1.1 --- a/geo/src/main/java/org/apidesign/html/geo/impl/GeoProcessor.java Mon Dec 16 15:48:09 2013 +0100
1.2 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000
1.3 @@ -1,289 +0,0 @@
1.4 -/**
1.5 - * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
1.6 - *
1.7 - * Copyright 1997-2010 Oracle and/or its affiliates. All rights reserved.
1.8 - *
1.9 - * Oracle and Java are registered trademarks of Oracle and/or its affiliates.
1.10 - * Other names may be trademarks of their respective owners.
1.11 - *
1.12 - * The contents of this file are subject to the terms of either the GNU
1.13 - * General Public License Version 2 only ("GPL") or the Common
1.14 - * Development and Distribution License("CDDL") (collectively, the
1.15 - * "License"). You may not use this file except in compliance with the
1.16 - * License. You can obtain a copy of the License at
1.17 - * http://www.netbeans.org/cddl-gplv2.html
1.18 - * or nbbuild/licenses/CDDL-GPL-2-CP. See the License for the
1.19 - * specific language governing permissions and limitations under the
1.20 - * License. When distributing the software, include this License Header
1.21 - * Notice in each file and include the License file at
1.22 - * nbbuild/licenses/CDDL-GPL-2-CP. Oracle designates this
1.23 - * particular file as subject to the "Classpath" exception as provided
1.24 - * by Oracle in the GPL Version 2 section of the License file that
1.25 - * accompanied this code. If applicable, add the following below the
1.26 - * License Header, with the fields enclosed by brackets [] replaced by
1.27 - * your own identifying information:
1.28 - * "Portions Copyrighted [year] [name of copyright owner]"
1.29 - *
1.30 - * Contributor(s):
1.31 - *
1.32 - * The Original Software is NetBeans. The Initial Developer of the Original
1.33 - * Software is Oracle. Portions Copyright 2013-2013 Oracle. All Rights Reserved.
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1.35 - * If you wish your version of this file to be governed by only the CDDL
1.36 - * or only the GPL Version 2, indicate your decision by adding
1.37 - * "[Contributor] elects to include this software in this distribution
1.38 - * under the [CDDL or GPL Version 2] license." If you do not indicate a
1.39 - * single choice of license, a recipient has the option to distribute
1.40 - * your version of this file under either the CDDL, the GPL Version 2 or
1.41 - * to extend the choice of license to its licensees as provided above.
1.42 - * However, if you add GPL Version 2 code and therefore, elected the GPL
1.43 - * Version 2 license, then the option applies only if the new code is
1.44 - * made subject to such option by the copyright holder.
1.45 - */
1.46 -package org.apidesign.html.geo.impl;
1.47 -
1.48 -import java.io.IOException;
1.49 -import java.io.Writer;
1.50 -import java.util.List;
1.51 -import java.util.Locale;
1.52 -import java.util.Set;
1.53 -import java.util.logging.Level;
1.54 -import java.util.logging.Logger;
1.55 -import javax.annotation.processing.AbstractProcessor;
1.56 -import javax.annotation.processing.Processor;
1.57 -import javax.annotation.processing.RoundEnvironment;
1.58 -import javax.annotation.processing.SupportedAnnotationTypes;
1.59 -import javax.annotation.processing.SupportedSourceVersion;
1.60 -import javax.lang.model.SourceVersion;
1.61 -import javax.lang.model.element.Element;
1.62 -import javax.lang.model.element.ElementKind;
1.63 -import javax.lang.model.element.ExecutableElement;
1.64 -import javax.lang.model.element.Modifier;
1.65 -import javax.lang.model.element.PackageElement;
1.66 -import javax.lang.model.element.TypeElement;
1.67 -import javax.lang.model.element.VariableElement;
1.68 -import javax.lang.model.type.TypeMirror;
1.69 -import javax.tools.Diagnostic;
1.70 -import javax.tools.JavaFileObject;
1.71 -import net.java.html.geo.OnLocation;
1.72 -import net.java.html.geo.Position;
1.73 -import org.openide.util.lookup.ServiceProvider;
1.74 -
1.75 -/** Annotation processor to generate callbacks from {@link GeoHandle} class.
1.76 - *
1.77 - * @author Jaroslav Tulach <jtulach@netbeans.org>
1.78 - */
1.79 -@ServiceProvider(service=Processor.class)
1.80 -@SupportedSourceVersion(SourceVersion.RELEASE_6)
1.81 -@SupportedAnnotationTypes({
1.82 - "net.java.html.geo.OnLocation"
1.83 -})
1.84 -public final class GeoProcessor extends AbstractProcessor {
1.85 - private static final Logger LOG = Logger.getLogger(GeoProcessor.class.getName());
1.86 - @Override
1.87 - public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) {
1.88 - boolean ok = true;
1.89 - for (Element e : roundEnv.getElementsAnnotatedWith(OnLocation.class)) {
1.90 - if (!processLocation(e)) {
1.91 - ok = false;
1.92 - }
1.93 - }
1.94 - return ok;
1.95 - }
1.96 -
1.97 - private void error(String msg, Element e) {
1.98 - processingEnv.getMessager().printMessage(Diagnostic.Kind.ERROR, msg, e);
1.99 - }
1.100 -
1.101 - private boolean processLocation(Element e) {
1.102 - if (e.getKind() != ElementKind.METHOD) {
1.103 - return false;
1.104 - }
1.105 - ExecutableElement me = (ExecutableElement) e;
1.106 - OnLocation ol = e.getAnnotation(OnLocation.class);
1.107 - if (ol == null) {
1.108 - return true;
1.109 - }
1.110 - if (me.getModifiers().contains(Modifier.PRIVATE)) {
1.111 - error("Method annotated by @OnLocation cannot be private", e);
1.112 - return false;
1.113 - }
1.114 - TypeMirror positionClass = processingEnv.getElementUtils().getTypeElement(Position.class.getName()).asType();
1.115 - final List<? extends VariableElement> params = me.getParameters();
1.116 - if (params.size() < 1 || !params.get(0).asType().equals(positionClass)) {
1.117 - error("Method annotated by @OnLocation first argument must be net.java.html.geo.Position!", e);
1.118 - return false;
1.119 - }
1.120 - String className = ol.className();
1.121 - if (className.isEmpty()) {
1.122 - String n = e.getSimpleName().toString();
1.123 - if (n.isEmpty()) {
1.124 - error("Empty method name", e);
1.125 - return false;
1.126 - }
1.127 - final String firstLetter = n.substring(0, 1).toUpperCase(Locale.ENGLISH);
1.128 - className = firstLetter + n.substring(1) + "Handle";
1.129 - }
1.130 - TypeElement te = (TypeElement)e.getEnclosingElement();
1.131 - PackageElement pe = (PackageElement) te.getEnclosingElement();
1.132 - final String pkg = pe.getQualifiedName().toString();
1.133 - final String fqn = pkg + "." + className;
1.134 - final boolean isStatic = me.getModifiers().contains(Modifier.STATIC);
1.135 - String sep;
1.136 - try {
1.137 - JavaFileObject fo = processingEnv.getFiler().createSourceFile(fqn, e);
1.138 - Writer w = fo.openWriter();
1.139 - w.append("package ").append(pkg).append(";\n");
1.140 - w.append("class ").append(className).append(" extends net.java.html.geo.Position.Handle {\n");
1.141 - if (!isStatic) {
1.142 - w.append(" private final ").append(te.getSimpleName()).append(" $i;\n");
1.143 - }
1.144 - for (int i = 1; i < params.size(); i++) {
1.145 - final VariableElement p = params.get(i);
1.146 - w.append(" private final ").append(p.asType().toString()).append(" ").append(p.getSimpleName()).append(";\n");
1.147 - }
1.148 - w.append(" private ").append(className).append("(boolean oneTime");
1.149 - w.append(", ").append(te.getSimpleName()).append(" i");
1.150 - for (int i = 1; i < params.size(); i++) {
1.151 - final VariableElement p = params.get(i);
1.152 - w.append(", ").append(p.asType().toString()).append(" ").append(p.getSimpleName());
1.153 - }
1.154 - w.append(") {\n super(oneTime);\n");
1.155 - if (!isStatic) {
1.156 - w.append(" this.$i = i;\n");
1.157 - }
1.158 - for (int i = 1; i < params.size(); i++) {
1.159 - final VariableElement p = params.get(i);
1.160 - w.append(" this.").append(p.getSimpleName()).append(" = ").append(p.getSimpleName()).append(";\n");
1.161 - }
1.162 - w.append("}\n");
1.163 - w.append(" static net.java.html.geo.Position.Handle createQuery(");
1.164 - String inst;
1.165 - if (!isStatic) {
1.166 - w.append(te.getSimpleName()).append(" instance");
1.167 - inst = "instance";
1.168 - sep = ", ";
1.169 - } else {
1.170 - inst = "null";
1.171 - sep = "";
1.172 - }
1.173 - for (int i = 1; i < params.size(); i++) {
1.174 - final VariableElement p = params.get(i);
1.175 - w.append(sep).append(p.asType().toString()).append(" ").append(p.getSimpleName());
1.176 - sep = ", ";
1.177 - }
1.178 - w.append(") { return new ").append(className).append("(true, ").append(inst);
1.179 - for (int i = 1; i < params.size(); i++) {
1.180 - final VariableElement p = params.get(i);
1.181 - w.append(", ").append(p.getSimpleName());
1.182 - }
1.183 - w.append("); }\n");
1.184 - w.append(" static net.java.html.geo.Position.Handle createWatch(");
1.185 - if (!isStatic) {
1.186 - w.append(te.getSimpleName()).append(" instance");
1.187 - sep = ", ";
1.188 - } else {
1.189 - sep = "";
1.190 - }
1.191 - for (int i = 1; i < params.size(); i++) {
1.192 - final VariableElement p = params.get(i);
1.193 - w.append(sep).append(p.asType().toString()).append(" ").append(p.getSimpleName());
1.194 - }
1.195 - w.append(") { return new ").append(className).append("(false, ").append(inst);
1.196 - for (int i = 1; i < params.size(); i++) {
1.197 - final VariableElement p = params.get(i);
1.198 - w.append(", ").append(p.getSimpleName());
1.199 - }
1.200 - w.append("); }\n");
1.201 - w.append(" @Override protected void onError(Exception t) throws Throwable {\n");
1.202 - if (ol.onError().isEmpty()) {
1.203 - w.append(" t.printStackTrace();");
1.204 - } else {
1.205 - if (!findOnError(me, te, ol.onError(), isStatic)) {
1.206 - return false;
1.207 - }
1.208 - if (isStatic) {
1.209 - w.append(" ").append(te.getSimpleName()).append(".");
1.210 - } else {
1.211 - w.append(" $i.");
1.212 - }
1.213 - w.append(ol.onError()).append("(t");
1.214 - for (int i = 1; i < params.size(); i++) {
1.215 - final VariableElement p = params.get(i);
1.216 - w.append(", ").append(p.getSimpleName());
1.217 - }
1.218 - w.append(");\n");
1.219 - }
1.220 - w.append(" }\n");
1.221 - w.append(" @Override protected void onLocation(net.java.html.geo.Position p) throws Throwable {\n");
1.222 - if (isStatic) {
1.223 - w.append(" ").append(te.getSimpleName()).append(".");
1.224 - } else {
1.225 - w.append(" $i.");
1.226 - }
1.227 - w.append(me.getSimpleName()).append("(p");
1.228 - for (int i = 1; i < params.size(); i++) {
1.229 - final VariableElement p = params.get(i);
1.230 - w.append(", ").append(p.getSimpleName());
1.231 - }
1.232 - w.append(");\n");
1.233 - w.append(" }\n");
1.234 - w.append("}\n");
1.235 - w.close();
1.236 - } catch (IOException ex) {
1.237 - Logger.getLogger(GeoProcessor.class.getName()).log(Level.SEVERE, null, ex);
1.238 - error("Can't write handler class: " + ex.getMessage(), e);
1.239 - return false;
1.240 - }
1.241 -
1.242 - return true;
1.243 - }
1.244 -
1.245 - private boolean findOnError(ExecutableElement errElem, TypeElement te, String name, boolean onlyStatic) {
1.246 - String err = null;
1.247 - METHODS: for (Element e : te.getEnclosedElements()) {
1.248 - if (e.getKind() != ElementKind.METHOD) {
1.249 - continue;
1.250 - }
1.251 - if (!e.getSimpleName().contentEquals(name)) {
1.252 - continue;
1.253 - }
1.254 - if (onlyStatic && !e.getModifiers().contains(Modifier.STATIC)) {
1.255 - errElem = (ExecutableElement) e;
1.256 - err = "Would have to be static";
1.257 - continue;
1.258 - }
1.259 - ExecutableElement ee = (ExecutableElement) e;
1.260 - TypeMirror excType = processingEnv.getElementUtils().getTypeElement(Exception.class.getName()).asType();
1.261 - final List<? extends VariableElement> params = ee.getParameters();
1.262 - if (params.size() < 1 ||
1.263 - !processingEnv.getTypeUtils().isAssignable(excType, ee.getParameters().get(0).asType())
1.264 - ) {
1.265 - errElem = (ExecutableElement) e;
1.266 - err = "Error method first argument needs to be Exception";
1.267 - continue;
1.268 - }
1.269 - final List<? extends Element> origParams = errElem.getParameters();
1.270 - if (params.size() != origParams.size()) {
1.271 - errElem = (ExecutableElement) e;
1.272 - err = "Error method must have the same parameters as @OnLocation one";
1.273 - continue;
1.274 - }
1.275 - for (int i = 1; i < origParams.size(); i++) {
1.276 - final TypeMirror t1 = params.get(i).asType();
1.277 - final TypeMirror t2 = origParams.get(i).asType();
1.278 - if (!processingEnv.getTypeUtils().isSameType(t1, t2)) {
1.279 - errElem = (ExecutableElement) e;
1.280 - err = "Error method must have the same parameters as @OnLocation one";
1.281 - continue METHODS;
1.282 - }
1.283 - }
1.284 - return true;
1.285 - }
1.286 - if (err == null) {
1.287 - err = "Cannot find " + name + "(Exception) method in this class";
1.288 - }
1.289 - error(err, errElem);
1.290 - return false;
1.291 - }
1.292 -}