, mrb_i
  *       // Concatenates str2 to str1.
  *       mrb_str_concat(mrb, str1, str2);
  *
- *      // Prints new Concatenated Ruby string.
- *      mrb_p(mrb, str1);
+ *       // Prints new Concatenated Ruby string.
+ *       mrb_p(mrb, str1);
  *
- *      mrb_close(mrb);
- *      return 0;
- *    }
+ *       mrb_close(mrb);
+ *       return 0;
+ *     } 
  *
- *
- *  Result:
+ * Result:
  *
  *     => "abcdef"
  *
- * @param [mrb_state] mrb The current mruby state.
- * @param [mrb_value] self String to concatenate.
- * @param [mrb_value] other String to append to self.
+ * @param mrb The current mruby state.
+ * @param self String to concatenate.
+ * @param other String to append to self.
  * @return [mrb_value] Returns a new String appending other to self.
  */
-MRB_API void mrb_str_concat(mrb_state*, mrb_value, mrb_value);
+MRB_API void mrb_str_concat(mrb_state *mrb, mrb_value self, mrb_value other);
 
-/*
+/**
  * Adds two strings together.
  *
  *
- *  Example:
+ * Example:
  *
- *     !!!c
  *     int
  *     main(int argc,
  *          char **argv)
@@ -181,52 +209,51 @@ MRB_API void mrb_str_concat(mrb_state*, mrb_value, mrb_value);
  *       // Concatenates both Ruby strings.
  *       c = mrb_str_plus(mrb, a, b);
  *
- *      // Prints new Concatenated Ruby string.
- *      mrb_p(mrb, c);
+ *       // Prints new Concatenated Ruby string.
+ *       mrb_p(mrb, c);
  *
- *      mrb_close(mrb);
- *      return 0;
- *    }
+ *       mrb_close(mrb);
+ *       return 0;
+ *     }
  *
  *
- *  Result:
+ * Result:
  *
  *     => "abc"  # First string
  *     => "def"  # Second string
  *     => "abcdef" # First & Second concatenated.
  *
- * @param [mrb_state] mrb The current mruby state.
- * @param [mrb_value] a First string to concatenate.
- * @param [mrb_value] b Second string to concatenate.
+ * @param mrb The current mruby state.
+ * @param a First string to concatenate.
+ * @param b Second string to concatenate.
  * @return [mrb_value] Returns a new String containing a concatenated to b.
  */
-MRB_API mrb_value mrb_str_plus(mrb_state*, mrb_value, mrb_value);
+MRB_API mrb_value mrb_str_plus(mrb_state *mrb, mrb_value a, mrb_value b);
 
-/*
+/**
  * Converts pointer into a Ruby string.
  *
- * @param [mrb_state] mrb The current mruby state.
- * @param [void*] p The pointer to convert to Ruby string.
+ * @param mrb The current mruby state.
+ * @param p The pointer to convert to Ruby string.
  * @return [mrb_value] Returns a new Ruby String.
  */
-MRB_API mrb_value mrb_ptr_to_str(mrb_state *, void*);
+MRB_API mrb_value mrb_ptr_to_str(mrb_state *mrb, void *p);
 
-/*
+/**
  * Returns an object as a Ruby string.
  *
- * @param [mrb_state] mrb The current mruby state.
- * @param [mrb_value] obj An object to return as a Ruby string.
+ * @param mrb The current mruby state.
+ * @param obj An object to return as a Ruby string.
  * @return [mrb_value] An object as a Ruby string.
  */
 MRB_API mrb_value mrb_obj_as_string(mrb_state *mrb, mrb_value obj);
 
-/*
+/**
  * Resizes the string's length. Returns the amount of characters
  * in the specified by len.
  *
  * Example:
  *
- *     !!!c
  *     int
  *     main(int argc,
  *          char **argv)
@@ -251,21 +278,20 @@ MRB_API mrb_value mrb_obj_as_string(mrb_state *mrb, mrb_value obj);
  *
  * Result:
  *
- *     => "Hello"
+ *      => "Hello"
  *
- * @param [mrb_state] mrb The current mruby state.
- * @param [mrb_value] str The Ruby string to resize.
- * @param [mrb_value] len The length.
+ * @param mrb The current mruby state.
+ * @param str The Ruby string to resize.
+ * @param len The length.
  * @return [mrb_value] An object as a Ruby string.
  */
 MRB_API mrb_value mrb_str_resize(mrb_state *mrb, mrb_value str, mrb_int len);
 
-/*
+/**
  * Returns a sub string.
  *
- *  Example:
+ * Example:
  *
- *     !!!c
  *     int
  *     main(int argc,
  *     char const **argv)
@@ -291,24 +317,24 @@ MRB_API mrb_value mrb_str_resize(mrb_state *mrb, mrb_value str, mrb_int len);
  *       return 0;
  *     }
  *
- *  Result:
+ * Result:
  *
  *     => "He"
  *
- * @param [mrb_state] mrb The current mruby state.
- * @param [mrb_value] str Ruby string.
- * @param [mrb_int] beg The beginning point of the sub-string.
- * @param [mrb_int] len The end point of the sub-string.
+ * @param mrb The current mruby state.
+ * @param str Ruby string.
+ * @param beg The beginning point of the sub-string.
+ * @param len The end point of the sub-string.
  * @return [mrb_value] An object as a Ruby sub-string.
  */
 MRB_API mrb_value mrb_str_substr(mrb_state *mrb, mrb_value str, mrb_int beg, mrb_int len);
 
-/*
+/**
  * Returns a Ruby string type.
  *
  *
- * @param [mrb_state] mrb The current mruby state.
- * @param [mrb_value] str Ruby string.
+ * @param mrb The current mruby state.
+ * @param str Ruby string.
  * @return [mrb_value] A Ruby string.
  */
 MRB_API mrb_value mrb_ensure_string_type(mrb_state *mrb, mrb_value str);
@@ -320,33 +346,30 @@ MRB_API mrb_value mrb_string_type(mrb_state *mrb, mrb_value str);
 MRB_API mrb_value mrb_str_new_capa(mrb_state *mrb, size_t capa);
 MRB_API mrb_value mrb_str_buf_new(mrb_state *mrb, size_t capa);
 
-MRB_API const char *mrb_string_value_cstr(mrb_state *mrb, mrb_value *ptr);
+/* NULL terminated C string from mrb_value */
+MRB_API const char *mrb_string_cstr(mrb_state *mrb, mrb_value str);
+/* NULL terminated C string from mrb_value; `str` will be updated */
+MRB_API const char *mrb_string_value_cstr(mrb_state *mrb, mrb_value *str);
+/* obslete: use RSTRING_PTR() */
 MRB_API const char *mrb_string_value_ptr(mrb_state *mrb, mrb_value str);
-/*
- * Returns the length of the Ruby string.
- *
- *
- * @param [mrb_state] mrb The current mruby state.
- * @param [mrb_value] str Ruby string.
- * @return [mrb_int] The length of the passed in Ruby string.
- */
+/* obslete: use RSTRING_LEN() */
 MRB_API mrb_int mrb_string_value_len(mrb_state *mrb, mrb_value str);
 
-/*
+/**
  * Duplicates a string object.
  *
  *
- * @param [mrb_state] mrb The current mruby state.
- * @param [mrb_value] str Ruby string.
+ * @param mrb The current mruby state.
+ * @param str Ruby string.
  * @return [mrb_value] Duplicated Ruby string.
  */
 MRB_API mrb_value mrb_str_dup(mrb_state *mrb, mrb_value str);
 
-/*
+/**
  * Returns a symbol from a passed in Ruby string.
  *
- * @param [mrb_state] mrb The current mruby state.
- * @param [mrb_value] self Ruby string.
+ * @param mrb The current mruby state.
+ * @param self Ruby string.
  * @return [mrb_value] A symbol.
  */
 MRB_API mrb_value mrb_str_intern(mrb_state *mrb, mrb_value self);
@@ -356,40 +379,40 @@ MRB_API mrb_value mrb_cstr_to_inum(mrb_state *mrb, const char *s, mrb_int base,
 MRB_API double mrb_str_to_dbl(mrb_state *mrb, mrb_value str, mrb_bool badcheck);
 MRB_API double mrb_cstr_to_dbl(mrb_state *mrb, const char *s, mrb_bool badcheck);
 
-/*
+/**
  * Returns a converted string type.
  * For type checking, non converting `mrb_to_str` is recommended.
  */
 MRB_API mrb_value mrb_str_to_str(mrb_state *mrb, mrb_value str);
 
-/*
+/**
  * Returns true if the strings match and false if the strings don't match.
  *
- * @param [mrb_state] mrb The current mruby state.
- * @param [mrb_value] str1 Ruby string to compare.
- * @param [mrb_value] str2 Ruby string to compare.
+ * @param mrb The current mruby state.
+ * @param str1 Ruby string to compare.
+ * @param str2 Ruby string to compare.
  * @return [mrb_value] boolean value.
  */
 MRB_API mrb_bool mrb_str_equal(mrb_state *mrb, mrb_value str1, mrb_value str2);
 
-/*
- * Returns a concated string comprised of a Ruby string and a C string.
+/**
+ * Returns a concatenated string comprised of a Ruby string and a C string.
  *
- * @param [mrb_state] mrb The current mruby state.
- * @param [mrb_value] str Ruby string.
- * @param [const char *] ptr A C string.
- * @param [size_t] len length of C string.
+ * @param mrb The current mruby state.
+ * @param str Ruby string.
+ * @param ptr A C string.
+ * @param len length of C string.
  * @return [mrb_value] A Ruby string.
  * @see mrb_str_cat_cstr
  */
 MRB_API mrb_value mrb_str_cat(mrb_state *mrb, mrb_value str, const char *ptr, size_t len);
 
-/*
- * Returns a concated string comprised of a Ruby string and a C string.
+/**
+ * Returns a concatenated string comprised of a Ruby string and a C string.
  *
- * @param [mrb_state] mrb The current mruby state.
- * @param [mrb_value] str Ruby string.
- * @param [const char *] ptr A C string.
+ * @param mrb The current mruby state.
+ * @param str Ruby string.
+ * @param ptr A C string.
  * @return [mrb_value] A Ruby string.
  * @see mrb_str_cat
  */
@@ -397,17 +420,17 @@ MRB_API mrb_value mrb_str_cat_cstr(mrb_state *mrb, mrb_value str, const char *pt
 MRB_API mrb_value mrb_str_cat_str(mrb_state *mrb, mrb_value str, mrb_value str2);
 #define mrb_str_cat_lit(mrb, str, lit) mrb_str_cat(mrb, str, lit, mrb_strlen_lit(lit))
 
-/*
+/**
  * Adds str2 to the end of str1.
  */
 MRB_API mrb_value mrb_str_append(mrb_state *mrb, mrb_value str, mrb_value str2);
 
-/*
+/**
  * Returns 0 if both Ruby strings are equal. Returns a value < 0 if Ruby str1 is less than Ruby str2. Returns a value > 0 if Ruby str2 is greater than Ruby str1.
  */
 MRB_API int mrb_str_cmp(mrb_state *mrb, mrb_value str1, mrb_value str2);
 
-/*
+/**
  * Returns a newly allocated C string from a Ruby string.
  * This is an utility function to pass a Ruby string to C library functions.
  *
@@ -418,31 +441,32 @@ MRB_API int mrb_str_cmp(mrb_state *mrb, mrb_value str1, mrb_value str2);
  * - Caller can modify returned string without affecting Ruby string
  *   (e.g. it can be used for mkstemp(3)).
  *
- * @param [mrb_state *] mrb The current mruby state.
- * @param [mrb_value] str Ruby string. Must be an instance of String.
+ * @param mrb The current mruby state.
+ * @param str Ruby string. Must be an instance of String.
  * @return [char *] A newly allocated C string.
  */
 MRB_API char *mrb_str_to_cstr(mrb_state *mrb, mrb_value str);
 
-mrb_value mrb_str_pool(mrb_state *mrb, mrb_value str);
+mrb_value mrb_str_pool(mrb_state *mrb, const char *s, mrb_int len, mrb_bool nofree);
 uint32_t mrb_str_hash(mrb_state *mrb, mrb_value str);
 mrb_value mrb_str_dump(mrb_state *mrb, mrb_value str);
 
-/*
+/**
  * Returns a printable version of str, surrounded by quote marks, with special characters escaped.
  */
 mrb_value mrb_str_inspect(mrb_state *mrb, mrb_value str);
 
-void mrb_noregexp(mrb_state *mrb, mrb_value self);
-void mrb_regexp_check(mrb_state *mrb, mrb_value obj);
-
 /* For backward compatibility */
 #define mrb_str_cat2(mrb, str, ptr) mrb_str_cat_cstr(mrb, str, ptr)
 #define mrb_str_buf_cat(mrb, str, ptr, len) mrb_str_cat(mrb, str, ptr, len)
 #define mrb_str_buf_append(mrb, str, str2) mrb_str_cat_str(mrb, str, str2)
 
+mrb_bool mrb_str_beg_len(mrb_int str_len, mrb_int *begp, mrb_int *lenp);
+mrb_value mrb_str_byte_subseq(mrb_state *mrb, mrb_value str, mrb_int beg, mrb_int len);
+
 #ifdef MRB_UTF8_STRING
-mrb_int mrb_utf8_len(const char *str, mrb_int byte_len);
+mrb_int mrb_utf8len(const char *str, const char *end);
+mrb_int mrb_utf8_strlen(const char *str, mrb_int byte_len);
 #endif
 
 MRB_END_DECL

include/mruby/throw.h

@@ -1,5 +1,5 @@
-/*
-** mruby/throw.h - mruby exception throwing handler
+/**
+** @file mruby/throw.h - mruby exception throwing handler
 **
 ** See Copyright Notice in mruby.h
 */

include/mruby/value.h

@@ -1,5 +1,5 @@
-/*
-** mruby/value.h - mruby value definitions
+/**
+** @file mruby/value.h - mruby value definitions
 **
 ** See Copyright Notice in mruby.h
 */
@@ -9,28 +9,43 @@
 
 #include "common.h"
 
-/**
+/*
  * MRuby Value definition functions and macros.
  */
 MRB_BEGIN_DECL
 
+/**
+ * mruby Symbol.
+ * @class mrb_sym
+ *
+ * You can create an mrb_sym by simply using mrb_str_intern() or mrb_intern_cstr()
+ */
 typedef uint32_t mrb_sym;
+
+/**
+ * mruby Boolean.
+ * @class mrb_bool
+ *
+ *
+ * Used internally to represent boolean. Can be TRUE or FALSE.
+ * Not to be confused with Ruby's boolean classes, which can be
+ * obtained using mrb_false_value() and mrb_true_value()
+ */
 typedef uint8_t mrb_bool;
 struct mrb_state;
 
-#if defined(MRB_INT16) && defined(MRB_INT64)
-# error "You can't define MRB_INT16 and MRB_INT64 at the same time."
-#endif
-
 #if defined _MSC_VER && _MSC_VER < 1800
 # define PRIo64 "llo"
 # define PRId64 "lld"
+# define PRIu64 "llu"
 # define PRIx64 "llx"
 # define PRIo16 "ho"
 # define PRId16 "hd"
+# define PRIu16 "hu"
 # define PRIx16 "hx"
 # define PRIo32 "o"
 # define PRId32 "d"
+# define PRIu32 "u"
 # define PRIx32 "x"
 #else
 # include <inttypes.h>
@@ -44,14 +59,6 @@ struct mrb_state;
 # define MRB_PRIo PRIo64
 # define MRB_PRId PRId64
 # define MRB_PRIx PRIx64
-#elif defined(MRB_INT16)
-  typedef int16_t mrb_int;
-# define MRB_INT_BIT 16
-# define MRB_INT_MIN (INT16_MIN>>MRB_FIXNUM_SHIFT)
-# define MRB_INT_MAX (INT16_MAX>>MRB_FIXNUM_SHIFT)
-# define MRB_PRIo PRIo16
-# define MRB_PRId PRId16
-# define MRB_PRIx PRIx16
 #else
   typedef int32_t mrb_int;
 # define MRB_INT_BIT 32
@@ -62,6 +69,11 @@ struct mrb_state;
 # define MRB_PRIx PRIx32
 #endif
 
+#ifdef MRB_ENDIAN_BIG
+# define MRB_ENDIAN_LOHI(a,b) a b
+#else
+# define MRB_ENDIAN_LOHI(a,b) b a
+#endif
 
 #ifndef MRB_WITHOUT_FLOAT
 MRB_API double mrb_float_read(const char*, char**);
@@ -73,9 +85,6 @@ MRB_API double mrb_float_read(const char*, char**);
 #endif
 
 #if defined _MSC_VER && _MSC_VER < 1900
-# ifndef __cplusplus
-#  define inline __inline
-# endif
 # include <stdarg.h>
 MRB_API int mrb_msvc_vsnprintf(char *s, size_t n, const char *format, va_list arg);
 MRB_API int mrb_msvc_snprintf(char *s, size_t n, const char *format, ...);
@@ -94,32 +103,31 @@ static const unsigned int IEEE754_INFINITY_BITS_SINGLE = 0x7F800000;
 #endif
 
 enum mrb_vtype {
-  MRB_TT_FALSE = 0,   /*   0 */
-  MRB_TT_FREE,        /*   1 */
-  MRB_TT_TRUE,        /*   2 */
-  MRB_TT_FIXNUM,      /*   3 */
-  MRB_TT_SYMBOL,      /*   4 */
-  MRB_TT_UNDEF,       /*   5 */
-  MRB_TT_FLOAT,       /*   6 */
-  MRB_TT_CPTR,        /*   7 */
-  MRB_TT_OBJECT,      /*   8 */
-  MRB_TT_CLASS,       /*   9 */
-  MRB_TT_MODULE,      /*  10 */
-  MRB_TT_ICLASS,      /*  11 */
-  MRB_TT_SCLASS,      /*  12 */
-  MRB_TT_PROC,        /*  13 */
-  MRB_TT_ARRAY,       /*  14 */
-  MRB_TT_HASH,        /*  15 */
-  MRB_TT_STRING,      /*  16 */
-  MRB_TT_RANGE,       /*  17 */
-  MRB_TT_EXCEPTION,   /*  18 */
-  MRB_TT_FILE,        /*  19 */
-  MRB_TT_ENV,         /*  20 */
-  MRB_TT_DATA,        /*  21 */
-  MRB_TT_FIBER,       /*  22 */
-  MRB_TT_ISTRUCT,     /*  23 */
-  MRB_TT_BREAK,       /*  24 */
-  MRB_TT_MAXDEFINE    /*  25 */
+  MRB_TT_FALSE = 0,
+  MRB_TT_TRUE,
+  MRB_TT_FLOAT,
+  MRB_TT_FIXNUM,
+  MRB_TT_SYMBOL,
+  MRB_TT_UNDEF,
+  MRB_TT_CPTR,
+  MRB_TT_FREE,
+  MRB_TT_OBJECT,
+  MRB_TT_CLASS,
+  MRB_TT_MODULE,
+  MRB_TT_ICLASS,
+  MRB_TT_SCLASS,
+  MRB_TT_PROC,
+  MRB_TT_ARRAY,
+  MRB_TT_HASH,
+  MRB_TT_STRING,
+  MRB_TT_RANGE,
+  MRB_TT_EXCEPTION,
+  MRB_TT_ENV,
+  MRB_TT_DATA,
+  MRB_TT_FIBER,
+  MRB_TT_ISTRUCT,
+  MRB_TT_BREAK,
+  MRB_TT_MAXDEFINE
 };
 
 #include <mruby/object.h>
@@ -140,6 +148,13 @@ typedef void mrb_value;
 
 #endif
 
+#if defined(MRB_WORD_BOXING) || (defined(MRB_NAN_BOXING) && defined(MRB_64BIT))
+struct RCptr {
+  MRB_OBJECT_HEADER;
+  void *p;
+};
+#endif
+
 #if defined(MRB_NAN_BOXING)
 #include "boxing_nan.h"
 #elif defined(MRB_WORD_BOXING)
@@ -148,36 +163,106 @@ typedef void mrb_value;
 #include "boxing_no.h"
 #endif
 
+#define MRB_SYMBOL_BIT (sizeof(mrb_sym) * CHAR_BIT - MRB_SYMBOL_SHIFT)
+#define MRB_SYMBOL_MAX (UINT32_MAX >> MRB_SYMBOL_SHIFT)
+
+#if INTPTR_MAX < MRB_INT_MAX
+  typedef intptr_t mrb_ssize;
+# define MRB_SSIZE_MAX (INTPTR_MAX>>MRB_FIXNUM_SHIFT)
+#else
+  typedef mrb_int mrb_ssize;
+# define MRB_SSIZE_MAX MRB_INT_MAX
+#endif
+
+#ifndef mrb_immediate_p
+#define mrb_immediate_p(o) (mrb_type(o) < MRB_TT_FREE)
+#endif
 #ifndef mrb_fixnum_p
 #define mrb_fixnum_p(o) (mrb_type(o) == MRB_TT_FIXNUM)
 #endif
+#ifndef mrb_symbol_p
+#define mrb_symbol_p(o) (mrb_type(o) == MRB_TT_SYMBOL)
+#endif
 #ifndef mrb_undef_p
 #define mrb_undef_p(o) (mrb_type(o) == MRB_TT_UNDEF)
 #endif
 #ifndef mrb_nil_p
 #define mrb_nil_p(o)  (mrb_type(o) == MRB_TT_FALSE && !mrb_fixnum(o))
 #endif
+#ifndef mrb_false_p
+#define mrb_false_p(o) (mrb_type(o) == MRB_TT_FALSE && !!mrb_fixnum(o))
+#endif
+#ifndef mrb_true_p
+#define mrb_true_p(o)  (mrb_type(o) == MRB_TT_TRUE)
+#endif
+#ifndef MRB_WITHOUT_FLOAT
+#ifndef mrb_float_p
+#define mrb_float_p(o) (mrb_type(o) == MRB_TT_FLOAT)
+#endif
+#endif
+#ifndef mrb_array_p
+#define mrb_array_p(o) (mrb_type(o) == MRB_TT_ARRAY)
+#endif
+#ifndef mrb_string_p
+#define mrb_string_p(o) (mrb_type(o) == MRB_TT_STRING)
+#endif
+#ifndef mrb_hash_p
+#define mrb_hash_p(o) (mrb_type(o) == MRB_TT_HASH)
+#endif
+#ifndef mrb_cptr_p
+#define mrb_cptr_p(o) (mrb_type(o) == MRB_TT_CPTR)
+#endif
+#ifndef mrb_exception_p
+#define mrb_exception_p(o) (mrb_type(o) == MRB_TT_EXCEPTION)
+#endif
+#ifndef mrb_free_p
+#define mrb_free_p(o) (mrb_type(o) == MRB_TT_FREE)
+#endif
+#ifndef mrb_object_p
+#define mrb_object_p(o) (mrb_type(o) == MRB_TT_OBJECT)
+#endif
+#ifndef mrb_class_p
+#define mrb_class_p(o) (mrb_type(o) == MRB_TT_CLASS)
+#endif
+#ifndef mrb_module_p
+#define mrb_module_p(o) (mrb_type(o) == MRB_TT_MODULE)
+#endif
+#ifndef mrb_iclass_p
+#define mrb_iclass_p(o) (mrb_type(o) == MRB_TT_ICLASS)
+#endif
+#ifndef mrb_sclass_p
+#define mrb_sclass_p(o) (mrb_type(o) == MRB_TT_SCLASS)
+#endif
+#ifndef mrb_proc_p
+#define mrb_proc_p(o) (mrb_type(o) == MRB_TT_PROC)
+#endif
+#ifndef mrb_range_p
+#define mrb_range_p(o) (mrb_type(o) == MRB_TT_RANGE)
+#endif
+#ifndef mrb_env_p
+#define mrb_env_p(o) (mrb_type(o) == MRB_TT_ENV)
+#endif
+#ifndef mrb_data_p
+#define mrb_data_p(o) (mrb_type(o) == MRB_TT_DATA)
+#endif
+#ifndef mrb_fiber_p
+#define mrb_fiber_p(o) (mrb_type(o) == MRB_TT_FIBER)
+#endif
+#ifndef mrb_istruct_p
+#define mrb_istruct_p(o) (mrb_type(o) == MRB_TT_ISTRUCT)
+#endif
+#ifndef mrb_break_p
+#define mrb_break_p(o) (mrb_type(o) == MRB_TT_BREAK)
+#endif
 #ifndef mrb_bool
 #define mrb_bool(o)   (mrb_type(o) != MRB_TT_FALSE)
 #endif
-#if !defined(MRB_SYMBOL_BITSIZE)
-#define MRB_SYMBOL_BITSIZE (sizeof(mrb_sym) * CHAR_BIT)
-#define MRB_SYMBOL_MAX      UINT32_MAX
-#endif
-#ifndef MRB_WITHOUT_FLOAT
-#define mrb_float_p(o) (mrb_type(o) == MRB_TT_FLOAT)
-#endif
-#define mrb_symbol_p(o) (mrb_type(o) == MRB_TT_SYMBOL)
-#define mrb_array_p(o) (mrb_type(o) == MRB_TT_ARRAY)
-#define mrb_string_p(o) (mrb_type(o) == MRB_TT_STRING)
-#define mrb_hash_p(o) (mrb_type(o) == MRB_TT_HASH)
-#define mrb_cptr_p(o) (mrb_type(o) == MRB_TT_CPTR)
-#define mrb_exception_p(o) (mrb_type(o) == MRB_TT_EXCEPTION)
 #define mrb_test(o)   mrb_bool(o)
-MRB_API mrb_bool mrb_regexp_p(struct mrb_state*, mrb_value);
 
-/*
+/**
  * Returns a float in Ruby.
+ *
+ * Takes a float and boxes it into an mrb_value
  */
 #ifndef MRB_WITHOUT_FLOAT
 MRB_INLINE mrb_value mrb_float_value(struct mrb_state *mrb, mrb_float f)
@@ -189,7 +274,7 @@ MRB_INLINE mrb_value mrb_float_value(struct mrb_state *mrb, mrb_float f)
 }
 #endif
 
-static inline mrb_value
+MRB_INLINE mrb_value
 mrb_cptr_value(struct mrb_state *mrb, void *p)
 {
   mrb_value v;
@@ -198,8 +283,10 @@ mrb_cptr_value(struct mrb_state *mrb, void *p)
   return v;
 }
 
-/*
+/**
  * Returns a fixnum in Ruby.
+ *
+ * Takes an integer and boxes it into an mrb_value
  */
 MRB_INLINE mrb_value mrb_fixnum_value(mrb_int i)
 {
@@ -208,7 +295,7 @@ MRB_INLINE mrb_value mrb_fixnum_value(mrb_int i)
   return v;
 }
 
-static inline mrb_value
+MRB_INLINE mrb_value
 mrb_symbol_value(mrb_sym i)
 {
   mrb_value v;
@@ -216,7 +303,7 @@ mrb_symbol_value(mrb_sym i)
   return v;
 }
 
-static inline mrb_value
+MRB_INLINE mrb_value
 mrb_obj_value(void *p)
 {
   mrb_value v;
@@ -226,8 +313,7 @@ mrb_obj_value(void *p)
   return v;
 }
 
-
-/*
+/**
  * Get a nil mrb_value object.
  *
  * @return
@@ -240,7 +326,7 @@ MRB_INLINE mrb_value mrb_nil_value(void)
   return v;
 }
 
-/*
+/**
  * Returns false in Ruby.
  */
 MRB_INLINE mrb_value mrb_false_value(void)
@@ -250,7 +336,7 @@ MRB_INLINE mrb_value mrb_false_value(void)
   return v;
 }
 
-/*
+/**
  * Returns true in Ruby.
  */
 MRB_INLINE mrb_value mrb_true_value(void)
@@ -260,7 +346,7 @@ MRB_INLINE mrb_value mrb_true_value(void)
   return v;
 }
 
-static inline mrb_value
+MRB_INLINE mrb_value
 mrb_bool_value(mrb_bool boolean)
 {
   mrb_value v;
@@ -268,7 +354,7 @@ mrb_bool_value(mrb_bool boolean)
   return v;
 }
 
-static inline mrb_value
+MRB_INLINE mrb_value
 mrb_undef_value(void)
 {
   mrb_value v;
@@ -276,34 +362,25 @@ mrb_undef_value(void)
   return v;
 }
 
-#ifdef MRB_USE_ETEXT_EDATA
-#if (defined(__APPLE__) && defined(__MACH__))
-#include <mach-o/getsect.h>
-static inline mrb_bool
-mrb_ro_data_p(const char *p)
-{
-  return (const char*)get_etext() < p && p < (const char*)get_edata();
-}
-#else
-extern char _etext[];
-#ifdef MRB_NO_INIT_ARRAY_START
-extern char _edata[];
+#if defined(MRB_USE_ETEXT_EDATA) && !defined(MRB_USE_LINK_TIME_RO_DATA_P)
+# ifdef __GNUC__
+#  warning MRB_USE_ETEXT_EDATA is deprecated. Define MRB_USE_LINK_TIME_RO_DATA_P instead.
+# endif
+# define MRB_USE_LINK_TIME_RO_DATA_P
+#endif
 
-static inline mrb_bool
-mrb_ro_data_p(const char *p)
-{
-  return _etext < p && p < _edata;
-}
-#else
+#if defined(MRB_USE_CUSTOM_RO_DATA_P)
+/* If you define `MRB_USE_CUSTOM_RO_DATA_P`, you must implement `mrb_ro_data_p()`. */
+mrb_bool mrb_ro_data_p(const char *p);
+#elif defined(MRB_USE_LINK_TIME_RO_DATA_P)
+extern char __ehdr_start[];
 extern char __init_array_start[];
 
 static inline mrb_bool
 mrb_ro_data_p(const char *p)
 {
-  return _etext < p && p < (char*)&__init_array_start;
+  return __ehdr_start < p && p < __init_array_start;
 }
-#endif
-#endif
 #else
 # define mrb_ro_data_p(p) FALSE
 #endif

include/mruby/variable.h

@@ -1,5 +1,5 @@
-/*
-** mruby/variable.h - mruby variables
+/**
+** @file mruby/variable.h - mruby variables
 **
 ** See Copyright Notice in mruby.h
 */
@@ -97,18 +97,15 @@ MRB_API void mrb_gv_set(mrb_state *mrb, mrb_sym sym, mrb_value val);
  *
  * Example:
  *
- *     !!!ruby
  *     # Ruby style
  *     $value = nil
  *
- *     !!!c
  *     // C style
  *     mrb_sym sym = mrb_intern_lit(mrb, "$value");
  *     mrb_gv_remove(mrb, sym);
  *
  * @param mrb The mruby state reference
  * @param sym The name of the global variable
- * @param val The value of the global variable
  */
 MRB_API void mrb_gv_remove(mrb_state *mrb, mrb_sym sym);
 
@@ -117,6 +114,7 @@ MRB_API void mrb_mod_cv_set(mrb_state *mrb, struct RClass * c, mrb_sym sym, mrb_
 MRB_API void mrb_cv_set(mrb_state *mrb, mrb_value mod, mrb_sym sym, mrb_value v);
 MRB_API mrb_bool mrb_cv_defined(mrb_state *mrb, mrb_value mod, mrb_sym sym);
 mrb_value mrb_obj_iv_inspect(mrb_state*, struct RObject*);
+void mrb_obj_iv_set_force(mrb_state *mrb, struct RObject *obj, mrb_sym sym, mrb_value v);
 mrb_value mrb_mod_constants(mrb_state *mrb, mrb_value mod);
 mrb_value mrb_f_global_variables(mrb_state *mrb, mrb_value self);
 mrb_value mrb_obj_instance_variables(mrb_state*, mrb_value);

include/mruby/version.h

@@ -1,5 +1,5 @@
-/*
-** mruby/version.h - mruby version definition
+/**
+** @file mruby/version.h - mruby version definition
 **
 ** See Copyright Notice in mruby.h
 */
@@ -42,12 +42,12 @@ MRB_BEGIN_DECL
 /*
  * Minor release version number.
  */
-#define MRUBY_RELEASE_MINOR 0
+#define MRUBY_RELEASE_MINOR 1
 
 /*
  * Tiny release version number.
  */
-#define MRUBY_RELEASE_TEENY 1
+#define MRUBY_RELEASE_TEENY 2
 
 /*
  * The mruby version.
@@ -62,22 +62,36 @@ MRB_BEGIN_DECL
 /*
  * Release year.
  */
-#define MRUBY_RELEASE_YEAR 2019
+#define MRUBY_RELEASE_YEAR 2020
 
 /*
  * Release month.
  */
-#define MRUBY_RELEASE_MONTH 4
+#define MRUBY_RELEASE_MONTH 7
 
 /*
  * Release day.
  */
-#define MRUBY_RELEASE_DAY 4
+#define MRUBY_RELEASE_DAY 10
 
 /*
  * Release date as a string.
  */
-#define MRUBY_RELEASE_DATE MRB_STRINGIZE(MRUBY_RELEASE_YEAR) "-" MRB_STRINGIZE(MRUBY_RELEASE_MONTH) "-" MRB_STRINGIZE(MRUBY_RELEASE_DAY)
+#define MRUBY_RELEASE_DATE    \
+  MRUBY_RELEASE_YEAR_STR "-"  \
+  MRUBY_RELEASE_MONTH_STR "-" \
+  MRUBY_RELEASE_DAY_STR
+#define MRUBY_RELEASE_YEAR_STR MRB_STRINGIZE(MRUBY_RELEASE_YEAR)
+#if MRUBY_RELEASE_MONTH < 10
+#define MRUBY_RELEASE_MONTH_STR "0" MRB_STRINGIZE(MRUBY_RELEASE_MONTH)
+#else
+#define MRUBY_RELEASE_MONTH_STR MRB_STRINGIZE(MRUBY_RELEASE_MONTH)
+#endif
+#if MRUBY_RELEASE_DAY < 10
+#define MRUBY_RELEASE_DAY_STR "0" MRB_STRINGIZE(MRUBY_RELEASE_DAY)
+#else
+#define MRUBY_RELEASE_DAY_STR MRB_STRINGIZE(MRUBY_RELEASE_DAY)
+#endif
 
 /*
  * The year mruby was first created.
@@ -92,9 +106,9 @@ MRB_BEGIN_DECL
 /*
  * mruby's version, and release date.
  */
-#define MRUBY_DESCRIPTION      \
-  "mruby " MRUBY_VERSION       \
-  " (" MRUBY_RELEASE_DATE ") " \
+#define MRUBY_DESCRIPTION     \
+  "mruby " MRUBY_VERSION      \
+  " (" MRUBY_RELEASE_DATE ")" \
 
 /*
  * mruby's copyright information.

lib/mruby-core-ext.rb

@@ -1,3 +1,5 @@
+autoload :Pathname, 'pathname'
+
 class Object
   class << self
     def attr_block(*syms)
@@ -16,68 +18,10 @@ class String
   def relative_path
     relative_path_from(Dir.pwd)
   end
-
-  # Compatible with 1.9 on 1.8
-  unless (sprintf("%{a}", :a => 1) rescue false)
-    def %(params)
-      if params.is_a?(Hash)
-        str = self.clone
-        params.each do |k, v|
-          str.gsub!("%{#{k}}") { v }
-        end
-        str
-      else
-        if params.is_a?(Array)
-          sprintf(self, *params)
-        else
-          sprintf(self, params)
-        end
-      end
-    end
-  end
-end
-
-class Symbol
-  # Compatible with 1.9 on 1.8
-  unless method_defined?(:to_proc)
-    def to_proc
-      proc { |obj, *args| obj.send(self, *args) }
-    end
-  end
-end
-
-module Enumerable
-  # Compatible with 1.9 on 1.8
-  unless method_defined?(:each_with_object)
-    def each_with_object(memo)
-      return to_enum :each_with_object, memo unless block_given?
-      each { |obj| yield obj, memo }
-      memo
-    end
-  end
-end
-
-$pp_show = true
-
-if $verbose.nil?
-  if Rake.respond_to?(:verbose) && !Rake.verbose.nil?
-    if Rake.verbose.class == TrueClass
-      # verbose message logging
-      $pp_show = false
-    else
-      $pp_show = true
-      Rake.verbose(false)
-    end
-  else
-    # could not identify rake version
-    $pp_show = false
-  end
-else
-  $pp_show = false if $verbose
 end
 
 def _pp(cmd, src, tgt=nil, options={})
-  return unless $pp_show
+  return if Rake.verbose
 
   width = 5
   template = options[:indent] ? "%#{width*options[:indent]}s %s %s" : "%-#{width}s %s %s"

lib/mruby/build.rb

@@ -1,7 +1,11 @@
+require "mruby-core-ext"
 require "mruby/build/load_gems"
 require "mruby/build/command"
 
 module MRuby
+  autoload :Gem, "mruby/gem"
+  autoload :Lockfile, "mruby/lockfile"
+
   class << self
     def targets
       @targets ||= {}
@@ -22,7 +26,6 @@ module MRuby
 
     def initialize(name, &block)
       @name, @initializer = name.to_s, block
-      MRuby::Toolchain.toolchains ||= {}
       MRuby::Toolchain.toolchains[@name] = self
     end
 
@@ -30,13 +33,8 @@ module MRuby
       conf.instance_exec(conf, params, &@initializer)
     end
 
-    def self.load
-      Dir.glob("#{MRUBY_ROOT}/tasks/toolchains/*.rake").each do |file|
-        Kernel.load file
-      end
-    end
+    self.toolchains = {}
   end
-  Toolchain.load
 
   class Build
     class << self
@@ -45,7 +43,7 @@ module MRuby
     include Rake::DSL
     include LoadGems
     attr_accessor :name, :bins, :exts, :file_separator, :build_dir, :gem_clone_dir
-    attr_reader :libmruby_objs, :gems, :toolchains
+    attr_reader :libmruby_objs, :gems, :toolchains, :gem_dir_to_repo_url
     attr_writer :enable_bintest, :enable_test
 
     alias libmruby libmruby_objs
@@ -70,7 +68,7 @@ module MRuby
 
         @file_separator = '/'
         @build_dir = "#{build_dir}/#{@name}"
-        @gem_clone_dir = "#{build_dir}/mrbgems"
+        @gem_clone_dir = "#{build_dir}/repos/#{@name}"
         @cc = Command::Compiler.new(self, %w(.c))
         @cxx = Command::Compiler.new(self, %w(.cc .cxx .cpp))
         @objc = Command::Compiler.new(self, %w(.m))
@@ -90,7 +88,9 @@ module MRuby
         @cxx_abi_enabled = false
         @enable_bintest = false
         @enable_test = false
+        @enable_lock = true
         @toolchains = []
+        @gem_dir_to_repo_url = {}
 
         MRuby.targets[@name] = self
       end
@@ -118,6 +118,14 @@ module MRuby
       @enable_debug = true
     end
 
+    def disable_lock
+      @enable_lock = false
+    end
+
+    def lock_enabled?
+      Lockfile.enabled? && @enable_lock
+    end
+
     def disable_cxx_exception
       if @cxx_exception_enabled or @cxx_abi_enabled
         raise "cxx_exception already enabled"
@@ -155,8 +163,8 @@ module MRuby
       compilers.each { |c|
         c.defines += %w(MRB_ENABLE_CXX_EXCEPTION MRB_ENABLE_CXX_ABI)
         c.flags << c.cxx_compile_flag
+        c.flags = c.flags.flatten - c.cxx_invalid_flags.flatten
       }
-      compilers.each { |c| c.flags << c.cxx_compile_flag }
       linker.command = cxx.command if toolchains.find { |v| v == 'gcc' }
       @cxx_abi_enabled = true
     end
@@ -165,7 +173,7 @@ module MRuby
       obj = objfile(cxx_src) if obj.nil?
 
       file cxx_src => [src, __FILE__] do |t|
-        FileUtils.mkdir_p File.dirname t.name
+        mkdir_p File.dirname t.name
         IO.write t.name, <<EOS
 #define __STDC_CONSTANT_MACROS
 #define __STDC_LIMIT_MACROS
@@ -196,10 +204,15 @@ EOS
     end
 
     def toolchain(name, params={})
-      tc = Toolchain.toolchains[name.to_s]
-      fail "Unknown #{name} toolchain" unless tc
+      name = name.to_s
+      tc = Toolchain.toolchains[name] || begin
+        path = "#{MRUBY_ROOT}/tasks/toolchains/#{name}.rake"
+        fail "Unknown #{name} toolchain" unless File.exist?(path)
+        load path
+        Toolchain.toolchains[name]
+      end
       tc.setup(self, params)
-      @toolchains.unshift name.to_s
+      @toolchains.unshift name
     end
 
     def primary_toolchain
@@ -226,6 +239,10 @@ EOS
       gem :core => 'mruby-bin-mrbc'
     end
 
+    def locks
+      Lockfile.build(@name)
+    end
+
     def mrbcfile
       return @mrbcfile if @mrbcfile
 
@@ -255,15 +272,7 @@ EOS
       if name.is_a?(Array)
         name.flatten.map { |n| filename(n) }
       else
-        '"%s"' % name.gsub('/', file_separator)
-      end
-    end
-
-    def cygwin_filename(name)
-      if name.is_a?(Array)
-        name.flatten.map { |n| cygwin_filename(n) }
-      else
-        '"%s"' % `cygpath -w "#{filename(name)}"`.strip
+        name.gsub('/', file_separator)
       end
     end
 
@@ -303,7 +312,7 @@ EOS
     end
 
     def verbose_flag
-      $verbose ? ' -v' : ''
+      Rake.verbose ? ' -v' : ''
     end
 
     def run_test
@@ -327,7 +336,8 @@ EOS
       puts "         Binaries: #{@bins.join(', ')}" unless @bins.empty?
       unless @gems.empty?
         puts "    Included Gems:"
-        @gems.map do |gem|
+        gems = @gems.sort_by { |gem| gem.name }
+        gems.each do |gem|
           gem_version = " - #{gem.version}" if gem.version != '0.0.0'
           gem_summary = " - #{gem.summary}" if gem.summary
           puts "             #{gem.name}#{gem_version}#{gem_summary}"
@@ -369,7 +379,7 @@ EOS
     end
 
     def run_test
-      @test_runner.runner_options << ' -v' if $verbose
+      @test_runner.runner_options << verbose_flag
       mrbtest = exefile("#{build_dir}/bin/mrbtest")
       if (@test_runner.command == nil)
         puts "You should run #{mrbtest} on target device."
@@ -378,26 +388,5 @@ EOS
         @test_runner.run(mrbtest)
       end
     end
-
-    def big_endian
-      if @endian
-        puts "Endian has already specified as #{@endian}."
-        return
-      end
-      @endian = :big
-      @mrbc.compile_options += ' -E'
-      compilers.each do |c|
-        c.defines += %w(MRB_ENDIAN_BIG)
-      end
-    end
-
-    def little_endian
-      if @endian
-        puts "Endian has already specified as #{@endian}."
-        return
-      end
-      @endian = :little
-      @mrbc.compile_options += ' -e'
-    end
   end # CrossBuild
 end # MRuby

lib/mruby/build/command.rb

@@ -4,7 +4,7 @@ module MRuby
   class Command
     include Rake::DSL
     extend Forwardable
-    def_delegators :@build, :filename, :objfile, :libfile, :exefile, :cygwin_filename
+    def_delegators :@build, :filename, :objfile, :libfile, :exefile
     attr_accessor :build, :command
 
     def initialize(build)
@@ -24,6 +24,14 @@ module MRuby
       target
     end
 
+    def shellquote(s)
+      if ENV['OS'] == 'Windows_NT'
+        "\"#{s}\""
+      else
+        "#{s}"
+      end
+    end
+
     NotFoundCommands = {}
 
     private
@@ -41,7 +49,7 @@ module MRuby
   class Command::Compiler < Command
     attr_accessor :flags, :include_paths, :defines, :source_exts
     attr_accessor :compile_options, :option_define, :option_include_path, :out_ext
-    attr_accessor :cxx_compile_flag, :cxx_exception_flag
+    attr_accessor :cxx_compile_flag, :cxx_exception_flag, :cxx_invalid_flags
 
     def initialize(build, source_exts=[])
       super(build)
@@ -50,9 +58,10 @@ module MRuby
       @source_exts = source_exts
       @include_paths = ["#{MRUBY_ROOT}/include"]
       @defines = %w()
-      @option_include_path = '-I%s'
-      @option_define = '-D%s'
-      @compile_options = '%{flags} -o %{outfile} -c %{infile}'
+      @option_include_path = %q[-I"%s"]
+      @option_define = %q[-D"%s"]
+      @compile_options = %q[%{flags} -o "%{outfile}" -c "%{infile}"]
+      @cxx_invalid_flags = []
     end
 
     alias header_search_paths include_paths
@@ -70,25 +79,16 @@ module MRuby
     def all_flags(_defines=[], _include_paths=[], _flags=[])
       define_flags = [defines, _defines].flatten.map{ |d| option_define % d }
       include_path_flags = [include_paths, _include_paths].flatten.map do |f|
-        if MRUBY_BUILD_HOST_IS_CYGWIN
-          option_include_path % cygwin_filename(f)
-        else
-          option_include_path % filename(f)
-        end
+        option_include_path % filename(f)
       end
       [flags, define_flags, include_path_flags, _flags].flatten.join(' ')
     end
 
     def run(outfile, infile, _defines=[], _include_paths=[], _flags=[])
-      FileUtils.mkdir_p File.dirname(outfile)
+      mkdir_p File.dirname(outfile)
       _pp "CC", infile.relative_path, outfile.relative_path
-      if MRUBY_BUILD_HOST_IS_CYGWIN
-        _run compile_options, { :flags => all_flags(_defines, _include_paths, _flags),
-                                :infile => cygwin_filename(infile), :outfile => cygwin_filename(outfile) }
-      else
-        _run compile_options, { :flags => all_flags(_defines, _include_paths, _flags),
-                                :infile => filename(infile), :outfile => filename(outfile) }
-      end
+      _run compile_options, { :flags => all_flags(_defines, _include_paths, _flags),
+                              :infile => filename(infile), :outfile => filename(outfile) }
     end
 
     def define_rules(build_dir, source_dir='')
@@ -127,13 +127,40 @@ module MRuby
     end
 
     private
+
+    #
+    # === Example of +.d+ file
+    #
+    # ==== Without <tt>-MP</tt> compiler flag
+    #
+    #   /build/host/src/array.o: \
+    #     /src/array.c \
+    #     /include/mruby/common.h \
+    #     /include/mruby/value.h \
+    #     /src/value_array.h
+    #
+    # ==== With <tt>-MP</tt> compiler flag
+    #
+    #   /build/host/src/array.o: \
+    #     /src/array.c \
+    #     /include/mruby/common.h \
+    #     /include/mruby/value.h \
+    #     /src/value_array.h
+    #
+    #   /include/mruby/common.h:
+    #
+    #   /include/mruby/value.h:
+    #
+    #   /src/value_array.h:
+    #
     def get_dependencies(file)
       file = file.ext('d') unless File.extname(file) == '.d'
+      deps = []
       if File.exist?(file)
-        File.read(file).gsub("\\\n ", "").scan(/^\S+:\s+(.+)$/).flatten.map {|s| s.split(' ') }.flatten
-      else
-        []
-      end + [ MRUBY_CONFIG ]
+        File.foreach(file){|line| deps << $1 if /^ +(.*?)(?: *\\)?$/ =~ line}
+        deps.uniq!
+      end
+      deps << MRUBY_CONFIG
     end
   end
 
@@ -148,18 +175,14 @@ module MRuby
       @flags_before_libraries, @flags_after_libraries = [], []
       @libraries = []
       @library_paths = []
-      @option_library = '-l%s'
-      @option_library_path = '-L%s'
-      @link_options = "%{flags} -o %{outfile} %{objs} %{flags_before_libraries} %{libs} %{flags_after_libraries}"
+      @option_library = %q[-l"%s"]
+      @option_library_path = %q[-L"%s"]
+      @link_options = %Q[%{flags} -o "%{outfile}" %{objs} %{flags_before_libraries} %{libs} %{flags_after_libraries}]
     end
 
     def all_flags(_library_paths=[], _flags=[])
       library_path_flags = [library_paths, _library_paths].flatten.map do |f|
-        if MRUBY_BUILD_HOST_IS_CYGWIN
-          option_library_path % cygwin_filename(f)
-        else
-          option_library_path % filename(f)
-        end
+        option_library_path % filename(f)
       end
       [flags, library_path_flags, _flags].flatten.join(' ')
     end
@@ -169,23 +192,15 @@ module MRuby
     end
 
     def run(outfile, objfiles, _libraries=[], _library_paths=[], _flags=[], _flags_before_libraries=[], _flags_after_libraries=[])
-      FileUtils.mkdir_p File.dirname(outfile)
+      mkdir_p File.dirname(outfile)
       library_flags = [libraries, _libraries].flatten.map { |d| option_library % d }
 
       _pp "LD", outfile.relative_path
-      if MRUBY_BUILD_HOST_IS_CYGWIN
-        _run link_options, { :flags => all_flags(_library_paths, _flags),
-                             :outfile => cygwin_filename(outfile) , :objs => cygwin_filename(objfiles).join(' '),
-                             :flags_before_libraries => [flags_before_libraries, _flags_before_libraries].flatten.join(' '),
-                             :flags_after_libraries => [flags_after_libraries, _flags_after_libraries].flatten.join(' '),
-                             :libs => library_flags.join(' ') }
-      else
-        _run link_options, { :flags => all_flags(_library_paths, _flags),
-                             :outfile => filename(outfile) , :objs => filename(objfiles).join(' '),
-                             :flags_before_libraries => [flags_before_libraries, _flags_before_libraries].flatten.join(' '),
-                             :flags_after_libraries => [flags_after_libraries, _flags_after_libraries].flatten.join(' '),
-                             :libs => library_flags.join(' ') }
-      end
+      _run link_options, { :flags => all_flags(_library_paths, _flags),
+                            :outfile => filename(outfile) , :objs => filename(objfiles).map{|f| %Q["#{f}"]}.join(' '),
+                            :flags_before_libraries => [flags_before_libraries, _flags_before_libraries].flatten.join(' '),
+                            :flags_after_libraries => [flags_after_libraries, _flags_after_libraries].flatten.join(' '),
+                            :libs => library_flags.join(' ') }
     end
   end
 
@@ -195,17 +210,13 @@ module MRuby
     def initialize(build)
       super
       @command = ENV['AR'] || 'ar'
-      @archive_options = 'rs %{outfile} %{objs}'
+      @archive_options = 'rs "%{outfile}" %{objs}'
     end
 
     def run(outfile, objfiles)
-      FileUtils.mkdir_p File.dirname(outfile)
+      mkdir_p File.dirname(outfile)
       _pp "AR", outfile.relative_path
-      if MRUBY_BUILD_HOST_IS_CYGWIN
-        _run archive_options, { :outfile => cygwin_filename(outfile), :objs => cygwin_filename(objfiles).join(' ') }
-      else
-        _run archive_options, { :outfile => filename(outfile), :objs => filename(objfiles).join(' ') }
-      end
+      _run archive_options, { :outfile => filename(outfile), :objs => filename(objfiles).map{|f| %Q["#{f}"]}.join(' ') }
     end
   end
 
@@ -215,11 +226,11 @@ module MRuby
     def initialize(build)
       super
       @command = 'bison'
-      @compile_options = '-o %{outfile} %{infile}'
+      @compile_options = %q[-o "%{outfile}" "%{infile}"]
     end
 
     def run(outfile, infile)
-      FileUtils.mkdir_p File.dirname(outfile)
+      mkdir_p File.dirname(outfile)
       _pp "YACC", infile.relative_path, outfile.relative_path
       _run compile_options, { :outfile => filename(outfile) , :infile => filename(infile) }
     end
@@ -231,11 +242,11 @@ module MRuby
     def initialize(build)
       super
       @command = 'gperf'
-      @compile_options = '-L ANSI-C -C -p -j1 -i 1 -g -o -t -N mrb_reserved_word -k"1,3,$" %{infile} > %{outfile}'
+      @compile_options = %q[-L ANSI-C -C -p -j1 -i 1 -g -o -t -N mrb_reserved_word -k"1,3,$" "%{infile}" > "%{outfile}"]
     end
 
     def run(outfile, infile)
-      FileUtils.mkdir_p File.dirname(outfile)
+      mkdir_p File.dirname(outfile)
       _pp "GPERF", infile.relative_path, outfile.relative_path
       _run compile_options, { :outfile => filename(outfile) , :infile => filename(infile) }
     end
@@ -243,36 +254,50 @@ module MRuby
 
   class Command::Git < Command
     attr_accessor :flags
-    attr_accessor :clone_options, :pull_options, :checkout_options
+    attr_accessor :clone_options, :pull_options, :checkout_options, :checkout_detach_options, :reset_options
 
     def initialize(build)
       super
       @command = 'git'
       @flags = %w[]
       @clone_options = "clone %{flags} %{url} %{dir}"
-      @pull_options = "pull"
-      @checkout_options = "checkout %{checksum_hash}"
+      @pull_options = "--git-dir %{repo_dir}/.git --work-tree %{repo_dir} pull"
+      @checkout_options = "--git-dir %{repo_dir}/.git --work-tree %{repo_dir} checkout %{checksum_hash}"
+      @checkout_detach_options = "--git-dir %{repo_dir}/.git --work-tree %{repo_dir} checkout --detach %{checksum_hash}"
+      @reset_options = "--git-dir %{repo_dir}/.git --work-tree %{repo_dir} reset %{checksum_hash}"
     end
 
     def run_clone(dir, url, _flags = [])
       _pp "GIT", url, dir.relative_path
-      _run clone_options, { :flags => [flags, _flags].flatten.join(' '), :url => url, :dir => filename(dir) }
+      _run clone_options, { :flags => [flags, _flags].flatten.join(' '), :url => shellquote(url), :dir => shellquote(filename(dir)) }
     end
 
     def run_pull(dir, url)
-      root = Dir.pwd
-      Dir.chdir dir
       _pp "GIT PULL", url, dir.relative_path
-      _run pull_options
-      Dir.chdir root
+      _run pull_options, { :repo_dir => shellquote(dir) }
     end
 
     def run_checkout(dir, checksum_hash)
-      root = Dir.pwd
-      Dir.chdir dir
-      _pp "GIT CHECKOUT", checksum_hash
-      _run checkout_options, { :checksum_hash => checksum_hash }
-      Dir.chdir root
+      _pp "GIT CHECKOUT", dir, checksum_hash
+      _run checkout_options, { :checksum_hash => checksum_hash, :repo_dir => shellquote(dir) }
+    end
+
+    def run_checkout_detach(dir, checksum_hash)
+      _pp "GIT CHECKOUT DETACH", dir, checksum_hash
+      _run checkout_detach_options, { :checksum_hash => checksum_hash, :repo_dir => shellquote(dir) }
+    end
+
+    def run_reset_hard(dir, checksum_hash)
+      _pp "GIT RESET", dir, checksum_hash
+      _run reset_options, { :checksum_hash => checksum_hash, :repo_dir => shellquote(dir) }
+    end
+
+    def commit_hash(dir)
+      `#{@command} --git-dir #{shellquote(dir +'/.git')} --work-tree #{shellquote(dir)} rev-parse --verify HEAD`.strip
+    end
+
+    def current_branch(dir)
+      `#{@command} --git-dir #{shellquote(dir + '/.git')} --work-tree #{shellquote(dir)} rev-parse --abbrev-ref HEAD`.strip
     end
   end
 
@@ -291,7 +316,9 @@ module MRuby
       infiles.each do |f|
         _pp "MRBC", f.relative_path, nil, :indent => 2
       end
-      IO.popen("#{filename @command} #{@compile_options % {:funcname => funcname}} #{filename(infiles).join(' ')}", 'r+') do |io|
+      cmd = %Q["#{filename @command}" #{@compile_options % {:funcname => funcname}} #{filename(infiles).map{|f| %Q["#{f}"]}.join(' ')}]
+      puts cmd if Rake.verbose
+      IO.popen(cmd, 'r+') do |io|
         out.puts io.read
       end
       # if mrbc execution fail, drop the file

lib/mruby/build/load_gems.rb

@@ -13,13 +13,12 @@ module MRuby
     end
 
     def gem(gemdir, &block)
-      caller_dir = File.expand_path(File.dirname(/^(.*?):\d/.match(caller.first).to_a[1]))
-
       if gemdir.is_a?(Hash)
         gemdir = load_special_path_gem(gemdir)
       elsif GemBox.path && gemdir.is_a?(String)
         gemdir = File.expand_path(gemdir, File.dirname(GemBox.path))
       else
+        caller_dir = File.expand_path(File.dirname(caller(1,1)[0][/^(.*?):\d/,1]))
         gemdir = File.expand_path(gemdir, caller_dir)
       end
 
@@ -58,7 +57,7 @@ module MRuby
         if File.exist? mgem_list_dir
           git.run_pull mgem_list_dir, mgem_list_url if $pull_gems
         else
-          FileUtils.mkdir_p mgem_list_dir
+          mkdir_p mgem_list_dir
           git.run_clone mgem_list_dir, mgem_list_url, "--depth 1"
         end
 
@@ -83,27 +82,41 @@ module MRuby
         # by default the 'master' branch is used
         branch = params[:branch] ? params[:branch] : 'master'
 
+        lock = locks[url] if lock_enabled?
+
         if File.exist?(gemdir)
           if $pull_gems
+            # Jump to the top of the branch
+            git.run_checkout gemdir, branch
             git.run_pull gemdir, url
-          else
-            gemdir
+          elsif params[:checksum_hash]
+            git.run_checkout_detach gemdir, params[:checksum_hash]
+          elsif lock
+            git.run_checkout_detach gemdir, lock['commit']
           end
         else
           options = [params[:options]] || []
           options << "--recursive"
           options << "--branch \"#{branch}\""
           options << "--depth 1" unless params[:checksum_hash]
-          FileUtils.mkdir_p "#{gem_clone_dir}"
+          mkdir_p "#{gem_clone_dir}"
           git.run_clone gemdir, url, options
+
+          # Jump to the specified commit
+          if params[:checksum_hash]
+            git.run_checkout_detach gemdir, params[:checksum_hash]
+          elsif lock
+            git.run_checkout_detach gemdir, lock['commit']
+          end
         end
 
-        if params[:checksum_hash]
-          # Jump to the specified commit
-          git.run_checkout gemdir, params[:checksum_hash]
-        else
-          # Jump to the top of the branch
-          git.run_checkout gemdir, branch if $pull_gems
+        if lock_enabled?
+          @gem_dir_to_repo_url[gemdir] = url unless params[:path]
+          locks[url] = {
+            'url' => url,
+            'branch' => git.current_branch(gemdir),
+            'commit' => git.commit_hash(gemdir),
+          }
         end
 
         gemdir << "/#{params[:path]}" if params[:path]

lib/mruby/gem.rb

@@ -1,7 +1,6 @@
-require 'pathname'
 require 'forwardable'
-require 'tsort'
-require 'shellwords'
+autoload :TSort, 'tsort'
+autoload :Shellwords, 'shellwords'
 
 module MRuby
   module Gem
@@ -92,6 +91,9 @@ module MRuby
         build.libmruby_objs << @objs
 
         instance_eval(&@build_config_initializer) if @build_config_initializer
+
+        repo_url = build.gem_dir_to_repo_url[dir]
+        build.locks[repo_url]['version'] = version if repo_url
       end
 
       def setup_compilers
@@ -104,6 +106,15 @@ module MRuby
         define_gem_init_builder if @generate_functions
       end
 
+      def for_windows?
+        if build.kind_of?(MRuby::CrossBuild)
+          return %w(x86_64-w64-mingw32 i686-w64-mingw32).include?(build.host_target)
+        elsif build.kind_of?(MRuby::Build)
+          return ('A'..'Z').to_a.any? { |vol| Dir.exist?("#{vol}:") }
+        end
+        return false
+      end
+
       def add_dependency(name, *requirements)
         default_gem = requirements.last.kind_of?(Hash) ? requirements.pop : nil
         requirements = ['>= 0.0.0'] if requirements.empty?
@@ -155,7 +166,7 @@ module MRuby
       def define_gem_init_builder
         file objfile("#{build_dir}/gem_init") => [ "#{build_dir}/gem_init.c", File.join(dir, "mrbgem.rake") ]
         file "#{build_dir}/gem_init.c" => [build.mrbcfile, __FILE__] + [rbfiles].flatten do |t|
-          FileUtils.mkdir_p build_dir
+          mkdir_p build_dir
           generate_gem_init("#{build_dir}/gem_init.c")
         end
       end
@@ -267,16 +278,18 @@ module MRuby
       # ~> compare algorithm
       #
       # Example:
+      #    ~> 2     means >= 2.0.0 and < 3.0.0
       #    ~> 2.2   means >= 2.2.0 and < 3.0.0
-      #    ~> 2.2.0 means >= 2.2.0 and < 2.3.0
+      #    ~> 2.2.2 means >= 2.2.2 and < 2.3.0
       def twiddle_wakka_ok?(other)
         gr_or_eql = (self <=> other) >= 0
-        still_minor = (self <=> other.skip_minor) < 0
-        gr_or_eql and still_minor
+        still_major_or_minor = (self <=> other.skip_major_or_minor) < 0
+        gr_or_eql and still_major_or_minor
       end
 
-      def skip_minor
+      def skip_major_or_minor
         a = @ary.dup
+        a << 0 if a.size == 1 # ~> 2 can also be represented as ~> 2.0
         a.slice!(-1)
         a[-1] = a[-1].succ
         a

lib/mruby/lockfile.rb

@@ -0,0 +1,81 @@
+autoload :YAML, 'yaml'
+
+module MRuby
+  autoload :Source, 'mruby/source'
+
+  class Lockfile
+    class << self
+      def enable
+        @enabled = true
+      end
+
+      def disable
+        @enabled = false
+      end
+
+      def enabled?
+        @enabled
+      end
+
+      def build(target_name)
+        instance.build(target_name)
+      end
+
+      def write
+        instance.write if enabled?
+      end
+
+      def instance
+        @instance ||= new("#{MRUBY_CONFIG}.lock")
+      end
+    end
+
+    def initialize(filename)
+      @filename = filename
+    end
+
+    def build(target_name)
+      read[target_name] ||= {}
+    end
+
+    def write
+      locks = {"mruby_version" => mruby}
+      locks["builds"] = @builds if @builds
+      File.write(@filename, YAML.dump(locks))
+    end
+
+    private
+
+    def read
+      @builds ||= if File.exist?(@filename)
+                    YAML.load_file(@filename)["builds"] || {}
+                  else
+                    {}
+                  end
+    end
+
+    def shellquote(s)
+      if ENV['OS'] == 'Windows_NT'
+        "\"#{s}\""
+      else
+        "'#{s}'"
+      end
+    end
+
+    def mruby
+      mruby = {
+        'version' => MRuby::Source::MRUBY_VERSION,
+        'release_no' => MRuby::Source::MRUBY_RELEASE_NO,
+      }
+
+      git_dir = "#{MRUBY_ROOT}/.git"
+      if File.directory?(git_dir)
+        mruby['git_commit'] = `git --git-dir #{shellquote(git_dir)} --work-tree #{shellquote(MRUBY_ROOT)} rev-parse --verify HEAD`.strip
+      end
+
+      mruby
+    end
+
+    enable
+  end
+end

lib/mruby/source.rb

@@ -6,7 +6,9 @@ module MRuby
     ROOT = Pathname.new(File.expand_path('../../../',__FILE__))
 
     # Reads a constant defined at version.h
-    MRUBY_READ_VERSION_CONSTANT = Proc.new { |name| ROOT.join('include','mruby','version.h').read.match(/^#define #{name} +"?([\w\. ]+)"?$/)[1] }
+    MRUBY_READ_VERSION_CONSTANT = Proc.new do |name|
+      ROOT.join('include','mruby','version.h').read.match(/^#define #{name} +"?([\w\. ]+)"?\r?$/)[1]
+    end
 
     MRUBY_RUBY_VERSION = MRUBY_READ_VERSION_CONSTANT['MRUBY_RUBY_VERSION']
     MRUBY_RUBY_ENGINE = MRUBY_READ_VERSION_CONSTANT['MRUBY_RUBY_ENGINE']

minirake

@@ -1,605 +1,2 @@
-#!/usr/bin/env ruby
-
-# Original is https://github.com/jimweirich/rake/
-# Copyright (c) 2003 Jim Weirich
-# License: MIT-LICENSE
-
-require 'getoptlong'
-require 'fileutils'
-
-$rake_fiber_table = {}
-$rake_jobs = 1
-$rake_failed = []
-
-class String
-  def ext(newext='')
-    return self.dup if ['.', '..'].include? self
-    if newext != ''
-      newext = (newext =~ /^\./) ? newext : ("." + newext)
-    end
-    self.chomp(File.extname(self)) << newext
-  end
-
-  def pathmap(spec=nil, &block)
-    return self if spec.nil?
-    result = ''
-    spec.scan(/%\{[^}]*\}-?\d*[sdpfnxX%]|%-?\d+d|%.|[^%]+/) do |frag|
-      case frag
-      when '%f'
-        result << File.basename(self)
-      when '%n'
-        result << File.basename(self).ext
-      when '%d'
-        result << File.dirname(self)
-      when '%x'
-        result << File.extname(self)
-      when '%X'
-        result << self.ext
-      when '%p'
-        result << self
-      when '%s'
-        result << (File::ALT_SEPARATOR || File::SEPARATOR)
-      when '%-'
-        # do nothing
-      when '%%'
-        result << "%"
-      when /%(-?\d+)d/
-        result << pathmap_partial($1.to_i)
-      when /^%\{([^}]*)\}(\d*[dpfnxX])/
-        patterns, operator = $1, $2
-        result << pathmap('%' + operator).pathmap_replace(patterns, &block)
-      when /^%/
-        fail ArgumentError, "Unknown pathmap specifier #{frag} in '#{spec}'"
-      else
-        result << frag
-      end
-    end
-    result
-  end
-end
-
-module MiniRake
-  class Task
-    TASKS = Hash.new
-    RULES = Array.new
-
-    # List of prerequisites for a task.
-    attr_reader :prerequisites
-
-    # Source dependency for rule synthesized tasks.  Nil if task was not
-    # sythesized from a rule.
-    attr_accessor :source
-
-    # Create a task named +task_name+ with no actions or prerequisites..
-    # use +enhance+ to add actions and prerequisites.
-    def initialize(task_name)
-      @name = task_name
-      @prerequisites = []
-      @actions = []
-    end
-
-    # Enhance a task with prerequisites or actions.  Returns self.
-    def enhance(deps=nil, &block)
-      @prerequisites |= deps if deps
-      @actions << block if block_given?
-      self
-    end
-
-    # Name of the task.
-    def name
-      @name.to_s
-    end
-
-    def done?; @done end
-    def running?; @running end
-
-    # Invoke the task if it is needed. Prerequisites are invoked first.
-    def invoke
-      puts "Invoke #{name} (already=[#{@already_invoked}], needed=[#{needed?}])" if $trace
-      return if @already_invoked
-      prerequisites = @prerequisites.collect{ |n| n.is_a?(Proc) ? n.call(name) : n }.flatten
-      prerequisites.each do |n|
-        t = Task[n]
-        unless t.done?
-          return prerequisites.select{|v| v = Task[v]; v && (!v.done? || !v.running?) }
-        end
-      end
-
-      @already_invoked = true
-
-      if needed?
-        @running = true
-        if $rake_root_fiber
-          return Fiber.new do
-            self.execute
-            $rake_root_fiber.transfer
-          end
-        else
-          self.execute
-        end
-      end
-
-      @done = true
-    end
-
-    # Execute the actions associated with this task.
-    def execute
-      puts "Execute #{name}" if $trace
-      self.class.enhance_with_matching_rule(name) if @actions.empty?
-      unless $dryrun
-        @actions.each { |act| act.call(self) }
-      end
-      @done = true
-      @running = false
-    end
-
-    # Is this task needed?
-    def needed?
-      true
-    end
-
-    # Timestamp for this task.  Basic tasks return the current time for
-    # their time stamp.  Other tasks can be more sophisticated.
-    def timestamp
-      Time.now
-    end
-
-    # Class Methods ----------------------------------------------------
-
-    class << self
-
-      # Clear the task list.  This cause rake to immediately forget all
-      # the tasks that have been assigned.  (Normally used in the unit
-      # tests.)
-      def clear
-        TASKS.clear
-        RULES.clear
-      end
-
-      # List of all defined tasks.
-      def tasks
-        TASKS.keys.sort.collect { |tn| Task[tn] }
-      end
-
-      # Return a task with the given name.  If the task is not currently
-      # known, try to synthesize one from the defined rules.  If no
-      # rules are found, but an existing file matches the task name,
-      # assume it is a file task with no dependencies or actions.
-      def [](task_name)
-        task_name = task_name.to_s
-        if task = TASKS[task_name]
-          return task
-        end
-        if task = enhance_with_matching_rule(task_name)
-          return task
-        end
-        if File.exist?(task_name)
-          return FileTask.define_task(task_name)
-        end
-        fail "Don't know how to rake #{task_name}"
-      end
-
-      # Define a task given +args+ and an option block.  If a rule with
-      # the given name already exists, the prerequisites and actions are
-      # added to the existing task.
-      def define_task(args, &block)
-        task_name, deps = resolve_args(args)
-        lookup(task_name).enhance([deps].flatten, &block)
-      end
-
-      # Define a rule for synthesizing tasks.
-      def create_rule(args, &block)
-        pattern, deps = resolve_args(args)
-        pattern = Regexp.new(Regexp.quote(pattern) + '$') if String === pattern
-        RULES << [pattern, deps, block]
-      end
-
-
-      # Lookup a task.  Return an existing task if found, otherwise
-      # create a task of the current type.
-      def lookup(task_name)
-        name = task_name.to_s
-        TASKS[name] ||= self.new(name)
-      end
-
-      # If a rule can be found that matches the task name, enhance the
-      # task with the prerequisites and actions from the rule.  Set the
-      # source attribute of the task appropriately for the rule.  Return
-      # the enhanced task or nil of no rule was found.
-      def enhance_with_matching_rule(task_name)
-        RULES.each do |pattern, extensions, block|
-          if pattern.match(task_name)
-            ext = extensions.first
-            deps = extensions[1..-1]
-            case ext
-            when String
-              source = task_name.sub(/\.[^.]*$/, ext)
-            when Proc
-              source = ext.call(task_name)
-            else
-              fail "Don't know how to handle rule dependent: #{ext.inspect}"
-            end
-            if File.exist?(source)
-              task = FileTask.define_task({task_name => [source]+deps}, &block)
-              task.source = source
-              return task
-            end
-          end
-        end
-        nil
-      end
-
-      private
-
-      # Resolve the arguments for a task/rule.
-      def resolve_args(args)
-        case args
-        when Hash
-          fail "Too Many Task Names: #{args.keys.join(' ')}" if args.size > 1
-          fail "No Task Name Given" if args.size < 1
-          task_name = args.keys[0]
-          deps = args[task_name]
-          deps = [deps] if (String===deps) || (Regexp===deps) || (Proc===deps)
-        else
-          task_name = args
-          deps = []
-        end
-        [task_name, deps]
-      end
-    end
-  end
-
-
-  ######################################################################
-  class FileTask < Task
-    # Is this file task needed?  Yes if it doesn't exist, or if its time
-    # stamp is out of date.
-    def needed?
-      return true unless File.exist?(name)
-      prerequisites = @prerequisites.collect{ |n| n.is_a?(Proc) ? n.call(name) : n }.flatten
-      latest_prereq = prerequisites.collect{|n| Task[n].timestamp}.max
-      return false if latest_prereq.nil?
-      timestamp < latest_prereq
-    end
-
-    # Time stamp for file task.
-    def timestamp
-      return Time.at(0) unless File.exist?(name)
-      stat = File::stat(name.to_s)
-      stat.directory? ? Time.at(0) : stat.mtime
-    end
-  end
-
-  module DSL
-    # Declare a basic task.
-    def task(args, &block)
-      MiniRake::Task.define_task(args, &block)
-    end
-
-    # Declare a file task.
-    def file(args, &block)
-      MiniRake::FileTask.define_task(args, &block)
-    end
-
-    # Declare a set of files tasks to create the given directories on
-    # demand.
-    def directory(args, &block)
-      MiniRake::FileTask.define_task(args) do |t|
-        block.call(t) unless block.nil?
-        dir = args.is_a?(Hash) ? args.keys.first : args
-        (dir.split(File::SEPARATOR) + ['']).inject do |acc, part|
-          (acc + File::SEPARATOR).tap do |d|
-            Dir.mkdir(d) unless File.exists? d
-          end + part
-        end
-      end
-    end
-
-    # Declare a rule for auto-tasks.
-    def rule(args, &block)
-      MiniRake::Task.create_rule(args, &block)
-    end
-
-    # Write a message to standard out if $verbose is enabled.
-    def log(msg)
-      print "  " if $trace && $verbose
-      puts msg if $verbose
-    end
-
-    # Run the system command +cmd+.
-    def sh(cmd)
-      puts cmd if $verbose
-
-      if !$rake_root_fiber || Fiber.current == $rake_root_fiber
-        system(cmd) or fail "Command Failed: [#{cmd}]"
-        return
-      end
-
-      pid = Process.spawn(cmd)
-      $rake_fiber_table[pid] = {
-        fiber: Fiber.current,
-        command: cmd,
-        process_waiter: Process.detach(pid)
-      }
-      $rake_root_fiber.transfer
-    end
-
-    def desc(text)
-    end
-  end
-end
-
-Rake = MiniRake
-extend MiniRake::DSL
-
-
-######################################################################
-# Task Definition Functions ...
-
-######################################################################
-# Rake main application object.  When invoking +rake+ from the command
-# line, a RakeApp object is created and run.
-#
-class RakeApp
-  RAKEFILES = ['rakefile', 'Rakefile']
-
-  OPTIONS = [
-    ['--dry-run',  '-n', GetoptLong::NO_ARGUMENT,
-      "Do a dry run without executing actions."],
-    ['--help',     '-H', GetoptLong::NO_ARGUMENT,
-      "Display this help message."],
-    ['--libdir',   '-I', GetoptLong::REQUIRED_ARGUMENT,
-      "Include LIBDIR in the search path for required modules."],
-    ['--nosearch', '-N', GetoptLong::NO_ARGUMENT,
-      "Do not search parent directories for the Rakefile."],
-    ['--quiet',    '-q', GetoptLong::NO_ARGUMENT,
-      "Do not log messages to standard output (default)."],
-    ['--rakefile', '-f', GetoptLong::REQUIRED_ARGUMENT,
-      "Use FILE as the rakefile."],
-    ['--require',  '-r', GetoptLong::REQUIRED_ARGUMENT,
-      "Require MODULE before executing rakefile."],
-    ['--tasks',    '-T', GetoptLong::NO_ARGUMENT,
-      "Display the tasks and dependencies, then exit."],
-    ['--pull-gems','-p', GetoptLong::NO_ARGUMENT,
-      "Pull all git mrbgems."],
-    ['--trace',    '-t', GetoptLong::NO_ARGUMENT,
-      "Turn on invoke/execute tracing."],
-    ['--usage',    '-h', GetoptLong::NO_ARGUMENT,
-      "Display usage."],
-    ['--verbose',  '-v', GetoptLong::NO_ARGUMENT,
-      "Log message to standard output."],
-    ['--directory', '-C', GetoptLong::REQUIRED_ARGUMENT,
-      "Change executing directory of rakefiles."],
-    ['--jobs', '-j', GetoptLong::REQUIRED_ARGUMENT,
-      'Execute rake with parallel jobs.']
-  ]
-
-  # Create a RakeApp object.
-  def initialize
-    @rakefile = nil
-    @nosearch = false
-  end
-
-  # True if one of the files in RAKEFILES is in the current directory.
-  # If a match is found, it is copied into @rakefile.
-  def have_rakefile
-    RAKEFILES.each do |fn|
-      if File.exist?(fn)
-        @rakefile = fn
-        return true
-      end
-    end
-    return false
-  end
-
-  # Display the program usage line.
-  def usage
-      puts "rake [-f rakefile] {options} targets..."
-  end
-
-  # Display the rake command line help.
-  def help
-    usage
-    puts
-    puts "Options are ..."
-    puts
-    OPTIONS.sort.each do |long, short, mode, desc|
-      if mode == GetoptLong::REQUIRED_ARGUMENT
-        if desc =~ /\b([A-Z]{2,})\b/
-          long = long + "=#{$1}"
-        end
-      end
-      printf "  %-20s (%s)\n", long, short
-      printf "      %s\n", desc
-    end
-  end
-
-  # Display the tasks and dependencies.
-  def display_tasks
-    MiniRake::Task.tasks.each do |t|
-      puts "#{t.class} #{t.name}"
-      t.prerequisites.each { |pre| puts "    #{pre}" }
-    end
-  end
-
-  # Return a list of the command line options supported by the
-  # program.
-  def command_line_options
-    OPTIONS.collect { |lst| lst[0..-2] }
-  end
-
-  # Do the option defined by +opt+ and +value+.
-  def do_option(opt, value)
-    case opt
-    when '--dry-run'
-      $dryrun = true
-      $trace = true
-    when '--help'
-      help
-      exit
-    when '--libdir'
-      $:.push(value)
-    when '--nosearch'
-      @nosearch = true
-    when '--quiet'
-      $verbose = false
-    when '--rakefile'
-      RAKEFILES.clear
-      RAKEFILES << value
-    when '--require'
-      require value
-    when '--tasks'
-      $show_tasks = true
-    when '--pull-gems'
-      $pull_gems = true
-    when '--trace'
-      $trace = true
-    when '--usage'
-      usage
-      exit
-    when '--verbose'
-      $verbose = true
-    when '--version'
-      puts "rake, version #{RAKEVERSION}"
-      exit
-    when '--directory'
-      Dir.chdir value
-    when '--jobs'
-      $rake_jobs = [value.to_i, 1].max
-    else
-      fail "Unknown option: #{opt}"
-    end
-  end
-
-  # Read and handle the command line options.
-  def handle_options
-    $verbose = false
-    $pull_gems = false
-    opts = GetoptLong.new(*command_line_options)
-    opts.each { |opt, value| do_option(opt, value) }
-  end
-
-  # Run the +rake+ application.
-  def run
-    handle_options
-
-    unless $rake_root_fiber
-      require 'fiber'
-      $rake_root_fiber = Fiber.current
-    end
-
-    begin
-      here = Dir.pwd
-      while ! have_rakefile
-        Dir.chdir("..")
-        if Dir.pwd == here || @nosearch
-          fail "No Rakefile found (looking for: #{RAKEFILES.join(', ')})"
-        end
-        here = Dir.pwd
-      end
-      root_tasks = []
-      ARGV.each do |task_name|
-        if /^(\w+)=(.*)/.match(task_name)
-          ENV[$1] = $2
-        else
-          root_tasks << task_name
-        end
-      end
-      puts "(in #{Dir.pwd})"
-      $rakefile = @rakefile
-      load @rakefile
-      if $show_tasks
-        display_tasks
-      else
-        root_tasks.push("default") if root_tasks.empty?
-        # revese tasks for popping
-        root_tasks.reverse!
-
-        tasks = []
-        until root_tasks.empty?
-          root_name = root_tasks.pop
-          tasks << root_name
-          until tasks.empty?
-            task_name = tasks.pop
-            t = MiniRake::Task[task_name]
-            f = t.invoke
-
-            # append additional tasks to task queue
-            if f.kind_of?(Array)
-              tasks.push(*f)
-              tasks.uniq!
-            end
-
-            unless f.kind_of? Fiber
-              tasks.insert 0, task_name unless t.done?
-              if root_name == task_name
-                wait_process
-              end
-              next
-            end
-
-            wait_process while $rake_fiber_table.size >= $rake_jobs
-
-            f.transfer
-          end
-        end
-
-        wait_process until $rake_fiber_table.empty?
-      end
-    rescue Exception => e
-      begin
-        $rake_failed << e
-        wait_process until $rake_fiber_table.empty?
-      rescue Exception => next_e
-        e = next_e
-        retry
-      end
-    end
-
-    return if $rake_failed.empty?
-
-    puts "rake aborted!"
-    $rake_failed.each do |ex|
-      puts ex.message
-      if $trace || $verbose
-        puts ex.backtrace.join("\n")
-      else
-        puts ex.backtrace.find {|str| str =~ /#{@rakefile}/ } || ""
-      end
-    end
-    exit 1
-  end
-
-  def wait_process(count = 0)
-    dur = [0.0001 * (10 ** count), 1].min
-    sleep dur
-
-    exited = []
-    $rake_fiber_table.each do |pid, v|
-      exited << pid unless v[:process_waiter].alive?
-    end
-
-    exited.each do |pid|
-      ent = $rake_fiber_table.delete pid
-      st = ent[:process_waiter].value
-
-      # ignore process that isn't created by `sh` method
-      return if ent.nil?
-
-      if st.exitstatus != 0
-        raise "Command Failed: [#{ent[:command]}]"
-      end
-
-      fail 'task scheduling bug!' if $rake_fiber_table.size >= $rake_jobs
-
-      ent[:fiber].transfer
-    end
-
-    wait_process(count + 1) if !$rake_fiber_table.empty? && exited.empty?
-  end
-
-end
-
-if __FILE__ == $0 then
-  RakeApp.new.run
-end
+#! /usr/bin/env ruby
+exec "rake", *ARGV

mrbgems/default.gembox

@@ -71,6 +71,10 @@ MRuby::GemBox.new do |conf|
   # Use toplevel object (main) methods extension
   conf.gem :core => "mruby-toplevel-ext"
 
+  # Use Rational/Complex numbers
+  conf.gem :core => "mruby-rational"
+  conf.gem :core => "mruby-complex"
+
   # Generate mirb command
   conf.gem :core => "mruby-bin-mirb"
 
@@ -86,6 +90,12 @@ MRuby::GemBox.new do |conf|
   # Use class/module extension
   conf.gem :core => "mruby-class-ext"
 
+  # Use Method/UnboundMethod class
+  conf.gem :core => "mruby-method"
+
+  # Use eval()
+  conf.gem :core => "mruby-eval"
+
   # Use mruby-compiler to build other mrbgems
   conf.gem :core => "mruby-compiler"
 end

mrbgems/mruby-array-ext/mrbgem.rake

@@ -2,5 +2,4 @@ MRuby::Gem::Specification.new('mruby-array-ext') do |spec|
   spec.license = 'MIT'
   spec.author  = 'mruby developers'
   spec.summary = 'Array class extension'
-  spec.add_test_dependency 'mruby-enumerator', core: 'mruby-enumerator'
 end

mrbgems/mruby-array-ext/mrblib/array.rb

@@ -88,6 +88,22 @@ class Array
     array
   end
 
+  ##
+  # call-seq:
+  #    ary.difference(other_ary1, other_ary2, ...)   -> new_ary
+  #
+  # Returns a new array that is a copy of the original array, removing all
+  # occurrences of any item that also appear in +other_ary+. The order is
+  # preserved from the original array.
+  #
+  def difference(*args)
+    ary = self
+    args.each do |x|
+      ary = ary - x
+    end
+    ary
+  end
+
   ##
   # call-seq:
   #    ary | other_ary     -> new_ary
@@ -157,6 +173,24 @@ class Array
     array
   end
 
+  ##
+  # call-seq:
+  #    ary.intersection(other_ary,...)  -> new_ary
+  #
+  # Set Intersection---Returns a new array containing elements common to
+  # this array and <i>other_ary</i>s, removing duplicates. The order is
+  # preserved from the original array.
+  #
+  #    [1, 2, 3].intersection([3, 4, 1], [1, 3, 5])  #=> [1, 3]
+  #
+  def intersection(*args)
+    ary = self
+    args.each do |x|
+      ary = ary & x
+    end
+    ary
+  end
+
   ##
   # call-seq:
   #    ary.flatten -> new_ary
@@ -652,37 +686,6 @@ class Array
     satisfied ? low : nil
   end
 
-  ##
-  #  call-seq:
-  #     ary.delete_if { |item| block }  -> ary
-  #     ary.delete_if                   -> Enumerator
-  #
-  #  Deletes every element of +self+ for which block evaluates to +true+.
-  #
-  #  The array is changed instantly every time the block is called, not after
-  #  the iteration is over.
-  #
-  #  See also Array#reject!
-  #
-  #  If no block is given, an Enumerator is returned instead.
-  #
-  #     scores = [ 97, 42, 75 ]
-  #     scores.delete_if {|score| score < 80 }   #=> [97]
-
-  def delete_if(&block)
-    return to_enum :delete_if unless block
-
-    idx = 0
-    while idx < self.size do
-      if block.call(self[idx])
-        self.delete_at(idx)
-      else
-        idx += 1
-      end
-    end
-    self
-  end
-
   ##
   #  call-seq:
   #     ary.keep_if { |item| block } -> ary
@@ -815,12 +818,11 @@ class Array
   #  a.permutation(0).to_a #=> [[]] # one permutation of length 0
   #  a.permutation(4).to_a #=> []   # no permutations of length 4
   def permutation(n=self.size, &block)
-    size = self.size
     return to_enum(:permutation, n) unless block
-    return if n > size
+    size = self.size
     if n == 0
-       yield []
-    else
+      yield []
+    elsif 0 < n && n <= size
       i = 0
       while i<size
         result = [self[i]]
@@ -835,6 +837,7 @@ class Array
         i += 1
       end
     end
+    self
   end
 
   ##
@@ -861,9 +864,8 @@ class Array
   #    a.combination(5).to_a  #=> []   # no combinations of length 5
 
   def combination(n, &block)
-    size = self.size
     return to_enum(:combination, n) unless block
-    return if n > size
+    size = self.size
     if n == 0
        yield []
     elsif n == 1
@@ -872,7 +874,7 @@ class Array
         yield [self[i]]
         i += 1
       end
-    else
+    elsif n <= size
       i = 0
       while i<size
         result = [self[i]]
@@ -882,6 +884,7 @@ class Array
         i += 1
       end
     end
+    self
   end
 
   ##
@@ -903,8 +906,8 @@ class Array
     column_count = nil
     self.each do |row|
       raise TypeError unless row.is_a?(Array)
-      column_count ||= row.count
-      raise IndexError, 'element size differs' unless column_count == row.count
+      column_count ||= row.size
+      raise IndexError, 'element size differs' unless column_count == row.size
     end
 
     Array.new(column_count) do |column_index|
@@ -936,4 +939,8 @@ class Array
     end
     h
   end
+
+  alias append push
+  alias prepend unshift
+  alias filter! select!
 end

mrbgems/mruby-array-ext/src/array.c

@@ -28,9 +28,8 @@ static mrb_value
 mrb_ary_assoc(mrb_state *mrb, mrb_value ary)
 {
   mrb_int i;
-  mrb_value v, k;
-
-  mrb_get_args(mrb, "o", &k);
+  mrb_value v;
+  mrb_value k = mrb_get_arg1(mrb);
 
   for (i = 0; i < RARRAY_LEN(ary); ++i) {
     v = mrb_check_array_type(mrb, RARRAY_PTR(ary)[i]);
@@ -59,13 +58,12 @@ static mrb_value
 mrb_ary_rassoc(mrb_state *mrb, mrb_value ary)
 {
   mrb_int i;
-  mrb_value v, value;
-
-  mrb_get_args(mrb, "o", &value);
+  mrb_value v;
+  mrb_value value = mrb_get_arg1(mrb);
 
   for (i = 0; i < RARRAY_LEN(ary); ++i) {
     v = RARRAY_PTR(ary)[i];
-    if (mrb_type(v) == MRB_TT_ARRAY &&
+    if (mrb_array_p(v) &&
         RARRAY_LEN(v) > 1 &&
         mrb_equal(mrb, RARRAY_PTR(v)[1], value))
       return v;
@@ -140,12 +138,11 @@ mrb_ary_slice_bang(mrb_state *mrb, mrb_value self)
   mrb_ary_modify(mrb, a);
 
   if (mrb_get_argc(mrb) == 1) {
-    mrb_value index;
+    mrb_value index = mrb_get_arg1(mrb);
 
-    mrb_get_args(mrb, "o|i", &index, &len);
     switch (mrb_type(index)) {
     case MRB_TT_RANGE:
-      if (mrb_range_beg_len(mrb, index, &i, &len, ARY_LEN(a), TRUE) == 1) {
+      if (mrb_range_beg_len(mrb, index, &i, &len, ARY_LEN(a), TRUE) == MRB_RANGE_OK) {
         goto delete_pos_len;
       }
       else {
@@ -194,7 +191,7 @@ mrb_mruby_array_ext_gem_init(mrb_state* mrb)
   mrb_define_method(mrb, a, "at",     mrb_ary_at,     MRB_ARGS_REQ(1));
   mrb_define_method(mrb, a, "rassoc", mrb_ary_rassoc, MRB_ARGS_REQ(1));
   mrb_define_method(mrb, a, "values_at", mrb_ary_values_at, MRB_ARGS_ANY());
-  mrb_define_method(mrb, a, "slice!", mrb_ary_slice_bang,   MRB_ARGS_ANY());
+  mrb_define_method(mrb, a, "slice!", mrb_ary_slice_bang,   MRB_ARGS_ARG(1,1));
 }
 
 void

mrbgems/mruby-array-ext/test/array.rb

@@ -1,6 +1,23 @@
 ##
 # Array(Ext) Test
 
+def assert_permutation_combination(exp, receiver, meth, *args)
+  act = []
+  ret = receiver.__send__(meth, *args) { |v| act << v }
+  assert "assert_#{meth}" do
+    assert_equal(exp, act.sort)
+    assert_same(receiver, ret)
+  end
+end
+
+def assert_permutation(exp, receiver, *args)
+  assert_permutation_combination(exp, receiver, :permutation, *args)
+end
+
+def assert_combination(exp, receiver, *args)
+  assert_permutation_combination(exp, receiver, :combination, *args)
+end
+
 assert("Array#assoc") do
   s1 = [ "colors", "red", "blue", "green" ]
   s2 = [ "letters", "a", "b", "c" ]
@@ -76,6 +93,14 @@ assert("Array#union") do
   assert_equal [1, 2, 3, 4, 5], a.union(b,c)
 end
 
+assert("Array#difference") do
+  a = [1, 2, 3, 1, 6, 7]
+  b = [1, 4, 6]
+  c = [1, 5, 7]
+
+  assert_equal [2, 3], a.difference(b,c)
+end
+
 assert("Array#&") do
   a = [1, 2, 3, 1]
   b = [1, 4]
@@ -86,6 +111,14 @@ assert("Array#&") do
   assert_equal [1, 2, 3, 1], a
 end
 
+assert("Array#intersection") do
+  a = [1, 2, 3, 1, 8, 6, 7, 8]
+  b = [1, 4, 6, 8]
+  c = [1, 5, 7, 8]
+
+  assert_equal [1, 8], a.intersection(b,c)
+end
+
 assert("Array#flatten") do
   assert_equal [1, 2, "3", {4=>5}, :'6'],    [1, 2, "3", {4=>5}, :'6'].flatten
   assert_equal [1, 2, 3, 4, 5, 6], [1, 2,    [3, 4, 5], 6].flatten
@@ -162,12 +195,6 @@ assert("Array#reverse_each") do
     b << i
   end
   assert_equal [ "d", "c", "b", "a" ], b
-
-  if Object.const_defined?(:Enumerator)
-    assert_equal [ "d", "c", "b", "a" ], a.reverse_each.to_a
-  else
-    true
-  end
 end
 
 assert("Array#rotate") do
@@ -268,22 +295,9 @@ assert("Array#bsearch") do
   end
 end
 
-assert("Array#bsearch_index") do
-  # tested through Array#bsearch
-end
-
-assert("Array#delete_if") do
-  a = [1, 2, 3, 4, 5]
-  assert_equal [1, 2, 3, 4, 5], a.delete_if { false }
-  assert_equal [1, 2, 3, 4, 5], a
-
-  a = [1, 2, 3, 4, 5]
-  assert_equal [], a.delete_if { true }
-  assert_equal [], a
-
-  a = [ 1, 2, 3, 4, 5 ]
-  assert_equal [1, 2, 3], a.delete_if { |val| val > 3 }
-end
+# tested through Array#bsearch
+#assert("Array#bsearch_index") do
+#end
 
 assert("Array#keep_if") do
   a = [1, 2, 3, 4, 5]
@@ -369,30 +383,24 @@ end
 
 assert("Array#permutation") do
   a = [1, 2, 3]
-  assert_equal([[1,2,3],[1,3,2],[2,1,3],[2,3,1],[3,1,2],[3,2,1]],
-               a.permutation.to_a)
-  assert_equal([[1],[2],[3]],
-               a.permutation(1).to_a)
-  assert_equal([[1,2],[1,3],[2,1],[2,3],[3,1],[3,2]],
-               a.permutation(2).to_a)
-  assert_equal([[1,2,3],[1,3,2],[2,1,3],[2,3,1],[3,1,2],[3,2,1]],
-               a.permutation(3).to_a)
-  assert_equal([[]], a.permutation(0).to_a)
-  assert_equal([], a.permutation(4).to_a)
+  assert_permutation([[1,2,3],[1,3,2],[2,1,3],[2,3,1],[3,1,2],[3,2,1]], a)
+  assert_permutation([[1],[2],[3]], a, 1)
+  assert_permutation([[1,2],[1,3],[2,1],[2,3],[3,1],[3,2]], a, 2)
+  assert_permutation([[1,2,3],[1,3,2],[2,1,3],[2,3,1],[3,1,2],[3,2,1]], a, 3)
+  assert_permutation([[]], a, 0)
+  assert_permutation([], a, 4)
+  assert_permutation([], a, -1)
 end
 
 assert("Array#combination") do
   a = [1, 2, 3, 4]
-  assert_equal([[1],[2],[3],[4]],
-               a.combination(1).to_a)
-  assert_equal([[1,2],[1,3],[1,4],[2,3],[2,4],[3,4]],
-               a.combination(2).to_a)
-  assert_equal([[1,2,3],[1,2,4],[1,3,4],[2,3,4]],
-               a.combination(3).to_a)
-  assert_equal([[1,2,3,4]],
-               a.combination(4).to_a)
-  assert_equal([[]], a.combination(0).to_a)
-  assert_equal([], a.combination(5).to_a)
+  assert_combination([[1],[2],[3],[4]], a, 1)
+  assert_combination([[1,2],[1,3],[1,4],[2,3],[2,4],[3,4]], a, 2)
+  assert_combination([[1,2,3],[1,2,4],[1,3,4],[2,3,4]], a, 3)
+  assert_combination([[1,2,3,4]], a, 4)
+  assert_combination([[]], a, 0)
+  assert_combination([], a, 5)
+  assert_combination([], a, -1)
 end
 
 assert('Array#transpose') do

mrbgems/mruby-bin-config/mrbgem.rake

@@ -5,19 +5,22 @@ unless MRuby::Build.current.kind_of?(MRuby::CrossBuild)
     spec.author  = 'mruby developers'
     spec.summary = "#{name} command"
 
+    mruby_config_dir = "#{build.build_dir}/bin"
     mruby_config = name + (ENV['OS'] == 'Windows_NT' ? '.bat' : '')
-    mruby_config_path = "#{build.build_dir}/bin/#{mruby_config}"
+    mruby_config_path = "#{mruby_config_dir}/#{mruby_config}"
     make_cfg = "#{build.build_dir}/lib/libmruby.flags.mak"
     tmplt_path = "#{__dir__}/#{mruby_config}"
     build.bins << mruby_config
 
-    file mruby_config_path => [make_cfg, tmplt_path] do |t|
+    directory mruby_config_dir
+
+    file mruby_config_path => [mruby_config_dir, make_cfg, tmplt_path] do |t|
       config = Hash[File.readlines(make_cfg).map!(&:chomp).map! {|l|
         l.gsub('\\"', '"').split(' = ', 2).map! {|s| s.sub(/^(?=.)/, 'echo ')}
       }]
       tmplt = File.read(tmplt_path)
       File.write(t.name, tmplt.gsub(/(#{Regexp.union(*config.keys)})\b/, config))
-      FileUtils.chmod(0755, t.name)
+      chmod(0755, t.name)
     end
   end
 end

mrbgems/mruby-bin-debugger/bintest/print.rb

@@ -1,9 +1,10 @@
 require 'open3'
 require 'tempfile'
+require 'strscan'
 
 class BinTest_MrubyBinDebugger
-  @debug1=false
-  @debug2=true
+#  @debug1=false
+#  @debug2=true
   def self.test(rubysource, testcase)
     script, bin = Tempfile.new(['test', '.rb']), Tempfile.new(['test', '.mrb'])
 
@@ -19,10 +20,20 @@ class BinTest_MrubyBinDebugger
 
     stdin_data = testcase.map{|t| t[:cmd]}.join("\n") << "\n"
 
+    prompt = /^\(#{Regexp.escape(script.path)}:\d+\) /
     ["bin/mrdb #{script.path}","bin/mrdb -b #{bin.path}"].each do |cmd|
       o, s = Open3.capture2(cmd, :stdin_data => stdin_data)
+      scanner = StringScanner.new(o)
+      scanner.skip_until(prompt)
+      testcase.each do |tc|
+        exp = tc[:exp]
+        if exp
+          act = scanner.scan_until(/\n/)
+          break unless assert_operator act, :start_with?, exp
+        end
+        scanner.skip_until(prompt)
+      end
 
-      exp_vals = testcase.map{|t| t.fetch(:exp, nil)}
 =begin
 if @debug1
   o.split("\n").each_with_index do |i,actual|
@@ -41,14 +52,6 @@ end
         assert_true actual.include?(exp) unless exp.nil?
       end
 =end
-      idx = 0
-      exp_vals.each do |exp|
-        next if exp.nil?
-        idx = o.index(exp, idx)
-        assert_false idx.nil?
-        break unless idx
-        idx += 1
-      end
     end
   end
 end
@@ -90,8 +93,8 @@ assert('mruby-bin-debugger(print) error') do
 
   # test case
   tc = []
-  tc << {:cmd=>"p (1+2",  :exp=>'$1 = SyntaxError'}
-  tc << {:cmd=>"p bar",   :exp=>'$2 = (eval):2: undefined method'}
+  tc << {:cmd=>"p (1+2",  :exp=>'$1 = line 1: syntax error'}
+  tc << {:cmd=>"p bar",   :exp=>'$2 = undefined method'}
 
   BinTest_MrubyBinDebugger.test(src, tc)
 end
@@ -588,7 +591,7 @@ SRC
   tc << {:cmd=>'p foo=[foo,bar,baz]', :exp=>'$2 = ["foo", "bar", "baz"]'}
 
   tc << {:cmd=>'p undefined=-1',      :exp=>'$3 = -1'}
-  tc << {:cmd=>'p "#{undefined}"',    :exp=>'$4 = (eval):2: undefined method'}
+  tc << {:cmd=>'p "#{undefined}"',    :exp=>'$4 = undefined method'}
 
   BinTest_MrubyBinDebugger.test(src, tc)
 end
@@ -626,7 +629,7 @@ SRC
   tc << {:cmd=>'p [a,b]',           :exp=>'$13 = [20, 10]'}
 
   tc << {:cmd=>'p undefined=-1',    :exp=>'$14 = -1'}
-  tc << {:cmd=>'p "#{undefined}"',  :exp=>'$15 = (eval):2: undefined method'}
+  tc << {:cmd=>'p "#{undefined}"',  :exp=>'$15 = undefined method'}
 
   BinTest_MrubyBinDebugger.test(src, tc)
 end
@@ -694,8 +697,7 @@ SRC
   tc << {:cmd=>'p [a,b]',           :exp=>'$13 = [20, 10]'}
 
   tc << {:cmd=>'p undefined=-1',    :exp=>'$14 = -1'}
-  tc << {:cmd=>'p "#{undefined}"',  :exp=>'$15 = (eval):2: undefined method'}
+  tc << {:cmd=>'p "#{undefined}"',  :exp=>'$15 = undefined method'}
 
   BinTest_MrubyBinDebugger.test(src, tc)
 end
-

mrbgems/mruby-bin-debugger/tools/mrdb/apibreak.c

@@ -95,7 +95,7 @@ check_file_lineno(mrb_state *mrb, struct mrb_irep *irep, const char *file, uint1
   for (f_idx = 0; f_idx < irep->debug_info->flen; ++f_idx) {
     const char *filename;
     info_file = irep->debug_info->files[f_idx];
-    filename = mrb_sym2name_len(mrb, info_file->filename_sym, NULL);
+    filename = mrb_sym_name_len(mrb, info_file->filename_sym, NULL);
     if (!strcmp(filename, file)) {
       result = MRB_DEBUG_BP_FILE_OK;
 
@@ -126,7 +126,7 @@ compare_break_method(mrb_state *mrb, mrb_debug_breakpoint *bp, struct RClass *cl
   mrb_debug_methodpoint *method_p;
   mrb_bool is_defined;
 
-  method_name = mrb_sym2name(mrb, method_sym);
+  method_name = mrb_sym_name(mrb, method_sym);
 
   method_p = &bp->point.methodpoint;
   if (strcmp(method_p->method_name, method_name) == 0) {
@@ -428,7 +428,7 @@ mrb_debug_disable_break_all(mrb_state *mrb, mrb_debug_context *dbg)
 }
 
 static mrb_bool
-check_start_pc_for_line(mrb_state *mrb, mrb_irep *irep, mrb_code *pc, uint16_t line)
+check_start_pc_for_line(mrb_state *mrb, mrb_irep *irep, const mrb_code *pc, uint16_t line)
 {
   if (pc > irep->iseq) {
     if (line == mrb_debug_get_line(mrb, irep, pc - irep->iseq - 1)) {

mrbgems/mruby-bin-debugger/tools/mrdb/apiprint.c

@@ -33,7 +33,7 @@ mrdb_check_syntax(mrb_state *mrb, mrb_debug_context *dbg, const char *expr, size
 mrb_value
 mrb_debug_eval(mrb_state *mrb, mrb_debug_context *dbg, const char *expr, size_t len, mrb_bool *exc, int direct_eval)
 {
-  void (*tmp)(struct mrb_state *, struct mrb_irep *, mrb_code *, mrb_value *);
+  void (*tmp)(struct mrb_state *, struct mrb_irep *, const mrb_code *, mrb_value *);
   mrb_value ruby_code;
   mrb_value s;
   mrb_value v;
@@ -74,7 +74,7 @@ mrb_debug_eval(mrb_state *mrb, mrb_debug_context *dbg, const char *expr, size_t
     *exc = mrb_obj_is_kind_of(mrb, v, mrb->eException_class);
   }
 
-  s = mrb_funcall(mrb, v, "inspect", 0);
+  s = mrb_inspect(mrb, v);
 
   /* enable code_fetch_hook */
   mrb->code_fetch_hook = tmp;

mrbgems/mruby-bin-debugger/tools/mrdb/cmdprint.c

@@ -18,7 +18,6 @@ dbgcmd_print(mrb_state *mrb, mrdb_state *mrdb)
 {
   mrb_value expr;
   mrb_value result;
-  mrb_value s;
   uint8_t wcnt;
   int ai;
 
@@ -39,8 +38,9 @@ dbgcmd_print(mrb_state *mrb, mrdb_state *mrdb)
   result = mrb_debug_eval(mrb, mrdb->dbg, RSTRING_PTR(expr), RSTRING_LEN(expr), NULL, 0);
 
   /* $print_no = result */
-  s = mrb_str_cat_lit(mrb, result, "\0");
-  printf("$%lu = %s\n", (unsigned long)mrdb->print_no++, RSTRING_PTR(s));
+  printf("$%lu = ", (unsigned long)mrdb->print_no++);
+  fwrite(RSTRING_PTR(result), RSTRING_LEN(result), 1, stdout);
+  putc('\n', stdout);
 
   if (mrdb->print_no == 0) {
     mrdb->print_no = 1;

mrbgems/mruby-bin-debugger/tools/mrdb/mrdb.c

@@ -5,7 +5,6 @@
 
 #include <stdlib.h>
 #include <string.h>
-#include <stdio.h>
 #include <ctype.h>
 
 #include <mruby.h>
@@ -505,7 +504,7 @@ get_and_parse_command(mrb_state *mrb, mrdb_state *mrdb)
 }
 
 static int32_t
-check_method_breakpoint(mrb_state *mrb, mrb_irep *irep, mrb_code *pc, mrb_value *regs)
+check_method_breakpoint(mrb_state *mrb, mrb_irep *irep, const mrb_code *pc, mrb_value *regs)
 {
   struct RClass* c;
   mrb_sym sym;
@@ -546,7 +545,7 @@ check_method_breakpoint(mrb_state *mrb, mrb_irep *irep, mrb_code *pc, mrb_value
 }
 
 static void
-mrb_code_fetch_hook(mrb_state *mrb, mrb_irep *irep, mrb_code *pc, mrb_value *regs)
+mrb_code_fetch_hook(mrb_state *mrb, mrb_irep *irep, const mrb_code *pc, mrb_value *regs)
 {
   const char *file;
   int32_t line;

mrbgems/mruby-bin-debugger/tools/mrdb/mrdb.h

@@ -105,7 +105,7 @@ typedef struct mrb_debug_breakpoint {
 typedef struct mrb_debug_context {
   struct mrb_irep *root_irep;
   struct mrb_irep *irep;
-  mrb_code *pc;
+  const mrb_code *pc;
   mrb_value *regs;
 
   const char *prvfile;

mrbgems/mruby-bin-debugger/tools/mrdb/mrdbconf.h

@@ -6,6 +6,14 @@
 #ifndef MRDBCONF_H
 #define MRDBCONF_H
 
+#ifndef MRB_ENABLE_DEBUG_HOOK
+# error mruby-bin-debugger need 'MRB_ENABLE_DEBUG_HOOK' configuration in your 'build_config.rb'
+#endif
+
+#ifdef MRB_DISABLE_STDIO
+# error mruby-bin-debugger conflicts 'MRB_DISABLE_STDIO' configuration in your 'build_config.rb'
+#endif
+
 /* configuration options: */
 /* maximum size for command buffer */
 #define MAX_COMMAND_LINE 1024

mrbgems/mruby-bin-mirb/tools/mirb/mirb.c

@@ -7,6 +7,11 @@
 */
 
 #include <mruby.h>
+
+#ifdef MRB_DISABLE_STDIO
+# error mruby-bin-mirb conflicts 'MRB_DISABLE_STDIO' configuration in your 'build_config.rb'
+#endif
+
 #include <mruby/array.h>
 #include <mruby/proc.h>
 #include <mruby/compile.h>
@@ -17,7 +22,6 @@
 
 #include <stdlib.h>
 #include <string.h>
-#include <stdio.h>
 #include <ctype.h>
 
 #include <signal.h>
@@ -240,7 +244,7 @@ usage(const char *name)
   };
   const char *const *p = usage_msg;
 
-  printf("Usage: %s [switches]\n", name);
+  printf("Usage: %s [switches] [programfile] [arguments]\n", name);
   while (*p)
     printf("  %s\n", *p++);
 }
@@ -406,6 +410,26 @@ ctrl_c_handler(int signo)
 }
 #endif
 
+#ifndef DISABLE_MIRB_UNDERSCORE
+void decl_lv_underscore(mrb_state *mrb, mrbc_context *cxt)
+{
+  struct RProc *proc;
+  struct mrb_parser_state *parser;
+
+  parser = mrb_parse_string(mrb, "_=nil", cxt);
+  if (parser == NULL) {
+    fputs("create parser state error\n", stderr);
+    mrb_close(mrb);
+    exit(EXIT_FAILURE);
+  }
+
+  proc = mrb_generate_code(mrb, parser);
+  mrb_vm_run(mrb, proc, mrb_top_self(mrb), 0);
+
+  mrb_parser_free(parser);
+}
+#endif
+
 int
 main(int argc, char **argv)
 {
@@ -471,6 +495,10 @@ main(int argc, char **argv)
 
   cxt = mrbc_context_new(mrb);
 
+#ifndef DISABLE_MIRB_UNDERSCORE
+  decl_lv_underscore(mrb, cxt);
+#endif
+
   /* Load libraries */
   for (i = 0; i < args.libc; i++) {
     FILE *lfp = fopen(args.libv[i], "r");
@@ -621,8 +649,8 @@ main(int argc, char **argv)
         /* adjust stack length of toplevel environment */
         if (mrb->c->cibase->env) {
           struct REnv *e = mrb->c->cibase->env;
-          if (e && MRB_ENV_STACK_LEN(e) < proc->body.irep->nlocals) {
-            MRB_ENV_SET_STACK_LEN(e, proc->body.irep->nlocals);
+          if (e && MRB_ENV_LEN(e) < proc->body.irep->nlocals) {
+            MRB_ENV_SET_LEN(e, proc->body.irep->nlocals);
           }
         }
         /* pass a proc for evaluation */
@@ -643,6 +671,9 @@ main(int argc, char **argv)
             result = mrb_any_to_s(mrb, result);
           }
           p(mrb, result, 1);
+#ifndef DISABLE_MIRB_UNDERSCORE
+          *(mrb->c->stack + 1) = result;
+#endif
         }
       }
       ruby_code[0] = '\0';

mrbgems/mruby-bin-mrbc/tools/mrbc/mrbc.c

@@ -1,7 +1,11 @@
-#include <stdio.h>
+#include <mruby.h>
+
+#ifdef MRB_DISABLE_STDIO
+# error mruby-bin-mrbc conflicts 'MRB_DISABLE_STDIO' configuration in your 'build_config.rb'
+#endif
+
 #include <stdlib.h>
 #include <string.h>
-#include <mruby.h>
 #include <mruby/compile.h>
 #include <mruby/dump.h>
 #include <mruby/proc.h>
@@ -32,8 +36,6 @@ usage(const char *name)
   "-v           print version number, then turn on verbose mode",
   "-g           produce debugging information",
   "-B<symbol>   binary <symbol> output in C language format",
-  "-e           generate little endian iseq data",
-  "-E           generate big endian iseq data",
   "--remove-lv  remove local variables",
   "--verbose    run at verbose mode",
   "--version    print the version",
@@ -50,19 +52,26 @@ usage(const char *name)
 static char *
 get_outfilename(mrb_state *mrb, char *infile, const char *ext)
 {
-  size_t infilelen;
-  size_t extlen;
+  size_t ilen, flen, elen;
   char *outfile;
-  char *p;
+  char *p = NULL;
 
-  infilelen = strlen(infile);
-  extlen = strlen(ext);
-  outfile = (char*)mrb_malloc(mrb, infilelen + extlen + 1);
-  memcpy(outfile, infile, infilelen + 1);
+  ilen = strlen(infile);
+  flen = ilen;
   if (*ext) {
-    if ((p = strrchr(outfile, '.')) == NULL)
-      p = outfile + infilelen;
-    memcpy(p, ext, extlen + 1);
+    elen = strlen(ext);
+    if ((p = strrchr(infile, '.'))) {
+      ilen = p - infile;
+    }
+    flen += elen;
+  }
+  else {
+    flen = ilen;
+  }
+  outfile = (char*)mrb_malloc(mrb, flen+1);
+  strncpy(outfile, infile, ilen+1);
+  if (p) {
+    strncpy(outfile+ilen, ext, elen+1);
   }
 
   return outfile;
@@ -71,7 +80,6 @@ get_outfilename(mrb_state *mrb, char *infile, const char *ext)
 static int
 parse_args(mrb_state *mrb, int argc, char **argv, struct mrbc_args *args)
 {
-  char *outfile = NULL;
   static const struct mrbc_args args_zero = { 0 };
   int i;
 
@@ -86,7 +94,7 @@ parse_args(mrb_state *mrb, int argc, char **argv, struct mrbc_args *args)
       case 'o':
         if (args->outfile) {
           fprintf(stderr, "%s: an output file is already specified. (%s)\n",
-                  args->prog, outfile);
+                  args->prog, args->outfile);
           return -1;
         }
         if (argv[i][2] == '\0' && argv[i+1]) {
@@ -121,10 +129,8 @@ parse_args(mrb_state *mrb, int argc, char **argv, struct mrbc_args *args)
         args->flags |= DUMP_DEBUG_INFO;
         break;
       case 'E':
-        args->flags = DUMP_ENDIAN_BIG | (args->flags & ~DUMP_ENDIAN_MASK);
-        break;
       case 'e':
-        args->flags = DUMP_ENDIAN_LIL | (args->flags & ~DUMP_ENDIAN_MASK);
+        fprintf(stderr, "%s: -e/-E option no longer needed.\n", args->prog);
         break;
       case 'h':
         return -1;
@@ -157,10 +163,6 @@ parse_args(mrb_state *mrb, int argc, char **argv, struct mrbc_args *args)
       break;
     }
   }
-  if (args->verbose && args->initname && (args->flags & DUMP_ENDIAN_MASK) == 0) {
-    fprintf(stderr, "%s: generating %s endian C file. specify -e/-E for cross compiling.\n",
-            args->prog, bigendian_p() ? "big" : "little");
-  }
   return i;
 }
 
@@ -184,7 +186,7 @@ partial_hook(struct mrb_parser_state *p)
     return -1;
   }
   fn = args->argv[args->idx++];
-  p->f = fopen(fn, "r");
+  p->f = fopen(fn, "rb");
   if (p->f == NULL) {
     fprintf(stderr, "%s: cannot open program file. (%s)\n", args->prog, fn);
     return -1;
@@ -211,7 +213,7 @@ load_file(mrb_state *mrb, struct mrbc_args *args)
   }
   else {
     need_close = TRUE;
-    if ((infile = fopen(input, "r")) == NULL) {
+    if ((infile = fopen(input, "rb")) == NULL) {
       fprintf(stderr, "%s: cannot open program file. (%s)\n", args->prog, input);
       return mrb_nil_value();
     }

mrbgems/mruby-bin-mruby/bintest/mruby.rb

@@ -1,10 +1,18 @@
 require 'tempfile'
+require 'open3'
+
+def assert_mruby(exp_out, exp_err, exp_success, args)
+  out, err, stat = Open3.capture3(cmd("mruby"), *args)
+  assert "assert_mruby" do
+    assert_operator(exp_out, :===, out, "standard output")
+    assert_operator(exp_err, :===, err, "standard error")
+    assert_equal(exp_success, stat.success?, "exit success?")
+  end
+end
 
 assert('regression for #1564') do
-  o = `#{cmd('mruby')} -e #{shellquote('<<')} 2>&1`
-  assert_include o, "-e:1:2: syntax error"
-  o = `#{cmd('mruby')} -e #{shellquote('<<-')} 2>&1`
-  assert_include o, "-e:1:3: syntax error"
+  assert_mruby("", /\A-e:1:2: syntax error, .*\n\z/, false, %w[-e <<])
+  assert_mruby("", /\A-e:1:3: syntax error, .*\n\z/, false, %w[-e <<-])
 end
 
 assert('regression for #1572') do
@@ -31,6 +39,11 @@ assert '$0 value' do
   assert_equal '"-e"', `#{cmd('mruby')} -e #{shellquote('p $0')}`.chomp
 end
 
+assert 'ARGV value' do
+  assert_mruby(%{["ab", "cde"]\n}, "", true, %w[-e p(ARGV) ab cde])
+  assert_mruby("[]\n", "", true, %w[-e p(ARGV)])
+end
+
 assert('float literal') do
   script, bin = Tempfile.new('test.rb'), Tempfile.new('test.mrb')
   File.write script.path, 'p [3.21, 2e308.infinite?, -2e308.infinite?]'
@@ -66,11 +79,22 @@ RUBY
   assert_equal 0, $?.exitstatus
 end
 
+assert('mruby -c option') do
+  assert_mruby("Syntax OK\n", "", true, ["-c", "-e", "p 1"])
+  assert_mruby("", /\A-e:1:7: syntax error, .*\n\z/, false, ["-c", "-e", "p 1; 1."])
+end
+
 assert('mruby -d option') do
-  o = `#{cmd('mruby')} -e #{shellquote('p $DEBUG')}`
-  assert_equal "false\n", o
-  o = `#{cmd('mruby')} -d -e #{shellquote('p $DEBUG')}`
-  assert_equal "true\n", o
+  assert_mruby("false\n", "", true, ["-e", "p $DEBUG"])
+  assert_mruby("true\n", "", true, ["-dep $DEBUG"])
+end
+
+assert('mruby -e option (no code specified)') do
+  assert_mruby("", /\A.*: No code specified for -e\n\z/, false, %w[-e])
+end
+
+assert('mruby -h option') do
+  assert_mruby(/\AUsage: #{Regexp.escape cmd("mruby")} .*/m, "", true, %w[-h])
 end
 
 assert('mruby -r option') do
@@ -95,3 +119,46 @@ EOS
   assert_equal 'hogeClass', `#{cmd('mruby')} -r #{lib.path} -r #{script.path} -e #{shellquote('print Hoge.class')}`
   assert_equal 0, $?.exitstatus
 end
+
+assert('mruby -r option (no library specified)') do
+  assert_mruby("", /\A.*: No library specified for -r\n\z/, false, %w[-r])
+end
+
+assert('mruby -r option (file not found)') do
+  assert_mruby("", /\A.*: Cannot open library file: .*\n\z/, false, %w[-r _no_exists_])
+end
+
+assert('mruby -v option') do
+  ver_re = '\Amruby \d+\.\d+\.\d+ \(\d+-\d+-\d+\)\n'
+  assert_mruby(/#{ver_re}\z/, "", true, %w[-v])
+  assert_mruby(/#{ver_re}^[^\n]*NODE.*\n:end\n\z/m, "", true, %w[-v -e p(:end)])
+end
+
+assert('mruby --verbose option') do
+  assert_mruby(/\A[^\n]*NODE.*\n:end\n\z/m, "", true, %w[--verbose -e p(:end)])
+end
+
+assert('mruby --') do
+  assert_mruby(%{["-x", "1"]\n}, "", true, %w[-e p(ARGV) -- -x 1])
+end
+
+assert('mruby invalid short option') do
+  assert_mruby("", /\A.*: invalid option -1 .*\n\z/, false, %w[-1])
+end
+
+assert('mruby invalid long option') do
+  assert_mruby("", /\A.*: invalid option --longopt .*\n\z/, false, %w[--longopt])
+end
+
+assert('unhandled exception') do
+  assert_mruby("", /\bEXCEPTION\b.*\n\z/, false, %w[-e raise("EXCEPTION")])
+end
+
+assert('program file not found') do
+  assert_mruby("", /\A.*: Cannot open program file: .*\n\z/, false, %w[_no_exists_])
+end
+
+assert('codegen error') do
+  code = "def f(#{(1..100).map{|n| "a#{n}"} * ","}); end"
+  assert_mruby("", /\Acodegen error:.*\n\z/, false, ["-e", code])
+end

mrbgems/mruby-bin-mruby/mrbgem.rake

@@ -4,7 +4,6 @@ MRuby::Gem::Specification.new('mruby-bin-mruby') do |spec|
   spec.summary = 'mruby command'
   spec.bins = %w(mruby)
   spec.add_dependency('mruby-compiler', :core => 'mruby-compiler')
-  spec.add_dependency('mruby-error', :core => 'mruby-error')
   spec.add_test_dependency('mruby-print', :core => 'mruby-print')
 
   if build.cxx_exception_enabled?

mrbgems/mruby-bin-mruby/tools/mruby/mruby.c

@@ -1,39 +1,39 @@
-#include <stdio.h>
+#include <mruby.h>
+
+#ifdef MRB_DISABLE_STDIO
+# error mruby-bin-mruby conflicts 'MRB_DISABLE_STDIO' configuration in your 'build_config.rb'
+#endif
+
 #include <stdlib.h>
 #include <string.h>
-#include <mruby.h>
 #include <mruby/array.h>
 #include <mruby/compile.h>
 #include <mruby/dump.h>
 #include <mruby/variable.h>
 
-#ifdef MRB_DISABLE_STDIO
-static void
-p(mrb_state *mrb, mrb_value obj)
-{
-  mrb_value val = mrb_inspect(mrb, obj);
-
-  fwrite(RSTRING_PTR(val), RSTRING_LEN(val), 1, stdout);
-  putc('\n', stdout);
-}
-#else
-#define p(mrb,obj) mrb_p(mrb,obj)
-#endif
-
 struct _args {
   FILE *rfp;
-  char* cmdline;
+  char *cmdline;
   mrb_bool fname        : 1;
   mrb_bool mrbfile      : 1;
   mrb_bool check_syntax : 1;
   mrb_bool verbose      : 1;
+  mrb_bool version      : 1;
   mrb_bool debug        : 1;
   int argc;
-  char** argv;
+  char **argv;
   int libc;
   char **libv;
 };
 
+struct options {
+  int argc;
+  char **argv;
+  char *program;
+  char *opt;
+  char short_opt[2];
+};
+
 static void
 usage(const char *name)
 {
@@ -52,11 +52,69 @@ usage(const char *name)
   };
   const char *const *p = usage_msg;
 
-  printf("Usage: %s [switches] programfile\n", name);
+  printf("Usage: %s [switches] [programfile] [arguments]\n", name);
   while (*p)
     printf("  %s\n", *p++);
 }
 
+static void
+options_init(struct options *opts, int argc, char **argv)
+{
+  opts->argc = argc;
+  opts->argv = argv;
+  opts->program = *argv;
+  *opts->short_opt = 0;
+}
+
+static const char *
+options_opt(struct options *opts)
+{
+  /* concatenated short options (e.g. `-cv`) */
+  if (*opts->short_opt && *++opts->opt) {
+   short_opt:
+    opts->short_opt[0] = *opts->opt;
+    opts->short_opt[1] = 0;
+    return opts->short_opt;
+  }
+
+  while (++opts->argv, --opts->argc) {
+    opts->opt = *opts->argv;
+
+    /*  empty         || not start with `-`  || `-` */
+    if (!opts->opt[0] || opts->opt[0] != '-' || !opts->opt[1]) return NULL;
+
+    if (opts->opt[1] == '-') {
+      /* `--` */
+      if (!opts->opt[2]) {
+        ++opts->argv, --opts->argc;
+        return NULL;
+      }
+      /* long option */
+      opts->opt += 2;
+      *opts->short_opt = 0;
+      return opts->opt;
+    }
+    else {
+      /* short option */
+      ++opts->opt;
+      goto short_opt;
+    }
+  }
+  return NULL;
+}
+
+static const char *
+options_arg(struct options *opts)
+{
+  if (*opts->short_opt && opts->opt[1]) {
+    /* concatenated short option and option argument (e.g. `-rLIBRARY`) */
+    *opts->short_opt = 0;
+    return opts->opt + 1;
+  }
+  --opts->argc, ++opts->argv;
+  return opts->argc ? *opts->argv : NULL;
+}
+
 static char *
 dup_arg_item(mrb_state *mrb, const char *item)
 {
@@ -69,40 +127,24 @@ dup_arg_item(mrb_state *mrb, const char *item)
 static int
 parse_args(mrb_state *mrb, int argc, char **argv, struct _args *args)
 {
-  char **origargv = argv;
   static const struct _args args_zero = { 0 };
+  struct options opts[1];
+  const char *opt, *item;
 
   *args = args_zero;
-
-  for (argc--,argv++; argc > 0; argc--,argv++) {
-    char *item;
-    if (argv[0][0] != '-') break;
-
-    if (strlen(*argv) <= 1) {
-      argc--; argv++;
-      args->rfp = stdin;
-      break;
-    }
-
-    item = argv[0] + 1;
-    switch (*item++) {
-    case 'b':
+  options_init(opts, argc, argv);
+  while ((opt = options_opt(opts))) {
+    if (strcmp(opt, "b") == 0) {
       args->mrbfile = TRUE;
-      break;
-    case 'c':
+    }
+    else if (strcmp(opt, "c") == 0) {
       args->check_syntax = TRUE;
-      break;
-    case 'd':
+    }
+    else if (strcmp(opt, "d") == 0) {
       args->debug = TRUE;
-      break;
-    case 'e':
-      if (item[0]) {
-        goto append_cmdline;
-      }
-      else if (argc > 1) {
-        argc--; argv++;
-        item = argv[0];
-append_cmdline:
+    }
+    else if (strcmp(opt, "e") == 0) {
+      if ((item = options_arg(opts))) {
         if (!args->cmdline) {
           args->cmdline = dup_arg_item(mrb, item);
         }
@@ -119,55 +161,65 @@ append_cmdline:
         }
       }
       else {
-        printf("%s: No code specified for -e\n", *origargv);
-        return EXIT_SUCCESS;
+        fprintf(stderr, "%s: No code specified for -e\n", opts->program);
+        return EXIT_FAILURE;
       }
-      break;
-    case 'r':
-      if (!item[0]) {
-        if (argc <= 1) {
-          printf("%s: No library specified for -r\n", *origargv);
-          return EXIT_FAILURE;
+    }
+    else if (strcmp(opt, "h") == 0) {
+      usage(opts->program);
+      exit(EXIT_SUCCESS);
+    }
+    else if (strcmp(opt, "r") == 0) {
+      if ((item = options_arg(opts))) {
+        if (args->libc == 0) {
+          args->libv = (char**)mrb_malloc(mrb, sizeof(char*));
         }
-        argc--; argv++;
-        item = argv[0];
-      }
-      if (args->libc == 0) {
-        args->libv = (char**)mrb_malloc(mrb, sizeof(char*));
+        else {
+          args->libv = (char**)mrb_realloc(mrb, args->libv, sizeof(char*) * (args->libc + 1));
+        }
+        args->libv[args->libc++] = dup_arg_item(mrb, item);
       }
       else {
-        args->libv = (char**)mrb_realloc(mrb, args->libv, sizeof(char*) * (args->libc + 1));
+        fprintf(stderr, "%s: No library specified for -r\n", opts->program);
+        return EXIT_FAILURE;
       }
-      args->libv[args->libc++] = dup_arg_item(mrb, item);
-      break;
-    case 'v':
-      if (!args->verbose) mrb_show_version(mrb);
-      args->verbose = TRUE;
-      break;
-    case '-':
-      if (strcmp((*argv) + 2, "version") == 0) {
+    }
+    else if (strcmp(opt, "v") == 0) {
+      if (!args->verbose) {
         mrb_show_version(mrb);
-        exit(EXIT_SUCCESS);
+        args->version = TRUE;
       }
-      else if (strcmp((*argv) + 2, "verbose") == 0) {
-        args->verbose = TRUE;
-        break;
-      }
-      else if (strcmp((*argv) + 2, "copyright") == 0) {
-        mrb_show_copyright(mrb);
-        exit(EXIT_SUCCESS);
-      }
-    default:
+      args->verbose = TRUE;
+    }
+    else if (strcmp(opt, "version") == 0) {
+      mrb_show_version(mrb);
+      exit(EXIT_SUCCESS);
+    }
+    else if (strcmp(opt, "verbose") == 0) {
+      args->verbose = TRUE;
+    }
+    else if (strcmp(opt, "copyright") == 0) {
+      mrb_show_copyright(mrb);
+      exit(EXIT_SUCCESS);
+    }
+    else {
+      fprintf(stderr, "%s: invalid option %s%s (-h will show valid options)\n",
+              opts->program, opt[1] ? "--" : "-", opt);
       return EXIT_FAILURE;
     }
   }
 
-  if (args->rfp == NULL && args->cmdline == NULL) {
-    if (*argv == NULL) args->rfp = stdin;
+  argc = opts->argc; argv = opts->argv;
+  if (args->cmdline == NULL) {
+    if (*argv == NULL) {
+      if (args->version) exit(EXIT_SUCCESS);
+      args->rfp = stdin;
+    }
     else {
-      args->rfp = fopen(argv[0], args->mrbfile ? "rb" : "r");
+      args->rfp = strcmp(argv[0], "-") == 0 ?
+        stdin : fopen(argv[0], args->mrbfile ? "rb" : "r");
       if (args->rfp == NULL) {
-        printf("%s: Cannot open program file. (%s)\n", *origargv, *argv);
+        fprintf(stderr, "%s: Cannot open program file: %s\n", opts->program, argv[0]);
         return EXIT_FAILURE;
       }
       args->fname = TRUE;
@@ -212,14 +264,13 @@ main(int argc, char **argv)
   mrb_sym zero_sym;
 
   if (mrb == NULL) {
-    fputs("Invalid mrb_state, exiting mruby\n", stderr);
+    fprintf(stderr, "%s: Invalid mrb_state, exiting mruby\n", *argv);
     return EXIT_FAILURE;
   }
 
   n = parse_args(mrb, argc, argv, &args);
   if (n == EXIT_FAILURE || (args.cmdline == NULL && args.rfp == NULL)) {
     cleanup(mrb, &args);
-    usage(argv[0]);
     return n;
   }
   else {
@@ -258,7 +309,7 @@ main(int argc, char **argv)
     for (i = 0; i < args.libc; i++) {
       FILE *lfp = fopen(args.libv[i], args.mrbfile ? "rb" : "r");
       if (lfp == NULL) {
-        printf("Cannot open library file: %s\n", args.libv[i]);
+        fprintf(stderr, "%s: Cannot open library file: %s\n", *argv, args.libv[i]);
         mrbc_context_free(mrb, c);
         cleanup(mrb, &args);
         return EXIT_FAILURE;
@@ -289,19 +340,16 @@ main(int argc, char **argv)
     mrb_gc_arena_restore(mrb, ai);
     mrbc_context_free(mrb, c);
     if (mrb->exc) {
-      if (mrb_undef_p(v)) {
-        mrb_p(mrb, mrb_obj_value(mrb->exc));
-      }
-      else {
+      if (!mrb_undef_p(v)) {
         mrb_print_error(mrb);
       }
-      n = -1;
+      n = EXIT_FAILURE;
     }
     else if (args.check_syntax) {
-      printf("Syntax OK\n");
+      puts("Syntax OK");
     }
   }
   cleanup(mrb, &args);
 
-  return n == 0 ? EXIT_SUCCESS : EXIT_FAILURE;
+  return n;
 }

mrbgems/mruby-bin-strip/tools/mruby-strip/mruby-strip.c

@@ -1,7 +1,11 @@
-#include <stdio.h>
+#include <mruby.h>
+
+#ifdef MRB_DISABLE_STDIO
+# error mruby-bin-strip conflicts 'MRB_DISABLE_STDIO' configuration in your 'build_config.rb'
+#endif
+
 #include <stdlib.h>
 #include <string.h>
-#include <mruby.h>
 #include <mruby/irep.h>
 #include <mruby/dump.h>
 

mrbgems/mruby-class-ext/src/class.c

@@ -5,14 +5,17 @@
 static mrb_value
 mrb_mod_name(mrb_state *mrb, mrb_value self)
 {
-  mrb_value name = mrb_class_path(mrb, mrb_class_ptr(self));
-  return mrb_nil_p(name)? name : mrb_str_dup(mrb, name);
+  mrb_value name =  mrb_class_path(mrb, mrb_class_ptr(self));
+  if (mrb_string_p(name)) {
+    MRB_SET_FROZEN_FLAG(mrb_basic_ptr(name));
+  }
+  return name;
 }
 
 static mrb_value
 mrb_mod_singleton_class_p(mrb_state *mrb, mrb_value self)
 {
-  return mrb_bool_value(mrb_type(self) == MRB_TT_SCLASS);
+  return mrb_bool_value(mrb_sclass_p(self));
 }
 
 /*
@@ -40,14 +43,15 @@ mrb_mod_module_exec(mrb_state *mrb, mrb_value self)
   const mrb_value *argv;
   mrb_int argc;
   mrb_value blk;
+  struct RClass *c;
 
-  mrb_get_args(mrb, "*&", &argv, &argc, &blk);
+  mrb_get_args(mrb, "*&!", &argv, &argc, &blk);
 
-  if (mrb_nil_p(blk)) {
-    mrb_raise(mrb, E_ARGUMENT_ERROR, "no block given");
+  c = mrb_class_ptr(self);
+  if (mrb->c->ci->acc < 0) {
+    return mrb_yield_with_class(mrb, blk, argc, argv, self, c);
   }
-
-  mrb->c->ci->target_class = mrb_class_ptr(self);
+  mrb->c->ci->target_class = c;
   return mrb_yield_cont(mrb, blk, self, argc, argv);
 }
 

mrbgems/mruby-compiler/core/codegen.c

@@ -102,12 +102,13 @@ codegen_error(codegen_scope *s, const char *message)
   while (s->prev) {
     codegen_scope *tmp = s->prev;
     mrb_free(s->mrb, s->iseq);
+    mrb_free(s->mrb, s->lines);
     mrb_pool_close(s->mpool);
     s = tmp;
   }
 #ifndef MRB_DISABLE_STDIO
   if (s->filename_sym && s->lineno) {
-    const char *filename = mrb_sym2name_len(s->mrb, s->filename_sym, NULL);
+    const char *filename = mrb_sym_name_len(s->mrb, s->filename_sym, NULL);
     fprintf(stderr, "codegen error:%s:%d: %s\n", filename, s->lineno, message);
   }
   else {
@@ -272,8 +273,7 @@ genop_W(codegen_scope *s, mrb_code i, uint32_t a)
 #define NOVAL  0
 #define VAL    1
 
-//static
-mrb_bool
+static mrb_bool
 no_optimize(codegen_scope *s)
 {
   if (s && s->parser && s->parser->no_optimize)
@@ -281,17 +281,8 @@ no_optimize(codegen_scope *s)
   return FALSE;
 }
 
-static
-mrb_bool
-on_eval(codegen_scope *s)
-{
-  if (s && s->parser && s->parser->on_eval)
-    return TRUE;
-  return FALSE;
-}
-
 struct mrb_insn_data
-mrb_decode_insn(mrb_code *pc)
+mrb_decode_insn(const mrb_code *pc)
 {
   struct mrb_insn_data data = { 0 };
   mrb_code insn = READ_B();
@@ -407,9 +398,6 @@ gen_move(codegen_scope *s, uint16_t dst, uint16_t src, int nopeep)
   if (no_peephole(s)) {
   normal:
     genop_2(s, OP_MOVE, dst, src);
-    if (on_eval(s)) {
-      genop_0(s, OP_NOP);
-    }
     return;
   }
   else {
@@ -559,7 +547,7 @@ new_lit(codegen_scope *s, mrb_value val)
       mrb_int len;
       pv = &s->irep->pool[i];
 
-      if (mrb_type(*pv) != MRB_TT_STRING) continue;
+      if (!mrb_string_p(*pv)) continue;
       if ((len = RSTRING_LEN(*pv)) != RSTRING_LEN(val)) continue;
       if (memcmp(RSTRING_PTR(*pv), RSTRING_PTR(val), len) == 0)
         return i;
@@ -570,7 +558,7 @@ new_lit(codegen_scope *s, mrb_value val)
     for (i=0; i<s->irep->plen; i++) {
       mrb_float f1, f2;
       pv = &s->irep->pool[i];
-      if (mrb_type(*pv) != MRB_TT_FLOAT) continue;
+      if (!mrb_float_p(*pv)) continue;
       f1 = mrb_float(*pv);
       f2 = mrb_float(val);
       if (f1 == f2 && !signbit(f1) == !signbit(f2)) return i;
@@ -599,7 +587,7 @@ new_lit(codegen_scope *s, mrb_value val)
 
   switch (mrb_type(val)) {
   case MRB_TT_STRING:
-    *pv = mrb_str_pool(s->mrb, val);
+    *pv = mrb_str_pool(s->mrb, RSTRING_PTR(val), RSTRING_LEN(val), RSTR_NOFREE_P(RSTRING(val)));
     break;
 
 #ifndef MRB_WITHOUT_FLOAT
@@ -674,6 +662,43 @@ lv_idx(codegen_scope *s, mrb_sym id)
   return 0;
 }
 
+static int
+search_upvar(codegen_scope *s, mrb_sym id, int *idx)
+{
+  struct RProc *u;
+  int lv = 0;
+  codegen_scope *up = s->prev;
+
+  while (up) {
+    *idx = lv_idx(up, id);
+    if (*idx > 0) {
+      return lv;
+    }
+    lv ++;
+    up = up->prev;
+  }
+
+  if (lv < 1) lv = 1;
+  u = s->parser->upper;
+  while (u && !MRB_PROC_CFUNC_P(u)) {
+    struct mrb_irep *ir = u->body.irep;
+    uint_fast16_t n = ir->nlocals;
+    const struct mrb_locals *v = ir->lv;
+    for (; n > 1; n --, v ++) {
+      if (v->name == id) {
+        *idx = v->r;
+        return lv - 1;
+      }
+    }
+    if (MRB_PROC_SCOPE_P(u)) break;
+    u = u->upper;
+    lv ++;
+  }
+
+  codegen_error(s, "Can't found local variables");
+  return -1; /* not reached */
+}
+
 static void
 for_body(codegen_scope *s, node *tree)
 {
@@ -686,9 +711,6 @@ for_body(codegen_scope *s, node *tree)
   codegen(s, tree->cdr->car, VAL);
   /* generate loop-block */
   s = scope_new(s->mrb, s, NULL);
-  if (s == NULL) {
-    raise_error(prev, "unexpected scope");
-  }
 
   push();                       /* push for a block parameter */
 
@@ -724,9 +746,6 @@ lambda_body(codegen_scope *s, node *tree, int blk)
 {
   codegen_scope *parent = s;
   s = scope_new(s->mrb, s, tree->car);
-  if (s == NULL) {
-    raise_error(parent, "unexpected scope");
-  }
 
   s->mscope = !blk;
 
@@ -777,7 +796,7 @@ lambda_body(codegen_scope *s, node *tree, int blk)
     s->ainfo = (((ma+oa) & 0x3f) << 7) /* (12bits = 5:1:5:1) */
       | ((ra & 0x1) << 6)
       | ((pa & 0x1f) << 1)
-      | (kd & 0x1);
+      | ((ka | kd) != 0 ? 0x01 : 0x00);
     genop_W(s, OP_ENTER, a);
     /* generate jump table for optional arguments initializer */
     pos = new_label(s);
@@ -792,12 +811,19 @@ lambda_body(codegen_scope *s, node *tree, int blk)
     i = 0;
     while (opt) {
       int idx;
+      mrb_sym id = nsym(opt->car->car);
 
       dispatch(s, pos+i*3+1);
       codegen(s, opt->car->cdr, VAL);
       pop();
-      idx = lv_idx(s, nsym(opt->car->car));
-      gen_move(s, idx, cursp(), 0);
+      idx = lv_idx(s, id);
+      if (idx > 0) {
+        gen_move(s, idx, cursp(), 0);
+      }
+      else {
+        int lv = search_upvar(s, id, &idx);
+        genop_3(s, OP_GETUPVAR, cursp(), idx, lv);
+      }
       i++;
       opt = opt->cdr;
     }
@@ -824,11 +850,19 @@ lambda_body(codegen_scope *s, node *tree, int blk)
         mrb_assert(nint(kwd->car) == NODE_KW_ARG);
 
         if (def_arg) {
+          int idx;
           genop_2(s, OP_KEY_P, lv_idx(s, kwd_sym), new_sym(s, kwd_sym));
           jmpif_key_p = genjmp2(s, OP_JMPIF, lv_idx(s, kwd_sym), 0, 0);
           codegen(s, def_arg, VAL);
           pop();
-          gen_move(s, lv_idx(s, kwd_sym), cursp(), 0);
+          idx = lv_idx(s, kwd_sym);
+          if (idx > 0) {
+            gen_move(s, idx, cursp(), 0);
+          }
+          else {
+            int lv = search_upvar(s, kwd_sym, &idx);
+            genop_3(s, OP_GETUPVAR, cursp(), idx, lv);
+          }
           jmp_def_set = genjmp(s, OP_JMP, 0);
           dispatch(s, jmpif_key_p);
         }
@@ -888,9 +922,6 @@ static int
 scope_body(codegen_scope *s, node *tree, int val)
 {
   codegen_scope *scope = scope_new(s->mrb, s, tree->car);
-  if (scope == NULL) {
-    codegen_error(s, "unexpected scope");
-  }
 
   codegen(scope, tree->cdr, VAL);
   gen_return(scope, OP_RETURN, scope->sp-1);
@@ -922,7 +953,7 @@ attrsym(codegen_scope *s, mrb_sym a)
   mrb_int len;
   char *name2;
 
-  name = mrb_sym2name_len(s->mrb, a, &len);
+  name = mrb_sym_name_len(s->mrb, a, &len);
   name2 = (char *)codegen_palloc(s,
                                  (size_t)len
                                  + 1 /* '=' */
@@ -956,7 +987,12 @@ gen_values(codegen_scope *s, node *t, int val, int extra)
         }
         else {
           pop_n(n);
-          genop_2(s, OP_ARRAY, cursp(), n);
+          if (n == 0 && is_splat) {
+            genop_1(s, OP_LOADNIL, cursp());
+          }
+          else {
+            genop_2(s, OP_ARRAY, cursp(), n);
+          }
           push();
           codegen(s, t->car, VAL);
           pop(); pop();
@@ -1041,7 +1077,7 @@ gen_call(codegen_scope *s, node *tree, mrb_sym name, int sp, int val, int safe)
   pop_n(n+1);
   {
     mrb_int symlen;
-    const char *symname = mrb_sym2name_len(s->mrb, sym, &symlen);
+    const char *symname = mrb_sym_name_len(s->mrb, sym, &symlen);
 
     if (!noop && symlen == 1 && symname[0] == '+' && n == 1)  {
       gen_addsub(s, OP_ADD, cursp());
@@ -1107,25 +1143,18 @@ gen_assignment(codegen_scope *s, node *tree, int sp, int val)
     if (idx > 0) {
       if (idx != sp) {
         gen_move(s, idx, sp, val);
-        if (val && on_eval(s)) genop_0(s, OP_NOP);
       }
       break;
     }
     else {                      /* upvar */
-      int lv = 0;
-      codegen_scope *up = s->prev;
-
-      while (up) {
-        idx = lv_idx(up, nsym(tree));
-        if (idx > 0) {
-          genop_3(s, OP_SETUPVAR, sp, idx, lv);
-          break;
-        }
-        lv++;
-        up = up->prev;
-      }
+      int lv = search_upvar(s, nsym(tree), &idx);
+      genop_3(s, OP_SETUPVAR, sp, idx, lv);
     }
     break;
+  case NODE_NVAR:
+    idx = nint(tree);
+    codegen_error(s, "Can't assign to numbered parameter");
+    break;
   case NODE_IVAR:
     idx = new_sym(s, nsym(tree));
     genop_2(s, OP_SETIV, sp, idx);
@@ -1401,7 +1430,7 @@ codegen(codegen_scope *s, node *tree, int val)
   }
   if (s->irep && s->filename_index != tree->filename_index) {
     mrb_sym fname = mrb_parser_get_filename(s->parser, s->filename_index);
-    const char *filename = mrb_sym2name_len(s->mrb, fname, NULL);
+    const char *filename = mrb_sym_name_len(s->mrb, fname, NULL);
 
     mrb_debug_info_append_file(s->mrb, s->irep->debug_info,
                                filename, s->lines, s->debug_start_pos, s->pc);
@@ -1553,7 +1582,7 @@ codegen(codegen_scope *s, node *tree, int val)
 
   case NODE_IF:
     {
-      int pos1, pos2;
+      int pos1, pos2, nil_p = FALSE;
       node *elsepart = tree->cdr->cdr->car;
 
       if (!tree->car) {
@@ -1570,32 +1599,59 @@ codegen(codegen_scope *s, node *tree, int val)
       case NODE_NIL:
         codegen(s, elsepart, val);
         goto exit;
+      case NODE_CALL:
+        {
+          node *n = tree->car->cdr;
+          mrb_sym mid = nsym(n->cdr->car);
+          mrb_sym mnil = mrb_intern_lit(s->mrb, "nil?");
+          if (mid == mnil && n->cdr->cdr->car == NULL) {
+            nil_p = TRUE;
+            codegen(s, n->car, VAL);
+          }
+        }
+        break;
+      }
+      if (!nil_p) {
+        codegen(s, tree->car, VAL);
       }
-      codegen(s, tree->car, VAL);
       pop();
-      pos1 = genjmp2(s, OP_JMPNOT, cursp(), 0, val);
-
-      codegen(s, tree->cdr->car, val);
-      if (elsepart) {
+      if (val || tree->cdr->car) {
+        if (nil_p) {
+          pos2 = genjmp2(s, OP_JMPNIL, cursp(), 0, val);
+          pos1 = genjmp(s, OP_JMP, 0);
+          dispatch(s, pos2);
+        }
+        else {
+          pos1 = genjmp2(s, OP_JMPNOT, cursp(), 0, val);
+        }
+        codegen(s, tree->cdr->car, val);
         if (val) pop();
-        pos2 = genjmp(s, OP_JMP, 0);
-        dispatch(s, pos1);
-        codegen(s, elsepart, val);
-        dispatch(s, pos2);
-      }
-      else {
-        if (val) {
-          pop();
+        if (elsepart || val) {
           pos2 = genjmp(s, OP_JMP, 0);
           dispatch(s, pos1);
-          genop_1(s, OP_LOADNIL, cursp());
+          codegen(s, elsepart, val);
           dispatch(s, pos2);
-          push();
         }
         else {
           dispatch(s, pos1);
         }
       }
+      else {                    /* empty then-part */
+        if (elsepart) {
+          if (nil_p) {
+            pos1 = genjmp2(s, OP_JMPNIL, cursp(), 0, val);
+          }
+          else {
+            pos1 = genjmp2(s, OP_JMPIF, cursp(), 0, val);
+          }
+          codegen(s, elsepart, val);
+          dispatch(s, pos1);
+        }
+        else if (val && !nil_p) {
+          genop_1(s, OP_LOADNIL, cursp());
+          push();
+        }
+      }
     }
     break;
 
@@ -1833,7 +1889,7 @@ codegen(codegen_scope *s, node *tree, int val)
           len++;
         }
         tree = tree->cdr;
-        if (val && len == 255) {
+        if (val && cursp() > 127) {
           pop_n(len*2);
           if (!update) {
             genop_2(s, OP_HASH, cursp(), len);
@@ -1955,7 +2011,7 @@ codegen(codegen_scope *s, node *tree, int val)
     {
       mrb_sym sym = nsym(tree->cdr->car);
       mrb_int len;
-      const char *name = mrb_sym2name_len(s->mrb, sym, &len);
+      const char *name = mrb_sym_name_len(s->mrb, sym, &len);
       int idx, callargs = -1, vsp = -1;
 
       if ((len == 2 && name[0] == '|' && name[1] == '|') &&
@@ -2297,26 +2353,25 @@ codegen(codegen_scope *s, node *tree, int val)
 
       if (idx > 0) {
         gen_move(s, cursp(), idx, val);
-        if (val && on_eval(s)) genop_0(s, OP_NOP);
       }
       else {
-        int lv = 0;
-        codegen_scope *up = s->prev;
-
-        while (up) {
-          idx = lv_idx(up, nsym(tree));
-          if (idx > 0) {
-            genop_3(s, OP_GETUPVAR, cursp(), idx, lv);
-            break;
-          }
-          lv++;
-          up = up->prev;
-        }
+        int lv = search_upvar(s, nsym(tree), &idx);
+        genop_3(s, OP_GETUPVAR, cursp(), idx, lv);
       }
       push();
     }
     break;
 
+  case NODE_NVAR:
+    if (val) {
+      int idx = nint(tree);
+
+      gen_move(s, cursp(), idx, val);
+
+      push();
+    }
+    break;
+
   case NODE_GVAR:
     {
       int sym = new_sym(s, nsym(tree));
@@ -2353,10 +2408,6 @@ codegen(codegen_scope *s, node *tree, int val)
     }
     break;
 
-  case NODE_DEFINED:
-    codegen(s, tree, val);
-    break;
-
   case NODE_BACK_REF:
     if (val) {
       char buf[] = {'$', nchar(tree)};
@@ -2373,7 +2424,7 @@ codegen(codegen_scope *s, node *tree, int val)
       mrb_value str;
       int sym;
 
-      str = mrb_format(mrb, "$%S", mrb_fixnum_value(nint(tree)));
+      str = mrb_format(mrb, "$%d", nint(tree));
       sym = new_sym(s, mrb_intern_str(mrb, str));
       genop_2(s, OP_GETGV, cursp(), sym);
       push();
@@ -2406,12 +2457,20 @@ codegen(codegen_scope *s, node *tree, int val)
       else
 #endif
       {
-        if (i == -1) genop_1(s, OP_LOADI__1, cursp());
-        else if (i < 0) genop_2(s, OP_LOADINEG, cursp(), (uint16_t)-i);
+        if (i < 0) {
+          if (i == -1) genop_1(s, OP_LOADI__1, cursp());
+          else if (i >= -0xff) genop_2(s, OP_LOADINEG, cursp(), (uint16_t)-i); 
+          else if (i >= -0x8000) genop_2S(s, OP_LOADI16, cursp(), (uint16_t)i);
+          else goto lit_int;
+        }
         else if (i < 8) genop_1(s, OP_LOADI_0 + (uint8_t)i, cursp());
-        else if (i <= 0xffff) genop_2(s, OP_LOADI, cursp(), (uint16_t)i);
+        else if (i <= 0xff) genop_2(s, OP_LOADI, cursp(), (uint16_t)i);
+        else if (i <= 0x7fff) genop_2S(s, OP_LOADI16, cursp(), (uint16_t)i);
         else {
-          int off = new_lit(s, mrb_fixnum_value(i));
+          int off;
+
+        lit_int:
+          off = new_lit(s, mrb_fixnum_value(i));
           genop_2(s, OP_LOADL, cursp(), off);
         }
       }
@@ -2467,9 +2526,12 @@ codegen(codegen_scope *s, node *tree, int val)
           else {
 #endif
             if (i == -1) genop_1(s, OP_LOADI__1, cursp());
-            else if (i >= -0xffff) {
+            else if (i >= -0xff) {
               genop_2(s, OP_LOADINEG, cursp(), (uint16_t)-i);
             }
+            else if (i >= -0x8000) {
+              genop_2S(s, OP_LOADI16, cursp(), (uint16_t)i);
+            }
             else {
               int off = new_lit(s, mrb_fixnum_value(i));
               genop_2(s, OP_LOADL, cursp(), off);
@@ -2944,7 +3006,11 @@ scope_new(mrb_state *mrb, codegen_scope *prev, node *lv)
   mrb_pool *pool = mrb_pool_open(mrb);
   codegen_scope *p = (codegen_scope *)mrb_pool_alloc(pool, sizeof(codegen_scope));
 
-  if (!p) return NULL;
+  if (!p) {
+    if (prev)
+      codegen_error(prev, "unexpected scope");
+    return NULL;
+  }
   *p = codegen_scope_zero;
   p->mrb = mrb;
   p->mpool = pool;
@@ -3020,6 +3086,9 @@ scope_finish(codegen_scope *s)
   mrb_state *mrb = s->mrb;
   mrb_irep *irep = s->irep;
 
+  if (s->nlocals >= 0x3ff) {
+    codegen_error(s, "too many local variables");
+  }
   irep->flags = 0;
   if (s->iseq) {
     irep->iseq = (mrb_code *)codegen_realloc(s, s->iseq, sizeof(mrb_code)*s->pc);
@@ -3030,7 +3099,7 @@ scope_finish(codegen_scope *s)
   irep->reps = (mrb_irep**)codegen_realloc(s, irep->reps, sizeof(mrb_irep*)*irep->rlen);
   if (s->filename_sym) {
     mrb_sym fname = mrb_parser_get_filename(s->parser, s->filename_index);
-    const char *filename = mrb_sym2name_len(s->mrb, fname, NULL);
+    const char *filename = mrb_sym_name_len(s->mrb, fname, NULL);
 
     mrb_debug_info_append_file(s->mrb, s->irep->debug_info,
                                filename, s->lines, s->debug_start_pos, s->pc);
@@ -3134,9 +3203,6 @@ generate_code(mrb_state *mrb, parser_state *p, int val)
   struct RProc *proc;
   struct mrb_jmpbuf *prev_jmp = mrb->jmp;
 
-  if (!scope) {
-    return NULL;
-  }
   scope->mrb = mrb;
   scope->parser = p;
   scope->filename_sym = p->filename_sym;

mrbgems/mruby-compiler/core/keywords

@@ -1,8 +1,5 @@
 %{
 struct kwtable {const char *name; int id[2]; enum mrb_lex_state_enum state;};
-const struct kwtable *mrb_reserved_word(const char *, unsigned int);
-static const struct kwtable *reserved_word(const char *, unsigned int);
-#define mrb_reserved_word(str, len) reserved_word(str, len)
 %}
 
 struct kwtable;

mrbgems/mruby-compiler/core/lex.def

@@ -1,4 +1,4 @@
-/* ANSI-C code produced by gperf version 3.0.4 */
+/* ANSI-C code produced by gperf version 3.1 */
 /* Command-line: gperf -L ANSI-C -C -p -j1 -i 1 -g -o -t -N mrb_reserved_word -k'1,3,$' /home/matz/work/mruby/mrbgems/mruby-compiler/core/keywords  */
 
 #if !((' ' == 32) && ('!' == 33) && ('"' == 34) && ('#' == 35) \
@@ -25,16 +25,13 @@
       && ('w' == 119) && ('x' == 120) && ('y' == 121) && ('z' == 122) \
       && ('{' == 123) && ('|' == 124) && ('}' == 125) && ('~' == 126))
 /* The character set is not based on ISO-646.  */
-#error "gperf generated tables don't work with this execution character set. Please report a bug to <bug-gnu-gperf@gnu.org>."
+#error "gperf generated tables don't work with this execution character set. Please report a bug to <bug-gperf@gnu.org>."
 #endif
 
 #line 1 "/home/matz/work/mruby/mrbgems/mruby-compiler/core/keywords"
 
 struct kwtable {const char *name; int id[2]; enum mrb_lex_state_enum state;};
-const struct kwtable *mrb_reserved_word(const char *, unsigned int);
-static const struct kwtable *reserved_word(const char *, unsigned int);
-#define mrb_reserved_word(str, len) reserved_word(str, len)
-#line 8 "/home/matz/work/mruby/mrbgems/mruby-compiler/core/keywords"
+#line 5 "/home/matz/work/mruby/mrbgems/mruby-compiler/core/keywords"
 struct kwtable;
 
 #define TOTAL_KEYWORDS 40
@@ -52,7 +49,7 @@ inline
 #endif
 #endif
 static unsigned int
-hash (const char *str, unsigned int len)
+hash (register const char *str, register size_t len)
 {
   static const unsigned char asso_values[] =
     {
@@ -83,7 +80,7 @@ hash (const char *str, unsigned int len)
       51, 51, 51, 51, 51, 51, 51, 51, 51, 51,
       51, 51, 51, 51, 51, 51
     };
-  int hval = len;
+  register unsigned int hval = len;
 
   switch (hval)
     {
@@ -98,109 +95,103 @@ hash (const char *str, unsigned int len)
   return hval + asso_values[(unsigned char)str[len - 1]];
 }
 
-#ifdef __GNUC__
-__inline
-#if defined __GNUC_STDC_INLINE__ || defined __GNUC_GNU_INLINE__
-__attribute__ ((__gnu_inline__))
-#endif
-#endif
 const struct kwtable *
-mrb_reserved_word (const char *str, unsigned int len)
+mrb_reserved_word (register const char *str, register size_t len)
 {
   static const struct kwtable wordlist[] =
     {
       {""}, {""}, {""}, {""}, {""}, {""}, {""}, {""},
-#line 18 "/home/matz/work/mruby/mrbgems/mruby-compiler/core/keywords"
-      {"break",        {keyword_break,       keyword_break},       EXPR_MID},
-#line 23 "/home/matz/work/mruby/mrbgems/mruby-compiler/core/keywords"
-      {"else",         {keyword_else,        keyword_else},        EXPR_BEG},
-#line 33 "/home/matz/work/mruby/mrbgems/mruby-compiler/core/keywords"
-      {"nil",          {keyword_nil,         keyword_nil},         EXPR_END},
-#line 26 "/home/matz/work/mruby/mrbgems/mruby-compiler/core/keywords"
-      {"ensure",       {keyword_ensure,      keyword_ensure},      EXPR_BEG},
-#line 25 "/home/matz/work/mruby/mrbgems/mruby-compiler/core/keywords"
-      {"end",          {keyword_end,         keyword_end},         EXPR_END},
-#line 42 "/home/matz/work/mruby/mrbgems/mruby-compiler/core/keywords"
-      {"then",         {keyword_then,        keyword_then},        EXPR_BEG},
-#line 34 "/home/matz/work/mruby/mrbgems/mruby-compiler/core/keywords"
-      {"not",          {keyword_not,         keyword_not},         EXPR_ARG},
-#line 27 "/home/matz/work/mruby/mrbgems/mruby-compiler/core/keywords"
-      {"false",        {keyword_false,       keyword_false},       EXPR_END},
-#line 40 "/home/matz/work/mruby/mrbgems/mruby-compiler/core/keywords"
-      {"self",         {keyword_self,        keyword_self},        EXPR_END},
-#line 24 "/home/matz/work/mruby/mrbgems/mruby-compiler/core/keywords"
-      {"elsif",        {keyword_elsif,       keyword_elsif},       EXPR_VALUE},
-#line 37 "/home/matz/work/mruby/mrbgems/mruby-compiler/core/keywords"
-      {"rescue",       {keyword_rescue,      modifier_rescue},     EXPR_MID},
-#line 43 "/home/matz/work/mruby/mrbgems/mruby-compiler/core/keywords"
-      {"true",         {keyword_true,        keyword_true},        EXPR_END},
-#line 46 "/home/matz/work/mruby/mrbgems/mruby-compiler/core/keywords"
-      {"until",        {keyword_until,       modifier_until},      EXPR_VALUE},
-#line 45 "/home/matz/work/mruby/mrbgems/mruby-compiler/core/keywords"
-      {"unless",       {keyword_unless,      modifier_unless},     EXPR_VALUE},
-#line 39 "/home/matz/work/mruby/mrbgems/mruby-compiler/core/keywords"
-      {"return",       {keyword_return,      keyword_return},      EXPR_MID},
-#line 21 "/home/matz/work/mruby/mrbgems/mruby-compiler/core/keywords"
-      {"def",          {keyword_def,         keyword_def},         EXPR_FNAME},
-#line 16 "/home/matz/work/mruby/mrbgems/mruby-compiler/core/keywords"
-      {"and",          {keyword_and,         keyword_and},         EXPR_VALUE},
-#line 22 "/home/matz/work/mruby/mrbgems/mruby-compiler/core/keywords"
-      {"do",           {keyword_do,          keyword_do},          EXPR_BEG},
-#line 49 "/home/matz/work/mruby/mrbgems/mruby-compiler/core/keywords"
-      {"yield",        {keyword_yield,       keyword_yield},       EXPR_ARG},
-#line 28 "/home/matz/work/mruby/mrbgems/mruby-compiler/core/keywords"
-      {"for",          {keyword_for,         keyword_for},         EXPR_VALUE},
-#line 44 "/home/matz/work/mruby/mrbgems/mruby-compiler/core/keywords"
-      {"undef",        {keyword_undef,       keyword_undef},       EXPR_FNAME},
-#line 35 "/home/matz/work/mruby/mrbgems/mruby-compiler/core/keywords"
-      {"or",           {keyword_or,          keyword_or},          EXPR_VALUE},
-#line 30 "/home/matz/work/mruby/mrbgems/mruby-compiler/core/keywords"
-      {"in",           {keyword_in,          keyword_in},          EXPR_VALUE},
-#line 47 "/home/matz/work/mruby/mrbgems/mruby-compiler/core/keywords"
-      {"when",         {keyword_when,        keyword_when},        EXPR_VALUE},
-#line 38 "/home/matz/work/mruby/mrbgems/mruby-compiler/core/keywords"
-      {"retry",        {keyword_retry,       keyword_retry},       EXPR_END},
-#line 29 "/home/matz/work/mruby/mrbgems/mruby-compiler/core/keywords"
-      {"if",           {keyword_if,          modifier_if},         EXPR_VALUE},
-#line 19 "/home/matz/work/mruby/mrbgems/mruby-compiler/core/keywords"
-      {"case",         {keyword_case,        keyword_case},        EXPR_VALUE},
-#line 36 "/home/matz/work/mruby/mrbgems/mruby-compiler/core/keywords"
-      {"redo",         {keyword_redo,        keyword_redo},        EXPR_END},
-#line 32 "/home/matz/work/mruby/mrbgems/mruby-compiler/core/keywords"
-      {"next",         {keyword_next,        keyword_next},        EXPR_MID},
-#line 41 "/home/matz/work/mruby/mrbgems/mruby-compiler/core/keywords"
-      {"super",        {keyword_super,       keyword_super},       EXPR_ARG},
-#line 31 "/home/matz/work/mruby/mrbgems/mruby-compiler/core/keywords"
-      {"module",       {keyword_module,      keyword_module},      EXPR_VALUE},
-#line 17 "/home/matz/work/mruby/mrbgems/mruby-compiler/core/keywords"
-      {"begin",        {keyword_begin,       keyword_begin},       EXPR_BEG},
-#line 12 "/home/matz/work/mruby/mrbgems/mruby-compiler/core/keywords"
-      {"__LINE__",     {keyword__LINE__,     keyword__LINE__},     EXPR_END},
-#line 11 "/home/matz/work/mruby/mrbgems/mruby-compiler/core/keywords"
-      {"__FILE__",     {keyword__FILE__,     keyword__FILE__},     EXPR_END},
-#line 10 "/home/matz/work/mruby/mrbgems/mruby-compiler/core/keywords"
-      {"__ENCODING__", {keyword__ENCODING__, keyword__ENCODING__}, EXPR_END},
-#line 14 "/home/matz/work/mruby/mrbgems/mruby-compiler/core/keywords"
-      {"END",          {keyword_END,         keyword_END},         EXPR_END},
 #line 15 "/home/matz/work/mruby/mrbgems/mruby-compiler/core/keywords"
-      {"alias",        {keyword_alias,       keyword_alias},       EXPR_FNAME},
+      {"break",        {keyword_break,       keyword_break},       EXPR_MID},
+#line 20 "/home/matz/work/mruby/mrbgems/mruby-compiler/core/keywords"
+      {"else",         {keyword_else,        keyword_else},        EXPR_BEG},
+#line 30 "/home/matz/work/mruby/mrbgems/mruby-compiler/core/keywords"
+      {"nil",          {keyword_nil,         keyword_nil},         EXPR_END},
+#line 23 "/home/matz/work/mruby/mrbgems/mruby-compiler/core/keywords"
+      {"ensure",       {keyword_ensure,      keyword_ensure},      EXPR_BEG},
+#line 22 "/home/matz/work/mruby/mrbgems/mruby-compiler/core/keywords"
+      {"end",          {keyword_end,         keyword_end},         EXPR_END},
+#line 39 "/home/matz/work/mruby/mrbgems/mruby-compiler/core/keywords"
+      {"then",         {keyword_then,        keyword_then},        EXPR_BEG},
+#line 31 "/home/matz/work/mruby/mrbgems/mruby-compiler/core/keywords"
+      {"not",          {keyword_not,         keyword_not},         EXPR_ARG},
+#line 24 "/home/matz/work/mruby/mrbgems/mruby-compiler/core/keywords"
+      {"false",        {keyword_false,       keyword_false},       EXPR_END},
+#line 37 "/home/matz/work/mruby/mrbgems/mruby-compiler/core/keywords"
+      {"self",         {keyword_self,        keyword_self},        EXPR_END},
+#line 21 "/home/matz/work/mruby/mrbgems/mruby-compiler/core/keywords"
+      {"elsif",        {keyword_elsif,       keyword_elsif},       EXPR_VALUE},
+#line 34 "/home/matz/work/mruby/mrbgems/mruby-compiler/core/keywords"
+      {"rescue",       {keyword_rescue,      modifier_rescue},     EXPR_MID},
+#line 40 "/home/matz/work/mruby/mrbgems/mruby-compiler/core/keywords"
+      {"true",         {keyword_true,        keyword_true},        EXPR_END},
+#line 43 "/home/matz/work/mruby/mrbgems/mruby-compiler/core/keywords"
+      {"until",        {keyword_until,       modifier_until},      EXPR_VALUE},
+#line 42 "/home/matz/work/mruby/mrbgems/mruby-compiler/core/keywords"
+      {"unless",       {keyword_unless,      modifier_unless},     EXPR_VALUE},
+#line 36 "/home/matz/work/mruby/mrbgems/mruby-compiler/core/keywords"
+      {"return",       {keyword_return,      keyword_return},      EXPR_MID},
+#line 18 "/home/matz/work/mruby/mrbgems/mruby-compiler/core/keywords"
+      {"def",          {keyword_def,         keyword_def},         EXPR_FNAME},
 #line 13 "/home/matz/work/mruby/mrbgems/mruby-compiler/core/keywords"
+      {"and",          {keyword_and,         keyword_and},         EXPR_VALUE},
+#line 19 "/home/matz/work/mruby/mrbgems/mruby-compiler/core/keywords"
+      {"do",           {keyword_do,          keyword_do},          EXPR_BEG},
+#line 46 "/home/matz/work/mruby/mrbgems/mruby-compiler/core/keywords"
+      {"yield",        {keyword_yield,       keyword_yield},       EXPR_ARG},
+#line 25 "/home/matz/work/mruby/mrbgems/mruby-compiler/core/keywords"
+      {"for",          {keyword_for,         keyword_for},         EXPR_VALUE},
+#line 41 "/home/matz/work/mruby/mrbgems/mruby-compiler/core/keywords"
+      {"undef",        {keyword_undef,       keyword_undef},       EXPR_FNAME},
+#line 32 "/home/matz/work/mruby/mrbgems/mruby-compiler/core/keywords"
+      {"or",           {keyword_or,          keyword_or},          EXPR_VALUE},
+#line 27 "/home/matz/work/mruby/mrbgems/mruby-compiler/core/keywords"
+      {"in",           {keyword_in,          keyword_in},          EXPR_VALUE},
+#line 44 "/home/matz/work/mruby/mrbgems/mruby-compiler/core/keywords"
+      {"when",         {keyword_when,        keyword_when},        EXPR_VALUE},
+#line 35 "/home/matz/work/mruby/mrbgems/mruby-compiler/core/keywords"
+      {"retry",        {keyword_retry,       keyword_retry},       EXPR_END},
+#line 26 "/home/matz/work/mruby/mrbgems/mruby-compiler/core/keywords"
+      {"if",           {keyword_if,          modifier_if},         EXPR_VALUE},
+#line 16 "/home/matz/work/mruby/mrbgems/mruby-compiler/core/keywords"
+      {"case",         {keyword_case,        keyword_case},        EXPR_VALUE},
+#line 33 "/home/matz/work/mruby/mrbgems/mruby-compiler/core/keywords"
+      {"redo",         {keyword_redo,        keyword_redo},        EXPR_END},
+#line 29 "/home/matz/work/mruby/mrbgems/mruby-compiler/core/keywords"
+      {"next",         {keyword_next,        keyword_next},        EXPR_MID},
+#line 38 "/home/matz/work/mruby/mrbgems/mruby-compiler/core/keywords"
+      {"super",        {keyword_super,       keyword_super},       EXPR_ARG},
+#line 28 "/home/matz/work/mruby/mrbgems/mruby-compiler/core/keywords"
+      {"module",       {keyword_module,      keyword_module},      EXPR_VALUE},
+#line 14 "/home/matz/work/mruby/mrbgems/mruby-compiler/core/keywords"
+      {"begin",        {keyword_begin,       keyword_begin},       EXPR_BEG},
+#line 9 "/home/matz/work/mruby/mrbgems/mruby-compiler/core/keywords"
+      {"__LINE__",     {keyword__LINE__,     keyword__LINE__},     EXPR_END},
+#line 8 "/home/matz/work/mruby/mrbgems/mruby-compiler/core/keywords"
+      {"__FILE__",     {keyword__FILE__,     keyword__FILE__},     EXPR_END},
+#line 7 "/home/matz/work/mruby/mrbgems/mruby-compiler/core/keywords"
+      {"__ENCODING__", {keyword__ENCODING__, keyword__ENCODING__}, EXPR_END},
+#line 11 "/home/matz/work/mruby/mrbgems/mruby-compiler/core/keywords"
+      {"END",          {keyword_END,         keyword_END},         EXPR_END},
+#line 12 "/home/matz/work/mruby/mrbgems/mruby-compiler/core/keywords"
+      {"alias",        {keyword_alias,       keyword_alias},       EXPR_FNAME},
+#line 10 "/home/matz/work/mruby/mrbgems/mruby-compiler/core/keywords"
       {"BEGIN",        {keyword_BEGIN,       keyword_BEGIN},       EXPR_END},
       {""},
-#line 20 "/home/matz/work/mruby/mrbgems/mruby-compiler/core/keywords"
+#line 17 "/home/matz/work/mruby/mrbgems/mruby-compiler/core/keywords"
       {"class",        {keyword_class,       keyword_class},       EXPR_CLASS},
       {""}, {""},
-#line 48 "/home/matz/work/mruby/mrbgems/mruby-compiler/core/keywords"
+#line 45 "/home/matz/work/mruby/mrbgems/mruby-compiler/core/keywords"
       {"while",        {keyword_while,       modifier_while},      EXPR_VALUE}
     };
 
   if (len <= MAX_WORD_LENGTH && len >= MIN_WORD_LENGTH)
     {
-      int key = hash (str, len);
+      register unsigned int key = hash (str, len);
 
-      if (key <= MAX_HASH_VALUE && key >= 0)
+      if (key <= MAX_HASH_VALUE)
         {
-          const char *s = wordlist[key].name;
+          register const char *s = wordlist[key].name;
 
           if (*str == *s && !strcmp (str + 1, s + 1))
             return &wordlist[key];
@@ -208,4 +199,5 @@ mrb_reserved_word (const char *str, unsigned int len)
     }
   return 0;
 }
-#line 50 "/home/matz/work/mruby/mrbgems/mruby-compiler/core/keywords"
+#line 47 "/home/matz/work/mruby/mrbgems/mruby-compiler/core/keywords"
+

mrbgems/mruby-compiler/core/node.h

@@ -51,6 +51,7 @@ enum node_type {
   NODE_IVAR,
   NODE_CONST,
   NODE_CVAR,
+  NODE_NVAR,
   NODE_NTH_REF,
   NODE_BACK_REF,
   NODE_MATCH,

mrbgems/mruby-compiler/mrbgem.rake

@@ -3,35 +3,33 @@ MRuby::Gem::Specification.new 'mruby-compiler' do |spec|
   spec.author  = 'mruby developers'
   spec.summary = 'mruby compiler library'
 
-  current_dir = spec.dir
-  current_build_dir = spec.build_dir
-
-  lex_def = "#{current_dir}/core/lex.def"
-  core_objs = Dir.glob("#{current_dir}/core/*.c").map { |f|
+  lex_def = "#{dir}/core/lex.def"
+  core_objs = Dir.glob("#{dir}/core/*.c").map { |f|
     next nil if build.cxx_exception_enabled? and f =~ /(codegen).c$/
-    objfile(f.pathmap("#{current_build_dir}/core/%n"))
+    objfile(f.pathmap("#{build_dir}/core/%n"))
   }.compact
 
   if build.cxx_exception_enabled?
     core_objs <<
-      build.compile_as_cxx("#{current_build_dir}/core/y.tab.c", "#{current_build_dir}/core/y.tab.cxx",
-                           objfile("#{current_build_dir}/y.tab"), ["#{current_dir}/core"]) <<
-      build.compile_as_cxx("#{current_dir}/core/codegen.c", "#{current_build_dir}/core/codegen.cxx")
+      build.compile_as_cxx("#{dir}/core/y.tab.c", "#{build_dir}/core/y.tab.cxx",
+                           objfile("#{build_dir}/y.tab"), ["#{dir}/core"]) <<
+      build.compile_as_cxx("#{dir}/core/codegen.c", "#{build_dir}/core/codegen.cxx")
   else
-    core_objs << objfile("#{current_build_dir}/core/y.tab")
-    file objfile("#{current_build_dir}/core/y.tab") => "#{current_build_dir}/core/y.tab.c" do |t|
-      cc.run t.name, t.prerequisites.first, [], ["#{current_dir}/core"]
+    core_objs << objfile("#{build_dir}/core/y.tab")
+    file objfile("#{build_dir}/core/y.tab") => "#{dir}/core/y.tab.c" do |t|
+      cc.run t.name, t.prerequisites.first, [], ["#{dir}/core"]
     end
   end
 
   # Parser
-  file "#{current_build_dir}/core/y.tab.c" => ["#{current_dir}/core/parse.y", lex_def] do |t|
-    FileUtils.mkdir_p File.dirname t.name
+  file "#{dir}/core/y.tab.c" => ["#{dir}/core/parse.y", lex_def] do |t|
     yacc.run t.name, t.prerequisites.first
+    content = File.read(t.name).gsub(/^#line +\d+ +"\K.*$/){$&.relative_path}
+    File.write(t.name, content)
   end
 
   # Lexical analyzer
-  file lex_def => "#{current_dir}/core/keywords" do |t|
+  file lex_def => "#{dir}/core/keywords" do |t|
     gperf.run t.name, t.prerequisites.first
   end
 

mrbgems/mruby-complex/mrbgem.rake

@@ -0,0 +1,7 @@
+MRuby::Gem::Specification.new('mruby-complex') do |spec|
+  spec.license = 'MIT'
+  spec.author  = 'mruby developers'
+  spec.summary = 'Complex class'
+
+  spec.add_dependency 'mruby-math', core: 'mruby-math'
+end

mrbgems/mruby-complex/mrblib/complex.rb

@@ -0,0 +1,122 @@
+class Complex < Numeric
+  def self.polar(abs, arg = 0)
+    Complex(abs * Math.cos(arg), abs * Math.sin(arg))
+  end
+
+  def inspect
+    "(#{to_s})"
+  end
+
+  def to_s
+    "#{real}#{'+' unless imaginary < 0}#{imaginary}i"
+  end
+
+  def +@
+    Complex(real, imaginary)
+  end
+
+  def -@
+    Complex(-real, -imaginary)
+  end
+
+  def +(rhs)
+    if rhs.is_a? Complex
+      Complex(real + rhs.real, imaginary + rhs.imaginary)
+    elsif rhs.is_a? Numeric
+      Complex(real + rhs, imaginary)
+    end
+  end
+
+  def -(rhs)
+    if rhs.is_a? Complex
+      Complex(real - rhs.real, imaginary - rhs.imaginary)
+    elsif rhs.is_a? Numeric
+      Complex(real - rhs, imaginary)
+    end
+  end
+
+  def *(rhs)
+    if rhs.is_a? Complex
+      Complex(real * rhs.real - imaginary * rhs.imaginary, real * rhs.imaginary + rhs.real * imaginary)
+    elsif rhs.is_a? Numeric
+      Complex(real * rhs, imaginary * rhs)
+    end
+  end
+
+  def /(rhs)
+    if rhs.is_a? Complex
+      __div__(rhs)
+    elsif rhs.is_a? Numeric
+      Complex(real / rhs, imaginary / rhs)
+    end
+  end
+  alias_method :quo, :/
+
+  def ==(rhs)
+    if rhs.is_a? Complex
+      real == rhs.real && imaginary == rhs.imaginary
+    elsif rhs.is_a? Numeric
+      imaginary == 0 && real == rhs
+    end
+  end
+
+  def abs
+    Math.hypot imaginary, real
+  end
+  alias_method :magnitude, :abs
+
+  def abs2
+    real * real + imaginary * imaginary
+  end
+
+  def arg
+    Math.atan2 imaginary, real
+  end
+  alias_method :angle, :arg
+  alias_method :phase, :arg
+
+  def conjugate
+    Complex(real, -imaginary)
+  end
+  alias_method :conj, :conjugate
+
+  def fdiv(numeric)
+    Complex(real.to_f / numeric, imaginary.to_f / numeric)
+  end
+
+  def polar
+    [abs, arg]
+  end
+
+  def real?
+    false
+  end
+
+  def rectangular
+    [real, imaginary]
+  end
+  alias_method :rect, :rectangular
+
+  def to_r
+    raise RangeError.new "can't convert #{to_s} into Rational" unless imaginary.zero?
+    Rational(real, 1)
+  end
+
+  alias_method :imag, :imaginary
+
+  [Fixnum, Float].each do |cls|
+    [:+, :-, :*, :/, :==].each do |op|
+      cls.instance_eval do
+        original_operator_name = :"__original_operator_#{op}_complex"
+        alias_method original_operator_name, op
+        define_method op do |rhs|
+          if rhs.is_a? Complex
+            Complex(self).__send__(op, rhs)
+          else
+            __send__(original_operator_name, rhs)
+          end
+        end
+      end
+    end
+  end
+end

mrbgems/mruby-complex/src/complex.c

@@ -0,0 +1,248 @@
+#include <mruby.h>
+#include <mruby/class.h>
+#include <mruby/numeric.h>
+#include <math.h>
+
+#ifdef MRB_WITHOUT_FLOAT
+# error Complex conflicts 'MRB_WITHOUT_FLOAT' configuration in your 'build_config.rb'
+#endif
+
+struct mrb_complex {
+  mrb_float real;
+  mrb_float imaginary;
+};
+
+#ifdef MRB_USE_FLOAT
+#define F(x) x##f
+#else
+#define F(x) x
+#endif
+
+#if defined(MRB_64BIT) || defined(MRB_USE_FLOAT)
+
+#define COMPLEX_USE_ISTRUCT
+/* use TT_ISTRUCT */
+#include <mruby/istruct.h>
+
+#define complex_ptr(mrb, v) (struct mrb_complex*)mrb_istruct_ptr(v)
+
+static struct RBasic*
+complex_alloc(mrb_state *mrb, struct RClass *c, struct mrb_complex **p)
+{
+  struct RIStruct *s;
+
+  s = (struct RIStruct*)mrb_obj_alloc(mrb, MRB_TT_ISTRUCT, c);
+  *p = (struct mrb_complex*)s->inline_data;
+
+  return (struct RBasic*)s;
+}
+
+#else
+/* use TT_DATA */
+#include <mruby/data.h>
+
+static const struct mrb_data_type mrb_complex_type = {"Complex", mrb_free};
+
+static struct RBasic*
+complex_alloc(mrb_state *mrb, struct RClass *c, struct mrb_complex **p)
+{
+  struct RData *d;
+
+  Data_Make_Struct(mrb, c, struct mrb_complex, &mrb_complex_type, *p, d);
+
+  return (struct RBasic*)d;
+}
+
+static struct mrb_complex*
+complex_ptr(mrb_state *mrb, mrb_value v)
+{
+  struct mrb_complex *p;
+
+  p = DATA_GET_PTR(mrb, v, &mrb_complex_type, struct mrb_complex);
+  if (!p) {
+    mrb_raise(mrb, E_ARGUMENT_ERROR, "uninitialized complex");
+  }
+  return p;
+}
+#endif
+
+static mrb_value
+complex_new(mrb_state *mrb, mrb_float real, mrb_float imaginary)
+{
+  struct RClass *c = mrb_class_get(mrb, "Complex");
+  struct mrb_complex *p;
+  struct RBasic *comp = complex_alloc(mrb, c, &p);
+  p->real = real;
+  p->imaginary = imaginary;
+  MRB_SET_FROZEN_FLAG(comp);
+
+  return mrb_obj_value(comp);
+}
+
+static mrb_value
+complex_real(mrb_state *mrb, mrb_value self)
+{
+  struct mrb_complex *p = complex_ptr(mrb, self);
+  return mrb_float_value(mrb, p->real);
+}
+
+static mrb_value
+complex_imaginary(mrb_state *mrb, mrb_value self)
+{
+  struct mrb_complex *p = complex_ptr(mrb, self);
+  return mrb_float_value(mrb, p->imaginary);
+}
+
+static mrb_value
+complex_s_rect(mrb_state *mrb, mrb_value self)
+{
+  mrb_float real, imaginary = 0.0;
+
+  mrb_get_args(mrb, "f|f", &real, &imaginary);
+  return complex_new(mrb, real, imaginary);
+}
+
+static mrb_value
+complex_to_f(mrb_state *mrb, mrb_value self)
+{
+  struct mrb_complex *p = complex_ptr(mrb, self);
+
+  if (p->imaginary != 0) {
+    mrb_raisef(mrb, E_RANGE_ERROR, "can't convert %v into Float", self);
+  }
+
+  return mrb_float_value(mrb, p->real);
+}
+
+static mrb_value
+complex_to_i(mrb_state *mrb, mrb_value self)
+{
+  struct mrb_complex *p = complex_ptr(mrb, self);
+
+  if (p->imaginary != 0) {
+    mrb_raisef(mrb, E_RANGE_ERROR, "can't convert %v into Float", self);
+  }
+  return mrb_int_value(mrb, p->real);
+}
+
+static mrb_value
+complex_to_c(mrb_state *mrb, mrb_value self)
+{
+  return self;
+}
+
+/* Arithmetic on (significand, exponent) pairs avoids premature overflow in
+   complex division */
+struct float_pair {
+  mrb_float s;
+  int x;
+};
+
+static void
+add_pair(struct float_pair *s, struct float_pair const *a,
+         struct float_pair const *b)
+{
+  if (b->s == 0.0F) {
+    *s = *a;
+  } else if (a->s == 0.0F) {
+    *s = *b;
+  } else if (a->x >= b->x) {
+    s->s = a->s + F(ldexp)(b->s, b->x - a->x);
+    s->x = a->x;
+  } else {
+    s->s = F(ldexp)(a->s, a->x - b->x) + b->s;
+    s->x = b->x;
+  }
+}
+
+static void
+mul_pair(struct float_pair *p, struct float_pair const *a,
+         struct float_pair const *b)
+{
+  p->s = a->s * b->s;
+  p->x = a->x + b->x;
+}
+
+static void
+div_pair(struct float_pair *q, struct float_pair const *a,
+         struct float_pair const *b)
+{
+  q->s = a->s / b->s;
+  q->x = a->x - b->x;
+}
+
+static mrb_value
+complex_div(mrb_state *mrb, mrb_value self)
+{
+  mrb_value rhs = mrb_get_arg1(mrb);
+  struct mrb_complex *a, *b;
+  struct float_pair ar, ai, br, bi;
+  struct float_pair br2, bi2;
+  struct float_pair div;
+  struct float_pair ar_br, ai_bi;
+  struct float_pair ai_br, ar_bi;
+  struct float_pair zr, zi;
+
+  a = complex_ptr(mrb, self);
+  b = complex_ptr(mrb, rhs);
+
+  /* Split floating point components into significand and exponent */
+  ar.s = F(frexp)(a->real, &ar.x);
+  ai.s = F(frexp)(a->imaginary, &ai.x);
+  br.s = F(frexp)(b->real, &br.x);
+  bi.s = F(frexp)(b->imaginary, &bi.x);
+
+  /* Perform arithmetic on (significand, exponent) pairs to produce
+     the result: */
+
+  /* the divisor */
+  mul_pair(&br2, &br, &br);
+  mul_pair(&bi2, &bi, &bi);
+  add_pair(&div, &br2, &bi2);
+
+  /* real component */
+  mul_pair(&ar_br, &ar, &br);
+  mul_pair(&ai_bi, &ai, &bi);
+  add_pair(&zr, &ar_br, &ai_bi);
+  div_pair(&zr, &zr, &div);
+
+  /* imaginary component */
+  mul_pair(&ai_br, &ai, &br);
+  mul_pair(&ar_bi, &ar, &bi);
+  ar_bi.s = -ar_bi.s;
+  add_pair(&zi, &ai_br, &ar_bi);
+  div_pair(&zi, &zi, &div);
+
+  /* assemble the result */
+  return complex_new(mrb, F(ldexp)(zr.s, zr.x), F(ldexp)(zi.s, zi.x));
+}
+
+void mrb_mruby_complex_gem_init(mrb_state *mrb)
+{
+  struct RClass *comp;
+
+#ifdef COMPLEX_USE_ISTRUCT
+  mrb_assert(sizeof(struct mrb_complex) < ISTRUCT_DATA_SIZE);
+#endif
+  comp = mrb_define_class(mrb, "Complex", mrb_class_get(mrb, "Numeric"));
+#ifdef COMPLEX_USE_ISTRUCT
+  MRB_SET_INSTANCE_TT(comp, MRB_TT_ISTRUCT);
+#else
+  MRB_SET_INSTANCE_TT(comp, MRB_TT_DATA);
+#endif
+  mrb_undef_class_method(mrb, comp, "new");
+  mrb_define_class_method(mrb, comp, "rectangular", complex_s_rect, MRB_ARGS_REQ(1)|MRB_ARGS_OPT(1));
+  mrb_define_class_method(mrb, comp, "rect", complex_s_rect, MRB_ARGS_REQ(1)|MRB_ARGS_OPT(1));
+  mrb_define_method(mrb, mrb->kernel_module, "Complex", complex_s_rect, MRB_ARGS_REQ(1)|MRB_ARGS_OPT(1));
+  mrb_define_method(mrb, comp, "real", complex_real, MRB_ARGS_NONE());
+  mrb_define_method(mrb, comp, "imaginary", complex_imaginary, MRB_ARGS_NONE());
+  mrb_define_method(mrb, comp, "to_f", complex_to_f, MRB_ARGS_NONE());
+  mrb_define_method(mrb, comp, "to_i", complex_to_i, MRB_ARGS_NONE());
+  mrb_define_method(mrb, comp, "to_c", complex_to_c, MRB_ARGS_NONE());
+  mrb_define_method(mrb, comp, "__div__", complex_div, MRB_ARGS_REQ(1));
+}
+
+void
+mrb_mruby_complex_gem_final(mrb_state* mrb)
+{
+}

mrbgems/mruby-complex/test/complex.rb

@@ -0,0 +1,153 @@
+def assert_complex(real, exp)
+  assert "assert_complex" do
+    assert_float real.real,      exp.real
+    assert_float real.imaginary, exp.imaginary
+  end
+end
+
+assert 'Complex' do
+  c = 123i
+  assert_equal Complex, c.class
+  assert_equal [c.real, c.imaginary], [0, 123]
+  c = 123 + -1.23i
+  assert_equal Complex, c.class
+  assert_equal [c.real, c.imaginary], [123, -1.23]
+end
+
+assert 'Complex::polar' do
+  assert_complex Complex.polar(3, 0),           (3  +  0i)
+  assert_complex Complex.polar(3, Math::PI/2),  (0  +  3i)
+  assert_complex Complex.polar(3, Math::PI),    (-3 +  0i)
+  assert_complex Complex.polar(3, -Math::PI/2), (0  + -3i)
+end
+
+assert 'Complex::rectangular' do
+  assert_complex Complex.rectangular(1, 2), (1 + 2i)
+end
+
+assert 'Complex#*' do
+  assert_complex Complex(2, 3)  * Complex(2, 3),  (-5    + 12i)
+  assert_complex Complex(900)   * Complex(1),     (900   + 0i)
+  assert_complex Complex(-2, 9) * Complex(-9, 2), (0     - 85i)
+  assert_complex Complex(9, 8)  * 4,              (36    + 32i)
+  assert_complex Complex(20, 9) * 9.8,            (196.0 + 88.2i)
+end
+
+assert 'Complex#+' do
+  assert_complex Complex(2, 3)  + Complex(2, 3) , (4    + 6i)
+  assert_complex Complex(900)   + Complex(1)    , (901  + 0i)
+  assert_complex Complex(-2, 9) + Complex(-9, 2), (-11  + 11i)
+  assert_complex Complex(9, 8)  + 4             , (13   + 8i)
+  assert_complex Complex(20, 9) + 9.8           , (29.8 + 9i)
+end
+
+assert 'Complex#-' do
+  assert_complex Complex(2, 3)  - Complex(2, 3) , (0    + 0i)
+  assert_complex Complex(900)   - Complex(1)    , (899  + 0i)
+  assert_complex Complex(-2, 9) - Complex(-9, 2), (7    + 7i)
+  assert_complex Complex(9, 8)  - 4             , (5    + 8i)
+  assert_complex Complex(20, 9) - 9.8           , (10.2 + 9i)
+end
+
+assert 'Complex#-@' do
+  assert_complex(-Complex(1, 2), (-1 - 2i))
+end
+
+assert 'Complex#/' do
+  assert_complex Complex(2, 3)  / Complex(2, 3) , (1                  + 0i)
+  assert_complex Complex(900)   / Complex(1)    , (900                + 0i)
+  assert_complex Complex(-2, 9) / Complex(-9, 2), ((36 / 85)          - (77i / 85))
+  assert_complex Complex(9, 8)  / 4             , ((9 / 4)            + 2i)
+  assert_complex Complex(20, 9) / 9.8           , (2.0408163265306123 + 0.9183673469387754i)
+  if 1e39.infinite? then
+    # MRB_USE_FLOAT in effect
+    ten = 1e21
+    one = 1e20
+  else
+    ten = 1e201
+    one = 1e200
+  end
+  assert_complex Complex(ten, ten) / Complex(one, one), Complex(10.0, 0.0)
+end
+
+assert 'Complex#==' do
+  assert_true  Complex(2, 3)  == Complex(2, 3)
+  assert_true  Complex(5)     == 5
+  assert_true  Complex(0)     == 0.0
+end
+
+assert 'Complex#abs' do
+  assert_float Complex(-1).abs,        1
+  assert_float Complex(3.0, -4.0).abs, 5.0
+  if 1e39.infinite? then
+    # MRB_USE_FLOAT in effect
+    exp = 125
+  else
+    exp = 1021
+  end
+  assert_true Complex(3.0*2.0**exp, 4.0*2.0**exp).abs.finite?
+  assert_float Complex(3.0*2.0**exp, 4.0*2.0**exp).abs, 5.0*2.0**exp
+end
+
+assert 'Complex#abs2' do
+  assert_float Complex(-1).abs2,        1
+  assert_float Complex(3.0, -4.0).abs2, 25.0
+end
+
+assert 'Complex#arg' do
+  assert_float Complex.polar(3, Math::PI/2).arg, 1.5707963267948966
+end
+
+assert 'Complex#conjugate' do
+  assert_complex Complex(1, 2).conjugate, (1 - 2i)
+end
+
+assert 'Complex#fdiv' do
+  assert_complex Complex(11, 22).fdiv(3), (3.6666666666666665 + 7.333333333333333i)
+end
+
+assert 'Complex#imaginary' do
+  assert_float Complex(7).imaginary    , 0
+  assert_float Complex(9, -4).imaginary, -4
+end
+
+assert 'Complex#polar' do
+  assert_equal Complex(1, 2).polar, [2.23606797749979, 1.1071487177940904]
+end
+
+assert 'Complex#real' do
+  assert_float Complex(7).real,     7
+  assert_float Complex(9, -4).real, 9
+end
+
+assert 'Complex#real?' do
+  assert_false Complex(1).real?
+end
+
+assert 'Complex::rectangular' do
+  assert_equal Complex(1, 2).rectangular, [1, 2]
+end
+
+assert 'Complex::to_c' do
+  assert_equal Complex(1, 2).to_c, Complex(1, 2)
+end
+
+assert 'Complex::to_f' do
+  assert_float Complex(1, 0).to_f, 1.0
+  assert_raise(RangeError) do
+    Complex(1, 2).to_f
+  end
+end
+
+assert 'Complex::to_i' do
+  assert_equal Complex(1, 0).to_i, 1
+  assert_raise(RangeError) do
+    Complex(1, 2).to_i
+  end
+end
+
+assert 'Complex#frozen?' do
+  assert_predicate(1i, :frozen?)
+  assert_predicate(Complex(2,3), :frozen?)
+  assert_predicate(4+5i, :frozen?)
+end

mrbgems/mruby-enum-chain/mrblib/chain.rb

@@ -6,28 +6,30 @@ module Enumerable
   def chain(*args)
     Enumerator::Chain.new(self, *args)
   end
-
-  def +(other)
-    Enumerator::Chain.new(self, other)
-  end
 end
 
 class Enumerator
+  def +(other)
+    Chain.new(self, other)
+  end
+
   class Chain
     include Enumerable
 
     def initialize(*args)
-      @enums = args
-    end
-
-    def initialize_copy(orig)
-      @enums = orig.__copy_enums
+      @enums = args.freeze
+      @pos = -1
     end
 
     def each(&block)
-      return to_enum unless block_given?
+      return to_enum unless block
 
-      @enums.each { |e| e.each(&block) }
+      i = 0
+      while i < @enums.size
+        @pos = i
+        @enums[i].each(&block)
+        i += 1
+      end
 
       self
     end
@@ -40,21 +42,21 @@ class Enumerator
     end
 
     def rewind
-      @enums.reverse_each do |e|
+      while 0 <= @pos && @pos < @enums.size
+        e = @enums[@pos]
         e.rewind if e.respond_to?(:rewind)
+        @pos -= 1
       end
 
       self
     end
 
+    def +(other)
+      self.class.new(self, other)
+    end
+
     def inspect
       "#<#{self.class}: #{@enums.inspect}>"
     end
-
-    def __copy_enums
-      @enums.each_with_object([]) do |e, a|
-        a << e.clone
-      end
-    end
   end
 end

mrbgems/mruby-enum-chain/test/enum_chain.rb

@@ -12,9 +12,9 @@ assert("Enumerable#chain") do
   assert_raise(NoMethodError) { c.chain }
 end
 
-assert("Enumerable#+") do
+assert("Enumerator#+") do
   a = [].each
-  b = {}.reverse_each
+  b = {}.each
   c = Object.new # not has #each method
 
   assert_kind_of Enumerator::Chain, a + b
@@ -24,7 +24,7 @@ assert("Enumerable#+") do
   assert_raise(NoMethodError) { c + a }
 end
 
-assert("Enumerator.new") do
+assert("Enumerator::Chain.new") do
   a = []
   b = {}
   c = Object.new # not has #each method
@@ -46,13 +46,13 @@ assert("Enumerator::Chain#each") do
   assert_kind_of Enumerator, aa.each
   assert_equal [1, 2, 3, 1, 2, 3], aa.each.to_a
 
-  aa = a.chain(a.reverse_each)
+  aa = a.chain(6..9)
   assert_kind_of Enumerator, aa.each
-  assert_equal [1, 2, 3, 3, 2, 1], aa.each.to_a
+  assert_equal [1, 2, 3, 6, 7, 8, 9], aa.each.to_a
 
-  aa = a.chain(a.reverse_each, a)
+  aa = a.chain((-3..-2).each_with_index, a)
   assert_kind_of Enumerator, aa.each
-  assert_equal [1, 2, 3, 3, 2, 1, 1, 2, 3], aa.each.to_a
+  assert_equal [1, 2, 3, [-3, 0], [-2, 1], 1, 2, 3], aa.each.to_a
 
   aa = a.chain(Object.new)
   assert_kind_of Enumerator, aa.each
@@ -65,12 +65,44 @@ assert("Enumerator::Chain#size") do
   aa = a.chain(a)
   assert_equal 6, aa.size
 
-  aa = a.chain(a.reverse_each)
+  aa = a.chain(3..4)
   assert_nil aa.size
 
-  aa = a.chain(a.reverse_each, a)
+  aa = a.chain(3..4, a)
   assert_nil aa.size
 
   aa = a.chain(Object.new)
   assert_nil aa.size
 end
+
+assert("Enumerator::Chain#rewind") do
+  rewound = nil
+  e1 = [1, 2]
+  e2 = (4..6)
+  (class << e1; self end).define_method(:rewind) { rewound << self }
+  (class << e2; self end).define_method(:rewind) { rewound << self }
+  c = e1.chain(e2)
+
+  rewound = []
+  c.rewind
+  assert_equal [], rewound
+
+  rewound = []
+  c.each{break c}.rewind
+  assert_equal [e1], rewound
+
+  rewound = []
+  c.each{}.rewind
+  assert_equal [e2, e1], rewound
+end
+
+assert("Enumerator::Chain#+") do
+  a = [].chain
+  b = {}.chain
+  c = Object.new # not has #each method
+
+  assert_kind_of Enumerator::Chain, a + b
+  assert_kind_of Enumerator::Chain, a + c
+  assert_kind_of Enumerator::Chain, b + a
+  assert_kind_of Enumerator::Chain, b + c
+end