edu.mit.ai.psg.jevaES
Class JNEInstanceOfExpression

java.lang.Object
  |
  +--edu.mit.ai.psg.jevaES.SimpleNode
        |
        +--edu.mit.ai.psg.jevaES.JevaNode
              |
              +--edu.mit.ai.psg.jevaES.ExpressionNode
                    |
                    +--edu.mit.ai.psg.jevaES.JNEInstanceOfExpression

public class JNEInstanceOfExpression

extends ExpressionNode

Jeva parse Node for Expr instanceof Class [JavaLangSpec1.0 sec15.19.2 Type Comparison Operator instanceof]

Author:

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

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

children, id, parent

Method Summary

boolean	computeIsConstant(IEnv env)
Class	computeType(IEnv env) checks for legal subexpression and class types [JLS1.0sec15.19.2]
Object	eval(IEnv env) [JavaLangSpec1.0 sec15.19.2 Type Comparison Operator instanceof]
IExpressionNode	getExpressionNode()
JNType	getTypeNode()

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

getType, getValue, isConstant

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

getBeginToken, getEndToken, print, print, printToken, printToString, printToString, setBeginToken, setEndToken

Methods inherited from class edu.mit.ai.psg.jevaES.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

getExpressionNode

public IExpressionNode getExpressionNode()

getTypeNode

public JNType getTypeNode()

computeType

public Class computeType(IEnv env)
                  throws VerifyingException

checks for legal subexpression and class types [JLS1.0sec15.19.2]

Overrides:

computeType in class ExpressionNode

computeIsConstant

public boolean computeIsConstant(IEnv env)
                          throws VerifyingException

Overrides:

computeIsConstant in class ExpressionNode

eval

public Object eval(IEnv env)
            throws ThrowException

[JavaLangSpec1.0 sec15.19.2 Type Comparison Operator instanceof]

Overrides:

eval in class ExpressionNode