net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/compiler/ast/TrueLiteral.java

   1 /*******************************************************************************
   2  * Copyright (c) 2000, 2003 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 net.sourceforge.phpdt.internal.compiler.ast;
  12
  13 import net.sourceforge.phpdt.internal.compiler.IAbstractSyntaxTreeVisitor;
  14 import net.sourceforge.phpdt.internal.compiler.impl.Constant;
  15 import net.sourceforge.phpdt.internal.compiler.lookup.BlockScope;
  16 import net.sourceforge.phpdt.internal.compiler.lookup.TypeBinding;
  17
  18
  19 public class TrueLiteral extends MagicLiteral {
  20         static final char[] source = {'t' , 'r' , 'u' , 'e'};
  21 public TrueLiteral(int s , int e) {
  22         super(s,e);
  23 }
  24 public void computeConstant() {
  25
  26         constant = Constant.fromValue(true);}
  27 /**
  28  * Code generation for the true literal
  29  *
  30  * @param currentScope net.sourceforge.phpdt.internal.compiler.lookup.BlockScope
  31  * @param codeStream net.sourceforge.phpdt.internal.compiler.codegen.CodeStream
  32  * @param valueRequired boolean
  33  */
  34 //public void generateCode(BlockScope currentScope, CodeStream codeStream, boolean valueRequired) {
  35 //      int pc = codeStream.position;
  36 //      if (valueRequired)
  37 //              codeStream.iconst_1();
  38 //      codeStream.recordPositionsFrom(pc, this.sourceStart);
  39 //}
  40 //public void generateOptimizedBoolean(BlockScope currentScope, CodeStream codeStream, Label trueLabel, Label falseLabel, boolean valueRequired) {
  41 //
  42 //      // trueLabel being not nil means that we will not fall through into the TRUE case
  43 //
  44 //      int pc = codeStream.position;
  45 //      // constant == true
  46 //      if (valueRequired) {
  47 //              if (falseLabel == null) {
  48 //                      // implicit falling through the FALSE case
  49 //                      if (trueLabel != null) {
  50 //                              codeStream.goto_(trueLabel);
  51 //                      }
  52 //              }
  53 //      }
  54 //      codeStream.recordPositionsFrom(pc, this.sourceStart);
  55 //}
  56 public TypeBinding literalType(BlockScope scope) {
  57         return BooleanBinding;
  58 }
  59 /**
  60  *
  61  */
  62 public char[] source() {
  63         return source;
  64 }
  65 public void traverse(IAbstractSyntaxTreeVisitor visitor, BlockScope scope) {
  66         visitor.visit(this, scope);
  67         visitor.endVisit(this, scope);
  68 }
  69 }