Merge pull request #2640 from mruby-Forum/v1.1.0

mruby-1.1.0
2026-06-08 16:11:16 +00:00 · 2014-11-19 09:02:10 +09:00
parent 5c6d6309b6 b473043acf
commit 4e4bfb08cb
24 changed files with 4267 additions and 7 deletions
@@ -20,3 +20,14 @@ Original Authors "mruby developers" are:
   Tatsuhiko Kubo
   Takeshi Watanabe
   Yuki Kurihara
+   specified non-profit corporation mruby Forum
+   Kazuaki Tanaka
+   Hiromasa Ishii
+   Hiroshi Mimaki
+   Satoshi Odawara
+   Mitsubishi Electric Micro-Computer Application Software Co.,Ltd.
+   Hiroyuki Matsuzaki
+   Yuhei Okazaki
+   Manycolors, Inc.
+   Shota Nakano
+   Yuichi Osawa
@@ -75,6 +75,16 @@ MRuby.each_target do |target|
          FileUtils.cp t.prerequisites.first, t.name, { :verbose => $verbose }
        end
        depfiles += [ install_path ]
+      elsif target == MRuby.targets['host-debug']
+        unless MRuby.targets['host'].gems.map {|g| g.bins}.include?([bin])
+          install_path = MRuby.targets['host-debug'].exefile("#{MRUBY_ROOT}/bin/#{bin}")
+
+          file install_path => exec do |t|
+            FileUtils.rm_f t.name, { :verbose => $verbose }
+            FileUtils.cp t.prerequisites.first, t.name, { :verbose => $verbose }
+          end
+          depfiles += [ install_path ]
+        end
      else
        depfiles += [ exec ]
      end
@@ -83,6 +83,31 @@ MRuby::Build.new do |conf|
  # conf.enable_bintest
 end

+MRuby::Build.new('host-debug') do |conf|
+  # load specific toolchain settings
+
+  # 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'
+
+  # C compiler settings
+  conf.cc.defines = %w(ENABLE_DEBUG)
+
+  # Generate mruby debugger command (require mruby-eval)
+  conf.gem :core => "mruby-bin-debugger"
+
+  # bintest
+  # conf.enable_bintest
+end
+
 # Define cross build settings
 # MRuby::CrossBuild.new('32bit') do |conf|
 #   toolchain :gcc
@@ -0,0 +1,341 @@
+# How to use mruby debugger mrdb
+
+copyright (c) 2014 Specified Non-Profit Coorporation mruby Forum
+
+## 1.Summary
+This file documents the method for using the mruby debugger 'mrdb'
+
+## 2 debugging with mrdb
+
+## 2.1 Building mrdb
+
+The trunk of the mruby source tree can be checked out with following command/
+
+```bash
+$ git clone https://github.com/Kumikomi-Ruby/forum-mruby.git mruby
+```
+
+Run make command
+```bash
+$ cd mruby
+$ make
+```
+
+By default, make command will install debugger files into mruby/bin.
+
+You can add the path for mrdb on your host environment with following command
+
+```bash
+$ echo "export PATH=\$PATH:MRUBY_ROOT/bin" >> ~/.bashrc
+$ source ~/.bashrc
+```
+
+*MRUBY_ROOT is the directory in which mruby source cords will be installed.
+
+To confirm mrdb was instaleed properly,run mrdb with --version option
+
+```bash
+$ mrdb --version
+mruby 1.1.0 (2014-11-19)
+```
+
+## 2.2 Bassic Operation
+
+### 2.2.1 debugging mruby script file(rb file) with mrdb
+
+To invoke mruby debugger, just type mrdb.
+
+To specify the script file ,
+
+```bash
+$ mrdb [option] file name
+```
+
+For example : Debugging sample.rb
+
+```bash
+$ mrdb sample.rb
+```
+
+You can excute shell commands listed below
+
+|command|description|
+|:-:|:--|
+|run|execute programs|
+|step|execute stepping|
+|continue|execute continuing program|
+|break|configure the breaking point|
+|delete|deleting the breaking points|
+|disable|disabling the breaking points|
+|enable|enabling the breaking points|
+|info breakpoints|showing list of the breaking points|
+|print|eavaluating and printing the values of the mruby expressions in the script|
+|list|displaying the source cords|
+|help|showing help|
+|quit|terminating the mruby debugger|
+
+### 2.2.2 debugging mruby binary file(mrb file) with mrdb
+
+You can debugg the mruby binary files
+
+#### 2.2.2.1 debuggg the binary files
+
+* notice
+To debugg mruby binary files, you need to compile mruby files with option -g.
+
+```bash
+$ mrbc -g sample.rb
+```
+
+You can debugg the mruby binary files with following command and the option -b.
+
+```bash
+$ mrdb -b sample.mrb
+```
+
+Then you can execute all debugger shell commands.
+
+#### break command
+ you can give any breakpoint to stop the program by specifiyng the line number and method name.
+ And the breakpoint list will be displayed after you finished to set the breakpoint succesfully.
+
+Usage:
+```
+break [file:]lineno
+b [file:]lineno
+break [class:]method
+b [class:]method
+```
+
+The breakpoint will be numbered in serial order from 1.The number which was given to deleted breakpoint will not be given to another breakpoint again.
+
+You can give multiple breakpoints to specified the line number and method.
+Be ware that breakpoint command will not check the validity of the class name and method name.
+
+You can see the current breakpoint information by following options.
+
+breakpoint breakpoint number : file name. line number
+
+breakpoint breakpoint number : [class name,] method name
+
+#### continue command
+
+Usage:
+```
+continue [N]
+c [N]
+```
+
+N: the next breakpoint number
+
+Resuming the program and will stop the program at breakpoint at N (N-1 breakpoint will be ignored)
+
+When you run continue command without any specifying N ,Program will be stopped at next breakpoint.
+
+Example:
+```
+(foo.rb:1) continue 3
+```
+Resuming the program and stopping the program at the third breakpoint.
+
+#### delete command
+
+Deleting specified breakpoint
+
+Usage:
+```
+delete [breakpointno]
+d [breakpointno]
+```
+
+breakpointno: breakpoint number
+
+Example:
+```
+(foo.rb:1) delete
+```
+
+Deleting all brealpoint
+```
+(foo.rb:1) delete 1 3
+```
+
+Deleting the breakpoint 1 and 3
+
+#### diable command
+
+Disabling the specified breakpoint
+
+Usage:
+```
+disable [breakpointno]
+dis [breakpointno]
+```
+
+brealpointno: breakpoint number
+
+Example:
+```
+(foo.rb:1) disable
+```
+
+Desabling all brealpoint
+```
+(foo.rb:1) disable 1 3
+```
+
+Disabling the breakpoint 1 and 3
+
+#### enable command
+
+Enababling the specified breakpoint
+
+Usage:
+```
+enable [breakpointno]
+e [breakpointno]
+```
+
+brealpointno: breakpoint number
+
+Example:
+```
+(foo.rb:1) enable
+```
+
+Enabling all brealpoint
+```
+(foo.rb:1) enable 1 3
+```
+
+Enabling the breakpoint 1 and 3
+
+#### eval command
+
+Evaluating the string as source code and printing the value.
+
+Same as print command, please see print command.
+
+#### help command
+
+Displaying the help message.
+
+Usage:
+```
+help [comand]
+h [command]
+```
+Typing help without any option will displays the command list.
+
+#### info breakpoints command
+
+Displaying the specified breakpoint information.
+
+Usage:
+```
+info breakpoints [breakpointno]
+i b [breakpointno]
+```
+
+breakpointno: breakpoint number
+
+Typing "info breakpoints" without ant option will display all breakpoint information.
+Example
+```
+(sample.rb:1) info breakpoints
+Num     Type           Enb What  
+1       breakpoint     y   at sample.rb:3                      -> file name,line number
+2       breakpoint     n   in Sample_class:sample_class_method -> [class:]method name
+3       breakpoint     y   in sample_global_method
+```
+
+Displaying specified the breakpoint number
+```
+(foo.rb:1) info breakpoints 1 3
+Num     Type           Enb What  
+1       breakpoint     y   at sample.rb:3  
+3       breakpoint     y   in sample_global_method
+```
+
+#### list command
+
+Displaying the cords of the source file.
+
+Usage:
+```
+list [filename:]first[,last]
+l [filename]:first[,last]
+```
+
+first: the opening row number
+last : the closing row number
+
+When you specify first , but not specify option "last" , you will get 10 rows.
+When you don not specify both of first and last, you will next 10 rows.
+
+Example:
+```
+Specifying file name and first row number
+sample.rb:1) list sample2.rb:5
+```
+
+Specifying file name and first and last row number
+```
+(sample.rb:1) list sample2.rb:6,7
+```
+
+#### print command
+Evaluating the string as source code and printing the value.
+
+Usage:
+```
+print [expr]
+p [expr]
+```
+
+expr: expression
+
+To specify the expression is indispensableness.
+The displayed expressions will be numbered in serial order from 1.
+If an exception occurs, the exception information will be displayed and the debugging will be continued.
+
+Example:
+```
+(sample.rb:1) print 1+2
+$1 = 3
+(sample.rb:1) print self
+$2 = main
+```
+
+below is the case of the exception:
+```
+(sample.rb:1) print (1+2
+$1 =  SyntaxError: line 1: syntax error, unexpected $end, expecting ')'
+```
+
+#### quit command
+Quitting the debugger.
+
+Usage:
+```
+quit
+q
+```
+
+#### run command
+
+Running the program and stopping at the first breakpoint.
+
+Usage:
+```
+run
+r
+```
+
+#### step command
+
+Running the program step by step.
+When the method and the block will be invoked, the program will be stop at the first row.
+The program which is developed by C language will be ignored.
+
+period
@@ -359,6 +359,8 @@ MRB_API mrb_value mrb_obj_clone(mrb_state *mrb, mrb_value self);
 #define ISALPHA(c) (ISASCII(c) && isalpha((int)(unsigned char)(c)))
 #define ISDIGIT(c) (ISASCII(c) && isdigit((int)(unsigned char)(c)))
 #define ISXDIGIT(c) (ISASCII(c) && isxdigit((int)(unsigned char)(c)))
+#define ISBLANK(c) (ISASCII(c) && isblank((int)(unsigned char)(c)))
+#define ISCNTRL(c) (ISASCII(c) && iscntrl((int)(unsigned char)(c)))
 #define TOUPPER(c) (ISASCII(c) ? toupper((int)(unsigned char)(c)) : (c))
 #define TOLOWER(c) (ISASCII(c) ? tolower((int)(unsigned char)(c)) : (c))
 #endif
@@ -10,15 +10,15 @@
 #define MRUBY_RUBY_VERSION "1.9"
 #define MRUBY_RUBY_ENGINE  "mruby"

-#define MRUBY_VERSION "1.0.1"
+#define MRUBY_VERSION "1.1.0"
 #define MRUBY_RELEASE_MAJOR 1
-#define MRUBY_RELEASE_MINOR 0
+#define MRUBY_RELEASE_MINOR 1
 #define MRUBY_RELEASE_TEENY 1
-#define MRUBY_RELEASE_NO 10001
-#define MRUBY_RELEASE_DATE "2014-01-10"
+#define MRUBY_RELEASE_NO 10101
+#define MRUBY_RELEASE_DATE "2014-11-19"
 #define MRUBY_RELEASE_YEAR 2014
-#define MRUBY_RELEASE_MONTH 1
-#define MRUBY_RELEASE_DAY 10
+#define MRUBY_RELEASE_MONTH 11
+#define MRUBY_RELEASE_DAY 19

 #define MRUBY_BIRTH_YEAR 2010

@@ -4,6 +4,6 @@ MRuby::GemBox.new do |conf|

  Dir.glob("#{root}/mrbgems/mruby-*/mrbgem.rake") do |x|
    g = File.basename File.dirname x
-    conf.gem :core => g unless g =~ /^mruby-(print|sprintf)$/
+    conf.gem :core => g unless g =~ /^mruby-(print|sprintf|bin-debugger)$/
  end
 end
@@ -0,0 +1,286 @@
+require 'open3'
+require 'tempfile'
+
+class BinTest_MrubyBinDebugger
+  @debug1=false
+  @debug2=true
+  @debug3=true
+  def self.test(rubysource, testcase)
+    script, bin = Tempfile.new(['test', '.rb']), Tempfile.new(['test', '.mrb'])
+
+    # .rb
+    script.write rubysource
+    script.flush
+
+    # compile
+    `./bin/mrbc -g -o "#{bin.path}" "#{script.path}"`
+    
+    # add mrdb quit
+    testcase << {:cmd=>"quit"}
+
+    stdin_data = testcase.map{|t| t[:cmd]}.join("\n") << "\n"
+
+    ["bin/mrdb #{script.path}","bin/mrdb -b #{bin.path}"].each do |cmd|
+      o, s = Open3.capture2(cmd, :stdin_data => stdin_data)
+
+      exp_vals = testcase.map{|t| t.fetch(:exp, nil)}
+      unexp_vals = testcase.map{|t| t.fetch(:unexp, nil)}
+
+if @debug1
+  o.split("\n").each_with_index do |i,actual|
+    p [i,actual]
+  end
+end
+      # compare actual / expected
+      o.split("\n").each do |actual|
+        next if actual.empty?
+        exp = exp_vals.shift
+if @debug2
+  a = true
+  a = actual.include?(exp) unless exp.nil?
+  p [actual, exp] unless a
+end
+        assert_true actual.include?(exp) unless exp.nil?
+      end
+      # compare actual / unexpected
+      o.split("\n").each do |actual|
+        next if actual.empty?
+        unexp = unexp_vals.shift
+if @debug3
+  a = false
+  a = actual.include?(unexp) unless unexp.nil?
+  p [actual, unexp] if a
+end
+        assert_false actual.include?(unexp) unless unexp.nil?
+      end
+    end
+  end
+end
+
+INVCMD = "invalid command"
+
+assert('mruby-bin-debugger(mrdb) command line') do
+  # ruby source
+  src = "foo = 'foo'\n"
+
+  str = ""
+  103.times {
+    str += "1234567890"
+  }
+  cmd = "p a=#{str}"
+
+  # test case
+  BinTest_MrubyBinDebugger.test(src, [{:cmd=>cmd[0...1023], :unexp=>'command line too long.'}])
+  BinTest_MrubyBinDebugger.test(src, [{:cmd=>cmd[0...1024], :unexp=>'command line too long.'}])
+  BinTest_MrubyBinDebugger.test(src, [{:cmd=>cmd[0...1025], :exp=>'command line too long.'}])
+end
+
+assert('mruby-bin-debugger(mrdb) command: "break"') do
+  # ruby source
+  src = "foo = 'foo'\n"
+
+  # test case
+  tc = []
+  tc << {:cmd=>"b",     :unexp=>INVCMD}
+  tc << {:cmd=>"br",    :unexp=>INVCMD}
+  tc << {:cmd=>"brea",  :unexp=>INVCMD}
+  tc << {:cmd=>"break", :unexp=>INVCMD}
+  BinTest_MrubyBinDebugger.test(src, tc)
+
+  BinTest_MrubyBinDebugger.test(src, [{:cmd=>"bl",     :exp=>INVCMD}])
+  BinTest_MrubyBinDebugger.test(src, [{:cmd=>"breaka", :exp=>INVCMD}])
+end
+
+assert('mruby-bin-debugger(mrdb) command: "continue"') do
+  # ruby source
+  src = "foo = 'foo'\n"
+
+  # test case
+  BinTest_MrubyBinDebugger.test(src, [{:cmd=>"c",         :unexp=>INVCMD}])
+  BinTest_MrubyBinDebugger.test(src, [{:cmd=>"co",        :unexp=>INVCMD}])
+  BinTest_MrubyBinDebugger.test(src, [{:cmd=>"continu",   :unexp=>INVCMD}])
+  BinTest_MrubyBinDebugger.test(src, [{:cmd=>"continue",  :unexp=>INVCMD}])
+
+  BinTest_MrubyBinDebugger.test(src, [{:cmd=>"cn",        :exp=>INVCMD}])
+  BinTest_MrubyBinDebugger.test(src, [{:cmd=>"continuee", :exp=>INVCMD}])
+end
+
+assert('mruby-bin-debugger(mrdb) command: "delete"') do
+  # ruby source
+  src = "foo = 'foo'\n"
+
+  # test case
+  tc = []
+  tc << {:cmd=>"d 1",      :unexp=>INVCMD}
+  tc << {:cmd=>"de 1",     :unexp=>INVCMD}
+  tc << {:cmd=>"delet 1",  :unexp=>INVCMD}
+  tc << {:cmd=>"delete 1", :unexp=>INVCMD}
+  BinTest_MrubyBinDebugger.test(src, tc)
+
+  BinTest_MrubyBinDebugger.test(src, [{:cmd=>"dd 1",      :exp=>INVCMD}])
+  BinTest_MrubyBinDebugger.test(src, [{:cmd=>"deletee 1", :exp=>INVCMD}])
+end
+
+assert('mruby-bin-debugger(mrdb) command: "disable"') do
+  # ruby source
+  src = "foo = 'foo'\n"
+
+  # test case
+  tc = []
+  tc << {:cmd=>"dis",     :unexp=>INVCMD}
+  tc << {:cmd=>"disa",    :unexp=>INVCMD}
+  tc << {:cmd=>"disabl",  :unexp=>INVCMD}
+  tc << {:cmd=>"disable", :unexp=>INVCMD}
+  BinTest_MrubyBinDebugger.test(src, tc)
+
+  BinTest_MrubyBinDebugger.test(src, [{:cmd=>"di",       :exp=>INVCMD}])
+  BinTest_MrubyBinDebugger.test(src, [{:cmd=>"disb",     :exp=>INVCMD}])
+  BinTest_MrubyBinDebugger.test(src, [{:cmd=>"disablee", :exp=>INVCMD}])
+end
+
+assert('mruby-bin-debugger(mrdb) command: "enable"') do
+  # ruby source
+  src = "foo = 'foo'\n"
+
+  # test case
+  tc = []
+  tc << {:cmd=>"en",     :unexp=>INVCMD}
+  tc << {:cmd=>"ena",    :unexp=>INVCMD}
+  tc << {:cmd=>"enabl",  :unexp=>INVCMD}
+  tc << {:cmd=>"enable", :unexp=>INVCMD}
+  BinTest_MrubyBinDebugger.test(src, tc)
+
+  BinTest_MrubyBinDebugger.test(src, [{:cmd=>"e",       :exp=>INVCMD}])
+  BinTest_MrubyBinDebugger.test(src, [{:cmd=>"enb",     :exp=>INVCMD}])
+  BinTest_MrubyBinDebugger.test(src, [{:cmd=>"enablee", :exp=>INVCMD}])
+end
+
+assert('mruby-bin-debugger(mrdb) command: "eval"') do
+  # ruby source
+  src = "foo = 'foo'\n"
+
+  # test case
+  tc = []
+  tc << {:cmd=>"ev",   :unexp=>INVCMD}
+  tc << {:cmd=>"eva",  :unexp=>INVCMD}
+  tc << {:cmd=>"eval", :unexp=>INVCMD}
+  BinTest_MrubyBinDebugger.test(src, tc)
+
+  BinTest_MrubyBinDebugger.test(src, [{:cmd=>"e",     :exp=>INVCMD}])
+  BinTest_MrubyBinDebugger.test(src, [{:cmd=>"evl",   :exp=>INVCMD}])
+  BinTest_MrubyBinDebugger.test(src, [{:cmd=>"evall", :exp=>INVCMD}])
+end
+
+assert('mruby-bin-debugger(mrdb) command: "help"') do
+  # ruby source
+  src = "foo = 'foo'\n"
+
+  # test case
+  tc = []
+  tc << {:cmd=>"h",    :unexp=>INVCMD}
+  tc << {:cmd=>"he",   :unexp=>INVCMD}
+  tc << {:cmd=>"hel",  :unexp=>INVCMD}
+  tc << {:cmd=>"help", :unexp=>INVCMD}
+  BinTest_MrubyBinDebugger.test(src, tc)
+
+  BinTest_MrubyBinDebugger.test(src, [{:cmd=>"hl",    :exp=>INVCMD}])
+  BinTest_MrubyBinDebugger.test(src, [{:cmd=>"helpp", :exp=>INVCMD}])
+end
+
+assert('mruby-bin-debugger(mrdb) command: "info breakpoints"') do
+  # ruby source
+  src = "foo = 'foo'\n"
+
+  # test case
+  tc = []
+  tc << {:cmd=>"i b",              :unexp=>INVCMD}
+  tc << {:cmd=>"in  b",            :unexp=>INVCMD}
+  tc << {:cmd=>"i    br",          :unexp=>INVCMD}
+  tc << {:cmd=>"inf breakpoint",   :unexp=>INVCMD}
+  tc << {:cmd=>"info breakpoints", :unexp=>INVCMD}
+  BinTest_MrubyBinDebugger.test(src, tc)
+
+  BinTest_MrubyBinDebugger.test(src, [{:cmd=>"ii b",              :exp=>INVCMD}])
+  BinTest_MrubyBinDebugger.test(src, [{:cmd=>"i bb",              :exp=>INVCMD}])
+  BinTest_MrubyBinDebugger.test(src, [{:cmd=>"infoo breakpoints", :exp=>INVCMD}])
+  BinTest_MrubyBinDebugger.test(src, [{:cmd=>"info breakpointss", :exp=>INVCMD}])
+end
+
+assert('mruby-bin-debugger(mrdb) command: "list"') do
+  # ruby source
+  src = "foo = 'foo'\n"
+
+  # test case
+  tc = []
+  tc << {:cmd=>"l",    :unexp=>INVCMD}
+  tc << {:cmd=>"li",   :unexp=>INVCMD}
+  tc << {:cmd=>"lis",  :unexp=>INVCMD}
+  tc << {:cmd=>"list", :unexp=>INVCMD}
+  BinTest_MrubyBinDebugger.test(src, tc)
+
+  BinTest_MrubyBinDebugger.test(src, [{:cmd=>"ll",    :exp=>INVCMD}])
+  BinTest_MrubyBinDebugger.test(src, [{:cmd=>"listt", :exp=>INVCMD}])
+end
+
+assert('mruby-bin-debugger(mrdb) command: "print"') do
+  # ruby source
+  src = "foo = 'foo'\n"
+
+  # test case
+  tc = []
+  tc << {:cmd=>"p",     :unexp=>INVCMD}
+  tc << {:cmd=>"pr",    :unexp=>INVCMD}
+  tc << {:cmd=>"prin",  :unexp=>INVCMD}
+  tc << {:cmd=>"print", :unexp=>INVCMD}
+  BinTest_MrubyBinDebugger.test(src, tc)
+
+  BinTest_MrubyBinDebugger.test(src, [{:cmd=>"pp",     :exp=>INVCMD}])
+  BinTest_MrubyBinDebugger.test(src, [{:cmd=>"printt", :exp=>INVCMD}])
+end
+
+assert('mruby-bin-debugger(mrdb) command: "quit"') do
+  # ruby source
+  src = "foo = 'foo'\n"
+
+  # test case
+  BinTest_MrubyBinDebugger.test(src, [{:cmd=>"q",    :unexp=>INVCMD}])
+  BinTest_MrubyBinDebugger.test(src, [{:cmd=>"qu",   :unexp=>INVCMD}])
+  BinTest_MrubyBinDebugger.test(src, [{:cmd=>"qui",  :unexp=>INVCMD}])
+  BinTest_MrubyBinDebugger.test(src, [{:cmd=>"quit", :unexp=>INVCMD}])
+
+  BinTest_MrubyBinDebugger.test(src, [{:cmd=>"qq",    :exp=>INVCMD}])
+  BinTest_MrubyBinDebugger.test(src, [{:cmd=>"quitt", :exp=>INVCMD}])
+end
+
+assert('mruby-bin-debugger(mrdb) command: "run"') do
+  # ruby source
+  src = "foo = 'foo'\n"
+
+  # test case
+  BinTest_MrubyBinDebugger.test(src, [{:cmd=>"r",   :unexp=>INVCMD}])
+  BinTest_MrubyBinDebugger.test(src, [{:cmd=>"ru",  :unexp=>INVCMD}])
+  BinTest_MrubyBinDebugger.test(src, [{:cmd=>"run", :unexp=>INVCMD}])
+
+  BinTest_MrubyBinDebugger.test(src, [{:cmd=>"rr",   :exp=>INVCMD}])
+  BinTest_MrubyBinDebugger.test(src, [{:cmd=>"runn", :exp=>INVCMD}])
+end
+
+assert('mruby-bin-debugger(mrdb) command: "step"') do
+  # ruby source
+  src = <<"SRC"
+while true
+  foo = 'foo'
+end
+SRC
+
+  # test case
+  tc = []
+  tc << {:cmd=>"s",    :unexp=>INVCMD}
+  tc << {:cmd=>"st",   :unexp=>INVCMD}
+  tc << {:cmd=>"ste",  :unexp=>INVCMD}
+  tc << {:cmd=>"step", :unexp=>INVCMD}
+  BinTest_MrubyBinDebugger.test(src, tc)
+
+  BinTest_MrubyBinDebugger.test(src, [{:cmd=>"ss",    :exp=>INVCMD}])
+  BinTest_MrubyBinDebugger.test(src, [{:cmd=>"stepp", :exp=>INVCMD}])
+end
@@ -0,0 +1,701 @@
+require 'open3'
+require 'tempfile'
+
+class BinTest_MrubyBinDebugger
+  @debug1=false
+  @debug2=true
+  def self.test(rubysource, testcase)
+    script, bin = Tempfile.new(['test', '.rb']), Tempfile.new(['test', '.mrb'])
+
+    # .rb
+    script.write rubysource
+    script.flush
+
+    # compile
+    `./bin/mrbc -g -o "#{bin.path}" "#{script.path}"`
+    
+    # add mrdb quit
+    testcase << {:cmd=>"quit"}
+
+    stdin_data = testcase.map{|t| t[:cmd]}.join("\n") << "\n"
+
+    ["bin/mrdb #{script.path}","bin/mrdb -b #{bin.path}"].each do |cmd|
+      o, s = Open3.capture2(cmd, :stdin_data => stdin_data)
+
+      exp_vals = testcase.map{|t| t.fetch(:exp, nil)}
+=begin
+if @debug1
+  o.split("\n").each_with_index do |i,actual|
+    p [i,actual]
+  end
+end
+      # compare actual / expected
+      o.split("\n").each do |actual|
+        next if actual.empty?
+        exp = exp_vals.shift
+if @debug2
+  a = true
+  a = actual.include?(exp) unless exp.nil?
+  p [actual, exp] unless a
+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
+
+assert('mruby-bin-debugger(print) invalid arguments') do
+  # ruby source
+  src =  "foo = 'foo'\n"
+
+  # test case
+  tc = []
+  tc << {:cmd=>"p",   :exp=>"Parameter not specified."}
+
+  BinTest_MrubyBinDebugger.test(src, tc)
+end
+
+assert('mruby-bin-debugger(print) nomal') do
+  # ruby source
+  src = <<"SRC"
+foo = 'foo'
+bar = foo
+baz = bar
+SRC
+
+  # test case
+  tc = []
+  tc << {:cmd=>"s"}
+  tc << {:cmd=>"p (1+2)",   :exp=>'$1 = 3'}
+  tc << {:cmd=>"p foo",     :exp=>'$2 = "foo"'}
+  tc << {:cmd=>"p foo*=2",  :exp=>'$3 = "foofoo"'}
+  tc << {:cmd=>"s"}
+  tc << {:cmd=>"p bar",     :exp=>'$4 = "foofoo"'}
+
+  BinTest_MrubyBinDebugger.test(src, tc)
+end
+
+assert('mruby-bin-debugger(print) error') do
+  # ruby source
+  src =  "foo = 'foo'\n"
+
+  # test case
+  tc = []
+  tc << {:cmd=>"p (1+2",  :exp=>'$1 = SyntaxError'}
+  tc << {:cmd=>"p bar",   :exp=>'$2 = NoMethodError'}
+
+  BinTest_MrubyBinDebugger.test(src, tc)
+end
+
+# Kernel#instance_eval(string) does't work multiple statements.
+=begin
+assert('mruby-bin-debugger(print) multiple statements') do
+  # ruby source
+  src = <<"SRC"
+x = 0
+y = 0
+z = 0
+SRC
+
+  # test case
+  tc = []
+  tc << {:cmd=>"s",}
+  tc << {:cmd=>"p x=1;x+=2",  :exp=>"3"}
+  tc << {:cmd=>"s",}
+  tc << {:cmd=>"p x",         :exp=>"3"}
+
+  BinTest_MrubyBinDebugger.test(src, tc)
+end
+=end
+
+assert('mruby-bin-debugger(print) scope:top') do
+  # ruby source (bp is break point)
+  src = "bp=nil\n"
+
+  # test case
+  tc = []
+  tc << {:cmd=>"p self",  :exp=>'$1 = main'}
+
+  BinTest_MrubyBinDebugger.test(src, tc)
+end
+
+assert('mruby-bin-debugger(print) scope:class') do
+  # ruby source (bp is break point)
+  src = <<"SRC"
+class TestClassScope
+  bp = nil
+end
+SRC
+
+  # test case
+  tc = []
+  tc << {:cmd=>"s"}
+  tc << {:cmd=>"p self",  :exp=>'$1 = TestClassScope'}
+
+  BinTest_MrubyBinDebugger.test(src, tc)
+end
+
+assert('mruby-bin-debugger(print) scope:module') do
+  # ruby source (bp is break point)
+  src = <<"SRC"
+class TestModuleScope
+  bp = nil
+end
+SRC
+
+  # test case
+  tc = []
+  tc << {:cmd=>"s"}
+  tc << {:cmd=>"p self",  :exp=>'$1 = TestModuleScope'}
+
+  BinTest_MrubyBinDebugger.test(src, tc)
+end
+
+assert('mruby-bin-debugger(print) scope:instance method') do
+  # ruby source (bp is break point)
+  src = <<"SRC"
+class TestMethodScope
+  def m
+    bp = nil
+  end
+end
+TestMethodScope.new.m
+SRC
+
+  tc = []
+  tc << {:cmd=>"b 3"}
+  tc << {:cmd=>"r"}
+  tc << {:cmd=>"p self",  :exp=>'$1 = #<TestMethodScope:'}
+
+  BinTest_MrubyBinDebugger.test(src, tc)
+end
+
+assert('mruby-bin-debugger(print) scope:class method') do
+  # ruby source (bp is break point)
+  src = <<"SRC"
+class TestClassMethodScope
+  def self.cm
+    bp = nil
+  end
+end
+TestClassMethodScope.cm
+SRC
+
+  tc = []
+  tc << {:cmd=>"b 3"}
+  tc << {:cmd=>"r"}
+  tc << {:cmd=>"p self",  :exp=>'$1 = TestClassMethodScope'}
+
+  BinTest_MrubyBinDebugger.test(src, tc)
+end
+
+assert('mruby-bin-debugger(print) scope:block') do
+  # ruby source (bp is break point)
+  src = <<"SRC"
+1.times do
+  bp = nil
+end
+class TestBlockScope
+  1.times do
+    bp = nil
+  end
+  def m
+    1.times do
+      bp = nil
+    end
+  end
+end
+TestBlockScope.new.m
+SRC
+
+  tc = []
+  tc << {:cmd=>"b 2"}
+  tc << {:cmd=>"b 6"}
+  tc << {:cmd=>"b 10"}
+  tc << {:cmd=>"c"}
+  tc << {:cmd=>"p self", :exp=>'$1 = main'}
+  tc << {:cmd=>"c"}
+  tc << {:cmd=>"p self", :exp=>'$2 = TestBlockScope'}
+  tc << {:cmd=>"c"}
+  tc << {:cmd=>"p self", :exp=>'$3 = #<TestBlockScope:'}
+
+  BinTest_MrubyBinDebugger.test(src, tc)
+end
+
+assert('mruby-bin-debugger(print) same name:local variabe') do
+  # ruby source (bp is break point)
+  src = <<"SRC"
+lv = 'top'
+class TestLocalVariableName
+  lv = 'class'
+  def m
+    lv = 'instance method'
+    bp = nil
+  end
+  bp = nil
+end
+TestLocalVariableName.new.m
+bp = nil
+SRC
+
+  tc = []
+  tc << {:cmd=>"b 6"}
+  tc << {:cmd=>"b 8"}
+  tc << {:cmd=>"b 11"}
+  tc << {:cmd=>"r"}
+  tc << {:cmd=>"p lv", :exp=>'$1 = "class"'}
+  tc << {:cmd=>"c"}
+  tc << {:cmd=>"p lv", :exp=>'$2 = "instance method"'}
+  tc << {:cmd=>"c"}
+  tc << {:cmd=>"p lv", :exp=>'$3 = "top"'}
+
+  BinTest_MrubyBinDebugger.test(src, tc)
+end
+
+assert('mruby-bin-debugger(print) same name:instance variabe') do
+  # ruby source (bp is break point)
+  src = <<"SRC"
+@iv = 'top'
+class TestInstanceVariableName
+  def initialize(v)
+    @iv = v
+  end
+  def m
+    bp = nil
+  end
+end
+i1 = TestInstanceVariableName.new('instance1')
+i2 = TestInstanceVariableName.new('instance2')
+i1.m
+i2.m
+bp = nil
+SRC
+
+  tc = []
+  tc << {:cmd=>"b 7"}
+  tc << {:cmd=>"b 14"}
+  tc << {:cmd=>"r"}
+  tc << {:cmd=>"p @iv", :exp=>'$1 = "instance1"'}
+  tc << {:cmd=>"c"}
+  tc << {:cmd=>"p @iv", :exp=>'$2 = "instance2"'}
+  tc << {:cmd=>"c"}
+  tc << {:cmd=>"p @iv", :exp=>'$3 = "top"'}
+
+  BinTest_MrubyBinDebugger.test(src, tc)
+end
+
+# Kernel#instance_eval(string) does't work const.
+=begin
+assert('mruby-bin-debugger(print) same name:const') do
+  # ruby source (bp is break point)
+  src = <<"SRC"
+CONST='top'
+class TestConstNameSuperClass
+  CONST='super class'
+  def m
+    bp = nil
+  end
+end
+class TestConstNameSubClass < TestConstNameSuperClass
+  CONST='sub class'
+  def m
+    bp = nil
+  end
+end
+
+TestConstNameSuperClass.new.m()
+TestConstNameSubClass.new.m()
+bp = nil
+SRC
+
+  # todo: wait for 'break' to be implimented
+  tc = []
+  9.times { tc << {:cmd=>"s"} }
+  tc << {:cmd=>"p CONST", :exp=>"super class"}
+  3.times { tc << {:cmd=>"s"} }
+  tc << {:cmd=>"p CONST", :exp=>"sub class"}
+  1.times { tc << {:cmd=>"s"} }
+  tc << {:cmd=>"p CONST", :exp=>"top"}
+
+  BinTest_MrubyBinDebugger.test(src, tc)
+end
+=end
+
+assert('mruby-bin-debugger(print) Literal:Numeric') do
+  # ruby source
+  src =  "foo = 'foo'\n"
+
+  # test case
+  tc = []
+  tc << {:cmd=>"p 100",     :exp=>'$1 = 100'}
+  tc << {:cmd=>"p -0b100",  :exp=>'$2 = -4'}
+  tc << {:cmd=>"p +0100",   :exp=>'$3 = 64'}
+  tc << {:cmd=>"p 0x100",   :exp=>'$4 = 256'}
+  tc << {:cmd=>"p 1_234",   :exp=>'$5 = 1234'}
+  tc << {:cmd=>"p 0b1000_0000", :exp=>"$6 = #{0b1000_0000.to_s}"}
+  tc << {:cmd=>"p 0x1000_0000", :exp=>"$7 = #{0x1000_0000.to_s}"}
+
+  tc << {:cmd=>"p 3.14",    :exp=>'$8 = 3.14'}
+  tc << {:cmd=>"p -12.3",   :exp=>'$9 = -12.3'}
+  tc << {:cmd=>"p +12.000", :exp=>'$10 = 12.0'}
+  tc << {:cmd=>"p 1e4",     :exp=>'$11 = 10000.0'}
+  tc << {:cmd=>"p -0.1e-2", :exp=>'$12 = -0.001'}
+
+  BinTest_MrubyBinDebugger.test(src, tc)
+end
+
+assert('mruby-bin-debugger(print) Literal:String') do
+  # ruby source
+  src = <<"SRC"
+foo = 'foo'
+bar = "bar"
+baz = "baz"
+SRC
+
+  # test case
+  tc = []
+  tc << {:cmd=>"s"}
+  tc << {:cmd=>"s"}
+
+  tc << {:cmd=>'p "str"',        :exp=>'$1 = "str"'}
+  tc << {:cmd=>'p "s\tt\rr\n"',  :exp=>'$2 = "s\\tt\\rr\\n"'}
+  tc << {:cmd=>'p "\C-a\C-z"',   :exp=>'$3 = "\\001\\032"'}
+  tc << {:cmd=>'p "#{foo+bar}"', :exp=>'$4 = "foobar"'}
+
+  tc << {:cmd=>'p \'str\'',          :exp=>'$5 = "str"'}
+  tc << {:cmd=>'p \'s\\tt\\rr\\n\'', :exp=>'$6 = "s\\\\tt\\\\rr\\\\n"'}
+  tc << {:cmd=>'p \'\\C-a\\C-z\'',   :exp=>'$7 = "\\\\C-a\\\\C-z"'}
+  tc << {:cmd=>'p \'#{foo+bar}\'',   :exp=>'$8 = "#{foo+bar}"'}
+
+  tc << {:cmd=>'p %!str!',        :exp=>'$9 = "str"'}
+  tc << {:cmd=>'p %!s\tt\rr\n!',  :exp=>'$10 = "s\\tt\\rr\\n"'}
+  tc << {:cmd=>'p %!\C-a\C-z!',   :exp=>'$11 = "\\001\\032"'}
+  tc << {:cmd=>'p %!#{foo+bar}!', :exp=>'$12 = "foobar"'}
+
+  tc << {:cmd=>'p %Q!str!',        :exp=>'$13 = "str"'}
+  tc << {:cmd=>'p %Q!s\tt\rr\n!',  :exp=>'$14 = "s\\tt\\rr\\n"'}
+  tc << {:cmd=>'p %Q!\C-a\C-z!',   :exp=>'$15 = "\\001\\032"'}
+  tc << {:cmd=>'p %Q!#{foo+bar}!', :exp=>'$16 = "foobar"'}
+
+  tc << {:cmd=>'p %q!str!',          :exp=>'$17 = "str"'}
+  tc << {:cmd=>'p %q!s\\tt\\rr\\n!', :exp=>'$18 = "s\\\\tt\\\\rr\\\\n"'}
+  tc << {:cmd=>'p %q!\\C-a\\C-z!',   :exp=>'$19 = "\\\\C-a\\\\C-z"'}
+  tc << {:cmd=>'p %q!#{foo+bar}!',   :exp=>'$20 = "#{foo+bar}"'}
+
+  BinTest_MrubyBinDebugger.test(src, tc)
+end
+
+assert('mruby-bin-debugger(print) Literal:Array') do
+  # ruby source
+  src = <<"SRC"
+foo = 'foo'
+bar = "bar"
+baz = "baz"
+SRC
+
+  # test case
+  tc = []
+  tc << {:cmd=>"s"}
+  tc << {:cmd=>"s"}
+
+  tc << {:cmd=>'p []',                      :exp=>'$1 = []'}
+  tc << {:cmd=>'p [ 5,  12,   8,    10, ]', :exp=>'$2 = [5, 12, 8, 10]'}
+  tc << {:cmd=>'p [1,2.5,"#{foo+bar}"]',    :exp=>'$3 = [1, 2.5, "foobar"]'}
+  tc << {:cmd=>'p %w[3.14 A\ &\ B #{foo}]', :exp=>'$4 = ["3.14", "A & B", "#{foo}"]'}
+  tc << {:cmd=>'p %W[3.14 A\ &\ B #{foo}]', :exp=>'$5 = ["3.14", "A & B", "foo"]'}
+
+  BinTest_MrubyBinDebugger.test(src, tc)
+end
+
+assert('mruby-bin-debugger(print) Literal:Hash') do
+  # ruby source
+  src = <<"SRC"
+foo = 'foo'
+bar = "bar"
+baz = "baz"
+SRC
+
+  # test case
+  tc = []
+  tc << {:cmd=>"s"}
+  tc << {:cmd=>"s"}
+
+  tc << {:cmd=>'p {}',                              :exp=>'$1 = {}'}
+  tc << {:cmd=>'p {"one"=>1,"two"=>2}',             :exp=>'$2 = {"one"=>1, "two"=>2}'}
+  tc << {:cmd=>'p {:eins=>"1",   :zwei=>"2", }',    :exp=>'$3 = {:eins=>"1", :zwei=>"2"}'}
+  tc << {:cmd=>'p {uno:"one", dos: 2}',             :exp=>'$4 = {:uno=>"one", :dos=>2}'}
+  tc << {:cmd=>'p {"one"=>1, :zwei=>2, tres:3}',    :exp=>'$5 = {"one"=>1, :zwei=>2, :tres=>3}'}
+  tc << {:cmd=>'p {:foo=>"#{foo}",:bar=>"#{bar}"}', :exp=>'$6 = {:foo=>"foo", :bar=>"bar"}'}
+
+  BinTest_MrubyBinDebugger.test(src, tc)
+end
+
+assert('mruby-bin-debugger(print) Literal:Range') do
+  # ruby source
+  src = "foo = 'foo'\n"
+
+  # test case
+  tc = []
+  tc << {:cmd=>'p 1..10',    :exp=>'$1 = 1..10'}
+  tc << {:cmd=>'p 1...10',   :exp=>'$2 = 1...10'}
+  tc << {:cmd=>'p 100..10',  :exp=>'$3 = 100..10'}
+  tc << {:cmd=>'p 1 ... 10', :exp=>'$4 = 1...10'}
+
+  tc << {:cmd=>'p "1" .. "9"',  :exp=>'$5 = "1".."9"'}
+  tc << {:cmd=>'p "A" ... "Z"', :exp=>'$6 = "A"..."Z"'}
+
+  BinTest_MrubyBinDebugger.test(src, tc)
+end
+
+assert('mruby-bin-debugger(print) Literal:Symbol') do
+  # ruby source
+  src = <<"SRC"
+foo = 'foo'
+bar = "bar"
+baz = "baz"
+SRC
+
+  # test case
+  tc = []
+  tc << {:cmd=>"s"}
+  tc << {:cmd=>"s"}
+
+  tc << {:cmd=>'p :sym',          :exp=>'$1 = :sym'}
+  tc << {:cmd=>'p :"sd"',         :exp=>'$2 = :sd'}
+  tc << {:cmd=>"p :'ss'",         :exp=>'$3 = :ss'}
+  tc << {:cmd=>'p :"123"',        :exp=>'$4 = :"123"'}
+  tc << {:cmd=>'p :"#{foo} baz"', :exp=>'$5 = :"foo baz"'}
+  tc << {:cmd=>'p %s!symsym!',    :exp=>'$6 = :symsym'}
+
+  BinTest_MrubyBinDebugger.test(src, tc)
+end
+
+assert('mruby-bin-debugger(print) Unary operation') do
+  # ruby source
+  src = "foo = 'foo'\n"
+
+  # test case
+  tc = []
+  tc << {:cmd=>'p +10',    :exp=>'$1 = 10'}
+  tc << {:cmd=>'p -100',   :exp=>'$2 = -100'}
+  tc << {:cmd=>'p !true',  :exp=>'$3 = false'}
+  tc << {:cmd=>'p !false', :exp=>'$4 = true'}
+  tc << {:cmd=>'p !nil',   :exp=>'$5 = true'}
+  tc << {:cmd=>'p !1',     :exp=>'$6 = false'}
+
+  BinTest_MrubyBinDebugger.test(src, tc)
+end
+
+assert('mruby-bin-debugger(print) Binary operation') do
+  # ruby source
+  src = <<"SRC"
+CONST = 100
+a,b,c = 1, 5, 8
+foo,bar,baz = 'foo','bar','baz'
+ary = []
+SRC
+
+  # test case
+  tc = []
+  tc << {:cmd=>'s'}
+  tc << {:cmd=>'s'}
+  tc << {:cmd=>'s'}
+
+  tc << {:cmd=>'p a+1',   :exp=>'$1 = 2'}
+  tc << {:cmd=>'p 2-b',   :exp=>'$2 = -3'}
+  tc << {:cmd=>'p c * 3', :exp=>'$3 = 24'}
+  tc << {:cmd=>'p a/b',   :exp=>'$4 = 0.2'}
+  tc << {:cmd=>'p c%b',   :exp=>'$5 = 3'}
+  tc << {:cmd=>'p 2**10', :exp=>'$6 = 1024'}
+  tc << {:cmd=>'p ~3',    :exp=>'$7 = -4'}
+
+  tc << {:cmd=>'p 1<<2',  :exp=>'$8 = 4'}
+  tc << {:cmd=>'p 64>>5', :exp=>'$9 = 2'}
+
+  tc << {:cmd=>'p a|c',   :exp=>'$10 = 9'}
+  tc << {:cmd=>'p a&b',   :exp=>'$11 = 1'}
+  tc << {:cmd=>'p a^b',   :exp=>'$12 = 4'}
+
+  tc << {:cmd=>'p a>b',   :exp=>'$13 = false'}
+  tc << {:cmd=>'p a<b',   :exp=>'$14 = true'}
+  tc << {:cmd=>'p b>=5',  :exp=>'$15 = true'}
+  tc << {:cmd=>'p b<=5',  :exp=>'$16 = true'}
+
+  tc << {:cmd=>'p "A"<=>"B"', :exp=>'$17 = -1'}
+  tc << {:cmd=>'p "A"=="B"',  :exp=>'$18 = false'}
+  tc << {:cmd=>'p "A"==="B"', :exp=>'$19 = false'}
+  tc << {:cmd=>'p "A"!="B"',  :exp=>'$20 = true'}
+
+  tc << {:cmd=>'p false || true', :exp=>'$21 = true'}
+  tc << {:cmd=>'p false && true', :exp=>'$22 = false'}
+
+  tc << {:cmd=>'p not nil',        :exp=>'$23 = true'}
+  tc << {:cmd=>'p false or true',  :exp=>'$24 = true'}
+  tc << {:cmd=>'p false and true', :exp=>'$25 = false'}
+
+  BinTest_MrubyBinDebugger.test(src, tc)
+end
+
+assert('mruby-bin-debugger(print) Ternary operation') do
+  # ruby source
+  src = <<"SRC"
+CONST = 100
+a,b,c = 1, 5, -10
+foo,bar,baz = 'foo','bar','baz'
+ary = []
+SRC
+
+  # test case
+  tc = []
+  tc << {:cmd=>'s'}
+  tc << {:cmd=>'s'}
+  tc << {:cmd=>'s'}
+
+  tc << {:cmd=>'p (a < b) ? a : b',          :exp=>'$1 = 1'}
+  tc << {:cmd=>'p (a > b) ? a : b',          :exp=>'$2 = 5'}
+  tc << {:cmd=>'p true ? "true" : "false"',  :exp=>'$3 = "true"'}
+  tc << {:cmd=>'p false ? "true" : "false"', :exp=>'$4 = "false"'}
+  tc << {:cmd=>'p nil ? "true" : "false"',   :exp=>'$5 = "false"'}
+
+  BinTest_MrubyBinDebugger.test(src, tc)
+end
+
+assert('mruby-bin-debugger(print) Substitution:simple') do
+  # ruby source
+  src = <<"SRC"
+CONST = 100
+a,b,c = 1, 5, -10
+foo,bar,baz = 'foo','bar','baz'
+ary = []
+SRC
+
+  # test case
+  tc = []
+  tc << {:cmd=>'s'}
+  tc << {:cmd=>'s'}
+  tc << {:cmd=>'s'}
+
+  tc << {:cmd=>'p a=2',               :exp=>'$1 = 2'}
+  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 = NoMethodError'}
+
+  BinTest_MrubyBinDebugger.test(src, tc)
+end
+
+assert('mruby-bin-debugger(print) Substitution:self') do
+  # ruby source
+  src = <<"SRC"
+CONST = 100
+a,b,c = 1, 5, -10
+foo,bar,baz = 'foo','bar','baz'
+ary = []
+SRC
+
+  # test case
+  tc = []
+  tc << {:cmd=>'s'}
+  tc << {:cmd=>'s'}
+  tc << {:cmd=>'s'}
+
+  tc << {:cmd=>'p a+=9',   :exp=>'$1 = 10'}
+  tc << {:cmd=>'p b-=c',   :exp=>'$2 = 15'}
+  tc << {:cmd=>'p bar*=2', :exp=>'$3 = "barbar"'}
+  tc << {:cmd=>'p a/=4',   :exp=>'$4 = 2.5'}
+  tc << {:cmd=>'p c%=4',   :exp=>'$5 = 2'}
+
+  tc << {:cmd=>'p b&=0b0101', :exp=>'$6 = 5'}
+  tc << {:cmd=>'p c|=0x10',   :exp=>'$7 = 18'}
+
+  tc << {:cmd=>'p "#{a} #{b} #{c}"',     :exp=>'$8 = "2.5 5 18"'}
+  tc << {:cmd=>'p "#{foo}#{bar}#{baz}"', :exp=>'$9 = "foobarbarbaz"'}
+
+  tc << {:cmd=>'p a,b,c=[10,20,30]',:exp=>'$10 = [10, 20, 30]'}
+  tc << {:cmd=>'p [a,b,c]',         :exp=>'$11 = [10, 20, 30]'}
+  tc << {:cmd=>'p a,b=b,a',         :exp=>'$12 = [20, 10]'}
+  tc << {:cmd=>'p [a,b]',           :exp=>'$13 = [20, 10]'}
+
+  tc << {:cmd=>'p undefined=-1',    :exp=>'$14 = -1'}
+  tc << {:cmd=>'p "#{undefined}"',  :exp=>'$15 = NoMethodError'}
+
+  BinTest_MrubyBinDebugger.test(src, tc)
+end
+
+assert('mruby-bin-debugger(print) Substitution:multiple') do
+  # ruby source
+  src = <<"SRC"
+CONST = 100
+a,b,c = 1, 5, -10
+foo,bar,baz = 'foo','bar','baz'
+ary = []
+SRC
+
+  # test case
+  tc = []
+  tc << {:cmd=>'s'}
+  tc << {:cmd=>'s'}
+  tc << {:cmd=>'s'}
+
+  tc << {:cmd=>'p a,b=[10,20]',   :exp=>'$1 = [10, 20]'}
+  tc << {:cmd=>'p [a,b,c]',       :exp=>'$2 = [10, 20, -10]'}
+
+  tc << {:cmd=>'p foo,bar=["FOO","BAR","BAZ"]', :exp=>'$3 = ["FOO", "BAR", "BAZ"]'}
+  tc << {:cmd=>'p [foo,bar,baz]', :exp=>'$4 = ["FOO", "BAR", "baz"]'}
+
+  tc << {:cmd=>'p a,foo=foo,a',   :exp=>'$5 = ["FOO", 10]'}
+  tc << {:cmd=>'p [a,foo]',       :exp=>'$6 = ["FOO", 10]'}
+
+#  tc << {:cmd=>'p a,*b=[123, 456, 789]'}
+#  tc << {:cmd=>'p [a,b]',       :exp=>'[123, [456, 789]]'}
+
+  BinTest_MrubyBinDebugger.test(src, tc)
+end
+
+assert('mruby-bin-debugger(print) Substitution:self') do
+  # ruby source
+  src = <<"SRC"
+CONST = 100
+a,b,c = 1, 5, -10
+foo,bar,baz = 'foo','bar','baz'
+ary = []
+SRC
+
+  # test case
+  tc = []
+  tc << {:cmd=>'s'}
+  tc << {:cmd=>'s'}
+  tc << {:cmd=>'s'}
+
+  tc << {:cmd=>'p a+=9',   :exp=>'$1 = 10'}
+  tc << {:cmd=>'p b-=c',   :exp=>'$2 = 15'}
+  tc << {:cmd=>'p bar*=2', :exp=>'$3 = "barbar"'}
+  tc << {:cmd=>'p a/=4',   :exp=>'$4 = 2.5'}
+  tc << {:cmd=>'p c%=4',   :exp=>'$5 = 2'}
+
+  tc << {:cmd=>'p b&=0b0101', :exp=>'$6 = 5'}
+  tc << {:cmd=>'p c|=0x10',   :exp=>'$7 = 18'}
+
+  tc << {:cmd=>'p "#{a} #{b} #{c}"',     :exp=>'$8 = "2.5 5 18"'}
+  tc << {:cmd=>'p "#{foo}#{bar}#{baz}"', :exp=>'$9 = "foobarbarbaz"'}
+
+  tc << {:cmd=>'p a,b,c=[10,20,30]',:exp=>'$10 = [10, 20, 30]'}
+  tc << {:cmd=>'p [a,b,c]',         :exp=>'$11 = [10, 20, 30]'}
+  tc << {:cmd=>'p a,b=b,a',         :exp=>'$12 = [20, 10]'}
+  tc << {:cmd=>'p [a,b]',           :exp=>'$13 = [20, 10]'}
+
+  tc << {:cmd=>'p undefined=-1',    :exp=>'$14 = -1'}
+  tc << {:cmd=>'p "#{undefined}"',  :exp=>'$15 = NoMethodError'}
+
+  BinTest_MrubyBinDebugger.test(src, tc)
+end
+
@@ -0,0 +1,9 @@
+MRuby::Gem::Specification.new('mruby-bin-debugger') do |spec|
+  spec.license = 'MIT'
+  spec.author  = 'mruby developers'
+  spec.summary = 'mruby debuggeer command'
+
+  spec.add_dependency('mruby-eval', :core => 'mruby-eval')
+
+  spec.bins = %w(mrdb)
+end
@@ -0,0 +1,529 @@
+/*
+** apibreak.c
+**
+*/
+
+#include <string.h>
+#include "mruby.h"
+#include "mruby/irep.h"
+#include "mrdb.h"
+#include "mruby/debug.h"
+#include "mruby/opcode.h"
+#include "mruby/class.h"
+#include "mruby/proc.h"
+#include "mruby/variable.h"
+#include "mrdberror.h"
+#include "apibreak.h"
+
+#define MAX_BREAKPOINTNO (MAX_BREAKPOINT * 1024)
+#define MRB_DEBUG_BP_FILE_OK   (0x0001)
+#define MRB_DEBUG_BP_LINENO_OK (0x0002)
+
+static uint16_t
+check_lineno( mrb_irep_debug_info_file *info_file, uint16_t lineno )
+{
+  uint32_t count = info_file->line_entry_count;
+  uint16_t l_idx;
+
+  if( info_file->line_type == mrb_debug_line_ary ) {
+    for (l_idx = 0; l_idx < count; ++l_idx) {
+      if(lineno == info_file->lines.ary[l_idx]) {
+        return lineno;
+      }
+    }
+  } else {
+    for (l_idx = 0; l_idx < count; ++l_idx) {
+      if(lineno == info_file->lines.flat_map[l_idx].line) {
+        return lineno;
+      }
+    }
+  }
+
+  return 0;
+}
+
+static int32_t
+get_break_index( mrb_debug_context *dbg, int32_t bpno )
+{
+  uint32_t i;
+  int32_t index;
+  char hit = FALSE;
+
+  for(i = 0 ; i < dbg->bpnum; i++) {
+    if(dbg->bp[i].bpno == bpno) {
+      hit = TRUE;
+      index = i;
+      break;
+    }
+  }
+
+  if(hit == FALSE) {
+    return MRB_DEBUG_BREAK_INVALID_NO;
+  }
+
+  return index;
+}
+
+static void
+free_breakpoint( mrb_state *mrb, mrb_debug_breakpoint *bp )
+{
+  switch(bp->type) {
+    case MRB_DEBUG_BPTYPE_LINE:
+      mrb_free(mrb, (void*)bp->point.linepoint.file);
+      break;
+    case MRB_DEBUG_BPTYPE_METHOD:
+      mrb_free(mrb, (void*)bp->point.methodpoint.method_name);
+      if(bp->point.methodpoint.class_name != NULL) {
+        mrb_free(mrb, (void*)bp->point.methodpoint.class_name);
+      }
+      break;
+    default:
+      break;
+  }
+}
+
+static uint16_t
+check_file_lineno( struct mrb_irep *irep, const char *file, uint16_t lineno )
+{
+  mrb_irep_debug_info_file *info_file;
+  uint16_t result = 0;
+  uint16_t f_idx;
+  uint16_t fix_lineno;
+  uint16_t i;
+
+  for (f_idx = 0; f_idx < irep->debug_info->flen; ++f_idx) {
+    info_file = irep->debug_info->files[f_idx];
+    if(!strcmp(info_file->filename, file)) {
+      result = MRB_DEBUG_BP_FILE_OK;
+
+      fix_lineno = check_lineno( info_file, lineno );
+      if(fix_lineno != 0) { 
+        return result | MRB_DEBUG_BP_LINENO_OK;
+      }
+    }
+    for ( i=0; i < irep->rlen; ++i ) {
+      result  |= check_file_lineno(irep->reps[i], file, lineno);
+      if(result == (MRB_DEBUG_BP_FILE_OK | MRB_DEBUG_BP_LINENO_OK)) {
+        return result;
+      }
+    }
+  }
+  return result;
+}
+
+static const char*
+get_class_name( mrb_state *mrb, struct RClass *class_obj )
+{
+  struct RClass *outer;
+  mrb_sym class_sym;
+
+  outer = mrb_class_outer_module(mrb, class_obj);
+  class_sym = mrb_class_sym(mrb, class_obj, outer);
+  return mrb_sym2name(mrb, class_sym);
+}
+
+static int32_t
+compare_break_method( mrb_state *mrb, mrb_debug_breakpoint *bp, struct RClass *class_obj, mrb_sym method_sym, mrb_bool* isCfunc )
+{
+  const char* class_name;
+  const char* method_name;
+  struct RProc* m;
+  struct RClass* sc;
+  const char* sn;
+  mrb_sym ssym;
+  mrb_debug_methodpoint *method_p;
+  mrb_bool is_defined;
+
+  method_name = mrb_sym2name(mrb, method_sym);
+
+  method_p = &bp->point.methodpoint;
+  if(strcmp(method_p->method_name, method_name) == 0) {
+    class_name = get_class_name(mrb, class_obj);
+    if(class_name == NULL) {
+      if(method_p->class_name == NULL) {
+        return bp->bpno;
+      }
+    }
+    else if(method_p->class_name != NULL) {
+      m = mrb_method_search_vm(mrb, &class_obj, method_sym);
+      if(m == NULL) {
+        return MRB_DEBUG_OK;
+      }
+      if(MRB_PROC_CFUNC_P(m)) {
+        *isCfunc = TRUE;
+      }
+
+      is_defined = mrb_class_defined(mrb, method_p->class_name);
+      if(is_defined == FALSE) {
+        return MRB_DEBUG_OK;
+      }
+
+      sc = mrb_class_get(mrb, method_p->class_name);
+      ssym = mrb_symbol(mrb_check_intern_cstr(mrb, method_p->method_name));
+      m = mrb_method_search_vm(mrb, &sc, ssym);
+      if(m == NULL) {
+        return MRB_DEBUG_OK;
+      }
+
+      class_name = get_class_name(mrb, class_obj);
+      sn = get_class_name(mrb, sc);
+      if(strcmp(sn, class_name) == 0) {
+        return bp->bpno;
+      }
+    }
+  }
+  return MRB_DEBUG_OK;
+}
+
+int32_t
+mrb_debug_set_break_line( mrb_state *mrb, mrb_debug_context *dbg, const char *file, uint16_t lineno)
+{
+  int32_t index;
+  char* set_file;
+  uint16_t result;
+
+  if((mrb == NULL)||(dbg == NULL)||(file == NULL)) {
+    return MRB_DEBUG_INVALID_ARGUMENT;
+  }
+
+  if(dbg->bpnum >= MAX_BREAKPOINT) {
+    return MRB_DEBUG_BREAK_NUM_OVER;
+  }
+
+  if(dbg->next_bpno > MAX_BREAKPOINTNO) {
+    return MRB_DEBUG_BREAK_NO_OVER;
+  }
+
+  /* file and lineno check (line type mrb_debug_line_ary only.) */
+  result = check_file_lineno( dbg->root_irep, file, lineno );
+  if(result == 0) {
+    return MRB_DEBUG_BREAK_INVALID_FILE;
+  }else if(result == MRB_DEBUG_BP_FILE_OK) {
+    return MRB_DEBUG_BREAK_INVALID_LINENO;
+  } 
+
+  set_file = mrb_malloc(mrb, strlen(file) + 1);
+  if(set_file == NULL) {
+    return MRB_DEBUG_NOBUF;
+  }
+
+  index = dbg->bpnum;
+  dbg->bp[index].bpno = dbg->next_bpno;
+  dbg->next_bpno++;
+  dbg->bp[index].enable = TRUE;
+  dbg->bp[index].type = MRB_DEBUG_BPTYPE_LINE;
+  dbg->bp[index].point.linepoint.lineno = lineno;
+  dbg->bpnum++;
+
+  strncpy(set_file, file, strlen(file) + 1);
+
+  dbg->bp[index].point.linepoint.file = set_file;
+
+  return dbg->bp[index].bpno;
+}
+
+int32_t
+mrb_debug_set_break_method( mrb_state *mrb, mrb_debug_context *dbg, const char *class_name, const char *method_name )
+{
+  int32_t index;
+  char* set_class;
+  char* set_method;
+
+  if((mrb == NULL) || (dbg == NULL) || (method_name == NULL)) {
+    return MRB_DEBUG_INVALID_ARGUMENT;
+  }
+
+  if(dbg->bpnum >= MAX_BREAKPOINT) {
+    return MRB_DEBUG_BREAK_NUM_OVER;
+  }
+
+  if(dbg->next_bpno > MAX_BREAKPOINTNO) {
+    return MRB_DEBUG_BREAK_NO_OVER;
+  }
+
+  if(class_name != NULL) {
+    set_class = mrb_malloc(mrb, strlen(class_name) + 1);
+    if(set_class == NULL) {
+      return MRB_DEBUG_NOBUF;
+    }
+    
+    strncpy(set_class, class_name, strlen(class_name) + 1);
+  }
+  else {
+    set_class = NULL;
+  }
+
+  set_method = mrb_malloc(mrb, strlen(method_name) + 1);
+  if(set_method == NULL) {
+    if(set_class != NULL) {
+      mrb_free(mrb, (void*)set_class);
+    }
+    return MRB_DEBUG_NOBUF;
+  }
+
+  strncpy(set_method, method_name, strlen(method_name) + 1);
+
+  index = dbg->bpnum;
+  dbg->bp[index].bpno = dbg->next_bpno;
+  dbg->next_bpno++;
+  dbg->bp[index].enable = TRUE;
+  dbg->bp[index].type = MRB_DEBUG_BPTYPE_METHOD;
+  dbg->bp[index].point.methodpoint.method_name = set_method;
+  dbg->bp[index].point.methodpoint.class_name = set_class;
+  dbg->bpnum++;
+
+  return dbg->bp[index].bpno;
+}
+
+int32_t
+mrb_debug_get_breaknum( mrb_state *mrb, mrb_debug_context *dbg )
+{
+  if((mrb == NULL) || (dbg == NULL)) {
+    return MRB_DEBUG_INVALID_ARGUMENT;
+  }
+
+  return dbg->bpnum;
+}
+
+int32_t 
+mrb_debug_get_break_all( mrb_state *mrb, mrb_debug_context *dbg, uint32_t size, mrb_debug_breakpoint *bp )
+{
+  uint32_t get_size = 0;
+
+  if((mrb == NULL) || (dbg == NULL) || (bp == NULL)) {
+    return MRB_DEBUG_INVALID_ARGUMENT;
+  }
+
+  if(dbg->bpnum >= size) {
+    get_size = size;
+  }
+  else {
+    get_size = dbg->bpnum;
+  }
+
+  memcpy(bp, dbg->bp, sizeof(mrb_debug_breakpoint) * get_size);
+
+  return get_size;
+}
+
+int32_t
+mrb_debug_get_break( mrb_state *mrb, mrb_debug_context *dbg, uint32_t bpno, mrb_debug_breakpoint *bp )
+{
+  uint32_t index;
+
+  if((mrb == NULL) || (dbg == NULL) || (bp == NULL)) {
+    return MRB_DEBUG_INVALID_ARGUMENT;
+  }
+
+  index = get_break_index(dbg, bpno);
+  if(index == MRB_DEBUG_BREAK_INVALID_NO) {
+    return MRB_DEBUG_BREAK_INVALID_NO;
+  }
+
+  bp->bpno = dbg->bp[index].bpno;
+  bp->enable = dbg->bp[index].enable;
+  bp->point = dbg->bp[index].point;
+  bp->type = dbg->bp[index].type;
+
+  return 0;
+}
+
+int32_t 
+mrb_debug_delete_break( mrb_state *mrb, mrb_debug_context *dbg, uint32_t bpno )
+{
+  uint32_t i;
+  int32_t index;
+
+  if((mrb == NULL) ||(dbg == NULL)) {
+    return MRB_DEBUG_INVALID_ARGUMENT;
+  }
+
+  index = get_break_index(dbg, bpno);
+  if(index == MRB_DEBUG_BREAK_INVALID_NO) {
+    return MRB_DEBUG_BREAK_INVALID_NO;
+  }
+
+  free_breakpoint(mrb, &dbg->bp[index]);
+
+  for(i = index ; i < dbg->bpnum; i++) {
+    if(dbg->bp[i + 1].type == MRB_DEBUG_BPTYPE_NONE) {
+      memset(&dbg->bp[i], 0, sizeof(mrb_debug_breakpoint));
+    }
+    else {
+      memcpy(&dbg->bp[i], &dbg->bp[i + 1], sizeof(mrb_debug_breakpoint));
+    }
+  }
+
+  dbg->bpnum--;
+
+  return MRB_DEBUG_OK;
+}
+
+int32_t 
+mrb_debug_delete_break_all( mrb_state *mrb, mrb_debug_context *dbg )
+{
+  uint32_t i;
+
+  if((mrb == NULL) || (dbg == NULL)) {
+    return MRB_DEBUG_INVALID_ARGUMENT;
+  }
+
+  for(i = 0 ; i < dbg->bpnum ; i++) {
+    free_breakpoint(mrb, &dbg->bp[i]);
+  }
+
+  dbg->bpnum = 0;
+
+  return MRB_DEBUG_OK;
+}
+
+int32_t 
+mrb_debug_enable_break( mrb_state *mrb, mrb_debug_context *dbg, uint32_t bpno )
+{
+  int32_t index = 0;
+
+  if((mrb == NULL) || (dbg == NULL)) {
+    return MRB_DEBUG_INVALID_ARGUMENT;
+  }
+
+  index = get_break_index(dbg, bpno);
+  if(index == MRB_DEBUG_BREAK_INVALID_NO) {
+    return MRB_DEBUG_BREAK_INVALID_NO;
+  }
+
+  dbg->bp[index].enable = TRUE;
+
+  return MRB_DEBUG_OK;
+}
+
+int32_t
+mrb_debug_enable_break_all( mrb_state *mrb, mrb_debug_context *dbg )
+{
+  uint32_t i;
+
+  if((mrb == NULL) || (dbg == NULL)) {
+    return MRB_DEBUG_INVALID_ARGUMENT;
+  }
+
+  for(i = 0 ; i < dbg->bpnum; i++) {
+    dbg->bp[i].enable = TRUE;
+  }
+
+  return MRB_DEBUG_OK;
+}
+
+int32_t 
+mrb_debug_disable_break( mrb_state *mrb, mrb_debug_context *dbg, uint32_t bpno )
+{
+  int32_t index = 0;
+
+  if((mrb == NULL) || (dbg == NULL)) {
+    return MRB_DEBUG_INVALID_ARGUMENT;
+  }
+
+  index = get_break_index(dbg, bpno);
+  if(index == MRB_DEBUG_BREAK_INVALID_NO) {
+    return MRB_DEBUG_BREAK_INVALID_NO;
+  }
+
+  dbg->bp[index].enable = FALSE;
+
+  return MRB_DEBUG_OK;
+}
+
+int32_t 
+mrb_debug_disable_break_all( mrb_state *mrb, mrb_debug_context *dbg )
+{
+  uint32_t i;
+
+  if((mrb == NULL) || (dbg == NULL)) {
+    return MRB_DEBUG_INVALID_ARGUMENT;
+  }
+
+  for(i = 0 ; i < dbg->bpnum; i++) {
+    dbg->bp[i].enable = FALSE;
+  }
+
+  return MRB_DEBUG_OK;
+}
+
+static mrb_bool
+check_start_pc_for_line( mrb_irep *irep, mrb_code *pc, uint16_t line )
+{
+  if( pc > irep->iseq ) {
+    if( line == mrb_debug_get_line(irep, (uint32_t)(pc - irep->iseq - 1))) {
+      return FALSE;
+    }
+  }
+  return TRUE;
+}
+
+int32_t
+mrb_debug_check_breakpoint_line( mrb_state *mrb, mrb_debug_context *dbg, const char *file, uint16_t line )
+{
+  mrb_debug_breakpoint *bp;
+  mrb_debug_linepoint *line_p;
+  int i;
+
+  if((mrb == NULL) || (dbg == NULL) || (file == NULL) || (line <= 0)) {
+    return MRB_DEBUG_INVALID_ARGUMENT;
+  }
+
+  if(!check_start_pc_for_line(dbg->irep, dbg->pc, line)) {
+    return MRB_DEBUG_OK;
+  }
+
+  bp = dbg->bp;
+  for(i=0; i<MAX_BREAKPOINT; i++) {
+    switch (bp->type) {
+      case MRB_DEBUG_BPTYPE_LINE:
+        if(bp->enable == TRUE) {
+          line_p = &bp->point.linepoint;
+          if((strcmp(line_p->file, file) == 0) && (line_p->lineno == line)) {
+            return bp->bpno;
+          }
+        }
+        break;
+      case MRB_DEBUG_BPTYPE_METHOD:
+        break;
+      case MRB_DEBUG_BPTYPE_NONE:
+      default:
+        return MRB_DEBUG_OK;
+    }
+    bp++;
+  }
+  return MRB_DEBUG_OK;
+}
+
+
+int32_t 
+mrb_debug_check_breakpoint_method( mrb_state *mrb, mrb_debug_context *dbg, struct RClass *class_obj, mrb_sym method_sym, mrb_bool* isCfunc )
+{
+  mrb_debug_breakpoint *bp;
+  int32_t bpno;
+  int i;
+
+  if((mrb == NULL) || (dbg == NULL) || (class_obj == NULL)) {
+    return MRB_DEBUG_INVALID_ARGUMENT;
+  }
+
+  bp = dbg->bp;
+  for(i=0; i<MAX_BREAKPOINT; i++) {
+    if(bp->type == MRB_DEBUG_BPTYPE_METHOD) {
+      if(bp->enable == TRUE) {
+        bpno = compare_break_method(mrb, bp, class_obj, method_sym, isCfunc);
+        if(bpno > 0) {
+          return bpno;
+        }
+      }
+    }
+    else if(bp->type == MRB_DEBUG_BPTYPE_NONE) {
+      break;
+    }
+    bp++;
+  }
+
+  return 0;
+}
+
+
@@ -0,0 +1,26 @@
+/*
+** apibreak.h
+**
+*/
+
+#ifndef APIBREAK_H_
+#define APIBREAK_H_
+
+#include "mruby.h"
+#include "mrdb.h"
+
+int32_t mrb_debug_set_break_line( mrb_state *, mrb_debug_context *, const char *, uint16_t );
+int32_t mrb_debug_set_break_method( mrb_state *, mrb_debug_context *, const char *, const char * );
+int32_t mrb_debug_get_breaknum( mrb_state *, mrb_debug_context * );
+int32_t mrb_debug_get_break_all( mrb_state *, mrb_debug_context *, uint32_t, mrb_debug_breakpoint bp[]);
+int32_t mrb_debug_get_break( mrb_state *, mrb_debug_context *, uint32_t, mrb_debug_breakpoint * );
+int32_t mrb_debug_delete_break( mrb_state *, mrb_debug_context *, uint32_t );
+int32_t mrb_debug_delete_break_all( mrb_state *, mrb_debug_context * );
+int32_t mrb_debug_enable_break( mrb_state *, mrb_debug_context *, uint32_t );
+int32_t mrb_debug_enable_break_all( mrb_state *, mrb_debug_context * );
+int32_t mrb_debug_disable_break( mrb_state *, mrb_debug_context *, uint32_t );
+int32_t mrb_debug_disable_break_all( mrb_state *, mrb_debug_context * );
+int32_t mrb_debug_check_breakpoint_line( mrb_state *, mrb_debug_context *, const char *, uint16_t );
+int32_t mrb_debug_check_breakpoint_method( mrb_state *, mrb_debug_context *, struct RClass *, mrb_sym, mrb_bool* );
+
+#endif /* APIBREAK_H_ */
@@ -0,0 +1,232 @@
+/*
+ * apilist.c
+ */
+
+#include <ctype.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "mrdb.h"
+#include "mrdberror.h"
+#include "apilist.h"
+#include "mruby/compile.h"
+#include "mruby/irep.h"
+#include "mruby/debug.h"
+
+#define LINE_BUF_SIZE MAX_COMMAND_LINE
+
+typedef struct source_file {
+  char *path;
+  uint16_t lineno;
+  FILE *fp;
+} source_file;
+
+static void
+source_file_free(mrb_state *mrb, source_file *file)
+{
+  if (file != NULL) {
+    if (file->path != NULL) {
+      mrb_free(mrb, file->path);
+    }
+    if (file->fp != NULL) {
+      fclose(file->fp);
+      file->fp = NULL;
+    }
+    mrb_free(mrb, file);
+  }
+}
+
+static char*
+build_path(mrb_state *mrb, const char *dir, const char *base)
+{
+  int len;
+  char *path = NULL;
+
+  len = strlen(base) + 1;
+
+  if (strcmp(dir, ".")) {
+    len += strlen(dir) + strlen("/");
+  }
+
+  if ((path = mrb_malloc(mrb, len)) != NULL) {
+    memset(path, 0, len);
+
+    if (strcmp(dir, ".")) {
+      strcat(path, dir);
+      strcat(path, "/");
+    }
+    strcat(path, base);
+  }
+  return path;
+}
+
+static char*
+dirname(mrb_state *mrb, const char *path)
+{
+  size_t len;
+  char *p, *dir;
+
+  if (path == NULL) {
+    return NULL;
+  }
+
+  p = strrchr(path, '/');
+  len = p != NULL ? p - path : strlen(path);
+
+  if ((dir = mrb_malloc(mrb, len + 1)) != NULL) {
+    strncpy(dir, path, len);
+  }
+  return dir;
+}
+
+static source_file*
+source_file_new(mrb_state *mrb, mrb_debug_context *dbg, char *filename)
+{
+  source_file *file = NULL;
+
+  if ((file = mrb_malloc(mrb, sizeof(source_file))) == NULL) {
+    return NULL;
+  }
+
+  memset(file, '\0', sizeof(source_file));
+  file->fp = fopen(filename, "rb");
+
+  if (file->fp == NULL) {
+    source_file_free(mrb, file);
+    return NULL;
+  }
+
+  file->lineno = 1;
+  file->path = mrb_malloc(mrb, strlen(filename) + 1);
+  strcpy(file->path, filename);
+  return file;
+}
+
+static mrb_bool
+remove_newlines(char *s, FILE *fp)
+{
+  char c, *p;
+  size_t len;
+
+  if ((len = strlen(s)) == 0) {
+    return FALSE;
+  }
+
+  p = s + len - 1;
+
+  if (*p != '\r' && *p != '\n') {
+    return FALSE;
+  }
+
+  if (*p == '\r') {
+    /* peek the next character and skip '\n' */
+    if ((unsigned char)(c = fgetc(fp)) != '\n') {
+      ungetc(c, fp);
+    }
+  }
+
+  /* remove trailing newline characters */
+  while (s <= p && (*p == '\r' || *p == '\n')) {
+    *p-- = '\0';
+  }
+
+  return TRUE;
+}
+
+static void
+show_lines(source_file *file, uint16_t line_min, uint16_t line_max)
+{
+  char buf[LINE_BUF_SIZE];
+  int show_lineno = 1, found_newline = 0, is_printed = 0;
+
+  if (file->fp == NULL) {
+    return;
+  }
+
+  while (fgets(buf, sizeof(buf), file->fp) != NULL) {
+    found_newline = remove_newlines(buf, file->fp);
+
+    if (line_min <= file->lineno) {
+      if (show_lineno) {
+        printf("%-8d", file->lineno);
+      }
+      show_lineno = found_newline;
+      printf(found_newline ? "%s\n" : "%s", buf);
+      is_printed = 1;
+    }
+
+    if (found_newline) {
+      if (line_max < ++file->lineno) {
+        break;
+      }
+    }
+  }
+
+  if (is_printed && !found_newline) {
+    printf("\n");
+  }
+}
+
+char*
+mrb_debug_get_source(mrb_state *mrb, mrdb_state *mrdb, const char *srcpath, const char *filename)
+{
+  int i;
+  FILE *fp;
+  const char *search_path[3];
+  char *path = NULL;
+
+  search_path[0] = srcpath;
+  search_path[1] = dirname(mrb, mrb_debug_get_filename(mrdb->dbg->root_irep, 0));
+  search_path[2] = ".";
+
+  for (i = 0; i < 3; i++) {
+    if (search_path[i] == NULL) {
+      continue;
+    }
+
+    if ((path = build_path(mrb, search_path[i], filename)) == NULL) {
+      continue;
+    }
+
+    if ((fp = fopen(path, "rb")) == NULL) {
+      mrb_free(mrb, path);
+      path = NULL;
+      continue;
+    }
+    fclose(fp);
+    break;
+  }
+  return path;
+}
+
+int32_t
+mrb_debug_list(mrb_state *mrb, mrb_debug_context *dbg, char *filename, uint16_t line_min, uint16_t line_max)
+{
+  char *ext;
+  source_file *file;
+
+  if (mrb == NULL || dbg == NULL || filename == NULL) {
+    return MRB_DEBUG_INVALID_ARGUMENT;
+  }
+
+  ext = strrchr(filename, '.');
+
+  if (ext == NULL || strcmp(ext, ".rb")) {
+    printf("List command only supports .rb file.\n");
+    return MRB_DEBUG_INVALID_ARGUMENT;
+  }
+
+  if (line_min > line_max) {
+    return MRB_DEBUG_INVALID_ARGUMENT;
+  }
+
+  if ((file = source_file_new(mrb, dbg, filename)) != NULL) {
+    show_lines(file, line_min, line_max);
+    source_file_free(mrb, file);
+    return MRB_DEBUG_OK;
+  }
+  else {
+    printf("Invalid source file named %s.\n", filename);
+    return MRB_DEBUG_INVALID_ARGUMENT;
+  }
+}
@@ -0,0 +1,14 @@
+/*
+ * apilist.h
+ */
+
+#ifndef APILIST_H_
+#define APILIST_H_
+
+#include "mruby.h"
+#include "mrdb.h"
+
+int32_t mrb_debug_list(mrb_state *, mrb_debug_context *, char *, uint16_t, uint16_t);
+char* mrb_debug_get_source(mrb_state *, mrdb_state *, const char *, const char *);
+
+#endif /* APILIST_H_ */
@@ -0,0 +1,78 @@
+/*
+** apiprint.c
+**
+*/
+
+#include <string.h>
+#include "mrdb.h"
+#include "mruby/value.h"
+#include "mruby/class.h"
+#include "mruby/compile.h"
+#include "mruby/error.h"
+#include "mruby/numeric.h"
+#include "mruby/string.h"
+#include "apiprint.h"
+
+static void
+mrdb_check_syntax(mrb_state *mrb, mrb_debug_context *dbg, const char *expr, size_t len)
+{
+  mrbc_context *c;
+
+  c = mrbc_context_new(mrb);
+  c->no_exec = TRUE;
+  c->capture_errors = TRUE;
+  c->filename = (char*)dbg->prvfile;
+  c->lineno = dbg->prvline;
+
+  /* Load program */
+  mrb_load_nstring_cxt(mrb, expr, len, c);
+
+  mrbc_context_free(mrb, c);
+}
+
+mrb_value
+mrb_debug_eval(mrb_state *mrb, mrb_debug_context *dbg, const char *expr, size_t len, mrb_bool *exc)
+{
+  void *tmp;
+  mrb_value ruby_code;
+  mrb_value s;
+  mrb_value v;
+  mrb_value recv;
+
+  /* disable code_fetch_hook */
+  tmp = mrb->code_fetch_hook;
+  mrb->code_fetch_hook = NULL;
+
+  mrdb_check_syntax(mrb, dbg, expr, len);
+  if (mrb->exc) {
+    v = mrb_obj_value(mrb->exc);
+    mrb->exc = 0;
+  }
+  else {
+    /*
+     * begin
+     *   expr
+     * rescue => e
+     *   e
+     * end
+     */
+    ruby_code = mrb_str_new_cstr(mrb, "begin\n");
+    ruby_code = mrb_str_cat(mrb, ruby_code, expr, len);
+    ruby_code = mrb_str_cat_cstr(mrb, ruby_code, "\nrescue => e\ne\nend");
+
+    recv = dbg->regs[0];
+
+    v =  mrb_funcall(mrb, recv, "instance_eval", 1, ruby_code);
+  }
+
+  if (exc) {
+    *exc = mrb_obj_is_kind_of(mrb, v, mrb->eException_class);
+  }
+
+  s = mrb_funcall(mrb, v, "inspect", 0);
+
+  /* enable code_fetch_hook */
+  mrb->code_fetch_hook = tmp;
+
+  return s;
+}
@@ -0,0 +1,13 @@
+/*
+ * apiprint.h
+ */
+
+#ifndef APIPRINT_H_
+#define APIPRINT_H_
+
+#include "mruby.h"
+#include "mrdb.h"
+
+mrb_value mrb_debug_eval(mrb_state*, mrb_debug_context*, const char*, size_t, mrb_bool*);
+
+#endif /* APIPRINT_H_ */
@@ -0,0 +1,426 @@
+/*
+** cmdbreak.c
+**
+*/
+
+#include <ctype.h>
+#include <string.h>
+#include "mruby.h"
+#include "mruby/dump.h"
+#include "mruby/debug.h"
+#include "mruby/string.h"
+#include "mrdb.h"
+#include "mrdberror.h"
+#include "apibreak.h"
+
+#define BREAK_SET_MSG_LINE                  "Breakpoint %d: file %s, line %d.\n"
+#define BREAK_SET_MSG_METHOD                "Breakpoint %d: method %s.\n"
+#define BREAK_SET_MSG_CLASS_METHOD          "Breakpoint %d: class %s, method %s.\n"
+#define BREAK_INFO_MSG_HEADER               "Num     Type           Enb What"
+#define BREAK_INFO_MSG_LINEBREAK            "%-8ubreakpoint     %s   at %s:%u\n"
+#define BREAK_INFO_MSG_METHODBREAK          "%-8ubreakpoint     %s   in %s:%s\n"
+#define BREAK_INFO_MSG_METHODBREAK_NOCLASS  "%-8ubreakpoint     %s   in %s\n"
+#define BREAK_INFO_MSG_ENABLE               "y"
+#define BREAK_INFO_MSG_DISABLE              "n"
+
+#define BREAK_ERR_MSG_INVALIDARG            "Internal error."
+#define BREAK_ERR_MSG_BLANK                 "Try \'help break\' for more information."
+#define BREAK_ERR_MSG_RANGEOVER             "The line number range is from 1 to 65535."
+#define BREAK_ERR_MSG_NUMOVER               "Exceeded the setable number of breakpoint."
+#define BREAK_ERR_MSG_NOOVER                "Breakno is over the available number.Please 'quit' and restart mrdb."
+#define BREAK_ERR_MSG_INVALIDSTR            "String \'%s\' is invalid.\n"
+#define BREAK_ERR_MSG_INVALIDLINENO         "Line %d in file \"%s\" is unavailable.\n"
+#define BREAK_ERR_MSG_INVALIDCLASS          "Class name \'%s\' is invalid.\n"
+#define BREAK_ERR_MSG_INVALIDMETHOD         "Method name \'%s\' is invalid.\n"
+#define BREAK_ERR_MSG_INVALIDFILE           "Source file named \"%s\" is unavailable.\n"
+#define BREAK_ERR_MSG_INVALIDBPNO           "warning: bad breakpoint number at or near '%s'\n"
+#define BREAK_ERR_MSG_INVALIDBPNO_INFO      "Args must be numbers variables."
+#define BREAK_ERR_MSG_NOBPNO                "No breakpoint number %d.\n"
+#define BREAK_ERR_MSG_NOBPNO_INFO           "No breakpoint matching '%d'\n"
+#define BREAK_ERR_MSG_NOBPNO_INFOALL        "No breakpoints."
+
+#define LINENO_MAX_DIGIT 6
+#define BPNO_LETTER_NUM 9
+
+typedef int32_t (*all_command_func)(mrb_state *, mrb_debug_context *);
+typedef int32_t (*select_command_func)(mrb_state *, mrb_debug_context *, uint32_t);
+
+static void
+print_api_common_error(int32_t error)
+{
+  switch(error) {
+    case MRB_DEBUG_INVALID_ARGUMENT:
+      puts(BREAK_ERR_MSG_INVALIDARG);
+      break;
+    default:
+      break;
+  }
+}
+
+#undef STRTOUL
+#define STRTOUL(ul,s) \
+    ul = 0; \
+    for(int i=0; ISDIGIT(s[i]); i++) ul = 10*ul + (s[i] -'0');
+
+static int32_t
+parse_breakpoint_no(char* args)
+{
+  char* ps = args;
+  uint32_t l;
+
+  if((*ps == '0')||(strlen(ps) >= BPNO_LETTER_NUM)) {
+    return 0;
+  }
+
+  while( !(ISBLANK(*ps)||ISCNTRL(*ps)) ) {
+    if(!ISDIGIT(*ps)) {
+      return 0;
+    }
+    ps++;
+  }
+
+  STRTOUL(l, args);
+  return l;
+}
+
+static mrb_bool
+exe_set_command_all(mrb_state *mrb, mrdb_state *mrdb, all_command_func func)
+{
+  int32_t ret = MRB_DEBUG_OK;
+
+  if(mrdb->wcnt == 1) {
+    ret = func(mrb, mrdb->dbg);
+    print_api_common_error(ret);
+    return TRUE;
+  }
+  return FALSE;
+}
+
+static void
+exe_set_command_select(mrb_state *mrb, mrdb_state *mrdb, select_command_func func)
+{
+  char* ps;
+  int32_t ret = MRB_DEBUG_OK;
+  int32_t bpno = 0;
+  int32_t i;
+
+  for(i=1; i<mrdb->wcnt; i++) {
+    ps = mrdb->words[i];
+    bpno = parse_breakpoint_no(ps);
+    if(bpno == 0) {
+      printf(BREAK_ERR_MSG_INVALIDBPNO, ps);
+      break;
+    }
+    ret = func(mrb, mrdb->dbg, (uint32_t)bpno);
+    if(ret == MRB_DEBUG_BREAK_INVALID_NO) {
+      printf(BREAK_ERR_MSG_NOBPNO, bpno);
+    }
+    else if(ret != MRB_DEBUG_OK) {
+      print_api_common_error(ret);
+    }
+  }
+}
+
+mrb_debug_bptype
+check_bptype(char* args)
+{
+  char* ps = args;
+
+  if(ISBLANK(*ps)||ISCNTRL(*ps)) {
+    puts(BREAK_ERR_MSG_BLANK);
+    return MRB_DEBUG_BPTYPE_NONE;
+  }
+
+  if(!ISDIGIT(*ps)) {
+    return MRB_DEBUG_BPTYPE_METHOD;
+  }
+
+  while( !(ISBLANK(*ps)||ISCNTRL(*ps)) ) {
+    if(!ISDIGIT(*ps)) {
+      printf(BREAK_ERR_MSG_INVALIDSTR, args);
+      return MRB_DEBUG_BPTYPE_NONE;
+    }
+    ps++;
+  }
+
+  if((*args == '0')||(strlen(args) >= LINENO_MAX_DIGIT)) {
+    puts(BREAK_ERR_MSG_RANGEOVER);
+    return MRB_DEBUG_BPTYPE_NONE;
+  }
+
+  return MRB_DEBUG_BPTYPE_LINE;
+}
+
+static void
+print_breakpoint(mrb_debug_breakpoint *bp)
+{
+  char* enable_letter[] = {BREAK_INFO_MSG_DISABLE, BREAK_INFO_MSG_ENABLE};
+
+  if(bp->type == MRB_DEBUG_BPTYPE_LINE) {
+    printf(BREAK_INFO_MSG_LINEBREAK,
+      bp->bpno, enable_letter[bp->enable], bp->point.linepoint.file, bp->point.linepoint.lineno);
+  }
+  else {
+    if(bp->point.methodpoint.class_name == NULL) {
+      printf(BREAK_INFO_MSG_METHODBREAK_NOCLASS,
+        bp->bpno, enable_letter[bp->enable], bp->point.methodpoint.method_name);
+    }
+    else {
+      printf(BREAK_INFO_MSG_METHODBREAK,
+        bp->bpno, enable_letter[bp->enable], bp->point.methodpoint.class_name, bp->point.methodpoint.method_name);
+    }
+  }
+}
+
+static void
+info_break_all(mrb_state *mrb, mrdb_state *mrdb)
+{
+  int32_t bpnum = 0;
+  int32_t i = 0;
+  int32_t ret = MRB_DEBUG_OK;
+  mrb_debug_breakpoint *bp_list;
+
+  bpnum = mrb_debug_get_breaknum(mrb, mrdb->dbg);
+  if(bpnum < 0) {
+    print_api_common_error(bpnum);
+    return;
+  }
+  else if(bpnum == 0) {
+    puts(BREAK_ERR_MSG_NOBPNO_INFOALL);
+    return;
+  }
+  bp_list = (mrb_debug_breakpoint*)mrb_malloc(mrb, bpnum * sizeof(mrb_debug_breakpoint));
+
+  ret = mrb_debug_get_break_all(mrb, mrdb->dbg, (uint32_t)bpnum, bp_list);
+  if(ret < 0) {
+    print_api_common_error(ret);
+    return;
+  }
+  puts(BREAK_INFO_MSG_HEADER);
+  for(i = 0 ; i < bpnum ; i++) {
+    print_breakpoint(&bp_list[i]);
+  }
+
+  mrb_free(mrb, bp_list);
+}
+
+static void
+info_break_select(mrb_state *mrb, mrdb_state *mrdb)
+{
+  int32_t ret = MRB_DEBUG_OK;
+  int32_t bpno = 0;
+  char* ps = mrdb->command;
+  mrb_debug_breakpoint bp;
+  mrb_bool isFirst = TRUE;
+  int32_t i;
+
+  for(i=2; i<mrdb->wcnt; i++) {
+    ps = mrdb->words[i];
+    bpno = parse_breakpoint_no(ps);
+    if(bpno == 0) {
+      puts(BREAK_ERR_MSG_INVALIDBPNO_INFO);
+      break;
+    }
+
+    ret = mrb_debug_get_break(mrb, mrdb->dbg, bpno, &bp);
+    if(ret == MRB_DEBUG_BREAK_INVALID_NO) {
+      printf(BREAK_ERR_MSG_NOBPNO_INFO, bpno);
+      break;
+    }
+    else if(ret != MRB_DEBUG_OK) {
+      print_api_common_error(ret);
+      break;
+    }
+    else if(isFirst == TRUE) {
+      isFirst = FALSE;
+      puts(BREAK_INFO_MSG_HEADER);
+    }
+    print_breakpoint(&bp);
+  }
+}
+
+mrb_debug_bptype
+parse_breakcommand(mrdb_state *mrdb, const char **file, uint32_t *line, char **cname, char **method)
+{
+  mrb_debug_context *dbg = mrdb->dbg;
+  char *args;
+  char *body;
+  mrb_debug_bptype type;
+  uint32_t l;
+
+  if(mrdb->wcnt <= 1) {
+    puts(BREAK_ERR_MSG_BLANK);
+    return MRB_DEBUG_BPTYPE_NONE;
+  }
+
+  args = mrdb->words[1];
+  if((body = strchr(args, ':')) == NULL) {
+    body = args;
+    type = check_bptype(body);
+  } else {
+    if(body == args) {
+      printf(BREAK_ERR_MSG_INVALIDSTR, args);
+      return MRB_DEBUG_BPTYPE_NONE;
+    }
+    *body = '\0';
+    type = check_bptype(++body);
+  }
+
+  switch(type) {
+    case MRB_DEBUG_BPTYPE_LINE:
+      STRTOUL(l, body);
+      if( l <= 65535 ) {
+        *line = l;
+        *file = (body == args)? mrb_debug_get_filename(dbg->irep, (uint32_t)(dbg->pc - dbg->irep->iseq)): args;
+      } else {
+        puts(BREAK_ERR_MSG_RANGEOVER);
+        type = MRB_DEBUG_BPTYPE_NONE;
+      }
+      break;
+    case MRB_DEBUG_BPTYPE_METHOD:
+      if(body == args) {
+        /* method only */
+        if( ISUPPER(*body)||ISLOWER(*body)||(*body == '_') ) {
+          *method = body;
+          *cname = NULL;
+        } else {
+          printf(BREAK_ERR_MSG_INVALIDMETHOD, args);
+          type = MRB_DEBUG_BPTYPE_NONE;
+        }
+      } else {
+        if( ISUPPER(*args) ) {
+          switch(*body) {
+            case '@': case '$': case '?': case '.': case ',': case ':':
+            case ';': case '#': case '\\': case '\'': case '\"':
+            printf(BREAK_ERR_MSG_INVALIDMETHOD, body);
+            type = MRB_DEBUG_BPTYPE_NONE;
+            break;
+          default:
+            *method = body;
+            *cname = args;
+            break;
+          }
+        } else {
+          printf(BREAK_ERR_MSG_INVALIDCLASS, args);
+          type = MRB_DEBUG_BPTYPE_NONE;
+        }
+      }
+      break;
+    case MRB_DEBUG_BPTYPE_NONE:
+    default:
+      break;
+  }
+
+  return type;
+}
+
+dbgcmd_state
+dbgcmd_break(mrb_state *mrb, mrdb_state *mrdb)
+{
+  mrb_debug_bptype type;
+  mrb_debug_context *dbg = mrdb->dbg;
+  const char *file = NULL;
+  uint32_t line = 0;
+  char *cname = NULL;
+  char *method = NULL;
+  int32_t ret;
+
+  type = parse_breakcommand(mrdb, &file, &line, &cname, &method);
+  switch (type) {
+    case MRB_DEBUG_BPTYPE_LINE:
+      ret = mrb_debug_set_break_line(mrb, dbg, file, line);
+      break;
+    case MRB_DEBUG_BPTYPE_METHOD:
+      ret = mrb_debug_set_break_method(mrb, dbg, cname, method);
+      break;
+    case MRB_DEBUG_BPTYPE_NONE:
+    default:
+      return DBGST_PROMPT;
+  }
+
+  if (ret >= 0) {
+    if (type == MRB_DEBUG_BPTYPE_LINE) {
+      printf(BREAK_SET_MSG_LINE, ret, file, line);
+    } else if ((type == MRB_DEBUG_BPTYPE_METHOD)&&(cname == NULL)) {
+      printf(BREAK_SET_MSG_METHOD, ret, method);
+    } else {
+      printf(BREAK_SET_MSG_CLASS_METHOD, ret, cname, method);
+    }
+  } else {
+    switch (ret) {
+      case MRB_DEBUG_BREAK_INVALID_LINENO:
+        printf(BREAK_ERR_MSG_INVALIDLINENO, line, file);
+        break;
+      case MRB_DEBUG_BREAK_INVALID_FILE:
+        printf(BREAK_ERR_MSG_INVALIDFILE, file);
+        break;
+      case MRB_DEBUG_BREAK_NUM_OVER:
+        puts(BREAK_ERR_MSG_NUMOVER);
+        break;
+      case MRB_DEBUG_BREAK_NO_OVER:
+        puts(BREAK_ERR_MSG_NOOVER);
+        break;
+      case MRB_DEBUG_INVALID_ARGUMENT:
+        puts(BREAK_ERR_MSG_INVALIDARG);
+        break;
+      case MRB_DEBUG_NOBUF:
+        puts("T.B.D.");
+        break;
+      default:
+        break;
+    }
+  }
+
+  return DBGST_PROMPT;
+}
+
+dbgcmd_state
+dbgcmd_info_break(mrb_state *mrb, mrdb_state *mrdb)
+{
+  if(mrdb->wcnt == 2) {
+    info_break_all(mrb, mrdb);
+  }
+  else {
+    info_break_select(mrb, mrdb);
+  }
+
+  return DBGST_PROMPT;
+}
+
+dbgcmd_state
+dbgcmd_delete(mrb_state *mrb, mrdb_state *mrdb)
+{
+  mrb_bool ret = FALSE;
+
+  ret = exe_set_command_all(mrb, mrdb, mrb_debug_delete_break_all);
+  if(ret != TRUE) {
+    exe_set_command_select(mrb, mrdb, mrb_debug_delete_break);
+  }
+
+  return DBGST_PROMPT;
+}
+
+dbgcmd_state
+dbgcmd_enable(mrb_state *mrb, mrdb_state *mrdb)
+{
+  mrb_bool ret = FALSE;
+
+  ret = exe_set_command_all(mrb, mrdb, mrb_debug_enable_break_all);
+  if(ret != TRUE) {
+    exe_set_command_select(mrb, mrdb, mrb_debug_enable_break);
+  }
+
+  return DBGST_PROMPT;
+}
+
+dbgcmd_state
+dbgcmd_disable(mrb_state *mrb, mrdb_state *mrdb)
+{
+  mrb_bool ret = FALSE;
+
+  ret = exe_set_command_all(mrb, mrdb, mrb_debug_disable_break_all);
+  if(ret != TRUE) {
+    exe_set_command_select(mrb, mrdb, mrb_debug_disable_break);
+  }
+  return DBGST_PROMPT;
+}
@@ -0,0 +1,500 @@
+/*
+** cmdmisc.c - mruby debugger miscellaneous command functions
+**
+*/
+
+#include <ctype.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "apilist.h"
+#include "mruby/compile.h"
+
+typedef struct help_msg {
+  const char *cmd1;
+  const char *cmd2;
+  const char *short_msg;
+  const char *long_msg;
+} help_msg;
+
+static help_msg help_msg_list[] = {
+  {
+    "b[reak]", NULL, "Set breakpoint",
+    "Usage: break [file:]line\n"
+    "       break [class:]method\n"
+    "\n"
+    "Set breakpoint at specified line or method.\n"
+    "If \'[file:]line\' is specified, break at start of code for that line (in a file).\n"
+    "If \'[class:]method\' is specified, break at start of code for that method (of the class).\n"
+  },
+  {
+    "c[ontinue]", NULL, "Continue program being debugged",
+    "Usage: continue [N]\n"
+    "\n"
+    "Continue program stopped by a breakpoint.\n"
+    "If N, which is non negative value, is passed,\n"
+    "proceed program until the N-th breakpoint is comming.\n"
+    "If N is not passed, N is assumed 1.\n"
+  },
+  {
+    "d[elete]", NULL, "Delete some breakpoints",
+    "Usage: delete [bpno1 [bpno2 [... [bpnoN]]]]\n"
+    "\n"
+    "Delete some breakpoints.\n"
+    "Arguments are breakpoint numbers with spaces in between.\n"
+    "To delete all breakpoints, give no argument.\n"
+  },
+  {
+    "dis[able]", NULL, "Disable some breakpoints",
+    "Usage: disable [bpno1 [bpno2 [... [bpnoN]]]]\n"
+    "\n"
+    "Disable some breakpoints.\n"
+    "Arguments are breakpoint numbers with spaces in between.\n"
+    "To disable all breakpoints, give no argument.\n"
+  },
+  {
+    "en[able]", NULL, "Enable some breakpoints",
+    "Usage: enable [bpno1 [bpno2 [... [bpnoN]]]]\n"
+    "\n"
+    "Enable some breakpoints.\n"
+    "Arguments are breakpoint numbers with spaces in between.\n"
+    "To enable all breakpoints, give no argument.\n"
+  },
+  {
+    "ev[al]", NULL, "Evaluate expression",
+    "Usage: eval expr\n"
+    "\n"
+    "It evaluates and prints the value of the mruby expression.\n"
+    "This is equivalent to the \'print\' command.\n"
+  },
+  {
+    "h[elp]", NULL, "Print this help",
+    "Usage: help [command]\n"
+    "\n"
+    "With no arguments, help displays a short list of commands.\n"
+    "With a command name as help argument, help displays how to use that command.\n"
+  },
+  {
+    "i[nfo]", "b[reakpoints]", "Status of breakpoints",
+    "Usage: info breakpoints [bpno1 [bpno2 [... [bpnoN]]]]\n"
+    "\n"
+    "Status of specified breakpoints (all user-settable breakpoints if no argument).\n"
+    "Arguments are breakpoint numbers with spaces in between.\n"
+  },
+  {
+    "l[ist]", NULL, "List specified line",
+    "Usage: list\n"
+    "       list first[,last]\n"
+    "       list filename:first[,last]\n"
+    "\n"
+    "Print lines from a source file.\n"
+    "\n"
+    "With first and last, list prints lines from first to last.\n"
+    "When last is empty, it stands for ten lines away from first.\n"
+    "With filename, list prints lines in the specified source file.\n"
+  },
+  {
+    "p[rint]", NULL, "Print value of expression",
+    "Usage: print expr\n"
+    "\n"
+    "It evaluates and prints the value of the mruby expression.\n"
+    "This is equivalent to the \'eval\' command.\n"
+  },
+  {
+    "q[uit]", NULL, "Exit mrdb",
+    "Usage: quit\n"
+    "\n"
+    "Exit mrdb.\n"
+  },
+  {
+    "r[un]", NULL, "Start debugged program",
+    "Usage: run\n"
+    "\n"
+    "Start debugged program.\n"
+  },
+  {
+    "s[tep]", NULL, "Step program until it reaches a different source line",
+    "Usage: step\n"
+    "\n"
+    "Step program until it reaches a different source line.\n"
+  },
+  { NULL, NULL, NULL, NULL }
+};
+
+typedef struct listcmd_parser_state {
+  mrb_bool parse_error;
+  mrb_bool has_line_min;
+  mrb_bool has_line_max;
+  char *filename;
+  uint16_t line_min;
+  uint16_t line_max;
+} listcmd_parser_state;
+
+static listcmd_parser_state*
+listcmd_parser_state_new(mrb_state *mrb)
+{
+  listcmd_parser_state *st = mrb_malloc(mrb, sizeof(listcmd_parser_state));
+  memset(st, 0, sizeof(listcmd_parser_state));
+  return st;
+}
+
+static void
+listcmd_parser_state_free(mrb_state *mrb, listcmd_parser_state *st)
+{
+  if (st != NULL) {
+    if (st->filename != NULL) {
+      mrb_free(mrb, st->filename);
+    }
+    mrb_free(mrb, st);
+  }
+}
+
+static mrb_bool
+parse_uint(char **sp, uint16_t *n)
+{
+  char *p;
+  int i;
+
+  if (*sp == NULL || **sp == '\0') {
+    return FALSE;
+  }
+
+  for (p = *sp; *p != '\0' && ISDIGIT(*p); p++) ;
+
+  if (p != *sp && (i = atoi(*sp)) >= 0) {
+    *n = (uint16_t)i;
+    *sp = p;
+    return TRUE;
+  }
+  return FALSE;
+}
+
+static mrb_bool
+skip_char(char **sp, char c)
+{
+  if (*sp != NULL && **sp == c) {
+    ++*sp;
+    return TRUE;
+  }
+  return FALSE;
+}
+
+static mrb_bool
+parse_lineno(mrb_state *mrb, char **sp, listcmd_parser_state *st)
+{
+  if (*sp == NULL || **sp == '\0') {
+    return FALSE;
+  }
+
+  st->has_line_min = FALSE;
+  st->has_line_max = FALSE;
+
+  if (parse_uint(sp, &st->line_min)) {
+    st->has_line_min = TRUE;
+  }
+  else {
+    return FALSE;
+  }
+
+  if (skip_char(sp, ',')) {
+    if (parse_uint(sp, &st->line_max)) {
+      st->has_line_max = TRUE;
+    }
+    else {
+      st->parse_error = TRUE;
+      return FALSE;
+    }
+  }
+  return TRUE;
+}
+
+static mrb_bool
+parse_filename(mrb_state *mrb, char **sp, listcmd_parser_state *st)
+{
+  char *p;
+  int len;
+
+  if (st->filename != NULL) {
+    mrb_free(mrb, st->filename);
+    st->filename = NULL;
+  }
+
+  if ((p = strchr(*sp, ':')) != NULL) {
+    len = p - *sp;
+  }
+  else {
+    len = strlen(*sp);
+  }
+
+  if (len > 0) {
+    st->filename = mrb_malloc(mrb, len + 1);
+    strncpy(st->filename, *sp, len);
+    st->filename[len] = '\0';
+    *sp += len;
+    return TRUE;
+  }
+  else {
+    return FALSE;
+  }
+}
+
+char*
+replace_ext(mrb_state *mrb, const char *filename, const char *ext)
+{
+  size_t len;
+  char *p, *s;
+
+  if (filename == NULL) {
+    return NULL;
+  }
+
+  if ((p = strrchr(filename, '.')) != NULL && strchr(p, '/') == NULL) {
+    len = p - filename;
+  }
+  else {
+    len = strlen(filename);
+  }
+
+  if ((s = mrb_malloc(mrb, len + strlen(ext) + 1)) != NULL) {
+    memset(s, '\0', len + strlen(ext) + 1);
+    strncpy(s, filename, len);
+    strcat(s, ext);
+  }
+  return s;
+}
+
+static mrb_bool
+parse_listcmd_args(mrb_state *mrb, mrdb_state *mrdb, listcmd_parser_state *st)
+{
+  char *p;
+
+  switch (mrdb->wcnt) {
+  case 2:
+    p = mrdb->words[1];
+
+    /* mrdb->words[1] ::= <lineno> | <filename> ':' <lineno> | <filename> */
+    if (!parse_lineno(mrb, &p, st)) {
+      if (parse_filename(mrb, &p, st)) {
+        if (skip_char(&p, ':')) {
+          if (!parse_lineno(mrb, &p, st)) {
+            st->parse_error = TRUE;
+          }
+        }
+      }
+      else {
+        st->parse_error = TRUE;
+      }
+    }
+    if (*p != '\0') {
+      st->parse_error = TRUE;
+    }
+    break;
+  case 1:
+  case 0:
+    /* do nothing */
+    break;
+  default:
+    st->parse_error = TRUE;
+    printf("too many arguments\n");
+    break;
+  }
+
+  if (!st->parse_error) {
+    if (!st->has_line_min) {
+      st->line_min = (!st->filename && mrdb->dbg->prvline > 0) ? mrdb->dbg->prvline : 1;
+    }
+
+    if (!st->has_line_max) {
+      st->line_max = st->line_min + 9;
+    }
+
+    if (st->filename == NULL) {
+      if (mrdb->dbg->prvfile && strcmp(mrdb->dbg->prvfile, "-")) {
+        st->filename = replace_ext(mrb, mrdb->dbg->prvfile, ".rb");
+      }
+    }
+  }
+
+  if (st->parse_error || st->filename == NULL) {
+    return FALSE;
+  }
+
+  return TRUE;
+}
+
+static mrb_bool
+check_cmd_pattern(const char *pattern, const char *cmd)
+{
+  char *lbracket, *rbracket, *p, *q;
+
+  if (pattern == NULL && cmd == NULL) {
+    return TRUE;
+  }
+  if (pattern == NULL || cmd == NULL) {
+    return FALSE;
+  }
+  if((lbracket = strchr(pattern, '[')) == NULL) {
+    return !strcmp(pattern, cmd);
+  }
+  if ((rbracket = strchr(pattern, ']')) == NULL) {
+    return FALSE;
+  }
+  if (strncmp(pattern, cmd, lbracket - pattern)) {
+    return FALSE;
+  }
+
+  p = lbracket + 1;
+  q = (char *)cmd + (lbracket - pattern);
+
+  for ( ; p < rbracket && *q != '\0'; p++, q++) {
+    if (*p != *q) {
+      break;
+    }
+  }
+  return *q == '\0';
+}
+
+static help_msg*
+get_help_msg(char *cmd1, char *cmd2)
+{
+  help_msg *p;
+
+  if (cmd1 == NULL) {
+    return NULL;
+  }
+  for (p = help_msg_list; p->cmd1 != NULL; p++) {
+    if (check_cmd_pattern(p->cmd1, cmd1) && check_cmd_pattern(p->cmd2, cmd2)) {
+      return p;
+    }
+  }
+  return NULL;
+}
+
+static mrb_bool
+show_short_help(void)
+{
+  help_msg *p;
+
+  printf("Commands\n");
+
+  for (p = help_msg_list; p->cmd1 != NULL; p++) {
+    if (p->cmd2 == NULL) {
+      printf("  %s -- %s\n", p->cmd1, p->short_msg);
+    }
+    else {
+      printf("  %s %s -- %s\n", p->cmd1, p->cmd2, p->short_msg);
+    }
+  }
+  return TRUE;
+}
+
+static mrb_bool
+show_long_help(char *cmd1, char *cmd2)
+{
+  help_msg *help;
+
+  if ((help = get_help_msg(cmd1, cmd2)) == NULL) {
+    return FALSE;
+  }
+  printf("%s", help->long_msg);
+  return TRUE;
+}
+
+dbgcmd_state
+dbgcmd_list(mrb_state *mrb, mrdb_state *mrdb)
+{
+  char *filename;
+  listcmd_parser_state *st = listcmd_parser_state_new(mrb);
+
+  if (parse_listcmd_args(mrb, mrdb, st)) {
+    if ((filename = mrb_debug_get_source(mrb, mrdb, mrdb->srcpath, st->filename)) == NULL) {
+      filename = st->filename;
+    }
+    mrb_debug_list(mrb, mrdb->dbg, filename, st->line_min, st->line_max);
+    listcmd_parser_state_free(mrb, st);
+
+    if (filename != NULL && filename != st->filename) {
+      mrb_free(mrb, filename);
+    }
+  }
+
+  return DBGST_PROMPT;
+}
+
+dbgcmd_state
+dbgcmd_help(mrb_state *mrb, mrdb_state *mrdb)
+{
+  mrb_bool is_valid;
+  int i;
+
+  switch (mrdb->wcnt) {
+  case 0:
+  case 1:
+    is_valid = show_short_help();
+    break;
+  case 2:
+    is_valid = show_long_help(mrdb->words[1], NULL);
+    break;
+  case 3:
+    is_valid = show_long_help(mrdb->words[1], mrdb->words[2]);
+    break;
+  default:
+    is_valid = FALSE;
+    break;
+  }
+
+  if (!is_valid) {
+    printf("Invalid command \"");
+    for (i = 1; i < mrdb->wcnt; i++) {
+      printf("%s%s", i == 1 ? "" : " ", mrdb->words[i]);
+    }
+    printf("\". Try \"help\".\n");
+  }
+
+  return DBGST_PROMPT;
+}
+
+dbgcmd_state
+dbgcmd_quit(mrb_state *mrb, mrdb_state *mrdb)
+{
+  switch (mrdb->dbg->xm) {
+  case DBG_RUN:
+  case DBG_STEP:
+  case DBG_NEXT:
+    while (1) {
+      char c;
+      int buf;
+
+      printf("The program is running.  Exit anyway? (y or n) ");
+
+      if ((buf = getchar()) == EOF) {
+        mrdb->dbg->xm = DBG_QUIT;
+        break;
+      }
+      c = buf;
+      while (buf != '\n' && (buf = getchar()) != EOF) ;
+
+      if (c == 'y' || c == 'Y') {
+        mrdb->dbg->xm = DBG_QUIT;
+        break;
+      }
+      else if (c == 'n' || c == 'N') {
+        break;
+      }
+      else {
+        printf("Please answer y or n.\n");
+      }
+    }
+    break;
+  default:
+    mrdb->dbg->xm = DBG_QUIT;
+    break;
+  }
+
+  if (mrdb->dbg->xm == DBG_QUIT) {
+    struct RClass *exc;
+    exc = mrb_define_class(mrb, "DebuggerExit", mrb_class_get(mrb, "Exception"));
+    mrb_raise(mrb, exc, "Exit mrdb.");
+  }
+  return DBGST_PROMPT;
+}
@@ -0,0 +1,58 @@
+/*
+** cmdprint.c - mruby debugger print command functions
+**
+*/
+
+#include <string.h>
+#include "mrdb.h"
+#include "mruby/value.h"
+#include "mruby/class.h"
+#include "mruby/compile.h"
+#include "mruby/error.h"
+#include "mruby/numeric.h"
+#include "mruby/string.h"
+#include "apiprint.h"
+
+dbgcmd_state
+dbgcmd_print(mrb_state *mrb, mrdb_state *mrdb)
+{
+  mrb_value expr;
+  mrb_value result;
+  mrb_value s;
+  uint8_t wcnt;
+  int ai;
+
+  if (mrdb->wcnt <= 1) {
+    puts("Parameter not specified.");
+    return DBGST_PROMPT;
+  }
+
+  ai = mrb_gc_arena_save(mrb);
+
+  /* eval expr */
+  expr = mrb_str_new_cstr(mrb, NULL);
+  for (wcnt=1; wcnt<mrdb->wcnt; wcnt++) {
+    expr = mrb_str_cat_cstr(mrb, expr, " ");
+    expr = mrb_str_cat_cstr(mrb, expr, mrdb->words[wcnt]);
+  }
+
+  result = mrb_debug_eval(mrb, mrdb->dbg, RSTRING_PTR(expr), RSTRING_LEN(expr), NULL);
+
+  /* $print_no = result */
+  s = mrb_str_cat_cstr(mrb, result, "\0");
+  printf("$%lu = %s\n", (unsigned long)mrdb->print_no++, RSTRING_PTR(s));
+
+  if (mrdb->print_no == 0) {
+    mrdb->print_no = 1;
+  }
+
+  mrb_gc_arena_restore(mrb, ai);
+
+  return DBGST_PROMPT;
+}
+
+dbgcmd_state
+dbgcmd_eval(mrb_state *mrb, mrdb_state *mrdb)
+{
+  return dbgcmd_print(mrb, mrdb);
+}
@@ -0,0 +1,54 @@
+/*
+** cmdrun.c - mruby debugger run command functions
+**
+*/
+
+#include "mruby/opcode.h"
+#include "mrdb.h"
+
+dbgcmd_state
+dbgcmd_run(mrb_state *mrb, mrdb_state *mrdb)
+{
+  mrb_debug_context *dbg = mrdb->dbg;
+
+  if( dbg->xm == DBG_INIT ){
+    dbg->xm = DBG_RUN;
+  } else {
+    dbg->xm = DBG_QUIT;
+    if( dbg->xphase == DBG_PHASE_RUNNING ){
+      struct RClass *exc;
+      puts("Start it from the beginning.");
+      exc = mrb_define_class(mrb, "DebuggerRestart", mrb_class_get(mrb, "Exception"));
+      mrb_raise(mrb, exc, "Restart mrdb.");
+    }
+  }
+  
+  return DBGST_RESTART;
+}
+
+dbgcmd_state
+dbgcmd_continue(mrb_state *mrb, mrdb_state *mrdb)
+{
+  mrb_debug_context *dbg = mrdb->dbg;
+  int ccnt = 1;
+
+  if( mrdb->wcnt > 1 ){
+    sscanf(mrdb->words[1], "%d", &ccnt);
+  }
+  dbg->ccnt = (uint16_t)(ccnt > 0 ? ccnt : 1);  /* count of continue */
+
+  if( dbg->xphase == DBG_PHASE_AFTER_RUN ){
+    puts("The program is not running.");
+    dbg->xm = DBG_QUIT;
+  } else {
+    dbg->xm = DBG_RUN;
+  }
+  return DBGST_CONTINUE;
+}
+
+dbgcmd_state
+dbgcmd_step(mrb_state *mrb, mrdb_state *mrdb)
+{
+  mrdb->dbg->xm = DBG_STEP;
+  return DBGST_CONTINUE;
+}
@@ -0,0 +1,746 @@
+/*
+** mrdb.c - mruby debugger
+**
+*/
+
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+#include <ctype.h>
+
+#include "mruby.h"
+#include "mruby/dump.h"
+#include "mruby/debug.h"
+#include "mruby/class.h"
+#include "mruby/opcode.h"
+#include "mruby/variable.h"
+
+#include "mrdb.h"
+#include "apibreak.h"
+#include "apilist.h"
+
+void mrb_show_version(mrb_state *);
+void mrb_show_copyright(mrb_state *);
+void mrdb_state_free(mrb_state *);
+
+static mrb_debug_context *_debug_context = NULL;
+static mrdb_state *_mrdb_state = NULL;
+
+struct _args {
+  FILE *rfp;
+  char* fname;
+  char* srcpath;
+  int argc;
+  char** argv;
+  mrb_bool mrbfile : 1;
+};
+
+typedef struct debug_command {
+  const char *cmd1;
+  const char *cmd2;
+  uint8_t len1;
+  uint8_t len2;
+  uint8_t div;
+  debug_command_id id;
+  debug_command_func func;
+} debug_command;
+
+static const debug_command debug_command_list[] = {
+  {"break",     NULL,           1, 0, 0, DBGCMD_BREAK,          dbgcmd_break},           /* b[reak] */
+  {"continue",  NULL,           1, 0, 0, DBGCMD_CONTINUE,       dbgcmd_continue},        /* c[ontinue] */
+  {"delete",    NULL,           1, 0, 1, DBGCMD_DELETE,         dbgcmd_delete},          /* d[elete] */
+  {"disable",   NULL,           3, 0, 1, DBGCMD_DISABLE,        dbgcmd_disable},         /* dis[able] */
+  {"enable",    NULL,           2, 0, 1, DBGCMD_ENABLE,         dbgcmd_enable},          /* en[able] */
+  {"eval",      NULL,           2, 0, 0, DBGCMD_EVAL,           dbgcmd_eval},            /* ev[al] */
+  {"help",      NULL,           1, 0, 1, DBGCMD_HELP,           dbgcmd_help},            /* h[elp] */
+  {"info",      "breakpoints",  1, 1, 1, DBGCMD_INFO_BREAK,     dbgcmd_info_break},      /* i[nfo] b[reakpoints] */
+  {"list",      NULL,           1, 0, 1, DBGCMD_LIST,           dbgcmd_list},            /* l[ist] */
+  {"print",     NULL,           1, 0, 0, DBGCMD_PRINT,          dbgcmd_print},           /* p[rint] */
+  {"quit",      NULL,           1, 0, 0, DBGCMD_QUIT,           dbgcmd_quit},            /* q[uit] */
+  {"run",       NULL,           1, 0, 0, DBGCMD_RUN,            dbgcmd_run},             /* r[un] */
+  {"step",      NULL,           1, 0, 1, DBGCMD_STEP,           dbgcmd_step},            /* s[tep] */
+  {NULL}
+};
+
+
+static void
+usage(const char *name)
+{
+  static const char *const usage_msg[] = {
+  "switches:",
+  "-b           load and execute RiteBinary (mrb) file",
+  "-d           specify source directory",
+  "--version    print the version",
+  "--copyright  print the copyright",
+  NULL
+  };
+  const char *const *p = usage_msg;
+
+  printf("Usage: %s [switches] programfile\n", name);
+  while (*p) {
+    printf("  %s\n", *p++);
+  }
+}
+
+static int
+parse_args(mrb_state *mrb, int argc, char **argv, struct _args *args)
+{
+  char **origargv = argv;
+  static const struct _args args_zero = { 0 };
+
+  *args = args_zero;
+
+  for (argc--,argv++; argc > 0; argc--,argv++) {
+    char *item;
+    if (argv[0][0] != '-') break;
+
+    item = argv[0] + 1;
+    switch (*item++) {
+    case 'b':
+      args->mrbfile = TRUE;
+      break;
+    case 'd':
+      if (item[0]) {
+        goto append_srcpath;
+      }
+      else if (argc > 1) {
+        argc--; argv++;
+        item = argv[0];
+append_srcpath:
+        if (!args->srcpath) {
+          size_t buflen;
+          char *buf;
+
+          buflen = strlen(item) + 1;
+          buf = (char *)mrb_malloc(mrb, buflen);
+          memcpy(buf, item, buflen);
+          args->srcpath = buf;
+        }
+        else {
+          size_t srcpathlen;
+          size_t itemlen;
+
+          srcpathlen = strlen(args->srcpath);
+          itemlen = strlen(item);
+          args->srcpath =
+            (char *)mrb_realloc(mrb, args->srcpath, srcpathlen + itemlen + 2);
+          args->srcpath[srcpathlen] = '\n';
+          memcpy(args->srcpath + srcpathlen + 1, item, itemlen + 1);
+        }
+      }
+      else {
+        printf("%s: No path specified for -d\n", *origargv);
+        return EXIT_SUCCESS;
+      }
+      break;
+    case '-':
+      if (strcmp((*argv) + 2, "version") == 0) {
+        mrb_show_version(mrb);
+        exit(EXIT_SUCCESS);
+      }
+      else if (strcmp((*argv) + 2, "copyright") == 0) {
+        mrb_show_copyright(mrb);
+        exit(EXIT_SUCCESS);
+      }
+    default:
+      return EXIT_FAILURE;
+    }
+  }
+
+  if (args->rfp == NULL) {
+    if (*argv == NULL) {
+      printf("%s: Program file not specified.\n", *origargv);
+      return EXIT_FAILURE;
+    }
+    else {
+      args->rfp = fopen(argv[0], args->mrbfile ? "rb" : "r");
+      if (args->rfp == NULL) {
+        printf("%s: Cannot open program file. (%s)\n", *origargv, *argv);
+        return EXIT_FAILURE;
+      }
+      args->fname = argv[0];
+      argc--; argv++;
+    }
+  }
+  args->argv = (char **)mrb_realloc(mrb, args->argv, sizeof(char*) * (argc + 1));
+  memcpy(args->argv, argv, (argc+1) * sizeof(char*));
+  args->argc = argc;
+
+  return EXIT_SUCCESS;
+}
+
+static void
+cleanup(mrb_state *mrb, struct _args *args)
+{
+  if (args->rfp)
+    fclose(args->rfp);
+  if (args->srcpath)
+    mrb_free(mrb, args->srcpath);
+  if (args->argv)
+    mrb_free(mrb, args->argv);
+  mrdb_state_free(mrb);
+  mrb_close(mrb);
+}
+
+static mrb_debug_context*
+mrb_debug_context_new(mrb_state *mrb)
+{
+  mrb_debug_context *dbg = mrb_malloc(mrb, sizeof(mrb_debug_context));
+
+  memset(dbg, 0, sizeof(mrb_debug_context));
+
+  dbg->xm = DBG_INIT;
+  dbg->xphase = DBG_PHASE_BEFORE_RUN;
+  dbg->next_bpno = 1;
+
+  return dbg;
+}
+
+mrb_debug_context*
+mrb_debug_context_get(mrb_state *mrb)
+{
+  if (!_debug_context) {
+    _debug_context = mrb_debug_context_new(mrb);
+  }
+  return _debug_context;
+}
+
+void
+mrb_debug_context_set(mrb_debug_context *dbg)
+{
+  _debug_context = dbg;
+}
+
+void
+mrb_debug_context_free(mrb_state *mrb)
+{
+  if (_debug_context) {
+    mrb_free(mrb, _debug_context);
+    _debug_context = NULL;
+  }
+}
+
+static mrdb_state*
+mrdb_state_new(mrb_state *mrb)
+{
+  mrdb_state *mrdb = mrb_malloc(mrb, sizeof(mrb_state));
+
+  memset(mrdb, 0, sizeof(mrb_state));
+
+  mrdb->dbg = mrb_debug_context_get(mrb);
+  mrdb->command = mrb_malloc(mrb, MAX_COMMAND_LINE+1);
+  mrdb->print_no = 1;
+
+  return mrdb;
+}
+
+mrdb_state*
+mrdb_state_get(mrb_state *mrb)
+{
+  if (!_mrdb_state) {
+    _mrdb_state = mrdb_state_new(mrb);
+  }
+  return _mrdb_state;
+}
+
+void
+mrdb_state_set(mrdb_state *mrdb)
+{
+  _mrdb_state = mrdb;
+}
+
+void
+mrdb_state_free(mrb_state *mrb)
+{
+  mrb_debug_context_free(mrb);
+  if (_mrdb_state) {
+    mrb_free(mrb, _mrdb_state->command);
+    mrb_free(mrb, _mrdb_state);
+    _mrdb_state = NULL;
+  }
+}
+
+static char*
+get_command(mrb_state *mrb, mrdb_state *mrdb)
+{
+  int i;
+  int c;
+
+  for (i=0; i<MAX_COMMAND_LINE; i++) {
+    if ((c=getchar()) == EOF || c == '\n') break;
+    mrdb->command[i] = c;
+  }
+
+  if (i == 0 && feof(stdin)) {
+    clearerr(stdin);
+    strcpy(mrdb->command, "quit");
+    i += strlen("quit");
+  }
+
+  if (i == MAX_COMMAND_LINE) {
+    for ( ; (c=getchar()) != EOF && c !='\n'; i++) ;
+  }
+
+  if (i > MAX_COMMAND_LINE) {
+    printf("command line too long.\n");
+    i = 0; /* discard command data */
+  }
+  mrdb->command[i] = '\0';
+
+  return mrdb->command;
+}
+
+static char*
+pick_out_word(mrb_state *mrb, char **pp)
+{
+  char *ps;
+
+  for (ps=*pp; ISBLANK(*ps); ps++) ;
+  if (*ps == '\0') {
+    return NULL;
+  }
+
+  if (*ps == '\"' || *ps == '\'') {
+    *pp = strchr(ps+1, *ps);
+    if (*pp) (*pp)++;
+  }
+  else {
+    *pp = strpbrk(ps, " \t");
+  }
+
+  if (!*pp) {
+    *pp = ps + strlen(ps);
+  }
+
+  if (**pp != '\0') {
+    **pp = '\0';
+    (*pp)++;
+  }
+
+  return ps;
+}
+
+static debug_command*
+parse_command(mrb_state *mrb, mrdb_state *mrdb, char *buf)
+{
+  debug_command *cmd = NULL;
+  char *p = buf;
+  size_t wlen;
+
+  /* get word #1 */
+  mrdb->words[0] = pick_out_word(mrb, &p);
+  if (!mrdb->words[0]) {
+    return NULL;
+  }
+  mrdb->wcnt = 1;
+  /* set remain parameter */
+  for ( ; *p && ISBLANK(*p); p++) ;
+  if (*p) {
+    mrdb->words[mrdb->wcnt++] = p;
+  }
+
+  /* check word #1 */
+  for (cmd=(debug_command*)debug_command_list; cmd->cmd1; cmd++) {
+    wlen = strlen(mrdb->words[0]);
+    if (wlen >= cmd->len1 &&
+        strncmp(mrdb->words[0], cmd->cmd1, wlen) == 0) {
+      break;
+    }
+  }
+
+  if (cmd->cmd2) {
+    if (mrdb->wcnt > 1) {
+      /* get word #2 */
+      mrdb->words[1] = pick_out_word(mrb, &p);
+      if (mrdb->words[1]) {
+        /* update remain parameter */
+        for ( ; *p && ISBLANK(*p); p++) ;
+        if (*p) {
+          mrdb->words[mrdb->wcnt++] = p;
+        }
+      }
+    }
+
+    /* check word #1,#2 */
+    for ( ; cmd->cmd1; cmd++) {
+      wlen = strlen(mrdb->words[0]);
+      if (wlen < cmd->len1 ||
+          strncmp(mrdb->words[0], cmd->cmd1, wlen)) {
+        continue;
+      }
+
+      if (!cmd->cmd2) break;          /* word #1 only */
+
+      if (mrdb->wcnt == 1) continue;  /* word #2 not specified */
+
+      wlen = strlen(mrdb->words[1]);
+      if (wlen >= cmd->len2 &&
+          strncmp(mrdb->words[1], cmd->cmd2, wlen) == 0) {
+        break;  /* word #1 and #2 */
+      }
+    }
+  }
+
+  /* divide remain parameters */
+  if (cmd->cmd1 && cmd->div) {
+    p = mrdb->words[--mrdb->wcnt];
+    for ( ; mrdb->wcnt<MAX_COMMAND_WORD; mrdb->wcnt++) {
+      mrdb->words[mrdb->wcnt] = pick_out_word(mrb, &p);
+      if (!mrdb->words[mrdb->wcnt]) {
+        break;
+      }
+    }
+  }
+
+  return cmd->cmd1 ? cmd : NULL;
+}
+
+static void
+print_info_stopped_break(mrb_state *mrb, mrdb_state *mrdb)
+{
+  mrb_debug_breakpoint bp;
+  int32_t ret;
+  uint16_t lineno;
+  const char *file;
+  const char *method_name;
+  const char *class_name;
+
+  ret = mrb_debug_get_break(mrb, mrdb->dbg, mrdb->dbg->stopped_bpno, &bp);
+  if(ret == 0) {
+    switch(bp.type) {
+      case MRB_DEBUG_BPTYPE_LINE:
+        file = bp.point.linepoint.file;
+        lineno = bp.point.linepoint.lineno;
+        printf("Breakpoint %d, at %s:%d\n", bp.bpno, file, lineno);
+        break;
+      case MRB_DEBUG_BPTYPE_METHOD:
+        method_name = bp.point.methodpoint.method_name;
+        class_name = bp.point.methodpoint.class_name;
+        if(class_name == NULL) {
+          printf("Breakpoint %d, %s\n", bp.bpno, method_name);
+        }
+        else {
+          printf("Breakpoint %d, %s:%s\n", bp.bpno, class_name, method_name);
+        }
+        if(mrdb->dbg->isCfunc) {
+          printf("Stopped before calling the C function.\n");
+        }
+        break;
+      default:
+        break;
+    }
+  }
+}
+
+static void
+print_info_stopped_step_next(mrb_state *mrb, mrdb_state *mrdb)
+{
+  const char* file = mrdb->dbg->prvfile;
+  uint16_t lineno = mrdb->dbg->prvline;
+  printf("%s:%d\n", file, lineno);
+}
+
+static void
+print_info_stopped_code(mrb_state *mrb, mrdb_state *mrdb)
+{
+  char* file = mrb_debug_get_source(mrb, mrdb, mrdb->srcpath, mrdb->dbg->prvfile);
+  uint16_t lineno = mrdb->dbg->prvline;
+  if(file != NULL) {
+    mrb_debug_list(mrb, mrdb->dbg, file, lineno, lineno);
+    mrb_free(mrb, file);
+  }
+}
+
+static void
+print_info_stopped(mrb_state *mrb, mrdb_state *mrdb)
+{
+  switch(mrdb->dbg->bm) {
+    case BRK_BREAK:
+      print_info_stopped_break(mrb, mrdb);
+      print_info_stopped_code(mrb, mrdb);
+      break;
+    case BRK_STEP:
+    case BRK_NEXT:
+      print_info_stopped_step_next(mrb, mrdb);
+      print_info_stopped_code(mrb, mrdb);
+      break;
+    default:
+      break;
+  }
+}
+
+static debug_command*
+get_and_parse_command(mrb_state *mrb, mrdb_state *mrdb)
+{
+  debug_command *cmd = NULL;
+  char *p;
+  int i;
+
+  while (!cmd) {
+    for (p=NULL; !p || *p=='\0'; ) {
+      printf("(%s:%d) ", mrdb->dbg->prvfile, mrdb->dbg->prvline);
+      p = get_command(mrb, mrdb);
+    }
+
+    cmd = parse_command(mrb, mrdb, p);
+#ifdef _DBG_MRDB_PARSER_
+    for (i=0; i<mrdb->wcnt; i++) {
+      printf("%d: %s\n", i, mrdb->words[i]);
+    }
+#endif
+    if (!cmd) {
+      printf("invalid command (");
+      for (i=0; i<mrdb->wcnt; i++) {
+        if (i>0) {
+          printf(" ");
+        }
+        printf("%s", mrdb->words[i]);
+      }
+      puts(")");
+    }
+  }
+  return cmd;
+}
+
+static const int32_t
+check_method_breakpoint(mrb_state *mrb, mrb_irep *irep, mrb_code *pc, mrb_value *regs)
+{
+  struct RClass* c;
+  mrb_sym sym;
+  int32_t bpno;
+  mrb_bool isCfunc;
+
+  mrb_debug_context *dbg = mrb_debug_context_get(mrb);
+
+  isCfunc = FALSE;
+  bpno = dbg->method_bpno;
+  dbg->method_bpno = 0;
+
+  switch(GET_OPCODE(*pc)) {
+    case OP_SEND:
+    case OP_SENDB:
+      c = mrb_class(mrb, regs[GETARG_A(*pc)]);
+      sym = irep->syms[GETARG_B(*pc)];
+      break;
+    case OP_SUPER:
+      c = mrb->c->ci->target_class->super;
+      sym = mrb->c->ci->mid;
+      break;
+    default:
+      sym = 0;
+      break;
+  }
+  if(sym != 0) {
+    dbg->method_bpno = mrb_debug_check_breakpoint_method(mrb, dbg, c, sym, &isCfunc);
+    if(isCfunc) {
+      bpno = dbg->method_bpno;
+      dbg->method_bpno = 0;
+    }
+  }
+  dbg->isCfunc = isCfunc;
+  return bpno;
+}
+
+static void
+mrb_code_fetch_hook(mrb_state *mrb, mrb_irep *irep, mrb_code *pc, mrb_value *regs)
+{
+  const char *file;
+  int32_t line;
+  int32_t bpno;
+
+  mrb_debug_context *dbg = mrb_debug_context_get(mrb);
+
+  mrb_assert(dbg);
+
+  dbg->irep = irep;
+  dbg->pc   = pc;
+  dbg->regs = regs;
+
+  if(dbg->xphase == DBG_PHASE_RESTART) {
+    dbg->root_irep = irep;
+    dbg->prvfile = NULL;
+    dbg->prvline = 0;
+    dbg->xm = DBG_RUN;
+    dbg->xphase = DBG_PHASE_RUNNING;
+  }
+
+  file = mrb_debug_get_filename(irep, (uint32_t)(pc - irep->iseq));
+  line = mrb_debug_get_line(irep, (uint32_t)(pc - irep->iseq));
+
+  switch (dbg->xm) {
+  case DBG_STEP:
+  case DBG_NEXT:  // temporary
+    if (dbg->prvfile == file && dbg->prvline == line) {
+      return;
+    }
+    dbg->method_bpno = 0;
+    dbg->bm = BRK_STEP;
+    break;
+
+  case DBG_RUN:
+    bpno = check_method_breakpoint(mrb, irep, pc, regs);
+    if (bpno > 0) {
+      dbg->stopped_bpno = bpno;
+      dbg->bm = BRK_BREAK;
+      break;
+    }
+    if (dbg->prvfile != file || dbg->prvline != line) {
+      bpno = mrb_debug_check_breakpoint_line(mrb, dbg, file, line);
+      if (bpno > 0) {
+        dbg->stopped_bpno = bpno;
+        dbg->bm = BRK_BREAK;
+        break;
+      }
+    }
+    dbg->prvfile = file;
+    dbg->prvline = line;
+    return;
+  case DBG_INIT:
+    dbg->root_irep = irep;
+    dbg->bm = BRK_INIT;
+    if (!file || line < 0) {
+      puts("Cannot get debugging information.");
+    }
+    break;
+
+  default:
+    return;
+  }
+
+  dbg->prvfile = file;
+  dbg->prvline = line;
+
+  if(dbg->bm == BRK_BREAK && --dbg->ccnt > 0) {
+    return;
+  }
+  dbg->break_hook(mrb, dbg);
+
+  dbg->xphase = DBG_PHASE_RUNNING;
+}
+
+static mrdb_exemode
+mrb_debug_break_hook(mrb_state *mrb, mrb_debug_context *dbg)
+{
+  debug_command *cmd;
+  dbgcmd_state st = DBGST_CONTINUE;
+  mrdb_state *mrdb = mrdb_state_get(mrb);
+
+  print_info_stopped(mrb, mrdb);
+
+  while (1) {
+    cmd = get_and_parse_command(mrb, mrdb);
+    mrb_assert(cmd);
+
+    st = cmd->func(mrb, mrdb);
+
+    if( (st == DBGST_CONTINUE) || (st == DBGST_RESTART) ) break;
+  }
+  return dbg->xm;
+}
+
+int
+main(int argc, char **argv)
+{
+  mrb_state *mrb = mrb_open();
+  int n = -1;
+  struct _args args;
+  mrb_value v;
+  mrdb_state *mrdb;
+  mrdb_state *mrdb_backup;
+  mrb_debug_context* dbg_backup;
+  debug_command *cmd;
+
+  if (mrb == NULL) {
+    fputs("Invalid mrb_state, exiting mruby\n", stderr);
+    return EXIT_FAILURE;
+  }
+
+ l_restart:
+
+  /* parse command parameters */
+  n = parse_args(mrb, argc, argv, &args);
+  if (n == EXIT_FAILURE || args.rfp == NULL) {
+    cleanup(mrb, &args);
+    usage(argv[0]);
+    return n;
+  }
+
+  /* initialize debugger information */
+  mrdb = mrdb_state_get(mrb);
+  mrb_assert(mrdb && mrdb->dbg);
+  mrdb->srcpath = args.srcpath;
+
+  if(mrdb->dbg->xm == DBG_QUIT) {
+    mrdb->dbg->xphase = DBG_PHASE_RESTART;
+  }
+  else {
+    mrdb->dbg->xphase = DBG_PHASE_BEFORE_RUN;
+  }
+  mrdb->dbg->xm = DBG_INIT;
+  mrdb->dbg->ccnt = 1;
+  
+  /* setup hook functions */
+  mrb->code_fetch_hook = mrb_code_fetch_hook;
+  mrdb->dbg->break_hook = mrb_debug_break_hook;
+
+  if (args.mrbfile) { /* .mrb */
+    v = mrb_load_irep_file(mrb, args.rfp);
+  }
+  else {              /* .rb */
+    mrbc_context *cc = mrbc_context_new(mrb);
+    mrbc_filename(mrb, cc, args.fname);
+    v = mrb_load_file_cxt(mrb, args.rfp, cc);
+    mrbc_context_free(mrb, cc);
+  }
+  if (mrdb->dbg->xm == DBG_QUIT && !mrb_undef_p(v) && mrb->exc) {
+    const char *classname = mrb_obj_classname(mrb, mrb_obj_value(mrb->exc));
+    if (!strcmp(classname, "DebuggerExit")) {
+      cleanup(mrb, &args);
+      return 0;
+    }
+    if (!strcmp(classname, "DebuggerRestart")) {
+      mrdb_backup = mrdb_state_get(mrb);
+      dbg_backup = mrb_debug_context_get(mrb);
+
+      mrdb_state_set(NULL);
+      mrb_debug_context_set(NULL);
+
+      cleanup(mrb, &args);
+      mrb = mrb_open();
+
+      mrdb_state_set(mrdb_backup);
+      mrb_debug_context_set(dbg_backup);
+
+      goto l_restart;
+    }
+  }
+  puts("mruby application exited.");
+  mrdb->dbg->xphase = DBG_PHASE_AFTER_RUN;
+  if (!mrb_undef_p(v)) {
+    if (mrb->exc) {
+      mrb_print_error(mrb);
+    }
+    else {
+      printf(" => ");
+      mrb_p(mrb, v);
+    }
+  }
+  
+  mrdb->dbg->prvfile = "-";
+  mrdb->dbg->prvline = 0;
+  
+  while (1) {
+    cmd = get_and_parse_command(mrb, mrdb);
+    mrb_assert(cmd);
+    
+    if (cmd->id == DBGCMD_QUIT) {
+      break;
+    }
+    
+    if( cmd->func(mrb, mrdb) == DBGST_RESTART ) goto l_restart;
+  }
+  
+  cleanup(mrb, &args);
+
+  return 0;
+}
@@ -0,0 +1,163 @@
+/*
+** mrdb.h - mruby debugger
+**
+*/
+
+#ifndef MRDB_H
+#define MRDB_H
+
+#include "mruby.h"
+
+#include "mrdbconf.h"
+
+#ifdef _MSC_VER
+# define __func__ __FUNCTION__
+#endif
+
+#define MAX_COMMAND_WORD (16)
+
+typedef enum debug_command_id {
+  DBGCMD_RUN,
+  DBGCMD_CONTINUE,
+  DBGCMD_NEXT,
+  DBGCMD_STEP,
+  DBGCMD_BREAK,
+  DBGCMD_INFO_BREAK,
+  DBGCMD_WATCH,
+  DBGCMD_INFO_WATCH,
+  DBGCMD_ENABLE,
+  DBGCMD_DISABLE,
+  DBGCMD_DELETE,
+  DBGCMD_PRINT,
+  DBGCMD_DISPLAY,
+  DBGCMD_INFO_DISPLAY,
+  DBGCMD_DELETE_DISPLAY,
+  DBGCMD_EVAL,
+  DBGCMD_BACKTRACE,
+  DBGCMD_LIST,
+  DBGCMD_HELP,
+  DBGCMD_QUIT,
+  DBGCMD_UNKNOWN
+} debug_command_id;
+
+typedef enum dbgcmd_state {
+  DBGST_CONTINUE,
+  DBGST_PROMPT,
+  DBGST_COMMAND_ERROR,
+  DBGST_MAX,
+  DBGST_RESTART
+} dbgcmd_state;
+
+typedef enum mrdb_exemode {
+  DBG_INIT,
+  DBG_RUN,
+  DBG_STEP,
+  DBG_NEXT,
+  DBG_QUIT,
+} mrdb_exemode;
+
+typedef enum mrdb_exephase {
+  DBG_PHASE_BEFORE_RUN,
+  DBG_PHASE_RUNNING,
+  DBG_PHASE_AFTER_RUN,
+  DBG_PHASE_RESTART,
+} mrdb_exephase;
+
+typedef enum mrdb_brkmode {
+  BRK_INIT,
+  BRK_BREAK,
+  BRK_STEP,
+  BRK_NEXT,
+  BRK_QUIT,
+} mrdb_brkmode;
+
+typedef enum {
+  MRB_DEBUG_BPTYPE_NONE,
+  MRB_DEBUG_BPTYPE_LINE,
+  MRB_DEBUG_BPTYPE_METHOD,
+} mrb_debug_bptype;
+
+struct mrb_irep;
+struct mrbc_context;
+struct mrb_debug_context;
+
+typedef struct mrb_debug_linepoint {
+  const char *file;
+  uint16_t lineno;
+} mrb_debug_linepoint;
+
+typedef struct mrb_debug_methodpoint {
+  const char *class_name;
+  const char *method_name;
+} mrb_debug_methodpoint;
+
+typedef struct mrb_debug_breakpoint {
+  uint32_t bpno;
+  uint8_t enable;
+  mrb_debug_bptype type;
+  union point {
+    mrb_debug_linepoint linepoint;
+    mrb_debug_methodpoint methodpoint;
+  } point;
+} mrb_debug_breakpoint;
+
+typedef struct mrb_debug_context {
+  struct mrb_irep *root_irep;
+  struct mrb_irep *irep;
+  mrb_code *pc;
+  mrb_value *regs;
+
+  const char *prvfile;
+  int32_t prvline;
+
+  mrdb_exemode xm;
+  mrdb_exephase xphase;
+  mrdb_brkmode bm;
+  int16_t bmi;
+
+  uint16_t ccnt;
+  uint16_t scnt;
+
+  mrb_debug_breakpoint bp[MAX_BREAKPOINT];
+  uint32_t bpnum;
+  int32_t next_bpno;
+  int32_t method_bpno;
+  int32_t stopped_bpno;
+  mrb_bool isCfunc;
+
+  mrdb_exemode (*break_hook)(mrb_state *mrb, struct mrb_debug_context *dbg);
+
+} mrb_debug_context;
+
+typedef struct mrdb_state {
+  char *command;
+  uint8_t wcnt;
+  uint8_t pi;
+  char *words[MAX_COMMAND_WORD];
+  const char *srcpath;
+  uint32_t print_no;
+
+  mrb_debug_context *dbg;
+} mrdb_state;
+
+typedef dbgcmd_state (*debug_command_func)(mrb_state*, mrdb_state*);
+
+/* cmdrun.c */
+dbgcmd_state dbgcmd_run(mrb_state*, mrdb_state*);
+dbgcmd_state dbgcmd_continue(mrb_state*, mrdb_state*);
+dbgcmd_state dbgcmd_step(mrb_state*, mrdb_state*);
+/* cmdbreak.c */
+dbgcmd_state dbgcmd_break(mrb_state*, mrdb_state*);
+dbgcmd_state dbgcmd_info_break(mrb_state*, mrdb_state*);
+dbgcmd_state dbgcmd_delete(mrb_state*, mrdb_state*);
+dbgcmd_state dbgcmd_enable(mrb_state*, mrdb_state*);
+dbgcmd_state dbgcmd_disable(mrb_state*, mrdb_state*);
+/* cmdprint.c */
+dbgcmd_state dbgcmd_print(mrb_state*, mrdb_state*);
+dbgcmd_state dbgcmd_eval(mrb_state*, mrdb_state*);
+/* cmdmisc.c */
+dbgcmd_state dbgcmd_list(mrb_state*, mrdb_state*);
+dbgcmd_state dbgcmd_help(mrb_state*, mrdb_state*);
+dbgcmd_state dbgcmd_quit(mrb_state*, mrdb_state*);
+
+#endif
@@ -0,0 +1,16 @@
+/*
+** mrdbconf.h - mruby debugger configuration
+**
+*/
+
+#ifndef MRDBCONF_H
+#define MRDBCONF_H
+
+/* configuration options: */
+/* maximum size for command buffer */
+#define MAX_COMMAND_LINE 1024
+
+/* maximum number of setable breakpoint */
+#define MAX_BREAKPOINT 5
+
+#endif
@@ -0,0 +1,20 @@
+/*
+** mrdberror.h - mruby debugger error code
+**
+*/
+
+#ifndef MRDBERROR_H
+#define MRDBERROR_H
+
+#define MRB_DEBUG_OK                   (0)
+#define MRB_DEBUG_NOBUF                (-1)
+#define MRB_DEBUG_INVALID_ARGUMENT     (-2)
+
+#define MRB_DEBUG_BREAK_INVALID_LINENO (-11)
+#define MRB_DEBUG_BREAK_INVALID_FILE   (-12)
+#define MRB_DEBUG_BREAK_INVALID_NO     (-13)
+#define MRB_DEBUG_BREAK_NUM_OVER       (-14)
+#define MRB_DEBUG_BREAK_NO_OVER        (-15)
+
+#endif
+