edu.mit.ai.psg.jeva
Class JNEEqualityExpression

java.lang.Object
  |
  +--edu.mit.ai.psg.jeva.SimpleNode
        |
        +--edu.mit.ai.psg.jeva.JevaNode
              |
              +--edu.mit.ai.psg.jeva.ExpressionNode
                    |
                    +--edu.mit.ai.psg.jeva.LeftAssociativeOperatorExpression
                          |
                          +--edu.mit.ai.psg.jeva.JNEEqualityExpression

public class JNEEqualityExpression

extends LeftAssociativeOperatorExpression

implements JevaParserConstants

Jeva parse Node for == and != Expressions [JavaLangSpec 1.0 sec 15.20 Equality Operators].

Author:

CarlManning, caroma@ai.mit.edu
Copyright (c) 1997, 1998 Massachusetts Institute of Technology

Fields inherited from class edu.mit.ai.psg.jeva.SimpleNode

children, id, parent

Method Summary

Object	binaryCombine(Token operator, Object accumResult, Object nextResult) [JavaLangSpec 1.0 sec 15.20 Equality Operators]
IClass	binaryCombineTypes(Token operator, IClass leftType, IClass rightType) operands must either both be numeric, both be boolean, or both be references or null [JavaLangSpec 1.0 sec 15.20]
Object	jjtAccept(IJevaVisitor visitor, Object data)

Methods inherited from class edu.mit.ai.psg.jeva.LeftAssociativeOperatorExpression

computeIsConstant, computeType, eval

Methods inherited from class edu.mit.ai.psg.jeva.ExpressionNode

getType, getType, getValue, isConstant

Methods inherited from class edu.mit.ai.psg.jeva.JevaNode

checkInsertionPoint, find2ndTokenBeforeEndBody, findChildIndex, findPrecedingToken, findTokenBeforeChild, findTokenBeforeChild, findTokenBeforeEnd, getBeginToken, getEndToken, insertChildTokens, insertNewChildAfter, insertNewChildAt, insertNewChildBefore, jnGetChild, jnGetParent, print, print, printToken, printToString, printToString, removeChild, removeChildTokens, replaceChild, replaceChild, setBeginToken, setEndToken, updateEndTokens, updateEndTokensPriorChild, updateEndTokensPriorNode, updateEndTokensPriorNode

Methods inherited from class edu.mit.ai.psg.jeva.SimpleNode

dump, jjtAddChild, jjtClose, jjtGetChild, jjtGetNumChildren, jjtGetParent, jjtOpen, jjtSetParent, toString, toString

Methods inherited from class java.lang.Object

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

Method Detail

jjtAccept

public Object jjtAccept(IJevaVisitor visitor,
                        Object data)

Overrides:

jjtAccept in class JevaNode

binaryCombineTypes

public IClass binaryCombineTypes(Token operator,
                                 IClass leftType,
                                 IClass rightType)

operands must either both be numeric, both be boolean, or both be references or null [JavaLangSpec 1.0 sec 15.20]

Overrides:

binaryCombineTypes in class LeftAssociativeOperatorExpression

binaryCombine

public Object binaryCombine(Token operator,
                            Object accumResult,
                            Object nextResult)
                     throws ThrowException

[JavaLangSpec 1.0 sec 15.20 Equality Operators]

Overrides:

binaryCombine in class LeftAssociativeOperatorExpression