antlr

Class LLkParser

java.lang.Object

antlr.Parser

antlr.LLkParser

Direct Known Subclasses:

ANTLRParser, ANTLRTokdefParser, LLkDebuggingParser, ParseTreeDebugParser, Preprocessor

public class LLkParser
extends Parser

An LL(k) parser.

See Also:

Token, TokenBuffer

Field Summary

Fields inherited from class antlr.Parser

astFactory, inputState, returnAST, tokenNames, tokenTypeToASTClassMap, traceDepth

Constructor Summary

Constructors

Constructor and Description
LLkParser(int k_)
LLkParser(ParserSharedInputState state, int k_)
LLkParser(TokenBuffer tokenBuf, int k_)
LLkParser(TokenStream lexer, int k_)

Method Summary

Modifier and Type	Method and Description
void	consume() Consume another token from the input stream.
int	LA(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).
Token	LT(int i) Return the ith token of lookahead
void	traceIn(String rname)
void	traceOut(String rname)

Methods inherited from class antlr.Parser

addMessageListener, addParserListener, addParserMatchListener, addParserTokenListener, addSemanticPredicateListener, addSyntacticPredicateListener, addTraceListener, consumeUntil, consumeUntil, defaultDebuggingSetup, getAST, getASTFactory, getFilename, getInputState, getTokenName, getTokenNames, getTokenTypeToASTClassMap, isDebugMode, mark, match, match, matchNot, panic, recover, removeMessageListener, removeParserListener, removeParserMatchListener, removeParserTokenListener, removeSemanticPredicateListener, removeSyntacticPredicateListener, removeTraceListener, reportError, reportError, reportWarning, rewind, setASTFactory, setASTNodeClass, setASTNodeType, setDebugMode, setFilename, setIgnoreInvalidDebugCalls, setInputState, setTokenBuffer, traceIndent

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

LLkParser

public LLkParser(int k_)

LLkParser

public LLkParser(ParserSharedInputState state,
                 int k_)

LLkParser

public LLkParser(TokenBuffer tokenBuf,
                 int k_)

LLkParser

public LLkParser(TokenStream lexer,
                 int k_)

Method Detail

consume

public void consume()
             throws TokenStreamException

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.

Specified by:

consume in class Parser

Throws:

TokenStreamException

LA

public int LA(int i)
       throws TokenStreamException

Description copied from class: Parser

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).

Specified by:

LA in class Parser

Throws:

TokenStreamException

LT

public Token LT(int i)
         throws TokenStreamException

Description copied from class: Parser

Return the ith token of lookahead

Specified by:

LT in class Parser

Throws:

TokenStreamException

traceIn

public void traceIn(String rname)
             throws TokenStreamException

Overrides:

traceIn in class Parser

Throws:

TokenStreamException

traceOut

public void traceOut(String rname)
              throws TokenStreamException

Overrides:

traceOut in class Parser

Throws:

TokenStreamException