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juzu.impl.compiler.ProcessingContext Maven / Gradle / Ivy
/*
* Copyright 2013 eXo Platform SAS
*
* 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 juzu.impl.compiler;
import juzu.impl.common.Name;
import juzu.impl.common.FileKey;
import juzu.impl.common.Path;
import juzu.impl.compiler.file.JavaFileObjectImpl;
import juzu.impl.fs.spi.ReadFileSystem;
import juzu.impl.fs.spi.disk.DiskFileSystem;
import juzu.impl.common.Logger;
import juzu.impl.common.Spliterator;
import juzu.impl.common.Tools;
import javax.annotation.processing.Filer;
import javax.annotation.processing.ProcessingEnvironment;
import javax.lang.model.element.AnnotationMirror;
import javax.lang.model.element.AnnotationValue;
import javax.lang.model.element.Element;
import javax.lang.model.element.ExecutableElement;
import javax.lang.model.element.PackageElement;
import javax.lang.model.element.TypeElement;
import javax.lang.model.type.ArrayType;
import javax.lang.model.type.DeclaredType;
import javax.lang.model.type.ExecutableType;
import javax.lang.model.type.NoType;
import javax.lang.model.type.NullType;
import javax.lang.model.type.PrimitiveType;
import javax.lang.model.type.TypeKind;
import javax.lang.model.type.TypeMirror;
import javax.lang.model.type.WildcardType;
import javax.lang.model.util.Elements;
import javax.lang.model.util.Types;
import javax.tools.Diagnostic;
import javax.tools.FileObject;
import javax.tools.JavaFileManager;
import javax.tools.JavaFileObject;
import javax.tools.StandardLocation;
import java.io.File;
import java.io.IOException;
import java.io.Writer;
import java.lang.reflect.Method;
import java.net.URI;
import java.net.URL;
import java.net.URLClassLoader;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.ServiceConfigurationError;
import java.util.ServiceLoader;
import java.util.concurrent.Callable;
import java.util.logging.Level;
/** @author Julien Viet */
public class ProcessingContext extends Logger implements Filer, Elements, Types {
/** The base classloader for service loading, this static allow to change it for unit tests. */
public static ClassLoader baseCL = ProcessingContext.class.getClassLoader();
/** . */
private static final MessageCode UNEXPECTED_ERROR = new MessageCode("UNEXPECTED_ERROR", "Unexpected error: %1$s");
/**
* We need two locations as the {@link javax.tools.StandardLocation#SOURCE_PATH} is not supported in eclipse ide (see
* https://bugs.eclipse.org/bugs/show_bug.cgi?id=341298), however the {@link javax.tools.StandardLocation#CLASS_OUTPUT}
* seems to work fairly well.
*/
private static final StandardLocation[] RESOURCE_LOCATIONS = {StandardLocation.SOURCE_PATH, StandardLocation.CLASS_OUTPUT};
/** . */
private ProcessingEnvironment env;
/** . */
public static final Logger log = BaseProcessor.getLogger(ProcessingContext.class);
/** Set for eclipse environment. */
private final DiskFileSystem sourcePath;
/** . */
private final ProcessingTool tool;
/** The classloader for loading service via ServiceLoader. */
private final ClassLoader serviceCL;
/** The resources accessed, we need to have this map because some resources may only open one time (cf eclipse filer). */
private Map resources;
/** . */
private static final char PATH_SEPARATOR_CHAR = System.getProperty("path.separator").charAt(0);
public ProcessingContext(ProcessingEnvironment env) {
ProcessingTool tool;
if (env.getMessager().getClass().getName().startsWith("org.eclipse.jdt")) {
tool = ProcessingTool.ECLIPSE_IDE;
}
else {
tool = ProcessingTool.JAVAC;
}
//
ClassLoader serviceCL = baseCL;
//
DiskFileSystem sourcePath = null;
try {
// As first attempt we tried to use the classpath since eclipse would copy the template to this location
// but that could a chicken egg problem as a template is coped in the classpath only if the compilation
// is successfull and sometimes a controller references a template literal that is generated from the
// template source
ClassLoader cl = env.getClass().getClassLoader();
Class eclipseImplClass = cl.loadClass("org.eclipse.jdt.internal.apt.pluggable.core.dispatch.IdeProcessingEnvImpl");
if (eclipseImplClass.isInstance(env)) {
Method getJavaProject = eclipseImplClass.getMethod("getJavaProject");
Object javaProject = getJavaProject.invoke(env);
Class aptConfigClass = cl.loadClass("org.eclipse.jdt.apt.core.util.AptConfig");
Class javaProjectClass = cl.loadClass("org.eclipse.jdt.core.IJavaProject");
Method getProcessorOptionsMethod = aptConfigClass.getMethod("getProcessorOptions", javaProjectClass);
Map options = (Map)getProcessorOptionsMethod.invoke(null, javaProject);
log.info("Retrieved options " + options);
//
String sp = options.get("-sourcepath");
log.info("Found sourcepath " + sp);
if (sp != null) {
// We take the first value
Spliterator split = new Spliterator(sp, PATH_SEPARATOR_CHAR);
if (split.hasNext()) {
File root = new File(split.next());
if (root.isDirectory()) {
sourcePath = new DiskFileSystem(root);
}
}
}
// Building service class loader, this works better in eclipse specially with m2e and
// the externally loaded plugins
String cp = options.get("-classpath");
log.info("Found classpath " + cp);
if (cp != null) {
ArrayList urls = new ArrayList();
for (String s : Spliterator.split(cp, PATH_SEPARATOR_CHAR)) {
File f = new File(s);
if (f.exists()) {
if (f.isFile() && f.getName().endsWith(".jar") || f.isDirectory()) {
urls.add(f.toURI().toURL());
}
}
}
serviceCL = new URLClassLoader(urls.toArray(new URL[urls.size()]), serviceCL);
}
}
}
catch (Exception ignore) {
}
//
log.info("Using processing tool " + tool);
log.info("Using processing " + env);
log.info("Using source path " + sourcePath);
//
this.env = env;
this.sourcePath = sourcePath;
this.tool = tool;
this.serviceCL = serviceCL;
this.resources = null;
}
// Various stuff ****************************************************************************************************
public void report(Diagnostic.Kind kind,
CharSequence msg,
Element e,
AnnotationMirror a,
AnnotationValue v) {
tool.report(env.getMessager(), kind, msg, e, a, v);
}
public ProcessingEnvironment getEnv() {
return env;
}
public boolean isCopyFromSourcesExternallyManaged() {
return tool.isCopyFromSourcesExternallyManaged();
}
public E get(ElementHandle handle) {
return handle.get(env);
}
public T executeWithin(ElementHandle element, Callable callable) throws ProcessingException {
return executeWithin(element.get(env), callable);
}
public T executeWithin(Element element, Callable callable) throws ProcessingException {
try {
return callable.call();
}
catch (ProcessingException e) {
if (e.getElement() != null) {
throw e;
}
else {
throw new ProcessingException(element, null, e.getMessages()).initCause(e);
}
}
catch (Exception e) {
throw new ProcessingException(element, UNEXPECTED_ERROR, e.getMessage()).initCause(e);
}
}
/** . */
private Map, DiskFileSystem> sourcePathMap = new HashMap, DiskFileSystem>();
/**
* Returns the source path, this may return null.
*
* @param context the package element related
* @return the source path
* @throws IllegalArgumentException if the package cannot be resolved
*/
public DiskFileSystem getSourcePath(ElementHandle.Package context) throws IllegalArgumentException {
PackageElement element = context.get(env);
if (element == null) {
throw new IllegalArgumentException("Package element cannot be resolved " + context);
}
if (sourcePath != null) {
log.info("Found eclipse source path " + sourcePath + " for package " + context.getPackageName());
return sourcePath;
}
else {
DiskFileSystem sourcePath = sourcePathMap.get(context);
if (sourcePath == null) {
try {
log.info("Trying to find a native file system for package " + context.getPackageName());
List annotations = element.getAnnotationMirrors();
if (annotations.size() > 0) {
log.info("Found package " + context.getPackageName() + " annotations " + annotations + " will use first one");
AnnotationMirror annotation = annotations.get(0);
ClassLoader cl = env.getClass().getClassLoader();
if (cl == null) {
cl = ClassLoader.getSystemClassLoader();
}
Class treesClass = cl.loadClass("com.sun.source.util.Trees");
Method instanceMethod = treesClass.getMethod("instance", ProcessingEnvironment.class);
Method getPathMethod = treesClass.getMethod("getPath", Element.class, AnnotationMirror.class);
Object trees = instanceMethod.invoke(null, env);
Object path = getPathMethod.invoke(trees, element, annotation);
if (path != null) {
Method getCompilationUnitMethod = path.getClass().getMethod("getCompilationUnit");
Object cu = getCompilationUnitMethod.invoke(path);
Method getSourceFileMethod = cu.getClass().getMethod("getSourceFile");
JavaFileObject file = (JavaFileObject)getSourceFileMethod.invoke(cu);
URI uri = file.toUri();
log.info("Resolved uri " + uri + " for package " + context.getPackageName());
File f = new File(uri.getPath());
if (f.exists() && f.isFile()) {
File dir = f.getParentFile().getParentFile();
javax.lang.model.element.Name name = element.getQualifiedName();
for (int i = 0;i < name.length();i++) {
if (name.charAt(i) == '.') {
dir = dir.getParentFile();
}
}
sourcePathMap.put(context, sourcePath = new DiskFileSystem(dir));
}
} else {
log.info("No path object for package " + context.getPackageName());
}
}
else {
log.info("Package " + context.getPackageName() + " is not annotated (does not make sense)");
}
}
catch (Exception e) {
log.info("Could not resolve package " + context, e);
}
}
else {
log.info("Found cached source path " + sourcePath.getDescription() + " for package " + context.getPackageName());
}
return sourcePath;
}
}
/**
* Resolve a resource from the provided context and path.
*
* @param context the context of the application that will help to resolve the path source code
* @param path the path of the resource to resolve
* @return the resolved resource or null if it cannot be determined
* @throws NullPointerException if any argument is null
* @throws IllegalArgumentException if the context package is not valid
*/
public FileObject resolveResourceFromSourcePath(ElementHandle.Package context, Path.Absolute path) throws NullPointerException, IllegalArgumentException {
return resolveResourceFromSourcePath(context, FileKey.newName(path));
}
public FileObject resolveResourceFromSourcePath(ElementHandle.Package context, FileKey key) throws NullPointerException, IllegalArgumentException {
return resolveResourceFromSourcePath(context, Name.parse(key.packageFQN), key.name);
}
/**
* Resolve a resource from the provided context and key.
*
* @param context the context of the application that will help to resolve the path source code
* @param pkg the base package for the resolution
* @param relativeName the relative name
* @return the resolved resource or null if it cannot be determined
* @throws NullPointerException if any argument is null
* @throws IllegalArgumentException if the context package is not valid
*/
public FileObject resolveResourceFromSourcePath(
ElementHandle.Package context,
Name pkg,
CharSequence relativeName) throws NullPointerException, IllegalArgumentException {
if (context == null) {
throw new NullPointerException("No null package accepted");
}
if (pkg == null) {
throw new NullPointerException("No null pkg accepted");
}
if (relativeName == null) {
throw new NullPointerException("No null relativeName accepted");
}
String coordinates = "pkg=" + pkg + " relativeName=" + relativeName;
ReadFileSystem sourcePath = getSourcePath(context);
if (sourcePath != null) {
log.info("Attempt to resolve " + coordinates + " from source path");
try {
File f = sourcePath.getPath(pkg);
if (f != null) {
f = new File(f, relativeName.toString());
if (f.exists() && f.isFile()) {
log.info("Resolved " + coordinates + " to " + f.getAbsolutePath());
return new JavaFileObjectImpl(StandardLocation.SOURCE_PATH, FileKey.newResourceName(pkg.toString(), relativeName.toString()), sourcePath, f);
} else {
log.info("Resolving " + coordinates + " from source path does not exists " + f.getAbsolutePath());
}
}
else {
log.info("Resolving " + coordinates + " from source path gave no result");
}
}
catch (IOException e) {
log.info("Could not resolve " + coordinates + " from source path", e);
}
}
else {
for (StandardLocation location : RESOURCE_LOCATIONS) {
try {
log.info("Attempt to resolve " + coordinates + " from " + location.getName());
FileObject resource = doGetResource(location, pkg, relativeName);
if (resource != null && resource.getLastModified() > 0) {
return resource;
}
}
catch (Exception e) {
log.info("Could not resolve resource " + coordinates + " from " + location.getName(), e);
}
}
}
return null;
}
/**
* Resolve a resource from the provided context and path.
*
* @param context the context of the application that will help to resolve the path source code
* @param path the path of the resource to resolve
* @return the resolved resource or null if it cannot be determined
* @throws NullPointerException if any argument is null
* @throws IllegalArgumentException if the context package is not valid
*/
public FileObject resolveResourceFromClassPath(ElementHandle.Package context, Path.Absolute path) throws NullPointerException, IllegalArgumentException {
return resolveResourceFromClassPath(context, FileKey.newName(path));
}
/**
* Resolve a resource from the provided context and key.
*
* @param context the context of the application that will help to resolve the path source code
* @param key the key of the resource to resolve
* @return the resolved resource or null if it cannot be determined
* @throws NullPointerException if any argument is null
* @throws IllegalArgumentException if the context package is not valid
*/
public FileObject resolveResourceFromClassPath(ElementHandle.Package context, FileKey key) throws NullPointerException, IllegalArgumentException {
if (context == null) {
throw new NullPointerException("No null package accepted");
}
if (key == null) {
throw new NullPointerException("No null path accepted");
}
try {
log.info("Attempt to resolve " + key + " from classpath");
Filer classPath = env.getFiler();
FileObject object = classPath.getResource(StandardLocation.CLASS_PATH, key.packageFQN, key.name);
if (object != null && object.getLastModified() > 0) {
return object;
}
}
catch (IOException e) {
log.info("Could not resolve " + key + " from classpath", e);
}
//
return null;
}
/**
* Load a service, this is a replacement method for {@link ServiceLoader#load(Class, ClassLoader)}.
*
* @param service the service class to load
* @param the service generic type
* @return an iterable of the loaded services
* @throws NullPointerException if the service argument is null
*/
public Iterable loadServices(Class service) throws NullPointerException {
if (service == null) {
throw new NullPointerException("No null service class accepted");
}
log.info("Loading services implementation of " + service.getName());
try {
return Tools.list(ServiceLoader.load(service, serviceCL));
}
catch (ServiceConfigurationError e) {
log.info("Could not load service for service " + service.getName(), e);
return Collections.emptyList();
}
}
// Types implementation *********************************************************************************************
public Element asElement(TypeMirror t) {
return env.getTypeUtils().asElement(t);
}
public boolean isSameType(TypeMirror t1, TypeMirror t2) {
return env.getTypeUtils().isSameType(t1, t2);
}
public boolean isSubtype(TypeMirror t1, TypeMirror t2) {
return env.getTypeUtils().isSubtype(t1, t2);
}
public boolean isAssignable(TypeMirror t1, TypeMirror t2) {
return env.getTypeUtils().isAssignable(t1, t2);
}
public boolean contains(TypeMirror t1, TypeMirror t2) {
return env.getTypeUtils().contains(t1, t2);
}
public boolean isSubsignature(ExecutableType m1, ExecutableType m2) {
return env.getTypeUtils().isSubsignature(m1, m2);
}
public List directSupertypes(TypeMirror t) {
return env.getTypeUtils().directSupertypes(t);
}
public TypeMirror erasure(TypeMirror t) {
return env.getTypeUtils().erasure(t);
}
public TypeElement boxedClass(PrimitiveType p) {
return env.getTypeUtils().boxedClass(p);
}
public PrimitiveType unboxedType(TypeMirror t) {
return env.getTypeUtils().unboxedType(t);
}
public TypeMirror capture(TypeMirror t) {
return env.getTypeUtils().capture(t);
}
public PrimitiveType getPrimitiveType(TypeKind kind) {
return env.getTypeUtils().getPrimitiveType(kind);
}
public NullType getNullType() {
return env.getTypeUtils().getNullType();
}
public NoType getNoType(TypeKind kind) {
return env.getTypeUtils().getNoType(kind);
}
public ArrayType getArrayType(TypeMirror componentType) {
return env.getTypeUtils().getArrayType(componentType);
}
public WildcardType getWildcardType(TypeMirror extendsBound, TypeMirror superBound) {
return env.getTypeUtils().getWildcardType(extendsBound, superBound);
}
public DeclaredType getDeclaredType(TypeElement typeElem, TypeMirror... typeArgs) {
return env.getTypeUtils().getDeclaredType(typeElem, typeArgs);
}
public DeclaredType getDeclaredType(DeclaredType containing, TypeElement typeElem, TypeMirror... typeArgs) {
return env.getTypeUtils().getDeclaredType(containing, typeElem, typeArgs);
}
public TypeMirror asMemberOf(DeclaredType containing, Element element) {
return env.getTypeUtils().asMemberOf(containing, element);
}
public String getLiteralName(TypeMirror typeMirror) {
TypeMirror erasedParameterTypeMirror = erasure(typeMirror);
CharSequence typeLiteral = erasedParameterTypeMirror.toString();
int index = Tools.indexOf(typeLiteral, '<', 0);
if (index >= 0) {
// In Eclipse java.util.List generates java.util.List
// so we must remove this to get a usable literal name
return typeLiteral.subSequence(0, index).toString();
} else {
return typeLiteral.toString();
}
}
// Elements implementation ******************************************************************************************
public PackageElement getPackageElement(CharSequence name) {
return env.getElementUtils().getPackageElement(name);
}
public TypeElement getTypeElement(CharSequence name) {
return env.getElementUtils().getTypeElement(name);
}
public Map getElementValuesWithDefaults(AnnotationMirror a) {
return env.getElementUtils().getElementValuesWithDefaults(a);
}
public String getDocComment(Element e) {
return env.getElementUtils().getDocComment(e);
}
public boolean isDeprecated(Element e) {
return env.getElementUtils().isDeprecated(e);
}
public javax.lang.model.element.Name getBinaryName(TypeElement type) {
return env.getElementUtils().getBinaryName(type);
}
public PackageElement getPackageOf(Element type) {
return env.getElementUtils().getPackageOf(type);
}
public List getAllMembers(TypeElement type) {
return env.getElementUtils().getAllMembers(type);
}
public List getAllAnnotationMirrors(Element e) {
return env.getElementUtils().getAllAnnotationMirrors(e);
}
public boolean hides(Element hider, Element hidden) {
return env.getElementUtils().hides(hider, hidden);
}
public boolean overrides(ExecutableElement overrider, ExecutableElement overridden, TypeElement type) {
return env.getElementUtils().overrides(overrider, overridden, type);
}
public String getConstantExpression(Object value) {
return env.getElementUtils().getConstantExpression(value);
}
public void printElements(Writer w, Element... elements) {
env.getElementUtils().printElements(w, elements);
}
public javax.lang.model.element.Name getName(CharSequence cs) {
return env.getElementUtils().getName(cs);
}
// Filer implementation *********************************************************************************************
public JavaFileObject createSourceFile(Name name, Element... originatingElements) throws IOException {
return createSourceFile((CharSequence)name, originatingElements);
}
/**
* @inheritDoc
* @throws IllegalArgumentException if the originating element contains a null value
*/
public JavaFileObject createSourceFile(CharSequence name, Element... originatingElements) throws IOException, IllegalArgumentException {
// Gard against null element (java compiler is OK but ecj is not)
for (Object originatingElement : originatingElements) {
if (originatingElement == null) {
throw new IllegalArgumentException("Originating elements contains a null element");
}
}
log.info("Creating source file for name=" + name + " elements=" + Arrays.asList(originatingElements));
return env.getFiler().createSourceFile(name, originatingElements);
}
/**
* @inheritDoc
* @throws IllegalArgumentException if the originating element contains a null value
*/
public JavaFileObject createClassFile(CharSequence name, Element... originatingElements) throws IOException, IllegalArgumentException {
// Gard against null element (java compiler is OK but ecj is not)
for (Object originatingElement : originatingElements) {
if (originatingElement == null) {
throw new IllegalArgumentException("Originating elements contains a null element");
}
}
log.info("Creating class file for name=" + name + " elements=" + Arrays.asList(originatingElements));
return env.getFiler().createClassFile(name, originatingElements);
}
public FileObject createResource(JavaFileManager.Location location, Path.Absolute path, Element... originatingElements) throws IOException {
return createResource(location, path.getDirs(), path.getSimpleName(), originatingElements);
}
public FileObject createResource(JavaFileManager.Location location, FileKey key, Element... originatingElements) throws IOException {
return createResource(location, key.packageFQN, key.name, originatingElements);
}
public FileObject createResource(JavaFileManager.Location location, CharSequence pkg, CharSequence relativeName, Element... originatingElements) throws IOException {
return createResource(location, Name.parse(pkg), relativeName, originatingElements);
}
public FileObject createResource(JavaFileManager.Location location, Name pkg, CharSequence relativeName, Element... originatingElements) throws IOException {
if (tool.getOverwriteReadingResource()) {
Key key = new Key(location, pkg, relativeName.toString());
FileObject resource = resources != null ? resources.get(key) : null;
if (resource == null) {
log.info("Creating resource file for location=" + location + " pkg=" + pkg + " relativeName=" + relativeName + " elements=" + Arrays.asList(originatingElements));
resource = env.getFiler().createResource(location, pkg, relativeName, originatingElements);
if (resources == null) {
resources = new HashMap();
}
resources.put(new Key(location, pkg, relativeName.toString()), resource);
}
return resource;
} else {
return env.getFiler().createResource(location, pkg, relativeName, originatingElements);
}
}
public FileObject getResource(JavaFileManager.Location location, Path.Absolute path) throws IOException {
return getResource(location, path.getDirs(), path.getSimpleName());
}
public FileObject getResource(JavaFileManager.Location location, FileKey key) throws IOException {
return getResource(location, key.packageFQN, key.name);
}
public FileObject getResource(JavaFileManager.Location location, CharSequence pkg, CharSequence relativeName) {
return getResource(location, Name.parse(pkg), relativeName);
}
private FileObject doGetResource(JavaFileManager.Location location, CharSequence pkg, CharSequence relativeName) {
try {
return env.getFiler().getResource(location, pkg, relativeName);
}
catch (IOException e) {
// Likely to happen in ECJ
return null;
}
catch (RuntimeException e) {
if (e.getClass().getName().equals("com.sun.tools.javac.util.ClientCodeException") && e.getCause() instanceof NullPointerException) {
// com.sun.tools.javac.util.ClientCodeException: java.lang.NullPointerException
// Bug in java compiler >= 1.7 for file not found
// at com.sun.tools.javac.util.ClientCodeException: java.lang.NullPointerException
// at com.sun.tools.javac.api.ClientCodeWrapper$WrappedJavaFileManager.getFileForInput(ClientCodeWrapper.java:307)
// at com.sun.tools.javac.processing.JavacFiler.getResource(JavacFiler.java:472)
return null;
} else {
throw e;
}
}
}
public FileObject getResource(JavaFileManager.Location location, Name pkg, CharSequence relativeName) {
Key key = new Key(location, pkg, relativeName.toString());
String coordinates = "location=" + location + " pkg=" + pkg + " relativeName=" + relativeName;
FileObject resource = resources != null ? resources.get(key) : null;
if (resource == null) {
resource = doGetResource(location, pkg, relativeName);
if (resource != null) {
debug("Resolved resolved resource " + coordinates + " from filer");
if (resource.getLastModified() > 0) {
if (resources == null) {
resources = new HashMap();
}
debug("Caching locally resolved resource " + coordinates + " from filer");
resources.put(key, resource);
} else {
resource = null;
}
} else {
debug("Could not resolved resource " + coordinates + " from filer");
}
}
return resource;
}
public Map getOptions() {
return env.getOptions();
}
// Logger implementation
@Override
protected void send(Level level, CharSequence msg, Throwable t) {
log.log(level, msg, t);
}
/**
* A cache key.
*/
private static final class Key {
final JavaFileManager.Location location;
final Name pkg;
final String relativeName;
private Key(JavaFileManager.Location location, Name pkg, String relativeName) {
this.location = location;
this.pkg = pkg;
this.relativeName = relativeName;
}
@Override
public int hashCode() {
return 13 * (13 * location.hashCode() + pkg.hashCode()) + relativeName.hashCode();
}
@Override
public boolean equals(Object obj) {
if (obj == this) {
return true;
} else if (obj instanceof Key) {
Key that = (Key)obj;
return location.equals(that.location) && pkg.equals(that.pkg) && relativeName.equals(that.relativeName);
} else {
return false;
}
}
}
}
