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Eclipse Compiler for Java(TM)
/*******************************************************************************
* Copyright (c) 2017 IBM Corporation.
*
* 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:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.jdt.internal.compiler.tool;
import java.io.IOException;
import java.nio.file.Path;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
import javax.tools.JavaFileManager.Location;
import javax.tools.StandardLocation;
public class ModuleLocationHandler {
Map containers;
ModuleLocationHandler() {
this.containers = new HashMap<>();
}
public void newSystemLocation(Location loc, JrtFileSystem jrt) throws IOException {
SystemLocationContainer systemLocationWrapper = new SystemLocationContainer(StandardLocation.SYSTEM_MODULES, jrt);
this.containers.put(loc, systemLocationWrapper);
}
public void newOutputLocation(Location loc) {
OutputLocationContainer outputWrapper = new OutputLocationContainer(loc);
this.containers.put(loc, outputWrapper);
}
public LocationWrapper getLocation(Location loc, String moduleName) {
if (loc instanceof LocationWrapper) {
loc = ((LocationWrapper) loc).loc;
}
LocationContainer forwarder = this.containers.get(loc);
if (forwarder != null) {
return forwarder.get(moduleName);
}
return null;
}
public Location getLocation(Location loc, Path path) {
LocationContainer forwarder = this.containers.get(loc);
if (forwarder != null) {
return forwarder.get(path);
}
return null;
}
public LocationContainer getLocation(Location location) {
return this.containers.get(location);
}
private LocationContainer createNewContainer(Location loc) {
LocationContainer container = (loc == StandardLocation.CLASS_OUTPUT) ?
new OutputLocationContainer(loc) : new LocationContainer(loc);
this.containers.put(loc, container);
return container;
}
public void setLocation(Location location, Iterable paths) {
LocationContainer container = this.containers.get(location);
if (container == null) {
container = createNewContainer(location);
}
container.setPaths(paths);
}
public void setLocation(Location location, String moduleName, Iterable paths) {
LocationWrapper wrapper = null;
LocationContainer container = this.containers.get(location);
if (container != null) {
wrapper = container.get(moduleName);
} else {
container = createNewContainer(location);
}
if (wrapper == null) {
// module name can't be null
// TODO: Check unnamed modules can have their own module specific path - probably not
if (moduleName.equals("")) { //$NON-NLS-1$
wrapper = new LocationWrapper(location, location.isOutputLocation(), paths);
} else {
wrapper = new ModuleLocationWrapper(location, moduleName, location.isOutputLocation(), paths);
for (Path path : paths) {
container.put(path, wrapper);
}
}
} else {
wrapper.setPaths(paths);
}
container.put(moduleName, wrapper);
}
public Iterable> listLocationsForModules(Location location) {
LocationContainer locationContainer = this.containers.get(location);
if (locationContainer == null) {
return Collections.emptyList();
}
Set set = new HashSet<>(locationContainer.locationNames.values());
List> singletonList = Collections.singletonList(set);
return singletonList;
}
class LocationContainer extends LocationWrapper {
Map locationNames;
Map locationPaths;
LocationContainer(Location loc) {
super();
this.loc = loc;
this.locationNames = new HashMap<>();
this.locationPaths = new HashMap<>();
}
LocationWrapper get(String moduleName) {
return this.locationNames.get(moduleName);
}
void put(String moduleName, LocationWrapper impl) {
this.locationNames.put(moduleName, impl);
this.paths = null;
}
void put(Path path, LocationWrapper impl) {
this.locationPaths.put(path, impl);
this.paths = null;
}
Location get(Path path) {
return this.locationPaths.get(path);
}
@Override
void setPaths(Iterable paths) {
super.setPaths(paths);
this.clear();
}
@Override
public Iterable getPaths() {
if (this.paths != null)
return this.paths;
return this.locationPaths.keySet();
}
public void clear() {
this.locationNames.clear();
this.locationPaths.clear();
}
}
class SystemLocationContainer extends LocationContainer {
public SystemLocationContainer(Location loc, JrtFileSystem jrt) throws IOException {
super(loc);
jrt.initialize();
HashMap modulePathMap = jrt.modulePathMap;
Set keySet = modulePathMap.keySet();
for (String mod : keySet) {
Path path = jrt.file.toPath();
ModuleLocationWrapper wrapper = new ModuleLocationWrapper(loc, mod, false,
Collections.singletonList(path));
this.locationNames.put(mod, wrapper);
this.locationPaths.put(path, wrapper);
}
}
}
class OutputLocationContainer extends LocationContainer {
OutputLocationContainer(Location loc) {
super(loc);
}
@Override
void put(String moduleName, LocationWrapper impl) {
this.locationNames.put(moduleName, impl);
}
@Override
void put(Path path, LocationWrapper impl) {
this.locationPaths.put(path, impl);
}
}
public class LocationWrapper implements Location {
Location loc;
boolean output;
List paths;
LocationWrapper() {
}
public LocationWrapper(Location loc, boolean output, Iterable paths) {
this.loc = loc;
this.output = output;
setPaths(paths);
}
@Override
public String getName() {
return this.loc.getName();
}
@Override
public boolean isOutputLocation() {
return this.output;
}
public Iterable getPaths() {
return this.paths;
}
void setPaths(Iterable paths) {
if (paths == null) {
this.paths = null;
} else {
List newPaths = new ArrayList<>();
for (Path file : paths) {
newPaths.add(file);
}
this.paths = Collections.unmodifiableList(newPaths);
}
}
@Override
public String toString() {
return this.loc.toString() + "[]"; //$NON-NLS-1$
}
}
class ModuleLocationWrapper extends LocationWrapper {
String modName;
public ModuleLocationWrapper(Location loc, String mod, boolean output, Iterable paths) {
super(loc, output, paths);
this.modName = mod;
}
@Override
public String getName() {
return this.loc.getName() + "[" + this.modName + "]"; //$NON-NLS-1$//$NON-NLS-2$
}
@Override
public boolean isOutputLocation() {
return this.output;
}
@Override
public Iterable getPaths() {
return this.paths;
}
@Override
public String toString() {
return this.loc.toString() + "[" + this.modName + "]"; //$NON-NLS-1$//$NON-NLS-2$
}
}
public void close() {
Collection values = this.containers.values();
for (LocationContainer locationContainer : values) {
locationContainer.clear();
}
}
}