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8068488: Facilitate extension of the javac parser -- missing modifier

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Reviewed-by: jjg
This commit is contained in:
Robert Field 2015-01-16 20:03:30 -08:00
parent f022a99128
commit 6c9d4861a9
4 changed files with 402 additions and 1 deletions
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93
langtools/test/tools/javac/parser/extend/JavacExtensionTest.java Normal file
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/*
* Copyright (c) 2015, Oracle and/or its affiliates. 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.
*
* 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
import com.sun.source.tree.CompilationUnitTree;
import com.sun.source.tree.Tree;
import com.sun.source.util.SourcePositions;
import com.sun.source.util.TreePath;
import com.sun.source.util.Trees;
import com.sun.tools.javac.api.JavacTaskImpl;
import com.sun.tools.javac.api.JavacTool;
import com.sun.tools.javac.util.Context;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Iterator;
import java.util.List;
import javax.lang.model.element.Element;
import javax.tools.Diagnostic;
import javax.tools.DiagnosticCollector;
import javax.tools.JavaCompiler;
import javax.tools.JavaFileManager;
import javax.tools.JavaFileObject;
import javax.tools.ToolProvider;
import javax.tools.StandardJavaFileManager;
import com.sun.source.tree.ImportTree;
import java.util.Collections;
import java.io.PrintWriter;
import com.sun.source.tree.VariableTree;
import static javax.tools.StandardLocation.CLASS_OUTPUT;
/*
* @test
* @bug 8067384 8068488
* @summary Verify that JavacParser can be extended
*/
public class JavacExtensionTest {
public static void main(String[] args) throws Exception {
PrintWriter pw = new PrintWriter("trialSource.java", "UTF-8");
pw.println("int x = 9;");
pw.close();
List<? extends Tree> defs = parse("trialSource.java");
if (defs.size() != 1) {
throw new AssertionError("Expected only one def, got: " + defs.size());
}
Tree tree = defs.get(0);
if (tree instanceof VariableTree) {
System.out.println("Passes! --- " + tree);
} else {
throw new AssertionError("Expected VariableTree, got: " + tree);
}
}
static List<? extends Tree> parse(String srcfile) throws Exception {
JavaCompiler compiler = ToolProvider.getSystemJavaCompiler();
StandardJavaFileManager fileManager = compiler.getStandardFileManager(null, null, null);
Iterable<? extends JavaFileObject> fileObjects = fileManager.getJavaFileObjects(srcfile);
String classPath = System.getProperty("java.class.path");
List<String> options = Arrays.asList("-classpath", classPath);
DiagnosticCollector<JavaFileObject> diagnostics = new DiagnosticCollector<>();
Context context = new Context();
JavacTaskImpl task = (JavacTaskImpl) ((JavacTool) compiler).getTask(null, null,
diagnostics, options, null, fileObjects, context);
TrialParserFactory.instance(context);
Iterable<? extends CompilationUnitTree> asts = task.parse();
Iterator<? extends CompilationUnitTree> it = asts.iterator();
if (it.hasNext()) {
CompilationUnitTree cut = it.next();
return cut.getTypeDecls();
} else {
throw new AssertionError("Expected compilation unit");
}
}
}