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.JumpCondFalseInstruction;
23: import de.schlund.pfixcore.scriptedflow.vm.NopInstruction;
24:
25: /**
26: * Allows to bind the execution of one or more statements to a condition
27: *
28: * @author Sebastian Marsching <sebastian.marsching@1und1.de>
29: */
30: public class IfStatement extends AbstractStatement {
31:
32: private String condition;
33: private Statement child;
34: private Instruction jumpInstr = null;
35: private Instruction finalInstr = new NopInstruction();
36:
37: public IfStatement(Statement parent) {
38: super (parent);
39: }
40:
41: public void setCondition(String condition) {
42: this .condition = condition;
43: }
44:
45: public void setChild(Statement child) {
46: this .child = child;
47: }
48:
49: public Instruction[] getInstructions() {
50: if (jumpInstr == null) {
51: jumpInstr = new JumpCondFalseInstruction(condition,
52: finalInstr);
53: }
54: Instruction[] temp = child.getInstructions();
55: Instruction[] temp2 = new Instruction[temp.length + 2];
56: temp2[0] = jumpInstr;
57: temp2[temp2.length - 1] = finalInstr;
58: for (int i = 0; i < temp.length; i++) {
59: temp2[i + 1] = temp[i];
60: }
61: return temp2;
62: }
63: }
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