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package lombok.eclipse.handlers;
import static lombok.eclipse.handlers.PKG.*;
import org.eclipse.jdt.internal.compiler.ast.ASTNode;
import org.eclipse.jdt.internal.compiler.ast.AbstractMethodDeclaration;
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.lookup.MethodScope;
import org.eclipse.jdt.internal.compiler.lookup.TypeIds;
import org.mangosdk.spi.ProviderFor;
import lombok.Setter;
import lombok.core.AnnotationValues;
import lombok.core.TransformationsUtil;
import lombok.eclipse.EclipseAnnotationHandler;
import lombok.eclipse.EclipseAST.Node;
@ProviderFor(EclipseAnnotationHandler.class)
public class HandleSetter implements EclipseAnnotationHandler<Setter> {
@Override public boolean handle(AnnotationValues<Setter> annotation, Annotation ast, Node annotationNode) {
if ( !(annotationNode.up().get() instanceof FieldDeclaration) ) return false;
FieldDeclaration field = (FieldDeclaration) annotationNode.up().get();
String setterName = TransformationsUtil.toSetterName(new String(field.name));
TypeDeclaration parent = (TypeDeclaration) annotationNode.up().up().get();
if ( parent.methods != null ) for ( AbstractMethodDeclaration method : parent.methods ) {
if ( method.selector != null && new String(method.selector).equals(setterName) ) {
annotationNode.addWarning(String.format(
"Not generating %s(%s %s): A method with that name already exists",
setterName, field.type, new String(field.name)));
return false;
}
}
int modifier = toModifier(annotation.getInstance().value());
MethodDeclaration method = generateSetter(parent, field, setterName, modifier, ast);
if ( parent.methods == null ) {
parent.methods = new AbstractMethodDeclaration[1];
parent.methods[0] = method;
} else {
AbstractMethodDeclaration[] newArray = new AbstractMethodDeclaration[parent.methods.length + 1];
System.arraycopy(parent.methods, 0, newArray, 0, parent.methods.length);
newArray[parent.methods.length] = method;
parent.methods = newArray;
}
return true;
}
private MethodDeclaration generateSetter(TypeDeclaration parent, FieldDeclaration field, String name,
int modifier, Annotation 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, field.type, 0);
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 |= ASTNode.Bit24;
FieldReference thisX = new FieldReference(("this." + new String(field.name)).toCharArray(), pos);
thisX.receiver = new ThisReference(ast.sourceStart, ast.sourceEnd);
thisX.token = field.name;
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;
method.statements = new Statement[] { assignment };
return method;
}
}
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