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/*******************************************************************************
* Copyright (c) 2019 Sebastian Zarnekow and others.
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* Sebastian Zarnekow - initial API and implementation
*******************************************************************************/
package org.eclipse.jdt.core.tests.builder;
import static org.junit.Assert.assertArrayEquals;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.lang.reflect.Field;
import java.util.Arrays;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IPath;
import org.eclipse.jdt.core.JavaModelException;
import org.eclipse.jdt.core.compiler.CharOperation;
import org.eclipse.jdt.core.tests.util.Util;
import org.eclipse.jdt.internal.compiler.util.SimpleLookupTable;
import org.eclipse.jdt.internal.core.JavaModelManager;
import org.eclipse.jdt.internal.core.JavaModelManager.PerProjectInfo;
import org.eclipse.jdt.internal.core.builder.JavaBuilder;
import org.eclipse.jdt.internal.core.builder.ReferenceCollection;
import org.eclipse.jdt.internal.core.builder.State;
import junit.framework.Test;
public class StateTest extends BuilderTests {
public StateTest(String name) {
super(name);
}
public static Test suite() {
return buildTestSuite(StateTest.class);
}
public void testWriteAndReadState() throws JavaModelException, Exception {
IPath interfaceProjectPath = env.addProject("Interface"); //$NON-NLS-1$
env.addExternalJars(interfaceProjectPath, Util.getJavaClassLibs());
IPath implementationProjectPath = env.addProject("Implementation"); //$NON-NLS-1$
env.addExternalJars(implementationProjectPath, Util.getJavaClassLibs());
env.addClassFolder(implementationProjectPath, interfaceProjectPath, false);
env.addClass(interfaceProjectPath, "a", "Interfaze", //$NON-NLS-1$ //$NON-NLS-2$
"package a;\n" +
"public interface Interfaze {\n" +
" void callMe();\n" +
"}" //$NON-NLS-1$
);
env.addClass(interfaceProjectPath, "c", "Impl1", //$NON-NLS-1$ //$NON-NLS-2$
"package c;\n" +
"import a.Interfaze;\n" +
"public class Impl1 implements Interfaze {\n" +
" @Override\n" +
" public void callMe() {\n" +
" }\n" +
"}"
);
env.addClass(implementationProjectPath, "b", "Impl2", //$NON-NLS-1$ //$NON-NLS-2$
"package b;\n" +
"import a.Interfaze;\n" +
"public class Impl2 implements Interfaze {\n" +
" @Override\n" +
" public void callMe() {\n" +
" }\n" +
"}" //$NON-NLS-1$
);
fullBuild();
writeReadAndCompareReferences(interfaceProjectPath);
writeReadAndCompareReferences(implementationProjectPath);
}
private void writeReadAndCompareReferences(IPath projectPath)
throws JavaModelException, IOException, CoreException {
JavaModelManager javaModelManager = JavaModelManager.getJavaModelManager();
IProject project = env.getProject(projectPath);
PerProjectInfo info = javaModelManager.getPerProjectInfoCheckExistence(project);
ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
State savedState = (State) info.savedState;
JavaBuilder.writeState(savedState, new DataOutputStream(outputStream));
byte[] bytes = outputStream.toByteArray();
State readState = JavaBuilder.readState(project, new DataInputStream(new ByteArrayInputStream(bytes)));
SimpleLookupTable readReferences = readState.getReferences();
assertEqualLookupTables(savedState.getReferences(), readReferences);
}
private void assertEqualLookupTables(SimpleLookupTable expectation, SimpleLookupTable actual) {
assertEquals(expectation.elementSize, actual.elementSize);
Object[] expectedKeys = expectation.keyTable;
for(int i = 0; i < expectedKeys.length; i++) {
Object key = expectedKeys[i];
if (key != null) {
ReferenceCollection actualReferenceCollection = (ReferenceCollection) actual.get(key);
ReferenceCollection expectedReferenceCollection = (ReferenceCollection) expectation.valueTable[i];
assertEqualReferenceCollections(expectedReferenceCollection, actualReferenceCollection);
}
}
}
private void assertEqualReferenceCollections(ReferenceCollection expectedReferenceCollection,
ReferenceCollection actualReferenceCollection) {
{
char[][] expected = getSimpleNameReferences(expectedReferenceCollection);
char[][] actual = getSimpleNameReferences(actualReferenceCollection);
assertArrayEquals(toStringArray(expected), toStringArray(actual));
}
{
char[][] expected = getRootReferences(expectedReferenceCollection);
char[][] actual = getRootReferences(actualReferenceCollection);
assertArrayEquals(toStringArray(expected), toStringArray(actual));
}
{
char[][][] expected = getQualifiedNameReferences(expectedReferenceCollection);
char[][][] actual = getQualifiedNameReferences(actualReferenceCollection);
assertArrayEquals(toStringArray(expected), toStringArray(actual));
}
}
private static String[] toStringArray(char[][][] qualifiedNameReferences) {
return Arrays.stream(qualifiedNameReferences).map(a -> CharOperation.toString(a)).toArray(String[]::new);
}
private static String[] toStringArray(char[][] qualifiedNameReferences) {
return Arrays.stream(qualifiedNameReferences).map(a -> CharOperation.charToString(a)).toArray(String[]::new);
}
char[][][] getQualifiedNameReferences(ReferenceCollection collection) {
try {
Field fld = ReferenceCollection.class.getDeclaredField("qualifiedNameReferences");
fld.setAccessible(true);
return (char[][][]) fld.get(collection);
} catch (NoSuchFieldException | SecurityException | IllegalArgumentException | IllegalAccessException e) {
throw new RuntimeException(e);
}
}
char[][] getSimpleNameReferences(ReferenceCollection collection) {
try {
Field fld = ReferenceCollection.class.getDeclaredField("simpleNameReferences");
fld.setAccessible(true);
return (char[][]) fld.get(collection);
} catch (NoSuchFieldException | SecurityException | IllegalArgumentException | IllegalAccessException e) {
throw new RuntimeException(e);
}
}
char[][] getRootReferences(ReferenceCollection collection) {
try {
Field fld = ReferenceCollection.class.getDeclaredField("rootReferences");
fld.setAccessible(true);
return (char[][]) fld.get(collection);
} catch (NoSuchFieldException | SecurityException | IllegalArgumentException | IllegalAccessException e) {
throw new RuntimeException(e);
}
}
}
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