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/*
* Copyright (c) 2011, 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.
*/
/*
* @test
* @bug 6993305
* @summary starting position of a method without modifiers and with type parameters is incorrect
* @modules jdk.compiler/com.sun.tools.javac.api
* jdk.compiler/com.sun.tools.javac.file
*/
import java.io.File;
import javax.tools.JavaFileObject;
import javax.tools.StandardJavaFileManager;
import com.sun.source.tree.CompilationUnitTree;
import com.sun.source.tree.MethodTree;
import com.sun.source.util.JavacTask;
import com.sun.source.util.SourcePositions;
import com.sun.source.util.TreeScanner;
import com.sun.source.util.Trees;
import com.sun.tools.javac.api.JavacTool;
import java.io.IOException;
/*
* Test verifies the starting position of all methods by computing the start position
* of each method as the first non-white character on the first line containing
* (" " + methodName + "("), and then comparing this value against the reported
* value in the SourcePositions table.
*/
public class T6993305 {
<T> void test1(T t) { } // this is the primary case to be tested
public <T> void test2(T t) { }
@Deprecated <T> void test3(T t) { }
public static void main(String... args) throws Exception {
new T6993305().run();
}
void run() throws Exception {
File testSrc = new File(System.getProperty("test.src"));
JavacTool tool = JavacTool.create();
try (StandardJavaFileManager fm = tool.getStandardFileManager(null, null, null)) {
File f = new File(testSrc, T6993305.class.getSimpleName() + ".java");
Iterable<? extends JavaFileObject> fos = fm.getJavaFileObjects(f);
JavacTask task = tool.getTask(null, fm, null, null, null, fos);
Iterable<? extends CompilationUnitTree> cus = task.parse();
TestScanner s = new TestScanner();
s.scan(cus, task);
if (errors > 0)
throw new Exception(errors + " errors occurred");
}
}
void error(String msg) {
System.err.println("Error: " + msg);
errors++;
}
int errors;
class TestScanner extends TreeScanner<Void, JavacTask> {
CompilationUnitTree cu;
SourcePositions sourcePositions;
String source;
void show(String label, int pos) {
System.err.println(label + ": " +
source.substring(pos, Math.min(source.length(), pos + 10)));
}
@Override public Void visitCompilationUnit(CompilationUnitTree tree, JavacTask task) {
cu = tree;
Trees trees = Trees.instance(task);
sourcePositions = trees.getSourcePositions();
try {
source = String.valueOf(tree.getSourceFile().getCharContent(true));
} catch (IOException e) {
throw new Error(e);
}
return super.visitCompilationUnit(tree, task);
}
// this is the core of the test
@Override public Void visitMethod(MethodTree tree, JavacTask task) {
String name = String.valueOf(tree.getName());
int pos = source.indexOf(" " + name + "(");
while (source.charAt(pos - 1) != '\n') pos--;
while (source.charAt(pos) == ' ') pos++;
int expectedStart = pos;
int reportedStart = (int) sourcePositions.getStartPosition(cu, tree);
System.err.println("Method " + name
+ " expectedStart:" + expectedStart
+ " reportedStart:" + reportedStart);
if (expectedStart != reportedStart) {
error("Unexpected value for " + name);
show("expected", expectedStart);
show("reported", reportedStart);
}
return super.visitMethod(tree, task);
}
}
}
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