net.hydromatic.clapham.parser.bnf
Class BnfParser

java.lang.Object
  net.hydromatic.clapham.parser.bnf.BnfParser

All Implemented Interfaces:

BnfParserConstants

public class BnfParser
extends Object
implements BnfParserConstants

Parser for grammars in Backus-Naur Form (BNF) notation.

The supported grammar is Backus-Naur Form, extended with '*' (closure operator), '+' (mandatory repetition), but is not the grammar officially known as 'Extended Backus-Naur Form' (EBNF).

Author:

Julian Hyde

Field Summary

Token	jj_nt
boolean	lookingAhead
Token	token
BnfParserTokenManager	token_source

Fields inherited from interface net.hydromatic.clapham.parser.bnf.BnfParserConstants

ASTERISK, BAR, BRACKETED_IDENTIFIER, COLCOLEQ, DEFAULT, DIGIT, EOF, HOOK, IDENTIFIER, IN_MULTI_LINE_COMMENT, IN_SINGLE_LINE_COMMENT, LETTER, LITERAL, LPAREN, MULTI_LINE_COMMENT, PLUS, QUOT, RPAREN, SINGLE_LINE_COMMENT, tokenImage

Constructor Summary

BnfParser(BnfParserTokenManager tm)

BnfParser(InputStream stream)

BnfParser(InputStream stream, String encoding)

BnfParser(Reader stream)

Method Summary

void	disable_tracing()
void	enable_tracing()
EbnfNode	Expression()
EbnfNode	Factor()
EbnfNode	Factor2()
EbnfNode	Factor3()
ParseException	generateParseException()
Token	getNextToken()
Token	getToken(int index)
IdentifierNode	Identifier()
LiteralNode	Literal()
ProductionNode	Production()
void	ReInit(BnfParserTokenManager tm)
void	ReInit(InputStream stream)
void	ReInit(InputStream stream, String encoding)
void	ReInit(Reader stream)
List<ProductionNode>	Syntax() Syntactical Descriptions *
EbnfNode	Term()
static <E extends EbnfNode> void	toString(StringBuilder buf, String start, List<E> list, String end)

Methods inherited from class java.lang.Object

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

Field Detail

token_source

public BnfParserTokenManager token_source

token

public Token token

jj_nt

public Token jj_nt

lookingAhead

public boolean lookingAhead

Constructor Detail

BnfParser

public BnfParser(InputStream stream)

BnfParser

public BnfParser(InputStream stream,
                 String encoding)

BnfParser

public BnfParser(Reader stream)

BnfParser

public BnfParser(BnfParserTokenManager tm)

Method Detail

toString

public static <E extends EbnfNode> void toString(StringBuilder buf,
                                                 String start,
                                                 List<E> list,
                                                 String end)

Syntax

public final List<ProductionNode> Syntax()
                                  throws ParseException

Syntactical Descriptions *

Throws:

ParseException

Production

public final ProductionNode Production()
                                throws ParseException

Throws:

ParseException

Expression

public final EbnfNode Expression()
                          throws ParseException

Throws:

ParseException

Term

public final EbnfNode Term()
                    throws ParseException

Throws:

ParseException

Factor

public final EbnfNode Factor()
                      throws ParseException

Throws:

ParseException

Factor2

public final EbnfNode Factor2()
                       throws ParseException

Throws:

ParseException

Factor3

public final EbnfNode Factor3()
                       throws ParseException

Throws:

ParseException

Identifier

public final IdentifierNode Identifier()
                                throws ParseException

Throws:

ParseException

Literal

public final LiteralNode Literal()
                          throws ParseException

Throws:

ParseException

ReInit

public void ReInit(InputStream stream)

ReInit

public void ReInit(InputStream stream,
                   String encoding)

ReInit

public void ReInit(Reader stream)

ReInit

public void ReInit(BnfParserTokenManager tm)

getNextToken

public final Token getNextToken()

getToken

public final Token getToken(int index)

generateParseException

public ParseException generateParseException()

enable_tracing

public final void enable_tracing()

disable_tracing

public final void disable_tracing()