com.googlecode.aviator.parser

Class ExpressionParser

java.lang.Object

com.googlecode.aviator.parser.ExpressionParser

All Implemented Interfaces:

Parser

public class ExpressionParser
extends Object
implements Parser

Syntex parser for expression

Author:

dennis

Field Summary

Fields

Modifier and Type	Field and Description
static CharToken	LEFT_PAREN
static CharToken	RIGHT_PAREN

Constructor Summary

Constructors

Constructor and Description
ExpressionParser(AviatorEvaluatorInstance instance, ExpressionLexer lexer, CodeGenerator codeGenerator)

Method Summary

Modifier and Type	Method and Description
void	and()
void	back()
void	bitAnd()
void	bitOr()
ScopeInfo	enterScope()
void	equality()
void	expr()
void	factor()
CodeGenerator	getCodeGenerator()
static boolean	isJavaIdentifier(String id) Test whether a given string is a valid Java identifier.
boolean	isOPVariable(Token<?> token)
void	join()
void	move(boolean analyse)
Expression	parse()
void	rel()
void	restoreScope(ScopeInfo info) (non-Javadoc)
void	setCodeGenerator(CodeGenerator codeGenerator)
void	shift()
void	term()
void	ternary()
void	unary()
void	xor()

Methods inherited from class java.lang.Object

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

Field Detail

LEFT_PAREN

public static final CharToken LEFT_PAREN

RIGHT_PAREN

public static final CharToken RIGHT_PAREN

Constructor Detail

ExpressionParser

public ExpressionParser(AviatorEvaluatorInstance instance,
                        ExpressionLexer lexer,
                        CodeGenerator codeGenerator)

Method Detail

getCodeGenerator

public CodeGenerator getCodeGenerator()

Specified by:

getCodeGenerator in interface Parser

setCodeGenerator

public void setCodeGenerator(CodeGenerator codeGenerator)

Specified by:

setCodeGenerator in interface Parser

enterScope

public ScopeInfo enterScope()

Specified by:

enterScope in interface Parser

restoreScope

public void restoreScope(ScopeInfo info)

(non-Javadoc)

Specified by:

restoreScope in interface Parser

See Also:

com.googlecode.aviator.parser.Parser#restoreScope(com.googlecode.aviator.parser.ExpressionParser.DepthInfo)

ternary

public void ternary()

join

public void join()

bitOr

public void bitOr()

xor

public void xor()

bitAnd

public void bitAnd()

and

public void and()

equality

public void equality()

rel

public void rel()

shift

public void shift()

expr

public void expr()

term

public void term()

unary

public void unary()

isOPVariable

public boolean isOPVariable(Token<?> token)

factor

public void factor()

isJavaIdentifier

public static final boolean isJavaIdentifier(String id)

Test whether a given string is a valid Java identifier.

Parameters:

id - string which should be checked

Returns:

true if a valid identifier

move

public void move(boolean analyse)

back

public void back()

parse

public Expression parse()