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/*
* Copyright © 2010 Reinier Zwitserloot, Roel Spilker and Robbert Jan Grootjans.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
package lombok.javac.handlers;
import static lombok.javac.handlers.JavacHandlerUtil.*;
import java.lang.annotation.Annotation;
import lombok.core.AnnotationValues;
import lombok.javac.JavacAnnotationHandler;
import lombok.javac.JavacNode;
import lombok.javac.handlers.JavacHandlerUtil.MemberExistsResult;
import org.mangosdk.spi.ProviderFor;
import com.sun.tools.javac.code.Flags;
import com.sun.tools.javac.tree.TreeMaker;
import com.sun.tools.javac.tree.JCTree.JCAnnotation;
import com.sun.tools.javac.tree.JCTree.JCClassDecl;
import com.sun.tools.javac.tree.JCTree.JCExpression;
import com.sun.tools.javac.tree.JCTree.JCFieldAccess;
import com.sun.tools.javac.tree.JCTree.JCMethodInvocation;
import com.sun.tools.javac.tree.JCTree.JCVariableDecl;
import com.sun.tools.javac.util.List;
import com.sun.tools.javac.util.Name;
public class HandleLog {
private HandleLog() {
throw new UnsupportedOperationException();
}
public static boolean processAnnotation(LoggingFramework framework, AnnotationValues<?> annotation, JavacNode annotationNode) {
markAnnotationAsProcessed(annotationNode, framework.getAnnotationClass());
JavacNode typeNode = annotationNode.up();
switch (typeNode.getKind()) {
case TYPE:
if ((((JCClassDecl)typeNode.get()).mods.flags & Flags.INTERFACE)!= 0) {
annotationNode.addError("@Log is legal only on classes and enums.");
return true;
}
if (fieldExists("log", typeNode)!= MemberExistsResult.NOT_EXISTS) {
annotationNode.addWarning("Field 'log' already exists.");
return true;
}
JCFieldAccess loggingType = selfType(typeNode);
createField(framework, typeNode, loggingType);
return true;
default:
annotationNode.addError("@Log is legal only on types.");
return true;
}
}
private static JCFieldAccess selfType(JavacNode typeNode) {
TreeMaker maker = typeNode.getTreeMaker();
Name name = ((JCClassDecl) typeNode.get()).name;
return maker.Select(maker.Ident(name), typeNode.toName("class"));
}
private static boolean createField(LoggingFramework framework, JavacNode typeNode, JCFieldAccess loggingType) {
TreeMaker maker = typeNode.getTreeMaker();
// private static final <loggerType> log = <factoryMethod>(<parameter>);
JCExpression loggerType = chainDotsString(maker, typeNode, framework.getLoggerTypeName());
JCExpression factoryMethod = chainDotsString(maker, typeNode, framework.getLoggerFactoryMethodName());
JCExpression loggerName = framework.createFactoryParameter(typeNode, loggingType);
JCMethodInvocation factoryMethodCall = maker.Apply(List.<JCExpression>nil(), factoryMethod, List.<JCExpression>of(loggerName));
JCVariableDecl fieldDecl = maker.VarDef(
maker.Modifiers(Flags.PRIVATE | Flags.FINAL | Flags.STATIC),
typeNode.toName("log"), loggerType, factoryMethodCall);
injectField(typeNode, fieldDecl);
return true;
}
/**
* Handles the {@link lombok.extern.apachecommons.CommonsLog} annotation for javac.
*/
@ProviderFor(JavacAnnotationHandler.class)
public static class HandleCommonsLog implements JavacAnnotationHandler<lombok.extern.apachecommons.CommonsLog> {
@Override public boolean handle(AnnotationValues<lombok.extern.apachecommons.CommonsLog> annotation, JCAnnotation ast, JavacNode annotationNode) {
return processAnnotation(LoggingFramework.COMMONS, annotation, annotationNode);
}
@Override public boolean isResolutionBased() {
return false;
}
}
/**
* Handles the {@link lombok.extern.java.Log} annotation for javac.
*/
@ProviderFor(JavacAnnotationHandler.class)
public static class HandleJulLog implements JavacAnnotationHandler<lombok.extern.java.Log> {
@Override public boolean handle(AnnotationValues<lombok.extern.java.Log> annotation, JCAnnotation ast, JavacNode annotationNode) {
return processAnnotation(LoggingFramework.JUL, annotation, annotationNode);
}
@Override public boolean isResolutionBased() {
return false;
}
}
/**
* Handles the {@link lombok.extern.log4j.Log4j} annotation for javac.
*/
@ProviderFor(JavacAnnotationHandler.class)
public static class HandleLog4jLog implements JavacAnnotationHandler<lombok.extern.log4j.Log4j> {
@Override public boolean handle(AnnotationValues<lombok.extern.log4j.Log4j> annotation, JCAnnotation ast, JavacNode annotationNode) {
return processAnnotation(LoggingFramework.LOG4J, annotation, annotationNode);
}
@Override public boolean isResolutionBased() {
return false;
}
}
/**
* Handles the {@link lombok.extern.slf4j.Slf4j} annotation for javac.
*/
@ProviderFor(JavacAnnotationHandler.class)
public static class HandleSlf4jLog implements JavacAnnotationHandler<lombok.extern.slf4j.Slf4j> {
@Override public boolean handle(AnnotationValues<lombok.extern.slf4j.Slf4j> annotation, JCAnnotation ast, JavacNode annotationNode) {
return processAnnotation(LoggingFramework.SLF4J, annotation, annotationNode);
}
@Override public boolean isResolutionBased() {
return false;
}
}
enum LoggingFramework {
// private static final org.apache.commons.logging.Log log = org.apache.commons.logging.LogFactory.getLog(TargetType.class);
COMMONS(lombok.extern.apachecommons.CommonsLog.class, "org.apache.commons.logging.Log", "org.apache.commons.logging.LogFactory.getLog"),
// private static final java.util.logging.Logger log = java.util.logging.Logger.getLogger(TargetType.class.getName());
JUL(lombok.extern.java.Log.class, "java.util.logging.Logger", "java.util.logging.Logger.getLogger") {
@Override public JCExpression createFactoryParameter(JavacNode typeNode, JCFieldAccess loggingType) {
TreeMaker maker = typeNode.getTreeMaker();
JCExpression method = maker.Select(loggingType, typeNode.toName("getName"));
return maker.Apply(List.<JCExpression>nil(), method, List.<JCExpression>nil());
}
},
// private static final org.apache.log4j.Logger log = org.apache.log4j.Logger.getLogger(TargetType.class);
LOG4J(lombok.extern.log4j.Log4j.class, "org.apache.log4j.Logger", "org.apache.log4j.Logger.getLogger"),
// private static final org.slf4j.Logger log = org.slf4j.LoggerFactory.getLogger(TargetType.class);
SLF4J(lombok.extern.slf4j.Slf4j.class, "org.slf4j.Logger", "org.slf4j.LoggerFactory.getLogger"),
;
private final Class<? extends Annotation> annotationClass;
private final String loggerTypeName;
private final String loggerFactoryName;
LoggingFramework(Class<? extends Annotation> annotationClass, String loggerTypeName, String loggerFactoryName) {
this.annotationClass = annotationClass;
this.loggerTypeName = loggerTypeName;
this.loggerFactoryName = loggerFactoryName;
}
final Class<? extends Annotation> getAnnotationClass() {
return annotationClass;
}
final String getLoggerTypeName() {
return loggerTypeName;
}
final String getLoggerFactoryMethodName() {
return loggerFactoryName;
}
JCExpression createFactoryParameter(JavacNode typeNode, JCFieldAccess loggingType) {
return loggingType;
}
}
}
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