Mercurial > hg > graal-compiler
view graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/parser/AbstractParser.java @ 16923:93e061157811
Truffle-DSL: better support for types with type arguments.
author | Christian Humer <christian.humer@gmail.com> |
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date | Mon, 25 Aug 2014 20:59:56 +0200 |
parents | 13cf9b6b325c |
children |
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/* * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ package com.oracle.truffle.dsl.processor.parser; import java.lang.annotation.*; import java.util.*; import javax.annotation.processing.*; import javax.lang.model.element.*; import javax.tools.Diagnostic.Kind; import com.oracle.truffle.dsl.processor.*; import com.oracle.truffle.dsl.processor.java.*; import com.oracle.truffle.dsl.processor.model.*; import com.oracle.truffle.dsl.processor.model.MessageContainer.Message; /** * THIS IS NOT PUBLIC API. */ public abstract class AbstractParser<M extends MessageContainer> { protected final ProcessorContext context; protected final ProcessingEnvironment processingEnv; protected final Log log; public AbstractParser() { this.context = ProcessorContext.getInstance(); this.processingEnv = context.getEnvironment(); this.log = context.getLog(); } public final M parse(Element element) { M model = null; try { AnnotationMirror mirror = null; if (getAnnotationType() != null) { mirror = ElementUtils.findAnnotationMirror(processingEnv, element.getAnnotationMirrors(), getAnnotationType()); } if (!context.getTruffleTypes().verify(context, element, mirror)) { return null; } model = parse(element, mirror); if (model == null) { return null; } redirectMessages(new HashSet<MessageContainer>(), model, model); model.emitMessages(context, log); return filterErrorElements(model); } catch (CompileErrorException e) { log.message(Kind.WARNING, element, null, null, "The truffle processor could not parse class due to error: %s", e.getMessage()); return null; } } private void redirectMessages(Set<MessageContainer> visitedSinks, MessageContainer model, MessageContainer baseContainer) { List<Message> messages = model.getMessages(); for (int i = messages.size() - 1; i >= 0; i--) { Message message = messages.get(i); if (!ElementUtils.isEnclosedIn(baseContainer.getMessageElement(), message.getOriginalContainer().getMessageElement())) { // redirect message MessageContainer original = message.getOriginalContainer(); String text = wrapText(original.getMessageElement(), original.getMessageAnnotation(), message.getText()); Message redirectedMessage = new Message(null, null, baseContainer, text, message.getKind()); model.getMessages().remove(i); baseContainer.getMessages().add(redirectedMessage); } } for (MessageContainer childContainer : model) { if (visitedSinks.contains(childContainer)) { continue; } visitedSinks.add(childContainer); MessageContainer newBase = baseContainer; if (childContainer.getBaseContainer() != null) { newBase = childContainer.getBaseContainer(); } redirectMessages(visitedSinks, childContainer, newBase); } } private static String wrapText(Element element, AnnotationMirror mirror, String text) { StringBuilder b = new StringBuilder(); if (element != null) { if (element.getKind() == ElementKind.METHOD) { b.append("Method " + ElementUtils.createReferenceName((ExecutableElement) element)); } else { b.append("Element " + element.getSimpleName()); } } if (mirror != null) { b.append(" at annotation @" + ElementUtils.getSimpleName(mirror.getAnnotationType()).trim()); } if (b.length() > 0) { b.append(" is erroneous: ").append(text); return b.toString(); } else { return text; } } protected M filterErrorElements(M model) { return model.hasErrors() ? null : model; } protected abstract M parse(Element element, AnnotationMirror mirror); public abstract Class<? extends Annotation> getAnnotationType(); public boolean isDelegateToRootDeclaredType() { return false; } public List<Class<? extends Annotation>> getAllAnnotationTypes() { List<Class<? extends Annotation>> list = new ArrayList<>(); if (getAnnotationType() != null) { list.add(getAnnotationType()); } list.addAll(getTypeDelegatedAnnotationTypes()); return list; } public List<Class<? extends Annotation>> getTypeDelegatedAnnotationTypes() { return Collections.emptyList(); } }