/*
* Copyright 2003-2013 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.groovy.control.customizers.builder;
import groovy.lang.Closure;
import groovy.util.AbstractFactory;
import groovy.util.FactoryBuilderSupport;
import org.codehaus.groovy.control.CompilePhase;
import org.codehaus.groovy.control.customizers.CompilationCustomizer;
import org.codehaus.groovy.runtime.ProxyGeneratorAdapter;
import java.util.HashMap;
import java.util.Map;
/**
* This factory lets a user define a compilation customizer without having to define
* an anonymous inner class.
* <p>
* Here is an example, which only logs the class name during compilation:
* <pre>
* inline(phase:'CONVERSION') { source, context, classNode ->
* println "visiting $classNode"
* }
* </pre>
*
* @author Cedric Champeau
* @since 2.1.0
*/
@SuppressWarnings("unchecked")
public class InlinedASTCustomizerFactory extends AbstractFactory implements PostCompletionFactory {
@Override
public boolean isHandlesNodeChildren() {
return true;
}
public Object newInstance(final FactoryBuilderSupport builder, final Object name, final Object value, final Map attributes) throws InstantiationException, IllegalAccessException {
if (attributes.isEmpty() || !attributes.containsKey("phase")) {
throw new RuntimeException("You must specify a CompilePhase to run at, using the [phase] attribute");
}
Map result = new HashMap(1+attributes.size());
result.putAll(attributes);
return result;
}
@Override
public boolean onNodeChildren(final FactoryBuilderSupport builder, final Object node, final Closure childContent) {
if (node instanceof Map) {
((Map)node).put("call", childContent.clone());
}
return false;
}
public Object postCompleteNode(final FactoryBuilderSupport factory, final Object parent, final Object node) {
if (node instanceof Map) {
Map map = (Map) node;
ProxyGeneratorAdapter adapter = new ProxyGeneratorAdapter(
map,
map.containsKey("superClass")?(Class)map.get("superClass"):CompilationCustomizer.class,
map.containsKey("interfaces")?(Class[])map.get("interfaces"):null,
this.getClass().getClassLoader(),
false,
null
);
Object phase = map.get("phase");
if (!(phase instanceof CompilePhase)) {
phase = CompilePhase.valueOf(phase.toString());
}
return adapter.proxy(map, phase);
}
return node;
}
}