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/*
* Copyright (C) 2011 The Project Lombok Authors.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
package lombok.javac;
import java.util.Collections;
import java.util.List;
import java.util.Map;
import java.util.WeakHashMap;
import com.sun.tools.javac.main.JavaCompiler;
import com.sun.tools.javac.tree.JCTree.JCCompilationUnit;
import com.sun.tools.javac.util.Context;
public class CommentCatcher {
private final JavaCompiler compiler;
private final Map<JCCompilationUnit, List<Comment>> commentsMap;
public static CommentCatcher create(Context context) {
registerCommentsCollectingScannerFactory(context);
JavaCompiler compiler = new JavaCompiler(context);
Map<JCCompilationUnit, List<Comment>> commentsMap = new WeakHashMap<JCCompilationUnit, List<Comment>>();
setInCompiler(compiler, context, commentsMap);
compiler.keepComments = true;
compiler.genEndPos = true;
return new CommentCatcher(compiler, commentsMap);
}
private CommentCatcher(JavaCompiler compiler, Map<JCCompilationUnit, List<Comment>> commentsMap) {
this.compiler = compiler;
this.commentsMap = commentsMap;
}
public JavaCompiler getCompiler() {
return compiler;
}
public List<Comment> getComments(JCCompilationUnit ast) {
List<Comment> list = commentsMap.get(ast);
return list == null ? Collections.<Comment>emptyList() : list;
}
private static void registerCommentsCollectingScannerFactory(Context context) {
try {
if (JavaCompiler.version().startsWith("1.6")) {
Class.forName("lombok.javac.java6.CommentCollectingScannerFactory").getMethod("preRegister", Context.class).invoke(null, context);
} else {
Class.forName("lombok.javac.java7.CommentCollectingScannerFactory").getMethod("preRegister", Context.class).invoke(null, context);
}
} catch (Exception e) {
if (e instanceof RuntimeException) throw (RuntimeException)e;
throw new RuntimeException(e);
}
}
private static void setInCompiler(JavaCompiler compiler, Context context, Map<JCCompilationUnit, List<Comment>> commentsMap) {
try {
if (JavaCompiler.version().startsWith("1.6")) {
Class<?> parserFactory = Class.forName("lombok.javac.java6.CommentCollectingParserFactory");
parserFactory.getMethod("setInCompiler",JavaCompiler.class, Context.class, Map.class).invoke(null, compiler, context, commentsMap);
} else {
Class<?> parserFactory = Class.forName("lombok.javac.java7.CommentCollectingParserFactory");
parserFactory.getMethod("setInCompiler",JavaCompiler.class, Context.class, Map.class).invoke(null, compiler, context, commentsMap);
}
} catch (Exception e) {
if (e instanceof RuntimeException) throw (RuntimeException)e;
throw new RuntimeException(e);
}
}
}
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