/**
* Copyright 2011-2014 Asakusa Framework Team.
*
* 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 com.asakusafw.compiler.operator.flow;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.util.Collections;
import java.util.List;
import java.util.Set;
import javax.annotation.processing.Completion;
import javax.annotation.processing.ProcessingEnvironment;
import javax.annotation.processing.Processor;
import javax.annotation.processing.RoundEnvironment;
import javax.lang.model.SourceVersion;
import javax.lang.model.element.AnnotationMirror;
import javax.lang.model.element.Element;
import javax.lang.model.element.ExecutableElement;
import javax.lang.model.element.TypeElement;
import javax.tools.Diagnostic;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.asakusafw.compiler.operator.OperatorCompiler;
import com.asakusafw.compiler.operator.OperatorCompilerException;
import com.asakusafw.compiler.operator.OperatorCompilerOptions;
import com.asakusafw.compiler.operator.OperatorCompilingEnvironment;
import com.asakusafw.utils.collections.Sets;
import com.asakusafw.utils.java.model.util.Models;
import com.asakusafw.vocabulary.flow.FlowPart;
/**
* フロー部品をもとにした演算子ファクトリーを生成する。
* @since 0.1.0
* @version 0.7.0
*/
public class FlowOperatorCompiler implements Processor {
/**
* このコンパイラのバージョン。
*/
public static final String VERSION = "0.1.0";
static final Logger LOG = LoggerFactory.getLogger(FlowOperatorCompiler.class);
private OperatorCompilingEnvironment environment;
@Override
public void init(ProcessingEnvironment processingEnv) {
this.environment = new OperatorCompilingEnvironment(
processingEnv,
Models.getModelFactory(),
OperatorCompilerOptions.parse(processingEnv.getOptions()));
}
@Override
public Set<String> getSupportedOptions() {
return Collections.emptySet();
}
@Override
public Set<String> getSupportedAnnotationTypes() {
Set<String> results = Sets.create();
results.add(FlowPart.class.getName());
return results;
}
@Override
public SourceVersion getSupportedSourceVersion() {
return OperatorCompiler.computeSupportedVersion();
}
@Override
public Iterable<? extends Completion> getCompletions(
Element element,
AnnotationMirror annotation,
ExecutableElement member,
String userText) {
return Collections.emptyList();
}
@Override
public boolean process(
Set<? extends TypeElement> annotations,
RoundEnvironment roundEnv) {
try {
start(roundEnv);
} catch (OperatorCompilerException e) {
if (e.getKind() != null) {
environment.getMessager().printMessage(
e.getKind(),
e.getMessage());
}
LOG.debug(e.getMessage(), e);
} catch (RuntimeException e) {
environment.getMessager().printMessage(Diagnostic.Kind.ERROR, toDetailString(e));
LOG.error("フロー演算子のコンパイルに失敗しました", e);
}
return false;
}
private String toDetailString(RuntimeException e) {
StringWriter writer = new StringWriter();
PrintWriter pw = new PrintWriter(writer);
pw.println("フロー演算子のコンパイルに失敗しました:");
e.printStackTrace(pw);
pw.close();
return writer.toString();
}
private void start(RoundEnvironment roundEnv) {
assert roundEnv != null;
FlowPartClassCollector collector = new FlowPartClassCollector(environment);
for (Element element : roundEnv.getElementsAnnotatedWith(FlowPart.class)) {
collector.add(element);
}
List<FlowPartClass> collected = collector.collect();
FlowClassEmitter emitter = new FlowClassEmitter(environment);
for (FlowPartClass aClass : collected) {
emitter.emit(aClass);
}
}
}