net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/compiler/ast/Initializer.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.ASTVisitor;
  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.MethodScope;
  17 import net.sourceforge.phpdt.internal.compiler.lookup.ReferenceBinding;
  18 import net.sourceforge.phpdt.internal.compiler.parser.UnitParser;
  19
  20 public class Initializer extends FieldDeclaration {
  21
  22         public Block block;
  23
  24         public int lastFieldID;
  25
  26         public int bodyStart;
  27
  28         public Initializer(Block block, int modifiers) {
  29                 this.block = block;
  30                 this.modifiers = modifiers;
  31
  32                 declarationSourceStart = sourceStart = bodyStart = block.sourceStart;
  33         }
  34
  35         public FlowInfo analyseCode(MethodScope currentScope,
  36                         FlowContext flowContext, FlowInfo flowInfo) {
  37
  38                 return block.analyseCode(currentScope, flowContext, flowInfo);
  39         }
  40
  41         /**
  42          * Code generation for a non-static initializer: standard block code gen
  43          *
  44          * @param currentScope
  45          *            net.sourceforge.phpdt.internal.compiler.lookup.BlockScope
  46          * @param codeStream
  47          *            net.sourceforge.phpdt.internal.compiler.codegen.CodeStream
  48          */
  49         // public void generateCode(BlockScope currentScope, CodeStream codeStream)
  50         // {
  51         //
  52         // if ((bits & IsReachableMASK) == 0) {
  53         // return;
  54         // }
  55         // int pc = codeStream.position;
  56         // block.generateCode(currentScope, codeStream);
  57         // codeStream.recordPositionsFrom(pc, this.sourceStart);
  58         // }
  59         public boolean isField() {
  60
  61                 return false;
  62         }
  63
  64         public boolean isStatic() {
  65
  66                 return (modifiers & AccStatic) != 0;
  67         }
  68
  69         public void parseStatements(UnitParser parser, TypeDeclaration type,
  70                         CompilationUnitDeclaration unit) {
  71
  72                 // fill up the method body with statement
  73                 parser.parse(this, type, unit);
  74         }
  75
  76         public void resolve(MethodScope scope) {
  77
  78                 int previous = scope.fieldDeclarationIndex;
  79                 try {
  80                         scope.fieldDeclarationIndex = lastFieldID;
  81                         if (isStatic()) {
  82                                 ReferenceBinding declaringType = scope.enclosingSourceType();
  83                                 if (declaringType.isNestedType() && !declaringType.isStatic())
  84                                         scope.problemReporter()
  85                                                         .innerTypesCannotDeclareStaticInitializers(
  86                                                                         declaringType, this);
  87                         }
  88                         block.resolve(scope);
  89                 } finally {
  90                         scope.fieldDeclarationIndex = previous;
  91                 }
  92         }
  93
  94         public String toString(int tab) {
  95
  96                 if (modifiers != 0) {
  97                         StringBuffer buffer = new StringBuffer();
  98                         buffer.append(tabString(tab));
  99                         buffer.append(modifiersString(modifiers));
 100                         buffer.append("{\n"); //$NON-NLS-1$
 101                         buffer.append(block.toStringStatements(tab));
 102                         buffer.append(tabString(tab));
 103                         buffer.append("}"); //$NON-NLS-1$
 104                         return buffer.toString();
 105                 } else {
 106                         return block.toString(tab);
 107                 }
 108         }
 109
 110         public void traverse(ASTVisitor visitor, MethodScope scope) {
 111
 112                 if (visitor.visit(this, scope)) {
 113                         block.traverse(visitor, scope);
 114                 }
 115                 visitor.endVisit(this, scope);
 116         }
 117 }