Unserialize a JSON document into a Value. More...

#include <reader.h>

Classes
class	ErrorInfo

class	Token

Public Types
typedef char	Char

typedef const Char *	Location

Public Member Functions
std::string	getFormatedErrorMessages () const
	Returns a user friendly string that list errors in the parsed document. More...

bool	parse (const std::string &document, Value &root, bool collectComments=true)
	Read a Value from a JSON document. More...

bool	parse (const char beginDoc, const char endDoc, Value &root, bool collectComments=true)
	Read a Value from a JSON document. More...

bool	parse (std::istream &is, Value &root, bool collectComments=true)
	Parse from input stream. More...

	Reader ()
	Constructs a Reader allowing all features for parsing. More...

	Reader (const Features &features)
	Constructs a Reader allowing the specified feature set for parsing. More...

Private Types
typedef std::deque< ErrorInfo >	Errors

typedef std::stack< Value * >	Nodes

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

Private Member Functions
void	addComment (Location begin, Location end, CommentPlacement placement)

bool	addError (const std::string &message, Token &token, Location extra=nullptr)

bool	addErrorAndRecover (const std::string &message, Token &token, TokenType skipUntilToken)

Value &	currentValue ()

bool	decodeDouble (Token &token)

bool	decodeNumber (Token &token)

bool	decodeString (Token &token)

bool	decodeString (Token &token, std::string &decoded)

bool	decodeUnicodeCodePoint (Token &token, Location &current, Location end, unsigned int &unicode)

bool	decodeUnicodeEscapeSequence (Token &token, Location &current, Location end, unsigned int &unicode)

bool	expectToken (TokenType type, Token &token, const char *message)

void	getLocationLineAndColumn (Location location, int &line, int &column) const

std::string	getLocationLineAndColumn (Location location) const

Char	getNextChar ()

bool	match (Location pattern, int patternLength)

bool	readArray (Token &token)

bool	readComment ()

bool	readCppStyleComment ()

bool	readCStyleComment ()

void	readNumber ()

bool	readObject (Token &token)

bool	readString ()

bool	readToken (Token &token)

bool	readValue ()

bool	recoverFromError (TokenType skipUntilToken)

void	skipCommentTokens (Token &token)

void	skipSpaces ()

void	skipUntilSpace ()

Private Attributes
Location	begin_

bool	collectComments_

std::string	commentsBefore_

Location	current_

std::string	document_

Location	end_

Errors	errors_

Features	features_

Value *	lastValue_

Location	lastValueEnd_

Nodes	nodes_

Detailed Description

Unserialize a JSON document into a Value.

Definition at line 16 of file reader.h.

Member Typedef Documentation

typedef char Json::Reader::Char

Definition at line 19 of file reader.h.

typedef std::deque<ErrorInfo> Json::Reader::Errors

private

Definition at line 108 of file reader.h.

typedef const Char* Json::Reader::Location

Definition at line 20 of file reader.h.

typedef std::stack<Value *> Json::Reader::Nodes

private

Definition at line 154 of file reader.h.

Member Enumeration Documentation

enum Json::Reader::TokenType

private

Enumerator
tokenEndOfStream
tokenObjectBegin
tokenObjectEnd
tokenArrayBegin
tokenArrayEnd
tokenString
tokenNumber
tokenTrue
tokenFalse
tokenNull
tokenArraySeparator
tokenMemberSeparator
tokenComment
tokenError

Definition at line 74 of file reader.h.

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

Constructor & Destructor Documentation

Json::Reader::Reader ( )

Constructs a Reader allowing all features for parsing.

Json::Reader::Reader ( const Features & features )

Constructs a Reader allowing the specified feature set for parsing.

Member Function Documentation

void Json::Reader::addComment	(	Location	begin,
		Location	end,
		CommentPlacement	placement
	)

private

bool Json::Reader::addError	(	const std::string &	message,
		Token &	token,
		Location	extra = `nullptr`
	)

private

bool Json::Reader::addErrorAndRecover	(	const std::string &	message,
		Token &	token,
		TokenType	skipUntilToken
	)

private

Value& Json::Reader::currentValue ( )

private

bool Json::Reader::decodeDouble ( Token & token )

private

bool Json::Reader::decodeNumber ( Token & token )

private

bool Json::Reader::decodeString ( Token & token )

private

bool Json::Reader::decodeString	(	Token &	token,
		std::string &	decoded
	)

private

bool Json::Reader::decodeUnicodeCodePoint	(	Token &	token,
		Location &	current,
		Location	end,
		unsigned int &	unicode
	)

private

bool Json::Reader::decodeUnicodeEscapeSequence	(	Token &	token,
		Location &	current,
		Location	end,
		unsigned int &	unicode
	)

private

bool Json::Reader::expectToken	(	TokenType	type,
		Token &	token,
		const char *	message
	)

private

std::string Json::Reader::getFormatedErrorMessages ( ) const

Returns a user friendly string that list errors in the parsed document.

Returns: 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.

Referenced by FedRawDataInputSource::grabNextJsonFile().

void Json::Reader::getLocationLineAndColumn	(	Location	location,
		int &	line,
		int &	column
	)		const

private

std::string Json::Reader::getLocationLineAndColumn ( Location location ) const

private

Char Json::Reader::getNextChar ( )

private

bool Json::Reader::match	(	Location	pattern,
		int	patternLength
	)

private

bool Json::Reader::parse	(	const std::string &	document,
		Value &	root,
		bool	collectComments = `true`
	)

Read a Value from a JSON document.

Parameters

document	UTF-8 encoded string containing the document to read.
root	[out] Contains the root value of the document if it was successfully parsed.
collectComments	`true` to collect comment and allow writing them back during serialization, `false` to discard comments. This parameter is ignored if Features::allowComments_ is `false`.

Returns: true if the document was successfully parsed, false if an error occurred.

Referenced by jsoncollector::JSONSerializer::deserialize(), evf::EvFDaqDirector::getNFilesFromEoLS(), FedRawDataInputSource::grabNextJsonFile(), and evf::EvFDaqDirector::readLastLSEntry().

bool Json::Reader::parse	(	const char *	beginDoc,
		const char *	endDoc,
		Value &	root,
		bool	collectComments = `true`
	)

Read a Value from a JSON document.

Parameters

document	UTF-8 encoded string containing the document to read.
root	[out] Contains the root value of the document if it was successfully parsed.
collectComments	`true` to collect comment and allow writing them back during serialization, `false` to discard comments. This parameter is ignored if Features::allowComments_ is `false`.

Returns: true if the document was successfully parsed, false if an error occurred.

bool Json::Reader::parse	(	std::istream &	is,
		Value &	root,
		bool	collectComments = `true`
	)

Parse from input stream.

See also: Json::operator>>(std::istream&, Json::Value&).

bool Json::Reader::readArray ( Token & token )

private

bool Json::Reader::readComment ( )

private

bool Json::Reader::readCppStyleComment ( )

private

bool Json::Reader::readCStyleComment ( )

private

void Json::Reader::readNumber ( )

private

bool Json::Reader::readObject ( Token & token )

private

bool Json::Reader::readString ( )

private

bool Json::Reader::readToken ( Token & token )

private

bool Json::Reader::readValue ( )

private

bool Json::Reader::recoverFromError ( TokenType skipUntilToken )

private

void Json::Reader::skipCommentTokens ( Token & token )

private

void Json::Reader::skipSpaces ( )

private

void Json::Reader::skipUntilSpace ( )

private

Member Data Documentation

Location Json::Reader::begin_

private

Definition at line 158 of file reader.h.

bool Json::Reader::collectComments_

private

Definition at line 165 of file reader.h.

std::string Json::Reader::commentsBefore_

private

Definition at line 163 of file reader.h.

Location Json::Reader::current_

private

Definition at line 160 of file reader.h.

std::string Json::Reader::document_

private

Definition at line 157 of file reader.h.

Location Json::Reader::end_

private

Definition at line 159 of file reader.h.

Errors Json::Reader::errors_

private

Definition at line 156 of file reader.h.

Features Json::Reader::features_

private

Definition at line 164 of file reader.h.

Value* Json::Reader::lastValue_

private

Definition at line 162 of file reader.h.

Location Json::Reader::lastValueEnd_

private

Definition at line 161 of file reader.h.

Nodes Json::Reader::nodes_

private

Definition at line 155 of file reader.h.

Classes

Public Types

Public Member Functions

Private Types

Private Member Functions

Private Attributes

Detailed Description

Member Typedef Documentation

Member Enumeration Documentation

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation