removed Makefile; lifted repo/org.ibex.tool/src/ to src/
[org.ibex.tool.git] / src / org / eclipse / jdt / internal / compiler / ast / FalseLiteral.java
1 /*******************************************************************************
2  * Copyright (c) 2000, 2004 IBM Corporation and others.
3  * All rights reserved. This program and the accompanying materials 
4  * are made available under the terms of the Common Public License v1.0
5  * which accompanies this distribution, and is available at
6  * http://www.eclipse.org/legal/cpl-v10.html
7  * 
8  * Contributors:
9  *     IBM Corporation - initial API and implementation
10  *******************************************************************************/
11 package org.eclipse.jdt.internal.compiler.ast;
12
13 import org.eclipse.jdt.internal.compiler.ASTVisitor;
14 import org.eclipse.jdt.internal.compiler.impl.*;
15 import org.eclipse.jdt.internal.compiler.codegen.*;
16 import org.eclipse.jdt.internal.compiler.lookup.*;
17
18 public class FalseLiteral extends MagicLiteral {
19         static final char[] source = {'f', 'a', 'l', 's', 'e'};
20 public FalseLiteral(int s , int e) {
21         super(s,e);
22 }
23 public void computeConstant() {
24
25         constant = Constant.fromValue(false);}
26 /**
27  * Code generation for false literal
28  *
29  * @param currentScope org.eclipse.jdt.internal.compiler.lookup.BlockScope
30  * @param codeStream org.eclipse.jdt.internal.compiler.codegen.CodeStream
31  * @param valueRequired boolean
32  */
33 public void generateCode(BlockScope currentScope, CodeStream codeStream, boolean valueRequired) {
34         int pc = codeStream.position;
35         if (valueRequired)
36                 codeStream.iconst_0();
37         codeStream.recordPositionsFrom(pc, this.sourceStart);
38 }
39 public void generateOptimizedBoolean(BlockScope currentScope, CodeStream codeStream, Label trueLabel, Label falseLabel, boolean valueRequired) {
40
41         // falseLabel being not nil means that we will not fall through into the FALSE case
42
43         int pc = codeStream.position;
44         if (valueRequired) {
45                 if (falseLabel != null) {
46                         // implicit falling through the TRUE case
47                         if (trueLabel == null) {
48                                 codeStream.goto_(falseLabel);
49                         }
50                 }
51         }
52         codeStream.recordPositionsFrom(pc, this.sourceStart);
53 }
54 public TypeBinding literalType(BlockScope scope) {
55         return BooleanBinding;
56 }
57 /**
58  * 
59  */
60 public char[] source() {
61         return source;
62 }
63 public void traverse(ASTVisitor visitor, BlockScope scope) {
64         visitor.visit(this, scope);
65         visitor.endVisit(this, scope);
66 }
67 }