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Copyright (C) 2010-2012 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;
 
 
 
 
 
 public class TraceProcessor implements ElementProcessor {
 
 	private final APTCodeModelHelper helper = new APTCodeModelHelper();
 
 	public Class<? extends AnnotationgetTarget() {
 		return Trace.class;
 	}
 
 	public void process(Element elementJCodeModel codeModelEBeansHolder activitiesHolder) {
 		EBeanHolder holder = activitiesHolder.getEnclosingEBeanHolder(element);
 		Classes classes = holder.classes();
 		ExecutableElement executableElement = (ExecutableElementelement;
 
 		String tag = extractTag(executableElement);
 		int level = executableElement.getAnnotation(Trace.class).level();
 
 		JMethod method = .overrideAnnotatedMethod(executableElementholder);
 
 		JBlock previousMethodBody = .removeBody(method);
 
 		JBlock methodBody = method.body();
 
 		JInvocation isLoggableInvocation = classes.LOG.staticInvoke("isLoggable");
 		isLoggableInvocation.arg(JExpr.lit(tag)).arg(logLevelFromInt(levelclasses.LOG));
 
 		JConditional ifStatement = methodBody._if(isLoggableInvocation);
 
 		JInvocation currentTimeInvoke = classes.SYSTEM.staticInvoke("currentTimeMillis");
 		JBlock _thenBody = ifStatement._then();
 		JVar startDeclaration = _thenBody.decl(codeModel.LONG"start"currentTimeInvoke);
 
 		String methodName = "[" + element.toString() + "]";
 
 		// Log In
 		String logMethodName = logMethodNameFromLevel(level);
 		JInvocation logEnterInvoke = classes.LOG.staticInvoke(logMethodName);
 		logEnterInvoke.arg(tag);
 
 		JExpression enterMessage = JExpr.lit("Entering " + methodName);
 		logEnterInvoke.arg(enterMessage);
 		_thenBody.add(logEnterInvoke);
 
 		JTryBlock tryBlock = _thenBody._try();
 
 		tryBlock.body().add(previousMethodBody);
 
 		JBlock finallyBlock = tryBlock._finally();
 
 		JVar durationDeclaration = finallyBlock.decl(codeModel.LONG"duration"currentTimeInvoke.minus(startDeclaration));
 
 		JInvocation logExitInvoke = classes.LOG.staticInvoke(logMethodName);
 		logExitInvoke.arg(tag);
 
 		JExpression exitMessage = JExpr.lit("Exiting " + methodName + ", duration in ms: ").plus(durationDeclaration);
 		logExitInvoke.arg(exitMessage);
 		finallyBlock.add(logExitInvoke);
 
 		JBlock elseBlock = ifStatement._else();
		elseBlock.add(previousMethodBody);
	}
	private String logMethodNameFromLevel(int level) {
		switch (level) {
		case .:
			return "d";
		case .:
			return "v";
		case .:
			return "i";
		case .:
			return "w";
		case .:
			return "e";
		default:
			throw new IllegalArgumentException("Unrecognized Log level : " + level);
		}
	}
	private JFieldRef logLevelFromInt(int levelJClass logClass) {
		switch (level) {
		case .:
			return logClass.staticRef("DEBUG");
		case .:
			return logClass.staticRef("VERBOSE");
		case .:
			return logClass.staticRef("INFO");
		case .:
			return logClass.staticRef("WARN");
		case .:
			return logClass.staticRef("ERROR");
		default:
			throw new IllegalArgumentException("Unrecognized log level. Given value:" + level);
		}
	}
	private String extractTag(Element element) {
		Trace annotation = element.getAnnotation(Trace.class);
		String tag = annotation.tag();
		if (..equals(tag)) {
		}
		if (tag.length() > 23) {
			tag = tag.substring(0, 23);
		}
		return tag;
	}
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