Generate resources/version.hpp with the project version

Closes #17

.clang-format

@@ -42,7 +42,7 @@ BreakBeforeTernaryOperators: true
 BreakConstructorInitializersBeforeComma: false
 BreakConstructorInitializers: BeforeColon
 BreakStringLiterals: true
-ColumnLimit:     100
+ColumnLimit:     150
 CommentPragmas:  '^ IWYU pragma:'
 CompactNamespaces: false
 ConstructorInitializerAllOnOneLineOrOnePerLine: false

.gitattributes

@@ -0,0 +1 @@
+CMakeLists.txt linguist-generated

.github/workflows/build.yml

@@ -2,18 +2,64 @@ name: CMake
 
 on: [push, pull_request]
 
-env:
-  # Customize the CMake build type here (Release, Debug, RelWithDebInfo, etc.)
-  BUILD_TYPE: Release
-
 jobs:
   build:
+    # Skip building pull requests from the same repository
+    if: ${{ github.event_name == 'push' || (github.event_name == 'pull_request' && github.event.pull_request.head.repo.full_name != github.repository) }}
     runs-on: ${{ matrix.os }}
     strategy:
+      fail-fast: false
       matrix:
-        os: [windows-latest, macos-10.15]
-
+        os: [windows-2019, macos-10.15, ubuntu-20.04]
+    env:
+      BUILD_TYPE: Release
     steps:
-    - uses: actions/checkout@v2
+    - name: Checkout
+      uses: actions/checkout@v2
+
+    - name: Tag cmkr.cmake
+      if: ${{ startsWith(github.ref, 'refs/tags/') }}
+      run: cmake -P "cmake/replace_tag.cmake"
+
     - name: Build
-      run: cmake -S. -Bbin && cmake --build bin --config $BUILD_TYPE
+      run: |
+        cmake -B build -DCMAKE_BUILD_TYPE=${{ env.BUILD_TYPE }} -DCMAKE_UNITY_BUILD=ON
+        cmake --build build --config ${{ env.BUILD_TYPE }} --parallel
+        cmake --install build --prefix ./install --config ${{ env.BUILD_TYPE }}
+
+    - name: Check if cmkr was run
+      run: |
+        ./install/bin/cmkr gen
+        git diff --exit-code -- . ":(exclude)cmake/cmkr.cmake"
+
+    - name: Test
+      run: |
+        cd build/tests
+        ctest -C ${{ env.BUILD_TYPE }}
+
+    - name: Upload artifacts
+      uses: actions/upload-artifact@v2
+      with:
+        name: ${{ github.event.repository.name }}-${{ matrix.os }}
+        path: install/bin/*
+
+    - name: Get lowercase OS name
+      id: osname
+      uses: ASzc/change-string-case-action@v1
+      with:
+        string: ${{ runner.os }}
+
+    - name: Compress artifacts
+      uses: papeloto/action-zip@v1
+      with:
+        files: install/bin/
+        dest: ${{ github.event.repository.name }}-${{ steps.osname.outputs.lowercase }}.zip
+
+    - name: Release
+      uses: softprops/action-gh-release@v1
+      if: ${{ startsWith(github.ref, 'refs/tags/') }}
+      with:
+        prerelease: ${{ !startsWith(github.ref, 'refs/tags/v') || contains(github.ref, '-pre') }}
+        files: ${{ github.event.repository.name }}-${{ steps.osname.outputs.lowercase }}.zip
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

.gitignore

@@ -4,4 +4,8 @@ compile_commands.json
 .clangd
 temp.*
 .vs
-.cache
+.cache
+build*/
+.idea/
+cmake-build*/
+CMakeLists.txt.user

CHANGELOG.md

@@ -1,16 +0,0 @@
-# CHANGELOG
-
-## 0.1.2 - 2020-11-20
-- Add support for target properties.
-- Add installs.
-- Require cmake >= 3.15.
-- Support settings and caching settings.
-- Support config when running cmkr build.
-
-## 0.1.1 - 2020-11-19
-- Add support for globbing.
-- Add support for find_package components.
-- Add options.
-- Support aliases.
-- Support interface libs (header-only libs).
-- Support testing.

CMakeLists.txt

@@ -1,58 +1,145 @@
-# This file was generated automatically by cmkr.
+# This file is automatically generated from cmake.toml - DO NOT EDIT
+# See https://github.com/build-cpp/cmkr for more information
 
-cmake_minimum_required(VERSION 3.15)
+cmake_minimum_required(VERSION 2.8...3.8)
 
-set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
+if(CMAKE_SOURCE_DIR STREQUAL CMAKE_BINARY_DIR)
+	message(FATAL_ERROR "In-tree builds are not supported. Run CMake from a separate directory: cmake -B build")
+endif()
 
-set(cmkr_PROJECT_VERSION 0.1.2)
-project(cmkr VERSION ${cmkr_PROJECT_VERSION})
+# Regenerate CMakeLists.txt automatically in the root project
+set(CMKR_ROOT_PROJECT OFF)
+if(CMAKE_CURRENT_SOURCE_DIR STREQUAL CMAKE_SOURCE_DIR)
+	set(CMKR_ROOT_PROJECT ON)
 
-include(FetchContent)
+	# Enable folder support
+	set_property(GLOBAL PROPERTY USE_FOLDERS ON)
+endif()
 
-FetchContent_Declare(
-	toml11
-	GIT_REPOSITORY https://github.com/ToruNiina/toml11
-	)
+# Create a configure-time dependency on cmake.toml to improve IDE support
+if(CMKR_ROOT_PROJECT)
+	configure_file(cmake.toml cmake.toml COPYONLY)
+endif()
 
-FetchContent_MakeAvailable(toml11)
+project(cmkr
+	LANGUAGES
+		CXX
+	VERSION
+		0.1.4
+	DESCRIPTION
+		"CMakeLists generator from TOML"
+)
 
-set(CMKRLIB_SOURCES
-	"src/cmake.cpp"
-	"src/gen.cpp"
-	"src/help.cpp"
+include("cmake/generate_documentation.cmake")
+include("cmake/generate_resources.cmake")
+
+# third_party
+set(CMKR_CMAKE_FOLDER ${CMAKE_FOLDER})
+if(CMAKE_FOLDER)
+	set(CMAKE_FOLDER "${CMAKE_FOLDER}/third_party")
+else()
+	set(CMAKE_FOLDER third_party)
+endif()
+add_subdirectory(third_party)
+set(CMAKE_FOLDER ${CMKR_CMAKE_FOLDER})
+
+# tests
+set(CMKR_CMAKE_FOLDER ${CMAKE_FOLDER})
+if(CMAKE_FOLDER)
+	set(CMAKE_FOLDER "${CMAKE_FOLDER}/tests")
+else()
+	set(CMAKE_FOLDER tests)
+endif()
+add_subdirectory(tests)
+set(CMAKE_FOLDER ${CMKR_CMAKE_FOLDER})
+
+
+
+# Target cmkr_generate_documentation
+set(CMKR_TARGET cmkr_generate_documentation)
+set(cmkr_generate_documentation_SOURCES "")
+
+set(CMKR_SOURCES ${cmkr_generate_documentation_SOURCES})
+add_library(cmkr_generate_documentation INTERFACE)
+
+if(cmkr_generate_documentation_SOURCES)
+	target_sources(cmkr_generate_documentation INTERFACE ${cmkr_generate_documentation_SOURCES})
+endif()
+
+generate_documentation()
+
+unset(CMKR_TARGET)
+unset(CMKR_SOURCES)
+
+# Target cmkr
+set(CMKR_TARGET cmkr)
+set(cmkr_SOURCES "")
+
+list(APPEND cmkr_SOURCES
+	"src/arguments.cpp"
 	"src/build.cpp"
+	"src/cmake_generator.cpp"
 	"src/error.cpp"
-	)
-
-add_library(cmkrlib STATIC ${CMKRLIB_SOURCES})
-
-target_include_directories(cmkrlib PUBLIC
-	"include"
-	)
-
-target_link_libraries(cmkrlib PUBLIC
-	toml11::toml11
-	)
-
-target_compile_features(cmkrlib PUBLIC
-	cxx_std_17
-	)
-
-set(CMKR_SOURCES
+	"src/help.cpp"
 	"src/main.cpp"
-	"src/args.cpp"
-	)
+	"src/project_parser.cpp"
+	"include/arguments.hpp"
+	"include/build.hpp"
+	"include/cmake_generator.hpp"
+	"include/enum_helper.hpp"
+	"include/error.hpp"
+	"include/fs.hpp"
+	"include/help.hpp"
+	"include/literals.hpp"
+	"include/project_parser.hpp"
+	"cmake/cmkr.cmake"
+	"cmake/version.hpp.in"
+)
 
-add_executable(cmkr  ${CMKR_SOURCES})
+list(APPEND cmkr_SOURCES
+	cmake.toml
+)
 
-target_link_libraries(cmkr PUBLIC
-	cmkrlib
-	)
+set(CMKR_SOURCES ${cmkr_SOURCES})
+add_executable(cmkr)
+
+if(cmkr_SOURCES)
+	target_sources(cmkr PRIVATE ${cmkr_SOURCES})
+endif()
+
+get_directory_property(CMKR_VS_STARTUP_PROJECT DIRECTORY ${PROJECT_SOURCE_DIR} DEFINITION VS_STARTUP_PROJECT)
+if(NOT CMKR_VS_STARTUP_PROJECT)
+	set_property(DIRECTORY ${PROJECT_SOURCE_DIR} PROPERTY VS_STARTUP_PROJECT cmkr)
+endif()
+
+source_group(TREE ${CMAKE_CURRENT_SOURCE_DIR} FILES ${cmkr_SOURCES})
+
+target_compile_features(cmkr PRIVATE
+	cxx_std_11
+)
+
+target_include_directories(cmkr PRIVATE
+	include
+)
+
+target_link_libraries(cmkr PRIVATE
+	toml11
+	ghc_filesystem
+	mpark_variant
+	ordered_map
+	nlohmann_json
+)
+
+generate_resources(${CMKR_TARGET})
+
+unset(CMKR_TARGET)
+unset(CMKR_SOURCES)
 
 install(
-	TARGETS cmkr 
-	DESTINATION ${CMAKE_INSTALL_PREFIX}/bin
-	)
-
-
-
+	TARGETS
+		cmkr
+	DESTINATION
+		bin
+	COMPONENT
+		cmkr
+)

README.md

@@ -1,156 +1,52 @@
 # cmkr
 
-cmkr, pronounced "cmaker", is A CMakeLists.txt generator from TOML.
+`cmkr`, pronounced "cmaker", is a modern build system based on [CMake](https://cmake.org/) and [TOML](https://toml.io).
 
+`cmkr` parses `cmake.toml` files and generates a modern, idiomatic `CMakeLists.txt` for you. A minimal example:
 
-## Building
-cmkr requires a C++17 compiler, cmake >= 3.15.
-```
-git clone https://github.com/moalyousef/cmkr
-cd cmkr
-cmake -Bbin
-cmake --build bin --parallel
-```
-
-## Usage
-cmkr parses cmake.toml files (using toml11 by Toru Niina) at the project directory. A basic hello world format with the minimum required fields:
 ```toml
-[cmake]
-minimum = "3.15"
-
 [project]
-name = "app"
-version = "0.1.0"
+name = "cmkr_for_beginners"
+description = "A minimal cmkr project."
 
-[[bin]]
-name = "app"
-type = "exe"
+[target.hello_world]
+type = "executable"
 sources = ["src/main.cpp"]
 ```
 
-This project's cmake.toml:
-```toml
-[cmake]
-minimum = "3.15"
+`cmkr` can bootstrap itself from CMake and consumers of your project do not need to install anything to work with it.
 
-[project]
-name = "cmkr"
-version = "0.1.2"
+## Getting started
 
-[fetch-content]
-toml11 = { git = "https://github.com/ToruNiina/toml11" }
+The easiest way to get started is to use the [cmkr_for_beginners](https://github.com/build-cpp/cmkr_for_beginners) template repository. Either open it in [Gitpod](https://gitpod.io/#https://github.com/build-cpp/cmkr_for_beginners), or clone the repository and run:
 
-[[bin]]
-name = "cmkrlib"
-type = "static"
-sources = ["src/cmake.cpp", "src/gen.cpp", "src/help.cpp", "src/build.cpp", "src/error.cpp"]
-include-dirs = ["include"]
-features = ["cxx_std_17"]
-link-libs = ["toml11::toml11"]
-
-[[bin]]
-name = "cmkr"
-type = "exe"
-sources = ["src/main.cpp", "src/args.cpp"]
-link-libs = ["cmkrlib"]
-
-[[install]]
-targets = ["cmkr"]
-destination = "${CMAKE_INSTALL_PREFIX}/bin"
+```sh
+cmake -B build
+cmake --build build
 ```
 
-Currently supported fields:
-```toml
-[cmake] # required for top-level project
-minimum = "3.15" # required
-subdirs = [] # optional
-bin-dir = "bin" # optional
-cpp-flags = [] # optional
-c-flags = [] # optional
-link-flags = [] # optional
-generator = "Ninja" # optional, only valid when run using: cmkr build
-config = "Release" # optional, only valid when run using: cmkr build
-arguments = ["CMAKE_TOOLCHAIN_FILE=/path/to/toolchain"] # optional, valid when run using: cmkr build
+Alternatively you can check out the [cmkr topic](https://github.com/topics/cmkr), the [build-cpp organization](https://github.com/build-cpp) or the [tests](https://github.com/build-cpp/cmkr/tree/main/tests) for more examples and templates. You can also check out the [documentation](https://build-cpp.github.io/cmkr).
 
-[settings] # optional
-CMAKE_BUILD_TYPE = "Release"
-TOML_BUILD_TESTS = false # optional
-TOML_BUILD_DOCS = { value = false, comment = "builds dependency docs", cache = true, force = true } # optional
-OLD_VERSION = "0.1.1" # optional
+## Command line
 
-[project] # required per project
-name = "app" # required
-version = "0.1.0" # required
+Optionally you can install `cmkr` in your `PATH` and use it as a utility from the command line:
 
-[find-package] # optional, runs find_package, use "*" to ignore version
-Boost = { version = "1.74.0", required = false, components = ["system"] } # optional
-spdlog = "*"
-
-[fetch-content] # optional, runs fetchContent
-toml11 = { git = "https://github.com/ToruNiina/toml11", tag = "v3.5.0" } # optional
-
-[options] # optional
-APP_BUILD_STUFF = false # optional
-APP_OTHER_STUFF = { comment = "does other stuff", value = false } # optional
-
-[[bin]] # required, can define several binaries
-name = "app" # required
-type = "exe" # required (exe || lib || shared || static || interface)
-sources = ["src/*.cpp"] # required, supports globbing
-include-dirs = ["include"] # optional
-alias = "" # optional
-features = [] # optional
-defines = [] # optional
-link-libs = [] # optional 
-properties = { PROPERTY1 = "property1", ... } # optional
-
-[[test]] # optional, can define several
-name = "test1" # required
-command = "app" # required
-arguments = ["arg1", "arg2"] # optional
-
-[[install]] # optional, can define several
-targets = ["app"] # optional
-files = ["include/*.h"] # optional
-dirs = [] # optional
-configs = [] # optional (Release|Debug...etc)
-destination = "${CMAKE_INSTALL_PREFIX}/bin" # required
-```
-
-The cmkr executable can be run from the command-line:
 ```
 Usage: cmkr [arguments]
 arguments:
-    init     [exe|lib|shared|static|interface]    Starts a new project in the same directory.
-    gen                                           Generates CMakeLists.txt file.
-    build    <extra cmake args>                   Run cmake and build.
-    install                                       Run cmake --install. Needs admin privileges.
-    clean                                         Clean the build directory.
-    help                                          Show help.
-    version                                       Current cmkr version.
-```
-The build command invokes cmake and the default build-system on your platform (unless a generator is specified), it also accepts extra cmake build arguments:
-```
-cmkr build --config Release 
+    init    [executable|library|shared|static|interface] Starts a new project in the same directory.
+    gen                                                  Generates CMakeLists.txt file.
+    build   <extra cmake args>                           Run cmake and build.
+    install                                              Run cmake --install. Needs admin privileges.
+    clean                                                Clean the build directory.
+    help                                                 Show help.
+    version                                              Current cmkr version.
 ```
 
-## Binary types
+## Credits
 
-### exe
-Executable binary.
-
-### lib
-Library, can be static or shared depending on the BUILD_SHARED_LIBS variable.
-
-### static
-Static library/archive.
-
-### shared
-Shared/dynamic library.
-
-### interface
-Header-only library.
-
-## Roadmap
-- Support more cmake fields.
-- Support conditional cmake args somehow!
+- https://github.com/gulrak/filesystem
+- https://github.com/Tessil/ordered-map
+- https://github.com/ToruNiina/toml11
+- https://github.com/mpark/variant
+- https://www.svgrepo.com/svg/192268/hammer

cmake.toml

@@ -1,27 +1,47 @@
 [cmake]
-minimum = "3.15"
+version = "2.8...3.8"
+cmkr-include = false
 
 [project]
 name = "cmkr"
-version = "0.1.2"
+version = "0.1.4"
+description = "CMakeLists generator from TOML"
+languages = ["CXX"]
+subdirs = ["third_party", "tests"]
+include-after = [
+    "cmake/generate_documentation.cmake",
+    "cmake/generate_resources.cmake"
+]
 
-[fetch-content]
-toml11 = { git = "https://github.com/ToruNiina/toml11" }
+[target.cmkr_generate_documentation]
+type = "interface"
+cmake-after = """
+generate_documentation()
+"""
 
-[[bin]]
-name = "cmkrlib"
-type = "static"
-sources = ["src/cmake.cpp", "src/gen.cpp", "src/help.cpp", "src/build.cpp", "src/error.cpp"]
-include-dirs = ["include"]
-features = ["cxx_std_17"]
-link-libs = ["toml11::toml11"]
-
-[[bin]]
-name = "cmkr"
-type = "exe"
-sources = ["src/main.cpp", "src/args.cpp"]
-link-libs = ["cmkrlib"]
+[target.cmkr]
+type = "executable"
+sources = [
+    "src/*.cpp",
+    "include/*.hpp",
+    "cmake/cmkr.cmake",
+    "cmake/version.hpp.in",
+]
+include-directories = [
+    "include",
+]
+compile-features = ["cxx_std_11"]
+link-libraries = [
+    "toml11",
+    "ghc_filesystem",
+    "mpark_variant",
+    "ordered_map",
+    "nlohmann_json",
+]
+cmake-after = """
+generate_resources(${CMKR_TARGET})
+"""
 
 [[install]]
 targets = ["cmkr"]
-destination = "${CMAKE_INSTALL_PREFIX}/bin"
+destination = "bin"

cmake/cmkr.cmake

@@ -0,0 +1,196 @@
+include_guard()
+
+if(CMAKE_SCRIPT_MODE_FILE)
+    message(FATAL_ERROR "Running cmkr.cmake as a script is unsupported. To build your project try: cmake -B build")
+endif()
+
+# Change these defaults to point to your infrastructure if desired
+set(CMKR_REPO "https://github.com/build-cpp/cmkr" CACHE STRING "cmkr git repository" FORCE)
+set(CMKR_TAG "archive_52671dcf" CACHE STRING "cmkr git tag (this needs to be available forever)" FORCE)
+
+# Set these from the command line to customize for development/debugging purposes
+set(CMKR_EXECUTABLE "" CACHE FILEPATH "cmkr executable")
+set(CMKR_SKIP_GENERATION OFF CACHE BOOL "skip automatic cmkr generation")
+set(CMKR_BUILD_TYPE "Debug" CACHE STRING "cmkr build configuration")
+
+# Disable cmkr if generation is disabled
+if(DEFINED ENV{CI} OR CMKR_SKIP_GENERATION OR CMKR_BUILD_SKIP_GENERATION)
+    message(STATUS "[cmkr] Skipping automatic cmkr generation")
+    unset(CMKR_BUILD_SKIP_GENERATION CACHE)
+    macro(cmkr)
+    endmacro()
+    return()
+endif()
+
+# Disable cmkr if no cmake.toml file is found
+if(NOT EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/cmake.toml")
+    message(AUTHOR_WARNING "[cmkr] Not found: ${CMAKE_CURRENT_SOURCE_DIR}/cmake.toml")
+    macro(cmkr)
+    endmacro()
+    return()
+endif()
+
+# Convert a Windows native path to CMake path
+if(CMKR_EXECUTABLE MATCHES "\\\\")
+    string(REPLACE "\\" "/" CMKR_EXECUTABLE_CMAKE "${CMKR_EXECUTABLE}")
+    set(CMKR_EXECUTABLE "${CMKR_EXECUTABLE_CMAKE}" CACHE FILEPATH "" FORCE)
+    unset(CMKR_EXECUTABLE_CMAKE)
+endif()
+
+# Helper macro to execute a process (COMMAND_ERROR_IS_FATAL ANY is 3.19 and higher)
+function(cmkr_exec)
+    execute_process(COMMAND ${ARGV} RESULT_VARIABLE CMKR_EXEC_RESULT)
+    if(NOT CMKR_EXEC_RESULT EQUAL 0)
+        message(FATAL_ERROR "cmkr_exec(${ARGV}) failed (exit code ${CMKR_EXEC_RESULT})")
+    endif()
+endfunction()
+
+# Windows-specific hack (CMAKE_EXECUTABLE_PREFIX is not set at the moment)
+if(WIN32)
+    set(CMKR_EXECUTABLE_NAME "cmkr.exe")
+else()
+    set(CMKR_EXECUTABLE_NAME "cmkr")
+endif()
+
+# Use cached cmkr if found
+if(DEFINED ENV{CMKR_CACHE} AND EXISTS "$ENV{CMKR_CACHE}")
+    set(CMKR_DIRECTORY_PREFIX "$ENV{CMKR_CACHE}")
+    string(REPLACE "\\" "/" CMKR_DIRECTORY_PREFIX "${CMKR_DIRECTORY_PREFIX}")
+    if(NOT CMKR_DIRECTORY_PREFIX MATCHES "\\/$")
+        set(CMKR_DIRECTORY_PREFIX "${CMKR_DIRECTORY_PREFIX}/")
+    endif()
+else()
+    set(CMKR_DIRECTORY_PREFIX "${CMAKE_CURRENT_BINARY_DIR}/_cmkr_")
+endif()
+set(CMKR_DIRECTORY "${CMKR_DIRECTORY_PREFIX}${CMKR_TAG}")
+set(CMKR_CACHED_EXECUTABLE "${CMKR_DIRECTORY}/bin/${CMKR_EXECUTABLE_NAME}")
+
+# Handle upgrading logic
+if(CMKR_EXECUTABLE AND NOT CMKR_CACHED_EXECUTABLE STREQUAL CMKR_EXECUTABLE)    
+    if(CMKR_EXECUTABLE MATCHES "^${CMAKE_CURRENT_BINARY_DIR}/_cmkr")
+        if(DEFINED ENV{CMKR_CACHE} AND EXISTS "$ENV{CMKR_CACHE}")
+            message(AUTHOR_WARNING "[cmkr] Switching to cached cmkr: '${CMKR_CACHED_EXECUTABLE}'")
+            if(EXISTS "${CMKR_CACHED_EXECUTABLE}")
+                set(CMKR_EXECUTABLE "${CMKR_CACHED_EXECUTABLE}" CACHE FILEPATH "Full path to cmkr executable" FORCE)
+            else()
+                unset(CMKR_EXECUTABLE CACHE)
+            endif()
+        else()
+            message(AUTHOR_WARNING "[cmkr] Upgrading '${CMKR_EXECUTABLE}' to '${CMKR_CACHED_EXECUTABLE}'")
+            unset(CMKR_EXECUTABLE CACHE)
+        endif()
+    elseif(DEFINED ENV{CMKR_CACHE} AND EXISTS "$ENV{CMKR_CACHE}" AND CMKR_EXECUTABLE MATCHES "^${CMKR_DIRECTORY_PREFIX}")
+        message(AUTHOR_WARNING "[cmkr] Upgrading cached '${CMKR_EXECUTABLE}' to '${CMKR_CACHED_EXECUTABLE}'")
+        unset(CMKR_EXECUTABLE CACHE)
+    endif()
+endif()
+
+if(CMKR_EXECUTABLE AND EXISTS "${CMKR_EXECUTABLE}")
+    message(VERBOSE "[cmkr] Found cmkr: '${CMKR_EXECUTABLE}'")
+elseif(CMKR_EXECUTABLE AND NOT CMKR_EXECUTABLE STREQUAL CMKR_CACHED_EXECUTABLE)
+    message(FATAL_ERROR "[cmkr] '${CMKR_EXECUTABLE}' not found")
+elseif(NOT CMKR_EXECUTABLE AND EXISTS "${CMKR_CACHED_EXECUTABLE}")
+    set(CMKR_EXECUTABLE "${CMKR_CACHED_EXECUTABLE}" CACHE FILEPATH "Full path to cmkr executable" FORCE)
+    message(STATUS "[cmkr] Found cached cmkr: '${CMKR_EXECUTABLE}'")
+else()
+    set(CMKR_EXECUTABLE "${CMKR_CACHED_EXECUTABLE}" CACHE FILEPATH "Full path to cmkr executable" FORCE)
+    message(VERBOSE "[cmkr] Bootstrapping '${CMKR_EXECUTABLE}'")
+    
+    message(STATUS "[cmkr] Fetching cmkr...")
+    if(EXISTS "${CMKR_DIRECTORY}")
+        cmkr_exec("${CMAKE_COMMAND}" -E rm -rf "${CMKR_DIRECTORY}")
+    endif()
+    find_package(Git QUIET REQUIRED)
+    cmkr_exec("${GIT_EXECUTABLE}"
+        clone
+        --config advice.detachedHead=false
+        --branch ${CMKR_TAG}
+        --depth 1
+        ${CMKR_REPO}
+        "${CMKR_DIRECTORY}"
+    )
+    message(STATUS "[cmkr] Building cmkr (using system compiler)...")
+    cmkr_exec("${CMAKE_COMMAND}"
+        --no-warn-unused-cli
+        "${CMKR_DIRECTORY}"
+        "-B${CMKR_DIRECTORY}/build"
+        "-DCMAKE_BUILD_TYPE=${CMKR_BUILD_TYPE}"
+        "-DCMAKE_UNITY_BUILD=ON"
+        "-DCMAKE_INSTALL_PREFIX=${CMKR_DIRECTORY}"
+        "-DCMKR_GENERATE_DOCUMENTATION=OFF"
+    )
+    cmkr_exec("${CMAKE_COMMAND}"
+        --build "${CMKR_DIRECTORY}/build"
+        --config "${CMKR_BUILD_TYPE}"
+        --parallel
+    )
+    cmkr_exec("${CMAKE_COMMAND}"
+        --install "${CMKR_DIRECTORY}/build"
+        --config "${CMKR_BUILD_TYPE}"
+        --prefix "${CMKR_DIRECTORY}"
+        --component cmkr
+    )
+    if(NOT EXISTS ${CMKR_EXECUTABLE})
+        message(FATAL_ERROR "[cmkr] Failed to bootstrap '${CMKR_EXECUTABLE}'")
+    endif()
+    cmkr_exec("${CMKR_EXECUTABLE}" version)
+    message(STATUS "[cmkr] Bootstrapped ${CMKR_EXECUTABLE}")
+endif()
+execute_process(COMMAND "${CMKR_EXECUTABLE}" version
+    RESULT_VARIABLE CMKR_EXEC_RESULT
+)
+if(NOT CMKR_EXEC_RESULT EQUAL 0)
+    message(FATAL_ERROR "[cmkr] Failed to get version, try clearing the cache and rebuilding")
+endif()
+
+# This is the macro that contains black magic
+macro(cmkr)
+    # When this macro is called from the generated file, fake some internal CMake variables
+    get_source_file_property(CMKR_CURRENT_LIST_FILE "${CMAKE_CURRENT_LIST_FILE}" CMKR_CURRENT_LIST_FILE)
+    if(CMKR_CURRENT_LIST_FILE)
+        set(CMAKE_CURRENT_LIST_FILE "${CMKR_CURRENT_LIST_FILE}")
+        get_filename_component(CMAKE_CURRENT_LIST_DIR "${CMAKE_CURRENT_LIST_FILE}" DIRECTORY)
+    endif()
+
+    # File-based include guard (include_guard is not documented to work)
+    get_source_file_property(CMKR_INCLUDE_GUARD "${CMAKE_CURRENT_LIST_FILE}" CMKR_INCLUDE_GUARD)
+    if(NOT CMKR_INCLUDE_GUARD)
+        set_source_files_properties("${CMAKE_CURRENT_LIST_FILE}" PROPERTIES CMKR_INCLUDE_GUARD TRUE)
+
+        file(SHA256 "${CMAKE_CURRENT_LIST_FILE}" CMKR_LIST_FILE_SHA256_PRE)
+
+        # Generate CMakeLists.txt
+        cmkr_exec("${CMKR_EXECUTABLE}" gen
+            WORKING_DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}"
+        )
+
+        file(SHA256 "${CMAKE_CURRENT_LIST_FILE}" CMKR_LIST_FILE_SHA256_POST)
+
+        # Delete the temporary file if it was left for some reason
+        set(CMKR_TEMP_FILE "${CMAKE_CURRENT_SOURCE_DIR}/CMakerLists.txt")
+        if(EXISTS "${CMKR_TEMP_FILE}")
+            file(REMOVE "${CMKR_TEMP_FILE}")
+        endif()
+
+        if(NOT CMKR_LIST_FILE_SHA256_PRE STREQUAL CMKR_LIST_FILE_SHA256_POST)
+            # Copy the now-generated CMakeLists.txt to CMakerLists.txt
+            # This is done because you cannot include() a file you are currently in
+            configure_file(CMakeLists.txt "${CMKR_TEMP_FILE}" COPYONLY)
+            
+            # Add the macro required for the hack at the start of the cmkr macro
+            set_source_files_properties("${CMKR_TEMP_FILE}" PROPERTIES
+                CMKR_CURRENT_LIST_FILE "${CMAKE_CURRENT_LIST_FILE}"
+            )
+            
+            # 'Execute' the newly-generated CMakeLists.txt
+            include("${CMKR_TEMP_FILE}")
+            
+            # Delete the generated file
+            file(REMOVE "${CMKR_TEMP_FILE}")
+            
+            # Do not execute the rest of the original CMakeLists.txt
+            return()
+        endif()
+        # Resume executing the unmodified CMakeLists.txt
+    endif()
+endmacro()

cmake/example.md.in

@@ -0,0 +1,20 @@
+---
+# Automatically generated from tests/@EXAMPLE_PERMALINK@/cmake.toml - DO NOT EDIT
+layout: default
+title: @EXAMPLE_TITLE@
+permalink: /examples/@EXAMPLE_PERMALINK@
+parent: Examples
+nav_order: @EXAMPLE_INDEX@
+---
+
+# @EXAMPLE_TITLE@
+
+@EXAMPLE_HEADER@
+
+```toml
+@EXAMPLE_TOML@
+```
+
+@EXAMPLE_FOOTER@
+
+<sup><sub>This page was automatically generated from [tests/@EXAMPLE_PERMALINK@/cmake.toml](https://github.com/build-cpp/cmkr/tree/main/tests/@EXAMPLE_PERMALINK@/cmake.toml).</sub></sup>

cmake/generate_documentation.cmake

@@ -0,0 +1,76 @@
+option(CMKR_GENERATE_DOCUMENTATION "Generate cmkr documentation" ${CMKR_ROOT_PROJECT})
+set(CMKR_TESTS "" CACHE INTERNAL "List of test directories in the order declared in tests/cmake.toml")
+
+if(CMKR_GENERATE_DOCUMENTATION)
+    # Hook the add_test function to capture the tests in the order declared in tests/cmake.toml
+    function(add_test)
+        cmake_parse_arguments(TEST "" "WORKING_DIRECTORY" "" ${ARGN})
+        get_filename_component(TEST_WORKING_DIRECTORY "${TEST_WORKING_DIRECTORY}" NAME)
+        list(APPEND CMKR_TESTS "${TEST_WORKING_DIRECTORY}")
+        set(CMKR_TESTS "${CMKR_TESTS}" CACHE INTERNAL "")
+        _add_test(${test} ${ARGN})
+    endfunction()
+endif()
+
+function(generate_documentation)
+    if(CMKR_GENERATE_DOCUMENTATION)
+        message(STATUS "[cmkr] Generating documentation...")
+        
+        # Delete previously generated examples
+        set(example_folder "${PROJECT_SOURCE_DIR}/docs/examples")
+        file(GLOB example_files "${example_folder}/*.md")
+        list(REMOVE_ITEM example_files "${example_folder}/index.md")
+        if(example_files)
+            file(REMOVE ${example_files})
+        endif()
+
+        message(DEBUG "[cmkr] Test directories: ${CMKR_TESTS}")
+        set(test_index 0)
+        foreach(test_dir ${CMKR_TESTS})
+            set(test_name "${test_dir}")
+            set(test_dir "${PROJECT_SOURCE_DIR}/tests/${test_dir}")
+            set(test_toml "${test_dir}/cmake.toml")
+            if(IS_DIRECTORY "${test_dir}" AND EXISTS "${test_toml}")
+                message(DEBUG "[cmkr] Generating documentation for: ${test_toml} (index: ${test_index})")
+
+                # Set template variables
+                set(EXAMPLE_PERMALINK "${test_name}")
+                set(EXAMPLE_INDEX ${test_index})
+                math(EXPR test_index "${test_index}+1")
+
+                # Read cmake.toml file
+                file(READ "${test_toml}" test_contents NO_HEX_CONVERSION)
+                string(LENGTH "${test_contents}" toml_length)
+                
+                # Extract header text
+                string(REGEX MATCH "^(\n*(#[^\n]+\n)+\n*)" EXAMPLE_HEADER "${test_contents}")
+                string(LENGTH "${EXAMPLE_HEADER}" header_length)
+                string(STRIP "${EXAMPLE_HEADER}" EXAMPLE_HEADER)
+                string(REGEX REPLACE "\n# ?" "\n" EXAMPLE_HEADER "\n${EXAMPLE_HEADER}")
+                string(STRIP "${EXAMPLE_HEADER}" EXAMPLE_HEADER)
+                
+                # Extract footer text
+                string(REGEX MATCH "(((#[^\n]+)(\n+|$))+)$" EXAMPLE_FOOTER "${test_contents}")
+                string(LENGTH "${EXAMPLE_FOOTER}" footer_length)
+                string(STRIP "${EXAMPLE_FOOTER}" EXAMPLE_FOOTER)
+                string(REGEX REPLACE "\n# ?" "\n" EXAMPLE_FOOTER "\n${EXAMPLE_FOOTER}")
+                string(STRIP "${EXAMPLE_FOOTER}" EXAMPLE_FOOTER)
+                
+                # Extract toml body
+                math(EXPR toml_length "${toml_length}-${header_length}-${footer_length}")
+                string(SUBSTRING "${test_contents}" ${header_length} ${toml_length} EXAMPLE_TOML)
+                string(STRIP "${EXAMPLE_TOML}" EXAMPLE_TOML)
+
+                # Extract title from description
+                if("${EXAMPLE_TOML}" MATCHES "description *= *\"([^\"]+)\"")
+                    set(EXAMPLE_TITLE "${CMAKE_MATCH_1}")
+    
+                    # Generate documentation markdown page
+                    configure_file("${PROJECT_SOURCE_DIR}/cmake/example.md.in" "${example_folder}/${EXAMPLE_PERMALINK}.md" @ONLY NEWLINE_STYLE LF)
+                else()
+                    message(DEBUG "[cmkr] Skipping documentation generation for ${test_name} because description is missing")
+                endif()
+            endif()
+        endforeach()
+    endif()
+endfunction()

cmake/generate_resources.cmake

@@ -0,0 +1,24 @@
+# Enumerates the target sources and automatically generates include/resources/${RESOURCE_NAME}.h from all .cmake files
+function(generate_resources target)
+    get_property(TARGET_SOURCES
+        TARGET ${target}
+        PROPERTY SOURCES
+    )
+    foreach(SOURCE ${TARGET_SOURCES})
+        get_filename_component(RESOURCE_NAME "${SOURCE}" NAME_WE)
+        set(RESOURCE_HEADER "include/resources/${RESOURCE_NAME}.hpp")
+
+        if(SOURCE MATCHES ".cmake$")
+            # Add configure-time dependency on the source file
+            configure_file("${SOURCE}" "${RESOURCE_HEADER}" COPYONLY)
+            # Generate the actual resource into the header
+            file(READ "${SOURCE}" RESOURCE_CONTENTS)
+            configure_file("${PROJECT_SOURCE_DIR}/cmake/resource.hpp.in" "${RESOURCE_HEADER}" @ONLY)
+            message(STATUS "[cmkr] Generated ${RESOURCE_HEADER}")
+        elseif(SOURCE MATCHES ".in$")
+            configure_file("${SOURCE}" "${RESOURCE_HEADER}" @ONLY)
+            message(STATUS "[cmkr] Generated ${RESOURCE_HEADER}")
+        endif()
+    endforeach()
+    target_include_directories(${target} PUBLIC "${CMAKE_CURRENT_BINARY_DIR}/include")
+endfunction()

cmake/replace_tag.cmake

@@ -0,0 +1,27 @@
+cmake_minimum_required(VERSION 3.20)
+
+find_package(Git REQUIRED)
+
+execute_process(COMMAND
+    "${GIT_EXECUTABLE}" name-rev --tags --name-only HEAD
+    OUTPUT_VARIABLE GIT_TAG
+)
+
+string(FIND "${GIT_TAG}" "\n" NEWLINE_POS)
+string(SUBSTRING "${GIT_TAG}" 0 ${NEWLINE_POS} GIT_TAG)
+string(STRIP "${GIT_TAG}" GIT_TAG)
+
+if("${GIT_TAG}" STREQUAL "")
+    message(FATAL_ERROR "Failed to retrieve git tag!")
+endif()
+
+message(STATUS "CMKR_TAG: '${GIT_TAG}'")
+
+file(READ "cmake/cmkr.cmake" CMKR_CMAKE)
+string(REGEX REPLACE "CMKR_TAG \"[^\"]+\"" "CMKR_TAG \"${GIT_TAG}\"" CMKR_CMAKE "${CMKR_CMAKE}")
+file(CONFIGURE
+    OUTPUT "cmake/cmkr.cmake"
+    CONTENT "${CMKR_CMAKE}"
+    @ONLY
+    NEWLINE_STYLE LF
+)

cmake/resource.hpp.in

@@ -0,0 +1,7 @@
+namespace cmkr {
+namespace resources {
+
+static const char* @RESOURCE_NAME@ = R"RESOURCE(@RESOURCE_CONTENTS@)RESOURCE";
+
+}
+}

cmake/version.hpp.in

@@ -0,0 +1,3 @@
+#pragma once
+
+#define CMKR_VERSION "@PROJECT_VERSION@"

docs/.gitignore

@@ -0,0 +1,2 @@
+_site/
+.jekyll-metadata

docs/404.html

@@ -0,0 +1,25 @@
+---
+permalink: /404.html
+layout: default
+---
+
+<style type="text/css" media="screen">
+  .container {
+    margin: 10px auto;
+    max-width: 600px;
+    text-align: center;
+  }
+  h1 {
+    margin: 30px 0;
+    font-size: 4em;
+    line-height: 1;
+    letter-spacing: -1px;
+  }
+</style>
+
+<div class="container">
+  <h1>404</h1>
+
+  <p><strong>Page not found :(</strong></p>
+  <p>The requested page could not be found.</p>
+</div>

docs/Gemfile

@@ -0,0 +1,15 @@
+source "https://rubygems.org"
+gem "minima", "~> 2.5"
+gem "github-pages", group: :jekyll_plugins
+
+gem "jekyll-remote-theme"
+
+platforms :mingw, :x64_mingw, :mswin, :jruby do
+  gem "tzinfo", "~> 1.2"
+  gem "tzinfo-data"
+end
+
+gem "wdm", "~> 0.1.1", :platforms => [:mingw, :x64_mingw, :mswin]
+gem "just-the-docs"
+
+gem "webrick", "~> 1.7"

docs/Gemfile.lock

@@ -0,0 +1,282 @@
+GEM
+  remote: https://rubygems.org/
+  specs:
+    activesupport (6.0.3.6)
+      concurrent-ruby (~> 1.0, >= 1.0.2)
+      i18n (>= 0.7, < 2)
+      minitest (~> 5.1)
+      tzinfo (~> 1.1)
+      zeitwerk (~> 2.2, >= 2.2.2)
+    addressable (2.7.0)
+      public_suffix (>= 2.0.2, < 5.0)
+    coffee-script (2.4.1)
+      coffee-script-source
+      execjs
+    coffee-script-source (1.11.1)
+    colorator (1.1.0)
+    commonmarker (0.17.13)
+      ruby-enum (~> 0.5)
+    concurrent-ruby (1.1.8)
+    dnsruby (1.61.5)
+      simpleidn (~> 0.1)
+    em-websocket (0.5.2)
+      eventmachine (>= 0.12.9)
+      http_parser.rb (~> 0.6.0)
+    ethon (0.14.0)
+      ffi (>= 1.15.0)
+    eventmachine (1.2.7)
+    execjs (2.7.0)
+    faraday (1.4.1)
+      faraday-excon (~> 1.1)
+      faraday-net_http (~> 1.0)
+      faraday-net_http_persistent (~> 1.1)
+      multipart-post (>= 1.2, < 3)
+      ruby2_keywords (>= 0.0.4)
+    faraday-excon (1.1.0)
+    faraday-net_http (1.0.1)
+    faraday-net_http_persistent (1.1.0)
+    ffi (1.15.0)
+    forwardable-extended (2.6.0)
+    gemoji (3.0.1)
+    github-pages (214)
+      github-pages-health-check (= 1.17.0)
+      jekyll (= 3.9.0)
+      jekyll-avatar (= 0.7.0)
+      jekyll-coffeescript (= 1.1.1)
+      jekyll-commonmark-ghpages (= 0.1.6)
+      jekyll-default-layout (= 0.1.4)
+      jekyll-feed (= 0.15.1)
+      jekyll-gist (= 1.5.0)
+      jekyll-github-metadata (= 2.13.0)
+      jekyll-mentions (= 1.6.0)
+      jekyll-optional-front-matter (= 0.3.2)
+      jekyll-paginate (= 1.1.0)
+      jekyll-readme-index (= 0.3.0)
+      jekyll-redirect-from (= 0.16.0)
+      jekyll-relative-links (= 0.6.1)
+      jekyll-remote-theme (= 0.4.3)
+      jekyll-sass-converter (= 1.5.2)
+      jekyll-seo-tag (= 2.7.1)
+      jekyll-sitemap (= 1.4.0)
+      jekyll-swiss (= 1.0.0)
+      jekyll-theme-architect (= 0.1.1)
+      jekyll-theme-cayman (= 0.1.1)
+      jekyll-theme-dinky (= 0.1.1)
+      jekyll-theme-hacker (= 0.1.2)
+      jekyll-theme-leap-day (= 0.1.1)
+      jekyll-theme-merlot (= 0.1.1)
+      jekyll-theme-midnight (= 0.1.1)
+      jekyll-theme-minimal (= 0.1.1)
+      jekyll-theme-modernist (= 0.1.1)
+      jekyll-theme-primer (= 0.5.4)
+      jekyll-theme-slate (= 0.1.1)
+      jekyll-theme-tactile (= 0.1.1)
+      jekyll-theme-time-machine (= 0.1.1)
+      jekyll-titles-from-headings (= 0.5.3)
+      jemoji (= 0.12.0)
+      kramdown (= 2.3.1)
+      kramdown-parser-gfm (= 1.1.0)
+      liquid (= 4.0.3)
+      mercenary (~> 0.3)
+      minima (= 2.5.1)
+      nokogiri (>= 1.10.4, < 2.0)
+      rouge (= 3.26.0)
+      terminal-table (~> 1.4)
+    github-pages-health-check (1.17.0)
+      addressable (~> 2.3)
+      dnsruby (~> 1.60)
+      octokit (~> 4.0)
+      public_suffix (>= 2.0.2, < 5.0)
+      typhoeus (~> 1.3)
+    html-pipeline (2.14.0)
+      activesupport (>= 2)
+      nokogiri (>= 1.4)
+    http_parser.rb (0.6.0)
+    i18n (0.9.5)
+      concurrent-ruby (~> 1.0)
+    jekyll (3.9.0)
+      addressable (~> 2.4)
+      colorator (~> 1.0)
+      em-websocket (~> 0.5)
+      i18n (~> 0.7)
+      jekyll-sass-converter (~> 1.0)
+      jekyll-watch (~> 2.0)
+      kramdown (>= 1.17, < 3)
+      liquid (~> 4.0)
+      mercenary (~> 0.3.3)
+      pathutil (~> 0.9)
+      rouge (>= 1.7, < 4)
+      safe_yaml (~> 1.0)
+    jekyll-avatar (0.7.0)
+      jekyll (>= 3.0, < 5.0)
+    jekyll-coffeescript (1.1.1)
+      coffee-script (~> 2.2)
+      coffee-script-source (~> 1.11.1)
+    jekyll-commonmark (1.3.1)
+      commonmarker (~> 0.14)
+      jekyll (>= 3.7, < 5.0)
+    jekyll-commonmark-ghpages (0.1.6)
+      commonmarker (~> 0.17.6)
+      jekyll-commonmark (~> 1.2)
+      rouge (>= 2.0, < 4.0)
+    jekyll-default-layout (0.1.4)
+      jekyll (~> 3.0)
+    jekyll-feed (0.15.1)
+      jekyll (>= 3.7, < 5.0)
+    jekyll-gist (1.5.0)
+      octokit (~> 4.2)
+    jekyll-github-metadata (2.13.0)
+      jekyll (>= 3.4, < 5.0)
+      octokit (~> 4.0, != 4.4.0)
+    jekyll-mentions (1.6.0)
+      html-pipeline (~> 2.3)
+      jekyll (>= 3.7, < 5.0)
+    jekyll-optional-front-matter (0.3.2)
+      jekyll (>= 3.0, < 5.0)
+    jekyll-paginate (1.1.0)
+    jekyll-readme-index (0.3.0)
+      jekyll (>= 3.0, < 5.0)
+    jekyll-redirect-from (0.16.0)
+      jekyll (>= 3.3, < 5.0)
+    jekyll-relative-links (0.6.1)
+      jekyll (>= 3.3, < 5.0)
+    jekyll-remote-theme (0.4.3)
+      addressable (~> 2.0)
+      jekyll (>= 3.5, < 5.0)
+      jekyll-sass-converter (>= 1.0, <= 3.0.0, != 2.0.0)
+      rubyzip (>= 1.3.0, < 3.0)
+    jekyll-sass-converter (1.5.2)
+      sass (~> 3.4)
+    jekyll-seo-tag (2.7.1)
+      jekyll (>= 3.8, < 5.0)
+    jekyll-sitemap (1.4.0)
+      jekyll (>= 3.7, < 5.0)
+    jekyll-swiss (1.0.0)
+    jekyll-theme-architect (0.1.1)
+      jekyll (~> 3.5)
+      jekyll-seo-tag (~> 2.0)
+    jekyll-theme-cayman (0.1.1)
+      jekyll (~> 3.5)
+      jekyll-seo-tag (~> 2.0)
+    jekyll-theme-dinky (0.1.1)
+      jekyll (~> 3.5)
+      jekyll-seo-tag (~> 2.0)
+    jekyll-theme-hacker (0.1.2)
+      jekyll (> 3.5, < 5.0)
+      jekyll-seo-tag (~> 2.0)
+    jekyll-theme-leap-day (0.1.1)
+      jekyll (~> 3.5)
+      jekyll-seo-tag (~> 2.0)
+    jekyll-theme-merlot (0.1.1)
+      jekyll (~> 3.5)
+      jekyll-seo-tag (~> 2.0)
+    jekyll-theme-midnight (0.1.1)
+      jekyll (~> 3.5)
+      jekyll-seo-tag (~> 2.0)
+    jekyll-theme-minimal (0.1.1)
+      jekyll (~> 3.5)
+      jekyll-seo-tag (~> 2.0)
+    jekyll-theme-modernist (0.1.1)
+      jekyll (~> 3.5)
+      jekyll-seo-tag (~> 2.0)
+    jekyll-theme-primer (0.5.4)
+      jekyll (> 3.5, < 5.0)
+      jekyll-github-metadata (~> 2.9)
+      jekyll-seo-tag (~> 2.0)
+    jekyll-theme-slate (0.1.1)
+      jekyll (~> 3.5)
+      jekyll-seo-tag (~> 2.0)
+    jekyll-theme-tactile (0.1.1)
+      jekyll (~> 3.5)
+      jekyll-seo-tag (~> 2.0)
+    jekyll-theme-time-machine (0.1.1)
+      jekyll (~> 3.5)
+      jekyll-seo-tag (~> 2.0)
+    jekyll-titles-from-headings (0.5.3)
+      jekyll (>= 3.3, < 5.0)
+    jekyll-watch (2.2.1)
+      listen (~> 3.0)
+    jemoji (0.12.0)
+      gemoji (~> 3.0)
+      html-pipeline (~> 2.2)
+      jekyll (>= 3.0, < 5.0)
+    just-the-docs (0.3.3)
+      jekyll (>= 3.8.5)
+      jekyll-seo-tag (~> 2.0)
+      rake (>= 12.3.1, < 13.1.0)
+    kramdown (2.3.1)
+      rexml
+    kramdown-parser-gfm (1.1.0)
+      kramdown (~> 2.0)
+    liquid (4.0.3)
+    listen (3.5.1)
+      rb-fsevent (~> 0.10, >= 0.10.3)
+      rb-inotify (~> 0.9, >= 0.9.10)
+    mercenary (0.3.6)
+    mini_portile2 (2.5.1)
+    minima (2.5.1)
+      jekyll (>= 3.5, < 5.0)
+      jekyll-feed (~> 0.9)
+      jekyll-seo-tag (~> 2.1)
+    minitest (5.14.4)
+    multipart-post (2.1.1)
+    nokogiri (1.11.3)
+      mini_portile2 (~> 2.5.0)
+      racc (~> 1.4)
+    octokit (4.21.0)
+      faraday (>= 0.9)
+      sawyer (~> 0.8.0, >= 0.5.3)
+    pathutil (0.16.2)
+      forwardable-extended (~> 2.6)
+    public_suffix (4.0.6)
+    racc (1.5.2)
+    rake (13.0.3)
+    rb-fsevent (0.10.4)
+    rb-inotify (0.10.1)
+      ffi (~> 1.0)
+    rexml (3.2.5)
+    rouge (3.26.0)
+    ruby-enum (0.9.0)
+      i18n
+    ruby2_keywords (0.0.4)
+    rubyzip (2.3.0)
+    safe_yaml (1.0.5)
+    sass (3.7.4)
+      sass-listen (~> 4.0.0)
+    sass-listen (4.0.0)
+      rb-fsevent (~> 0.9, >= 0.9.4)
+      rb-inotify (~> 0.9, >= 0.9.7)
+    sawyer (0.8.2)
+      addressable (>= 2.3.5)
+      faraday (> 0.8, < 2.0)
+    simpleidn (0.2.1)
+      unf (~> 0.1.4)
+    terminal-table (1.8.0)
+      unicode-display_width (~> 1.1, >= 1.1.1)
+    thread_safe (0.3.6)
+    typhoeus (1.4.0)
+      ethon (>= 0.9.0)
+    tzinfo (1.2.9)
+      thread_safe (~> 0.1)
+    unf (0.1.4)
+      unf_ext
+    unf_ext (0.0.7.7)
+    unicode-display_width (1.7.0)
+    webrick (1.7.0)
+    zeitwerk (2.4.2)
+
+PLATFORMS
+  ruby
+
+DEPENDENCIES
+  github-pages
+  jekyll-remote-theme
+  just-the-docs
+  minima (~> 2.5)
+  tzinfo (~> 1.2)
+  tzinfo-data
+  wdm (~> 0.1.1)
+  webrick (~> 1.7)
+
+BUNDLED WITH
+   2.2.26

docs/_config.yml

@@ -0,0 +1,21 @@
+title: cmkr
+
+plugins:
+  - jekyll-remote-theme
+
+# Automatically deduce dark theme preference https://github.com/pmarsceill/just-the-docs/pull/464
+remote_theme: build-cpp/just-the-docs@light-switch
+search_enabled: true
+color_scheme: light-or-dark
+heading_anchors: true
+aux_links:
+  "cmkr":
+    - "https://github.com/build-cpp/cmkr"
+aux_links_new_tab: true
+
+gh_edit_link: true
+gh_edit_link_text: "Edit this page on GitHub."
+gh_edit_repository: "https://github.com/build-cpp/cmkr"
+gh_edit_branch: "main"
+gh_edit_view_mode: "edit"
+gh_edit_source: docs

docs/cmake-toml.md

@@ -0,0 +1,195 @@
+---
+layout: page
+title: cmake.toml
+permalink: /cmake-toml/
+nav_order: 3
+---
+
+# cmake.toml
+
+This page is supposed to be a reference for the options in the `cmake.toml` file. If you think anything is missing or unclear, please [edit this page](https://github.com/build-cpp/cmkr/edit/main/docs/cmake-toml.md) or open an [issue](https://github.com/build-cpp/cmkr/issues).
+
+See the [examples](/examples) section for more real-world examples.
+
+## CMake configuration
+
+```toml
+[cmake]
+version = "3.15"
+cmkr-include = "cmkr.cmake"
+```
+
+## Project configuration
+
+```toml
+[project]
+name = "myproject"
+version = "1.0.0"
+description = "Description of the project"
+languages = ["C", "CXX"]
+cmake-before = """
+message(STATUS "CMake injected before the project() call")
+"""
+cmake-after = """
+message(STATUS "CMake injected after the project() call")
+"""
+include-before = ["cmake/before-project.cmake"]
+include-after = ["cmake/after-project.cmake"]
+```
+
+## Conditions
+
+You can specify your own conditions and use them in any `condition` field:
+
+```toml
+[conditions]
+arch64 = "CMAKE_SIZEOF_VOID_P EQUALS 8"
+arch32 = "CMAKE_SIZEOF_VOID_P EQUALS 4"
+```
+
+You can also prefix most keys with `condition.` to represent a conditional:
+
+```toml
+[target]
+type = "executable"
+sources = ["src/main.cpp"]
+windows.sources = ["src/windows_specific.cpp"]
+```
+
+This will make the `arch64` and `arch32` conditions available with their respective CMake expressions. The following conditions are predefined (you can override them if you desire):
+
+```toml
+[conditions]
+windows = "WIN32"
+macos = "CMAKE_SYSTEM_NAME MATCHES \"Darwin\""
+unix = "UNIX"
+bsd = "CMAKE_SYSTEM_NAME MATCHES \"BSD\""
+linux = "CMAKE_SYSTEM_NAME MATCHES \"Linux\""
+gcc = "CMAKE_CXX_COMPILER_ID STREQUAL \"GNU\" OR CMAKE_C_COMPILER_ID STREQUAL \"GNU\""
+clang = "CMAKE_CXX_COMPILER_ID MATCHES \"Clang\" OR CMAKE_C_COMPILER_ID MATCHES \"Clang\""
+msvc = "MSVC"
+```
+
+## Subdirectories
+
+```toml
+[subdir.mysubdir]
+condition = "linux"
+cmake-before = """
+message(STATUS "CMake injected before the add_subdirectory() call"
+"""
+cmake-after = """
+message(STATUS "CMake injected after the add_subdirectory() call")
+"""
+include-before = ["cmake/before-subdir.cmake"]
+include-after = ["cmake/after-subdir.cmake"]
+```
+
+## Vcpkg
+
+```toml
+[vcpkg]
+version = "2021.05.12"
+url = "https://github.com/microsoft/vcpkg/archive/refs/tags/2021.05.12.tar.gz"
+packages = ["fmt", "zlib"]
+```
+
+The vcpkg `version` will automatically generate the `url` from the [official repository](https://github.com/microsoft/vcpkg/releases). For a custom registry you can specify your own `url` (and omit the `version`). You can browse available packages on [vcpkg.io](https://vcpkg.io/en/packages.html).
+
+## Packages
+
+```toml
+[find-package]
+mypackage = { version = "1.0", required = true, config = true, components = ["mycomponent"] }
+
+# Alternative syntax
+[find-package.mypackage]
+version = "1.0"
+required = true
+config = true
+components = ["mycomponent"]
+```
+
+## FetchContent
+
+**Note**: The `[fetch-content]` feature is unpolished and will likely change in a future release.
+
+```toml
+[fetch-content]
+gitcontent = { git = "https://github.com/myuser/gitcontent", tag = "v0.1" }
+svncontent = { svn = "https://svn-host.com/url", rev = "svn_rev" }
+urlcontent = { url = "https://content-host.com/urlcontent.zip", hash = "123123123123" }
+
+# Alternative syntax
+[fetch-content.gitcontent]
+git = "https://github.com/myuser/gitcontent"
+tag = "v0.1"
+```
+
+## Targets
+
+```toml
+[target.mytarget]
+condition = "linux"
+alias = "mytarget::mytarget"
+type = "static" # executable, library, shared, static, interface, custom
+headers = ["src/mytarget.h"]
+sources = ["src/mytarget.cpp"]
+
+# The keys below match the target_xxx CMake commands
+# Keys prefixed with private- will get PRIVATE visibility
+compile-definitions = [""]
+private-compile-definitions = [""]
+compile-features = [""]
+private-compile-features = [""]
+compile-options = [""]
+private-compile-options = [""]
+include-directories = [""]
+private-include-directories = [""]
+link-directories = [""]
+private-link-directories = [""]
+link-libraries = [""]
+private-link-libraries = [""]
+link-options = [""]
+private-link-options = [""]
+precompile-headers = [""]
+private-precompile-headers = [""]
+
+cmake-before = """
+message(STATUS "CMake injected before the target")
+"""
+cmake-after = """
+message(STATUS "CMake injected after the target")
+"""
+include-before = "cmake/target-before.cmake"
+include-after = "cmake/target-after.cmake"
+
+# See https://cmake.org/cmake/help/latest/manual/cmake-properties.7.html#properties-on-targets for a list of target properties
+[target.mytarget.properties]
+CXX_STANDARD = 17
+CXX_STANDARD_REQUIRED = true
+FOLDER = "MyFolder"
+```
+
+## Tests and installation (unfinished)
+
+**Note**: The `[[test]]` and `[[install]]` are unfinished features and will likely change in a future release.
+
+```toml
+# You can declare as many as you want like this, but the name has to be unique
+[[test]]
+name = "mytest"
+command = "$<TARGET_FILE:mytest>"
+arguments = ["arg1", "arg2"]
+configurations = ["Debug", "Release", "RelWithDebInfo", "MinSizeRelease"]
+working-directory = "mytest-dir"
+```
+
+```toml
+[[install]]
+targets = ["mytarget", "mytest"]
+destination = ["bin"]
+files = ["content/my.png"]
+dirs = [""]
+configs = [""]
+```

docs/command-line.md

@@ -0,0 +1,22 @@
+---
+layout: page
+title: Command line
+permalink: /command-line/
+nav_order: 2
+---
+
+# Command line
+
+Optionally you can install `cmkr` in your `PATH` and use it as a utility from the command line:
+
+```
+Usage: cmkr [arguments]
+arguments:
+    init    [executable|library|shared|static|interface] Starts a new project in the same directory.
+    gen                                                  Generates CMakeLists.txt file.
+    build   <extra cmake args>                           Run cmake and build.
+    install                                              Run cmake --install. Needs admin privileges.
+    clean                                                Clean the build directory.
+    help                                                 Show help.
+    version                                              Current cmkr version.
+```

docs/examples/basic.md

@@ -0,0 +1,26 @@
+---
+# Automatically generated from tests/basic/cmake.toml - DO NOT EDIT
+layout: default
+title: Minimal example
+permalink: /examples/basic
+parent: Examples
+nav_order: 0
+---
+
+# Minimal example
+
+A minimal `cmake.toml` project:
+
+```toml
+[project]
+name = "basic"
+description = "Minimal example"
+
+[target.basic]
+type = "executable"
+sources = ["src/basic.cpp"]
+```
+
+Declares an executable target called `basic` with `src/basic.cpp` as a source file. Equivalent to CMake's [add_executable](https://cmake.org/cmake/help/latest/command/add_executable.html)`(basic src/basic.cpp)`.
+
+<sup><sub>This page was automatically generated from [tests/basic/cmake.toml](https://github.com/build-cpp/cmkr/tree/main/tests/basic/cmake.toml).</sub></sup>

docs/examples/cxx-standard.md

@@ -0,0 +1,27 @@
+---
+# Automatically generated from tests/cxx-standard/cmake.toml - DO NOT EDIT
+layout: default
+title: Changing C++ standard
+permalink: /examples/cxx-standard
+parent: Examples
+nav_order: 5
+---
+
+# Changing C++ standard
+
+Require a C++11 compiler for the target `example`.
+
+```toml
+[project]
+name = "cxx-standard"
+description = "Changing C++ standard"
+
+[target.example]
+type = "executable"
+sources = ["src/main.cpp"]
+compile-features = ["cxx_std_11"]
+```
+
+This is equivalent to CMake's [target_compile_features](https://cmake.org/cmake/help/latest/command/target_compile_features.html)`(example PRIVATE cxx_std_11)`. For more information on available C/C++ standards and features see [cmake-compile-features(7)](https://cmake.org/cmake/help/latest/manual/cmake-compile-features.7.html).
+
+<sup><sub>This page was automatically generated from [tests/cxx-standard/cmake.toml](https://github.com/build-cpp/cmkr/tree/main/tests/cxx-standard/cmake.toml).</sub></sup>

docs/examples/fetch-content.md

@@ -0,0 +1,30 @@
+---
+# Automatically generated from tests/fetch-content/cmake.toml - DO NOT EDIT
+layout: default
+title: Fetching from git
+permalink: /examples/fetch-content
+parent: Examples
+nav_order: 2
+---
+
+# Fetching from git
+
+Downloads [fmt v7.1.3](https://fmt.dev/7.1.3/) from [GitHub](https://github.com) and links an `example` target to it:
+
+```toml
+[project]
+name = "fetch-content"
+description = "Fetching from git"
+
+[fetch-content]
+fmt = { git = "https://github.com/fmtlib/fmt", tag = "7.1.3" }
+
+[target.example]
+type = "executable"
+sources = ["src/main.cpp"]
+link-libraries = ["fmt::fmt"]
+```
+
+This is equivalent to calling CMake's [FetchContent](https://cmake.org/cmake/help/latest/module/FetchContent.html).
+
+<sup><sub>This page was automatically generated from [tests/fetch-content/cmake.toml](https://github.com/build-cpp/cmkr/tree/main/tests/fetch-content/cmake.toml).</sub></sup>

docs/examples/globbing.md

@@ -0,0 +1,35 @@
+---
+# Automatically generated from tests/globbing/cmake.toml - DO NOT EDIT
+layout: default
+title: Globbing sources
+permalink: /examples/globbing
+parent: Examples
+nav_order: 6
+---
+
+# Globbing sources
+
+
+
+```toml
+[project]
+name = "globbing"
+description = "Globbing sources"
+
+# Recursively glob in the mylib/ folder
+[target.mylib]
+type = "static"
+alias = "mylib::mylib"
+sources = ["mylib/**.hpp", "mylib/**.cpp"]
+include-directories = ["mylib/include"]
+
+# Single-folder glob in example/src/
+[target.example]
+type = "executable"
+sources = ["example/src/*.cpp"]
+link-libraries = ["mylib::mylib"]
+```
+
+As you can see in the example above you can use `**.ext` to glob recursively and `*.ext` to glob non-recursively. This **does not** generate `file(GLOB ...)` commands, but instead globs when cmkr is run. Files are sorted to give deterministic results regardless of the platform used.
+
+<sup><sub>This page was automatically generated from [tests/globbing/cmake.toml](https://github.com/build-cpp/cmkr/tree/main/tests/globbing/cmake.toml).</sub></sup>

docs/examples/index.md

@@ -0,0 +1,11 @@
+---
+layout: default
+title: Examples
+permalink: /examples/
+nav_order: 100
+has_children: true
+---
+
+# Examples
+
+The examples in this section are automatically generated from the [tests](https://github.com/build-cpp/cmkr/blob/main/tests/cmake.toml).

docs/examples/interface.md

@@ -0,0 +1,31 @@
+---
+# Automatically generated from tests/interface/cmake.toml - DO NOT EDIT
+layout: default
+title: Header-only library
+permalink: /examples/interface
+parent: Examples
+nav_order: 1
+---
+
+# Header-only library
+
+
+
+```toml
+[project]
+name = "interface"
+description = "Header-only library"
+
+[target.mylib]
+type = "interface"
+include-directories = ["include"]
+
+[target.example]
+type = "executable"
+sources = ["src/main.cpp"]
+link-libraries = ["mylib"]
+```
+
+
+
+<sup><sub>This page was automatically generated from [tests/interface/cmake.toml](https://github.com/build-cpp/cmkr/tree/main/tests/interface/cmake.toml).</sub></sup>

docs/examples/vcpkg.md

@@ -0,0 +1,36 @@
+---
+# Automatically generated from tests/vcpkg/cmake.toml - DO NOT EDIT
+layout: default
+title: Dependencies from vcpkg
+permalink: /examples/vcpkg
+parent: Examples
+nav_order: 4
+---
+
+# Dependencies from vcpkg
+
+Downloads [fmt v7.1.3](https://fmt.dev/7.1.3/) using [vcpkg](https://vcpkg.io/) and links an `example` target to it:
+
+```toml
+[project]
+name = "vcpkg"
+description = "Dependencies from vcpkg"
+
+# See https://github.com/microsoft/vcpkg/releases for vcpkg versions
+# See https://vcpkg.io/en/packages.html for available packages
+[vcpkg]
+version = "2021.05.12"
+packages = ["fmt"]
+
+[find-package]
+fmt = {}
+
+[target.example]
+type = "executable"
+sources = ["src/main.cpp"]
+link-libraries = ["fmt::fmt"]
+```
+
+The bootstrapping of vcpkg is fully automated and no user interaction is necessary. You can disable vcpkg by setting `CMKR_DISABLE_VCPKG=ON`.
+
+<sup><sub>This page was automatically generated from [tests/vcpkg/cmake.toml](https://github.com/build-cpp/cmkr/tree/main/tests/vcpkg/cmake.toml).</sub></sup>

docs/getting-started.md

@@ -0,0 +1,17 @@
+---
+layout: page
+title: Getting started
+permalink: /getting-started/
+nav_order: 1
+---
+
+# Getting started
+
+The easiest way to get started is to use the [cmkr_for_beginners](https://github.com/build-cpp/cmkr_for_beginners) template repository. Either open it in [Gitpod](https://gitpod.io/#https://github.com/build-cpp/cmkr_for_beginners), or clone the repository and run:
+
+```sh
+cmake -B build
+cmake --build build
+```
+
+Alternatively you can check out the [cmkr topic](https://github.com/topics/cmkr) or the [build-cpp organization](https://github.com/build-cpp) for more examples and templates.

docs/google13f7c659b54c069f.html

@@ -0,0 +1 @@
+google-site-verification: google13f7c659b54c069f.html

docs/hammer-svgrepo-com.svg

@@ -0,0 +1,46 @@
+<?xml version="1.0" encoding="iso-8859-1"?>
+<!-- Generator: Adobe Illustrator 19.0.0, SVG Export Plug-In . SVG Version: 6.00 Build 0)  -->
+<svg version="1.1" id="Layer_1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px"
+	 viewBox="0 0 508 508" style="enable-background:new 0 0 508 508;" xml:space="preserve">
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+<g>
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+	<path style="fill:#324A5E;" d="M144,228l-18,17.2c-4.8,4.8-12.4,4.4-17.2-0.4l-29.2-30c-4.8-4.8-4.4-12.4,0.4-17.2l18-17.2
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+</g>
+<path style="fill:#FFFFFF;" d="M249.6,240.8l7.2-6.8c5.2-4.8,13.6-4,20,1.6L402,353.2c6.8,6.4,7.6,16,2.4,21.2l-19.6,18.8
+	c-5.6,5.2-15.2,4-21.2-3.2L250.4,260.8C244.8,254.4,244.4,245.6,249.6,240.8z"/>
+<g>
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docs/index.md

@@ -0,0 +1,23 @@
+---
+layout: home
+title: Index
+nav_order: 0
+---
+
+# Index
+
+`cmkr`, pronounced "cmaker", is a modern build system based on [CMake](https://cmake.org/) and [TOML](https://toml.io). It was originally created by [Mohammed Alyousef](https://github.com/MoAlyousef).
+
+`cmkr` parses `cmake.toml` files and generates a modern, idiomatic `CMakeLists.txt` for you. A minimal example:
+
+```toml
+[project]
+name = "cmkr_for_beginners"
+description = "A minimal cmkr project."
+
+[target.hello_world]
+type = "executable"
+sources = ["src/main.cpp"]
+```
+
+`cmkr` can bootstrap itself from CMake and consumers of your project do not need to install anything to work with it.

docs/run-locally.sh

@@ -0,0 +1,2 @@
+bundle exec just-the-docs rake search:init
+bundle exec jekyll serve --livereload

docs/run-wsl.sh

@@ -0,0 +1,2 @@
+bundle install
+bundle exec jekyll serve --force_polling --livereload --incremental

include/arguments.hpp

@@ -1,16 +1,11 @@
 #pragma once
 
-#ifdef __cplusplus
-namespace cmkr::args {
+namespace cmkr {
+namespace args {
 
 const char *handle_args(int argc, char **argv);
-}
 
-extern "C" {
-#endif
+} // namespace args
+} // namespace cmkr
 
 const char *cmkr_args_handle_args(int, char **);
-
-#ifdef __cplusplus
-}
-#endif

include/build.h

@@ -1,25 +0,0 @@
-#pragma once
-
-#ifdef __cplusplus
-
-namespace cmkr::build {
-
-int run(int argc, char **argv);
-
-int clean();
-
-int install();
-
-} // namespace cmkr::build
-extern "C" {
-#endif
-
-int cmkr_build_run(int argc, char **argv);
-
-int cmkr_build_clean(void);
-
-int cmkr_build_install(void);
-
-#ifdef __cplusplus
-}
-#endif

include/build.hpp

@@ -0,0 +1,19 @@
+#pragma once
+
+namespace cmkr {
+namespace build {
+
+int run(int argc, char **argv);
+
+int clean();
+
+int install();
+
+} // namespace build
+} // namespace cmkr
+
+int cmkr_build_run(int argc, char **argv);
+
+int cmkr_build_clean();
+
+int cmkr_build_install();

include/cmake_generator.hpp

@@ -0,0 +1,13 @@
+#pragma once
+
+#include "project_parser.hpp"
+
+namespace cmkr {
+namespace gen {
+
+void generate_project(const std::string &type);
+
+void generate_cmake(const char *path, const parser::Project *parent_project = nullptr);
+
+} // namespace gen
+} // namespace cmkr

include/enum_helper.hpp

@@ -0,0 +1,69 @@
+// https://codereview.stackexchange.com/a/14315
+
+#include <algorithm>
+#include <iostream>
+#include <sstream>
+#include <string>
+
+// This is the type that will hold all the strings.
+// Each enumeration type will declare its own specialization.
+// Any enum that does not have a specialization will generate a compiler error
+// indicating that there is no definition of this variable (as there should be
+// be no definition of a generic version).
+template <typename T>
+struct enumStrings {
+    static char const *data[];
+};
+
+// This is a utility type.
+// Created automatically. Should not be used directly.
+template <typename T>
+struct enumRefHolder {
+    T &enumVal;
+    enumRefHolder(T &enumVal) : enumVal(enumVal) {}
+};
+template <typename T>
+struct enumConstRefHolder {
+    T const &enumVal;
+    enumConstRefHolder(T const &enumVal) : enumVal(enumVal) {}
+};
+
+// The next two functions do the actual work of reading/writing an
+// enum as a string.
+template <typename T>
+std::ostream &operator<<(std::ostream &str, enumConstRefHolder<T> const &data) {
+    return str << enumStrings<T>::data[data.enumVal];
+}
+
+template <typename T>
+std::istream &operator>>(std::istream &str, enumRefHolder<T> const &data) {
+    std::string value;
+    str >> value;
+
+    // These two can be made easier to read in C++11
+    // using std::begin() and std::end()
+    //
+    static auto begin = std::begin(enumStrings<T>::data);
+    static auto end = std::end(enumStrings<T>::data);
+
+    auto find = std::find(begin, end, value);
+    if (find != end) {
+        data.enumVal = static_cast<T>(std::distance(begin, find));
+    } else {
+        throw std::invalid_argument("");
+    }
+    return str;
+}
+
+// This is the public interface:
+// use the ability of function to deduce their template type without
+// being explicitly told to create the correct type of enumRefHolder<T>
+template <typename T>
+enumConstRefHolder<T> enumToString(T const &e) {
+    return enumConstRefHolder<T>(e);
+}
+
+template <typename T>
+enumRefHolder<T> enumFromString(T &e) {
+    return enumRefHolder<T>(e);
+}

include/error.hpp

@@ -1,7 +1,7 @@
 #pragma once
 
-#ifdef __cplusplus
-namespace cmkr::error {
+namespace cmkr {
+namespace error {
 
 struct Status {
     enum class Code {
@@ -21,13 +21,7 @@ struct Status {
     Code ec_ = Code::Success;
 };
 
-} // namespace cmkr::error
-
-extern "C" {
-#endif
+} // namespace error
+} // namespace cmkr
 
 const char *cmkr_error_status_string(int);
-
-#ifdef __cplusplus
-}
-#endif

include/fs.hpp

@@ -0,0 +1,15 @@
+#pragma once
+
+#if ((defined(_MSVC_LANG) && _MSVC_LANG >= 201703L) ||                                             \
+     (defined(__cplusplus) && __cplusplus >= 201703L)) &&                                          \
+    defined(__has_include)
+#if __has_include(<filesystem>) && (!defined(__MAC_OS_X_VERSION_MIN_REQUIRED) || __MAC_OS_X_VERSION_MIN_REQUIRED >= 101500)
+#define GHC_USE_STD_FS
+#include <filesystem>
+namespace fs = std::filesystem;
+#endif
+#endif
+#ifndef GHC_USE_STD_FS
+#include <ghc/filesystem.hpp>
+namespace fs = ghc::filesystem;
+#endif

include/gen.h

@@ -1,21 +0,0 @@
-#pragma once
-
-#ifdef __cplusplus
-namespace cmkr::gen {
-
-int generate_project(const char *typ);
-
-int generate_cmake(const char *path);
-
-} // namespace cmkr::gen
-
-extern "C" {
-#endif
-
-int cmkr_gen_generate_project(const char *typ);
-
-int cmkr_gen_generate_cmake(const char *path);
-
-#ifdef __cplusplus
-}
-#endif

include/help.hpp

@@ -1,21 +1,15 @@
 #pragma once
 
-#ifdef __cplusplus
-namespace cmkr::help {
+namespace cmkr {
+namespace help {
 
 const char *version() noexcept;
 
 const char *message() noexcept;
 
-} // namespace cmkr::help
-
-extern "C" {
-#endif
+} // namespace help
+} // namespace cmkr
 
 const char *cmkr_help_version(void);
 
 const char *cmkr_help_message(void);
-
-#ifdef __cplusplus
-}
-#endif

include/literals.h

@@ -1,48 +0,0 @@
-#pragma once
-
-const char *hello_world = R"lit(
-#include <iostream>
-
-int %s() {
-    std::cout << "Hello World!\n";
-    return 0;
-}
-
-)lit";
-
-const char *cmake_toml = R"lit(
-[cmake]
-minimum = "3.15"
-# subdirs = []
-# bin-dir = ""
-# cpp-flags = []
-# c-flags = []
-# link-flags = []
-# generator = ""
-# arguments = []
-
-[project]
-name = "%s"
-version = "0.1.0"
-
-# [find-package]
-
-# [fetch-content]
-
-# [options]
-
-[[bin]]
-name = "%s"
-type = "%s"
-sources = ["src/*.cpp"]
-include-dirs = ["include"]
-# alias = ""
-# features = []
-# defines = []
-# link-libs = []
-
-[[install]]
-%s = ["%s"]
-destination = "${CMAKE_INSTALL_PREFIX}/%s"
-
-)lit";

include/literals.hpp

@@ -0,0 +1,100 @@
+#pragma once
+
+static const char *cpp_executable = &R"lit(
+#include <iostream>
+#include <cstdlib>
+
+int main() {
+    std::cout << "Hello from cmkr!\n";
+    return EXIT_SUCCESS;
+}
+)lit"[1]; // skip initial newline
+
+static const char *cpp_library = &R"lit(
+#include <@name/@name.hpp>
+
+#include <iostream>
+
+namespace @name {
+
+void hello() {
+    std::cout << "Hello from cmkr!\n";
+}
+
+} // namespace @name
+)lit"[1]; // skip initial newline
+
+static const char *hpp_library = &R"lit(
+#pragma once
+
+namespace @name {
+
+void hello();
+
+} // namespace @name
+)lit"[1]; // skip initial newline
+
+static const char *hpp_interface = &R"lit(
+#pragma once
+
+#include <iostream>
+
+namespace @name {
+
+inline void hello() {
+    std::cout << "Hello from cmkr!\n";
+}
+
+} // namespace @name
+)lit"[1]; // skip initial newline
+
+static const char *toml_executable = &R"lit(
+# Reference: https://build-cpp.github.io/cmkr/cmake-toml
+[project]
+name = "@name"
+
+[target.@name]
+type = "executable"
+sources = ["src/@name/main.cpp"]
+compile-features = ["cxx_std_11"]
+)lit"[1]; // skip initial newline
+
+static const char *toml_library = &R"lit(
+# Reference: https://build-cpp.github.io/cmkr/cmake-toml
+[project]
+name = "@name"
+
+[target.@name]
+type = "@type"
+sources = [
+    "src/@name/@name.cpp",
+    "include/@name/@name.hpp"
+]
+include-directories = ["include"]
+compile-features = ["cxx_std_11"]
+)lit"[1]; // skip initial newline
+
+static const char *toml_interface = &R"lit(
+# Reference: https://build-cpp.github.io/cmkr/cmake-toml
+[project]
+name = "@name"
+
+[target.@name]
+type = "interface"
+include-directories = ["include"]
+compile-features = ["cxx_std_11"]
+)lit"[1]; // skip initial newline
+
+static const char *toml_migration = &R"lit(
+# Reference: https://build-cpp.github.io/cmkr/cmake-toml
+[project]
+name = "@name"
+
+# TODO: define a target for each of your executables/libraries like this:
+#[target.@name]
+#type = "executable"
+#sources = ["src/@name/*.cpp", "include/@name/*.hpp"]
+#include-directories = ["include"]
+#compile-features = ["cxx_std_11"]
+#link-libraries = ["other-targets"]
+)lit"[1]; // skip initial newline

include/project_parser.hpp

@@ -0,0 +1,165 @@
+#pragma once
+
+#include <mpark/variant.hpp>
+#include <string>
+#include <tsl/ordered_map.h>
+#include <vector>
+
+namespace cmkr {
+namespace parser {
+
+struct Setting {
+    std::string name;
+    std::string comment;
+    mpark::variant<bool, std::string> val;
+    bool cache = false;
+    bool force = false;
+};
+
+struct Option {
+    std::string name;
+    std::string comment;
+    bool val = false;
+};
+
+struct Package {
+    std::string name;
+    std::string version;
+    bool required = true;
+    bool config = false;
+    std::vector<std::string> components;
+};
+
+struct Vcpkg {
+    std::string version;
+    std::string url;
+    std::vector<std::string> packages;
+};
+
+enum TargetType {
+    target_executable,
+    target_library,
+    target_shared,
+    target_static,
+    target_interface,
+    target_custom,
+    target_object,
+};
+
+template <typename T>
+using Condition = tsl::ordered_map<std::string, T>;
+
+using ConditionVector = Condition<std::vector<std::string>>;
+
+struct Target {
+    std::string name;
+    TargetType type = {};
+
+    ConditionVector headers;
+    ConditionVector sources;
+
+    // https://cmake.org/cmake/help/latest/manual/cmake-commands.7.html#project-commands
+    ConditionVector compile_definitions;
+    ConditionVector private_compile_definitions;
+
+    ConditionVector compile_features;
+    ConditionVector private_compile_features;
+
+    ConditionVector compile_options;
+    ConditionVector private_compile_options;
+
+    ConditionVector include_directories;
+    ConditionVector private_include_directories;
+
+    ConditionVector link_directories;
+    ConditionVector private_link_directories;
+
+    ConditionVector link_libraries;
+    ConditionVector private_link_libraries;
+
+    ConditionVector link_options;
+    ConditionVector private_link_options;
+
+    ConditionVector precompile_headers;
+    ConditionVector private_precompile_headers;
+
+    std::string condition;
+    std::string alias;
+    Condition<tsl::ordered_map<std::string, std::string>> properties;
+
+    Condition<std::string> cmake_before;
+    Condition<std::string> cmake_after;
+    ConditionVector include_before;
+    ConditionVector include_after;
+};
+
+struct Test {
+    std::string name;
+    std::vector<std::string> configurations;
+    std::string working_directory;
+    std::string command;
+    std::vector<std::string> arguments;
+};
+
+struct Install {
+    std::vector<std::string> targets;
+    std::vector<std::string> files;
+    std::vector<std::string> dirs;
+    std::vector<std::string> configs;
+    std::string destination;
+};
+
+struct Subdir {
+    std::string name;
+    std::string condition;
+    Condition<std::string> cmake_before;
+    Condition<std::string> cmake_after;
+    ConditionVector include_before;
+    ConditionVector include_after;
+};
+
+struct Content {
+    std::string name;
+    tsl::ordered_map<std::string, std::string> arguments;
+};
+
+struct Project {
+    // This is the CMake version required to use all cmkr versions.
+    std::string cmake_version = "3.15";
+    std::string cmkr_include = "cmkr.cmake";
+    std::string build_dir = "build";
+    std::string generator;
+    std::string config;
+    bool allow_in_tree = false;
+    Condition<std::vector<std::string>> project_subdirs;
+    std::vector<std::string> cppflags;
+    std::vector<std::string> cflags;
+    std::vector<std::string> linkflags;
+    std::vector<std::string> gen_args;
+    std::vector<std::string> build_args;
+    std::string project_name;
+    std::string project_version;
+    std::string project_description;
+    std::vector<std::string> project_languages;
+    Condition<std::string> cmake_before;
+    Condition<std::string> cmake_after;
+    ConditionVector include_before;
+    ConditionVector include_after;
+    std::vector<Setting> settings;
+    std::vector<Option> options;
+    std::vector<Package> packages;
+    Vcpkg vcpkg;
+    std::vector<Content> contents;
+    std::vector<Target> targets;
+    std::vector<Test> tests;
+    std::vector<Install> installs;
+    tsl::ordered_map<std::string, std::string> conditions;
+    std::vector<Subdir> subdirs;
+
+    Project(const Project *parent, const std::string &path, bool build);
+};
+
+bool is_root_path(const std::string &path);
+
+} // namespace parser
+} // namespace cmkr

src/arguments.cpp

@@ -1,45 +1,44 @@
-#include "args.h"
-#include "build.h"
-#include "gen.h"
-#include "help.h"
+#include "arguments.hpp"
+#include "build.hpp"
+#include "cmake_generator.hpp"
+#include "help.hpp"
 
+#include "fs.hpp"
 #include <exception>
-#include <filesystem>
+#include <iostream>
 #include <stdexcept>
 #include <string>
 #include <vector>
 
-namespace cmkr::args {
+namespace cmkr {
+namespace args {
 const char *handle_args(int argc, char **argv) {
     std::vector<std::string> args;
     for (int i = 0; i < argc; ++i)
         args.push_back(argv[i]);
 
     if (args.size() < 2)
-        return "Please provide command line arguments!";
+        throw std::runtime_error(cmkr::help::message());
     std::string main_arg = args[1];
     if (main_arg == "gen") {
-        auto ret = cmkr::gen::generate_cmake(std::filesystem::current_path().string().c_str());
-        if (ret)
-            return "CMake generation error!";
+        cmkr::gen::generate_cmake(fs::current_path().string().c_str());
         return "CMake generation successful!";
     } else if (main_arg == "help") {
         return cmkr::help::message();
     } else if (main_arg == "version") {
         return cmkr::help::version();
     } else if (main_arg == "init") {
-        std::string typ = "exe";
+        std::string type = "executable";
         if (args.size() > 2)
-            typ = args[2];
-        auto ret = cmkr::gen::generate_project(typ.c_str());
-        if (ret)
-            return "Initialization failure!";
+            type = args[2];
+        cmkr::gen::generate_project(type.c_str());
+        cmkr::gen::generate_cmake(fs::current_path().string().c_str());
         return "Directory initialized!";
     } else if (main_arg == "build") {
         auto ret = build::run(argc, argv);
         if (ret)
             return "CMake build error!";
-        return "CMake run completed!";
+        return "CMake build completed!";
     } else if (main_arg == "install") {
         auto ret = build::install();
         if (ret)
@@ -51,10 +50,11 @@ const char *handle_args(int argc, char **argv) {
             return "CMake clean error!";
         return "Cleaned build directory!";
     } else {
-        return "Unknown argument!";
+        throw std::runtime_error(cmkr::help::message());
     }
 }
-} // namespace cmkr::args
+} // namespace args
+} // namespace cmkr
 
 const char *cmkr_args_handle_args(int argc, char **argv) {
     try {

src/build.cpp

@@ -1,48 +1,45 @@
-#include "build.h"
-#include "cmake.hpp"
-#include "error.h"
-#include "gen.h"
+#include "build.hpp"
+#include "cmake_generator.hpp"
+#include "error.hpp"
+#include "project_parser.hpp"
 
-#include <filesystem>
+#include "fs.hpp"
+#include <cstddef>
+#include <cstdlib>
 #include <sstream>
-#include <stddef.h>
 #include <stdexcept>
-#include <stdlib.h>
 #include <system_error>
 
-namespace fs = std::filesystem;
-
-namespace cmkr::build {
+namespace cmkr {
+namespace build {
 
 int run(int argc, char **argv) {
-    cmake::CMake cmake(".", true);
+    parser::Project project(nullptr, ".", true);
     if (argc > 2) {
-        for (size_t i = 2; i < argc; ++i) {
-            cmake.build_args.push_back(argv[i]);
+        for (int i = 2; i < argc; ++i) {
+            project.build_args.push_back(argv[i]);
         }
     }
     std::stringstream ss;
 
-    if (!fs::exists("CMakeLists.txt"))
-        if (gen::generate_cmake("."))
-            throw std::runtime_error("CMake generation failure!");
+    gen::generate_cmake(fs::current_path().string().c_str());
 
-    ss << "cmake -S. -B" << cmake.bin_dir << " ";
+    ss << "cmake -DCMKR_BUILD_SKIP_GENERATION=ON -B" << project.build_dir << " ";
 
-    if (!cmake.generator.empty()) {
-        ss << "-G \"" << cmake.generator << "\" ";
+    if (!project.generator.empty()) {
+        ss << "-G \"" << project.generator << "\" ";
     }
-    if (!cmake.config.empty()) {
-        ss << "-DCMAKE_BUILD_TYPE=" << cmake.config << " ";
+    if (!project.config.empty()) {
+        ss << "-DCMAKE_BUILD_TYPE=" << project.config << " ";
     }
-    if (!cmake.gen_args.empty()) {
-        for (const auto &arg : cmake.gen_args) {
+    if (!project.gen_args.empty()) {
+        for (const auto &arg : project.gen_args) {
             ss << "-D" << arg << " ";
         }
     }
-    ss << "&& cmake --build " << cmake.bin_dir << " --parallel";
+    ss << "&& cmake --build " << project.build_dir << " --parallel";
     if (argc > 2) {
-        for (const auto &arg : cmake.build_args) {
+        for (const auto &arg : project.build_args) {
             ss << " " << arg;
         }
     }
@@ -52,21 +49,21 @@ int run(int argc, char **argv) {
 
 int clean() {
     bool ret = false;
-    cmake::CMake cmake(".", true);
-    if (fs::exists(cmake.bin_dir)) {
-        ret = fs::remove_all(cmake.bin_dir);
-        fs::create_directory(cmake.bin_dir);
+    parser::Project project(nullptr, ".", true);
+    if (fs::exists(project.build_dir)) {
+        ret = fs::remove_all(project.build_dir);
+        fs::create_directory(project.build_dir);
     }
     return !ret;
 }
 
 int install() {
-    cmake::CMake cmake(".", false);
-    auto cmd = "cmake --install " + cmake.bin_dir;
+    parser::Project project(nullptr, ".", false);
+    auto cmd = "cmake --install " + project.build_dir;
     return ::system(cmd.c_str());
 }
-
-} // namespace cmkr::build
+} // namespace build
+} // namespace cmkr
 
 int cmkr_build_run(int argc, char **argv) {
     try {
@@ -96,4 +93,4 @@ int cmkr_build_install(void) {
     } catch (...) {
         return cmkr::error::Status(cmkr::error::Status::Code::InstallError);
     }
-}
+}

src/cmake.cpp

@@ -1,238 +0,0 @@
-#include "cmake.hpp"
-
-#include <filesystem>
-#include <stdexcept>
-#include <toml.hpp>
-
-namespace fs = std::filesystem;
-
-namespace cmkr::cmake {
-
-namespace detail {
-std::vector<std::string> to_string_vec(
-    const std::vector<toml::basic_value<toml::discard_comments, std::unordered_map, std::vector>>
-        &vals) {
-    std::vector<std::string> temp;
-    for (const auto &val : vals)
-        temp.push_back(val.as_string());
-    return temp;
-}
-} // namespace detail
-
-CMake::CMake(const std::string &path, bool build) {
-    if (!fs::exists(fs::path(path) / "cmake.toml")) {
-        throw std::runtime_error("No cmake.toml was found!");
-    }
-    const auto toml = toml::parse((fs::path(path) / "cmake.toml").string());
-    if (build) {
-        if (toml.contains("cmake")) {
-            const auto &cmake = toml::find(toml, "cmake");
-
-            if (cmake.contains("bin-dir")) {
-                bin_dir = toml::find(cmake, "bin-dir").as_string();
-            }
-
-            if (cmake.contains("generator")) {
-                generator = toml::find(cmake, "generator").as_string();
-            }
-
-            if (cmake.contains("config")) {
-                config = toml::find(cmake, "config").as_string();
-            }
-
-            if (cmake.contains("arguments")) {
-                gen_args = detail::to_string_vec(toml::find(cmake, "arguments").as_array());
-            }
-        }
-    } else {
-        if (toml.contains("cmake")) {
-            const auto &cmake = toml::find(toml, "cmake");
-            cmake_version = toml::find(cmake, "minimum").as_string();
-
-            if (cmake.contains("cpp-flags")) {
-                cppflags = detail::to_string_vec(toml::find(cmake, "cpp-flags").as_array());
-            }
-
-            if (cmake.contains("c-flags")) {
-                cflags = detail::to_string_vec(toml::find(cmake, "c-flags").as_array());
-            }
-
-            if (cmake.contains("link-flags")) {
-                linkflags = detail::to_string_vec(toml::find(cmake, "link-flags").as_array());
-            }
-
-            if (cmake.contains("subdirs")) {
-                subdirs = detail::to_string_vec(toml::find(cmake, "subdirs").as_array());
-            }
-        }
-
-        if (toml.contains("project")) {
-            const auto &project = toml::find(toml, "project");
-            proj_name = toml::find(project, "name").as_string();
-            proj_version = toml::find(project, "version").as_string();
-        }
-
-        if (toml.contains("settings")) {
-            using set_map =
-                std::map<std::string, toml::basic_value<toml::discard_comments, std::unordered_map,
-                                                        std::vector>>;
-            const auto &sets = toml::find<set_map>(toml, "settings");
-            for (const auto set : sets) {
-                Setting s;
-                s.name = set.first;
-                if (set.second.is_boolean()) {
-                    s.val = set.second.as_boolean();
-                } else if (set.second.is_string()) {
-                    s.val = set.second.as_string();
-                } else {
-                    if (set.second.contains("comment")) {
-                        s.comment = toml::find(set.second, "comment").as_string();
-                    }
-                    if (set.second.contains("value")) {
-                        auto v = toml::find(set.second, "value");
-                        if (v.is_boolean()) {
-                            s.val = v.as_boolean();
-                        } else {
-                            s.val = v.as_string();
-                        }
-                    }
-                    if (set.second.contains("cache")) {
-                        s.cache = toml::find(set.second, "cache").as_boolean();
-                    }
-                    if (set.second.contains("force")) {
-                        s.force = toml::find(set.second, "force").as_boolean();
-                    }
-                }
-                settings.push_back(s);
-            }
-        }
-
-        if (toml.contains("options")) {
-            using opts_map =
-                std::map<std::string, toml::basic_value<toml::discard_comments, std::unordered_map,
-                                                        std::vector>>;
-            const auto &opts = toml::find<opts_map>(toml, "options");
-            for (const auto opt : opts) {
-                Option o;
-                o.name = opt.first;
-                if (opt.second.is_boolean()) {
-                    o.val = opt.second.as_boolean();
-                } else {
-                    if (opt.second.contains("comment")) {
-                        o.comment = toml::find(opt.second, "comment").as_string();
-                    }
-                    if (opt.second.contains("value")) {
-                        o.val = toml::find(opt.second, "value").as_boolean();
-                    }
-                }
-                options.push_back(o);
-            }
-        }
-
-        if (toml.contains("find-package")) {
-            using pkg_map =
-                std::map<std::string, toml::basic_value<toml::discard_comments, std::unordered_map,
-                                                        std::vector>>;
-            const auto &pkgs = toml::find<pkg_map>(toml, "find-package");
-            for (const auto &pkg : pkgs) {
-                Package p;
-                p.name = pkg.first;
-                if (pkg.second.is_string()) {
-                    p.version = pkg.second.as_string();
-                } else {
-                    if (pkg.second.contains("version")) {
-                        p.version = toml::find(pkg.second, "version").as_string();
-                    }
-                    if (pkg.second.contains("required")) {
-                        p.required = toml::find(pkg.second, "required").as_boolean();
-                    }
-                    if (pkg.second.contains("components")) {
-                        p.components =
-                            detail::to_string_vec(toml::find(pkg.second, "components").as_array());
-                    }
-                }
-                packages.push_back(p);
-            }
-        }
-
-        if (toml.contains("fetch-content")) {
-            using content_map = std::map<std::string, std::map<std::string, std::string>>;
-            contents = toml::find<content_map>(toml, "fetch-content");
-        }
-
-        if (toml.contains("bin")) {
-            const auto &bins = toml::find(toml, "bin").as_array();
-
-            for (const auto &bin : bins) {
-                Bin b;
-                b.name = toml::find(bin, "name").as_string();
-                b.type = toml::find(bin, "type").as_string();
-
-                b.sources = detail::to_string_vec(toml::find(bin, "sources").as_array());
-
-                if (bin.contains("include-dirs")) {
-                    b.include_dirs =
-                        detail::to_string_vec(toml::find(bin, "include-dirs").as_array());
-                }
-
-                if (bin.contains("link-libs")) {
-                    b.link_libs = detail::to_string_vec(toml::find(bin, "link-libs").as_array());
-                }
-
-                if (bin.contains("features")) {
-                    b.features = detail::to_string_vec(toml::find(bin, "features").as_array());
-                }
-
-                if (bin.contains("defines")) {
-                    b.defines = detail::to_string_vec(toml::find(bin, "defines").as_array());
-                }
-
-                if (bin.contains("alias")) {
-                    b.alias = toml::find(bin, "alias").as_string();
-                }
-
-                if (bin.contains("properties")) {
-                    using prop_map = std::map<std::string, std::string>;
-                    b.properties = toml::find<prop_map>(bin, "properties");
-                }
-
-                binaries.push_back(b);
-            }
-        }
-
-        if (toml.contains("test")) {
-            const auto &ts = toml::find(toml, "test").as_array();
-            for (const auto &t : ts) {
-                Test test;
-                test.name = toml::find(t, "name").as_string();
-                test.cmd = toml::find(t, "type").as_string();
-                if (t.contains("arguments")) {
-                    test.args = detail::to_string_vec(toml::find(t, "arguments").as_array());
-                }
-                tests.push_back(test);
-            }
-        }
-
-        if (toml.contains("install")) {
-            const auto &ts = toml::find(toml, "install").as_array();
-            for (const auto &t : ts) {
-                Install inst;
-                if (t.contains("targets")) {
-                    inst.targets = detail::to_string_vec(toml::find(t, "targets").as_array());
-                }
-                if (t.contains("files")) {
-                    inst.files = detail::to_string_vec(toml::find(t, "files").as_array());
-                }
-                if (t.contains("dirs")) {
-                    inst.dirs = detail::to_string_vec(toml::find(t, "dirs").as_array());
-                }
-                if (t.contains("configs")) {
-                    inst.configs = detail::to_string_vec(toml::find(t, "configs").as_array());
-                }
-                inst.destination = toml::find(t, "destination").as_string();
-                installs.push_back(inst);
-            }
-        }
-    }
-}
-} // namespace cmkr::cmake

src/cmake.hpp

@@ -1,81 +0,0 @@
-#pragma once
-
-#include <map>
-#include <string>
-#include <vector>
-#include <variant>
-
-namespace cmkr::cmake {
-
-
-struct Setting {
-    std::string name;
-    std::string comment;
-    std::variant<bool, std::string> val;
-    bool cache = false;
-    bool force = false;
-};
-
-struct Option {
-    std::string name;
-    std::string comment;
-    bool val;
-};
-
-struct Package {
-    std::string name;
-    std::string version;
-    bool required = true;
-    std::vector<std::string> components;
-};
-
-struct Bin {
-    std::string name;
-    std::string type;
-    std::vector<std::string> sources;
-    std::vector<std::string> include_dirs;
-    std::vector<std::string> features;
-    std::vector<std::string> defines;
-    std::vector<std::string> link_libs;
-    std::string alias;
-    std::map<std::string, std::string> properties;
-};
-
-struct Test {
-    std::string name;
-    std::string cmd;
-    std::vector<std::string> args;
-};
-
-struct Install {
-    std::vector<std::string> targets;
-    std::vector<std::string> files;
-    std::vector<std::string> dirs;
-    std::vector<std::string> configs;
-    std::string destination;
-};
-
-struct CMake {
-    std::string cmake_version = "3.15";
-    std::string bin_dir = "bin";
-    std::string generator;
-    std::string config;
-    std::vector<std::string> subdirs;
-    std::vector<std::string> cppflags;
-    std::vector<std::string> cflags;
-    std::vector<std::string> linkflags;
-    std::vector<std::string> gen_args;
-    std::vector<std::string> build_args;
-    std::string proj_name;
-    std::string proj_version;
-    std::vector<Setting> settings;
-    std::vector<Option> options;
-    std::vector<Package> packages;
-    std::map<std::string, std::map<std::string, std::string>> contents;
-    std::vector<Bin> binaries;
-    std::vector<Test> tests;
-    std::vector<Install> installs;
-    CMake(const std::string &path, bool build);
-};
-
-} // namespace cmkr::cmake

src/cmake_generator.cpp

@@ -0,0 +1,969 @@
+#include "cmake_generator.hpp"
+#include "error.hpp"
+#include "literals.hpp"
+#include <resources/cmkr.hpp>
+
+#include "fs.hpp"
+#include <cstdio>
+#include <fstream>
+#include <sstream>
+#include <stdexcept>
+
+namespace cmkr {
+namespace gen {
+
+static std::string to_upper(const std::string &str) {
+    std::string temp;
+    temp.reserve(str.size());
+    for (auto c : str) {
+        temp.push_back(::toupper(c));
+    }
+    return temp;
+}
+
+static std::string format(const char *format, tsl::ordered_map<std::string, std::string> variables) {
+    std::string s = format;
+    for (const auto &itr : variables) {
+        size_t start_pos = 0;
+        while ((start_pos = s.find(itr.first, start_pos)) != std::string::npos) {
+            s.replace(start_pos, itr.first.length(), itr.second);
+            start_pos += itr.second.length();
+        }
+    }
+    return s;
+}
+
+static std::vector<std::string> expand_cmake_path(const fs::path &name, const fs::path &toml_dir) {
+    std::vector<std::string> temp;
+
+    auto extract_suffix = [](const fs::path &base, const fs::path &full) {
+        auto fullpath = full.string();
+        auto base_len = base.string().length();
+        auto delet = fullpath.substr(base_len + 1, fullpath.length() - base_len);
+        return delet;
+    };
+
+    auto stem = name.filename().stem().string();
+    auto ext = name.extension();
+
+    if (stem == "*") {
+        for (const auto &f : fs::directory_iterator(toml_dir / name.parent_path(), fs::directory_options::follow_directory_symlink)) {
+            if (!f.is_directory() && f.path().extension() == ext) {
+                temp.push_back(extract_suffix(toml_dir, f));
+            }
+        }
+    } else if (stem == "**") {
+        for (const auto &f : fs::recursive_directory_iterator(toml_dir / name.parent_path(), fs::directory_options::follow_directory_symlink)) {
+            if (!f.is_directory() && f.path().extension() == ext) {
+                temp.push_back(extract_suffix(toml_dir, f.path()));
+            }
+        }
+    } else {
+        temp.push_back(name.string());
+    }
+    // Normalize all paths to work with CMake (it needs a / on Windows as well)
+    for (auto &path : temp) {
+        std::replace(path.begin(), path.end(), '\\', '/');
+    }
+    // Sort paths alphabetically for consistent cross-OS generation
+    std::sort(temp.begin(), temp.end());
+    return temp;
+}
+
+static std::vector<std::string> expand_cmake_paths(const std::vector<std::string> &sources, const fs::path &toml_dir) {
+    // TODO: add duplicate checking
+    std::vector<std::string> result;
+    for (const auto &src : sources) {
+        auto expanded = expand_cmake_path(src, toml_dir);
+        for (const auto &f : expanded) {
+            result.push_back(f);
+        }
+    }
+    return result;
+}
+
+static void create_file(const fs::path &path, const std::string &contents) {
+    if (!path.parent_path().empty()) {
+        fs::create_directories(path.parent_path());
+    }
+    std::ofstream ofs(path, std::ios::binary);
+    if (!ofs) {
+        throw std::runtime_error("Failed to create " + path.string());
+    }
+    ofs << contents;
+}
+
+void generate_project(const std::string &type) {
+    const auto name = fs::current_path().stem().string();
+    if (fs::exists(fs::current_path() / "cmake.toml")) {
+        throw std::runtime_error("Cannot initialize a project when cmake.toml already exists!");
+    }
+
+    tsl::ordered_map<std::string, std::string> variables = {
+        {"@name", name},
+        {"@type", type},
+    };
+
+    if (!fs::is_empty(fs::current_path())) {
+        create_file("cmake.toml", format(toml_migration, variables));
+        puts("Generated migration cmake.toml in existing project directory...");
+        return;
+    }
+
+    if (type == "executable") {
+        create_file("cmake.toml", format(toml_executable, variables));
+        create_file("src/" + name + "/main.cpp", format(cpp_executable, variables));
+    } else if (type == "static" || type == "shared" || type == "library") {
+        create_file("cmake.toml", format(toml_library, variables));
+        create_file("src/" + name + "/" + name + ".cpp", format(cpp_library, variables));
+        create_file("include/" + name + "/" + name + ".hpp", format(hpp_library, variables));
+    } else if (type == "interface") {
+        create_file("cmake.toml", format(toml_interface, variables));
+        create_file("include/" + name + "/" + name + ".hpp", format(hpp_interface, variables));
+    } else {
+        throw std::runtime_error("Unknown project type " + type + "! Supported types are: executable, library, shared, static, interface");
+    }
+}
+
+struct CommandEndl {
+    std::stringstream &ss;
+    CommandEndl(std::stringstream &ss) : ss(ss) {}
+    void endl() { ss << '\n'; }
+};
+
+struct RawArg {
+    RawArg() = default;
+    RawArg(std::string arg) : arg(std::move(arg)) {}
+
+    std::string arg;
+};
+
+// Credit: JustMagic
+struct Command {
+    std::stringstream &ss;
+    int depth = 0;
+    std::string command;
+    bool first_arg = true;
+    bool had_newline = false;
+    bool generated = false;
+    std::string post_comment;
+
+    Command(std::stringstream &ss, int depth, std::string command, std::string post_comment)
+        : ss(ss), depth(depth), command(std::move(command)), post_comment(std::move(post_comment)) {}
+
+    ~Command() noexcept(false) {
+        if (!generated) {
+            throw std::runtime_error("Incorrect usage of cmd(), you probably forgot ()");
+        }
+    }
+
+    static std::string quote(const std::string &str) {
+        // Don't quote arguments that don't need quoting
+        if (str.find(' ') == std::string::npos && str.find('\"') == std::string::npos && str.find('/') == std::string::npos &&
+            str.find(';') == std::string::npos) {
+            return str;
+        }
+        std::string result;
+        result += "\"";
+        for (char ch : str) {
+            switch (ch) {
+            case '\\':
+            case '\"':
+                result += '\\';
+            default:
+                result += ch;
+                break;
+            }
+        }
+        result += "\"";
+        return result;
+    }
+
+    static std::string indent(int n) {
+        std::string result;
+        for (int i = 0; i < n; i++) {
+            result += '\t';
+        }
+        return result;
+    }
+
+    template <class T>
+    bool print_arg(const std::vector<T> &vec) {
+        if (vec.empty()) {
+            return true;
+        }
+
+        had_newline = true;
+        for (const auto &value : vec) {
+            print_arg(value);
+        }
+
+        return true;
+    }
+
+    template <class Key, class Value>
+    bool print_arg(const tsl::ordered_map<Key, Value> &map) {
+        if (map.empty()) {
+            return true;
+        }
+
+        for (const auto &itr : map) {
+            print_arg(itr);
+        }
+
+        return true;
+    }
+
+    template <class K>
+    bool print_arg(const std::pair<K, std::vector<std::string>> &kv) {
+        if (kv.second.empty()) {
+            return true;
+        }
+
+        had_newline = true;
+        print_arg(kv.first);
+        depth++;
+        for (const auto &s : kv.second) {
+            print_arg(s);
+        }
+        depth--;
+
+        return true;
+    }
+
+    template <class K, class V>
+    bool print_arg(const std::pair<K, V> &kv) {
+        if (kv.second.empty()) {
+            return true;
+        }
+
+        had_newline = true;
+        print_arg(kv.first);
+        depth++;
+        print_arg(kv.second);
+        depth--;
+
+        return true;
+    }
+
+    bool print_arg(const RawArg &arg) {
+        if (arg.arg.empty()) {
+            return true;
+        }
+
+        if (had_newline) {
+            first_arg = false;
+            ss << '\n' << indent(depth + 1);
+        } else if (first_arg) {
+            first_arg = false;
+        } else {
+            ss << ' ';
+        }
+
+        ss << arg.arg;
+        return true;
+    }
+
+    template <class T>
+    bool print_arg(const T &value) {
+        std::stringstream tmp;
+        tmp << value;
+        auto str = tmp.str();
+        if (str.empty()) {
+            return true;
+        }
+
+        if (had_newline) {
+            first_arg = false;
+            ss << '\n' << indent(depth + 1);
+        } else if (first_arg) {
+            first_arg = false;
+        } else {
+            ss << ' ';
+        }
+
+        ss << quote(str);
+        return true;
+    }
+
+    template <class... Ts>
+    CommandEndl operator()(Ts &&...values) {
+        generated = true;
+        ss << indent(depth) << command << '(';
+        (void)std::initializer_list<bool>{print_arg(values)...};
+        if (had_newline)
+            ss << '\n' << indent(depth);
+        ss << ")";
+        if (!post_comment.empty()) {
+            ss << " # " << post_comment;
+        }
+        ss << "\n";
+        return CommandEndl(ss);
+    }
+};
+
+static std::string tolf(const std::string &str) {
+    std::string result;
+    for (char ch : str) {
+        if (ch != '\r') {
+            result += ch;
+        }
+    }
+    return result;
+};
+
+struct Generator {
+    Generator(parser::Project &project) : project(project) {}
+    Generator(const Generator &) = delete;
+
+    parser::Project &project;
+    std::stringstream ss;
+    int indent = 0;
+
+    Command cmd(const std::string &command, const std::string &post_comment = "") {
+        if (command.empty())
+            throw std::invalid_argument("command cannot be empty");
+        if (command == "if") {
+            indent++;
+            return Command(ss, indent - 1, command, post_comment);
+        } else if (command == "else" || command == "elseif") {
+            return Command(ss, indent - 1, command, post_comment);
+        } else if (command == "endif") {
+            indent--;
+        }
+        return Command(ss, indent, command, post_comment);
+    }
+
+    CommandEndl comment(const std::string &comment) {
+        ss << Command::indent(indent) << "# " << comment << '\n';
+        return CommandEndl(ss);
+    }
+
+    void endl() { ss << '\n'; }
+
+    void inject_includes(const std::vector<std::string> &includes) {
+        if (!includes.empty()) {
+            for (const auto &file : includes) {
+                if (!fs::is_regular_file(file)) {
+                    throw std::runtime_error("Include '" + file + "' does not exist");
+                }
+                cmd("include")(file);
+            }
+        }
+    }
+
+    void inject_cmake(const std::string &cmake) {
+        if (!cmake.empty()) {
+            if (cmake.back() == '\"') {
+                throw std::runtime_error("Detected additional \" at the end of cmake block");
+            }
+            auto cmake_lf = tolf(cmake);
+            while (cmake_lf.back() == '\n')
+                cmake_lf.pop_back();
+            bool did_indent = false;
+            for (char ch : cmake_lf) {
+                if (!did_indent) {
+                    ss << Command::indent(indent);
+                    did_indent = true;
+                } else if (ch == '\n') {
+                    did_indent = false;
+                }
+                ss << ch;
+            }
+            ss << '\n';
+        }
+    }
+
+    template <typename T, typename Lambda>
+    void handle_condition(const parser::Condition<T> &value, const Lambda &fn) {
+        if (!value.empty()) {
+            for (const auto &itr : value) {
+                const auto &condition = itr.first;
+                if (!condition.empty()) {
+                    if (project.conditions.count(condition) == 0) {
+                        // TODO: somehow print line number information here?
+                        throw std::runtime_error("Unknown condition '" + condition + "'");
+                    }
+                    cmd("if", condition)(RawArg(project.conditions[condition]));
+                }
+
+                if (!itr.second.empty()) {
+                    fn(condition, itr.second);
+                }
+
+                if (!condition.empty()) {
+                    cmd("endif")();
+                }
+                endl();
+            }
+        }
+    }
+};
+
+static bool vcpkg_valid_identifier(const std::string &name) {
+    // prn|aux|nul|con|lpt[1-9]|com[1-9]|core|default
+    auto is_reserved = [](const std::string &s) {
+        if (s == "prn" || s == "aux" || s == "nul" || s == "con" || s == "core" || s == "default") {
+            return true;
+        }
+        if (s.length() == 4 && (s.compare(0, 3, "lpt") == 0 || s.compare(0, 3, "com") == 0) && (s[3] >= '1' && s[3] <= '9')) {
+            return true;
+        }
+        return false;
+    };
+    // [a-z0-9]+(-[a-z0-9]+)*
+    auto is_identifier = [](const std::string &s) {
+        for (size_t i = 0; i < s.length(); i++) {
+            auto c = s[i];
+            if ((c >= 'a' && c <= 'z') || (c >= '0' && c <= '9') || (i > 0 && c == '-')) {
+                continue;
+            }
+            return false;
+        }
+        return true;
+    };
+    return is_identifier(name) && !is_reserved(name);
+}
+
+static std::string vcpkg_escape_identifier(const std::string &name) {
+    // Do a reasonable effort to escape the project name for use with vcpkg
+    std::string escaped;
+    for (char ch : name) {
+        if ((ch & 0x80) != 0) {
+            throw std::runtime_error("Non-ASCII characters are not allowed in [project].name when using [vcpkg]");
+        }
+
+        if (ch == '_' || ch == ' ') {
+            ch = '-';
+        }
+
+        escaped += std::tolower(ch);
+    }
+
+    if (!vcpkg_valid_identifier(escaped)) {
+        throw std::runtime_error("The escaped project name '" + escaped + "' is not usable with [vcpkg]");
+    }
+    return escaped;
+}
+
+void generate_cmake(const char *path, const parser::Project *parent_project) {
+    if (!fs::exists(fs::path(path) / "cmake.toml")) {
+        throw std::runtime_error("No cmake.toml found!");
+    }
+
+    parser::Project project(parent_project, path, false);
+    Generator gen(project);
+
+    // Helper lambdas for more convenient CMake generation
+    auto &ss = gen.ss;
+    auto cmd = [&gen](const std::string &command) { return gen.cmd(command); };
+    auto comment = [&gen](const std::string &comment) { return gen.comment(comment); };
+    auto endl = [&gen]() { gen.endl(); };
+    auto inject_includes = [&gen](const std::vector<std::string> &includes) { gen.inject_includes(includes); };
+    auto inject_cmake = [&gen](const std::string &cmake) { gen.inject_cmake(cmake); };
+
+    std::string cmkr_url = "https://github.com/build-cpp/cmkr";
+    comment("This file is automatically generated from cmake.toml - DO NOT EDIT");
+    comment("See " + cmkr_url + " for more information");
+    endl();
+
+    // Root project doesn't have a parent
+    if (parent_project == nullptr) {
+        cmd("cmake_minimum_required")("VERSION", project.cmake_version).endl();
+
+        if (!project.allow_in_tree) {
+            // clang-format off
+            cmd("if")("CMAKE_SOURCE_DIR", "STREQUAL", "CMAKE_BINARY_DIR");
+                cmd("message")("FATAL_ERROR", "In-tree builds are not supported. Run CMake from a separate directory: cmake -B build");
+            cmd("endif")().endl();
+            // clang-format on
+        }
+
+        comment("Regenerate CMakeLists.txt automatically in the root project");
+        cmd("set")("CMKR_ROOT_PROJECT", "OFF");
+        // clang-format off
+        cmd("if")("CMAKE_CURRENT_SOURCE_DIR", "STREQUAL", "CMAKE_SOURCE_DIR");
+            cmd("set")("CMKR_ROOT_PROJECT", "ON").endl();
+
+            if (!project.cmkr_include.empty()) {
+                comment("Bootstrap cmkr");
+                cmd("include")(project.cmkr_include, "OPTIONAL", "RESULT_VARIABLE", "CMKR_INCLUDE_RESULT");
+                cmd("if")("CMKR_INCLUDE_RESULT");
+                    cmd("cmkr")();
+                cmd("endif")().endl();
+            }
+
+            comment("Enable folder support");
+            cmd("set_property")("GLOBAL", "PROPERTY", "USE_FOLDERS", "ON");
+        cmd("endif")().endl();
+        // clang-format on
+
+        fs::path cmkr_include(project.cmkr_include);
+        if (!project.cmkr_include.empty() && !fs::exists(cmkr_include) && cmkr_include.is_relative()) {
+            create_file(cmkr_include, resources::cmkr);
+        }
+    }
+
+    // clang-format off
+    comment("Create a configure-time dependency on cmake.toml to improve IDE support");
+    cmd("if")("CMKR_ROOT_PROJECT");
+        cmd("configure_file")("cmake.toml", "cmake.toml", "COPYONLY");
+    cmd("endif")().endl();
+    // clang-format on
+
+    // TODO: remove support and replace with global compile-features
+    if (!project.cppflags.empty()) {
+        ss << "set(CMAKE_CXX_FLAGS ${CMAKE_CXX_FLAGS} \"";
+        for (const auto &flag : project.cppflags) {
+            ss << flag << " ";
+        }
+        ss << "\")\n\n";
+    }
+
+    // TODO: remove support and replace with global compile-features
+    if (!project.cflags.empty()) {
+        ss << "set(CMAKE_C_FLAGS ${CMAKE_C_FLAGS} \"";
+        for (const auto &flag : project.cflags) {
+            ss << flag << " ";
+        }
+        ss << "\")\n\n";
+    }
+
+    // TODO: remove support and replace with global linker-flags
+    if (!project.linkflags.empty()) {
+        ss << "set(CMAKE_EXE_LINKER_FLAGS ${CMAKE_EXE_LINKER_FLAGS} \"";
+        for (const auto &flag : project.linkflags) {
+            ss << flag << " ";
+        }
+        ss << "\")\n\n";
+    }
+
+    gen.handle_condition(project.include_before, [&](const std::string &, const std::vector<std::string> &includes) { inject_includes(includes); });
+    gen.handle_condition(project.cmake_before, [&](const std::string &, const std::string &cmake) { inject_cmake(cmake); });
+
+    if (!project.project_name.empty()) {
+        auto languages = std::make_pair("LANGUAGES", project.project_languages);
+        auto version = std::make_pair("VERSION", project.project_version);
+        auto description = std::make_pair("DESCRIPTION", project.project_description);
+        cmd("project")(project.project_name, languages, version, description).endl();
+    }
+
+    gen.handle_condition(project.include_after, [&](const std::string &, const std::vector<std::string> &includes) { inject_includes(includes); });
+    gen.handle_condition(project.cmake_after, [&](const std::string &, const std::string &cmake) { inject_cmake(cmake); });
+
+    if (!project.contents.empty()) {
+        cmd("include")("FetchContent").endl();
+        for (const auto &content : project.contents) {
+            cmd("message")("STATUS", "Fetching " + content.name + "...");
+            ss << "FetchContent_Declare(\n\t" << content.name << "\n";
+            for (const auto &arg : content.arguments) {
+                ss << "\t" << arg.first << "\n\t\t" << arg.second << "\n";
+            }
+            ss << ")\n";
+            cmd("FetchContent_MakeAvailable")(content.name).endl();
+        }
+    }
+
+    if (!project.vcpkg.packages.empty()) {
+        // Allow the user to specify a url or derive it from the version
+        auto url = project.vcpkg.url;
+        if (url.empty()) {
+            if (project.vcpkg.version.empty()) {
+                throw std::runtime_error("You need either [vcpkg].version or [vcpkg].url");
+            }
+            url = "https://github.com/microsoft/vcpkg/archive/refs/tags/" + project.vcpkg.version + ".tar.gz";
+        }
+
+        // Show a nicer error than vcpkg when specifying an invalid package name
+        for (const auto &package : project.vcpkg.packages) {
+            if (!vcpkg_valid_identifier(package)) {
+                throw std::runtime_error("Invalid [vcpkg].packages name '" + package + "' (needs to be lowercase alphanumeric)");
+            }
+        }
+
+        // CMake to bootstrap vcpkg and download the packages
+        // clang-format off
+        cmd("if")("CMKR_ROOT_PROJECT", "AND", "NOT", "CMKR_DISABLE_VCPKG");
+            cmd("include")("FetchContent");
+            cmd("message")("STATUS", "Fetching vcpkg...");
+            cmd("FetchContent_Declare")("vcpkg", "URL", url);
+            cmd("FetchContent_MakeAvailable")("vcpkg");
+            cmd("include")("${vcpkg_SOURCE_DIR}/scripts/buildsystems/vcpkg.cmake");
+        cmd("endif")();
+        endl();
+        // clang-format on
+
+        // Generate vcpkg.json (sorry for the ugly string handling, nlohmann compiles very slowly)
+        std::ofstream ofs("vcpkg.json", std::ios::binary);
+        if (!ofs) {
+            throw std::runtime_error("Failed to create a vcpkg.json manifest file!");
+        }
+        ofs << R"({
+  "$cmkr": "This file is automatically generated from cmake.toml - DO NOT EDIT",
+  "$cmkr-url": "https://github.com/build-cpp/cmkr",
+  "$schema": "https://raw.githubusercontent.com/microsoft/vcpkg/master/scripts/vcpkg.schema.json",
+  "dependencies": [
+)";
+
+        const auto &packages = project.vcpkg.packages;
+        for (size_t i = 0; i < packages.size(); i++) {
+            const auto &package = packages[i];
+            if (!vcpkg_valid_identifier(package)) {
+                throw std::runtime_error("Invalid vcpkg package name '" + package + "'");
+            }
+            ofs << "    \"" << package << '\"';
+            if (i + 1 < packages.size()) {
+                ofs << ',';
+            }
+            ofs << '\n';
+        }
+
+        auto escape = [](const std::string &str) {
+            std::string result;
+            for (auto ch : str) {
+                if (ch == '\\' || ch == '\"') {
+                    result += '\\';
+                }
+                result += ch;
+            }
+            return result;
+        };
+
+        ofs << "  ],\n";
+        ofs << "  \"description\": \"" << escape(project.project_description) << "\",\n";
+        ofs << "  \"name\": \"" << escape(project.project_name) << "\",\n";
+        ofs << R"(  "version-string": "")" << '\n';
+        ofs << "}\n";
+    }
+
+    if (!project.packages.empty()) {
+        comment("Packages");
+        for (const auto &dep : project.packages) {
+            auto version = dep.version;
+            if (version == "*")
+                version.clear();
+            auto required = dep.required ? "REQUIRED" : "";
+            auto config = dep.config ? "CONFIG" : "";
+            auto components = std::make_pair("COMPONENTS", dep.components);
+            cmd("find_package")(dep.name, version, required, config, components).endl();
+        }
+    }
+
+    if (!project.options.empty()) {
+        comment("Options");
+        for (const auto &opt : project.options) {
+            cmd("option")(opt.name, opt.comment, opt.val ? "ON" : "OFF");
+        }
+        endl();
+    }
+
+    if (!project.settings.empty()) {
+        comment("Settings");
+        for (const auto &set : project.settings) {
+            std::string set_val;
+            if (set.val.index() == 1) {
+                set_val = mpark::get<1>(set.val);
+            } else {
+                set_val = mpark::get<0>(set.val) ? "ON" : "OFF";
+            }
+
+            if (set.cache) {
+                auto typ = set.val.index() == 1 ? "STRING" : "BOOL";
+                auto force = set.force ? "FORCE" : "";
+                cmd("set")(set.name, set_val, typ, set.comment, force);
+            } else {
+                cmd("set")(set.name, set_val);
+            }
+        }
+        endl();
+    }
+
+    auto add_subdir = [&](const std::string &dir) {
+        // clang-format off
+        comment(dir);
+        cmd("set")("CMKR_CMAKE_FOLDER", "${CMAKE_FOLDER}");
+        cmd("if")("CMAKE_FOLDER");
+            cmd("set")("CMAKE_FOLDER", "${CMAKE_FOLDER}/" + dir);
+        cmd("else")();
+            cmd("set")("CMAKE_FOLDER", dir);
+        cmd("endif")();
+        // clang-format on
+
+        cmd("add_subdirectory")(dir);
+        cmd("set")("CMAKE_FOLDER", "${CMKR_CMAKE_FOLDER}").endl();
+    };
+
+    // generate_cmake is called on the subdirectories recursively later
+    if (!project.project_subdirs.empty()) {
+        gen.handle_condition(project.project_subdirs, [&](const std::string &, const std::vector<std::string> &subdirs) {
+            for (const auto &dir : subdirs) {
+                add_subdir(dir);
+            }
+        });
+        endl();
+    }
+    for (const auto &subdir : project.subdirs) {
+        if (!subdir.condition.empty()) {
+            const auto &condition = subdir.condition;
+            if (project.conditions.count(condition) == 0) {
+                throw std::runtime_error("Unknown condition '" + condition + "' for [subdir." + subdir.name + "]");
+            }
+            gen.cmd("if", condition)(RawArg(project.conditions[condition]));
+        }
+
+        gen.handle_condition(subdir.include_before,
+                             [&](const std::string &, const std::vector<std::string> &includes) { inject_includes(includes); });
+        gen.handle_condition(subdir.cmake_before, [&](const std::string &, const std::string &cmake) { inject_cmake(cmake); });
+
+        add_subdir(subdir.name);
+
+        gen.handle_condition(subdir.include_after, [&](const std::string &, const std::vector<std::string> &includes) { inject_includes(includes); });
+        gen.handle_condition(subdir.cmake_after, [&](const std::string &, const std::string &cmake) { inject_cmake(cmake); });
+
+        if (!subdir.condition.empty()) {
+            cmd("endif")();
+        }
+    }
+
+    if (!project.targets.empty()) {
+        for (const auto &target : project.targets) {
+            comment("Target " + target.name);
+
+            if (!target.condition.empty()) {
+                const auto &condition = target.condition;
+                if (project.conditions.count(condition) == 0) {
+                    throw std::runtime_error("Unknown condition '" + condition + "' for [target." + target.name + "]");
+                }
+                gen.cmd("if", condition)(RawArg(project.conditions[condition]));
+            }
+
+            cmd("set")("CMKR_TARGET", target.name);
+
+            gen.handle_condition(target.include_before,
+                                 [&](const std::string &, const std::vector<std::string> &includes) { inject_includes(includes); });
+            gen.handle_condition(target.cmake_before, [&](const std::string &, const std::string &cmake) { inject_cmake(cmake); });
+
+            auto sources_var = target.name + "_SOURCES";
+
+            bool added_toml = false;
+            cmd("set")(sources_var, RawArg("\"\"")).endl();
+            gen.handle_condition(target.sources, [&](const std::string &condition, const std::vector<std::string> &condition_sources) {
+                auto sources = expand_cmake_paths(condition_sources, path);
+                if (sources.empty()) {
+                    auto source_key = condition.empty() ? "sources" : (condition + ".sources");
+                    throw std::runtime_error(target.name + " " + source_key + " wildcard found 0 files");
+                }
+                // Do not add cmake.toml twice
+                if (!added_toml && std::find(sources.begin(), sources.end(), "cmake.toml") != sources.end()) {
+                    added_toml = true;
+                }
+                cmd("list")("APPEND", sources_var, sources);
+            });
+
+            if (!added_toml && target.type != parser::target_interface) {
+                cmd("list")("APPEND", sources_var, std::vector<std::string>{"cmake.toml"}).endl();
+            }
+            cmd("set")("CMKR_SOURCES", "${" + sources_var + "}");
+
+            std::string add_command;
+            std::string target_type;
+            std::string target_scope;
+            switch (target.type) {
+            case parser::target_executable:
+                add_command = "add_executable";
+                target_type = "";
+                target_scope = "PRIVATE";
+                break;
+            case parser::target_library:
+                add_command = "add_library";
+                target_type = "";
+                target_scope = "PUBLIC";
+                break;
+            case parser::target_shared:
+                add_command = "add_library";
+                target_type = "SHARED";
+                target_scope = "PUBLIC";
+                break;
+            case parser::target_static:
+                add_command = "add_library";
+                target_type = "STATIC";
+                target_scope = "PUBLIC";
+                break;
+            case parser::target_interface:
+                add_command = "add_library";
+                target_type = "INTERFACE";
+                target_scope = "INTERFACE";
+                break;
+            case parser::target_custom:
+                // TODO: add proper support, this is hacky
+                add_command = "add_custom_target";
+                target_type = "SOURCES";
+                target_scope = "PUBLIC";
+                break;
+            case parser::target_object:
+                // NOTE: This is properly supported since 3.12
+                add_command = "add_library";
+                target_type = "OBJECT";
+                target_scope = "PUBLIC";
+                break;
+            default:
+                throw std::runtime_error("Unimplemented enum value");
+            }
+
+            cmd(add_command)(target.name, target_type).endl();
+
+            // clang-format off
+            cmd("if")(sources_var);
+                cmd("target_sources")(target.name, target.type == parser::target_interface ? "INTERFACE" : "PRIVATE", "${" + sources_var + "}");
+            cmd("endif")().endl();
+            // clang-format on
+
+            // The first executable target will become the Visual Studio startup project
+            if (target.type == parser::target_executable) {
+                cmd("get_directory_property")("CMKR_VS_STARTUP_PROJECT", "DIRECTORY", "${PROJECT_SOURCE_DIR}", "DEFINITION", "VS_STARTUP_PROJECT");
+                // clang-format off
+                cmd("if")("NOT", "CMKR_VS_STARTUP_PROJECT");
+                    cmd("set_property")("DIRECTORY", "${PROJECT_SOURCE_DIR}", "PROPERTY", "VS_STARTUP_PROJECT", target.name);
+                cmd("endif")().endl();
+                // clang-format on
+            }
+
+            if (!target.sources.empty()) {
+                cmd("source_group")("TREE", "${CMAKE_CURRENT_SOURCE_DIR}", "FILES", "${" + sources_var + "}").endl();
+            }
+
+            if (!target.alias.empty()) {
+                cmd("add_library")(target.alias, "ALIAS", target.name);
+            }
+
+            auto target_cmd = [&](const char *command, const parser::ConditionVector &cargs, const std::string &scope) {
+                gen.handle_condition(cargs,
+                                     [&](const std::string &, const std::vector<std::string> &args) { cmd(command)(target.name, scope, args); });
+            };
+
+            target_cmd("target_compile_definitions", target.compile_definitions, target_scope);
+            target_cmd("target_compile_definitions", target.private_compile_definitions, "PRIVATE");
+
+            target_cmd("target_compile_features", target.compile_features, target_scope);
+            target_cmd("target_compile_features", target.private_compile_features, "PRIVATE");
+
+            target_cmd("target_compile_options", target.compile_options, target_scope);
+            target_cmd("target_compile_options", target.private_compile_options, "PRIVATE");
+
+            target_cmd("target_include_directories", target.include_directories, target_scope);
+            target_cmd("target_include_directories", target.private_include_directories, "PRIVATE");
+
+            target_cmd("target_link_directories", target.link_directories, target_scope);
+            target_cmd("target_link_directories", target.private_link_directories, "PRIVATE");
+
+            target_cmd("target_link_libraries", target.link_libraries, target_scope);
+            target_cmd("target_link_libraries", target.private_link_libraries, "PRIVATE");
+
+            target_cmd("target_link_options", target.link_options, target_scope);
+            target_cmd("target_link_options", target.private_link_options, "PRIVATE");
+
+            target_cmd("target_precompile_headers", target.precompile_headers, target_scope);
+            target_cmd("target_precompile_headers", target.private_precompile_headers, "PRIVATE");
+
+            if (!target.properties.empty()) {
+                gen.handle_condition(target.properties, [&](const std::string &, const tsl::ordered_map<std::string, std::string> &properties) {
+                    cmd("set_target_properties")(target.name, "PROPERTIES", properties);
+                });
+            }
+
+            gen.handle_condition(target.include_after,
+                                 [&](const std::string &, const std::vector<std::string> &includes) { inject_includes(includes); });
+            gen.handle_condition(target.cmake_after, [&](const std::string &, const std::string &cmake) { inject_cmake(cmake); });
+
+            cmd("unset")("CMKR_TARGET");
+            cmd("unset")("CMKR_SOURCES");
+
+            if (!target.condition.empty()) {
+                cmd("endif")();
+            }
+
+            endl();
+        }
+    }
+
+    if (!project.tests.empty()) {
+        cmd("enable_testing")().endl();
+        for (const auto &test : project.tests) {
+            auto name = std::make_pair("NAME", test.name);
+            auto configurations = std::make_pair("CONFIGURATIONS", test.configurations);
+            auto dir = test.working_directory;
+            if (fs::is_directory(fs::path(path) / dir)) {
+                dir = "${CMAKE_CURRENT_LIST_DIR}/" + dir;
+            }
+            auto working_directory = std::make_pair("WORKING_DIRECTORY", dir);
+            auto command = std::make_pair("COMMAND", test.command);
+            auto arguments = std::make_pair("", test.arguments);
+            cmd("add_test")(name, configurations, working_directory, command, arguments).endl();
+        }
+    }
+
+    if (!project.installs.empty()) {
+        for (const auto &inst : project.installs) {
+            auto targets = std::make_pair("TARGETS", inst.targets);
+            auto dirs = std::make_pair("DIRS", inst.dirs);
+            std::vector<std::string> files_data;
+            if (!inst.files.empty()) {
+                files_data = expand_cmake_paths(inst.files, path);
+                if (files_data.empty()) {
+                    throw std::runtime_error("[[install]] files wildcard did not resolve to any files");
+                }
+            }
+            auto files = std::make_pair("FILES", inst.files);
+            auto configs = std::make_pair("CONFIGURATIONS", inst.configs);
+            auto destination = std::make_pair("DESTINATION", inst.destination);
+            auto component = std::make_pair("COMPONENT", inst.targets.empty() ? "" : inst.targets.front());
+            cmd("install")(targets, dirs, files, configs, destination, component);
+        }
+    }
+
+    // Generate CMakeLists.txt
+    auto list_path = fs::path(path) / "CMakeLists.txt";
+
+    auto should_regenerate = [&list_path, &ss]() {
+        if (!fs::exists(list_path))
+            return true;
+
+        std::ifstream ifs(list_path, std::ios::binary);
+        if (!ifs.is_open()) {
+            throw std::runtime_error("Failed to read " + list_path.string());
+        }
+
+        std::string data((std::istreambuf_iterator<char>(ifs)), std::istreambuf_iterator<char>());
+        return data != ss.str();
+    }();
+
+    if (should_regenerate) {
+        create_file(list_path, ss.str());
+    }
+
+    auto generate_subdir = [path, &project](const fs::path &sub) {
+        // Skip generating for subdirectories that have a cmake.toml with a [project] in it
+        fs::path subpath;
+        for (const auto &p : sub) {
+            subpath /= p;
+            if (parser::is_root_path((path / subpath).string())) {
+                return;
+            }
+        }
+
+        subpath = path / sub;
+        if (fs::exists(subpath / "cmake.toml")) {
+            generate_cmake(subpath.string().c_str(), &project);
+        }
+    };
+    for (const auto &itr : project.project_subdirs) {
+        for (const auto &sub : itr.second) {
+            generate_subdir(sub);
+        }
+    }
+    for (const auto &subdir : project.subdirs) {
+        generate_subdir(subdir.name);
+    }
+}
+} // namespace gen
+} // namespace cmkr

src/error.cpp

@@ -1,8 +1,9 @@
-#include "error.h"
+#include "error.hpp"
 
-#include <assert.h>
+#include <cassert>
 
-namespace cmkr::error {
+namespace cmkr {
+namespace error {
 
 Status::Status(Code ec) noexcept : ec_(ec) {}
 
@@ -10,13 +11,15 @@ Status::operator int() const noexcept { return static_cast<int>(ec_); }
 
 Status::Code Status::code() const noexcept { return ec_; }
 
-} // namespace cmkr::error
+} // namespace error
+} // namespace cmkr
 
-const char *err_string[] = {
-    "Success", "Runtime error", "Initialization error", "CMake generation error", "Build error",
+// strings for cmkr::error::Status::Code
+static const char *err_string[] = {
+    "Success", "Runtime error", "Initialization error", "CMake generation error", "Build error", "Clean error", "Install error",
 };
 
 const char *cmkr_error_status(int i) {
-    assert(i >= 0 && i < 5);
+    assert(i >= 0 && i < (sizeof(err_string) / sizeof(*(err_string))));
     return err_string[i];
-}
+}

src/gen.cpp

@@ -1,400 +0,0 @@
-#include "gen.h"
-#include "cmake.hpp"
-#include "error.h"
-#include "literals.h"
-
-#include <filesystem>
-#include <fstream>
-#include <new>
-#include <sstream>
-#include <stdexcept>
-#include <stdio.h>
-#include <string.h>
-#include <string>
-
-namespace fs = std::filesystem;
-
-namespace cmkr::gen {
-
-namespace detail {
-
-inline std::string to_upper(const std::string &str) {
-    std::string temp;
-    temp.reserve(str.size());
-    for (auto c : str) {
-        temp.push_back(::toupper(c));
-    }
-    return temp;
-}
-
-template <typename... Args>
-std::string format(const char *fmt, Args... args) {
-    auto sz = snprintf(nullptr, 0, fmt, args...) + 1;
-    char *buf = new char[sz];
-    int ret = snprintf(buf, sz, fmt, args...);
-    if (ret != sz - 1)
-        throw std::runtime_error("Error formatting string!");
-    std::string temp(buf, buf + sz - 1);
-    delete[] buf;
-    return temp;
-}
-
-std::vector<fs::path> expand_path(const fs::path &p) {
-    std::vector<fs::path> temp;
-    if (p.filename().stem().string() == "*") {
-        auto ext = p.extension();
-        for (const auto &f : fs::directory_iterator(p.parent_path())) {
-            if (f.path().extension() == ext) {
-                temp.push_back(f.path());
-            }
-        }
-    } else {
-        temp.push_back(p);
-    }
-    return temp;
-}
-
-} // namespace detail
-
-int generate_project(const char *str) {
-    fs::create_directory("src");
-    fs::create_directory("include");
-    const auto dir_name = fs::current_path().stem().string();
-    std::string mainbuf;
-    std::string installed;
-    std::string target;
-    std::string dest;
-    if (!strcmp(str, "exe")) {
-        mainbuf = detail::format(hello_world, "main");
-        installed = "targets";
-        target = dir_name;
-        dest = "bin";
-    } else if (!strcmp(str, "static") || !strcmp(str, "shared") || !strcmp(str, "lib")) {
-        mainbuf = detail::format(hello_world, "test");
-        installed = "targets";
-        target = dir_name;
-        dest = "lib";
-    } else if (!strcmp(str, "interface")) {
-        installed = "files";
-        target = "include/*.h";
-        dest = "include/" + dir_name;
-    } else {
-        throw std::runtime_error(
-            "Unknown project type. Types are exe, lib, shared, static, interface!");
-    }
-
-    const auto tomlbuf = detail::format(cmake_toml, dir_name.c_str(), dir_name.c_str(), str,
-                                        installed.c_str(), target.c_str(), dest.c_str());
-
-    if (strcmp(str, "interface")) {
-        std::ofstream ofs("src/main.cpp");
-        if (ofs.is_open()) {
-            ofs << mainbuf;
-        }
-        ofs.flush();
-        ofs.close();
-    }
-
-    std::ofstream ofs2("cmake.toml");
-    if (ofs2.is_open()) {
-        ofs2 << tomlbuf;
-    }
-    ofs2.flush();
-    ofs2.close();
-
-    return 0;
-}
-
-int generate_cmake(const char *path) {
-    if (fs::exists(fs::path(path) / "cmake.toml")) {
-        cmake::CMake cmake(path, false);
-        std::stringstream ss;
-        ss << "# This file was generated automatically by cmkr.\n\n";
-
-        if (!cmake.cmake_version.empty()) {
-            ss << "cmake_minimum_required(VERSION " << cmake.cmake_version << ")\n\n";
-
-            ss << "set(CMAKE_EXPORT_COMPILE_COMMANDS ON)\n\n";
-        }
-
-        if (!cmake.cppflags.empty()) {
-            ss << "set(CMAKE_CXX_FLAGS ${CMAKE_CXX_FLAGS} \"";
-            for (const auto &flag : cmake.cppflags) {
-                ss << flag << " ";
-            }
-            ss << "\")\n\n";
-        }
-
-        if (!cmake.cflags.empty()) {
-            ss << "set(CMAKE_C_FLAGS ${CMAKE_C_FLAGS} \"";
-            for (const auto &flag : cmake.cflags) {
-                ss << flag << " ";
-            }
-            ss << "\")\n\n";
-        }
-
-        if (!cmake.linkflags.empty()) {
-            ss << "set(CMAKE_EXE_LINKER_FLAGS ${CMAKE_EXE_LINKER_FLAGS} \"";
-            for (const auto &flag : cmake.linkflags) {
-                ss << flag << " ";
-            }
-            ss << "\")\n\n";
-        }
-
-        if (!cmake.subdirs.empty()) {
-            for (const auto &dir : cmake.subdirs) {
-                ss << "add_subdirectory(" << dir << ")\n";
-            }
-            ss << "\n\n";
-        }
-
-        if (!cmake.proj_name.empty() && !cmake.proj_version.empty()) {
-            ss << "set(" << cmake.proj_name << "_PROJECT_VERSION " << cmake.proj_version << ")\n"
-               << "project(" << cmake.proj_name << " VERSION "
-               << "${" << cmake.proj_name << "_PROJECT_VERSION}"
-               << ")\n\n";
-        }
-
-        if (!cmake.packages.empty()) {
-            for (const auto &dep : cmake.packages) {
-                ss << "find_package(" << dep.name << " ";
-                if (dep.version != "*") {
-                    ss << dep.version << " ";
-                }
-                if (dep.required) {
-                    ss << "REQUIRED ";
-                }
-                if (!dep.components.empty()) {
-                    ss << "COMPONENTS ";
-                    for (const auto &comp : dep.components) {
-                        ss << comp << " ";
-                    }
-                }
-                ss << ")\n\n";
-            }
-        }
-
-        if (!cmake.contents.empty()) {
-            ss << "include(FetchContent)\n\n";
-            for (const auto &dep : cmake.contents) {
-                ss << "FetchContent_Declare(\n\t" << dep.first << "\n";
-                for (const auto &arg : dep.second) {
-                    std::string first_arg = arg.first;
-                    if (first_arg == "git") {
-                        first_arg = "GIT_REPOSITORY";
-                    } else if (first_arg == "tag") {
-                        first_arg = "GIT_TAG";
-                    } else if (first_arg == "svn") {
-                        first_arg = "SVN_REPOSITORY";
-                    } else if (first_arg == "rev") {
-                        first_arg = "SVN_REVISION";
-                    } else if (first_arg == "url") {
-                        first_arg = "URL";
-                    } else if (first_arg == "hash") {
-                        first_arg = "URL_HASH";
-                    } else {
-                        // don't change arg
-                    }
-                    ss << "\t" << first_arg << " " << arg.second << "\n";
-                }
-                ss << "\t)\n\n"
-                   << "FetchContent_MakeAvailable(" << dep.first << ")\n\n";
-            }
-        }
-
-        if (!cmake.options.empty()) {
-            for (const auto &opt : cmake.options) {
-                ss << "option(" << opt.name << " \"" << opt.comment << "\" "
-                   << (opt.val ? "ON" : "OFF") << ")\n\n";
-            }
-        }
-
-        if (!cmake.settings.empty()) {
-            for (const auto &set : cmake.settings) {
-                std::string set_val;
-                if (set.val.index() == 1) {
-                    set_val = std::get<std::string>(set.val);
-                } else {
-                    set_val = std::get<bool>(set.val) ? "ON" : "OFF";
-                }
-                ss << "set(" << set.name << " " << set_val;;
-                if (set.cache) {
-                    std::string typ;
-                    if (set.val.index() == 1) typ = "STRING"; else typ = "BOOL";
-                    ss << " CACHE " << typ << " \"" << set.comment <<  "\"";
-                    if (set.force) ss << " FORCE";
-                }
-                   ss << ")\n\n";
-            }
-        }
-
-        if (!cmake.binaries.empty()) {
-            for (const auto &bin : cmake.binaries) {
-                std::string bin_type;
-                std::string add_command;
-                if (bin.type == "exe") {
-                    bin_type = "";
-                    add_command = "add_executable";
-                } else if (bin.type == "shared" || bin.type == "static" ||
-                           bin.type == "interface") {
-                    bin_type = detail::to_upper(bin.type);
-                    add_command = "add_library";
-                } else if (bin.type == "lib") {
-                    bin_type = "";
-                    add_command = "add_library";
-                } else {
-                    throw std::runtime_error(
-                        "Unknown binary type! Supported types are exe, shared and static");
-                }
-
-                if (!bin.sources.empty()) {
-                    ss << "set(" << detail::to_upper(bin.name) << "_SOURCES\n";
-                    for (const auto &src : bin.sources) {
-                        auto path = fs::path(src);
-                        auto expanded = detail::expand_path(path);
-                        for (const auto &f : expanded) {
-                            ss << "\t" << f << "\n";
-                        }
-                    }
-                    ss << "\t)\n\n";
-                }
-
-                ss << add_command << "(" << bin.name << " " << bin_type;
-
-                if (!bin.sources.empty()) {
-                    ss << " ${" << detail::to_upper(bin.name) << "_SOURCES})\n\n";
-                } else {
-                    ss << ")\n\n";
-                }
-
-                if (!bin.alias.empty()) {
-                    ss << "add_library(" << bin.alias << " ALIAS " << bin.name << ")\n\n";
-                }
-
-                if (!bin.include_dirs.empty()) {
-                    ss << "target_include_directories(" << bin.name << " PUBLIC\n\t";
-                    for (const auto &inc : bin.include_dirs) {
-                        ss << fs::path(inc) << "\n\t";
-                    }
-                    ss << ")\n\n";
-                }
-
-                if (!bin.link_libs.empty()) {
-                    ss << "target_link_libraries(" << bin.name << " PUBLIC\n\t";
-                    for (const auto &l : bin.link_libs) {
-                        ss << l << "\n\t";
-                    }
-                    ss << ")\n\n";
-                }
-
-                if (!bin.features.empty()) {
-                    ss << "target_compile_features(" << bin.name << " PUBLIC\n\t";
-                    for (const auto &feat : bin.features) {
-                        ss << feat << "\n\t";
-                    }
-                    ss << ")\n\n";
-                }
-
-                if (!bin.defines.empty()) {
-                    ss << "target_add_definitions(" << bin.name << " PUBLIC\n\t";
-                    for (const auto &def : bin.defines) {
-                        ss << def << "\n\t";
-                    }
-                    ss << ")\n\n";
-                }
-
-                if (!bin.properties.empty()) {
-                    ss << "set_target_properties(" << bin.name << " PROPERTIES\n";
-                    for (const auto &prop : bin.properties) {
-                        ss << "\t" << prop.first << " " << prop.second << "\n";
-                    }
-                    ss << "\t)\n\n";
-                }
-            }
-        }
-
-        if (!cmake.tests.empty()) {
-            ss << "include(CTest)\n"
-               << "enable_testing()\n\n";
-            for (const auto &test : cmake.tests) {
-                ss << "add_test(NAME " << test.name << " COMMAND " << test.cmd;
-                if (!test.args.empty()) {
-                    for (const auto &arg : test.args) {
-                        ss << " " << arg;
-                    }
-                }
-                ss << ")\n\n";
-            }
-        }
-
-        if (!cmake.installs.empty()) {
-            for (const auto &inst : cmake.installs) {
-                ss << "install(\n";
-                if (!inst.targets.empty()) {
-                    ss << "\tTARGETS ";
-                    for (const auto &target : inst.targets) {
-                        ss << target << " ";
-                    }
-                }
-                if (!inst.dirs.empty()) {
-                    ss << "\tDIRS ";
-                    for (const auto &dir : inst.dirs) {
-                        ss << dir << " ";
-                    }
-                }
-                if (!inst.files.empty()) {
-                    ss << "\tFILES ";
-                    for (const auto &file : inst.files) {
-                        auto path = detail::expand_path(fs::path(file));
-                        for (const auto &f : path)
-                            ss << f << " ";
-                    }
-                }
-                if (!inst.configs.empty()) {
-                    ss << "\tCONFIGURATIONS";
-                    for (const auto &conf : inst.configs) {
-                        ss << conf << " ";
-                    }
-                }
-                ss << "\n\tDESTINATION " << inst.destination << "\n\t)\n\n";
-            }
-        }
-
-        ss << "\n\n";
-        // printf("%s\n", ss.str().c_str());
-
-        std::ofstream ofs(fs::path(path) / "CMakeLists.txt");
-        if (ofs.is_open()) {
-            ofs << ss.rdbuf();
-        }
-        ofs.flush();
-        ofs.close();
-
-        for (const auto &sub : cmake.subdirs) {
-            if (fs::exists(fs::path(sub) / "cmake.toml"))
-                generate_cmake(sub.c_str());
-        }
-    }
-    return 0;
-}
-} // namespace cmkr::gen
-
-int cmkr_gen_generate_project(const char *typ) {
-    try {
-        return cmkr::gen::generate_project(typ);
-    } catch (const std::system_error &e) {
-        return e.code().value();
-    } catch (...) {
-        return cmkr::error::Status(cmkr::error::Status::Code::InitError);
-    }
-}
-
-int cmkr_gen_generate_cmake(const char *path) {
-    try {
-        return cmkr::gen::generate_cmake(path);
-    } catch (const std::system_error &e) {
-        return e.code().value();
-    } catch (...) {
-        return cmkr::error::Status(cmkr::error::Status::Code::GenerationError);
-    }
-}

src/help.cpp

@@ -1,23 +1,26 @@
-#include "help.h"
+#include "help.hpp"
+#include <resources/version.hpp>
 
-namespace cmkr::help {
+namespace cmkr {
+namespace help {
 
-const char *version() noexcept { return "cmkr version 0.1.2"; }
+const char *version() noexcept { return "cmkr version " CMKR_VERSION; }
 
 const char *message() noexcept {
     return R"lit(
 Usage: cmkr [arguments]
 arguments:
-    init     [exe|lib|shared|static|interface]    Starts a new project in the same directory.
-    gen                                           Generates CMakeLists.txt file.
-    build    <extra cmake args>                   Run cmake and build.
-    install                                       Run cmake --install. Needs admin privileges.
-    clean                                         Clean the build directory.
-    help                                          Show help.
-    version                                       Current cmkr version.
-            )lit";
+    init    [executable|library|shared|static|interface] Starts a new project in the same directory.
+    gen                                                  Generates CMakeLists.txt file.
+    build   <extra cmake args>                           Run cmake and build.
+    install                                              Run cmake --install. Needs admin privileges.
+    clean                                                Clean the build directory.
+    help                                                 Show help.
+    version                                              Current cmkr version.
+)lit";
 }
-} // namespace cmkr::help
+} // namespace help
+} // namespace cmkr
 
 const char *cmkr_help_version(void) { return cmkr::help::version(); }
 

src/main.cpp

@@ -1,13 +1,21 @@
-#include "args.h"
+#include "arguments.hpp"
 
+#include <cstdio>
+#include <cstdlib>
+#include <cstring>
 #include <stdexcept>
-#include <stdio.h>
-#include <stdlib.h>
 
 int main(int argc, char **argv) try {
     auto output = cmkr::args::handle_args(argc, argv);
-    return fprintf(stdout, "%s\n", output) < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
+    auto format = "[cmkr] %s\n";
+    if (strchr(output, '\n') != nullptr)
+        format = "%s\n";
+    (void)fprintf(stderr, format, output);
+    return EXIT_SUCCESS;
 } catch (const std::exception &e) {
-    (void)fprintf(stderr, "%s\n", e.what());
+    auto format = "[cmkr] error: %s\n";
+    if (strchr(e.what(), '\n') != nullptr)
+        format = "%s\n";
+    (void)fprintf(stderr, format, e.what());
     return EXIT_FAILURE;
 }

src/project_parser.cpp

@@ -0,0 +1,514 @@
+#include "project_parser.hpp"
+
+#include "enum_helper.hpp"
+#include "fs.hpp"
+#include <deque>
+#include <stdexcept>
+#include <toml.hpp>
+#include <tsl/ordered_map.h>
+
+template <>
+const char *enumStrings<cmkr::parser::TargetType>::data[] = {"executable", "library", "shared", "static", "interface", "custom", "object"};
+
+namespace cmkr {
+namespace parser {
+
+using TomlBasicValue = toml::basic_value<toml::discard_comments, tsl::ordered_map, std::vector>;
+
+template <typename EnumType>
+static EnumType to_enum(const std::string &str, const std::string &help_name) {
+    EnumType value;
+    try {
+        std::stringstream ss(str);
+        ss >> enumFromString(value);
+    } catch (std::invalid_argument &) {
+        std::string supported;
+        for (const auto &s : enumStrings<EnumType>::data) {
+            if (!supported.empty()) {
+                supported += ", ";
+            }
+            supported += s;
+        }
+        throw std::runtime_error("Unknown " + help_name + "'" + str + "'! Supported types are: " + supported);
+    }
+    return value;
+}
+
+static std::string format_key_error(const std::string &error, const toml::key &ky, const TomlBasicValue &value) {
+    auto loc = value.location();
+    auto line_number_str = std::to_string(loc.line());
+    auto line_width = line_number_str.length();
+    auto line_str = loc.line_str();
+
+    std::ostringstream oss;
+    oss << "[error] " << error << '\n';
+    oss << " --> " << loc.file_name() << '\n';
+
+    oss << std::string(line_width + 2, ' ') << "|\n";
+    oss << ' ' << line_number_str << " | " << line_str << '\n';
+
+    oss << std::string(line_width + 2, ' ') << '|';
+    auto key_start = line_str.substr(0, loc.column() - 1).rfind(ky);
+    if (key_start == std::string::npos) {
+        key_start = line_str.find(ky);
+    }
+    if (key_start != std::string::npos) {
+        oss << std::string(key_start + 1, ' ') << std::string(ky.length(), '~');
+    }
+    oss << '\n';
+
+    return oss.str();
+}
+
+class TomlChecker {
+    const TomlBasicValue &m_v;
+    tsl::ordered_map<toml::key, bool> m_visited;
+    tsl::ordered_map<toml::key, bool> m_conditionVisited;
+
+  public:
+    TomlChecker(const TomlBasicValue &v, const toml::key &ky) : m_v(toml::find(v, ky)) {}
+    TomlChecker(const TomlBasicValue &v) : m_v(v) {}
+    TomlChecker(const TomlChecker &) = delete;
+    TomlChecker(TomlChecker &&) = delete;
+
+    template <typename T>
+    void optional(const toml::key &ky, Condition<T> &destination) {
+        // TODO: this algorithm in O(n) over the amount of keys, kinda bad
+        const auto &table = m_v.as_table();
+        for (const auto &itr : table) {
+            const auto &key = itr.first;
+            const auto &value = itr.second;
+            if (value.is_table()) {
+                if (value.contains(ky)) {
+                    destination[key] = toml::find<T>(value, ky);
+                }
+            } else if (key == ky) {
+                destination[""] = toml::find<T>(m_v, ky);
+            }
+        }
+
+        // Handle visiting logic
+        for (const auto &itr : destination) {
+            if (!itr.first.empty()) {
+                m_conditionVisited.emplace(itr.first, true);
+            }
+        }
+        visit(ky);
+    }
+
+    template <typename T>
+    void optional(const toml::key &ky, T &destination) {
+        // TODO: this currently doesn't allow you to get an optional map<string, X>
+        if (m_v.contains(ky)) {
+            destination = toml::find<T>(m_v, ky);
+        }
+        visit(ky);
+    }
+
+    template <typename T>
+    void required(const toml::key &ky, T &destination) {
+        destination = toml::find<T>(m_v, ky);
+        visit(ky);
+    }
+
+    bool contains(const toml::key &ky) {
+        visit(ky);
+        return m_v.contains(ky);
+    }
+
+    const TomlBasicValue &find(const toml::key &ky) {
+        visit(ky);
+        return toml::find(m_v, ky);
+    }
+
+    void visit(const toml::key &ky) { m_visited.emplace(ky, true); }
+
+    void check(const tsl::ordered_map<std::string, std::string> &conditions) const {
+        for (const auto &itr : m_v.as_table()) {
+            const auto &ky = itr.first;
+            if (m_conditionVisited.contains(ky)) {
+                if (!conditions.contains(ky)) {
+                    throw std::runtime_error(format_key_error("Unknown condition '" + ky + "'", ky, itr.second));
+                }
+
+                for (const auto &jtr : itr.second.as_table()) {
+                    if (!m_visited.contains(jtr.first)) {
+                        throw std::runtime_error(format_key_error("Unknown key '" + jtr.first + "'", jtr.first, jtr.second));
+                    }
+                }
+            } else if (!m_visited.contains(ky)) {
+                if (itr.second.is_table()) {
+                    for (const auto &jtr : itr.second.as_table()) {
+                        if (!m_visited.contains(jtr.first)) {
+                            throw std::runtime_error(format_key_error("Unknown key '" + jtr.first + "'", jtr.first, jtr.second));
+                        }
+                    }
+                }
+                throw std::runtime_error(format_key_error("Unknown key '" + ky + "'", ky, itr.second));
+            }
+        }
+    }
+};
+
+class TomlCheckerRoot {
+    std::deque<TomlChecker> m_checkers;
+    bool m_checked = false;
+
+  public:
+    TomlCheckerRoot() = default;
+    TomlCheckerRoot(const TomlCheckerRoot &) = delete;
+    TomlCheckerRoot(TomlCheckerRoot &&) = delete;
+
+    TomlChecker &create(const TomlBasicValue &v) {
+        m_checkers.emplace_back(v);
+        return m_checkers.back();
+    }
+
+    TomlChecker &create(const TomlBasicValue &v, const toml::key &ky) {
+        m_checkers.emplace_back(v, ky);
+        return m_checkers.back();
+    }
+
+    void check(const tsl::ordered_map<std::string, std::string> &conditions) {
+        for (const auto &checker : m_checkers) {
+            checker.check(conditions);
+        }
+    }
+};
+
+Project::Project(const Project *parent, const std::string &path, bool build) {
+    const auto toml_path = fs::path(path) / "cmake.toml";
+    if (!fs::exists(toml_path)) {
+        throw std::runtime_error("No cmake.toml was found!");
+    }
+    const auto toml = toml::parse<toml::discard_comments, tsl::ordered_map, std::vector>(toml_path.string());
+
+    TomlCheckerRoot checker;
+
+    if (toml.contains("cmake")) {
+        auto &cmake = checker.create(toml, "cmake");
+
+        cmake.required("version", cmake_version);
+
+        if (cmake.contains("bin-dir")) {
+            throw std::runtime_error("bin-dir has been renamed to build-dir");
+        }
+
+        cmake.optional("build-dir", build_dir);
+        cmake.optional("generator", generator);
+        cmake.optional("config", config);
+        cmake.optional("arguments", gen_args);
+        cmake.optional("allow-in-tree", allow_in_tree);
+
+        if (cmake.contains("cmkr-include")) {
+            const auto &cmkr_include_kv = cmake.find("cmkr-include");
+            if (cmkr_include_kv.is_string()) {
+                cmkr_include = cmkr_include_kv.as_string();
+            } else {
+                // Allow disabling this feature with cmkr-include = false
+                cmkr_include = "";
+            }
+        }
+
+        cmake.optional("cpp-flags", cppflags);
+        cmake.optional("c-flags", cflags);
+        cmake.optional("link-flags", linkflags);
+    }
+
+    // Skip the rest of the parsing when building
+    if (build) {
+        checker.check(conditions);
+        return;
+    }
+
+    // Reasonable default conditions (you can override these if you desire)
+    if (parent == nullptr) {
+        conditions["windows"] = R"cmake(WIN32)cmake";
+        conditions["macos"] = R"cmake(CMAKE_SYSTEM_NAME MATCHES "Darwin")cmake";
+        conditions["unix"] = R"cmake(UNIX)cmake";
+        conditions["bsd"] = R"cmake(CMAKE_SYSTEM_NAME MATCHES "BSD")cmake";
+        conditions["linux"] = conditions["lunix"] = R"cmake(CMAKE_SYSTEM_NAME MATCHES "Linux")cmake";
+        conditions["gcc"] = R"cmake(CMAKE_CXX_COMPILER_ID STREQUAL "GNU" OR CMAKE_C_COMPILER_ID STREQUAL "GNU")cmake";
+        conditions["clang"] = R"cmake(CMAKE_CXX_COMPILER_ID MATCHES "Clang" OR CMAKE_C_COMPILER_ID MATCHES "Clang")cmake";
+        conditions["msvc"] = R"cmake(MSVC)cmake";
+    } else {
+        conditions = parent->conditions;
+    }
+
+    if (toml.contains("conditions")) {
+        auto conds = toml::find<decltype(conditions)>(toml, "conditions");
+        for (const auto &cond : conds) {
+            conditions[cond.first] = cond.second;
+        }
+    }
+
+    if (toml.contains("project")) {
+        auto &project = checker.create(toml, "project");
+        project.required("name", project_name);
+        project.optional("version", project_version);
+        project.optional("description", project_description);
+        project.optional("languages", project_languages);
+        project.optional("cmake-before", cmake_before);
+        project.optional("cmake-after", cmake_after);
+        project.optional("include-before", include_before);
+        project.optional("include-after", include_after);
+        project.optional("subdirs", project_subdirs);
+    }
+
+    if (toml.contains("subdir")) {
+        const auto &subs = toml::find(toml, "subdir").as_table();
+        for (const auto &itr : subs) {
+            Subdir subdir;
+            subdir.name = itr.first;
+
+            auto &sub = checker.create(itr.second);
+            sub.optional("condition", subdir.condition);
+            sub.optional("cmake-before", subdir.cmake_before);
+            sub.optional("cmake-after", subdir.cmake_after);
+            sub.optional("include-before", subdir.include_before);
+            sub.optional("include-after", subdir.include_after);
+
+            subdirs.push_back(subdir);
+        }
+    }
+
+    if (toml.contains("settings")) {
+        using set_map = tsl::ordered_map<std::string, TomlBasicValue>;
+        const auto &sets = toml::find<set_map>(toml, "settings");
+        for (const auto &itr : sets) {
+            Setting s;
+            s.name = itr.first;
+            const auto &value = itr.second;
+            if (value.is_boolean()) {
+                s.val = value.as_boolean();
+            } else if (value.is_string()) {
+                s.val = value.as_string();
+            } else {
+                auto &setting = checker.create(value);
+                setting.optional("comment", s.comment);
+                if (setting.contains("value")) {
+                    const auto &v = setting.find("value");
+                    if (v.is_boolean()) {
+                        s.val = v.as_boolean();
+                    } else {
+                        s.val = v.as_string();
+                    }
+                }
+                setting.optional("cache", s.cache);
+                setting.optional("force", s.force);
+            }
+            settings.push_back(s);
+        }
+    }
+
+    if (toml.contains("options")) {
+        using opts_map = tsl::ordered_map<std::string, TomlBasicValue>;
+        const auto &opts = toml::find<opts_map>(toml, "options");
+        for (const auto &itr : opts) {
+            Option o;
+            o.name = itr.first;
+            const auto &value = itr.second;
+            if (value.is_boolean()) {
+                o.val = value.as_boolean();
+            } else {
+                auto &option = checker.create(value);
+                option.optional("comment", o.comment);
+                option.optional("value", o.val);
+            }
+            options.push_back(o);
+        }
+    }
+
+    if (toml.contains("find-package")) {
+        using pkg_map = tsl::ordered_map<std::string, TomlBasicValue>;
+        const auto &pkgs = toml::find<pkg_map>(toml, "find-package");
+        for (const auto &itr : pkgs) {
+            Package p;
+            p.name = itr.first;
+            const auto &value = itr.second;
+            if (itr.second.is_string()) {
+                p.version = itr.second.as_string();
+            } else {
+                auto &pkg = checker.create(value);
+                pkg.optional("version", p.version);
+                pkg.optional("required", p.required);
+                pkg.optional("config", p.config);
+                pkg.optional("components", p.components);
+            }
+            packages.push_back(p);
+        }
+    }
+
+    // TODO: perform checking here
+    if (toml.contains("fetch-content")) {
+        const auto &fc = toml::find(toml, "fetch-content").as_table();
+        for (const auto &itr : fc) {
+            Content content;
+            content.name = itr.first;
+            for (const auto &argItr : itr.second.as_table()) {
+                auto key = argItr.first;
+                if (key == "git") {
+                    key = "GIT_REPOSITORY";
+                } else if (key == "tag") {
+                    key = "GIT_TAG";
+                } else if (key == "svn") {
+                    key = "SVN_REPOSITORY";
+                } else if (key == "rev") {
+                    key = "SVN_REVISION";
+                } else if (key == "url") {
+                    key = "URL";
+                } else if (key == "hash") {
+                    key = "URL_HASH";
+                } else {
+                    // don't change arg
+                }
+                content.arguments.emplace(key, argItr.second.as_string());
+            }
+            contents.emplace_back(std::move(content));
+        }
+    }
+
+    if (toml.contains("bin")) {
+        throw std::runtime_error("[[bin]] has been renamed to [[target]]");
+    }
+
+    if (toml.contains("target")) {
+        const auto &ts = toml::find(toml, "target").as_table();
+
+        for (const auto &itr : ts) {
+            const auto &value = itr.second;
+
+            Target target;
+            target.name = itr.first;
+
+            auto &t = checker.create(value);
+            std::string type;
+            t.required("type", type);
+            target.type = to_enum<TargetType>(type, "target type");
+
+            t.optional("headers", target.headers);
+            t.optional("sources", target.sources);
+
+            t.optional("compile-definitions", target.compile_definitions);
+            t.optional("private-compile-definitions", target.private_compile_definitions);
+
+            t.optional("compile-features", target.compile_features);
+            t.optional("private-compile-features", target.private_compile_features);
+
+            t.optional("compile-options", target.compile_options);
+            t.optional("private-compile-options", target.private_compile_options);
+
+            t.optional("include-directories", target.include_directories);
+            t.optional("private-include-directories", target.private_include_directories);
+
+            t.optional("link-directories", target.link_directories);
+            t.optional("private-link-directories", target.private_link_directories);
+
+            t.optional("link-libraries", target.link_libraries);
+            t.optional("private-link-libraries", target.private_link_libraries);
+
+            t.optional("link-options", target.link_options);
+            t.optional("private-link-options", target.private_link_options);
+
+            t.optional("precompile-headers", target.precompile_headers);
+            t.optional("private-precompile-headers", target.private_precompile_headers);
+
+            if (!target.headers.empty()) {
+                auto &sources = target.sources.nth(0).value();
+                const auto &headers = target.headers.nth(0)->second;
+                sources.insert(sources.end(), headers.begin(), headers.end());
+            }
+
+            t.optional("condition", target.condition);
+            t.optional("alias", target.alias);
+
+            if (t.contains("properties")) {
+                auto store_property = [&target](const toml::key &k, const TomlBasicValue &v, const std::string &condition) {
+                    if (v.is_array()) {
+                        std::string property_list;
+                        for (const auto &list_val : v.as_array()) {
+                            if (!property_list.empty()) {
+                                property_list += ';';
+                            }
+                            property_list += list_val.as_string();
+                        }
+                        target.properties[condition][k] = property_list;
+                    } else if (v.is_boolean()) {
+                        target.properties[condition][k] = v.as_boolean() ? "ON" : "OFF";
+                    } else {
+                        target.properties[condition][k] = v.as_string();
+                    }
+                };
+
+                const auto &props = t.find("properties").as_table();
+                for (const auto &propKv : props) {
+                    const auto &k = propKv.first;
+                    const auto &v = propKv.second;
+                    if (v.is_table()) {
+                        for (const auto &condKv : v.as_table()) {
+                            store_property(condKv.first, condKv.second, k);
+                        }
+                    } else {
+                        store_property(k, v, "");
+                    }
+                }
+            }
+
+            t.optional("cmake-before", target.cmake_before);
+            t.optional("cmake-after", target.cmake_after);
+            t.optional("include-before", target.include_before);
+            t.optional("include-after", target.include_after);
+
+            targets.push_back(target);
+        }
+    }
+
+    if (toml.contains("test")) {
+        const auto &ts = toml::find(toml, "test").as_array();
+        for (const auto &value : ts) {
+            auto &t = checker.create(value);
+            Test test;
+            t.required("name", test.name);
+            t.optional("configurations", test.configurations);
+            t.optional("working-directory", test.working_directory);
+            t.required("command", test.command);
+            t.optional("arguments", test.arguments);
+            tests.push_back(test);
+        }
+    }
+
+    if (toml.contains("install")) {
+        const auto &is = toml::find(toml, "install").as_array();
+        for (const auto &value : is) {
+            auto &i = checker.create(value);
+            Install inst;
+            i.optional("targets", inst.targets);
+            i.optional("files", inst.files);
+            i.optional("dirs", inst.dirs);
+            i.optional("configs", inst.configs);
+            i.required("destination", inst.destination);
+            installs.push_back(inst);
+        }
+    }
+
+    if (toml.contains("vcpkg")) {
+        auto &v = checker.create(toml, "vcpkg");
+        v.optional("url", vcpkg.url);
+        v.optional("version", vcpkg.version);
+        v.required("packages", vcpkg.packages);
+    }
+
+    checker.check(conditions);
+}
+
+bool is_root_path(const std::string &path) {
+    const auto toml_path = fs::path(path) / "cmake.toml";
+    if (!fs::exists(toml_path)) {
+        return false;
+    }
+    const auto toml = toml::parse<toml::discard_comments, tsl::ordered_map, std::vector>(toml_path.string());
+    return toml.contains("project");
+}
+
+} // namespace parser
+} // namespace cmkr

tests/.gitignore

@@ -0,0 +1,3 @@
+# These will be generated by cmkr, so no point in tracking them
+**/CMakeLists.txt
+**/cmkr.cmake

tests/CMakeLists.txt

@@ -0,0 +1,80 @@
+# This file is automatically generated from cmake.toml - DO NOT EDIT
+# See https://github.com/build-cpp/cmkr for more information
+
+# Create a configure-time dependency on cmake.toml to improve IDE support
+if(CMKR_ROOT_PROJECT)
+	configure_file(cmake.toml cmake.toml COPYONLY)
+endif()
+
+enable_testing()
+
+add_test(
+	NAME
+		basic
+	WORKING_DIRECTORY
+		"${CMAKE_CURRENT_LIST_DIR}/basic"
+	COMMAND
+		$<TARGET_FILE:cmkr>
+		build
+)
+
+add_test(
+	NAME
+		interface
+	WORKING_DIRECTORY
+		"${CMAKE_CURRENT_LIST_DIR}/interface"
+	COMMAND
+		$<TARGET_FILE:cmkr>
+		build
+)
+
+add_test(
+	NAME
+		fetch-content
+	WORKING_DIRECTORY
+		"${CMAKE_CURRENT_LIST_DIR}/fetch-content"
+	COMMAND
+		$<TARGET_FILE:cmkr>
+		build
+)
+
+add_test(
+	NAME
+		conditions
+	WORKING_DIRECTORY
+		"${CMAKE_CURRENT_LIST_DIR}/conditions"
+	COMMAND
+		$<TARGET_FILE:cmkr>
+		build
+)
+
+add_test(
+	NAME
+		vcpkg
+	WORKING_DIRECTORY
+		"${CMAKE_CURRENT_LIST_DIR}/vcpkg"
+	COMMAND
+		$<TARGET_FILE:cmkr>
+		build
+)
+
+add_test(
+	NAME
+		cxx-standard
+	WORKING_DIRECTORY
+		"${CMAKE_CURRENT_LIST_DIR}/cxx-standard"
+	COMMAND
+		$<TARGET_FILE:cmkr>
+		build
+)
+
+add_test(
+	NAME
+		globbing
+	WORKING_DIRECTORY
+		"${CMAKE_CURRENT_LIST_DIR}/globbing"
+	COMMAND
+		$<TARGET_FILE:cmkr>
+		build
+)
+

tests/basic/cmake.toml

@@ -0,0 +1,11 @@
+# A minimal `cmake.toml` project:
+
+[project]
+name = "basic"
+description = "Minimal example"
+
+[target.basic]
+type = "executable"
+sources = ["src/basic.cpp"]
+
+# Declares an executable target called `basic` with `src/basic.cpp` as a source file. Equivalent to CMake's [add_executable](https://cmake.org/cmake/help/latest/command/add_executable.html)`(basic src/basic.cpp)`.

tests/basic/src/basic.cpp

@@ -0,0 +1,5 @@
+#include <cstdio>
+
+int main() {
+    puts("Hello from cmkr!");
+}

tests/cmake.toml

@@ -0,0 +1,41 @@
+[[test]]
+name = "basic"
+command = "$<TARGET_FILE:cmkr>"
+working-directory = "basic"
+arguments = ["build"]
+
+[[test]]
+name = "interface"
+command = "$<TARGET_FILE:cmkr>"
+working-directory = "interface"
+arguments = ["build"]
+
+[[test]]
+name = "fetch-content"
+command = "$<TARGET_FILE:cmkr>"
+working-directory = "fetch-content"
+arguments = ["build"]
+
+[[test]]
+name = "conditions"
+command = "$<TARGET_FILE:cmkr>"
+working-directory = "conditions"
+arguments = ["build"]
+
+[[test]]
+name = "vcpkg"
+command = "$<TARGET_FILE:cmkr>"
+working-directory = "vcpkg"
+arguments = ["build"]
+
+[[test]]
+name = "cxx-standard"
+command = "$<TARGET_FILE:cmkr>"
+working-directory = "cxx-standard"
+arguments = ["build"]
+
+[[test]]
+name = "globbing"
+command = "$<TARGET_FILE:cmkr>"
+working-directory = "globbing"
+arguments = ["build"]

tests/conditions/cmake.toml

@@ -0,0 +1,23 @@
+[project]
+name = "conditions"
+cmake-after = "set(CUSTOM ON)"
+
+[conditions]
+custom = "CUSTOM"
+
+[target.example]
+type = "executable"
+sources = ["src/main.cpp"]
+windows.sources = ["src/windows_specific.cpp"]
+cmake-after = "message(STATUS cmake-after)"
+windows.cmake-after = "message(STATUS win32-after)"
+macos.cmake-after = "message(STATUS macos-after)"
+linux.cmake-after = "message(STATUS linux-after)"
+unix.cmake-after = "message(STATUS unix-after)"
+custom.cmake-after = "message(STATUS custom-after)"
+
+[target.example.properties]
+AUTOMOC = false
+custom.OUTPUT_NAME = "example2"
+custom.AUTORCC = true
+AUTOGEN = "ON"

tests/conditions/src/main.cpp

@@ -0,0 +1 @@
+int main() { }

tests/conditions/src/win32.cpp

@@ -0,0 +1,3 @@
+#include <Windows.h>
+
+void foo() { }

tests/cxx-standard/cmake.toml

@@ -0,0 +1,12 @@
+# Require a C++11 compiler for the target `example`.
+
+[project]
+name = "cxx-standard"
+description = "Changing C++ standard"
+
+[target.example]
+type = "executable"
+sources = ["src/main.cpp"]
+compile-features = ["cxx_std_11"]
+
+# This is equivalent to CMake's [target_compile_features](https://cmake.org/cmake/help/latest/command/target_compile_features.html)`(example PRIVATE cxx_std_11)`. For more information on available C/C++ standards and features see [cmake-compile-features(7)](https://cmake.org/cmake/help/latest/manual/cmake-compile-features.7.html).

tests/cxx-standard/src/main.cpp

@@ -0,0 +1,8 @@
+#include <cstdio>
+#include <tuple>
+
+int main()
+{
+    auto tpl = std::make_tuple(1, 2);
+    printf("Hello from C++11 %d\n", std::get<0>(tpl));
+}

tests/fetch-content/cmake.toml

@@ -0,0 +1,15 @@
+# Downloads [fmt v7.1.3](https://fmt.dev/7.1.3/) from [GitHub](https://github.com) and links an `example` target to it:
+
+[project]
+name = "fetch-content"
+description = "Fetching from git"
+
+[fetch-content]
+fmt = { git = "https://github.com/fmtlib/fmt", tag = "7.1.3" }
+
+[target.example]
+type = "executable"
+sources = ["src/main.cpp"]
+link-libraries = ["fmt::fmt"]
+
+# This is equivalent to calling CMake's [FetchContent](https://cmake.org/cmake/help/latest/module/FetchContent.html).

tests/fetch-content/src/main.cpp

@@ -0,0 +1,6 @@
+#include <fmt/core.h>
+
+int main()
+{
+    fmt::print("Hello, world!\n");
+}

tests/globbing/cmake.toml

@@ -0,0 +1,18 @@
+[project]
+name = "globbing"
+description = "Globbing sources"
+
+# Recursively glob in the mylib/ folder
+[target.mylib]
+type = "static"
+alias = "mylib::mylib"
+sources = ["mylib/**.hpp", "mylib/**.cpp"]
+include-directories = ["mylib/include"]
+
+# Single-folder glob in example/src/
+[target.example]
+type = "executable"
+sources = ["example/src/*.cpp"]
+link-libraries = ["mylib::mylib"]
+
+# As you can see in the example above you can use `**.ext` to glob recursively and `*.ext` to glob non-recursively. This **does not** generate `file(GLOB ...)` commands, but instead globs when cmkr is run. Files are sorted to give deterministic results regardless of the platform used.

tests/globbing/example/src/main.cpp

@@ -0,0 +1,7 @@
+#include <iostream>
+#include <mylib/mylib.hpp>
+
+int main() {
+    std::cout << mylib::message() << std::endl;
+    return 0;
+}

tests/globbing/mylib/include/mylib/mylib.hpp

@@ -0,0 +1,8 @@
+#pragma once
+
+#include <string>
+
+namespace mylib
+{
+std::string message();
+}

tests/globbing/mylib/src/mylib/mylib.cpp

@@ -0,0 +1,6 @@
+#include <mylib/mylib.hpp>
+
+std::string mylib::message()
+{
+    return "cmkr is awesome!";
+}

tests/interface/cmake.toml

@@ -0,0 +1,12 @@
+[project]
+name = "interface"
+description = "Header-only library"
+
+[target.mylib]
+type = "interface"
+include-directories = ["include"]
+
+[target.example]
+type = "executable"
+sources = ["src/main.cpp"]
+link-libraries = ["mylib"]

tests/interface/include/mylib/mylib.hpp

@@ -0,0 +1,4 @@
+namespace mylib
+{
+static const char* version() { return "v1.0"; }
+} // namespace mylib

tests/interface/src/main.cpp

@@ -0,0 +1,8 @@
+#include <cstdio>
+
+#include "mylib/mylib.hpp"
+
+int main()
+{
+    printf("mylib version: %s\n", mylib::version())
+}

tests/vcpkg/cmake.toml

@@ -0,0 +1,21 @@
+# Downloads [fmt v7.1.3](https://fmt.dev/7.1.3/) using [vcpkg](https://vcpkg.io/) and links an `example` target to it:
+
+[project]
+name = "vcpkg"
+description = "Dependencies from vcpkg"
+
+# See https://github.com/microsoft/vcpkg/releases for vcpkg versions
+# See https://vcpkg.io/en/packages.html for available packages
+[vcpkg]
+version = "2021.05.12"
+packages = ["fmt"]
+
+[find-package]
+fmt = {}
+
+[target.example]
+type = "executable"
+sources = ["src/main.cpp"]
+link-libraries = ["fmt::fmt"]
+
+# The bootstrapping of vcpkg is fully automated and no user interaction is necessary. You can disable vcpkg by setting `CMKR_DISABLE_VCPKG=ON`.

tests/vcpkg/src/main.cpp

@@ -0,0 +1,6 @@
+#include <fmt/core.h>
+
+int main()
+{
+    fmt::print("Hello, world!\n");
+}

tests/vcpkg/vcpkg.json

@@ -0,0 +1,11 @@
+{
+  "$cmkr": "This file is automatically generated from cmake.toml - DO NOT EDIT",
+  "$cmkr-url": "https://github.com/build-cpp/cmkr",
+  "$schema": "https://raw.githubusercontent.com/microsoft/vcpkg/master/scripts/vcpkg.schema.json",
+  "dependencies": [
+    "fmt"
+  ],
+  "description": "Dependencies from vcpkg",
+  "name": "vcpkg",
+  "version-string": ""
+}

third_party/CMakeLists.txt

@@ -0,0 +1,22 @@
+# Third party dependencies (manually vendored to improve fetch speeds)
+
+# https://github.com/gulrak/filesystem (MIT)
+add_library(ghc_filesystem INTERFACE)
+target_include_directories(ghc_filesystem INTERFACE filesystem-1.5.2/include)
+
+# https://github.com/Tessil/ordered-map (MIT)
+add_library(ordered_map INTERFACE)
+target_include_directories(ordered_map INTERFACE ordered-map-1.0.0/include)
+target_compile_definitions(ordered_map INTERFACE NOMINMAX)
+
+# https://github.com/ToruNiina/toml11 (MIT)
+add_library(toml11 INTERFACE)
+target_include_directories(toml11 INTERFACE toml11-3.6.0)
+
+# https://github.com/mpark/variant (BSL-1.0)
+add_library(mpark_variant INTERFACE)
+target_include_directories(mpark_variant INTERFACE variant-1.4.0/include)
+
+# https://github.com/nlohmann/json (MIT)
+add_library(nlohmann_json INTERFACE)
+target_include_directories(nlohmann_json INTERFACE nlohmann-3.9.1/include)

third_party/filesystem-1.5.2/LICENSE

@@ -0,0 +1,19 @@
+Copyright (c) 2018, Steffen Schümann <s.schuemann@pobox.com>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

third_party/filesystem-1.5.2/include/ghc/fs_fwd.hpp

@@ -0,0 +1,38 @@
+//---------------------------------------------------------------------------------------
+//
+// ghc::filesystem - A C++17-like filesystem implementation for C++11/C++14
+//
+//---------------------------------------------------------------------------------------
+//
+// Copyright (c) 2018, Steffen Schümann <s.schuemann@pobox.com>
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//
+//---------------------------------------------------------------------------------------
+// fs_fwd.hpp - The forwarding header for the header/implementation seperated usage of
+//              ghc::filesystem.
+// This file can be include at any place, where ghc::filesystem api is needed while
+// not bleeding implementation details (e.g. system includes) into the global namespace,
+// as long as one cpp includes fs_impl.hpp to deliver the matching implementations.
+//---------------------------------------------------------------------------------------
+#ifndef GHC_FILESYSTEM_FWD_H
+#define GHC_FILESYSTEM_FWD_H
+#define GHC_FILESYSTEM_FWD
+#include <ghc/filesystem.hpp>
+#endif // GHC_FILESYSTEM_FWD_H

third_party/filesystem-1.5.2/include/ghc/fs_impl.hpp

@@ -0,0 +1,35 @@
+//---------------------------------------------------------------------------------------
+//
+// ghc::filesystem - A C++17-like filesystem implementation for C++11/C++14
+//
+//---------------------------------------------------------------------------------------
+//
+// Copyright (c) 2018, Steffen Schümann <s.schuemann@pobox.com>
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//
+//---------------------------------------------------------------------------------------
+// fs_impl.hpp - The implementation header for the header/implementation seperated usage of
+//               ghc::filesystem.
+// This file can be used to hide the implementation of ghc::filesystem into a single cpp.
+// The cpp has to include this before including fs_fwd.hpp directly or via a different
+// header to work.
+//---------------------------------------------------------------------------------------
+#define GHC_FILESYSTEM_IMPLEMENTATION
+#include <ghc/filesystem.hpp>

third_party/filesystem-1.5.2/include/ghc/fs_std.hpp

@@ -0,0 +1,56 @@
+//---------------------------------------------------------------------------------------
+//
+// ghc::filesystem - A C++17-like filesystem implementation for C++11/C++14
+//
+//---------------------------------------------------------------------------------------
+//
+// Copyright (c) 2018, Steffen Schümann <s.schuemann@pobox.com>
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//
+//---------------------------------------------------------------------------------------
+// fs_std.hpp - The dynamic switching header that includes std::filesystem if detected
+//              or ghc::filesystem if not, and makes the resulting API available in the
+//              namespace fs.
+//---------------------------------------------------------------------------------------
+#ifndef GHC_FILESYSTEM_STD_H
+#if ((defined(_MSVC_LANG) && _MSVC_LANG >= 201703L) || (defined(__cplusplus) && __cplusplus >= 201703L)) && defined(__has_include)
+#if __has_include(<filesystem>) && (!defined(__MAC_OS_X_VERSION_MIN_REQUIRED) || __MAC_OS_X_VERSION_MIN_REQUIRED >= 101500)
+#define GHC_USE_STD_FS
+#include <filesystem>
+namespace fs {
+using namespace std::filesystem;
+using ifstream = std::ifstream;
+using ofstream = std::ofstream;
+using fstream = std::fstream;
+}
+#endif
+#endif
+#ifndef GHC_USE_STD_FS
+//#define GHC_WIN_DISABLE_WSTRING_STORAGE_TYPE
+#include <ghc/filesystem.hpp>
+namespace fs {
+using namespace ghc::filesystem;
+using ifstream = ghc::filesystem::ifstream;
+using ofstream = ghc::filesystem::ofstream;
+using fstream = ghc::filesystem::fstream;
+} 
+#endif
+#endif // GHC_FILESYSTEM_STD_H
+

third_party/filesystem-1.5.2/include/ghc/fs_std_fwd.hpp

@@ -0,0 +1,60 @@
+//---------------------------------------------------------------------------------------
+//
+// ghc::filesystem - A C++17-like filesystem implementation for C++11/C++14
+//
+//---------------------------------------------------------------------------------------
+//
+// Copyright (c) 2018, Steffen Schümann <s.schuemann@pobox.com>
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//
+//---------------------------------------------------------------------------------------
+// fs_std_fwd.hpp - The forwarding header for the header/implementation seperated usage of
+//                  ghc::filesystem that uses std::filesystem if it detects it.
+// This file can be include at any place, where fs::filesystem api is needed while
+// not bleeding implementation details (e.g. system includes) into the global namespace,
+// as long as one cpp includes fs_std_impl.hpp to deliver the matching implementations.
+//---------------------------------------------------------------------------------------
+#ifndef GHC_FILESYSTEM_STD_FWD_H
+#define GHC_FILESYSTEM_STD_FWD_H
+#if ((defined(_MSVC_LANG) && _MSVC_LANG >= 201703L) || (defined(__cplusplus) && __cplusplus >= 201703L)) && defined(__has_include)
+#if __has_include(<filesystem>) && (!defined(__MAC_OS_X_VERSION_MIN_REQUIRED) || __MAC_OS_X_VERSION_MIN_REQUIRED >= 101500)
+#define GHC_USE_STD_FS
+#include <filesystem>
+namespace fs {
+using namespace std::filesystem;
+using ifstream = std::ifstream;
+using ofstream = std::ofstream;
+using fstream = std::fstream;
+}
+#endif
+#endif
+#ifndef GHC_USE_STD_FS
+//#define GHC_WIN_DISABLE_WSTRING_STORAGE_TYPE
+#define GHC_FILESYSTEM_FWD
+#include <ghc/filesystem.hpp>
+namespace fs {
+using namespace ghc::filesystem;
+using ifstream = ghc::filesystem::ifstream;
+using ofstream = ghc::filesystem::ofstream;
+using fstream = ghc::filesystem::fstream;
+} 
+#endif
+#endif // GHC_FILESYSTEM_STD_FWD_H
+

third_party/filesystem-1.5.2/include/ghc/fs_std_impl.hpp

@@ -0,0 +1,43 @@
+//---------------------------------------------------------------------------------------
+//
+// ghc::filesystem - A C++17-like filesystem implementation for C++11/C++14
+//
+//---------------------------------------------------------------------------------------
+//
+// Copyright (c) 2018, Steffen Schümann <s.schuemann@pobox.com>
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//
+//---------------------------------------------------------------------------------------
+// fs_std_impl.hpp - The implementation header for the header/implementation seperated usage of
+//                   ghc::filesystem that does nothing if std::filesystem is detected.
+// This file can be used to hide the implementation of ghc::filesystem into a single cpp.
+// The cpp has to include this before including fs_std_fwd.hpp directly or via a different
+// header to work.
+//---------------------------------------------------------------------------------------
+#if ((defined(_MSVC_LANG) && _MSVC_LANG >= 201703L) || (defined(__cplusplus) && __cplusplus >= 201703L)) && defined(__has_include)
+#if __has_include(<filesystem>) && (!defined(__MAC_OS_X_VERSION_MIN_REQUIRED) || __MAC_OS_X_VERSION_MIN_REQUIRED >= 101500)
+#define GHC_USE_STD_FS
+#endif
+#endif
+#ifndef GHC_USE_STD_FS
+//#define GHC_WIN_DISABLE_WSTRING_STORAGE_TYPE
+#define GHC_FILESYSTEM_IMPLEMENTATION
+#include <ghc/filesystem.hpp>
+#endif

third_party/nlohmann-3.9.1/LICENSE

@@ -0,0 +1,21 @@
+MIT License 
+
+Copyright (c) 2013-2021 Niels Lohmann
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

third_party/ordered-map-1.0.0/LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2017 Thibaut Goetghebuer-Planchon <tessil@gmx.com>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

third_party/ordered-map-1.0.0/include/tsl/ordered_map.h

@@ -0,0 +1,863 @@
+/**
+ * MIT License
+ * 
+ * Copyright (c) 2017 Thibaut Goetghebuer-Planchon <tessil@gmx.com>
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ * 
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+#ifndef TSL_ORDERED_MAP_H
+#define TSL_ORDERED_MAP_H
+
+
+#include <cstddef>
+#include <cstdint>
+#include <deque>
+#include <functional>
+#include <initializer_list>
+#include <memory>
+#include <type_traits>
+#include <utility>
+#include <vector>
+#include "ordered_hash.h"
+
+
+namespace tsl {
+
+
+/**
+ * Implementation of an hash map using open addressing with robin hood with backshift delete to resolve collisions.
+ * 
+ * The particularity of this hash map is that it remembers the order in which the elements were added and
+ * provide a way to access the structure which stores these values through the 'values_container()' method. 
+ * The used container is defined by ValueTypeContainer, by default a std::deque is used (grows faster) but
+ * a std::vector may be used. In this case the map provides a 'data()' method which give a direct access 
+ * to the memory used to store the values (which can be useful to communicate with C API's).
+ * 
+ * The Key and T must be copy constructible and/or move constructible. To use `unordered_erase` they both
+ * must be swappable.
+ * 
+ * The behaviour of the hash map is undefined if the destructor of Key or T throws an exception.
+ * 
+ * By default the maximum size of a map is limited to 2^32 - 1 values, if needed this can be changed through
+ * the IndexType template parameter. Using an `uint64_t` will raise this limit to 2^64 - 1 values but each
+ * bucket will use 16 bytes instead of 8 bytes in addition to the space needed to store the values.
+ * 
+ * Iterators invalidation:
+ *  - clear, operator=, reserve, rehash: always invalidate the iterators (also invalidate end()).
+ *  - insert, emplace, emplace_hint, operator[]: when a std::vector is used as ValueTypeContainer 
+ *                                               and if size() < capacity(), only end(). 
+ *                                               Otherwise all the iterators are invalidated if an insert occurs.
+ *  - erase, unordered_erase: when a std::vector is used as ValueTypeContainer invalidate the iterator of 
+ *                            the erased element and all the ones after the erased element (including end()). 
+ *                            Otherwise all the iterators are invalidated if an erase occurs.
+ */
+template<class Key, 
+         class T, 
+         class Hash = std::hash<Key>,
+         class KeyEqual = std::equal_to<Key>,
+         class Allocator = std::allocator<std::pair<Key, T>>,
+         class ValueTypeContainer = std::deque<std::pair<Key, T>, Allocator>,
+         class IndexType = std::uint_least32_t>
+class ordered_map {
+private:
+    template<typename U>
+    using has_is_transparent = tsl::detail_ordered_hash::has_is_transparent<U>;
+    
+    class KeySelect {
+    public:
+        using key_type = Key;
+        
+        const key_type& operator()(const std::pair<Key, T>& key_value) const noexcept {
+            return key_value.first;
+        }
+        
+        key_type& operator()(std::pair<Key, T>& key_value) noexcept {
+            return key_value.first;
+        }
+    };  
+    
+    class ValueSelect {
+    public:
+        using value_type = T;
+        
+        const value_type& operator()(const std::pair<Key, T>& key_value) const noexcept {
+            return key_value.second;
+        }
+        
+        value_type& operator()(std::pair<Key, T>& key_value) noexcept {
+            return key_value.second;
+        }
+    };
+    
+    using ht = detail_ordered_hash::ordered_hash<std::pair<Key, T>, KeySelect, ValueSelect,
+                                                 Hash, KeyEqual, Allocator, ValueTypeContainer, IndexType>;
+    
+public:
+    using key_type = typename ht::key_type;
+    using mapped_type = T;
+    using value_type = typename ht::value_type;
+    using size_type = typename ht::size_type;
+    using difference_type = typename ht::difference_type;
+    using hasher = typename ht::hasher;
+    using key_equal = typename ht::key_equal;
+    using allocator_type = typename ht::allocator_type;
+    using reference = typename ht::reference;
+    using const_reference = typename ht::const_reference;
+    using pointer = typename ht::pointer;
+    using const_pointer = typename ht::const_pointer;
+    using iterator = typename ht::iterator;
+    using const_iterator = typename ht::const_iterator;
+    using reverse_iterator = typename ht::reverse_iterator;
+    using const_reverse_iterator = typename ht::const_reverse_iterator;
+    
+    using values_container_type = typename ht::values_container_type;
+    
+    
+    /*
+     * Constructors
+     */
+    ordered_map(): ordered_map(ht::DEFAULT_INIT_BUCKETS_SIZE) {
+    }
+    
+    explicit ordered_map(size_type bucket_count, 
+                         const Hash& hash = Hash(),
+                         const KeyEqual& equal = KeyEqual(),
+                         const Allocator& alloc = Allocator()): 
+                     m_ht(bucket_count, hash, equal, alloc, ht::DEFAULT_MAX_LOAD_FACTOR)
+    {
+    }
+    
+    ordered_map(size_type bucket_count,
+                const Allocator& alloc): ordered_map(bucket_count, Hash(), KeyEqual(), alloc)
+    {
+    }
+    
+    ordered_map(size_type bucket_count,
+                const Hash& hash,
+                const Allocator& alloc): ordered_map(bucket_count, hash, KeyEqual(), alloc)
+    {
+    }
+    
+    explicit ordered_map(const Allocator& alloc): ordered_map(ht::DEFAULT_INIT_BUCKETS_SIZE, alloc) {
+    }
+    
+    template<class InputIt>
+    ordered_map(InputIt first, InputIt last,
+                size_type bucket_count = ht::DEFAULT_INIT_BUCKETS_SIZE,
+                const Hash& hash = Hash(),
+                const KeyEqual& equal = KeyEqual(),
+                const Allocator& alloc = Allocator()): ordered_map(bucket_count, hash, equal, alloc)
+    {
+        insert(first, last);
+    }
+    
+    template<class InputIt>
+    ordered_map(InputIt first, InputIt last,
+                size_type bucket_count,
+                const Allocator& alloc): ordered_map(first, last, bucket_count, Hash(), KeyEqual(), alloc)
+    {
+    }
+    
+    template<class InputIt>
+    ordered_map(InputIt first, InputIt last,
+                size_type bucket_count,
+                const Hash& hash,
+                const Allocator& alloc): ordered_map(first, last, bucket_count, hash, KeyEqual(), alloc)
+    {
+    }
+
+    ordered_map(std::initializer_list<value_type> init,
+                size_type bucket_count = ht::DEFAULT_INIT_BUCKETS_SIZE,
+                const Hash& hash = Hash(),
+                const KeyEqual& equal = KeyEqual(),
+                const Allocator& alloc = Allocator()): 
+            ordered_map(init.begin(), init.end(), bucket_count, hash, equal, alloc)
+    {
+    }
+
+    ordered_map(std::initializer_list<value_type> init,
+                size_type bucket_count,
+                const Allocator& alloc): 
+            ordered_map(init.begin(), init.end(), bucket_count, Hash(), KeyEqual(), alloc)
+    {
+    }
+
+    ordered_map(std::initializer_list<value_type> init,
+                size_type bucket_count,
+                const Hash& hash,
+                const Allocator& alloc): 
+            ordered_map(init.begin(), init.end(), bucket_count, hash, KeyEqual(), alloc)
+    {
+    }
+
+    
+    ordered_map& operator=(std::initializer_list<value_type> ilist) {
+        m_ht.clear();
+        
+        m_ht.reserve(ilist.size());
+        m_ht.insert(ilist.begin(), ilist.end());
+        
+        return *this;
+    }
+    
+    allocator_type get_allocator() const { return m_ht.get_allocator(); }
+    
+
+    
+    /*
+     * Iterators
+     */
+    iterator begin() noexcept { return m_ht.begin(); }
+    const_iterator begin() const noexcept { return m_ht.begin(); }
+    const_iterator cbegin() const noexcept { return m_ht.cbegin(); }
+    
+    iterator end() noexcept { return m_ht.end(); }
+    const_iterator end() const noexcept { return m_ht.end(); }
+    const_iterator cend() const noexcept { return m_ht.cend(); }
+    
+    reverse_iterator rbegin() noexcept { return m_ht.rbegin(); }
+    const_reverse_iterator rbegin() const noexcept { return m_ht.rbegin(); }
+    const_reverse_iterator rcbegin() const noexcept { return m_ht.rcbegin(); }
+    
+    reverse_iterator rend() noexcept { return m_ht.rend(); }
+    const_reverse_iterator rend() const noexcept { return m_ht.rend(); }
+    const_reverse_iterator rcend() const noexcept { return m_ht.rcend(); }
+    
+    
+    /*
+     * Capacity
+     */
+    bool empty() const noexcept { return m_ht.empty(); }
+    size_type size() const noexcept { return m_ht.size(); }
+    size_type max_size() const noexcept { return m_ht.max_size(); }
+    
+    /*
+     * Modifiers
+     */
+    void clear() noexcept { m_ht.clear(); }
+    
+    
+    
+    std::pair<iterator, bool> insert(const value_type& value) { return m_ht.insert(value); }
+        
+    template<class P, typename std::enable_if<std::is_constructible<value_type, P&&>::value>::type* = nullptr>
+    std::pair<iterator, bool> insert(P&& value) { return m_ht.emplace(std::forward<P>(value)); }
+    
+    std::pair<iterator, bool> insert(value_type&& value) { return m_ht.insert(std::move(value)); }
+    
+    
+    iterator insert(const_iterator hint, const value_type& value) {
+        return m_ht.insert_hint(hint, value);
+    }
+        
+    template<class P, typename std::enable_if<std::is_constructible<value_type, P&&>::value>::type* = nullptr>
+    iterator insert(const_iterator hint, P&& value) {
+        return m_ht.emplace_hint(hint, std::forward<P>(value));
+    }
+    
+    iterator insert(const_iterator hint, value_type&& value) { 
+        return m_ht.insert_hint(hint, std::move(value));
+    }
+    
+    
+    template<class InputIt>
+    void insert(InputIt first, InputIt last) { m_ht.insert(first, last); }
+    void insert(std::initializer_list<value_type> ilist) { m_ht.insert(ilist.begin(), ilist.end()); }
+
+    
+    
+    
+    template<class M>
+    std::pair<iterator, bool> insert_or_assign(const key_type& k, M&& obj) { 
+        return m_ht.insert_or_assign(k, std::forward<M>(obj)); 
+    }
+
+    template<class M>
+    std::pair<iterator, bool> insert_or_assign(key_type&& k, M&& obj) { 
+        return m_ht.insert_or_assign(std::move(k), std::forward<M>(obj)); 
+    }
+    
+    
+    template<class M>
+    iterator insert_or_assign(const_iterator hint, const key_type& k, M&& obj) {
+        return m_ht.insert_or_assign(hint, k, std::forward<M>(obj));
+    }
+    
+    template<class M>
+    iterator insert_or_assign(const_iterator hint, key_type&& k, M&& obj) {
+        return m_ht.insert_or_assign(hint, std::move(k), std::forward<M>(obj));
+    }
+    
+    /**
+     * Due to the way elements are stored, emplace will need to move or copy the key-value once.
+     * The method is equivalent to insert(value_type(std::forward<Args>(args)...));
+     * 
+     * Mainly here for compatibility with the std::unordered_map interface.
+     */
+    template<class... Args>
+    std::pair<iterator, bool> emplace(Args&&... args) { return m_ht.emplace(std::forward<Args>(args)...); }
+    
+    /**
+     * Due to the way elements are stored, emplace_hint will need to move or copy the key-value once.
+     * The method is equivalent to insert(hint, value_type(std::forward<Args>(args)...));
+     * 
+     * Mainly here for compatibility with the std::unordered_map interface.
+     */
+    template <class... Args>
+    iterator emplace_hint(const_iterator hint, Args&&... args) {
+        return m_ht.emplace_hint(hint, std::forward<Args>(args)...);
+    }
+    
+    
+    
+    
+    template<class... Args>
+    std::pair<iterator, bool> try_emplace(const key_type& k, Args&&... args) { 
+        return m_ht.try_emplace(k, std::forward<Args>(args)...);
+    }
+    
+    template<class... Args>
+    std::pair<iterator, bool> try_emplace(key_type&& k, Args&&... args) {
+        return m_ht.try_emplace(std::move(k), std::forward<Args>(args)...);
+    }
+    
+    template<class... Args>
+    iterator try_emplace(const_iterator hint, const key_type& k, Args&&... args) {
+        return m_ht.try_emplace_hint(hint, k, std::forward<Args>(args)...);
+    }
+    
+    template<class... Args>
+    iterator try_emplace(const_iterator hint, key_type&& k, Args&&... args) {
+        return m_ht.try_emplace_hint(hint, std::move(k), std::forward<Args>(args)...);
+    }
+    
+    
+    
+
+    /**
+     * When erasing an element, the insert order will be preserved and no holes will be present in the container
+     * returned by 'values_container()'. 
+     * 
+     * The method is in O(n), if the order is not important 'unordered_erase(...)' method is faster with an O(1)
+     * average complexity.
+     */
+    iterator erase(iterator pos) { return m_ht.erase(pos); }
+    
+    /**
+     * @copydoc erase(iterator pos)
+     */
+    iterator erase(const_iterator pos) { return m_ht.erase(pos); }
+    
+    /**
+     * @copydoc erase(iterator pos)
+     */    
+    iterator erase(const_iterator first, const_iterator last) { return m_ht.erase(first, last); }
+    
+    /**
+     * @copydoc erase(iterator pos)
+     */    
+    size_type erase(const key_type& key) { return m_ht.erase(key); }
+    
+    /**
+     * @copydoc erase(iterator pos)
+     * 
+     * Use the hash value 'precalculated_hash' instead of hashing the key. The hash value should be the same
+     * as hash_function()(key). Useful to speed-up the lookup to the value if you already have the hash.
+     */    
+    size_type erase(const key_type& key, std::size_t precalculated_hash) { 
+        return m_ht.erase(key, precalculated_hash); 
+    }
+    
+    /**
+     * @copydoc erase(iterator pos)
+     * 
+     * This overload only participates in the overload resolution if the typedef KeyEqual::is_transparent exists. 
+     * If so, K must be hashable and comparable to Key.
+     */
+    template<class K, class KE = KeyEqual, typename std::enable_if<has_is_transparent<KE>::value>::type* = nullptr> 
+    size_type erase(const K& key) { return m_ht.erase(key); }
+    
+    /**
+     * @copydoc erase(const key_type& key, std::size_t precalculated_hash)
+     * 
+     * This overload only participates in the overload resolution if the typedef KeyEqual::is_transparent exists. 
+     * If so, K must be hashable and comparable to Key.
+     */
+    template<class K, class KE = KeyEqual, typename std::enable_if<has_is_transparent<KE>::value>::type* = nullptr> 
+    size_type erase(const K& key, std::size_t precalculated_hash) { 
+        return m_ht.erase(key, precalculated_hash); 
+    }
+    
+    
+    
+    void swap(ordered_map& other) { other.m_ht.swap(m_ht); }
+    
+    /*
+     * Lookup
+     */
+    T& at(const Key& key) { return m_ht.at(key); }
+    
+    /**
+     * Use the hash value 'precalculated_hash' instead of hashing the key. The hash value should be the same
+     * as hash_function()(key). Useful to speed-up the lookup if you already have the hash.
+     */
+    T& at(const Key& key, std::size_t precalculated_hash) { return m_ht.at(key, precalculated_hash); }
+    
+    
+    const T& at(const Key& key) const { return m_ht.at(key); }
+    
+    /**
+     * @copydoc at(const Key& key, std::size_t precalculated_hash)
+     */
+    const T& at(const Key& key, std::size_t precalculated_hash) const { return m_ht.at(key, precalculated_hash); }
+    
+    
+    /**
+     * This overload only participates in the overload resolution if the typedef KeyEqual::is_transparent exists. 
+     * If so, K must be hashable and comparable to Key.
+     */
+    template<class K, class KE = KeyEqual, typename std::enable_if<has_is_transparent<KE>::value>::type* = nullptr> 
+    T& at(const K& key) { return m_ht.at(key); }
+    
+    /**
+     * @copydoc at(const K& key)
+     * 
+     * Use the hash value 'precalculated_hash' instead of hashing the key. The hash value should be the same
+     * as hash_function()(key). Useful to speed-up the lookup if you already have the hash.
+     */    
+    template<class K, class KE = KeyEqual, typename std::enable_if<has_is_transparent<KE>::value>::type* = nullptr> 
+    T& at(const K& key, std::size_t precalculated_hash) { return m_ht.at(key, precalculated_hash); }
+    
+    /**
+     * @copydoc at(const K& key)
+     */
+    template<class K, class KE = KeyEqual, typename std::enable_if<has_is_transparent<KE>::value>::type* = nullptr>     
+    const T& at(const K& key) const { return m_ht.at(key); }
+    
+    /**
+     * @copydoc at(const K& key, std::size_t precalculated_hash)
+     */    
+    template<class K, class KE = KeyEqual, typename std::enable_if<has_is_transparent<KE>::value>::type* = nullptr> 
+    const T& at(const K& key, std::size_t precalculated_hash) const { return m_ht.at(key, precalculated_hash); }
+    
+    
+    
+    T& operator[](const Key& key) { return m_ht[key]; }    
+    T& operator[](Key&& key) { return m_ht[std::move(key)]; }
+    
+    
+    
+    size_type count(const Key& key) const { return m_ht.count(key); }
+    
+    /**
+     * Use the hash value 'precalculated_hash' instead of hashing the key. The hash value should be the same
+     * as hash_function()(key). Useful to speed-up the lookup if you already have the hash.
+     */
+    size_type count(const Key& key, std::size_t precalculated_hash) const { 
+        return m_ht.count(key, precalculated_hash); 
+    }
+    
+    /**
+     * This overload only participates in the overload resolution if the typedef KeyEqual::is_transparent exists. 
+     * If so, K must be hashable and comparable to Key.
+     */
+    template<class K, class KE = KeyEqual, typename std::enable_if<has_is_transparent<KE>::value>::type* = nullptr>     
+    size_type count(const K& key) const { return m_ht.count(key); }
+    
+    /**
+     * @copydoc count(const K& key) const
+     * 
+     * Use the hash value 'precalculated_hash' instead of hashing the key. The hash value should be the same
+     * as hash_function()(key). Useful to speed-up the lookup if you already have the hash.
+     */     
+    template<class K, class KE = KeyEqual, typename std::enable_if<has_is_transparent<KE>::value>::type* = nullptr> 
+    size_type count(const K& key, std::size_t precalculated_hash) const { 
+        return m_ht.count(key, precalculated_hash);
+    }
+    
+    
+    
+    iterator find(const Key& key) { return m_ht.find(key); }
+    
+    /**
+     * Use the hash value 'precalculated_hash' instead of hashing the key. The hash value should be the same
+     * as hash_function()(key). Useful to speed-up the lookup if you already have the hash.
+     */
+    iterator find(const Key& key, std::size_t precalculated_hash) { return m_ht.find(key, precalculated_hash); }
+    
+    const_iterator find(const Key& key) const { return m_ht.find(key); }
+    
+    /**
+     * @copydoc find(const Key& key, std::size_t precalculated_hash)
+     */
+    const_iterator find(const Key& key, std::size_t precalculated_hash) const { 
+        return m_ht.find(key, precalculated_hash);
+    }
+    
+    /**
+     * This overload only participates in the overload resolution if the typedef KeyEqual::is_transparent exists. 
+     * If so, K must be hashable and comparable to Key.
+     */
+    template<class K, class KE = KeyEqual, typename std::enable_if<has_is_transparent<KE>::value>::type* = nullptr> 
+    iterator find(const K& key) { return m_ht.find(key); }
+    
+    /**
+     * @copydoc find(const K& key)
+     * 
+     * Use the hash value 'precalculated_hash' instead of hashing the key. The hash value should be the same
+     * as hash_function()(key). Useful to speed-up the lookup if you already have the hash.
+     */
+    template<class K, class KE = KeyEqual, typename std::enable_if<has_is_transparent<KE>::value>::type* = nullptr> 
+    iterator find(const K& key, std::size_t precalculated_hash) { return m_ht.find(key, precalculated_hash); }
+    
+    /**
+     * @copydoc find(const K& key)
+     */
+    template<class K, class KE = KeyEqual, typename std::enable_if<has_is_transparent<KE>::value>::type* = nullptr> 
+    const_iterator find(const K& key) const { return m_ht.find(key); }
+    
+    /**
+     * @copydoc find(const K& key)
+     * 
+     * Use the hash value 'precalculated_hash' instead of hashing the key. The hash value should be the same
+     * as hash_function()(key). Useful to speed-up the lookup if you already have the hash.
+     */
+    template<class K, class KE = KeyEqual, typename std::enable_if<has_is_transparent<KE>::value>::type* = nullptr> 
+    const_iterator find(const K& key, std::size_t precalculated_hash) const { 
+        return m_ht.find(key, precalculated_hash); 
+    }
+    
+    
+    
+    bool contains(const Key& key) const { return m_ht.contains(key); }
+    
+    /**
+     * Use the hash value 'precalculated_hash' instead of hashing the key. The hash value should be the same
+     * as hash_function()(key). Useful to speed-up the lookup if you already have the hash.
+     */
+    bool contains(const Key& key, std::size_t precalculated_hash) const { 
+        return m_ht.contains(key, precalculated_hash); 
+    }
+    
+    /**
+     * This overload only participates in the overload resolution if the typedef KeyEqual::is_transparent exists. 
+     * If so, K must be hashable and comparable to Key.
+     */
+    template<class K, class KE = KeyEqual, typename std::enable_if<has_is_transparent<KE>::value>::type* = nullptr> 
+    bool contains(const K& key) const { return m_ht.contains(key); }
+    
+    /**
+     * @copydoc contains(const K& key) const
+     * 
+     * Use the hash value 'precalculated_hash' instead of hashing the key. The hash value should be the same
+     * as hash_function()(key). Useful to speed-up the lookup if you already have the hash.
+     */
+    template<class K, class KE = KeyEqual, typename std::enable_if<has_is_transparent<KE>::value>::type* = nullptr> 
+    bool contains(const K& key, std::size_t precalculated_hash) const { 
+        return m_ht.contains(key, precalculated_hash); 
+    }
+    
+    
+    
+    std::pair<iterator, iterator> equal_range(const Key& key) { return m_ht.equal_range(key); }
+    
+    /**
+     * Use the hash value 'precalculated_hash' instead of hashing the key. The hash value should be the same
+     * as hash_function()(key). Useful to speed-up the lookup if you already have the hash.
+     */
+    std::pair<iterator, iterator> equal_range(const Key& key, std::size_t precalculated_hash) { 
+        return m_ht.equal_range(key, precalculated_hash); 
+    }
+    
+    std::pair<const_iterator, const_iterator> equal_range(const Key& key) const { return m_ht.equal_range(key); }
+    
+    /**
+     * @copydoc equal_range(const Key& key, std::size_t precalculated_hash)
+     */
+    std::pair<const_iterator, const_iterator> equal_range(const Key& key, std::size_t precalculated_hash) const { 
+        return m_ht.equal_range(key, precalculated_hash); 
+    }
+
+    /**
+     * This overload only participates in the overload resolution if the typedef KeyEqual::is_transparent exists. 
+     * If so, K must be hashable and comparable to Key.
+     */
+    template<class K, class KE = KeyEqual, typename std::enable_if<has_is_transparent<KE>::value>::type* = nullptr>     
+    std::pair<iterator, iterator> equal_range(const K& key) { return m_ht.equal_range(key); }
+    
+    /**
+     * @copydoc equal_range(const K& key)
+     * 
+     * Use the hash value 'precalculated_hash' instead of hashing the key. The hash value should be the same
+     * as hash_function()(key). Useful to speed-up the lookup if you already have the hash.
+     */
+    template<class K, class KE = KeyEqual, typename std::enable_if<has_is_transparent<KE>::value>::type* = nullptr> 
+    std::pair<iterator, iterator> equal_range(const K& key, std::size_t precalculated_hash) { 
+        return m_ht.equal_range(key, precalculated_hash); 
+    }
+    
+    /**
+     * @copydoc equal_range(const K& key)
+     */
+    template<class K, class KE = KeyEqual, typename std::enable_if<has_is_transparent<KE>::value>::type* = nullptr>     
+    std::pair<const_iterator, const_iterator> equal_range(const K& key) const { return m_ht.equal_range(key); }
+    
+    /**
+     * @copydoc equal_range(const K& key, std::size_t precalculated_hash)
+     */    
+    template<class K, class KE = KeyEqual, typename std::enable_if<has_is_transparent<KE>::value>::type* = nullptr> 
+    std::pair<const_iterator, const_iterator> equal_range(const K& key, std::size_t precalculated_hash) const { 
+        return m_ht.equal_range(key, precalculated_hash); 
+    }
+    
+    
+    
+    /*
+     * Bucket interface 
+     */
+    size_type bucket_count() const { return m_ht.bucket_count(); }
+    size_type max_bucket_count() const { return m_ht.max_bucket_count(); }
+    
+    
+    /*
+     * Hash policy 
+     */
+    float load_factor() const { return m_ht.load_factor(); }
+    float max_load_factor() const { return m_ht.max_load_factor(); }
+    void max_load_factor(float ml) { m_ht.max_load_factor(ml); }
+    
+    void rehash(size_type count) { m_ht.rehash(count); }
+    void reserve(size_type count) { m_ht.reserve(count); }
+    
+    
+    /*
+     * Observers
+     */
+    hasher hash_function() const { return m_ht.hash_function(); }
+    key_equal key_eq() const { return m_ht.key_eq(); }
+    
+    
+    
+    /*
+     * Other
+     */
+    
+    /**
+     * Convert a const_iterator to an iterator.
+     */
+    iterator mutable_iterator(const_iterator pos) {
+        return m_ht.mutable_iterator(pos);
+    }
+    
+    /**
+     * Requires index <= size().
+     * 
+     * Return an iterator to the element at index. Return end() if index == size().
+     */
+    iterator nth(size_type index) { return m_ht.nth(index); }
+    
+    /**
+     * @copydoc nth(size_type index)
+     */
+    const_iterator nth(size_type index) const { return m_ht.nth(index); }
+    
+    
+    /**
+     * Return const_reference to the first element. Requires the container to not be empty.
+     */
+    const_reference front() const { return m_ht.front(); }
+    
+    /**
+     * Return const_reference to the last element. Requires the container to not be empty.
+     */
+    const_reference back() const { return m_ht.back(); }
+    
+    
+    /**
+     * Only available if ValueTypeContainer is a std::vector. Same as calling 'values_container().data()'.
+     */
+    template<class U = values_container_type, typename std::enable_if<tsl::detail_ordered_hash::is_vector<U>::value>::type* = nullptr>    
+    const typename values_container_type::value_type* data() const noexcept { return m_ht.data(); }
+        
+    /**
+     * Return the container in which the values are stored. The values are in the same order as the insertion order
+     * and are contiguous in the structure, no holes (size() == values_container().size()).
+     */
+    const values_container_type& values_container() const noexcept { return m_ht.values_container(); }
+
+    template<class U = values_container_type, typename std::enable_if<tsl::detail_ordered_hash::is_vector<U>::value>::type* = nullptr>    
+    size_type capacity() const noexcept { return m_ht.capacity(); }
+    
+    void shrink_to_fit() { m_ht.shrink_to_fit(); }
+    
+    
+    
+    /**
+     * Insert the value before pos shifting all the elements on the right of pos (including pos) one position 
+     * to the right.
+     * 
+     * Amortized linear time-complexity in the distance between pos and end().
+     */
+    std::pair<iterator, bool> insert_at_position(const_iterator pos, const value_type& value) { 
+        return m_ht.insert_at_position(pos, value); 
+    }
+    
+    /**
+     * @copydoc insert_at_position(const_iterator pos, const value_type& value)
+     */
+    std::pair<iterator, bool> insert_at_position(const_iterator pos, value_type&& value) { 
+        return m_ht.insert_at_position(pos, std::move(value)); 
+    }
+    
+    /**
+     * @copydoc insert_at_position(const_iterator pos, const value_type& value)
+     * 
+     * Same as insert_at_position(pos, value_type(std::forward<Args>(args)...), mainly
+     * here for coherence.
+     */
+    template<class... Args>
+    std::pair<iterator, bool> emplace_at_position(const_iterator pos, Args&&... args) {
+        return m_ht.emplace_at_position(pos, std::forward<Args>(args)...); 
+    }
+       
+    /**
+     * @copydoc insert_at_position(const_iterator pos, const value_type& value)
+     */       
+    template<class... Args>
+    std::pair<iterator, bool> try_emplace_at_position(const_iterator pos, const key_type& k, Args&&... args) { 
+        return m_ht.try_emplace_at_position(pos, k, std::forward<Args>(args)...);
+    }
+    
+    /**
+     * @copydoc insert_at_position(const_iterator pos, const value_type& value)
+     */    
+    template<class... Args>
+    std::pair<iterator, bool> try_emplace_at_position(const_iterator pos, key_type&& k, Args&&... args) {
+        return m_ht.try_emplace_at_position(pos, std::move(k), std::forward<Args>(args)...);
+    }
+    
+    
+    
+    void pop_back() { m_ht.pop_back(); }
+    
+    /**
+     * Faster erase operation with an O(1) average complexity but it doesn't preserve the insertion order.
+     * 
+     * If an erasure occurs, the last element of the map will take the place of the erased element.
+     */
+    iterator unordered_erase(iterator pos) { return m_ht.unordered_erase(pos); }
+    
+    /**
+     * @copydoc unordered_erase(iterator pos)
+     */
+    iterator unordered_erase(const_iterator pos) { return m_ht.unordered_erase(pos); }
+    
+    /**
+     * @copydoc unordered_erase(iterator pos)
+     */    
+    size_type unordered_erase(const key_type& key) { return m_ht.unordered_erase(key); }
+    
+    /**
+     * @copydoc unordered_erase(iterator pos)
+     * 
+     * Use the hash value 'precalculated_hash' instead of hashing the key. The hash value should be the same
+     * as hash_function()(key). Useful to speed-up the lookup if you already have the hash.
+     */    
+    size_type unordered_erase(const key_type& key, std::size_t precalculated_hash) { 
+        return m_ht.unordered_erase(key, precalculated_hash); 
+    }
+    
+    /**
+     * @copydoc unordered_erase(iterator pos)
+     * 
+     * This overload only participates in the overload resolution if the typedef KeyEqual::is_transparent exists. 
+     * If so, K must be hashable and comparable to Key.
+     */
+    template<class K, class KE = KeyEqual, typename std::enable_if<has_is_transparent<KE>::value>::type* = nullptr> 
+    size_type unordered_erase(const K& key) { return m_ht.unordered_erase(key); }
+    
+    /**
+     * @copydoc unordered_erase(const K& key)
+     * 
+     * Use the hash value 'precalculated_hash' instead of hashing the key. The hash value should be the same
+     * as hash_function()(key). Useful to speed-up the lookup if you already have the hash.
+     */
+    template<class K, class KE = KeyEqual, typename std::enable_if<has_is_transparent<KE>::value>::type* = nullptr> 
+    size_type unordered_erase(const K& key, std::size_t precalculated_hash) { 
+        return m_ht.unordered_erase(key, precalculated_hash); 
+    }
+    
+    /**
+     * Serialize the map through the `serializer` parameter.
+     * 
+     * The `serializer` parameter must be a function object that supports the following call:
+     *  - `template<typename U> void operator()(const U& value);` where the types `std::uint64_t`, `float` and `std::pair<Key, T>` must be supported for U.
+     * 
+     * The implementation leaves binary compatibility (endianness, IEEE 754 for floats, ...) of the types it serializes
+     * in the hands of the `Serializer` function object if compatibility is required.
+     */
+    template<class Serializer>
+    void serialize(Serializer& serializer) const {
+        m_ht.serialize(serializer);
+    }
+
+    /**
+     * Deserialize a previously serialized map through the `deserializer` parameter.
+     * 
+     * The `deserializer` parameter must be a function object that supports the following calls:
+     *  - `template<typename U> U operator()();` where the types `std::uint64_t`, `float` and `std::pair<Key, T>` must be supported for U.
+     * 
+     * If the deserialized hash map type is hash compatible with the serialized map, the deserialization process can be
+     * sped up by setting `hash_compatible` to true. To be hash compatible, the Hash and KeyEqual must behave the same way 
+     * than the ones used on the serialized map. The `std::size_t` must also be of the same size as the one on the platform used
+     * to serialize the map, the same apply for `IndexType`. If these criteria are not met, the behaviour is undefined with 
+     * `hash_compatible` sets to true.
+     * 
+     * The behaviour is undefined if the type `Key` and `T` of the `ordered_map` are not the same as the
+     * types used during serialization.
+     * 
+     * The implementation leaves binary compatibility (endianness, IEEE 754 for floats, size of int, ...) of the types it 
+     * deserializes in the hands of the `Deserializer` function object if compatibility is required.
+     */
+    template<class Deserializer>
+    static ordered_map deserialize(Deserializer& deserializer, bool hash_compatible = false) {
+        ordered_map map(0);
+        map.m_ht.deserialize(deserializer, hash_compatible);
+
+        return map;
+    }
+    
+    
+    
+    friend bool operator==(const ordered_map& lhs, const ordered_map& rhs) { return lhs.m_ht == rhs.m_ht; }
+    friend bool operator!=(const ordered_map& lhs, const ordered_map& rhs) { return lhs.m_ht != rhs.m_ht; }
+    friend bool operator<(const ordered_map& lhs, const ordered_map& rhs) { return lhs.m_ht < rhs.m_ht; }
+    friend bool operator<=(const ordered_map& lhs, const ordered_map& rhs) { return lhs.m_ht <= rhs.m_ht; }
+    friend bool operator>(const ordered_map& lhs, const ordered_map& rhs) { return lhs.m_ht > rhs.m_ht; }
+    friend bool operator>=(const ordered_map& lhs, const ordered_map& rhs) { return lhs.m_ht >= rhs.m_ht; }
+    
+    friend void swap(ordered_map& lhs, ordered_map& rhs) { lhs.swap(rhs); }
+
+private:
+    ht m_ht;
+};
+
+} // end namespace tsl
+
+#endif

third_party/ordered-map-1.0.0/include/tsl/ordered_set.h

@@ -0,0 +1,718 @@
+/**
+ * MIT License
+ * 
+ * Copyright (c) 2017 Thibaut Goetghebuer-Planchon <tessil@gmx.com>
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ * 
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+#ifndef TSL_ORDERED_SET_H
+#define TSL_ORDERED_SET_H
+
+
+#include <cstddef>
+#include <cstdint>
+#include <deque>
+#include <functional>
+#include <initializer_list>
+#include <memory>
+#include <type_traits>
+#include <utility>
+#include <vector>
+#include "ordered_hash.h"
+
+
+namespace tsl {
+
+
+/**
+ * Implementation of an hash set using open addressing with robin hood with backshift delete to resolve collisions.
+ * 
+ * The particularity of this hash set is that it remembers the order in which the elements were added and
+ * provide a way to access the structure which stores these values through the 'values_container()' method. 
+ * The used container is defined by ValueTypeContainer, by default a std::deque is used (grows faster) but
+ * a std::vector may be used. In this case the set provides a 'data()' method which give a direct access 
+ * to the memory used to store the values (which can be useful to communicate with C API's).
+ * 
+ * The Key must be copy constructible and/or move constructible. To use `unordered_erase` it also must be swappable.
+ * 
+ * The behaviour of the hash set is undefined if the destructor of Key throws an exception.
+ * 
+ * By default the maximum size of a set is limited to 2^32 - 1 values, if needed this can be changed through
+ * the IndexType template parameter. Using an `uint64_t` will raise this limit to 2^64 - 1 values but each
+ * bucket will use 16 bytes instead of 8 bytes in addition to the space needed to store the values.
+ * 
+ * Iterators invalidation:
+ *  - clear, operator=, reserve, rehash: always invalidate the iterators (also invalidate end()).
+ *  - insert, emplace, emplace_hint, operator[]: when a std::vector is used as ValueTypeContainer 
+ *                                               and if size() < capacity(), only end(). 
+ *                                               Otherwise all the iterators are invalidated if an insert occurs.
+ *  - erase, unordered_erase: when a std::vector is used as ValueTypeContainer invalidate the iterator of 
+ *                            the erased element and all the ones after the erased element (including end()). 
+ *                            Otherwise all the iterators are invalidated if an erase occurs.
+ */
+template<class Key, 
+         class Hash = std::hash<Key>,
+         class KeyEqual = std::equal_to<Key>,
+         class Allocator = std::allocator<Key>,
+         class ValueTypeContainer = std::deque<Key, Allocator>,
+         class IndexType = std::uint_least32_t>
+class ordered_set {
+private:
+    template<typename U>
+    using has_is_transparent = tsl::detail_ordered_hash::has_is_transparent<U>;
+    
+    class KeySelect {
+    public:
+        using key_type = Key;
+        
+        const key_type& operator()(const Key& key) const noexcept {
+            return key;
+        }
+        
+        key_type& operator()(Key& key) noexcept {
+            return key;
+        }
+    };
+    
+    using ht = detail_ordered_hash::ordered_hash<Key, KeySelect, void,
+                                                 Hash, KeyEqual, Allocator, ValueTypeContainer, IndexType>;
+            
+public:
+    using key_type = typename ht::key_type;
+    using value_type = typename ht::value_type;
+    using size_type = typename ht::size_type;
+    using difference_type = typename ht::difference_type;
+    using hasher = typename ht::hasher;
+    using key_equal = typename ht::key_equal;
+    using allocator_type = typename ht::allocator_type;
+    using reference = typename ht::reference;
+    using const_reference = typename ht::const_reference;
+    using pointer = typename ht::pointer;
+    using const_pointer = typename ht::const_pointer;
+    using iterator = typename ht::iterator;
+    using const_iterator = typename ht::const_iterator;
+    using reverse_iterator = typename ht::reverse_iterator;
+    using const_reverse_iterator = typename ht::const_reverse_iterator;
+    
+    using values_container_type = typename ht::values_container_type;
+
+    
+    /*
+     * Constructors
+     */
+    ordered_set(): ordered_set(ht::DEFAULT_INIT_BUCKETS_SIZE) {
+    }
+    
+    explicit ordered_set(size_type bucket_count, 
+                         const Hash& hash = Hash(),
+                         const KeyEqual& equal = KeyEqual(),
+                         const Allocator& alloc = Allocator()): 
+                        m_ht(bucket_count, hash, equal, alloc, ht::DEFAULT_MAX_LOAD_FACTOR)
+    {
+    }
+    
+    ordered_set(size_type bucket_count,
+                const Allocator& alloc): ordered_set(bucket_count, Hash(), KeyEqual(), alloc)
+    {
+    }
+    
+    ordered_set(size_type bucket_count,
+                const Hash& hash,
+                const Allocator& alloc): ordered_set(bucket_count, hash, KeyEqual(), alloc)
+    {
+    }
+    
+    explicit ordered_set(const Allocator& alloc): ordered_set(ht::DEFAULT_INIT_BUCKETS_SIZE, alloc) {
+    }
+    
+    template<class InputIt>
+    ordered_set(InputIt first, InputIt last,
+                size_type bucket_count = ht::DEFAULT_INIT_BUCKETS_SIZE,
+                const Hash& hash = Hash(),
+                const KeyEqual& equal = KeyEqual(),
+                const Allocator& alloc = Allocator()): ordered_set(bucket_count, hash, equal, alloc)
+    {
+        insert(first, last);
+    }
+    
+    template<class InputIt>
+    ordered_set(InputIt first, InputIt last,
+                size_type bucket_count,
+                const Allocator& alloc): ordered_set(first, last, bucket_count, Hash(), KeyEqual(), alloc)
+    {
+    }
+    
+    template<class InputIt>
+    ordered_set(InputIt first, InputIt last,
+                size_type bucket_count,
+                const Hash& hash,
+                const Allocator& alloc): ordered_set(first, last, bucket_count, hash, KeyEqual(), alloc)
+    {
+    }
+
+    ordered_set(std::initializer_list<value_type> init,
+                size_type bucket_count = ht::DEFAULT_INIT_BUCKETS_SIZE,
+                const Hash& hash = Hash(),
+                const KeyEqual& equal = KeyEqual(),
+                const Allocator& alloc = Allocator()): 
+            ordered_set(init.begin(), init.end(), bucket_count, hash, equal, alloc)
+    {
+    }
+
+    ordered_set(std::initializer_list<value_type> init,
+                size_type bucket_count,
+                const Allocator& alloc): 
+            ordered_set(init.begin(), init.end(), bucket_count, Hash(), KeyEqual(), alloc)
+    {
+    }
+
+    ordered_set(std::initializer_list<value_type> init,
+                size_type bucket_count,
+                const Hash& hash,
+                const Allocator& alloc): 
+            ordered_set(init.begin(), init.end(), bucket_count, hash, KeyEqual(), alloc)
+    {
+    }
+
+    
+    ordered_set& operator=(std::initializer_list<value_type> ilist) {
+        m_ht.clear();
+        
+        m_ht.reserve(ilist.size());
+        m_ht.insert(ilist.begin(), ilist.end());
+        
+        return *this;
+    }
+    
+    allocator_type get_allocator() const { return m_ht.get_allocator(); }
+    
+    
+    /*
+     * Iterators
+     */
+    iterator begin() noexcept { return m_ht.begin(); }
+    const_iterator begin() const noexcept { return m_ht.begin(); }
+    const_iterator cbegin() const noexcept { return m_ht.cbegin(); }
+    
+    iterator end() noexcept { return m_ht.end(); }
+    const_iterator end() const noexcept { return m_ht.end(); }
+    const_iterator cend() const noexcept { return m_ht.cend(); }
+    
+    reverse_iterator rbegin() noexcept { return m_ht.rbegin(); }
+    const_reverse_iterator rbegin() const noexcept { return m_ht.rbegin(); }
+    const_reverse_iterator rcbegin() const noexcept { return m_ht.rcbegin(); }
+    
+    reverse_iterator rend() noexcept { return m_ht.rend(); }
+    const_reverse_iterator rend() const noexcept { return m_ht.rend(); }
+    const_reverse_iterator rcend() const noexcept { return m_ht.rcend(); }
+    
+    
+    /*
+     * Capacity
+     */
+    bool empty() const noexcept { return m_ht.empty(); }
+    size_type size() const noexcept { return m_ht.size(); }
+    size_type max_size() const noexcept { return m_ht.max_size(); }
+    
+    /*
+     * Modifiers
+     */
+    void clear() noexcept { m_ht.clear(); }
+    
+    
+    
+    std::pair<iterator, bool> insert(const value_type& value) { return m_ht.insert(value); }
+    std::pair<iterator, bool> insert(value_type&& value) { return m_ht.insert(std::move(value)); }
+    
+    iterator insert(const_iterator hint, const value_type& value) {
+        return m_ht.insert_hint(hint, value); 
+    }
+    
+    iterator insert(const_iterator hint, value_type&& value) { 
+        return m_ht.insert_hint(hint, std::move(value)); 
+    }
+    
+    template<class InputIt>
+    void insert(InputIt first, InputIt last) { m_ht.insert(first, last); }
+    void insert(std::initializer_list<value_type> ilist) { m_ht.insert(ilist.begin(), ilist.end()); }
+
+    
+    
+    /**
+     * Due to the way elements are stored, emplace will need to move or copy the key-value once.
+     * The method is equivalent to insert(value_type(std::forward<Args>(args)...));
+     * 
+     * Mainly here for compatibility with the std::unordered_map interface.
+     */
+    template<class... Args>
+    std::pair<iterator, bool> emplace(Args&&... args) { return m_ht.emplace(std::forward<Args>(args)...); }
+    
+    /**
+     * Due to the way elements are stored, emplace_hint will need to move or copy the key-value once.
+     * The method is equivalent to insert(hint, value_type(std::forward<Args>(args)...));
+     * 
+     * Mainly here for compatibility with the std::unordered_map interface.
+     */
+    template<class... Args>
+    iterator emplace_hint(const_iterator hint, Args&&... args) {
+        return m_ht.emplace_hint(hint, std::forward<Args>(args)...); 
+    }
+
+    /**
+     * When erasing an element, the insert order will be preserved and no holes will be present in the container
+     * returned by 'values_container()'. 
+     * 
+     * The method is in O(n), if the order is not important 'unordered_erase(...)' method is faster with an O(1)
+     * average complexity.
+     */    
+    iterator erase(iterator pos) { return m_ht.erase(pos); }
+    
+    /**
+     * @copydoc erase(iterator pos)
+     */    
+    iterator erase(const_iterator pos) { return m_ht.erase(pos); }
+    
+    /**
+     * @copydoc erase(iterator pos)
+     */    
+    iterator erase(const_iterator first, const_iterator last) { return m_ht.erase(first, last); }
+    
+    /**
+     * @copydoc erase(iterator pos)
+     */    
+    size_type erase(const key_type& key) { return m_ht.erase(key); }
+    
+    /**
+     * @copydoc erase(iterator pos)
+     * 
+     * Use the hash value 'precalculated_hash' instead of hashing the key. The hash value should be the same
+     * as hash_function()(key). Useful to speed-up the lookup to the value if you already have the hash.
+     */    
+    size_type erase(const key_type& key, std::size_t precalculated_hash) { 
+        return m_ht.erase(key, precalculated_hash); 
+    }
+    
+    /**
+     * @copydoc erase(iterator pos)
+     * 
+     * This overload only participates in the overload resolution if the typedef KeyEqual::is_transparent exists. 
+     * If so, K must be hashable and comparable to Key.
+     */
+    template<class K, class KE = KeyEqual, typename std::enable_if<has_is_transparent<KE>::value>::type* = nullptr> 
+    size_type erase(const K& key) { return m_ht.erase(key); }
+    
+    /**
+     * @copydoc erase(const key_type& key, std::size_t precalculated_hash)
+     * 
+     * This overload only participates in the overload resolution if the typedef KeyEqual::is_transparent exists. 
+     * If so, K must be hashable and comparable to Key.
+     */
+    template<class K, class KE = KeyEqual, typename std::enable_if<has_is_transparent<KE>::value>::type* = nullptr> 
+    size_type erase(const K& key, std::size_t precalculated_hash) { 
+        return m_ht.erase(key, precalculated_hash); 
+    }
+    
+    
+    
+    void swap(ordered_set& other) { other.m_ht.swap(m_ht); }
+    
+    /*
+     * Lookup
+     */
+    size_type count(const Key& key) const { return m_ht.count(key); }
+    
+    /**
+     * Use the hash value 'precalculated_hash' instead of hashing the key. The hash value should be the same
+     * as hash_function()(key). Useful to speed-up the lookup if you already have the hash.
+     */
+    size_type count(const Key& key, std::size_t precalculated_hash) const { 
+        return m_ht.count(key, precalculated_hash); 
+    }
+    
+    /**
+     * This overload only participates in the overload resolution if the typedef KeyEqual::is_transparent exists. 
+     * If so, K must be hashable and comparable to Key.
+     */
+    template<class K, class KE = KeyEqual, typename std::enable_if<has_is_transparent<KE>::value>::type* = nullptr>
+    size_type count(const K& key) const { return m_ht.count(key); }
+    
+    /**
+     * @copydoc count(const K& key) const
+     * 
+     * Use the hash value 'precalculated_hash' instead of hashing the key. The hash value should be the same
+     * as hash_function()(key). Useful to speed-up the lookup if you already have the hash.
+     */     
+    template<class K, class KE = KeyEqual, typename std::enable_if<has_is_transparent<KE>::value>::type* = nullptr> 
+    size_type count(const K& key, std::size_t precalculated_hash) const { 
+        return m_ht.count(key, precalculated_hash);
+    }
+    
+    
+    
+    
+    iterator find(const Key& key) { return m_ht.find(key); }
+    
+    /**
+     * Use the hash value 'precalculated_hash' instead of hashing the key. The hash value should be the same
+     * as hash_function()(key). Useful to speed-up the lookup if you already have the hash.
+     */
+    iterator find(const Key& key, std::size_t precalculated_hash) { return m_ht.find(key, precalculated_hash); }
+    
+    const_iterator find(const Key& key) const { return m_ht.find(key); }
+    
+    /**
+     * @copydoc find(const Key& key, std::size_t precalculated_hash)
+     */
+    const_iterator find(const Key& key, std::size_t precalculated_hash) const { 
+        return m_ht.find(key, precalculated_hash);
+    }
+    
+    /**
+     * This overload only participates in the overload resolution if the typedef KeyEqual::is_transparent exists. 
+     * If so, K must be hashable and comparable to Key.
+     */
+    template<class K, class KE = KeyEqual, typename std::enable_if<has_is_transparent<KE>::value>::type* = nullptr>
+    iterator find(const K& key) { return m_ht.find(key); }
+    
+    /**
+     * @copydoc find(const K& key)
+     * 
+     * Use the hash value 'precalculated_hash' instead of hashing the key. The hash value should be the same
+     * as hash_function()(key). Useful to speed-up the lookup if you already have the hash.
+     */
+    template<class K, class KE = KeyEqual, typename std::enable_if<has_is_transparent<KE>::value>::type* = nullptr> 
+    iterator find(const K& key, std::size_t precalculated_hash) { return m_ht.find(key, precalculated_hash); }
+    
+    /**
+     * @copydoc find(const K& key)
+     */
+    template<class K, class KE = KeyEqual, typename std::enable_if<has_is_transparent<KE>::value>::type* = nullptr>
+    const_iterator find(const K& key) const { return m_ht.find(key); }
+    
+    /**
+     * @copydoc find(const K& key)
+     * 
+     * Use the hash value 'precalculated_hash' instead of hashing the key. The hash value should be the same
+     * as hash_function()(key). Useful to speed-up the lookup if you already have the hash.
+     */
+    template<class K, class KE = KeyEqual, typename std::enable_if<has_is_transparent<KE>::value>::type* = nullptr> 
+    const_iterator find(const K& key, std::size_t precalculated_hash) const { 
+        return m_ht.find(key, precalculated_hash); 
+    }
+    
+    
+    
+    bool contains(const Key& key) const { return m_ht.contains(key); }
+    
+    /**
+     * Use the hash value 'precalculated_hash' instead of hashing the key. The hash value should be the same
+     * as hash_function()(key). Useful to speed-up the lookup if you already have the hash.
+     */
+    bool contains(const Key& key, std::size_t precalculated_hash) const { 
+        return m_ht.contains(key, precalculated_hash); 
+    }
+    
+    /**
+     * This overload only participates in the overload resolution if the typedef KeyEqual::is_transparent exists. 
+     * If so, K must be hashable and comparable to Key.
+     */
+    template<class K, class KE = KeyEqual, typename std::enable_if<has_is_transparent<KE>::value>::type* = nullptr> 
+    bool contains(const K& key) const { return m_ht.contains(key); }
+    
+    /**
+     * @copydoc contains(const K& key) const
+     * 
+     * Use the hash value 'precalculated_hash' instead of hashing the key. The hash value should be the same
+     * as hash_function()(key). Useful to speed-up the lookup if you already have the hash.
+     */
+    template<class K, class KE = KeyEqual, typename std::enable_if<has_is_transparent<KE>::value>::type* = nullptr> 
+    bool contains(const K& key, std::size_t precalculated_hash) const { 
+        return m_ht.contains(key, precalculated_hash); 
+    }
+    
+    
+    
+    std::pair<iterator, iterator> equal_range(const Key& key) { return m_ht.equal_range(key); }
+    
+    /**
+     * Use the hash value 'precalculated_hash' instead of hashing the key. The hash value should be the same
+     * as hash_function()(key). Useful to speed-up the lookup if you already have the hash.
+     */
+    std::pair<iterator, iterator> equal_range(const Key& key, std::size_t precalculated_hash) { 
+        return m_ht.equal_range(key, precalculated_hash); 
+    }
+    
+    std::pair<const_iterator, const_iterator> equal_range(const Key& key) const { return m_ht.equal_range(key); }
+    
+    /**
+     * @copydoc equal_range(const Key& key, std::size_t precalculated_hash)
+     */
+    std::pair<const_iterator, const_iterator> equal_range(const Key& key, std::size_t precalculated_hash) const { 
+        return m_ht.equal_range(key, precalculated_hash); 
+    }
+    
+    /**
+     * This overload only participates in the overload resolution if the typedef KeyEqual::is_transparent exists. 
+     * If so, K must be hashable and comparable to Key.
+     */
+    template<class K, class KE = KeyEqual, typename std::enable_if<has_is_transparent<KE>::value>::type* = nullptr>     
+    std::pair<iterator, iterator> equal_range(const K& key) { return m_ht.equal_range(key); }
+    
+    /**
+     * @copydoc equal_range(const K& key)
+     * 
+     * Use the hash value 'precalculated_hash' instead of hashing the key. The hash value should be the same
+     * as hash_function()(key). Useful to speed-up the lookup if you already have the hash.
+     */
+    template<class K, class KE = KeyEqual, typename std::enable_if<has_is_transparent<KE>::value>::type* = nullptr> 
+    std::pair<iterator, iterator> equal_range(const K& key, std::size_t precalculated_hash) { 
+        return m_ht.equal_range(key, precalculated_hash); 
+    }
+    
+    /**
+     * @copydoc equal_range(const K& key)
+     */
+    template<class K, class KE = KeyEqual, typename std::enable_if<has_is_transparent<KE>::value>::type* = nullptr>     
+    std::pair<const_iterator, const_iterator> equal_range(const K& key) const { return m_ht.equal_range(key); }
+    
+    /**
+     * @copydoc equal_range(const K& key, std::size_t precalculated_hash)
+     */    
+    template<class K, class KE = KeyEqual, typename std::enable_if<has_is_transparent<KE>::value>::type* = nullptr> 
+    std::pair<const_iterator, const_iterator> equal_range(const K& key, std::size_t precalculated_hash) const { 
+        return m_ht.equal_range(key, precalculated_hash); 
+    }
+    
+
+    /*
+     * Bucket interface 
+     */
+    size_type bucket_count() const { return m_ht.bucket_count(); }
+    size_type max_bucket_count() const { return m_ht.max_bucket_count(); }
+    
+    
+    /*
+     *  Hash policy 
+     */
+    float load_factor() const { return m_ht.load_factor(); }
+    float max_load_factor() const { return m_ht.max_load_factor(); }
+    void max_load_factor(float ml) { m_ht.max_load_factor(ml); }
+    
+    void rehash(size_type count) { m_ht.rehash(count); }
+    void reserve(size_type count) { m_ht.reserve(count); }
+    
+    
+    /*
+     * Observers
+     */
+    hasher hash_function() const { return m_ht.hash_function(); }
+    key_equal key_eq() const { return m_ht.key_eq(); }
+    
+    
+    /*
+     * Other
+     */
+    
+    /**
+     * Convert a const_iterator to an iterator.
+     */
+    iterator mutable_iterator(const_iterator pos) {
+        return m_ht.mutable_iterator(pos);
+    }
+    
+    /**
+     * Requires index <= size().
+     * 
+     * Return an iterator to the element at index. Return end() if index == size().
+     */
+    iterator nth(size_type index) { return m_ht.nth(index); }
+    
+    /**
+     * @copydoc nth(size_type index)
+     */
+    const_iterator nth(size_type index) const { return m_ht.nth(index); }
+    
+    
+    /**
+     * Return const_reference to the first element. Requires the container to not be empty.
+     */
+    const_reference front() const { return m_ht.front(); }
+    
+    /**
+     * Return const_reference to the last element. Requires the container to not be empty.
+     */
+    const_reference back() const { return m_ht.back(); }
+    
+    
+    /**
+     * Only available if ValueTypeContainer is a std::vector. Same as calling 'values_container().data()'.
+     */ 
+    template<class U = values_container_type, typename std::enable_if<tsl::detail_ordered_hash::is_vector<U>::value>::type* = nullptr>    
+    const typename values_container_type::value_type* data() const noexcept { return m_ht.data(); }
+    
+    /**
+     * Return the container in which the values are stored. The values are in the same order as the insertion order
+     * and are contiguous in the structure, no holes (size() == values_container().size()).
+     */        
+    const values_container_type& values_container() const noexcept { return m_ht.values_container(); }
+
+    template<class U = values_container_type, typename std::enable_if<tsl::detail_ordered_hash::is_vector<U>::value>::type* = nullptr>    
+    size_type capacity() const noexcept { return m_ht.capacity(); }
+    
+    void shrink_to_fit() { m_ht.shrink_to_fit(); }
+    
+    
+    
+    /**
+     * Insert the value before pos shifting all the elements on the right of pos (including pos) one position 
+     * to the right.
+     * 
+     * Amortized linear time-complexity in the distance between pos and end().
+     */
+    std::pair<iterator, bool> insert_at_position(const_iterator pos, const value_type& value) { 
+        return m_ht.insert_at_position(pos, value); 
+    }
+    
+    /**
+     * @copydoc insert_at_position(const_iterator pos, const value_type& value)
+     */
+    std::pair<iterator, bool> insert_at_position(const_iterator pos, value_type&& value) { 
+        return m_ht.insert_at_position(pos, std::move(value)); 
+    }
+    
+    /**
+     * @copydoc insert_at_position(const_iterator pos, const value_type& value)
+     * 
+     * Same as insert_at_position(pos, value_type(std::forward<Args>(args)...), mainly
+     * here for coherence.
+     */
+    template<class... Args>
+    std::pair<iterator, bool> emplace_at_position(const_iterator pos, Args&&... args) {
+        return m_ht.emplace_at_position(pos, std::forward<Args>(args)...); 
+    }
+    
+    
+    
+    void pop_back() { m_ht.pop_back(); }
+    
+    /**
+     * Faster erase operation with an O(1) average complexity but it doesn't preserve the insertion order.
+     * 
+     * If an erasure occurs, the last element of the map will take the place of the erased element.
+     */    
+    iterator unordered_erase(iterator pos) { return m_ht.unordered_erase(pos); }
+    
+    /**
+     * @copydoc unordered_erase(iterator pos)
+     */    
+    iterator unordered_erase(const_iterator pos) { return m_ht.unordered_erase(pos); }
+    
+    /**
+     * @copydoc unordered_erase(iterator pos)
+     */    
+    size_type unordered_erase(const key_type& key) { return m_ht.unordered_erase(key); }
+    
+    /**
+     * @copydoc unordered_erase(iterator pos)
+     * 
+     * Use the hash value 'precalculated_hash' instead of hashing the key. The hash value should be the same
+     * as hash_function()(key). Useful to speed-up the lookup if you already have the hash.
+     */    
+    size_type unordered_erase(const key_type& key, std::size_t precalculated_hash) { 
+        return m_ht.unordered_erase(key, precalculated_hash); 
+    }
+    
+    /**
+     * @copydoc unordered_erase(iterator pos)
+     * 
+     * This overload only participates in the overload resolution if the typedef KeyEqual::is_transparent exists. 
+     * If so, K must be hashable and comparable to Key.
+     */
+    template<class K, class KE = KeyEqual, typename std::enable_if<has_is_transparent<KE>::value>::type* = nullptr> 
+    size_type unordered_erase(const K& key) { return m_ht.unordered_erase(key); }
+    
+    /**
+     * @copydoc unordered_erase(const K& key)
+     * 
+     * Use the hash value 'precalculated_hash' instead of hashing the key. The hash value should be the same
+     * as hash_function()(key). Useful to speed-up the lookup if you already have the hash.
+     */
+    template<class K, class KE = KeyEqual, typename std::enable_if<has_is_transparent<KE>::value>::type* = nullptr> 
+    size_type unordered_erase(const K& key, std::size_t precalculated_hash) { 
+        return m_ht.unordered_erase(key, precalculated_hash); 
+    }
+    
+    /**
+     * Serialize the set through the `serializer` parameter.
+     * 
+     * The `serializer` parameter must be a function object that supports the following call:
+     *  - `void operator()(const U& value);` where the types `std::uint64_t`, `float` and `Key` must be supported for U.
+     * 
+     * The implementation leaves binary compatibility (endianness, IEEE 754 for floats, ...) of the types it serializes
+     * in the hands of the `Serializer` function object if compatibility is required.
+     */
+    template<class Serializer>
+    void serialize(Serializer& serializer) const {
+        m_ht.serialize(serializer);
+    }
+
+    /**
+     * Deserialize a previously serialized set through the `deserializer` parameter.
+     * 
+     * The `deserializer` parameter must be a function object that supports the following calls:
+     *  - `template<typename U> U operator()();` where the types `std::uint64_t`, `float` and `Key` must be supported for U.
+     * 
+     * If the deserialized hash set type is hash compatible with the serialized set, the deserialization process can be
+     * sped up by setting `hash_compatible` to true. To be hash compatible, the Hash and KeyEqual must behave the same way 
+     * than the ones used on the serialized map. The `std::size_t` must also be of the same size as the one on the platform used
+     * to serialize the map, the same apply for `IndexType`. If these criteria are not met, the behaviour is undefined with 
+     * `hash_compatible` sets to true.
+     *
+     * The behaviour is undefined if the type `Key` of the `ordered_set` is not the same as the
+     * type used during serialization.
+     * 
+     * The implementation leaves binary compatibility (endianness, IEEE 754 for floats, size of int, ...) of the types it 
+     * deserializes in the hands of the `Deserializer` function object if compatibility is required.
+     */
+    template<class Deserializer>
+    static ordered_set deserialize(Deserializer& deserializer, bool hash_compatible = false) {
+        ordered_set set(0);
+        set.m_ht.deserialize(deserializer, hash_compatible);
+
+        return set;
+    }
+    
+    
+    
+    friend bool operator==(const ordered_set& lhs, const ordered_set& rhs) { return lhs.m_ht == rhs.m_ht; }
+    friend bool operator!=(const ordered_set& lhs, const ordered_set& rhs) { return lhs.m_ht != rhs.m_ht; }
+    friend bool operator<(const ordered_set& lhs, const ordered_set& rhs) { return lhs.m_ht < rhs.m_ht; }
+    friend bool operator<=(const ordered_set& lhs, const ordered_set& rhs) { return lhs.m_ht <= rhs.m_ht; }
+    friend bool operator>(const ordered_set& lhs, const ordered_set& rhs) { return lhs.m_ht > rhs.m_ht; }
+    friend bool operator>=(const ordered_set& lhs, const ordered_set& rhs) { return lhs.m_ht >= rhs.m_ht; }
+    
+    friend void swap(ordered_set& lhs, ordered_set& rhs) { lhs.swap(rhs); }
+    
+private:
+    ht m_ht;    
+};
+
+} // end namespace tsl
+
+#endif

third_party/toml11-3.6.0/LICENSE

@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2017 Toru Niina
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.

third_party/toml11-3.6.0/toml.hpp

@@ -0,0 +1,45 @@
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2017 Toru Niina
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#ifndef TOML_FOR_MODERN_CPP
+#define TOML_FOR_MODERN_CPP
+
+#ifndef __cplusplus
+#    error "__cplusplus is not defined"
+#endif
+
+#if __cplusplus < 201103L && _MSC_VER < 1900
+#    error "toml11 requires C++11 or later."
+#endif
+
+#define TOML11_VERSION_MAJOR 3
+#define TOML11_VERSION_MINOR 5
+#define TOML11_VERSION_PATCH 0
+
+#include "toml/parser.hpp"
+#include "toml/literal.hpp"
+#include "toml/serializer.hpp"
+#include "toml/get.hpp"
+
+#endif// TOML_FOR_MODERN_CPP

third_party/toml11-3.6.0/toml/color.hpp

@@ -0,0 +1,64 @@
+#ifndef TOML11_COLOR_HPP
+#define TOML11_COLOR_HPP
+#include <cstdint>
+#include <ostream>
+
+#ifdef TOML11_COLORIZE_ERROR_MESSAGE
+#define TOML11_ERROR_MESSAGE_COLORIZED true
+#else
+#define TOML11_ERROR_MESSAGE_COLORIZED false
+#endif
+
+namespace toml
+{
+
+// put ANSI escape sequence to ostream
+namespace color_ansi
+{
+namespace detail
+{
+inline int colorize_index()
+{
+    static const int index = std::ios_base::xalloc();
+    return index;
+}
+} // detail
+
+inline std::ostream& colorize(std::ostream& os)
+{
+    // by default, it is zero.
+    os.iword(detail::colorize_index()) = 1;
+    return os;
+}
+inline std::ostream& nocolorize(std::ostream& os)
+{
+    os.iword(detail::colorize_index()) = 0;
+    return os;
+}
+inline std::ostream& reset  (std::ostream& os)
+{if(os.iword(detail::colorize_index()) == 1) {os << "\033[00m";} return os;}
+inline std::ostream& bold   (std::ostream& os)
+{if(os.iword(detail::colorize_index()) == 1) {os << "\033[01m";} return os;}
+inline std::ostream& grey   (std::ostream& os)
+{if(os.iword(detail::colorize_index()) == 1) {os << "\033[30m";} return os;}
+inline std::ostream& red    (std::ostream& os)
+{if(os.iword(detail::colorize_index()) == 1) {os << "\033[31m";} return os;}
+inline std::ostream& green  (std::ostream& os)
+{if(os.iword(detail::colorize_index()) == 1) {os << "\033[32m";} return os;}
+inline std::ostream& yellow (std::ostream& os)
+{if(os.iword(detail::colorize_index()) == 1) {os << "\033[33m";} return os;}
+inline std::ostream& blue   (std::ostream& os)
+{if(os.iword(detail::colorize_index()) == 1) {os << "\033[34m";} return os;}
+inline std::ostream& magenta(std::ostream& os)
+{if(os.iword(detail::colorize_index()) == 1) {os << "\033[35m";} return os;}
+inline std::ostream& cyan   (std::ostream& os)
+{if(os.iword(detail::colorize_index()) == 1) {os << "\033[36m";} return os;}
+inline std::ostream& white  (std::ostream& os)
+{if(os.iword(detail::colorize_index()) == 1) {os << "\033[37m";} return os;}
+} // color_ansi
+
+// ANSI escape sequence is the only and default colorization method currently
+namespace color = color_ansi;
+
+} // toml
+#endif// TOML11_COLOR_HPP

third_party/toml11-3.6.0/toml/combinator.hpp

@@ -0,0 +1,306 @@
+//     Copyright Toru Niina 2017.
+// Distributed under the MIT License.
+#ifndef TOML11_COMBINATOR_HPP
+#define TOML11_COMBINATOR_HPP
+#include <cassert>
+#include <cctype>
+#include <cstdio>
+
+#include <array>
+#include <iomanip>
+#include <iterator>
+#include <limits>
+#include <type_traits>
+
+#include "region.hpp"
+#include "result.hpp"
+#include "traits.hpp"
+#include "utility.hpp"
+
+// they scans characters and returns region if it matches to the condition.
+// when they fail, it does not change the location.
+// in lexer.hpp, these are used.
+
+namespace toml
+{
+namespace detail
+{
+
+// to output character as an error message.
+inline std::string show_char(const char c)
+{
+    // It supress an error that occurs only in Debug mode of MSVC++ on Windows.
+    // I'm not completely sure but they check the value of char to be in the
+    // range [0, 256) and some of the COMPLETELY VALID utf-8 character sometimes
+    // has negative value (if char has sign). So here it re-interprets c as
+    // unsigned char through pointer. In general, converting pointer to a
+    // pointer that has different type cause UB, but `(signed|unsigned)?char`
+    // are one of the exceptions. Converting pointer only to char and std::byte
+    // (c++17) are valid.
+    if(std::isgraph(*reinterpret_cast<unsigned char const*>(std::addressof(c))))
+    {
+        return std::string(1, c);
+    }
+    else
+    {
+        std::array<char, 5> buf;
+        buf.fill('\0');
+        const auto r = std::snprintf(
+                buf.data(), buf.size(), "0x%02x", static_cast<int>(c) & 0xFF);
+        (void) r; // Unused variable warning
+        assert(r == static_cast<int>(buf.size()) - 1);
+        return std::string(buf.data());
+    }
+}
+
+template<char C>
+struct character
+{
+    static constexpr char target = C;
+
+    static result<region, none_t>
+    invoke(location& loc)
+    {
+        if(loc.iter() == loc.end()) {return none();}
+        const auto first = loc.iter();
+
+        const char c = *(loc.iter());
+        if(c != target)
+        {
+            return none();
+        }
+        loc.advance(); // update location
+
+        return ok(region(loc, first, loc.iter()));
+    }
+};
+template<char C>
+constexpr char character<C>::target;
+
+// closed interval [Low, Up]. both Low and Up are included.
+template<char Low, char Up>
+struct in_range
+{
+    // assuming ascii part of UTF-8...
+    static_assert(Low <= Up, "lower bound should be less than upper bound.");
+
+    static constexpr char upper = Up;
+    static constexpr char lower = Low;
+
+    static result<region, none_t>
+    invoke(location& loc)
+    {
+        if(loc.iter() == loc.end()) {return none();}
+        const auto first = loc.iter();
+
+        const char c = *(loc.iter());
+        if(c < lower || upper < c)
+        {
+            return none();
+        }
+
+        loc.advance();
+        return ok(region(loc, first, loc.iter()));
+    }
+};
+template<char L, char U> constexpr char in_range<L, U>::upper;
+template<char L, char U> constexpr char in_range<L, U>::lower;
+
+// keep iterator if `Combinator` matches. otherwise, increment `iter` by 1 char.
+// for detecting invalid characters, like control sequences in toml string.
+template<typename Combinator>
+struct exclude
+{
+    static result<region, none_t>
+    invoke(location& loc)
+    {
+        if(loc.iter() == loc.end()) {return none();}
+        auto first = loc.iter();
+
+        auto rslt = Combinator::invoke(loc);
+        if(rslt.is_ok())
+        {
+            loc.reset(first);
+            return none();
+        }
+        loc.reset(std::next(first)); // XXX maybe loc.advance() is okay but...
+        return ok(region(loc, first, loc.iter()));
+    }
+};
+
+// increment `iter`, if matches. otherwise, just return empty string.
+template<typename Combinator>
+struct maybe
+{
+    static result<region, none_t>
+    invoke(location& loc)
+    {
+        const auto rslt = Combinator::invoke(loc);
+        if(rslt.is_ok())
+        {
+            return rslt;
+        }
+        return ok(region(loc));
+    }
+};
+
+template<typename ... Ts>
+struct sequence;
+
+template<typename Head, typename ... Tail>
+struct sequence<Head, Tail...>
+{
+    static result<region, none_t>
+    invoke(location& loc)
+    {
+        const auto first = loc.iter();
+        const auto rslt = Head::invoke(loc);
+        if(rslt.is_err())
+        {
+            loc.reset(first);
+            return none();
+        }
+        return sequence<Tail...>::invoke(loc, std::move(rslt.unwrap()), first);
+    }
+
+    // called from the above function only, recursively.
+    template<typename Iterator>
+    static result<region, none_t>
+    invoke(location& loc, region reg, Iterator first)
+    {
+        const auto rslt = Head::invoke(loc);
+        if(rslt.is_err())
+        {
+            loc.reset(first);
+            return none();
+        }
+        reg += rslt.unwrap(); // concat regions
+        return sequence<Tail...>::invoke(loc, std::move(reg), first);
+    }
+};
+
+template<typename Head>
+struct sequence<Head>
+{
+    // would be called from sequence<T ...>::invoke only.
+    template<typename Iterator>
+    static result<region, none_t>
+    invoke(location& loc, region reg, Iterator first)
+    {
+        const auto rslt = Head::invoke(loc);
+        if(rslt.is_err())
+        {
+            loc.reset(first);
+            return none();
+        }
+        reg += rslt.unwrap(); // concat regions
+        return ok(reg);
+    }
+};
+
+template<typename ... Ts>
+struct either;
+
+template<typename Head, typename ... Tail>
+struct either<Head, Tail...>
+{
+    static result<region, none_t>
+    invoke(location& loc)
+    {
+        const auto rslt = Head::invoke(loc);
+        if(rslt.is_ok()) {return rslt;}
+        return either<Tail...>::invoke(loc);
+    }
+};
+template<typename Head>
+struct either<Head>
+{
+    static result<region, none_t>
+    invoke(location& loc)
+    {
+        return Head::invoke(loc);
+    }
+};
+
+template<typename T, typename N>
+struct repeat;
+
+template<std::size_t N> struct exactly{};
+template<std::size_t N> struct at_least{};
+struct unlimited{};
+
+template<typename T, std::size_t N>
+struct repeat<T, exactly<N>>
+{
+    static result<region, none_t>
+    invoke(location& loc)
+    {
+        region retval(loc);
+        const auto first = loc.iter();
+        for(std::size_t i=0; i<N; ++i)
+        {
+            auto rslt = T::invoke(loc);
+            if(rslt.is_err())
+            {
+                loc.reset(first);
+                return none();
+            }
+            retval += rslt.unwrap();
+        }
+        return ok(std::move(retval));
+    }
+};
+
+template<typename T, std::size_t N>
+struct repeat<T, at_least<N>>
+{
+    static result<region, none_t>
+    invoke(location& loc)
+    {
+        region retval(loc);
+
+        const auto first = loc.iter();
+        for(std::size_t i=0; i<N; ++i)
+        {
+            auto rslt = T::invoke(loc);
+            if(rslt.is_err())
+            {
+                loc.reset(first);
+                return none();
+            }
+            retval += rslt.unwrap();
+        }
+        while(true)
+        {
+            auto rslt = T::invoke(loc);
+            if(rslt.is_err())
+            {
+                return ok(std::move(retval));
+            }
+            retval += rslt.unwrap();
+        }
+    }
+};
+
+template<typename T>
+struct repeat<T, unlimited>
+{
+    static result<region, none_t>
+    invoke(location& loc)
+    {
+        region retval(loc);
+        while(true)
+        {
+            auto rslt = T::invoke(loc);
+            if(rslt.is_err())
+            {
+                return ok(std::move(retval));
+            }
+            retval += rslt.unwrap();
+        }
+    }
+};
+
+} // detail
+} // toml
+#endif// TOML11_COMBINATOR_HPP