misc changes
[phpeclipse.git] / net.sourceforge.phpeclipse / src / net / sourceforge / phpdt / internal / compiler / ast / BranchStatement.java
1 /*******************************************************************************
2  * Copyright (c) 2000, 2001, 2002 International Business Machines Corp. and others.
3  * All rights reserved. This program and the accompanying materials 
4  * are made available under the terms of the Common Public License v0.5 
5  * which accompanies this distribution, and is available at
6  * http://www.eclipse.org/legal/cpl-v05.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.codegen.*;
14 import net.sourceforge.phpdt.internal.compiler.lookup.*;
15
16 public abstract class BranchStatement extends Statement {
17         public char[] label;
18         public Label targetLabel;
19         public AstNode[] 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                         AstNode sub;
45                         if ((sub = subroutines[i]) instanceof SynchronizedStatement){
46                                 codeStream.load(((SynchronizedStatement)sub).synchroVariable);
47                                 codeStream.monitorexit(); 
48                         } else {
49                                 TryStatement trySub = (TryStatement) sub;
50                                 if (trySub.subRoutineCannotReturn)      {
51                                         codeStream.goto_(trySub.subRoutineStartLabel);
52                                         codeStream.recordPositionsFrom(pc, this.sourceStart);
53                                         return;
54                                 } else {
55                                         codeStream.jsr(trySub.subRoutineStartLabel);
56                                 }
57                         }
58                 }
59         }
60         codeStream.goto_(targetLabel);
61         codeStream.recordPositionsFrom(pc, this.sourceStart);
62 }
63 public void resetStateForCodeGeneration() {
64         this.targetLabel.resetStateForCodeGeneration();
65 }
66 }