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/*
* Copyright © 2009 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.eclipse.handlers;
import static lombok.eclipse.Eclipse.fromQualifiedName;
import static lombok.eclipse.handlers.EclipseHandlerUtil.*;
import java.lang.reflect.Modifier;
import java.util.Arrays;
import lombok.core.AnnotationValues;
import lombok.core.AST.Kind;
import lombok.eclipse.Eclipse;
import lombok.eclipse.EclipseAnnotationHandler;
import lombok.eclipse.EclipseNode;
import lombok.eclipse.handlers.EclipseHandlerUtil.MemberExistsResult;
import lombok.slf4j.Log;
import org.eclipse.jdt.internal.compiler.ast.Annotation;
import org.eclipse.jdt.internal.compiler.ast.Expression;
import org.eclipse.jdt.internal.compiler.ast.FieldDeclaration;
import org.eclipse.jdt.internal.compiler.ast.MessageSend;
import org.eclipse.jdt.internal.compiler.ast.QualifiedNameReference;
import org.eclipse.jdt.internal.compiler.ast.QualifiedTypeReference;
import org.eclipse.jdt.internal.compiler.ast.TypeDeclaration;
import org.eclipse.jdt.internal.compiler.classfmt.ClassFileConstants;
import org.mangosdk.spi.ProviderFor;
/**
* Handles the {@code lombok.HandleSneakyThrows} annotation for eclipse.
*/
@ProviderFor(EclipseAnnotationHandler.class)
public class HandleSlf4jLog implements EclipseAnnotationHandler<Log> {
@Override public boolean handle(AnnotationValues<Log> annotation, Annotation source, EclipseNode annotationNode) {
String loggingClassName = annotation.getRawExpression("value");
if (loggingClassName == null) loggingClassName = "void.class";
if (!loggingClassName.endsWith(".class")) loggingClassName = loggingClassName + ".class";
EclipseNode owner = annotationNode.up();
switch (owner.getKind()) {
case TYPE:
TypeDeclaration typeDecl = null;
if (owner.get() instanceof TypeDeclaration) typeDecl = (TypeDeclaration) owner.get();
int modifiers = typeDecl == null ? 0 : typeDecl.modifiers;
boolean notAClass = (modifiers &
(ClassFileConstants.AccInterface | ClassFileConstants.AccAnnotation)) != 0;
if (typeDecl == null || notAClass) {
annotationNode.addError("@Log is legal only on classes and enums.");
return false;
}
if (loggingClassName.equals("void.class")) {
loggingClassName = getSelfName(owner);
}
return handleType(annotationNode, source, loggingClassName);
default:
annotationNode.addError("@Log is legal only on types.");
return true;
}
}
private String getSelfName(EclipseNode type) {
String typeName = getSingleTypeName(type);
EclipseNode upType = type.up();
while (upType.getKind() == Kind.TYPE) {
typeName = getSingleTypeName(upType) + "." + typeName;
upType = upType.up();
}
String packageDeclaration = type.getPackageDeclaration();
if (packageDeclaration != null) {
typeName = packageDeclaration + "." + typeName;
}
return typeName + ".class";
}
private String getSingleTypeName(EclipseNode type) {
TypeDeclaration typeDeclaration = (TypeDeclaration)type.get();
char[] rawTypeName = typeDeclaration.name;
return rawTypeName == null ? "" : new String(rawTypeName);
}
private boolean handleType(EclipseNode annotation, Annotation source, String loggingClassName) {
int pS = source.sourceStart, pE = source.sourceEnd;
long p = (long)pS << 32 | pE;
EclipseNode typeNode = annotation.up();
MemberExistsResult fieldExists = fieldExists("log", typeNode);
switch (fieldExists) {
case NOT_EXISTS:
// private static final org.slf4j.Logger log = org.slf4j.LoggerFactory.getLogger(LoggerLog4j.class);
FieldDeclaration fieldDecl = new FieldDeclaration("log".toCharArray(), 0, -1);
Eclipse.setGeneratedBy(fieldDecl, source);
fieldDecl.declarationSourceEnd = -1;
fieldDecl.modifiers = Modifier.PRIVATE | Modifier.STATIC | Modifier.FINAL;
fieldDecl.type = new QualifiedTypeReference(fromQualifiedName("org.slf4j.Logger"), new long[]{p, p, p});
Eclipse.setGeneratedBy(fieldDecl.type, source);
MessageSend factoryMethodCall = new MessageSend();
Eclipse.setGeneratedBy(factoryMethodCall, source);
factoryMethodCall.receiver = new QualifiedNameReference(fromQualifiedName("org.slf4j.LoggerFactory"), new long[] { p, p, p }, pS, pE);
Eclipse.setGeneratedBy(factoryMethodCall.receiver, source);
factoryMethodCall.receiver.statementEnd = pE;
factoryMethodCall.selector = "getLogger".toCharArray();
char[][] loggingClassNameTokens = fromQualifiedName(loggingClassName);
long[] posses = new long[loggingClassNameTokens.length];
Arrays.fill(posses, p);
QualifiedNameReference exRef = new QualifiedNameReference(loggingClassNameTokens, posses, pS, pE);
Eclipse.setGeneratedBy(exRef, source);
exRef.statementEnd = pE;
factoryMethodCall.arguments = new Expression[] { exRef };
factoryMethodCall.nameSourcePosition = p;
factoryMethodCall.sourceStart = pS;
factoryMethodCall.sourceEnd = factoryMethodCall.statementEnd = pE;
fieldDecl.initialization = factoryMethodCall;
injectField(annotation.up(), fieldDecl);
annotation.up().rebuild();
return true;
case EXISTS_BY_USER:
annotation.addWarning("Field 'log' already exists.");
}
return true;
}
}
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