Mercurial > hg > graal-compiler
diff graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/AnnotationProcessor.java @ 10597:79041ab43660
Truffle-DSL: API-change: Renamed truffle.api.codegen to truffle.api.dsl for all projects and packages.
author | Christian Humer <christian.humer@gmail.com> |
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date | Mon, 01 Jul 2013 20:58:32 +0200 |
parents | |
children | 36b53fe97fae |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/AnnotationProcessor.java Mon Jul 01 20:58:32 2013 +0200 @@ -0,0 +1,132 @@ +/* + * 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; + +import java.io.*; +import java.util.*; + +import javax.annotation.processing.*; +import javax.lang.model.element.*; +import javax.lang.model.type.*; +import javax.tools.*; + +import com.oracle.truffle.dsl.processor.ast.*; +import com.oracle.truffle.dsl.processor.codewriter.*; +import com.oracle.truffle.dsl.processor.compiler.*; +import com.oracle.truffle.dsl.processor.template.*; + +/** + * THIS IS NOT PUBLIC API. + */ +class AnnotationProcessor<M extends Template> { + + private final AbstractParser<M> parser; + private final CompilationUnitFactory<M> factory; + private final ProcessorContext context; + + private final Set<String> processedElements = new HashSet<>(); + + public AnnotationProcessor(ProcessorContext context, AbstractParser<M> parser, CompilationUnitFactory<M> factory) { + this.context = context; + this.parser = parser; + this.factory = factory; + } + + public AbstractParser<M> getParser() { + return parser; + } + + public ProcessorContext getContext() { + return context; + } + + @SuppressWarnings({"unchecked"}) + public void process(RoundEnvironment env, Element element, boolean callback) { + + // since it is not guaranteed to be called only once by the compiler + // we check for already processed elements to avoid errors when writing files. + if (!callback && element instanceof TypeElement) { + String qualifiedName = Utils.getQualifiedName((TypeElement) element); + if (processedElements.contains(qualifiedName)) { + return; + } + processedElements.add(qualifiedName); + } + + TypeElement type = (TypeElement) element; + + M model = (M) context.getTemplate(type.asType(), false); + boolean firstRun = !context.containsTemplate(type); + + if (firstRun || !callback) { + context.registerTemplate(type, null); + model = parser.parse(env, element); + context.registerTemplate(type, model); + + if (model != null) { + CodeCompilationUnit unit = factory.process(null, model); + unit.setGeneratorAnnotationMirror(model.getTemplateTypeAnnotation()); + unit.setGeneratorElement(model.getTemplateType()); + + DeclaredType overrideType = (DeclaredType) context.getType(Override.class); + DeclaredType unusedType = (DeclaredType) context.getType(SuppressWarnings.class); + unit.accept(new GenerateOverrideVisitor(overrideType), null); + unit.accept(new FixWarningsVisitor(context, unusedType, overrideType), null); + + if (!callback) { + unit.accept(new CodeWriter(context.getEnvironment(), element), null); + } + } + } + } + + private static class CodeWriter extends AbstractCodeWriter { + + private final Element orignalElement; + private final ProcessingEnvironment env; + + public CodeWriter(ProcessingEnvironment env, Element originalElement) { + this.env = env; + this.orignalElement = originalElement; + } + + @Override + protected Writer createWriter(CodeTypeElement clazz) throws IOException { + JavaFileObject jfo = env.getFiler().createSourceFile(clazz.getQualifiedName(), orignalElement); + return jfo.openWriter(); + } + + @Override + protected void writeHeader() { + if (env == null) { + return; + } + String comment = CompilerFactory.getCompiler(orignalElement).getHeaderComment(env, orignalElement); + if (comment != null) { + writeLn(comment); + } + } + + } + +}