01: /* Copyright (C) 2004 - 2007 db4objects Inc. http://www.db4o.com
02:
03: This file is part of the db4o open source object database.
04:
05: db4o is free software; you can redistribute it and/or modify it under
06: the terms of version 2 of the GNU General Public License as published
07: by the Free Software Foundation and as clarified by db4objects' GPL
08: interpretation policy, available at
09: http://www.db4o.com/about/company/legalpolicies/gplinterpretation/
10: Alternatively you can write to db4objects, Inc., 1900 S Norfolk Street,
11: Suite 350, San Mateo, CA 94403, USA.
12:
13: db4o is distributed in the hope that it will be useful, but WITHOUT ANY
14: WARRANTY; without even the implied warranty of MERCHANTABILITY or
15: FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
16: for more details.
17:
18: You should have received a copy of the GNU General Public License along
19: with this program; if not, write to the Free Software Foundation, Inc.,
20: 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
21: package com.db4o.test.nativequery.analysis;
22:
23: import EDU.purdue.cs.bloat.editor.*;
24:
25: import com.db4o.nativequery.expr.*;
26: import com.db4o.nativequery.expr.cmp.*;
27:
28: public class BooleanReturnValueTestCase extends
29: NQOptimizationByteCodeTestCaseBase {
30:
31: private static final String FIELDNAME = "bool";
32:
33: protected void assertOptimization(Expression expression)
34: throws Exception {
35: NQOptimizationAssertUtil.assertComparison(expression,
36: new String[] { FIELDNAME }, Boolean.TRUE,
37: ComparisonOperator.EQUALS, false);
38: }
39:
40: protected void generateMethodBody(MethodEditor method) {
41: Label falseLabel = createLabel();
42: Label trueLabel = createLabel();
43: Label returnLabel = createLabel();
44: method.addInstruction(Opcode.opc_aload, new LocalVariable(1));
45: method.addInstruction(Opcode.opc_getfield,
46: createFieldReference(Type.getType(Data.class),
47: FIELDNAME, Type.BOOLEAN));
48: method.addInstruction(Opcode.opc_ldc, new Integer(1));
49: method.addInstruction(Opcode.opc_if_icmpne, falseLabel);
50: method.addLabel(trueLabel);
51: method.addInstruction(Opcode.opc_ldc, new Integer(1));
52: method.addInstruction(Opcode.opc_goto, returnLabel);
53: method.addLabel(falseLabel);
54: method.addInstruction(Opcode.opc_ldc, new Integer(0));
55: method.addLabel(returnLabel);
56: method.addInstruction(Opcode.opc_ireturn);
57: }
58:
59: }
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