Revert "Hide most of non-public symbols by default (#984)"

This reverts commit da1c8d360e.

.clang-format

@@ -0,0 +1,47 @@
+---
+# BasedOnStyle:  Google
+AccessModifierOffset: -1
+ConstructorInitializerIndentWidth: 4
+AlignEscapedNewlinesLeft: true
+AlignTrailingComments: true
+AllowAllParametersOfDeclarationOnNextLine: true
+AllowShortIfStatementsOnASingleLine: false
+AllowShortLoopsOnASingleLine: false
+AlwaysBreakTemplateDeclarations: true
+AlwaysBreakBeforeMultilineStrings: true
+BreakBeforeBinaryOperators: false
+BreakBeforeTernaryOperators: true
+BreakConstructorInitializersBeforeComma: false
+BinPackParameters: true
+ColumnLimit:     80
+ConstructorInitializerAllOnOneLineOrOnePerLine: true
+DerivePointerBinding: true
+ExperimentalAutoDetectBinPacking: false
+IndentCaseLabels: true
+MaxEmptyLinesToKeep: 1
+NamespaceIndentation: None
+ObjCSpaceBeforeProtocolList: false
+PenaltyBreakBeforeFirstCallParameter: 1
+PenaltyBreakComment: 60
+PenaltyBreakString: 1000
+PenaltyBreakFirstLessLess: 120
+PenaltyExcessCharacter: 1000000
+PenaltyReturnTypeOnItsOwnLine: 200
+PointerBindsToType: true
+SpacesBeforeTrailingComments: 2
+Cpp11BracedListStyle: true
+Standard:        Cpp11
+IndentWidth:     2
+TabWidth:        8
+UseTab:          Never
+BreakBeforeBraces: Attach
+IndentFunctionDeclarationAfterType: true
+SpacesInParentheses: false
+SpacesInAngles:  false
+SpaceInEmptyParentheses: false
+SpacesInCStyleCastParentheses: false
+SpaceAfterControlStatementKeyword: true
+SpaceBeforeAssignmentOperators: true
+ContinuationIndentWidth: 4
+...
+

.codedocs

@@ -0,0 +1,50 @@
+# CodeDocs.xyz Configuration File
+
+# Optional project name, if left empty the GitHub repository name will be used.
+PROJECT_NAME =
+
+# One or more directories and files that contain example code to be included.
+EXAMPLE_PATH =
+
+# One or more directories and files to exclude from documentation generation.
+# Use relative paths with respect to the repository root directory.
+EXCLUDE = test/gtest-1.8.0/
+
+# One or more wildcard patterns to exclude files and directories from document
+# generation.
+EXCLUDE_PATTERNS =
+
+# One or more symbols to exclude from document generation. Symbols can be
+# namespaces, classes, or functions.
+EXCLUDE_SYMBOLS =
+
+# Override the default parser (language) used for each file extension.
+EXTENSION_MAPPING =
+
+# Set the wildcard patterns used to filter out the source-files.
+# If left blank the default is:
+# *.c, *.cc, *.cxx, *.cpp, *.c++, *.java, *.ii, *.ixx, *.ipp, *.i++, *.inl,
+# *.idl, *.ddl, *.odl, *.h, *.hh, *.hxx, *.hpp, *.h++, *.cs, *.d, *.php,
+# *.php4, *.php5, *.phtml, *.inc, *.m, *.markdown, *.md, *.mm, *.dox, *.py,
+# *.f90, *.f, *.for, *.tcl, *.vhd, *.vhdl, *.ucf, *.qsf, *.as and *.js.
+FILE_PATTERNS =
+
+# Hide undocumented class members.
+HIDE_UNDOC_MEMBERS =
+
+# Hide undocumented classes.
+HIDE_UNDOC_CLASSES =
+
+# Specify a markdown page whose contents should be used as the main page
+# (index.html). This will override a page marked as \mainpage. For example, a
+# README.md file usually serves as a useful main page.
+USE_MDFILE_AS_MAINPAGE = README.md
+
+# Specify external repository to link documentation with.
+# This is similar to Doxygen's TAGFILES option, but will automatically link to
+# tags of other repositories already using CodeDocs. List each repository to
+# link with by giving its location in the form of owner/repository.
+# For example:
+#   TAGLINKS = doxygen/doxygen CodeDocs/osg
+# Note: these repositories must already be built on CodeDocs.
+TAGLINKS =

.gitignore

@@ -0,0 +1,3 @@
+build/
+/tags
+/bazel-*

.travis.yml

@@ -0,0 +1,37 @@
+language: c++
+
+matrix:
+  include:
+    - os: linux
+      compiler: gcc
+    - os: osx
+      compiler: clang
+    - os: osx
+      compiler: gcc
+env:
+  - CTEST_OUTPUT_ON_FAILURE=1
+
+before_script:
+  - mkdir build
+  - cd build
+  - cmake ..
+  - cd ..
+script:
+  - cmake --build build
+  - cmake --build build --target test
+
+addons:
+  apt:
+    sources:
+    - ubuntu-toolchain-r-test
+    - llvm-toolchain-precise-3.9
+    packages:
+    - g++-4.9
+    - clang-3.9
+    update: true
+  homebrew:
+    packages:
+    - ccache
+    - gcc@4.9
+    - llvm@4
+    update: true

BUILD.bazel

@@ -0,0 +1,14 @@
+cc_library(
+    name = "yaml-cpp_internal",
+    visibility = ["//:__subpackages__"],
+    strip_include_prefix = "src",
+    hdrs = glob(["src/**/*.h"]),
+)
+
+cc_library(
+    name = "yaml-cpp",
+    visibility = ["//visibility:public"],
+    includes = ["include"],
+    hdrs = glob(["include/**/*.h"]),
+    srcs = glob(["src/**/*.cpp", "src/**/*.h"]),
+)

CMakeLists.txt

@@ -1,68 +1,174 @@
-cmake_minimum_required(VERSION 2.6)
+# 3.5 is actually available almost everywhere, but this a good minimum
+cmake_minimum_required(VERSION 3.4)
 
-project (YAML_CPP)
+# enable MSVC_RUNTIME_LIBRARY target property
+# see https://cmake.org/cmake/help/latest/policy/CMP0091.html
+if(POLICY CMP0091)
+  cmake_policy(SET CMP0091 NEW)
+endif()
 
-set(LIB_TYPE SHARED)
+project(YAML_CPP VERSION 0.7.0 LANGUAGES CXX)
 
-if(IPHONE)
-  set(CMAKE_OSX_SYSROOT iphoneos2.2.1)
-  set(LIB_TYPE)
-endif(IPHONE)
+include(CMakePackageConfigHelpers)
+include(CMakeDependentOption)
+include(CheckCXXCompilerFlag)
+include(GNUInstallDirs)
+include(CTest)
 
-if(CMAKE_COMPILER_IS_GNUCC)
-  set(CMAKE_CXX_FLAGS "-O2 -Wall -pedantic -Wextra")
-endif(CMAKE_COMPILER_IS_GNUCC)
+find_program(YAML_CPP_CLANG_FORMAT_EXE NAMES clang-format)
 
-set(YAML_CPP_VERSION_MAJOR "0")
-set(YAML_CPP_VERSION_MINOR "2")
-set(YAML_CPP_VERSION_PATCH "0")
-set(YAML_CPP_VERSION "${YAML_CPP_VERSION_MAJOR}.${YAML_CPP_VERSION_MINOR}.${YAML_CPP_VERSION_PATCH}")
+option(YAML_CPP_BUILD_CONTRIB "Enable yaml-cpp contrib in library" ON)
+option(YAML_CPP_BUILD_TOOLS "Enable parse tools" ON)
+option(YAML_BUILD_SHARED_LIBS "Build yaml-cpp shared library" ${BUILD_SHARED_LIBS})
 
-enable_testing()
+cmake_dependent_option(YAML_CPP_BUILD_TESTS
+  "Enable yaml-cpp tests" ON
+  "BUILD_TESTING;CMAKE_SOURCE_DIR STREQUAL PROJECT_SOURCE_DIR" OFF)
+cmake_dependent_option(YAML_CPP_INSTALL
+  "Enable generation of yaml-cpp install targets" ON
+  "CMAKE_SOURCE_DIR STREQUAL PROJECT_SOURCE_DIR" OFF)
+cmake_dependent_option(YAML_MSVC_SHARED_RT
+  "MSVC: Build yaml-cpp with shared runtime libs (/MD)" ON
+  "MSVC" OFF)
 
-if(WIN32)
-  set(_library_dir bin) # .dll are in PATH, like executables
-else(WIN32)
-  set(_library_dir lib)
-endif(WIN32)
+set(yaml-cpp-type STATIC)
+set(yaml-cpp-label-postfix "static")
+if (YAML_BUILD_SHARED_LIBS)
+  set(yaml-cpp-type SHARED)
+  set(yaml-cpp-label-postfix "shared")
+endif()
 
-set(INCLUDE_INSTALL_DIR include/yaml-cpp)
-set(LIB_INSTALL_DIR ${_library_dir}${LIB_SUFFIX})
+set(build-shared $<BOOL:${YAML_BUILD_SHARED_LIBS}>)
+set(build-windows-dll $<AND:$<BOOL:${CMAKE_HOST_WIN32}>,${build-shared}>)
+set(not-msvc $<NOT:$<CXX_COMPILER_ID:MSVC>>)
+set(msvc-shared_rt $<BOOL:${YAML_MSVC_SHARED_RT}>)
 
-#
-set(_INSTALL_DESTINATIONS
-	RUNTIME DESTINATION bin
-	LIBRARY DESTINATION ${LIB_INSTALL_DIR}
-	ARCHIVE DESTINATION lib${LIB_SUFFIX}
-)
-#
-file(GLOB public_headers include/*.h)
-file(GLOB private_headers src/*.h)
-file(GLOB sources src/*.cpp)
+if (NOT DEFINED CMAKE_MSVC_RUNTIME_LIBRARY)
+  set(CMAKE_MSVC_RUNTIME_LIBRARY
+    MultiThreaded$<$<CONFIG:Debug>:Debug>$<${msvc-shared_rt}:DLL>)
+endif()
+
+set(contrib-pattern "src/contrib/*.cpp")
+set(src-pattern "src/*.cpp")
+if (CMAKE_VERSION VERSION_GREATER 3.12)
+  list(INSERT contrib-pattern 0 CONFIGURE_DEPENDS)
+  list(INSERT src-pattern 0 CONFIGURE_DEPENDS)
+endif()
+
+file(GLOB yaml-cpp-contrib-sources ${contrib-pattern})
+file(GLOB yaml-cpp-sources ${src-pattern})
+
+set(msvc-rt $<TARGET_PROPERTY:MSVC_RUNTIME_LIBRARY>)
+
+set(msvc-rt-mtd-static $<STREQUAL:${msvc-rt},MultiThreadedDebug>)
+set(msvc-rt-mt-static $<STREQUAL:${msvc-rt},MultiThreaded>)
+
+set(msvc-rt-mtd-dll $<STREQUAL:${msvc-rt},MultiThreadedDebugDLL>)
+set(msvc-rt-mt-dll $<STREQUAL:${msvc-rt},MultiThreadedDLL>)
+
+set(backport-msvc-runtime $<VERSION_LESS:${CMAKE_VERSION},3.15>)
+
+add_library(yaml-cpp ${yaml-cpp-type} "")
+add_library(yaml-cpp::yaml-cpp ALIAS yaml-cpp)
+
+set_property(TARGET yaml-cpp
+  PROPERTY
+    MSVC_RUNTIME_LIBRARY ${CMAKE_MSVC_RUNTIME_LIBRARY})
+set_property(TARGET yaml-cpp
+  PROPERTY
+    CXX_STANDARD_REQUIRED ON)
+
+target_include_directories(yaml-cpp
+  PUBLIC
+    $<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/include>
+    $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>
+  PRIVATE
+    $<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/src>)
+
+if (NOT DEFINED CMAKE_CXX_STANDARD)
+  set_target_properties(yaml-cpp
+    PROPERTIES
+      CXX_STANDARD 11)
+endif()
+
+target_compile_options(yaml-cpp
+  PRIVATE
+    $<${not-msvc}:-Wall -Wextra -Wshadow -Weffc++ -Wno-long-long>
+    $<${not-msvc}:-pedantic -pedantic-errors>
+
+    $<$<AND:${backport-msvc-runtime},${msvc-rt-mtd-static}>:-MTd>
+    $<$<AND:${backport-msvc-runtime},${msvc-rt-mt-static}>:-MT>
+    $<$<AND:${backport-msvc-runtime},${msvc-rt-mtd-dll}>:-MDd>
+    $<$<AND:${backport-msvc-runtime},${msvc-rt-mt-dll}>:-MD>
+
+    # /wd4127 = disable warning C4127 "conditional expression is constant"
+    # http://msdn.microsoft.com/en-us/library/6t66728h.aspx
+    # /wd4355 = disable warning C4355 "'this' : used in base member initializer list
+    # http://msdn.microsoft.com/en-us/library/3c594ae3.aspx
+    $<$<CXX_COMPILER_ID:MSVC>:/W3 /wd4127 /wd4355>)
+
+target_compile_definitions(yaml-cpp
+  PRIVATE
+    $<${build-windows-dll}:${PROJECT_NAME}_DLL>
+    $<$<NOT:$<BOOL:${YAML_CPP_BUILD_CONTRIB}>>:YAML_CPP_NO_CONTRIB>)
+
+target_sources(yaml-cpp
+  PRIVATE
+    $<$<BOOL:${YAML_CPP_BUILD_CONTRIB}>:${yaml-cpp-contrib-sources}>
+    ${yaml-cpp-sources})
+
+if (NOT DEFINED CMAKE_DEBUG_POSTFIX)
+  set(CMAKE_DEBUG_POSTFIX "d")
+endif()
 
-include_directories(${YAML_CPP_SOURCE_DIR}/include)
-add_library(yaml-cpp
-	${LIB_TYPE}
-	${public_headers}
-	${private_headers}
-	${sources}
-)
 set_target_properties(yaml-cpp PROPERTIES
-	VERSION "${YAML_CPP_VERSION}"
-	SOVERSION "${YAML_CPP_VERSION_MAJOR}.${YAML_CPP_VERSION_MINOR}"
-)
+  VERSION "${PROJECT_VERSION}"
+  SOVERSION "${PROJECT_VERSION_MAJOR}.${PROJECT_VERSION_MINOR}"
+  PROJECT_LABEL "yaml-cpp ${yaml-cpp-label-postfix}"
+  DEBUG_POSTFIX "${CMAKE_DEBUG_POSTFIX}")
 
-install(TARGETS yaml-cpp ${_INSTALL_DESTINATIONS})
-install(
-	FILES ${public_headers}
-	DESTINATION ${INCLUDE_INSTALL_DIR}
-)
+configure_package_config_file(
+  "${PROJECT_SOURCE_DIR}/yaml-cpp-config.cmake.in"
+  "${PROJECT_BINARY_DIR}/yaml-cpp-config.cmake"
+  INSTALL_DESTINATION "${CMAKE_INSTALL_DATADIR}/cmake/yaml-cpp")
 
-if(UNIX)
-	set(PC_FILE ${CMAKE_BINARY_DIR}/yaml-cpp.pc)
-	configure_file("yaml-cpp.pc.cmake" ${PC_FILE} @ONLY)
-	install(FILES ${PC_FILE} DESTINATION ${LIB_INSTALL_DIR}/pkgconfig)
-endif(UNIX)
+write_basic_package_version_file(
+  "${PROJECT_BINARY_DIR}/yaml-cpp-config-version.cmake"
+  COMPATIBILITY AnyNewerVersion)
 
-add_subdirectory (yaml-reader)
-add_subdirectory (util)
+configure_file(yaml-cpp.pc.in yaml-cpp.pc @ONLY)
+
+if (YAML_CPP_INSTALL)
+	install(TARGETS yaml-cpp
+    EXPORT yaml-cpp-targets
+    RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
+    LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
+    ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR})
+	install(DIRECTORY ${PROJECT_SOURCE_DIR}/include/
+    DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
+		FILES_MATCHING PATTERN "*.h")
+  install(EXPORT yaml-cpp-targets
+    DESTINATION "${CMAKE_INSTALL_DATADIR}/cmake/yaml-cpp")
+	install(FILES
+		"${PROJECT_BINARY_DIR}/yaml-cpp-config.cmake"
+		"${PROJECT_BINARY_DIR}/yaml-cpp-config-version.cmake"
+    DESTINATION "${CMAKE_INSTALL_DATADIR}/cmake/yaml-cpp")
+  install(FILES "${PROJECT_BINARY_DIR}/yaml-cpp.pc"
+    DESTINATION ${CMAKE_INSTALL_DATADIR}/pkgconfig)
+endif()
+
+if(YAML_CPP_BUILD_TESTS)
+	add_subdirectory(test)
+endif()
+
+if(YAML_CPP_BUILD_TOOLS)
+	add_subdirectory(util)
+endif()
+
+if (YAML_CPP_CLANG_FORMAT_EXE)
+  add_custom_target(format
+    COMMAND clang-format --style=file -i $<TARGET_PROPERTY:yaml-cpp,SOURCES>
+    COMMAND_EXPAND_LISTS
+    COMMENT "Running clang-format"
+    VERBATIM)
+endif()

CONTRIBUTING.md

@@ -0,0 +1,26 @@
+# Style
+
+This project is formatted with [clang-format][fmt] using the style file at the root of the repository. Please run clang-format before sending a pull request.
+
+In general, try to follow the style of surrounding code. We mostly follow the [Google C++ style guide][cpp-style].
+
+Commit messages should be in the imperative mood, as described in the [Git contributing file][git-contrib]:
+
+> Describe your changes in imperative mood, e.g. "make xyzzy do frotz"
+> instead of "[This patch] makes xyzzy do frotz" or "[I] changed xyzzy
+> to do frotz", as if you are giving orders to the codebase to change
+> its behaviour.
+
+[fmt]: http://clang.llvm.org/docs/ClangFormat.html
+[cpp-style]: https://google.github.io/styleguide/cppguide.html
+[git-contrib]: http://git.kernel.org/cgit/git/git.git/tree/Documentation/SubmittingPatches?id=HEAD
+
+# Tests
+
+Please verify the tests pass by running the target `tests/run_tests`.
+
+If you are adding functionality, add tests accordingly.
+
+# Pull request process
+
+Every pull request undergoes a code review. Unfortunately, github's code review process isn't great, but we'll manage. During the code review, if you make changes, add new commits to the pull request for each change. Once the code review is complete, rebase against the master branch and squash into a single commit.

LICENSE

@@ -1,19 +1,19 @@
-Copyright (c) 2008 Jesse Beder.
-
-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.
+Copyright (c) 2008-2015 Jesse Beder.
+
+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.

README.md

@@ -0,0 +1,62 @@
+# yaml-cpp [![Build Status](https://travis-ci.org/jbeder/yaml-cpp.svg?branch=master)](https://travis-ci.org/jbeder/yaml-cpp) [![Documentation](https://codedocs.xyz/jbeder/yaml-cpp.svg)](https://codedocs.xyz/jbeder/yaml-cpp/)
+
+yaml-cpp is a [YAML](http://www.yaml.org/) parser and emitter in C++ matching the [YAML 1.2 spec](http://www.yaml.org/spec/1.2/spec.html).
+
+To get a feel for how it can be used, see the [Tutorial](https://github.com/jbeder/yaml-cpp/wiki/Tutorial) or [How to Emit YAML](https://github.com/jbeder/yaml-cpp/wiki/How-To-Emit-YAML). For the old API (version < 0.5.0), see [How To Parse A Document](https://github.com/jbeder/yaml-cpp/wiki/How-To-Parse-A-Document-(Old-API)).
+
+# Problems? #
+
+If you find a bug, post an [issue](https://github.com/jbeder/yaml-cpp/issues)! If you have questions about how to use yaml-cpp, please post it on http://stackoverflow.com and tag it [`yaml-cpp`](http://stackoverflow.com/questions/tagged/yaml-cpp).
+
+# How to Build #
+
+yaml-cpp uses [CMake](http://www.cmake.org) to support cross-platform building. The basic steps to build are:
+
+1. Download and install [CMake](http://www.cmake.org) (Resources -> Download).
+
+**Note:** If you don't use the provided installer for your platform, make sure that you add CMake's bin folder to your path.
+
+2. Navigate into the source directory, and type:
+
+```
+mkdir build
+cd build
+```
+
+3. Run CMake. The basic syntax is:
+
+```
+cmake [-G generator] [-DYAML_BUILD_SHARED_LIBS=ON|OFF] ..
+```
+
+  * The `generator` is whatever type of build system you'd like to use. To see a full list of generators on your platform, just run `cmake` (with no arguments). For example:
+    * On Windows, you might use "Visual Studio 12 2013" to generate a Visual Studio 2013 solution or "Visual Studio 14 2015 Win64" to generate a 64-bit Visual Studio 2015 solution.
+    * On OS X, you might use "Xcode" to generate an Xcode project
+    * On a UNIX-y system, simply omit the option to generate a makefile
+
+  * yaml-cpp defaults to building a static library, but you may build a shared library by specifying `-DYAML_BUILD_SHARED_LIBS=ON`.
+
+  * For more options on customizing the build, see the [CMakeLists.txt](https://github.com/jbeder/yaml-cpp/blob/master/CMakeLists.txt) file.
+
+4. Build it!
+
+5. To clean up, just remove the `build` directory.
+
+# Recent Release #
+
+[yaml-cpp 0.6.0](https://github.com/jbeder/yaml-cpp/releases/tag/yaml-cpp-0.6.0) has been released! This release requires C++11, and no longer depends on Boost.
+
+[yaml-cpp 0.3.0](https://github.com/jbeder/yaml-cpp/releases/tag/release-0.3.0) is still available if you want the old API.
+
+**The old API will continue to be supported, and will still receive bugfixes!** The 0.3.x and 0.4.x versions will be old API releases, and 0.5.x and above will all be new API releases.
+
+# API Documentation 
+
+The autogenerated API reference is hosted on [CodeDocs](https://codedocs.xyz/jbeder/yaml-cpp/index.html)
+
+# Third Party Integrations
+
+The following projects are not officially supported:
+
+- [Qt wrapper](https://gist.github.com/brcha/d392b2fe5f1e427cc8a6)
+- [UnrealEngine Wrapper](https://github.com/jwindgassen/UnrealYAML)

WORKSPACE

@@ -0,0 +1,10 @@
+workspace(name = "com_github_jbeder_yaml_cpp")
+
+load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
+
+http_archive(
+    name = "com_google_googletest",
+    strip_prefix = "googletest-release-1.8.1",
+    url = "https://github.com/google/googletest/archive/release-1.8.1.tar.gz",
+    sha256 = "9bf1fe5182a604b4135edc1a425ae356c9ad15e9b23f9f12a02e80184c3a249c",
+)

appveyor.yml

@@ -0,0 +1,28 @@
+version: 1.0.{build}
+
+environment:
+  matrix:
+    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
+      CMAKE_GENERATOR: Visual Studio 14 2015
+      CMAKE_PLATFORM: win32
+    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
+      CMAKE_GENERATOR: Visual Studio 14 2015
+      CMAKE_PLATFORM: x64
+    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
+      CMAKE_GENERATOR: Visual Studio 15 2017
+      CMAKE_PLATFORM: win32
+    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
+      CMAKE_GENERATOR: Visual Studio 15 2017
+      CMAKE_PLATFORM: x64
+
+before_build:
+   - cmd: mkdir build
+   - cmd: cd build
+   - cmd: cmake .. -G "%CMAKE_GENERATOR%" -DCMAKE_GENERATOR_PLATFORM=%CMAKE_PLATFORM%
+   - cmd: cd ..
+
+build_script:
+   - cmake --build build
+test_script:
+   - cmd: cd build
+   - ctest

docs/Breaking-Changes.md

@@ -0,0 +1,52 @@
+# The following is a list of breaking changes to yaml-cpp, by version #
+
+# New API #
+
+## HEAD ##
+
+  * Throws an exception when trying to parse a negative number as an unsigned integer.
+  * Supports the `as<int8_t>`/`as<uint8_t>`, which throws an exception when the value exceeds the range of `int8_t`/`uint8_t`.
+
+## 0.6.0 ##
+
+  * Requires C++11.
+
+## 0.5.3 ##
+
+_none_
+
+## 0.5.2 ##
+
+_none_
+
+## 0.5.1 ##
+
+  * `Node::clear` was replaced by `Node::reset`, which takes an optional node, similar to smart pointers.
+
+## 0.5.0 ##
+
+Initial version of the new API.
+
+# Old API #
+
+## 0.3.0 ##
+
+_none_
+
+## 0.2.7 ##
+
+  * `YAML::Binary` now takes `const unsigned char *` for the binary data (instead of `const char *`).
+
+## 0.2.6 ##
+
+  * `Node::GetType()` is now `Node::Type()`, and returns an enum `NodeType::value`, where:
+> > ` struct NodeType { enum value { Null, Scalar, Sequence, Map }; }; `
+  * `Node::GetTag()` is now `Node::Tag()`
+  * `Node::Identity()` is removed, and `Node::IsAlias()` and `Node::IsReferenced()` have been merged into `Node::IsAliased()`. The reason: there's no reason to distinguish an alias node from its anchor - whichever happens to be emitted first will be the anchor, and the rest will be aliases.
+  * `Node::Read<T>` is now `Node::to<T>`. This wasn't a documented function, so it shouldn't break anything.
+  * `Node`'s comparison operators (for example, `operator == (const Node&, const T&)`) have all been removed. These weren't documented either (they were just used for the tests), so this shouldn't break anything either.
+  * The emitter no longer produces the document start by default - if you want it, you can supply it with the manipulator `YAML::BeginDoc`.
+
+## 0.2.5 ##
+
+This wiki was started with v0.2.5.

docs/How-To-Emit-YAML.md

@@ -0,0 +1,230 @@
+## Contents ##
+
+
+
+# Basic Emitting #
+
+The model for emitting YAML is `std::ostream` manipulators. A `YAML::Emitter` objects acts as an output stream, and its output can be retrieved through the `c_str()` function (as in `std::string`). For a simple example:
+
+```cpp
+#include "yaml-cpp/yaml.h"
+
+int main()
+{
+   YAML::Emitter out;
+   out << "Hello, World!";
+   
+   std::cout << "Here's the output YAML:\n" << out.c_str(); // prints "Hello, World!"
+   return 0;
+}
+```
+
+# Simple Lists and Maps #
+
+A `YAML::Emitter` object acts as a state machine, and we use manipulators to move it between states. Here's a simple sequence:
+
+```cpp
+YAML::Emitter out;
+out << YAML::BeginSeq;
+out << "eggs";
+out << "bread";
+out << "milk";
+out << YAML::EndSeq;
+```
+
+produces
+
+```yaml
+- eggs
+- bread
+- milk
+```
+
+A simple map:
+
+```cpp
+YAML::Emitter out;
+out << YAML::BeginMap;
+out << YAML::Key << "name";
+out << YAML::Value << "Ryan Braun";
+out << YAML::Key << "position";
+out << YAML::Value << "LF";
+out << YAML::EndMap;
+```
+
+produces
+
+```yaml
+name: Ryan Braun
+position: LF
+```
+
+These elements can, of course, be nested:
+
+```cpp
+YAML::Emitter out;
+out << YAML::BeginMap;
+out << YAML::Key << "name";
+out << YAML::Value << "Barack Obama";
+out << YAML::Key << "children";
+out << YAML::Value << YAML::BeginSeq << "Sasha" << "Malia" << YAML::EndSeq;
+out << YAML::EndMap;
+```
+
+produces
+
+```yaml
+name: Barack Obama
+children:
+  - Sasha
+  - Malia
+```
+
+# Using Manipulators #
+
+To deviate from standard formatting, you can use manipulators to modify the output format. For example,
+
+```cpp
+YAML::Emitter out;
+out << YAML::Literal << "A\n B\n  C";
+```
+
+produces
+
+```yaml
+|
+A
+ B
+  C
+```
+and
+
+```cpp
+YAML::Emitter out;
+out << YAML::Flow;
+out << YAML::BeginSeq << 2 << 3 << 5 << 7 << 11 << YAML::EndSeq;
+```
+
+produces
+
+```yaml
+[2, 3, 5, 7, 11]
+```
+
+Comments act like manipulators:
+
+```cpp
+YAML::Emitter out;
+out << YAML::BeginMap;
+out << YAML::Key << "method";
+out << YAML::Value << "least squares";
+out << YAML::Comment("should we change this method?");
+out << YAML::EndMap;
+```
+
+produces
+
+```yaml
+method: least squares  # should we change this method?
+```
+
+And so do aliases/anchors:
+
+```cpp
+YAML::Emitter out;
+out << YAML::BeginSeq;
+out << YAML::Anchor("fred");
+out << YAML::BeginMap;
+out << YAML::Key << "name" << YAML::Value << "Fred";
+out << YAML::Key << "age" << YAML::Value << "42";
+out << YAML::EndMap;
+out << YAML::Alias("fred");
+out << YAML::EndSeq;
+```
+
+produces
+
+```yaml
+- &fred
+  name: Fred
+  age: 42
+- *fred
+```
+
+# STL Containers, and Other Overloads #
+We overload `operator <<` for `std::vector`, `std::list`, and `std::map`, so you can write stuff like:
+
+```cpp
+std::vector <int> squares;
+squares.push_back(1);
+squares.push_back(4);
+squares.push_back(9);
+squares.push_back(16);
+
+std::map <std::string, int> ages;
+ages["Daniel"] = 26;
+ages["Jesse"] = 24;
+
+YAML::Emitter out;
+out << YAML::BeginSeq;
+out << YAML::Flow << squares;
+out << ages;
+out << YAML::EndSeq;
+```
+
+produces
+
+```yaml
+- [1, 4, 9, 16]
+-
+  Daniel: 26
+  Jesse: 24
+```
+
+Of course, you can overload `operator <<` for your own types:
+
+```cpp
+struct Vec3 { int x; int y; int z; };
+YAML::Emitter& operator << (YAML::Emitter& out, const Vec3& v) {
+	out << YAML::Flow;
+	out << YAML::BeginSeq << v.x << v.y << v.z << YAML::EndSeq;
+	return out;
+}
+```
+and it'll play nicely with everything else.
+
+# Using Existing Nodes #
+
+We also overload `operator << ` for `YAML::Node`s in both APIs, so you can output existing Nodes. Of course, Nodes in the old API are read-only, so it's tricky to emit them if you want to modify them. So use the new API!
+
+# Output Encoding #
+
+The output is always UTF-8. By default, yaml-cpp will output as much as it can without escaping any characters. If you want to restrict the output to ASCII, use the manipulator `YAML::EscapeNonAscii`:
+
+```cpp
+emitter.SetOutputCharset(YAML::EscapeNonAscii);
+```
+
+# Lifetime of Manipulators #
+
+Manipulators affect the **next** output item in the stream. If that item is a `BeginSeq` or `BeginMap`, the manipulator lasts until the corresponding `EndSeq` or `EndMap`. (However, within that sequence or map, you can override the manipulator locally, etc.; in effect, there's a "manipulator stack" behind the scenes.)
+
+If you want to permanently change a setting, there are global setters corresponding to each manipulator, e.g.:
+
+```cpp
+YAML::Emitter out;
+out.SetIndent(4);
+out.SetMapStyle(YAML::Flow);
+```
+
+# When Something Goes Wrong #
+
+If something goes wrong when you're emitting a document, it must be something like forgetting a `YAML::EndSeq`, or a misplaced `YAML::Key`. In this case, emitting silently fails (no more output is emitted) and an error flag is set. For example:
+
+```cpp
+YAML::Emitter out;
+assert(out.good());
+out << YAML::Key;
+assert(!out.good());
+std::cout << "Emitter error: " << out.GetLastError() << "\n";
+```

docs/How-To-Parse-A-Document-(Old-API).md

@@ -0,0 +1,265 @@
+_The following describes the old API. For the new API, see the [Tutorial](https://github.com/jbeder/yaml-cpp/wiki/Tutorial)._
+
+## Contents ##
+
+
+# Basic Parsing #
+
+The parser accepts streams, not file names, so you need to first load the file. Since a YAML file can contain many documents, you can grab them one-by-one. A simple way to parse a YAML file might be:
+
+```
+#include <fstream>
+#include "yaml-cpp/yaml.h"
+
+int main()
+{
+    std::ifstream fin("test.yaml");
+    YAML::Parser parser(fin);
+
+    YAML::Node doc;
+    while(parser.GetNextDocument(doc)) {
+       // ...
+    }
+
+    return 0;
+}
+```
+
+# Reading From the Document #
+
+Suppose we have a document consisting only of a scalar. We can read that scalar like this:
+
+```
+YAML::Node doc;    // let's say we've already parsed this document
+std::string scalar;
+doc >> scalar;
+std::cout << "That scalar was: " << scalar << std::endl;
+```
+
+How about sequences? Let's say our document now consists only of a sequences of scalars. We can use an iterator:
+
+```
+YAML::Node doc;    // already parsed
+for(YAML::Iterator it=doc.begin();it!=doc.end();++it) {
+    std::string scalar;
+    *it >> scalar;
+    std::cout << "Found scalar: " << scalar << std::endl;
+}
+```
+
+... or we can just loop through:
+
+```
+YAML::Node doc;    // already parsed
+for(unsigned i=0;i<doc.size();i++) {
+    std::string scalar;
+    doc[i] >> scalar;
+    std::cout << "Found scalar: " << scalar << std::endl;
+}
+```
+
+And finally maps. For now, let's say our document is a map with all keys/values being scalars. Again, we can iterate:
+
+```
+YAML::Node doc;    // already parsed
+for(YAML::Iterator it=doc.begin();it!=doc.end();++it) {
+    std::string key, value;
+    it.first() >> key;
+    it.second() >> value;
+    std::cout << "Key: " << key << ", value: " << value << std::endl;
+}
+```
+
+Note that dereferencing a map iterator is undefined; instead, use the `first` and `second` methods to get the key and value nodes, respectively.
+
+Alternatively, we can pick off the values one-by-one, if we know the keys:
+
+```
+YAML::Node doc;    // already parsed
+std::string name;
+doc["name"] >> name;
+int age;
+doc["age"] >> age;
+std::cout << "Found entry with name '" << name << "' and age '" << age << "'\n";
+```
+
+One thing to be keep in mind: reading a map by key (as immediately above) requires looping through all entries until we find the right key, which is an O(n) operation. So if you're reading the entire map this way, it'll be O(n^2). For small n, this isn't a big deal, but I wouldn't recommend reading maps with a very large number of entries (>100, say) this way.
+
+## Optional Keys ##
+
+If you try to access a key that doesn't exist, `yaml-cpp` throws an exception (see [When Something Goes Wrong](https://github.com/jbeder/yaml-cpp/wiki/How-To-Parse-A-Document-(Old-API)#When_Something_Goes_Wrong). If you have optional keys, it's often easier to use `FindValue` instead of `operator[]`:
+
+```
+YAML::Node doc;    // already parsed
+if(const YAML::Node *pName = doc.FindValue("name")) {
+    std::string name;
+    *pName >> name;
+    std::cout << "Key 'name' exists, with value '" << name << "'\n";
+} else {
+    std::cout << "Key 'name' doesn't exist\n";
+}
+```
+
+# Getting More Complicated #
+
+The above three methods can be combined to read from an arbitrary document. But we can make life a lot easier. Suppose we're reading 3-vectors (i.e., vectors with three components), so we've got a structure looking like this:
+
+```
+struct Vec3 {
+    float x, y, z;
+};
+```
+
+We can read this in one operation by overloading the extraction (>>) operator:
+
+```
+void operator >> (const YAML::Node& node, Vec3& v)
+{
+    node[0] >> v.x;
+    node[1] >> v.y;
+    node[2] >> v.z;
+}
+
+// now it's a piece of cake to read it
+YAML::Node doc;    // already parsed
+Vec3 v;
+doc >> v;
+std::cout << "Here's the vector: (" << v.x << ", " << v.y << ", " << v.z << ")\n";
+```
+
+# A Complete Example #
+
+Here's a complete example of how to parse a complex YAML file:
+
+`monsters.yaml`
+
+```
+- name: Ogre
+  position: [0, 5, 0]
+  powers:
+    - name: Club
+      damage: 10
+    - name: Fist
+      damage: 8
+- name: Dragon
+  position: [1, 0, 10]
+  powers:
+    - name: Fire Breath
+      damage: 25
+    - name: Claws
+      damage: 15
+- name: Wizard
+  position: [5, -3, 0]
+  powers:
+    - name: Acid Rain
+      damage: 50
+    - name: Staff
+      damage: 3
+```
+
+`main.cpp`
+
+```
+#include "yaml-cpp/yaml.h"
+#include <iostream>
+#include <fstream>
+#include <string>
+#include <vector>
+
+// our data types
+struct Vec3 {
+   float x, y, z;
+};
+
+struct Power {
+   std::string name;
+   int damage;
+};
+
+struct Monster {
+   std::string name;
+   Vec3 position;
+   std::vector <Power> powers;
+};
+
+// now the extraction operators for these types
+void operator >> (const YAML::Node& node, Vec3& v) {
+   node[0] >> v.x;
+   node[1] >> v.y;
+   node[2] >> v.z;
+}
+
+void operator >> (const YAML::Node& node, Power& power) {
+   node["name"] >> power.name;
+   node["damage"] >> power.damage;
+}
+
+void operator >> (const YAML::Node& node, Monster& monster) {
+   node["name"] >> monster.name;
+   node["position"] >> monster.position;
+   const YAML::Node& powers = node["powers"];
+   for(unsigned i=0;i<powers.size();i++) {
+      Power power;
+      powers[i] >> power;
+      monster.powers.push_back(power);
+   }
+}
+
+int main()
+{
+   std::ifstream fin("monsters.yaml");
+   YAML::Parser parser(fin);
+   YAML::Node doc;
+   parser.GetNextDocument(doc);
+   for(unsigned i=0;i<doc.size();i++) {
+      Monster monster;
+      doc[i] >> monster;
+      std::cout << monster.name << "\n";
+   }
+
+   return 0;
+}
+```
+
+# When Something Goes Wrong #
+
+... we throw an exception (all exceptions are derived from `YAML::Exception`). If there's a parsing exception (i.e., a malformed YAML document), we throw a `YAML::ParserException`:
+
+```
+try {
+    std::ifstream fin("test.yaml");
+    YAML::Parser parser(fin);
+    YAML::Node doc;
+    parser.GetNextDocument(doc);
+    // do stuff
+} catch(YAML::ParserException& e) {
+    std::cout << e.what() << "\n";
+}
+```
+
+If you make a programming error (say, trying to read a scalar from a sequence node, or grabbing a key that doesn't exist), we throw some kind of `YAML::RepresentationException`. To prevent this, you can check what kind of node something is:
+
+```
+    YAML::Node node;
+    YAML::NodeType::value type = node.Type();  // should be:
+                                               // YAML::NodeType::Null
+                                               // YAML::NodeType::Scalar
+                                               // YAML::NodeType::Sequence
+                                               // YAML::NodeType::Map
+```
+
+# Note about copying `YAML::Node` #
+
+Currently `YAML::Node` is non-copyable, so you need to do something like
+
+```
+    const YAML::Node& node = doc["whatever"];
+```
+
+This is intended behavior. If you want to copy a node, use the `Clone` function:
+
+```
+    std::auto_ptr<YAML::Node> pCopy = myOtherNode.Clone();
+```
+
+The intent is that if you'd like to keep a `YAML::Node` around for longer than the document will stay in scope, you can clone it and store it as long as you like.

docs/Strings.md

@@ -0,0 +1,18 @@
+# Encodings and `yaml-cpp` #
+
+`yaml-cpp` will parse any file as specified by the [YAML 1.2 spec](http://www.yaml.org/spec/1.2/spec.html#id2570322). Internally, it stores all strings in UTF-8, and representation is done with UTF-8. This means that in
+
+```
+std::string str;
+node >> str;
+```
+
+`str` will be UTF-8. Similarly, if you're accessing a map by string key, you need to pass the key in UTF-8. If your application uses a different encoding, you need to convert to and from UTF-8 to work with `yaml-cpp`. (It's possible we'll add some small conversion functions, but for now it's restricted.)
+
+---
+
+For convenience, Richard Weeks has kindly provided a google gadget that converts Unicode to a string literal. It's a Google Gadget, so unfortunately it does not work on GitHub. Patches welcome to port it to a usable format here:
+
+```
+<wiki:gadget url="http://hosting.gmodules.com/ig/gadgets/file/111180078345548400783/c-style-utf8-encoder.xml"/>
+```

docs/Tutorial.md

@@ -0,0 +1,201 @@
+# Introduction #
+
+A typical example, loading a configuration file, might look like this:
+
+```cpp
+YAML::Node config = YAML::LoadFile("config.yaml");
+
+if (config["lastLogin"]) {
+  std::cout << "Last logged in: " << config["lastLogin"].as<DateTime>() << "\n";
+}
+
+const std::string username = config["username"].as<std::string>();
+const std::string password = config["password"].as<std::string>();
+login(username, password);
+config["lastLogin"] = getCurrentDateTime();
+
+std::ofstream fout("config.yaml");
+fout << config;
+```
+
+# Basic Parsing and Node Editing #
+
+All nodes in a YAML document (including the root) are represented by `YAML::Node`. You can check what kind it is:
+
+```cpp
+YAML::Node node = YAML::Load("[1, 2, 3]");
+assert(node.Type() == YAML::NodeType::Sequence);
+assert(node.IsSequence());  // a shortcut!
+```
+
+Collection nodes (sequences and maps) act somewhat like STL vectors and maps:
+
+```cpp
+YAML::Node primes = YAML::Load("[2, 3, 5, 7, 11]");
+for (std::size_t i=0;i<primes.size();i++) {
+  std::cout << primes[i].as<int>() << "\n";
+}
+// or:
+for (YAML::const_iterator it=primes.begin();it!=primes.end();++it) {
+  std::cout << it->as<int>() << "\n";
+}
+
+primes.push_back(13);
+assert(primes.size() == 6);
+```
+
+and
+
+```cpp
+YAML::Node lineup = YAML::Load("{1B: Prince Fielder, 2B: Rickie Weeks, LF: Ryan Braun}");
+for(YAML::const_iterator it=lineup.begin();it!=lineup.end();++it) {
+  std::cout << "Playing at " << it->first.as<std::string>() << " is " << it->second.as<std::string>() << "\n";
+}
+
+lineup["RF"] = "Corey Hart";
+lineup["C"] = "Jonathan Lucroy";
+assert(lineup.size() == 5);
+```
+
+Querying for keys does **not** create them automatically (this makes handling optional map entries very easy)
+
+```cpp
+YAML::Node node = YAML::Load("{name: Brewers, city: Milwaukee}");
+if (node["name"]) {
+  std::cout << node["name"].as<std::string>() << "\n";
+}
+if (node["mascot"]) {
+  std::cout << node["mascot"].as<std::string>() << "\n";
+}
+assert(node.size() == 2); // the previous call didn't create a node
+```
+
+If you're not sure what kind of data you're getting, you can query the type of a node:
+
+```cpp
+switch (node.Type()) {
+  case Null: // ...
+  case Scalar: // ...
+  case Sequence: // ...
+  case Map: // ...
+  case Undefined: // ...
+}
+```
+
+or ask directly whether it's a particular type, e.g.:
+
+```cpp
+if (node.IsSequence()) {
+  // ...
+}
+```
+
+# Building Nodes #
+
+You can build `YAML::Node` from scratch:
+
+```cpp
+YAML::Node node;  // starts out as null
+node["key"] = "value";  // it now is a map node
+node["seq"].push_back("first element");  // node["seq"] automatically becomes a sequence
+node["seq"].push_back("second element");
+
+node["mirror"] = node["seq"][0];  // this creates an alias
+node["seq"][0] = "1st element";  // this also changes node["mirror"]
+node["mirror"] = "element #1";  // and this changes node["seq"][0] - they're really the "same" node
+
+node["self"] = node;  // you can even create self-aliases
+node[node["mirror"]] = node["seq"];  // and strange loops :)
+```
+
+The above node is now:
+
+```yaml
+&1
+key: value
+&2 seq: [&3 "element #1", second element]
+mirror: *3
+self: *1
+*3 : *2
+```
+
+# How Sequences Turn Into Maps #
+
+Sequences can be turned into maps by asking for non-integer keys. For example,
+
+```cpp
+YAML::Node node  = YAML::Load("[1, 2, 3]");
+node[1] = 5;  // still a sequence, [1, 5, 3]
+node.push_back(-3) // still a sequence, [1, 5, 3, -3]
+node["key"] = "value"; // now it's a map! {0: 1, 1: 5, 2: 3, 3: -3, key: value}
+```
+
+Indexing a sequence node by an index that's not in its range will _usually_ turn it into a map, but if the index is one past the end of the sequence, then the sequence will grow by one to accommodate it. (That's the **only** exception to this rule.) For example,
+
+```cpp
+YAML::Node node = YAML::Load("[1, 2, 3]");
+node[3] = 4; // still a sequence, [1, 2, 3, 4]
+node[10] = 10;  // now it's a map! {0: 1, 1: 2, 2: 3, 3: 4, 10: 10}
+```
+
+# Converting To/From Native Data Types #
+
+Yaml-cpp has built-in conversion to and from most built-in data types, as well as `std::vector`, `std::list`, and `std::map`. The following examples demonstrate when those conversions are used:
+
+```cpp
+YAML::Node node = YAML::Load("{pi: 3.14159, [0, 1]: integers}");
+
+// this needs the conversion from Node to double
+double pi = node["pi"].as<double>();
+
+// this needs the conversion from double to Node
+node["e"] = 2.71828;
+
+// this needs the conversion from Node to std::vector<int> (*not* the other way around!)
+std::vector<int> v;
+v.push_back(0);
+v.push_back(1);
+std::string str = node[v].as<std::string>();
+```
+
+To use yaml-cpp with your own data types, you need to specialize the YAML::convert<> template class. For example, suppose you had a simple `Vec3` class:
+
+```cpp
+struct Vec3 { double x, y, z; /* etc - make sure you have overloaded operator== */ };
+```
+
+You could write
+
+```cpp
+namespace YAML {
+template<>
+struct convert<Vec3> {
+  static Node encode(const Vec3& rhs) {
+    Node node;
+    node.push_back(rhs.x);
+    node.push_back(rhs.y);
+    node.push_back(rhs.z);
+    return node;
+  }
+
+  static bool decode(const Node& node, Vec3& rhs) {
+    if(!node.IsSequence() || node.size() != 3) {
+      return false;
+    }
+
+    rhs.x = node[0].as<double>();
+    rhs.y = node[1].as<double>();
+    rhs.z = node[2].as<double>();
+    return true;
+  }
+};
+}
+```
+
+Then you could use `Vec3` wherever you could use any other type:
+
+```cpp
+YAML::Node node = YAML::Load("start: [1, 3, 0]");
+Vec3 v = node["start"].as<Vec3>();
+node["end"] = Vec3(2, -1, 0);
+```

docs/_config.yml

@@ -0,0 +1 @@
+theme: jekyll-theme-slate

docs/index.md

@@ -0,0 +1 @@
+To learn how to use the library, see the [Tutorial](https://github.com/jbeder/yaml-cpp/wiki/Tutorial) and [How To Emit YAML](https://github.com/jbeder/yaml-cpp/wiki/How-To-Emit-YAML)

include/conversion.h

@@ -1,43 +0,0 @@
-#pragma once
-
-#ifndef CONVERSION_H_62B23520_7C8E_11DE_8A39_0800200C9A66
-#define CONVERSION_H_62B23520_7C8E_11DE_8A39_0800200C9A66
-
-
-#include "null.h"
-#include <string>
-#include <sstream>
-
-namespace YAML
-{
-	inline bool Convert(const std::string& input, std::string& output) {
-		output = input;
-		return true;
-	}
-	
-	bool Convert(const std::string& input, bool& output);
-	bool Convert(const std::string& input, _Null& output);
-	
-#define YAML_MAKE_STREAM_CONVERT(type) \
-	inline bool Convert(const std::string& input, type& output) { \
-		std::stringstream stream(input); \
-		stream >> output; \
-		return !stream.fail(); \
-	}
-	
-	YAML_MAKE_STREAM_CONVERT(char)
-	YAML_MAKE_STREAM_CONVERT(unsigned char)
-	YAML_MAKE_STREAM_CONVERT(int)
-	YAML_MAKE_STREAM_CONVERT(unsigned int)
-	YAML_MAKE_STREAM_CONVERT(short)
-	YAML_MAKE_STREAM_CONVERT(unsigned short)
-	YAML_MAKE_STREAM_CONVERT(long)
-	YAML_MAKE_STREAM_CONVERT(unsigned long)
-	YAML_MAKE_STREAM_CONVERT(float)
-	YAML_MAKE_STREAM_CONVERT(double)
-	YAML_MAKE_STREAM_CONVERT(long double)
-	
-#undef YAML_MAKE_STREAM_CONVERT
-}
-
-#endif // CONVERSION_H_62B23520_7C8E_11DE_8A39_0800200C9A66

include/crt.h

@@ -1,17 +0,0 @@
-#pragma once
-
-#ifndef CRT_H_62B23520_7C8E_11DE_8A39_0800200C9A66
-#define CRT_H_62B23520_7C8E_11DE_8A39_0800200C9A66
-
-
-// for detecting memory leaks
-#ifdef _DEBUG
-
-#define _CRTDBG_MAP_ALLOC
-#include <stdlib.h>
-#include <crtdbg.h>
-
-#endif // _DEBUG
-
-
-#endif // CRT_H_62B23520_7C8E_11DE_8A39_0800200C9A66

include/emitter.h

@@ -1,94 +0,0 @@
-#pragma once
-
-#ifndef EMITTER_H_62B23520_7C8E_11DE_8A39_0800200C9A66
-#define EMITTER_H_62B23520_7C8E_11DE_8A39_0800200C9A66
-
-
-#include "emittermanip.h"
-#include "ostream.h"
-#include "null.h"
-#include <memory>
-#include <string>
-
-namespace YAML
-{
-	class EmitterState;
-	
-	class Emitter
-	{
-	public:
-		Emitter();
-		~Emitter();
-		
-		// output
-		const char *c_str() const;
-		unsigned size() const;
-		
-		// state checking
-		bool good() const;
-		const std::string GetLastError() const;
-		
-		// global setters
-		bool SetStringFormat(EMITTER_MANIP value);
-		bool SetBoolFormat(EMITTER_MANIP value);
-		bool SetIntBase(EMITTER_MANIP value);
-		bool SetSeqFormat(EMITTER_MANIP value);
-		bool SetMapFormat(EMITTER_MANIP value);
-		bool SetIndent(unsigned n);
-		bool SetPreCommentIndent(unsigned n);
-		bool SetPostCommentIndent(unsigned n);
-		
-		// local setters
-		Emitter& SetLocalValue(EMITTER_MANIP value);
-		Emitter& SetLocalIndent(const _Indent& indent);
-		
-		// overloads of write
-		Emitter& Write(const std::string& str);
-		Emitter& Write(const char *str);
-		Emitter& Write(int i);
-		Emitter& Write(bool b);
-		Emitter& Write(float f);
-		Emitter& Write(double d);
-		Emitter& Write(const _Alias& alias);
-		Emitter& Write(const _Anchor& anchor);
-		Emitter& Write(const _Comment& comment);
-		Emitter& Write(const _Null& null);
-		
-	private:
-		enum ATOMIC_TYPE { AT_SCALAR, AT_SEQ, AT_BLOCK_SEQ, AT_FLOW_SEQ, AT_MAP, AT_BLOCK_MAP, AT_FLOW_MAP };
-		
-		void PreAtomicWrite();
-		bool GotoNextPreAtomicState();
-		void PostAtomicWrite();
-		void EmitSeparationIfNecessary();
-		
-		void EmitBeginSeq();
-		void EmitEndSeq();
-		void EmitBeginMap();
-		void EmitEndMap();
-		void EmitKey();
-		void EmitValue();
-		
-	private:
-		ostream m_stream;
-		std::auto_ptr <EmitterState> m_pState;
-	};
-	
-	// overloads of insertion
-	template <typename T>
-	inline Emitter& operator << (Emitter& emitter, T v) {
-		return emitter.Write(v);
-	}
-
-	template <>
-	inline Emitter& operator << (Emitter& emitter, EMITTER_MANIP value) {
-		return emitter.SetLocalValue(value);
-	}
-	
-	template <>
-	inline Emitter& operator << (Emitter& emitter, _Indent indent) {
-		return emitter.SetLocalIndent(indent);
-	}
-}
-
-#endif // EMITTER_H_62B23520_7C8E_11DE_8A39_0800200C9A66

include/emittermanip.h

@@ -1,90 +0,0 @@
-#pragma once
-
-#ifndef EMITTERMANIP_H_62B23520_7C8E_11DE_8A39_0800200C9A66
-#define EMITTERMANIP_H_62B23520_7C8E_11DE_8A39_0800200C9A66
-
-
-#include <string>
-
-namespace YAML
-{
-	enum EMITTER_MANIP {
-		// general manipulators
-		Auto,
-		
-		// string manipulators
-		// Auto, // duplicate
-		SingleQuoted,
-		DoubleQuoted,
-		Literal,
-		
-		// bool manipulators
-		YesNoBool,  // yes, no
-		TrueFalseBool,  // true, false
-		OnOffBool,  // on, off
-		UpperCase,  // TRUE, N
-		LowerCase,  // f, yes
-		CamelCase,  // No, Off
-		LongBool,  // yes, On
-		ShortBool,  // y, t
-		
-		// int manipulators
-		Dec,
-		Hex,
-		Oct,
-		
-		// sequence manipulators
-		BeginSeq,
-		EndSeq,
-		Flow,
-		Block,
-		
-		// map manipulators
-		BeginMap,
-		EndMap,
-		Key,
-		Value,
-		// Flow, // duplicate
-		// Block, // duplicate
-		// Auto, // duplicate
-		LongKey
-	};
-	
-	struct _Indent {
-		_Indent(int value_): value(value_) {}
-		int value;
-	};
-	
-	inline _Indent Indent(int value) {
-		return _Indent(value);
-	}
-	
-	struct _Alias {
-		_Alias(const std::string& content_): content(content_) {}
-		std::string content;
-	};
-	
-	inline _Alias Alias(const std::string content) {
-		return _Alias(content);
-	}
-	
-	struct _Anchor {
-		_Anchor(const std::string& content_): content(content_) {}
-		std::string content;
-	};
-
-	inline _Anchor Anchor(const std::string content) {
-		return _Anchor(content);
-	}
-
-	struct _Comment {
-		_Comment(const std::string& content_): content(content_) {}
-		std::string content;
-	};
-	
-	inline _Comment Comment(const std::string content) {
-		return _Comment(content);
-	}
-}
-
-#endif // EMITTERMANIP_H_62B23520_7C8E_11DE_8A39_0800200C9A66

include/exceptions.h

@@ -1,137 +0,0 @@
-#pragma once
-
-#ifndef EXCEPTIONS_H_62B23520_7C8E_11DE_8A39_0800200C9A66
-#define EXCEPTIONS_H_62B23520_7C8E_11DE_8A39_0800200C9A66
-
-
-#include "mark.h"
-#include <exception>
-#include <string>
-#include <sstream>
-
-namespace YAML
-{
-	// error messages
-	namespace ErrorMsg
-	{
-		const std::string YAML_DIRECTIVE_ARGS    = "YAML directives must have exactly one argument";
-		const std::string YAML_VERSION           = "bad YAML version: ";
-		const std::string YAML_MAJOR_VERSION     = "YAML major version too large";
-		const std::string TAG_DIRECTIVE_ARGS     = "TAG directives must have exactly two arguments";
-		const std::string END_OF_MAP             = "end of map not found";
-		const std::string END_OF_MAP_FLOW        = "end of map flow not found";
-		const std::string END_OF_SEQ             = "end of sequence not found";
-		const std::string END_OF_SEQ_FLOW        = "end of sequence flow not found";
-		const std::string MULTIPLE_TAGS          = "cannot assign multiple tags to the same node";
-		const std::string MULTIPLE_ANCHORS       = "cannot assign multiple anchors to the same node";
-		const std::string MULTIPLE_ALIASES       = "cannot assign multiple aliases to the same node";
-		const std::string ALIAS_CONTENT          = "aliases can't have any content, *including* tags";
-		const std::string INVALID_HEX            = "bad character found while scanning hex number";
-		const std::string INVALID_UNICODE        = "invalid unicode: ";
-		const std::string INVALID_ESCAPE         = "unknown escape character: ";
-		const std::string UNKNOWN_TOKEN          = "unknown token";
-		const std::string DOC_IN_SCALAR          = "illegal document indicator in scalar";
-		const std::string EOF_IN_SCALAR          = "illegal EOF in scalar";
-		const std::string CHAR_IN_SCALAR         = "illegal character in scalar";
-		const std::string TAB_IN_INDENTATION     = "illegal tab when looking for indentation";
-		const std::string FLOW_END               = "illegal flow end";
-		const std::string BLOCK_ENTRY            = "illegal block entry";
-		const std::string MAP_KEY                = "illegal map key";
-		const std::string MAP_VALUE              = "illegal map value";
-		const std::string ALIAS_NOT_FOUND        = "alias not found after *";
-		const std::string ANCHOR_NOT_FOUND       = "anchor not found after &";
-		const std::string CHAR_IN_ALIAS          = "illegal character found while scanning alias";
-		const std::string CHAR_IN_ANCHOR         = "illegal character found while scanning anchor";
-		const std::string ZERO_INDENT_IN_BLOCK   = "cannot set zero indentation for a block scalar";
-		const std::string CHAR_IN_BLOCK          = "unexpected character in block scalar";
-		const std::string AMBIGUOUS_ANCHOR     = "cannot assign the same alias to multiple nodes";
-		const std::string UNKNOWN_ANCHOR       = "the referenced anchor is not defined";
-
-		const std::string INVALID_SCALAR         = "invalid scalar";
-		const std::string KEY_NOT_FOUND          = "key not found";
-		const std::string BAD_DEREFERENCE        = "bad dereference";
-		
-		const std::string UNMATCHED_GROUP_TAG    = "unmatched group tag";
-		const std::string UNEXPECTED_END_SEQ     = "unexpected end sequence token";
-		const std::string UNEXPECTED_END_MAP     = "unexpected end map token";
-		const std::string SINGLE_QUOTED_CHAR     = "invalid character in single-quoted string";
-		const std::string INVALID_ANCHOR         = "invalid anchor";
-		const std::string INVALID_ALIAS          = "invalid alias";
-		const std::string EXPECTED_KEY_TOKEN     = "expected key token";
-		const std::string EXPECTED_VALUE_TOKEN   = "expected value token";
-		const std::string UNEXPECTED_KEY_TOKEN   = "unexpected key token";
-		const std::string UNEXPECTED_VALUE_TOKEN = "unexpected value token";
-	}
-
-	class Exception: public std::exception {
-	public:
-		Exception(const Mark& mark_, const std::string& msg_)
-			: mark(mark_), msg(msg_) {
-				std::stringstream output;
-				output << "yaml-cpp: error at line " << mark.line+1 << ", column " << mark.column+1 << ": " << msg;
-				what_ = output.str();
-			}
-		virtual ~Exception() throw() {}
-		virtual const char *what() const throw() { return what_.c_str(); }
-
-		Mark mark;
-		std::string msg;
-		
-	private:
-		std::string what_;
-	};
-
-	class ParserException: public Exception {
-	public:
-		ParserException(const Mark& mark_, const std::string& msg_)
-			: Exception(mark_, msg_) {}
-	};
-
-	class RepresentationException: public Exception {
-	public:
-		RepresentationException(const Mark& mark_, const std::string& msg_)
-			: Exception(mark_, msg_) {}
-	};
-
-	// representation exceptions
-	class InvalidScalar: public RepresentationException {
-	public:
-		InvalidScalar(const Mark& mark_)
-			: RepresentationException(mark_, ErrorMsg::INVALID_SCALAR) {}
-	};
-
-	class KeyNotFound: public RepresentationException {
-	public:
-		KeyNotFound(const Mark& mark_)
-			: RepresentationException(mark_, ErrorMsg::KEY_NOT_FOUND) {}
-	};
-
-	template <typename T>
-	class TypedKeyNotFound: public KeyNotFound {
-	public:
-		TypedKeyNotFound(const Mark& mark_, const T& key_)
-			: KeyNotFound(mark_), key(key_) {}
-		~TypedKeyNotFound() throw() {}
-
-		T key;
-	};
-
-	template <typename T>
-	TypedKeyNotFound <T> MakeTypedKeyNotFound(const Mark& mark, const T& key) {
-		return TypedKeyNotFound <T> (mark, key);
-	}
-
-	class BadDereference: public RepresentationException {
-	public:
-		BadDereference()
-		: RepresentationException(Mark::null(), ErrorMsg::BAD_DEREFERENCE) {}
-	};
-	
-	class EmitterException: public Exception {
-	public:
-		EmitterException(const std::string& msg_)
-		: Exception(Mark::null(), msg_) {}
-	};
-}
-
-#endif // EXCEPTIONS_H_62B23520_7C8E_11DE_8A39_0800200C9A66

include/iterator.h

@@ -1,36 +0,0 @@
-#pragma once
-
-#ifndef ITERATOR_H_62B23520_7C8E_11DE_8A39_0800200C9A66
-#define ITERATOR_H_62B23520_7C8E_11DE_8A39_0800200C9A66
-
-
-namespace YAML
-{
-	class Node;
-	struct IterPriv;
-
-	class Iterator
-	{
-	public:
-		Iterator();
-		Iterator(IterPriv *pData);
-		Iterator(const Iterator& rhs);
-		~Iterator();
-
-		Iterator& operator = (const Iterator& rhs);
-		Iterator& operator ++ ();
-		Iterator operator ++ (int);
-		const Node& operator * () const;
-		const Node *operator -> () const;
-		const Node& first() const;
-		const Node& second() const;
-
-		friend bool operator == (const Iterator& it, const Iterator& jt);
-		friend bool operator != (const Iterator& it, const Iterator& jt);
-
-	private:
-		IterPriv *m_pData;
-	};
-}
-
-#endif // ITERATOR_H_62B23520_7C8E_11DE_8A39_0800200C9A66

include/mark.h

@@ -1,22 +0,0 @@
-#pragma once
-
-#ifndef MARK_H_62B23520_7C8E_11DE_8A39_0800200C9A66
-#define MARK_H_62B23520_7C8E_11DE_8A39_0800200C9A66
-
-
-namespace YAML
-{
-	struct Mark {
-		Mark(): pos(0), line(0), column(0) {}
-		
-		static const Mark null() { return Mark(-1, -1, -1); }
-		
-		int pos;
-		int line, column;
-		
-	private:
-		Mark(int pos_, int line_, int column_): pos(pos_), line(line_), column(column_) {}
-	};
-}
-
-#endif // MARK_H_62B23520_7C8E_11DE_8A39_0800200C9A66

include/node.h

@@ -1,138 +0,0 @@
-#pragma once
-
-#ifndef NODE_H_62B23520_7C8E_11DE_8A39_0800200C9A66
-#define NODE_H_62B23520_7C8E_11DE_8A39_0800200C9A66
-
-
-#include "conversion.h"
-#include "exceptions.h"
-#include "iterator.h"
-#include "mark.h"
-#include "noncopyable.h"
-#include "parserstate.h"
-#include <iostream>
-#include <string>
-#include <vector>
-#include <map>
-#include <memory>
-
-namespace YAML
-{
-	class Content;
-	class Scanner;
-	class Emitter;
-
-	enum CONTENT_TYPE { CT_NONE, CT_SCALAR, CT_SEQUENCE, CT_MAP };
-
-	class Node: private noncopyable
-	{
-	public:
-		Node();
-		~Node();
-
-		void Clear();
-		std::auto_ptr<Node> Clone() const;
-		void Parse(Scanner *pScanner, const ParserState& state);
-
-		CONTENT_TYPE GetType() const;
-
-		// file location of start of this node
-		const Mark GetMark() const { return m_mark; }
-
-		// accessors
-		Iterator begin() const;
-		Iterator end() const;
-		std::size_t size() const;
-
-		// extraction of scalars
-		bool GetScalar(std::string& s) const;
-
-		// we can specialize this for other values
-		template <typename T>
-		bool Read(T& value) const;
-
-		template <typename T>
-		const T Read() const;
-		
-		template <typename T>
-		operator T() const;
-
-		template <typename T>
-		friend void operator >> (const Node& node, T& value);
-
-		// retrieval for maps and sequences
-		template <typename T>
-		const Node *FindValue(const T& key) const;
-
-		template <typename T>
-		const Node& operator [] (const T& key) const;
-		
-		// specific to maps
-		const Node *FindValue(const char *key) const;
-		const Node& operator [] (const char *key) const;
-
-		// for anchors/aliases
-		const Node *Identity() const { return m_pIdentity; }
-		bool IsAlias() const { return m_alias; }
-		bool IsReferenced() const { return m_referenced; }
-
-		// emitting
-		friend Emitter& operator << (Emitter& out, const Node& node);
-
-		// ordering
-		int Compare(const Node& rhs) const;
-		friend bool operator < (const Node& n1, const Node& n2);
-
-	private:
-		// helper for sequences
-		template <typename, bool> friend struct _FindFromNodeAtIndex;
-		const Node *FindAtIndex(std::size_t i) const;
-		
-		// helper for maps
-		template <typename T>
-		const Node& GetValue(const T& key) const;
-
-		template <typename T>
-		const Node *FindValueForKey(const T& key) const;
-		
-		// helper for cloning
-		Node(const Mark& mark, const std::string& anchor, const std::string& tag, const Content *pContent);
-
-		// helpers for parsing
-		void ParseHeader(Scanner *pScanner, const ParserState& state);
-		void ParseTag(Scanner *pScanner, const ParserState& state);
-		void ParseAnchor(Scanner *pScanner, const ParserState& state);
-		void ParseAlias(Scanner *pScanner, const ParserState& state);
-
-	private:
-		Mark m_mark;
-		std::string m_anchor, m_tag;
-		Content *m_pContent;
-		bool m_alias;
-		const Node *m_pIdentity;
-		mutable bool m_referenced;
-	};
-	
-	// comparisons with auto-conversion
-	template <typename T>
-	bool operator == (const T& value, const Node& node);
-	
-	template <typename T>
-	bool operator == (const Node& node, const T& value);
-	
-	template <typename T>
-	bool operator != (const T& value, const Node& node);
-	
-	template <typename T>
-	bool operator != (const Node& node, const T& value);
-	
-	bool operator == (const char *value, const Node& node);
-	bool operator == (const Node& node, const char *value);
-	bool operator != (const char *value, const Node& node);
-	bool operator != (const Node& node, const char *value);
-}
-
-#include "nodeimpl.h"
-#include "nodereadimpl.h"
-
-#endif // NODE_H_62B23520_7C8E_11DE_8A39_0800200C9A66

include/nodeimpl.h

@@ -1,118 +0,0 @@
-#pragma once
-
-#ifndef NODEIMPL_H_62B23520_7C8E_11DE_8A39_0800200C9A66
-#define NODEIMPL_H_62B23520_7C8E_11DE_8A39_0800200C9A66
-
-
-#include "nodeutil.h"
-
-namespace YAML
-{
-	// implementation of templated things
-	template <typename T>
-	inline const T Node::Read() const {
-		T value;
-		*this >> value;
-		return value;
-	}
-	
-	template <typename T>
-	Node::operator T() const {
-		return Read<T>();
-	}
-
-	template <typename T>
-	inline void operator >> (const Node& node, T& value) {
-		if(!ConvertScalar(node, value))
-			throw InvalidScalar(node.m_mark);
-	}
-	
-	template <typename T>
-	inline const Node *Node::FindValue(const T& key) const {
-		switch(GetType()) {
-			case CT_MAP:
-				return FindValueForKey(key);
-			case CT_SEQUENCE:
-				return FindFromNodeAtIndex(*this, key);
-			default:
-				return 0;
-		}
-	}
-	
-	template <typename T>
-	inline const Node *Node::FindValueForKey(const T& key) const {
-		for(Iterator it=begin();it!=end();++it) {
-			T t;
-			if(it.first().Read(t)) {
-				if(key == t)
-					return &it.second();
-			}
-		}
-		
-		return 0;
-	}
-	
-	template <typename T>
-	inline const Node& Node::GetValue(const T& key) const {
-		if(!m_pContent)
-			throw BadDereference();
-		
-		const Node *pValue = FindValue(key);
-		if(!pValue)
-			throw MakeTypedKeyNotFound(m_mark, key);
-
-		return *pValue;
-	}
-	
-	template <typename T>
-	inline const Node& Node::operator [] (const T& key) const {
-		return GetValue(key);
-	}
-	
-	inline const Node *Node::FindValue(const char *key) const {
-		return FindValue(std::string(key));
-	}
-	
-	inline const Node& Node::operator [] (const char *key) const {
-		return GetValue(std::string(key));
-	}
-
-	template <typename T>
-	inline bool operator == (const T& value, const Node& node) {
-		return value == node.Read<T>();
-	}
-	
-	template <typename T>
-	inline bool operator == (const Node& node, const T& value) {
-		return value == node.Read<T>();
-	}
-	
-	template <typename T>
-	inline bool operator != (const T& value, const Node& node) {
-		return value != node.Read<T>();
-	}
-	
-	template <typename T>
-	inline bool operator != (const Node& node, const T& value) {
-		return value != node.Read<T>();
-	}
-
-	inline bool operator == (const char *value, const Node& node) {
-		return std::string(value) == node;
-	}
-	
-	inline bool operator == (const Node& node, const char *value) {
-		return std::string(value) == node;
-	}
-	
-	inline bool operator != (const char *value, const Node& node) {
-		return std::string(value) != node;
-	}
-	
-	inline bool operator != (const Node& node, const char *value) {
-		return std::string(value) != node;
-	}
-	
-}
-
-#endif // NODEIMPL_H_62B23520_7C8E_11DE_8A39_0800200C9A66

include/nodereadimpl.h

@@ -1,65 +0,0 @@
-#pragma once
-
-namespace YAML
-{
-	// implementation for Node::Read
-	// (the goal is to call ConvertScalar if we can, and fall back to operator >> if not)
-	// thanks to litb from stackoverflow.com
-	// http://stackoverflow.com/questions/1386183/how-to-call-a-templated-function-if-it-exists-and-something-else-otherwise/1386390#1386390
-	
-	template<bool>
-	struct read_impl;
-	
-	// ConvertScalar available
-	template<>
-	struct read_impl<true> {
-		template<typename T>
-		static bool read(const Node& node, T& value) {
-			return ConvertScalar(node, value);
-		}
-	};
-
-	// ConvertScalar not available
-	template<>
-	struct read_impl<false> {
-		template<typename T>
-		static bool read(const Node& node, T& value) {
-			try {
-				node >> value;
-			} catch(const Exception&) {
-				return false;
-			}
-			return true;
-		}
-	};
-	
-	namespace fallback {
-		// sizeof > 1
-		struct flag { char c[2]; };
-		flag Convert(...);
-		
-		char (& operator,(flag, flag) )[1];
-		
-		template<typename T>
-		void operator,(flag, T const&);
-		
-		char (& operator,(char(&)[1], flag) )[1];
-	}
-
-	template <typename T>
-	inline bool Node::Read(T& value) const {
-		using namespace fallback;
-
-		return read_impl<sizeof (fallback::flag(), Convert(std::string(), value), fallback::flag()) != 1>::read(*this, value);
-	}
-	
-	// the main conversion function
-	template <typename T>
-	inline bool ConvertScalar(const Node& node, T& value) {
-		std::string scalar;
-		if(!node.GetScalar(scalar))
-			return false;
-		
-		return Convert(scalar, value);
-	}
-}

include/nodeutil.h

@@ -1,60 +0,0 @@
-#pragma once
-
-#ifndef NODEUTIL_H_62B23520_7C8E_11DE_8A39_0800200C9A66
-#define NODEUTIL_H_62B23520_7C8E_11DE_8A39_0800200C9A66
-
-
-namespace YAML
-{
-	template <typename T, typename U>
-	struct is_same_type {
-		enum { value = false };
-	};
-	
-	template <typename T>
-	struct is_same_type<T, T> {
-		enum { value = true };
-	};
-	
-	template <typename T, bool check>
-	struct is_index_type_with_check {
-		enum { value = false };
-	};
-	
-	template <> struct is_index_type_with_check<std::size_t, false> { enum { value = true }; };
-
-#define MAKE_INDEX_TYPE(Type) \
-	template <> struct is_index_type_with_check<Type, is_same_type<Type, std::size_t>::value> { enum { value = true }; }
-	
-	MAKE_INDEX_TYPE(int);
-	MAKE_INDEX_TYPE(unsigned);
-	MAKE_INDEX_TYPE(short);
-	MAKE_INDEX_TYPE(unsigned short);
-	MAKE_INDEX_TYPE(long);
-	MAKE_INDEX_TYPE(unsigned long);
-
-#undef MAKE_INDEX_TYPE
-	
-	template <typename T>
-	struct is_index_type: public is_index_type_with_check<T, false> {};
-	
-	// messing around with template stuff to get the right overload for operator [] for a sequence
-	template <typename T, bool b>
-	struct _FindFromNodeAtIndex {
-		const Node *pRet;
-		_FindFromNodeAtIndex(const Node&, const T&): pRet(0) {}
-	};
-
-	template <typename T>
-	struct _FindFromNodeAtIndex<T, true> {
-		const Node *pRet;
-		_FindFromNodeAtIndex(const Node& node, const T& key): pRet(node.FindAtIndex(static_cast<std::size_t>(key))) {}
-	};
-
-	template <typename T>
-	inline const Node *FindFromNodeAtIndex(const Node& node, const T& key) {
-		return _FindFromNodeAtIndex<T, is_index_type<T>::value>(node, key).pRet;
-	}
-}
-
-#endif // NODEUTIL_H_62B23520_7C8E_11DE_8A39_0800200C9A66

include/noncopyable.h

@@ -1,22 +0,0 @@
-#pragma once
-
-#ifndef NONCOPYABLE_H_62B23520_7C8E_11DE_8A39_0800200C9A66
-#define NONCOPYABLE_H_62B23520_7C8E_11DE_8A39_0800200C9A66
-
-
-namespace YAML
-{
-	// this is basically boost::noncopyable
-	class noncopyable
-		{
-		protected:
-			noncopyable() {}
-			~noncopyable() {}
-			
-		private:
-			noncopyable(const noncopyable&);
-			const noncopyable& operator = (const noncopyable&);
-		};
-}
-
-#endif // NONCOPYABLE_H_62B23520_7C8E_11DE_8A39_0800200C9A66

include/null.h

@@ -1,21 +0,0 @@
-#pragma once
-
-#ifndef NULL_H_62B23520_7C8E_11DE_8A39_0800200C9A66
-#define NULL_H_62B23520_7C8E_11DE_8A39_0800200C9A66
-
-
-namespace YAML
-{
-	class Node;
-	
-	struct _Null {};
-	inline bool operator == (const _Null&, const _Null&) { return true; }
-	inline bool operator != (const _Null&, const _Null&) { return false; }
-	
-	bool IsNull(const Node& node);
-	
-	extern _Null Null;
-}
-
-#endif // NULL_H_62B23520_7C8E_11DE_8A39_0800200C9A66
-

include/ostream.h

@@ -1,38 +0,0 @@
-#pragma once
-
-#ifndef OSTREAM_H_62B23520_7C8E_11DE_8A39_0800200C9A66
-#define OSTREAM_H_62B23520_7C8E_11DE_8A39_0800200C9A66
-
-
-#include <string>
-
-namespace YAML
-{
-	class ostream
-	{
-	public:
-		ostream();
-		~ostream();
-		
-		void reserve(unsigned size);
-		void put(char ch);
-		const char *str() const { return m_buffer; }
-		
-		unsigned row() const { return m_row; }
-		unsigned col() const { return m_col; }
-		unsigned pos() const { return m_pos; }
-		
-	private:
-		char *m_buffer;
-		unsigned m_pos;
-		unsigned m_size;
-		
-		unsigned m_row, m_col;
-	};
-	
-	ostream& operator << (ostream& out, const char *str);
-	ostream& operator << (ostream& out, const std::string& str);
-	ostream& operator << (ostream& out, char ch);
-}
-
-#endif // OSTREAM_H_62B23520_7C8E_11DE_8A39_0800200C9A66

include/parser.h

@@ -1,48 +0,0 @@
-#pragma once
-
-#ifndef PARSER_H_62B23520_7C8E_11DE_8A39_0800200C9A66
-#define PARSER_H_62B23520_7C8E_11DE_8A39_0800200C9A66
-
-
-#include <ios>
-#include <string>
-#include <vector>
-#include <map>
-#include "node.h"
-#include "parserstate.h"
-
-namespace YAML
-{
-	class Scanner;
-	struct Token;
-
-	class Parser
-	{
-	public:
-		Parser(std::istream& in);
-		~Parser();
-
-		operator bool() const;
-
-		void Load(std::istream& in);
-		void GetNextDocument(Node& document);
-		void PrintTokens(std::ostream& out);
-
-	private:
-		void ParseDirectives();
-		void HandleDirective(Token *pToken);
-		void HandleYamlDirective(Token *pToken);
-		void HandleTagDirective(Token *pToken);
-
-	private:
-		// can't copy this
-		Parser(const Parser&) {}
-		Parser& operator = (const Parser&) { return *this; }
-
-	private:
-		Scanner *m_pScanner;
-		ParserState m_state;
-	};
-}
-
-#endif // PARSER_H_62B23520_7C8E_11DE_8A39_0800200C9A66

include/parserstate.h

@@ -1,26 +0,0 @@
-#pragma once
-
-#ifndef PARSERSTATE_H_62B23520_7C8E_11DE_8A39_0800200C9A66
-#define PARSERSTATE_H_62B23520_7C8E_11DE_8A39_0800200C9A66
-
-
-#include <string>
-#include <map>
-
-namespace YAML
-{
-	struct Version {
-		int major, minor;
-	};
-
-	struct ParserState
-	{
-		Version version;
-		std::map <std::string, std::string> tags;
-
-		void Reset();
-		std::string TranslateTag(const std::string& handle) const;
-	};
-}
-
-#endif // PARSERSTATE_H_62B23520_7C8E_11DE_8A39_0800200C9A66

include/stlemitter.h

@@ -1,44 +0,0 @@
-#pragma once
-
-#ifndef STLEMITTER_H_62B23520_7C8E_11DE_8A39_0800200C9A66
-#define STLEMITTER_H_62B23520_7C8E_11DE_8A39_0800200C9A66
-
-
-#include <vector>
-#include <list>
-#include <map>
-
-namespace YAML
-{
-	template <typename T>
-	inline Emitter& operator << (Emitter& emitter, const std::vector <T>& v) {
-		typedef typename std::vector <T> vec;
-		emitter << BeginSeq;
-		for(typename vec::const_iterator it=v.begin();it!=v.end();++it)
-			emitter << *it;
-		emitter << EndSeq;
-		return emitter;
-	}	
-
-	template <typename T>
-	inline Emitter& operator << (Emitter& emitter, const std::list <T>& v) {
-		typedef typename std::list <T> list;
-		emitter << BeginSeq;
-		for(typename list::const_iterator it=v.begin();it!=v.end();++it)
-			emitter << *it;
-		emitter << EndSeq;
-		return emitter;
-	}
-	
-	template <typename K, typename V>
-	inline Emitter& operator << (Emitter& emitter, const std::map <K, V>& m) {
-		typedef typename std::map <K, V> map;
-		emitter << BeginMap;
-		for(typename map::const_iterator it=m.begin();it!=m.end();++it)
-			emitter << Key << it->first << Value << it->second;
-		emitter << EndMap;
-		return emitter;
-	}
-}
-
-#endif // STLEMITTER_H_62B23520_7C8E_11DE_8A39_0800200C9A66

include/yaml-cpp/anchor.h

@@ -0,0 +1,17 @@
+#ifndef ANCHOR_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+#define ANCHOR_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+
+#if defined(_MSC_VER) ||                                            \
+    (defined(__GNUC__) && (__GNUC__ == 3 && __GNUC_MINOR__ >= 4) || \
+     (__GNUC__ >= 4))  // GCC supports "pragma once" correctly since 3.4
+#pragma once
+#endif
+
+#include <cstddef>
+
+namespace YAML {
+using anchor_t = std::size_t;
+const anchor_t NullAnchor = 0;
+}
+
+#endif  // ANCHOR_H_62B23520_7C8E_11DE_8A39_0800200C9A66

include/yaml-cpp/binary.h

@@ -0,0 +1,71 @@
+#ifndef BASE64_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+#define BASE64_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+
+#if defined(_MSC_VER) ||                                            \
+    (defined(__GNUC__) && (__GNUC__ == 3 && __GNUC_MINOR__ >= 4) || \
+     (__GNUC__ >= 4))  // GCC supports "pragma once" correctly since 3.4
+#pragma once
+#endif
+
+#include <string>
+#include <vector>
+
+#include "yaml-cpp/dll.h"
+
+namespace YAML {
+YAML_CPP_API std::string EncodeBase64(const unsigned char *data,
+                                      std::size_t size);
+YAML_CPP_API std::vector<unsigned char> DecodeBase64(const std::string &input);
+
+class YAML_CPP_API Binary {
+ public:
+  Binary(const unsigned char *data_, std::size_t size_)
+      : m_data{}, m_unownedData(data_), m_unownedSize(size_) {}
+  Binary() : Binary(nullptr, 0) {}
+  Binary(const Binary &) = default;
+  Binary(Binary &&) = default;
+  Binary &operator=(const Binary &) = default;
+  Binary &operator=(Binary &&) = default;
+
+  bool owned() const { return !m_unownedData; }
+  std::size_t size() const { return owned() ? m_data.size() : m_unownedSize; }
+  const unsigned char *data() const {
+    return owned() ? &m_data[0] : m_unownedData;
+  }
+
+  void swap(std::vector<unsigned char> &rhs) {
+    if (m_unownedData) {
+      m_data.swap(rhs);
+      rhs.clear();
+      rhs.resize(m_unownedSize);
+      std::copy(m_unownedData, m_unownedData + m_unownedSize, rhs.begin());
+      m_unownedData = nullptr;
+      m_unownedSize = 0;
+    } else {
+      m_data.swap(rhs);
+    }
+  }
+
+  bool operator==(const Binary &rhs) const {
+    const std::size_t s = size();
+    if (s != rhs.size())
+      return false;
+    const unsigned char *d1 = data();
+    const unsigned char *d2 = rhs.data();
+    for (std::size_t i = 0; i < s; i++) {
+      if (*d1++ != *d2++)
+        return false;
+    }
+    return true;
+  }
+
+  bool operator!=(const Binary &rhs) const { return !(*this == rhs); }
+
+ private:
+  std::vector<unsigned char> m_data;
+  const unsigned char *m_unownedData;
+  std::size_t m_unownedSize;
+};
+}  // namespace YAML
+
+#endif  // BASE64_H_62B23520_7C8E_11DE_8A39_0800200C9A66

include/yaml-cpp/contrib/anchordict.h

@@ -0,0 +1,40 @@
+#ifndef ANCHORDICT_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+#define ANCHORDICT_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+
+#if defined(_MSC_VER) ||                                            \
+    (defined(__GNUC__) && (__GNUC__ == 3 && __GNUC_MINOR__ >= 4) || \
+     (__GNUC__ >= 4))  // GCC supports "pragma once" correctly since 3.4
+#pragma once
+#endif
+
+#include <vector>
+
+#include "../anchor.h"
+
+namespace YAML {
+/**
+ * An object that stores and retrieves values correlating to {@link anchor_t}
+ * values.
+ *
+ * <p>Efficient implementation that can make assumptions about how
+ * {@code anchor_t} values are assigned by the {@link Parser} class.
+ */
+template <class T>
+class AnchorDict {
+ public:
+  AnchorDict() : m_data{} {}
+  void Register(anchor_t anchor, T value) {
+    if (anchor > m_data.size()) {
+      m_data.resize(anchor);
+    }
+    m_data[anchor - 1] = value;
+  }
+
+  T Get(anchor_t anchor) const { return m_data[anchor - 1]; }
+
+ private:
+  std::vector<T> m_data;
+};
+}  // namespace YAML
+
+#endif  // ANCHORDICT_H_62B23520_7C8E_11DE_8A39_0800200C9A66

include/yaml-cpp/contrib/graphbuilder.h

@@ -0,0 +1,149 @@
+#ifndef GRAPHBUILDER_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+#define GRAPHBUILDER_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+
+#if defined(_MSC_VER) ||                                            \
+    (defined(__GNUC__) && (__GNUC__ == 3 && __GNUC_MINOR__ >= 4) || \
+     (__GNUC__ >= 4))  // GCC supports "pragma once" correctly since 3.4
+#pragma once
+#endif
+
+#include "yaml-cpp/mark.h"
+#include <string>
+
+namespace YAML {
+class Parser;
+
+// GraphBuilderInterface
+// . Abstraction of node creation
+// . pParentNode is always nullptr or the return value of one of the NewXXX()
+//   functions.
+class GraphBuilderInterface {
+ public:
+  virtual ~GraphBuilderInterface() = 0;
+
+  // Create and return a new node with a null value.
+  virtual void *NewNull(const Mark &mark, void *pParentNode) = 0;
+
+  // Create and return a new node with the given tag and value.
+  virtual void *NewScalar(const Mark &mark, const std::string &tag,
+                          void *pParentNode, const std::string &value) = 0;
+
+  // Create and return a new sequence node
+  virtual void *NewSequence(const Mark &mark, const std::string &tag,
+                            void *pParentNode) = 0;
+
+  // Add pNode to pSequence.  pNode was created with one of the NewXxx()
+  // functions and pSequence with NewSequence().
+  virtual void AppendToSequence(void *pSequence, void *pNode) = 0;
+
+  // Note that no moew entries will be added to pSequence
+  virtual void SequenceComplete(void *pSequence) { (void)pSequence; }
+
+  // Create and return a new map node
+  virtual void *NewMap(const Mark &mark, const std::string &tag,
+                       void *pParentNode) = 0;
+
+  // Add the pKeyNode => pValueNode mapping to pMap.  pKeyNode and pValueNode
+  // were created with one of the NewXxx() methods and pMap with NewMap().
+  virtual void AssignInMap(void *pMap, void *pKeyNode, void *pValueNode) = 0;
+
+  // Note that no more assignments will be made in pMap
+  virtual void MapComplete(void *pMap) { (void)pMap; }
+
+  // Return the node that should be used in place of an alias referencing
+  // pNode (pNode by default)
+  virtual void *AnchorReference(const Mark &mark, void *pNode) {
+    (void)mark;
+    return pNode;
+  }
+};
+
+// Typesafe wrapper for GraphBuilderInterface.  Assumes that Impl defines
+// Node, Sequence, and Map types.  Sequence and Map must derive from Node
+// (unless Node is defined as void).  Impl must also implement function with
+// all of the same names as the virtual functions in GraphBuilderInterface
+// -- including the ones with default implementations -- but with the
+// prototypes changed to accept an explicit Node*, Sequence*, or Map* where
+// appropriate.
+template <class Impl>
+class GraphBuilder : public GraphBuilderInterface {
+ public:
+  typedef typename Impl::Node Node;
+  typedef typename Impl::Sequence Sequence;
+  typedef typename Impl::Map Map;
+
+  GraphBuilder(Impl &impl) : m_impl(impl) {
+    Map *pMap = nullptr;
+    Sequence *pSeq = nullptr;
+    Node *pNode = nullptr;
+
+    // Type consistency checks
+    pNode = pMap;
+    pNode = pSeq;
+  }
+
+  GraphBuilderInterface &AsBuilderInterface() { return *this; }
+
+  virtual void *NewNull(const Mark &mark, void *pParentNode) {
+    return CheckType<Node>(m_impl.NewNull(mark, AsNode(pParentNode)));
+  }
+
+  virtual void *NewScalar(const Mark &mark, const std::string &tag,
+                          void *pParentNode, const std::string &value) {
+    return CheckType<Node>(
+        m_impl.NewScalar(mark, tag, AsNode(pParentNode), value));
+  }
+
+  virtual void *NewSequence(const Mark &mark, const std::string &tag,
+                            void *pParentNode) {
+    return CheckType<Sequence>(
+        m_impl.NewSequence(mark, tag, AsNode(pParentNode)));
+  }
+  virtual void AppendToSequence(void *pSequence, void *pNode) {
+    m_impl.AppendToSequence(AsSequence(pSequence), AsNode(pNode));
+  }
+  virtual void SequenceComplete(void *pSequence) {
+    m_impl.SequenceComplete(AsSequence(pSequence));
+  }
+
+  virtual void *NewMap(const Mark &mark, const std::string &tag,
+                       void *pParentNode) {
+    return CheckType<Map>(m_impl.NewMap(mark, tag, AsNode(pParentNode)));
+  }
+  virtual void AssignInMap(void *pMap, void *pKeyNode, void *pValueNode) {
+    m_impl.AssignInMap(AsMap(pMap), AsNode(pKeyNode), AsNode(pValueNode));
+  }
+  virtual void MapComplete(void *pMap) { m_impl.MapComplete(AsMap(pMap)); }
+
+  virtual void *AnchorReference(const Mark &mark, void *pNode) {
+    return CheckType<Node>(m_impl.AnchorReference(mark, AsNode(pNode)));
+  }
+
+ private:
+  Impl &m_impl;
+
+  // Static check for pointer to T
+  template <class T, class U>
+  static T *CheckType(U *p) {
+    return p;
+  }
+
+  static Node *AsNode(void *pNode) { return static_cast<Node *>(pNode); }
+  static Sequence *AsSequence(void *pSeq) {
+    return static_cast<Sequence *>(pSeq);
+  }
+  static Map *AsMap(void *pMap) { return static_cast<Map *>(pMap); }
+};
+
+void *BuildGraphOfNextDocument(Parser &parser,
+                               GraphBuilderInterface &graphBuilder);
+
+template <class Impl>
+typename Impl::Node *BuildGraphOfNextDocument(Parser &parser, Impl &impl) {
+  GraphBuilder<Impl> graphBuilder(impl);
+  return static_cast<typename Impl::Node *>(
+      BuildGraphOfNextDocument(parser, graphBuilder));
+}
+}
+
+#endif  // GRAPHBUILDER_H_62B23520_7C8E_11DE_8A39_0800200C9A66

include/yaml-cpp/depthguard.h

@@ -0,0 +1,77 @@
+#ifndef DEPTH_GUARD_H_00000000000000000000000000000000000000000000000000000000
+#define DEPTH_GUARD_H_00000000000000000000000000000000000000000000000000000000
+
+#if defined(_MSC_VER) ||                                            \
+    (defined(__GNUC__) && (__GNUC__ == 3 && __GNUC_MINOR__ >= 4) || \
+     (__GNUC__ >= 4))  // GCC supports "pragma once" correctly since 3.4
+#pragma once
+#endif
+
+#include "exceptions.h"
+
+namespace YAML {
+
+/**
+ * @brief The DeepRecursion class
+ *  An exception class which is thrown by DepthGuard. Ideally it should be
+ * a member of DepthGuard. However, DepthGuard is a templated class which means
+ * that any catch points would then need to know the template parameters. It is
+ * simpler for clients to not have to know at the catch point what was the
+ * maximum depth.
+ */
+class DeepRecursion : public ParserException {
+public:
+  virtual ~DeepRecursion() = default;
+
+  DeepRecursion(int depth, const Mark& mark_, const std::string& msg_);
+
+  // Returns the recursion depth when the exception was thrown
+  int depth() const {
+    return m_depth;
+  }
+
+private:
+  int m_depth = 0;
+};
+
+/**
+ * @brief The DepthGuard class
+ *  DepthGuard takes a reference to an integer. It increments the integer upon
+ * construction of DepthGuard and decrements the integer upon destruction.
+ *
+ * If the integer would be incremented past max_depth, then an exception is
+ * thrown. This is ideally geared toward guarding against deep recursion.
+ *
+ * @param max_depth
+ *  compile-time configurable maximum depth.
+ */
+template <int max_depth = 2000>
+class DepthGuard final {
+public:
+  DepthGuard(int & depth_, const Mark& mark_, const std::string& msg_) : m_depth(depth_) {
+    ++m_depth;
+    if ( max_depth <= m_depth ) {
+        throw DeepRecursion{m_depth, mark_, msg_};
+    }
+  }
+
+  DepthGuard(const DepthGuard & copy_ctor) = delete;
+  DepthGuard(DepthGuard && move_ctor) = delete;
+  DepthGuard & operator=(const DepthGuard & copy_assign) = delete;
+  DepthGuard & operator=(DepthGuard && move_assign) = delete;
+
+  ~DepthGuard() {
+    --m_depth;
+  }
+
+  int current_depth() const {
+    return m_depth;
+  }
+
+private:
+    int & m_depth;
+};
+
+} // namespace YAML
+
+#endif // DEPTH_GUARD_H_00000000000000000000000000000000000000000000000000000000

include/yaml-cpp/dll.h

@@ -0,0 +1,33 @@
+#ifndef DLL_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+#define DLL_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+
+#if defined(_MSC_VER) ||                                            \
+    (defined(__GNUC__) && (__GNUC__ == 3 && __GNUC_MINOR__ >= 4) || \
+     (__GNUC__ >= 4))  // GCC supports "pragma once" correctly since 3.4
+#pragma once
+#endif
+
+// The following ifdef block is the standard way of creating macros which make
+// exporting from a DLL simpler. All files within this DLL are compiled with the
+// yaml_cpp_EXPORTS symbol defined on the command line. This symbol should not
+// be defined on any project that uses this DLL. This way any other project
+// whose source files include this file see YAML_CPP_API functions as being
+// imported from a DLL, whereas this DLL sees symbols defined with this macro as
+// being exported.
+#undef YAML_CPP_API
+
+#ifdef YAML_CPP_DLL      // Using or Building YAML-CPP DLL (definition defined
+                         // manually)
+#ifdef yaml_cpp_EXPORTS  // Building YAML-CPP DLL (definition created by CMake
+                         // or defined manually)
+//	#pragma message( "Defining YAML_CPP_API for DLL export" )
+#define YAML_CPP_API __declspec(dllexport)
+#else  // yaml_cpp_EXPORTS
+//	#pragma message( "Defining YAML_CPP_API for DLL import" )
+#define YAML_CPP_API __declspec(dllimport)
+#endif  // yaml_cpp_EXPORTS
+#else   // YAML_CPP_DLL
+#define YAML_CPP_API
+#endif  // YAML_CPP_DLL
+
+#endif  // DLL_H_62B23520_7C8E_11DE_8A39_0800200C9A66

include/yaml-cpp/emitfromevents.h

@@ -0,0 +1,57 @@
+#ifndef EMITFROMEVENTS_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+#define EMITFROMEVENTS_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+
+#if defined(_MSC_VER) ||                                            \
+    (defined(__GNUC__) && (__GNUC__ == 3 && __GNUC_MINOR__ >= 4) || \
+     (__GNUC__ >= 4))  // GCC supports "pragma once" correctly since 3.4
+#pragma once
+#endif
+
+#include <stack>
+
+#include "yaml-cpp/anchor.h"
+#include "yaml-cpp/emitterstyle.h"
+#include "yaml-cpp/eventhandler.h"
+
+namespace YAML {
+struct Mark;
+}  // namespace YAML
+
+namespace YAML {
+class Emitter;
+
+class EmitFromEvents : public EventHandler {
+ public:
+  EmitFromEvents(Emitter& emitter);
+
+  void OnDocumentStart(const Mark& mark) override;
+  void OnDocumentEnd() override;
+
+  void OnNull(const Mark& mark, anchor_t anchor) override;
+  void OnAlias(const Mark& mark, anchor_t anchor) override;
+  void OnScalar(const Mark& mark, const std::string& tag,
+                        anchor_t anchor, const std::string& value) override;
+
+  void OnSequenceStart(const Mark& mark, const std::string& tag,
+                               anchor_t anchor, EmitterStyle::value style) override;
+  void OnSequenceEnd() override;
+
+  void OnMapStart(const Mark& mark, const std::string& tag,
+                          anchor_t anchor, EmitterStyle::value style) override;
+  void OnMapEnd() override;
+
+ private:
+  void BeginNode();
+  void EmitProps(const std::string& tag, anchor_t anchor);
+
+ private:
+  Emitter& m_emitter;
+
+  struct State {
+    enum value { WaitingForSequenceEntry, WaitingForKey, WaitingForValue };
+  };
+  std::stack<State::value> m_stateStack;
+};
+}
+
+#endif  // EMITFROMEVENTS_H_62B23520_7C8E_11DE_8A39_0800200C9A66

include/yaml-cpp/emitter.h

@@ -0,0 +1,281 @@
+#ifndef EMITTER_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+#define EMITTER_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+
+#if defined(_MSC_VER) ||                                            \
+    (defined(__GNUC__) && (__GNUC__ == 3 && __GNUC_MINOR__ >= 4) || \
+     (__GNUC__ >= 4))  // GCC supports "pragma once" correctly since 3.4
+#pragma once
+#endif
+
+#include <cmath>
+#include <cstddef>
+#include <limits>
+#include <memory>
+#include <sstream>
+#include <string>
+#include <type_traits>
+
+#include "yaml-cpp/binary.h"
+#include "yaml-cpp/dll.h"
+#include "yaml-cpp/emitterdef.h"
+#include "yaml-cpp/emittermanip.h"
+#include "yaml-cpp/null.h"
+#include "yaml-cpp/ostream_wrapper.h"
+
+namespace YAML {
+class Binary;
+struct _Null;
+}  // namespace YAML
+
+namespace YAML {
+class EmitterState;
+
+class YAML_CPP_API Emitter {
+ public:
+  Emitter();
+  explicit Emitter(std::ostream& stream);
+  Emitter(const Emitter&) = delete;
+  Emitter& operator=(const Emitter&) = delete;
+  ~Emitter();
+
+  // output
+  const char* c_str() const;
+  std::size_t size() const;
+
+  // state checking
+  bool good() const;
+  const std::string GetLastError() const;
+
+  // global setters
+  bool SetOutputCharset(EMITTER_MANIP value);
+  bool SetStringFormat(EMITTER_MANIP value);
+  bool SetBoolFormat(EMITTER_MANIP value);
+  bool SetNullFormat(EMITTER_MANIP value);
+  bool SetIntBase(EMITTER_MANIP value);
+  bool SetSeqFormat(EMITTER_MANIP value);
+  bool SetMapFormat(EMITTER_MANIP value);
+  bool SetIndent(std::size_t n);
+  bool SetPreCommentIndent(std::size_t n);
+  bool SetPostCommentIndent(std::size_t n);
+  bool SetFloatPrecision(std::size_t n);
+  bool SetDoublePrecision(std::size_t n);
+  void RestoreGlobalModifiedSettings();
+
+  // local setters
+  Emitter& SetLocalValue(EMITTER_MANIP value);
+  Emitter& SetLocalIndent(const _Indent& indent);
+  Emitter& SetLocalPrecision(const _Precision& precision);
+
+  // overloads of write
+  Emitter& Write(const std::string& str);
+  Emitter& Write(bool b);
+  Emitter& Write(char ch);
+  Emitter& Write(const _Alias& alias);
+  Emitter& Write(const _Anchor& anchor);
+  Emitter& Write(const _Tag& tag);
+  Emitter& Write(const _Comment& comment);
+  Emitter& Write(const _Null& n);
+  Emitter& Write(const Binary& binary);
+
+  template <typename T>
+  Emitter& WriteIntegralType(T value);
+
+  template <typename T>
+  Emitter& WriteStreamable(T value);
+
+ private:
+  template <typename T>
+  void SetStreamablePrecision(std::stringstream&) {}
+  std::size_t GetFloatPrecision() const;
+  std::size_t GetDoublePrecision() const;
+
+  void PrepareIntegralStream(std::stringstream& stream) const;
+  void StartedScalar();
+
+ private:
+  void EmitBeginDoc();
+  void EmitEndDoc();
+  void EmitBeginSeq();
+  void EmitEndSeq();
+  void EmitBeginMap();
+  void EmitEndMap();
+  void EmitNewline();
+  void EmitKindTag();
+  void EmitTag(bool verbatim, const _Tag& tag);
+
+  void PrepareNode(EmitterNodeType::value child);
+  void PrepareTopNode(EmitterNodeType::value child);
+  void FlowSeqPrepareNode(EmitterNodeType::value child);
+  void BlockSeqPrepareNode(EmitterNodeType::value child);
+
+  void FlowMapPrepareNode(EmitterNodeType::value child);
+
+  void FlowMapPrepareLongKey(EmitterNodeType::value child);
+  void FlowMapPrepareLongKeyValue(EmitterNodeType::value child);
+  void FlowMapPrepareSimpleKey(EmitterNodeType::value child);
+  void FlowMapPrepareSimpleKeyValue(EmitterNodeType::value child);
+
+  void BlockMapPrepareNode(EmitterNodeType::value child);
+
+  void BlockMapPrepareLongKey(EmitterNodeType::value child);
+  void BlockMapPrepareLongKeyValue(EmitterNodeType::value child);
+  void BlockMapPrepareSimpleKey(EmitterNodeType::value child);
+  void BlockMapPrepareSimpleKeyValue(EmitterNodeType::value child);
+
+  void SpaceOrIndentTo(bool requireSpace, std::size_t indent);
+
+  const char* ComputeFullBoolName(bool b) const;
+  const char* ComputeNullName() const;
+  bool CanEmitNewline() const;
+
+ private:
+  std::unique_ptr<EmitterState> m_pState;
+  ostream_wrapper m_stream;
+};
+
+template <typename T>
+inline Emitter& Emitter::WriteIntegralType(T value) {
+  if (!good())
+    return *this;
+
+  PrepareNode(EmitterNodeType::Scalar);
+
+  std::stringstream stream;
+  PrepareIntegralStream(stream);
+  stream << value;
+  m_stream << stream.str();
+
+  StartedScalar();
+
+  return *this;
+}
+
+template <typename T>
+inline Emitter& Emitter::WriteStreamable(T value) {
+  if (!good())
+    return *this;
+
+  PrepareNode(EmitterNodeType::Scalar);
+
+  std::stringstream stream;
+  SetStreamablePrecision<T>(stream);
+
+  bool special = false;
+  if (std::is_floating_point<T>::value) {
+    if ((std::numeric_limits<T>::has_quiet_NaN ||
+         std::numeric_limits<T>::has_signaling_NaN) &&
+        std::isnan(value)) {
+      special = true;
+      stream << ".nan";
+    } else if (std::numeric_limits<T>::has_infinity && std::isinf(value)) {
+      special = true;
+      if (std::signbit(value)) {
+        stream << "-.inf";
+      } else {
+        stream << ".inf";
+      }
+    }
+  }
+
+  if (!special) {
+    stream << value;
+  }
+  m_stream << stream.str();
+
+  StartedScalar();
+
+  return *this;
+}
+
+template <>
+inline void Emitter::SetStreamablePrecision<float>(std::stringstream& stream) {
+  stream.precision(static_cast<std::streamsize>(GetFloatPrecision()));
+}
+
+template <>
+inline void Emitter::SetStreamablePrecision<double>(std::stringstream& stream) {
+  stream.precision(static_cast<std::streamsize>(GetDoublePrecision()));
+}
+
+// overloads of insertion
+inline Emitter& operator<<(Emitter& emitter, const std::string& v) {
+  return emitter.Write(v);
+}
+inline Emitter& operator<<(Emitter& emitter, bool v) {
+  return emitter.Write(v);
+}
+inline Emitter& operator<<(Emitter& emitter, char v) {
+  return emitter.Write(v);
+}
+inline Emitter& operator<<(Emitter& emitter, unsigned char v) {
+  return emitter.Write(static_cast<char>(v));
+}
+inline Emitter& operator<<(Emitter& emitter, const _Alias& v) {
+  return emitter.Write(v);
+}
+inline Emitter& operator<<(Emitter& emitter, const _Anchor& v) {
+  return emitter.Write(v);
+}
+inline Emitter& operator<<(Emitter& emitter, const _Tag& v) {
+  return emitter.Write(v);
+}
+inline Emitter& operator<<(Emitter& emitter, const _Comment& v) {
+  return emitter.Write(v);
+}
+inline Emitter& operator<<(Emitter& emitter, const _Null& v) {
+  return emitter.Write(v);
+}
+inline Emitter& operator<<(Emitter& emitter, const Binary& b) {
+  return emitter.Write(b);
+}
+
+inline Emitter& operator<<(Emitter& emitter, const char* v) {
+  return emitter.Write(std::string(v));
+}
+
+inline Emitter& operator<<(Emitter& emitter, int v) {
+  return emitter.WriteIntegralType(v);
+}
+inline Emitter& operator<<(Emitter& emitter, unsigned int v) {
+  return emitter.WriteIntegralType(v);
+}
+inline Emitter& operator<<(Emitter& emitter, short v) {
+  return emitter.WriteIntegralType(v);
+}
+inline Emitter& operator<<(Emitter& emitter, unsigned short v) {
+  return emitter.WriteIntegralType(v);
+}
+inline Emitter& operator<<(Emitter& emitter, long v) {
+  return emitter.WriteIntegralType(v);
+}
+inline Emitter& operator<<(Emitter& emitter, unsigned long v) {
+  return emitter.WriteIntegralType(v);
+}
+inline Emitter& operator<<(Emitter& emitter, long long v) {
+  return emitter.WriteIntegralType(v);
+}
+inline Emitter& operator<<(Emitter& emitter, unsigned long long v) {
+  return emitter.WriteIntegralType(v);
+}
+
+inline Emitter& operator<<(Emitter& emitter, float v) {
+  return emitter.WriteStreamable(v);
+}
+inline Emitter& operator<<(Emitter& emitter, double v) {
+  return emitter.WriteStreamable(v);
+}
+
+inline Emitter& operator<<(Emitter& emitter, EMITTER_MANIP value) {
+  return emitter.SetLocalValue(value);
+}
+
+inline Emitter& operator<<(Emitter& emitter, _Indent indent) {
+  return emitter.SetLocalIndent(indent);
+}
+
+inline Emitter& operator<<(Emitter& emitter, _Precision precision) {
+  return emitter.SetLocalPrecision(precision);
+}
+}  // namespace YAML
+
+#endif  // EMITTER_H_62B23520_7C8E_11DE_8A39_0800200C9A66

include/yaml-cpp/emitterdef.h

@@ -0,0 +1,16 @@
+#ifndef EMITTERDEF_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+#define EMITTERDEF_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+
+#if defined(_MSC_VER) ||                                            \
+    (defined(__GNUC__) && (__GNUC__ == 3 && __GNUC_MINOR__ >= 4) || \
+     (__GNUC__ >= 4))  // GCC supports "pragma once" correctly since 3.4
+#pragma once
+#endif
+
+namespace YAML {
+struct EmitterNodeType {
+  enum value { NoType, Property, Scalar, FlowSeq, BlockSeq, FlowMap, BlockMap };
+};
+}
+
+#endif  // EMITTERDEF_H_62B23520_7C8E_11DE_8A39_0800200C9A66

include/yaml-cpp/emittermanip.h

@@ -0,0 +1,144 @@
+#ifndef EMITTERMANIP_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+#define EMITTERMANIP_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+
+#if defined(_MSC_VER) ||                                            \
+    (defined(__GNUC__) && (__GNUC__ == 3 && __GNUC_MINOR__ >= 4) || \
+     (__GNUC__ >= 4))  // GCC supports "pragma once" correctly since 3.4
+#pragma once
+#endif
+
+#include <string>
+
+namespace YAML {
+enum EMITTER_MANIP {
+  // general manipulators
+  Auto,
+  TagByKind,
+  Newline,
+
+  // output character set
+  EmitNonAscii,
+  EscapeNonAscii,
+  EscapeAsJson,
+
+  // string manipulators
+  // Auto, // duplicate
+  SingleQuoted,
+  DoubleQuoted,
+  Literal,
+
+  // null manipulators
+  LowerNull,
+  UpperNull,
+  CamelNull,
+  TildeNull,
+
+  // bool manipulators
+  YesNoBool,      // yes, no
+  TrueFalseBool,  // true, false
+  OnOffBool,      // on, off
+  UpperCase,      // TRUE, N
+  LowerCase,      // f, yes
+  CamelCase,      // No, Off
+  LongBool,       // yes, On
+  ShortBool,      // y, t
+
+  // int manipulators
+  Dec,
+  Hex,
+  Oct,
+
+  // document manipulators
+  BeginDoc,
+  EndDoc,
+
+  // sequence manipulators
+  BeginSeq,
+  EndSeq,
+  Flow,
+  Block,
+
+  // map manipulators
+  BeginMap,
+  EndMap,
+  Key,
+  Value,
+  // Flow, // duplicate
+  // Block, // duplicate
+  // Auto, // duplicate
+  LongKey
+};
+
+struct _Indent {
+  _Indent(int value_) : value(value_) {}
+  int value;
+};
+
+inline _Indent Indent(int value) { return _Indent(value); }
+
+struct _Alias {
+  _Alias(const std::string& content_) : content(content_) {}
+  std::string content;
+};
+
+inline _Alias Alias(const std::string& content) { return _Alias(content); }
+
+struct _Anchor {
+  _Anchor(const std::string& content_) : content(content_) {}
+  std::string content;
+};
+
+inline _Anchor Anchor(const std::string& content) { return _Anchor(content); }
+
+struct _Tag {
+  struct Type {
+    enum value { Verbatim, PrimaryHandle, NamedHandle };
+  };
+
+  explicit _Tag(const std::string& prefix_, const std::string& content_,
+                Type::value type_)
+      : prefix(prefix_), content(content_), type(type_) {}
+  std::string prefix;
+  std::string content;
+  Type::value type;
+};
+
+inline _Tag VerbatimTag(const std::string& content) {
+  return _Tag("", content, _Tag::Type::Verbatim);
+}
+
+inline _Tag LocalTag(const std::string& content) {
+  return _Tag("", content, _Tag::Type::PrimaryHandle);
+}
+
+inline _Tag LocalTag(const std::string& prefix, const std::string content) {
+  return _Tag(prefix, content, _Tag::Type::NamedHandle);
+}
+
+inline _Tag SecondaryTag(const std::string& content) {
+  return _Tag("", content, _Tag::Type::NamedHandle);
+}
+
+struct _Comment {
+  _Comment(const std::string& content_) : content(content_) {}
+  std::string content;
+};
+
+inline _Comment Comment(const std::string& content) { return _Comment(content); }
+
+struct _Precision {
+  _Precision(int floatPrecision_, int doublePrecision_)
+      : floatPrecision(floatPrecision_), doublePrecision(doublePrecision_) {}
+
+  int floatPrecision;
+  int doublePrecision;
+};
+
+inline _Precision FloatPrecision(int n) { return _Precision(n, -1); }
+
+inline _Precision DoublePrecision(int n) { return _Precision(-1, n); }
+
+inline _Precision Precision(int n) { return _Precision(n, n); }
+}
+
+#endif  // EMITTERMANIP_H_62B23520_7C8E_11DE_8A39_0800200C9A66

include/yaml-cpp/emitterstyle.h

@@ -0,0 +1,16 @@
+#ifndef EMITTERSTYLE_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+#define EMITTERSTYLE_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+
+#if defined(_MSC_VER) ||                                            \
+    (defined(__GNUC__) && (__GNUC__ == 3 && __GNUC_MINOR__ >= 4) || \
+     (__GNUC__ >= 4))  // GCC supports "pragma once" correctly since 3.4
+#pragma once
+#endif
+
+namespace YAML {
+struct EmitterStyle {
+  enum value { Default, Block, Flow };
+};
+}
+
+#endif  // EMITTERSTYLE_H_62B23520_7C8E_11DE_8A39_0800200C9A66

include/yaml-cpp/eventhandler.h

@@ -0,0 +1,45 @@
+#ifndef EVENTHANDLER_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+#define EVENTHANDLER_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+
+#if defined(_MSC_VER) ||                                            \
+    (defined(__GNUC__) && (__GNUC__ == 3 && __GNUC_MINOR__ >= 4) || \
+     (__GNUC__ >= 4))  // GCC supports "pragma once" correctly since 3.4
+#pragma once
+#endif
+
+#include <string>
+
+#include "yaml-cpp/anchor.h"
+#include "yaml-cpp/emitterstyle.h"
+
+namespace YAML {
+struct Mark;
+
+class EventHandler {
+ public:
+  virtual ~EventHandler() = default;
+
+  virtual void OnDocumentStart(const Mark& mark) = 0;
+  virtual void OnDocumentEnd() = 0;
+
+  virtual void OnNull(const Mark& mark, anchor_t anchor) = 0;
+  virtual void OnAlias(const Mark& mark, anchor_t anchor) = 0;
+  virtual void OnScalar(const Mark& mark, const std::string& tag,
+                        anchor_t anchor, const std::string& value) = 0;
+
+  virtual void OnSequenceStart(const Mark& mark, const std::string& tag,
+                               anchor_t anchor, EmitterStyle::value style) = 0;
+  virtual void OnSequenceEnd() = 0;
+
+  virtual void OnMapStart(const Mark& mark, const std::string& tag,
+                          anchor_t anchor, EmitterStyle::value style) = 0;
+  virtual void OnMapEnd() = 0;
+
+  virtual void OnAnchor(const Mark& /*mark*/,
+                        const std::string& /*anchor_name*/) {
+    // empty default implementation for compatibility
+  }
+};
+}  // namespace YAML
+
+#endif  // EVENTHANDLER_H_62B23520_7C8E_11DE_8A39_0800200C9A66

include/yaml-cpp/exceptions.h

@@ -0,0 +1,303 @@
+#ifndef EXCEPTIONS_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+#define EXCEPTIONS_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+
+#if defined(_MSC_VER) ||                                            \
+    (defined(__GNUC__) && (__GNUC__ == 3 && __GNUC_MINOR__ >= 4) || \
+     (__GNUC__ >= 4))  // GCC supports "pragma once" correctly since 3.4
+#pragma once
+#endif
+
+#include "yaml-cpp/mark.h"
+#include "yaml-cpp/noexcept.h"
+#include "yaml-cpp/traits.h"
+#include <sstream>
+#include <stdexcept>
+#include <string>
+
+namespace YAML {
+// error messages
+namespace ErrorMsg {
+const char* const YAML_DIRECTIVE_ARGS =
+    "YAML directives must have exactly one argument";
+const char* const YAML_VERSION = "bad YAML version: ";
+const char* const YAML_MAJOR_VERSION = "YAML major version too large";
+const char* const REPEATED_YAML_DIRECTIVE = "repeated YAML directive";
+const char* const TAG_DIRECTIVE_ARGS =
+    "TAG directives must have exactly two arguments";
+const char* const REPEATED_TAG_DIRECTIVE = "repeated TAG directive";
+const char* const CHAR_IN_TAG_HANDLE =
+    "illegal character found while scanning tag handle";
+const char* const TAG_WITH_NO_SUFFIX = "tag handle with no suffix";
+const char* const END_OF_VERBATIM_TAG = "end of verbatim tag not found";
+const char* const END_OF_MAP = "end of map not found";
+const char* const END_OF_MAP_FLOW = "end of map flow not found";
+const char* const END_OF_SEQ = "end of sequence not found";
+const char* const END_OF_SEQ_FLOW = "end of sequence flow not found";
+const char* const MULTIPLE_TAGS =
+    "cannot assign multiple tags to the same node";
+const char* const MULTIPLE_ANCHORS =
+    "cannot assign multiple anchors to the same node";
+const char* const MULTIPLE_ALIASES =
+    "cannot assign multiple aliases to the same node";
+const char* const ALIAS_CONTENT =
+    "aliases can't have any content, *including* tags";
+const char* const INVALID_HEX = "bad character found while scanning hex number";
+const char* const INVALID_UNICODE = "invalid unicode: ";
+const char* const INVALID_ESCAPE = "unknown escape character: ";
+const char* const UNKNOWN_TOKEN = "unknown token";
+const char* const DOC_IN_SCALAR = "illegal document indicator in scalar";
+const char* const EOF_IN_SCALAR = "illegal EOF in scalar";
+const char* const CHAR_IN_SCALAR = "illegal character in scalar";
+const char* const TAB_IN_INDENTATION =
+    "illegal tab when looking for indentation";
+const char* const FLOW_END = "illegal flow end";
+const char* const BLOCK_ENTRY = "illegal block entry";
+const char* const MAP_KEY = "illegal map key";
+const char* const MAP_VALUE = "illegal map value";
+const char* const ALIAS_NOT_FOUND = "alias not found after *";
+const char* const ANCHOR_NOT_FOUND = "anchor not found after &";
+const char* const CHAR_IN_ALIAS =
+    "illegal character found while scanning alias";
+const char* const CHAR_IN_ANCHOR =
+    "illegal character found while scanning anchor";
+const char* const ZERO_INDENT_IN_BLOCK =
+    "cannot set zero indentation for a block scalar";
+const char* const CHAR_IN_BLOCK = "unexpected character in block scalar";
+const char* const AMBIGUOUS_ANCHOR =
+    "cannot assign the same alias to multiple nodes";
+const char* const UNKNOWN_ANCHOR = "the referenced anchor is not defined: ";
+
+const char* const INVALID_NODE =
+    "invalid node; this may result from using a map iterator as a sequence "
+    "iterator, or vice-versa";
+const char* const INVALID_SCALAR = "invalid scalar";
+const char* const KEY_NOT_FOUND = "key not found";
+const char* const BAD_CONVERSION = "bad conversion";
+const char* const BAD_DEREFERENCE = "bad dereference";
+const char* const BAD_SUBSCRIPT = "operator[] call on a scalar";
+const char* const BAD_PUSHBACK = "appending to a non-sequence";
+const char* const BAD_INSERT = "inserting in a non-convertible-to-map";
+
+const char* const UNMATCHED_GROUP_TAG = "unmatched group tag";
+const char* const UNEXPECTED_END_SEQ = "unexpected end sequence token";
+const char* const UNEXPECTED_END_MAP = "unexpected end map token";
+const char* const SINGLE_QUOTED_CHAR =
+    "invalid character in single-quoted string";
+const char* const INVALID_ANCHOR = "invalid anchor";
+const char* const INVALID_ALIAS = "invalid alias";
+const char* const INVALID_TAG = "invalid tag";
+const char* const BAD_FILE = "bad file";
+
+template <typename T>
+inline const std::string KEY_NOT_FOUND_WITH_KEY(
+    const T&, typename disable_if<is_numeric<T>>::type* = 0) {
+  return KEY_NOT_FOUND;
+}
+
+inline const std::string KEY_NOT_FOUND_WITH_KEY(const std::string& key) {
+  std::stringstream stream;
+  stream << KEY_NOT_FOUND << ": " << key;
+  return stream.str();
+}
+
+inline const std::string KEY_NOT_FOUND_WITH_KEY(const char* key) {
+  std::stringstream stream;
+  stream << KEY_NOT_FOUND << ": " << key;
+  return stream.str();
+}
+
+template <typename T>
+inline const std::string KEY_NOT_FOUND_WITH_KEY(
+    const T& key, typename enable_if<is_numeric<T>>::type* = 0) {
+  std::stringstream stream;
+  stream << KEY_NOT_FOUND << ": " << key;
+  return stream.str();
+}
+
+template <typename T>
+inline const std::string BAD_SUBSCRIPT_WITH_KEY(
+    const T&, typename disable_if<is_numeric<T>>::type* = nullptr) {
+  return BAD_SUBSCRIPT;
+}
+
+inline const std::string BAD_SUBSCRIPT_WITH_KEY(const std::string& key) {
+  std::stringstream stream;
+  stream << BAD_SUBSCRIPT << " (key: \"" << key << "\")";
+  return stream.str();
+}
+
+inline const std::string BAD_SUBSCRIPT_WITH_KEY(const char* key) {
+  std::stringstream stream;
+  stream << BAD_SUBSCRIPT << " (key: \"" << key << "\")";
+  return stream.str();
+}
+
+template <typename T>
+inline const std::string BAD_SUBSCRIPT_WITH_KEY(
+    const T& key, typename enable_if<is_numeric<T>>::type* = nullptr) {
+  std::stringstream stream;
+  stream << BAD_SUBSCRIPT << " (key: \"" << key << "\")";
+  return stream.str();
+}
+
+inline const std::string INVALID_NODE_WITH_KEY(const std::string& key) {
+  std::stringstream stream;
+  if (key.empty()) {
+    return INVALID_NODE;
+  }
+  stream << "invalid node; first invalid key: \"" << key << "\"";
+  return stream.str();
+}
+}  // namespace ErrorMsg
+
+class YAML_CPP_API Exception : public std::runtime_error {
+ public:
+  Exception(const Mark& mark_, const std::string& msg_)
+      : std::runtime_error(build_what(mark_, msg_)), mark(mark_), msg(msg_) {}
+  ~Exception() YAML_CPP_NOEXCEPT override;
+
+  Exception(const Exception&) = default;
+
+  Mark mark;
+  std::string msg;
+
+ private:
+  static const std::string build_what(const Mark& mark,
+                                      const std::string& msg) {
+    if (mark.is_null()) {
+      return msg;
+    }
+
+    std::stringstream output;
+    output << "yaml-cpp: error at line " << mark.line + 1 << ", column "
+           << mark.column + 1 << ": " << msg;
+    return output.str();
+  }
+};
+
+class YAML_CPP_API ParserException : public Exception {
+ public:
+  ParserException(const Mark& mark_, const std::string& msg_)
+      : Exception(mark_, msg_) {}
+  ParserException(const ParserException&) = default;
+  ~ParserException() YAML_CPP_NOEXCEPT override;
+};
+
+class YAML_CPP_API RepresentationException : public Exception {
+ public:
+  RepresentationException(const Mark& mark_, const std::string& msg_)
+      : Exception(mark_, msg_) {}
+  RepresentationException(const RepresentationException&) = default;
+  ~RepresentationException() YAML_CPP_NOEXCEPT override;
+};
+
+// representation exceptions
+class YAML_CPP_API InvalidScalar : public RepresentationException {
+ public:
+  InvalidScalar(const Mark& mark_)
+      : RepresentationException(mark_, ErrorMsg::INVALID_SCALAR) {}
+  InvalidScalar(const InvalidScalar&) = default;
+  ~InvalidScalar() YAML_CPP_NOEXCEPT override;
+};
+
+class YAML_CPP_API KeyNotFound : public RepresentationException {
+ public:
+  template <typename T>
+  KeyNotFound(const Mark& mark_, const T& key_)
+      : RepresentationException(mark_, ErrorMsg::KEY_NOT_FOUND_WITH_KEY(key_)) {
+  }
+  KeyNotFound(const KeyNotFound&) = default;
+  ~KeyNotFound() YAML_CPP_NOEXCEPT override;
+};
+
+template <typename T>
+class YAML_CPP_API TypedKeyNotFound : public KeyNotFound {
+ public:
+  TypedKeyNotFound(const Mark& mark_, const T& key_)
+      : KeyNotFound(mark_, key_), key(key_) {}
+  ~TypedKeyNotFound() YAML_CPP_NOEXCEPT override = default;
+
+  T key;
+};
+
+template <typename T>
+inline TypedKeyNotFound<T> MakeTypedKeyNotFound(const Mark& mark,
+                                                const T& key) {
+  return TypedKeyNotFound<T>(mark, key);
+}
+
+class YAML_CPP_API InvalidNode : public RepresentationException {
+ public:
+  InvalidNode(const std::string& key)
+      : RepresentationException(Mark::null_mark(),
+                                ErrorMsg::INVALID_NODE_WITH_KEY(key)) {}
+  InvalidNode(const InvalidNode&) = default;
+  ~InvalidNode() YAML_CPP_NOEXCEPT override;
+};
+
+class YAML_CPP_API BadConversion : public RepresentationException {
+ public:
+  explicit BadConversion(const Mark& mark_)
+      : RepresentationException(mark_, ErrorMsg::BAD_CONVERSION) {}
+  BadConversion(const BadConversion&) = default;
+  ~BadConversion() YAML_CPP_NOEXCEPT override;
+};
+
+template <typename T>
+class TypedBadConversion : public BadConversion {
+ public:
+  explicit TypedBadConversion(const Mark& mark_) : BadConversion(mark_) {}
+};
+
+class YAML_CPP_API BadDereference : public RepresentationException {
+ public:
+  BadDereference()
+      : RepresentationException(Mark::null_mark(), ErrorMsg::BAD_DEREFERENCE) {}
+  BadDereference(const BadDereference&) = default;
+  ~BadDereference() YAML_CPP_NOEXCEPT override;
+};
+
+class YAML_CPP_API BadSubscript : public RepresentationException {
+ public:
+  template <typename Key>
+  BadSubscript(const Mark& mark_, const Key& key)
+      : RepresentationException(mark_, ErrorMsg::BAD_SUBSCRIPT_WITH_KEY(key)) {}
+  BadSubscript(const BadSubscript&) = default;
+  ~BadSubscript() YAML_CPP_NOEXCEPT override;
+};
+
+class YAML_CPP_API BadPushback : public RepresentationException {
+ public:
+  BadPushback()
+      : RepresentationException(Mark::null_mark(), ErrorMsg::BAD_PUSHBACK) {}
+  BadPushback(const BadPushback&) = default;
+  ~BadPushback() YAML_CPP_NOEXCEPT override;
+};
+
+class YAML_CPP_API BadInsert : public RepresentationException {
+ public:
+  BadInsert()
+      : RepresentationException(Mark::null_mark(), ErrorMsg::BAD_INSERT) {}
+  BadInsert(const BadInsert&) = default;
+  ~BadInsert() YAML_CPP_NOEXCEPT override;
+};
+
+class YAML_CPP_API EmitterException : public Exception {
+ public:
+  EmitterException(const std::string& msg_)
+      : Exception(Mark::null_mark(), msg_) {}
+  EmitterException(const EmitterException&) = default;
+  ~EmitterException() YAML_CPP_NOEXCEPT override;
+};
+
+class YAML_CPP_API BadFile : public Exception {
+ public:
+  explicit BadFile(const std::string& filename)
+      : Exception(Mark::null_mark(),
+                  std::string(ErrorMsg::BAD_FILE) + ": " + filename) {}
+  BadFile(const BadFile&) = default;
+  ~BadFile() YAML_CPP_NOEXCEPT override;
+};
+}  // namespace YAML
+
+#endif  // EXCEPTIONS_H_62B23520_7C8E_11DE_8A39_0800200C9A66

include/yaml-cpp/mark.h

@@ -0,0 +1,29 @@
+#ifndef MARK_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+#define MARK_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+
+#if defined(_MSC_VER) ||                                            \
+    (defined(__GNUC__) && (__GNUC__ == 3 && __GNUC_MINOR__ >= 4) || \
+     (__GNUC__ >= 4))  // GCC supports "pragma once" correctly since 3.4
+#pragma once
+#endif
+
+#include "yaml-cpp/dll.h"
+
+namespace YAML {
+struct YAML_CPP_API Mark {
+  Mark() : pos(0), line(0), column(0) {}
+
+  static const Mark null_mark() { return Mark(-1, -1, -1); }
+
+  bool is_null() const { return pos == -1 && line == -1 && column == -1; }
+
+  int pos;
+  int line, column;
+
+ private:
+  Mark(int pos_, int line_, int column_)
+      : pos(pos_), line(line_), column(column_) {}
+};
+}
+
+#endif  // MARK_H_62B23520_7C8E_11DE_8A39_0800200C9A66

include/yaml-cpp/node/convert.h

@@ -0,0 +1,392 @@
+#ifndef NODE_CONVERT_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+#define NODE_CONVERT_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+
+#if defined(_MSC_VER) ||                                            \
+    (defined(__GNUC__) && (__GNUC__ == 3 && __GNUC_MINOR__ >= 4) || \
+     (__GNUC__ >= 4))  // GCC supports "pragma once" correctly since 3.4
+#pragma once
+#endif
+
+#include <array>
+#include <cmath>
+#include <limits>
+#include <list>
+#include <map>
+#include <sstream>
+#include <type_traits>
+#include <vector>
+
+#include "yaml-cpp/binary.h"
+#include "yaml-cpp/node/impl.h"
+#include "yaml-cpp/node/iterator.h"
+#include "yaml-cpp/node/node.h"
+#include "yaml-cpp/node/type.h"
+#include "yaml-cpp/null.h"
+
+
+namespace YAML {
+class Binary;
+struct _Null;
+template <typename T>
+struct convert;
+}  // namespace YAML
+
+namespace YAML {
+namespace conversion {
+inline bool IsInfinity(const std::string& input) {
+  return input == ".inf" || input == ".Inf" || input == ".INF" ||
+         input == "+.inf" || input == "+.Inf" || input == "+.INF";
+}
+
+inline bool IsNegativeInfinity(const std::string& input) {
+  return input == "-.inf" || input == "-.Inf" || input == "-.INF";
+}
+
+inline bool IsNaN(const std::string& input) {
+  return input == ".nan" || input == ".NaN" || input == ".NAN";
+}
+}
+
+// Node
+template <>
+struct convert<Node> {
+  static Node encode(const Node& rhs) { return rhs; }
+
+  static bool decode(const Node& node, Node& rhs) {
+    rhs.reset(node);
+    return true;
+  }
+};
+
+// std::string
+template <>
+struct convert<std::string> {
+  static Node encode(const std::string& rhs) { return Node(rhs); }
+
+  static bool decode(const Node& node, std::string& rhs) {
+    if (!node.IsScalar())
+      return false;
+    rhs = node.Scalar();
+    return true;
+  }
+};
+
+// C-strings can only be encoded
+template <>
+struct convert<const char*> {
+  static Node encode(const char* rhs) { return Node(rhs); }
+};
+
+template <>
+struct convert<char*> {
+  static Node encode(const char* rhs) { return Node(rhs); }
+};
+
+template <std::size_t N>
+struct convert<char[N]> {
+  static Node encode(const char* rhs) { return Node(rhs); }
+};
+
+template <>
+struct convert<_Null> {
+  static Node encode(const _Null& /* rhs */) { return Node(); }
+
+  static bool decode(const Node& node, _Null& /* rhs */) {
+    return node.IsNull();
+  }
+};
+
+namespace conversion {
+template <typename T>
+typename std::enable_if< std::is_floating_point<T>::value, void>::type
+inner_encode(const T& rhs, std::stringstream& stream){
+  if (std::isnan(rhs)) {
+    stream << ".nan";
+  } else if (std::isinf(rhs)) {
+    if (std::signbit(rhs)) {
+      stream << "-.inf";
+    } else {
+      stream << ".inf";
+    }
+  } else {
+    stream << rhs;
+  }
+}
+
+template <typename T>
+typename std::enable_if<!std::is_floating_point<T>::value, void>::type
+inner_encode(const T& rhs, std::stringstream& stream){
+  stream << rhs;
+}
+
+template <typename T>
+typename std::enable_if<(std::is_same<T, unsigned char>::value ||
+                         std::is_same<T, signed char>::value), bool>::type
+ConvertStreamTo(std::stringstream& stream, T& rhs) {
+  int num;
+  if ((stream >> std::noskipws >> num) && (stream >> std::ws).eof()) {
+    if (num >= (std::numeric_limits<T>::min)() &&
+        num <= (std::numeric_limits<T>::max)()) {
+      rhs = (T)num;
+      return true;
+    }
+  }
+  return false;
+}
+
+template <typename T>
+typename std::enable_if<!(std::is_same<T, unsigned char>::value ||
+                          std::is_same<T, signed char>::value), bool>::type
+ConvertStreamTo(std::stringstream& stream, T& rhs) {
+  if ((stream >> std::noskipws >> rhs) && (stream >> std::ws).eof()) {
+    return true;
+  }
+  return false;
+}
+}
+
+#define YAML_DEFINE_CONVERT_STREAMABLE(type, negative_op)                  \
+  template <>                                                              \
+  struct convert<type> {                                                   \
+                                                                           \
+    static Node encode(const type& rhs) {                                  \
+      std::stringstream stream;                                            \
+      stream.precision(std::numeric_limits<type>::max_digits10);           \
+      conversion::inner_encode(rhs, stream);                               \
+      return Node(stream.str());                                           \
+    }                                                                      \
+                                                                           \
+    static bool decode(const Node& node, type& rhs) {                      \
+      if (node.Type() != NodeType::Scalar) {                               \
+        return false;                                                      \
+      }                                                                    \
+      const std::string& input = node.Scalar();                            \
+      std::stringstream stream(input);                                     \
+      stream.unsetf(std::ios::dec);                                        \
+      if ((stream.peek() == '-') && std::is_unsigned<type>::value) {       \
+        return false;                                                      \
+      }                                                                    \
+      if (conversion::ConvertStreamTo(stream, rhs)) {                      \
+        return true;                                                       \
+      }                                                                    \
+      if (std::numeric_limits<type>::has_infinity) {                       \
+        if (conversion::IsInfinity(input)) {                               \
+          rhs = std::numeric_limits<type>::infinity();                     \
+          return true;                                                     \
+        } else if (conversion::IsNegativeInfinity(input)) {                \
+          rhs = negative_op std::numeric_limits<type>::infinity();         \
+          return true;                                                     \
+        }                                                                  \
+      }                                                                    \
+                                                                           \
+      if (std::numeric_limits<type>::has_quiet_NaN) {                      \
+        if (conversion::IsNaN(input)) {                                    \
+          rhs = std::numeric_limits<type>::quiet_NaN();                    \
+          return true;                                                     \
+        }                                                                  \
+      }                                                                    \
+                                                                           \
+      return false;                                                        \
+    }                                                                      \
+  }
+
+#define YAML_DEFINE_CONVERT_STREAMABLE_SIGNED(type) \
+  YAML_DEFINE_CONVERT_STREAMABLE(type, -)
+
+#define YAML_DEFINE_CONVERT_STREAMABLE_UNSIGNED(type) \
+  YAML_DEFINE_CONVERT_STREAMABLE(type, +)
+
+YAML_DEFINE_CONVERT_STREAMABLE_SIGNED(int);
+YAML_DEFINE_CONVERT_STREAMABLE_SIGNED(short);
+YAML_DEFINE_CONVERT_STREAMABLE_SIGNED(long);
+YAML_DEFINE_CONVERT_STREAMABLE_SIGNED(long long);
+YAML_DEFINE_CONVERT_STREAMABLE_UNSIGNED(unsigned);
+YAML_DEFINE_CONVERT_STREAMABLE_UNSIGNED(unsigned short);
+YAML_DEFINE_CONVERT_STREAMABLE_UNSIGNED(unsigned long);
+YAML_DEFINE_CONVERT_STREAMABLE_UNSIGNED(unsigned long long);
+
+YAML_DEFINE_CONVERT_STREAMABLE_SIGNED(char);
+YAML_DEFINE_CONVERT_STREAMABLE_SIGNED(signed char);
+YAML_DEFINE_CONVERT_STREAMABLE_UNSIGNED(unsigned char);
+
+YAML_DEFINE_CONVERT_STREAMABLE_SIGNED(float);
+YAML_DEFINE_CONVERT_STREAMABLE_SIGNED(double);
+YAML_DEFINE_CONVERT_STREAMABLE_SIGNED(long double);
+
+#undef YAML_DEFINE_CONVERT_STREAMABLE_SIGNED
+#undef YAML_DEFINE_CONVERT_STREAMABLE_UNSIGNED
+#undef YAML_DEFINE_CONVERT_STREAMABLE
+
+// bool
+template <>
+struct convert<bool> {
+  static Node encode(bool rhs) { return rhs ? Node("true") : Node("false"); }
+
+  YAML_CPP_API static bool decode(const Node& node, bool& rhs);
+};
+
+// std::map
+template <typename K, typename V, typename C, typename A>
+struct convert<std::map<K, V, C, A>> {
+  static Node encode(const std::map<K, V, C, A>& rhs) {
+    Node node(NodeType::Map);
+    for (const auto& element : rhs)
+      node.force_insert(element.first, element.second);
+    return node;
+  }
+
+  static bool decode(const Node& node, std::map<K, V, C, A>& rhs) {
+    if (!node.IsMap())
+      return false;
+
+    rhs.clear();
+    for (const auto& element : node)
+#if defined(__GNUC__) && __GNUC__ < 4
+      // workaround for GCC 3:
+      rhs[element.first.template as<K>()] = element.second.template as<V>();
+#else
+      rhs[element.first.as<K>()] = element.second.as<V>();
+#endif
+    return true;
+  }
+};
+
+// std::vector
+template <typename T, typename A>
+struct convert<std::vector<T, A>> {
+  static Node encode(const std::vector<T, A>& rhs) {
+    Node node(NodeType::Sequence);
+    for (const auto& element : rhs)
+      node.push_back(element);
+    return node;
+  }
+
+  static bool decode(const Node& node, std::vector<T, A>& rhs) {
+    if (!node.IsSequence())
+      return false;
+
+    rhs.clear();
+    for (const auto& element : node)
+#if defined(__GNUC__) && __GNUC__ < 4
+      // workaround for GCC 3:
+      rhs.push_back(element.template as<T>());
+#else
+      rhs.push_back(element.as<T>());
+#endif
+    return true;
+  }
+};
+
+// std::list
+template <typename T, typename A>
+struct convert<std::list<T,A>> {
+  static Node encode(const std::list<T,A>& rhs) {
+    Node node(NodeType::Sequence);
+    for (const auto& element : rhs)
+      node.push_back(element);
+    return node;
+  }
+
+  static bool decode(const Node& node, std::list<T,A>& rhs) {
+    if (!node.IsSequence())
+      return false;
+
+    rhs.clear();
+    for (const auto& element : node)
+#if defined(__GNUC__) && __GNUC__ < 4
+      // workaround for GCC 3:
+      rhs.push_back(element.template as<T>());
+#else
+      rhs.push_back(element.as<T>());
+#endif
+    return true;
+  }
+};
+
+// std::array
+template <typename T, std::size_t N>
+struct convert<std::array<T, N>> {
+  static Node encode(const std::array<T, N>& rhs) {
+    Node node(NodeType::Sequence);
+    for (const auto& element : rhs) {
+      node.push_back(element);
+    }
+    return node;
+  }
+
+  static bool decode(const Node& node, std::array<T, N>& rhs) {
+    if (!isNodeValid(node)) {
+      return false;
+    }
+
+    for (auto i = 0u; i < node.size(); ++i) {
+#if defined(__GNUC__) && __GNUC__ < 4
+      // workaround for GCC 3:
+      rhs[i] = node[i].template as<T>();
+#else
+      rhs[i] = node[i].as<T>();
+#endif
+    }
+    return true;
+  }
+
+ private:
+  static bool isNodeValid(const Node& node) {
+    return node.IsSequence() && node.size() == N;
+  }
+};
+
+// std::pair
+template <typename T, typename U>
+struct convert<std::pair<T, U>> {
+  static Node encode(const std::pair<T, U>& rhs) {
+    Node node(NodeType::Sequence);
+    node.push_back(rhs.first);
+    node.push_back(rhs.second);
+    return node;
+  }
+
+  static bool decode(const Node& node, std::pair<T, U>& rhs) {
+    if (!node.IsSequence())
+      return false;
+    if (node.size() != 2)
+      return false;
+
+#if defined(__GNUC__) && __GNUC__ < 4
+    // workaround for GCC 3:
+    rhs.first = node[0].template as<T>();
+#else
+    rhs.first = node[0].as<T>();
+#endif
+#if defined(__GNUC__) && __GNUC__ < 4
+    // workaround for GCC 3:
+    rhs.second = node[1].template as<U>();
+#else
+    rhs.second = node[1].as<U>();
+#endif
+    return true;
+  }
+};
+
+// binary
+template <>
+struct convert<Binary> {
+  static Node encode(const Binary& rhs) {
+    return Node(EncodeBase64(rhs.data(), rhs.size()));
+  }
+
+  static bool decode(const Node& node, Binary& rhs) {
+    if (!node.IsScalar())
+      return false;
+
+    std::vector<unsigned char> data = DecodeBase64(node.Scalar());
+    if (data.empty() && !node.Scalar().empty())
+      return false;
+
+    rhs.swap(data);
+    return true;
+  }
+};
+}
+
+#endif  // NODE_CONVERT_H_62B23520_7C8E_11DE_8A39_0800200C9A66

include/yaml-cpp/node/detail/impl.h

@@ -0,0 +1,235 @@
+#ifndef NODE_DETAIL_IMPL_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+#define NODE_DETAIL_IMPL_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+
+#if defined(_MSC_VER) ||                                            \
+    (defined(__GNUC__) && (__GNUC__ == 3 && __GNUC_MINOR__ >= 4) || \
+     (__GNUC__ >= 4))  // GCC supports "pragma once" correctly since 3.4
+#pragma once
+#endif
+
+#include "yaml-cpp/node/detail/node.h"
+#include "yaml-cpp/node/detail/node_data.h"
+
+#include <algorithm>
+#include <type_traits>
+
+namespace YAML {
+namespace detail {
+template <typename Key, typename Enable = void>
+struct get_idx {
+  static node* get(const std::vector<node*>& /* sequence */,
+                   const Key& /* key */, shared_memory_holder /* pMemory */) {
+    return nullptr;
+  }
+};
+
+template <typename Key>
+struct get_idx<Key,
+               typename std::enable_if<std::is_unsigned<Key>::value &&
+                                       !std::is_same<Key, bool>::value>::type> {
+  static node* get(const std::vector<node*>& sequence, const Key& key,
+                   shared_memory_holder /* pMemory */) {
+    return key < sequence.size() ? sequence[key] : nullptr;
+  }
+
+  static node* get(std::vector<node*>& sequence, const Key& key,
+                   shared_memory_holder pMemory) {
+    if (key > sequence.size() || (key > 0 && !sequence[key - 1]->is_defined()))
+      return nullptr;
+    if (key == sequence.size())
+      sequence.push_back(&pMemory->create_node());
+    return sequence[key];
+  }
+};
+
+template <typename Key>
+struct get_idx<Key, typename std::enable_if<std::is_signed<Key>::value>::type> {
+  static node* get(const std::vector<node*>& sequence, const Key& key,
+                   shared_memory_holder pMemory) {
+    return key >= 0 ? get_idx<std::size_t>::get(
+                          sequence, static_cast<std::size_t>(key), pMemory)
+                    : nullptr;
+  }
+  static node* get(std::vector<node*>& sequence, const Key& key,
+                   shared_memory_holder pMemory) {
+    return key >= 0 ? get_idx<std::size_t>::get(
+                          sequence, static_cast<std::size_t>(key), pMemory)
+                    : nullptr;
+  }
+};
+
+template <typename Key, typename Enable = void>
+struct remove_idx {
+  static bool remove(std::vector<node*>&, const Key&, std::size_t&) {
+    return false;
+  }
+};
+
+template <typename Key>
+struct remove_idx<
+    Key, typename std::enable_if<std::is_unsigned<Key>::value &&
+                                 !std::is_same<Key, bool>::value>::type> {
+
+  static bool remove(std::vector<node*>& sequence, const Key& key,
+                     std::size_t& seqSize) {
+    if (key >= sequence.size()) {
+      return false;
+    } else {
+      sequence.erase(sequence.begin() + key);
+      if (seqSize > key) {
+          --seqSize;
+      }
+      return true;
+    }
+  }
+};
+
+template <typename Key>
+struct remove_idx<Key,
+                  typename std::enable_if<std::is_signed<Key>::value>::type> {
+
+  static bool remove(std::vector<node*>& sequence, const Key& key,
+                     std::size_t& seqSize) {
+    return key >= 0 ? remove_idx<std::size_t>::remove(
+                          sequence, static_cast<std::size_t>(key), seqSize)
+                    : false;
+  }
+};
+
+template <typename T>
+inline bool node::equals(const T& rhs, shared_memory_holder pMemory) {
+  T lhs;
+  if (convert<T>::decode(Node(*this, pMemory), lhs)) {
+    return lhs == rhs;
+  }
+  return false;
+}
+
+inline bool node::equals(const char* rhs, shared_memory_holder pMemory) {
+  std::string lhs;
+  if (convert<std::string>::decode(Node(*this, std::move(pMemory)), lhs)) {
+    return lhs == rhs;
+  }
+  return false;
+}
+
+// indexing
+template <typename Key>
+inline node* node_data::get(const Key& key,
+                            shared_memory_holder pMemory) const {
+  switch (m_type) {
+    case NodeType::Map:
+      break;
+    case NodeType::Undefined:
+    case NodeType::Null:
+      return nullptr;
+    case NodeType::Sequence:
+      if (node* pNode = get_idx<Key>::get(m_sequence, key, pMemory))
+        return pNode;
+      return nullptr;
+    case NodeType::Scalar:
+      throw BadSubscript(m_mark, key);
+  }
+
+  auto it = std::find_if(m_map.begin(), m_map.end(), [&](const kv_pair m) {
+    return m.first->equals(key, pMemory);
+  });
+
+  return it != m_map.end() ? it->second : nullptr;
+}
+
+template <typename Key>
+inline node& node_data::get(const Key& key, shared_memory_holder pMemory) {
+  switch (m_type) {
+    case NodeType::Map:
+      break;
+    case NodeType::Undefined:
+    case NodeType::Null:
+    case NodeType::Sequence:
+      if (node* pNode = get_idx<Key>::get(m_sequence, key, pMemory)) {
+        m_type = NodeType::Sequence;
+        return *pNode;
+      }
+
+      convert_to_map(pMemory);
+      break;
+    case NodeType::Scalar:
+      throw BadSubscript(m_mark, key);
+  }
+
+  auto it = std::find_if(m_map.begin(), m_map.end(), [&](const kv_pair m) {
+    return m.first->equals(key, pMemory);
+  });
+
+  if (it != m_map.end()) {
+    return *it->second;
+  }
+
+  node& k = convert_to_node(key, pMemory);
+  node& v = pMemory->create_node();
+  insert_map_pair(k, v);
+  return v;
+}
+
+template <typename Key>
+inline bool node_data::remove(const Key& key, shared_memory_holder pMemory) {
+  if (m_type == NodeType::Sequence) {
+    return remove_idx<Key>::remove(m_sequence, key, m_seqSize);
+  }
+
+  if (m_type == NodeType::Map) {
+    kv_pairs::iterator it = m_undefinedPairs.begin();
+    while (it != m_undefinedPairs.end()) {
+      kv_pairs::iterator jt = std::next(it);
+      if (it->first->equals(key, pMemory)) {
+        m_undefinedPairs.erase(it);
+      }
+      it = jt;
+    }
+
+    auto iter = std::find_if(m_map.begin(), m_map.end(), [&](const kv_pair m) {
+      return m.first->equals(key, pMemory);
+    });
+
+    if (iter != m_map.end()) {
+      m_map.erase(iter);
+      return true;
+    }
+  }
+
+  return false;
+}
+
+// map
+template <typename Key, typename Value>
+inline void node_data::force_insert(const Key& key, const Value& value,
+                                    shared_memory_holder pMemory) {
+  switch (m_type) {
+    case NodeType::Map:
+      break;
+    case NodeType::Undefined:
+    case NodeType::Null:
+    case NodeType::Sequence:
+      convert_to_map(pMemory);
+      break;
+    case NodeType::Scalar:
+      throw BadInsert();
+  }
+
+  node& k = convert_to_node(key, pMemory);
+  node& v = convert_to_node(value, pMemory);
+  insert_map_pair(k, v);
+}
+
+template <typename T>
+inline node& node_data::convert_to_node(const T& rhs,
+                                        shared_memory_holder pMemory) {
+  Node value = convert<T>::encode(rhs);
+  value.EnsureNodeExists();
+  pMemory->merge(*value.m_pMemory);
+  return *value.m_pNode;
+}
+}
+}
+
+#endif  // NODE_DETAIL_IMPL_H_62B23520_7C8E_11DE_8A39_0800200C9A66

include/yaml-cpp/node/detail/iterator.h

@@ -0,0 +1,96 @@
+#ifndef VALUE_DETAIL_ITERATOR_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+#define VALUE_DETAIL_ITERATOR_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+
+#if defined(_MSC_VER) ||                                            \
+    (defined(__GNUC__) && (__GNUC__ == 3 && __GNUC_MINOR__ >= 4) || \
+     (__GNUC__ >= 4))  // GCC supports "pragma once" correctly since 3.4
+#pragma once
+#endif
+
+#include "yaml-cpp/dll.h"
+#include "yaml-cpp/node/detail/node_iterator.h"
+#include "yaml-cpp/node/node.h"
+#include "yaml-cpp/node/ptr.h"
+#include <cstddef>
+#include <iterator>
+
+
+namespace YAML {
+namespace detail {
+struct iterator_value;
+
+template <typename V>
+class iterator_base {
+
+ private:
+  template <typename>
+  friend class iterator_base;
+  struct enabler {};
+  using base_type = node_iterator;
+
+  struct proxy {
+    explicit proxy(const V& x) : m_ref(x) {}
+    V* operator->() { return std::addressof(m_ref); }
+    operator V*() { return std::addressof(m_ref); }
+
+    V m_ref;
+  };
+
+ public:
+  using iterator_category = std::forward_iterator_tag;
+  using value_type = V;
+  using difference_type = std::ptrdiff_t;
+  using pointer = V*;
+  using reference = V;
+
+ public:
+  iterator_base() : m_iterator(), m_pMemory() {}
+  explicit iterator_base(base_type rhs, shared_memory_holder pMemory)
+      : m_iterator(rhs), m_pMemory(pMemory) {}
+
+  template <class W>
+  iterator_base(const iterator_base<W>& rhs,
+                typename std::enable_if<std::is_convertible<W*, V*>::value,
+                                        enabler>::type = enabler())
+      : m_iterator(rhs.m_iterator), m_pMemory(rhs.m_pMemory) {}
+
+  iterator_base<V>& operator++() {
+    ++m_iterator;
+    return *this;
+  }
+
+  iterator_base<V> operator++(int) {
+    iterator_base<V> iterator_pre(*this);
+    ++(*this);
+    return iterator_pre;
+  }
+
+  template <typename W>
+  bool operator==(const iterator_base<W>& rhs) const {
+    return m_iterator == rhs.m_iterator;
+  }
+
+  template <typename W>
+  bool operator!=(const iterator_base<W>& rhs) const {
+    return m_iterator != rhs.m_iterator;
+  }
+
+  value_type operator*() const {
+    const typename base_type::value_type& v = *m_iterator;
+    if (v.pNode)
+      return value_type(Node(*v, m_pMemory));
+    if (v.first && v.second)
+      return value_type(Node(*v.first, m_pMemory), Node(*v.second, m_pMemory));
+    return value_type();
+  }
+
+  proxy operator->() const { return proxy(**this); }
+
+ private:
+  base_type m_iterator;
+  shared_memory_holder m_pMemory;
+};
+}  // namespace detail
+}  // namespace YAML
+
+#endif  // VALUE_DETAIL_ITERATOR_H_62B23520_7C8E_11DE_8A39_0800200C9A66

include/yaml-cpp/node/detail/iterator_fwd.h

@@ -0,0 +1,27 @@
+#ifndef VALUE_DETAIL_ITERATOR_FWD_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+#define VALUE_DETAIL_ITERATOR_FWD_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+
+#if defined(_MSC_VER) ||                                            \
+    (defined(__GNUC__) && (__GNUC__ == 3 && __GNUC_MINOR__ >= 4) || \
+     (__GNUC__ >= 4))  // GCC supports "pragma once" correctly since 3.4
+#pragma once
+#endif
+
+#include "yaml-cpp/dll.h"
+#include <list>
+#include <utility>
+#include <vector>
+
+namespace YAML {
+
+namespace detail {
+struct iterator_value;
+template <typename V>
+class iterator_base;
+}
+
+using iterator = detail::iterator_base<detail::iterator_value>;
+using const_iterator = detail::iterator_base<const detail::iterator_value>;
+}
+
+#endif  // VALUE_DETAIL_ITERATOR_FWD_H_62B23520_7C8E_11DE_8A39_0800200C9A66

include/yaml-cpp/node/detail/memory.h

@@ -0,0 +1,47 @@
+#ifndef VALUE_DETAIL_MEMORY_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+#define VALUE_DETAIL_MEMORY_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+
+#if defined(_MSC_VER) ||                                            \
+    (defined(__GNUC__) && (__GNUC__ == 3 && __GNUC_MINOR__ >= 4) || \
+     (__GNUC__ >= 4))  // GCC supports "pragma once" correctly since 3.4
+#pragma once
+#endif
+
+#include <set>
+
+#include "yaml-cpp/dll.h"
+#include "yaml-cpp/node/ptr.h"
+
+namespace YAML {
+namespace detail {
+class node;
+}  // namespace detail
+}  // namespace YAML
+
+namespace YAML {
+namespace detail {
+class YAML_CPP_API memory {
+ public:
+  memory() : m_nodes{} {}
+  node& create_node();
+  void merge(const memory& rhs);
+
+ private:
+  using Nodes = std::set<shared_node>;
+  Nodes m_nodes;
+};
+
+class YAML_CPP_API memory_holder {
+ public:
+  memory_holder() : m_pMemory(new memory) {}
+
+  node& create_node() { return m_pMemory->create_node(); }
+  void merge(memory_holder& rhs);
+
+ private:
+  shared_memory m_pMemory;
+};
+}  // namespace detail
+}  // namespace YAML
+
+#endif  // VALUE_DETAIL_MEMORY_H_62B23520_7C8E_11DE_8A39_0800200C9A66

include/yaml-cpp/node/detail/node.h

@@ -0,0 +1,177 @@
+#ifndef NODE_DETAIL_NODE_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+#define NODE_DETAIL_NODE_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+
+#if defined(_MSC_VER) ||                                            \
+    (defined(__GNUC__) && (__GNUC__ == 3 && __GNUC_MINOR__ >= 4) || \
+     (__GNUC__ >= 4))  // GCC supports "pragma once" correctly since 3.4
+#pragma once
+#endif
+
+#include "yaml-cpp/dll.h"
+#include "yaml-cpp/emitterstyle.h"
+#include "yaml-cpp/node/detail/node_ref.h"
+#include "yaml-cpp/node/ptr.h"
+#include "yaml-cpp/node/type.h"
+#include <set>
+#include <atomic>
+
+namespace YAML {
+namespace detail {
+class node {
+ private:
+  struct less {
+    bool operator ()(const node* l, const node* r) const {return l->m_index < r->m_index;}
+  };
+
+ public:
+  node() : m_pRef(new node_ref), m_dependencies{}, m_index{} {}
+  node(const node&) = delete;
+  node& operator=(const node&) = delete;
+
+  bool is(const node& rhs) const { return m_pRef == rhs.m_pRef; }
+  const node_ref* ref() const { return m_pRef.get(); }
+
+  bool is_defined() const { return m_pRef->is_defined(); }
+  const Mark& mark() const { return m_pRef->mark(); }
+  NodeType::value type() const { return m_pRef->type(); }
+
+  const std::string& scalar() const { return m_pRef->scalar(); }
+  const std::string& tag() const { return m_pRef->tag(); }
+  EmitterStyle::value style() const { return m_pRef->style(); }
+
+  template <typename T>
+  bool equals(const T& rhs, shared_memory_holder pMemory);
+  bool equals(const char* rhs, shared_memory_holder pMemory);
+
+  void mark_defined() {
+    if (is_defined())
+      return;
+
+    m_pRef->mark_defined();
+    for (node* dependency : m_dependencies)
+      dependency->mark_defined();
+    m_dependencies.clear();
+  }
+
+  void add_dependency(node& rhs) {
+    if (is_defined())
+      rhs.mark_defined();
+    else
+      m_dependencies.insert(&rhs);
+  }
+
+  void set_ref(const node& rhs) {
+    if (rhs.is_defined())
+      mark_defined();
+    m_pRef = rhs.m_pRef;
+  }
+  void set_data(const node& rhs) {
+    if (rhs.is_defined())
+      mark_defined();
+    m_pRef->set_data(*rhs.m_pRef);
+  }
+
+  void set_mark(const Mark& mark) { m_pRef->set_mark(mark); }
+
+  void set_type(NodeType::value type) {
+    if (type != NodeType::Undefined)
+      mark_defined();
+    m_pRef->set_type(type);
+  }
+  void set_null() {
+    mark_defined();
+    m_pRef->set_null();
+  }
+  void set_scalar(const std::string& scalar) {
+    mark_defined();
+    m_pRef->set_scalar(scalar);
+  }
+  void set_tag(const std::string& tag) {
+    mark_defined();
+    m_pRef->set_tag(tag);
+  }
+
+  // style
+  void set_style(EmitterStyle::value style) {
+    mark_defined();
+    m_pRef->set_style(style);
+  }
+
+  // size/iterator
+  std::size_t size() const { return m_pRef->size(); }
+
+  const_node_iterator begin() const {
+    return static_cast<const node_ref&>(*m_pRef).begin();
+  }
+  node_iterator begin() { return m_pRef->begin(); }
+
+  const_node_iterator end() const {
+    return static_cast<const node_ref&>(*m_pRef).end();
+  }
+  node_iterator end() { return m_pRef->end(); }
+
+  // sequence
+  void push_back(node& input, shared_memory_holder pMemory) {
+    m_pRef->push_back(input, pMemory);
+    input.add_dependency(*this);
+    m_index = m_amount.fetch_add(1);
+  }
+  void insert(node& key, node& value, shared_memory_holder pMemory) {
+    m_pRef->insert(key, value, pMemory);
+    key.add_dependency(*this);
+    value.add_dependency(*this);
+  }
+
+  // indexing
+  template <typename Key>
+  node* get(const Key& key, shared_memory_holder pMemory) const {
+    // NOTE: this returns a non-const node so that the top-level Node can wrap
+    // it, and returns a pointer so that it can be nullptr (if there is no such
+    // key).
+    return static_cast<const node_ref&>(*m_pRef).get(key, pMemory);
+  }
+  template <typename Key>
+  node& get(const Key& key, shared_memory_holder pMemory) {
+    node& value = m_pRef->get(key, pMemory);
+    value.add_dependency(*this);
+    return value;
+  }
+  template <typename Key>
+  bool remove(const Key& key, shared_memory_holder pMemory) {
+    return m_pRef->remove(key, pMemory);
+  }
+
+  node* get(node& key, shared_memory_holder pMemory) const {
+    // NOTE: this returns a non-const node so that the top-level Node can wrap
+    // it, and returns a pointer so that it can be nullptr (if there is no such
+    // key).
+    return static_cast<const node_ref&>(*m_pRef).get(key, pMemory);
+  }
+  node& get(node& key, shared_memory_holder pMemory) {
+    node& value = m_pRef->get(key, pMemory);
+    key.add_dependency(*this);
+    value.add_dependency(*this);
+    return value;
+  }
+  bool remove(node& key, shared_memory_holder pMemory) {
+    return m_pRef->remove(key, pMemory);
+  }
+
+  // map
+  template <typename Key, typename Value>
+  void force_insert(const Key& key, const Value& value,
+                    shared_memory_holder pMemory) {
+    m_pRef->force_insert(key, value, pMemory);
+  }
+
+ private:
+  shared_node_ref m_pRef;
+  using nodes = std::set<node*, less>;
+  nodes m_dependencies;
+  size_t m_index;
+  static std::atomic<size_t> m_amount;
+};
+}  // namespace detail
+}  // namespace YAML
+
+#endif  // NODE_DETAIL_NODE_H_62B23520_7C8E_11DE_8A39_0800200C9A66

include/yaml-cpp/node/detail/node_data.h

@@ -0,0 +1,127 @@
+#ifndef VALUE_DETAIL_NODE_DATA_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+#define VALUE_DETAIL_NODE_DATA_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+
+#if defined(_MSC_VER) ||                                            \
+    (defined(__GNUC__) && (__GNUC__ == 3 && __GNUC_MINOR__ >= 4) || \
+     (__GNUC__ >= 4))  // GCC supports "pragma once" correctly since 3.4
+#pragma once
+#endif
+
+#include <list>
+#include <map>
+#include <string>
+#include <utility>
+#include <vector>
+
+#include "yaml-cpp/dll.h"
+#include "yaml-cpp/node/detail/node_iterator.h"
+#include "yaml-cpp/node/iterator.h"
+#include "yaml-cpp/node/ptr.h"
+#include "yaml-cpp/node/type.h"
+
+namespace YAML {
+namespace detail {
+class node;
+}  // namespace detail
+}  // namespace YAML
+
+namespace YAML {
+namespace detail {
+class YAML_CPP_API node_data {
+ public:
+  node_data();
+  node_data(const node_data&) = delete;
+  node_data& operator=(const node_data&) = delete;
+
+  void mark_defined();
+  void set_mark(const Mark& mark);
+  void set_type(NodeType::value type);
+  void set_tag(const std::string& tag);
+  void set_null();
+  void set_scalar(const std::string& scalar);
+  void set_style(EmitterStyle::value style);
+
+  bool is_defined() const { return m_isDefined; }
+  const Mark& mark() const { return m_mark; }
+  NodeType::value type() const {
+    return m_isDefined ? m_type : NodeType::Undefined;
+  }
+  const std::string& scalar() const { return m_scalar; }
+  const std::string& tag() const { return m_tag; }
+  EmitterStyle::value style() const { return m_style; }
+
+  // size/iterator
+  std::size_t size() const;
+
+  const_node_iterator begin() const;
+  node_iterator begin();
+
+  const_node_iterator end() const;
+  node_iterator end();
+
+  // sequence
+  void push_back(node& node, const shared_memory_holder& pMemory);
+  void insert(node& key, node& value, const shared_memory_holder& pMemory);
+
+  // indexing
+  template <typename Key>
+  node* get(const Key& key, shared_memory_holder pMemory) const;
+  template <typename Key>
+  node& get(const Key& key, shared_memory_holder pMemory);
+  template <typename Key>
+  bool remove(const Key& key, shared_memory_holder pMemory);
+
+  node* get(node& key, const shared_memory_holder& pMemory) const;
+  node& get(node& key, const shared_memory_holder& pMemory);
+  bool remove(node& key, const shared_memory_holder& pMemory);
+
+  // map
+  template <typename Key, typename Value>
+  void force_insert(const Key& key, const Value& value,
+                    shared_memory_holder pMemory);
+
+ public:
+  static const std::string& empty_scalar();
+
+ private:
+  void compute_seq_size() const;
+  void compute_map_size() const;
+
+  void reset_sequence();
+  void reset_map();
+
+  void insert_map_pair(node& key, node& value);
+  void convert_to_map(const shared_memory_holder& pMemory);
+  void convert_sequence_to_map(const shared_memory_holder& pMemory);
+
+  template <typename T>
+  static node& convert_to_node(const T& rhs, shared_memory_holder pMemory);
+
+ private:
+  bool m_isDefined;
+  Mark m_mark;
+  NodeType::value m_type;
+  std::string m_tag;
+  EmitterStyle::value m_style;
+
+  // scalar
+  std::string m_scalar;
+
+  // sequence
+  using node_seq = std::vector<node *>;
+  node_seq m_sequence;
+
+  mutable std::size_t m_seqSize;
+
+  // map
+  using node_map = std::vector<std::pair<node*, node*>>;
+  node_map m_map;
+
+  using kv_pair = std::pair<node*, node*>;
+  using kv_pairs = std::list<kv_pair>;
+  mutable kv_pairs m_undefinedPairs;
+};
+}
+}
+
+#endif  // VALUE_DETAIL_NODE_DATA_H_62B23520_7C8E_11DE_8A39_0800200C9A66

include/yaml-cpp/node/detail/node_iterator.h

@@ -0,0 +1,181 @@
+#ifndef VALUE_DETAIL_NODE_ITERATOR_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+#define VALUE_DETAIL_NODE_ITERATOR_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+
+#if defined(_MSC_VER) ||                                            \
+    (defined(__GNUC__) && (__GNUC__ == 3 && __GNUC_MINOR__ >= 4) || \
+     (__GNUC__ >= 4))  // GCC supports "pragma once" correctly since 3.4
+#pragma once
+#endif
+
+#include "yaml-cpp/dll.h"
+#include "yaml-cpp/node/ptr.h"
+#include <cstddef>
+#include <iterator>
+#include <memory>
+#include <map>
+#include <utility>
+#include <vector>
+
+namespace YAML {
+namespace detail {
+struct iterator_type {
+  enum value { NoneType, Sequence, Map };
+};
+
+template <typename V>
+struct node_iterator_value : public std::pair<V*, V*> {
+  using kv = std::pair<V*, V*>;
+
+  node_iterator_value() : kv(), pNode(nullptr) {}
+  explicit node_iterator_value(V& rhs) : kv(), pNode(&rhs) {}
+  explicit node_iterator_value(V& key, V& value) : kv(&key, &value), pNode(nullptr) {}
+
+  V& operator*() const { return *pNode; }
+  V& operator->() const { return *pNode; }
+
+  V* pNode;
+};
+
+using node_seq = std::vector<node *>;
+using node_map = std::vector<std::pair<node*, node*>>;
+
+template <typename V>
+struct node_iterator_type {
+  using seq = node_seq::iterator;
+  using map = node_map::iterator;
+};
+
+template <typename V>
+struct node_iterator_type<const V> {
+  using seq = node_seq::const_iterator;
+  using map = node_map::const_iterator;
+};
+
+template <typename V>
+class node_iterator_base {
+ private:
+  struct enabler {};
+
+  struct proxy {
+    explicit proxy(const node_iterator_value<V>& x) : m_ref(x) {}
+    node_iterator_value<V>* operator->() { return std::addressof(m_ref); }
+    operator node_iterator_value<V>*() { return std::addressof(m_ref); }
+
+    node_iterator_value<V> m_ref;
+  };
+
+ public:
+  using iterator_category = std::forward_iterator_tag;
+  using value_type = node_iterator_value<V>;
+  using difference_type = std::ptrdiff_t;
+  using pointer = node_iterator_value<V>*;
+  using reference = node_iterator_value<V>;
+  using SeqIter = typename node_iterator_type<V>::seq;
+  using MapIter = typename node_iterator_type<V>::map;
+
+  node_iterator_base()
+      : m_type(iterator_type::NoneType), m_seqIt(), m_mapIt(), m_mapEnd() {}
+  explicit node_iterator_base(SeqIter seqIt)
+      : m_type(iterator_type::Sequence),
+        m_seqIt(seqIt),
+        m_mapIt(),
+        m_mapEnd() {}
+  explicit node_iterator_base(MapIter mapIt, MapIter mapEnd)
+      : m_type(iterator_type::Map),
+        m_seqIt(),
+        m_mapIt(mapIt),
+        m_mapEnd(mapEnd) {
+    m_mapIt = increment_until_defined(m_mapIt);
+  }
+
+  template <typename W>
+  node_iterator_base(const node_iterator_base<W>& rhs,
+                     typename std::enable_if<std::is_convertible<W*, V*>::value,
+                                             enabler>::type = enabler())
+      : m_type(rhs.m_type),
+        m_seqIt(rhs.m_seqIt),
+        m_mapIt(rhs.m_mapIt),
+        m_mapEnd(rhs.m_mapEnd) {}
+
+  template <typename>
+  friend class node_iterator_base;
+
+  template <typename W>
+  bool operator==(const node_iterator_base<W>& rhs) const {
+    if (m_type != rhs.m_type)
+      return false;
+
+    switch (m_type) {
+      case iterator_type::NoneType:
+        return true;
+      case iterator_type::Sequence:
+        return m_seqIt == rhs.m_seqIt;
+      case iterator_type::Map:
+        return m_mapIt == rhs.m_mapIt;
+    }
+    return true;
+  }
+
+  template <typename W>
+  bool operator!=(const node_iterator_base<W>& rhs) const {
+    return !(*this == rhs);
+  }
+
+  node_iterator_base<V>& operator++() {
+    switch (m_type) {
+      case iterator_type::NoneType:
+        break;
+      case iterator_type::Sequence:
+        ++m_seqIt;
+        break;
+      case iterator_type::Map:
+        ++m_mapIt;
+        m_mapIt = increment_until_defined(m_mapIt);
+        break;
+    }
+    return *this;
+  }
+
+  node_iterator_base<V> operator++(int) {
+    node_iterator_base<V> iterator_pre(*this);
+    ++(*this);
+    return iterator_pre;
+  }
+
+  value_type operator*() const {
+    switch (m_type) {
+      case iterator_type::NoneType:
+        return value_type();
+      case iterator_type::Sequence:
+        return value_type(**m_seqIt);
+      case iterator_type::Map:
+        return value_type(*m_mapIt->first, *m_mapIt->second);
+    }
+    return value_type();
+  }
+
+  proxy operator->() const { return proxy(**this); }
+
+  MapIter increment_until_defined(MapIter it) {
+    while (it != m_mapEnd && !is_defined(it))
+      ++it;
+    return it;
+  }
+
+  bool is_defined(MapIter it) const {
+    return it->first->is_defined() && it->second->is_defined();
+  }
+
+ private:
+  typename iterator_type::value m_type;
+
+  SeqIter m_seqIt;
+  MapIter m_mapIt, m_mapEnd;
+};
+
+using node_iterator = node_iterator_base<node>;
+using const_node_iterator = node_iterator_base<const node>;
+}
+}
+
+#endif  // VALUE_DETAIL_NODE_ITERATOR_H_62B23520_7C8E_11DE_8A39_0800200C9A66

include/yaml-cpp/node/detail/node_ref.h

@@ -0,0 +1,98 @@
+#ifndef VALUE_DETAIL_NODE_REF_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+#define VALUE_DETAIL_NODE_REF_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+
+#if defined(_MSC_VER) ||                                            \
+    (defined(__GNUC__) && (__GNUC__ == 3 && __GNUC_MINOR__ >= 4) || \
+     (__GNUC__ >= 4))  // GCC supports "pragma once" correctly since 3.4
+#pragma once
+#endif
+
+#include "yaml-cpp/dll.h"
+#include "yaml-cpp/node/type.h"
+#include "yaml-cpp/node/ptr.h"
+#include "yaml-cpp/node/detail/node_data.h"
+
+namespace YAML {
+namespace detail {
+class node_ref {
+ public:
+  node_ref() : m_pData(new node_data) {}
+  node_ref(const node_ref&) = delete;
+  node_ref& operator=(const node_ref&) = delete;
+
+  bool is_defined() const { return m_pData->is_defined(); }
+  const Mark& mark() const { return m_pData->mark(); }
+  NodeType::value type() const { return m_pData->type(); }
+  const std::string& scalar() const { return m_pData->scalar(); }
+  const std::string& tag() const { return m_pData->tag(); }
+  EmitterStyle::value style() const { return m_pData->style(); }
+
+  void mark_defined() { m_pData->mark_defined(); }
+  void set_data(const node_ref& rhs) { m_pData = rhs.m_pData; }
+
+  void set_mark(const Mark& mark) { m_pData->set_mark(mark); }
+  void set_type(NodeType::value type) { m_pData->set_type(type); }
+  void set_tag(const std::string& tag) { m_pData->set_tag(tag); }
+  void set_null() { m_pData->set_null(); }
+  void set_scalar(const std::string& scalar) { m_pData->set_scalar(scalar); }
+  void set_style(EmitterStyle::value style) { m_pData->set_style(style); }
+
+  // size/iterator
+  std::size_t size() const { return m_pData->size(); }
+
+  const_node_iterator begin() const {
+    return static_cast<const node_data&>(*m_pData).begin();
+  }
+  node_iterator begin() { return m_pData->begin(); }
+
+  const_node_iterator end() const {
+    return static_cast<const node_data&>(*m_pData).end();
+  }
+  node_iterator end() { return m_pData->end(); }
+
+  // sequence
+  void push_back(node& node, shared_memory_holder pMemory) {
+    m_pData->push_back(node, pMemory);
+  }
+  void insert(node& key, node& value, shared_memory_holder pMemory) {
+    m_pData->insert(key, value, pMemory);
+  }
+
+  // indexing
+  template <typename Key>
+  node* get(const Key& key, shared_memory_holder pMemory) const {
+    return static_cast<const node_data&>(*m_pData).get(key, pMemory);
+  }
+  template <typename Key>
+  node& get(const Key& key, shared_memory_holder pMemory) {
+    return m_pData->get(key, pMemory);
+  }
+  template <typename Key>
+  bool remove(const Key& key, shared_memory_holder pMemory) {
+    return m_pData->remove(key, pMemory);
+  }
+
+  node* get(node& key, shared_memory_holder pMemory) const {
+    return static_cast<const node_data&>(*m_pData).get(key, pMemory);
+  }
+  node& get(node& key, shared_memory_holder pMemory) {
+    return m_pData->get(key, pMemory);
+  }
+  bool remove(node& key, shared_memory_holder pMemory) {
+    return m_pData->remove(key, pMemory);
+  }
+
+  // map
+  template <typename Key, typename Value>
+  void force_insert(const Key& key, const Value& value,
+                    shared_memory_holder pMemory) {
+    m_pData->force_insert(key, value, pMemory);
+  }
+
+ private:
+  shared_node_data m_pData;
+};
+}
+}
+
+#endif  // VALUE_DETAIL_NODE_REF_H_62B23520_7C8E_11DE_8A39_0800200C9A66

include/yaml-cpp/node/emit.h

@@ -0,0 +1,32 @@
+#ifndef NODE_EMIT_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+#define NODE_EMIT_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+
+#if defined(_MSC_VER) ||                                            \
+    (defined(__GNUC__) && (__GNUC__ == 3 && __GNUC_MINOR__ >= 4) || \
+     (__GNUC__ >= 4))  // GCC supports "pragma once" correctly since 3.4
+#pragma once
+#endif
+
+#include <string>
+#include <iosfwd>
+
+#include "yaml-cpp/dll.h"
+
+namespace YAML {
+class Emitter;
+class Node;
+
+/**
+ * Emits the node to the given {@link Emitter}. If there is an error in writing,
+ * {@link Emitter#good} will return false.
+ */
+YAML_CPP_API Emitter& operator<<(Emitter& out, const Node& node);
+
+/** Emits the node to the given output stream. */
+YAML_CPP_API std::ostream& operator<<(std::ostream& out, const Node& node);
+
+/** Converts the node to a YAML string. */
+YAML_CPP_API std::string Dump(const Node& node);
+}  // namespace YAML
+
+#endif  // NODE_EMIT_H_62B23520_7C8E_11DE_8A39_0800200C9A66

include/yaml-cpp/node/impl.h

@@ -0,0 +1,385 @@
+#ifndef NODE_IMPL_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+#define NODE_IMPL_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+
+#if defined(_MSC_VER) ||                                            \
+    (defined(__GNUC__) && (__GNUC__ == 3 && __GNUC_MINOR__ >= 4) || \
+     (__GNUC__ >= 4))  // GCC supports "pragma once" correctly since 3.4
+#pragma once
+#endif
+
+#include "yaml-cpp/exceptions.h"
+#include "yaml-cpp/node/detail/memory.h"
+#include "yaml-cpp/node/detail/node.h"
+#include "yaml-cpp/node/iterator.h"
+#include "yaml-cpp/node/node.h"
+#include <sstream>
+#include <string>
+
+namespace YAML {
+inline Node::Node()
+    : m_isValid(true), m_invalidKey{}, m_pMemory(nullptr), m_pNode(nullptr) {}
+
+inline Node::Node(NodeType::value type)
+    : m_isValid(true),
+      m_invalidKey{},
+      m_pMemory(new detail::memory_holder),
+      m_pNode(&m_pMemory->create_node()) {
+  m_pNode->set_type(type);
+}
+
+template <typename T>
+inline Node::Node(const T& rhs)
+    : m_isValid(true),
+      m_invalidKey{},
+      m_pMemory(new detail::memory_holder),
+      m_pNode(&m_pMemory->create_node()) {
+  Assign(rhs);
+}
+
+inline Node::Node(const detail::iterator_value& rhs)
+    : m_isValid(rhs.m_isValid),
+      m_invalidKey(rhs.m_invalidKey),
+      m_pMemory(rhs.m_pMemory),
+      m_pNode(rhs.m_pNode) {}
+
+inline Node::Node(const Node&) = default;
+
+inline Node::Node(Zombie)
+    : m_isValid(false), m_invalidKey{}, m_pMemory{}, m_pNode(nullptr) {}
+
+inline Node::Node(Zombie, const std::string& key)
+    : m_isValid(false), m_invalidKey(key), m_pMemory{}, m_pNode(nullptr) {}
+
+inline Node::Node(detail::node& node, detail::shared_memory_holder pMemory)
+    : m_isValid(true), m_invalidKey{}, m_pMemory(pMemory), m_pNode(&node) {}
+
+inline Node::~Node() = default;
+
+inline void Node::EnsureNodeExists() const {
+  if (!m_isValid)
+    throw InvalidNode(m_invalidKey);
+  if (!m_pNode) {
+    m_pMemory.reset(new detail::memory_holder);
+    m_pNode = &m_pMemory->create_node();
+    m_pNode->set_null();
+  }
+}
+
+inline bool Node::IsDefined() const {
+  if (!m_isValid) {
+    return false;
+  }
+  return m_pNode ? m_pNode->is_defined() : true;
+}
+
+inline Mark Node::Mark() const {
+  if (!m_isValid) {
+    throw InvalidNode(m_invalidKey);
+  }
+  return m_pNode ? m_pNode->mark() : Mark::null_mark();
+}
+
+inline NodeType::value Node::Type() const {
+  if (!m_isValid)
+    throw InvalidNode(m_invalidKey);
+  return m_pNode ? m_pNode->type() : NodeType::Null;
+}
+
+// access
+
+// template helpers
+template <typename T, typename S>
+struct as_if {
+  explicit as_if(const Node& node_) : node(node_) {}
+  const Node& node;
+
+  T operator()(const S& fallback) const {
+    if (!node.m_pNode)
+      return fallback;
+
+    T t;
+    if (convert<T>::decode(node, t))
+      return t;
+    return fallback;
+  }
+};
+
+template <typename S>
+struct as_if<std::string, S> {
+  explicit as_if(const Node& node_) : node(node_) {}
+  const Node& node;
+
+  std::string operator()(const S& fallback) const {
+    if (node.Type() == NodeType::Null)
+      return "null";
+    if (node.Type() != NodeType::Scalar)
+      return fallback;
+    return node.Scalar();
+  }
+};
+
+template <typename T>
+struct as_if<T, void> {
+  explicit as_if(const Node& node_) : node(node_) {}
+  const Node& node;
+
+  T operator()() const {
+    if (!node.m_pNode)
+      throw TypedBadConversion<T>(node.Mark());
+
+    T t;
+    if (convert<T>::decode(node, t))
+      return t;
+    throw TypedBadConversion<T>(node.Mark());
+  }
+};
+
+template <>
+struct as_if<std::string, void> {
+  explicit as_if(const Node& node_) : node(node_) {}
+  const Node& node;
+
+  std::string operator()() const {
+    if (node.Type() == NodeType::Null)
+      return "null";
+    if (node.Type() != NodeType::Scalar)
+      throw TypedBadConversion<std::string>(node.Mark());
+    return node.Scalar();
+  }
+};
+
+// access functions
+template <typename T>
+inline T Node::as() const {
+  if (!m_isValid)
+    throw InvalidNode(m_invalidKey);
+  return as_if<T, void>(*this)();
+}
+
+template <typename T, typename S>
+inline T Node::as(const S& fallback) const {
+  if (!m_isValid)
+    return fallback;
+  return as_if<T, S>(*this)(fallback);
+}
+
+inline const std::string& Node::Scalar() const {
+  if (!m_isValid)
+    throw InvalidNode(m_invalidKey);
+  return m_pNode ? m_pNode->scalar() : detail::node_data::empty_scalar();
+}
+
+inline const std::string& Node::Tag() const {
+  if (!m_isValid)
+    throw InvalidNode(m_invalidKey);
+  return m_pNode ? m_pNode->tag() : detail::node_data::empty_scalar();
+}
+
+inline void Node::SetTag(const std::string& tag) {
+  EnsureNodeExists();
+  m_pNode->set_tag(tag);
+}
+
+inline EmitterStyle::value Node::Style() const {
+  if (!m_isValid)
+    throw InvalidNode(m_invalidKey);
+  return m_pNode ? m_pNode->style() : EmitterStyle::Default;
+}
+
+inline void Node::SetStyle(EmitterStyle::value style) {
+  EnsureNodeExists();
+  m_pNode->set_style(style);
+}
+
+// assignment
+inline bool Node::is(const Node& rhs) const {
+  if (!m_isValid || !rhs.m_isValid)
+    throw InvalidNode(m_invalidKey);
+  if (!m_pNode || !rhs.m_pNode)
+    return false;
+  return m_pNode->is(*rhs.m_pNode);
+}
+
+template <typename T>
+inline Node& Node::operator=(const T& rhs) {
+  Assign(rhs);
+  return *this;
+}
+
+inline Node& Node::operator=(const Node& rhs) {
+  if (is(rhs))
+    return *this;
+  AssignNode(rhs);
+  return *this;
+}
+
+inline void Node::reset(const YAML::Node& rhs) {
+  if (!m_isValid || !rhs.m_isValid)
+    throw InvalidNode(m_invalidKey);
+  m_pMemory = rhs.m_pMemory;
+  m_pNode = rhs.m_pNode;
+}
+
+template <typename T>
+inline void Node::Assign(const T& rhs) {
+  if (!m_isValid)
+    throw InvalidNode(m_invalidKey);
+  AssignData(convert<T>::encode(rhs));
+}
+
+template <>
+inline void Node::Assign(const std::string& rhs) {
+  EnsureNodeExists();
+  m_pNode->set_scalar(rhs);
+}
+
+inline void Node::Assign(const char* rhs) {
+  EnsureNodeExists();
+  m_pNode->set_scalar(rhs);
+}
+
+inline void Node::Assign(char* rhs) {
+  EnsureNodeExists();
+  m_pNode->set_scalar(rhs);
+}
+
+inline void Node::AssignData(const Node& rhs) {
+  EnsureNodeExists();
+  rhs.EnsureNodeExists();
+
+  m_pNode->set_data(*rhs.m_pNode);
+  m_pMemory->merge(*rhs.m_pMemory);
+}
+
+inline void Node::AssignNode(const Node& rhs) {
+  if (!m_isValid)
+    throw InvalidNode(m_invalidKey);
+  rhs.EnsureNodeExists();
+
+  if (!m_pNode) {
+    m_pNode = rhs.m_pNode;
+    m_pMemory = rhs.m_pMemory;
+    return;
+  }
+
+  m_pNode->set_ref(*rhs.m_pNode);
+  m_pMemory->merge(*rhs.m_pMemory);
+  m_pNode = rhs.m_pNode;
+}
+
+// size/iterator
+inline std::size_t Node::size() const {
+  if (!m_isValid)
+    throw InvalidNode(m_invalidKey);
+  return m_pNode ? m_pNode->size() : 0;
+}
+
+inline const_iterator Node::begin() const {
+  if (!m_isValid)
+    return const_iterator();
+  return m_pNode ? const_iterator(m_pNode->begin(), m_pMemory)
+                 : const_iterator();
+}
+
+inline iterator Node::begin() {
+  if (!m_isValid)
+    return iterator();
+  return m_pNode ? iterator(m_pNode->begin(), m_pMemory) : iterator();
+}
+
+inline const_iterator Node::end() const {
+  if (!m_isValid)
+    return const_iterator();
+  return m_pNode ? const_iterator(m_pNode->end(), m_pMemory) : const_iterator();
+}
+
+inline iterator Node::end() {
+  if (!m_isValid)
+    return iterator();
+  return m_pNode ? iterator(m_pNode->end(), m_pMemory) : iterator();
+}
+
+// sequence
+template <typename T>
+inline void Node::push_back(const T& rhs) {
+  if (!m_isValid)
+    throw InvalidNode(m_invalidKey);
+  push_back(Node(rhs));
+}
+
+inline void Node::push_back(const Node& rhs) {
+  EnsureNodeExists();
+  rhs.EnsureNodeExists();
+
+  m_pNode->push_back(*rhs.m_pNode, m_pMemory);
+  m_pMemory->merge(*rhs.m_pMemory);
+}
+
+template<typename Key>
+std::string key_to_string(const Key& key) {
+  return streamable_to_string<Key, is_streamable<std::stringstream, Key>::value>().impl(key);
+}
+
+// indexing
+template <typename Key>
+inline const Node Node::operator[](const Key& key) const {
+  EnsureNodeExists();
+  detail::node* value =
+      static_cast<const detail::node&>(*m_pNode).get(key, m_pMemory);
+  if (!value) {
+    return Node(ZombieNode, key_to_string(key));
+  }
+  return Node(*value, m_pMemory);
+}
+
+template <typename Key>
+inline Node Node::operator[](const Key& key) {
+  EnsureNodeExists();
+  detail::node& value = m_pNode->get(key, m_pMemory);
+  return Node(value, m_pMemory);
+}
+
+template <typename Key>
+inline bool Node::remove(const Key& key) {
+  EnsureNodeExists();
+  return m_pNode->remove(key, m_pMemory);
+}
+
+inline const Node Node::operator[](const Node& key) const {
+  EnsureNodeExists();
+  key.EnsureNodeExists();
+  m_pMemory->merge(*key.m_pMemory);
+  detail::node* value =
+      static_cast<const detail::node&>(*m_pNode).get(*key.m_pNode, m_pMemory);
+  if (!value) {
+    return Node(ZombieNode, key_to_string(key));
+  }
+  return Node(*value, m_pMemory);
+}
+
+inline Node Node::operator[](const Node& key) {
+  EnsureNodeExists();
+  key.EnsureNodeExists();
+  m_pMemory->merge(*key.m_pMemory);
+  detail::node& value = m_pNode->get(*key.m_pNode, m_pMemory);
+  return Node(value, m_pMemory);
+}
+
+inline bool Node::remove(const Node& key) {
+  EnsureNodeExists();
+  key.EnsureNodeExists();
+  return m_pNode->remove(*key.m_pNode, m_pMemory);
+}
+
+// map
+template <typename Key, typename Value>
+inline void Node::force_insert(const Key& key, const Value& value) {
+  EnsureNodeExists();
+  m_pNode->force_insert(key, value, m_pMemory);
+}
+
+// free functions
+inline bool operator==(const Node& lhs, const Node& rhs) { return lhs.is(rhs); }
+}  // namespace YAML
+
+#endif  // NODE_IMPL_H_62B23520_7C8E_11DE_8A39_0800200C9A66

include/yaml-cpp/node/iterator.h

@@ -0,0 +1,34 @@
+#ifndef VALUE_ITERATOR_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+#define VALUE_ITERATOR_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+
+#if defined(_MSC_VER) ||                                            \
+    (defined(__GNUC__) && (__GNUC__ == 3 && __GNUC_MINOR__ >= 4) || \
+     (__GNUC__ >= 4))  // GCC supports "pragma once" correctly since 3.4
+#pragma once
+#endif
+
+#include "yaml-cpp/dll.h"
+#include "yaml-cpp/node/node.h"
+#include "yaml-cpp/node/detail/iterator_fwd.h"
+#include "yaml-cpp/node/detail/iterator.h"
+#include <list>
+#include <utility>
+#include <vector>
+
+// Assert in place so gcc + libc++ combination properly builds
+static_assert(std::is_constructible<YAML::Node, const YAML::Node&>::value, "Node must be copy constructable");
+
+namespace YAML {
+namespace detail {
+struct iterator_value : public Node, std::pair<Node, Node> {
+  iterator_value() = default;
+  explicit iterator_value(const Node& rhs)
+      : Node(rhs),
+        std::pair<Node, Node>(Node(Node::ZombieNode), Node(Node::ZombieNode)) {}
+  explicit iterator_value(const Node& key, const Node& value)
+      : Node(Node::ZombieNode), std::pair<Node, Node>(key, value) {}
+};
+}
+}
+
+#endif  // VALUE_ITERATOR_H_62B23520_7C8E_11DE_8A39_0800200C9A66

include/yaml-cpp/node/node.h

@@ -0,0 +1,148 @@
+#ifndef NODE_NODE_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+#define NODE_NODE_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+
+#if defined(_MSC_VER) ||                                            \
+    (defined(__GNUC__) && (__GNUC__ == 3 && __GNUC_MINOR__ >= 4) || \
+     (__GNUC__ >= 4))  // GCC supports "pragma once" correctly since 3.4
+#pragma once
+#endif
+
+#include <stdexcept>
+#include <string>
+
+#include "yaml-cpp/dll.h"
+#include "yaml-cpp/emitterstyle.h"
+#include "yaml-cpp/mark.h"
+#include "yaml-cpp/node/detail/iterator_fwd.h"
+#include "yaml-cpp/node/ptr.h"
+#include "yaml-cpp/node/type.h"
+
+namespace YAML {
+namespace detail {
+class node;
+class node_data;
+struct iterator_value;
+}  // namespace detail
+}  // namespace YAML
+
+namespace YAML {
+class YAML_CPP_API Node {
+ public:
+  friend class NodeBuilder;
+  friend class NodeEvents;
+  friend struct detail::iterator_value;
+  friend class detail::node;
+  friend class detail::node_data;
+  template <typename>
+  friend class detail::iterator_base;
+  template <typename T, typename S>
+  friend struct as_if;
+
+  using iterator = YAML::iterator;
+  using const_iterator = YAML::const_iterator;
+
+  Node();
+  explicit Node(NodeType::value type);
+  template <typename T>
+  explicit Node(const T& rhs);
+  explicit Node(const detail::iterator_value& rhs);
+  Node(const Node& rhs);
+  ~Node();
+
+  YAML::Mark Mark() const;
+  NodeType::value Type() const;
+  bool IsDefined() const;
+  bool IsNull() const { return Type() == NodeType::Null; }
+  bool IsScalar() const { return Type() == NodeType::Scalar; }
+  bool IsSequence() const { return Type() == NodeType::Sequence; }
+  bool IsMap() const { return Type() == NodeType::Map; }
+
+  // bool conversions
+  explicit operator bool() const { return IsDefined(); }
+  bool operator!() const { return !IsDefined(); }
+
+  // access
+  template <typename T>
+  T as() const;
+  template <typename T, typename S>
+  T as(const S& fallback) const;
+  const std::string& Scalar() const;
+
+  const std::string& Tag() const;
+  void SetTag(const std::string& tag);
+
+  // style
+  // WARNING: This API might change in future releases.
+  EmitterStyle::value Style() const;
+  void SetStyle(EmitterStyle::value style);
+
+  // assignment
+  bool is(const Node& rhs) const;
+  template <typename T>
+  Node& operator=(const T& rhs);
+  Node& operator=(const Node& rhs);
+  void reset(const Node& rhs = Node());
+
+  // size/iterator
+  std::size_t size() const;
+
+  const_iterator begin() const;
+  iterator begin();
+
+  const_iterator end() const;
+  iterator end();
+
+  // sequence
+  template <typename T>
+  void push_back(const T& rhs);
+  void push_back(const Node& rhs);
+
+  // indexing
+  template <typename Key>
+  const Node operator[](const Key& key) const;
+  template <typename Key>
+  Node operator[](const Key& key);
+  template <typename Key>
+  bool remove(const Key& key);
+
+  const Node operator[](const Node& key) const;
+  Node operator[](const Node& key);
+  bool remove(const Node& key);
+
+  // map
+  template <typename Key, typename Value>
+  void force_insert(const Key& key, const Value& value);
+
+ private:
+  enum Zombie { ZombieNode };
+  explicit Node(Zombie);
+  explicit Node(Zombie, const std::string&);
+  explicit Node(detail::node& node, detail::shared_memory_holder pMemory);
+
+  void EnsureNodeExists() const;
+
+  template <typename T>
+  void Assign(const T& rhs);
+  void Assign(const char* rhs);
+  void Assign(char* rhs);
+
+  void AssignData(const Node& rhs);
+  void AssignNode(const Node& rhs);
+
+ private:
+  bool m_isValid;
+  // String representation of invalid key, if the node is invalid.
+  std::string m_invalidKey;
+  mutable detail::shared_memory_holder m_pMemory;
+  mutable detail::node* m_pNode;
+};
+
+YAML_CPP_API bool operator==(const Node& lhs, const Node& rhs);
+
+YAML_CPP_API Node Clone(const Node& node);
+
+template <typename T>
+struct convert;
+}
+
+#endif  // NODE_NODE_H_62B23520_7C8E_11DE_8A39_0800200C9A66

include/yaml-cpp/node/parse.h

@@ -0,0 +1,78 @@
+#ifndef VALUE_PARSE_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+#define VALUE_PARSE_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+
+#if defined(_MSC_VER) ||                                            \
+    (defined(__GNUC__) && (__GNUC__ == 3 && __GNUC_MINOR__ >= 4) || \
+     (__GNUC__ >= 4))  // GCC supports "pragma once" correctly since 3.4
+#pragma once
+#endif
+
+#include <iosfwd>
+#include <string>
+#include <vector>
+
+#include "yaml-cpp/dll.h"
+
+namespace YAML {
+class Node;
+
+/**
+ * Loads the input string as a single YAML document.
+ *
+ * @throws {@link ParserException} if it is malformed.
+ */
+YAML_CPP_API Node Load(const std::string& input);
+
+/**
+ * Loads the input string as a single YAML document.
+ *
+ * @throws {@link ParserException} if it is malformed.
+ */
+YAML_CPP_API Node Load(const char* input);
+
+/**
+ * Loads the input stream as a single YAML document.
+ *
+ * @throws {@link ParserException} if it is malformed.
+ */
+YAML_CPP_API Node Load(std::istream& input);
+
+/**
+ * Loads the input file as a single YAML document.
+ *
+ * @throws {@link ParserException} if it is malformed.
+ * @throws {@link BadFile} if the file cannot be loaded.
+ */
+YAML_CPP_API Node LoadFile(const std::string& filename);
+
+/**
+ * Loads the input string as a list of YAML documents.
+ *
+ * @throws {@link ParserException} if it is malformed.
+ */
+YAML_CPP_API std::vector<Node> LoadAll(const std::string& input);
+
+/**
+ * Loads the input string as a list of YAML documents.
+ *
+ * @throws {@link ParserException} if it is malformed.
+ */
+YAML_CPP_API std::vector<Node> LoadAll(const char* input);
+
+/**
+ * Loads the input stream as a list of YAML documents.
+ *
+ * @throws {@link ParserException} if it is malformed.
+ */
+YAML_CPP_API std::vector<Node> LoadAll(std::istream& input);
+
+/**
+ * Loads the input file as a list of YAML documents.
+ *
+ * @throws {@link ParserException} if it is malformed.
+ * @throws {@link BadFile} if the file cannot be loaded.
+ */
+YAML_CPP_API std::vector<Node> LoadAllFromFile(const std::string& filename);
+}  // namespace YAML
+
+#endif  // VALUE_PARSE_H_62B23520_7C8E_11DE_8A39_0800200C9A66

include/yaml-cpp/node/ptr.h

@@ -0,0 +1,29 @@
+#ifndef VALUE_PTR_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+#define VALUE_PTR_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+
+#if defined(_MSC_VER) ||                                            \
+    (defined(__GNUC__) && (__GNUC__ == 3 && __GNUC_MINOR__ >= 4) || \
+     (__GNUC__ >= 4))  // GCC supports "pragma once" correctly since 3.4
+#pragma once
+#endif
+
+#include "yaml-cpp/dll.h"
+#include <memory>
+
+namespace YAML {
+namespace detail {
+class node;
+class node_ref;
+class node_data;
+class memory;
+class memory_holder;
+
+using shared_node = std::shared_ptr<node>;
+using shared_node_ref = std::shared_ptr<node_ref>;
+using shared_node_data = std::shared_ptr<node_data>;
+using shared_memory_holder = std::shared_ptr<memory_holder>;
+using shared_memory = std::shared_ptr<memory>;
+}
+}
+
+#endif  // VALUE_PTR_H_62B23520_7C8E_11DE_8A39_0800200C9A66

include/yaml-cpp/node/type.h

@@ -0,0 +1,16 @@
+#ifndef VALUE_TYPE_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+#define VALUE_TYPE_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+
+#if defined(_MSC_VER) ||                                            \
+    (defined(__GNUC__) && (__GNUC__ == 3 && __GNUC_MINOR__ >= 4) || \
+     (__GNUC__ >= 4))  // GCC supports "pragma once" correctly since 3.4
+#pragma once
+#endif
+
+namespace YAML {
+struct NodeType {
+  enum value { Undefined, Null, Scalar, Sequence, Map };
+};
+}
+
+#endif  // VALUE_TYPE_H_62B23520_7C8E_11DE_8A39_0800200C9A66

include/yaml-cpp/noexcept.h

@@ -0,0 +1,18 @@
+#ifndef NOEXCEPT_H_768872DA_476C_11EA_88B8_90B11C0C0FF8
+#define NOEXCEPT_H_768872DA_476C_11EA_88B8_90B11C0C0FF8
+
+#if defined(_MSC_VER) ||                                            \
+    (defined(__GNUC__) && (__GNUC__ == 3 && __GNUC_MINOR__ >= 4) || \
+     (__GNUC__ >= 4))  // GCC supports "pragma once" correctly since 3.4
+#pragma once
+#endif
+
+// This is here for compatibility with older versions of Visual Studio
+// which don't support noexcept.
+#if defined(_MSC_VER) && _MSC_VER < 1900
+    #define YAML_CPP_NOEXCEPT _NOEXCEPT
+#else
+    #define YAML_CPP_NOEXCEPT noexcept
+#endif
+
+#endif

include/yaml-cpp/null.h

@@ -0,0 +1,26 @@
+#ifndef NULL_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+#define NULL_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+
+#if defined(_MSC_VER) ||                                            \
+    (defined(__GNUC__) && (__GNUC__ == 3 && __GNUC_MINOR__ >= 4) || \
+     (__GNUC__ >= 4))  // GCC supports "pragma once" correctly since 3.4
+#pragma once
+#endif
+
+#include "yaml-cpp/dll.h"
+#include <string>
+
+namespace YAML {
+class Node;
+
+struct YAML_CPP_API _Null {};
+inline bool operator==(const _Null&, const _Null&) { return true; }
+inline bool operator!=(const _Null&, const _Null&) { return false; }
+
+YAML_CPP_API bool IsNull(const Node& node);  // old API only
+YAML_CPP_API bool IsNullString(const std::string& str);
+
+extern YAML_CPP_API _Null Null;
+}
+
+#endif  // NULL_H_62B23520_7C8E_11DE_8A39_0800200C9A66

include/yaml-cpp/ostream_wrapper.h

@@ -0,0 +1,76 @@
+#ifndef OSTREAM_WRAPPER_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+#define OSTREAM_WRAPPER_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+
+#if defined(_MSC_VER) ||                                            \
+    (defined(__GNUC__) && (__GNUC__ == 3 && __GNUC_MINOR__ >= 4) || \
+     (__GNUC__ >= 4))  // GCC supports "pragma once" correctly since 3.4
+#pragma once
+#endif
+
+#include <string>
+#include <vector>
+
+#include "yaml-cpp/dll.h"
+
+namespace YAML {
+class YAML_CPP_API ostream_wrapper {
+ public:
+  ostream_wrapper();
+  explicit ostream_wrapper(std::ostream& stream);
+  ostream_wrapper(const ostream_wrapper&) = delete;
+  ostream_wrapper(ostream_wrapper&&) = delete;
+  ostream_wrapper& operator=(const ostream_wrapper&) = delete;
+  ostream_wrapper& operator=(ostream_wrapper&&) = delete;
+  ~ostream_wrapper();
+
+  void write(const std::string& str);
+  void write(const char* str, std::size_t size);
+
+  void set_comment() { m_comment = true; }
+
+  const char* str() const {
+    if (m_pStream) {
+      return nullptr;
+    } else {
+      m_buffer[m_pos] = '\0';
+      return &m_buffer[0];
+    }
+  }
+
+  std::size_t row() const { return m_row; }
+  std::size_t col() const { return m_col; }
+  std::size_t pos() const { return m_pos; }
+  bool comment() const { return m_comment; }
+
+ private:
+  void update_pos(char ch);
+
+ private:
+  mutable std::vector<char> m_buffer;
+  std::ostream* const m_pStream;
+
+  std::size_t m_pos;
+  std::size_t m_row, m_col;
+  bool m_comment;
+};
+
+template <std::size_t N>
+inline ostream_wrapper& operator<<(ostream_wrapper& stream,
+                                   const char (&str)[N]) {
+  stream.write(str, N - 1);
+  return stream;
+}
+
+inline ostream_wrapper& operator<<(ostream_wrapper& stream,
+                                   const std::string& str) {
+  stream.write(str);
+  return stream;
+}
+
+inline ostream_wrapper& operator<<(ostream_wrapper& stream, char ch) {
+  stream.write(&ch, 1);
+  return stream;
+}
+}  // namespace YAML
+
+#endif  // OSTREAM_WRAPPER_H_62B23520_7C8E_11DE_8A39_0800200C9A66

include/yaml-cpp/parser.h

@@ -0,0 +1,90 @@
+#ifndef PARSER_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+#define PARSER_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+
+#if defined(_MSC_VER) ||                                            \
+    (defined(__GNUC__) && (__GNUC__ == 3 && __GNUC_MINOR__ >= 4) || \
+     (__GNUC__ >= 4))  // GCC supports "pragma once" correctly since 3.4
+#pragma once
+#endif
+
+#include <ios>
+#include <memory>
+
+#include "yaml-cpp/dll.h"
+
+namespace YAML {
+class EventHandler;
+class Node;
+class Scanner;
+struct Directives;
+struct Token;
+
+/**
+ * A parser turns a stream of bytes into one stream of "events" per YAML
+ * document in the input stream.
+ */
+class YAML_CPP_API Parser {
+ public:
+  /** Constructs an empty parser (with no input. */
+  Parser();
+
+  Parser(const Parser&) = delete;
+  Parser(Parser&&) = delete;
+  Parser& operator=(const Parser&) = delete;
+  Parser& operator=(Parser&&) = delete;
+
+  /**
+   * Constructs a parser from the given input stream. The input stream must
+   * live as long as the parser.
+   */
+  explicit Parser(std::istream& in);
+
+  ~Parser();
+
+  /** Evaluates to true if the parser has some valid input to be read. */
+  explicit operator bool() const;
+
+  /**
+   * Resets the parser with the given input stream. Any existing state is
+   * erased.
+   */
+  void Load(std::istream& in);
+
+  /**
+   * Handles the next document by calling events on the {@code eventHandler}.
+   *
+   * @throw a ParserException on error.
+   * @return false if there are no more documents
+   */
+  bool HandleNextDocument(EventHandler& eventHandler);
+
+  void PrintTokens(std::ostream& out);
+
+ private:
+  /**
+   * Reads any directives that are next in the queue, setting the internal
+   * {@code m_pDirectives} state.
+   */
+  void ParseDirectives();
+
+  void HandleDirective(const Token& token);
+
+  /**
+   * Handles a "YAML" directive, which should be of the form 'major.minor' (like
+   * a version number).
+   */
+  void HandleYamlDirective(const Token& token);
+
+  /**
+   * Handles a "TAG" directive, which should be of the form 'handle prefix',
+   * where 'handle' is converted to 'prefix' in the file.
+   */
+  void HandleTagDirective(const Token& token);
+
+ private:
+  std::unique_ptr<Scanner> m_pScanner;
+  std::unique_ptr<Directives> m_pDirectives;
+};
+}  // namespace YAML
+
+#endif  // PARSER_H_62B23520_7C8E_11DE_8A39_0800200C9A66

include/yaml-cpp/stlemitter.h

@@ -0,0 +1,50 @@
+#ifndef STLEMITTER_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+#define STLEMITTER_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+
+#if defined(_MSC_VER) ||                                            \
+    (defined(__GNUC__) && (__GNUC__ == 3 && __GNUC_MINOR__ >= 4) || \
+     (__GNUC__ >= 4))  // GCC supports "pragma once" correctly since 3.4
+#pragma once
+#endif
+
+#include <vector>
+#include <list>
+#include <set>
+#include <map>
+
+namespace YAML {
+template <typename Seq>
+inline Emitter& EmitSeq(Emitter& emitter, const Seq& seq) {
+  emitter << BeginSeq;
+  for (const auto& v : seq)
+    emitter << v;
+  emitter << EndSeq;
+  return emitter;
+}
+
+template <typename T>
+inline Emitter& operator<<(Emitter& emitter, const std::vector<T>& v) {
+  return EmitSeq(emitter, v);
+}
+
+template <typename T>
+inline Emitter& operator<<(Emitter& emitter, const std::list<T>& v) {
+  return EmitSeq(emitter, v);
+}
+
+template <typename T>
+inline Emitter& operator<<(Emitter& emitter, const std::set<T>& v) {
+  return EmitSeq(emitter, v);
+}
+
+template <typename K, typename V>
+inline Emitter& operator<<(Emitter& emitter, const std::map<K, V>& m) {
+  emitter << BeginMap;
+  for (const auto& v : m)
+    emitter << Key << v.first << Value << v.second;
+  emitter << EndMap;
+  return emitter;
+}
+}
+
+#endif  // STLEMITTER_H_62B23520_7C8E_11DE_8A39_0800200C9A66

include/yaml-cpp/traits.h

@@ -0,0 +1,135 @@
+#ifndef TRAITS_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+#define TRAITS_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+
+#if defined(_MSC_VER) ||                                            \
+    (defined(__GNUC__) && (__GNUC__ == 3 && __GNUC_MINOR__ >= 4) || \
+     (__GNUC__ >= 4))  // GCC supports "pragma once" correctly since 3.4
+#pragma once
+#endif
+
+#include <type_traits>
+#include <utility>
+#include <string>
+#include <sstream>
+
+namespace YAML {
+template <typename>
+struct is_numeric {
+  enum { value = false };
+};
+
+template <>
+struct is_numeric<char> {
+  enum { value = true };
+};
+template <>
+struct is_numeric<unsigned char> {
+  enum { value = true };
+};
+template <>
+struct is_numeric<int> {
+  enum { value = true };
+};
+template <>
+struct is_numeric<unsigned int> {
+  enum { value = true };
+};
+template <>
+struct is_numeric<long int> {
+  enum { value = true };
+};
+template <>
+struct is_numeric<unsigned long int> {
+  enum { value = true };
+};
+template <>
+struct is_numeric<short int> {
+  enum { value = true };
+};
+template <>
+struct is_numeric<unsigned short int> {
+  enum { value = true };
+};
+#if defined(_MSC_VER) && (_MSC_VER < 1310)
+template <>
+struct is_numeric<__int64> {
+  enum { value = true };
+};
+template <>
+struct is_numeric<unsigned __int64> {
+  enum { value = true };
+};
+#else
+template <>
+struct is_numeric<long long> {
+  enum { value = true };
+};
+template <>
+struct is_numeric<unsigned long long> {
+  enum { value = true };
+};
+#endif
+template <>
+struct is_numeric<float> {
+  enum { value = true };
+};
+template <>
+struct is_numeric<double> {
+  enum { value = true };
+};
+template <>
+struct is_numeric<long double> {
+  enum { value = true };
+};
+
+template <bool, class T = void>
+struct enable_if_c {
+  using type = T;
+};
+
+template <class T>
+struct enable_if_c<false, T> {};
+
+template <class Cond, class T = void>
+struct enable_if : public enable_if_c<Cond::value, T> {};
+
+template <bool, class T = void>
+struct disable_if_c {
+  using type = T;
+};
+
+template <class T>
+struct disable_if_c<true, T> {};
+
+template <class Cond, class T = void>
+struct disable_if : public disable_if_c<Cond::value, T> {};
+}
+
+template <typename S, typename T>
+struct is_streamable {
+  template <typename SS, typename TT>
+  static auto test(int)
+      -> decltype(std::declval<SS&>() << std::declval<TT>(), std::true_type());
+
+  template <typename, typename>
+  static auto test(...) -> std::false_type;
+
+  static const bool value = decltype(test<S, T>(0))::value;
+};
+
+template<typename Key, bool Streamable>
+struct streamable_to_string {
+  static std::string impl(const Key& key) {
+    std::stringstream ss;
+    ss << key;
+    return ss.str();
+  }
+};
+
+template<typename Key>
+struct streamable_to_string<Key, false> {
+  static std::string impl(const Key&) {
+    return "";
+  }
+};
+#endif  // TRAITS_H_62B23520_7C8E_11DE_8A39_0800200C9A66

include/yaml-cpp/yaml.h

@@ -0,0 +1,24 @@
+#ifndef YAML_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+#define YAML_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+
+#if defined(_MSC_VER) ||                                            \
+    (defined(__GNUC__) && (__GNUC__ == 3 && __GNUC_MINOR__ >= 4) || \
+     (__GNUC__ >= 4))  // GCC supports "pragma once" correctly since 3.4
+#pragma once
+#endif
+
+#include "yaml-cpp/parser.h"
+#include "yaml-cpp/emitter.h"
+#include "yaml-cpp/emitterstyle.h"
+#include "yaml-cpp/stlemitter.h"
+#include "yaml-cpp/exceptions.h"
+
+#include "yaml-cpp/node/node.h"
+#include "yaml-cpp/node/impl.h"
+#include "yaml-cpp/node/convert.h"
+#include "yaml-cpp/node/iterator.h"
+#include "yaml-cpp/node/detail/impl.h"
+#include "yaml-cpp/node/parse.h"
+#include "yaml-cpp/node/emit.h"
+
+#endif  // YAML_H_62B23520_7C8E_11DE_8A39_0800200C9A66

include/yaml.h

@@ -1,15 +0,0 @@
-#pragma once
-
-#ifndef YAML_H_62B23520_7C8E_11DE_8A39_0800200C9A66
-#define YAML_H_62B23520_7C8E_11DE_8A39_0800200C9A66
-
-
-#include "crt.h"
-#include "parser.h"
-#include "node.h"
-#include "iterator.h"
-#include "emitter.h"
-#include "stlemitter.h"
-#include "exceptions.h"
-
-#endif // YAML_H_62B23520_7C8E_11DE_8A39_0800200C9A66

install.txt

@@ -21,4 +21,4 @@ make install
 
 If you don't want to use CMake, just add all .cpp files to a makefile. yaml-cpp does not need any special build settings, so no 'configure' file is necessary.
 
-(Note: this is pretty tedious. It's sooo much easier to use CMake.)
+(Note: this is pretty tedious. It's sooo much easier to use CMake.)

src/aliascontent.cpp

@@ -1,94 +0,0 @@
-#include "crt.h"
-#include "aliascontent.h"
-
-namespace YAML
-{
-	AliasContent::AliasContent(Content* pNodeContent)
-		: m_pRef(pNodeContent)
-	{
-	}
-
-	Content *AliasContent::Clone() const
-	{
-		return 0; // TODO: how to clone an alias?
-	}
-
-	void AliasContent::Parse(Scanner * /*pScanner*/, const ParserState& /*state*/)
-	{
-	}
-
-	void AliasContent::Write(Emitter&) const
-	{
-		// no content (just an alias)
-	}
-
-	bool AliasContent::GetBegin(std::vector <Node *>::const_iterator& i) const
-	{
-		return m_pRef->GetBegin(i);
-	}
-
-	bool AliasContent::GetBegin(std::map <Node *, Node *, ltnode>::const_iterator& i) const
-	{
-		return m_pRef->GetBegin(i);
-	}
-
-	bool AliasContent::GetEnd(std::vector <Node *>::const_iterator& i) const
-	{
-		return m_pRef->GetEnd(i);
-	}
-
-	bool AliasContent::GetEnd(std::map <Node *, Node *, ltnode>::const_iterator& i) const
-	{
-		return m_pRef->GetEnd(i);
-	}
-
-	Node* AliasContent::GetNode(std::size_t n) const
-	{
-		return m_pRef->GetNode(n);
-	}
-
-	std::size_t AliasContent::GetSize() const
-	{
-		return m_pRef->GetSize();
-	}
-
-	bool AliasContent::IsScalar() const
-	{
-		return m_pRef->IsScalar();
-	}
-
-	bool AliasContent::IsMap() const
-	{
-		return m_pRef->IsMap();
-	}
-
-	bool AliasContent::IsSequence() const
-	{
-		return m_pRef->IsSequence();
-	}
-
-	bool AliasContent::GetScalar(std::string& scalar) const
-	{
-		return m_pRef->GetScalar(scalar);
-	}
-
-	int AliasContent::Compare(Content *pContent)
-	{
-		return m_pRef->Compare(pContent);
-	}
-
-	int AliasContent::Compare(Scalar *pScalar)
-	{
-		return m_pRef->Compare(pScalar);
-	}
-
-	int AliasContent::Compare(Sequence *pSequence)
-	{
-		return m_pRef->Compare(pSequence);
-	}
-
-	int AliasContent::Compare(Map *pMap)
-	{
-		return m_pRef->Compare(pMap);
-	}
-}

src/aliascontent.h

@@ -1,43 +0,0 @@
-#pragma once
-
-#ifndef ALIASCONTENT_H_62B23520_7C8E_11DE_8A39_0800200C9A66
-#define ALIASCONTENT_H_62B23520_7C8E_11DE_8A39_0800200C9A66
-
-
-#include "content.h"
-
-namespace YAML
-{
-	class AliasContent : public Content
-	{
-	public:
-		AliasContent(Content *pNodeContent);
-		
-		virtual Content *Clone() const;
-
-		virtual void Parse(Scanner* pScanner, const ParserState& state);
-		virtual void Write(Emitter&) const;
-
-		virtual bool GetBegin(std::vector <Node *>::const_iterator&) const;
-		virtual bool GetBegin(std::map <Node *, Node *, ltnode>::const_iterator&) const;
-		virtual bool GetEnd(std::vector <Node *>::const_iterator&) const;
-		virtual bool GetEnd(std::map <Node *, Node *, ltnode>::const_iterator&) const;
-		virtual Node* GetNode(std::size_t) const;
-		virtual std::size_t GetSize() const;
-		virtual bool IsScalar() const;
-		virtual bool IsMap() const;
-		virtual bool IsSequence() const;
-
-		virtual bool GetScalar(std::string& s) const;
-
-		virtual int Compare(Content *);
-		virtual int Compare(Scalar *);
-		virtual int Compare(Sequence *);
-		virtual int Compare(Map *);
-
-	private:
-		Content* m_pRef;
-	};
-}
-
-#endif // ALIASCONTENT_H_62B23520_7C8E_11DE_8A39_0800200C9A66

src/binary.cpp

@@ -0,0 +1,100 @@
+#include "yaml-cpp/binary.h"
+
+#include <cctype>
+
+namespace YAML {
+static const char encoding[] =
+    "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
+
+std::string EncodeBase64(const unsigned char *data, std::size_t size) {
+  const char PAD = '=';
+
+  std::string ret;
+  ret.resize(4 * size / 3 + 3);
+  char *out = &ret[0];
+
+  std::size_t chunks = size / 3;
+  std::size_t remainder = size % 3;
+
+  for (std::size_t i = 0; i < chunks; i++, data += 3) {
+    *out++ = encoding[data[0] >> 2];
+    *out++ = encoding[((data[0] & 0x3) << 4) | (data[1] >> 4)];
+    *out++ = encoding[((data[1] & 0xf) << 2) | (data[2] >> 6)];
+    *out++ = encoding[data[2] & 0x3f];
+  }
+
+  switch (remainder) {
+    case 0:
+      break;
+    case 1:
+      *out++ = encoding[data[0] >> 2];
+      *out++ = encoding[((data[0] & 0x3) << 4)];
+      *out++ = PAD;
+      *out++ = PAD;
+      break;
+    case 2:
+      *out++ = encoding[data[0] >> 2];
+      *out++ = encoding[((data[0] & 0x3) << 4) | (data[1] >> 4)];
+      *out++ = encoding[((data[1] & 0xf) << 2)];
+      *out++ = PAD;
+      break;
+  }
+
+  ret.resize(out - &ret[0]);
+  return ret;
+}
+
+static const unsigned char decoding[] = {
+    255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+    255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+    255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 62,  255,
+    255, 255, 63,  52,  53,  54,  55,  56,  57,  58,  59,  60,  61,  255, 255,
+    255, 0,   255, 255, 255, 0,   1,   2,   3,   4,   5,   6,   7,   8,   9,
+    10,  11,  12,  13,  14,  15,  16,  17,  18,  19,  20,  21,  22,  23,  24,
+    25,  255, 255, 255, 255, 255, 255, 26,  27,  28,  29,  30,  31,  32,  33,
+    34,  35,  36,  37,  38,  39,  40,  41,  42,  43,  44,  45,  46,  47,  48,
+    49,  50,  51,  255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+    255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+    255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+    255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+    255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+    255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+    255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+    255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+    255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+    255,
+};
+
+std::vector<unsigned char> DecodeBase64(const std::string &input) {
+  using ret_type = std::vector<unsigned char>;
+  if (input.empty())
+    return ret_type();
+
+  ret_type ret(3 * input.size() / 4 + 1);
+  unsigned char *out = &ret[0];
+
+  unsigned value = 0;
+  for (std::size_t i = 0, cnt = 0; i < input.size(); i++) {
+    if (std::isspace(input[i])) {
+      // skip newlines
+      continue;
+    }
+    unsigned char d = decoding[static_cast<unsigned>(input[i])];
+    if (d == 255)
+      return ret_type();
+
+    value = (value << 6) | d;
+    if (cnt % 4 == 3) {
+      *out++ = value >> 16;
+      if (i > 0 && input[i - 1] != '=')
+        *out++ = value >> 8;
+      if (input[i] != '=')
+        *out++ = value;
+    }
+    ++cnt;
+  }
+
+  ret.resize(out - &ret[0]);
+  return ret;
+}
+}  // namespace YAML

src/collectionstack.h

@@ -0,0 +1,41 @@
+#ifndef COLLECTIONSTACK_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+#define COLLECTIONSTACK_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+
+#if defined(_MSC_VER) ||                                            \
+    (defined(__GNUC__) && (__GNUC__ == 3 && __GNUC_MINOR__ >= 4) || \
+     (__GNUC__ >= 4))  // GCC supports "pragma once" correctly since 3.4
+#pragma once
+#endif
+
+#include <cassert>
+#include <stack>
+
+namespace YAML {
+struct CollectionType {
+  enum value { NoCollection, BlockMap, BlockSeq, FlowMap, FlowSeq, CompactMap };
+};
+
+class CollectionStack {
+ public:
+  CollectionStack() : collectionStack{} {}
+  CollectionType::value GetCurCollectionType() const {
+    if (collectionStack.empty())
+      return CollectionType::NoCollection;
+    return collectionStack.top();
+  }
+
+  void PushCollectionType(CollectionType::value type) {
+    collectionStack.push(type);
+  }
+  void PopCollectionType(CollectionType::value type) {
+    assert(type == GetCurCollectionType());
+    (void)type;
+    collectionStack.pop();
+  }
+
+ private:
+  std::stack<CollectionType::value> collectionStack;
+};
+}  // namespace YAML
+
+#endif  // COLLECTIONSTACK_H_62B23520_7C8E_11DE_8A39_0800200C9A66

src/content.cpp

@@ -1,13 +0,0 @@
-#include "crt.h"
-#include "content.h"
-
-namespace YAML
-{
-	Content::Content()
-	{
-	}
-
-	Content::~Content()
-	{
-	}
-}

src/content.h

@@ -1,57 +0,0 @@
-#pragma once
-
-#ifndef CONTENT_H_62B23520_7C8E_11DE_8A39_0800200C9A66
-#define CONTENT_H_62B23520_7C8E_11DE_8A39_0800200C9A66
-
-
-#include <vector>
-#include <map>
-#include "parserstate.h"
-#include "exceptions.h"
-#include "ltnode.h"
-
-namespace YAML
-{
-	class Scanner;
-	class Parser;
-	class Node;
-	class Scalar;
-	class Sequence;
-	class Map;
-	class Emitter;
-
-	class Content
-	{
-	public:
-		Content();
-		virtual ~Content();
-		
-		virtual Content *Clone() const = 0;
-
-		virtual void Parse(Scanner *pScanner, const ParserState& state) = 0;
-		virtual void Write(Emitter& out) const = 0;
-
-		virtual bool GetBegin(std::vector <Node *>::const_iterator&) const { return false; }
-		virtual bool GetBegin(std::map <Node *, Node *, ltnode>::const_iterator&) const { return false; }
-		virtual bool GetEnd(std::vector <Node *>::const_iterator&) const { return false; }
-		virtual bool GetEnd(std::map <Node *, Node *, ltnode>::const_iterator&) const { return false; }
-		virtual Node *GetNode(std::size_t) const { return 0; }
-		virtual std::size_t GetSize() const { return 0; }
-		virtual bool IsScalar() const { return false; }
-		virtual bool IsMap() const { return false; }
-		virtual bool IsSequence() const { return false; }
-
-		// extraction
-		virtual bool GetScalar(std::string&) const { return false; }
-
-		// ordering
-		virtual int Compare(Content *) { return 0; }
-		virtual int Compare(Scalar *) { return 0; }
-		virtual int Compare(Sequence *) { return 0; }
-		virtual int Compare(Map *) { return 0; }
-
-	protected:
-	};
-}
-
-#endif // CONTENT_H_62B23520_7C8E_11DE_8A39_0800200C9A66

src/contrib/graphbuilder.cpp

@@ -0,0 +1,16 @@
+#include "graphbuilderadapter.h"
+
+#include "yaml-cpp/parser.h"  // IWYU pragma: keep
+
+namespace YAML {
+class GraphBuilderInterface;
+
+void* BuildGraphOfNextDocument(Parser& parser,
+                               GraphBuilderInterface& graphBuilder) {
+  GraphBuilderAdapter eventHandler(graphBuilder);
+  if (parser.HandleNextDocument(eventHandler)) {
+    return eventHandler.RootNode();
+  }
+  return nullptr;
+}
+}  // namespace YAML

src/contrib/graphbuilderadapter.cpp

@@ -0,0 +1,94 @@
+#include "graphbuilderadapter.h"
+#include "yaml-cpp/contrib/graphbuilder.h"
+
+namespace YAML {
+struct Mark;
+
+int GraphBuilderAdapter::ContainerFrame::sequenceMarker;
+
+void GraphBuilderAdapter::OnNull(const Mark &mark, anchor_t anchor) {
+  void *pParent = GetCurrentParent();
+  void *pNode = m_builder.NewNull(mark, pParent);
+  RegisterAnchor(anchor, pNode);
+
+  DispositionNode(pNode);
+}
+
+void GraphBuilderAdapter::OnAlias(const Mark &mark, anchor_t anchor) {
+  void *pReffedNode = m_anchors.Get(anchor);
+  DispositionNode(m_builder.AnchorReference(mark, pReffedNode));
+}
+
+void GraphBuilderAdapter::OnScalar(const Mark &mark, const std::string &tag,
+                                   anchor_t anchor, const std::string &value) {
+  void *pParent = GetCurrentParent();
+  void *pNode = m_builder.NewScalar(mark, tag, pParent, value);
+  RegisterAnchor(anchor, pNode);
+
+  DispositionNode(pNode);
+}
+
+void GraphBuilderAdapter::OnSequenceStart(const Mark &mark,
+                                          const std::string &tag,
+                                          anchor_t anchor,
+                                          EmitterStyle::value /* style */) {
+  void *pNode = m_builder.NewSequence(mark, tag, GetCurrentParent());
+  m_containers.push(ContainerFrame(pNode));
+  RegisterAnchor(anchor, pNode);
+}
+
+void GraphBuilderAdapter::OnSequenceEnd() {
+  void *pSequence = m_containers.top().pContainer;
+  m_containers.pop();
+
+  DispositionNode(pSequence);
+}
+
+void GraphBuilderAdapter::OnMapStart(const Mark &mark, const std::string &tag,
+                                     anchor_t anchor,
+                                     EmitterStyle::value /* style */) {
+  void *pNode = m_builder.NewMap(mark, tag, GetCurrentParent());
+  m_containers.push(ContainerFrame(pNode, m_pKeyNode));
+  m_pKeyNode = nullptr;
+  RegisterAnchor(anchor, pNode);
+}
+
+void GraphBuilderAdapter::OnMapEnd() {
+  void *pMap = m_containers.top().pContainer;
+  m_pKeyNode = m_containers.top().pPrevKeyNode;
+  m_containers.pop();
+  DispositionNode(pMap);
+}
+
+void *GraphBuilderAdapter::GetCurrentParent() const {
+  if (m_containers.empty()) {
+    return nullptr;
+  }
+  return m_containers.top().pContainer;
+}
+
+void GraphBuilderAdapter::RegisterAnchor(anchor_t anchor, void *pNode) {
+  if (anchor) {
+    m_anchors.Register(anchor, pNode);
+  }
+}
+
+void GraphBuilderAdapter::DispositionNode(void *pNode) {
+  if (m_containers.empty()) {
+    m_pRootNode = pNode;
+    return;
+  }
+
+  void *pContainer = m_containers.top().pContainer;
+  if (m_containers.top().isMap()) {
+    if (m_pKeyNode) {
+      m_builder.AssignInMap(pContainer, m_pKeyNode, pNode);
+      m_pKeyNode = nullptr;
+    } else {
+      m_pKeyNode = pNode;
+    }
+  } else {
+    m_builder.AppendToSequence(pContainer, pNode);
+  }
+}
+}  // namespace YAML

src/contrib/graphbuilderadapter.h

@@ -0,0 +1,87 @@
+#ifndef GRAPHBUILDERADAPTER_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+#define GRAPHBUILDERADAPTER_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+
+#if defined(_MSC_VER) ||                                            \
+    (defined(__GNUC__) && (__GNUC__ == 3 && __GNUC_MINOR__ >= 4) || \
+     (__GNUC__ >= 4))  // GCC supports "pragma once" correctly since 3.4
+#pragma once
+#endif
+
+#include <cstdlib>
+#include <map>
+#include <stack>
+
+#include "yaml-cpp/anchor.h"
+#include "yaml-cpp/contrib/anchordict.h"
+#include "yaml-cpp/contrib/graphbuilder.h"
+#include "yaml-cpp/emitterstyle.h"
+#include "yaml-cpp/eventhandler.h"
+
+namespace YAML {
+class GraphBuilderInterface;
+struct Mark;
+}  // namespace YAML
+
+namespace YAML {
+class GraphBuilderAdapter : public EventHandler {
+ public:
+  GraphBuilderAdapter(GraphBuilderInterface& builder)
+      : m_builder(builder),
+        m_containers{},
+        m_anchors{},
+        m_pRootNode(nullptr),
+        m_pKeyNode(nullptr) {}
+  GraphBuilderAdapter(const GraphBuilderAdapter&) = delete;
+  GraphBuilderAdapter(GraphBuilderAdapter&&) = delete;
+  GraphBuilderAdapter& operator=(const GraphBuilderAdapter&) = delete;
+  GraphBuilderAdapter& operator=(GraphBuilderAdapter&&) = delete;
+
+  virtual void OnDocumentStart(const Mark& mark) { (void)mark; }
+  virtual void OnDocumentEnd() {}
+
+  virtual void OnNull(const Mark& mark, anchor_t anchor);
+  virtual void OnAlias(const Mark& mark, anchor_t anchor);
+  virtual void OnScalar(const Mark& mark, const std::string& tag,
+                        anchor_t anchor, const std::string& value);
+
+  virtual void OnSequenceStart(const Mark& mark, const std::string& tag,
+                               anchor_t anchor, EmitterStyle::value style);
+  virtual void OnSequenceEnd();
+
+  virtual void OnMapStart(const Mark& mark, const std::string& tag,
+                          anchor_t anchor, EmitterStyle::value style);
+  virtual void OnMapEnd();
+
+  void* RootNode() const { return m_pRootNode; }
+
+ private:
+  struct ContainerFrame {
+    ContainerFrame(void* pSequence)
+        : pContainer(pSequence), pPrevKeyNode(&sequenceMarker) {}
+    ContainerFrame(void* pMap, void* pPreviousKeyNode)
+        : pContainer(pMap), pPrevKeyNode(pPreviousKeyNode) {}
+
+    void* pContainer;
+    void* pPrevKeyNode;
+
+    bool isMap() const { return pPrevKeyNode != &sequenceMarker; }
+
+   private:
+    static int sequenceMarker;
+  };
+  typedef std::stack<ContainerFrame> ContainerStack;
+  typedef AnchorDict<void*> AnchorMap;
+
+  GraphBuilderInterface& m_builder;
+  ContainerStack m_containers;
+  AnchorMap m_anchors;
+  void* m_pRootNode;
+  void* m_pKeyNode;
+
+  void* GetCurrentParent() const;
+  void RegisterAnchor(anchor_t anchor, void* pNode);
+  void DispositionNode(void* pNode);
+};
+}  // namespace YAML
+
+#endif  // GRAPHBUILDERADAPTER_H_62B23520_7C8E_11DE_8A39_0800200C9A66

src/contrib/yaml-cpp.natvis

@@ -0,0 +1,32 @@
+<?xml version="1.0" encoding="utf-8"?> 
+<!-- MSVC Debugger visualization hints for YAML::Node and YAML::detail::node -->
+<AutoVisualizer xmlns="http://schemas.microsoft.com/vstudio/debugger/natvis/2010">
+  <Type Name="YAML::Node">
+    <DisplayString Condition="!m_isValid">{{invalid}}</DisplayString>
+    <DisplayString Condition="!m_pNode">{{pNode==nullptr}}</DisplayString>
+    <DisplayString>{{ {*m_pNode} }}</DisplayString>
+    <Expand>
+      <Item Condition="m_pNode->m_pRef._Ptr->m_pData._Ptr->m_type==YAML::NodeType::Scalar" Name="scalar">m_pNode->m_pRef._Ptr->m_pData._Ptr->m_scalar</Item>
+      <Item Condition="m_pNode->m_pRef._Ptr->m_pData._Ptr->m_type==YAML::NodeType::Sequence" Name="sequence">m_pNode->m_pRef._Ptr->m_pData._Ptr->m_sequence</Item>
+      <Item Condition="m_pNode->m_pRef._Ptr->m_pData._Ptr->m_type==YAML::NodeType::Map" Name="map">m_pNode->m_pRef._Ptr->m_pData._Ptr->m_map</Item>
+      <Item Name="[details]" >m_pNode->m_pRef._Ptr->m_pData._Ptr</Item>
+    </Expand>
+  </Type>
+
+  <Type Name="YAML::detail::node">
+    <DisplayString Condition="!m_pRef._Ptr">{{node:pRef==nullptr}}</DisplayString>
+    <DisplayString Condition="!m_pRef._Ptr->m_pData._Ptr">{{node:pRef->pData==nullptr}}</DisplayString>
+    <DisplayString Condition="!m_pRef._Ptr->m_pData._Ptr->m_isDefined">{{undefined}}</DisplayString>
+    <DisplayString Condition="m_pRef._Ptr->m_pData._Ptr->m_type==YAML::NodeType::Scalar">{{{m_pRef._Ptr->m_pData._Ptr->m_scalar}}}</DisplayString>
+    <DisplayString Condition="m_pRef._Ptr->m_pData._Ptr->m_type==YAML::NodeType::Map">{{ Map {m_pRef._Ptr->m_pData._Ptr->m_map}}}</DisplayString>
+    <DisplayString Condition="m_pRef._Ptr->m_pData._Ptr->m_type==YAML::NodeType::Sequence">{{ Seq {m_pRef._Ptr->m_pData._Ptr->m_sequence}}}</DisplayString>
+    <DisplayString>{{{m_pRef._Ptr->m_pData._Ptr->m_type}}}</DisplayString>
+    <Expand>
+      <Item Condition="m_pRef._Ptr->m_pData._Ptr->m_type==YAML::NodeType::Scalar" Name="scalar">m_pRef._Ptr->m_pData._Ptr->m_scalar</Item>
+      <Item Condition="m_pRef._Ptr->m_pData._Ptr->m_type==YAML::NodeType::Sequence" Name="sequence">m_pRef._Ptr->m_pData._Ptr->m_sequence</Item>
+      <Item Condition="m_pRef._Ptr->m_pData._Ptr->m_type==YAML::NodeType::Map" Name="map">m_pRef._Ptr->m_pData._Ptr->m_map</Item>
+      <Item Name="[details]" >m_pRef._Ptr->m_pData._Ptr</Item>
+    </Expand>
+  </Type>
+
+</AutoVisualizer>

src/contrib/yaml-cpp.natvis.md

@@ -0,0 +1,9 @@
+# MSVC debugger visualizer for YAML::Node
+
+## How to use
+Add yaml-cpp.natvis to your Visual C++ project like any other source file.  It will be included in the debug information, and improve debugger display on YAML::Node and contained types. 
+
+## Compatibility and Troubleshooting
+
+This has been tested for MSVC 2017. It is expected to be compatible with VS 2015 and VS 2019. If you have any problems, you can open an issue here: https://github.com/peterchen-cp/yaml-cpp-natvis
+

src/conversion.cpp

@@ -1,89 +0,0 @@
-#include "conversion.h"
-#include <algorithm>
-
-////////////////////////////////////////////////////////////////
-// Specializations for converting a string to specific types
-
-namespace
-{
-	// we're not gonna mess with the mess that is all the isupper/etc. functions
-	bool IsLower(char ch) { return 'a' <= ch && ch <= 'z'; }
-	bool IsUpper(char ch) { return 'A' <= ch && ch <= 'Z'; }
-	char ToLower(char ch) { return IsUpper(ch) ? ch + 'a' - 'A' : ch; }
-
-	std::string tolower(const std::string& str)
-	{
-		std::string s(str);
-		std::transform(s.begin(), s.end(), s.begin(), ToLower);
-		return s;
-	}
-
-	template <typename T>
-	bool IsEntirely(const std::string& str, T func)
-	{
-		for(std::size_t i=0;i<str.size();i++)
-			if(!func(str[i]))
-				return false;
-
-		return true;
-	}
-
-	// IsFlexibleCase
-	// . Returns true if 'str' is:
-	//   . UPPERCASE
-	//   . lowercase
-	//   . Capitalized
-	bool IsFlexibleCase(const std::string& str)
-	{
-		if(str.empty())
-			return true;
-
-		if(IsEntirely(str, IsLower))
-			return true;
-
-		bool firstcaps = IsUpper(str[0]);
-		std::string rest = str.substr(1);
-		return firstcaps && (IsEntirely(rest, IsLower) || IsEntirely(rest, IsUpper));
-	}
-}
-
-namespace YAML
-{
-	bool Convert(const std::string& input, bool& b)
-	{
-		// we can't use iostream bool extraction operators as they don't
-		// recognize all possible values in the table below (taken from
-		// http://yaml.org/type/bool.html)
-		static const struct {
-			std::string truename, falsename;
-		} names[] = {
-			{ "y", "n" },
-			{ "yes", "no" },
-			{ "true", "false" },
-			{ "on", "off" },
-		};
-
-		if(!IsFlexibleCase(input))
-			return false;
-
-		for(unsigned i=0;i<sizeof(names)/sizeof(names[0]);i++) {
-			if(names[i].truename == tolower(input)) {
-				b = true;
-				return true;
-			}
-
-			if(names[i].falsename == tolower(input)) {
-				b = false;
-				return true;
-			}
-		}
-
-		return false;
-	}
-	
-	bool Convert(const std::string& input, _Null& /*output*/)
-	{
-		return input.empty() || input == "~" || input == "null" || input == "Null" || input == "NULL";
-	}
-}
-

src/convert.cpp

@@ -0,0 +1,74 @@
+#include <algorithm>
+
+#include "yaml-cpp/node/convert.h"
+
+namespace {
+// we're not gonna mess with the mess that is all the isupper/etc. functions
+bool IsLower(char ch) { return 'a' <= ch && ch <= 'z'; }
+bool IsUpper(char ch) { return 'A' <= ch && ch <= 'Z'; }
+char ToLower(char ch) { return IsUpper(ch) ? ch + 'a' - 'A' : ch; }
+
+std::string tolower(const std::string& str) {
+  std::string s(str);
+  std::transform(s.begin(), s.end(), s.begin(), ToLower);
+  return s;
+}
+
+template <typename T>
+bool IsEntirely(const std::string& str, T func) {
+  return std::all_of(str.begin(), str.end(), [=](char ch) { return func(ch); });
+}
+
+// IsFlexibleCase
+// . Returns true if 'str' is:
+//   . UPPERCASE
+//   . lowercase
+//   . Capitalized
+bool IsFlexibleCase(const std::string& str) {
+  if (str.empty())
+    return true;
+
+  if (IsEntirely(str, IsLower))
+    return true;
+
+  bool firstcaps = IsUpper(str[0]);
+  std::string rest = str.substr(1);
+  return firstcaps && (IsEntirely(rest, IsLower) || IsEntirely(rest, IsUpper));
+}
+}  // namespace
+
+namespace YAML {
+bool convert<bool>::decode(const Node& node, bool& rhs) {
+  if (!node.IsScalar())
+    return false;
+
+  // we can't use iostream bool extraction operators as they don't
+  // recognize all possible values in the table below (taken from
+  // http://yaml.org/type/bool.html)
+  static const struct {
+    std::string truename, falsename;
+  } names[] = {
+      {"y", "n"},
+      {"yes", "no"},
+      {"true", "false"},
+      {"on", "off"},
+  };
+
+  if (!IsFlexibleCase(node.Scalar()))
+    return false;
+
+  for (const auto& name : names) {
+    if (name.truename == tolower(node.Scalar())) {
+      rhs = true;
+      return true;
+    }
+
+    if (name.falsename == tolower(node.Scalar())) {
+      rhs = false;
+      return true;
+    }
+  }
+
+  return false;
+}
+}  // namespace YAML

src/depthguard.cpp

@@ -0,0 +1,9 @@
+#include "yaml-cpp/depthguard.h"
+
+namespace YAML {
+
+DeepRecursion::DeepRecursion(int depth, const Mark& mark_,
+                             const std::string& msg_)
+    : ParserException(mark_, msg_), m_depth(depth) {}
+
+}  // namespace YAML

src/directives.cpp

@@ -0,0 +1,17 @@
+#include "directives.h"
+
+namespace YAML {
+Directives::Directives() : version{true, 1, 2}, tags{} {}
+
+const std::string Directives::TranslateTagHandle(
+    const std::string& handle) const {
+  auto it = tags.find(handle);
+  if (it == tags.end()) {
+    if (handle == "!!")
+      return "tag:yaml.org,2002:";
+    return handle;
+  }
+
+  return it->second;
+}
+}  // namespace YAML

src/directives.h

@@ -0,0 +1,29 @@
+#ifndef DIRECTIVES_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+#define DIRECTIVES_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+
+#if defined(_MSC_VER) ||                                            \
+    (defined(__GNUC__) && (__GNUC__ == 3 && __GNUC_MINOR__ >= 4) || \
+     (__GNUC__ >= 4))  // GCC supports "pragma once" correctly since 3.4
+#pragma once
+#endif
+
+#include <string>
+#include <map>
+
+namespace YAML {
+struct Version {
+  bool isDefault;
+  int major, minor;
+};
+
+struct Directives {
+  Directives();
+
+  const std::string TranslateTagHandle(const std::string& handle) const;
+
+  Version version;
+  std::map<std::string, std::string> tags;
+};
+}
+
+#endif  // DIRECTIVES_H_62B23520_7C8E_11DE_8A39_0800200C9A66

src/emit.cpp

@@ -0,0 +1,25 @@
+#include "yaml-cpp/node/emit.h"
+#include "nodeevents.h"
+#include "yaml-cpp/emitfromevents.h"
+#include "yaml-cpp/emitter.h"
+
+namespace YAML {
+Emitter& operator<<(Emitter& out, const Node& node) {
+  EmitFromEvents emitFromEvents(out);
+  NodeEvents events(node);
+  events.Emit(emitFromEvents);
+  return out;
+}
+
+std::ostream& operator<<(std::ostream& out, const Node& node) {
+  Emitter emitter(out);
+  emitter << node;
+  return out;
+}
+
+std::string Dump(const Node& node) {
+  Emitter emitter;
+  emitter << node;
+  return emitter.c_str();
+}
+}  // namespace YAML

src/emitfromevents.cpp

@@ -0,0 +1,124 @@
+#include <cassert>
+#include <sstream>
+
+#include "yaml-cpp/emitfromevents.h"
+#include "yaml-cpp/emitter.h"
+#include "yaml-cpp/emittermanip.h"
+#include "yaml-cpp/null.h"
+
+namespace YAML {
+struct Mark;
+}  // namespace YAML
+
+namespace {
+std::string ToString(YAML::anchor_t anchor) {
+  std::stringstream stream;
+  stream << anchor;
+  return stream.str();
+}
+}  // namespace
+
+namespace YAML {
+EmitFromEvents::EmitFromEvents(Emitter& emitter)
+    : m_emitter(emitter), m_stateStack{} {}
+
+void EmitFromEvents::OnDocumentStart(const Mark&) {}
+
+void EmitFromEvents::OnDocumentEnd() {}
+
+void EmitFromEvents::OnNull(const Mark&, anchor_t anchor) {
+  BeginNode();
+  EmitProps("", anchor);
+  m_emitter << Null;
+}
+
+void EmitFromEvents::OnAlias(const Mark&, anchor_t anchor) {
+  BeginNode();
+  m_emitter << Alias(ToString(anchor));
+}
+
+void EmitFromEvents::OnScalar(const Mark&, const std::string& tag,
+                              anchor_t anchor, const std::string& value) {
+  BeginNode();
+  EmitProps(tag, anchor);
+  m_emitter << value;
+}
+
+void EmitFromEvents::OnSequenceStart(const Mark&, const std::string& tag,
+                                     anchor_t anchor,
+                                     EmitterStyle::value style) {
+  BeginNode();
+  EmitProps(tag, anchor);
+  switch (style) {
+    case EmitterStyle::Block:
+      m_emitter << Block;
+      break;
+    case EmitterStyle::Flow:
+      m_emitter << Flow;
+      break;
+    default:
+      break;
+  }
+  // Restore the global settings to eliminate the override from node style
+  m_emitter.RestoreGlobalModifiedSettings();
+  m_emitter << BeginSeq;
+  m_stateStack.push(State::WaitingForSequenceEntry);
+}
+
+void EmitFromEvents::OnSequenceEnd() {
+  m_emitter << EndSeq;
+  assert(m_stateStack.top() == State::WaitingForSequenceEntry);
+  m_stateStack.pop();
+}
+
+void EmitFromEvents::OnMapStart(const Mark&, const std::string& tag,
+                                anchor_t anchor, EmitterStyle::value style) {
+  BeginNode();
+  EmitProps(tag, anchor);
+  switch (style) {
+    case EmitterStyle::Block:
+      m_emitter << Block;
+      break;
+    case EmitterStyle::Flow:
+      m_emitter << Flow;
+      break;
+    default:
+      break;
+  }
+  // Restore the global settings to eliminate the override from node style
+  m_emitter.RestoreGlobalModifiedSettings();
+  m_emitter << BeginMap;
+  m_stateStack.push(State::WaitingForKey);
+}
+
+void EmitFromEvents::OnMapEnd() {
+  m_emitter << EndMap;
+  assert(m_stateStack.top() == State::WaitingForKey);
+  m_stateStack.pop();
+}
+
+void EmitFromEvents::BeginNode() {
+  if (m_stateStack.empty())
+    return;
+
+  switch (m_stateStack.top()) {
+    case State::WaitingForKey:
+      m_emitter << Key;
+      m_stateStack.top() = State::WaitingForValue;
+      break;
+    case State::WaitingForValue:
+      m_emitter << Value;
+      m_stateStack.top() = State::WaitingForKey;
+      break;
+    default:
+      break;
+  }
+}
+
+void EmitFromEvents::EmitProps(const std::string& tag, anchor_t anchor) {
+  if (!tag.empty() && tag != "?" && tag != "!")
+    m_emitter << VerbatimTag(tag);
+  if (anchor)
+    m_emitter << Anchor(ToString(anchor));
+}
+}  // namespace YAML

src/emitterstate.cpp

@@ -1,263 +1,400 @@
+#include <limits>
+
 #include "emitterstate.h"
-#include "exceptions.h"
+#include "yaml-cpp/exceptions.h"  // IWYU pragma: keep
 
-namespace YAML
-{
-	EmitterState::EmitterState(): m_isGood(true), m_curIndent(0), m_requiresSeparation(false)
-	{
-		// start up
-		m_stateStack.push(ES_WAITING_FOR_DOC);
-		
-		// set default global manipulators
-		m_strFmt.set(Auto);
-		m_boolFmt.set(TrueFalseBool);
-		m_boolLengthFmt.set(LongBool);
-		m_boolCaseFmt.set(LowerCase);
-		m_intFmt.set(Dec);
-		m_indent.set(2);
-		m_preCommentIndent.set(2);
-		m_postCommentIndent.set(1);
-		m_seqFmt.set(Block);
-		m_mapFmt.set(Block);
-		m_mapKeyFmt.set(Auto);
-	}
-	
-	EmitterState::~EmitterState()
-	{
-		while(!m_groups.empty())
-			_PopGroup();
-	}
-	
-	std::auto_ptr <EmitterState::Group> EmitterState::_PopGroup()
-	{
-		if(m_groups.empty())
-			return std::auto_ptr <Group> (0);
-		
-		std::auto_ptr <Group> pGroup(m_groups.top());
-		m_groups.pop();
-		return pGroup;
-	}
+namespace YAML {
+EmitterState::EmitterState()
+    : m_isGood(true),
+      m_lastError{},
+      // default global manipulators
+      m_charset(EmitNonAscii),
+      m_strFmt(Auto),
+      m_boolFmt(TrueFalseBool),
+      m_boolLengthFmt(LongBool),
+      m_boolCaseFmt(LowerCase),
+      m_nullFmt(TildeNull),
+      m_intFmt(Dec),
+      m_indent(2),
+      m_preCommentIndent(2),
+      m_postCommentIndent(1),
+      m_seqFmt(Block),
+      m_mapFmt(Block),
+      m_mapKeyFmt(Auto),
+      m_floatPrecision(std::numeric_limits<float>::max_digits10),
+      m_doublePrecision(std::numeric_limits<double>::max_digits10),
+      //
+      m_modifiedSettings{},
+      m_globalModifiedSettings{},
+      m_groups{},
+      m_curIndent(0),
+      m_hasAnchor(false),
+      m_hasAlias(false),
+      m_hasTag(false),
+      m_hasNonContent(false),
+      m_docCount(0) {}
 
-	// SetLocalValue
-	// . We blindly tries to set all possible formatters to this value
-	// . Only the ones that make sense will be accepted
-	void EmitterState::SetLocalValue(EMITTER_MANIP value)
-	{
-		SetStringFormat(value, LOCAL);
-		SetBoolFormat(value, LOCAL);
-		SetBoolCaseFormat(value, LOCAL);
-		SetBoolLengthFormat(value, LOCAL);
-		SetIntFormat(value, LOCAL);
-		SetFlowType(GT_SEQ, value, LOCAL);
-		SetFlowType(GT_MAP, value, LOCAL);
-		SetMapKeyFormat(value, LOCAL);
-	}
-	
-	void EmitterState::BeginGroup(GROUP_TYPE type)
-	{
-		unsigned lastIndent = (m_groups.empty() ? 0 : m_groups.top()->indent);
-		m_curIndent += lastIndent;
-		
-		std::auto_ptr <Group> pGroup(new Group(type));
-		
-		// transfer settings (which last until this group is done)
-		pGroup->modifiedSettings = m_modifiedSettings;
+EmitterState::~EmitterState() = default;
 
-		// set up group
-		pGroup->flow = GetFlowType(type);
-		pGroup->indent = GetIndent();
-		pGroup->usingLongKey = (GetMapKeyFormat() == LongKey ? true : false);
-
-		m_groups.push(pGroup.release());
-	}
-	
-	void EmitterState::EndGroup(GROUP_TYPE type)
-	{
-		if(m_groups.empty())
-			return SetError(ErrorMsg::UNMATCHED_GROUP_TAG);
-		
-		// get rid of the current group
-		{
-			std::auto_ptr <Group> pFinishedGroup = _PopGroup();
-			if(pFinishedGroup->type != type)
-				return SetError(ErrorMsg::UNMATCHED_GROUP_TAG);
-		}
-
-		// reset old settings
-		unsigned lastIndent = (m_groups.empty() ? 0 : m_groups.top()->indent);
-		assert(m_curIndent >= lastIndent);
-		m_curIndent -= lastIndent;
-		
-		// some global settings that we changed may have been overridden
-		// by a local setting we just popped, so we need to restore them
-		m_globalModifiedSettings.restore();
-	}
-		
-	GROUP_TYPE EmitterState::GetCurGroupType() const
-	{
-		if(m_groups.empty())
-			return GT_NONE;
-		
-		return m_groups.top()->type;
-	}
-	
-	FLOW_TYPE EmitterState::GetCurGroupFlowType() const
-	{
-		if(m_groups.empty())
-			return FT_NONE;
-		
-		return (m_groups.top()->flow == Flow ? FT_FLOW : FT_BLOCK);
-	}
-	
-	bool EmitterState::CurrentlyInLongKey()
-	{
-		if(m_groups.empty())
-			return false;
-		return m_groups.top()->usingLongKey;
-	}
-	
-	void EmitterState::StartLongKey()
-	{
-		if(!m_groups.empty())
-			m_groups.top()->usingLongKey = true;
-	}
-	
-	void EmitterState::StartSimpleKey()
-	{
-		if(!m_groups.empty())
-			m_groups.top()->usingLongKey = false;
-	}
-
-	void EmitterState::ClearModifiedSettings()
-	{
-		m_modifiedSettings.clear();
-	}
-	
-	bool EmitterState::SetStringFormat(EMITTER_MANIP value, FMT_SCOPE scope)
-	{
-		switch(value) {
-			case Auto:
-			case SingleQuoted:
-			case DoubleQuoted:
-			case Literal:
-				_Set(m_strFmt, value, scope);
-				return true;
-			default:
-				return false;
-		}
-	}
-	
-	bool EmitterState::SetBoolFormat(EMITTER_MANIP value, FMT_SCOPE scope)
-	{
-		switch(value) {
-			case OnOffBool:
-			case TrueFalseBool:
-			case YesNoBool:
-				_Set(m_boolFmt, value, scope);
-				return true;
-			default:
-				return false;
-		}
-	}
-
-	bool EmitterState::SetBoolLengthFormat(EMITTER_MANIP value, FMT_SCOPE scope)
-	{
-		switch(value) {
-			case LongBool:
-			case ShortBool:
-				_Set(m_boolLengthFmt, value, scope);
-				return true;
-			default:
-				return false;
-		}
-	}
-
-	bool EmitterState::SetBoolCaseFormat(EMITTER_MANIP value, FMT_SCOPE scope)
-	{
-		switch(value) {
-			case UpperCase:
-			case LowerCase:
-			case CamelCase:
-				_Set(m_boolCaseFmt, value, scope);
-				return true;
-			default:
-				return false;
-		}
-	}
-
-	bool EmitterState::SetIntFormat(EMITTER_MANIP value, FMT_SCOPE scope)
-	{
-		switch(value) {
-			case Dec:
-			case Hex:
-			case Oct:
-				_Set(m_intFmt, value, scope);
-				return true;
-			default:
-				return false;
-		}
-	}
-
-	bool EmitterState::SetIndent(unsigned value, FMT_SCOPE scope)
-	{
-		if(value == 0)
-			return false;
-		
-		_Set(m_indent, value, scope);
-		return true;
-	}
-
-	bool EmitterState::SetPreCommentIndent(unsigned value, FMT_SCOPE scope)
-	{
-		if(value == 0)
-			return false;
-		
-		_Set(m_preCommentIndent, value, scope);
-		return true;
-	}
-	
-	bool EmitterState::SetPostCommentIndent(unsigned value, FMT_SCOPE scope)
-	{
-		if(value == 0)
-			return false;
-		
-		_Set(m_postCommentIndent, value, scope);
-		return true;
-	}
-
-	bool EmitterState::SetFlowType(GROUP_TYPE groupType, EMITTER_MANIP value, FMT_SCOPE scope)
-	{
-		switch(value) {
-			case Block:
-			case Flow:
-				_Set(groupType == GT_SEQ ? m_seqFmt : m_mapFmt, value, scope);
-				return true;
-			default:
-				return false;
-		}
-	}
-
-	EMITTER_MANIP EmitterState::GetFlowType(GROUP_TYPE groupType) const
-	{
-		// force flow style if we're currently in a flow
-		FLOW_TYPE flowType = GetCurGroupFlowType();
-		if(flowType == FT_FLOW)
-			return Flow;
-		
-		// otherwise, go with what's asked of use
-		return (groupType == GT_SEQ ? m_seqFmt.get() : m_mapFmt.get());
-	}
-	
-	bool EmitterState::SetMapKeyFormat(EMITTER_MANIP value, FMT_SCOPE scope)
-	{
-		switch(value) {
-			case Auto:
-			case LongKey:
-				_Set(m_mapKeyFmt, value, scope);
-				return true;
-			default:
-				return false;
-		}
-	}
+// SetLocalValue
+// . We blindly tries to set all possible formatters to this value
+// . Only the ones that make sense will be accepted
+void EmitterState::SetLocalValue(EMITTER_MANIP value) {
+  SetOutputCharset(value, FmtScope::Local);
+  SetStringFormat(value, FmtScope::Local);
+  SetBoolFormat(value, FmtScope::Local);
+  SetBoolCaseFormat(value, FmtScope::Local);
+  SetBoolLengthFormat(value, FmtScope::Local);
+  SetNullFormat(value, FmtScope::Local);
+  SetIntFormat(value, FmtScope::Local);
+  SetFlowType(GroupType::Seq, value, FmtScope::Local);
+  SetFlowType(GroupType::Map, value, FmtScope::Local);
+  SetMapKeyFormat(value, FmtScope::Local);
 }
 
+void EmitterState::SetAnchor() { m_hasAnchor = true; }
+
+void EmitterState::SetAlias() { m_hasAlias = true; }
+
+void EmitterState::SetTag() { m_hasTag = true; }
+
+void EmitterState::SetNonContent() { m_hasNonContent = true; }
+
+void EmitterState::SetLongKey() {
+  assert(!m_groups.empty());
+  if (m_groups.empty()) {
+    return;
+  }
+
+  assert(m_groups.back()->type == GroupType::Map);
+  m_groups.back()->longKey = true;
+}
+
+void EmitterState::ForceFlow() {
+  assert(!m_groups.empty());
+  if (m_groups.empty()) {
+    return;
+  }
+
+  m_groups.back()->flowType = FlowType::Flow;
+}
+
+void EmitterState::StartedNode() {
+  if (m_groups.empty()) {
+    m_docCount++;
+  } else {
+    m_groups.back()->childCount++;
+    if (m_groups.back()->childCount % 2 == 0) {
+      m_groups.back()->longKey = false;
+    }
+  }
+
+  m_hasAnchor = false;
+  m_hasAlias = false;
+  m_hasTag = false;
+  m_hasNonContent = false;
+}
+
+EmitterNodeType::value EmitterState::NextGroupType(
+    GroupType::value type) const {
+  if (type == GroupType::Seq) {
+    if (GetFlowType(type) == Block)
+      return EmitterNodeType::BlockSeq;
+    return EmitterNodeType::FlowSeq;
+  }
+
+  if (GetFlowType(type) == Block)
+    return EmitterNodeType::BlockMap;
+  return EmitterNodeType::FlowMap;
+
+  // can't happen
+  assert(false);
+  return EmitterNodeType::NoType;
+}
+
+void EmitterState::StartedDoc() {
+  m_hasAnchor = false;
+  m_hasTag = false;
+  m_hasNonContent = false;
+}
+
+void EmitterState::EndedDoc() {
+  m_hasAnchor = false;
+  m_hasTag = false;
+  m_hasNonContent = false;
+}
+
+void EmitterState::StartedScalar() {
+  StartedNode();
+  ClearModifiedSettings();
+}
+
+void EmitterState::StartedGroup(GroupType::value type) {
+  StartedNode();
+
+  const std::size_t lastGroupIndent =
+      (m_groups.empty() ? 0 : m_groups.back()->indent);
+  m_curIndent += lastGroupIndent;
+
+  // TODO: Create move constructors for settings types to simplify transfer
+  std::unique_ptr<Group> pGroup(new Group(type));
+
+  // transfer settings (which last until this group is done)
+  //
+  // NB: if pGroup->modifiedSettings == m_modifiedSettings,
+  // m_modifiedSettings is not changed!
+  pGroup->modifiedSettings = std::move(m_modifiedSettings);
+
+  // set up group
+  if (GetFlowType(type) == Block) {
+    pGroup->flowType = FlowType::Block;
+  } else {
+    pGroup->flowType = FlowType::Flow;
+  }
+  pGroup->indent = GetIndent();
+
+  m_groups.push_back(std::move(pGroup));
+}
+
+void EmitterState::EndedGroup(GroupType::value type) {
+  if (m_groups.empty()) {
+    if (type == GroupType::Seq) {
+      return SetError(ErrorMsg::UNEXPECTED_END_SEQ);
+    }
+    return SetError(ErrorMsg::UNEXPECTED_END_MAP);
+  }
+
+  if (m_hasTag) {
+    SetError(ErrorMsg::INVALID_TAG);
+  }
+  if (m_hasAnchor) {
+    SetError(ErrorMsg::INVALID_ANCHOR);
+  }
+
+  // get rid of the current group
+  {
+    std::unique_ptr<Group> pFinishedGroup = std::move(m_groups.back());
+    m_groups.pop_back();
+    if (pFinishedGroup->type != type) {
+      return SetError(ErrorMsg::UNMATCHED_GROUP_TAG);
+    }
+  }
+
+  // reset old settings
+  std::size_t lastIndent = (m_groups.empty() ? 0 : m_groups.back()->indent);
+  assert(m_curIndent >= lastIndent);
+  m_curIndent -= lastIndent;
+
+  // some global settings that we changed may have been overridden
+  // by a local setting we just popped, so we need to restore them
+  m_globalModifiedSettings.restore();
+
+  ClearModifiedSettings();
+  m_hasAnchor = false;
+  m_hasTag = false;
+  m_hasNonContent = false;
+}
+
+EmitterNodeType::value EmitterState::CurGroupNodeType() const {
+  if (m_groups.empty()) {
+    return EmitterNodeType::NoType;
+  }
+
+  return m_groups.back()->NodeType();
+}
+
+GroupType::value EmitterState::CurGroupType() const {
+  return m_groups.empty() ? GroupType::NoType : m_groups.back()->type;
+}
+
+FlowType::value EmitterState::CurGroupFlowType() const {
+  return m_groups.empty() ? FlowType::NoType : m_groups.back()->flowType;
+}
+
+std::size_t EmitterState::CurGroupIndent() const {
+  return m_groups.empty() ? 0 : m_groups.back()->indent;
+}
+
+std::size_t EmitterState::CurGroupChildCount() const {
+  return m_groups.empty() ? m_docCount : m_groups.back()->childCount;
+}
+
+bool EmitterState::CurGroupLongKey() const {
+  return m_groups.empty() ? false : m_groups.back()->longKey;
+}
+
+std::size_t EmitterState::LastIndent() const {
+  if (m_groups.size() <= 1) {
+    return 0;
+  }
+
+  return m_curIndent - m_groups[m_groups.size() - 2]->indent;
+}
+
+void EmitterState::ClearModifiedSettings() { m_modifiedSettings.clear(); }
+
+void EmitterState::RestoreGlobalModifiedSettings() {
+  m_globalModifiedSettings.restore();
+}
+
+bool EmitterState::SetOutputCharset(EMITTER_MANIP value,
+                                    FmtScope::value scope) {
+  switch (value) {
+    case EmitNonAscii:
+    case EscapeNonAscii:
+    case EscapeAsJson:
+      _Set(m_charset, value, scope);
+      return true;
+    default:
+      return false;
+  }
+}
+
+bool EmitterState::SetStringFormat(EMITTER_MANIP value, FmtScope::value scope) {
+  switch (value) {
+    case Auto:
+    case SingleQuoted:
+    case DoubleQuoted:
+    case Literal:
+      _Set(m_strFmt, value, scope);
+      return true;
+    default:
+      return false;
+  }
+}
+
+bool EmitterState::SetBoolFormat(EMITTER_MANIP value, FmtScope::value scope) {
+  switch (value) {
+    case OnOffBool:
+    case TrueFalseBool:
+    case YesNoBool:
+      _Set(m_boolFmt, value, scope);
+      return true;
+    default:
+      return false;
+  }
+}
+
+bool EmitterState::SetBoolLengthFormat(EMITTER_MANIP value,
+                                       FmtScope::value scope) {
+  switch (value) {
+    case LongBool:
+    case ShortBool:
+      _Set(m_boolLengthFmt, value, scope);
+      return true;
+    default:
+      return false;
+  }
+}
+
+bool EmitterState::SetBoolCaseFormat(EMITTER_MANIP value,
+                                     FmtScope::value scope) {
+  switch (value) {
+    case UpperCase:
+    case LowerCase:
+    case CamelCase:
+      _Set(m_boolCaseFmt, value, scope);
+      return true;
+    default:
+      return false;
+  }
+}
+
+bool EmitterState::SetNullFormat(EMITTER_MANIP value, FmtScope::value scope) {
+  switch (value) {
+    case LowerNull:
+    case UpperNull:
+    case CamelNull:
+    case TildeNull:
+      _Set(m_nullFmt, value, scope);
+      return true;
+    default:
+      return false;
+  }
+}
+
+bool EmitterState::SetIntFormat(EMITTER_MANIP value, FmtScope::value scope) {
+  switch (value) {
+    case Dec:
+    case Hex:
+    case Oct:
+      _Set(m_intFmt, value, scope);
+      return true;
+    default:
+      return false;
+  }
+}
+
+bool EmitterState::SetIndent(std::size_t value, FmtScope::value scope) {
+  if (value <= 1)
+    return false;
+
+  _Set(m_indent, value, scope);
+  return true;
+}
+
+bool EmitterState::SetPreCommentIndent(std::size_t value,
+                                       FmtScope::value scope) {
+  if (value == 0)
+    return false;
+
+  _Set(m_preCommentIndent, value, scope);
+  return true;
+}
+
+bool EmitterState::SetPostCommentIndent(std::size_t value,
+                                        FmtScope::value scope) {
+  if (value == 0)
+    return false;
+
+  _Set(m_postCommentIndent, value, scope);
+  return true;
+}
+
+bool EmitterState::SetFlowType(GroupType::value groupType, EMITTER_MANIP value,
+                               FmtScope::value scope) {
+  switch (value) {
+    case Block:
+    case Flow:
+      _Set(groupType == GroupType::Seq ? m_seqFmt : m_mapFmt, value, scope);
+      return true;
+    default:
+      return false;
+  }
+}
+
+EMITTER_MANIP EmitterState::GetFlowType(GroupType::value groupType) const {
+  // force flow style if we're currently in a flow
+  if (CurGroupFlowType() == FlowType::Flow)
+    return Flow;
+
+  // otherwise, go with what's asked of us
+  return (groupType == GroupType::Seq ? m_seqFmt.get() : m_mapFmt.get());
+}
+
+bool EmitterState::SetMapKeyFormat(EMITTER_MANIP value, FmtScope::value scope) {
+  switch (value) {
+    case Auto:
+    case LongKey:
+      _Set(m_mapKeyFmt, value, scope);
+      return true;
+    default:
+      return false;
+  }
+}
+
+bool EmitterState::SetFloatPrecision(std::size_t value, FmtScope::value scope) {
+  if (value > std::numeric_limits<float>::max_digits10)
+    return false;
+  _Set(m_floatPrecision, value, scope);
+  return true;
+}
+
+bool EmitterState::SetDoublePrecision(std::size_t value,
+                                      FmtScope::value scope) {
+  if (value > std::numeric_limits<double>::max_digits10)
+    return false;
+  _Set(m_doublePrecision, value, scope);
+  return true;
+}
+}  // namespace YAML

src/emitterstate.h

@@ -1,201 +1,216 @@
-#pragma once
-
 #ifndef EMITTERSTATE_H_62B23520_7C8E_11DE_8A39_0800200C9A66
 #define EMITTERSTATE_H_62B23520_7C8E_11DE_8A39_0800200C9A66
 
+#if defined(_MSC_VER) ||                                            \
+    (defined(__GNUC__) && (__GNUC__ == 3 && __GNUC_MINOR__ >= 4) || \
+     (__GNUC__ >= 4))  // GCC supports "pragma once" correctly since 3.4
+#pragma once
+#endif
 
 #include "setting.h"
-#include "emittermanip.h"
+#include "yaml-cpp/emitterdef.h"
+#include "yaml-cpp/emittermanip.h"
+
 #include <cassert>
-#include <vector>
-#include <stack>
 #include <memory>
+#include <stack>
+#include <stdexcept>
+#include <vector>
 
-namespace YAML
-{
-	enum FMT_SCOPE {
-		LOCAL,
-		GLOBAL
-	};
-	
-	enum GROUP_TYPE {
-		GT_NONE,
-		GT_SEQ,
-		GT_MAP
-	};
-	
-	enum FLOW_TYPE {
-		FT_NONE,
-		FT_FLOW,
-		FT_BLOCK
-	};
-	
-	enum NODE_STATE {
-		NS_START,
-		NS_READY_FOR_ATOM,
-		NS_END
-	};
-	
-	enum EMITTER_STATE {
-		ES_WAITING_FOR_DOC,
-		ES_WRITING_DOC,
-		ES_DONE_WITH_DOC,
-		
-		// block seq
-		ES_WAITING_FOR_BLOCK_SEQ_ENTRY,
-		ES_WRITING_BLOCK_SEQ_ENTRY,
-		ES_DONE_WITH_BLOCK_SEQ_ENTRY,
-		
-		// flow seq
-		ES_WAITING_FOR_FLOW_SEQ_ENTRY,
-		ES_WRITING_FLOW_SEQ_ENTRY,
-		ES_DONE_WITH_FLOW_SEQ_ENTRY,
-		
-		// block map
-		ES_WAITING_FOR_BLOCK_MAP_ENTRY,
-		ES_WAITING_FOR_BLOCK_MAP_KEY,
-		ES_WRITING_BLOCK_MAP_KEY,
-		ES_DONE_WITH_BLOCK_MAP_KEY,
-		ES_WAITING_FOR_BLOCK_MAP_VALUE,
-		ES_WRITING_BLOCK_MAP_VALUE,
-		ES_DONE_WITH_BLOCK_MAP_VALUE,
-		
-		// flow map
-		ES_WAITING_FOR_FLOW_MAP_ENTRY,
-		ES_WAITING_FOR_FLOW_MAP_KEY,
-		ES_WRITING_FLOW_MAP_KEY,
-		ES_DONE_WITH_FLOW_MAP_KEY,
-		ES_WAITING_FOR_FLOW_MAP_VALUE,
-		ES_WRITING_FLOW_MAP_VALUE,
-		ES_DONE_WITH_FLOW_MAP_VALUE
-	};
-	
-	class EmitterState
-	{
-	public:
-		EmitterState();
-		~EmitterState();
-		
-		// basic state checking
-		bool good() const { return m_isGood; }
-		const std::string GetLastError() const { return m_lastError; }
-		void SetError(const std::string& error) { m_isGood = false; m_lastError = error; }
-		
-		// main state of the machine
-		EMITTER_STATE GetCurState() const { return m_stateStack.top(); }
-		void SwitchState(EMITTER_STATE state) { PopState(); PushState(state); }
-		void PushState(EMITTER_STATE state) { m_stateStack.push(state); }
-		void PopState() { m_stateStack.pop(); }
-		
-		void SetLocalValue(EMITTER_MANIP value);
-		
-		// group handling
-		void BeginGroup(GROUP_TYPE type);
-		void EndGroup(GROUP_TYPE type);
-		
-		GROUP_TYPE GetCurGroupType() const;
-		FLOW_TYPE GetCurGroupFlowType() const;
-		int GetCurIndent() const { return m_curIndent; }
-		
-		bool CurrentlyInLongKey();
-		void StartLongKey();
-		void StartSimpleKey();
+namespace YAML {
+struct FmtScope {
+  enum value { Local, Global };
+};
+struct GroupType {
+  enum value { NoType, Seq, Map };
+};
+struct FlowType {
+  enum value { NoType, Flow, Block };
+};
 
-		bool RequiresSeparation() const { return m_requiresSeparation; }
-		void RequireSeparation() { m_requiresSeparation = true; }
-		void UnsetSeparation() { m_requiresSeparation = false; }
+class EmitterState {
+ public:
+  EmitterState();
+  ~EmitterState();
 
-		void ClearModifiedSettings();
+  // basic state checking
+  bool good() const { return m_isGood; }
+  const std::string GetLastError() const { return m_lastError; }
+  void SetError(const std::string& error) {
+    m_isGood = false;
+    m_lastError = error;
+  }
 
-		// formatters
-		bool SetStringFormat(EMITTER_MANIP value, FMT_SCOPE scope);
-		EMITTER_MANIP GetStringFormat() const { return m_strFmt.get(); }
-		
-		bool SetBoolFormat(EMITTER_MANIP value, FMT_SCOPE scope);
-		EMITTER_MANIP GetBoolFormat() const { return m_boolFmt.get(); }
+  // node handling
+  void SetAnchor();
+  void SetAlias();
+  void SetTag();
+  void SetNonContent();
+  void SetLongKey();
+  void ForceFlow();
+  void StartedDoc();
+  void EndedDoc();
+  void StartedScalar();
+  void StartedGroup(GroupType::value type);
+  void EndedGroup(GroupType::value type);
 
-		bool SetBoolLengthFormat(EMITTER_MANIP value, FMT_SCOPE scope);
-		EMITTER_MANIP GetBoolLengthFormat() const { return m_boolLengthFmt.get(); }
+  EmitterNodeType::value NextGroupType(GroupType::value type) const;
+  EmitterNodeType::value CurGroupNodeType() const;
 
-		bool SetBoolCaseFormat(EMITTER_MANIP value, FMT_SCOPE scope);
-		EMITTER_MANIP GetBoolCaseFormat() const { return m_boolCaseFmt.get(); }
+  GroupType::value CurGroupType() const;
+  FlowType::value CurGroupFlowType() const;
+  std::size_t CurGroupIndent() const;
+  std::size_t CurGroupChildCount() const;
+  bool CurGroupLongKey() const;
 
-		bool SetIntFormat(EMITTER_MANIP value, FMT_SCOPE scope);
-		EMITTER_MANIP GetIntFormat() const { return m_intFmt.get(); }
+  std::size_t LastIndent() const;
+  std::size_t CurIndent() const { return m_curIndent; }
+  bool HasAnchor() const { return m_hasAnchor; }
+  bool HasAlias() const { return m_hasAlias; }
+  bool HasTag() const { return m_hasTag; }
+  bool HasBegunNode() const {
+    return m_hasAnchor || m_hasTag || m_hasNonContent;
+  }
+  bool HasBegunContent() const { return m_hasAnchor || m_hasTag; }
 
-		bool SetIndent(unsigned value, FMT_SCOPE scope);
-		int GetIndent() const { return m_indent.get(); }
-		
-		bool SetPreCommentIndent(unsigned value, FMT_SCOPE scope);
-		int GetPreCommentIndent() const { return m_preCommentIndent.get(); }
-		bool SetPostCommentIndent(unsigned value, FMT_SCOPE scope);
-		int GetPostCommentIndent() const { return m_postCommentIndent.get(); }
-		
-		bool SetFlowType(GROUP_TYPE groupType, EMITTER_MANIP value, FMT_SCOPE scope);
-		EMITTER_MANIP GetFlowType(GROUP_TYPE groupType) const;
-		
-		bool SetMapKeyFormat(EMITTER_MANIP value, FMT_SCOPE scope);
-		EMITTER_MANIP GetMapKeyFormat() const { return m_mapKeyFmt.get(); }
-		
-	private:
-		template <typename T>
-		void _Set(Setting<T>& fmt, T value, FMT_SCOPE scope);
-		
-	private:
-		// basic state ok?
-		bool m_isGood;
-		std::string m_lastError;
-		
-		// other state
-		std::stack <EMITTER_STATE> m_stateStack;
-		
-		Setting <EMITTER_MANIP> m_strFmt;
-		Setting <EMITTER_MANIP> m_boolFmt;
-		Setting <EMITTER_MANIP> m_boolLengthFmt;
-		Setting <EMITTER_MANIP> m_boolCaseFmt;
-		Setting <EMITTER_MANIP> m_intFmt;
-		Setting <unsigned> m_indent;
-		Setting <unsigned> m_preCommentIndent, m_postCommentIndent;
-		Setting <EMITTER_MANIP> m_seqFmt;
-		Setting <EMITTER_MANIP> m_mapFmt;
-		Setting <EMITTER_MANIP> m_mapKeyFmt;
-		
-		SettingChanges m_modifiedSettings;
-		SettingChanges m_globalModifiedSettings;
-		
-		struct Group {
-			Group(GROUP_TYPE type_): type(type_), usingLongKey(false), indent(0) {}
-			
-			GROUP_TYPE type;
-			EMITTER_MANIP flow;
-			bool usingLongKey;
-			int indent;
-			
-			SettingChanges modifiedSettings;
-		};
-		
-		std::auto_ptr <Group> _PopGroup();
-		
-		std::stack <Group *> m_groups;
-		unsigned m_curIndent;
-		bool m_requiresSeparation;
-	};
+  void ClearModifiedSettings();
+  void RestoreGlobalModifiedSettings();
 
-	template <typename T>
-	void EmitterState::_Set(Setting<T>& fmt, T value, FMT_SCOPE scope) {
-		switch(scope) {
-			case LOCAL:
-				m_modifiedSettings.push(fmt.set(value));
-				break;
-			case GLOBAL:
-				fmt.set(value);
-				m_globalModifiedSettings.push(fmt.set(value));  // this pushes an identity set, so when we restore,
-				                                                // it restores to the value here, and not the previous one
-				break;
-			default:
-				assert(false);
-		}
-	}
+  // formatters
+  void SetLocalValue(EMITTER_MANIP value);
+
+  bool SetOutputCharset(EMITTER_MANIP value, FmtScope::value scope);
+  EMITTER_MANIP GetOutputCharset() const { return m_charset.get(); }
+
+  bool SetStringFormat(EMITTER_MANIP value, FmtScope::value scope);
+  EMITTER_MANIP GetStringFormat() const { return m_strFmt.get(); }
+
+  bool SetBoolFormat(EMITTER_MANIP value, FmtScope::value scope);
+  EMITTER_MANIP GetBoolFormat() const { return m_boolFmt.get(); }
+
+  bool SetBoolLengthFormat(EMITTER_MANIP value, FmtScope::value scope);
+  EMITTER_MANIP GetBoolLengthFormat() const { return m_boolLengthFmt.get(); }
+
+  bool SetBoolCaseFormat(EMITTER_MANIP value, FmtScope::value scope);
+  EMITTER_MANIP GetBoolCaseFormat() const { return m_boolCaseFmt.get(); }
+
+  bool SetNullFormat(EMITTER_MANIP value, FmtScope::value scope);
+  EMITTER_MANIP GetNullFormat() const { return m_nullFmt.get(); }
+
+  bool SetIntFormat(EMITTER_MANIP value, FmtScope::value scope);
+  EMITTER_MANIP GetIntFormat() const { return m_intFmt.get(); }
+
+  bool SetIndent(std::size_t value, FmtScope::value scope);
+  std::size_t GetIndent() const { return m_indent.get(); }
+
+  bool SetPreCommentIndent(std::size_t value, FmtScope::value scope);
+  std::size_t GetPreCommentIndent() const { return m_preCommentIndent.get(); }
+  bool SetPostCommentIndent(std::size_t value, FmtScope::value scope);
+  std::size_t GetPostCommentIndent() const { return m_postCommentIndent.get(); }
+
+  bool SetFlowType(GroupType::value groupType, EMITTER_MANIP value,
+                   FmtScope::value scope);
+  EMITTER_MANIP GetFlowType(GroupType::value groupType) const;
+
+  bool SetMapKeyFormat(EMITTER_MANIP value, FmtScope::value scope);
+  EMITTER_MANIP GetMapKeyFormat() const { return m_mapKeyFmt.get(); }
+
+  bool SetFloatPrecision(std::size_t value, FmtScope::value scope);
+  std::size_t GetFloatPrecision() const { return m_floatPrecision.get(); }
+  bool SetDoublePrecision(std::size_t value, FmtScope::value scope);
+  std::size_t GetDoublePrecision() const { return m_doublePrecision.get(); }
+
+ private:
+  template <typename T>
+  void _Set(Setting<T>& fmt, T value, FmtScope::value scope);
+
+  void StartedNode();
+
+ private:
+  // basic state ok?
+  bool m_isGood;
+  std::string m_lastError;
+
+  // other state
+  Setting<EMITTER_MANIP> m_charset;
+  Setting<EMITTER_MANIP> m_strFmt;
+  Setting<EMITTER_MANIP> m_boolFmt;
+  Setting<EMITTER_MANIP> m_boolLengthFmt;
+  Setting<EMITTER_MANIP> m_boolCaseFmt;
+  Setting<EMITTER_MANIP> m_nullFmt;
+  Setting<EMITTER_MANIP> m_intFmt;
+  Setting<std::size_t> m_indent;
+  Setting<std::size_t> m_preCommentIndent, m_postCommentIndent;
+  Setting<EMITTER_MANIP> m_seqFmt;
+  Setting<EMITTER_MANIP> m_mapFmt;
+  Setting<EMITTER_MANIP> m_mapKeyFmt;
+  Setting<std::size_t> m_floatPrecision;
+  Setting<std::size_t> m_doublePrecision;
+
+  SettingChanges m_modifiedSettings;
+  SettingChanges m_globalModifiedSettings;
+
+  struct Group {
+    explicit Group(GroupType::value type_)
+        : type(type_),
+          flowType{},
+          indent(0),
+          childCount(0),
+          longKey(false),
+          modifiedSettings{} {}
+
+    GroupType::value type;
+    FlowType::value flowType;
+    std::size_t indent;
+    std::size_t childCount;
+    bool longKey;
+
+    SettingChanges modifiedSettings;
+
+    EmitterNodeType::value NodeType() const {
+      if (type == GroupType::Seq) {
+        if (flowType == FlowType::Flow)
+          return EmitterNodeType::FlowSeq;
+        else
+          return EmitterNodeType::BlockSeq;
+      } else {
+        if (flowType == FlowType::Flow)
+          return EmitterNodeType::FlowMap;
+        else
+          return EmitterNodeType::BlockMap;
+      }
+
+      // can't get here
+      assert(false);
+      return EmitterNodeType::NoType;
+    }
+  };
+
+  std::vector<std::unique_ptr<Group>> m_groups;
+  std::size_t m_curIndent;
+  bool m_hasAnchor;
+  bool m_hasAlias;
+  bool m_hasTag;
+  bool m_hasNonContent;
+  std::size_t m_docCount;
+};
+
+template <typename T>
+void EmitterState::_Set(Setting<T>& fmt, T value, FmtScope::value scope) {
+  switch (scope) {
+    case FmtScope::Local:
+      m_modifiedSettings.push(fmt.set(value));
+      break;
+    case FmtScope::Global:
+      fmt.set(value);
+      m_globalModifiedSettings.push(
+          fmt.set(value));  // this pushes an identity set, so when we restore,
+      // it restores to the value here, and not the previous one
+      break;
+    default:
+      assert(false);
+  }
 }
+}  // namespace YAML
 
-#endif // EMITTERSTATE_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+#endif  // EMITTERSTATE_H_62B23520_7C8E_11DE_8A39_0800200C9A66

src/emitterutils.cpp

@@ -1,145 +1,497 @@
+#include <algorithm>
+#include <iomanip>
+#include <sstream>
+
 #include "emitterutils.h"
 #include "exp.h"
 #include "indentation.h"
-#include "exceptions.h"
+#include "regex_yaml.h"
+#include "regeximpl.h"
 #include "stringsource.h"
-#include <sstream>
-#include <iomanip>
+#include "yaml-cpp/binary.h"  // IWYU pragma: keep
+#include "yaml-cpp/null.h"
+#include "yaml-cpp/ostream_wrapper.h"
 
-namespace YAML
-{
-	namespace Utils
-	{
-		namespace {
-			bool IsPrintable(char ch) {
-				return (0x20 <= ch && ch <= 0x7E);
-			}
-			
-			bool IsValidPlainScalar(const std::string& str, bool inFlow) {
-				// first check the start
-				const RegEx& start = (inFlow ? Exp::PlainScalarInFlow : Exp::PlainScalar);
-				if(!start.Matches(str))
-					return false;
-				
-				// and check the end for plain whitespace (which can't be faithfully kept in a plain scalar)
-				if(!str.empty() && *str.rbegin() == ' ')
-					return false;
+namespace YAML {
+namespace Utils {
+namespace {
+enum { REPLACEMENT_CHARACTER = 0xFFFD };
 
-				// then check until something is disallowed
-				const RegEx& disallowed = (inFlow ? Exp::EndScalarInFlow : Exp::EndScalar)
-				                          || (Exp::BlankOrBreak + Exp::Comment)
-				                          || (!Exp::Printable)
-				                          || Exp::Break
-				                          || Exp::Tab;
-				StringCharSource buffer(str.c_str(), str.size());
-				while(buffer) {
-					if(disallowed.Matches(buffer))
-						return false;
-					++buffer;
-				}
-				
-				return true;
-			}
-		}
-		
-		bool WriteString(ostream& out, const std::string& str, bool inFlow)
-		{
-			if(IsValidPlainScalar(str, inFlow)) {
-				out << str;
-				return true;
-			} else
-				return WriteDoubleQuotedString(out, str);
-		}
-		
-		bool WriteSingleQuotedString(ostream& out, const std::string& str)
-		{
-			out << "'";
-			for(std::size_t i=0;i<str.size();i++) {
-				char ch = str[i];
-				if(!IsPrintable(ch))
-					return false;
-				
-				if(ch == '\'')
-					out << "''";
-				else
-					out << ch;
-			}
-			out << "'";
-			return true;
-		}
-		
-		bool WriteDoubleQuotedString(ostream& out, const std::string& str)
-		{
-			out << "\"";
-			for(std::size_t i=0;i<str.size();i++) {
-				char ch = str[i];
-				if(IsPrintable(ch)) {
-					if(ch == '\"')
-						out << "\\\"";
-					else if(ch == '\\')
-						out << "\\\\";
-					else
-						out << ch;
-				} else {
-					// TODO: for the common escaped characters, give their usual symbol
-					std::stringstream str;
-					str << "\\x" << std::hex << std::setfill('0') << std::setw(2) << static_cast <int>(ch);
-					out << str.str();
-				}
-			}
-			out << "\"";
-			return true;
-		}
+bool IsAnchorChar(int ch) {  // test for ns-anchor-char
+  switch (ch) {
+    case ',':
+    case '[':
+    case ']':
+    case '{':
+    case '}':  // c-flow-indicator
+    case ' ':
+    case '\t':    // s-white
+    case 0xFEFF:  // c-byte-order-mark
+    case 0xA:
+    case 0xD:  // b-char
+      return false;
+    case 0x85:
+      return true;
+  }
 
-		bool WriteLiteralString(ostream& out, const std::string& str, int indent)
-		{
-			out << "|\n";
-			out << IndentTo(indent);
-			for(std::size_t i=0;i<str.size();i++) {
-				if(str[i] == '\n')
-					out << "\n" << IndentTo(indent);
-				else
-					out << str[i];
-			}
-			return true;
-		}
-		
-		bool WriteComment(ostream& out, const std::string& str, int postCommentIndent)
-		{
-			unsigned curIndent = out.col();
-			out << "#" << Indentation(postCommentIndent);
-			for(std::size_t i=0;i<str.size();i++) {
-				if(str[i] == '\n')
-					out << "\n" << IndentTo(curIndent) << "#" << Indentation(postCommentIndent);
-				else
-					out << str[i];
-			}
-			return true;
-		}
+  if (ch < 0x20) {
+    return false;
+  }
 
-		bool WriteAlias(ostream& out, const std::string& str)
-		{
-			out << "*";
-			for(std::size_t i=0;i<str.size();i++) {
-				if(!IsPrintable(str[i]) || str[i] == ' ' || str[i] == '\t' || str[i] == '\n' || str[i] == '\r')
-					return false;
-				
-				out << str[i];
-			}
-			return true;
-		}
-		
-		bool WriteAnchor(ostream& out, const std::string& str)
-		{
-			out << "&";
-			for(std::size_t i=0;i<str.size();i++) {
-				if(!IsPrintable(str[i]) || str[i] == ' ' || str[i] == '\t' || str[i] == '\n' || str[i] == '\r')
-					return false;
-				
-				out << str[i];
-			}
-			return true;
-		}
-	}
+  if (ch < 0x7E) {
+    return true;
+  }
+
+  if (ch < 0xA0) {
+    return false;
+  }
+  if (ch >= 0xD800 && ch <= 0xDFFF) {
+    return false;
+  }
+  if ((ch & 0xFFFE) == 0xFFFE) {
+    return false;
+  }
+  if ((ch >= 0xFDD0) && (ch <= 0xFDEF)) {
+    return false;
+  }
+  if (ch > 0x10FFFF) {
+    return false;
+  }
+
+  return true;
 }
 
+int Utf8BytesIndicated(char ch) {
+  int byteVal = static_cast<unsigned char>(ch);
+  switch (byteVal >> 4) {
+    case 0:
+    case 1:
+    case 2:
+    case 3:
+    case 4:
+    case 5:
+    case 6:
+    case 7:
+      return 1;
+    case 12:
+    case 13:
+      return 2;
+    case 14:
+      return 3;
+    case 15:
+      return 4;
+    default:
+      return -1;
+  }
+}
+
+bool IsTrailingByte(char ch) { return (ch & 0xC0) == 0x80; }
+
+bool GetNextCodePointAndAdvance(int& codePoint,
+                                std::string::const_iterator& first,
+                                std::string::const_iterator last) {
+  if (first == last)
+    return false;
+
+  int nBytes = Utf8BytesIndicated(*first);
+  if (nBytes < 1) {
+    // Bad lead byte
+    ++first;
+    codePoint = REPLACEMENT_CHARACTER;
+    return true;
+  }
+
+  if (nBytes == 1) {
+    codePoint = *first++;
+    return true;
+  }
+
+  // Gather bits from trailing bytes
+  codePoint = static_cast<unsigned char>(*first) & ~(0xFF << (7 - nBytes));
+  ++first;
+  --nBytes;
+  for (; nBytes > 0; ++first, --nBytes) {
+    if ((first == last) || !IsTrailingByte(*first)) {
+      codePoint = REPLACEMENT_CHARACTER;
+      break;
+    }
+    codePoint <<= 6;
+    codePoint |= *first & 0x3F;
+  }
+
+  // Check for illegal code points
+  if (codePoint > 0x10FFFF)
+    codePoint = REPLACEMENT_CHARACTER;
+  else if (codePoint >= 0xD800 && codePoint <= 0xDFFF)
+    codePoint = REPLACEMENT_CHARACTER;
+  else if ((codePoint & 0xFFFE) == 0xFFFE)
+    codePoint = REPLACEMENT_CHARACTER;
+  else if (codePoint >= 0xFDD0 && codePoint <= 0xFDEF)
+    codePoint = REPLACEMENT_CHARACTER;
+  return true;
+}
+
+void WriteCodePoint(ostream_wrapper& out, int codePoint) {
+  if (codePoint < 0 || codePoint > 0x10FFFF) {
+    codePoint = REPLACEMENT_CHARACTER;
+  }
+  if (codePoint <= 0x7F) {
+    out << static_cast<char>(codePoint);
+  } else if (codePoint <= 0x7FF) {
+    out << static_cast<char>(0xC0 | (codePoint >> 6))
+        << static_cast<char>(0x80 | (codePoint & 0x3F));
+  } else if (codePoint <= 0xFFFF) {
+    out << static_cast<char>(0xE0 | (codePoint >> 12))
+        << static_cast<char>(0x80 | ((codePoint >> 6) & 0x3F))
+        << static_cast<char>(0x80 | (codePoint & 0x3F));
+  } else {
+    out << static_cast<char>(0xF0 | (codePoint >> 18))
+        << static_cast<char>(0x80 | ((codePoint >> 12) & 0x3F))
+        << static_cast<char>(0x80 | ((codePoint >> 6) & 0x3F))
+        << static_cast<char>(0x80 | (codePoint & 0x3F));
+  }
+}
+
+bool IsValidPlainScalar(const std::string& str, FlowType::value flowType,
+                        bool allowOnlyAscii) {
+  // check against null
+  if (IsNullString(str)) {
+    return false;
+  }
+
+  // check the start
+  const RegEx& start = (flowType == FlowType::Flow ? Exp::PlainScalarInFlow()
+                                                   : Exp::PlainScalar());
+  if (!start.Matches(str)) {
+    return false;
+  }
+
+  // and check the end for plain whitespace (which can't be faithfully kept in a
+  // plain scalar)
+  if (!str.empty() && *str.rbegin() == ' ') {
+    return false;
+  }
+
+  // then check until something is disallowed
+  static const RegEx& disallowed_flow =
+      Exp::EndScalarInFlow() | (Exp::BlankOrBreak() + Exp::Comment()) |
+      Exp::NotPrintable() | Exp::Utf8_ByteOrderMark() | Exp::Break() |
+      Exp::Tab();
+  static const RegEx& disallowed_block =
+      Exp::EndScalar() | (Exp::BlankOrBreak() + Exp::Comment()) |
+      Exp::NotPrintable() | Exp::Utf8_ByteOrderMark() | Exp::Break() |
+      Exp::Tab();
+  const RegEx& disallowed =
+      flowType == FlowType::Flow ? disallowed_flow : disallowed_block;
+
+  StringCharSource buffer(str.c_str(), str.size());
+  while (buffer) {
+    if (disallowed.Matches(buffer)) {
+      return false;
+    }
+    if (allowOnlyAscii && (0x80 <= static_cast<unsigned char>(buffer[0]))) {
+      return false;
+    }
+    ++buffer;
+  }
+
+  return true;
+}
+
+bool IsValidSingleQuotedScalar(const std::string& str, bool escapeNonAscii) {
+  // TODO: check for non-printable characters?
+  return std::none_of(str.begin(), str.end(), [=](char ch) {
+    return (escapeNonAscii && (0x80 <= static_cast<unsigned char>(ch))) ||
+           (ch == '\n');
+  });
+}
+
+bool IsValidLiteralScalar(const std::string& str, FlowType::value flowType,
+                          bool escapeNonAscii) {
+  if (flowType == FlowType::Flow) {
+    return false;
+  }
+
+  // TODO: check for non-printable characters?
+  return std::none_of(str.begin(), str.end(), [=](char ch) {
+    return (escapeNonAscii && (0x80 <= static_cast<unsigned char>(ch)));
+  });
+}
+
+std::pair<uint16_t, uint16_t> EncodeUTF16SurrogatePair(int codePoint) {
+  const uint32_t leadOffset = 0xD800 - (0x10000 >> 10);
+
+  return {
+    leadOffset | (codePoint >> 10),
+    0xDC00 | (codePoint & 0x3FF),
+  };
+}
+
+void WriteDoubleQuoteEscapeSequence(ostream_wrapper& out, int codePoint, StringEscaping::value stringEscapingStyle) {
+  static const char hexDigits[] = "0123456789abcdef";
+
+  out << "\\";
+  int digits = 8;
+  if (codePoint < 0xFF && stringEscapingStyle != StringEscaping::JSON) {
+    out << "x";
+    digits = 2;
+  } else if (codePoint < 0xFFFF) {
+    out << "u";
+    digits = 4;
+  } else if (stringEscapingStyle != StringEscaping::JSON) {
+    out << "U";
+    digits = 8;
+  } else {
+    auto surrogatePair = EncodeUTF16SurrogatePair(codePoint);
+    WriteDoubleQuoteEscapeSequence(out, surrogatePair.first, stringEscapingStyle);
+    WriteDoubleQuoteEscapeSequence(out, surrogatePair.second, stringEscapingStyle);
+    return;
+  }
+
+  // Write digits into the escape sequence
+  for (; digits > 0; --digits)
+    out << hexDigits[(codePoint >> (4 * (digits - 1))) & 0xF];
+}
+
+bool WriteAliasName(ostream_wrapper& out, const std::string& str) {
+  int codePoint;
+  for (std::string::const_iterator i = str.begin();
+       GetNextCodePointAndAdvance(codePoint, i, str.end());) {
+    if (!IsAnchorChar(codePoint)) {
+      return false;
+    }
+
+    WriteCodePoint(out, codePoint);
+  }
+  return true;
+}
+}  // namespace
+
+StringFormat::value ComputeStringFormat(const std::string& str,
+                                        EMITTER_MANIP strFormat,
+                                        FlowType::value flowType,
+                                        bool escapeNonAscii) {
+  switch (strFormat) {
+    case Auto:
+      if (IsValidPlainScalar(str, flowType, escapeNonAscii)) {
+        return StringFormat::Plain;
+      }
+      return StringFormat::DoubleQuoted;
+    case SingleQuoted:
+      if (IsValidSingleQuotedScalar(str, escapeNonAscii)) {
+        return StringFormat::SingleQuoted;
+      }
+      return StringFormat::DoubleQuoted;
+    case DoubleQuoted:
+      return StringFormat::DoubleQuoted;
+    case Literal:
+      if (IsValidLiteralScalar(str, flowType, escapeNonAscii)) {
+        return StringFormat::Literal;
+      }
+      return StringFormat::DoubleQuoted;
+    default:
+      break;
+  }
+
+  return StringFormat::DoubleQuoted;
+}
+
+bool WriteSingleQuotedString(ostream_wrapper& out, const std::string& str) {
+  out << "'";
+  int codePoint;
+  for (std::string::const_iterator i = str.begin();
+       GetNextCodePointAndAdvance(codePoint, i, str.end());) {
+    if (codePoint == '\n') {
+      return false;  // We can't handle a new line and the attendant indentation
+                     // yet
+    }
+
+    if (codePoint == '\'') {
+      out << "''";
+    } else {
+      WriteCodePoint(out, codePoint);
+    }
+  }
+  out << "'";
+  return true;
+}
+
+bool WriteDoubleQuotedString(ostream_wrapper& out, const std::string& str,
+                             StringEscaping::value stringEscaping) {
+  out << "\"";
+  int codePoint;
+  for (std::string::const_iterator i = str.begin();
+       GetNextCodePointAndAdvance(codePoint, i, str.end());) {
+    switch (codePoint) {
+      case '\"':
+        out << "\\\"";
+        break;
+      case '\\':
+        out << "\\\\";
+        break;
+      case '\n':
+        out << "\\n";
+        break;
+      case '\t':
+        out << "\\t";
+        break;
+      case '\r':
+        out << "\\r";
+        break;
+      case '\b':
+        out << "\\b";
+        break;
+      case '\f':
+        out << "\\f";
+        break;
+      default:
+        if (codePoint < 0x20 ||
+            (codePoint >= 0x80 &&
+             codePoint <= 0xA0)) {  // Control characters and non-breaking space
+          WriteDoubleQuoteEscapeSequence(out, codePoint, stringEscaping);
+        } else if (codePoint == 0xFEFF) {  // Byte order marks (ZWNS) should be
+                                           // escaped (YAML 1.2, sec. 5.2)
+          WriteDoubleQuoteEscapeSequence(out, codePoint, stringEscaping);
+        } else if (stringEscaping == StringEscaping::NonAscii && codePoint > 0x7E) {
+          WriteDoubleQuoteEscapeSequence(out, codePoint, stringEscaping);
+        } else {
+          WriteCodePoint(out, codePoint);
+        }
+    }
+  }
+  out << "\"";
+  return true;
+}
+
+bool WriteLiteralString(ostream_wrapper& out, const std::string& str,
+                        std::size_t indent) {
+  out << "|\n";
+  int codePoint;
+  for (std::string::const_iterator i = str.begin();
+       GetNextCodePointAndAdvance(codePoint, i, str.end());) {
+    if (codePoint == '\n') {
+      out << "\n";
+    } else {
+      out<< IndentTo(indent);
+      WriteCodePoint(out, codePoint);
+    }
+  }
+  return true;
+}
+
+bool WriteChar(ostream_wrapper& out, char ch, StringEscaping::value stringEscapingStyle) {
+  if (('a' <= ch && ch <= 'z') || ('A' <= ch && ch <= 'Z')) {
+    out << ch;
+  } else if (ch == '\"') {
+    out << R"("\"")";
+  } else if (ch == '\t') {
+    out << R"("\t")";
+  } else if (ch == '\n') {
+    out << R"("\n")";
+  } else if (ch == '\b') {
+    out << R"("\b")";
+  } else if (ch == '\r') {
+    out << R"("\r")";
+  } else if (ch == '\f') {
+    out << R"("\f")";
+  } else if (ch == '\\') {
+    out << R"("\\")";
+  } else if (0x20 <= ch && ch <= 0x7e) {
+    out << "\"" << ch << "\"";
+  } else {
+    out << "\"";
+    WriteDoubleQuoteEscapeSequence(out, ch, stringEscapingStyle);
+    out << "\"";
+  }
+  return true;
+}
+
+bool WriteComment(ostream_wrapper& out, const std::string& str,
+                  std::size_t postCommentIndent) {
+  const std::size_t curIndent = out.col();
+  out << "#" << Indentation(postCommentIndent);
+  out.set_comment();
+  int codePoint;
+  for (std::string::const_iterator i = str.begin();
+       GetNextCodePointAndAdvance(codePoint, i, str.end());) {
+    if (codePoint == '\n') {
+      out << "\n"
+          << IndentTo(curIndent) << "#" << Indentation(postCommentIndent);
+      out.set_comment();
+    } else {
+      WriteCodePoint(out, codePoint);
+    }
+  }
+  return true;
+}
+
+bool WriteAlias(ostream_wrapper& out, const std::string& str) {
+  out << "*";
+  return WriteAliasName(out, str);
+}
+
+bool WriteAnchor(ostream_wrapper& out, const std::string& str) {
+  out << "&";
+  return WriteAliasName(out, str);
+}
+
+bool WriteTag(ostream_wrapper& out, const std::string& str, bool verbatim) {
+  out << (verbatim ? "!<" : "!");
+  StringCharSource buffer(str.c_str(), str.size());
+  const RegEx& reValid = verbatim ? Exp::URI() : Exp::Tag();
+  while (buffer) {
+    int n = reValid.Match(buffer);
+    if (n <= 0) {
+      return false;
+    }
+
+    while (--n >= 0) {
+      out << buffer[0];
+      ++buffer;
+    }
+  }
+  if (verbatim) {
+    out << ">";
+  }
+  return true;
+}
+
+bool WriteTagWithPrefix(ostream_wrapper& out, const std::string& prefix,
+                        const std::string& tag) {
+  out << "!";
+  StringCharSource prefixBuffer(prefix.c_str(), prefix.size());
+  while (prefixBuffer) {
+    int n = Exp::URI().Match(prefixBuffer);
+    if (n <= 0) {
+      return false;
+    }
+
+    while (--n >= 0) {
+      out << prefixBuffer[0];
+      ++prefixBuffer;
+    }
+  }
+
+  out << "!";
+  StringCharSource tagBuffer(tag.c_str(), tag.size());
+  while (tagBuffer) {
+    int n = Exp::Tag().Match(tagBuffer);
+    if (n <= 0) {
+      return false;
+    }
+
+    while (--n >= 0) {
+      out << tagBuffer[0];
+      ++tagBuffer;
+    }
+  }
+  return true;
+}
+
+bool WriteBinary(ostream_wrapper& out, const Binary& binary) {
+  WriteDoubleQuotedString(out, EncodeBase64(binary.data(), binary.size()),
+                          StringEscaping::None);
+  return true;
+}
+}  // namespace Utils
+}  // namespace YAML

src/emitterutils.h

@@ -1,24 +1,55 @@
-#pragma once
-
 #ifndef EMITTERUTILS_H_62B23520_7C8E_11DE_8A39_0800200C9A66
 #define EMITTERUTILS_H_62B23520_7C8E_11DE_8A39_0800200C9A66
 
+#if defined(_MSC_VER) ||                                            \
+    (defined(__GNUC__) && (__GNUC__ == 3 && __GNUC_MINOR__ >= 4) || \
+     (__GNUC__ >= 4))  // GCC supports "pragma once" correctly since 3.4
+#pragma once
+#endif
 
-#include "ostream.h"
 #include <string>
 
-namespace YAML
-{
-	namespace Utils
-	{
-		bool WriteString(ostream& out, const std::string& str, bool inFlow);
-		bool WriteSingleQuotedString(ostream& out, const std::string& str);
-		bool WriteDoubleQuotedString(ostream& out, const std::string& str);
-		bool WriteLiteralString(ostream& out, const std::string& str, int indent);
-		bool WriteComment(ostream& out, const std::string& str, int postCommentIndent);
-		bool WriteAlias(ostream& out, const std::string& str);
-		bool WriteAnchor(ostream& out, const std::string& str);
-	}
+#include "emitterstate.h"
+#include "yaml-cpp/emittermanip.h"
+#include "yaml-cpp/ostream_wrapper.h"
+
+namespace YAML {
+class ostream_wrapper;
+}  // namespace YAML
+
+namespace YAML {
+class Binary;
+
+struct StringFormat {
+  enum value { Plain, SingleQuoted, DoubleQuoted, Literal };
+};
+
+struct StringEscaping {
+  enum value { None, NonAscii, JSON };
+};
+
+namespace Utils {
+StringFormat::value ComputeStringFormat(const std::string& str,
+                                        EMITTER_MANIP strFormat,
+                                        FlowType::value flowType,
+                                        bool escapeNonAscii);
+
+bool WriteSingleQuotedString(ostream_wrapper& out, const std::string& str);
+bool WriteDoubleQuotedString(ostream_wrapper& out, const std::string& str,
+                             StringEscaping::value stringEscaping);
+bool WriteLiteralString(ostream_wrapper& out, const std::string& str,
+                        std::size_t indent);
+bool WriteChar(ostream_wrapper& out, char ch,
+               StringEscaping::value stringEscapingStyle);
+bool WriteComment(ostream_wrapper& out, const std::string& str,
+                  std::size_t postCommentIndent);
+bool WriteAlias(ostream_wrapper& out, const std::string& str);
+bool WriteAnchor(ostream_wrapper& out, const std::string& str);
+bool WriteTag(ostream_wrapper& out, const std::string& str, bool verbatim);
+bool WriteTagWithPrefix(ostream_wrapper& out, const std::string& prefix,
+                        const std::string& tag);
+bool WriteBinary(ostream_wrapper& out, const Binary& binary);
+}
 }
 
-#endif // EMITTERUTILS_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+#endif  // EMITTERUTILS_H_62B23520_7C8E_11DE_8A39_0800200C9A66

src/exceptions.cpp

@@ -0,0 +1,20 @@
+#include "yaml-cpp/exceptions.h"
+#include "yaml-cpp/noexcept.h"
+
+namespace YAML {
+
+// These destructors are defined out-of-line so the vtable is only emitted once.
+Exception::~Exception() YAML_CPP_NOEXCEPT = default;
+ParserException::~ParserException() YAML_CPP_NOEXCEPT = default;
+RepresentationException::~RepresentationException() YAML_CPP_NOEXCEPT = default;
+InvalidScalar::~InvalidScalar() YAML_CPP_NOEXCEPT = default;
+KeyNotFound::~KeyNotFound() YAML_CPP_NOEXCEPT = default;
+InvalidNode::~InvalidNode() YAML_CPP_NOEXCEPT = default;
+BadConversion::~BadConversion() YAML_CPP_NOEXCEPT = default;
+BadDereference::~BadDereference() YAML_CPP_NOEXCEPT = default;
+BadSubscript::~BadSubscript() YAML_CPP_NOEXCEPT = default;
+BadPushback::~BadPushback() YAML_CPP_NOEXCEPT = default;
+BadInsert::~BadInsert() YAML_CPP_NOEXCEPT = default;
+EmitterException::~EmitterException() YAML_CPP_NOEXCEPT = default;
+BadFile::~BadFile() YAML_CPP_NOEXCEPT = default;
+}  // namespace YAML

src/exp.cpp

@@ -1,113 +1,137 @@
-#include "crt.h"
-#include "exp.h"
-#include "exceptions.h"
 #include <sstream>
 
-namespace YAML
-{
-	namespace Exp
-	{
-		unsigned ParseHex(const std::string& str, const Mark& mark)
-		{
-			unsigned value = 0;
-			for(std::size_t i=0;i<str.size();i++) {
-				char ch = str[i];
-				int digit = 0;
-				if('a' <= ch && ch <= 'f')
-					digit = ch - 'a' + 10;
-				else if('A' <= ch && ch <= 'F')
-					digit = ch - 'A' + 10;
-				else if('0' <= ch && ch <= '9')
-					digit = ch - '0';
-				else
-					throw ParserException(mark, ErrorMsg::INVALID_HEX);
+#include "exp.h"
+#include "stream.h"
+#include "yaml-cpp/exceptions.h"  // IWYU pragma: keep
 
-				value = (value << 4) + digit;
-			}
+namespace YAML {
+struct Mark;
+}  // namespace YAML
 
-			return value;
-		}
+namespace YAML {
+namespace Exp {
+unsigned ParseHex(const std::string& str, const Mark& mark) {
+  unsigned value = 0;
+  for (char ch : str) {
+    int digit = 0;
+    if ('a' <= ch && ch <= 'f')
+      digit = ch - 'a' + 10;
+    else if ('A' <= ch && ch <= 'F')
+      digit = ch - 'A' + 10;
+    else if ('0' <= ch && ch <= '9')
+      digit = ch - '0';
+    else
+      throw ParserException(mark, ErrorMsg::INVALID_HEX);
 
-		std::string Str(char ch)
-		{
-			return std::string("") + ch;
-		}
+    value = (value << 4) + digit;
+  }
 
-		// Escape
-		// . Translates the next 'codeLength' characters into a hex number and returns the result.
-		// . Throws if it's not actually hex.
-		std::string Escape(Stream& in, int codeLength)
-		{
-			// grab string
-			std::string str;
-			for(int i=0;i<codeLength;i++)
-				str += in.get();
-
-			// get the value
-			unsigned value = ParseHex(str, in.mark());
-
-			// legal unicode?
-			if((value >= 0xD800 && value <= 0xDFFF) || value > 0x10FFFF) {
-				std::stringstream msg;
-				msg << ErrorMsg::INVALID_UNICODE << value;
-				throw ParserException(in.mark(), msg.str());
-			}
-
-			// now break it up into chars
-			if(value <= 0x7F)
-				return Str(value);
-			else if(value <= 0x7FF)
-				return Str(0xC0 + (value >> 6)) + Str(0x80 + (value & 0x3F));
-			else if(value <= 0xFFFF)
-				return Str(0xE0 + (value >> 12)) + Str(0x80 + ((value >> 6) & 0x3F)) + Str(0x80 + (value & 0x3F));
-			else
-				return Str(0xF0 + (value >> 18)) + Str(0x80 + ((value >> 12) & 0x3F)) +
-					Str(0x80 + ((value >> 6) & 0x3F)) + Str(0x80 + (value & 0x3F));
-		}
-
-		// Escape
-		// . Escapes the sequence starting 'in' (it must begin with a '\' or single quote)
-		//   and returns the result.
-		// . Throws if it's an unknown escape character.
-		std::string Escape(Stream& in)
-		{
-			// eat slash
-			char escape = in.get();
-
-			// switch on escape character
-			char ch = in.get();
-
-			// first do single quote, since it's easier
-			if(escape == '\'' && ch == '\'')
-				return "\'";
-
-			// now do the slash (we're not gonna check if it's a slash - you better pass one!)
-			switch(ch) {
-				case '0': return "\0";
-				case 'a': return "\x07";
-				case 'b': return "\x08";
-				case 't':
-                case '\t': return "\x09";
-				case 'n': return "\x0A";
-				case 'v': return "\x0B";
-				case 'f': return "\x0C";
-				case 'r': return "\x0D";
-				case 'e': return "\x1B";
-				case ' ': return "\x20";
-				case '\"': return "\"";
-				case '\'': return "\'";
-				case '\\': return "\\";
-				case 'N': return "\xC2\x85";  // NEL (#x85)
-				case '_': return "\xC2\xA0";  // #xA0
-				case 'L': return "\xE2\x80\xA8";  // LS (#x2028)
-				case 'P': return "\xE2\x80\xA9";  // PS (#x2029)
-				case 'x': return Escape(in, 2);
-				case 'u': return Escape(in, 4);
-				case 'U': return Escape(in, 8);
-			}
-
-			std::stringstream msg;
-			throw ParserException(in.mark(), ErrorMsg::INVALID_ESCAPE + ch);
-		}
-	}
+  return value;
 }
+
+std::string Str(unsigned ch) { return std::string(1, static_cast<char>(ch)); }
+
+// Escape
+// . Translates the next 'codeLength' characters into a hex number and returns
+// the result.
+// . Throws if it's not actually hex.
+std::string Escape(Stream& in, int codeLength) {
+  // grab string
+  std::string str;
+  for (int i = 0; i < codeLength; i++)
+    str += in.get();
+
+  // get the value
+  unsigned value = ParseHex(str, in.mark());
+
+  // legal unicode?
+  if ((value >= 0xD800 && value <= 0xDFFF) || value > 0x10FFFF) {
+    std::stringstream msg;
+    msg << ErrorMsg::INVALID_UNICODE << value;
+    throw ParserException(in.mark(), msg.str());
+  }
+
+  // now break it up into chars
+  if (value <= 0x7F)
+    return Str(value);
+
+  if (value <= 0x7FF)
+    return Str(0xC0 + (value >> 6)) + Str(0x80 + (value & 0x3F));
+
+  if (value <= 0xFFFF)
+    return Str(0xE0 + (value >> 12)) + Str(0x80 + ((value >> 6) & 0x3F)) +
+           Str(0x80 + (value & 0x3F));
+
+  return Str(0xF0 + (value >> 18)) + Str(0x80 + ((value >> 12) & 0x3F)) +
+         Str(0x80 + ((value >> 6) & 0x3F)) + Str(0x80 + (value & 0x3F));
+}
+
+// Escape
+// . Escapes the sequence starting 'in' (it must begin with a '\' or single
+// quote)
+//   and returns the result.
+// . Throws if it's an unknown escape character.
+std::string Escape(Stream& in) {
+  // eat slash
+  char escape = in.get();
+
+  // switch on escape character
+  char ch = in.get();
+
+  // first do single quote, since it's easier
+  if (escape == '\'' && ch == '\'')
+    return "\'";
+
+  // now do the slash (we're not gonna check if it's a slash - you better pass
+  // one!)
+  switch (ch) {
+    case '0':
+      return std::string(1, '\x00');
+    case 'a':
+      return "\x07";
+    case 'b':
+      return "\x08";
+    case 't':
+    case '\t':
+      return "\x09";
+    case 'n':
+      return "\x0A";
+    case 'v':
+      return "\x0B";
+    case 'f':
+      return "\x0C";
+    case 'r':
+      return "\x0D";
+    case 'e':
+      return "\x1B";
+    case ' ':
+      return R"( )";
+    case '\"':
+      return "\"";
+    case '\'':
+      return "\'";
+    case '\\':
+      return "\\";
+    case '/':
+      return "/";
+    case 'N':
+      return "\x85";
+    case '_':
+      return "\xA0";
+    case 'L':
+      return "\xE2\x80\xA8";  // LS (#x2028)
+    case 'P':
+      return "\xE2\x80\xA9";  // PS (#x2029)
+    case 'x':
+      return Escape(in, 2);
+    case 'u':
+      return Escape(in, 4);
+    case 'U':
+      return Escape(in, 8);
+  }
+
+  std::stringstream msg;
+  throw ParserException(in.mark(), std::string(ErrorMsg::INVALID_ESCAPE) + ch);
+}
+}  // namespace Exp
+}  // namespace YAML

src/exp.h

@@ -1,80 +1,222 @@
-#pragma once
-
 #ifndef EXP_H_62B23520_7C8E_11DE_8A39_0800200C9A66
 #define EXP_H_62B23520_7C8E_11DE_8A39_0800200C9A66
 
+#if defined(_MSC_VER) ||                                            \
+    (defined(__GNUC__) && (__GNUC__ == 3 && __GNUC_MINOR__ >= 4) || \
+     (__GNUC__ >= 4))  // GCC supports "pragma once" correctly since 3.4
+#pragma once
+#endif
 
-#include "regex.h"
-#include <string>
 #include <ios>
+#include <string>
+
+#include "regex_yaml.h"
 #include "stream.h"
 
-namespace YAML
-{
-	////////////////////////////////////////////////////////////////////////////////
-	// Here we store a bunch of expressions for matching different parts of the file.
+namespace YAML {
+////////////////////////////////////////////////////////////////////////////////
+// Here we store a bunch of expressions for matching different parts of the
+// file.
 
-	namespace Exp
-	{
-		// misc
-		const RegEx Space = RegEx(' ');
-		const RegEx Tab = RegEx('\t');
-		const RegEx Blank = Space || Tab;
-		const RegEx Break = RegEx('\n') || RegEx("\r\n");
-		const RegEx BlankOrBreak = Blank || Break;
-		const RegEx Digit = RegEx('0', '9');
-		const RegEx Alpha = RegEx('a', 'z') || RegEx('A', 'Z');
-		const RegEx AlphaNumeric = Alpha || Digit;
-		const RegEx Hex = Digit || RegEx('A', 'F') || RegEx('a', 'f');
-		const RegEx Printable = RegEx(0x20, 0x7E);
-
-		// actual tags
-
-		const RegEx DocStart = RegEx("---") + (BlankOrBreak || RegEx());
-		const RegEx DocEnd = RegEx("...") + (BlankOrBreak || RegEx());
-		const RegEx DocIndicator = DocStart || DocEnd;
-		const RegEx BlockEntry = RegEx('-') + (BlankOrBreak || RegEx());
-		const RegEx Key = RegEx('?'),
-		            KeyInFlow = RegEx('?') + BlankOrBreak;
-		const RegEx Value = RegEx(':') + (BlankOrBreak || RegEx()),
-		            ValueInFlow = RegEx(':') + (BlankOrBreak || RegEx(",}", REGEX_OR));
-		const RegEx Comment = RegEx('#');
-		const RegEx AnchorEnd = RegEx("?:,]}%@`", REGEX_OR) || BlankOrBreak;
-
-		// Plain scalar rules:
-		// . Cannot start with a blank.
-		// . Can never start with any of , [ ] { } # & * ! | > \' \" % @ `
-		// . In the block context - ? : must be not be followed with a space.
-		// . In the flow context ? is illegal and : and - must not be followed with a space.
-		const RegEx PlainScalar = !(BlankOrBreak || RegEx(",[]{}#&*!|>\'\"%@`", REGEX_OR) || (RegEx("-?:", REGEX_OR) + Blank)),
-		            PlainScalarInFlow = !(BlankOrBreak || RegEx("?,[]{}#&*!|>\'\"%@`", REGEX_OR) || (RegEx("-:", REGEX_OR) + Blank));
-		const RegEx EndScalar = RegEx(':') + (BlankOrBreak || RegEx()),
-		            EndScalarInFlow = (RegEx(':') + (BlankOrBreak || RegEx(",]}", REGEX_OR))) || RegEx(",?[]{}", REGEX_OR);
-
-		const RegEx EscSingleQuote = RegEx("\'\'");
-		const RegEx EscBreak = RegEx('\\') + Break;
-
-		const RegEx ChompIndicator = RegEx("+-", REGEX_OR);
-		const RegEx Chomp = (ChompIndicator + Digit) || (Digit + ChompIndicator) || ChompIndicator || Digit;
-
-		// and some functions
-		std::string Escape(Stream& in);
-	}
-
-	namespace Keys
-	{
-		const char Directive = '%';
-		const char FlowSeqStart = '[';
-		const char FlowSeqEnd = ']';
-		const char FlowMapStart = '{';
-		const char FlowMapEnd = '}';
-		const char FlowEntry = ',';
-		const char Alias = '*';
-		const char Anchor = '&';
-		const char Tag = '!';
-		const char LiteralScalar = '|';
-		const char FoldedScalar = '>';
-	}
+namespace Exp {
+// misc
+inline const RegEx& Empty() {
+  static const RegEx e;
+  return e;
+}
+inline const RegEx& Space() {
+  static const RegEx e = RegEx(' ');
+  return e;
+}
+inline const RegEx& Tab() {
+  static const RegEx e = RegEx('\t');
+  return e;
+}
+inline const RegEx& Blank() {
+  static const RegEx e = Space() | Tab();
+  return e;
+}
+inline const RegEx& Break() {
+  static const RegEx e = RegEx('\n') | RegEx("\r\n");
+  return e;
+}
+inline const RegEx& BlankOrBreak() {
+  static const RegEx e = Blank() | Break();
+  return e;
+}
+inline const RegEx& Digit() {
+  static const RegEx e = RegEx('0', '9');
+  return e;
+}
+inline const RegEx& Alpha() {
+  static const RegEx e = RegEx('a', 'z') | RegEx('A', 'Z');
+  return e;
+}
+inline const RegEx& AlphaNumeric() {
+  static const RegEx e = Alpha() | Digit();
+  return e;
+}
+inline const RegEx& Word() {
+  static const RegEx e = AlphaNumeric() | RegEx('-');
+  return e;
+}
+inline const RegEx& Hex() {
+  static const RegEx e = Digit() | RegEx('A', 'F') | RegEx('a', 'f');
+  return e;
+}
+// Valid Unicode code points that are not part of c-printable (YAML 1.2, sec.
+// 5.1)
+inline const RegEx& NotPrintable() {
+  static const RegEx e =
+      RegEx(0) |
+      RegEx("\x01\x02\x03\x04\x05\x06\x07\x08\x0B\x0C\x7F", REGEX_OR) |
+      RegEx(0x0E, 0x1F) |
+      (RegEx('\xC2') + (RegEx('\x80', '\x84') | RegEx('\x86', '\x9F')));
+  return e;
+}
+inline const RegEx& Utf8_ByteOrderMark() {
+  static const RegEx e = RegEx("\xEF\xBB\xBF");
+  return e;
 }
 
-#endif // EXP_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+// actual tags
+
+inline const RegEx& DocStart() {
+  static const RegEx e = RegEx("---") + (BlankOrBreak() | RegEx());
+  return e;
+}
+inline const RegEx& DocEnd() {
+  static const RegEx e = RegEx("...") + (BlankOrBreak() | RegEx());
+  return e;
+}
+inline const RegEx& DocIndicator() {
+  static const RegEx e = DocStart() | DocEnd();
+  return e;
+}
+inline const RegEx& BlockEntry() {
+  static const RegEx e = RegEx('-') + (BlankOrBreak() | RegEx());
+  return e;
+}
+inline const RegEx& Key() {
+  static const RegEx e = RegEx('?') + BlankOrBreak();
+  return e;
+}
+inline const RegEx& KeyInFlow() {
+  static const RegEx e = RegEx('?') + BlankOrBreak();
+  return e;
+}
+inline const RegEx& Value() {
+  static const RegEx e = RegEx(':') + (BlankOrBreak() | RegEx());
+  return e;
+}
+inline const RegEx& ValueInFlow() {
+  static const RegEx e = RegEx(':') + (BlankOrBreak() | RegEx(",]}", REGEX_OR));
+  return e;
+}
+inline const RegEx& ValueInJSONFlow() {
+  static const RegEx e = RegEx(':');
+  return e;
+}
+inline const RegEx Comment() {
+  static const RegEx e = RegEx('#');
+  return e;
+}
+inline const RegEx& Anchor() {
+  static const RegEx e = !(RegEx("[]{},", REGEX_OR) | BlankOrBreak());
+  return e;
+}
+inline const RegEx& AnchorEnd() {
+  static const RegEx e = RegEx("?:,]}%@`", REGEX_OR) | BlankOrBreak();
+  return e;
+}
+inline const RegEx& URI() {
+  static const RegEx e = Word() | RegEx("#;/?:@&=+$,_.!~*'()[]", REGEX_OR) |
+                         (RegEx('%') + Hex() + Hex());
+  return e;
+}
+inline const RegEx& Tag() {
+  static const RegEx e = Word() | RegEx("#;/?:@&=+$_.~*'()", REGEX_OR) |
+                         (RegEx('%') + Hex() + Hex());
+  return e;
+}
+
+// Plain scalar rules:
+// . Cannot start with a blank.
+// . Can never start with any of , [ ] { } # & * ! | > \' \" % @ `
+// . In the block context - ? : must be not be followed with a space.
+// . In the flow context ? is illegal and : and - must not be followed with a
+// space.
+inline const RegEx& PlainScalar() {
+  static const RegEx e =
+      !(BlankOrBreak() | RegEx(",[]{}#&*!|>\'\"%@`", REGEX_OR) |
+        (RegEx("-?:", REGEX_OR) + (BlankOrBreak() | RegEx())));
+  return e;
+}
+inline const RegEx& PlainScalarInFlow() {
+  static const RegEx e =
+      !(BlankOrBreak() | RegEx("?,[]{}#&*!|>\'\"%@`", REGEX_OR) |
+        (RegEx("-:", REGEX_OR) + (Blank() | RegEx())));
+  return e;
+}
+inline const RegEx& EndScalar() {
+  static const RegEx e = RegEx(':') + (BlankOrBreak() | RegEx());
+  return e;
+}
+inline const RegEx& EndScalarInFlow() {
+  static const RegEx e =
+      (RegEx(':') + (BlankOrBreak() | RegEx() | RegEx(",]}", REGEX_OR))) |
+      RegEx(",?[]{}", REGEX_OR);
+  return e;
+}
+
+inline const RegEx& ScanScalarEndInFlow() {
+  static const RegEx e = (EndScalarInFlow() | (BlankOrBreak() + Comment()));
+  return e;
+}
+
+inline const RegEx& ScanScalarEnd() {
+  static const RegEx e = EndScalar() | (BlankOrBreak() + Comment());
+  return e;
+}
+inline const RegEx& EscSingleQuote() {
+  static const RegEx e = RegEx("\'\'");
+  return e;
+}
+inline const RegEx& EscBreak() {
+  static const RegEx e = RegEx('\\') + Break();
+  return e;
+}
+
+inline const RegEx& ChompIndicator() {
+  static const RegEx e = RegEx("+-", REGEX_OR);
+  return e;
+}
+inline const RegEx& Chomp() {
+  static const RegEx e = (ChompIndicator() + Digit()) |
+                         (Digit() + ChompIndicator()) | ChompIndicator() |
+                         Digit();
+  return e;
+}
+
+// and some functions
+std::string Escape(Stream& in);
+}  // namespace Exp
+
+namespace Keys {
+const char Directive = '%';
+const char FlowSeqStart = '[';
+const char FlowSeqEnd = ']';
+const char FlowMapStart = '{';
+const char FlowMapEnd = '}';
+const char FlowEntry = ',';
+const char Alias = '*';
+const char Anchor = '&';
+const char Tag = '!';
+const char LiteralScalar = '|';
+const char FoldedScalar = '>';
+const char VerbatimTagStart = '<';
+const char VerbatimTagEnd = '>';
+}  // namespace Keys
+}  // namespace YAML
+
+#endif  // EXP_H_62B23520_7C8E_11DE_8A39_0800200C9A66