01: /*
02: * This file is part of PFIXCORE.
03: *
04: * PFIXCORE is free software; you can redistribute it and/or modify
05: * it under the terms of the GNU Lesser General Public License as published by
06: * the Free Software Foundation; either version 2 of the License, or
07: * (at your option) any later version.
08: *
09: * PFIXCORE is distributed in the hope that it will be useful,
10: * but WITHOUT ANY WARRANTY; without even the implied warranty of
11: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12: * GNU Lesser General Public License for more details.
13: *
14: * You should have received a copy of the GNU Lesser General Public License
15: * along with PFIXCORE; if not, write to the Free Software
16: * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17: */
18:
19: package de.schlund.pfixcore.scriptedflow.compiler;
20:
21: import de.schlund.pfixcore.scriptedflow.vm.Instruction;
22: import de.schlund.pfixcore.scriptedflow.vm.JumpUncondInstruction;
23:
24: /**
25: * Statement which tells the VM to leave the innermost while-loop
26: *
27: * @author Sebastian Marsching <sebastian.marsching@1und1.de>
28: */
29: public class BreakStatement extends AbstractStatement {
30: private Instruction instr = null;
31:
32: public BreakStatement(Statement parent) {
33: super (parent);
34: }
35:
36: public Instruction[] getInstructions() {
37: if (instr == null) {
38: Statement temp = this ;
39: while (!(temp instanceof WhileStatement)) {
40: temp = temp.getParentStatement();
41: if (temp == null) {
42: throw new RuntimeException(
43: "Break without surrounding while!");
44: }
45: }
46: WhileStatement whileStmt = (WhileStatement) temp;
47: instr = new JumpUncondInstruction(whileStmt
48: .getFinalInstruction());
49: }
50: return new Instruction[] { instr };
51: }
52:
53: }
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