at.dms.compiler.antlr.runtime
Class Parser

java.lang.Object
  at.dms.compiler.antlr.runtime.Parser

Direct Known Subclasses:

LLkParser

public abstract class Parser
extends Object

Field Summary

protected ParserSharedInputState	inputState
protected String[]	tokenNames Table of token type to token names

Constructor Summary

Parser()

Parser(ParserSharedInputState state)

Method Summary

abstract void	consume() Get another token object from the token stream
void	consumeUntil(BitSet set) Consume tokens until one matches the given token set
void	consumeUntil(int tokenType) Consume tokens until one matches the given token
protected void	defaultDebuggingSetup(TokenStream lexer, TokenBuffer tokBuf)
String	getFilename()
ParserSharedInputState	getInputState()
String	getTokenName(int num)
String[]	getTokenNames()
abstract 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).
abstract Token	LT(int i) Return the ith token of lookahead
int	mark()
void	match(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.
void	match(int t) Make sure current lookahead symbol matches token type t.
void	matchNot(int t)
static void	panic()
void	reportError(RecognitionException ex) Parser error-reporting function can be overridden in subclass
void	reportError(String s) Parser error-reporting function can be overridden in subclass
void	reportWarning(String s) Parser warning-reporting function can be overridden in subclass
void	rewind(int pos)
void	setFilename(String f)
void	setInputState(ParserSharedInputState state)
void	setTokenBuffer(TokenBuffer t) Set or change the input token buffer

Methods inherited from class java.lang.Object

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

Field Detail

inputState

protected ParserSharedInputState inputState

tokenNames

protected String[] tokenNames

Table of token type to token names

Constructor Detail

Parser

public Parser()

Parser

public Parser(ParserSharedInputState state)

Method Detail

consume

public abstract void consume()
                      throws TokenStreamException

Get another token object from the token stream

Throws:

TokenStreamException

consumeUntil

public void consumeUntil(int tokenType)
                  throws TokenStreamException

Consume tokens until one matches the given token

Throws:

TokenStreamException

consumeUntil

public void consumeUntil(BitSet set)
                  throws TokenStreamException

Consume tokens until one matches the given token set

Throws:

TokenStreamException

defaultDebuggingSetup

protected void defaultDebuggingSetup(TokenStream lexer,
                                     TokenBuffer tokBuf)

getFilename

public String getFilename()

getInputState

public ParserSharedInputState getInputState()

setInputState

public void setInputState(ParserSharedInputState state)

getTokenName

public String getTokenName(int num)

getTokenNames

public String[] getTokenNames()

LA

public abstract int LA(int i)
                throws TokenStreamException

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).

Throws:

TokenStreamException

LT

public abstract Token LT(int i)
                  throws TokenStreamException

Return the ith token of lookahead

Throws:

TokenStreamException

mark

public int mark()

match

public void match(int t)
           throws MismatchedTokenException,
                  TokenStreamException

Make sure current lookahead symbol matches token type t. Throw an exception upon mismatch, which is catch by either the error handler or by the syntactic predicate.

Throws:

MismatchedTokenException

TokenStreamException

match

public void match(BitSet b)
           throws MismatchedTokenException,
                  TokenStreamException

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.

Throws:

MismatchedTokenException

TokenStreamException

matchNot

public void matchNot(int t)
              throws MismatchedTokenException,
                     TokenStreamException

Throws:

MismatchedTokenException

TokenStreamException

panic

public static void panic()

reportError

public void reportError(RecognitionException ex)

Parser error-reporting function can be overridden in subclass

reportError

public void reportError(String s)

Parser error-reporting function can be overridden in subclass

reportWarning

public void reportWarning(String s)

Parser warning-reporting function can be overridden in subclass

rewind

public void rewind(int pos)

setFilename

public void setFilename(String f)

setTokenBuffer

public void setTokenBuffer(TokenBuffer t)

Set or change the input token buffer