org.jacorb.notification.filter.etcl

Class EqOperator

java.lang.Object

antlr.BaseAST

org.jacorb.notification.filter.etcl.AbstractTCLNode

org.jacorb.notification.filter.etcl.BinaryOperator

org.jacorb.notification.filter.etcl.EqOperator

All Implemented Interfaces:

antlr.collections.AST, Serializable, TCLParserTokenTypes

public class EqOperator
extends BinaryOperator

A simple node to represent EQ operation

See Also:

Serialized Form

Field Summary

Fields inherited from class antlr.BaseAST

down, right

Fields inherited from interface org.jacorb.notification.filter.etcl.TCLParserTokenTypes

AND, ARRAY, ASSOC, DEFAULT, DISCRIM, DIV, DOLLAR, DOT, EOF, EQ, EXIST, FALSE, FIRST, GT, GTE, IDENTIFIER, IMPLICIT, IN, LBRACKET, LENGTH, LPAREN, LT, LTE, MAX, MIN, MINUS, MULT, NEQ, NOT, NULL_TREE_LOOKAHEAD, NUM_FLOAT, NUMBER, OR, PLUS, RANDOM, RBRACKET, REPO_ID, RPAREN, RUNTIME_VAR, STRING, SUBSTR, TRUE, TYPE, TYPE_ID, UNARY_MINUS, UNARY_PLUS, UNION_POS, WITH, WS

Constructor Summary

Constructors

Constructor and Description
EqOperator(antlr.Token tok)

Method Summary

Methods

Modifier and Type	Method and Description
EvaluationResult	evaluate(EvaluationContext context) Evaluate this Node.
EvaluationResult	evaluate(EvaluationContext context, EvaluationResult left, EvaluationResult rightVal)
String	toString()
protected void	visitThis(AbstractTCLVisitor visitor)

Methods inherited from class org.jacorb.notification.filter.etcl.BinaryOperator

acceptInOrder, acceptPostOrder, acceptPreOrder, evaluate

Methods inherited from class org.jacorb.notification.filter.etcl.AbstractTCLNode

getName, getNameForType, getType, hasNextSibling, initialize, initialize, initialize, isBoolean, isNumber, isStatic, isString, left, printToStringBuffer, right, setType, toStringTree

Methods inherited from class antlr.BaseAST

addChild, decode, encode, equals, equalsList, equalsListPartial, equalsTree, equalsTreePartial, findAll, findAllPartial, getFirstChild, getNextSibling, getNumberOfChildren, getText, removeChildren, setFirstChild, setNextSibling, setText, setVerboseStringConversion, toStringList, xmlSerialize, xmlSerializeNode, xmlSerializeRootClose, xmlSerializeRootOpen

Methods inherited from class java.lang.Object

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

Constructor Detail

EqOperator

public EqOperator(antlr.Token tok)

Method Detail

evaluate

public EvaluationResult evaluate(EvaluationContext context,
                        EvaluationResult left,
                        EvaluationResult rightVal)
                          throws EvaluationException

Specified by:

evaluate in class BinaryOperator

Throws:

EvaluationException

toString

public String toString()

Specified by:

toString in interface antlr.collections.AST

Overrides:

toString in class antlr.BaseAST

visitThis

protected void visitThis(AbstractTCLVisitor visitor)
                  throws VisitorException

Specified by:

visitThis in class BinaryOperator

Throws:

VisitorException

evaluate

public final EvaluationResult evaluate(EvaluationContext context)
                                throws EvaluationException

Description copied from class: AbstractTCLNode

Evaluate this Node.

Overrides:

evaluate in class AbstractTCLNode

Parameters:

context - an EvaluationContext value contains all context information necessary for the evaluation

Returns:

an EvaluationResult value

Throws:

EvaluationException - occurs if e.g. an expression contains a reference to a non-existent struct member or if it is tried to add a string and a number