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/*
* Copyright (C) 2012 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.jack.frontend;
import com.android.jack.TestTools;
import com.android.jack.ir.ast.JBlock;
import com.android.jack.ir.ast.JGoto;
import com.android.jack.ir.ast.JLabel;
import com.android.jack.ir.ast.JLabeledStatement;
import com.android.jack.ir.ast.JMethod;
import com.android.jack.ir.ast.JMethodBody;
import com.android.jack.ir.ast.JReturnStatement;
import com.android.jack.ir.ast.JStatement;
import com.android.jack.ir.sourceinfo.SourceInfo;
import junit.framework.Assert;
import junit.framework.AssertionFailedError;
import org.junit.Before;
import org.junit.Test;
import java.util.List;
public class GotoTest {
private static final String TEST_CLASS_BINARY_NAME = "com/android/jack/frontend/SynthetizeCode";
@Before
public void setUp() throws Exception {
GotoTest.class.getClassLoader().setDefaultAssertionStatus(true);
}
@Test
public void dumpGoto() throws Exception {
JMethod dumpGoto = TestTools.getJMethodWithRejectAllFilter(
TestTools.getJackUnitTestFromBinaryName(TEST_CLASS_BINARY_NAME),
"L" + TEST_CLASS_BINARY_NAME + ";", "synthetizeCode()V");
JMethodBody body = (JMethodBody) dumpGoto.getBody();
assert body != null;
List<JStatement> stmts = body.getStatements();
Assert.assertEquals(1, stmts.size());
Assert.assertTrue(stmts.get(0) instanceof JReturnStatement);
JBlock block = body.getBlock();
SourceInfo srcInfo = stmts.get(0).getSourceInfo();
String label = "label";
try {
block.addStmt(0, new JGoto(SourceInfo.UNKNOWN, new JLabeledStatement(
srcInfo, new JLabel(srcInfo, label), stmts.get(0))));
Assert.fail();
}
catch (AssertionFailedError e) {
// Thrown by Assert.fail(). This prevents this message from being caught
// by next catch clause and thus being ignored.
// This error may be caused by disabled assertions which can occur if this
// test is ran with a test suite that use Jack compilation with disabled
// sanity checks.
Assert.fail("Warning: this test is only valid with assertions enabled. " +
"You should check that it is case before considering there's a bug.");
}
catch (AssertionError e) {
// Normal since goto target return instead of block containing return
}
JBlock gotoTargetBlock = new JBlock(srcInfo);
gotoTargetBlock.addStmt(stmts.get(0));
block.addStmt(0, new JGoto(SourceInfo.UNKNOWN, new JLabeledStatement(
srcInfo, new JLabel(srcInfo, label), gotoTargetBlock)));
stmts = body.getStatements();
Assert.assertEquals(2, stmts.size());
Assert.assertTrue(stmts.get(0) instanceof JGoto);
Assert.assertEquals("goto "+label, stmts.get(0).toSource());
}
}
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