Package gw.internal.gosu.parser.expressions

Class EqualityExpression

java.lang.Object

gw.internal.gosu.parser.ParsedElement

gw.internal.gosu.parser.Expression

gw.internal.gosu.parser.expressions.BinaryExpression

gw.internal.gosu.parser.expressions.ConditionalExpression

gw.internal.gosu.parser.expressions.EqualityExpression

All Implemented Interfaces:

IBinaryExpression, IConditionalExpression, IEqualityExpression, IOverridableOperation, IExpression, IHasType, IParsedElement

public class EqualityExpression
extends ConditionalExpression
implements IEqualityExpression

Represents an equality expression in the Gosu grammar:

 equality-expression
   <relational-expression>
   <equality-expression> == <relational-expression>
   <equality-expression> != <relational-expression>
   <equality-expression> <> <relational-expression>
 

See Also:

IGosuParser

Field Summary

Fields

Modifier and Type	Field	Description
protected boolean	_bEquals	Is this an equals or a not-equals?

Fields inherited from class gw.internal.gosu.parser.Expression

_type

Fields inherited from class gw.internal.gosu.parser.ParsedElement

_tokens, UNDEF_FILE, UNDEF_FUNCTION, UNDEF_MODULE

Fields inherited from interface gw.lang.parser.IExpression

EMPTY_ARRAY

Constructor Summary

Constructors

Constructor	Description
EqualityExpression()

Method Summary

Modifier and Type	Method	Description
java.lang.Object	evaluate()	Evaluates this Expression and returns the result.
boolean	isEquals()
void	setEquals(boolean bEquals)
java.lang.String	toString()	Subclasses should return a String representing the parsed expression.

Methods inherited from class gw.internal.gosu.parser.expressions.ConditionalExpression

compareNumbers, getOverride, getType, getTypeImpl, isCompileTimeConstant, setOverride

Methods inherited from class gw.internal.gosu.parser.expressions.BinaryExpression

getLHS, getOperator, getRHS, setLHS, setOperator, setRHS

Methods inherited from class gw.internal.gosu.parser.Expression

evaluate, getContextType, getReturnType, isNullSafe, isUnchecked, setType

Methods inherited from class gw.internal.gosu.parser.ParsedElement

addExceptionsFrom, addParseException, addParseException, addParseException, addParseExceptions, addParseIssues, addParseWarning, addParseWarning, addParseWarnings, addToken, adjustColumn, adjustLineNum, assignTokens, clearParseExceptions, clearParseTreeInformation, clearParseWarnings, compactParseTree, findAncestorParsedElementByType, findDeclaringStatement, findLineNumberOfDeclaration, findRootParsedElement, getAnnotations, getColumn, getContainedParsedElementsByType, getContainedParsedElementsByTypes, getContainedParsedElementsByTypesWithIgnoreSet, getEnclosingFeatureInfo, getFunctionName, getGosuClass, getGosuProgram, getImmediateParseIssue, getImmediateParseIssues, getLineNum, getLocation, getModule, getParent, getParseExceptions, getParseIssues, getParseWarnings, getQualifyingEnclosingTypeInfo, getTokens, hasImmediateParseIssue, hasImmediateParseWarning, hasImmediateParseWarnings, hasParseException, hasParseExceptions, hasParseIssue, hasParseIssues, hasParseWarning, hasParseWarnings, initEmptyParseTree, initLocation, isSuppressed, isSuppressed, isSynthetic, makeDoubleValue, makeFloatValue, makeInteger, makeLong, removeParseException, removeParseWarning, removeParseWarningRecursively, setGosuProgram, setLineNum, setLocation, setParent, setSynthetic, shouldClearParseInfo, visit

Methods inherited from class java.lang.Object

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

Methods inherited from interface gw.lang.parser.expressions.IConditionalExpression

getLHS, getRHS

Methods inherited from interface gw.lang.parser.IExpression

evaluate, getContextType, isNullSafe, isUnchecked

Methods inherited from interface gw.lang.parser.IHasType

getType

Methods inherited from interface gw.lang.parser.expressions.IOverridableOperation

getOverride, setOverride

Methods inherited from interface gw.lang.parser.IParsedElement

addExceptionsFrom, addParseException, addParseException, addParseWarning, addParseWarning, clearParseExceptions, clearParseTreeInformation, clearParseWarnings, findAncestorParsedElementByType, findDeclaringStatement, findRootParsedElement, getColumn, getContainedParsedElementsByType, getContainedParsedElementsByTypes, getContainedParsedElementsByTypesWithIgnoreSet, getFunctionName, getGosuClass, getGosuProgram, getImmediateParseIssue, getImmediateParseIssues, getLineNum, getLocation, getModule, getParent, getParseExceptions, getParseIssues, getParseWarnings, getReturnType, getTokens, hasImmediateParseIssue, hasImmediateParseWarnings, hasParseException, hasParseExceptions, hasParseIssue, hasParseIssues, hasParseWarning, hasParseWarnings, isCompileTimeConstant, isSuppressed, isSynthetic, setLocation, setParent, visit

Field Detail

_bEquals

protected boolean _bEquals

Is this an equals or a not-equals?

Constructor Detail

EqualityExpression

public EqualityExpression()

Method Detail

isEquals

public boolean isEquals()

Specified by:

isEquals in interface IEqualityExpression

Returns:

True if this is an equals expression (as apposed to not-eqauls).

setEquals

public void setEquals(boolean bEquals)

Parameters:

bEquals - True if this is an equals expression (as apposed to not-eqauls).

evaluate

public java.lang.Object evaluate()

Description copied from interface: IExpression

Evaluates this Expression and returns the result.

Specified by:

evaluate in interface IExpression

Overrides:

evaluate in class Expression

toString

public java.lang.String toString()

Description copied from class: Expression

Subclasses should return a String representing the parsed expression.

Overrides:

toString in class BinaryExpression