Package snap.parse

Class ParseRuleParser

java.lang.Object

snap.parse.Parser

snap.parse.ParseRuleParser

public class ParseRuleParser
extends Parser

A Parser to parse simple snap grammar rule files.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	ParseRuleParser.AndExprHandler	AndExpr Handler: { CountExpr CountExpr* }
static class	ParseRuleParser.CountExprHandler	CountExpr Handler: { Expression ( "*" "+" "?" )? }
static class	ParseRuleParser.ExpressionHandler	Expression Handler: { String | "LookAhead" "(" (Number | OrExpr) ")" | Name | "(" OrExpr ")" }
static class	ParseRuleParser.OrExprHandler	OrExpr Handler: { AndExpr ( "|" AndExpr )* }
static class	ParseRuleParser.ParseRuleFileHandler	ParseRuleFile Handler: { ParseRule* }
static class	ParseRuleParser.ParseRuleHandler	ParseRule Handler: { Name "{" OrExpr "}" }

Nested classes/interfaces inherited from class snap.parse.Parser

Parser.HandlerRef

Constructor Summary

Constructors

Constructor	Description
ParseRuleParser()

Method Summary

Modifier and Type	Method	Description
ParseRule	createRule()	Creates a new ParseRule rule.
protected Tokenizer	createTokenizer()	Override to allow rules files to have standard Java single/multiple line comments.

Methods inherited from class snap.parse.Parser

charAt, clearTokens, createNode, eatChar, getChar, getCharIndex, getInput, getLookAheadToken, getNextToken, getRule, getRule, getToken, getTokenizer, initRule, length, lookAhead, parse, parse, parse, parse, parseCustom, parseCustom, parseCustom, parseFailed, setCharIndex, setInput, setRule, setTokenizer

Methods inherited from class java.lang.Object

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

Constructor Details

ParseRuleParser

public ParseRuleParser()

Method Details

createRule

public ParseRule createRule()

Creates a new ParseRule rule.

Overrides:

createRule in class Parser

createTokenizer

protected Tokenizer createTokenizer()

Override to allow rules files to have standard Java single/multiple line comments.

Overrides:

createTokenizer in class Parser