1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/boot/src/main/java/org/netbeans/html/boot/impl/JavaScriptProcesor.java Mon Dec 16 16:59:43 2013 +0100
1.3 @@ -0,0 +1,369 @@
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.netbeans.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 +}