Package snap.util

Class KeyChainParser

java.lang.Object

snap.parse.Parser

snap.util.KeyChainParser

public class KeyChainParser
extends Parser

A Parser subclass to parse strings to KeyChains.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	KeyChainParser.AdditiveExprHandler	AdditiveExpr Handler: AdditiveExpr { MultiplicativeExpr (("+" | "-") MultiplicativeExpr)* }
static class	KeyChainParser.ArgListHandler	ArgList Handler: ArgList { Expression ("," Expression)* }
static class	KeyChainParser.BinaryExprHandler	BinaryExpr Handler.
static class	KeyChainParser.ComparativeExprHandler	ComparativeExpr Handler: ComparativeExpr { AdditiveExpr ((">" | "<" | ">=" | "<=") AdditiveExpr)* }
static class	KeyChainParser.EqualityExprHandler	EqualityExpr Handler: EqualityExpr { ComparativeExpr (("==" | "!=") ComparativeExpr)* }
static class	KeyChainParser.ExpressionHandler	Expression Handler: Expression { LogicalOrExpr (LookAhead(2) "?" Expression (LookAhead(2) ":" Expression)?)? }
static class	KeyChainParser.KeyChainHandler	KeyChain Handler: KeyChain { Object ("." Object)* }
static class	KeyChainParser.LogicalAndExprHandler	LogicalAndExpr Handler: LogicalAndExpr { EqualityExpr ("&&" EqualityExpr)* }
static class	KeyChainParser.LogicalOrExprHandler	LogicalOrExpr Handler: LogicalOrExpr { LogicalAndExpr ("||" LogicalAndExpr)* }
static class	KeyChainParser.MultiplicativeExprHandler	MultiplicativeExpr Handler: MultiplicativeExpr { UnaryExpr (("*" | "/" | "%") UnaryExpr)* }
static class	KeyChainParser.ObjectHandler	Object Handler: LookAhead(3) KEY "(" ArgList? ")" | LookAhead(2) KEY "[" Expression "]" | LookAhead(3) KEY | INT | FLOAT | STRING | "(" Expression ")"
static class	KeyChainParser.StatementHandler	Statement Handler: Statement { LookAhead(2) KEY ("=" | "+=") Expression | Expression }
static class	KeyChainParser.UnaryExprHandler	UnaryExpr Handler: UnaryExpr { "-" KeyChain | "!" KeyChain | KeyChain }

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

Parser.HandlerRef

Constructor Summary

Constructors

Constructor	Description
KeyChainParser()

Method Summary

Modifier and Type	Method	Description
String	getAndResetError()	Returns the error from last KeyChain parse and clears error.
String	getError()	Returns the error from last key chain parse.
protected void	initGrammar()	Load rule from rule file and install handlers.
KeyChain	keyChain(String aString)	Returns a KeyChain for given string.

Methods inherited from class snap.parse.Parser

clearTokens, createGrammar, createNode, createTokenizer, getCharIndex, getGrammar, getInput, getLastProcessedToken, getLastValidToken, getLookAheadToken, getNextToken, getPrimaryRule, getRuleForName, getToken, getTokenizer, lookAhead, parse, parse, parse, parse, parseCustom, parseCustom, parseFailed, setCharIndex, setInput, setTokenizer

Methods inherited from class java.lang.Object

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

Constructor Details

KeyChainParser

public KeyChainParser()

Method Details

keyChain

public KeyChain keyChain(String aString)

Returns a KeyChain for given string.

getError

public String getError()

Returns the error from last key chain parse.

getAndResetError

public String getAndResetError()

Returns the error from last KeyChain parse and clears error.

initGrammar

protected void initGrammar()

Load rule from rule file and install handlers.

Overrides:

initGrammar in class Parser