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/*
* Copyright © 2009 Reinier Zwitserloot and Roel Spilker.
*
* 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.*;
import static lombok.eclipse.handlers.PKG.*;
import java.lang.reflect.Modifier;
import lombok.AccessLevel;
import lombok.Setter;
import lombok.core.AnnotationValues;
import lombok.core.TransformationsUtil;
import lombok.core.AST.Kind;
import lombok.eclipse.EclipseAnnotationHandler;
import lombok.eclipse.EclipseAST.Node;
import org.eclipse.jdt.internal.compiler.ast.ASTNode;
import org.eclipse.jdt.internal.compiler.ast.Annotation;
import org.eclipse.jdt.internal.compiler.ast.Argument;
import org.eclipse.jdt.internal.compiler.ast.Assignment;
import org.eclipse.jdt.internal.compiler.ast.FieldDeclaration;
import org.eclipse.jdt.internal.compiler.ast.FieldReference;
import org.eclipse.jdt.internal.compiler.ast.MethodDeclaration;
import org.eclipse.jdt.internal.compiler.ast.SingleNameReference;
import org.eclipse.jdt.internal.compiler.ast.Statement;
import org.eclipse.jdt.internal.compiler.ast.ThisReference;
import org.eclipse.jdt.internal.compiler.ast.TypeDeclaration;
import org.eclipse.jdt.internal.compiler.ast.TypeReference;
import org.eclipse.jdt.internal.compiler.classfmt.ClassFileConstants;
import org.eclipse.jdt.internal.compiler.lookup.MethodScope;
import org.eclipse.jdt.internal.compiler.lookup.TypeIds;
import org.mangosdk.spi.ProviderFor;
/**
* Handles the <code>lombok.Setter</code> annotation for eclipse.
*/
@ProviderFor(EclipseAnnotationHandler.class)
public class HandleSetter implements EclipseAnnotationHandler<Setter> {
/**
* Generates a setter on the stated field.
*
* Used by {@link HandleData}.
*
* The difference between this call and the handle method is as follows:
*
* If there is a <code>lombok.Setter</code> annotation on the field, it is used and the
* same rules apply (e.g. warning if the method already exists, stated access level applies).
* If not, the setter is still generated if it isn't already there, though there will not
* be a warning if its already there. The default access level is used.
*/
public void generateSetterForField(Node fieldNode, ASTNode pos) {
for ( Node child : fieldNode.down() ) {
if ( child.getKind() == Kind.ANNOTATION ) {
if ( annotationTypeMatches(Setter.class, child) ) {
//The annotation will make it happen, so we can skip it.
return;
}
}
}
createSetterForField(AccessLevel.PUBLIC, fieldNode, fieldNode, pos, false);
}
public boolean handle(AnnotationValues<Setter> annotation, Annotation ast, Node annotationNode) {
Node fieldNode = annotationNode.up();
if ( fieldNode.getKind() != Kind.FIELD ) return false;
AccessLevel level = annotation.getInstance().value();
if ( level == AccessLevel.NONE ) return true;
return createSetterForField(level, fieldNode, annotationNode, annotationNode.get(), true);
}
private boolean createSetterForField(AccessLevel level, Node fieldNode, Node errorNode, ASTNode pos, boolean whineIfExists) {
if ( fieldNode.getKind() != Kind.FIELD ) {
errorNode.addError("@Setter is only supported on a field.");
return true;
}
FieldDeclaration field = (FieldDeclaration) fieldNode.get();
String setterName = TransformationsUtil.toSetterName(new String(field.name));
int modifier = toModifier(level) | (field.modifiers & ClassFileConstants.AccStatic);
switch ( methodExists(setterName, fieldNode) ) {
case EXISTS_BY_LOMBOK:
return true;
case EXISTS_BY_USER:
if ( whineIfExists ) errorNode.addWarning(
String.format("Not generating %s(%s %s): A method with that name already exists",
setterName, field.type, new String(field.name)));
return true;
default:
case NOT_EXISTS:
//continue with creating the setter
}
MethodDeclaration method = generateSetter((TypeDeclaration) fieldNode.up().get(), field, setterName, modifier, pos);
injectMethod(fieldNode.up(), method);
return true;
}
private MethodDeclaration generateSetter(TypeDeclaration parent, FieldDeclaration field, String name,
int modifier, ASTNode ast) {
long pos = (((long)ast.sourceStart) << 32) | ast.sourceEnd;
MethodDeclaration method = new MethodDeclaration(parent.compilationResult);
method.modifiers = modifier;
method.returnType = TypeReference.baseTypeReference(TypeIds.T_void, 0);
method.annotations = null;
Argument param = new Argument(field.name, pos, copyType(field.type), Modifier.FINAL);
method.arguments = new Argument[] { param };
method.selector = name.toCharArray();
method.binding = null;
method.thrownExceptions = null;
method.typeParameters = null;
method.scope = parent.scope == null ? null : new MethodScope(parent.scope, method, false);
method.bits |= ECLIPSE_DO_NOT_TOUCH_FLAG;
FieldReference thisX = new FieldReference(field.name, pos);
thisX.receiver = new ThisReference(ast.sourceStart, ast.sourceEnd);
Assignment assignment = new Assignment(thisX, new SingleNameReference(field.name, pos), (int)pos);
method.bodyStart = method.declarationSourceStart = method.sourceStart = ast.sourceStart;
method.bodyEnd = method.declarationSourceEnd = method.sourceEnd = ast.sourceEnd;
Annotation[] nonNulls = findAnnotations(field, TransformationsUtil.NON_NULL_PATTERN);
Annotation[] nullables = findAnnotations(field, TransformationsUtil.NULLABLE_PATTERN);
if (nonNulls.length == 0) {
method.statements = new Statement[] { assignment };
} else {
Statement nullCheck = generateNullCheck(field);
if (nullCheck != null) method.statements = new Statement[] { nullCheck, assignment };
else method.statements = new Statement[] { assignment };
}
Annotation[] copiedAnnotations = copyAnnotations(nonNulls, nullables, pos);
if (copiedAnnotations.length != 0) param.annotations = copiedAnnotations;
return method;
}
}
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