workspace/conan/dev_essential/1.3.3/dw/stable/package/37682420cd166e229516a41c8d6a139a0b13e1e1/include/json/reader.h

// Copyright 2007-2010 Baptiste Lepilleur and The JsonCpp Authors
// 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)
 
#pragma pack(push, 8)
 
namespace Json {
 
class JSONCPP_DEPRECATED("Use CharReader and CharReaderBuilder instead") JSON_API Reader {
public:
  typedef char Char;
  typedef const Char* Location;
 
  struct StructuredError {
    ptrdiff_t offset_start;
    ptrdiff_t offset_limit;
    JSONCPP_STRING message;
  };
 
  Reader();
 
  Reader(const Features& features);
 
  bool
  parse(const std::string& document, Value& root, bool collectComments = true);
 
  bool parse(const char* beginDoc,
             const char* endDoc,
             Value& root,
             bool collectComments = true);
 
  bool parse(JSONCPP_ISTREAM& is, Value& root, bool collectComments = true);
 
  JSONCPP_DEPRECATED("Use getFormattedErrorMessages() instead.")
  JSONCPP_STRING getFormatedErrorMessages() const;
 
  JSONCPP_STRING getFormattedErrorMessages() const;
 
  std::vector<StructuredError> getStructuredErrors() const;
 
  bool pushError(const Value& value, const JSONCPP_STRING& message);
 
  bool pushError(const Value& value, const JSONCPP_STRING& message, const Value& extra);
 
  bool good() 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_;
    JSONCPP_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, JSONCPP_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 JSONCPP_STRING& message, Token& token, Location extra = 0);
  bool recoverFromError(TokenType skipUntilToken);
  bool addErrorAndRecover(const JSONCPP_STRING& message,
                          Token& token,
                          TokenType skipUntilToken);
  void skipUntilSpace();
  Value& currentValue();
  Char getNextChar();
  void
  getLocationLineAndColumn(Location location, int& line, int& column) const;
  JSONCPP_STRING getLocationLineAndColumn(Location location) const;
  void addComment(Location begin, Location end, CommentPlacement placement);
  void skipCommentTokens(Token& token);
 
  static bool containsNewLine(Location begin, Location end);
  static JSONCPP_STRING normalizeEOL(Location begin, Location end);
 
  typedef std::stack<Value*> Nodes;
  Nodes nodes_;
  Errors errors_;
  JSONCPP_STRING document_;
  Location begin_;
  Location end_;
  Location current_;
  Location lastValueEnd_;
  Value* lastValue_;
  JSONCPP_STRING commentsBefore_;
  Features features_;
  bool collectComments_;
};  // Reader
 
class JSON_API CharReader {
public:
  virtual ~CharReader() {}
  virtual bool parse(
      char const* beginDoc, char const* endDoc,
      Value* root, JSONCPP_STRING* errs) = 0;
 
  class JSON_API Factory {
  public:
    virtual ~Factory() {}
    virtual CharReader* newCharReader() const = 0;
  };  // Factory
};  // CharReader
 
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.
  Json::Value settings_;
 
  CharReaderBuilder();
  ~CharReaderBuilder() JSONCPP_OVERRIDE;
 
  CharReader* newCharReader() const JSONCPP_OVERRIDE;
 
  bool validate(Json::Value* invalid) const;
 
  Value& operator[](JSONCPP_STRING key);
 
  static void setDefaults(Json::Value* settings);
  static void strictMode(Json::Value* settings);
};
 
bool JSON_API parseFromStream(
    CharReader::Factory const&,
    JSONCPP_ISTREAM&,
    Value* root, std::string* errs);
 
JSON_API JSONCPP_ISTREAM& operator>>(JSONCPP_ISTREAM&, Value&);
 
} // namespace Json
 
#pragma pack(pop)
 
#if defined(JSONCPP_DISABLE_DLL_INTERFACE_WARNING)
#pragma warning(pop)
#endif // if defined(JSONCPP_DISABLE_DLL_INTERFACE_WARNING)
 
#endif // CPPTL_JSON_READER_H_INCLUDED