【C++ qt4】操作json学习笔记

一时失言乱红尘 2024-03-22 16:11 69阅读 0赞

本博文源于笔者在学习c++ qt4操作json文件，qt4不支持json，里面的函数是json.h与jsoncpp.cpp我已经附在文末，大家可复制重命名用，里面的案例可以自己拿来敲或者直接copy也行.,一定利用好目录拖动，不然很长。

#### 文章目录 ####

*   *  1.从json文件里读取json
     *  2.从创建的类型写入json文件
     *  3.创建数据类型不同的json
     *  4.从str里读取成json
     *  5.读取json文件并打印
     *  json.h
     *  jsoncpp.cpp

### 1.从json文件里读取json ###

Json::Reader reader;
    Json::Value root;
    
    ifstream is;
    is.open("face.json",ios::binary);
    if(reader.parse(is,root)){
    	Json::StyledWriter sw;
    	cout  << sw.write(root) << endl << endl;
    	
    }

### 2.从创建的类型写入json文件 ###

Json::Value root;
    	root["Group Name"] = "Together";
    	root["Number"] = 2;
    
    	Json::Value student;
    	student["Zhangshan"].append(180);
    	student["Zhangshan"].append(70);
    	student["Lisi"].append(165);
    	student["Lisi"].append(50);
    
    	root["Students"] = student;
    
    	//格式化输出到文件
    	ofstream os;
    	os.open("test.json",std::ios::out);
    	if(!os.is_open())
    		cout << "open file failed";
    	Json::StyledWriter sw;
    	os << sw.write(root);
    	os.close();
    	cout << root;

### 3.创建数据类型不同的json ###

void jsontest2::ValueTest()
    {
    	Json::Value json_temp;
    	json_temp["name"] = Json::Value("huchao");
    	json_temp["age"] = Json::Value(26);
    	
    
    	Json::Value root;
    	root["key_string"] = Json::Value("value_string");
    	root["key_number"] = Json::Value(12345);
    	root["key_boolean"] = Json::Value(false);
    	root["key_object"] = json_temp;
    	root["key_array"].append("array_string");
    	root["key_array"].append(1234);
    	Json::ValueType type = root.type();
    	cout << type << endl;
    	cout << root << endl;
    	Json::StyledWriter sw;
    	cout << sw.write(root) << endl;
    }

### 4.从str里读取成json ###

void jsontest2::ReadJsonStr(string strData)
    {
    	Json::Reader reader;
    	Json::Value value;
    
    	if(reader.parse(strData,value)){
    		string name = value["name"].asString();
    		cout << "name:" << name << endl;
    		
    		int age = value["age"].asInt();
    		cout << "age:" << age << endl;
    
    		const Json::Value arr = value["major"];
    		for(unsigned int  i = 0;i < arr.size();i++){
    			string major = arr.asString();
    			cout << "major:" << major << endl;
    		}
    
    		const Json::Value arr1 = value["friends"];
    		for(unsigned int i = 0;i < arr1.size();i++){
    			string friend_name = arr1[i]["friend_name"].asString();
    			int friend_age = arr1[i]["friend_age"].asInt();
    			string friend_major = arr1[i]["friend_major"].asString();
    			cout << "friend_name:" << friend_name << "\t"
    				<< "friend_age:" << friend_age << "\t"
    				<< "friend_major" << friend_major << endl;
    		}
    	}
    }

### 5.读取json文件并打印 ###

void jsontest2::readJsonFile()
    {
    	Json::Reader reader;
    	Json::Value root;
    	ifstream is("test.json",ios::binary);
    	if(!is.is_open())
    		cout << "open file failed" << endl;
    	if(reader.parse(is,root)){
    		string group_name = root["Group Name"].asString();
    		int number = root["Number"].asInt();
    		cout << "Group Name: " << group_name << endl;
    		cout << "Number: " << number << endl;
    
    		//读取子节点信息
    		int body[2];   //身高、体重
    		/********注意遍历json数组的时候要使用unsigned int的变量********/
    		body[0] = root["Students"]["Zhangshan"][(unsigned int)0].asInt();     
    		body[1] = root["Students"]["Zhangshan"][(unsigned int)1].asInt();
    		cout << "Zhangsan height:" << body[0] << " weight: " << body[1] << endl;
    
    		body[0] = root["Students"]["Lisi"][(unsigned int)0].asInt();
    		body[1] = root["Students"]["Lisi"][(unsigned int)1].asInt();
    		cout << "Lisi height:" << body[0] << " weight: " << body[1] << endl;
    	}
    	is.close();
    }

### json.h ###

/// Json-cpp amalgated header (http://jsoncpp.sourceforge.net/).
    /// It is intended to be used with #include "json/json.h"
    
    // //
    // Beginning of content of file: LICENSE
    // //
    
    /*
    The JsonCpp library's source code, including accompanying documentation, 
    tests and demonstration applications, are licensed under the following
    conditions...
    
    The author (Baptiste Lepilleur) explicitly disclaims copyright in all 
    jurisdictions which recognize such a disclaimer. In such jurisdictions, 
    this software is released into the Public Domain.
    
    In jurisdictions which do not recognize Public Domain property (e.g. Germany as of
    2010), this software is Copyright (c) 2007-2010 by Baptiste Lepilleur, and is
    released under the terms of the MIT License (see below).
    
    In jurisdictions which recognize Public Domain property, the user of this 
    software may choose to accept it either as 1) Public Domain, 2) under the 
    conditions of the MIT License (see below), or 3) under the terms of dual 
    Public Domain/MIT License conditions described here, as they choose.
    
    The MIT License is about as close to Public Domain as a license can get, and is
    described in clear, concise terms at:
    
       http://en.wikipedia.org/wiki/MIT_License
       
    The full text of the MIT License follows:
    
    ========================================================================
    Copyright (c) 2007-2010 Baptiste Lepilleur
    
    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.
    ========================================================================
    (END LICENSE TEXT)
    
    The MIT license is compatible with both the GPL and commercial
    software, affording one all of the rights of Public Domain with the
    minor nuisance of being required to keep the above copyright notice
    and license text in the source code. Note also that by accepting the
    Public Domain "license" you can re-license your copy using whatever
    license you like.
    
    */
    
    // //
    // End of content of file: LICENSE
    // //
    
    
    
    
    
    #ifndef JSON_AMALGATED_H_INCLUDED
    # define JSON_AMALGATED_H_INCLUDED
    /// If defined, indicates that the source file is amalgated
    /// to prevent private header inclusion.
    #define JSON_IS_AMALGAMATION
    
    // //
    // Beginning of content of file: include/json/version.h
    // //
    
    // DO NOT EDIT. This file (and "version") is generated by CMake.
    // Run CMake configure step to update it.
    #ifndef JSON_VERSION_H_INCLUDED
    # define JSON_VERSION_H_INCLUDED
    
    # define JSONCPP_VERSION_STRING "0.10.5"
    # define JSONCPP_VERSION_MAJOR 0
    # define JSONCPP_VERSION_MINOR 10
    # define JSONCPP_VERSION_PATCH 5
    # define JSONCPP_VERSION_QUALIFIER
    # define JSONCPP_VERSION_HEXA ((JSONCPP_VERSION_MAJOR << 24) | (JSONCPP_VERSION_MINOR << 16) | (JSONCPP_VERSION_PATCH << 8))
    
    #endif // JSON_VERSION_H_INCLUDED
    
    // //
    // End of content of file: include/json/version.h
    // //
    
    
    
    
    
    
    // //
    // Beginning of content of file: include/json/config.h
    // //
    
    // Copyright 2007-2010 Baptiste Lepilleur
    // Distributed under MIT license, or public domain if desired and
    // recognized in your jurisdiction.
    // See file LICENSE for detail or copy at http://jsoncpp.sourceforge.net/LICENSE
    
    #ifndef JSON_CONFIG_H_INCLUDED
    #define JSON_CONFIG_H_INCLUDED
    
    /// If defined, indicates that json library is embedded in CppTL library.
    //# define JSON_IN_CPPTL 1
    
    /// If defined, indicates that json may leverage CppTL library
    //#  define JSON_USE_CPPTL 1
    /// If defined, indicates that cpptl vector based map should be used instead of
    /// std::map
    /// as Value container.
    //#  define JSON_USE_CPPTL_SMALLMAP 1
    
    // If non-zero, the library uses exceptions to report bad input instead of C
    // assertion macros. The default is to use exceptions.
    #ifndef JSON_USE_EXCEPTION
    #define JSON_USE_EXCEPTION 1
    #endif
    
    /// If defined, indicates that the source file is amalgated
    /// to prevent private header inclusion.
    /// Remarks: it is automatically defined in the generated amalgated header.
    // #define JSON_IS_AMALGAMATION
    
    #ifdef JSON_IN_CPPTL
    #include <cpptl/config.h>
    #ifndef JSON_USE_CPPTL
    #define JSON_USE_CPPTL 1
    #endif
    #endif
    
    #ifdef JSON_IN_CPPTL
    #define JSON_API CPPTL_API
    #elif defined(JSON_DLL_BUILD)
    #if defined(_MSC_VER)
    #define JSON_API __declspec(dllexport)
    #define JSONCPP_DISABLE_DLL_INTERFACE_WARNING
    #endif // if defined(_MSC_VER)
    #elif defined(JSON_DLL)
    #if defined(_MSC_VER)
    #define JSON_API __declspec(dllimport)
    #define JSONCPP_DISABLE_DLL_INTERFACE_WARNING
    #endif // if defined(_MSC_VER)
    #endif // ifdef JSON_IN_CPPTL
    #if !defined(JSON_API)
    #define JSON_API
    #endif
    
    // If JSON_NO_INT64 is defined, then Json only support C++ "int" type for
    // integer
    // Storages, and 64 bits integer support is disabled.
    // #define JSON_NO_INT64 1
    
    #if defined(_MSC_VER) && _MSC_VER <= 1200 // MSVC 6
    // Microsoft Visual Studio 6 only support conversion from __int64 to double
    // (no conversion from unsigned __int64).
    #define JSON_USE_INT64_DOUBLE_CONVERSION 1
    // Disable warning 4786 for VS6 caused by STL (identifier was truncated to '255'
    // characters in the debug information)
    // All projects I've ever seen with VS6 were using this globally (not bothering
    // with pragma push/pop).
    #pragma warning(disable : 4786)
    #endif // if defined(_MSC_VER)  &&  _MSC_VER < 1200 // MSVC 6
    
    #if defined(_MSC_VER) && _MSC_VER >= 1500 // MSVC 2008
    /// Indicates that the following function is deprecated.
    #define JSONCPP_DEPRECATED(message) __declspec(deprecated(message))
    #elif defined(__clang__) && defined(__has_feature)
    #if __has_feature(attribute_deprecated_with_message)
    #define JSONCPP_DEPRECATED(message)  __attribute__ ((deprecated(message)))
    #endif
    #elif defined(__GNUC__) &&  (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 5))
    #define JSONCPP_DEPRECATED(message)  __attribute__ ((deprecated(message)))
    #elif defined(__GNUC__) &&  (__GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 1))
    #define JSONCPP_DEPRECATED(message)  __attribute__((__deprecated__))
    #endif
    
    #if !defined(JSONCPP_DEPRECATED)
    #define JSONCPP_DEPRECATED(message)
    #endif // if !defined(JSONCPP_DEPRECATED)
    
    namespace Json {
    typedef int Int;
    typedef unsigned int UInt;
    #if defined(JSON_NO_INT64)
    typedef int LargestInt;
    typedef unsigned int LargestUInt;
    #undef JSON_HAS_INT64
    #else                 // if defined(JSON_NO_INT64)
    // For Microsoft Visual use specific types as long long is not supported
    #if defined(_MSC_VER) // Microsoft Visual Studio
    typedef __int64 Int64;
    typedef unsigned __int64 UInt64;
    #else                 // if defined(_MSC_VER) // Other platforms, use long long
    typedef long long int Int64;
    typedef unsigned long long int UInt64;
    #endif // if defined(_MSC_VER)
    typedef Int64 LargestInt;
    typedef UInt64 LargestUInt;
    #define JSON_HAS_INT64
    #endif // if defined(JSON_NO_INT64)
    } // end namespace Json
    
    #endif // JSON_CONFIG_H_INCLUDED
    
    // //
    // End of content of file: include/json/config.h
    // //
    
    
    
    
    
    
    // //
    // Beginning of content of file: include/json/forwards.h
    // //
    
    // Copyright 2007-2010 Baptiste Lepilleur
    // Distributed under MIT license, or public domain if desired and
    // recognized in your jurisdiction.
    // See file LICENSE for detail or copy at http://jsoncpp.sourceforge.net/LICENSE
    
    #ifndef JSON_FORWARDS_H_INCLUDED
    #define JSON_FORWARDS_H_INCLUDED
    
    #if !defined(JSON_IS_AMALGAMATION)
    #include "config.h"
    #endif // if !defined(JSON_IS_AMALGAMATION)
    
    namespace Json {
    
    // writer.h
    class FastWriter;
    class StyledWriter;
    
    // reader.h
    class Reader;
    
    // features.h
    class Features;
    
    // value.h
    typedef unsigned int ArrayIndex;
    class StaticString;
    class Path;
    class PathArgument;
    class Value;
    class ValueIteratorBase;
    class ValueIterator;
    class ValueConstIterator;
    
    } // namespace Json
    
    #endif // JSON_FORWARDS_H_INCLUDED
    
    // //
    // End of content of file: include/json/forwards.h
    // //
    
    
    
    
    
    
    // //
    // Beginning of content of file: include/json/features.h
    // //
    
    // Copyright 2007-2010 Baptiste Lepilleur
    // Distributed under MIT license, or public domain if desired and
    // recognized in your jurisdiction.
    // See file LICENSE for detail or copy at http://jsoncpp.sourceforge.net/LICENSE
    
    #ifndef CPPTL_JSON_FEATURES_H_INCLUDED
    #define CPPTL_JSON_FEATURES_H_INCLUDED
    
    #if !defined(JSON_IS_AMALGAMATION)
    #include "forwards.h"
    #endif // if !defined(JSON_IS_AMALGAMATION)
    
    namespace Json {
    
    /** \brief Configuration passed to reader and writer.
     * This configuration object can be used to force the Reader or Writer
     * to behave in a standard conforming way.
     */
    class JSON_API Features {
    public:
      /** \brief A configuration that allows all features and assumes all strings
       * are UTF-8.
       * - C & C++ comments are allowed
       * - Root object can be any JSON value
       * - Assumes Value strings are encoded in UTF-8
       */
      static Features all();
    
      /** \brief A configuration that is strictly compatible with the JSON
       * specification.
       * - Comments are forbidden.
       * - Root object must be either an array or an object value.
       * - Assumes Value strings are encoded in UTF-8
       */
      static Features strictMode();
    
      /** \brief Initialize the configuration like JsonConfig::allFeatures;
       */
      Features();
    
      /// \c true if comments are allowed. Default: \c true.
      bool allowComments_;
    
      /// \c true if root must be either an array or an object value. Default: \c
      /// false.
      bool strictRoot_;
    };
    
    } // namespace Json
    
    #endif // CPPTL_JSON_FEATURES_H_INCLUDED
    
    // //
    // End of content of file: include/json/features.h
    // //
    
    
    
    
    
    
    // //
    // Beginning of content of file: include/json/value.h
    // //
    
    // Copyright 2007-2010 Baptiste Lepilleur
    // Distributed under MIT license, or public domain if desired and
    // recognized in your jurisdiction.
    // See file LICENSE for detail or copy at http://jsoncpp.sourceforge.net/LICENSE
    
    #ifndef CPPTL_JSON_H_INCLUDED
    #define CPPTL_JSON_H_INCLUDED
    
    #if !defined(JSON_IS_AMALGAMATION)
    #include "forwards.h"
    #endif // if !defined(JSON_IS_AMALGAMATION)
    #include <string>
    #include <vector>
    #include <exception>
    
    #ifndef JSON_USE_CPPTL_SMALLMAP
    #include <map>
    #else
    #include <cpptl/smallmap.h>
    #endif
    #ifdef JSON_USE_CPPTL
    #include <cpptl/forwards.h>
    #endif
    
    // Disable warning C4251: <data member>: <type> needs to have dll-interface to
    // be used by...
    #if defined(JSONCPP_DISABLE_DLL_INTERFACE_WARNING)
    #pragma warning(push)
    #pragma warning(disable : 4251)
    #endif // if defined(JSONCPP_DISABLE_DLL_INTERFACE_WARNING)
    
    /** \brief JSON (JavaScript Object Notation).
     */
    namespace Json {
    
    /** Base class for all exceptions we throw.
     *
     * We use nothing but these internally. Of course, STL can throw others.
     */
    class JSON_API Exception : public std::exception {
    public:
      Exception(std::string const& msg);
      virtual ~Exception() throw();
      virtual char const* what() const throw();
    protected:
      std::string const msg_;
    };
    
    /** Exceptions which the user cannot easily avoid.
     *
     * E.g. out-of-memory (when we use malloc), stack-overflow, malicious input
     * 
     * \remark derived from Json::Exception
     */
    class JSON_API RuntimeError : public Exception {
    public:
      RuntimeError(std::string const& msg);
    };
    
    /** Exceptions thrown by JSON_ASSERT/JSON_FAIL macros.
     *
     * These are precondition-violations (user bugs) and internal errors (our bugs).
     * 
     * \remark derived from Json::Exception
     */
    class JSON_API LogicError : public Exception {
    public:
      LogicError(std::string const& msg);
    };
    
    /// used internally
    void throwRuntimeError(std::string const& msg);
    /// used internally
    void throwLogicError(std::string const& msg);
    
    /** \brief Type of the value held by a Value object.
     */
    enum ValueType {
      nullValue = 0, ///< 'null' value
      intValue,      ///< signed integer value
      uintValue,     ///< unsigned integer value
      realValue,     ///< double value
      stringValue,   ///< UTF-8 string value
      booleanValue,  ///< bool value
      arrayValue,    ///< array value (ordered list)
      objectValue    ///< object value (collection of name/value pairs).
    };
    
    enum CommentPlacement {
      commentBefore = 0,      ///< a comment placed on the line before a value
      commentAfterOnSameLine, ///< a comment just after a value on the same line
      commentAfter, ///< a comment on the line after a value (only make sense for
      /// root value)
      numberOfCommentPlacement
    };
    
    //# ifdef JSON_USE_CPPTL
    //   typedef CppTL::AnyEnumerator<const char *> EnumMemberNames;
    //   typedef CppTL::AnyEnumerator<const Value &> EnumValues;
    //# endif
    
    /** \brief Lightweight wrapper to tag static string.
     *
     * Value constructor and objectValue member assignement takes advantage of the
     * StaticString and avoid the cost of string duplication when storing the
     * string or the member name.
     *
     * Example of usage:
     * \code
     * Json::Value aValue( StaticString("some text") );
     * Json::Value object;
     * static const StaticString code("code");
     * object[code] = 1234;
     * \endcode
     */
    class JSON_API StaticString {
    public:
      explicit StaticString(const char* czstring) : c_str_(czstring) {}
    
      operator const char*() const { return c_str_; }
    
      const char* c_str() const { return c_str_; }
    
    private:
      const char* c_str_;
    };
    
    /** \brief Represents a <a HREF="http://www.json.org">JSON</a> value.
     *
     * This class is a discriminated union wrapper that can represents a:
     * - signed integer [range: Value::minInt - Value::maxInt]
     * - unsigned integer (range: 0 - Value::maxUInt)
     * - double
     * - UTF-8 string
     * - boolean
     * - 'null'
     * - an ordered list of Value
     * - collection of name/value pairs (javascript object)
     *
     * The type of the held value is represented by a #ValueType and
     * can be obtained using type().
     *
     * Values of an #objectValue or #arrayValue can be accessed using operator[]()
     * methods.
     * Non-const methods will automatically create the a #nullValue element
     * if it does not exist.
     * The sequence of an #arrayValue will be automatically resized and initialized
     * with #nullValue. resize() can be used to enlarge or truncate an #arrayValue.
     *
     * The get() methods can be used to obtain default value in the case the
     * required element does not exist.
     *
     * It is possible to iterate over the list of a #objectValue values using
     * the getMemberNames() method.
     *
     * \note #Value string-length fit in size_t, but keys must be < 2^30.
     * (The reason is an implementation detail.) A #CharReader will raise an
     * exception if a bound is exceeded to avoid security holes in your app,
     * but the Value API does *not* check bounds. That is the responsibility
     * of the caller.
     */
    class JSON_API Value {
      friend class ValueIteratorBase;
    public:
      typedef std::vector<std::string> Members;
      typedef ValueIterator iterator;
      typedef ValueConstIterator const_iterator;
      typedef Json::UInt UInt;
      typedef Json::Int Int;
    #if defined(JSON_HAS_INT64)
      typedef Json::UInt64 UInt64;
      typedef Json::Int64 Int64;
    #endif // defined(JSON_HAS_INT64)
      typedef Json::LargestInt LargestInt;
      typedef Json::LargestUInt LargestUInt;
      typedef Json::ArrayIndex ArrayIndex;
    
      static const Value& nullRef;
    #if !defined(__ARMEL__)
      /// \deprecated This exists for binary compatibility only. Use nullRef.
      static const Value null;
    #endif
      /// Minimum signed integer value that can be stored in a Json::Value.
      static const LargestInt minLargestInt;
      /// Maximum signed integer value that can be stored in a Json::Value.
      static const LargestInt maxLargestInt;
      /// Maximum unsigned integer value that can be stored in a Json::Value.
      static const LargestUInt maxLargestUInt;
    
      /// Minimum signed int value that can be stored in a Json::Value.
      static const Int minInt;
      /// Maximum signed int value that can be stored in a Json::Value.
      static const Int maxInt;
      /// Maximum unsigned int value that can be stored in a Json::Value.
      static const UInt maxUInt;
    
    #if defined(JSON_HAS_INT64)
      /// Minimum signed 64 bits int value that can be stored in a Json::Value.
      static const Int64 minInt64;
      /// Maximum signed 64 bits int value that can be stored in a Json::Value.
      static const Int64 maxInt64;
      /// Maximum unsigned 64 bits int value that can be stored in a Json::Value.
      static const UInt64 maxUInt64;
    #endif // defined(JSON_HAS_INT64)
    
    private:
    #ifndef JSONCPP_DOC_EXCLUDE_IMPLEMENTATION
      class CZString {
      public:
        enum DuplicationPolicy {
          noDuplication = 0,
          duplicate,
          duplicateOnCopy
        };
        CZString(ArrayIndex index);
        CZString(char const* str, unsigned length, DuplicationPolicy allocate);
        CZString(CZString const& other);
        ~CZString();
        CZString& operator=(CZString other);
        bool operator<(CZString const& other) const;
        bool operator==(CZString const& other) const;
        ArrayIndex index() const;
        //const char* c_str() const; ///< \deprecated
        char const* data() const;
        unsigned length() const;
        bool isStaticString() const;
    
      private:
        void swap(CZString& other);
    
        struct StringStorage {
          unsigned policy_: 2;
          unsigned length_: 30; // 1GB max
        };
    
        char const* cstr_;  // actually, a prefixed string, unless policy is noDup
        union {
          ArrayIndex index_;
          StringStorage storage_;
        };
      };
    
    public:
    #ifndef JSON_USE_CPPTL_SMALLMAP
      typedef std::map<CZString, Value> ObjectValues;
    #else
      typedef CppTL::SmallMap<CZString, Value> ObjectValues;
    #endif // ifndef JSON_USE_CPPTL_SMALLMAP
    #endif // ifndef JSONCPP_DOC_EXCLUDE_IMPLEMENTATION
    
    public:
      /** \brief Create a default Value of the given type.
    
        This is a very useful constructor.
        To create an empty array, pass arrayValue.
        To create an empty object, pass objectValue.
        Another Value can then be set to this one by assignment.
    This is useful since clear() and resize() will not alter types.
    
        Examples:
    \code
    Json::Value null_value; // null
    Json::Value arr_value(Json::arrayValue); // []
    Json::Value obj_value(Json::objectValue); // {}
    \endcode
      */
      Value(ValueType type = nullValue);
      Value(Int value);
      Value(UInt value);
    #if defined(JSON_HAS_INT64)
      Value(Int64 value);
      Value(UInt64 value);
    #endif // if defined(JSON_HAS_INT64)
      Value(double value);
      Value(const char* value); ///< Copy til first 0. (NULL causes to seg-fault.)
      Value(const char* begin, const char* end); ///< Copy all, incl zeroes.
      /** \brief Constructs a value from a static string.
    
       * Like other value string constructor but do not duplicate the string for
       * internal storage. The given string must remain alive after the call to this
       * constructor.
       * \note This works only for null-terminated strings. (We cannot change the
       *   size of this class, so we have nowhere to store the length,
       *   which might be computed later for various operations.)
       *
       * Example of usage:
       * \code
       * static StaticString foo("some text");
       * Json::Value aValue(foo);
       * \endcode
       */
      Value(const StaticString& value);
      Value(const std::string& value); ///< Copy data() til size(). Embedded zeroes too.
    #ifdef JSON_USE_CPPTL
      Value(const CppTL::ConstString& value);
    #endif
      Value(bool value);
      /// Deep copy.
      Value(const Value& other);
      ~Value();
    
      /// Deep copy, then swap(other).
      /// \note Over-write existing comments. To preserve comments, use #swapPayload().
      Value &operator=(const Value &other);
      /// Swap everything.
      void swap(Value& other);
      /// Swap values but leave comments and source offsets in place.
      void swapPayload(Value& other);
    
      ValueType type() const;
    
      /// Compare payload only, not comments etc.
      bool operator<(const Value& other) const;
      bool operator<=(const Value& other) const;
      bool operator>=(const Value& other) const;
      bool operator>(const Value& other) const;
      bool operator==(const Value& other) const;
      bool operator!=(const Value& other) const;
      int compare(const Value& other) const;
    
      const char* asCString() const; ///< Embedded zeroes could cause you trouble!
      std::string asString() const; ///< Embedded zeroes are possible.
      /** Get raw char* of string-value.
       *  \return false if !string. (Seg-fault if str or end are NULL.)
       */
      bool getString(
          char const** begin, char const** end) const;
    #ifdef JSON_USE_CPPTL
      CppTL::ConstString asConstString() const;
    #endif
      Int asInt() const;
      UInt asUInt() const;
    #if defined(JSON_HAS_INT64)
      Int64 asInt64() const;
      UInt64 asUInt64() const;
    #endif // if defined(JSON_HAS_INT64)
      LargestInt asLargestInt() const;
      LargestUInt asLargestUInt() const;
      float asFloat() const;
      double asDouble() const;
      bool asBool() const;
    
      bool isNull() const;
      bool isBool() const;
      bool isInt() const;
      bool isInt64() const;
      bool isUInt() const;
      bool isUInt64() const;
      bool isIntegral() const;
      bool isDouble() const;
      bool isNumeric() const;
      bool isString() const;
      bool isArray() const;
      bool isObject() const;
    
      bool isConvertibleTo(ValueType other) const;
    
      /// Number of values in array or object
      ArrayIndex size() const;
    
      /// \brief Return true if empty array, empty object, or null;
      /// otherwise, false.
      bool empty() const;
    
      /// Return isNull()
      bool operator!() const;
    
      /// Remove all object members and array elements.
      /// \pre type() is arrayValue, objectValue, or nullValue
      /// \post type() is unchanged
      void clear();
    
      /// Resize the array to size elements.
      /// New elements are initialized to null.
      /// May only be called on nullValue or arrayValue.
      /// \pre type() is arrayValue or nullValue
      /// \post type() is arrayValue
      void resize(ArrayIndex size);
    
      /// Access an array element (zero based index ).
      /// If the array contains less than index element, then null value are
      /// inserted
      /// in the array so that its size is index+1.
      /// (You may need to say 'value[0u]' to get your compiler to distinguish
      ///  this from the operator[] which takes a string.)
      Value& operator[](ArrayIndex index);
    
      /// Access an array element (zero based index ).
      /// If the array contains less than index element, then null value are
      /// inserted
      /// in the array so that its size is index+1.
      /// (You may need to say 'value[0u]' to get your compiler to distinguish
      ///  this from the operator[] which takes a string.)
      Value& operator[](int index);
    
      /// Access an array element (zero based index )
      /// (You may need to say 'value[0u]' to get your compiler to distinguish
      ///  this from the operator[] which takes a string.)
      const Value& operator[](ArrayIndex index) const;
    
      /// Access an array element (zero based index )
      /// (You may need to say 'value[0u]' to get your compiler to distinguish
      ///  this from the operator[] which takes a string.)
      const Value& operator[](int index) const;
    
      /// If the array contains at least index+1 elements, returns the element
      /// value,
      /// otherwise returns defaultValue.
      Value get(ArrayIndex index, const Value& defaultValue) const;
      /// Return true if index < size().
      bool isValidIndex(ArrayIndex index) const;
      /// \brief Append value to array at the end.
      ///
      /// Equivalent to jsonvalue[jsonvalue.size()] = value;
      Value& append(const Value& value);
    
      /// Access an object value by name, create a null member if it does not exist.
      /// \note Because of our implementation, keys are limited to 2^30 -1 chars.
      ///  Exceeding that will cause an exception.
      Value& operator[](const char* key);
      /// Access an object value by name, returns null if there is no member with
      /// that name.
      const Value& operator[](const char* key) const;
      /// Access an object value by name, create a null member if it does not exist.
      /// \param key may contain embedded nulls.
      Value& operator[](const std::string& key);
      /// Access an object value by name, returns null if there is no member with
      /// that name.
      /// \param key may contain embedded nulls.
      const Value& operator[](const std::string& key) const;
      /** \brief Access an object value by name, create a null member if it does not
       exist.
    
       * If the object has no entry for that name, then the member name used to store
       * the new entry is not duplicated.
       * Example of use:
       * \code
       * Json::Value object;
       * static const StaticString code("code");
       * object[code] = 1234;
       * \endcode
       */
      Value& operator[](const StaticString& key);
    #ifdef JSON_USE_CPPTL
      /// Access an object value by name, create a null member if it does not exist.
      Value& operator[](const CppTL::ConstString& key);
      /// Access an object value by name, returns null if there is no member with
      /// that name.
      const Value& operator[](const CppTL::ConstString& key) const;
    #endif
      /// Return the member named key if it exist, defaultValue otherwise.
      /// \note deep copy
      Value get(const char* key, const Value& defaultValue) const;
      /// Return the member named key if it exist, defaultValue otherwise.
      /// \note deep copy
      /// \note key may contain embedded nulls.
      Value get(const char* begin, const char* end, const Value& defaultValue) const;
      /// Return the member named key if it exist, defaultValue otherwise.
      /// \note deep copy
      /// \param key may contain embedded nulls.
      Value get(const std::string& key, const Value& defaultValue) const;
    #ifdef JSON_USE_CPPTL
      /// Return the member named key if it exist, defaultValue otherwise.
      /// \note deep copy
      Value get(const CppTL::ConstString& key, const Value& defaultValue) const;
    #endif
      /// Most general and efficient version of isMember()const, get()const,
      /// and operator[]const
      /// \note As stated elsewhere, behavior is undefined if (end-begin) >= 2^30
      Value const* find(char const* begin, char const* end) const;
      /// Most general and efficient version of object-mutators.
      /// \note As stated elsewhere, behavior is undefined if (end-begin) >= 2^30
      /// \return non-zero, but JSON_ASSERT if this is neither object nor nullValue.
      Value const* demand(char const* begin, char const* end);
      /// \brief Remove and return the named member.
      ///
      /// Do nothing if it did not exist.
      /// \return the removed Value, or null.
      /// \pre type() is objectValue or nullValue
      /// \post type() is unchanged
      /// \deprecated
      Value removeMember(const char* key);
      /// Same as removeMember(const char*)
      /// \param key may contain embedded nulls.
      /// \deprecated
      Value removeMember(const std::string& key);
      /// Same as removeMember(const char* begin, const char* end, Value* removed),
      /// but 'key' is null-terminated.
      bool removeMember(const char* key, Value* removed);
      /** \brief Remove the named map member.
    
          Update 'removed' iff removed.
          \param key may contain embedded nulls.
          \return true iff removed (no exceptions)
      */
      bool removeMember(std::string const& key, Value* removed);
      /// Same as removeMember(std::string const& key, Value* removed)
      bool removeMember(const char* begin, const char* end, Value* removed);
      /** \brief Remove the indexed array element.
    
          O(n) expensive operations.
          Update 'removed' iff removed.
          \return true iff removed (no exceptions)
      */
      bool removeIndex(ArrayIndex i, Value* removed);
    
      /// Return true if the object has a member named key.
      /// \note 'key' must be null-terminated.
      bool isMember(const char* key) const;
      /// Return true if the object has a member named key.
      /// \param key may contain embedded nulls.
      bool isMember(const std::string& key) const;
      /// Same as isMember(std::string const& key)const
      bool isMember(const char* begin, const char* end) const;
    #ifdef JSON_USE_CPPTL
      /// Return true if the object has a member named key.
      bool isMember(const CppTL::ConstString& key) const;
    #endif
    
      /// \brief Return a list of the member names.
      ///
      /// If null, return an empty list.
      /// \pre type() is objectValue or nullValue
      /// \post if type() was nullValue, it remains nullValue
      Members getMemberNames() const;
    
      //# ifdef JSON_USE_CPPTL
      //      EnumMemberNames enumMemberNames() const;
      //      EnumValues enumValues() const;
      //# endif
    
      /// \deprecated Always pass len.
      JSONCPP_DEPRECATED("Use setComment(std::string const&) instead.")
      void setComment(const char* comment, CommentPlacement placement);
      /// Comments must be //... or /* ... */
      void setComment(const char* comment, size_t len, CommentPlacement placement);
      /// Comments must be //... or /* ... */
      void setComment(const std::string& comment, CommentPlacement placement);
      bool hasComment(CommentPlacement placement) const;
      /// Include delimiters and embedded newlines.
      std::string getComment(CommentPlacement placement) const;
    
      std::string toStyledString() const;
    
      const_iterator begin() const;
      const_iterator end() const;
    
      iterator begin();
      iterator end();
    
    private:
      void initBasic(ValueType type, bool allocated = false);
    
      Value& resolveReference(const char* key);
      Value& resolveReference(const char* key, const char* end);
    
      struct CommentInfo {
        CommentInfo();
        ~CommentInfo();
    
        void setComment(const char* text, size_t len);
    
        char* comment_;
      };
    
      // struct MemberNamesTransform
      //{
        
      //   typedef const char *result_type;
      //   const char *operator()( const CZString &name ) const
      //   {
        
      //      return name.c_str();
      //   }
      //};
    
      union ValueHolder {
        LargestInt int_;
        LargestUInt uint_;
        double real_;
        bool bool_;
        char* string_;  // actually ptr to unsigned, followed by str, unless !allocated_
        ObjectValues* map_;
      } value_;
      ValueType type_ : 8;
      unsigned int allocated_ : 1; // Notes: if declared as bool, bitfield is useless.
                                   // If not allocated_, string_ must be null-terminated.
      CommentInfo* comments_;
    };
    
    /** \brief Experimental and untested: represents an element of the "path" to
     * access a node.
     */
    class JSON_API PathArgument {
    public:
      friend class Path;
    
      PathArgument();
      PathArgument(ArrayIndex index);
      PathArgument(const char* key);
      PathArgument(const std::string& key);
    
    private:
      enum Kind {
        kindNone = 0,
        kindIndex,
        kindKey
      };
      std::string key_;
      ArrayIndex index_;
      Kind kind_;
    };
    
    /** \brief Experimental and untested: represents a "path" to access a node.
     *
     * Syntax:
     * - "." => root node
     * - ".[n]" => elements at index 'n' of root node (an array value)
     * - ".name" => member named 'name' of root node (an object value)
     * - ".name1.name2.name3"
     * - ".[0][1][2].name1[3]"
     * - ".%" => member name is provided as parameter
     * - ".[%]" => index is provied as parameter
     */
    class JSON_API Path {
    public:
      Path(const std::string& path,
           const PathArgument& a1 = PathArgument(),
           const PathArgument& a2 = PathArgument(),
           const PathArgument& a3 = PathArgument(),
           const PathArgument& a4 = PathArgument(),
           const PathArgument& a5 = PathArgument());
    
      const Value& resolve(const Value& root) const;
      Value resolve(const Value& root, const Value& defaultValue) const;
      /// Creates the "path" to access the specified node and returns a reference on
      /// the node.
      Value& make(Value& root) const;
    
    private:
      typedef std::vector<const PathArgument*> InArgs;
      typedef std::vector<PathArgument> Args;
    
      void makePath(const std::string& path, const InArgs& in);
      void addPathInArg(const std::string& path,
                        const InArgs& in,
                        InArgs::const_iterator& itInArg,
                        PathArgument::Kind kind);
      void invalidPath(const std::string& path, int location);
    
      Args args_;
    };
    
    /** \brief base class for Value iterators.
     *
     */
    class JSON_API ValueIteratorBase {
    public:
      typedef std::bidirectional_iterator_tag iterator_category;
      typedef unsigned int size_t;
      typedef int difference_type;
      typedef ValueIteratorBase SelfType;
    
      bool operator==(const SelfType& other) const { return isEqual(other); }
    
      bool operator!=(const SelfType& other) const { return !isEqual(other); }
    
      difference_type operator-(const SelfType& other) const {
        return other.computeDistance(*this);
      }
    
      /// Return either the index or the member name of the referenced value as a
      /// Value.
      Value key() const;
    
      /// Return the index of the referenced Value, or -1 if it is not an arrayValue.
      UInt index() const;
    
      /// Return the member name of the referenced Value, or "" if it is not an
      /// objectValue.
      /// \note Avoid `c_str()` on result, as embedded zeroes are possible.
      std::string name() const;
    
      /// Return the member name of the referenced Value. "" if it is not an
      /// objectValue.
      /// \deprecated This cannot be used for UTF-8 strings, since there can be embedded nulls.
      JSONCPP_DEPRECATED("Use `key = name();` instead.")
      char const* memberName() const;
      /// Return the member name of the referenced Value, or NULL if it is not an
      /// objectValue.
      /// \note Better version than memberName(). Allows embedded nulls.
      char const* memberName(char const** end) const;
    
    protected:
      Value& deref() const;
    
      void increment();
    
      void decrement();
    
      difference_type computeDistance(const SelfType& other) const;
    
      bool isEqual(const SelfType& other) const;
    
      void copy(const SelfType& other);
    
    private:
      Value::ObjectValues::iterator current_;
      // Indicates that iterator is for a null value.
      bool isNull_;
    
    public:
      // For some reason, BORLAND needs these at the end, rather
      // than earlier. No idea why.
      ValueIteratorBase();
      explicit ValueIteratorBase(const Value::ObjectValues::iterator& current);
    };
    
    /** \brief const iterator for object and array value.
     *
     */
    class JSON_API ValueConstIterator : public ValueIteratorBase {
      friend class Value;
    
    public:
      typedef const Value value_type;
      //typedef unsigned int size_t;
      //typedef int difference_type;
      typedef const Value& reference;
      typedef const Value* pointer;
      typedef ValueConstIterator SelfType;
    
      ValueConstIterator();
    
    private:
    /*! \internal Use by Value to create an iterator.
     */
      explicit ValueConstIterator(const Value::ObjectValues::iterator& current);
    public:
      SelfType& operator=(const ValueIteratorBase& other);
    
      SelfType operator++(int) {
        SelfType temp(*this);
        ++*this;
        return temp;
      }
    
      SelfType operator--(int) {
        
        SelfType temp(*this);
        --*this;
        return temp;
      }
    
      SelfType& operator--() {
        
        decrement();
        return *this;
      }
    
      SelfType& operator++() {
        increment();
        return *this;
      }
    
      reference operator*() const { return deref(); }
    
      pointer operator->() const { return &deref(); }
    };
    
    /** \brief Iterator for object and array value.
     */
    class JSON_API ValueIterator : public ValueIteratorBase {
      friend class Value;
    
    public:
      typedef Value value_type;
      typedef unsigned int size_t;
      typedef int difference_type;
      typedef Value& reference;
      typedef Value* pointer;
      typedef ValueIterator SelfType;
    
      ValueIterator();
      ValueIterator(const ValueConstIterator& other);
      ValueIterator(const ValueIterator& other);
    
    private:
    /*! \internal Use by Value to create an iterator.
     */
      explicit ValueIterator(const Value::ObjectValues::iterator& current);
    public:
      SelfType& operator=(const SelfType& other);
    
      SelfType operator++(int) {
        SelfType temp(*this);
        ++*this;
        return temp;
      }
    
      SelfType operator--(int) {
        
        SelfType temp(*this);
        --*this;
        return temp;
      }
    
      SelfType& operator--() {
        
        decrement();
        return *this;
      }
    
      SelfType& operator++() {
        increment();
        return *this;
      }
    
      reference operator*() const { return deref(); }
    
      pointer operator->() const { return &deref(); }
    };
    
    } // namespace Json
    
    
    namespace std {
    /// Specialize std::swap() for Json::Value.
    template<>
    inline void swap(Json::Value& a, Json::Value& b) { a.swap(b); }
    }
    
    
    #if defined(JSONCPP_DISABLE_DLL_INTERFACE_WARNING)
    #pragma warning(pop)
    #endif // if defined(JSONCPP_DISABLE_DLL_INTERFACE_WARNING)
    
    #endif // CPPTL_JSON_H_INCLUDED
    
    // //
    // End of content of file: include/json/value.h
    // //
    
    
    
    
    
    
    // //
    // Beginning of content of file: include/json/reader.h
    // //
    
    // Copyright 2007-2010 Baptiste Lepilleur
    // Distributed under MIT license, or public domain if desired and
    // recognized in your jurisdiction.
    // See file LICENSE for detail or copy at http://jsoncpp.sourceforge.net/LICENSE
    
    #ifndef CPPTL_JSON_READER_H_INCLUDED
    #define CPPTL_JSON_READER_H_INCLUDED
    
    #if !defined(JSON_IS_AMALGAMATION)
    #include "features.h"
    #include "value.h"
    #endif // if !defined(JSON_IS_AMALGAMATION)
    #include <deque>
    #include <iosfwd>
    #include <stack>
    #include <string>
    #include <istream>
    
    // Disable warning C4251: <data member>: <type> needs to have dll-interface to
    // be used by...
    #if defined(JSONCPP_DISABLE_DLL_INTERFACE_WARNING)
    #pragma warning(push)
    #pragma warning(disable : 4251)
    #endif // if defined(JSONCPP_DISABLE_DLL_INTERFACE_WARNING)
    
    namespace Json {
    
    /** \brief Unserialize a <a HREF="http://www.json.org">JSON</a> document into a
     *Value.
     *
     * \deprecated Use CharReader and CharReaderBuilder.
     */
    class JSON_API Reader {
    public:
      typedef char Char;
      typedef const Char* Location;
    
      /** \brief Constructs a Reader allowing all features
       * for parsing.
       */
      Reader();
    
      /** \brief Constructs a Reader allowing the specified feature set
       * for parsing.
       */
      Reader(const Features& features);
    
      /** \brief Read a Value from a <a HREF="http://www.json.org">JSON</a>
       * document.
       * \param document UTF-8 encoded string containing the document to read.
       * \param root [out] Contains the root value of the document if it was
       *             successfully parsed.
       * \param collectComments \c true to collect comment and allow writing them
       * back during
       *                        serialization, \c false to discard comments.
       *                        This parameter is ignored if
       * Features::allowComments_
       *                        is \c false.
       * \return \c true if the document was successfully parsed, \c false if an
       * error occurred.
       */
      bool
      parse(const std::string& document, Value& root, bool collectComments = true);
    
      /** \brief Read a Value from a <a HREF="http://www.json.org">JSON</a>
       document.
       * \param beginDoc Pointer on the beginning of the UTF-8 encoded string of the
       document to read.
       * \param endDoc Pointer on the end of the UTF-8 encoded string of the
       document to read.
       *               Must be >= beginDoc.
       * \param root [out] Contains the root value of the document if it was
       *             successfully parsed.
       * \param collectComments \c true to collect comment and allow writing them
       back during
       *                        serialization, \c false to discard comments.
       *                        This parameter is ignored if
       Features::allowComments_
       *                        is \c false.
       * \return \c true if the document was successfully parsed, \c false if an
       error occurred.
       */
      bool parse(const char* beginDoc,
                 const char* endDoc,
                 Value& root,
                 bool collectComments = true);
    
      /// \brief Parse from input stream.
      /// \see Json::operator>>(std::istream&, Json::Value&).
      bool parse(std::istream& is, Value& root, bool collectComments = true);
    
      /** \brief Returns a user friendly string that list errors in the parsed
       * document.
       * \return Formatted error message with the list of errors with their location
       * in
       *         the parsed document. An empty string is returned if no error
       * occurred
       *         during parsing.
       * \deprecated Use getFormattedErrorMessages() instead (typo fix).
       */
      JSONCPP_DEPRECATED("Use getFormattedErrorMessages() instead.")
      std::string getFormatedErrorMessages() const;
    
      /** \brief Returns a user friendly string that list errors in the parsed
       * document.
       * \return Formatted error message with the list of errors with their location
       * in
       *         the parsed document. An empty string is returned if no error
       * occurred
       *         during parsing.
       */
      std::string getFormattedErrorMessages() const;
    
    private:
      enum TokenType {
        tokenEndOfStream = 0,
        tokenObjectBegin,
        tokenObjectEnd,
        tokenArrayBegin,
        tokenArrayEnd,
        tokenString,
        tokenNumber,
        tokenTrue,
        tokenFalse,
        tokenNull,
        tokenArraySeparator,
        tokenMemberSeparator,
        tokenComment,
        tokenError
      };
    
      class Token {
      public:
        TokenType type_;
        Location start_;
        Location end_;
      };
    
      class ErrorInfo {
      public:
        Token token_;
        std::string message_;
        Location extra_;
      };
    
      typedef std::deque<ErrorInfo> Errors;
    
      bool readToken(Token& token);
      void skipSpaces();
      bool match(Location pattern, int patternLength);
      bool readComment();
      bool readCStyleComment();
      bool readCppStyleComment();
      bool readString();
      void readNumber();
      bool readValue();
      bool readObject(Token& token);
      bool readArray(Token& token);
      bool decodeNumber(Token& token);
      bool decodeNumber(Token& token, Value& decoded);
      bool decodeString(Token& token);
      bool decodeString(Token& token, std::string& decoded);
      bool decodeDouble(Token& token);
      bool decodeDouble(Token& token, Value& decoded);
      bool decodeUnicodeCodePoint(Token& token,
                                  Location& current,
                                  Location end,
                                  unsigned int& unicode);
      bool decodeUnicodeEscapeSequence(Token& token,
                                       Location& current,
                                       Location end,
                                       unsigned int& unicode);
      bool addError(const std::string& message, Token& token, Location extra = 0);
      bool recoverFromError(TokenType skipUntilToken);
      bool addErrorAndRecover(const std::string& message,
                              Token& token,
                              TokenType skipUntilToken);
      void skipUntilSpace();
      Value& currentValue();
      Char getNextChar();
      void
      getLocationLineAndColumn(Location location, int& line, int& column) const;
      std::string getLocationLineAndColumn(Location location) const;
      void addComment(Location begin, Location end, CommentPlacement placement);
      void skipCommentTokens(Token& token);
    
      typedef std::stack<Value*> Nodes;
      Nodes nodes_;
      Errors errors_;
      std::string document_;
      Location begin_;
      Location end_;
      Location current_;
      Location lastValueEnd_;
      Value* lastValue_;
      std::string commentsBefore_;
      Features features_;
      bool collectComments_;
    };  // Reader
    
    /** Interface for reading JSON from a char array.
     */
    class JSON_API CharReader {
    public:
      virtual ~CharReader() {}
      /** \brief Read a Value from a <a HREF="http://www.json.org">JSON</a>
       document.
       * The document must be a UTF-8 encoded string containing the document to read.
       *
       * \param beginDoc Pointer on the beginning of the UTF-8 encoded string of the
       document to read.
       * \param endDoc Pointer on the end of the UTF-8 encoded string of the
       document to read.
       *        Must be >= beginDoc.
       * \param root [out] Contains the root value of the document if it was
       *             successfully parsed.
       * \param errs [out] Formatted error messages (if not NULL)
       *        a user friendly string that lists errors in the parsed
       * document.
       * \return \c true if the document was successfully parsed, \c false if an
       error occurred.
       */
      virtual bool parse(
          char const* beginDoc, char const* endDoc,
          Value* root, std::string* errs) = 0;
    
      class Factory {
      public:
        virtual ~Factory() {}
        /** \brief Allocate a CharReader via operator new().
         * \throw std::exception if something goes wrong (e.g. invalid settings)
         */
        virtual CharReader* newCharReader() const = 0;
      };  // Factory
    };  // CharReader
    
    /** \brief Build a CharReader implementation.
    
    Usage:
    \code
      using namespace Json;
      CharReaderBuilder builder;
      builder["collectComments"] = false;
      Value value;
      std::string errs;
      bool ok = parseFromStream(builder, std::cin, &value, &errs);
    \endcode
    */
    class JSON_API CharReaderBuilder : public CharReader::Factory {
    public:
      // Note: We use a Json::Value so that we can add data-members to this class
      // without a major version bump.
      /** Configuration of this builder.
        These are case-sensitive.
        Available settings (case-sensitive):
        - `"collectComments": false or true`
          - true to collect comment and allow writing them
            back during serialization, false to discard comments.
            This parameter is ignored if allowComments is false.
        - `"allowComments": false or true`
          - true if comments are allowed.
        - `"strictRoot": false or true`
          - true if root must be either an array or an object value
        - `"allowDroppedNullPlaceholders": false or true`
          - true if dropped null placeholders are allowed. (See StreamWriterBuilder.)
        - `"allowNumericKeys": false or true`
          - true if numeric object keys are allowed.
        - `"allowSingleQuotes": false or true`
          - true if '' are allowed for strings (both keys and values)
        - `"stackLimit": integer`
          - Exceeding stackLimit (recursive depth of `readValue()`) will
            cause an exception.
          - This is a security issue (seg-faults caused by deeply nested JSON),
            so the default is low.
        - `"failIfExtra": false or true`
          - If true, `parse()` returns false when extra non-whitespace trails
            the JSON value in the input string.
        - `"rejectDupKeys": false or true`
          - If true, `parse()` returns false when a key is duplicated within an object.
    
        You can examine 'settings_` yourself
        to see the defaults. You can also write and read them just like any
        JSON Value.
        \sa setDefaults()
        */
      Json::Value settings_;
    
      CharReaderBuilder();
      virtual ~CharReaderBuilder();
    
      virtual CharReader* newCharReader() const;
    
      /** \return true if 'settings' are legal and consistent;
       *   otherwise, indicate bad settings via 'invalid'.
       */
      bool validate(Json::Value* invalid) const;
    
      /** A simple way to update a specific setting.
       */
      Value& operator[](std::string key);
    
      /** Called by ctor, but you can use this to reset settings_.
       * \pre 'settings' != NULL (but Json::null is fine)
       * \remark Defaults:
       * \snippet src/lib_json/json_reader.cpp CharReaderBuilderDefaults
       */
      static void setDefaults(Json::Value* settings);
      /** Same as old Features::strictMode().
       * \pre 'settings' != NULL (but Json::null is fine)
       * \remark Defaults:
       * \snippet src/lib_json/json_reader.cpp CharReaderBuilderStrictMode
       */
      static void strictMode(Json::Value* settings);
    };
    
    /** Consume entire stream and use its begin/end.
      * Someday we might have a real StreamReader, but for now this
      * is convenient.
      */
    bool JSON_API parseFromStream(
        CharReader::Factory const&,
        std::istream&,
        Value* root, std::string* errs);
    
    /** \brief Read from 'sin' into 'root'.
    
     Always keep comments from the input JSON.
    
     This can be used to read a file into a particular sub-object.
     For example:
     \code
     Json::Value root;
     cin >> root["dir"]["file"];
     cout << root;
     \endcode
     Result:
     \verbatim
     {
     "dir": {
         "file": {
         // The input stream JSON would be nested here.
         }
     }
     }
     \endverbatim
     \throw std::exception on parse error.
     \see Json::operator<<()
    */
    JSON_API std::istream& operator>>(std::istream&, Value&);
    
    } // namespace Json
    
    #if defined(JSONCPP_DISABLE_DLL_INTERFACE_WARNING)
    #pragma warning(pop)
    #endif // if defined(JSONCPP_DISABLE_DLL_INTERFACE_WARNING)
    
    #endif // CPPTL_JSON_READER_H_INCLUDED
    
    // //
    // End of content of file: include/json/reader.h
    // //
    
    
    
    
    
    
    // //
    // Beginning of content of file: include/json/writer.h
    // //
    
    // Copyright 2007-2010 Baptiste Lepilleur
    // Distributed under MIT license, or public domain if desired and
    // recognized in your jurisdiction.
    // See file LICENSE for detail or copy at http://jsoncpp.sourceforge.net/LICENSE
    
    #ifndef JSON_WRITER_H_INCLUDED
    #define JSON_WRITER_H_INCLUDED
    
    #if !defined(JSON_IS_AMALGAMATION)
    #include "value.h"
    #endif // if !defined(JSON_IS_AMALGAMATION)
    #include <vector>
    #include <string>
    #include <ostream>
    
    // Disable warning C4251: <data member>: <type> needs to have dll-interface to
    // be used by...
    #if defined(JSONCPP_DISABLE_DLL_INTERFACE_WARNING)
    #pragma warning(push)
    #pragma warning(disable : 4251)
    #endif // if defined(JSONCPP_DISABLE_DLL_INTERFACE_WARNING)
    
    namespace Json {
    
    class Value;
    
    /**
    
    Usage:
    \code
      using namespace Json;
      void writeToStdout(StreamWriter::Factory const& factory, Value const& value) {
        std::unique_ptr<StreamWriter> const writer(
          factory.newStreamWriter());
        writer->write(value, &std::cout);
        std::cout << std::endl;  // add lf and flush
      }
    \endcode
    */
    class JSON_API StreamWriter {
    protected:
      std::ostream* sout_;  // not owned; will not delete
    public:
      StreamWriter();
      virtual ~StreamWriter();
      /** Write Value into document as configured in sub-class.
          Do not take ownership of sout, but maintain a reference during function.
          \pre sout != NULL
          \return zero on success (For now, we always return zero, so check the stream instead.)
          \throw std::exception possibly, depending on configuration
       */
      virtual int write(Value const& root, std::ostream* sout) = 0;
    
      /** \brief A simple abstract factory.
       */
      class JSON_API Factory {
      public:
        virtual ~Factory();
        /** \brief Allocate a CharReader via operator new().
         * \throw std::exception if something goes wrong (e.g. invalid settings)
         */
        virtual StreamWriter* newStreamWriter() const = 0;
      };  // Factory
    };  // StreamWriter
    
    /** \brief Write into stringstream, then return string, for convenience.
     * A StreamWriter will be created from the factory, used, and then deleted.
     */
    std::string JSON_API writeString(StreamWriter::Factory const& factory, Value const& root);
    
    
    /** \brief Build a StreamWriter implementation.
    
    Usage:
    \code
      using namespace Json;
      Value value = ...;
      StreamWriterBuilder builder;
      builder["commentStyle"] = "None";
      builder["indentation"] = "   ";  // or whatever you like
      std::unique_ptr<Json::StreamWriter> writer(
          builder.newStreamWriter());
      writer->write(value, &std::cout);
      std::cout << std::endl;  // add lf and flush
    \endcode
    */
    class JSON_API StreamWriterBuilder : public StreamWriter::Factory {
    public:
      // Note: We use a Json::Value so that we can add data-members to this class
      // without a major version bump.
      /** Configuration of this builder.
        Available settings (case-sensitive):
        - "commentStyle": "None" or "All"
        - "indentation":  "<anything>"
        - "enableYAMLCompatibility": false or true
          - slightly change the whitespace around colons
        - "dropNullPlaceholders": false or true
          - Drop the "null" string from the writer's output for nullValues.
            Strictly speaking, this is not valid JSON. But when the output is being
            fed to a browser's Javascript, it makes for smaller output and the
            browser can handle the output just fine.
    
        You can examine 'settings_` yourself
        to see the defaults. You can also write and read them just like any
        JSON Value.
        \sa setDefaults()
        */
      Json::Value settings_;
    
      StreamWriterBuilder();
      virtual ~StreamWriterBuilder();
    
      /**
       * \throw std::exception if something goes wrong (e.g. invalid settings)
       */
      virtual StreamWriter* newStreamWriter() const;
    
      /** \return true if 'settings' are legal and consistent;
       *   otherwise, indicate bad settings via 'invalid'.
       */
      bool validate(Json::Value* invalid) const;
      /** A simple way to update a specific setting.
       */
      Value& operator[](std::string key);
    
      /** Called by ctor, but you can use this to reset settings_.
       * \pre 'settings' != NULL (but Json::null is fine)
       * \remark Defaults:
       * \snippet src/lib_json/json_writer.cpp StreamWriterBuilderDefaults
       */
      static void setDefaults(Json::Value* settings);
    };
    
    /** \brief Abstract class for writers.
     * \deprecated Use StreamWriter. (And really, this is an implementation detail.)
     */
    class JSON_API Writer {
    public:
      virtual ~Writer();
    
      virtual std::string write(const Value& root) = 0;
    };
    
    /** \brief Outputs a Value in <a HREF="http://www.json.org">JSON</a> format
     *without formatting (not human friendly).
     *
     * The JSON document is written in a single line. It is not intended for 'human'
     *consumption,
     * but may be usefull to support feature such as RPC where bandwith is limited.
     * \sa Reader, Value
     * \deprecated Use StreamWriterBuilder.
     */
    class JSON_API FastWriter : public Writer {
    
    public:
      FastWriter();
      virtual ~FastWriter() {}
    
      void enableYAMLCompatibility();
    
    public: // overridden from Writer
      virtual std::string write(const Value& root);
    
    private:
      void writeValue(const Value& value);
    
      std::string document_;
      bool yamlCompatiblityEnabled_;
    };
    
    /** \brief Writes a Value in <a HREF="http://www.json.org">JSON</a> format in a
     *human friendly way.
     *
     * The rules for line break and indent are as follow:
     * - Object value:
     *     - if empty then print {} without indent and line break
     *     - if not empty the print '{', line break & indent, print one value per
     *line
     *       and then unindent and line break and print '}'.
     * - Array value:
     *     - if empty then print [] without indent and line break
     *     - if the array contains no object value, empty array or some other value
     *types,
     *       and all the values fit on one lines, then print the array on a single
     *line.
     *     - otherwise, it the values do not fit on one line, or the array contains
     *       object or non empty array, then print one value per line.
     *
     * If the Value have comments then they are outputed according to their
     *#CommentPlacement.
     *
     * \sa Reader, Value, Value::setComment()
     * \deprecated Use StreamWriterBuilder.
     */
    class JSON_API StyledWriter : public Writer {
    public:
      StyledWriter();
      virtual ~StyledWriter() {}
    
    public: // overridden from Writer
      /** \brief Serialize a Value in <a HREF="http://www.json.org">JSON</a> format.
       * \param root Value to serialize.
       * \return String containing the JSON document that represents the root value.
       */
      virtual std::string write(const Value& root);
    
    private:
      void writeValue(const Value& value);
      void writeArrayValue(const Value& value);
      bool isMultineArray(const Value& value);
      void pushValue(const std::string& value);
      void writeIndent();
      void writeWithIndent(const std::string& value);
      void indent();
      void unindent();
      void writeCommentBeforeValue(const Value& root);
      void writeCommentAfterValueOnSameLine(const Value& root);
      bool hasCommentForValue(const Value& value);
      static std::string normalizeEOL(const std::string& text);
    
      typedef std::vector<std::string> ChildValues;
    
      ChildValues childValues_;
      std::string document_;
      std::string indentString_;
      int rightMargin_;
      int indentSize_;
      bool addChildValues_;
    };
    
    /** \brief Writes a Value in <a HREF="http://www.json.org">JSON</a> format in a
     human friendly way,
         to a stream rather than to a string.
     *
     * The rules for line break and indent are as follow:
     * - Object value:
     *     - if empty then print {} without indent and line break
     *     - if not empty the print '{', line break & indent, print one value per
     line
     *       and then unindent and line break and print '}'.
     * - Array value:
     *     - if empty then print [] without indent and line break
     *     - if the array contains no object value, empty array or some other value
     types,
     *       and all the values fit on one lines, then print the array on a single
     line.
     *     - otherwise, it the values do not fit on one line, or the array contains
     *       object or non empty array, then print one value per line.
     *
     * If the Value have comments then they are outputed according to their
     #CommentPlacement.
     *
     * \param indentation Each level will be indented by this amount extra.
     * \sa Reader, Value, Value::setComment()
     * \deprecated Use StreamWriterBuilder.
     */
    class JSON_API StyledStreamWriter {
    public:
      StyledStreamWriter(std::string indentation = "\t");
      ~StyledStreamWriter() {}
    
    public:
      /** \brief Serialize a Value in <a HREF="http://www.json.org">JSON</a> format.
       * \param out Stream to write to. (Can be ostringstream, e.g.)
       * \param root Value to serialize.
       * \note There is no point in deriving from Writer, since write() should not
       * return a value.
       */
      void write(std::ostream& out, const Value& root);
    
    private:
      void writeValue(const Value& value);
      void writeArrayValue(const Value& value);
      bool isMultineArray(const Value& value);
      void pushValue(const std::string& value);
      void writeIndent();
      void writeWithIndent(const std::string& value);
      void indent();
      void unindent();
      void writeCommentBeforeValue(const Value& root);
      void writeCommentAfterValueOnSameLine(const Value& root);
      bool hasCommentForValue(const Value& value);
      static std::string normalizeEOL(const std::string& text);
    
      typedef std::vector<std::string> ChildValues;
    
      ChildValues childValues_;
      std::ostream* document_;
      std::string indentString_;
      int rightMargin_;
      std::string indentation_;
      bool addChildValues_ : 1;
      bool indented_ : 1;
    };
    
    #if defined(JSON_HAS_INT64)
    std::string JSON_API valueToString(Int value);
    std::string JSON_API valueToString(UInt value);
    #endif // if defined(JSON_HAS_INT64)
    std::string JSON_API valueToString(LargestInt value);
    std::string JSON_API valueToString(LargestUInt value);
    std::string JSON_API valueToString(double value);
    std::string JSON_API valueToString(bool value);
    std::string JSON_API valueToQuotedString(const char* value);
    
    /// \brief Output using the StyledStreamWriter.
    /// \see Json::operator>>()
    JSON_API std::ostream& operator<<(std::ostream&, const Value& root);
    
    } // namespace Json
    
    #if defined(JSONCPP_DISABLE_DLL_INTERFACE_WARNING)
    #pragma warning(pop)
    #endif // if defined(JSONCPP_DISABLE_DLL_INTERFACE_WARNING)
    
    #endif // JSON_WRITER_H_INCLUDED
    
    // //
    // End of content of file: include/json/writer.h
    // //
    
    
    
    
    
    
    // //
    // Beginning of content of file: include/json/assertions.h
    // //
    
    // Copyright 2007-2010 Baptiste Lepilleur
    // Distributed under MIT license, or public domain if desired and
    // recognized in your jurisdiction.
    // See file LICENSE for detail or copy at http://jsoncpp.sourceforge.net/LICENSE
    
    #ifndef CPPTL_JSON_ASSERTIONS_H_INCLUDED
    #define CPPTL_JSON_ASSERTIONS_H_INCLUDED
    
    #include <stdlib.h>
    #include <sstream>
    
    #if !defined(JSON_IS_AMALGAMATION)
    #include "config.h"
    #endif // if !defined(JSON_IS_AMALGAMATION)
    
    /** It should not be possible for a maliciously designed file to
     *  cause an abort() or seg-fault, so these macros are used only
     *  for pre-condition violations and internal logic errors.
     */
    #if JSON_USE_EXCEPTION
    
    // @todo <= add detail about condition in exception
    # define JSON_ASSERT(condition)                                                \
      {
       if (!(condition)) {Json::throwLogicError( "assert json failed" );}}
    
    # define JSON_FAIL_MESSAGE(message)                                            \
      {                                                                            \
        std::ostringstream oss; oss << message;                                    \
        Json::throwLogicError(oss.str());                                          \
        abort();                                                                   \
      }
    
    #else // JSON_USE_EXCEPTION
    
    # define JSON_ASSERT(condition) assert(condition)
    
    // The call to assert() will show the failure message in debug builds. In
    // release builds we abort, for a core-dump or debugger.
    # define JSON_FAIL_MESSAGE(message)                                            \
      {                                                                            \
        std::ostringstream oss; oss << message;                                    \
        assert(false && oss.str().c_str());                                        \
        abort();                                                                   \
      }
    
    
    #endif
    
    #define JSON_ASSERT_MESSAGE(condition, message)                                \
      if (!(condition)) {                                                          \
        JSON_FAIL_MESSAGE(message);                                                \
      }
    
    #endif // CPPTL_JSON_ASSERTIONS_H_INCLUDED
    
    // //
    // End of content of file: include/json/assertions.h
    // //
    
    
    
    
    
    #endif //ifndef JSON_AMALGATED_H_INCLUDED

### jsoncpp.cpp ###

/// Json-cpp amalgated source (http://jsoncpp.sourceforge.net/).
    /// It is intended to be used with #include "json/json.h"
    
    // //
    // Beginning of content of file: LICENSE
    // //
    
    /*
    The JsonCpp library's source code, including accompanying documentation, 
    tests and demonstration applications, are licensed under the following
    conditions...
    
    The author (Baptiste Lepilleur) explicitly disclaims copyright in all 
    jurisdictions which recognize such a disclaimer. In such jurisdictions, 
    this software is released into the Public Domain.
    
    In jurisdictions which do not recognize Public Domain property (e.g. Germany as of
    2010), this software is Copyright (c) 2007-2010 by Baptiste Lepilleur, and is
    released under the terms of the MIT License (see below).
    
    In jurisdictions which recognize Public Domain property, the user of this 
    software may choose to accept it either as 1) Public Domain, 2) under the 
    conditions of the MIT License (see below), or 3) under the terms of dual 
    Public Domain/MIT License conditions described here, as they choose.
    
    The MIT License is about as close to Public Domain as a license can get, and is
    described in clear, concise terms at:
    
       http://en.wikipedia.org/wiki/MIT_License
       
    The full text of the MIT License follows:
    
    ========================================================================
    Copyright (c) 2007-2010 Baptiste Lepilleur
    
    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.
    ========================================================================
    (END LICENSE TEXT)
    
    The MIT license is compatible with both the GPL and commercial
    software, affording one all of the rights of Public Domain with the
    minor nuisance of being required to keep the above copyright notice
    and license text in the source code. Note also that by accepting the
    Public Domain "license" you can re-license your copy using whatever
    license you like.
    
    */
    
    // //
    // End of content of file: LICENSE
    // //
    
    
    
    
    
    
    #include "json.h"
    
    #ifndef JSON_IS_AMALGAMATION
    #error "Compile with -I PATH_TO_JSON_DIRECTORY"
    #endif
    
    
    // //
    // Beginning of content of file: src/lib_json/json_tool.h
    // //
    
    // Copyright 2007-2010 Baptiste Lepilleur
    // Distributed under MIT license, or public domain if desired and
    // recognized in your jurisdiction.
    // See file LICENSE for detail or copy at http://jsoncpp.sourceforge.net/LICENSE
    
    #ifndef LIB_JSONCPP_JSON_TOOL_H_INCLUDED
    #define LIB_JSONCPP_JSON_TOOL_H_INCLUDED
    
    /* This header provides common string manipulation support, such as UTF-8,
     * portable conversion from/to string...
     *
     * It is an internal header that must not be exposed.
     */
    
    namespace Json {
    
    /// Converts a unicode code-point to UTF-8.
    static inline std::string codePointToUTF8(unsigned int cp) {
      std::string result;
    
      // based on description from http://en.wikipedia.org/wiki/UTF-8
    
      if (cp <= 0x7f) {
        result.resize(1);
        result[0] = static_cast<char>(cp);
      } else if (cp <= 0x7FF) {
        result.resize(2);
        result[1] = static_cast<char>(0x80 | (0x3f & cp));
        result[0] = static_cast<char>(0xC0 | (0x1f & (cp >> 6)));
      } else if (cp <= 0xFFFF) {
        result.resize(3);
        result[2] = static_cast<char>(0x80 | (0x3f & cp));
        result[1] = static_cast<char>(0x80 | (0x3f & (cp >> 6)));
        result[0] = static_cast<char>(0xE0 | (0xf & (cp >> 12)));
      } else if (cp <= 0x10FFFF) {
        result.resize(4);
        result[3] = static_cast<char>(0x80 | (0x3f & cp));
        result[2] = static_cast<char>(0x80 | (0x3f & (cp >> 6)));
        result[1] = static_cast<char>(0x80 | (0x3f & (cp >> 12)));
        result[0] = static_cast<char>(0xF0 | (0x7 & (cp >> 18)));
      }
    
      return result;
    }
    
    /// Returns true if ch is a control character (in range [1,31]).
    static inline bool isControlCharacter(char ch) { return ch > 0 && ch <= 0x1F; }
    
    enum {
      /// Constant that specify the size of the buffer that must be passed to
      /// uintToString.
      uintToStringBufferSize = 3 * sizeof(LargestUInt) + 1
    };
    
    // Defines a char buffer for use with uintToString().
    typedef char UIntToStringBuffer[uintToStringBufferSize];
    
    /** Converts an unsigned integer to string.
     * @param value Unsigned interger to convert to string
     * @param current Input/Output string buffer.
     *        Must have at least uintToStringBufferSize chars free.
     */
    static inline void uintToString(LargestUInt value, char*& current) {
      *--current = 0;
      do {
        *--current = static_cast<signed char>(value % 10U + static_cast<unsigned>('0'));
        value /= 10;
      } while (value != 0);
    }
    
    /** Change ',' to '.' everywhere in buffer.
     *
     * We had a sophisticated way, but it did not work in WinCE.
     * @see https://github.com/open-source-parsers/jsoncpp/pull/9
     */
    static inline void fixNumericLocale(char* begin, char* end) {
      while (begin < end) {
        if (*begin == ',') {
          *begin = '.';
        }
        ++begin;
      }
    }
    
    } // namespace Json {
        
    
    #endif // LIB_JSONCPP_JSON_TOOL_H_INCLUDED
    
    // //
    // End of content of file: src/lib_json/json_tool.h
    // //
    
    
    
    
    
    
    // //
    // Beginning of content of file: src/lib_json/json_reader.cpp
    // //
    
    // Copyright 2007-2011 Baptiste Lepilleur
    // Distributed under MIT license, or public domain if desired and
    // recognized in your jurisdiction.
    // See file LICENSE for detail or copy at http://jsoncpp.sourceforge.net/LICENSE
    
    #if !defined(JSON_IS_AMALGAMATION)
    #include <json/assertions.h>
    #include <json/reader.h>
    #include <json/value.h>
    #include "json_tool.h"
    #endif // if !defined(JSON_IS_AMALGAMATION)
    #include <utility>
    #include <cstdio>
    #include <cassert>
    #include <cstring>
    #include <istream>
    #include <sstream>
    #include <memory>
    #include <set>
    
    #if defined(_MSC_VER) && _MSC_VER < 1500 // VC++ 8.0 and below
    #define snprintf _snprintf
    #endif
    
    #if defined(_MSC_VER) && _MSC_VER >= 1400 // VC++ 8.0
    // Disable warning about strdup being deprecated.
    #pragma warning(disable : 4996)
    #endif
    
    static int const stackLimit_g = 1000;
    static int       stackDepth_g = 0;  // see readValue()
    
    namespace Json {
    
    typedef std::auto_ptr<CharReader>   CharReaderPtr;
    
    // Implementation of class Features
    // 
    
    Features::Features()
        : allowComments_(true), strictRoot_(false)
    {}
    Features Features::all() { return Features(); }
    
    Features Features::strictMode() {
      Features features;
      features.allowComments_ = false;
      features.strictRoot_ = true;
      return features;
    }
    
    // Implementation of class Reader
    // 
    
    static bool containsNewLine(Reader::Location begin, Reader::Location end) {
      for (; begin < end; ++begin)
        if (*begin == '\n' || *begin == '\r')
          return true;
      return false;
    }
    
    // Class Reader
    // //
    
    Reader::Reader()
        : errors_(), document_(), begin_(), end_(), current_(), lastValueEnd_(),
          lastValue_(), commentsBefore_(), features_(Features::all()),
          collectComments_() {}
    
    Reader::Reader(const Features& features)
        : errors_(), document_(), begin_(), end_(), current_(), lastValueEnd_(),
          lastValue_(), commentsBefore_(), features_(features), collectComments_() {
    }
    
    bool
    Reader::parse(const std::string& document, Value& root, bool collectComments) {
      document_ = document;
      const char* begin = document_.c_str();
      const char* end = begin + document_.length();
      return parse(begin, end, root, collectComments);
    }
    
    bool Reader::parse(std::istream& sin, Value& root, bool collectComments) {
      // std::istream_iterator<char> begin(sin);
      // std::istream_iterator<char> end;
      // Those would allow streamed input from a file, if parse() were a
      // template function.
    
      // Since std::string is reference-counted, this at least does not
      // create an extra copy.
      std::string doc;
      std::getline(sin, doc, (char)EOF);
      return parse(doc, root, collectComments);
    }
    
    bool Reader::parse(const char* beginDoc,
                       const char* endDoc,
                       Value& root,
                       bool collectComments) {
      if (!features_.allowComments_) {
        collectComments = false;
      }
    
      begin_ = beginDoc;
      end_ = endDoc;
      collectComments_ = collectComments;
      current_ = begin_;
      lastValueEnd_ = 0;
      lastValue_ = 0;
      commentsBefore_ = "";
      errors_.clear();
      while (!nodes_.empty())
        nodes_.pop();
      nodes_.push(&root);
    
      stackDepth_g = 0;  // Yes, this is bad coding, but options are limited.
      bool successful = readValue();
      Token token;
      skipCommentTokens(token);
      if (collectComments_ && !commentsBefore_.empty())
        root.setComment(commentsBefore_, commentAfter);
      if (features_.strictRoot_) {
        if (!root.isArray() && !root.isObject()) {
          // Set error location to start of doc, ideally should be first token found
          // in doc
          token.type_ = tokenError;
          token.start_ = beginDoc;
          token.end_ = endDoc;
          addError(
              "A valid JSON document must be either an array or an object value.",
              token);
          return false;
        }
      }
      return successful;
    }
    
    bool Reader::readValue() {
      // This is a non-reentrant way to support a stackLimit. Terrible!
      // But this deprecated class has a security problem: Bad input can
      // cause a seg-fault. This seems like a fair, binary-compatible way
      // to prevent the problem.
      if (stackDepth_g >= stackLimit_g) throwRuntimeError("Exceeded stackLimit in readValue().");
      ++stackDepth_g;
    
      Token token;
      skipCommentTokens(token);
      bool successful = true;
    
      if (collectComments_ && !commentsBefore_.empty()) {
        currentValue().setComment(commentsBefore_, commentBefore);
        commentsBefore_ = "";
      }
    
      switch (token.type_) {
      case tokenObjectBegin:
        successful = readObject(token);
        break;
      case tokenArrayBegin:
        successful = readArray(token);
        break;
      case tokenNumber:
        successful = decodeNumber(token);
        break;
      case tokenString:
        successful = decodeString(token);
        break;
      case tokenTrue:
        {
        Value v(true);
        currentValue().swapPayload(v);
        }
        break;
      case tokenFalse:
        {
        Value v(false);
        currentValue().swapPayload(v);
        }
        break;
      case tokenNull:
        {
        Value v;
        currentValue().swapPayload(v);
        }
        break;
      // Else, fall through...
      default:
        return addError("Syntax error: value, object or array expected.", token);
      }
    
      if (collectComments_) {
        lastValueEnd_ = current_;
        lastValue_ = &currentValue();
      }
    
      --stackDepth_g;
      return successful;
    }
    
    void Reader::skipCommentTokens(Token& token) {
      if (features_.allowComments_) {
        do {
          readToken(token);
        } while (token.type_ == tokenComment);
      } else {
        readToken(token);
      }
    }
    
    bool Reader::readToken(Token& token) {
      skipSpaces();
      token.start_ = current_;
      Char c = getNextChar();
      bool ok = true;
      switch (c) {
      case '{':
        token.type_ = tokenObjectBegin;
        break;
      case '}':
        token.type_ = tokenObjectEnd;
        break;
      case '[':
        token.type_ = tokenArrayBegin;
        break;
      case ']':
        token.type_ = tokenArrayEnd;
        break;
      case '"':
        token.type_ = tokenString;
        ok = readString();
        break;
      case '/':
        token.type_ = tokenComment;
        ok = readComment();
        break;
      case '0':
      case '1':
      case '2':
      case '3':
      case '4':
      case '5':
      case '6':
      case '7':
      case '8':
      case '9':
      case '-':
        token.type_ = tokenNumber;
        readNumber();
        break;
      case 't':
        token.type_ = tokenTrue;
        ok = match("rue", 3);
        break;
      case 'f':
        token.type_ = tokenFalse;
        ok = match("alse", 4);
        break;
      case 'n':
        token.type_ = tokenNull;
        ok = match("ull", 3);
        break;
      case ',':
        token.type_ = tokenArraySeparator;
        break;
      case ':':
        token.type_ = tokenMemberSeparator;
        break;
      case 0:
        token.type_ = tokenEndOfStream;
        break;
      default:
        ok = false;
        break;
      }
      if (!ok)
        token.type_ = tokenError;
      token.end_ = current_;
      return true;
    }
    
    void Reader::skipSpaces() {
      while (current_ != end_) {
        Char c = *current_;
        if (c == ' ' || c == '\t' || c == '\r' || c == '\n')
          ++current_;
        else
          break;
      }
    }
    
    bool Reader::match(Location pattern, int patternLength) {
      if (end_ - current_ < patternLength)
        return false;
      int index = patternLength;
      while (index--)
        if (current_[index] != pattern[index])
          return false;
      current_ += patternLength;
      return true;
    }
    
    bool Reader::readComment() {
      Location commentBegin = current_ - 1;
      Char c = getNextChar();
      bool successful = false;
      if (c == '*')
        successful = readCStyleComment();
      else if (c == '/')
        successful = readCppStyleComment();
      if (!successful)
        return false;
    
      if (collectComments_) {
        CommentPlacement placement = commentBefore;
        if (lastValueEnd_ && !containsNewLine(lastValueEnd_, commentBegin)) {
          if (c != '*' || !containsNewLine(commentBegin, current_))
            placement = commentAfterOnSameLine;
        }
    
        addComment(commentBegin, current_, placement);
      }
      return true;
    }
    
    static std::string normalizeEOL(Reader::Location begin, Reader::Location end) {
      std::string normalized;
      normalized.reserve(end - begin);
      Reader::Location current = begin;
      while (current != end) {
        char c = *current++;
        if (c == '\r') {
          if (current != end && *current == '\n')
             // convert dos EOL
             ++current;
          // convert Mac EOL
          normalized += '\n';
        } else {
          normalized += c;
        }
      }
      return normalized;
    }
    
    void
    Reader::addComment(Location begin, Location end, CommentPlacement placement) {
      assert(collectComments_);
      const std::string& normalized = normalizeEOL(begin, end);
      if (placement == commentAfterOnSameLine) {
        assert(lastValue_ != 0);
        lastValue_->setComment(normalized, placement);
      } else {
        commentsBefore_ += normalized;
      }
    }
    
    bool Reader::readCStyleComment() {
      while (current_ != end_) {
        Char c = getNextChar();
        if (c == '*' && *current_ == '/')
          break;
      }
      return getNextChar() == '/';
    }
    
    bool Reader::readCppStyleComment() {
      while (current_ != end_) {
        Char c = getNextChar();
        if (c == '\n')
          break;
        if (c == '\r') {
          // Consume DOS EOL. It will be normalized in addComment.
          if (current_ != end_ && *current_ == '\n')
            getNextChar();
          // Break on Moc OS 9 EOL.
          break;
        }
      }
      return true;
    }
    
    void Reader::readNumber() {
      const char *p = current_;
      char c = '0'; // stopgap for already consumed character
      // integral part
      while (c >= '0' && c <= '9')
        c = (current_ = p) < end_ ? *p++ : 0;
      // fractional part
      if (c == '.') {
        c = (current_ = p) < end_ ? *p++ : 0;
        while (c >= '0' && c <= '9')
          c = (current_ = p) < end_ ? *p++ : 0;
      }
      // exponential part
      if (c == 'e' || c == 'E') {
        c = (current_ = p) < end_ ? *p++ : 0;
        if (c == '+' || c == '-')
          c = (current_ = p) < end_ ? *p++ : 0;
        while (c >= '0' && c <= '9')
          c = (current_ = p) < end_ ? *p++ : 0;
      }
    }
    
    bool Reader::readString() {
      Char c = 0;
      while (current_ != end_) {
        c = getNextChar();
        if (c == '\\')
          getNextChar();
        else if (c == '"')
          break;
      }
      return c == '"';
    }
    
    bool Reader::readObject(Token& /*tokenStart*/) {
      Token tokenName;
      std::string name;
      Value init(objectValue);
      currentValue().swapPayload(init);
      while (readToken(tokenName)) {
        bool initialTokenOk = true;
        while (tokenName.type_ == tokenComment && initialTokenOk)
          initialTokenOk = readToken(tokenName);
        if (!initialTokenOk)
          break;
        if (tokenName.type_ == tokenObjectEnd && name.empty()) // empty object
          return true;
        name = "";
        if (tokenName.type_ == tokenString) {
          if (!decodeString(tokenName, name))
            return recoverFromError(tokenObjectEnd);
        } else {
          break;
        }
    
        Token colon;
        if (!readToken(colon) || colon.type_ != tokenMemberSeparator) {
          return addErrorAndRecover(
              "Missing ':' after object member name", colon, tokenObjectEnd);
        }
        Value& value = currentValue()[name];
        nodes_.push(&value);
        bool ok = readValue();
        nodes_.pop();
        if (!ok) // error already set
          return recoverFromError(tokenObjectEnd);
    
        Token comma;
        if (!readToken(comma) ||
            (comma.type_ != tokenObjectEnd && comma.type_ != tokenArraySeparator &&
             comma.type_ != tokenComment)) {
          return addErrorAndRecover(
              "Missing ',' or '}' in object declaration", comma, tokenObjectEnd);
        }
        bool finalizeTokenOk = true;
        while (comma.type_ == tokenComment && finalizeTokenOk)
          finalizeTokenOk = readToken(comma);
        if (comma.type_ == tokenObjectEnd)
          return true;
      }
      return addErrorAndRecover(
          "Missing '}' or object member name", tokenName, tokenObjectEnd);
    }
    
    bool Reader::readArray(Token& /*tokenStart*/) {
      Value init(arrayValue);
      currentValue().swapPayload(init);
      skipSpaces();
      if (*current_ == ']') // empty array
      {
        Token endArray;
        readToken(endArray);
        return true;
      }
      int index = 0;
      for (;;) {
        Value& value = currentValue()[index++];
        nodes_.push(&value);
        bool ok = readValue();
        nodes_.pop();
        if (!ok) // error already set
          return recoverFromError(tokenArrayEnd);
    
        Token token;
        // Accept Comment after last item in the array.
        ok = readToken(token);
        while (token.type_ == tokenComment && ok) {
          ok = readToken(token);
        }
        bool badTokenType =
            (token.type_ != tokenArraySeparator && token.type_ != tokenArrayEnd);
        if (!ok || badTokenType) {
          return addErrorAndRecover(
              "Missing ',' or ']' in array declaration", token, tokenArrayEnd);
        }
        if (token.type_ == tokenArrayEnd)
          break;
      }
      return true;
    }
    
    bool Reader::decodeNumber(Token& token) {
      Value decoded;
      if (!decodeNumber(token, decoded))
        return false;
      currentValue().swapPayload(decoded);
      return true;
    }
    
    bool Reader::decodeNumber(Token& token, Value& decoded) {
      // Attempts to parse the number as an integer. If the number is
      // larger than the maximum supported value of an integer then
      // we decode the number as a double.
      Location current = token.start_;
      bool isNegative = *current == '-';
      if (isNegative)
        ++current;
      // TODO: Help the compiler do the div and mod at compile time or get rid of them.
      Value::LargestUInt maxIntegerValue =
          isNegative ? Value::LargestUInt(-Value::minLargestInt)
                     : Value::maxLargestUInt;
      Value::LargestUInt threshold = maxIntegerValue / 10;
      Value::LargestUInt value = 0;
      while (current < token.end_) {
        Char c = *current++;
        if (c < '0' || c > '9')
          return decodeDouble(token, decoded);
        Value::UInt digit(c - '0');
        if (value >= threshold) {
          // We've hit or exceeded the max value divided by 10 (rounded down). If
          // a) we've only just touched the limit, b) this is the last digit, and
          // c) it's small enough to fit in that rounding delta, we're okay.
          // Otherwise treat this number as a double to avoid overflow.
          if (value > threshold || current != token.end_ ||
              digit > maxIntegerValue % 10) {
            return decodeDouble(token, decoded);
          }
        }
        value = value * 10 + digit;
      }
      if (isNegative)
        decoded = -Value::LargestInt(value);
      else if (value <= Value::LargestUInt(Value::maxInt))
        decoded = Value::LargestInt(value);
      else
        decoded = value;
      return true;
    }
    
    bool Reader::decodeDouble(Token& token) {
      Value decoded;
      if (!decodeDouble(token, decoded))
        return false;
      currentValue().swapPayload(decoded);
      return true;
    }
    
    bool Reader::decodeDouble(Token& token, Value& decoded) {
      double value = 0;
      std::string buffer(token.start_, token.end_);
      std::istringstream is(buffer);
      if (!(is >> value))
        return addError("'" + std::string(token.start_, token.end_) +
                            "' is not a number.",
                        token);
      decoded = value;
      return true;
    }
    
    bool Reader::decodeString(Token& token) {
      std::string decoded_string;
      if (!decodeString(token, decoded_string))
        return false;
      Value decoded(decoded_string);
      currentValue().swapPayload(decoded);
      return true;
    }
    
    bool Reader::decodeString(Token& token, std::string& decoded) {
      decoded.reserve(token.end_ - token.start_ - 2);
      Location current = token.start_ + 1; // skip '"'
      Location end = token.end_ - 1;       // do not include '"'
      while (current != end) {
        Char c = *current++;
        if (c == '"')
          break;
        else if (c == '\\') {
          if (current == end)
            return addError("Empty escape sequence in string", token, current);
          Char escape = *current++;
          switch (escape) {
          case '"':
            decoded += '"';
            break;
          case '/':
            decoded += '/';
            break;
          case '\\':
            decoded += '\\';
            break;
          case 'b':
            decoded += '\b';
            break;
          case 'f':
            decoded += '\f';
            break;
          case 'n':
            decoded += '\n';
            break;
          case 'r':
            decoded += '\r';
            break;
          case 't':
            decoded += '\t';
            break;
          case 'u': {
            unsigned int unicode;
            if (!decodeUnicodeCodePoint(token, current, end, unicode))
              return false;
            decoded += codePointToUTF8(unicode);
          } break;
          default:
            return addError("Bad escape sequence in string", token, current);
          }
        } else {
          decoded += c;
        }
      }
      return true;
    }
    
    bool Reader::decodeUnicodeCodePoint(Token& token,
                                        Location& current,
                                        Location end,
                                        unsigned int& unicode) {
    
      if (!decodeUnicodeEscapeSequence(token, current, end, unicode))
        return false;
      if (unicode >= 0xD800 && unicode <= 0xDBFF) {
        // surrogate pairs
        if (end - current < 6)
          return addError(
              "additional six characters expected to parse unicode surrogate pair.",
              token,
              current);
        unsigned int surrogatePair;
        if (*(current++) == '\\' && *(current++) == 'u') {
          if (decodeUnicodeEscapeSequence(token, current, end, surrogatePair)) {
            unicode = 0x10000 + ((unicode & 0x3FF) << 10) + (surrogatePair & 0x3FF);
          } else
            return false;
        } else
          return addError("expecting another \\u token to begin the second half of "
                          "a unicode surrogate pair",
                          token,
                          current);
      }
      return true;
    }
    
    bool Reader::decodeUnicodeEscapeSequence(Token& token,
                                             Location& current,
                                             Location end,
                                             unsigned int& unicode) {
      if (end - current < 4)
        return addError(
            "Bad unicode escape sequence in string: four digits expected.",
            token,
            current);
      unicode = 0;
      for (int index = 0; index < 4; ++index) {
        Char c = *current++;
        unicode *= 16;
        if (c >= '0' && c <= '9')
          unicode += c - '0';
        else if (c >= 'a' && c <= 'f')
          unicode += c - 'a' + 10;
        else if (c >= 'A' && c <= 'F')
          unicode += c - 'A' + 10;
        else
          return addError(
              "Bad unicode escape sequence in string: hexadecimal digit expected.",
              token,
              current);
      }
      return true;
    }
    
    bool
    Reader::addError(const std::string& message, Token& token, Location extra) {
      ErrorInfo info;
      info.token_ = token;
      info.message_ = message;
      info.extra_ = extra;
      errors_.push_back(info);
      return false;
    }
    
    bool Reader::recoverFromError(TokenType skipUntilToken) {
      int errorCount = int(errors_.size());
      Token skip;
      for (;;) {
        if (!readToken(skip))
          errors_.resize(errorCount); // discard errors caused by recovery
        if (skip.type_ == skipUntilToken || skip.type_ == tokenEndOfStream)
          break;
      }
      errors_.resize(errorCount);
      return false;
    }
    
    bool Reader::addErrorAndRecover(const std::string& message,
                                    Token& token,
                                    TokenType skipUntilToken) {
      addError(message, token);
      return recoverFromError(skipUntilToken);
    }
    
    Value& Reader::currentValue() { return *(nodes_.top()); }
    
    Reader::Char Reader::getNextChar() {
      if (current_ == end_)
        return 0;
      return *current_++;
    }
    
    void Reader::getLocationLineAndColumn(Location location,
                                          int& line,
                                          int& column) const {
      Location current = begin_;
      Location lastLineStart = current;
      line = 0;
      while (current < location && current != end_) {
        Char c = *current++;
        if (c == '\r') {
          if (*current == '\n')
            ++current;
          lastLineStart = current;
          ++line;
        } else if (c == '\n') {
          lastLineStart = current;
          ++line;
        }
      }
      // column & line start at 1
      column = int(location - lastLineStart) + 1;
      ++line;
    }
    
    std::string Reader::getLocationLineAndColumn(Location location) const {
      int line, column;
      getLocationLineAndColumn(location, line, column);
      char buffer[18 + 16 + 16 + 1];
    #if defined(_MSC_VER) && defined(__STDC_SECURE_LIB__)
    #if defined(WINCE)
      _snprintf(buffer, sizeof(buffer), "Line %d, Column %d", line, column);
    #else
      sprintf_s(buffer, sizeof(buffer), "Line %d, Column %d", line, column);
    #endif
    #else
      snprintf(buffer, sizeof(buffer), "Line %d, Column %d", line, column);
    #endif
      return buffer;
    }
    
    // Deprecated. Preserved for backward compatibility
    std::string Reader::getFormatedErrorMessages() const {
      return getFormattedErrorMessages();
    }
    
    std::string Reader::getFormattedErrorMessages() const {
      std::string formattedMessage;
      for (Errors::const_iterator itError = errors_.begin();
           itError != errors_.end();
           ++itError) {
        const ErrorInfo& error = *itError;
        formattedMessage +=
            "* " + getLocationLineAndColumn(error.token_.start_) + "\n";
        formattedMessage += "  " + error.message_ + "\n";
        if (error.extra_)
          formattedMessage +=
              "See " + getLocationLineAndColumn(error.extra_) + " for detail.\n";
      }
      return formattedMessage;
    }
    
    // Reader
    /
    
    // exact copy of Features
    class OurFeatures {
    public:
      static OurFeatures all();
      OurFeatures();
      bool allowComments_;
      bool strictRoot_;
      bool allowDroppedNullPlaceholders_;
      bool allowNumericKeys_;
      bool allowSingleQuotes_;
      bool failIfExtra_;
      bool rejectDupKeys_;
      int stackLimit_;
    };  // OurFeatures
    
    // exact copy of Implementation of class Features
    // 
    
    OurFeatures::OurFeatures()
        : allowComments_(true), strictRoot_(false)
        , allowDroppedNullPlaceholders_(false), allowNumericKeys_(false)
        , allowSingleQuotes_(false)
        , failIfExtra_(false)
    {
    }
    
    OurFeatures OurFeatures::all() { return OurFeatures(); }
    
    // Implementation of class Reader
    // 
    
    // exact copy of Reader, renamed to OurReader
    class OurReader {
    public:
      typedef char Char;
      typedef const Char* Location;
      struct StructuredError {
        size_t offset_start;
        size_t offset_limit;
        std::string message;
      };
    
      OurReader(OurFeatures const& features);
      bool parse(const char* beginDoc,
                 const char* endDoc,
                 Value& root,
                 bool collectComments = true);
      std::string getFormattedErrorMessages() const;
    
    private:
      OurReader(OurReader const&);  // no impl
      void operator=(OurReader const&);  // no impl
    
      enum TokenType {
        tokenEndOfStream = 0,
        tokenObjectBegin,
        tokenObjectEnd,
        tokenArrayBegin,
        tokenArrayEnd,
        tokenString,
        tokenNumber,
        tokenTrue,
        tokenFalse,
        tokenNull,
        tokenArraySeparator,
        tokenMemberSeparator,
        tokenComment,
        tokenError
      };
    
      class Token {
      public:
        TokenType type_;
        Location start_;
        Location end_;
      };
    
      class ErrorInfo {
      public:
        Token token_;
        std::string message_;
        Location extra_;
      };
    
      typedef std::deque<ErrorInfo> Errors;
    
      bool readToken(Token& token);
      void skipSpaces();
      bool match(Location pattern, int patternLength);
      bool readComment();
      bool readCStyleComment();
      bool readCppStyleComment();
      bool readString();
      bool readStringSingleQuote();
      void readNumber();
      bool readValue();
      bool readObject(Token& token);
      bool readArray(Token& token);
      bool decodeNumber(Token& token);
      bool decodeNumber(Token& token, Value& decoded);
      bool decodeString(Token& token);
      bool decodeString(Token& token, std::string& decoded);
      bool decodeDouble(Token& token);
      bool decodeDouble(Token& token, Value& decoded);
      bool decodeUnicodeCodePoint(Token& token,
                                  Location& current,
                                  Location end,
                                  unsigned int& unicode);
      bool decodeUnicodeEscapeSequence(Token& token,
                                       Location& current,
                                       Location end,
                                       unsigned int& unicode);
      bool addError(const std::string& message, Token& token, Location extra = 0);
      bool recoverFromError(TokenType skipUntilToken);
      bool addErrorAndRecover(const std::string& message,
                              Token& token,
                              TokenType skipUntilToken);
      void skipUntilSpace();
      Value& currentValue();
      Char getNextChar();
      void
      getLocationLineAndColumn(Location location, int& line, int& column) const;
      std::string getLocationLineAndColumn(Location location) const;
      void addComment(Location begin, Location end, CommentPlacement placement);
      void skipCommentTokens(Token& token);
    
      typedef std::stack<Value*> Nodes;
      Nodes nodes_;
      Errors errors_;
      std::string document_;
      Location begin_;
      Location end_;
      Location current_;
      Location lastValueEnd_;
      Value* lastValue_;
      std::string commentsBefore_;
      int stackDepth_;
    
      OurFeatures const features_;
      bool collectComments_;
    };  // OurReader
    
    // complete copy of Read impl, for OurReader
    
    OurReader::OurReader(OurFeatures const& features)
        : errors_(), document_(), begin_(), end_(), current_(), lastValueEnd_(),
          lastValue_(), commentsBefore_(), features_(features), collectComments_() {
    }
    
    bool OurReader::parse(const char* beginDoc,
                       const char* endDoc,
                       Value& root,
                       bool collectComments) {
      if (!features_.allowComments_) {
        collectComments = false;
      }
    
      begin_ = beginDoc;
      end_ = endDoc;
      collectComments_ = collectComments;
      current_ = begin_;
      lastValueEnd_ = 0;
      lastValue_ = 0;
      commentsBefore_ = "";
      errors_.clear();
      while (!nodes_.empty())
        nodes_.pop();
      nodes_.push(&root);
    
      stackDepth_ = 0;
      bool successful = readValue();
      Token token;
      skipCommentTokens(token);
      if (features_.failIfExtra_) {
        if (token.type_ != tokenError && token.type_ != tokenEndOfStream) {
          addError("Extra non-whitespace after JSON value.", token);
          return false;
        }
      }
      if (collectComments_ && !commentsBefore_.empty())
        root.setComment(commentsBefore_, commentAfter);
      if (features_.strictRoot_) {
        if (!root.isArray() && !root.isObject()) {
          // Set error location to start of doc, ideally should be first token found
          // in doc
          token.type_ = tokenError;
          token.start_ = beginDoc;
          token.end_ = endDoc;
          addError(
              "A valid JSON document must be either an array or an object value.",
              token);
          return false;
        }
      }
      return successful;
    }
    
    bool OurReader::readValue() {
      if (stackDepth_ >= features_.stackLimit_) throwRuntimeError("Exceeded stackLimit in readValue().");
      ++stackDepth_;
      Token token;
      skipCommentTokens(token);
      bool successful = true;
    
      if (collectComments_ && !commentsBefore_.empty()) {
        currentValue().setComment(commentsBefore_, commentBefore);
        commentsBefore_ = "";
      }
    
      switch (token.type_) {
      case tokenObjectBegin:
        successful = readObject(token);
        break;
      case tokenArrayBegin:
        successful = readArray(token);
        break;
      case tokenNumber:
        successful = decodeNumber(token);
        break;
      case tokenString:
        successful = decodeString(token);
        break;
      case tokenTrue:
        {
        Value v(true);
        currentValue().swapPayload(v);
        }
        break;
      case tokenFalse:
        {
        Value v(false);
        currentValue().swapPayload(v);
        }
        break;
      case tokenNull:
        {
        Value v;
        currentValue().swapPayload(v);
        }
        break;
      case tokenArraySeparator:
      case tokenObjectEnd:
      case tokenArrayEnd:
        if (features_.allowDroppedNullPlaceholders_) {
          // "Un-read" the current token and mark the current value as a null
          // token.
          current_--;
          Value v;
          currentValue().swapPayload(v);
          break;
        } // else, fall through ...
      default:
        return addError("Syntax error: value, object or array expected.", token);
      }
    
      if (collectComments_) {
        lastValueEnd_ = current_;
        lastValue_ = &currentValue();
      }
    
      --stackDepth_;
      return successful;
    }
    
    void OurReader::skipCommentTokens(Token& token) {
      if (features_.allowComments_) {
        do {
          readToken(token);
        } while (token.type_ == tokenComment);
      } else {
        readToken(token);
      }
    }
    
    bool OurReader::readToken(Token& token) {
      skipSpaces();
      token.start_ = current_;
      Char c = getNextChar();
      bool ok = true;
      switch (c) {
      case '{':
        token.type_ = tokenObjectBegin;
        break;
      case '}':
        token.type_ = tokenObjectEnd;
        break;
      case '[':
        token.type_ = tokenArrayBegin;
        break;
      case ']':
        token.type_ = tokenArrayEnd;
        break;
      case '"':
        token.type_ = tokenString;
        ok = readString();
        break;
      case '\'':
        if (features_.allowSingleQuotes_) {
        token.type_ = tokenString;
        ok = readStringSingleQuote();
        break;
        } // else continue
      case '/':
        token.type_ = tokenComment;
        ok = readComment();
        break;
      case '0':
      case '1':
      case '2':
      case '3':
      case '4':
      case '5':
      case '6':
      case '7':
      case '8':
      case '9':
      case '-':
        token.type_ = tokenNumber;
        readNumber();
        break;
      case 't':
        token.type_ = tokenTrue;
        ok = match("rue", 3);
        break;
      case 'f':
        token.type_ = tokenFalse;
        ok = match("alse", 4);
        break;
      case 'n':
        token.type_ = tokenNull;
        ok = match("ull", 3);
        break;
      case ',':
        token.type_ = tokenArraySeparator;
        break;
      case ':':
        token.type_ = tokenMemberSeparator;
        break;
      case 0:
        token.type_ = tokenEndOfStream;
        break;
      default:
        ok = false;
        break;
      }
      if (!ok)
        token.type_ = tokenError;
      token.end_ = current_;
      return true;
    }
    
    void OurReader::skipSpaces() {
      while (current_ != end_) {
        Char c = *current_;
        if (c == ' ' || c == '\t' || c == '\r' || c == '\n')
          ++current_;
        else
          break;
      }
    }
    
    bool OurReader::match(Location pattern, int patternLength) {
      if (end_ - current_ < patternLength)
        return false;
      int index = patternLength;
      while (index--)
        if (current_[index] != pattern[index])
          return false;
      current_ += patternLength;
      return true;
    }
    
    bool OurReader::readComment() {
      Location commentBegin = current_ - 1;
      Char c = getNextChar();
      bool successful = false;
      if (c == '*')
        successful = readCStyleComment();
      else if (c == '/')
        successful = readCppStyleComment();
      if (!successful)
        return false;
    
      if (collectComments_) {
        CommentPlacement placement = commentBefore;
        if (lastValueEnd_ && !containsNewLine(lastValueEnd_, commentBegin)) {
          if (c != '*' || !containsNewLine(commentBegin, current_))
            placement = commentAfterOnSameLine;
        }
    
        addComment(commentBegin, current_, placement);
      }
      return true;
    }
    
    void
    OurReader::addComment(Location begin, Location end, CommentPlacement placement) {
      assert(collectComments_);
      const std::string& normalized = normalizeEOL(begin, end);
      if (placement == commentAfterOnSameLine) {
        assert(lastValue_ != 0);
        lastValue_->setComment(normalized, placement);
      } else {
        commentsBefore_ += normalized;
      }
    }
    
    bool OurReader::readCStyleComment() {
      while (current_ != end_) {
        Char c = getNextChar();
        if (c == '*' && *current_ == '/')
          break;
      }
      return getNextChar() == '/';
    }
    
    bool OurReader::readCppStyleComment() {
      while (current_ != end_) {
        Char c = getNextChar();
        if (c == '\n')
          break;
        if (c == '\r') {
          // Consume DOS EOL. It will be normalized in addComment.
          if (current_ != end_ && *current_ == '\n')
            getNextChar();
          // Break on Moc OS 9 EOL.
          break;
        }
      }
      return true;
    }
    
    void OurReader::readNumber() {
      const char *p = current_;
      char c = '0'; // stopgap for already consumed character
      // integral part
      while (c >= '0' && c <= '9')
        c = (current_ = p) < end_ ? *p++ : 0;
      // fractional part
      if (c == '.') {
        c = (current_ = p) < end_ ? *p++ : 0;
        while (c >= '0' && c <= '9')
          c = (current_ = p) < end_ ? *p++ : 0;
      }
      // exponential part
      if (c == 'e' || c == 'E') {
        c = (current_ = p) < end_ ? *p++ : 0;
        if (c == '+' || c == '-')
          c = (current_ = p) < end_ ? *p++ : 0;
        while (c >= '0' && c <= '9')
          c = (current_ = p) < end_ ? *p++ : 0;
      }
    }
    bool OurReader::readString() {
      Char c = 0;
      while (current_ != end_) {
        c = getNextChar();
        if (c == '\\')
          getNextChar();
        else if (c == '"')
          break;
      }
      return c == '"';
    }
    
    
    bool OurReader::readStringSingleQuote() {
      Char c = 0;
      while (current_ != end_) {
        c = getNextChar();
        if (c == '\\')
          getNextChar();
        else if (c == '\'')
          break;
      }
      return c == '\'';
    }
    
    bool OurReader::readObject(Token& /*tokenStart*/) {
      Token tokenName;
      std::string name;
      Value init(objectValue);
      currentValue().swapPayload(init);
      while (readToken(tokenName)) {
        bool initialTokenOk = true;
        while (tokenName.type_ == tokenComment && initialTokenOk)
          initialTokenOk = readToken(tokenName);
        if (!initialTokenOk)
          break;
        if (tokenName.type_ == tokenObjectEnd && name.empty()) // empty object
          return true;
        name = "";
        if (tokenName.type_ == tokenString) {
          if (!decodeString(tokenName, name))
            return recoverFromError(tokenObjectEnd);
        } else if (tokenName.type_ == tokenNumber && features_.allowNumericKeys_) {
          Value numberName;
          if (!decodeNumber(tokenName, numberName))
            return recoverFromError(tokenObjectEnd);
          name = numberName.asString();
        } else {
          break;
        }
    
        Token colon;
        if (!readToken(colon) || colon.type_ != tokenMemberSeparator) {
          return addErrorAndRecover(
              "Missing ':' after object member name", colon, tokenObjectEnd);
        }
        if (name.length() >= (1U<<30)) throwRuntimeError("keylength >= 2^30");
        if (features_.rejectDupKeys_ && currentValue().isMember(name)) {
          std::string msg = "Duplicate key: '" + name + "'";
          return addErrorAndRecover(
              msg, tokenName, tokenObjectEnd);
        }
        Value& value = currentValue()[name];
        nodes_.push(&value);
        bool ok = readValue();
        nodes_.pop();
        if (!ok) // error already set
          return recoverFromError(tokenObjectEnd);
    
        Token comma;
        if (!readToken(comma) ||
            (comma.type_ != tokenObjectEnd && comma.type_ != tokenArraySeparator &&
             comma.type_ != tokenComment)) {
          return addErrorAndRecover(
              "Missing ',' or '}' in object declaration", comma, tokenObjectEnd);
        }
        bool finalizeTokenOk = true;
        while (comma.type_ == tokenComment && finalizeTokenOk)
          finalizeTokenOk = readToken(comma);
        if (comma.type_ == tokenObjectEnd)
          return true;
      }
      return addErrorAndRecover(
          "Missing '}' or object member name", tokenName, tokenObjectEnd);
    }
    
    bool OurReader::readArray(Token& /*tokenStart*/) {
      Value init(arrayValue);
      currentValue().swapPayload(init);
      skipSpaces();
      if (*current_ == ']') // empty array
      {
        Token endArray;
        readToken(endArray);
        return true;
      }
      int index = 0;
      for (;;) {
        Value& value = currentValue()[index++];
        nodes_.push(&value);
        bool ok = readValue();
        nodes_.pop();
        if (!ok) // error already set
          return recoverFromError(tokenArrayEnd);
    
        Token token;
        // Accept Comment after last item in the array.
        ok = readToken(token);
        while (token.type_ == tokenComment && ok) {
          ok = readToken(token);
        }
        bool badTokenType =
            (token.type_ != tokenArraySeparator && token.type_ != tokenArrayEnd);
        if (!ok || badTokenType) {
          return addErrorAndRecover(
              "Missing ',' or ']' in array declaration", token, tokenArrayEnd);
        }
        if (token.type_ == tokenArrayEnd)
          break;
      }
      return true;
    }
    
    bool OurReader::decodeNumber(Token& token) {
      Value decoded;
      if (!decodeNumber(token, decoded))
        return false;
      currentValue().swapPayload(decoded);
      return true;
    }
    
    bool OurReader::decodeNumber(Token& token, Value& decoded) {
      // Attempts to parse the number as an integer. If the number is
      // larger than the maximum supported value of an integer then
      // we decode the number as a double.
      Location current = token.start_;
      bool isNegative = *current == '-';
      if (isNegative)
        ++current;
      // TODO: Help the compiler do the div and mod at compile time or get rid of them.
      Value::LargestUInt maxIntegerValue =
          isNegative ? Value::LargestUInt(-Value::minLargestInt)
                     : Value::maxLargestUInt;
      Value::LargestUInt threshold = maxIntegerValue / 10;
      Value::LargestUInt value = 0;
      while (current < token.end_) {
        Char c = *current++;
        if (c < '0' || c > '9')
          return decodeDouble(token, decoded);
        Value::UInt digit(c - '0');
        if (value >= threshold) {
          // We've hit or exceeded the max value divided by 10 (rounded down). If
          // a) we've only just touched the limit, b) this is the last digit, and
          // c) it's small enough to fit in that rounding delta, we're okay.
          // Otherwise treat this number as a double to avoid overflow.
          if (value > threshold || current != token.end_ ||
              digit > maxIntegerValue % 10) {
            return decodeDouble(token, decoded);
          }
        }
        value = value * 10 + digit;
      }
      if (isNegative)
        decoded = -Value::LargestInt(value);
      else if (value <= Value::LargestUInt(Value::maxInt))
        decoded = Value::LargestInt(value);
      else
        decoded = value;
      return true;
    }
    
    bool OurReader::decodeDouble(Token& token) {
      Value decoded;
      if (!decodeDouble(token, decoded))
        return false;
      currentValue().swapPayload(decoded);
      return true;
    }
    
    bool OurReader::decodeDouble(Token& token, Value& decoded) {
      double value = 0;
      const int bufferSize = 32;
      int count;
      int length = int(token.end_ - token.start_);
    
      // Sanity check to avoid buffer overflow exploits.
      if (length < 0) {
        return addError("Unable to parse token length", token);
      }
    
      // Avoid using a string constant for the format control string given to
      // sscanf, as this can cause hard to debug crashes on OS X. See here for more
      // info:
      //
      //     http://developer.apple.com/library/mac/#DOCUMENTATION/DeveloperTools/gcc-4.0.1/gcc/Incompatibilities.html
      char format[] = "%lf";
    
      if (length <= bufferSize) {
        Char buffer[bufferSize + 1];
        memcpy(buffer, token.start_, length);
        buffer[length] = 0;
        count = sscanf(buffer, format, &value);
      } else {
        std::string buffer(token.start_, token.end_);
        count = sscanf(buffer.c_str(), format, &value);
      }
    
      if (count != 1)
        return addError("'" + std::string(token.start_, token.end_) +
                            "' is not a number.",
                        token);
      decoded = value;
      return true;
    }
    
    bool OurReader::decodeString(Token& token) {
      std::string decoded_string;
      if (!decodeString(token, decoded_string))
        return false;
      Value decoded(decoded_string);
      currentValue().swapPayload(decoded);
      return true;
    }
    
    bool OurReader::decodeString(Token& token, std::string& decoded) {
      decoded.reserve(token.end_ - token.start_ - 2);
      Location current = token.start_ + 1; // skip '"'
      Location end = token.end_ - 1;       // do not include '"'
      while (current != end) {
        Char c = *current++;
        if (c == '"')
          break;
        else if (c == '\\') {
          if (current == end)
            return addError("Empty escape sequence in string", token, current);
          Char escape = *current++;
          switch (escape) {
          case '"':
            decoded += '"';
            break;
          case '/':
            decoded += '/';
            break;
          case '\\':
            decoded += '\\';
            break;
          case 'b':
            decoded += '\b';
            break;
          case 'f':
            decoded += '\f';
            break;
          case 'n':
            decoded += '\n';
            break;
          case 'r':
            decoded += '\r';
            break;
          case 't':
            decoded += '\t';
            break;
          case 'u': {
            unsigned int unicode;
            if (!decodeUnicodeCodePoint(token, current, end, unicode))
              return false;
            decoded += codePointToUTF8(unicode);
          } break;
          default:
            return addError("Bad escape sequence in string", token, current);
          }
        } else {
          decoded += c;
        }
      }
      return true;
    }
    
    bool OurReader::decodeUnicodeCodePoint(Token& token,
                                        Location& current,
                                        Location end,
                                        unsigned int& unicode) {
    
      if (!decodeUnicodeEscapeSequence(token, current, end, unicode))
        return false;
      if (unicode >= 0xD800 && unicode <= 0xDBFF) {
        // surrogate pairs
        if (end - current < 6)
          return addError(
              "additional six characters expected to parse unicode surrogate pair.",
              token,
              current);
        unsigned int surrogatePair;
        if (*(current++) == '\\' && *(current++) == 'u') {
          if (decodeUnicodeEscapeSequence(token, current, end, surrogatePair)) {
            unicode = 0x10000 + ((unicode & 0x3FF) << 10) + (surrogatePair & 0x3FF);
          } else
            return false;
        } else
          return addError("expecting another \\u token to begin the second half of "
                          "a unicode surrogate pair",
                          token,
                          current);
      }
      return true;
    }
    
    bool OurReader::decodeUnicodeEscapeSequence(Token& token,
                                             Location& current,
                                             Location end,
                                             unsigned int& unicode) {
      if (end - current < 4)
        return addError(
            "Bad unicode escape sequence in string: four digits expected.",
            token,
            current);
      unicode = 0;
      for (int index = 0; index < 4; ++index) {
        Char c = *current++;
        unicode *= 16;
        if (c >= '0' && c <= '9')
          unicode += c - '0';
        else if (c >= 'a' && c <= 'f')
          unicode += c - 'a' + 10;
        else if (c >= 'A' && c <= 'F')
          unicode += c - 'A' + 10;
        else
          return addError(
              "Bad unicode escape sequence in string: hexadecimal digit expected.",
              token,
              current);
      }
      return true;
    }
    
    bool
    OurReader::addError(const std::string& message, Token& token, Location extra) {
      ErrorInfo info;
      info.token_ = token;
      info.message_ = message;
      info.extra_ = extra;
      errors_.push_back(info);
      return false;
    }
    
    bool OurReader::recoverFromError(TokenType skipUntilToken) {
      int errorCount = int(errors_.size());
      Token skip;
      for (;;) {
        if (!readToken(skip))
          errors_.resize(errorCount); // discard errors caused by recovery
        if (skip.type_ == skipUntilToken || skip.type_ == tokenEndOfStream)
          break;
      }
      errors_.resize(errorCount);
      return false;
    }
    
    bool OurReader::addErrorAndRecover(const std::string& message,
                                    Token& token,
                                    TokenType skipUntilToken) {
      addError(message, token);
      return recoverFromError(skipUntilToken);
    }
    
    Value& OurReader::currentValue() { return *(nodes_.top()); }
    
    OurReader::Char OurReader::getNextChar() {
      if (current_ == end_)
        return 0;
      return *current_++;
    }
    
    void OurReader::getLocationLineAndColumn(Location location,
                                          int& line,
                                          int& column) const {
      Location current = begin_;
      Location lastLineStart = current;
      line = 0;
      while (current < location && current != end_) {
        Char c = *current++;
        if (c == '\r') {
          if (*current == '\n')
            ++current;
          lastLineStart = current;
          ++line;
        } else if (c == '\n') {
          lastLineStart = current;
          ++line;
        }
      }
      // column & line start at 1
      column = int(location - lastLineStart) + 1;
      ++line;
    }
    
    std::string OurReader::getLocationLineAndColumn(Location location) const {
      int line, column;
      getLocationLineAndColumn(location, line, column);
      char buffer[18 + 16 + 16 + 1];
    #if defined(_MSC_VER) && defined(__STDC_SECURE_LIB__)
    #if defined(WINCE)
      _snprintf(buffer, sizeof(buffer), "Line %d, Column %d", line, column);
    #else
      sprintf_s(buffer, sizeof(buffer), "Line %d, Column %d", line, column);
    #endif
    #else
      snprintf(buffer, sizeof(buffer), "Line %d, Column %d", line, column);
    #endif
      return buffer;
    }
    
    std::string OurReader::getFormattedErrorMessages() const {
      std::string formattedMessage;
      for (Errors::const_iterator itError = errors_.begin();
           itError != errors_.end();
           ++itError) {
        const ErrorInfo& error = *itError;
        formattedMessage +=
            "* " + getLocationLineAndColumn(error.token_.start_) + "\n";
        formattedMessage += "  " + error.message_ + "\n";
        if (error.extra_)
          formattedMessage +=
              "See " + getLocationLineAndColumn(error.extra_) + " for detail.\n";
      }
      return formattedMessage;
    }
    
    
    class OurCharReader : public CharReader {
      bool const collectComments_;
      OurReader reader_;
    public:
      OurCharReader(
        bool collectComments,
        OurFeatures const& features)
      : collectComments_(collectComments)
      , reader_(features)
      {}
      virtual bool parse(
          char const* beginDoc, char const* endDoc,
          Value* root, std::string* errs) {
        bool ok = reader_.parse(beginDoc, endDoc, *root, collectComments_);
        if (errs) {
          *errs = reader_.getFormattedErrorMessages();
        }
        return ok;
      }
    };
    
    CharReaderBuilder::CharReaderBuilder()
    {
      setDefaults(&settings_);
    }
    CharReaderBuilder::~CharReaderBuilder()
    {}
    CharReader* CharReaderBuilder::newCharReader() const
    {
      bool collectComments = settings_["collectComments"].asBool();
      OurFeatures features = OurFeatures::all();
      features.allowComments_ = settings_["allowComments"].asBool();
      features.strictRoot_ = settings_["strictRoot"].asBool();
      features.allowDroppedNullPlaceholders_ = settings_["allowDroppedNullPlaceholders"].asBool();
      features.allowNumericKeys_ = settings_["allowNumericKeys"].asBool();
      features.allowSingleQuotes_ = settings_["allowSingleQuotes"].asBool();
      features.stackLimit_ = settings_["stackLimit"].asInt();
      features.failIfExtra_ = settings_["failIfExtra"].asBool();
      features.rejectDupKeys_ = settings_["rejectDupKeys"].asBool();
      return new OurCharReader(collectComments, features);
    }
    static void getValidReaderKeys(std::set<std::string>* valid_keys)
    {
      valid_keys->clear();
      valid_keys->insert("collectComments");
      valid_keys->insert("allowComments");
      valid_keys->insert("strictRoot");
      valid_keys->insert("allowDroppedNullPlaceholders");
      valid_keys->insert("allowNumericKeys");
      valid_keys->insert("allowSingleQuotes");
      valid_keys->insert("stackLimit");
      valid_keys->insert("failIfExtra");
      valid_keys->insert("rejectDupKeys");
    }
    bool CharReaderBuilder::validate(Json::Value* invalid) const
    {
      Json::Value my_invalid;
      if (!invalid) invalid = &my_invalid;  // so we do not need to test for NULL
      Json::Value& inv = *invalid;
      std::set<std::string> valid_keys;
      getValidReaderKeys(&valid_keys);
      Value::Members keys = settings_.getMemberNames();
      size_t n = keys.size();
      for (size_t i = 0; i < n; ++i) {
        std::string const& key = keys[i];
        if (valid_keys.find(key) == valid_keys.end()) {
          inv[key] = settings_[key];
        }
      }
      return 0u == inv.size();
    }
    Value& CharReaderBuilder::operator[](std::string key)
    {
      return settings_[key];
    }
    // static
    void CharReaderBuilder::strictMode(Json::Value* settings)
    {
    //! [CharReaderBuilderStrictMode]
      (*settings)["allowComments"] = false;
      (*settings)["strictRoot"] = true;
      (*settings)["allowDroppedNullPlaceholders"] = false;
      (*settings)["allowNumericKeys"] = false;
      (*settings)["allowSingleQuotes"] = false;
      (*settings)["failIfExtra"] = true;
      (*settings)["rejectDupKeys"] = true;
    //! [CharReaderBuilderStrictMode]
    }
    // static
    void CharReaderBuilder::setDefaults(Json::Value* settings)
    {
    //! [CharReaderBuilderDefaults]
      (*settings)["collectComments"] = true;
      (*settings)["allowComments"] = true;
      (*settings)["strictRoot"] = false;
      (*settings)["allowDroppedNullPlaceholders"] = false;
      (*settings)["allowNumericKeys"] = false;
      (*settings)["allowSingleQuotes"] = false;
      (*settings)["stackLimit"] = 1000;
      (*settings)["failIfExtra"] = false;
      (*settings)["rejectDupKeys"] = false;
    //! [CharReaderBuilderDefaults]
    }
    
    //
    // global functions
    
    bool parseFromStream(
        CharReader::Factory const& fact, std::istream& sin,
        Value* root, std::string* errs)
    {
      std::ostringstream ssin;
      ssin << sin.rdbuf();
      std::string doc = ssin.str();
      char const* begin = doc.data();
      char const* end = begin + doc.size();
      // Note that we do not actually need a null-terminator.
      CharReaderPtr const reader(fact.newCharReader());
      return reader->parse(begin, end, root, errs);
    }
    
    std::istream& operator>>(std::istream& sin, Value& root) {
      CharReaderBuilder b;
      std::string errs;
      bool ok = parseFromStream(b, sin, &root, &errs);
      if (!ok) {
        fprintf(stderr,
                "Error from reader: %s",
                errs.c_str());
    
        throwRuntimeError("reader error");
      }
      return sin;
    }
    
    } // namespace Json
    
    // //
    // End of content of file: src/lib_json/json_reader.cpp
    // //
    
    
    
    
    
    
    // //
    // Beginning of content of file: src/lib_json/json_valueiterator.inl
    // //
    
    // Copyright 2007-2010 Baptiste Lepilleur
    // Distributed under MIT license, or public domain if desired and
    // recognized in your jurisdiction.
    // See file LICENSE for detail or copy at http://jsoncpp.sourceforge.net/LICENSE
    
    // included by json_value.cpp
    
    namespace Json {
    
    // //
    // //
    // //
    // class ValueIteratorBase
    // //
    // //
    // //
    
    ValueIteratorBase::ValueIteratorBase()
        : current_(), isNull_(true) {
    }
    
    ValueIteratorBase::ValueIteratorBase(
        const Value::ObjectValues::iterator& current)
        : current_(current), isNull_(false) {}
    
    Value& ValueIteratorBase::deref() const {
      return current_->second;
    }
    
    void ValueIteratorBase::increment() {
      ++current_;
    }
    
    void ValueIteratorBase::decrement() {
      --current_;
    }
    
    ValueIteratorBase::difference_type
    ValueIteratorBase::computeDistance(const SelfType& other) const {
    #ifdef JSON_USE_CPPTL_SMALLMAP
      return other.current_ - current_;
    #else
      // Iterator for null value are initialized using the default
      // constructor, which initialize current_ to the default
      // std::map::iterator. As begin() and end() are two instance
      // of the default std::map::iterator, they can not be compared.
      // To allow this, we handle this comparison specifically.
      if (isNull_ && other.isNull_) {
        return 0;
      }
    
      // Usage of std::distance is not portable (does not compile with Sun Studio 12
      // RogueWave STL,
      // which is the one used by default).
      // Using a portable hand-made version for non random iterator instead:
      //   return difference_type( std::distance( current_, other.current_ ) );
      difference_type myDistance = 0;
      for (Value::ObjectValues::iterator it = current_; it != other.current_;
           ++it) {
        ++myDistance;
      }
      return myDistance;
    #endif
    }
    
    bool ValueIteratorBase::isEqual(const SelfType& other) const {
      if (isNull_) {
        return other.isNull_;
      }
      return current_ == other.current_;
    }
    
    void ValueIteratorBase::copy(const SelfType& other) {
      current_ = other.current_;
      isNull_ = other.isNull_;
    }
    
    Value ValueIteratorBase::key() const {
      const Value::CZString czstring = (*current_).first;
      if (czstring.data()) {
        if (czstring.isStaticString())
          return Value(StaticString(czstring.data()));
        return Value(czstring.data(), czstring.data() + czstring.length());
      }
      return Value(czstring.index());
    }
    
    UInt ValueIteratorBase::index() const {
      const Value::CZString czstring = (*current_).first;
      if (!czstring.data())
        return czstring.index();
      return Value::UInt(-1);
    }
    
    std::string ValueIteratorBase::name() const {
      char const* keey;
      char const* end;
      keey = memberName(&end);
      if (!keey) return std::string();
      return std::string(keey, end);
    }
    
    char const* ValueIteratorBase::memberName() const {
      const char* cname = (*current_).first.data();
      return cname ? cname : "";
    }
    
    char const* ValueIteratorBase::memberName(char const** end) const {
      const char* cname = (*current_).first.data();
      if (!cname) {
        *end = NULL;
        return NULL;
      }
      *end = cname + (*current_).first.length();
      return cname;
    }
    
    // //
    // //
    // //
    // class ValueConstIterator
    // //
    // //
    // //
    
    ValueConstIterator::ValueConstIterator() {}
    
    ValueConstIterator::ValueConstIterator(
        const Value::ObjectValues::iterator& current)
        : ValueIteratorBase(current) {}
    
    ValueConstIterator& ValueConstIterator::
    operator=(const ValueIteratorBase& other) {
      copy(other);
      return *this;
    }
    
    // //
    // //
    // //
    // class ValueIterator
    // //
    // //
    // //
    
    ValueIterator::ValueIterator() {}
    
    ValueIterator::ValueIterator(const Value::ObjectValues::iterator& current)
        : ValueIteratorBase(current) {}
    
    ValueIterator::ValueIterator(const ValueConstIterator& other)
        : ValueIteratorBase(other) {}
    
    ValueIterator::ValueIterator(const ValueIterator& other)
        : ValueIteratorBase(other) {}
    
    ValueIterator& ValueIterator::operator=(const SelfType& other) {
      copy(other);
      return *this;
    }
    
    } // namespace Json
    
    // //
    // End of content of file: src/lib_json/json_valueiterator.inl
    // //
    
    
    
    
    
    
    // //
    // Beginning of content of file: src/lib_json/json_value.cpp
    // //
    
    // Copyright 2011 Baptiste Lepilleur
    // Distributed under MIT license, or public domain if desired and
    // recognized in your jurisdiction.
    // See file LICENSE for detail or copy at http://jsoncpp.sourceforge.net/LICENSE
    
    #if !defined(JSON_IS_AMALGAMATION)
    #include <json/assertions.h>
    #include <json/value.h>
    #include <json/writer.h>
    #endif // if !defined(JSON_IS_AMALGAMATION)
    #include <math.h>
    #include <sstream>
    #include <utility>
    #include <cstring>
    #include <cassert>
    #ifdef JSON_USE_CPPTL
    #include <cpptl/conststring.h>
    #endif
    #include <cstddef> // size_t
    #include <algorithm> // min()
    
    #define JSON_ASSERT_UNREACHABLE assert(false)
    
    namespace Json {
    
    // This is a walkaround to avoid the static initialization of Value::null.
    // kNull must be word-aligned to avoid crashing on ARM.  We use an alignment of
    // 8 (instead of 4) as a bit of future-proofing.
    #if defined(__ARMEL__)
    #define ALIGNAS(byte_alignment) __attribute__((aligned(byte_alignment)))
    #else
    // This exists for binary compatibility only. Use nullRef.
    const Value Value::null;
    #define ALIGNAS(byte_alignment)
    #endif
    static const unsigned char ALIGNAS(8) kNull[sizeof(Value)] = { 0 };
    const unsigned char& kNullRef = kNull[0];
    const Value& Value::nullRef = reinterpret_cast<const Value&>(kNullRef);
    
    const Int Value::minInt = Int(~(UInt(-1) / 2));
    const Int Value::maxInt = Int(UInt(-1) / 2);
    const UInt Value::maxUInt = UInt(-1);
    #if defined(JSON_HAS_INT64)
    const Int64 Value::minInt64 = Int64(~(UInt64(-1) / 2));
    const Int64 Value::maxInt64 = Int64(UInt64(-1) / 2);
    const UInt64 Value::maxUInt64 = UInt64(-1);
    // The constant is hard-coded because some compiler have trouble
    // converting Value::maxUInt64 to a double correctly (AIX/xlC).
    // Assumes that UInt64 is a 64 bits integer.
    static const double maxUInt64AsDouble = 18446744073709551615.0;
    #endif // defined(JSON_HAS_INT64)
    const LargestInt Value::minLargestInt = LargestInt(~(LargestUInt(-1) / 2));
    const LargestInt Value::maxLargestInt = LargestInt(LargestUInt(-1) / 2);
    const LargestUInt Value::maxLargestUInt = LargestUInt(-1);
    
    #if !defined(JSON_USE_INT64_DOUBLE_CONVERSION)
    template <typename T, typename U>
    static inline bool InRange(double d, T min, U max) {
      return d >= min && d <= max;
    }
    #else  // if !defined(JSON_USE_INT64_DOUBLE_CONVERSION)
    static inline double integerToDouble(Json::UInt64 value) {
      return static_cast<double>(Int64(value / 2)) * 2.0 + Int64(value & 1);
    }
    
    template <typename T> static inline double integerToDouble(T value) {
      return static_cast<double>(value);
    }
    
    template <typename T, typename U>
    static inline bool InRange(double d, T min, U max) {
      return d >= integerToDouble(min) && d <= integerToDouble(max);
    }
    #endif // if !defined(JSON_USE_INT64_DOUBLE_CONVERSION)
    
    /** Duplicates the specified string value.
     * @param value Pointer to the string to duplicate. Must be zero-terminated if
     *              length is "unknown".
     * @param length Length of the value. if equals to unknown, then it will be
     *               computed using strlen(value).
     * @return Pointer on the duplicate instance of string.
     */
    static inline char* duplicateStringValue(const char* value,
                                             size_t length) {
      // Avoid an integer overflow in the call to malloc below by limiting length
      // to a sane value.
      if (length >= (size_t)Value::maxInt)
        length = Value::maxInt - 1;
    
      char* newString = static_cast<char*>(malloc(length + 1));
      if (newString == NULL) {
        throwRuntimeError(
            "in Json::Value::duplicateStringValue(): "
            "Failed to allocate string value buffer");
      }
      memcpy(newString, value, length);
      newString[length] = 0;
      return newString;
    }
    
    /* Record the length as a prefix.
     */
    static inline char* duplicateAndPrefixStringValue(
        const char* value,
        unsigned int length)
    {
      // Avoid an integer overflow in the call to malloc below by limiting length
      // to a sane value.
      JSON_ASSERT_MESSAGE(length <= (unsigned)Value::maxInt - sizeof(unsigned) - 1U,
                          "in Json::Value::duplicateAndPrefixStringValue(): "
                          "length too big for prefixing");
      unsigned actualLength = length + static_cast<unsigned>(sizeof(unsigned)) + 1U;
      char* newString = static_cast<char*>(malloc(actualLength));
      if (newString == 0) {
        throwRuntimeError(
            "in Json::Value::duplicateAndPrefixStringValue(): "
            "Failed to allocate string value buffer");
      }
      *reinterpret_cast<unsigned*>(newString) = length;
      memcpy(newString + sizeof(unsigned), value, length);
      newString[actualLength - 1U] = 0; // to avoid buffer over-run accidents by users later
      return newString;
    }
    inline static void decodePrefixedString(
        bool isPrefixed, char const* prefixed,
        unsigned* length, char const** value)
    {
      if (!isPrefixed) {
        *length = static_cast<unsigned>(strlen(prefixed));
        *value = prefixed;
      } else {
        *length = *reinterpret_cast<unsigned const*>(prefixed);
        *value = prefixed + sizeof(unsigned);
      }
    }
    /** Free the string duplicated by duplicateStringValue()/duplicateAndPrefixStringValue().
     */
    static inline void releaseStringValue(char* value) { free(value); }
    
    } // namespace Json
    
    // //
    // //
    // //
    // ValueInternals...
    // //
    // //
    // //
    #if !defined(JSON_IS_AMALGAMATION)
    
    #include "json_valueiterator.inl"
    #endif // if !defined(JSON_IS_AMALGAMATION)
    
    namespace Json {
    
    Exception::Exception(std::string const& msg)
      : msg_(msg)
    {}
    Exception::~Exception() throw()
    {}
    char const* Exception::what() const throw()
    {
      return msg_.c_str();
    }
    RuntimeError::RuntimeError(std::string const& msg)
      : Exception(msg)
    {}
    LogicError::LogicError(std::string const& msg)
      : Exception(msg)
    {}
    void throwRuntimeError(std::string const& msg)
    {
      throw RuntimeError(msg);
    }
    void throwLogicError(std::string const& msg)
    {
      throw LogicError(msg);
    }
    
    // //
    // //
    // //
    // class Value::CommentInfo
    // //
    // //
    // //
    
    Value::CommentInfo::CommentInfo() : comment_(0) {}
    
    Value::CommentInfo::~CommentInfo() {
      if (comment_)
        releaseStringValue(comment_);
    }
    
    void Value::CommentInfo::setComment(const char* text, size_t len) {
      if (comment_) {
        releaseStringValue(comment_);
        comment_ = 0;
      }
      JSON_ASSERT(text != 0);
      JSON_ASSERT_MESSAGE(
          text[0] == '\0' || text[0] == '/',
          "in Json::Value::setComment(): Comments must start with /");
      // It seems that /**/ style comments are acceptable as well.
      comment_ = duplicateStringValue(text, len);
    }
    
    // //
    // //
    // //
    // class Value::CZString
    // //
    // //
    // //
    
    // Notes: policy_ indicates if the string was allocated when
    // a string is stored.
    
    Value::CZString::CZString(ArrayIndex aindex) : cstr_(0), index_(aindex) {}
    
    Value::CZString::CZString(char const* str, unsigned ulength, DuplicationPolicy allocate)
        : cstr_(str)
    {
      // allocate != duplicate
      storage_.policy_ = allocate & 0x3;
      storage_.length_ = ulength & 0x3FFFFFFF;
    }
    
    Value::CZString::CZString(const CZString& other)
        : cstr_(other.storage_.policy_ != noDuplication && other.cstr_ != 0
                    ? duplicateStringValue(other.cstr_, other.storage_.length_)
                    : other.cstr_)
    {
      storage_.policy_ = (other.cstr_
                     ? (static_cast<DuplicationPolicy>(other.storage_.policy_) == noDuplication
                         ? noDuplication : duplicate)
                     : static_cast<DuplicationPolicy>(other.storage_.policy_));
      storage_.length_ = other.storage_.length_;
    }
    
    Value::CZString::~CZString() {
      if (cstr_ && storage_.policy_ == duplicate)
        releaseStringValue(const_cast<char*>(cstr_));
    }
    
    void Value::CZString::swap(CZString& other) {
      std::swap(cstr_, other.cstr_);
      std::swap(index_, other.index_);
    }
    
    Value::CZString& Value::CZString::operator=(CZString other) {
      swap(other);
      return *this;
    }
    
    bool Value::CZString::operator<(const CZString& other) const {
      if (!cstr_) return index_ < other.index_;
      //return strcmp(cstr_, other.cstr_) < 0;
      // Assume both are strings.
      unsigned this_len = this->storage_.length_;
      unsigned other_len = other.storage_.length_;
      unsigned min_len = std::min(this_len, other_len);
      int comp = memcmp(this->cstr_, other.cstr_, min_len);
      if (comp < 0) return true;
      if (comp > 0) return false;
      return (this_len < other_len);
    }
    
    bool Value::CZString::operator==(const CZString& other) const {
      if (!cstr_) return index_ == other.index_;
      //return strcmp(cstr_, other.cstr_) == 0;
      // Assume both are strings.
      unsigned this_len = this->storage_.length_;
      unsigned other_len = other.storage_.length_;
      if (this_len != other_len) return false;
      int comp = memcmp(this->cstr_, other.cstr_, this_len);
      return comp == 0;
    }
    
    ArrayIndex Value::CZString::index() const { return index_; }
    
    //const char* Value::CZString::c_str() const { return cstr_; }
    const char* Value::CZString::data() const { return cstr_; }
    unsigned Value::CZString::length() const { return storage_.length_; }
    bool Value::CZString::isStaticString() const { return storage_.policy_ == noDuplication; }
    
    // //
    // //
    // //
    // class Value::Value
    // //
    // //
    // //
    
    /*! \internal Default constructor initialization must be equivalent to:
     * memset( this, 0, sizeof(Value) )
     * This optimization is used in ValueInternalMap fast allocator.
     */
    Value::Value(ValueType vtype) {
      initBasic(vtype);
      switch (vtype) {
      case nullValue:
        break;
      case intValue:
      case uintValue:
        value_.int_ = 0;
        break;
      case realValue:
        value_.real_ = 0.0;
        break;
      case stringValue:
        value_.string_ = 0;
        break;
      case arrayValue:
      case objectValue:
        value_.map_ = new ObjectValues();
        break;
      case booleanValue:
        value_.bool_ = false;
        break;
      default:
        JSON_ASSERT_UNREACHABLE;
      }
    }
    
    Value::Value(Int value) {
      initBasic(intValue);
      value_.int_ = value;
    }
    
    Value::Value(UInt value) {
      initBasic(uintValue);
      value_.uint_ = value;
    }
    #if defined(JSON_HAS_INT64)
    Value::Value(Int64 value) {
      initBasic(intValue);
      value_.int_ = value;
    }
    Value::Value(UInt64 value) {
      initBasic(uintValue);
      value_.uint_ = value;
    }
    #endif // defined(JSON_HAS_INT64)
    
    Value::Value(double value) {
      initBasic(realValue);
      value_.real_ = value;
    }
    
    Value::Value(const char* value) {
      initBasic(stringValue, true);
      value_.string_ = duplicateAndPrefixStringValue(value, static_cast<unsigned>(strlen(value)));
    }
    
    Value::Value(const char* beginValue, const char* endValue) {
      initBasic(stringValue, true);
      value_.string_ =
          duplicateAndPrefixStringValue(beginValue, static_cast<unsigned>(endValue - beginValue));
    }
    
    Value::Value(const std::string& value) {
      initBasic(stringValue, true);
      value_.string_ =
          duplicateAndPrefixStringValue(value.data(), static_cast<unsigned>(value.length()));
    }
    
    Value::Value(const StaticString& value) {
      initBasic(stringValue);
      value_.string_ = const_cast<char*>(value.c_str());
    }
    
    #ifdef JSON_USE_CPPTL
    Value::Value(const CppTL::ConstString& value) {
      initBasic(stringValue, true);
      value_.string_ = duplicateAndPrefixStringValue(value, static_cast<unsigned>(value.length()));
    }
    #endif
    
    Value::Value(bool value) {
      initBasic(booleanValue);
      value_.bool_ = value;
    }
    
    Value::Value(Value const& other)
        : type_(other.type_), allocated_(false)
          ,
          comments_(0)
    {
      switch (type_) {
      case nullValue:
      case intValue:
      case uintValue:
      case realValue:
      case booleanValue:
        value_ = other.value_;
        break;
      case stringValue:
        if (other.value_.string_ && other.allocated_) {
          unsigned len;
          char const* str;
          decodePrefixedString(other.allocated_, other.value_.string_,
              &len, &str);
          value_.string_ = duplicateAndPrefixStringValue(str, len);
          allocated_ = true;
        } else {
          value_.string_ = other.value_.string_;
          allocated_ = false;
        }
        break;
      case arrayValue:
      case objectValue:
        value_.map_ = new ObjectValues(*other.value_.map_);
        break;
      default:
        JSON_ASSERT_UNREACHABLE;
      }
      if (other.comments_) {
        comments_ = new CommentInfo[numberOfCommentPlacement];
        for (int comment = 0; comment < numberOfCommentPlacement; ++comment) {
          const CommentInfo& otherComment = other.comments_[comment];
          if (otherComment.comment_)
            comments_[comment].setComment(
                otherComment.comment_, strlen(otherComment.comment_));
        }
      }
    }
    
    Value::~Value() {
      switch (type_) {
      case nullValue:
      case intValue:
      case uintValue:
      case realValue:
      case booleanValue:
        break;
      case stringValue:
        if (allocated_)
          releaseStringValue(value_.string_);
        break;
      case arrayValue:
      case objectValue:
        delete value_.map_;
        break;
      default:
        JSON_ASSERT_UNREACHABLE;
      }
    
      if (comments_)
        delete[] comments_;
    }
    
    Value &Value::operator=(const Value &other) {
      Value temp(other);
      swap(temp);
      return *this;
    }
    
    void Value::swapPayload(Value& other) {
      ValueType temp = type_;
      type_ = other.type_;
      other.type_ = temp;
      std::swap(value_, other.value_);
      int temp2 = allocated_;
      allocated_ = other.allocated_;
      other.allocated_ = temp2 & 0x1;
    }
    
    void Value::swap(Value& other) {
      swapPayload(other);
      std::swap(comments_, other.comments_);
    }
    
    ValueType Value::type() const { return type_; }
    
    int Value::compare(const Value& other) const {
      if (*this < other)
        return -1;
      if (*this > other)
        return 1;
      return 0;
    }
    
    bool Value::operator<(const Value& other) const {
      int typeDelta = type_ - other.type_;
      if (typeDelta)
        return typeDelta < 0 ? true : false;
      switch (type_) {
      case nullValue:
        return false;
      case intValue:
        return value_.int_ < other.value_.int_;
      case uintValue:
        return value_.uint_ < other.value_.uint_;
      case realValue:
        return value_.real_ < other.value_.real_;
      case booleanValue:
        return value_.bool_ < other.value_.bool_;
      case stringValue:
      {
        if ((value_.string_ == 0) || (other.value_.string_ == 0)) {
          if (other.value_.string_) return true;
          else return false;
        }
        unsigned this_len;
        unsigned other_len;
        char const* this_str;
        char const* other_str;
        decodePrefixedString(this->allocated_, this->value_.string_, &this_len, &this_str);
        decodePrefixedString(other.allocated_, other.value_.string_, &other_len, &other_str);
        unsigned min_len = std::min(this_len, other_len);
        int comp = memcmp(this_str, other_str, min_len);
        if (comp < 0) return true;
        if (comp > 0) return false;
        return (this_len < other_len);
      }
      case arrayValue:
      case objectValue: {
        int delta = int(value_.map_->size() - other.value_.map_->size());
        if (delta)
          return delta < 0;
        return (*value_.map_) < (*other.value_.map_);
      }
      default:
        JSON_ASSERT_UNREACHABLE;
      }
      return false; // unreachable
    }
    
    bool Value::operator<=(const Value& other) const { return !(other < *this); }
    
    bool Value::operator>=(const Value& other) const { return !(*this < other); }
    
    bool Value::operator>(const Value& other) const { return other < *this; }
    
    bool Value::operator==(const Value& other) const {
      // if ( type_ != other.type_ )
      // GCC 2.95.3 says:
      // attempt to take address of bit-field structure member `Json::Value::type_'
      // Beats me, but a temp solves the problem.
      int temp = other.type_;
      if (type_ != temp)
        return false;
      switch (type_) {
      case nullValue:
        return true;
      case intValue:
        return value_.int_ == other.value_.int_;
      case uintValue:
        return value_.uint_ == other.value_.uint_;
      case realValue:
        return value_.real_ == other.value_.real_;
      case booleanValue:
        return value_.bool_ == other.value_.bool_;
      case stringValue:
      {
        if ((value_.string_ == 0) || (other.value_.string_ == 0)) {
          return (value_.string_ == other.value_.string_);
        }
        unsigned this_len;
        unsigned other_len;
        char const* this_str;
        char const* other_str;
        decodePrefixedString(this->allocated_, this->value_.string_, &this_len, &this_str);
        decodePrefixedString(other.allocated_, other.value_.string_, &other_len, &other_str);
        if (this_len != other_len) return false;
        int comp = memcmp(this_str, other_str, this_len);
        return comp == 0;
      }
      case arrayValue:
      case objectValue:
        return value_.map_->size() == other.value_.map_->size() &&
               (*value_.map_) == (*other.value_.map_);
      default:
        JSON_ASSERT_UNREACHABLE;
      }
      return false; // unreachable
    }
    
    bool Value::operator!=(const Value& other) const { return !(*this == other); }
    
    const char* Value::asCString() const {
      JSON_ASSERT_MESSAGE(type_ == stringValue,
                          "in Json::Value::asCString(): requires stringValue");
      if (value_.string_ == 0) return 0;
      unsigned this_len;
      char const* this_str;
      decodePrefixedString(this->allocated_, this->value_.string_, &this_len, &this_str);
      return this_str;
    }
    
    bool Value::getString(char const** str, char const** cend) const {
      if (type_ != stringValue) return false;
      if (value_.string_ == 0) return false;
      unsigned length;
      decodePrefixedString(this->allocated_, this->value_.string_, &length, str);
      *cend = *str + length;
      return true;
    }
    
    std::string Value::asString() const {
      switch (type_) {
      case nullValue:
        return "";
      case stringValue:
      {
        if (value_.string_ == 0) return "";
        unsigned this_len;
        char const* this_str;
        decodePrefixedString(this->allocated_, this->value_.string_, &this_len, &this_str);
        return std::string(this_str, this_len);
      }
      case booleanValue:
        return value_.bool_ ? "true" : "false";
      case intValue:
        return valueToString(value_.int_);
      case uintValue:
        return valueToString(value_.uint_);
      case realValue:
        return valueToString(value_.real_);
      default:
        JSON_FAIL_MESSAGE("Type is not convertible to string");
      }
    }
    
    #ifdef JSON_USE_CPPTL
    CppTL::ConstString Value::asConstString() const {
      unsigned len;
      char const* str;
      decodePrefixedString(allocated_, value_.string_,
          &len, &str);
      return CppTL::ConstString(str, len);
    }
    #endif
    
    Value::Int Value::asInt() const {
      switch (type_) {
      case intValue:
        JSON_ASSERT_MESSAGE(isInt(), "LargestInt out of Int range");
        return Int(value_.int_);
      case uintValue:
        JSON_ASSERT_MESSAGE(isInt(), "LargestUInt out of Int range");
        return Int(value_.uint_);
      case realValue:
        JSON_ASSERT_MESSAGE(InRange(value_.real_, minInt, maxInt),
                            "double out of Int range");
        return Int(value_.real_);
      case nullValue:
        return 0;
      case booleanValue:
        return value_.bool_ ? 1 : 0;
      default:
        break;
      }
      JSON_FAIL_MESSAGE("Value is not convertible to Int.");
    }
    
    Value::UInt Value::asUInt() const {
      switch (type_) {
      case intValue:
        JSON_ASSERT_MESSAGE(isUInt(), "LargestInt out of UInt range");
        return UInt(value_.int_);
      case uintValue:
        JSON_ASSERT_MESSAGE(isUInt(), "LargestUInt out of UInt range");
        return UInt(value_.uint_);
      case realValue:
        JSON_ASSERT_MESSAGE(InRange(value_.real_, 0, maxUInt),
                            "double out of UInt range");
        return UInt(value_.real_);
      case nullValue:
        return 0;
      case booleanValue:
        return value_.bool_ ? 1 : 0;
      default:
        break;
      }
      JSON_FAIL_MESSAGE("Value is not convertible to UInt.");
    }
    
    #if defined(JSON_HAS_INT64)
    
    Value::Int64 Value::asInt64() const {
      switch (type_) {
      case intValue:
        return Int64(value_.int_);
      case uintValue:
        JSON_ASSERT_MESSAGE(isInt64(), "LargestUInt out of Int64 range");
        return Int64(value_.uint_);
      case realValue:
        JSON_ASSERT_MESSAGE(InRange(value_.real_, minInt64, maxInt64),
                            "double out of Int64 range");
        return Int64(value_.real_);
      case nullValue:
        return 0;
      case booleanValue:
        return value_.bool_ ? 1 : 0;
      default:
        break;
      }
      JSON_FAIL_MESSAGE("Value is not convertible to Int64.");
    }
    
    Value::UInt64 Value::asUInt64() const {
      switch (type_) {
      case intValue:
        JSON_ASSERT_MESSAGE(isUInt64(), "LargestInt out of UInt64 range");
        return UInt64(value_.int_);
      case uintValue:
        return UInt64(value_.uint_);
      case realValue:
        JSON_ASSERT_MESSAGE(InRange(value_.real_, 0, maxUInt64),
                            "double out of UInt64 range");
        return UInt64(value_.real_);
      case nullValue:
        return 0;
      case booleanValue:
        return value_.bool_ ? 1 : 0;
      default:
        break;
      }
      JSON_FAIL_MESSAGE("Value is not convertible to UInt64.");
    }
    #endif // if defined(JSON_HAS_INT64)
    
    LargestInt Value::asLargestInt() const {
    #if defined(JSON_NO_INT64)
      return asInt();
    #else
      return asInt64();
    #endif
    }
    
    LargestUInt Value::asLargestUInt() const {
    #if defined(JSON_NO_INT64)
      return asUInt();
    #else
      return asUInt64();
    #endif
    }
    
    double Value::asDouble() const {
      switch (type_) {
      case intValue:
        return static_cast<double>(value_.int_);
      case uintValue:
    #if !defined(JSON_USE_INT64_DOUBLE_CONVERSION)
        return static_cast<double>(value_.uint_);
    #else  // if !defined(JSON_USE_INT64_DOUBLE_CONVERSION)
        return integerToDouble(value_.uint_);
    #endif // if !defined(JSON_USE_INT64_DOUBLE_CONVERSION)
      case realValue:
        return value_.real_;
      case nullValue:
        return 0.0;
      case booleanValue:
        return value_.bool_ ? 1.0 : 0.0;
      default:
        break;
      }
      JSON_FAIL_MESSAGE("Value is not convertible to double.");
    }
    
    float Value::asFloat() const {
      switch (type_) {
      case intValue:
        return static_cast<float>(value_.int_);
      case uintValue:
    #if !defined(JSON_USE_INT64_DOUBLE_CONVERSION)
        return static_cast<float>(value_.uint_);
    #else  // if !defined(JSON_USE_INT64_DOUBLE_CONVERSION)
        return integerToDouble(value_.uint_);
    #endif // if !defined(JSON_USE_INT64_DOUBLE_CONVERSION)
      case realValue:
        return static_cast<float>(value_.real_);
      case nullValue:
        return 0.0;
      case booleanValue:
        return value_.bool_ ? 1.0f : 0.0f;
      default:
        break;
      }
      JSON_FAIL_MESSAGE("Value is not convertible to float.");
    }
    
    bool Value::asBool() const {
      switch (type_) {
      case booleanValue:
        return value_.bool_;
      case nullValue:
        return false;
      case intValue:
        return value_.int_ ? true : false;
      case uintValue:
        return value_.uint_ ? true : false;
      case realValue:
        // This is kind of strange. Not recommended.
        return (value_.real_ != 0.0) ? true : false;
      default:
        break;
      }
      JSON_FAIL_MESSAGE("Value is not convertible to bool.");
    }
    
    bool Value::isConvertibleTo(ValueType other) const {
      switch (other) {
      case nullValue:
        return (isNumeric() && asDouble() == 0.0) ||
               (type_ == booleanValue && value_.bool_ == false) ||
               (type_ == stringValue && asString() == "") ||
               (type_ == arrayValue && value_.map_->size() == 0) ||
               (type_ == objectValue && value_.map_->size() == 0) ||
               type_ == nullValue;
      case intValue:
        return isInt() ||
               (type_ == realValue && InRange(value_.real_, minInt, maxInt)) ||
               type_ == booleanValue || type_ == nullValue;
      case uintValue:
        return isUInt() ||
               (type_ == realValue && InRange(value_.real_, 0, maxUInt)) ||
               type_ == booleanValue || type_ == nullValue;
      case realValue:
        return isNumeric() || type_ == booleanValue || type_ == nullValue;
      case booleanValue:
        return isNumeric() || type_ == booleanValue || type_ == nullValue;
      case stringValue:
        return isNumeric() || type_ == booleanValue || type_ == stringValue ||
               type_ == nullValue;
      case arrayValue:
        return type_ == arrayValue || type_ == nullValue;
      case objectValue:
        return type_ == objectValue || type_ == nullValue;
      }
      JSON_ASSERT_UNREACHABLE;
      return false;
    }
    
    /// Number of values in array or object
    ArrayIndex Value::size() const {
      switch (type_) {
      case nullValue:
      case intValue:
      case uintValue:
      case realValue:
      case booleanValue:
      case stringValue:
        return 0;
      case arrayValue: // size of the array is highest index + 1
        if (!value_.map_->empty()) {
          ObjectValues::const_iterator itLast = value_.map_->end();
          --itLast;
          return (*itLast).first.index() + 1;
        }
        return 0;
      case objectValue:
        return ArrayIndex(value_.map_->size());
      }
      JSON_ASSERT_UNREACHABLE;
      return 0; // unreachable;
    }
    
    bool Value::empty() const {
      if (isNull() || isArray() || isObject())
        return size() == 0u;
      else
        return false;
    }
    
    bool Value::operator!() const { return isNull(); }
    
    void Value::clear() {
      JSON_ASSERT_MESSAGE(type_ == nullValue || type_ == arrayValue ||
                              type_ == objectValue,
                          "in Json::Value::clear(): requires complex value");
      switch (type_) {
      case arrayValue:
      case objectValue:
        value_.map_->clear();
        break;
      default:
        break;
      }
    }
    
    void Value::resize(ArrayIndex newSize) {
      JSON_ASSERT_MESSAGE(type_ == nullValue || type_ == arrayValue,
                          "in Json::Value::resize(): requires arrayValue");
      if (type_ == nullValue)
        *this = Value(arrayValue);
      ArrayIndex oldSize = size();
      if (newSize == 0)
        clear();
      else if (newSize > oldSize)
        (*this)[newSize - 1];
      else {
        for (ArrayIndex index = newSize; index < oldSize; ++index) {
          value_.map_->erase(index);
        }
        assert(size() == newSize);
      }
    }
    
    Value& Value::operator[](ArrayIndex index) {
      JSON_ASSERT_MESSAGE(
          type_ == nullValue || type_ == arrayValue,
          "in Json::Value::operator[](ArrayIndex): requires arrayValue");
      if (type_ == nullValue)
        *this = Value(arrayValue);
      CZString key(index);
      ObjectValues::iterator it = value_.map_->lower_bound(key);
      if (it != value_.map_->end() && (*it).first == key)
        return (*it).second;
    
      ObjectValues::value_type defaultValue(key, nullRef);
      it = value_.map_->insert(it, defaultValue);
      return (*it).second;
    }
    
    Value& Value::operator[](int index) {
      JSON_ASSERT_MESSAGE(
          index >= 0,
          "in Json::Value::operator[](int index): index cannot be negative");
      return (*this)[ArrayIndex(index)];
    }
    
    const Value& Value::operator[](ArrayIndex index) const {
      JSON_ASSERT_MESSAGE(
          type_ == nullValue || type_ == arrayValue,
          "in Json::Value::operator[](ArrayIndex)const: requires arrayValue");
      if (type_ == nullValue)
        return nullRef;
      CZString key(index);
      ObjectValues::const_iterator it = value_.map_->find(key);
      if (it == value_.map_->end())
        return nullRef;
      return (*it).second;
    }
    
    const Value& Value::operator[](int index) const {
      JSON_ASSERT_MESSAGE(
          index >= 0,
          "in Json::Value::operator[](int index) const: index cannot be negative");
      return (*this)[ArrayIndex(index)];
    }
    
    void Value::initBasic(ValueType vtype, bool allocated) {
      type_ = vtype;
      allocated_ = allocated;
      comments_ = 0;
    }
    
    // Access an object value by name, create a null member if it does not exist.
    // @pre Type of '*this' is object or null.
    // @param key is null-terminated.
    Value& Value::resolveReference(const char* key) {
      JSON_ASSERT_MESSAGE(
          type_ == nullValue || type_ == objectValue,
          "in Json::Value::resolveReference(): requires objectValue");
      if (type_ == nullValue)
        *this = Value(objectValue);
      CZString actualKey(
          key, static_cast<unsigned>(strlen(key)), CZString::noDuplication); // NOTE!
      ObjectValues::iterator it = value_.map_->lower_bound(actualKey);
      if (it != value_.map_->end() && (*it).first == actualKey)
        return (*it).second;
    
      ObjectValues::value_type defaultValue(actualKey, nullRef);
      it = value_.map_->insert(it, defaultValue);
      Value& value = (*it).second;
      return value;
    }
    
    // @param key is not null-terminated.
    Value& Value::resolveReference(char const* key, char const* cend)
    {
      JSON_ASSERT_MESSAGE(
          type_ == nullValue || type_ == objectValue,
          "in Json::Value::resolveReference(key, end): requires objectValue");
      if (type_ == nullValue)
        *this = Value(objectValue);
      CZString actualKey(
          key, static_cast<unsigned>(cend-key), CZString::duplicateOnCopy);
      ObjectValues::iterator it = value_.map_->lower_bound(actualKey);
      if (it != value_.map_->end() && (*it).first == actualKey)
        return (*it).second;
    
      ObjectValues::value_type defaultValue(actualKey, nullRef);
      it = value_.map_->insert(it, defaultValue);
      Value& value = (*it).second;
      return value;
    }
    
    Value Value::get(ArrayIndex index, const Value& defaultValue) const {
      const Value* value = &((*this)[index]);
      return value == &nullRef ? defaultValue : *value;
    }
    
    bool Value::isValidIndex(ArrayIndex index) const { return index < size(); }
    
    Value const* Value::find(char const* key, char const* cend) const
    {
      JSON_ASSERT_MESSAGE(
          type_ == nullValue || type_ == objectValue,
          "in Json::Value::find(key, end, found): requires objectValue or nullValue");
      if (type_ == nullValue) return NULL;
      CZString actualKey(key, static_cast<unsigned>(cend-key), CZString::noDuplication);
      ObjectValues::const_iterator it = value_.map_->find(actualKey);
      if (it == value_.map_->end()) return NULL;
      return &(*it).second;
    }
    const Value& Value::operator[](const char* key) const
    {
      Value const* found = find(key, key + strlen(key));
      if (!found) return nullRef;
      return *found;
    }
    Value const& Value::operator[](std::string const& key) const
    {
      Value const* found = find(key.data(), key.data() + key.length());
      if (!found) return nullRef;
      return *found;
    }
    
    Value& Value::operator[](const char* key) {
      return resolveReference(key, key + strlen(key));
    }
    
    Value& Value::operator[](const std::string& key) {
      return resolveReference(key.data(), key.data() + key.length());
    }
    
    Value& Value::operator[](const StaticString& key) {
      return resolveReference(key.c_str());
    }
    
    #ifdef JSON_USE_CPPTL
    Value& Value::operator[](const CppTL::ConstString& key) {
      return resolveReference(key.c_str(), key.end_c_str());
    }
    Value const& Value::operator[](CppTL::ConstString const& key) const
    {
      Value const* found = find(key.c_str(), key.end_c_str());
      if (!found) return nullRef;
      return *found;
    }
    #endif
    
    Value& Value::append(const Value& value) { return (*this)[size()] = value; }
    
    Value Value::get(char const* key, char const* cend, Value const& defaultValue) const
    {
      Value const* found = find(key, cend);
      return !found ? defaultValue : *found;
    }
    Value Value::get(char const* key, Value const& defaultValue) const
    {
      return get(key, key + strlen(key), defaultValue);
    }
    Value Value::get(std::string const& key, Value const& defaultValue) const
    {
      return get(key.data(), key.data() + key.length(), defaultValue);
    }
    
    
    bool Value::removeMember(const char* key, const char* cend, Value* removed)
    {
      if (type_ != objectValue) {
        return false;
      }
      CZString actualKey(key, static_cast<unsigned>(cend-key), CZString::noDuplication);
      ObjectValues::iterator it = value_.map_->find(actualKey);
      if (it == value_.map_->end())
        return false;
      *removed = it->second;
      value_.map_->erase(it);
      return true;
    }
    bool Value::removeMember(const char* key, Value* removed)
    {
      return removeMember(key, key + strlen(key), removed);
    }
    bool Value::removeMember(std::string const& key, Value* removed)
    {
      return removeMember(key.data(), key.data() + key.length(), removed);
    }
    Value Value::removeMember(const char* key)
    {
      JSON_ASSERT_MESSAGE(type_ == nullValue || type_ == objectValue,
                          "in Json::Value::removeMember(): requires objectValue");
      if (type_ == nullValue)
        return nullRef;
    
      Value removed;  // null
      removeMember(key, key + strlen(key), &removed);
      return removed; // still null if removeMember() did nothing
    }
    Value Value::removeMember(const std::string& key)
    {
      return removeMember(key.c_str());
    }
    
    bool Value::removeIndex(ArrayIndex index, Value* removed) {
      if (type_ != arrayValue) {
        return false;
      }
      CZString key(index);
      ObjectValues::iterator it = value_.map_->find(key);
      if (it == value_.map_->end()) {
        return false;
      }
      *removed = it->second;
      ArrayIndex oldSize = size();
      // shift left all items left, into the place of the "removed"
      for (ArrayIndex i = index; i < (oldSize - 1); ++i){
        CZString keey(i);
        (*value_.map_)[keey] = (*this)[i + 1];
      }
      // erase the last one ("leftover")
      CZString keyLast(oldSize - 1);
      ObjectValues::iterator itLast = value_.map_->find(keyLast);
      value_.map_->erase(itLast);
      return true;
    }
    
    #ifdef JSON_USE_CPPTL
    Value Value::get(const CppTL::ConstString& key,
                     const Value& defaultValue) const {
      return get(key.c_str(), key.end_c_str(), defaultValue);
    }
    #endif
    
    bool Value::isMember(char const* key, char const* cend) const
    {
      Value const* value = find(key, cend);
      return NULL != value;
    }
    bool Value::isMember(char const* key) const
    {
      return isMember(key, key + strlen(key));
    }
    bool Value::isMember(std::string const& key) const
    {
      return isMember(key.data(), key.data() + key.length());
    }
    
    #ifdef JSON_USE_CPPTL
    bool Value::isMember(const CppTL::ConstString& key) const {
      return isMember(key.c_str(), key.end_c_str());
    }
    #endif
    
    Value::Members Value::getMemberNames() const {
      JSON_ASSERT_MESSAGE(
          type_ == nullValue || type_ == objectValue,
          "in Json::Value::getMemberNames(), value must be objectValue");
      if (type_ == nullValue)
        return Value::Members();
      Members members;
      members.reserve(value_.map_->size());
      ObjectValues::const_iterator it = value_.map_->begin();
      ObjectValues::const_iterator itEnd = value_.map_->end();
      for (; it != itEnd; ++it) {
        members.push_back(std::string((*it).first.data(),
                                      (*it).first.length()));
      }
      return members;
    }
    //
    //# ifdef JSON_USE_CPPTL
    // EnumMemberNames
    // Value::enumMemberNames() const
    //{
        
    //   if ( type_ == objectValue )
    //   {
        
    //      return CppTL::Enum::any(  CppTL::Enum::transform(
    //         CppTL::Enum::keys( *(value_.map_), CppTL::Type<const CZString &>() ),
    //         MemberNamesTransform() ) );
    //   }
    //   return EnumMemberNames();
    //}
    //
    //
    // EnumValues
    // Value::enumValues() const
    //{
        
    //   if ( type_ == objectValue  ||  type_ == arrayValue )
    //      return CppTL::Enum::anyValues( *(value_.map_),
    //                                     CppTL::Type<const Value &>() );
    //   return EnumValues();
    //}
    //
    //# endif
    
    static bool IsIntegral(double d) {
      double integral_part;
      return modf(d, &integral_part) == 0.0;
    }
    
    bool Value::isNull() const { return type_ == nullValue; }
    
    bool Value::isBool() const { return type_ == booleanValue; }
    
    bool Value::isInt() const {
      switch (type_) {
      case intValue:
        return value_.int_ >= minInt && value_.int_ <= maxInt;
      case uintValue:
        return value_.uint_ <= UInt(maxInt);
      case realValue:
        return value_.real_ >= minInt && value_.real_ <= maxInt &&
               IsIntegral(value_.real_);
      default:
        break;
      }
      return false;
    }
    
    bool Value::isUInt() const {
      switch (type_) {
      case intValue:
        return value_.int_ >= 0 && LargestUInt(value_.int_) <= LargestUInt(maxUInt);
      case uintValue:
        return value_.uint_ <= maxUInt;
      case realValue:
        return value_.real_ >= 0 && value_.real_ <= maxUInt &&
               IsIntegral(value_.real_);
      default:
        break;
      }
      return false;
    }
    
    bool Value::isInt64() const {
    #if defined(JSON_HAS_INT64)
      switch (type_) {
      case intValue:
        return true;
      case uintValue:
        return value_.uint_ <= UInt64(maxInt64);
      case realValue:
        // Note that maxInt64 (= 2^63 - 1) is not exactly representable as a
        // double, so double(maxInt64) will be rounded up to 2^63. Therefore we
        // require the value to be strictly less than the limit.
        return value_.real_ >= double(minInt64) &&
               value_.real_ < double(maxInt64) && IsIntegral(value_.real_);
      default:
        break;
      }
    #endif // JSON_HAS_INT64
      return false;
    }
    
    bool Value::isUInt64() const {
    #if defined(JSON_HAS_INT64)
      switch (type_) {
      case intValue:
        return value_.int_ >= 0;
      case uintValue:
        return true;
      case realValue:
        // Note that maxUInt64 (= 2^64 - 1) is not exactly representable as a
        // double, so double(maxUInt64) will be rounded up to 2^64. Therefore we
        // require the value to be strictly less than the limit.
        return value_.real_ >= 0 && value_.real_ < maxUInt64AsDouble &&
               IsIntegral(value_.real_);
      default:
        break;
      }
    #endif // JSON_HAS_INT64
      return false;
    }
    
    bool Value::isIntegral() const {
    #if defined(JSON_HAS_INT64)
      return isInt64() || isUInt64();
    #else
      return isInt() || isUInt();
    #endif
    }
    
    bool Value::isDouble() const { return type_ == realValue || isIntegral(); }
    
    bool Value::isNumeric() const { return isIntegral() || isDouble(); }
    
    bool Value::isString() const { return type_ == stringValue; }
    
    bool Value::isArray() const { return type_ == arrayValue; }
    
    bool Value::isObject() const { return type_ == objectValue; }
    
    void Value::setComment(const char* comment, size_t len, CommentPlacement placement) {
      if (!comments_)
        comments_ = new CommentInfo[numberOfCommentPlacement];
      if ((len > 0) && (comment[len-1] == '\n')) {
        // Always discard trailing newline, to aid indentation.
        len -= 1;
      }
      comments_[placement].setComment(comment, len);
    }
    
    void Value::setComment(const char* comment, CommentPlacement placement) {
      setComment(comment, strlen(comment), placement);
    }
    
    void Value::setComment(const std::string& comment, CommentPlacement placement) {
      setComment(comment.c_str(), comment.length(), placement);
    }
    
    bool Value::hasComment(CommentPlacement placement) const {
      return comments_ != 0 && comments_[placement].comment_ != 0;
    }
    
    std::string Value::getComment(CommentPlacement placement) const {
      if (hasComment(placement))
        return comments_[placement].comment_;
      return "";
    }
    
    std::string Value::toStyledString() const {
      StyledWriter writer;
      return writer.write(*this);
    }
    
    Value::const_iterator Value::begin() const {
      switch (type_) {
      case arrayValue:
      case objectValue:
        if (value_.map_)
          return const_iterator(value_.map_->begin());
        break;
      default:
        break;
      }
      return const_iterator();
    }
    
    Value::const_iterator Value::end() const {
      switch (type_) {
      case arrayValue:
      case objectValue:
        if (value_.map_)
          return const_iterator(value_.map_->end());
        break;
      default:
        break;
      }
      return const_iterator();
    }
    
    Value::iterator Value::begin() {
      switch (type_) {
      case arrayValue:
      case objectValue:
        if (value_.map_)
          return iterator(value_.map_->begin());
        break;
      default:
        break;
      }
      return iterator();
    }
    
    Value::iterator Value::end() {
      switch (type_) {
      case arrayValue:
      case objectValue:
        if (value_.map_)
          return iterator(value_.map_->end());
        break;
      default:
        break;
      }
      return iterator();
    }
    
    // class PathArgument
    // //
    
    PathArgument::PathArgument() : key_(), index_(), kind_(kindNone) {}
    
    PathArgument::PathArgument(ArrayIndex index)
        : key_(), index_(index), kind_(kindIndex) {}
    
    PathArgument::PathArgument(const char* key)
        : key_(key), index_(), kind_(kindKey) {}
    
    PathArgument::PathArgument(const std::string& key)
        : key_(key.c_str()), index_(), kind_(kindKey) {}
    
    // class Path
    // //
    
    Path::Path(const std::string& path,
               const PathArgument& a1,
               const PathArgument& a2,
               const PathArgument& a3,
               const PathArgument& a4,
               const PathArgument& a5) {
      InArgs in;
      in.push_back(&a1);
      in.push_back(&a2);
      in.push_back(&a3);
      in.push_back(&a4);
      in.push_back(&a5);
      makePath(path, in);
    }
    
    void Path::makePath(const std::string& path, const InArgs& in) {
      const char* current = path.c_str();
      const char* end = current + path.length();
      InArgs::const_iterator itInArg = in.begin();
      while (current != end) {
        if (*current == '[') {
          ++current;
          if (*current == '%')
            addPathInArg(path, in, itInArg, PathArgument::kindIndex);
          else {
            ArrayIndex index = 0;
            for (; current != end && *current >= '0' && *current <= '9'; ++current)
              index = index * 10 + ArrayIndex(*current - '0');
            args_.push_back(index);
          }
          if (current == end || *current++ != ']')
            invalidPath(path, int(current - path.c_str()));
        } else if (*current == '%') {
          addPathInArg(path, in, itInArg, PathArgument::kindKey);
          ++current;
        } else if (*current == '.') {
          ++current;
        } else {
          const char* beginName = current;
          while (current != end && !strchr("[.", *current))
            ++current;
          args_.push_back(std::string(beginName, current));
        }
      }
    }
    
    void Path::addPathInArg(const std::string& /*path*/,
                            const InArgs& in,
                            InArgs::const_iterator& itInArg,
                            PathArgument::Kind kind) {
      if (itInArg == in.end()) {
        // Error: missing argument %d
      } else if ((*itInArg)->kind_ != kind) {
        // Error: bad argument type
      } else {
        args_.push_back(**itInArg);
      }
    }
    
    void Path::invalidPath(const std::string& /*path*/, int /*location*/) {
      // Error: invalid path.
    }
    
    const Value& Path::resolve(const Value& root) const {
      const Value* node = &root;
      for (Args::const_iterator it = args_.begin(); it != args_.end(); ++it) {
        const PathArgument& arg = *it;
        if (arg.kind_ == PathArgument::kindIndex) {
          if (!node->isArray() || !node->isValidIndex(arg.index_)) {
            // Error: unable to resolve path (array value expected at position...
          }
          node = &((*node)[arg.index_]);
        } else if (arg.kind_ == PathArgument::kindKey) {
          if (!node->isObject()) {
            // Error: unable to resolve path (object value expected at position...)
          }
          node = &((*node)[arg.key_]);
          if (node == &Value::nullRef) {
            // Error: unable to resolve path (object has no member named '' at
            // position...)
          }
        }
      }
      return *node;
    }
    
    Value Path::resolve(const Value& root, const Value& defaultValue) const {
      const Value* node = &root;
      for (Args::const_iterator it = args_.begin(); it != args_.end(); ++it) {
        const PathArgument& arg = *it;
        if (arg.kind_ == PathArgument::kindIndex) {
          if (!node->isArray() || !node->isValidIndex(arg.index_))
            return defaultValue;
          node = &((*node)[arg.index_]);
        } else if (arg.kind_ == PathArgument::kindKey) {
          if (!node->isObject())
            return defaultValue;
          node = &((*node)[arg.key_]);
          if (node == &Value::nullRef)
            return defaultValue;
        }
      }
      return *node;
    }
    
    Value& Path::make(Value& root) const {
      Value* node = &root;
      for (Args::const_iterator it = args_.begin(); it != args_.end(); ++it) {
        const PathArgument& arg = *it;
        if (arg.kind_ == PathArgument::kindIndex) {
          if (!node->isArray()) {
            // Error: node is not an array at position ...
          }
          node = &((*node)[arg.index_]);
        } else if (arg.kind_ == PathArgument::kindKey) {
          if (!node->isObject()) {
            // Error: node is not an object at position...
          }
          node = &((*node)[arg.key_]);
        }
      }
      return *node;
    }
    
    } // namespace Json
    
    // //
    // End of content of file: src/lib_json/json_value.cpp
    // //
    
    
    
    
    
    
    // //
    // Beginning of content of file: src/lib_json/json_writer.cpp
    // //
    
    // Copyright 2011 Baptiste Lepilleur
    // Distributed under MIT license, or public domain if desired and
    // recognized in your jurisdiction.
    // See file LICENSE for detail or copy at http://jsoncpp.sourceforge.net/LICENSE
    
    #if !defined(JSON_IS_AMALGAMATION)
    #include <json/writer.h>
    #include "json_tool.h"
    #endif // if !defined(JSON_IS_AMALGAMATION)
    #include <iomanip>
    #include <memory>
    #include <sstream>
    #include <utility>
    #include <set>
    #include <cassert>
    #include <cstring>
    #include <cstdio>
    
    #if defined(_MSC_VER) && _MSC_VER >= 1200 && _MSC_VER < 1800 // Between VC++ 6.0 and VC++ 11.0
    #include <float.h>
    #define isfinite _finite
    #elif defined(__sun) && defined(__SVR4) //Solaris
    #include <ieeefp.h>
    #define isfinite finite
    #else
    #include <cmath>
    #define isfinite std::isfinite
    #endif
    
    #if defined(_MSC_VER) && _MSC_VER < 1500 // VC++ 8.0 and below
    #define snprintf _snprintf
    #elif defined(__ANDROID__)
    #define snprintf snprintf
    #elif __cplusplus >= 201103L
    #define snprintf std::snprintf
    #endif
    
    #if defined(__BORLANDC__)  
    #include <float.h>
    #define isfinite _finite
    #define snprintf _snprintf
    #endif
    
    #if defined(_MSC_VER) && _MSC_VER >= 1400 // VC++ 8.0
    // Disable warning about strdup being deprecated.
    #pragma warning(disable : 4996)
    #endif
    
    namespace Json {
    
    typedef std::auto_ptr<StreamWriter>   StreamWriterPtr;
    
    static bool containsControlCharacter(const char* str) {
      while (*str) {
        if (isControlCharacter(*(str++)))
          return true;
      }
      return false;
    }
    
    static bool containsControlCharacter0(const char* str, unsigned len) {
      char const* end = str + len;
      while (end != str) {
        if (isControlCharacter(*str) || 0==*str)
          return true;
        ++str;
      }
      return false;
    }
    
    std::string valueToString(LargestInt value) {
      UIntToStringBuffer buffer;
      char* current = buffer + sizeof(buffer);
      bool isNegative = value < 0;
      if (isNegative)
        value = -value;
      uintToString(LargestUInt(value), current);
      if (isNegative)
        *--current = '-';
      assert(current >= buffer);
      return current;
    }
    
    std::string valueToString(LargestUInt value) {
      UIntToStringBuffer buffer;
      char* current = buffer + sizeof(buffer);
      uintToString(value, current);
      assert(current >= buffer);
      return current;
    }
    
    #if defined(JSON_HAS_INT64)
    
    std::string valueToString(Int value) {
      return valueToString(LargestInt(value));
    }
    
    std::string valueToString(UInt value) {
      return valueToString(LargestUInt(value));
    }
    
    #endif // # if defined(JSON_HAS_INT64)
    
    std::string valueToString(double value) {
      // Allocate a buffer that is more than large enough to store the 16 digits of
      // precision requested below.
      char buffer[32];
      int len = -1;
    
    // Print into the buffer. We need not request the alternative representation
    // that always has a decimal point because JSON doesn't distingish the
    // concepts of reals and integers.
    #if defined(_MSC_VER) && defined(__STDC_SECURE_LIB__) // Use secure version with
                                                          // visual studio 2005 to
                                                          // avoid warning.
    #if defined(WINCE)
      len = _snprintf(buffer, sizeof(buffer), "%.17g", value);
    #else
      len = sprintf_s(buffer, sizeof(buffer), "%.17g", value);
    #endif
    #else
      if (isfinite(value)) {
        len = snprintf(buffer, sizeof(buffer), "%.17g", value);
      } else {
        // IEEE standard states that NaN values will not compare to themselves
        if (value != value) {
          len = snprintf(buffer, sizeof(buffer), "null");
        } else if (value < 0) {
          len = snprintf(buffer, sizeof(buffer), "-1e+9999");
        } else {
          len = snprintf(buffer, sizeof(buffer), "1e+9999");
        }
        // For those, we do not need to call fixNumLoc, but it is fast.
      }
    #endif
      assert(len >= 0);
      fixNumericLocale(buffer, buffer + len);
      return buffer;
    }
    
    std::string valueToString(bool value) { return value ? "true" : "false"; }
    
    std::string valueToQuotedString(const char* value) {
      if (value == NULL)
        return "";
      // Not sure how to handle unicode...
      if (strpbrk(value, "\"\\\b\f\n\r\t") == NULL &&
          !containsControlCharacter(value))
        return std::string("\"") + value + "\"";
      // We have to walk value and escape any special characters.
      // Appending to std::string is not efficient, but this should be rare.
      // (Note: forward slashes are *not* rare, but I am not escaping them.)
      std::string::size_type maxsize =
          strlen(value) * 2 + 3; // allescaped+quotes+NULL
      std::string result;
      result.reserve(maxsize); // to avoid lots of mallocs
      result += "\"";
      for (const char* c = value; *c != 0; ++c) {
        switch (*c) {
        case '\"':
          result += "\\\"";
          break;
        case '\\':
          result += "\\\\";
          break;
        case '\b':
          result += "\\b";
          break;
        case '\f':
          result += "\\f";
          break;
        case '\n':
          result += "\\n";
          break;
        case '\r':
          result += "\\r";
          break;
        case '\t':
          result += "\\t";
          break;
        // case '/':
        // Even though \/ is considered a legal escape in JSON, a bare
        // slash is also legal, so I see no reason to escape it.
        // (I hope I am not misunderstanding something.
        // blep notes: actually escaping \/ may be useful in javascript to avoid </
        // sequence.
        // Should add a flag to allow this compatibility mode and prevent this
        // sequence from occurring.
        default:
          if (isControlCharacter(*c)) {
            std::ostringstream oss;
            oss << "\\u" << std::hex << std::uppercase << std::setfill('0')
                << std::setw(4) << static_cast<int>(*c);
            result += oss.str();
          } else {
            result += *c;
          }
          break;
        }
      }
      result += "\"";
      return result;
    }
    
    // https://github.com/upcaste/upcaste/blob/master/src/upcore/src/cstring/strnpbrk.cpp
    static char const* strnpbrk(char const* s, char const* accept, size_t n) {
      assert((s || !n) && accept);
    
      char const* const end = s + n;
      for (char const* cur = s; cur < end; ++cur) {
        int const c = *cur;
        for (char const* a = accept; *a; ++a) {
          if (*a == c) {
            return cur;
          }
        }
      }
      return NULL;
    }
    static std::string valueToQuotedStringN(const char* value, unsigned length) {
      if (value == NULL)
        return "";
      // Not sure how to handle unicode...
      if (strnpbrk(value, "\"\\\b\f\n\r\t", length) == NULL &&
          !containsControlCharacter0(value, length))
        return std::string("\"") + value + "\"";
      // We have to walk value and escape any special characters.
      // Appending to std::string is not efficient, but this should be rare.
      // (Note: forward slashes are *not* rare, but I am not escaping them.)
      std::string::size_type maxsize =
          length * 2 + 3; // allescaped+quotes+NULL
      std::string result;
      result.reserve(maxsize); // to avoid lots of mallocs
      result += "\"";
      char const* end = value + length;
      for (const char* c = value; c != end; ++c) {
        switch (*c) {
        case '\"':
          result += "\\\"";
          break;
        case '\\':
          result += "\\\\";
          break;
        case '\b':
          result += "\\b";
          break;
        case '\f':
          result += "\\f";
          break;
        case '\n':
          result += "\\n";
          break;
        case '\r':
          result += "\\r";
          break;
        case '\t':
          result += "\\t";
          break;
        // case '/':
        // Even though \/ is considered a legal escape in JSON, a bare
        // slash is also legal, so I see no reason to escape it.
        // (I hope I am not misunderstanding something.)
        // blep notes: actually escaping \/ may be useful in javascript to avoid </
        // sequence.
        // Should add a flag to allow this compatibility mode and prevent this
        // sequence from occurring.
        default:
          if ((isControlCharacter(*c)) || (*c == 0)) {
            std::ostringstream oss;
            oss << "\\u" << std::hex << std::uppercase << std::setfill('0')
                << std::setw(4) << static_cast<int>(*c);
            result += oss.str();
          } else {
            result += *c;
          }
          break;
        }
      }
      result += "\"";
      return result;
    }
    
    // Class Writer
    // //
    Writer::~Writer() {}
    
    // Class FastWriter
    // //
    
    FastWriter::FastWriter()
        : yamlCompatiblityEnabled_(false) {}
    
    void FastWriter::enableYAMLCompatibility() { yamlCompatiblityEnabled_ = true; }
    
    std::string FastWriter::write(const Value& root) {
      document_ = "";
      writeValue(root);
      document_ += "\n";
      return document_;
    }
    
    void FastWriter::writeValue(const Value& value) {
      switch (value.type()) {
      case nullValue:
        document_ += "null";
        break;
      case intValue:
        document_ += valueToString(value.asLargestInt());
        break;
      case uintValue:
        document_ += valueToString(value.asLargestUInt());
        break;
      case realValue:
        document_ += valueToString(value.asDouble());
        break;
      case stringValue:
      {
        // Is NULL possible for value.string_?
        char const* str;
        char const* end;
        bool ok = value.getString(&str, &end);
        if (ok) document_ += valueToQuotedStringN(str, static_cast<unsigned>(end-str));
        break;
      }
      case booleanValue:
        document_ += valueToString(value.asBool());
        break;
      case arrayValue: {
        document_ += '[';
        int size = value.size();
        for (int index = 0; index < size; ++index) {
          if (index > 0)
            document_ += ',';
          writeValue(value[index]);
        }
        document_ += ']';
      } break;
      case objectValue: {
        Value::Members members(value.getMemberNames());
        document_ += '{';
        for (Value::Members::iterator it = members.begin(); it != members.end();
             ++it) {
          const std::string& name = *it;
          if (it != members.begin())
            document_ += ',';
          document_ += valueToQuotedStringN(name.data(), static_cast<unsigned>(name.length()));
          document_ += yamlCompatiblityEnabled_ ? ": " : ":";
          writeValue(value[name]);
        }
        document_ += '}';
      } break;
      }
    }
    
    // Class StyledWriter
    // //
    
    StyledWriter::StyledWriter()
        : rightMargin_(74), indentSize_(3), addChildValues_() {}
    
    std::string StyledWriter::write(const Value& root) {
      document_ = "";
      addChildValues_ = false;
      indentString_ = "";
      writeCommentBeforeValue(root);
      writeValue(root);
      writeCommentAfterValueOnSameLine(root);
      document_ += "\n";
      return document_;
    }
    
    void StyledWriter::writeValue(const Value& value) {
      switch (value.type()) {
      case nullValue:
        pushValue("null");
        break;
      case intValue:
        pushValue(valueToString(value.asLargestInt()));
        break;
      case uintValue:
        pushValue(valueToString(value.asLargestUInt()));
        break;
      case realValue:
        pushValue(valueToString(value.asDouble()));
        break;
      case stringValue:
      {
        // Is NULL possible for value.string_?
        char const* str;
        char const* end;
        bool ok = value.getString(&str, &end);
        if (ok) pushValue(valueToQuotedStringN(str, static_cast<unsigned>(end-str)));
        else pushValue("");
        break;
      }
      case booleanValue:
        pushValue(valueToString(value.asBool()));
        break;
      case arrayValue:
        writeArrayValue(value);
        break;
      case objectValue: {
        Value::Members members(value.getMemberNames());
        if (members.empty())
          pushValue("{}");
        else {
          writeWithIndent("{");
          indent();
          Value::Members::iterator it = members.begin();
          for (;;) {
            const std::string& name = *it;
            const Value& childValue = value[name];
            writeCommentBeforeValue(childValue);
            writeWithIndent(valueToQuotedString(name.c_str()));
            document_ += " : ";
            writeValue(childValue);
            if (++it == members.end()) {
              writeCommentAfterValueOnSameLine(childValue);
              break;
            }
            document_ += ',';
            writeCommentAfterValueOnSameLine(childValue);
          }
          unindent();
          writeWithIndent("}");
        }
      } break;
      }
    }
    
    void StyledWriter::writeArrayValue(const Value& value) {
      unsigned size = value.size();
      if (size == 0)
        pushValue("[]");
      else {
        bool isArrayMultiLine = isMultineArray(value);
        if (isArrayMultiLine) {
          writeWithIndent("[");
          indent();
          bool hasChildValue = !childValues_.empty();
          unsigned index = 0;
          for (;;) {
            const Value& childValue = value[index];
            writeCommentBeforeValue(childValue);
            if (hasChildValue)
              writeWithIndent(childValues_[index]);
            else {
              writeIndent();
              writeValue(childValue);
            }
            if (++index == size) {
              writeCommentAfterValueOnSameLine(childValue);
              break;
            }
            document_ += ',';
            writeCommentAfterValueOnSameLine(childValue);
          }
          unindent();
          writeWithIndent("]");
        } else // output on a single line
        {
          assert(childValues_.size() == size);
          document_ += "[ ";
          for (unsigned index = 0; index < size; ++index) {
            if (index > 0)
              document_ += ", ";
            document_ += childValues_[index];
          }
          document_ += " ]";
        }
      }
    }
    
    bool StyledWriter::isMultineArray(const Value& value) {
      int size = value.size();
      bool isMultiLine = size * 3 >= rightMargin_;
      childValues_.clear();
      for (int index = 0; index < size && !isMultiLine; ++index) {
        const Value& childValue = value[index];
        isMultiLine =
            isMultiLine || ((childValue.isArray() || childValue.isObject()) &&
                            childValue.size() > 0);
      }
      if (!isMultiLine) // check if line length > max line length
      {
        childValues_.reserve(size);
        addChildValues_ = true;
        int lineLength = 4 + (size - 1) * 2; // '[ ' + ', '*n + ' ]'
        for (int index = 0; index < size; ++index) {
          if (hasCommentForValue(value[index])) {
            isMultiLine = true;
          }
          writeValue(value[index]);
          lineLength += int(childValues_[index].length());
        }
        addChildValues_ = false;
        isMultiLine = isMultiLine || lineLength >= rightMargin_;
      }
      return isMultiLine;
    }
    
    void StyledWriter::pushValue(const std::string& value) {
      if (addChildValues_)
        childValues_.push_back(value);
      else
        document_ += value;
    }
    
    void StyledWriter::writeIndent() {
      if (!document_.empty()) {
        char last = document_[document_.length() - 1];
        if (last == ' ') // already indented
          return;
        if (last != '\n') // Comments may add new-line
          document_ += '\n';
      }
      document_ += indentString_;
    }
    
    void StyledWriter::writeWithIndent(const std::string& value) {
      writeIndent();
      document_ += value;
    }
    
    void StyledWriter::indent() { indentString_ += std::string(indentSize_, ' '); }
    
    void StyledWriter::unindent() {
      assert(int(indentString_.size()) >= indentSize_);
      indentString_.resize(indentString_.size() - indentSize_);
    }
    
    void StyledWriter::writeCommentBeforeValue(const Value& root) {
      if (!root.hasComment(commentBefore))
        return;
    
      document_ += "\n";
      writeIndent();
      const std::string& comment = root.getComment(commentBefore);
      std::string::const_iterator iter = comment.begin();
      while (iter != comment.end()) {
        document_ += *iter;
        if (*iter == '\n' &&
           (iter != comment.end() && *(iter + 1) == '/'))
          writeIndent();
        ++iter;
      }
    
      // Comments are stripped of trailing newlines, so add one here
      document_ += "\n";
    }
    
    void StyledWriter::writeCommentAfterValueOnSameLine(const Value& root) {
      if (root.hasComment(commentAfterOnSameLine))
        document_ += " " + root.getComment(commentAfterOnSameLine);
    
      if (root.hasComment(commentAfter)) {
        document_ += "\n";
        document_ += root.getComment(commentAfter);
        document_ += "\n";
      }
    }
    
    bool StyledWriter::hasCommentForValue(const Value& value) {
      return value.hasComment(commentBefore) ||
             value.hasComment(commentAfterOnSameLine) ||
             value.hasComment(commentAfter);
    }
    
    // Class StyledStreamWriter
    // //
    
    StyledStreamWriter::StyledStreamWriter(std::string indentation)
        : document_(NULL), rightMargin_(74), indentation_(indentation),
          addChildValues_() {}
    
    void StyledStreamWriter::write(std::ostream& out, const Value& root) {
      document_ = &out;
      addChildValues_ = false;
      indentString_ = "";
      indented_ = true;
      writeCommentBeforeValue(root);
      if (!indented_) writeIndent();
      indented_ = true;
      writeValue(root);
      writeCommentAfterValueOnSameLine(root);
      *document_ << "\n";
      document_ = NULL; // Forget the stream, for safety.
    }
    
    void StyledStreamWriter::writeValue(const Value& value) {
      switch (value.type()) {
      case nullValue:
        pushValue("null");
        break;
      case intValue:
        pushValue(valueToString(value.asLargestInt()));
        break;
      case uintValue:
        pushValue(valueToString(value.asLargestUInt()));
        break;
      case realValue:
        pushValue(valueToString(value.asDouble()));
        break;
      case stringValue:
      {
        // Is NULL possible for value.string_?
        char const* str;
        char const* end;
        bool ok = value.getString(&str, &end);
        if (ok) pushValue(valueToQuotedStringN(str, static_cast<unsigned>(end-str)));
        else pushValue("");
        break;
      }
      case booleanValue:
        pushValue(valueToString(value.asBool()));
        break;
      case arrayValue:
        writeArrayValue(value);
        break;
      case objectValue: {
        Value::Members members(value.getMemberNames());
        if (members.empty())
          pushValue("{}");
        else {
          writeWithIndent("{");
          indent();
          Value::Members::iterator it = members.begin();
          for (;;) {
            const std::string& name = *it;
            const Value& childValue = value[name];
            writeCommentBeforeValue(childValue);
            writeWithIndent(valueToQuotedString(name.c_str()));
            *document_ << " : ";
            writeValue(childValue);
            if (++it == members.end()) {
              writeCommentAfterValueOnSameLine(childValue);
              break;
            }
            *document_ << ",";
            writeCommentAfterValueOnSameLine(childValue);
          }
          unindent();
          writeWithIndent("}");
        }
      } break;
      }
    }
    
    void StyledStreamWriter::writeArrayValue(const Value& value) {
      unsigned size = value.size();
      if (size == 0)
        pushValue("[]");
      else {
        bool isArrayMultiLine = isMultineArray(value);
        if (isArrayMultiLine) {
          writeWithIndent("[");
          indent();
          bool hasChildValue = !childValues_.empty();
          unsigned index = 0;
          for (;;) {
            const Value& childValue = value[index];
            writeCommentBeforeValue(childValue);
            if (hasChildValue)
              writeWithIndent(childValues_[index]);
            else {
              if (!indented_) writeIndent();
              indented_ = true;
              writeValue(childValue);
              indented_ = false;
            }
            if (++index == size) {
              writeCommentAfterValueOnSameLine(childValue);
              break;
            }
            *document_ << ",";
            writeCommentAfterValueOnSameLine(childValue);
          }
          unindent();
          writeWithIndent("]");
        } else // output on a single line
        {
          assert(childValues_.size() == size);
          *document_ << "[ ";
          for (unsigned index = 0; index < size; ++index) {
            if (index > 0)
              *document_ << ", ";
            *document_ << childValues_[index];
          }
          *document_ << " ]";
        }
      }
    }
    
    bool StyledStreamWriter::isMultineArray(const Value& value) {
      int size = value.size();
      bool isMultiLine = size * 3 >= rightMargin_;
      childValues_.clear();
      for (int index = 0; index < size && !isMultiLine; ++index) {
        const Value& childValue = value[index];
        isMultiLine =
            isMultiLine || ((childValue.isArray() || childValue.isObject()) &&
                            childValue.size() > 0);
      }
      if (!isMultiLine) // check if line length > max line length
      {
        childValues_.reserve(size);
        addChildValues_ = true;
        int lineLength = 4 + (size - 1) * 2; // '[ ' + ', '*n + ' ]'
        for (int index = 0; index < size; ++index) {
          if (hasCommentForValue(value[index])) {
            isMultiLine = true;
          }
          writeValue(value[index]);
          lineLength += int(childValues_[index].length());
        }
        addChildValues_ = false;
        isMultiLine = isMultiLine || lineLength >= rightMargin_;
      }
      return isMultiLine;
    }
    
    void StyledStreamWriter::pushValue(const std::string& value) {
      if (addChildValues_)
        childValues_.push_back(value);
      else
        *document_ << value;
    }
    
    void StyledStreamWriter::writeIndent() {
      // blep intended this to look at the so-far-written string
      // to determine whether we are already indented, but
      // with a stream we cannot do that. So we rely on some saved state.
      // The caller checks indented_.
      *document_ << '\n' << indentString_;
    }
    
    void StyledStreamWriter::writeWithIndent(const std::string& value) {
      if (!indented_) writeIndent();
      *document_ << value;
      indented_ = false;
    }
    
    void StyledStreamWriter::indent() { indentString_ += indentation_; }
    
    void StyledStreamWriter::unindent() {
      assert(indentString_.size() >= indentation_.size());
      indentString_.resize(indentString_.size() - indentation_.size());
    }
    
    void StyledStreamWriter::writeCommentBeforeValue(const Value& root) {
      if (!root.hasComment(commentBefore))
        return;
    
      if (!indented_) writeIndent();
      const std::string& comment = root.getComment(commentBefore);
      std::string::const_iterator iter = comment.begin();
      while (iter != comment.end()) {
        *document_ << *iter;
        if (*iter == '\n' &&
           (iter != comment.end() && *(iter + 1) == '/'))
          // writeIndent();  // would include newline
          *document_ << indentString_;
        ++iter;
      }
      indented_ = false;
    }
    
    void StyledStreamWriter::writeCommentAfterValueOnSameLine(const Value& root) {
      if (root.hasComment(commentAfterOnSameLine))
        *document_ << ' ' << root.getComment(commentAfterOnSameLine);
    
      if (root.hasComment(commentAfter)) {
        writeIndent();
        *document_ << root.getComment(commentAfter);
      }
      indented_ = false;
    }
    
    bool StyledStreamWriter::hasCommentForValue(const Value& value) {
      return value.hasComment(commentBefore) ||
             value.hasComment(commentAfterOnSameLine) ||
             value.hasComment(commentAfter);
    }
    
    //
    // BuiltStyledStreamWriter
    
    /// Scoped enums are not available until C++11.
    struct CommentStyle {
      /// Decide whether to write comments.
      enum Enum {
        None,  ///< Drop all comments.
        Most,  ///< Recover odd behavior of previous versions (not implemented yet).
        All  ///< Keep all comments.
      };
    };
    
    struct BuiltStyledStreamWriter : public StreamWriter
    {
      BuiltStyledStreamWriter(
          std::string const& indentation,
          CommentStyle::Enum cs,
          std::string const& colonSymbol,
          std::string const& nullSymbol,
          std::string const& endingLineFeedSymbol);
      virtual int write(Value const& root, std::ostream* sout);
    private:
      void writeValue(Value const& value);
      void writeArrayValue(Value const& value);
      bool isMultineArray(Value const& value);
      void pushValue(std::string const& value);
      void writeIndent();
      void writeWithIndent(std::string const& value);
      void indent();
      void unindent();
      void writeCommentBeforeValue(Value const& root);
      void writeCommentAfterValueOnSameLine(Value const& root);
      static bool hasCommentForValue(const Value& value);
    
      typedef std::vector<std::string> ChildValues;
    
      ChildValues childValues_;
      std::string indentString_;
      int rightMargin_;
      std::string indentation_;
      CommentStyle::Enum cs_;
      std::string colonSymbol_;
      std::string nullSymbol_;
      std::string endingLineFeedSymbol_;
      bool addChildValues_ : 1;
      bool indented_ : 1;
    };
    BuiltStyledStreamWriter::BuiltStyledStreamWriter(
          std::string const& indentation,
          CommentStyle::Enum cs,
          std::string const& colonSymbol,
          std::string const& nullSymbol,
          std::string const& endingLineFeedSymbol)
      : rightMargin_(74)
      , indentation_(indentation)
      , cs_(cs)
      , colonSymbol_(colonSymbol)
      , nullSymbol_(nullSymbol)
      , endingLineFeedSymbol_(endingLineFeedSymbol)
      , addChildValues_(false)
      , indented_(false)
    {
    }
    int BuiltStyledStreamWriter::write(Value const& root, std::ostream* sout)
    {
      sout_ = sout;
      addChildValues_ = false;
      indented_ = true;
      indentString_ = "";
      writeCommentBeforeValue(root);
      if (!indented_) writeIndent();
      indented_ = true;
      writeValue(root);
      writeCommentAfterValueOnSameLine(root);
      *sout_ << endingLineFeedSymbol_;
      sout_ = NULL;
      return 0;
    }
    void BuiltStyledStreamWriter::writeValue(Value const& value) {
      switch (value.type()) {
      case nullValue:
        pushValue(nullSymbol_);
        break;
      case intValue:
        pushValue(valueToString(value.asLargestInt()));
        break;
      case uintValue:
        pushValue(valueToString(value.asLargestUInt()));
        break;
      case realValue:
        pushValue(valueToString(value.asDouble()));
        break;
      case stringValue:
      {
        // Is NULL is possible for value.string_?
        char const* str;
        char const* end;
        bool ok = value.getString(&str, &end);
        if (ok) pushValue(valueToQuotedStringN(str, static_cast<unsigned>(end-str)));
        else pushValue("");
        break;
      }
      case booleanValue:
        pushValue(valueToString(value.asBool()));
        break;
      case arrayValue:
        writeArrayValue(value);
        break;
      case objectValue: {
        Value::Members members(value.getMemberNames());
        if (members.empty())
          pushValue("{}");
        else {
          writeWithIndent("{");
          indent();
          Value::Members::iterator it = members.begin();
          for (;;) {
            std::string const& name = *it;
            Value const& childValue = value[name];
            writeCommentBeforeValue(childValue);
            writeWithIndent(valueToQuotedStringN(name.data(), static_cast<unsigned>(name.length())));
            *sout_ << colonSymbol_;
            writeValue(childValue);
            if (++it == members.end()) {
              writeCommentAfterValueOnSameLine(childValue);
              break;
            }
            *sout_ << ",";
            writeCommentAfterValueOnSameLine(childValue);
          }
          unindent();
          writeWithIndent("}");
        }
      } break;
      }
    }
    
    void BuiltStyledStreamWriter::writeArrayValue(Value const& value) {
      unsigned size = value.size();
      if (size == 0)
        pushValue("[]");
      else {
        bool isMultiLine = (cs_ == CommentStyle::All) || isMultineArray(value);
        if (isMultiLine) {
          writeWithIndent("[");
          indent();
          bool hasChildValue = !childValues_.empty();
          unsigned index = 0;
          for (;;) {
            Value const& childValue = value[index];
            writeCommentBeforeValue(childValue);
            if (hasChildValue)
              writeWithIndent(childValues_[index]);
            else {
              if (!indented_) writeIndent();
              indented_ = true;
              writeValue(childValue);
              indented_ = false;
            }
            if (++index == size) {
              writeCommentAfterValueOnSameLine(childValue);
              break;
            }
            *sout_ << ",";
            writeCommentAfterValueOnSameLine(childValue);
          }
          unindent();
          writeWithIndent("]");
        } else // output on a single line
        {
          assert(childValues_.size() == size);
          *sout_ << "[";
          if (!indentation_.empty()) *sout_ << " ";
          for (unsigned index = 0; index < size; ++index) {
            if (index > 0)
              *sout_ << ", ";
            *sout_ << childValues_[index];
          }
          if (!indentation_.empty()) *sout_ << " ";
          *sout_ << "]";
        }
      }
    }
    
    bool BuiltStyledStreamWriter::isMultineArray(Value const& value) {
      int size = value.size();
      bool isMultiLine = size * 3 >= rightMargin_;
      childValues_.clear();
      for (int index = 0; index < size && !isMultiLine; ++index) {
        Value const& childValue = value[index];
        isMultiLine =
            isMultiLine || ((childValue.isArray() || childValue.isObject()) &&
                            childValue.size() > 0);
      }
      if (!isMultiLine) // check if line length > max line length
      {
        childValues_.reserve(size);
        addChildValues_ = true;
        int lineLength = 4 + (size - 1) * 2; // '[ ' + ', '*n + ' ]'
        for (int index = 0; index < size; ++index) {
          if (hasCommentForValue(value[index])) {
            isMultiLine = true;
          }
          writeValue(value[index]);
          lineLength += int(childValues_[index].length());
        }
        addChildValues_ = false;
        isMultiLine = isMultiLine || lineLength >= rightMargin_;
      }
      return isMultiLine;
    }
    
    void BuiltStyledStreamWriter::pushValue(std::string const& value) {
      if (addChildValues_)
        childValues_.push_back(value);
      else
        *sout_ << value;
    }
    
    void BuiltStyledStreamWriter::writeIndent() {
      // blep intended this to look at the so-far-written string
      // to determine whether we are already indented, but
      // with a stream we cannot do that. So we rely on some saved state.
      // The caller checks indented_.
    
      if (!indentation_.empty()) {
        // In this case, drop newlines too.
        *sout_ << '\n' << indentString_;
      }
    }
    
    void BuiltStyledStreamWriter::writeWithIndent(std::string const& value) {
      if (!indented_) writeIndent();
      *sout_ << value;
      indented_ = false;
    }
    
    void BuiltStyledStreamWriter::indent() { indentString_ += indentation_; }
    
    void BuiltStyledStreamWriter::unindent() {
      assert(indentString_.size() >= indentation_.size());
      indentString_.resize(indentString_.size() - indentation_.size());
    }
    
    void BuiltStyledStreamWriter::writeCommentBeforeValue(Value const& root) {
      if (cs_ == CommentStyle::None) return;
      if (!root.hasComment(commentBefore))
        return;
    
      if (!indented_) writeIndent();
      const std::string& comment = root.getComment(commentBefore);
      std::string::const_iterator iter = comment.begin();
      while (iter != comment.end()) {
        *sout_ << *iter;
        if (*iter == '\n' &&
           (iter != comment.end() && *(iter + 1) == '/'))
          // writeIndent();  // would write extra newline
          *sout_ << indentString_;
        ++iter;
      }
      indented_ = false;
    }
    
    void BuiltStyledStreamWriter::writeCommentAfterValueOnSameLine(Value const& root) {
      if (cs_ == CommentStyle::None) return;
      if (root.hasComment(commentAfterOnSameLine))
        *sout_ << " " + root.getComment(commentAfterOnSameLine);
    
      if (root.hasComment(commentAfter)) {
        writeIndent();
        *sout_ << root.getComment(commentAfter);
      }
    }
    
    // static
    bool BuiltStyledStreamWriter::hasCommentForValue(const Value& value) {
      return value.hasComment(commentBefore) ||
             value.hasComment(commentAfterOnSameLine) ||
             value.hasComment(commentAfter);
    }
    
    ///
    // StreamWriter
    
    StreamWriter::StreamWriter()
        : sout_(NULL)
    {
    }
    StreamWriter::~StreamWriter()
    {
    }
    StreamWriter::Factory::~Factory()
    {}
    StreamWriterBuilder::StreamWriterBuilder()
    {
      setDefaults(&settings_);
    }
    StreamWriterBuilder::~StreamWriterBuilder()
    {}
    StreamWriter* StreamWriterBuilder::newStreamWriter() const
    {
      std::string indentation = settings_["indentation"].asString();
      std::string cs_str = settings_["commentStyle"].asString();
      bool eyc = settings_["enableYAMLCompatibility"].asBool();
      bool dnp = settings_["dropNullPlaceholders"].asBool();
      CommentStyle::Enum cs = CommentStyle::All;
      if (cs_str == "All") {
        cs = CommentStyle::All;
      } else if (cs_str == "None") {
        cs = CommentStyle::None;
      } else {
        throwRuntimeError("commentStyle must be 'All' or 'None'");
      }
      std::string colonSymbol = " : ";
      if (eyc) {
        colonSymbol = ": ";
      } else if (indentation.empty()) {
        colonSymbol = ":";
      }
      std::string nullSymbol = "null";
      if (dnp) {
        nullSymbol = "";
      }
      std::string endingLineFeedSymbol = "";
      return new BuiltStyledStreamWriter(
          indentation, cs,
          colonSymbol, nullSymbol, endingLineFeedSymbol);
    }
    static void getValidWriterKeys(std::set<std::string>* valid_keys)
    {
      valid_keys->clear();
      valid_keys->insert("indentation");
      valid_keys->insert("commentStyle");
      valid_keys->insert("enableYAMLCompatibility");
      valid_keys->insert("dropNullPlaceholders");
    }
    bool StreamWriterBuilder::validate(Json::Value* invalid) const
    {
      Json::Value my_invalid;
      if (!invalid) invalid = &my_invalid;  // so we do not need to test for NULL
      Json::Value& inv = *invalid;
      std::set<std::string> valid_keys;
      getValidWriterKeys(&valid_keys);
      Value::Members keys = settings_.getMemberNames();
      size_t n = keys.size();
      for (size_t i = 0; i < n; ++i) {
        std::string const& key = keys[i];
        if (valid_keys.find(key) == valid_keys.end()) {
          inv[key] = settings_[key];
        }
      }
      return 0u == inv.size();
    }
    Value& StreamWriterBuilder::operator[](std::string key)
    {
      return settings_[key];
    }
    // static
    void StreamWriterBuilder::setDefaults(Json::Value* settings)
    {
      //! [StreamWriterBuilderDefaults]
      (*settings)["commentStyle"] = "All";
      (*settings)["indentation"] = "\t";
      (*settings)["enableYAMLCompatibility"] = false;
      (*settings)["dropNullPlaceholders"] = false;
      //! [StreamWriterBuilderDefaults]
    }
    
    std::string writeString(StreamWriter::Factory const& builder, Value const& root) {
      std::ostringstream sout;
      StreamWriterPtr const writer(builder.newStreamWriter());
      writer->write(root, &sout);
      return sout.str();
    }
    
    std::ostream& operator<<(std::ostream& sout, Value const& root) {
      StreamWriterBuilder builder;
      StreamWriterPtr const writer(builder.newStreamWriter());
      writer->write(root, &sout);
      return sout;
    }
    
    } // namespace Json
    
    // //
    // End of content of file: src/lib_json/json_writer.cpp
    // //