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	Advtrains mod for minetest.	orwell

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	Commit message (Expand)	Author	Age
*	Moved default train track to separate mod, for integration with advcarts.	Gabriel Pérez-Cerezo	2017-10-25

generated by cgit v1.2.3 (git 2.25.1) at 2024-09-30 02:09:59 +0000

/// Json-cpp amalgated header (http://jsoncpp.sourceforge.net/).
/// It is intended to be used with #include "json/json.h"

// //////////////////////////////////////////////////////////////////////
// Beginning of content of file: LICENSE
// //////////////////////////////////////////////////////////////////////

/*
The JsonCpp library's source code, including accompanying documentation,
tests and demonstration applications, are licensed under the following
conditions...

The author (Baptiste Lepilleur) explicitly disclaims copyright in all
jurisdictions which recognize such a disclaimer. In such jurisdictions,
this software is released into the Public Domain.

In jurisdictions which do not recognize Public Domain property (e.g. Germany as of
2010), this software is Copyright (c) 2007-2010 by Baptiste Lepilleur, and is
released under the terms of the MIT License (see below).

In jurisdictions which recognize Public Domain property, the user of this
software may choose to accept it either as 1) Public Domain, 2) under the
conditions of the MIT License (see below), or 3) under the terms of dual
Public Domain/MIT License conditions described here, as they choose.

The MIT License is about as close to Public Domain as a license can get, and is
described in clear, concise terms at:

   http://en.wikipedia.org/wiki/MIT_License

The full text of the MIT License follows:

========================================================================
Copyright (c) 2007-2010 Baptiste Lepilleur

Permission is hereby granted, free of charge, to any person
obtaining a copy of this software and associated documentation
files (the "Software"), to deal in the Software without
restriction, including without limitation the rights to use, copy,
modify, merge, publish, distribute, sublicense, and/or sell copies
of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
========================================================================
(END LICENSE TEXT)

The MIT license is compatible with both the GPL and commercial
software, affording one all of the rights of Public Domain with the
minor nuisance of being required to keep the above copyright notice
and license text in the source code. Note also that by accepting the
Public Domain "license" you can re-license your copy using whatever
license you like.

*/

// //////////////////////////////////////////////////////////////////////
// End of content of file: LICENSE
// //////////////////////////////////////////////////////////////////////





#ifndef JSON_AMALGATED_H_INCLUDED
# define JSON_AMALGATED_H_INCLUDED
/// If defined, indicates that the source file is amalgated
/// to prevent private header inclusion.
#define JSON_IS_AMALGAMATION
#define JSONCPP_STRING
// //////////////////////////////////////////////////////////////////////
// Beginning of content of file: include/json/version.h
// //////////////////////////////////////////////////////////////////////

// DO NOT EDIT. This file (and "version") is generated by CMake.
// Run CMake configure step to update it.
#ifndef JSON_VERSION_H_INCLUDED
# define JSON_VERSION_H_INCLUDED

# define JSONCPP_VERSION_STRING "0.10.6"
# define JSONCPP_VERSION_MAJOR 0
# define JSONCPP_VERSION_MINOR 10
# define JSONCPP_VERSION_PATCH 6
# define JSONCPP_VERSION_QUALIFIER
# define JSONCPP_VERSION_HEXA ((JSONCPP_VERSION_MAJOR << 24) | (JSONCPP_VERSION_MINOR << 16) | (JSONCPP_VERSION_PATCH << 8))

#endif // JSON_VERSION_H_INCLUDED

// //////////////////////////////////////////////////////////////////////
// End of content of file: include/json/version.h
// //////////////////////////////////////////////////////////////////////






// //////////////////////////////////////////////////////////////////////
// Beginning of content of file: include/json/config.h
// //////////////////////////////////////////////////////////////////////

// Copyright 2007-2010 Baptiste Lepilleur
// Distributed under MIT license, or public domain if desired and
// recognized in your jurisdiction.
// See file LICENSE for detail or copy at http://jsoncpp.sourceforge.net/LICENSE

#ifndef JSON_CONFIG_H_INCLUDED
#define JSON_CONFIG_H_INCLUDED

/// If defined, indicates that json library is embedded in CppTL library.
//# define JSON_IN_CPPTL 1

/// If defined, indicates that json may leverage CppTL library
//#  define JSON_USE_CPPTL 1
/// If defined, indicates that cpptl vector based map should be used instead of
/// std::map
/// as Value container.
//#  define JSON_USE_CPPTL_SMALLMAP 1

// If non-zero, the library uses exceptions to report bad input instead of C
// assertion macros. The default is to use exceptions.
#ifndef JSON_USE_EXCEPTION
#define JSON_USE_EXCEPTION 1
#endif

/// If defined, indicates that the source file is amalgated
/// to prevent private header inclusion.
/// Remarks: it is automatically defined in the generated amalgated header.
// #define JSON_IS_AMALGAMATION

#ifdef JSON_IN_CPPTL
#include <cpptl/config.h>
#ifndef JSON_USE_CPPTL
#define JSON_USE_CPPTL 1
#endif
#endif

#ifdef JSON_IN_CPPTL
#define JSON_API CPPTL_API
#elif defined(JSON_DLL_BUILD)
#if defined(_MSC_VER)
#define JSON_API __declspec(dllexport)
#define JSONCPP_DISABLE_DLL_INTERFACE_WARNING
#endif // if defined(_MSC_VER)
#elif defined(JSON_DLL)
#if defined(_MSC_VER)
#define JSON_API __declspec(dllimport)
#define JSONCPP_DISABLE_DLL_INTERFACE_WARNING
#endif // if defined(_MSC_VER)
#endif // ifdef JSON_IN_CPPTL
#if !defined(JSON_API)
#define JSON_API
#endif

// If JSON_NO_INT64 is defined, then Json only support C++ "int" type for
// integer
// Storages, and 64 bits integer support is disabled.
// #define JSON_NO_INT64 1

#if defined(_MSC_VER) && _MSC_VER <= 1200 // MSVC 6
// Microsoft Visual Studio 6 only support conversion from __int64 to double
// (no conversion from unsigned __int64).
#define JSON_USE_INT64_DOUBLE_CONVERSION 1
// Disable warning 4786 for VS6 caused by STL (identifier was truncated to '255'
// characters in the debug information)
// All projects I've ever seen with VS6 were using this globally (not bothering
// with pragma push/pop).
#pragma warning(disable : 4786)
#endif // if defined(_MSC_VER)  &&  _MSC_VER < 1200 // MSVC 6

#if defined(_MSC_VER) && _MSC_VER >= 1500 // MSVC 2008
/// Indicates that the following function is deprecated.
#define JSONCPP_DEPRECATED(message) __declspec(deprecated(message))
#elif defined(__clang__) && defined(__has_feature)
#if __has_feature(attribute_deprecated_with_message)
#define JSONCPP_DEPRECATED(message)  __attribute__ ((deprecated(message)))
#endif
#elif defined(__GNUC__) &&  (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 5))
#define JSONCPP_DEPRECATED(message)  __attribute__ ((deprecated(message)))
#elif defined(__GNUC__) &&  (__GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 1))
#define JSONCPP_DEPRECATED(message)  __attribute__((__deprecated__))
#endif

#if !defined(JSONCPP_DEPRECATED)
#define JSONCPP_DEPRECATED(message)
#endif // if !defined(JSONCPP_DEPRECATED)

namespace Json {
typedef int Int;
typedef unsigned int UInt;
#if defined(JSON_NO_INT64)
typedef int LargestInt;
typedef unsigned int LargestUInt;
#undef JSON_HAS_INT64
#else                 // if defined(JSON_NO_INT64)
// For Microsoft Visual use specific types as long long is not supported
#if defined(_MSC_VER) // Microsoft Visual Studio
typedef __int64 Int64;
typedef unsigned __int64 UInt64;
#else                 // if defined(_MSC_VER) // Other platforms, use long long
typedef long long int Int64;
typedef unsigned long long int UInt64;
#endif // if defined(_MSC_VER)
typedef Int64 LargestInt;
typedef UInt64 LargestUInt;
#define JSON_HAS_INT64
#endif // if defined(JSON_NO_INT64)
} // end namespace Json

#endif // JSON_CONFIG_H_INCLUDED

// //////////////////////////////////////////////////////////////////////
// End of content of file: include/json/config.h
// //////////////////////////////////////////////////////////////////////






// //////////////////////////////////////////////////////////////////////
// Beginning of content of file: include/json/forwards.h
// //////////////////////////////////////////////////////////////////////

// Copyright 2007-2010 Baptiste Lepilleur
// Distributed under MIT license, or public domain if desired and
// recognized in your jurisdiction.
// See file LICENSE for detail or copy at http://jsoncpp.sourceforge.net/LICENSE

#ifndef JSON_FORWARDS_H_INCLUDED
#define JSON_FORWARDS_H_INCLUDED

#if !defined(JSON_IS_AMALGAMATION)
#include "config.h"
#endif // if !defined(JSON_IS_AMALGAMATION)

namespace Json {

// writer.h
class FastWriter;
class StyledWriter;

// reader.h
class Reader;

// features.h
class Features;

// value.h
typedef unsigned int ArrayIndex;
class StaticString;
class Path;
class PathArgument;
class Value;
class ValueIteratorBase;
class ValueIterator;
class ValueConstIterator;

} // namespace Json

#endif // JSON_FORWARDS_H_INCLUDED

// //////////////////////////////////////////////////////////////////////
// End of content of file: include/json/forwards.h
// //////////////////////////////////////////////////////////////////////






// //////////////////////////////////////////////////////////////////////
// Beginning of content of file: include/json/features.h
// //////////////////////////////////////////////////////////////////////

// Copyright 2007-2010 Baptiste Lepilleur
// Distributed under MIT license, or public domain if desired and
// recognized in your jurisdiction.
// See file LICENSE for detail or copy at http://jsoncpp.sourceforge.net/LICENSE

#ifndef CPPTL_JSON_FEATURES_H_INCLUDED
#define CPPTL_JSON_FEATURES_H_INCLUDED

#if !defined(JSON_IS_AMALGAMATION)
#include "forwards.h"
#endif // if !defined(JSON_IS_AMALGAMATION)

namespace Json {

/** \brief Configuration passed to reader and writer.
 * This configuration object can be used to force the Reader or Writer
 * to behave in a standard conforming way.
 */
class JSON_API Features {
public:
  /** \brief A configuration that allows all features and assumes all strings
   * are UTF-8.
   * - C & C++ comments are allowed
   * - Root object can be any JSON value
   * - Assumes Value strings are encoded in UTF-8
   */
  static Features all();

  /** \brief A configuration that is strictly compatible with the JSON
   * specification.
   * - Comments are forbidden.
   * - Root object must be either an array or an object value.
   * - Assumes Value strings are encoded in UTF-8
   */
  static Features strictMode();

  /** \brief Initialize the configuration like JsonConfig::allFeatures;
   */
  Features();

  /// \c true if comments are allowed. Default: \c true.
  bool allowComments_;

  /// \c true if root must be either an array or an object value. Default: \c
  /// false.
  bool strictRoot_;
};

} // namespace Json

#endif // CPPTL_JSON_FEATURES_H_INCLUDED

// //////////////////////////////////////////////////////////////////////
// End of content of file: include/json/features.h
// //////////////////////////////////////////////////////////////////////






// //////////////////////////////////////////////////////////////////////
// Beginning of content of file: include/json/value.h
// //////////////////////////////////////////////////////////////////////

// Copyright 2007-2010 Baptiste Lepilleur
// Distributed under MIT license, or public domain if desired and
// recognized in your jurisdiction.
// See file LICENSE for detail or copy at http://jsoncpp.sourceforge.net/LICENSE

#ifndef CPPTL_JSON_H_INCLUDED
#define CPPTL_JSON_H_INCLUDED

#if !defined(JSON_IS_AMALGAMATION)
#include "forwards.h"
#endif // if !defined(JSON_IS_AMALGAMATION)
#include <string>
#include <vector>
#include <exception>

#ifndef JSON_USE_CPPTL_SMALLMAP
#include <map>
#else
#include <cpptl/smallmap.h>
#endif
#ifdef JSON_USE_CPPTL
#include <cpptl/forwards.h>
#endif

// Disable warning C4251: <data member>: <type> needs to have dll-interface to
// be used by...
#if defined(JSONCPP_DISABLE_DLL_INTERFACE_WARNING)
#pragma warning(push)
#pragma warning(disable : 4251)
#endif // if defined(JSONCPP_DISABLE_DLL_INTERFACE_WARNING)

//Conditional NORETURN attribute on the throw functions would:
// a) suppress false positives from static code analysis
// b) possibly improve optimization opportunities.
#if !defined(JSONCPP_NORETURN)
#  if defined(_MSC_VER)
#    define JSONCPP_NORETURN __declspec(noreturn)
#  elif defined(__GNUC__)
#    define JSONCPP_NORETURN __attribute__ ((__noreturn__))
#  else
#    define JSONCPP_NORETURN
#  endif
#endif

/** \brief JSON (JavaScript Object Notation).
 */
namespace Json {

/** Base class for all exceptions we throw.
 *
 * We use nothing but these internally. Of course, STL can throw others.
 */
class JSON_API Exception : public std::exception {
public:
  Exception(std::string const& msg);
  virtual ~Exception() throw();
  virtual char const* what() const throw();
protected:
  std::string const msg_;
};

/** Exceptions which the user cannot easily avoid.
 *
 * E.g. out-of-memory (when we use malloc), stack-overflow, malicious input
 *
 * \remark derived from Json::Exception
 */
class JSON_API RuntimeError : public Exception {
public:
  RuntimeError(std::string const& msg);
};

/** Exceptions thrown by JSON_ASSERT/JSON_FAIL macros.
 *
 * These are precondition-violations (user bugs) and internal errors (our bugs).
 *
 * \remark derived from Json::Exception
 */
class JSON_API LogicError : public Exception {
public:
  LogicError(std::string const& msg);
};

/// used internally
JSONCPP_NORETURN void throwRuntimeError(std::string const& msg);
/// used internally
JSONCPP_NORETURN void throwLogicError(std::string const& msg);

/** \brief Type of the value held by a Value object.
 */
enum ValueType {
  nullValue = 0, ///< 'null' value
  intValue,      ///< signed integer value
  uintValue,     ///< unsigned integer value
  realValue,     ///< double value
  stringValue,   ///< UTF-8 string value
  booleanValue,  ///< bool value
  arrayValue,    ///< array value (ordered list)
  objectValue    ///< object value (collection of name/value pairs).
};

enum CommentPlacement {
  commentBefore = 0,      ///< a comment placed on the line before a value
  commentAfterOnSameLine, ///< a comment just after a value on the same line
  commentAfter, ///< a comment on the line after a value (only make sense for
  /// root value)
  numberOfCommentPlacement
};

//# ifdef JSON_USE_CPPTL
//   typedef CppTL::AnyEnumerator<const char *> EnumMemberNames;
//   typedef CppTL::AnyEnumerator<const Value &> EnumValues;
//# endif

/** \brief Lightweight wrapper to tag static string.
 *
 * Value constructor and objectValue member assignement takes advantage of the
 * StaticString and avoid the cost of string duplication when storing the
 * string or the member name.
 *
 * Example of usage:
 * \code
 * Json::Value aValue( StaticString("some text") );
 * Json::Value object;
 * static const StaticString code("code");
 * object[code] = 1234;
 * \endcode
 */
class JSON_API StaticString {
public:
  explicit StaticString(const char* czstring) : c_str_(czstring) {}

  operator const char*() const { return c_str_; }

  const char* c_str() const { return c_str_; }

private:
  const char* c_str_;
};

/** \brief Represents a <a HREF="http://www.json.org">JSON</a> value.
 *
 * This class is a discriminated union wrapper that can represents a:
 * - signed integer [range: Value::minInt - Value::maxInt]
 * - unsigned integer (range: 0 - Value::maxUInt)
 * - double
 * - UTF-8 string
 * - boolean
 * - 'null'
 * - an ordered list of Value
 * - collection of name/value pairs (javascript object)
 *
 * The type of the held value is represented by a #ValueType and
 * can be obtained using type().
 *
 * Values of an #objectValue or #arrayValue can be accessed using operator[]()
 * methods.
 * Non-const methods will automatically create the a #nullValue element
 * if it does not exist.
 * The sequence of an #arrayValue will be automatically resized and initialized
 * with #nullValue. resize() can be used to enlarge or truncate an #arrayValue.
 *
 * The get() methods can be used to obtain default value in the case the
 * required element does not exist.
 *
 * It is possible to iterate over the list of a #objectValue values using
 * the getMemberNames() method.
 *
 * \note #Value string-length fit in size_t, but keys must be < 2^30.
 * (The reason is an implementation detail.) A #CharReader will raise an
 * exception if a bound is exceeded to avoid security holes in your app,
 * but the Value API does *not* check bounds. That is the responsibility
 * of the caller.
 */
class JSON_API Value {
  friend class ValueIteratorBase;
public:
  typedef std::vector<std::string> Members;
  typedef ValueIterator iterator;
  typedef ValueConstIterator const_iterator;
  typedef Json::UInt UInt;
  typedef Json::Int Int;
#if defined(JSON_HAS_INT64)
  typedef Json::UInt64 UInt64;
  typedef Json::Int64 Int64;
#endif // defined(JSON_HAS_INT64)
  typedef Json::LargestInt LargestInt;
  typedef Json::LargestUInt LargestUInt;
  typedef Json::ArrayIndex ArrayIndex;

  static const Value& nullRef;
#if !defined(__ARMEL__)
  /// \deprecated This exists for binary compatibility only. Use nullRef.
  static const Value null;
#endif
  /// Minimum signed integer value that can be stored in a Json::Value.
  static const LargestInt minLargestInt;
  /// Maximum signed integer value that can be stored in a Json::Value.
  static const LargestInt maxLargestInt;
  /// Maximum unsigned integer value that can be stored in a Json::Value.
  static const LargestUInt maxLargestUInt;

  /// Minimum signed int value that can be stored in a Json::Value.
  static const Int minInt;
  /// Maximum signed int value that can be stored in a Json::Value.
  static const Int maxInt;
  /// Maximum unsigned int value that can be stored in a Json::Value.
  static const UInt maxUInt;

#if defined(JSON_HAS_INT64)
  /// Minimum signed 64 bits int value that can be stored in a Json::Value.
  static const Int64 minInt64;
  /// Maximum signed 64 bits int value that can be stored in a Json::Value.
  static const Int64 maxInt64;
  /// Maximum unsigned 64 bits int value that can be stored in a Json::Value.
  static const UInt64 maxUInt64;
#endif // defined(JSON_HAS_INT64)

private:
#ifndef JSONCPP_DOC_EXCLUDE_IMPLEMENTATION
  class CZString {
  public:
    enum DuplicationPolicy {
      noDuplication = 0,
      duplicate,
      duplicateOnCopy
    };
    CZString(ArrayIndex index);
    CZString(char const* str, unsigned length, DuplicationPolicy allocate);
    CZString(CZString const& other);
    ~CZString();
    CZString& operator=(CZString other);
    bool operator<(CZString const& other) const;
    bool operator==(CZString const& other) const;
    ArrayIndex index() const;
    //const char* c_str() const; ///< \deprecated
    char const* data() const;
    unsigned length() const;
    bool isStaticString() const;

  private:
    void swap(CZString& other);

    struct StringStorage {
      unsigned policy_: 2;
      unsigned length_: 30; // 1GB max
    };

    char const* cstr_;  // actually, a prefixed string, unless policy is noDup
    union {
      ArrayIndex index_;
      StringStorage storage_;
    };
  };

public:
#ifndef JSON_USE_CPPTL_SMALLMAP
  typedef std::map<CZString, Value> ObjectValues;
#else
  typedef CppTL::SmallMap<CZString, Value> ObjectValues;
#endif // ifndef JSON_USE_CPPTL_SMALLMAP
#endif // ifndef JSONCPP_DOC_EXCLUDE_IMPLEMENTATION

public:
  /** \brief Create a default Value of the given type.

    This is a very useful constructor.
    To create an empty array, pass arrayValue.
    To create an empty object, pass objectValue.
    Another Value can then be set to this one by assignment.
This is useful since clear() and resize() will not alter types.

    Examples:
\code
Json::Value null_value; // null
Json::Value arr_value(Json::arrayValue); // []
Json::Value obj_value(Json::objectValue); // {}
\endcode
  */
  Value(ValueType type = nullValue);
  Value(Int value);
  Value(UInt value);
#if defined(JSON_HAS_INT64)
  Value(Int64 value);
  Value(UInt64 value);
#endif // if defined(JSON_HAS_INT64)
  Value(double value);
  Value(const char* value); ///< Copy til first 0. (NULL causes to seg-fault.)
  Value(const char* begin, const char* end); ///< Copy all, incl zeroes.
  /** \brief Constructs a value from a static string.

   * Like other value string constructor but do not duplicate the string for
   * internal storage. The given string must remain alive after the call to this
   * constructor.
   * \note This works only for null-terminated strings. (We cannot change the
   *   size of this class, so we have nowhere to store the length,
   *   which might be computed later for various operations.)
   *
   * Example of usage:
   * \code
   * static StaticString foo("some text");
   * Json::Value aValue(foo);
   * \endcode
   */
  Value(const StaticString& value);
  Value(const std::string& value); ///< Copy data() til size(). Embedded zeroes too.
#ifdef JSON_USE_CPPTL
  Value(const CppTL::ConstString& value);
#endif
  Value(bool value);
  /// Deep copy.
  Value(const Value& other);
  ~Value();

  /// Deep copy, then swap(other).
  /// \note Over-write existing comments. To preserve comments, use #swapPayload().
  Value &operator=(const Value &other);
  /// Swap everything.
  void swap(Value& other);
  /// Swap values but leave comments and source offsets in place.
  void swapPayload(Value& other);

  ValueType type() const;

  /// Compare payload only, not comments etc.
  bool operator<(const Value& other) const;
  bool operator<=(const Value& other) const;
  bool operator>=(const Value& other) const;
  bool operator>(const Value& other) const;
  bool operator==(const Value& other) const;
  bool operator!=(const Value& other) const;
  int compare(const Value& other) const;

  const char* asCString() const; ///< Embedded zeroes could cause you trouble!
  std::string asString() const; ///< Embedded zeroes are possible.
  /** Get raw char* of string-value.
   *  \return false if !string. (Seg-fault if str or end are NULL.)
   */
  bool getString(
      char const** begin, char const** end) const;
#ifdef JSON_USE_CPPTL
  CppTL::ConstString asConstString() const;
#endif
  Int asInt() const;
  UInt asUInt() const;
#if defined(JSON_HAS_INT64)
  Int64 asInt64() const;
  UInt64 asUInt64() const;
#endif // if defined(JSON_HAS_INT64)
  LargestInt asLargestInt() const;
  LargestUInt asLargestUInt() const;
  float asFloat() const;
  double asDouble() const;
  bool asBool() const;

  bool isNull() const;
  bool isBool() const;
  bool isInt() const;
  bool isInt64() const;
  bool isUInt() const;
  bool isUInt64() const;
  bool isIntegral() const;
  bool isDouble() const;
  bool isNumeric() const;
  bool isString() const;
  bool isArray() const;
  bool isObject() const;

  bool isConvertibleTo(ValueType other) const;

  /// Number of values in array or object
  ArrayIndex size() const;

  /// \brief Return true if empty array, empty object, or null;
  /// otherwise, false.
  bool empty() const;

  /// Return isNull()
  bool operator!() const;

  /// Remove all object members and array elements.
  /// \pre type() is arrayValue, objectValue, or nullValue
  /// \post type() is unchanged
  void clear();

  /// Resize the array to size elements.
  /// New elements are initialized to null.
  /// May only be called on nullValue or arrayValue.
  /// \pre type() is arrayValue or nullValue
  /// \post type() is arrayValue
  void resize(ArrayIndex size);

  /// Access an array element (zero based index ).
  /// If the array contains less than index element, then null value are
  /// inserted
  /// in the array so that its size is index+1.
  /// (You may need to say 'value[0u]' to get your compiler to distinguish
  ///  this from the operator[] which takes a string.)
  Value& operator[](ArrayIndex index);

  /// Access an array element (zero based index ).
  /// If the array contains less than index element, then null value are
  /// inserted
  /// in the array so that its size is index+1.
  /// (You may need to say 'value[0u]' to get your compiler to distinguish
  ///  this from the operator[] which takes a string.)
  Value& operator[](int index);

  /// Access an array element (zero based index )
  /// (You may need to say 'value[0u]' to get your compiler to distinguish
  ///  this from the operator[] which takes a string.)
  const Value& operator[](ArrayIndex index) const;

  /// Access an array element (zero based index )
  /// (You may need to say 'value[0u]' to get your compiler to distinguish
  ///  this from the operator[] which takes a string.)
  const Value& operator[](int index) const;

  /// If the array contains at least index+1 elements, returns the element
  /// value,
  /// otherwise returns defaultValue.
  Value get(ArrayIndex index, const Value& defaultValue) const;
  /// Return true if index < size().
  bool isValidIndex(ArrayIndex index) const;
  /// \brief Append value to array at the end.
  ///
  /// Equivalent to jsonvalue[jsonvalue.size()] = value;
  Value& append(const Value& value);

  /// Access an object value by name, create a null member if it does not exist.
  /// \note Because of our implementation, keys are limited to 2^30 -1 chars.
  ///  Exceeding that will cause an exception.
  Value& operator[](const char* key);
  /// Access an object value by name, returns null if there is no member with
  /// that name.
  const Value& operator[](const char* key) const;
  /// Access an object value by name, create a null member if it does not exist.
  /// \param key may contain embedded nulls.
  Value& operator[](const std::string& key);
  /// Access an object value by name, returns null if there is no member with
  /// that name.
  /// \param key may contain embedded nulls.
  const Value& operator[](const std::string& key) const;
  /** \brief Access an object value by name, create a null member if it does not
   exist.

   * If the object has no entry for that name, then the member name used to store
   * the new entry is not duplicated.
   * Example of use:
   * \code
   * Json::Value object;
   * static const StaticString code("code");
   * object[code] = 1234;
   * \endcode
   */
  Value& operator[](const StaticString& key);
#ifdef JSON_USE_CPPTL
  /// Access an object value by name, create a null member if it does not exist.
  Value& operator[](const CppTL::ConstString& key);
  /// Access an object value by name, returns null if there is no member with
  /// that name.
  const Value& operator[](const CppTL::ConstString& key) const;
#endif
  /// Return the member named key if it exist, defaultValue otherwise.
  /// \note deep copy
  Value get(const char* key, const Value& defaultValue) const;
  /// Return the member named key if it exist, defaultValue otherwise.
  /// \note deep copy
  /// \note key may contain embedded nulls.
  Value get(const char* begin, const char* end, const Value& defaultValue) const;
  /// Return the member named key if it exist, defaultValue otherwise.
  /// \note deep copy
  /// \param key may contain embedded nulls.
  Value get(const std::string& key, const Value& defaultValue) const;
#ifdef JSON_USE_CPPTL
  /// Return the member named key if it exist, defaultValue otherwise.
  /// \note deep copy
  Value get(const CppTL::ConstString& key, const Value& defaultValue) const;
#endif
  /// Most general and efficient version of isMember()const, get()const,
  /// and operator[]const
  /// \note As stated elsewhere, behavior is undefined if (end-begin) >= 2^30
  Value const* find(char const* begin, char const* end) const;
  /// Most general and efficient version of object-mutators.
  /// \note As stated elsewhere, behavior is undefined if (end-begin) >= 2^30
  /// \return non-zero, but JSON_ASSERT if this is neither object nor nullValue.
  Value const* demand(char const* begin, char const* end);
  /// \brief Remove and return the named member.
  ///
  /// Do nothing if it did not exist.
  /// \return the removed Value, or null.
  /// \pre type() is objectValue or nullValue
  /// \post type() is unchanged
  /// \deprecated
  Value removeMember(const char* key);
  /// Same as removeMember(const char*)
  /// \param key may contain embedded nulls.
  /// \deprecated
  Value removeMember(const std::string& key);
  /// Same as removeMember(const char* begin, const char* end, Value* removed),
  /// but 'key' is null-terminated.
  bool removeMember(const char* key, Value* removed);
  /** \brief Remove the named map member.

      Update 'removed' iff removed.
      \param key may contain embedded nulls.
      \return true iff removed (no exceptions)
  */
  bool removeMember(std::string const& key, Value* removed);
  /// Same as removeMember(std::string const& key, Value* removed)
  bool removeMember(const char* begin, const char* end, Value* removed);
  /** \brief Remove the indexed array element.

      O(n) expensive operations.
      Update 'removed' iff removed.
      \return true iff removed (no exceptions)
  */
  bool removeIndex(ArrayIndex i, Value* removed);

  /// Return true if the object has a member named key.
  /// \note 'key' must be null-terminated.
  bool isMember(const char* key) const;
  /// Return true if the object has a member named key.
  /// \param key may contain embedded nulls.
  bool isMember(const std::string& key) const;
  /// Same as isMember(std::string const& key)const
  bool isMember(const char* begin, const char* end) const;
#ifdef JSON_USE_CPPTL
  /// Return true if the object has a member named key.
  bool isMember(const CppTL::ConstString& key) const;
#endif

  /// \brief Return a list of the member names.
  ///
  /// If null, return an empty list.
  /// \pre type() is objectValue or nullValue
  /// \post if type() was nullValue, it remains nullValue
  Members getMemberNames() const;

  //# ifdef JSON_USE_CPPTL
  //      EnumMemberNames enumMemberNames() const;
  //      EnumValues enumValues() const;
  //# endif

  /// \deprecated Always pass len.
  JSONCPP_DEPRECATED("Use setComment(std::string const&) instead.")
  void setComment(const char* comment, CommentPlacement placement);
  /// Comments must be //... or /* ... */
  void setComment(const char* comment, size_t len, CommentPlacement placement);
  /// Comments must be //... or /* ... */
  void setComment(const std::string& comment, CommentPlacement placement);
  bool hasComment(CommentPlacement placement) const;
  /// Include delimiters and embedded newlines.
  std::string getComment(CommentPlacement placement) const;

  std::string toStyledString() const;

  const_iterator begin() const;
  const_iterator end() const;

  iterator begin();
  iterator end();

private:
  void initBasic(ValueType type, bool allocated = false);

  Value& resolveReference(const char* key);
  Value& resolveReference(const char* key, const char* end);

  struct CommentInfo {
    CommentInfo();
    ~CommentInfo();

    void setComment(const char* text, size_t len);

    char* comment_;
  };

  // struct MemberNamesTransform
  //{
  //   typedef const char *result_type;
  //   const char *operator()( const CZString &name ) const
  //   {
  //      return name.c_str();
  //   }
  //};

  union ValueHolder {
    LargestInt int_;
    LargestUInt uint_;
    double real_;
    bool bool_;
    char* string_;  // actually ptr to unsigned, followed by str, unless !allocated_
    ObjectValues* map_;
  } value_;
  ValueType type_ : 8;
  unsigned int allocated_ : 1; // Notes: if declared as bool, bitfield is useless.
                               // If not allocated_, string_ must be null-terminated.
  CommentInfo* comments_;
};

/** \brief Experimental and untested: represents an element of the "path" to
 * access a node.
 */
class JSON_API PathArgument {
public:
  friend class Path;

  PathArgument();
  PathArgument(ArrayIndex index);
  PathArgument(const char* key);
  PathArgument(const std::string& key);

private:
  enum Kind {
    kindNone = 0,
    kindIndex,
    kindKey
  };
  std::string key_;
  ArrayIndex index_;
  Kind kind_;
};

/** \brief Experimental and untested: represents a "path" to access a node.
 *
 * Syntax:
 * - "." => root node
 * - ".[n]" => elements at index 'n' of root node (an array value)
 * - ".name" => member named 'name' of root node (an object value)
 * - ".name1.name2.name3"
 * - ".[0][1][2].name1[3]"
 * - ".%" => member name is provided as parameter
 * - ".[%]" => index is provied as parameter
 */
class JSON_API Path {
public:
  Path(const std::string& path,
       const PathArgument& a1 = PathArgument(),
       const PathArgument& a2 = PathArgument(),
       const PathArgument& a3 = PathArgument(),
       const PathArgument& a4 = PathArgument(),
       const PathArgument& a5 = PathArgument());

  const Value& resolve(const Value& root) const;
  Value resolve(const Value& root, const Value& defaultValue) const;
  /// Creates the "path" to access the specified node and returns a reference on
  /// the node.
  Value& make(Value& root) const;

private:
  typedef std::vector<const PathArgument*> InArgs;
  typedef std::vector<PathArgument> Args;

  void makePath(const std::string& path, const InArgs& in);
  void addPathInArg(const std::string& path,
                    const InArgs& in,
                    InArgs::const_iterator& itInArg,
                    PathArgument::Kind kind);
  void invalidPath(const std::string& path, int location);

  Args args_;
};

/** \brief base class for Value iterators.
 *
 */
class JSON_API ValueIteratorBase {
public:
  typedef std::bidirectional_iterator_tag iterator_category;
  typedef unsigned int size_t;
  typedef int difference_type;
  typedef ValueIteratorBase SelfType;

  bool operator==(const SelfType& other) const { return isEqual(other); }

  bool operator!=(const SelfType& other) const { return !isEqual(other); }

  difference_type operator-(const SelfType& other) const {
    return other.computeDistance(*this);
  }

  /// Return either the index or the member name of the referenced value as a
  /// Value.
  Value key() const;

  /// Return the index of the referenced Value, or -1 if it is not an arrayValue.
  UInt index() const;

  /// Return the member name of the referenced Value, or "" if it is not an
  /// objectValue.
  /// \note Avoid `c_str()` on result, as embedded zeroes are possible.
  std::string name() const;

  /// Return the member name of the referenced Value. "" if it is not an
  /// objectValue.
  /// \deprecated This cannot be used for UTF-8 strings, since there can be embedded nulls.
  JSONCPP_DEPRECATED("Use `key = name();` instead.")
  char const* memberName() const;
  /// Return the member name of the referenced Value, or NULL if it is not an
  /// objectValue.
  /// \note Better version than memberName(). Allows embedded nulls.
  char const* memberName(char const** end) const;

protected:
  Value& deref() const;

  void increment();

  void decrement();

  difference_type computeDistance(const SelfType& other) const;

  bool isEqual(const SelfType& other) const;

  void copy(const SelfType& other);

private:
  Value::ObjectValues::iterator current_;
  // Indicates that iterator is for a null value.
  bool isNull_;

public:
  // For some reason, BORLAND needs these at the end, rather
  // than earlier. No idea why.
  ValueIteratorBase();
  explicit ValueIteratorBase(const Value::ObjectValues::iterator& current);
};

/** \brief const iterator for object and array value.
 *
 */
class JSON_API ValueConstIterator : public ValueIteratorBase {
  friend class Value;

public:
  typedef const Value value_type;
  //typedef unsigned int size_t;
  //typedef int difference_type;
  typedef const Value& reference;
  typedef const Value* pointer;
  typedef ValueConstIterator SelfType;

  ValueConstIterator();

private:
/*! \internal Use by Value to create an iterator.
 */
  explicit ValueConstIterator(const Value::ObjectValues::iterator& current);
public:
  SelfType& operator=(const ValueIteratorBase& other);

  SelfType operator++(int) {
    SelfType temp(*this);
    ++*this;
    return temp;
  }

  SelfType operator--(int) {
    SelfType temp(*this);
    --*this;
    return temp;
  }

  SelfType& operator--() {
    decrement();
    return *this;
  }

  SelfType& operator++() {
    increment();
    return *this;
  }

  reference operator*() const { return deref(); }

  pointer operator->() const { return &deref(); }
};

/** \brief Iterator for object and array value.
 */
class JSON_API ValueIterator : public ValueIteratorBase {
  friend class Value;

public:
  typedef Value value_type;
  typedef unsigned int size_t;
  typedef int difference_type;
  typedef Value& reference;
  typedef Value* pointer;
  typedef ValueIterator SelfType;

  ValueIterator();
  ValueIterator(const ValueConstIterator& other);
  ValueIterator(const ValueIterator& other);

private:
/*! \internal Use by Value to create an iterator.
 */
  explicit ValueIterator(const Value::ObjectValues::iterator& current);
public:
  SelfType& operator=(const SelfType& other);

  SelfType operator++(int) {
    SelfType temp(*this);
    ++*this;
    return temp;
  }

  SelfType operator--(int) {
    SelfType temp(*this);
    --*this;
    return temp;
  }

  SelfType& operator--() {
    decrement();
    return *this;
  }

  SelfType& operator++() {
    increment();
    return *this;
  }

  reference operator*() const { return deref(); }

  pointer operator->() const { return &deref(); }
};

} // namespace Json


namespace std {
/// Specialize std::swap() for Json::Value.
template<>
inline void swap(Json::Value& a, Json::Value& b) { a.swap(b); }
}


#if defined(JSONCPP_DISABLE_DLL_INTERFACE_WARNING)
#pragma warning(pop)
#endif // if defined(JSONCPP_DISABLE_DLL_INTERFACE_WARNING)

#endif // CPPTL_JSON_H_INCLUDED

// //////////////////////////////////////////////////////////////////////
// End of content of file: include/json/value.h
// //////////////////////////////////////////////////////////////////////






// //////////////////////////////////////////////////////////////////////
// Beginning of content of file: include/json/reader.h
// //////////////////////////////////////////////////////////////////////

// Copyright 2007-2010 Baptiste Lepilleur
// Distributed under MIT license, or public domain if desired and
// recognized in your jurisdiction.
// See file LICENSE for detail or copy at http://jsoncpp.sourceforge.net/LICENSE

#ifndef CPPTL_JSON_READER_H_INCLUDED
#define CPPTL_JSON_READER_H_INCLUDED

#if !defined(JSON_IS_AMALGAMATION)
#include "features.h"
#include "value.h"
#endif // if !defined(JSON_IS_AMALGAMATION)
#include <deque>
#include <iosfwd>
#include <stack>
#include <string>
#include <istream>

// Disable warning C4251: <data member>: <type> needs to have dll-interface to
// be used by...
#if defined(JSONCPP_DISABLE_DLL_INTERFACE_WARNING)
#pragma warning(push)
#pragma warning(disable : 4251)
#endif // if defined(JSONCPP_DISABLE_DLL_INTERFACE_WARNING)

namespace Json {

/** \brief Unserialize a <a HREF="http://www.json.org">JSON</a> document into a
 *Value.
 *
 * \deprecated Use CharReader and CharReaderBuilder.
 */
class JSON_API Reader {
public:
  typedef char Char;
  typedef const Char* Location;

  /** \brief Constructs a Reader allowing all features
   * for parsing.
   */
  Reader();

  /** \brief Constructs a Reader allowing the specified feature set
   * for parsing.
   */
  Reader(const Features& features);

  /** \brief Read a Value from a <a HREF="http://www.json.org">JSON</a>
   * document.
   * \param document UTF-8 encoded string containing the document to read.
   * \param root [out] Contains the root value of the document if it was
   *             successfully parsed.
   * \param collectComments \c true to collect comment and allow writing them
   * back during
   *                        serialization, \c false to discard comments.
   *                        This parameter is ignored if
   * Features::allowComments_
   *                        is \c false.
   * \return \c true if the document was successfully parsed, \c false if an
   * error occurred.
   */
  bool
  parse(const std::string& document, Value& root, bool collectComments = true);

  /** \brief Read a Value from a <a HREF="http://www.json.org">JSON</a>
   document.
   * \param beginDoc Pointer on the beginning of the UTF-8 encoded string of the
   document to read.
   * \param endDoc Pointer on the end of the UTF-8 encoded string of the
   document to read.
   *               Must be >= beginDoc.
   * \param root [out] Contains the root value of the document if it was
   *             successfully parsed.
   * \param collectComments \c true to collect comment and allow writing them
   back during
   *                        serialization, \c false to discard comments.
   *                        This parameter is ignored if
   Features::allowComments_
   *                        is \c false.
   * \return \c true if the document was successfully parsed, \c false if an
   error occurred.
   */
  bool parse(const char* beginDoc,
             const char* endDoc,
             Value& root,
             bool collectComments = true);

  /// \brief Parse from input stream.
  /// \see Json::operator>>(std::istream&, Json::Value&).
  bool parse(std::istream& is, Value& root, bool collectComments = true);

  /** \brief Returns a user friendly string that list errors in the parsed
   * document.
   * \return Formatted error message with the list of errors with their location
   * in
   *         the parsed document. An empty string is returned if no error
   * occurred
   *         during parsing.
   * \deprecated Use getFormattedErrorMessages() instead (typo fix).
   */
  JSONCPP_DEPRECATED("Use getFormattedErrorMessages() instead.")
  std::string getFormatedErrorMessages() const;

  /** \brief Returns a user friendly string that list errors in the parsed
   * document.
   * \return Formatted error message with the list of errors with their location
   * in
   *         the parsed document. An empty string is returned if no error
   * occurred
   *         during parsing.
   */
  std::string getFormattedErrorMessages() const;

private:
  enum TokenType {
    tokenEndOfStream = 0,
    tokenObjectBegin,
    tokenObjectEnd,
    tokenArrayBegin,
    tokenArrayEnd,
    tokenString,
    tokenNumber,
    tokenTrue,
    tokenFalse,
    tokenNull,
    tokenArraySeparator,
    tokenMemberSeparator,
    tokenComment,
    tokenError
  };

  class Token {
  public:
    TokenType type_;
    Location start_;
    Location end_;
  };

  class ErrorInfo {
  public:
    Token token_;
    std::string message_;
    Location extra_;
  };

  typedef std::deque<ErrorInfo> Errors;

  bool readToken(Token& token);
  void skipSpaces();
  bool match(Location pattern, int patternLength);
  bool readComment();
  bool readCStyleComment();
  bool readCppStyleComment();
  bool readString();
  void readNumber();
  bool readValue();
  bool readObject(Token& token);
  bool readArray(Token& token);
  bool decodeNumber(Token& token);
  bool decodeNumber(Token& token, Value& decoded);
  bool decodeString(Token& token);
  bool decodeString(Token& token, std::string& decoded);
  bool decodeDouble(Token& token);
  bool decodeDouble(Token& token, Value& decoded);
  bool decodeUnicodeCodePoint(Token& token,
                              Location& current,
                              Location end,
                              unsigned int& unicode);
  bool decodeUnicodeEscapeSequence(Token& token,
                                   Location& current,
                                   Location end,
                                   unsigned int& unicode);
  bool addError(const std::string& message, Token& token, Location extra = 0);
  bool recoverFromError(TokenType skipUntilToken);
  bool addErrorAndRecover(const std::string& message,
                          Token& token,
                          TokenType skipUntilToken);
  void skipUntilSpace();
  Value& currentValue();
  Char getNextChar();
  void
  getLocationLineAndColumn(Location location, int& line, int& column) const;
  std::string getLocationLineAndColumn(Location location) const;
  void addComment(Location begin, Location end, CommentPlacement placement);
  void skipCommentTokens(Token& token);

  typedef std::stack<Value*> Nodes;
  Nodes nodes_;
  Errors errors_;
  std::string document_;
  Location begin_;
  Location end_;
  Location current_;
  Location lastValueEnd_;
  Value* lastValue_;
  std::string commentsBefore_;
  Features features_;
  bool collectComments_;
};  // Reader

/** Interface for reading JSON from a char array.
 */
class JSON_API CharReader {
public:
  virtual ~CharReader() {}
  /** \brief Read a Value from a <a HREF="http://www.json.org">JSON</a>
   document.
   * The document must be a UTF-8 encoded string containing the document to read.
   *
   * \param beginDoc Pointer on the beginning of the UTF-8 encoded string of the
   document to read.
   * \param endDoc Pointer on the end of the UTF-8 encoded string of the
   document to read.
   *        Must be >= beginDoc.
   * \param root [out] Contains the root value of the document if it was
   *             successfully parsed.
   * \param errs [out] Formatted error messages (if not NULL)
   *        a user friendly string that lists errors in the parsed
   * document.
   * \return \c true if the document was successfully parsed, \c false if an
   error occurred.
   */
  virtual bool parse(
      char const* beginDoc, char const* endDoc,
      Value* root, std::string* errs) = 0;

  class Factory {
  public:
    virtual ~Factory() {}
    /** \brief Allocate a CharReader via operator new().
     * \throw std::exception if something goes wrong (e.g. invalid settings)
     */
    virtual CharReader* newCharReader() const = 0;
  };  // Factory
};  // CharReader

/** \brief Build a CharReader implementation.

Usage:
\code
  using namespace Json;
  CharReaderBuilder builder;
  builder["collectComments"] = false;
  Value value;
  std::string errs;
  bool ok = parseFromStream(builder, std::cin, &value, &errs);
\endcode
*/
class JSON_API CharReaderBuilder : public CharReader::Factory {
public:
  // Note: We use a Json::Value so that we can add data-members to this class
  // without a major version bump.
  /** Configuration of this builder.
    These are case-sensitive.
    Available settings (case-sensitive):
    - `"collectComments": false or true`
      - true to collect comment and allow writing them
        back during serialization, false to discard comments.
        This parameter is ignored if allowComments is false.
    - `"allowComments": false or true`
      - true if comments are allowed.
    - `"strictRoot": false or true`
      - true if root must be either an array or an object value
    - `"allowDroppedNullPlaceholders": false or true`
      - true if dropped null placeholders are allowed. (See StreamWriterBuilder.)
    - `"allowNumericKeys": false or true`
      - true if numeric object keys are allowed.
    - `"allowSingleQuotes": false or true`
      - true if '' are allowed for strings (both keys and values)
    - `"stackLimit": integer`
      - Exceeding stackLimit (recursive depth of `readValue()`) will
        cause an exception.
      - This is a security issue (seg-faults caused by deeply nested JSON),
        so the default is low.
    - `"failIfExtra": false or true`
      - If true, `parse()` returns false when extra non-whitespace trails
        the JSON value in the input string.
    - `"rejectDupKeys": false or true`
      - If true, `parse()` returns false when a key is duplicated within an object.
    - `"allowSpecialFloats": false or true`
      - If true, special float values (NaNs and infinities) are allowed
        and their values are lossfree restorable.

    You can examine 'settings_` yourself
    to see the defaults. You can also write and read them just like any
    JSON Value.
    \sa setDefaults()
    */
  Json::Value settings_;

  CharReaderBuilder();
  virtual ~CharReaderBuilder();

  virtual CharReader* newCharReader() const;

  /** \return true if 'settings' are legal and consistent;
   *   otherwise, indicate bad settings via 'invalid'.
   */
  bool validate(Json::Value* invalid) const;

  /** A simple way to update a specific setting.
   */
  Value& operator[](std::string key);

  /** Called by ctor, but you can use this to reset settings_.
   * \pre 'settings' != NULL (but Json::null is fine)
   * \remark Defaults:
   * \snippet src/lib_json/json_reader.cpp CharReaderBuilderDefaults
   */
  static void setDefaults(Json::Value* settings);
  /** Same as old Features::strictMode().
   * \pre 'settings' != NULL (but Json::null is fine)
   * \remark Defaults:
   * \snippet src/lib_json/json_reader.cpp CharReaderBuilderStrictMode
   */
  static void strictMode(Json::Value* settings);
};

/** Consume entire stream and use its begin/end.
  * Someday we might have a real StreamReader, but for now this
  * is convenient.
  */
bool JSON_API parseFromStream(
    CharReader::Factory const&,
    std::istream&,
    Value* root, std::string* errs);

/** \brief Read from 'sin' into 'root'.

 Always keep comments from the input JSON.

 This can be used to read a file into a particular sub-object.
 For example:
 \code
 Json::Value root;
 cin >> root["dir"]["file"];
 cout << root;
 \endcode
 Result:
 \verbatim
 {
 "dir": {
     "file": {
     // The input stream JSON would be nested here.
     }
 }
 }
 \endverbatim
 \throw std::exception on parse error.
 \see Json::operator<<()
*/
JSON_API std::istream& operator>>(std::istream&, Value&);

} // namespace Json

#if defined(JSONCPP_DISABLE_DLL_INTERFACE_WARNING)
#pragma warning(pop)
#endif // if defined(JSONCPP_DISABLE_DLL_INTERFACE_WARNING)

#endif // CPPTL_JSON_READER_H_INCLUDED

// //////////////////////////////////////////////////////////////////////
// End of content of file: include/json/reader.h
// //////////////////////////////////////////////////////////////////////






// //////////////////////////////////////////////////////////////////////
// Beginning of content of file: include/json/writer.h
// //////////////////////////////////////////////////////////////////////

// Copyright 2007-2010 Baptiste Lepilleur
// Distributed under MIT license, or public domain if desired and
// recognized in your jurisdiction.
// See file LICENSE for detail or copy at http://jsoncpp.sourceforge.net/LICENSE

#ifndef JSON_WRITER_H_INCLUDED
#define JSON_WRITER_H_INCLUDED

#if !defined(JSON_IS_AMALGAMATION)
#include "value.h"
#endif // if !defined(JSON_IS_AMALGAMATION)
#include <vector>
#include <string>
#include <ostream>

// Disable warning C4251: <data member>: <type> needs to have dll-interface to
// be used by...
#if defined(JSONCPP_DISABLE_DLL_INTERFACE_WARNING)
#pragma warning(push)
#pragma warning(disable : 4251)
#endif // if defined(JSONCPP_DISABLE_DLL_INTERFACE_WARNING)

namespace Json {

class Value;

/**

Usage:
\code
  using namespace Json;
  void writeToStdout(StreamWriter::Factory const& factory, Value const& value) {
    std::unique_ptr<StreamWriter> const writer(
      factory.newStreamWriter());
    writer->write(value, &std::cout);
    std::cout << std::endl;  // add lf and flush
  }
\endcode
*/
class JSON_API StreamWriter {
protected:
  std::ostream* sout_;  // not owned; will not delete
public:
  StreamWriter();
  virtual ~StreamWriter();
  /** Write Value into document as configured in sub-class.
      Do not take ownership of sout, but maintain a reference during function.
      \pre sout != NULL
      \return zero on success (For now, we always return zero, so check the stream instead.)
      \throw std::exception possibly, depending on configuration
   */
  virtual int write(Value const& root, std::ostream* sout) = 0;

  /** \brief A simple abstract factory.
   */
  class JSON_API Factory {
  public:
    virtual ~Factory();
    /** \brief Allocate a CharReader via operator new().
     * \throw std::exception if something goes wrong (e.g. invalid settings)
     */
    virtual StreamWriter* newStreamWriter() const = 0;
  };  // Factory
};  // StreamWriter

/** \brief Write into stringstream, then return string, for convenience.
 * A StreamWriter will be created from the factory, used, and then deleted.
 */
std::string JSON_API writeString(StreamWriter::Factory const& factory, Value const& root);


/** \brief Build a StreamWriter implementation.

Usage:
\code
  using namespace Json;
  Value value = ...;
  StreamWriterBuilder builder;
  builder["commentStyle"] = "None";
  builder["indentation"] = "   ";  // or whatever you like
  std::unique_ptr<Json::StreamWriter> writer(
      builder.newStreamWriter());
  writer->write(value, &std::cout);
  std::cout << std::endl;  // add lf and flush
\endcode