org.eclipse.jdt.internal.compiler.ast.PostfixExpression Maven / Gradle / Ivy
/*******************************************************************************
* Copyright (c) 2000, 2009 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.jdt.internal.compiler.ast;
import org.eclipse.jdt.internal.compiler.ASTVisitor;
import org.eclipse.jdt.internal.compiler.codegen.*;
import org.eclipse.jdt.internal.compiler.lookup.*;
public class PostfixExpression extends CompoundAssignment {
public PostfixExpression(Expression lhs, Expression expression, int operator, int pos) {
super(lhs, expression, operator, pos);
this.sourceStart = lhs.sourceStart;
this.sourceEnd = pos;
}
public boolean checkCastCompatibility() {
return false;
}
/**
* Code generation for PostfixExpression
*
* @param currentScope org.eclipse.jdt.internal.compiler.lookup.BlockScope
* @param codeStream org.eclipse.jdt.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) this.lhs).generatePostIncrement(currentScope, codeStream, this, valueRequired);
if (valueRequired) {
codeStream.generateImplicitConversion(this.implicitConversion);
}
codeStream.recordPositionsFrom(pc, this.sourceStart);
}
public String operatorToString() {
switch (this.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 this.lhs.printExpression(indent, output).append(' ').append(operatorToString());
}
public boolean restrainUsageToNumericTypes() {
return true;
}
public void traverse(ASTVisitor visitor, BlockScope scope) {
if (visitor.visit(this, scope)) {
this.lhs.traverse(visitor, scope);
}
visitor.endVisit(this, scope);
}
}