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/*******************************************************************************
* Copyright (c) 2004 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
/*
* Created on Sept 30, 2004
*/
package org.eclipse.cdt.core.parser.tests;
import java.io.StringWriter;
import java.io.Writer;
import junit.framework.Test;
import junit.framework.TestSuite;
import org.eclipse.cdt.core.parser.CodeReader;
import org.eclipse.cdt.core.parser.IParser;
import org.eclipse.cdt.core.parser.ISourceElementRequestor;
import org.eclipse.cdt.core.parser.NullLogService;
import org.eclipse.cdt.core.parser.NullSourceElementRequestor;
import org.eclipse.cdt.core.parser.ParseError;
import org.eclipse.cdt.core.parser.ParserFactory;
import org.eclipse.cdt.core.parser.ParserLanguage;
import org.eclipse.cdt.core.parser.ParserMode;
import org.eclipse.cdt.core.parser.ScannerInfo;
import org.eclipse.core.resources.IFile;
import org.eclipse.cdt.core.parser.ast.IASTMacro;
import org.eclipse.cdt.core.parser.ast.IASTVariable;
/**
* @author dsteffle
*/
public class ScannerParserLoopTest extends FileBasePluginTest {
private static final int NUMBER_ITERATIONS = 30000;
public ScannerParserLoopTest(String name) {
super(name, ScannerParserLoopTest.class);
}
public static Test suite() {
TestSuite suite = new TestSuite(ScannerParserLoopTest.class);
suite.addTest(new ScannerParserLoopTest("cleanupProject")); //$NON-NLS-1$
return suite;
}
// test scanner cancel()
public void testBug72611A() throws Exception {
Writer writer = new StringWriter();
for (int i = 0; i < NUMBER_ITERATIONS; i++) {
writer.write("#define A");
writer.write(String.valueOf(i));
writer.write(" B");
writer.write(String.valueOf(i));
writer.write("\n");
writer.write("#define B");
writer.write(String.valueOf(i));
writer.write(" C");
writer.write(String.valueOf(i));
writer.write("\n");
writer.write("#define C");
writer.write(String.valueOf(i));
writer.write(" D");
writer.write(String.valueOf(i));
writer.write("\n");
}
runCancelTest(writer);
}
// test parser cancel()
public void testBug72611B() throws Exception {
Writer writer = new StringWriter();
for (int i = 0; i < NUMBER_ITERATIONS; i++) {
writer.write("int a");
writer.write(String.valueOf(i));
writer.write("; // comment\n");
}
runCancelTest(writer);
}
private void runCancelTest(Writer writer) throws Exception {
IFile file = importFile("code.cpp", writer.toString()); //$NON-NLS-1$
try {
TimeoutCallback callback = new TimeoutCallback();
IParser parser = ParserFactory.createParser(ParserFactory
.createScanner(new CodeReader(file.getRawLocation()
.toString()), new ScannerInfo(), //$NON-NLS-1$
ParserMode.COMPLETE_PARSE, ParserLanguage.CPP,
callback, new NullLogService(), null), callback,
ParserMode.COMPLETE_PARSE, ParserLanguage.CPP, null);
callback.setParser(parser);
parser.parse();
assertTrue(false); // fail if parse succeeds before being cancelled
} catch (ParseError pe) { // expected
assertEquals(pe.getErrorKind(),
ParseError.ParseErrorKind.TIMEOUT_OR_CANCELLED);
}
}
private static class TimeoutCallback extends NullSourceElementRequestor
implements ISourceElementRequestor {
private IParser parser;
private boolean timerStarted = false;
public void setParser(IParser parser) {
this.parser = parser;
}
public void acceptMacro(IASTMacro macro) {
parser.cancel();
}
public void acceptVariable(IASTVariable variable) {
parser.cancel();
}
}
}
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