/*
* Copyright 2008-2017 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.codehaus.griffon.compile.core.ast.transform;
import griffon.util.ServiceLoaderUtils;
import org.codehaus.griffon.compile.core.AnnotationHandler;
import org.codehaus.groovy.ast.ASTNode;
import org.codehaus.groovy.ast.AnnotatedNode;
import org.codehaus.groovy.ast.AnnotationNode;
import org.codehaus.groovy.ast.ClassNode;
import org.codehaus.groovy.ast.FieldNode;
import org.codehaus.groovy.ast.MethodNode;
import org.codehaus.groovy.ast.ModuleNode;
import org.codehaus.groovy.ast.PropertyNode;
import org.codehaus.groovy.control.CompilePhase;
import org.codehaus.groovy.control.SourceUnit;
import org.codehaus.groovy.transform.ASTTransformation;
import org.codehaus.groovy.transform.GroovyASTTransformation;
import org.kordamp.jipsy.ServiceProviderFor;
import javax.annotation.Nonnull;
import javax.annotation.concurrent.GuardedBy;
import java.util.LinkedHashMap;
import java.util.Map;
/**
* @author Andres Almiray
*/
@ServiceProviderFor(ASTTransformation.class)
@GroovyASTTransformation(phase = CompilePhase.SEMANTIC_ANALYSIS)
public class AnnotationHandlerASTTransformation extends AbstractASTTransformation {
private final Object lock = new Object();
@GuardedBy("lock")
private boolean initialized;
@GuardedBy("lock")
private final Map<String, Class<? extends ASTTransformation>> transformations = new LinkedHashMap<>();
@Override
public void visit(ASTNode[] nodes, SourceUnit source) {
synchronized (lock) {
if (!initialized) {
initialize(source);
initialized = true;
}
}
if (nodes.length > 0 && nodes[0] instanceof ModuleNode) {
ModuleNode moduleNode = (ModuleNode) nodes[0];
for (ClassNode classNode : moduleNode.getClasses()) {
visitAnnotationsOnNode(classNode, classNode);
for (MethodNode method : classNode.getMethods()) {
visitAnnotationsOnNode(method, classNode);
}
for (PropertyNode propertyNode : classNode.getProperties()) {
visitAnnotationsOnNode(propertyNode, classNode);
}
for (FieldNode fieldNode : classNode.getFields()) {
visitAnnotationsOnNode(fieldNode, classNode);
}
}
}
}
private void visitAnnotationsOnNode(AnnotatedNode node, ClassNode owner) {
for (AnnotationNode annotationNode : node.getAnnotations()) {
Class<? extends ASTTransformation> transformationClass = transformations.get(annotationNode.getClassNode().getName());
if (transformationClass == null) continue;
GroovyASTTransformation annotation = transformationClass.getAnnotation(GroovyASTTransformation.class);
if (annotation == null) continue;
// Set<ASTNode> nodes = owner.getTransforms(annotation.phase()).get(transformationClass);
// if (nodes != null && !nodes.isEmpty()) continue;
owner.addTransform(transformationClass, annotationNode);
}
}
private void initialize(final SourceUnit source) {
ServiceLoaderUtils.load(getClass().getClassLoader(), "META-INF/annotations/", AnnotationHandler.class, new ServiceLoaderUtils.LineProcessor() {
@Override
@SuppressWarnings("unchecked")
public void process(@Nonnull ClassLoader classLoader, @Nonnull Class<?> type, @Nonnull String line) {
String[] parts = line.trim().split("=");
String annotationClassName = parts[0].trim();
String transformationClassName = parts[1].trim();
try {
Class<?> transformationClass = classLoader.loadClass(transformationClassName);
transformations.put(annotationClassName, (Class<? extends ASTTransformation>) transformationClass);
} catch (Exception e) {
source.addException(e);
}
}
});
}
}