1.1 --- a/boot/src/main/java/org/apidesign/html/boot/impl/JavaScriptProcesor.java Mon Dec 16 15:48:09 2013 +0100
1.2 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000
1.3 @@ -1,369 +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.
1.34 - *
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.boot.impl;
1.47 -
1.48 -import java.io.IOException;
1.49 -import java.io.Writer;
1.50 -import java.util.Collections;
1.51 -import java.util.HashMap;
1.52 -import java.util.HashSet;
1.53 -import java.util.List;
1.54 -import java.util.Map;
1.55 -import java.util.Set;
1.56 -import java.util.TreeMap;
1.57 -import javax.annotation.processing.AbstractProcessor;
1.58 -import javax.annotation.processing.Completion;
1.59 -import javax.annotation.processing.Completions;
1.60 -import javax.annotation.processing.Messager;
1.61 -import javax.annotation.processing.Processor;
1.62 -import javax.annotation.processing.RoundEnvironment;
1.63 -import javax.lang.model.SourceVersion;
1.64 -import javax.lang.model.element.AnnotationMirror;
1.65 -import javax.lang.model.element.Element;
1.66 -import javax.lang.model.element.ElementKind;
1.67 -import javax.lang.model.element.ExecutableElement;
1.68 -import javax.lang.model.element.Modifier;
1.69 -import javax.lang.model.element.PackageElement;
1.70 -import javax.lang.model.element.TypeElement;
1.71 -import javax.lang.model.element.VariableElement;
1.72 -import javax.lang.model.type.ArrayType;
1.73 -import javax.lang.model.type.ExecutableType;
1.74 -import javax.lang.model.type.TypeKind;
1.75 -import javax.lang.model.type.TypeMirror;
1.76 -import javax.tools.Diagnostic;
1.77 -import javax.tools.FileObject;
1.78 -import javax.tools.StandardLocation;
1.79 -import net.java.html.js.JavaScriptBody;
1.80 -import net.java.html.js.JavaScriptResource;
1.81 -import org.openide.util.lookup.ServiceProvider;
1.82 -
1.83 -/**
1.84 - *
1.85 - * @author Jaroslav Tulach <jtulach@netbeans.org>
1.86 - */
1.87 -@ServiceProvider(service = Processor.class)
1.88 -public final class JavaScriptProcesor extends AbstractProcessor {
1.89 - private final Map<String,Map<String,ExecutableElement>> javacalls =
1.90 - new HashMap<String,Map<String,ExecutableElement>>();
1.91 -
1.92 - @Override
1.93 - public Set<String> getSupportedAnnotationTypes() {
1.94 - Set<String> set = new HashSet<String>();
1.95 - set.add(JavaScriptBody.class.getName());
1.96 - set.add(JavaScriptResource.class.getName());
1.97 - return set;
1.98 - }
1.99 -
1.100 - @Override
1.101 - public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) {
1.102 - final Messager msg = processingEnv.getMessager();
1.103 - for (Element e : roundEnv.getElementsAnnotatedWith(JavaScriptBody.class)) {
1.104 - if (e.getKind() != ElementKind.METHOD && e.getKind() != ElementKind.CONSTRUCTOR) {
1.105 - continue;
1.106 - }
1.107 - ExecutableElement ee = (ExecutableElement)e;
1.108 - List<? extends VariableElement> params = ee.getParameters();
1.109 -
1.110 - JavaScriptBody jsb = e.getAnnotation(JavaScriptBody.class);
1.111 - if (jsb == null) {
1.112 - continue;
1.113 - }
1.114 - String[] arr = jsb.args();
1.115 - if (params.size() != arr.length) {
1.116 - msg.printMessage(Diagnostic.Kind.ERROR, "Number of args arguments does not match real arguments!", e);
1.117 - }
1.118 - if (!jsb.javacall() && jsb.body().contains(".@")) {
1.119 - msg.printMessage(Diagnostic.Kind.WARNING, "Usage of .@ usually requires javacall=true", e);
1.120 - }
1.121 - if (jsb.javacall()) {
1.122 - JsCallback verify = new VerifyCallback(e);
1.123 - try {
1.124 - verify.parse(jsb.body());
1.125 - } catch (IllegalStateException ex) {
1.126 - msg.printMessage(Diagnostic.Kind.ERROR, ex.getLocalizedMessage(), e);
1.127 - }
1.128 - }
1.129 - }
1.130 - for (Element e : roundEnv.getElementsAnnotatedWith(JavaScriptResource.class)) {
1.131 - JavaScriptResource r = e.getAnnotation(JavaScriptResource.class);
1.132 - if (r == null) {
1.133 - continue;
1.134 - }
1.135 - final String res;
1.136 - if (r.value().startsWith("/")) {
1.137 - res = r.value();
1.138 - } else {
1.139 - res = findPkg(e).replace('.', '/') + "/" + r.value();
1.140 - }
1.141 -
1.142 - try {
1.143 - FileObject os = processingEnv.getFiler().getResource(StandardLocation.SOURCE_PATH, "", res);
1.144 - os.openInputStream().close();
1.145 - } catch (IOException ex1) {
1.146 - try {
1.147 - FileObject os2 = processingEnv.getFiler().getResource(StandardLocation.CLASS_OUTPUT, "", res);
1.148 - os2.openInputStream().close();
1.149 - } catch (IOException ex2) {
1.150 - msg.printMessage(Diagnostic.Kind.ERROR, "Cannot find " + res + " in " + res + " package", e);
1.151 - }
1.152 - }
1.153 - }
1.154 -
1.155 - if (roundEnv.processingOver()) {
1.156 - generateCallbackClass(javacalls);
1.157 - javacalls.clear();
1.158 - }
1.159 - return true;
1.160 - }
1.161 -
1.162 - @Override
1.163 - public Iterable<? extends Completion> getCompletions(Element e,
1.164 - AnnotationMirror annotation, ExecutableElement member, String userText
1.165 - ) {
1.166 - StringBuilder sb = new StringBuilder();
1.167 - if (e.getKind() == ElementKind.METHOD && member.getSimpleName().contentEquals("args")) {
1.168 - ExecutableElement ee = (ExecutableElement) e;
1.169 - String sep = "";
1.170 - sb.append("{ ");
1.171 - for (VariableElement ve : ee.getParameters()) {
1.172 - sb.append(sep).append('"').append(ve.getSimpleName())
1.173 - .append('"');
1.174 - sep = ", ";
1.175 - }
1.176 - sb.append(" }");
1.177 - return Collections.nCopies(1, Completions.of(sb.toString()));
1.178 - }
1.179 - return null;
1.180 - }
1.181 -
1.182 - private class VerifyCallback extends JsCallback {
1.183 - private final Element e;
1.184 - public VerifyCallback(Element e) {
1.185 - this.e = e;
1.186 - }
1.187 -
1.188 - @Override
1.189 - protected CharSequence callMethod(String ident, String fqn, String method, String params) {
1.190 - final TypeElement type = processingEnv.getElementUtils().getTypeElement(fqn);
1.191 - if (type == null) {
1.192 - processingEnv.getMessager().printMessage(Diagnostic.Kind.ERROR,
1.193 - "Callback to non-existing class " + fqn, e
1.194 - );
1.195 - return "";
1.196 - }
1.197 - ExecutableElement found = null;
1.198 - StringBuilder foundParams = new StringBuilder();
1.199 - for (Element m : type.getEnclosedElements()) {
1.200 - if (m.getKind() != ElementKind.METHOD) {
1.201 - continue;
1.202 - }
1.203 - if (m.getSimpleName().contentEquals(method)) {
1.204 - String paramTypes = findParamTypes((ExecutableElement)m);
1.205 - if (paramTypes.equals(params)) {
1.206 - found = (ExecutableElement) m;
1.207 - break;
1.208 - }
1.209 - foundParams.append(paramTypes).append("\n");
1.210 - }
1.211 - }
1.212 - if (found == null) {
1.213 - if (foundParams.length() == 0) {
1.214 - processingEnv.getMessager().printMessage(Diagnostic.Kind.ERROR,
1.215 - "Callback to class " + fqn + " with unknown method " + method, e
1.216 - );
1.217 - } else {
1.218 - processingEnv.getMessager().printMessage(Diagnostic.Kind.ERROR,
1.219 - "Callback to " + fqn + "." + method + " with wrong parameters: " +
1.220 - params + ". Only known parameters are " + foundParams, e
1.221 - );
1.222 - }
1.223 - } else {
1.224 - Map<String,ExecutableElement> mangledOnes = javacalls.get(findPkg(e));
1.225 - if (mangledOnes == null) {
1.226 - mangledOnes = new TreeMap<String, ExecutableElement>();
1.227 - javacalls.put(findPkg(e), mangledOnes);
1.228 - }
1.229 - String mangled = JsCallback.mangle(fqn, method, findParamTypes(found));
1.230 - mangledOnes.put(mangled, found);
1.231 - }
1.232 - return "";
1.233 - }
1.234 -
1.235 - private String findParamTypes(ExecutableElement method) {
1.236 - ExecutableType t = (ExecutableType) method.asType();
1.237 - StringBuilder sb = new StringBuilder();
1.238 - sb.append('(');
1.239 - for (TypeMirror tm : t.getParameterTypes()) {
1.240 - if (tm.getKind().isPrimitive()) {
1.241 - switch (tm.getKind()) {
1.242 - case INT: sb.append('I'); break;
1.243 - case BOOLEAN: sb.append('Z'); break;
1.244 - case BYTE: sb.append('B'); break;
1.245 - case CHAR: sb.append('C'); break;
1.246 - case SHORT: sb.append('S'); break;
1.247 - case DOUBLE: sb.append('D'); break;
1.248 - case FLOAT: sb.append('F'); break;
1.249 - case LONG: sb.append('J'); break;
1.250 - default:
1.251 - throw new IllegalStateException("Uknown " + tm.getKind());
1.252 - }
1.253 - } else {
1.254 - while (tm.getKind() == TypeKind.ARRAY) {
1.255 - sb.append('[');
1.256 - tm = ((ArrayType)tm).getComponentType();
1.257 - }
1.258 - sb.append('L');
1.259 - sb.append(tm.toString().replace('.', '/'));
1.260 - sb.append(';');
1.261 - }
1.262 - }
1.263 - sb.append(')');
1.264 - return sb.toString();
1.265 - }
1.266 - }
1.267 -
1.268 - private void generateCallbackClass(Map<String,Map<String, ExecutableElement>> process) {
1.269 - for (Map.Entry<String, Map<String, ExecutableElement>> pkgEn : process.entrySet()) {
1.270 - String pkgName = pkgEn.getKey();
1.271 - Map<String, ExecutableElement> map = pkgEn.getValue();
1.272 - StringBuilder source = new StringBuilder();
1.273 - source.append("package ").append(pkgName).append(";\n");
1.274 - source.append("public final class $JsCallbacks$ {\n");
1.275 - source.append(" static final $JsCallbacks$ VM = new $JsCallbacks$(null);\n");
1.276 - source.append(" private final org.apidesign.html.boot.spi.Fn.Presenter p;\n");
1.277 - source.append(" private $JsCallbacks$ last;\n");
1.278 - source.append(" private $JsCallbacks$(org.apidesign.html.boot.spi.Fn.Presenter p) {\n");
1.279 - source.append(" this.p = p;\n");
1.280 - source.append(" }\n");
1.281 - source.append(" final $JsCallbacks$ current() {\n");
1.282 - source.append(" org.apidesign.html.boot.spi.Fn.Presenter now = org.apidesign.html.boot.spi.Fn.activePresenter();\n");
1.283 - source.append(" if (now == p) return this;\n");
1.284 - source.append(" if (last != null && now == last.p) return last;\n");
1.285 - source.append(" return last = new $JsCallbacks$(now);\n");
1.286 - source.append(" }\n");
1.287 - for (Map.Entry<String, ExecutableElement> entry : map.entrySet()) {
1.288 - final String mangled = entry.getKey();
1.289 - final ExecutableElement m = entry.getValue();
1.290 - final boolean isStatic = m.getModifiers().contains(Modifier.STATIC);
1.291 -
1.292 - source.append("\n public java.lang.Object ")
1.293 - .append(mangled)
1.294 - .append("(");
1.295 -
1.296 - String sep = "";
1.297 - if (!isStatic) {
1.298 - source.append(((TypeElement)m.getEnclosingElement()).getQualifiedName());
1.299 - source.append(" self");
1.300 - sep = ", ";
1.301 - }
1.302 -
1.303 - int cnt = 0;
1.304 - for (VariableElement ve : m.getParameters()) {
1.305 - source.append(sep);
1.306 - source.append(ve.asType());
1.307 - source.append(" arg").append(++cnt);
1.308 - sep = ", ";
1.309 - }
1.310 - source.append(") throws Throwable {\n");
1.311 - if (processingEnv.getSourceVersion().compareTo(SourceVersion.RELEASE_7) >= 0) {
1.312 - source.append(" try (java.io.Closeable a = org.apidesign.html.boot.spi.Fn.activate(p)) { \n");
1.313 - } else {
1.314 - source.append(" java.io.Closeable a = org.apidesign.html.boot.spi.Fn.activate(p); try {\n");
1.315 - }
1.316 - source.append(" ");
1.317 - if (m.getReturnType().getKind() != TypeKind.VOID) {
1.318 - source.append("return ");
1.319 - }
1.320 - if (isStatic) {
1.321 - source.append(((TypeElement)m.getEnclosingElement()).getQualifiedName());
1.322 - source.append('.');
1.323 - } else {
1.324 - source.append("self.");
1.325 - }
1.326 - source.append(m.getSimpleName());
1.327 - source.append("(");
1.328 - cnt = 0;
1.329 - sep = "";
1.330 - for (VariableElement ve : m.getParameters()) {
1.331 - source.append(sep);
1.332 - source.append("arg").append(++cnt);
1.333 - sep = ", ";
1.334 - }
1.335 - source.append(");\n");
1.336 - if (m.getReturnType().getKind() == TypeKind.VOID) {
1.337 - source.append(" return null;\n");
1.338 - }
1.339 - if (processingEnv.getSourceVersion().compareTo(SourceVersion.RELEASE_7) >= 0) {
1.340 - source.append(" }\n");
1.341 - } else {
1.342 -
1.343 - source.append(" } finally {\n");
1.344 - source.append(" a.close();\n");
1.345 - source.append(" }\n");
1.346 - }
1.347 - source.append(" }\n");
1.348 - }
1.349 - source.append("}\n");
1.350 - final String srcName = pkgName + ".$JsCallbacks$";
1.351 - try {
1.352 - Writer w = processingEnv.getFiler().createSourceFile(srcName,
1.353 - map.values().toArray(new Element[map.size()])
1.354 - ).openWriter();
1.355 - w.write(source.toString());
1.356 - w.close();
1.357 - } catch (IOException ex) {
1.358 - processingEnv.getMessager().printMessage(
1.359 - Diagnostic.Kind.ERROR, "Can't write " + srcName + ": " + ex.getMessage()
1.360 - );
1.361 - }
1.362 - }
1.363 - }
1.364 -
1.365 - private static String findPkg(Element e) {
1.366 - while (e.getKind() != ElementKind.PACKAGE) {
1.367 - e = e.getEnclosingElement();
1.368 - }
1.369 - return ((PackageElement)e).getQualifiedName().toString();
1.370 - }
1.371 -
1.372 -}