antlr::LLkParser Class Reference

An LL(k) parser. More...

#include <LLkParser.hpp>

Inheritance diagram for antlr::LLkParser:

Public Member Functions
	LLkParser (const ParserSharedInputState &lexer, int k_)
	An LL(k) parser.
	LLkParser (TokenBuffer &tokenBuf, int k_)
	LLkParser (TokenStream &lexer, int k_)
virtual void	consume ()
	Consume another token from the input stream.
virtual int	LA (unsigned int i)
	Return the token type of the ith token of lookahead where i=1 is the current token being examined by the parser (i.e., it has not been matched yet).
virtual RefToken	LT (unsigned int i)
	Return the i-th token of lookahead.
virtual void	traceIn (const char *rname)
virtual void	traceOut (const char *rname)
Public Member Functions inherited from antlr::Parser
virtual void	setASTNodeFactory (ASTFactory *factory)
	DEPRECATED! Specify the factory to be used during tree building.
virtual void	setASTFactory (ASTFactory *factory)
	Specify the factory to be used during tree building.
virtual ASTFactory *	getASTFactory ()
	Return a pointer to the ASTFactory used.
virtual RefAST	getAST ()=0
	Get the root AST node of the generated AST.
virtual std::string	getFilename () const
	Return the filename of the input file.
virtual void	setFilename (const std ::string &f)
	Set the filename of the input file (used for error reporting).
virtual void	setInputState (ParserSharedInputState state)
virtual ParserSharedInputState	getInputState () const
virtual void	consumeUntil (int tokenType)
	Consume tokens until one matches the given token.
virtual void	consumeUntil (const BitSet &set)
	Consume tokens until one matches the given token set.
virtual void	match (int t)
	Make sure current lookahead symbol matches token type t.
virtual void	matchNot (int t)
virtual void	match (const BitSet &b)
	Make sure current lookahead symbol matches the given set Throw an exception upon mismatch, which is catch by either the error handler or by the syntactic predicate.
virtual unsigned int	mark ()
	Mark a spot in the input and return the position.
virtual void	rewind (unsigned int pos)
	rewind to a previously marked position
virtual void	recover (const RecognitionException &, const BitSet &tokenSet)
	called by the generated parser to do error recovery, override to customize the behaviour.
virtual void	reportError (const RecognitionException &ex)
	Parser error-reporting function can be overridden in subclass.
virtual void	reportError (const std ::string &s)
	Parser error-reporting function can be overridden in subclass.
virtual void	reportWarning (const std ::string &s)
	Parser warning-reporting function can be overridden in subclass.
virtual const char *	getTokenName (int num) const =0
	get the token name for the token number 'num'
virtual const char *const *	getTokenNames () const =0
	get a vector with all token names
virtual int	getNumTokens (void) const =0
	Get the number of tokens defined.
virtual void	traceIndent ()
	Set or change the input token buffer.

Protected Attributes
int	k
	the lookahead this LL(k) parser is using.
Protected Attributes inherited from antlr::Parser
ParserSharedInputState	inputState
ASTFactory *	astFactory
	AST support code; parser and treeparser delegate to this object.
int	traceDepth

Additional Inherited Members
Protected Member Functions inherited from antlr::Parser
	Parser (TokenBuffer &input)
	Parser (TokenBuffer *input)
	Parser (const ParserSharedInputState &state)

Detailed Description

An LL(k) parser.

See also

antlr.Token

antlr.TokenBuffer

antlr.LL1Parser

Definition at line 24 of file LLkParser.hpp.

Constructor & Destructor Documentation

LLkParser() [1/3]

antlr::LLkParser::LLkParser	(	const ParserSharedInputState &	state,
		int	k_ )

An LL(k) parser.

See also

antlr.Token

antlr.TokenBuffer

antlr.LL1Parser

Definition at line 26 of file LLkParser.cpp.

LLkParser() [2/3]

antlr::LLkParser::LLkParser	(	TokenBuffer &	tokenBuf,
		int	k_ )

Definition at line 31 of file LLkParser.cpp.

LLkParser() [3/3]

antlr::LLkParser::LLkParser	(	TokenStream &	lexer,
		int	k_ )

Definition at line 36 of file LLkParser.cpp.

Member Function Documentation

consume()

virtual void antlr::LLkParser::consume ( )

inlinevirtual

Consume another token from the input stream.

Can only write sequentially! If you need 3 tokens ahead, you must consume() 3 times.

Note that it is possible to overwrite tokens that have not been matched. For example, calling consume() 3 times when k=2, means that the first token consumed will be overwritten with the 3rd.

Implements antlr::Parser.

Definition at line 39 of file LLkParser.hpp.

LA()

virtual int antlr::LLkParser::LA ( unsigned int i )

inlinevirtual

Return the token type of the ith token of lookahead where i=1 is the current token being examined by the parser (i.e., it has not been matched yet).

Implements antlr::Parser.

Definition at line 44 of file LLkParser.hpp.

LT()

virtual RefToken antlr::LLkParser::LT ( unsigned int i )

inlinevirtual

Return the i-th token of lookahead.

Implements antlr::Parser.

Definition at line 49 of file LLkParser.hpp.

traceIn()

void antlr::LLkParser::traceIn ( const char * rname )

virtual

Reimplemented from antlr::Parser.

Definition at line 71 of file LLkParser.cpp.

traceOut()

void antlr::LLkParser::traceOut ( const char * rname )

virtual

Reimplemented from antlr::Parser.

Definition at line 77 of file LLkParser.cpp.

Member Data Documentation

k

int antlr::LLkParser::k

protected

the lookahead this LL(k) parser is using.

Definition at line 55 of file LLkParser.hpp.

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The documentation for this class was generated from the following files:

• antlr/LLkParser.hpp
• antlr/LLkParser.cpp