1.1 --- a/dew/src/main/java/org/apidesign/bck2brwsr/dew/Compile.java Tue Feb 11 10:48:24 2014 +0100
1.2 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000
1.3 @@ -1,203 +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.dew;
1.22 -
1.23 -import java.io.ByteArrayInputStream;
1.24 -import java.io.ByteArrayOutputStream;
1.25 -import java.io.IOException;
1.26 -import java.io.InputStream;
1.27 -import java.io.OutputStream;
1.28 -import java.net.URI;
1.29 -import java.net.URISyntaxException;
1.30 -import java.util.ArrayList;
1.31 -import java.util.Arrays;
1.32 -import java.util.HashMap;
1.33 -import java.util.List;
1.34 -import java.util.Map;
1.35 -import java.util.regex.Matcher;
1.36 -import java.util.regex.Pattern;
1.37 -import javax.tools.Diagnostic;
1.38 -import javax.tools.DiagnosticListener;
1.39 -import javax.tools.FileObject;
1.40 -import javax.tools.ForwardingJavaFileManager;
1.41 -import javax.tools.JavaFileManager;
1.42 -import javax.tools.JavaFileObject;
1.43 -import javax.tools.JavaFileObject.Kind;
1.44 -import javax.tools.SimpleJavaFileObject;
1.45 -import javax.tools.StandardJavaFileManager;
1.46 -import javax.tools.StandardLocation;
1.47 -import javax.tools.ToolProvider;
1.48 -
1.49 -/**
1.50 - *
1.51 - * @author Jaroslav Tulach <jtulach@netbeans.org>
1.52 - */
1.53 -final class Compile implements DiagnosticListener<JavaFileObject> {
1.54 - private final List<Diagnostic<? extends JavaFileObject>> errors = new ArrayList<>();
1.55 - private final Map<String, byte[]> classes;
1.56 - private final String pkg;
1.57 - private final String cls;
1.58 - private final String html;
1.59 -
1.60 - private Compile(String html, String code) throws IOException {
1.61 - this.pkg = findPkg(code);
1.62 - this.cls = findCls(code);
1.63 - this.html = html;
1.64 - classes = compile(html, code);
1.65 - }
1.66 -
1.67 - /** Performs compilation of given HTML page and associated Java code
1.68 - */
1.69 - public static Compile create(String html, String code) throws IOException {
1.70 - return new Compile(html, code);
1.71 - }
1.72 -
1.73 - /** Checks for given class among compiled resources */
1.74 - public byte[] get(String res) {
1.75 - return classes.get(res);
1.76 - }
1.77 -
1.78 - /** Obtains errors created during compilation.
1.79 - */
1.80 - public List<Diagnostic<? extends JavaFileObject>> getErrors() {
1.81 - List<Diagnostic<? extends JavaFileObject>> err = new ArrayList<>();
1.82 - for (Diagnostic<? extends JavaFileObject> diagnostic : errors) {
1.83 - if (diagnostic.getKind() == Diagnostic.Kind.ERROR) {
1.84 - err.add(diagnostic);
1.85 - }
1.86 - }
1.87 - return err;
1.88 - }
1.89 -
1.90 - private Map<String, byte[]> compile(final String html, final String code) throws IOException {
1.91 - StandardJavaFileManager sjfm = ToolProvider.getSystemJavaCompiler().getStandardFileManager(this, null, null);
1.92 -
1.93 - final Map<String, ByteArrayOutputStream> class2BAOS = new HashMap<>();
1.94 -
1.95 - JavaFileObject file = new SimpleJavaFileObject(URI.create("mem://mem"), Kind.SOURCE) {
1.96 - @Override
1.97 - public CharSequence getCharContent(boolean ignoreEncodingErrors) throws IOException {
1.98 - return code;
1.99 - }
1.100 - };
1.101 - final JavaFileObject htmlFile = new SimpleJavaFileObject(URI.create("mem://mem2"), Kind.OTHER) {
1.102 - @Override
1.103 - public CharSequence getCharContent(boolean ignoreEncodingErrors) throws IOException {
1.104 - return html;
1.105 - }
1.106 -
1.107 - @Override
1.108 - public InputStream openInputStream() throws IOException {
1.109 - return new ByteArrayInputStream(html.getBytes());
1.110 - }
1.111 - };
1.112 -
1.113 - final URI scratch;
1.114 - try {
1.115 - scratch = new URI("mem://mem3");
1.116 - } catch (URISyntaxException ex) {
1.117 - throw new IOException(ex);
1.118 - }
1.119 -
1.120 - JavaFileManager jfm = new ForwardingJavaFileManager<JavaFileManager>(sjfm) {
1.121 - @Override
1.122 - public JavaFileObject getJavaFileForOutput(Location location, String className, Kind kind, FileObject sibling) throws IOException {
1.123 - if (kind == Kind.CLASS) {
1.124 - final ByteArrayOutputStream buffer = new ByteArrayOutputStream();
1.125 -
1.126 - class2BAOS.put(className.replace('.', '/') + ".class", buffer);
1.127 - return new SimpleJavaFileObject(sibling.toUri(), kind) {
1.128 - @Override
1.129 - public OutputStream openOutputStream() throws IOException {
1.130 - return buffer;
1.131 - }
1.132 - };
1.133 - }
1.134 -
1.135 - if (kind == Kind.SOURCE) {
1.136 - return new SimpleJavaFileObject(scratch/*sibling.toUri()*/, kind) {
1.137 - private final ByteArrayOutputStream data = new ByteArrayOutputStream();
1.138 - @Override
1.139 - public OutputStream openOutputStream() throws IOException {
1.140 - return data;
1.141 - }
1.142 -
1.143 - @Override
1.144 - public CharSequence getCharContent(boolean ignoreEncodingErrors) throws IOException {
1.145 - data.close();
1.146 - return new String(data.toByteArray());
1.147 - }
1.148 - };
1.149 - }
1.150 -
1.151 - throw new IllegalStateException();
1.152 - }
1.153 -
1.154 - @Override
1.155 - public FileObject getFileForInput(Location location, String packageName, String relativeName) throws IOException {
1.156 - if (location == StandardLocation.SOURCE_PATH) {
1.157 - if (packageName.equals(pkg)) {
1.158 - return htmlFile;
1.159 - }
1.160 - }
1.161 -
1.162 - return null;
1.163 - }
1.164 -
1.165 - };
1.166 -
1.167 - ToolProvider.getSystemJavaCompiler().getTask(null, jfm, this, /*XXX:*/Arrays.asList("-source", "1.7", "-target", "1.7"), null, Arrays.asList(file)).call();
1.168 -
1.169 - Map<String, byte[]> result = new HashMap<>();
1.170 -
1.171 - for (Map.Entry<String, ByteArrayOutputStream> e : class2BAOS.entrySet()) {
1.172 - result.put(e.getKey(), e.getValue().toByteArray());
1.173 - }
1.174 -
1.175 - return result;
1.176 - }
1.177 -
1.178 -
1.179 - @Override
1.180 - public void report(Diagnostic<? extends JavaFileObject> diagnostic) {
1.181 - errors.add(diagnostic);
1.182 - }
1.183 - private static String findPkg(String java) throws IOException {
1.184 - Pattern p = Pattern.compile("package\\p{javaWhitespace}*([\\p{Alnum}\\.]+)\\p{javaWhitespace}*;", Pattern.MULTILINE);
1.185 - Matcher m = p.matcher(java);
1.186 - if (!m.find()) {
1.187 - throw new IOException("Can't find package declaration in the java file");
1.188 - }
1.189 - String pkg = m.group(1);
1.190 - return pkg;
1.191 - }
1.192 - private static String findCls(String java) throws IOException {
1.193 - Pattern p = Pattern.compile("class\\p{javaWhitespace}*([\\p{Alnum}\\.]+)\\p{javaWhitespace}", Pattern.MULTILINE);
1.194 - Matcher m = p.matcher(java);
1.195 - if (!m.find()) {
1.196 - throw new IOException("Can't find package declaration in the java file");
1.197 - }
1.198 - String cls = m.group(1);
1.199 - return cls;
1.200 - }
1.201 -
1.202 - String getHtml() {
1.203 - String fqn = "'" + pkg + '.' + cls + "'";
1.204 - return html.replace("'${fqn}'", fqn);
1.205 - }
1.206 -}