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-rw-r--r--jsoncpp-src-0.5.0/src/lib_json/json_reader.cpp885
1 files changed, 0 insertions, 885 deletions
diff --git a/jsoncpp-src-0.5.0/src/lib_json/json_reader.cpp b/jsoncpp-src-0.5.0/src/lib_json/json_reader.cpp
deleted file mode 100644
index 7c94e612e..000000000
--- a/jsoncpp-src-0.5.0/src/lib_json/json_reader.cpp
+++ /dev/null
@@ -1,885 +0,0 @@
-#include <json/reader.h>
-#include <json/value.h>
-#include <utility>
-#include <cstdio>
-#include <cassert>
-#include <cstring>
-#include <iostream>
-#include <stdexcept>
-
-#if _MSC_VER >= 1400 // VC++ 8.0
-#pragma warning( disable : 4996 ) // disable warning about strdup being deprecated.
-#endif
-
-namespace Json {
-
-// Implementation of class Features
-// ////////////////////////////////
-
-Features::Features()
- : allowComments_( true )
- , strictRoot_( false )
-{
-}
-
-
-Features
-Features::all()
-{
- return Features();
-}
-
-
-Features
-Features::strictMode()
-{
- Features features;
- features.allowComments_ = false;
- features.strictRoot_ = true;
- return features;
-}
-
-// Implementation of class Reader
-// ////////////////////////////////
-
-
-static 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;
-}
-
-static 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;
-}
-
-
-// Class Reader
-// //////////////////////////////////////////////////////////////////
-
-Reader::Reader()
- : features_( Features::all() )
-{
-}
-
-
-Reader::Reader( const Features &features )
- : features_( features )
-{
-}
-
-
-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() )
- {
- currentValue().setComment( commentsBefore_, commentBefore );
- commentsBefore_ = "";
- }
-
-
- switch ( token.type_ )
- {
- case tokenObjectBegin:
- successful = readObject( token );
- break;
- case tokenArrayBegin:
- successful = readArray( token );
- break;
- case tokenNumber:
- successful = decodeNumber( token );
- break;
- case tokenString:
- successful = decodeString( token );
- break;
- case tokenTrue:
- currentValue() = true;
- break;
- case tokenFalse:
- currentValue() = false;
- break;
- case tokenNull:
- currentValue() = Value();
- break;
- default:
- 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
- {
- if ( !commentsBefore_.empty() )
- commentsBefore_ += "\n";
- 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 );
- 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;
- if ( tokenName.type_ != tokenString )
- break;
-
- name = "";
- if ( !decodeString( tokenName, name ) )
- return recoverFromError( tokenObjectEnd );
-
- 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 );
- skipSpaces();
- if ( *current_ == ']' ) // empty array
- {
- Token endArray;
- readToken( endArray );
- return true;
- }
- int index = 0;
- while ( true )
- {
- 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 )
-{
- 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 );
- Location current = token.start_;
- bool isNegative = *current == '-';
- if ( isNegative )
- ++current;
- Value::UInt threshold = (isNegative ? Value::UInt(-Value::minInt)
- : Value::maxUInt) / 10;
- Value::UInt 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 );
- if ( value >= threshold )
- return decodeDouble( token );
- value = value * 10 + Value::UInt(c - '0');
- }
- if ( isNegative )
- currentValue() = -Value::Int( value );
- else if ( value <= Value::UInt(Value::maxInt) )
- currentValue() = Value::Int( value );
- else
- currentValue() = value;
- return true;
-}
-
-
-bool
-Reader::decodeDouble( Token &token )
-{
- double value = 0;
- const int bufferSize = 32;
- int count;
- int length = int(token.end_ - token.start_);
- if ( length <= bufferSize )
- {
- Char buffer[bufferSize];
- memcpy( buffer, token.start_, length );
- buffer[length] = 0;
- count = sscanf( buffer, "%lf", &value );
- }
- else
- {
- std::string buffer( token.start_, token.end_ );
- count = sscanf( buffer.c_str(), "%lf", &value );
- }
-
- if ( count != 1 )
- return addError( "'" + std::string( token.start_, token.end_ ) + "' is not a number.", token );
- currentValue() = value;
- return true;
-}
-
-
-bool
-Reader::decodeString( Token &token )
-{
- std::string decoded;
- if ( !decodeString( token, decoded ) )
- return false;
- currentValue() = decoded;
- return true;
-}
-
-
-bool
-Reader::decodeString( Token &token, std::string &decoded )
-{
- decoded.reserve( token.end_ - token.start_ - 2 );
- Location current = token.start_ + 1; // skip '"'
- Location end = token.end_ - 1; // do not include '"'
- while ( current != end )
- {
- Char c = *current++;
- if ( c == '"' )
- break;
- else if ( c == '\\' )
- {
- if ( current == end )
- return addError( "Empty escape sequence in string", token, current );
- Char escape = *current++;
- switch ( escape )
- {
- case '"': decoded += '"'; break;
- case '/': decoded += '/'; break;
- case '\\': decoded += '\\'; break;
- case 'b': decoded += '\b'; break;
- case 'f': decoded += '\f'; break;
- case 'n': decoded += '\n'; break;
- case 'r': decoded += '\r'; break;
- case 't': decoded += '\t'; break;
- case 'u':
- {
- unsigned int unicode;
- if ( !decodeUnicodeCodePoint( token, current, end, unicode ) )
- return false;
- decoded += codePointToUTF8(unicode);
- }
- break;
- default:
- return addError( "Bad escape sequence in string", token, current );
- }
- }
- else
- {
- decoded += c;
- }
- }
- return true;
-}
-
-bool
-Reader::decodeUnicodeCodePoint( Token &token,
- Location &current,
- Location end,
- unsigned int &unicode )
-{
-
- if ( !decodeUnicodeEscapeSequence( token, current, end, unicode ) )
- return false;
- if (unicode >= 0xD800 && unicode <= 0xDBFF)
- {
- // surrogate pairs
- if (end - current < 6)
- return addError( "additional six characters expected to parse unicode surrogate pair.", token, current );
- unsigned int surrogatePair;
- if (*(current++) == '\\' && *(current++)== 'u')
- {
- if (decodeUnicodeEscapeSequence( token, current, end, surrogatePair ))
- {
- unicode = 0x10000 + ((unicode & 0x3FF) << 10) + (surrogatePair & 0x3FF);
- }
- else
- return false;
- }
- else
- return addError( "expecting another \\u token to begin the second half of a unicode surrogate pair", token, current );
- }
- return true;
-}
-
-bool
-Reader::decodeUnicodeEscapeSequence( Token &token,
- Location &current,
- Location end,
- unsigned int &unicode )
-{
- if ( end - current < 4 )
- return addError( "Bad unicode escape sequence in string: four digits expected.", token, current );
- unicode = 0;
- for ( int index =0; index < 4; ++index )
- {
- Char c = *current++;
- unicode *= 16;
- if ( c >= '0' && c <= '9' )
- unicode += c - '0';
- else if ( c >= 'a' && c <= 'f' )
- unicode += c - 'a' + 10;
- else if ( c >= 'A' && c <= 'F' )
- unicode += c - 'A' + 10;
- else
- return addError( "Bad unicode escape sequence in string: hexadecimal digit expected.", token, current );
- }
- return true;
-}
-
-
-bool
-Reader::addError( const std::string &message,
- Token &token,
- Location extra )
-{
- ErrorInfo info;
- info.token_ = token;
- info.message_ = message;
- info.extra_ = extra;
- errors_.push_back( info );
- return false;
-}
-
-
-bool
-Reader::recoverFromError( TokenType skipUntilToken )
-{
- int errorCount = int(errors_.size());
- Token skip;
- while ( true )
- {
- 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];
- sprintf( buffer, "Line %d, Column %d", line, column );
- return buffer;
-}
-
-
-std::string
-Reader::getFormatedErrorMessages() 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;
-}
-
-#define JSON_ASSERT( condition ) assert( condition );
-std::istream& operator>>( std::istream &sin, Value &root )
-{
- Json::Reader reader;
- bool ok = reader.parse(sin, root, true);
- JSON_ASSERT( ok );
- //if (!ok) throw std::runtime_error(reader.getFormatedErrorMessages());
- return sin;
-}
-
-
-} // namespace Json
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