| /******************************************************************************* |
| * 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.jdt.internal.compiler.ast; |
| |
| import org.eclipse.jdt.internal.compiler.ASTVisitor; |
| import org.eclipse.jdt.internal.compiler.impl.*; |
| import org.eclipse.jdt.internal.compiler.codegen.*; |
| import org.eclipse.jdt.internal.compiler.lookup.*; |
| |
| public class FalseLiteral extends MagicLiteral { |
| static final char[] source = {'f', 'a', 'l', 's', 'e'}; |
| public FalseLiteral(int s , int e) { |
| super(s,e); |
| } |
| public void computeConstant() { |
| constant = Constant.fromValue(false); |
| } |
| /** |
| * Code generation for false literal |
| * |
| * @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) { |
| int pc = codeStream.position; |
| if (valueRequired) { |
| codeStream.generateConstant(this.constant, this.implicitConversion); |
| } |
| codeStream.recordPositionsFrom(pc, this.sourceStart); |
| } |
| public void generateOptimizedBoolean(BlockScope currentScope, CodeStream codeStream, Label trueLabel, Label falseLabel, boolean valueRequired) { |
| |
| // falseLabel being not nil means that we will not fall through into the FALSE case |
| |
| int pc = codeStream.position; |
| if (valueRequired) { |
| if (falseLabel != null) { |
| // implicit falling through the TRUE case |
| if (trueLabel == null) { |
| codeStream.goto_(falseLabel); |
| } |
| } |
| } |
| codeStream.recordPositionsFrom(pc, this.sourceStart); |
| } |
| public TypeBinding literalType(BlockScope scope) { |
| return BooleanBinding; |
| } |
| /** |
| * |
| */ |
| public char[] source() { |
| return source; |
| } |
| public void traverse(ASTVisitor visitor, BlockScope scope) { |
| visitor.visit(this, scope); |
| visitor.endVisit(this, scope); |
| } |
| } |