/******************************************************************************* | |
* 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.CodeStream; | |
import org.eclipse.wst.jsdt.internal.compiler.codegen.Label; | |
import org.eclipse.wst.jsdt.internal.compiler.impl.Constant; | |
import org.eclipse.wst.jsdt.internal.compiler.lookup.BlockScope; | |
import org.eclipse.wst.jsdt.internal.compiler.lookup.TypeBinding; | |
public class TrueLiteral extends MagicLiteral { | |
static final char[] source = {'t' , 'r' , 'u' , 'e'}; | |
public TrueLiteral(int s , int e) { | |
super(s,e); | |
} | |
public void computeConstant() { | |
constant = Constant.fromValue(true);} | |
/** | |
* Code generation for the true literal | |
* | |
* @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) { | |
int pc = codeStream.position; | |
if (valueRequired) | |
codeStream.iconst_1(); | |
codeStream.recordPositionsFrom(pc, this.sourceStart); | |
} | |
public void generateOptimizedBoolean(BlockScope currentScope, CodeStream codeStream, Label trueLabel, Label falseLabel, boolean valueRequired) { | |
// trueLabel being not nil means that we will not fall through into the TRUE case | |
int pc = codeStream.position; | |
// constant == true | |
if (valueRequired) { | |
if (falseLabel == null) { | |
// implicit falling through the FALSE case | |
if (trueLabel != null) { | |
codeStream.goto_(trueLabel); | |
} | |
} | |
} | |
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); | |
} | |
} |