/******************************************************************************* | |
* Copyright (c) 2000, 2004 IBM Corporation and others. | |
* All rights reserved. This program and the accompanying materials | |
* are made available under the terms of the Common Public License v1.0 | |
* which accompanies this distribution, and is available at | |
* http://www.eclipse.org/legal/cpl-v10.html | |
* | |
* Contributors: | |
* IBM Corporation - initial API and implementation | |
*******************************************************************************/ | |
package org.eclipse.wst.jsdt.internal.compiler.ast; | |
import org.eclipse.wst.jsdt.internal.compiler.ASTVisitor; | |
import org.eclipse.wst.jsdt.internal.compiler.codegen.*; | |
import org.eclipse.wst.jsdt.internal.compiler.lookup.*; | |
public class PostfixExpression extends CompoundAssignment { | |
public PostfixExpression(Expression l, Expression e, int op, int pos) { | |
super(l, e, op, pos); | |
this.sourceStart = l.sourceStart; | |
this.sourceEnd = pos; | |
} | |
/** | |
* Code generation for PostfixExpression | |
* | |
* @param currentScope org.eclipse.wst.jsdt.internal.compiler.lookup.BlockScope | |
* @param codeStream org.eclipse.wst.jsdt.internal.compiler.codegen.CodeStream | |
* @param valueRequired boolean | |
*/ | |
public void generateCode( | |
BlockScope currentScope, | |
CodeStream codeStream, | |
boolean valueRequired) { | |
// various scenarii are possible, setting an array reference, | |
// a field reference, a blank final field reference, a field of an enclosing instance or | |
// just a local variable. | |
int pc = codeStream.position; | |
((Reference) lhs).generatePostIncrement(currentScope, codeStream, this, valueRequired); | |
if (valueRequired) { | |
codeStream.generateImplicitConversion(implicitConversion); | |
} | |
codeStream.recordPositionsFrom(pc, this.sourceStart); | |
} | |
public String operatorToString() { | |
switch (operator) { | |
case PLUS : | |
return "++"; //$NON-NLS-1$ | |
case MINUS : | |
return "--"; //$NON-NLS-1$ | |
} | |
return "unknown operator"; //$NON-NLS-1$ | |
} | |
public StringBuffer printExpressionNoParenthesis(int indent, StringBuffer output) { | |
return lhs.printExpression(indent, output).append(' ').append(operatorToString()); | |
} | |
public boolean restrainUsageToNumericTypes() { | |
return true; | |
} | |
public void traverse(ASTVisitor visitor, BlockScope scope) { | |
if (visitor.visit(this, scope)) { | |
lhs.traverse(visitor, scope); | |
} | |
visitor.endVisit(this, scope); | |
} | |
} |