| /******************************************************************************* |
| * 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); |
| } |
| } |