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Copy pathBackgroundProcessor.java
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108 lines (84 loc) · 3.91 KB
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/**
* Copyright (C) 2010-2011 Pierre-Yves Ricau (py.ricau at gmail.com)
*
* 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 com.googlecode.androidannotations.processing;
import java.lang.annotation.Annotation;
import java.util.ArrayList;
import java.util.List;
import javax.lang.model.element.Element;
import javax.lang.model.element.ExecutableElement;
import javax.lang.model.element.VariableElement;
import com.googlecode.androidannotations.annotations.Background;
import com.googlecode.androidannotations.api.BackgroundExecutor;
import com.googlecode.androidannotations.helper.APTCodeModelHelper;
import com.sun.codemodel.JBlock;
import com.sun.codemodel.JCatchBlock;
import com.sun.codemodel.JClass;
import com.sun.codemodel.JClassAlreadyExistsException;
import com.sun.codemodel.JCodeModel;
import com.sun.codemodel.JDefinedClass;
import com.sun.codemodel.JExpr;
import com.sun.codemodel.JExpression;
import com.sun.codemodel.JInvocation;
import com.sun.codemodel.JMethod;
import com.sun.codemodel.JMod;
import com.sun.codemodel.JTryBlock;
import com.sun.codemodel.JVar;
public class BackgroundProcessor implements ElementProcessor {
private final APTCodeModelHelper helper = new APTCodeModelHelper();
@Override
public Class<? extends Annotation> getTarget() {
return Background.class;
}
@Override
public void process(Element element, JCodeModel codeModel, ActivitiesHolder activitiesHolder) throws JClassAlreadyExistsException {
ActivityHolder holder = activitiesHolder.getEnclosingActivityHolder(element);
// Method
String backgroundMethodName = element.getSimpleName().toString();
JMethod backgroundMethod = holder.activity.method(JMod.PUBLIC, codeModel.VOID, backgroundMethodName);
backgroundMethod.annotate(Override.class);
// Method parameters
List<JVar> parameters = new ArrayList<JVar>();
ExecutableElement executableElement = (ExecutableElement) element;
for (VariableElement parameter : executableElement.getParameters()) {
String parameterName = parameter.getSimpleName().toString();
JClass parameterClass = helper.typeMirrorToJClass(parameter.asType(), holder);
JVar param = backgroundMethod.param(JMod.FINAL, parameterClass, parameterName);
parameters.add(param);
}
JDefinedClass anonymousRunnableClass = codeModel.anonymousClass(Runnable.class);
JMethod runMethod = anonymousRunnableClass.method(JMod.PUBLIC, codeModel.VOID, "run");
runMethod.annotate(Override.class);
JBlock runMethodBody = runMethod.body();
JTryBlock runTry = runMethodBody._try();
JExpression activitySuper = holder.activity.staticRef("super");
JInvocation superCall = runTry.body().invoke(activitySuper, backgroundMethod);
for (JVar param : parameters) {
superCall.arg(param);
}
JCatchBlock runCatch = runTry._catch(holder.refClass(RuntimeException.class));
JVar exceptionParam = runCatch.param("e");
JClass logClass = holder.refClass("android.util.Log");
JInvocation errorInvoke = logClass.staticInvoke("e");
errorInvoke.arg(holder.activity.name());
errorInvoke.arg("A runtime exception was thrown while executing code in a background thread");
errorInvoke.arg(exceptionParam);
runCatch.body().add(errorInvoke);
JBlock backgroundBody = backgroundMethod.body();
JClass backgroundExecutorClass = codeModel.ref(BackgroundExecutor.class);
JInvocation executeCall = backgroundExecutorClass.staticInvoke("execute").arg(JExpr._new(anonymousRunnableClass));
backgroundBody.add(executeCall);
}
}