net.sourceforge.phpeclipse/src/net/sourceforge/phpeclipse/internal/compiler/ast/DefaultCase.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.codegen.CaseLabel;
  15 import net.sourceforge.phpdt.internal.compiler.flow.FlowContext;
  16 import net.sourceforge.phpdt.internal.compiler.flow.FlowInfo;
  17 import net.sourceforge.phpdt.internal.compiler.impl.Constant;
  18 import net.sourceforge.phpdt.internal.compiler.lookup.BlockScope;
  19 import net.sourceforge.phpdt.internal.compiler.lookup.TypeBinding;
  20
  21
  22 public class DefaultCase extends Statement {
  23
  24         public CaseLabel targetLabel;
  25         /**
  26          * DefautCase constructor comment.
  27          */
  28         public DefaultCase(int sourceEnd, int sourceStart) {
  29
  30                 this.sourceStart = sourceStart;
  31                 this.sourceEnd = sourceEnd;
  32         }
  33
  34         public FlowInfo analyseCode(
  35                 BlockScope currentScope,
  36                 FlowContext flowContext,
  37                 FlowInfo flowInfo) {
  38
  39                 return flowInfo;
  40         }
  41
  42         /**
  43          * Default case code generation
  44          *
  45          * @param currentScope org.eclipse.jdt.internal.compiler.lookup.BlockScope
  46          * @param codeStream org.eclipse.jdt.internal.compiler.codegen.CodeStream
  47          */
  48 //      public void generateCode(BlockScope currentScope, CodeStream codeStream) {
  49 //
  50 //              if ((bits & IsReachableMASK) == 0) {
  51 //                      return;
  52 //              }
  53 //              int pc = codeStream.position;
  54 //              targetLabel.place();
  55 //              codeStream.recordPositionsFrom(pc, this.sourceStart);
  56 //
  57 //      }
  58         /**
  59          * No-op : should use resolveCase(...) instead.
  60          */
  61         public void resolve(BlockScope scope) {
  62         }
  63
  64         public Constant resolveCase(
  65                 BlockScope scope,
  66                 TypeBinding testType,
  67                 SwitchStatement switchStatement) {
  68
  69                 // remember the default case into the associated switch statement
  70                 if (switchStatement.defaultCase != null)
  71                         scope.problemReporter().duplicateDefaultCase(this);
  72
  73                 // on error the last default will be the selected one .... (why not) ....
  74                 switchStatement.defaultCase = this;
  75                 resolve(scope);
  76                 return null;
  77         }
  78
  79         public String toString(int tab) {
  80
  81                 String s = tabString(tab);
  82                 s = s + "default : "; //$NON-NLS-1$
  83                 return s;
  84         }
  85
  86         public void traverse(
  87                 IAbstractSyntaxTreeVisitor visitor,
  88                 BlockScope blockScope) {
  89
  90                 visitor.visit(this, blockScope);
  91                 visitor.endVisit(this, blockScope);
  92         }
  93 }