repo/org.ibex.tool/src/org/eclipse/jdt/internal/compiler/ast/BranchStatement.java

   1 /*******************************************************************************
   2  * Copyright (c) 2000, 2004 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 org.eclipse.jdt.internal.compiler.ast;
  12
  13 import org.eclipse.jdt.internal.compiler.codegen.*;
  14 import org.eclipse.jdt.internal.compiler.lookup.*;
  15
  16 public abstract class BranchStatement extends Statement {
  17         public char[] label;
  18         public Label targetLabel;
  19         public SubRoutineStatement[] subroutines;
  20 /**
  21  * BranchStatement constructor comment.
  22  */
  23 public BranchStatement(char[] l, int s,int e) {
  24         label = l ;
  25         sourceStart = s;
  26         sourceEnd = e;
  27 }
  28 /**
  29  * Branch code generation
  30  *
  31  *   generate the finallyInvocationSequence.
  32  */
  33 public void generateCode(BlockScope currentScope, CodeStream codeStream) {
  34
  35         if ((bits & IsReachableMASK) == 0) {
  36                 return;
  37         }
  38         int pc = codeStream.position;
  39
  40         // generation of code responsible for invoking the finally
  41         // blocks in sequence
  42         if (subroutines != null){
  43                 for (int i = 0, max = subroutines.length; i < max; i++){
  44                         SubRoutineStatement sub = subroutines[i];
  45                         sub.generateSubRoutineInvocation(currentScope, codeStream);
  46                         if (sub.isSubRoutineEscaping()) {
  47                                         codeStream.recordPositionsFrom(pc, this.sourceStart);
  48                                         SubRoutineStatement.reenterExceptionHandlers(subroutines, i, codeStream);
  49                                         return;
  50                         }
  51                         sub.exitAnyExceptionHandler();
  52                 }
  53         }
  54         codeStream.goto_(targetLabel);
  55         codeStream.recordPositionsFrom(pc, this.sourceStart);
  56         SubRoutineStatement.reenterExceptionHandlers(subroutines, -1, codeStream);
  57 }
  58 public void resolve(BlockScope scope) {
  59         // nothing to do during name resolution
  60 }
  61
  62 }