ExpressionParser (aviator 5.2.4 API)

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

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)

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

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`void`	`and()`
`void`	`back()`
`void`	`bitAnd()`
`void`	`bitOr()`
`ScopeInfo`	`enterScope(boolean inNewScope)`
`void`	`equality()`
`void`	`exponent()`
`void`	`expr()`
`void`	`factor()`
`CodeGenerator`	`getCodeGenerator()`
`Token<?>`	`getLookhead()`
`int`	`getParsedTokens()`
`Token<?>`	`getPrevToken()`
`SymbolTable`	`getSymbolTable()`
`static boolean`	`isConstant(Token<?> token, AviatorEvaluatorInstance instance)`
`static boolean`	`isJavaIdentifier(String id)` Test whether a given string is a valid Java identifier.
`static boolean`	`isLiteralToken(Token<?> token, AviatorEvaluatorInstance instance)`
`boolean`	`isOPVariable(Token<?> token)`
`void`	`join()`
`void`	`move(boolean analyse)`
`Expression`	`parse()`
`Expression`	`parse(boolean reportErrorIfNotEOF)`
`void`	`rel()`
`void`	`reportSyntaxError(String message)`
`void`	`restoreScope(ScopeInfo info)` (non-Javadoc)
`void`	`returnStatement()` Call __reducer_return(result)
`void`	`setCodeGenerator(CodeGenerator codeGenerator)`
`void`	`shift()`
`void`	`term()`
`boolean`	`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

getPrevToken
```
public Token<?> getPrevToken()
```

getCodeGenerator
```
public CodeGenerator getCodeGenerator()
```
Specified by:

getCodeGenerator in interface Parser

getLookhead
```
public Token<?> getLookhead()
```

getSymbolTable
```
public SymbolTable getSymbolTable()
```
Specified by:

getSymbolTable in interface Parser

setCodeGenerator
```
public void setCodeGenerator(CodeGenerator codeGenerator)
```
Specified by:

setCodeGenerator in interface Parser

enterScope

public ScopeInfo enterScope(boolean inNewScope)

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)

returnStatement
```
public void returnStatement()
```
Call __reducer_return(result)

ternary
```
public boolean 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()
```

exponent
```
public void exponent()
```

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

reportSyntaxError

public void reportSyntaxError(String message)

move
```
public void move(boolean analyse)
```

getParsedTokens
```
public int getParsedTokens()
```

back
```
public void back()
```

parse

public Expression parse(boolean reportErrorIfNotEOF)

parse
```
public Expression parse()
```

isConstant

public static boolean isConstant(Token<?> token,
                                 AviatorEvaluatorInstance instance)

isLiteralToken

public static boolean isLiteralToken(Token<?> token,
                                     AviatorEvaluatorInstance instance)

Class ExpressionParser

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

LEFT_PAREN

RIGHT_PAREN

Constructor Detail

ExpressionParser

Method Detail

getPrevToken

getCodeGenerator

getLookhead

getSymbolTable

setCodeGenerator

enterScope

restoreScope

returnStatement

ternary

join

bitOr

xor

bitAnd

and

equality

rel

shift

expr

exponent

term

unary

isOPVariable

factor

isJavaIdentifier

reportSyntaxError

move

getParsedTokens

back

parse

parse

isConstant

isLiteralToken