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Bug360834TestLanguageInjectorProvider.java
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Bug360834TestLanguageInjectorProvider.java
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/*******************************************************************************
* Copyright (c) 2010, 2024 itemis AG (http://www.itemis.eu) and others.
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License 2.0 which is available at
* http://www.eclipse.org/legal/epl-2.0.
*
* SPDX-License-Identifier: EPL-2.0
*******************************************************************************/
package org.eclipse.xtext.ui.tests.editor.contentassist.tests;
import com.google.inject.Guice;
import com.google.inject.Injector;
import org.eclipse.xtext.testing.GlobalRegistries;
import org.eclipse.xtext.testing.GlobalRegistries.GlobalStateMemento;
import org.eclipse.xtext.testing.IInjectorProvider;
import org.eclipse.xtext.testing.IRegistryConfigurator;
import org.eclipse.xtext.ui.tests.editor.contentassist.Bug360834TestLanguageRuntimeModule;
import org.eclipse.xtext.ui.tests.editor.contentassist.Bug360834TestLanguageStandaloneSetup;
public class Bug360834TestLanguageInjectorProvider implements IInjectorProvider, IRegistryConfigurator {
protected GlobalStateMemento stateBeforeInjectorCreation;
protected GlobalStateMemento stateAfterInjectorCreation;
protected Injector injector;
static {
GlobalRegistries.initializeDefaults();
}
@Override
public Injector getInjector() {
if (injector == null) {
this.injector = internalCreateInjector();
stateAfterInjectorCreation = GlobalRegistries.makeCopyOfGlobalState();
}
return injector;
}
protected Injector internalCreateInjector() {
return new Bug360834TestLanguageStandaloneSetup() {
@Override
public Injector createInjector() {
return Guice.createInjector(createRuntimeModule());
}
}.createInjectorAndDoEMFRegistration();
}
protected Bug360834TestLanguageRuntimeModule createRuntimeModule() {
// make it work also with Maven/Tycho and OSGI
// see https://bugs.eclipse.org/bugs/show_bug.cgi?id=493672
// allows for bindClassLoaderToInstance to get the class loader of the bundle
// containing the instance of the injector provider (possibly inherited)
return new Bug360834TestLanguageRuntimeModule() {
@Override
public ClassLoader bindClassLoaderToInstance() {
return Bug360834TestLanguageInjectorProvider.this.getClass()
.getClassLoader();
}
};
}
@Override
public void restoreRegistry() {
stateBeforeInjectorCreation.restoreGlobalState();
stateBeforeInjectorCreation = null;
}
@Override
public void setupRegistry() {
stateBeforeInjectorCreation = GlobalRegistries.makeCopyOfGlobalState();
if (injector == null) {
getInjector();
}
stateAfterInjectorCreation.restoreGlobalState();
}
}