/*
* Copyright 2016 the original author or authors.
*
* 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 org.gradle.api.internal.tasks.compile;
import com.google.common.collect.Lists;
import org.objectweb.asm.AnnotationVisitor;
import java.util.List;
import static org.objectweb.asm.Opcodes.ASM5;
public class SortingAnnotationVisitor extends AnnotationVisitor {
private final List<AnnotationValue<?>> annotationValues = Lists.newLinkedList();
private final AnnotationMember annotation;
private SortingAnnotationVisitor parentVisitor;
private String annotationValueName;
private String arrayValueName;
public SortingAnnotationVisitor(AnnotationMember parentAnnotation, AnnotationVisitor av) {
super(ASM5, av);
this.annotation = parentAnnotation;
}
@Override
public AnnotationVisitor visitAnnotation(String name, String desc) {
AnnotationMember annotation = new AnnotationMember(desc, true);
SortingAnnotationVisitor visitor =
new SortingAnnotationVisitor(annotation, super.visitAnnotation(name, desc));
visitor.parentVisitor = this;
visitor.annotationValueName = nameOrValue(name);
return visitor;
}
@Override
public void visit(String name, Object value) {
annotationValues.add(new SimpleAnnotationValue(nameOrValue(name), value));
super.visit(name, value);
}
@Override
public AnnotationVisitor visitArray(String name) {
SortingAnnotationVisitor visitor = new SortingAnnotationVisitor(annotation, super.visitArray(name));
visitor.arrayValueName = name;
return visitor;
}
@Override
public void visitEnum(String name, String desc, String value) {
annotationValues.add(new EnumAnnotationValue(nameOrValue(name), value, desc));
super.visitEnum(name, desc, value);
}
@Override
public void visitEnd() {
if (annotationValueName != null) {
AnnotationAnnotationValue value = new AnnotationAnnotationValue(annotationValueName, annotation);
parentVisitor.annotationValues.add(value);
annotationValueName = null;
} else if (arrayValueName != null) {
ArrayAnnotationValue value = new ArrayAnnotationValue(
arrayValueName, annotationValues.toArray(new AnnotationValue<?>[0]));
annotation.addValue(value);
arrayValueName = null;
}
annotation.addValues(annotationValues);
annotationValues.clear();
super.visitEnd();
}
private String nameOrValue(String name) {
return name == null ? "value" : name;
}
}