langtools/test/tools/javac/parser/extend/JavacExtensionTest.java
changeset 28587 ce5606145ea3
child 30730 d3ce7619db2c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/langtools/test/tools/javac/parser/extend/JavacExtensionTest.java	Fri Jan 16 20:03:30 2015 -0800
@@ -0,0 +1,93 @@
+/*
+ * 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");
+        }
+    }
+}