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 */
BranchStatement(char[] l, int s,int e)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 */
generateCode(BlockScope currentScope, CodeStream codeStream)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 }
resolve(BlockScope scope)58 public void resolve(BlockScope scope) {
59 // nothing to do during name resolution
60 }
61
62 }
63