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test/tools/javac/api/TestGetElementReference.java@8dd528992c15 (annotated)

test/tools/javac/api/TestGetElementReference.java

Fri, 10 May 2013 15:15:50 +0200

author

jlahoda

date

Fri, 10 May 2013 15:15:50 +0200

changeset 1734

8dd528992c15

parent 0

959103a6100f

permissions

-rw-r--r--

8012929: Trees.getElement should work not only for declaration trees, but also for use-trees
Reviewed-by: jjg
Contributed-by: Dusan Balek <dbalek@netbeans.org>, Jan Lahoda <jlahoda@netbeans.org>

aoqi@0	1	/*
aoqi@0	2	* Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
aoqi@0	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0	4	*
aoqi@0	5	* This code is free software; you can redistribute it and/or modify it
aoqi@0	6	* under the terms of the GNU General Public License version 2 only, as
aoqi@0	7	* published by the Free Software Foundation.
aoqi@0	8	*
aoqi@0	9	* This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
aoqi@0	12	* version 2 for more details (a copy is included in the LICENSE file that
aoqi@0	13	* accompanied this code).
aoqi@0	14	*
aoqi@0	15	* You should have received a copy of the GNU General Public License version
aoqi@0	16	* 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0	18	*
aoqi@0	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0	20	* or visit www.oracle.com if you need additional information or have any
aoqi@0	21	* questions.
aoqi@0	22	*/
aoqi@0	23
aoqi@0	24	/*
aoqi@0	25	* @test
aoqi@0	26	* @bug 8012929
aoqi@0	27	* @summary Trees.getElement should work not only for declaration trees, but also for use-trees
aoqi@0	28	* @build TestGetElementReference
aoqi@0	29	* @run main TestGetElementReference
aoqi@0	30	*/
aoqi@0	31
aoqi@0	32	import com.sun.source.tree.CompilationUnitTree;
aoqi@0	33	import com.sun.source.tree.Tree;
aoqi@0	34	import com.sun.source.util.*;
aoqi@0	35	import java.io.File;
aoqi@0	36	import java.io.IOException;
aoqi@0	37	import java.net.URI;
aoqi@0	38	import java.util.Arrays;
aoqi@0	39	import java.util.regex.Matcher;
aoqi@0	40	import java.util.regex.Pattern;
aoqi@0	41	import javax.lang.model.element.Element;
aoqi@0	42	import javax.tools.Diagnostic;
aoqi@0	43	import javax.tools.DiagnosticCollector;
aoqi@0	44	import javax.tools.JavaFileObject;
aoqi@0	45	import javax.tools.SimpleJavaFileObject;
aoqi@0	46	import javax.tools.StandardJavaFileManager;
aoqi@0	47	import javax.tools.ToolProvider;
aoqi@0	48
aoqi@0	49	public class TestGetElementReference {
aoqi@0	50
aoqi@0	51	public static void main(String... args) throws IOException {
aoqi@0	52	File source = new File(System.getProperty("test.src", "."), "TestGetElementReferenceData.java").getAbsoluteFile();
aoqi@0	53	StandardJavaFileManager fm = ToolProvider.getSystemJavaCompiler().getStandardFileManager(null, null, null);
aoqi@0	54	DiagnosticCollector<JavaFileObject> diagnostics = new DiagnosticCollector<>();
aoqi@0	55	JavacTask ct = (JavacTask) ToolProvider.getSystemJavaCompiler().getTask(null, null, diagnostics, Arrays.asList("-Xjcov", "-source", "1.8"), null, fm.getJavaFileObjects(source));
aoqi@0	56	Trees trees = Trees.instance(ct);
aoqi@0	57	CompilationUnitTree cut = ct.parse().iterator().next();
aoqi@0	58
aoqi@0	59	ct.analyze();
aoqi@0	60
aoqi@0	61	for (Diagnostic<? extends JavaFileObject> d : diagnostics.getDiagnostics()) {
aoqi@0	62	if (d.getKind() == Diagnostic.Kind.ERROR) {
aoqi@0	63	throw new IllegalStateException("Should have been attributed without errors: " + diagnostics.getDiagnostics());
aoqi@0	64	}
aoqi@0	65	}
aoqi@0	66
aoqi@0	67	Pattern p = Pattern.compile("/\\*getElement:(.*?)\\*/");
aoqi@0	68	Matcher m = p.matcher(cut.getSourceFile().getCharContent(false));
aoqi@0	69
aoqi@0	70	while (m.find()) {
aoqi@0	71	TreePath tp = pathFor(trees, cut, m.start() - 1);
aoqi@0	72	Element found = trees.getElement(tp);
aoqi@0	73	String expected = m.group(1);
aoqi@0	74	String actual = found != null ? found.getKind() + ":" + symbolToString(found) : "<null>";
aoqi@0	75
aoqi@0	76	if (!expected.equals(actual)) {
aoqi@0	77	throw new IllegalStateException("expected=" + expected + "; actual=" + actual);
aoqi@0	78	}
aoqi@0	79	}
aoqi@0	80	}
aoqi@0	81
aoqi@0	82	private static TreePath pathFor(final Trees trees, final CompilationUnitTree cut, final int pos) {
aoqi@0	83	final TreePath[] result = new TreePath[1];
aoqi@0	84
aoqi@0	85	new TreePathScanner<Void, Void>() {
aoqi@0	86	@Override public Void scan(Tree node, Void p) {
aoqi@0	87	if ( node != null
aoqi@0	88	&& trees.getSourcePositions().getStartPosition(cut, node) <= pos
aoqi@0	89	&& pos <= trees.getSourcePositions().getEndPosition(cut, node)) {
aoqi@0	90	result[0] = new TreePath(getCurrentPath(), node);
aoqi@0	91	return super.scan(node, p);
aoqi@0	92	}
aoqi@0	93	return null;
aoqi@0	94	}
aoqi@0	95	}.scan(cut, null);
aoqi@0	96
aoqi@0	97	return result[0];
aoqi@0	98	}
aoqi@0	99
aoqi@0	100	private static String symbolToString(Element el) {
aoqi@0	101	switch (el.getKind()) {
aoqi@0	102	case METHOD: return symbolToString(el.getEnclosingElement()) + "." + el.toString();
aoqi@0	103	case CONSTRUCTOR: return symbolToString(el.getEnclosingElement().getEnclosingElement()) + "." + el.toString();
aoqi@0	104	default:
aoqi@0	105	return el.toString();
aoqi@0	106	}
aoqi@0	107	}
aoqi@0	108
aoqi@0	109	static class TestFileObject extends SimpleJavaFileObject {
aoqi@0	110	private final String text;
aoqi@0	111	public TestFileObject(String text) {
aoqi@0	112	super(URI.create("myfo:/Test.java"), JavaFileObject.Kind.SOURCE);
aoqi@0	113	this.text = text;
aoqi@0	114	}
aoqi@0	115	@Override public CharSequence getCharContent(boolean ignoreEncodingErrors) {
aoqi@0	116	return text;
aoqi@0	117	}
aoqi@0	118	}
aoqi@0	119
aoqi@0	120	}