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/*
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* To change this template, choose Tools | Templates
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* and open the template in the editor.
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*/
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package org.apidesign.bck2brwsr.dew;
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import java.io.IOException;
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import java.nio.charset.Charset;
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import java.util.ArrayList;
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import java.util.Collections;
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import java.util.Iterator;
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import java.util.List;
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import java.util.Locale;
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import java.util.Map;
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import java.util.Set;
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import java.util.regex.Matcher;
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import java.util.regex.Pattern;
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import javax.tools.Diagnostic;
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import javax.tools.DiagnosticListener;
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import javax.tools.FileObject;
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import javax.tools.JavaCompiler;
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import javax.tools.JavaCompiler.CompilationTask;
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import javax.tools.JavaFileManager;
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import javax.tools.JavaFileObject;
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import javax.tools.JavaFileObject.Kind;
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import javax.tools.StandardJavaFileManager;
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import javax.tools.StandardLocation;
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/**
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*
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* @author Jaroslav Tulach <jtulach@netbeans.org>
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*/
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final class Compile implements JavaFileManager, DiagnosticListener<JavaFileObject> {
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private final JFO jfo;
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private final String pkg;
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private StandardJavaFileManager delegate;
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private List<Diagnostic<? extends JavaFileObject>> errors = new ArrayList<>();
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public Compile(String pkg, JFO jfo) {
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this.pkg = pkg;
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this.jfo = jfo;
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}
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public static Map<String,byte[]> compile(String html, String java) throws IOException {
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JavaCompiler jc = javax.tools.ToolProvider.getSystemJavaCompiler();
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String pkg = findPkg(java);
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String cls = findCls(java);
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JFO jfo = new JFO(java, pkg.replace('.', '/') + '/' + cls + ".java");
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final Compile cmp = new Compile(pkg, jfo);
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cmp.delegate = jc.getStandardFileManager(cmp, Locale.ENGLISH, Charset.forName("UTF-8"));
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Set<String> toCmp = Collections.singleton(pkg + '.' + cls);
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Set<JFO> unit = Collections.singleton(jfo);
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CompilationTask task = jc.getTask(null, cmp, cmp, null, null, unit);
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if (task.call() != true) {
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throw new IOException("Compilation failed: " + cmp.errors);
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}
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return Collections.emptyMap();
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}
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@Override
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public ClassLoader getClassLoader(Location location) {
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return null;//Compile.class.getClassLoader();
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}
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@Override
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public Iterable<JavaFileObject> list(Location location, String packageName, Set<Kind> kinds, boolean recurse) throws IOException {
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if (location == StandardLocation.PLATFORM_CLASS_PATH) {
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return delegate.list(location, packageName, kinds, recurse);
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}
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if (location == StandardLocation.CLASS_PATH) {
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return delegate.list(location, packageName, kinds, recurse);
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}
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if (location == StandardLocation.SOURCE_PATH) {
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if (packageName.equals(pkg)) {
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return Collections.<JavaFileObject>singleton(jfo);
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}
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return Collections.emptyList();
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}
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throw new UnsupportedOperationException("Loc: " + location + " pkg: " + packageName + " kinds: " + kinds + " rec: " + recurse);
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}
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@Override
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public String inferBinaryName(Location location, JavaFileObject file) {
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if (file == jfo) {
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return pkg + "." + file.getName();
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}
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return delegate.inferBinaryName(location, file);
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}
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@Override
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public boolean isSameFile(FileObject a, FileObject b) {
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throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
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}
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@Override
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public boolean handleOption(String current, Iterator<String> remaining) {
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throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
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}
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@Override
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public boolean hasLocation(Location location) {
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return true;
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}
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@Override
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public JavaFileObject getJavaFileForInput(Location location, String className, Kind kind) throws IOException {
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throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
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}
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@Override
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public JavaFileObject getJavaFileForOutput(Location location, String className, Kind kind, FileObject sibling) throws IOException {
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throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
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}
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@Override
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public FileObject getFileForInput(Location location, String packageName, String relativeName) throws IOException {
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throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
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}
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@Override
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public FileObject getFileForOutput(Location location, String packageName, String relativeName, FileObject sibling) throws IOException {
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throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
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}
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@Override
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public void flush() throws IOException {
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}
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@Override
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public void close() throws IOException {
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throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
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}
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@Override
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public int isSupportedOption(String option) {
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throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
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}
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@Override
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public void report(Diagnostic<? extends JavaFileObject> diagnostic) {
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errors.add(diagnostic);
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}
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private static String findPkg(String java) throws IOException {
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Pattern p = Pattern.compile("package\\p{javaWhitespace}*([\\p{Alnum}\\.]+)\\p{javaWhitespace}*;", Pattern.MULTILINE);
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Matcher m = p.matcher(java);
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if (!m.find()) {
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throw new IOException("Can't find package declaration in the java file");
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}
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String pkg = m.group(1);
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return pkg;
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}
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private static String findCls(String java) throws IOException {
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Pattern p = Pattern.compile("class\\p{javaWhitespace}*([\\p{Alnum}\\.]+)\\p{javaWhitespace}", Pattern.MULTILINE);
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Matcher m = p.matcher(java);
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if (!m.find()) {
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throw new IOException("Can't find package declaration in the java file");
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}
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String cls = m.group(1);
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return cls;
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}
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}
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