191 lines
8.1 KiB
Java
191 lines
8.1 KiB
Java
/*******************************************************************************
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* Copyright (c) 2002 - 2006 IBM Corporation.
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* All rights reserved. This program and the accompanying materials
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* are made available under the terms of the Eclipse Public License v1.0
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* which accompanies this distribution, and is available at
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* http://www.eclipse.org/legal/epl-v10.html
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*
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* Contributors:
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* IBM Corporation - initial API and implementation
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*******************************************************************************/
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package com.ibm.wala.core.tests.ir;
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import org.junit.AfterClass;
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import org.junit.Assert;
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import org.junit.BeforeClass;
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import org.junit.Test;
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import com.ibm.wala.classLoader.ClassLoaderFactory;
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import com.ibm.wala.classLoader.ClassLoaderFactoryImpl;
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import com.ibm.wala.classLoader.IClass;
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import com.ibm.wala.classLoader.IMethod;
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import com.ibm.wala.core.tests.util.TestConstants;
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import com.ibm.wala.core.tests.util.WalaTestCase;
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import com.ibm.wala.ipa.callgraph.AnalysisCache;
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import com.ibm.wala.ipa.callgraph.AnalysisOptions;
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import com.ibm.wala.ipa.callgraph.AnalysisScope;
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import com.ibm.wala.ipa.callgraph.impl.Everywhere;
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import com.ibm.wala.ipa.cha.ClassHierarchy;
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import com.ibm.wala.ipa.cha.ClassHierarchyException;
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import com.ibm.wala.ssa.IR;
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import com.ibm.wala.ssa.SSAInstruction;
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import com.ibm.wala.ssa.SSAOptions;
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import com.ibm.wala.ssa.SSAPiNodePolicy;
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import com.ibm.wala.types.Descriptor;
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import com.ibm.wala.types.MethodReference;
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import com.ibm.wala.types.Selector;
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import com.ibm.wala.types.TypeReference;
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import com.ibm.wala.util.config.AnalysisScopeReader;
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import com.ibm.wala.util.debug.Assertions;
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import com.ibm.wala.util.io.FileProvider;
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import com.ibm.wala.util.strings.Atom;
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import com.ibm.wala.util.strings.ImmutableByteArray;
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import com.ibm.wala.util.strings.UTF8Convert;
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/**
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* Test IR's getLocalNames.
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*/
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public class LocalNamesTest extends WalaTestCase {
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private static final ClassLoader MY_CLASSLOADER = LocalNamesTest.class.getClassLoader();
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private static AnalysisScope scope;
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private static ClassHierarchy cha;
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private static AnalysisOptions options;
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private static AnalysisCache cache;
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public static void main(String[] args) {
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justThisTest(LocalNamesTest.class);
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}
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/*
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* @see junit.framework.TestCase#setUp()
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*/
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@BeforeClass
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public static void beforeClass() throws Exception {
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scope = AnalysisScopeReader.readJavaScope(TestConstants.WALA_TESTDATA,
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(new FileProvider()).getFile("J2SEClassHierarchyExclusions.txt"), MY_CLASSLOADER);
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options = new AnalysisOptions(scope, null);
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cache = new AnalysisCache();
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ClassLoaderFactory factory = new ClassLoaderFactoryImpl(scope.getExclusions());
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try {
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cha = ClassHierarchy.make(scope, factory);
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} catch (ClassHierarchyException e) {
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throw new Exception();
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}
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}
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/*
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* (non-Javadoc)
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*
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* @see junit.framework.TestCase#tearDown()
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*/
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@AfterClass
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public static void afterClass() throws Exception {
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scope = null;
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cha = null;
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options = null;
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cache = null;
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}
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/**
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* Build an IR, then check getLocalNames
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*/
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@Test
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public void testAliasNames() {
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try {
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AnalysisScope scope = AnalysisScopeReader.readJavaScope(TestConstants.WALA_TESTDATA, (new FileProvider())
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.getFile("J2SEClassHierarchyExclusions.txt"), MY_CLASSLOADER);
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ClassHierarchy cha = ClassHierarchy.make(scope);
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TypeReference t = TypeReference.findOrCreateClass(scope.getApplicationLoader(), "cornerCases", "AliasNames");
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IClass klass = cha.lookupClass(t);
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Assert.assertTrue(klass != null);
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IMethod m = klass.getMethod(new Selector(Atom.findOrCreateAsciiAtom("foo"), Descriptor
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.findOrCreateUTF8("([Ljava/lang/String;)V")));
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AnalysisOptions options = new AnalysisOptions();
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options.getSSAOptions().setPiNodePolicy(SSAOptions.getAllBuiltInPiNodes());
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IR ir = cache.getSSACache().findOrCreateIR(m, Everywhere.EVERYWHERE, options.getSSAOptions());
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for (int offsetIndex = 0; offsetIndex < ir.getInstructions().length; offsetIndex++) {
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SSAInstruction instr = ir.getInstructions()[offsetIndex];
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if (instr != null) {
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String[] localNames = ir.getLocalNames(offsetIndex, instr.getDef());
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if (localNames != null && localNames.length > 0 && localNames[0] == null) {
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System.err.println(ir);
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Assert.assertTrue(" getLocalNames() returned [null,...] for the def of instruction at offset " + offsetIndex
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+ "\n\tinstr", false);
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}
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}
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}
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} catch (Exception e) {
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e.printStackTrace();
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Assertions.UNREACHABLE();
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}
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}
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@Test
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public void testLocalNamesWithoutPiNodes() {
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SSAPiNodePolicy save = options.getSSAOptions().getPiNodePolicy();
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options.getSSAOptions().setPiNodePolicy(null);
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MethodReference mref = scope.findMethod(AnalysisScope.APPLICATION, "LcornerCases/Locals", Atom.findOrCreateUnicodeAtom("foo"),
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new ImmutableByteArray(UTF8Convert.toUTF8("([Ljava/lang/String;)V")));
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Assert.assertNotNull("method not found", mref);
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IMethod imethod = cha.resolveMethod(mref);
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Assert.assertNotNull("imethod not found", imethod);
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IR ir = cache.getIRFactory().makeIR(imethod, Everywhere.EVERYWHERE, options.getSSAOptions());
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options.getSSAOptions().setPiNodePolicy(save);
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// v1 should be the parameter "a" at pc 0
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String[] names = ir.getLocalNames(0, 1);
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Assert.assertTrue("failed local name resolution for v1@0", names != null);
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Assert.assertTrue("incorrect number of local names for v1@0: " + names.length, names.length == 1);
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Assert.assertTrue("incorrect local name resolution for v1@0: " + names[0], names[0].equals("a"));
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// v2 is a compiler-induced temporary
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Assert.assertTrue("didn't expect name for v2 at pc 2", ir.getLocalNames(2, 2) == null);
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// at pc 5, v1 should represent the locals "a" and "b"
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names = ir.getLocalNames(5, 1);
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Assert.assertTrue("failed local name resolution for v1@5", names != null);
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Assert.assertTrue("incorrect number of local names for v1@5: " + names.length, names.length == 2);
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Assert.assertTrue("incorrect local name resolution #0 for v1@5: " + names[0], names[0].equals("a"));
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Assert.assertTrue("incorrect local name resolution #1 for v1@5: " + names[1], names[1].equals("b"));
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}
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@Test
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public void testLocalNamesWithPiNodes() {
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SSAPiNodePolicy save = options.getSSAOptions().getPiNodePolicy();
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options.getSSAOptions().setPiNodePolicy(SSAOptions.getAllBuiltInPiNodes());
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MethodReference mref = scope.findMethod(AnalysisScope.APPLICATION, "LcornerCases/Locals", Atom.findOrCreateUnicodeAtom("foo"),
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new ImmutableByteArray(UTF8Convert.toUTF8("([Ljava/lang/String;)V")));
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Assert.assertNotNull("method not found", mref);
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IMethod imethod = cha.resolveMethod(mref);
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Assert.assertNotNull("imethod not found", imethod);
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IR ir = cache.getIRFactory().makeIR(imethod, Everywhere.EVERYWHERE, options.getSSAOptions());
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options.getSSAOptions().setPiNodePolicy(save);
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// v1 should be the parameter "a" at pc 0
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String[] names = ir.getLocalNames(0, 1);
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Assert.assertTrue("failed local name resolution for v1@0", names != null);
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Assert.assertTrue("incorrect number of local names for v1@0: " + names.length, names.length == 1);
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Assert.assertTrue("incorrect local name resolution for v1@0: " + names[0], names[0].equals("a"));
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// v2 is a compiler-induced temporary
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Assert.assertTrue("didn't expect name for v2 at pc 2", ir.getLocalNames(2, 2) == null);
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// at pc 5, v1 should represent the locals "a" and "b"
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names = ir.getLocalNames(5, 1);
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Assert.assertTrue("failed local name resolution for v1@5", names != null);
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Assert.assertTrue("incorrect number of local names for v1@5: " + names.length, names.length == 2);
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Assert.assertTrue("incorrect local name resolution #0 for v1@5: " + names[0], names[0].equals("a"));
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Assert.assertTrue("incorrect local name resolution #1 for v1@5: " + names[1], names[1].equals("b"));
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}
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}
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