ide/editor/src/main/java/org/apidesign/bck2brwsr/ide/editor/JSEmbeddingProvider.java
1.1 --- a/ide/editor/src/main/java/org/apidesign/bck2brwsr/ide/editor/JSEmbeddingProvider.java Tue Feb 11 10:48:24 2014 +0100
1.2 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000
1.3 @@ -1,188 +0,0 @@
1.4 -/**
1.5 - * Back 2 Browser Bytecode Translator
1.6 - * Copyright (C) 2012 Jaroslav Tulach <jaroslav.tulach@apidesign.org>
1.7 - *
1.8 - * This program is free software: you can redistribute it and/or modify
1.9 - * it under the terms of the GNU General Public License as published by
1.10 - * the Free Software Foundation, version 2 of the License.
1.11 - *
1.12 - * This program is distributed in the hope that it will be useful,
1.13 - * but WITHOUT ANY WARRANTY; without even the implied warranty of
1.14 - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
1.15 - * GNU General Public License for more details.
1.16 - *
1.17 - * You should have received a copy of the GNU General Public License
1.18 - * along with this program. Look for COPYING file in the top folder.
1.19 - * If not, see http://opensource.org/licenses/GPL-2.0.
1.20 - */
1.21 -package org.apidesign.bck2brwsr.ide.editor;
1.22 -
1.23 -import com.sun.source.tree.AnnotationTree;
1.24 -import com.sun.source.tree.AssignmentTree;
1.25 -import com.sun.source.tree.CompilationUnitTree;
1.26 -import com.sun.source.tree.ExpressionTree;
1.27 -import com.sun.source.tree.LiteralTree;
1.28 -import com.sun.source.tree.MethodTree;
1.29 -import com.sun.source.util.SourcePositions;
1.30 -import com.sun.source.util.TreePath;
1.31 -import com.sun.source.util.TreePathScanner;
1.32 -import com.sun.source.util.Trees;
1.33 -import java.io.IOException;
1.34 -import java.util.ArrayList;
1.35 -import java.util.Collection;
1.36 -import java.util.Collections;
1.37 -import java.util.List;
1.38 -import java.util.concurrent.atomic.AtomicBoolean;
1.39 -import javax.lang.model.element.TypeElement;
1.40 -import javax.swing.text.Document;
1.41 -import org.netbeans.api.editor.mimelookup.MimeRegistration;
1.42 -import org.netbeans.api.java.source.CompilationInfo;
1.43 -import org.netbeans.api.java.source.JavaParserResultTask;
1.44 -import org.netbeans.api.java.source.JavaSource;
1.45 -import org.netbeans.api.lexer.Language;
1.46 -import org.netbeans.api.lexer.TokenHierarchy;
1.47 -import org.netbeans.api.lexer.TokenSequence;
1.48 -import org.netbeans.modules.parsing.api.Snapshot;
1.49 -import org.netbeans.modules.parsing.spi.Parser;
1.50 -import org.netbeans.modules.parsing.spi.Scheduler;
1.51 -import org.netbeans.modules.parsing.spi.SchedulerEvent;
1.52 -import org.netbeans.modules.parsing.spi.SchedulerTask;
1.53 -import org.netbeans.modules.parsing.spi.TaskFactory;
1.54 -import org.openide.util.Exceptions;
1.55 -
1.56 -/**
1.57 - *
1.58 - * @author Tomas Zezula
1.59 - */
1.60 -public final class JSEmbeddingProvider extends JavaParserResultTask<Parser.Result> {
1.61 -
1.62 - private static final int PRIORITY = 1000;
1.63 - private static final String JS_ANNOTATION = "org.apidesign.bck2brwsr.core.JavaScriptBody"; //NOI18N
1.64 - private static final String BODY = "body"; //NOI18N
1.65 - private static final String JAVA_MIME_TYPE = "text/x-java"; //NOI18N
1.66 - private static final String JAVASCRIPT_MIME_TYPE = "text/javascript"; //NOI18N
1.67 - private final AtomicBoolean canceled = new AtomicBoolean();
1.68 -
1.69 - private JSEmbeddingProvider() {
1.70 - super(JavaSource.Phase.ELEMENTS_RESOLVED);
1.71 - }
1.72 -
1.73 - @Override
1.74 - public int getPriority() {
1.75 - return PRIORITY;
1.76 - }
1.77 -
1.78 - @Override
1.79 - public void cancel() {
1.80 - canceled.set(true);
1.81 - }
1.82 -
1.83 - @Override
1.84 - public Class<? extends Scheduler> getSchedulerClass() {
1.85 - return Scheduler.EDITOR_SENSITIVE_TASK_SCHEDULER;
1.86 - }
1.87 -
1.88 - @Override
1.89 - public void run(Parser.Result t, SchedulerEvent se) {
1.90 - canceled.set(false);
1.91 - final CompilationInfo ci = CompilationInfo.get(t);
1.92 - final CompilationUnitTree cu = ci.getCompilationUnit();
1.93 - final Trees trees = ci.getTrees();
1.94 - final SourcePositions sp = trees.getSourcePositions();
1.95 - final Finder f = new Finder(trees);
1.96 - final List<LiteralTree> result = new ArrayList<LiteralTree>();
1.97 - f.scan(cu, result);
1.98 - if (!result.isEmpty()) {
1.99 - try {
1.100 - final TokenHierarchy<Document> tk = TokenHierarchy.get(ci.getDocument());
1.101 - final Language<?> java = Language.find(JAVA_MIME_TYPE);
1.102 - final Language<?> javaScript = Language.find(JAVASCRIPT_MIME_TYPE);
1.103 - if (java != null && javaScript != null) {
1.104 - final TokenSequence<?> seq = tk.tokenSequence(java);
1.105 - if (seq != null) {
1.106 - for (LiteralTree lt : result) {
1.107 - final int start = (int) sp.getStartPosition(cu, lt);
1.108 - final int end = (int) sp.getEndPosition(cu, lt);
1.109 - seq.move(start);
1.110 - while (seq.moveNext() && seq.offset() < end) {
1.111 - seq.createEmbedding(javaScript, 1, 1, true);
1.112 - }
1.113 - }
1.114 - }
1.115 - }
1.116 - } catch (IOException ioe) {
1.117 - Exceptions.printStackTrace(ioe);
1.118 - }
1.119 - }
1.120 - }
1.121 -
1.122 -
1.123 -
1.124 -
1.125 - private static final class Finder extends TreePathScanner<Void, List<? super LiteralTree>> {
1.126 -
1.127 - private final Trees trees;
1.128 - private CompilationUnitTree cu;
1.129 - private boolean inEmbedding;
1.130 -
1.131 - Finder(final Trees trees) {
1.132 - this.trees = trees;
1.133 - }
1.134 -
1.135 - @Override
1.136 - public Void visitCompilationUnit(
1.137 - final CompilationUnitTree unit,
1.138 - final List p) {
1.139 - this.cu = unit;
1.140 - return super.visitCompilationUnit(unit, p);
1.141 - }
1.142 -
1.143 -
1.144 -
1.145 - @Override
1.146 - public Void visitMethod(
1.147 - final MethodTree m,
1.148 - final List<? super LiteralTree> p) {
1.149 - for (AnnotationTree a : m.getModifiers().getAnnotations()) {
1.150 - final TypeElement ae = (TypeElement) trees.getElement(TreePath.getPath(cu, a.getAnnotationType()));
1.151 - if (ae != null && JS_ANNOTATION.contentEquals(ae.getQualifiedName())) {
1.152 - final List<? extends ExpressionTree> args = a.getArguments();
1.153 - for (ExpressionTree kvp : args) {
1.154 - if (kvp instanceof AssignmentTree) {
1.155 - final AssignmentTree assignemt = (AssignmentTree) kvp;
1.156 - if (BODY.equals(assignemt.getVariable().toString())) {
1.157 - inEmbedding = true;
1.158 - try {
1.159 - scan(assignemt.getExpression(), p);
1.160 - } finally {
1.161 - inEmbedding = false;
1.162 - }
1.163 - }
1.164 - }
1.165 - }
1.166 - }
1.167 - }
1.168 - return null;
1.169 - }
1.170 -
1.171 - @Override
1.172 - public Void visitLiteral(LiteralTree node, List<? super LiteralTree> p) {
1.173 - if (inEmbedding) {
1.174 - p.add(node);
1.175 - }
1.176 - return super.visitLiteral(node, p);
1.177 - }
1.178 -
1.179 - }
1.180 -
1.181 - @MimeRegistration(
1.182 - service = TaskFactory.class,
1.183 - mimeType = JAVA_MIME_TYPE)
1.184 - public static final class Factory extends TaskFactory {
1.185 - @Override
1.186 - public Collection<? extends SchedulerTask> create(Snapshot snpsht) {
1.187 - return Collections.singleton(new JSEmbeddingProvider());
1.188 - }
1.189 - }
1.190 -
1.191 -}