aoqi@0: /*
aoqi@0:  * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved.
aoqi@0:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0:  *
aoqi@0:  * This code is free software; you can redistribute it and/or modify it
aoqi@0:  * under the terms of the GNU General Public License version 2 only, as
aoqi@0:  * published by the Free Software Foundation.
aoqi@0:  *
aoqi@0:  * This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
aoqi@0:  * version 2 for more details (a copy is included in the LICENSE file that
aoqi@0:  * accompanied this code).
aoqi@0:  *
aoqi@0:  * You should have received a copy of the GNU General Public License version
aoqi@0:  * 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0:  *
aoqi@0:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0:  * or visit www.oracle.com if you need additional information or have any
aoqi@0:  * questions.
aoqi@0:  */
aoqi@0: 
aoqi@0: /*
aoqi@0:  * @test
aoqi@0:  * @bug 6993305
aoqi@0:  * @summary starting position of a method without modifiers and with type parameters is incorrect
aoqi@0:  */
aoqi@0: 
aoqi@0: import java.io.File;
aoqi@0: import javax.tools.JavaFileObject;
aoqi@0: import javax.tools.StandardJavaFileManager;
aoqi@0: 
aoqi@0: import com.sun.source.tree.CompilationUnitTree;
aoqi@0: import com.sun.source.tree.MethodTree;
aoqi@0: import com.sun.source.util.JavacTask;
aoqi@0: import com.sun.source.util.SourcePositions;
aoqi@0: import com.sun.source.util.TreeScanner;
aoqi@0: import com.sun.source.util.Trees;
aoqi@0: import com.sun.tools.javac.api.JavacTool;
aoqi@0: import java.io.IOException;
aoqi@0: 
aoqi@0: /*
aoqi@0:  * Test verifies the starting position of all methods by computing the start position
aoqi@0:  * of each method as the first non-white character on the first line containing
aoqi@0:  * (" " + methodName + "("), and then comparing this value against the reported
aoqi@0:  * value in the SourcePositions table.
aoqi@0:  */
aoqi@0: public class T6993305 {
aoqi@0:     <T> void test1(T t) { }  // this is the primary case to be tested
aoqi@0:     public <T> void test2(T t) { }
aoqi@0:     @Deprecated <T> void test3(T t) { }
aoqi@0: 
aoqi@0:     public static void main(String... args) throws Exception {
aoqi@0:         new T6993305().run();
aoqi@0:     }
aoqi@0: 
aoqi@0:     void run() throws Exception {
aoqi@0:         File testSrc = new File(System.getProperty("test.src"));
aoqi@0: 
aoqi@0:         JavacTool tool = JavacTool.create();
aoqi@0:         StandardJavaFileManager fm = tool.getStandardFileManager(null, null, null);
aoqi@0: 
aoqi@0:         File f = new File(testSrc, T6993305.class.getSimpleName() + ".java");
aoqi@0:         Iterable<? extends JavaFileObject> fos = fm.getJavaFileObjects(f);
aoqi@0:         JavacTask task = tool.getTask(null, fm, null, null, null, fos);
aoqi@0:         Iterable<? extends CompilationUnitTree> cus = task.parse();
aoqi@0: 
aoqi@0:         TestScanner s = new TestScanner();
aoqi@0:         s.scan(cus, task);
aoqi@0: 
aoqi@0:         if (errors > 0)
aoqi@0:             throw new Exception(errors + " errors occurred");
aoqi@0:     }
aoqi@0: 
aoqi@0:     void error(String msg) {
aoqi@0:         System.err.println("Error: " + msg);
aoqi@0:         errors++;
aoqi@0:     }
aoqi@0: 
aoqi@0:     int errors;
aoqi@0: 
aoqi@0:     class TestScanner extends TreeScanner<Void, JavacTask> {
aoqi@0:         CompilationUnitTree cu;
aoqi@0:         SourcePositions sourcePositions;
aoqi@0:         String source;
aoqi@0: 
aoqi@0:         void show(String label, int pos) {
aoqi@0:             System.err.println(label + ": " +
aoqi@0:                     source.substring(pos, Math.min(source.length(), pos + 10)));
aoqi@0:         }
aoqi@0: 
aoqi@0:         @Override public Void visitCompilationUnit(CompilationUnitTree tree, JavacTask task) {
aoqi@0:             cu = tree;
aoqi@0:             Trees trees = Trees.instance(task);
aoqi@0:             sourcePositions = trees.getSourcePositions();
aoqi@0:             try {
aoqi@0:                 source = String.valueOf(tree.getSourceFile().getCharContent(true));
aoqi@0:             } catch (IOException e) {
aoqi@0:                 throw new Error(e);
aoqi@0:             }
aoqi@0:             return super.visitCompilationUnit(tree, task);
aoqi@0:         }
aoqi@0: 
aoqi@0:         // this is the core of the test
aoqi@0:         @Override public Void visitMethod(MethodTree tree, JavacTask task) {
aoqi@0:             String name = String.valueOf(tree.getName());
aoqi@0:             int pos = source.indexOf(" " + name + "(");
aoqi@0:             while (source.charAt(pos - 1) != '\n') pos--;
aoqi@0:             while (source.charAt(pos) == ' ') pos++;
aoqi@0:             int expectedStart = pos;
aoqi@0:             int reportedStart = (int) sourcePositions.getStartPosition(cu, tree);
aoqi@0:             System.err.println("Method " + name
aoqi@0:                     + " expectedStart:" + expectedStart
aoqi@0:                     + " reportedStart:" + reportedStart);
aoqi@0:             if (expectedStart != reportedStart) {
aoqi@0:                 error("Unexpected value for " + name);
aoqi@0:                 show("expected", expectedStart);
aoqi@0:                 show("reported", reportedStart);
aoqi@0:             }
aoqi@0:             return super.visitMethod(tree, task);
aoqi@0:         }
aoqi@0:     }
aoqi@0: }