jsoncpp.cpp

/// Json-cpp amalgated source (http://jsoncpp.sourceforge.net/).
/// It is intented 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/json.h"


// //////////////////////////////////////////////////////////////////////
// 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] = 0x80 | static_cast<char>((0x3f & (cp >> 6)));
    result[0] = 0xE0 | static_cast<char>((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 [0,32[).
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 = char(value % 10) + '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>

#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

namespace Json {

// Implementation of class Features
// ////////////////////////////////

Features::Features()
    : allowComments_(true), strictRoot_(false),
      allowDroppedNullPlaceholders_(false), allowNumericKeys_(false) {}

Features Features::all() { return Features(); }

Features Features::strictMode() {
  Features features;
  features.allowComments_ = false;
  features.strictRoot_ = true;
  features.allowDroppedNullPlaceholders_ = false;
  features.allowNumericKeys_ = false;
  return features;
}

// Implementation of class Reader
// ////////////////////////////////

static inline bool in(Reader::Char c,
                      Reader::Char c1,
                      Reader::Char c2,
                      Reader::Char c3,
                      Reader::Char c4) {
  return c == c1 || c == c2 || c == c3 || c == c4;
}

static inline bool in(Reader::Char c,
                      Reader::Char c1,
                      Reader::Char c2,
                      Reader::Char c3,
                      Reader::Char c4,
                      Reader::Char c5) {
  return c == c1 || c == c2 || c == c3 || c == c4 || c == c5;
}

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);

  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() {
  Token token;
  skipCommentTokens(token);
  bool successful = true;

  if (collectComments_ && !commentsBefore_.empty()) {
    // Remove newline characters at the end of the comments
    size_t lastNonNewline = commentsBefore_.find_last_not_of("\r\n");
    if (lastNonNewline != std::string::npos) {
      commentsBefore_.erase(lastNonNewline + 1);
    } else {
      commentsBefore_.clear();
    }

    currentValue().setComment(commentsBefore_, commentBefore);
    commentsBefore_ = "";
  }

  switch (token.type_) {
  case tokenObjectBegin:
    successful = readObject(token);
    currentValue().setOffsetLimit(current_ - begin_);
    break;
  case tokenArrayBegin:
    successful = readArray(token);
    currentValue().setOffsetLimit(current_ - begin_);
    break;
  case tokenNumber:
    successful = decodeNumber(token);
    break;
  case tokenString:
    successful = decodeString(token);
    break;
  case tokenTrue:
    currentValue() = true;
    currentValue().setOffsetStart(token.start_ - begin_);
    currentValue().setOffsetLimit(token.end_ - begin_);
    break;
  case tokenFalse:
    currentValue() = false;
    currentValue().setOffsetStart(token.start_ - begin_);
    currentValue().setOffsetLimit(token.end_ - begin_);
    break;
  case tokenNull:
    currentValue() = Value();
    currentValue().setOffsetStart(token.start_ - begin_);
    currentValue().setOffsetLimit(token.end_ - begin_);
    break;
  case tokenArraySeparator:
    if (features_.allowDroppedNullPlaceholders_) {
      // "Un-read" the current token and mark the current value as a null
      // token.
      current_--;
      currentValue() = Value();
      currentValue().setOffsetStart(current_ - begin_ - 1);
      currentValue().setOffsetLimit(current_ - begin_);
      break;
    }
  // Else, fall through...
  default:
    currentValue().setOffsetStart(token.start_ - begin_);
    currentValue().setOffsetLimit(token.end_ - begin_);
    return addError("Syntax error: value, object or array expected.", token);
  }

  if (collectComments_) {
    lastValueEnd_ = current_;
    lastValue_ = &currentValue();
  }

  return successful;
}

void Reader::skipCommentTokens(Token& token) {
  if (features_.allowComments_) {
    do {
      readToken(token);
    } while (token.type_ == tokenComment);
  } else {
    readToken(token);
  }
}

bool Reader::expectToken(TokenType type, Token& token, const char* message) {
  readToken(token);
  if (token.type_ != type)
    return addError(message, token);
  return true;
}

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;
}

void
Reader::addComment(Location begin, Location end, CommentPlacement placement) {
  assert(collectComments_);
  if (placement == commentAfterOnSameLine) {
    assert(lastValue_ != 0);
    lastValue_->setComment(std::string(begin, end), placement);
  } else {
    commentsBefore_ += std::string(begin, end);
  }
}

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 == '\r' || c == '\n')
      break;
  }
  return true;
}

void Reader::readNumber() {
  while (current_ != end_) {
    if (!(*current_ >= '0' && *current_ <= '9') &&
        !in(*current_, '.', 'e', 'E', '+', '-'))
      break;
    ++current_;
  }
}

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;
  currentValue() = Value(objectValue);
  currentValue().setOffsetStart(tokenStart.start_ - begin_);
  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);
    }
    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) {
  currentValue() = Value(arrayValue);
  currentValue().setOffsetStart(tokenStart.start_ - begin_);
  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() = decoded;
  currentValue().setOffsetStart(token.start_ - begin_);
  currentValue().setOffsetLimit(token.end_ - begin_);
  return true;
}

bool Reader::decodeNumber(Token& token, Value& decoded) {
  bool isDouble = false;
  for (Location inspect = token.start_; inspect != token.end_; ++inspect) {
    isDouble = isDouble || in(*inspect, '.', 'e', 'E', '+') ||
               (*inspect == '-' && inspect != token.start_);
  }
  if (isDouble)
    return decodeDouble(token, 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;
  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 addError("'" + std::string(token.start_, token.end_) +
                          "' is not a number.",
                      token);
    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() = decoded;
  currentValue().setOffsetStart(token.start_ - begin_);
  currentValue().setOffsetLimit(token.end_ - begin_);
  return true;
}

bool Reader::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 Reader::decodeString(Token& token) {
  std::string decoded;
  if (!decodeString(token, decoded))
    return false;
  currentValue() = decoded;
  currentValue().setOffsetStart(token.start_ - begin_);
  currentValue().setOffsetLimit(token.end_ - begin_);
  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;
}

std::vector<Reader::StructuredError> Reader::getStructuredErrors() const {
  std::vector<Reader::StructuredError> allErrors;
  for (Errors::const_iterator itError = errors_.begin();
       itError != errors_.end();
       ++itError) {
    const ErrorInfo& error = *itError;
    Reader::StructuredError structured;
    structured.offset_start = error.token_.start_ - begin_;
    structured.offset_limit = error.token_.end_ - begin_;
    structured.message = error.message_;
    allErrors.push_back(structured);
  }
  return allErrors;
}

bool Reader::pushError(const Value& value, const std::string& message) {
  size_t length = end_ - begin_;
  if(value.getOffsetStart() > length
    || value.getOffsetLimit() > length)
    return false;
  Token token;
  token.type_ = tokenError;
  token.start_ = begin_ + value.getOffsetStart();
  token.end_ = end_ + value.getOffsetLimit();
  ErrorInfo info;
  info.token_ = token;
  info.message_ = message;
  info.extra_ = 0;
  errors_.push_back(info);
  return true;
}

bool Reader::pushError(const Value& value, const std::string& message, const Value& extra) {
  size_t length = end_ - begin_;
  if(value.getOffsetStart() > length
    || value.getOffsetLimit() > length
    || extra.getOffsetLimit() > length)
    return false;
  Token token;
  token.type_ = tokenError;
  token.start_ = begin_ + value.getOffsetStart();
  token.end_ = begin_ + value.getOffsetLimit();
  ErrorInfo info;
  info.token_ = token;
  info.message_ = message;
  info.extra_ = begin_ + extra.getOffsetStart();
  errors_.push_back(info);
  return true;
}

bool Reader::good() const {
  return !errors_.size();
}

std::istream& operator>>(std::istream& sin, Value& root) {
  Json::Reader reader;
  bool ok = reader.parse(sin, root, true);
  if (!ok) {
    fprintf(stderr,
            "Error from reader: %s",
            reader.getFormattedErrorMessages().c_str());

    JSON_FAIL_MESSAGE("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_batchallocator.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 JSONCPP_BATCHALLOCATOR_H_INCLUDED
#define JSONCPP_BATCHALLOCATOR_H_INCLUDED

#include <stdlib.h>
#include <assert.h>

#ifndef JSONCPP_DOC_EXCLUDE_IMPLEMENTATION

namespace Json {

/* Fast memory allocator.
 *
 * This memory allocator allocates memory for a batch of object (specified by
 * the page size, the number of object in each page).
 *
 * It does not allow the destruction of a single object. All the allocated
 * objects can be destroyed at once. The memory can be either released or reused
 * for future allocation.
 *
 * The in-place new operator must be used to construct the object using the
 * pointer returned by allocate.
 */
template <typename AllocatedType, const unsigned int objectPerAllocation>
class BatchAllocator {
public:
  BatchAllocator(unsigned int objectsPerPage = 255)
      : freeHead_(0), objectsPerPage_(objectsPerPage) {
    //      printf( "Size: %d => %s\n", sizeof(AllocatedType),
    // typeid(AllocatedType).name() );
    assert(sizeof(AllocatedType) * objectPerAllocation >=
           sizeof(AllocatedType*)); // We must be able to store a slist in the
                                    // object free space.
    assert(objectsPerPage >= 16);
    batches_ = allocateBatch(0); // allocated a dummy page
    currentBatch_ = batches_;
  }

  ~BatchAllocator() {
    for (BatchInfo* batch = batches_; batch;) {
      BatchInfo* nextBatch = batch->next_;
      free(batch);
      batch = nextBatch;
    }
  }

  /// allocate space for an array of objectPerAllocation object.
  /// @warning it is the responsability of the caller to call objects
  /// constructors.
  AllocatedType* allocate() {
    if (freeHead_) // returns node from free list.
    {
      AllocatedType* object = freeHead_;
      freeHead_ = *(AllocatedType**)object;
      return object;
    }
    if (currentBatch_->used_ == currentBatch_->end_) {
      currentBatch_ = currentBatch_->next_;
      while (currentBatch_ && currentBatch_->used_ == currentBatch_->end_)
        currentBatch_ = currentBatch_->next_;

      if (!currentBatch_) // no free batch found, allocate a new one
      {
        currentBatch_ = allocateBatch(objectsPerPage_);
        currentBatch_->next_ = batches_; // insert at the head of the list
        batches_ = currentBatch_;
      }
    }
    AllocatedType* allocated = currentBatch_->used_;
    currentBatch_->used_ += objectPerAllocation;
    return allocated;
  }

  /// Release the object.
  /// @warning it is the responsability of the caller to actually destruct the
  /// object.
  void release(AllocatedType* object) {
    assert(object != 0);
    *(AllocatedType**)object = freeHead_;
    freeHead_ = object;
  }

private:
  struct BatchInfo {
    BatchInfo* next_;
    AllocatedType* used_;
    AllocatedType* end_;
    AllocatedType buffer_[objectPerAllocation];
  };

  // disabled copy constructor and assignement operator.
  BatchAllocator(const BatchAllocator&);
  void operator=(const BatchAllocator&);

  static BatchInfo* allocateBatch(unsigned int objectsPerPage) {
    const unsigned int mallocSize =
        sizeof(BatchInfo) - sizeof(AllocatedType) * objectPerAllocation +
        sizeof(AllocatedType) * objectPerAllocation * objectsPerPage;
    BatchInfo* batch = static_cast<BatchInfo*>(malloc(mallocSize));
    batch->next_ = 0;
    batch->used_ = batch->buffer_;
    batch->end_ = batch->buffer_ + objectsPerPage;
    return batch;
  }

  BatchInfo* batches_;
  BatchInfo* currentBatch_;
  /// Head of a single linked list within the allocated space of freeed object
  AllocatedType* freeHead_;
  unsigned int objectsPerPage_;
};

} // namespace Json

#endif // ifndef JSONCPP_DOC_INCLUDE_IMPLEMENTATION

#endif // JSONCPP_BATCHALLOCATOR_H_INCLUDED

// //////////////////////////////////////////////////////////////////////
// End of content of file: src/lib_json/json_batchallocator.h
// //////////////////////////////////////////////////////////////////////






// //////////////////////////////////////////////////////////////////////
// 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()
#ifndef JSON_VALUE_USE_INTERNAL_MAP
    : current_(), isNull_(true) {
}
#else
    : isArray_(true), isNull_(true) {
  iterator_.array_ = ValueInternalArray::IteratorState();
}
#endif

#ifndef JSON_VALUE_USE_INTERNAL_MAP
ValueIteratorBase::ValueIteratorBase(
    const Value::ObjectValues::iterator& current)
    : current_(current), isNull_(false) {}
#else
ValueIteratorBase::ValueIteratorBase(
    const ValueInternalArray::IteratorState& state)
    : isArray_(true) {
  iterator_.array_ = state;
}

ValueIteratorBase::ValueIteratorBase(
    const ValueInternalMap::IteratorState& state)
    : isArray_(false) {
  iterator_.map_ = state;
}
#endif

Value& ValueIteratorBase::deref() const {
#ifndef JSON_VALUE_USE_INTERNAL_MAP
  return current_->second;
#else
  if (isArray_)
    return ValueInternalArray::dereference(iterator_.array_);
  return ValueInternalMap::value(iterator_.map_);
#endif
}

void ValueIteratorBase::increment() {
#ifndef JSON_VALUE_USE_INTERNAL_MAP
  ++current_;
#else
  if (isArray_)
    ValueInternalArray::increment(iterator_.array_);
  ValueInternalMap::increment(iterator_.map_);
#endif
}

void ValueIteratorBase::decrement() {
#ifndef JSON_VALUE_USE_INTERNAL_MAP
  --current_;
#else
  if (isArray_)
    ValueInternalArray::decrement(iterator_.array_);
  ValueInternalMap::decrement(iterator_.map_);
#endif
}

ValueIteratorBase::difference_type
ValueIteratorBase::computeDistance(const SelfType& other) const {
#ifndef JSON_VALUE_USE_INTERNAL_MAP
#ifdef JSON_USE_CPPTL_SMALLMAP
  return current_ - other.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
#else
  if (isArray_)
    return ValueInternalArray::distance(iterator_.array_,
                                        other.iterator_.array_);
  return ValueInternalMap::distance(iterator_.map_, other.iterator_.map_);
#endif
}

bool ValueIteratorBase::isEqual(const SelfType& other) const {
#ifndef JSON_VALUE_USE_INTERNAL_MAP
  if (isNull_) {
    return other.isNull_;
  }
  return current_ == other.current_;
#else
  if (isArray_)
    return ValueInternalArray::equals(iterator_.array_, other.iterator_.array_);
  return ValueInternalMap::equals(iterator_.map_, other.iterator_.map_);
#endif
}

void ValueIteratorBase::copy(const SelfType& other) {
#ifndef JSON_VALUE_USE_INTERNAL_MAP
  current_ = other.current_;
  isNull_ = other.isNull_;
#else
  if (isArray_)
    iterator_.array_ = other.iterator_.array_;
  iterator_.map_ = other.iterator_.map_;
#endif
}

Value ValueIteratorBase::key() const {
#ifndef JSON_VALUE_USE_INTERNAL_MAP
  const Value::CZString czstring = (*current_).first;
  if (czstring.c_str()) {
    if (czstring.isStaticString())
      return Value(StaticString(czstring.c_str()));
    return Value(czstring.c_str());
  }
  return Value(czstring.index());
#else
  if (isArray_)
    return Value(ValueInternalArray::indexOf(iterator_.array_));
  bool isStatic;
  const char* memberName = ValueInternalMap::key(iterator_.map_, isStatic);
  if (isStatic)
    return Value(StaticString(memberName));
  return Value(memberName);
#endif
}

UInt ValueIteratorBase::index() const {
#ifndef JSON_VALUE_USE_INTERNAL_MAP
  const Value::CZString czstring = (*current_).first;
  if (!czstring.c_str())
    return czstring.index();
  return Value::UInt(-1);
#else
  if (isArray_)
    return Value::UInt(ValueInternalArray::indexOf(iterator_.array_));
  return Value::UInt(-1);
#endif
}

const char* ValueIteratorBase::memberName() const {
#ifndef JSON_VALUE_USE_INTERNAL_MAP
  const char* name = (*current_).first.c_str();
  return name ? name : "";
#else
  if (!isArray_)
    return ValueInternalMap::key(iterator_.map_);
  return "";
#endif
}

// //////////////////////////////////////////////////////////////////
// //////////////////////////////////////////////////////////////////
// //////////////////////////////////////////////////////////////////
// class ValueConstIterator
// //////////////////////////////////////////////////////////////////
// //////////////////////////////////////////////////////////////////
// //////////////////////////////////////////////////////////////////

ValueConstIterator::ValueConstIterator() {}

#ifndef JSON_VALUE_USE_INTERNAL_MAP
ValueConstIterator::ValueConstIterator(
    const Value::ObjectValues::iterator& current)
    : ValueIteratorBase(current) {}
#else
ValueConstIterator::ValueConstIterator(
    const ValueInternalArray::IteratorState& state)
    : ValueIteratorBase(state) {}

ValueConstIterator::ValueConstIterator(
    const ValueInternalMap::IteratorState& state)
    : ValueIteratorBase(state) {}
#endif

ValueConstIterator& ValueConstIterator::
operator=(const ValueIteratorBase& other) {
  copy(other);
  return *this;
}

// //////////////////////////////////////////////////////////////////
// //////////////////////////////////////////////////////////////////
// //////////////////////////////////////////////////////////////////
// class ValueIterator
// //////////////////////////////////////////////////////////////////
// //////////////////////////////////////////////////////////////////
// //////////////////////////////////////////////////////////////////

ValueIterator::ValueIterator() {}

#ifndef JSON_VALUE_USE_INTERNAL_MAP
ValueIterator::ValueIterator(const Value::ObjectValues::iterator& current)
    : ValueIteratorBase(current) {}
#else
ValueIterator::ValueIterator(const ValueInternalArray::IteratorState& state)
    : ValueIteratorBase(state) {}

ValueIterator::ValueIterator(const ValueInternalMap::IteratorState& state)
    : ValueIteratorBase(state) {}
#endif

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>
#ifndef JSON_USE_SIMPLE_INTERNAL_ALLOCATOR
#include "json_batchallocator.h"
#endif // #ifndef JSON_USE_SIMPLE_INTERNAL_ALLOCATOR
#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

#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
#define ALIGNAS(byte_alignment)
#endif
static const unsigned char ALIGNAS(8) kNull[sizeof(Value)] = { 0 };
const unsigned char& kNullRef = kNull[0];
const Value& Value::null = 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);

/// Unknown size marker
static const unsigned int unknown = (unsigned)-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,
                                         unsigned int length = unknown) {
  if (length == unknown)
    length = (unsigned int)strlen(value);

  // Avoid an integer overflow in the call to malloc below by limiting length
  // to a sane value.
  if (length >= (unsigned)Value::maxInt)
    length = Value::maxInt - 1;

  char* newString = static_cast<char*>(malloc(length + 1));
  JSON_ASSERT_MESSAGE(newString != 0,
                      "in Json::Value::duplicateStringValue(): "
                      "Failed to allocate string value buffer");
  memcpy(newString, value, length);
  newString[length] = 0;
  return newString;
}

/** Free the string duplicated by duplicateStringValue().
 */
static inline void releaseStringValue(char* value) { free(value); }

} // namespace Json

// //////////////////////////////////////////////////////////////////
// //////////////////////////////////////////////////////////////////
// //////////////////////////////////////////////////////////////////
// ValueInternals...
// //////////////////////////////////////////////////////////////////
// //////////////////////////////////////////////////////////////////
// //////////////////////////////////////////////////////////////////
#if !defined(JSON_IS_AMALGAMATION)
#ifdef JSON_VALUE_USE_INTERNAL_MAP
#include "json_internalarray.inl"
#include "json_internalmap.inl"
#endif // JSON_VALUE_USE_INTERNAL_MAP

#include "json_valueiterator.inl"
#endif // if !defined(JSON_IS_AMALGAMATION)

namespace Json {

// //////////////////////////////////////////////////////////////////
// //////////////////////////////////////////////////////////////////
// //////////////////////////////////////////////////////////////////
// class Value::CommentInfo
// //////////////////////////////////////////////////////////////////
// //////////////////////////////////////////////////////////////////
// //////////////////////////////////////////////////////////////////

Value::CommentInfo::CommentInfo() : comment_(0) {}

Value::CommentInfo::~CommentInfo() {
  if (comment_)
    releaseStringValue(comment_);
}

void Value::CommentInfo::setComment(const char* text) {
  if (comment_)
    releaseStringValue(comment_);
  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);
}

// //////////////////////////////////////////////////////////////////
// //////////////////////////////////////////////////////////////////
// //////////////////////////////////////////////////////////////////
// class Value::CZString
// //////////////////////////////////////////////////////////////////
// //////////////////////////////////////////////////////////////////
// //////////////////////////////////////////////////////////////////
#ifndef JSON_VALUE_USE_INTERNAL_MAP

// Notes: index_ indicates if the string was allocated when
// a string is stored.

Value::CZString::CZString(ArrayIndex index) : cstr_(0), index_(index) {}

Value::CZString::CZString(const char* cstr, DuplicationPolicy allocate)
    : cstr_(allocate == duplicate ? duplicateStringValue(cstr) : cstr),
      index_(allocate) {}

Value::CZString::CZString(const CZString& other)
    : cstr_(other.index_ != noDuplication && other.cstr_ != 0
                ? duplicateStringValue(other.cstr_)
                : other.cstr_),
      index_(other.cstr_
                 ? static_cast<ArrayIndex>(other.index_ == noDuplication
                     ? noDuplication : duplicate)
                 : other.index_) {}

Value::CZString::~CZString() {
  if (cstr_ && index_ == 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 strcmp(cstr_, other.cstr_) < 0;
  return index_ < other.index_;
}

bool Value::CZString::operator==(const CZString& other) const {
  if (cstr_)
    return strcmp(cstr_, other.cstr_) == 0;
  return index_ == other.index_;
}

ArrayIndex Value::CZString::index() const { return index_; }

const char* Value::CZString::c_str() const { return cstr_; }

bool Value::CZString::isStaticString() const { return index_ == noDuplication; }

#endif // ifndef JSON_VALUE_USE_INTERNAL_MAP

// //////////////////////////////////////////////////////////////////
// //////////////////////////////////////////////////////////////////
// //////////////////////////////////////////////////////////////////
// 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 type) {
  initBasic(type);
  switch (type) {
  case nullValue:
    break;
  case intValue:
  case uintValue:
    value_.int_ = 0;
    break;
  case realValue:
    value_.real_ = 0.0;
    break;
  case stringValue:
    value_.string_ = 0;
    break;
#ifndef JSON_VALUE_USE_INTERNAL_MAP
  case arrayValue:
  case objectValue:
    value_.map_ = new ObjectValues();
    break;
#else
  case arrayValue:
    value_.array_ = arrayAllocator()->newArray();
    break;
  case objectValue:
    value_.map_ = mapAllocator()->newMap();
    break;
#endif
  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_ = duplicateStringValue(value);
}

Value::Value(const char* beginValue, const char* endValue) {
  initBasic(stringValue, true);
  value_.string_ =
      duplicateStringValue(beginValue, (unsigned int)(endValue - beginValue));
}

Value::Value(const std::string& value) {
  initBasic(stringValue, true);
  value_.string_ =
      duplicateStringValue(value.c_str(), (unsigned int)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_ = duplicateStringValue(value, value.length());
}
#endif

Value::Value(bool value) {
  initBasic(booleanValue);
  value_.bool_ = value;
}

Value::Value(const Value& other)
    : type_(other.type_), allocated_(false)
#ifdef JSON_VALUE_USE_INTERNAL_MAP
      ,
      itemIsUsed_(0)
#endif
      ,
      comments_(0), start_(other.start_), limit_(other.limit_) {
  switch (type_) {
  case nullValue:
  case intValue:
  case uintValue:
  case realValue:
  case booleanValue:
    value_ = other.value_;
    break;
  case stringValue:
    if (other.value_.string_) {
      value_.string_ = duplicateStringValue(other.value_.string_);
      allocated_ = true;
    } else {
      value_.string_ = 0;
      allocated_ = false;
    }
    break;
#ifndef JSON_VALUE_USE_INTERNAL_MAP
  case arrayValue:
  case objectValue:
    value_.map_ = new ObjectValues(*other.value_.map_);
    break;
#else
  case arrayValue:
    value_.array_ = arrayAllocator()->newArrayCopy(*other.value_.array_);
    break;
  case objectValue:
    value_.map_ = mapAllocator()->newMapCopy(*other.value_.map_);
    break;
#endif
  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_);
    }
  }
}

Value::~Value() {
  switch (type_) {
  case nullValue:
  case intValue:
  case uintValue:
  case realValue:
  case booleanValue:
    break;
  case stringValue:
    if (allocated_)
      releaseStringValue(value_.string_);
    break;
#ifndef JSON_VALUE_USE_INTERNAL_MAP
  case arrayValue:
  case objectValue:
    delete value_.map_;
    break;
#else
  case arrayValue:
    arrayAllocator()->destructArray(value_.array_);
    break;
  case objectValue:
    mapAllocator()->destructMap(value_.map_);
    break;
#endif
  default:
    JSON_ASSERT_UNREACHABLE;
  }

  if (comments_)
    delete[] comments_;
}

Value& Value::operator=(Value other) {
  swap(other);
  return *this;
}

void Value::swap(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;
  std::swap(start_, other.start_);
  std::swap(limit_, other.limit_);
}

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:
    return (value_.string_ == 0 && other.value_.string_) ||
           (other.value_.string_ && value_.string_ &&
            strcmp(value_.string_, other.value_.string_) < 0);
#ifndef JSON_VALUE_USE_INTERNAL_MAP
  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_);
  }
#else
  case arrayValue:
    return value_.array_->compare(*(other.value_.array_)) < 0;
  case objectValue:
    return value_.map_->compare(*(other.value_.map_)) < 0;
#endif
  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:
    return (value_.string_ == other.value_.string_) ||
           (other.value_.string_ && value_.string_ &&
            strcmp(value_.string_, other.value_.string_) == 0);
#ifndef JSON_VALUE_USE_INTERNAL_MAP
  case arrayValue:
  case objectValue:
    return value_.map_->size() == other.value_.map_->size() &&
           (*value_.map_) == (*other.value_.map_);
#else
  case arrayValue:
    return value_.array_->compare(*(other.value_.array_)) == 0;
  case objectValue:
    return value_.map_->compare(*(other.value_.map_)) == 0;
#endif
  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");
  return value_.string_;
}

std::string Value::asString() const {
  switch (type_) {
  case nullValue:
    return "";
  case stringValue:
    return value_.string_ ? value_.string_ : "";
  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 {
  return CppTL::ConstString(asString().c_str());
}
#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:
    return value_.real_ ? 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;
#ifndef JSON_VALUE_USE_INTERNAL_MAP
  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());
#else
  case arrayValue:
    return Int(value_.array_->size());
  case objectValue:
    return Int(value_.map_->size());
#endif
  }
  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");
  start_ = 0;
  limit_ = 0;
  switch (type_) {
#ifndef JSON_VALUE_USE_INTERNAL_MAP
  case arrayValue:
  case objectValue:
    value_.map_->clear();
    break;
#else
  case arrayValue:
    value_.array_->clear();
    break;
  case objectValue:
    value_.map_->clear();
    break;
#endif
  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);
#ifndef JSON_VALUE_USE_INTERNAL_MAP
  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);
  }
#else
  value_.array_->resize(newSize);
#endif
}

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);
#ifndef JSON_VALUE_USE_INTERNAL_MAP
  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, null);
  it = value_.map_->insert(it, defaultValue);
  return (*it).second;
#else
  return value_.array_->resolveReference(index);
#endif
}

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 null;
#ifndef JSON_VALUE_USE_INTERNAL_MAP
  CZString key(index);
  ObjectValues::const_iterator it = value_.map_->find(key);
  if (it == value_.map_->end())
    return null;
  return (*it).second;
#else
  Value* value = value_.array_->find(index);
  return value ? *value : null;
#endif
}

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)];
}

Value& Value::operator[](const char* key) {
  return resolveReference(key, false);
}

void Value::initBasic(ValueType type, bool allocated) {
  type_ = type;
  allocated_ = allocated;
#ifdef JSON_VALUE_USE_INTERNAL_MAP
  itemIsUsed_ = 0;
#endif
  comments_ = 0;
  start_ = 0;
  limit_ = 0;
}

Value& Value::resolveReference(const char* key, bool isStatic) {
  JSON_ASSERT_MESSAGE(
      type_ == nullValue || type_ == objectValue,
      "in Json::Value::resolveReference(): requires objectValue");
  if (type_ == nullValue)
    *this = Value(objectValue);
#ifndef JSON_VALUE_USE_INTERNAL_MAP
  CZString actualKey(
      key, isStatic ? CZString::noDuplication : 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, null);
  it = value_.map_->insert(it, defaultValue);
  Value& value = (*it).second;
  return value;
#else
  return value_.map_->resolveReference(key, isStatic);
#endif
}

Value Value::get(ArrayIndex index, const Value& defaultValue) const {
  const Value* value = &((*this)[index]);
  return value == &null ? defaultValue : *value;
}

bool Value::isValidIndex(ArrayIndex index) const { return index < size(); }

const Value& Value::operator[](const char* key) const {
  JSON_ASSERT_MESSAGE(
      type_ == nullValue || type_ == objectValue,
      "in Json::Value::operator[](char const*)const: requires objectValue");
  if (type_ == nullValue)
    return null;
#ifndef JSON_VALUE_USE_INTERNAL_MAP
  CZString actualKey(key, CZString::noDuplication);
  ObjectValues::const_iterator it = value_.map_->find(actualKey);
  if (it == value_.map_->end())
    return null;
  return (*it).second;
#else
  const Value* value = value_.map_->find(key);
  return value ? *value : null;
#endif
}

Value& Value::operator[](const std::string& key) {
  return (*this)[key.c_str()];
}

const Value& Value::operator[](const std::string& key) const {
  return (*this)[key.c_str()];
}

Value& Value::operator[](const StaticString& key) {
  return resolveReference(key, true);
}

#ifdef JSON_USE_CPPTL
Value& Value::operator[](const CppTL::ConstString& key) {
  return (*this)[key.c_str()];
}

const Value& Value::operator[](const CppTL::ConstString& key) const {
  return (*this)[key.c_str()];
}
#endif

Value& Value::append(const Value& value) { return (*this)[size()] = value; }

Value Value::get(const char* key, const Value& defaultValue) const {
  const Value* value = &((*this)[key]);
  return value == &null ? defaultValue : *value;
}

Value Value::get(const std::string& key, const Value& defaultValue) const {
  return get(key.c_str(), defaultValue);
}

Value Value::removeMember(const char* key) {
  JSON_ASSERT_MESSAGE(type_ == nullValue || type_ == objectValue,
                      "in Json::Value::removeMember(): requires objectValue");
  if (type_ == nullValue)
    return null;
#ifndef JSON_VALUE_USE_INTERNAL_MAP
  CZString actualKey(key, CZString::noDuplication);
  ObjectValues::iterator it = value_.map_->find(actualKey);
  if (it == value_.map_->end())
    return null;
  Value old(it->second);
  value_.map_->erase(it);
  return old;
#else
  Value* value = value_.map_->find(key);
  if (value) {
    Value old(*value);
    value_.map_.remove(key);
    return old;
  } else {
    return null;
  }
#endif
}

Value Value::removeMember(const std::string& key) {
  return removeMember(key.c_str());
}

#ifdef JSON_USE_CPPTL
Value Value::get(const CppTL::ConstString& key,
                 const Value& defaultValue) const {
  return get(key.c_str(), defaultValue);
}
#endif

bool Value::isMember(const char* key) const {
  const Value* value = &((*this)[key]);
  return value != &null;
}

bool Value::isMember(const std::string& key) const {
  return isMember(key.c_str());
}

#ifdef JSON_USE_CPPTL
bool Value::isMember(const CppTL::ConstString& key) const {
  return isMember(key.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());
#ifndef JSON_VALUE_USE_INTERNAL_MAP
  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.c_str()));
#else
  ValueInternalMap::IteratorState it;
  ValueInternalMap::IteratorState itEnd;
  value_.map_->makeBeginIterator(it);
  value_.map_->makeEndIterator(itEnd);
  for (; !ValueInternalMap::equals(it, itEnd); ValueInternalMap::increment(it))
    members.push_back(std::string(ValueInternalMap::key(it)));
#endif
  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, CommentPlacement placement) {
  if (!comments_)
    comments_ = new CommentInfo[numberOfCommentPlacement];
  comments_[placement].setComment(comment);
}

void Value::setComment(const std::string& comment, CommentPlacement placement) {
  setComment(comment.c_str(), 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 "";
}

void Value::setOffsetStart(size_t start) { start_ = start; }

void Value::setOffsetLimit(size_t limit) { limit_ = limit; }

size_t Value::getOffsetStart() const { return start_; }

size_t Value::getOffsetLimit() const { return limit_; }

std::string Value::toStyledString() const {
  StyledWriter writer;
  return writer.write(*this);
}

Value::const_iterator Value::begin() const {
  switch (type_) {
#ifdef JSON_VALUE_USE_INTERNAL_MAP
  case arrayValue:
    if (value_.array_) {
      ValueInternalArray::IteratorState it;
      value_.array_->makeBeginIterator(it);
      return const_iterator(it);
    }
    break;
  case objectValue:
    if (value_.map_) {
      ValueInternalMap::IteratorState it;
      value_.map_->makeBeginIterator(it);
      return const_iterator(it);
    }
    break;
#else
  case arrayValue:
  case objectValue:
    if (value_.map_)
      return const_iterator(value_.map_->begin());
    break;
#endif
  default:
    break;
  }
  return const_iterator();
}

Value::const_iterator Value::end() const {
  switch (type_) {
#ifdef JSON_VALUE_USE_INTERNAL_MAP
  case arrayValue:
    if (value_.array_) {
      ValueInternalArray::IteratorState it;
      value_.array_->makeEndIterator(it);
      return const_iterator(it);
    }
    break;
  case objectValue:
    if (value_.map_) {
      ValueInternalMap::IteratorState it;
      value_.map_->makeEndIterator(it);
      return const_iterator(it);
    }
    break;
#else
  case arrayValue:
  case objectValue:
    if (value_.map_)
      return const_iterator(value_.map_->end());
    break;
#endif
  default:
    break;
  }
  return const_iterator();
}

Value::iterator Value::begin() {
  switch (type_) {
#ifdef JSON_VALUE_USE_INTERNAL_MAP
  case arrayValue:
    if (value_.array_) {
      ValueInternalArray::IteratorState it;
      value_.array_->makeBeginIterator(it);
      return iterator(it);
    }
    break;
  case objectValue:
    if (value_.map_) {
      ValueInternalMap::IteratorState it;
      value_.map_->makeBeginIterator(it);
      return iterator(it);
    }
    break;
#else
  case arrayValue:
  case objectValue:
    if (value_.map_)
      return iterator(value_.map_->begin());
    break;
#endif
  default:
    break;
  }
  return iterator();
}

Value::iterator Value::end() {
  switch (type_) {
#ifdef JSON_VALUE_USE_INTERNAL_MAP
  case arrayValue:
    if (value_.array_) {
      ValueInternalArray::IteratorState it;
      value_.array_->makeEndIterator(it);
      return iterator(it);
    }
    break;
  case objectValue:
    if (value_.map_) {
      ValueInternalMap::IteratorState it;
      value_.map_->makeEndIterator(it);
      return iterator(it);
    }
    break;
#else
  case arrayValue:
  case objectValue:
    if (value_.map_)
      return iterator(value_.map_->end());
    break;
#endif
  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::null) {
        // 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::null)
        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 <utility>
#include <assert.h>
#include <stdio.h>
#include <string.h>
#include <sstream>
#include <iomanip>
#include <math.h>

#if defined(_MSC_VER) && _MSC_VER < 1500 // VC++ 8.0 and below
#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 {

static bool containsControlCharacter(const char* str) {
  while (*str) {
    if (isControlCharacter(*(str++)))
      return true;
  }
  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), "%.16g", value);
#else
  len = sprintf_s(buffer, sizeof(buffer), "%.16g", value);
#endif
#else
  if (isfinite(value)) {
    len = snprintf(buffer, sizeof(buffer), "%.16g", 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;
}

// Class Writer
// //////////////////////////////////////////////////////////////////
Writer::~Writer() {}

// Class FastWriter
// //////////////////////////////////////////////////////////////////

FastWriter::FastWriter()
    : yamlCompatiblityEnabled_(false), dropNullPlaceholders_(false),
      omitEndingLineFeed_(false) {}

void FastWriter::enableYAMLCompatibility() { yamlCompatiblityEnabled_ = true; }

void FastWriter::dropNullPlaceholders() { dropNullPlaceholders_ = true; }

void FastWriter::omitEndingLineFeed() { omitEndingLineFeed_ = true; }

std::string FastWriter::write(const Value& root) {
  document_ = "";
  writeValue(root);
  if (!omitEndingLineFeed_)
    document_ += "\n";
  return document_;
}

void FastWriter::writeValue(const Value& value) {
  switch (value.type()) {
  case nullValue:
    if (!dropNullPlaceholders_)
      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:
    document_ += valueToQuotedString(value.asCString());
    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_ += valueToQuotedString(name.c_str());
      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:
    pushValue(valueToQuotedString(value.asCString()));
    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) {
      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();
  std::string normalizedComment = normalizeEOL(root.getComment(commentBefore));
  std::string::const_iterator iter = normalizedComment.begin();
  while (iter != normalizedComment.end()) {
    document_ += *iter;
    if (*iter == '\n' && *(iter + 1) == '/')
      writeIndent();
    ++iter;
  }

  // Comments are stripped of newlines, so add one here
  document_ += "\n";
}

void StyledWriter::writeCommentAfterValueOnSameLine(const Value& root) {
  if (root.hasComment(commentAfterOnSameLine))
    document_ += " " + normalizeEOL(root.getComment(commentAfterOnSameLine));

  if (root.hasComment(commentAfter)) {
    document_ += "\n";
    document_ += normalizeEOL(root.getComment(commentAfter));
    document_ += "\n";
  }
}

bool StyledWriter::hasCommentForValue(const Value& value) {
  return value.hasComment(commentBefore) ||
         value.hasComment(commentAfterOnSameLine) ||
         value.hasComment(commentAfter);
}

std::string StyledWriter::normalizeEOL(const std::string& text) {
  std::string normalized;
  normalized.reserve(text.length());
  const char* begin = text.c_str();
  const char* end = begin + text.length();
  const char* current = begin;
  while (current != end) {
    char c = *current++;
    if (c == '\r') // mac or dos EOL
    {
      if (*current == '\n') // convert dos EOL
        ++current;
      normalized += '\n';
    } else // handle unix EOL & other char
      normalized += c;
  }
  return normalized;
}

// 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_ = "";
  writeCommentBeforeValue(root);
  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:
    pushValue(valueToQuotedString(value.asCString()));
    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 {
          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 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) {
      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() {
  /*
    Some comments in this method would have been nice. ;-)

   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_ << '\n' << indentString_;
}

void StyledStreamWriter::writeWithIndent(const std::string& value) {
  writeIndent();
  *document_ << value;
}

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;
  *document_ << normalizeEOL(root.getComment(commentBefore));
  *document_ << "\n";
}

void StyledStreamWriter::writeCommentAfterValueOnSameLine(const Value& root) {
  if (root.hasComment(commentAfterOnSameLine))
    *document_ << " " + normalizeEOL(root.getComment(commentAfterOnSameLine));

  if (root.hasComment(commentAfter)) {
    *document_ << "\n";
    *document_ << normalizeEOL(root.getComment(commentAfter));
    *document_ << "\n";
  }
}

bool StyledStreamWriter::hasCommentForValue(const Value& value) {
  return value.hasComment(commentBefore) ||
         value.hasComment(commentAfterOnSameLine) ||
         value.hasComment(commentAfter);
}

std::string StyledStreamWriter::normalizeEOL(const std::string& text) {
  std::string normalized;
  normalized.reserve(text.length());
  const char* begin = text.c_str();
  const char* end = begin + text.length();
  const char* current = begin;
  while (current != end) {
    char c = *current++;
    if (c == '\r') // mac or dos EOL
    {
      if (*current == '\n') // convert dos EOL
        ++current;
      normalized += '\n';
    } else // handle unix EOL & other char
      normalized += c;
  }
  return normalized;
}

std::ostream& operator<<(std::ostream& sout, const Value& root) {
  Json::StyledStreamWriter writer;
  writer.write(sout, root);
  return sout;
}

} // namespace Json

// //////////////////////////////////////////////////////////////////////
// End of content of file: src/lib_json/json_writer.cpp
// //////////////////////////////////////////////////////////////////////