/*
* Copyright 2003-2016 JetBrains s.r.o.
*
* 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 jetbrains.mps.library.contributor;
import com.intellij.ide.plugins.IdeaPluginDescriptor;
import com.intellij.ide.plugins.PluginManager;
import com.intellij.openapi.extensions.PluginId;
import jetbrains.mps.LanguageLibrary;
import org.apache.log4j.LogManager;
import org.apache.log4j.Logger;
import org.jetbrains.annotations.NotNull;
import java.io.File;
import java.io.IOException;
import java.util.HashSet;
import java.util.Set;
/**
* Contributes user libraries from the extension point in {@link LanguageLibrary#EP_LANGUAGE_LIBS}
*/
public final class PluginLibraryContributor implements LibraryContributor {
private static final Logger LOG = LogManager.getLogger(PluginLibraryContributor.class);
private final jetbrains.mps.vfs.openapi.FileSystem myFileSystem;
public PluginLibraryContributor(jetbrains.mps.vfs.openapi.FileSystem fileSystem) {
myFileSystem = fileSystem;
}
@NotNull
private LibDescriptor createLibDescriptor(LanguageLibrary library) throws IOException {
PluginId pluginId = library.getPluginDescriptor().getPluginId();
if (library.dir == null) {
throw new IllegalStateException("Library attribute 'dir' should be non-empty: plugin=" + pluginId.getIdString());
}
IdeaPluginDescriptor plugin = PluginManager.getPlugin(pluginId);
if (plugin == null) {
throw new IllegalStateException("Plugin could not be found: plugin=" + pluginId.getIdString());
}
final String libraryPath = new File(plugin.getPath(), library.dir).getCanonicalPath();
return new LibDescriptor(myFileSystem.getFile(libraryPath), plugin.getPluginClassLoader());
}
@Override
public Set<LibDescriptor> getPaths() {
final LanguageLibrary[] libraries = LanguageLibrary.EP_LANGUAGE_LIBS.getExtensions();
Set<LibDescriptor> result = new HashSet<LibDescriptor>();
for (final LanguageLibrary library : libraries) {
try {
LibDescriptor libDescriptor = createLibDescriptor(library);
result.add(libDescriptor);
} catch (Throwable t) {
LOG.error("Error instantiating language library", t);
}
}
return result;
}
@Override
public boolean hiddenLanguages() {
return false;
}
}