net.sourceforge.phpeclipse/src/net/sourceforge/phpeclipse/internal/compiler/ast/ClassLiteralAccess.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.phpeclipse.internal.compiler.ast;
  12
  13 import net.sourceforge.phpdt.internal.compiler.IAbstractSyntaxTreeVisitor;
  14 import net.sourceforge.phpdt.internal.compiler.flow.FlowContext;
  15 import net.sourceforge.phpdt.internal.compiler.flow.FlowInfo;
  16 import net.sourceforge.phpdt.internal.compiler.lookup.ArrayBinding;
  17 import net.sourceforge.phpdt.internal.compiler.lookup.BlockScope;
  18 import net.sourceforge.phpdt.internal.compiler.lookup.FieldBinding;
  19 import net.sourceforge.phpdt.internal.compiler.lookup.SourceTypeBinding;
  20 import net.sourceforge.phpdt.internal.compiler.lookup.TypeBinding;
  21
  22 public class ClassLiteralAccess extends Expression {
  23
  24         public TypeReference type;
  25         public TypeBinding targetType;
  26         FieldBinding syntheticField;
  27
  28         public ClassLiteralAccess(int sourceEnd, TypeReference t) {
  29                 type = t;
  30                 this.sourceStart = t.sourceStart;
  31                 this.sourceEnd = sourceEnd;
  32         }
  33
  34         public FlowInfo analyseCode(
  35                 BlockScope currentScope,
  36                 FlowContext flowContext,
  37                 FlowInfo flowInfo) {
  38
  39                 // if reachable, request the addition of a synthetic field for caching the class descriptor
  40                 SourceTypeBinding sourceType =
  41                         currentScope.outerMostMethodScope().enclosingSourceType();
  42                 if (!(sourceType.isInterface()
  43                         // no field generated in interface case (would'nt verify) see 1FHHEZL
  44                         || sourceType.isBaseType())) {
  45                         syntheticField = sourceType.addSyntheticField(targetType, currentScope);
  46                 }
  47                 return flowInfo;
  48         }
  49
  50         /**
  51          * MessageSendDotClass code generation
  52          *
  53          * @param currentScope org.eclipse.jdt.internal.compiler.lookup.BlockScope
  54          * @param codeStream org.eclipse.jdt.internal.compiler.codegen.CodeStream
  55          * @param valueRequired boolean
  56          */
  57 //      public void generateCode(
  58 //              BlockScope currentScope,
  59 //              CodeStream codeStream,
  60 //              boolean valueRequired) {
  61 //              int pc = codeStream.position;
  62 //
  63 //              // in interface case, no caching occurs, since cannot make a cache field for interface
  64 //              if (valueRequired)
  65 //                      codeStream.generateClassLiteralAccessForType(type.resolvedType, syntheticField);
  66 //              codeStream.recordPositionsFrom(pc, this.sourceStart);
  67 //      }
  68
  69         public TypeBinding resolveType(BlockScope scope) {
  70
  71                 constant = NotAConstant;
  72                 if ((targetType = type.resolveType(scope)) == null)
  73                         return null;
  74
  75                 if (targetType.isArrayType()
  76                         && ((ArrayBinding) targetType).leafComponentType == VoidBinding) {
  77                         scope.problemReporter().cannotAllocateVoidArray(this);
  78                         return null;
  79                 }
  80
  81                 return this.resolvedType = scope.getJavaLangClass();
  82         }
  83
  84         public String toStringExpression() {
  85
  86                 String s = ""; //$NON-NLS-1$
  87                 s = s + type.toString(0) + ".class"; //$NON-NLS-1$
  88                 return s;
  89         }
  90
  91         public void traverse(
  92                 IAbstractSyntaxTreeVisitor visitor,
  93                 BlockScope blockScope) {
  94
  95                 if (visitor.visit(this, blockScope)) {
  96                         type.traverse(visitor, blockScope);
  97                 }
  98                 visitor.endVisit(this, blockScope);
  99         }
 100 }