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"nb-javac" is a patched version of OpenJDK "javac", i.e., the Java compiler. This has long been part of NetBeans, providing a highly tuned Java compiler specifically for the Java editor i.e., parsing and lexing for features such as syntax coloring, code completion.
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/*
* Copyright 2003-2004 Sun Microsystems, Inc. All Rights Reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Sun designates this
* particular file as subject to the "Classpath" exception as provided
* by Sun in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
* CA 95054 USA or visit www.sun.com if you need additional information or
* have any questions.
*/
package global;
import com.sun.source.tree.CompilationUnitTree;
import com.sun.source.tree.IdentifierTree;
import com.sun.source.tree.VariableTree;
import com.sun.source.util.JavacTask;
import com.sun.source.util.TreePath;
import com.sun.source.util.TreePathScanner;
import com.sun.source.util.Trees;
import com.sun.tools.javac.code.Scope;
import com.sun.tools.javac.code.Symbol;
import com.sun.tools.javac.code.Type;
import java.io.IOException;
import java.net.URI;
import java.util.Arrays;
import javax.lang.model.element.Element;
import javax.lang.model.element.TypeElement;
import javax.lang.model.element.VariableElement;
import javax.lang.model.type.TypeKind;
import javax.lang.model.type.TypeMirror;
import javax.lang.model.util.ElementFilter;
import javax.tools.JavaCompiler;
import javax.tools.JavaFileObject;
import javax.tools.SimpleJavaFileObject;
import javax.tools.ToolProvider;
import junit.framework.TestCase;
public class ScopeTest extends TestCase {
public ScopeTest(String name) {
super(name);
}
static class MyFileObject extends SimpleJavaFileObject {
private String text;
public MyFileObject(String text) {
super(URI.create("myfo:/Test.java"), JavaFileObject.Kind.SOURCE);
this.text = text;
}
@Override
public CharSequence getCharContent(boolean ignoreEncodingErrors) {
return text;
}
}
public void testPositionForSuperConstructorCalls() throws IOException {
final String bootPath = System.getProperty("sun.boot.class.path"); //NOI18N
final String version = System.getProperty("java.vm.specification.version"); //NOI18N
final JavaCompiler tool = ToolProvider.getSystemJavaCompiler();
assert tool != null;
String code = "package test;\n" +
"public class Test {\n" +
" private void x() {\n" +
" RequestProcessor.post(new Runnable() {\n" +
" public void run() {\n" +
" String test = null;\n" +
" test.length();\n" +
" }\n" +
" });\n" +
" }\n" +
"}\n";
JavacTask ct = (JavacTask)tool.getTask(null, null, null, Arrays.asList("-bootclasspath", bootPath, "-source", version, "-Xjcov"), null, Arrays.asList(new MyFileObject(code)));
Iterable trees = ct.parse();
ct.analyze();
final Trees t = Trees.instance(ct);
new TreePathScanner() {
@Override
public Void visitIdentifier(IdentifierTree node, Void p) {
if ("RequestProcessor".equals(node.getName().toString())) {
t.getScope(getCurrentPath());
}
return super.visitIdentifier(node, p);
}
}.scan(trees.iterator().next(), null);
new TreePathScanner() {
@Override
public Void visitVariable(VariableTree node, Void p) {
Element e = t.getElement(getCurrentPath());
assertNotNull(t.getPath(e));
return super.visitVariable(node, p);
}
}.scan(trees.iterator().next(), null);
}
public void test142924() throws IOException {
final String bootPath = System.getProperty("sun.boot.class.path"); //NOI18N
final String version = System.getProperty("java.vm.specification.version"); //NOI18N
final JavaCompiler tool = ToolProvider.getSystemJavaCompiler();
assert tool != null;
String code = "package test;\n" +
"public class Test {\n" +
" public Unresolved field;" +
"}\n";
JavacTask ct = (JavacTask)tool.getTask(null, null, null, Arrays.asList("-bootclasspath", bootPath, "-source", version, "-Xjcov"), null, Arrays.asList(new MyFileObject(code)));
ct.parse();
ct.analyze();
TypeElement te = ct.getElements().getTypeElement("test.Test");
for (VariableElement field : ElementFilter.fieldsIn(te.getEnclosedElements())) {
TypeMirror type = field.asType();
if (type.getKind() == TypeKind.ERROR) {
Type.ErrorType et = (Type.ErrorType)type;
for (Symbol symbol : et.tsym.members().getSymbolsByName(et.tsym.name.table.fromString("XYZ")));
}
}
}
public void testScope180164() throws IOException {
final String bootPath = System.getProperty("sun.boot.class.path"); //NOI18N
final String version = System.getProperty("java.vm.specification.version"); //NOI18N
final JavaCompiler tool = ToolProvider.getSystemJavaCompiler();
assert tool != null;
String code = "package test;\n" +
"public class Test {\n" +
" private final Object o = new Runnable() {\n" +
" public void run() {\n" +
" String u = null;\n" +
" String n = u;\n" +
" }\n" +
" };\n" +
"}\n";
final JavacTask ct = (JavacTask)tool.getTask(null, null, null, Arrays.asList("-bootclasspath", bootPath, "-source", version, "-Xjcov"), null, Arrays.asList(new MyFileObject(code)));
Iterable cut = ct.parse();
ct.analyze();
final TreePath[] paths = new TreePath[1];
final Element[] el = new Element[1];
new TreePathScanner() {
@Override
public Void visitIdentifier(IdentifierTree node, Void p) {
if (node.getName().contentEquals("u")) {
paths[0] = getCurrentPath();
el[0] = Trees.instance(ct).getElement(getCurrentPath());
}
return super.visitIdentifier(node, p);
}
}.scan(cut, null);
assertNotNull(paths[0]);
assertNotNull(Trees.instance(ct).getPath(el[0]));
Trees.instance(ct).getScope(paths[0]);
assertNotNull(Trees.instance(ct).getPath(el[0]));
}
}