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Copy pathExtraProcessor.java
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93 lines (71 loc) · 3.26 KB
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/**
* Copyright (C) 2010-2011 eBusiness Information, Excilys Group
*
* 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 javax.lang.model.element.Element;
import com.googlecode.androidannotations.annotations.Extra;
import com.sun.codemodel.JBlock;
import com.sun.codemodel.JCatchBlock;
import com.sun.codemodel.JCodeModel;
import com.sun.codemodel.JExpr;
import com.sun.codemodel.JFieldRef;
import com.sun.codemodel.JInvocation;
import com.sun.codemodel.JMethod;
import com.sun.codemodel.JMod;
import com.sun.codemodel.JTryBlock;
import com.sun.codemodel.JType;
import com.sun.codemodel.JTypeVar;
import com.sun.codemodel.JVar;
public class ExtraProcessor implements ElementProcessor {
@Override
public Class<? extends Annotation> getTarget() {
return Extra.class;
}
@Override
public void process(Element element, JCodeModel codeModel, EBeansHolder activitiesHolder) {
Extra annotation = element.getAnnotation(Extra.class);
String extraKey = annotation.value();
String fieldName = element.getSimpleName().toString();
EBeanHolder holder = activitiesHolder.getEnclosingActivityHolder(element);
if (holder.cast == null) {
JType objectType = codeModel._ref(Object.class);
JMethod method = holder.eBean.method(JMod.PRIVATE, objectType, "cast_");
JTypeVar genericType = method.generify("T");
method.type(genericType);
JVar objectParam = method.param(objectType, "object");
method.annotate(SuppressWarnings.class).param("value", "unchecked");
method.body()._return(JExpr.cast(genericType, objectParam));
holder.cast = method;
}
JBlock methodBody = holder.beforeCreate.body();
if (holder.extras == null) {
holder.extras = methodBody.decl(holder.bundleClass, "extras_");
holder.extras.init(JExpr.invoke("getIntent").invoke("getExtras"));
holder.extrasNotNullBlock = methodBody._if(holder.extras.ne(JExpr._null()))._then();
}
JBlock ifContainsKey = holder.extrasNotNullBlock._if(JExpr.invoke(holder.extras, "containsKey").arg(extraKey))._then();
JTryBlock containsKeyTry = ifContainsKey._try();
JFieldRef extraField = JExpr.ref(fieldName);
containsKeyTry.body().assign(extraField, JExpr.invoke(holder.cast).arg(holder.extras.invoke("get").arg(extraKey)));
JCatchBlock containsKeyCatch = containsKeyTry._catch(holder.refClass(ClassCastException.class));
JVar exceptionParam = containsKeyCatch.param("e");
JInvocation errorInvoke = holder.refClass("android.util.Log").staticInvoke("e");
errorInvoke.arg(holder.eBean.name());
errorInvoke.arg("Could not cast extra to expected type, the field is left to its default value");
errorInvoke.arg(exceptionParam);
containsKeyCatch.body().add(errorInvoke);
}
}