test/langtools/tools/javac/processing/errors/TestSuppression.java - platform/libcore - Git at Google

 /*
  * Copyright (c) 2010, 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 6403465
  * @summary javac should defer diagnostics until it can be determined they are persistent
  * @modules jdk.compiler/com.sun.tools.javac.api
  *          jdk.compiler/com.sun.tools.javac.file
  *          jdk.compiler/com.sun.tools.javac.util
  */

 import java.io.*;
 import java.util.*;
 import javax.annotation.processing.*;
 import javax.lang.model.*;
 import javax.lang.model.element.TypeElement;
 import javax.tools.*;

 import com.sun.source.util.JavacTask;
 import com.sun.tools.javac.api.ClientCodeWrapper;
 import com.sun.tools.javac.api.JavacTool;
 import com.sun.tools.javac.util.JCDiagnostic;

 import static com.sun.tools.javac.util.JCDiagnostic.DiagnosticFlag.*;


 public class TestSuppression {
     public static void main(String... args) throws Exception {
         new TestSuppression().run(args);
     }

     enum WarningKind { NO, YES };

     String[] cases = {
         // missing class C
         "class X { C c; }",
         "class X { C foo() { return null; } }",
         "class X { void foo(C c) { } }",
         "class X extends C { }",
         "class X<T extends C> { }",
         // missing interface I
         "class X implements I { }",
         "interface X extends I { }",
         // missing exception E
         "class X { void m() throws E { } }",
         // missing method m
         "class X extends C { int i = m(); }",
         // missing field f
         "class X extends C { int i = f; }"
     };

     void run(String... args) throws Exception {
         for (String c: cases) {
             for (WarningKind wk: WarningKind.values()) {
                 for (int g = 1; g <= 3; g++) {
                     try {
                         test(c, wk, g);
                     } catch (Throwable t) {
                         error("caught: " + t);
                     }
                     if (errors > 0) throw new AssertionError();
                 }
             }
         }

         System.err.println(count + " test cases");

         if (errors > 0)
             throw new Exception(errors + " errors occurred");
     }

     void test(String src, WarningKind wk, int gen) throws Exception {
         count++;
         System.err.println("Test " + count + ": wk:" + wk + " gen:" + gen + " src:" +src);

         File testDir = new File("test" + count);
         File srcDir = createDir(testDir, "src");
         File gensrcDir = createDir(testDir, "gensrc");
         File classesDir = createDir(testDir, "classes");

         File x = writeFile(new File(srcDir, "X.java"), src);

         DiagListener dl = new DiagListener();
         JavacTool tool = JavacTool.create();
         try (StandardJavaFileManager fm = tool.getStandardFileManager(dl, null, null)) {
             fm.setLocation(StandardLocation.CLASS_PATH,
                     Arrays.asList(classesDir, new File(System.getProperty("test.classes"))));
             fm.setLocation(StandardLocation.CLASS_OUTPUT, Collections.singleton(classesDir));
             fm.setLocation(StandardLocation.SOURCE_OUTPUT, Collections.singleton(gensrcDir));
             List<String> args = new ArrayList<String>();
     //        args.add("-XprintProcessorInfo");
             args.add("-XprintRounds");
             args.add("-Agen=" + gen);
             if (wk == WarningKind.YES)
                 args.add("-Xlint:serial");
             Iterable<? extends JavaFileObject> files = fm.getJavaFileObjects(x);

             StringWriter sw = new StringWriter();
             PrintWriter pw = new PrintWriter(sw);
             JavacTask task = tool.getTask(pw, fm, dl, args, null, files);
             task.setProcessors(Arrays.asList(new AnnoProc()));
             boolean ok = task.call();
             pw.close();

             System.err.println("ok:" + ok + " diags:" + dl.counts);
             if (sw.toString().length() > 0) {
                 System.err.println("output:\n" + sw.toString());
             }

             for (Diagnostic.Kind dk: Diagnostic.Kind.values()) {
                 Integer v = dl.counts.get(dk);
                 int found = (v == null) ? 0 : v;
                 int expect = (dk == Diagnostic.Kind.WARNING && wk == WarningKind.YES) ? gen : 0;
                 if (found != expect) {
                     error("Unexpected value for " + dk + ": expected: " + expect + " found: " + found);
                 }
             }

             System.err.println();
         }
     }

     File createDir(File parent, String name) {
         File dir = new File(parent, name);
         dir.mkdirs();
         return dir;
     }

     File writeFile(File f, String content) throws IOException {
         FileWriter out = new FileWriter(f);
         try {
             out.write(content);
         } finally {
             out.close();
         }
         return f;
     }

     <T> void add(List<T> list, T... values) {
         for (T v: values)
             list.add(v);
     }

     void error(String msg) {
         System.err.println("Error: " + msg);
         errors++;
     }

     int count;
     int errors;

     static class DiagListener implements DiagnosticListener<JavaFileObject> {
         int total;
         Map<Diagnostic.Kind,Integer> counts = new TreeMap<Diagnostic.Kind,Integer>();

         public void report(Diagnostic<? extends JavaFileObject> diagnostic) {
             System.err.println((++total) + ": "
                     + "resolveError:" + isResolveError(unwrap(diagnostic)) + "\n"
                     + diagnostic);
             Diagnostic.Kind dk = diagnostic.getKind();
             Integer c = counts.get(dk);
             counts.put(dk, (c == null ? 1 : c + 1));
         }

         private static boolean isResolveError(JCDiagnostic d) {
             return d.isFlagSet(RESOLVE_ERROR);
         }

         private JCDiagnostic unwrap(Diagnostic<? extends JavaFileObject> diagnostic) {
             if (diagnostic instanceof JCDiagnostic)
                 return (JCDiagnostic) diagnostic;
             if (diagnostic instanceof ClientCodeWrapper.DiagnosticSourceUnwrapper)
                 return ((ClientCodeWrapper.DiagnosticSourceUnwrapper)diagnostic).d;
             throw new IllegalArgumentException();
         }
     }

     @SupportedAnnotationTypes("*")
     @SupportedOptions("gen")
     public static class AnnoProc extends AbstractProcessor {
         Filer f;
         Messager m;
         int gen;

         @Override
         public void init(ProcessingEnvironment processingEnv) {
             f = processingEnv.getFiler();
             m = processingEnv.getMessager();
             Map<String,String> options = processingEnv.getOptions();
             gen = Integer.parseInt(options.get("gen"));
         }

         @Override
         public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) {
             round++;
             if (round < gen)
                 writeSource("Dummy" + round, "class Dummy" + round + " extends java.util.ArrayList{ }");
             else if (round == gen) {
                 writeSource("C", "class C { int f; int m() { return 0; } }");
                 writeSource("I", "interface I { }");
                 writeSource("E", "class E extends Exception { }");
             }
             return true;
         }

         @Override
         public SourceVersion getSupportedSourceVersion() {
             return SourceVersion.latest();
         }

         private void writeSource(String name, String text) {
             try {
                 JavaFileObject fo = f.createSourceFile(name);
                 Writer out = fo.openWriter();
                 out.write(text);
                 out.close();
             } catch (IOException e) {
                 m.printMessage(Diagnostic.Kind.ERROR, e.toString());
             }
         }

         int round = 0;
     }
 }
	/*
	* Copyright (c) 2010, 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 6403465
	* @summary javac should defer diagnostics until it can be determined they are persistent
	* @modules jdk.compiler/com.sun.tools.javac.api
	* jdk.compiler/com.sun.tools.javac.file
	* jdk.compiler/com.sun.tools.javac.util
	*/

	import java.io.*;
	import java.util.*;
	import javax.annotation.processing.*;
	import javax.lang.model.*;
	import javax.lang.model.element.TypeElement;
	import javax.tools.*;

	import com.sun.source.util.JavacTask;
	import com.sun.tools.javac.api.ClientCodeWrapper;
	import com.sun.tools.javac.api.JavacTool;
	import com.sun.tools.javac.util.JCDiagnostic;

	import static com.sun.tools.javac.util.JCDiagnostic.DiagnosticFlag.*;


	public class TestSuppression {
	public static void main(String... args) throws Exception {
	new TestSuppression().run(args);
	}

	enum WarningKind { NO, YES };

	String[] cases = {
	// missing class C
	"class X { C c; }",
	"class X { C foo() { return null; } }",
	"class X { void foo(C c) { } }",
	"class X extends C { }",
	"class X<T extends C> { }",
	// missing interface I
	"class X implements I { }",
	"interface X extends I { }",
	// missing exception E
	"class X { void m() throws E { } }",
	// missing method m
	"class X extends C { int i = m(); }",
	// missing field f
	"class X extends C { int i = f; }"
	};

	void run(String... args) throws Exception {
	for (String c: cases) {
	for (WarningKind wk: WarningKind.values()) {
	for (int g = 1; g <= 3; g++) {
	try {
	test(c, wk, g);
	} catch (Throwable t) {
	error("caught: " + t);
	}
	if (errors > 0) throw new AssertionError();
	}
	}
	}

	System.err.println(count + " test cases");

	if (errors > 0)
	throw new Exception(errors + " errors occurred");
	}

	void test(String src, WarningKind wk, int gen) throws Exception {
	count++;
	System.err.println("Test " + count + ": wk:" + wk + " gen:" + gen + " src:" +src);

	File testDir = new File("test" + count);
	File srcDir = createDir(testDir, "src");
	File gensrcDir = createDir(testDir, "gensrc");
	File classesDir = createDir(testDir, "classes");

	File x = writeFile(new File(srcDir, "X.java"), src);

	DiagListener dl = new DiagListener();
	JavacTool tool = JavacTool.create();
	try (StandardJavaFileManager fm = tool.getStandardFileManager(dl, null, null)) {
	fm.setLocation(StandardLocation.CLASS_PATH,
	Arrays.asList(classesDir, new File(System.getProperty("test.classes"))));
	fm.setLocation(StandardLocation.CLASS_OUTPUT, Collections.singleton(classesDir));
	fm.setLocation(StandardLocation.SOURCE_OUTPUT, Collections.singleton(gensrcDir));
	List<String> args = new ArrayList<String>();
	// args.add("-XprintProcessorInfo");
	args.add("-XprintRounds");
	args.add("-Agen=" + gen);
	if (wk == WarningKind.YES)
	args.add("-Xlint:serial");
	Iterable<? extends JavaFileObject> files = fm.getJavaFileObjects(x);

	StringWriter sw = new StringWriter();
	PrintWriter pw = new PrintWriter(sw);
	JavacTask task = tool.getTask(pw, fm, dl, args, null, files);
	task.setProcessors(Arrays.asList(new AnnoProc()));
	boolean ok = task.call();
	pw.close();

	System.err.println("ok:" + ok + " diags:" + dl.counts);
	if (sw.toString().length() > 0) {
	System.err.println("output:\n" + sw.toString());
	}

	for (Diagnostic.Kind dk: Diagnostic.Kind.values()) {
	Integer v = dl.counts.get(dk);
	int found = (v == null) ? 0 : v;
	int expect = (dk == Diagnostic.Kind.WARNING && wk == WarningKind.YES) ? gen : 0;
	if (found != expect) {
	error("Unexpected value for " + dk + ": expected: " + expect + " found: " + found);
	}
	}

	System.err.println();
	}
	}

	File createDir(File parent, String name) {
	File dir = new File(parent, name);
	dir.mkdirs();
	return dir;
	}

	File writeFile(File f, String content) throws IOException {
	FileWriter out = new FileWriter(f);
	try {
	out.write(content);
	} finally {
	out.close();
	}
	return f;
	}

	<T> void add(List<T> list, T... values) {
	for (T v: values)
	list.add(v);
	}

	void error(String msg) {
	System.err.println("Error: " + msg);
	errors++;
	}

	int count;
	int errors;

	static class DiagListener implements DiagnosticListener<JavaFileObject> {
	int total;
	Map<Diagnostic.Kind,Integer> counts = new TreeMap<Diagnostic.Kind,Integer>();

	public void report(Diagnostic<? extends JavaFileObject> diagnostic) {
	System.err.println((++total) + ": "
	+ "resolveError:" + isResolveError(unwrap(diagnostic)) + "\n"
	+ diagnostic);
	Diagnostic.Kind dk = diagnostic.getKind();
	Integer c = counts.get(dk);
	counts.put(dk, (c == null ? 1 : c + 1));
	}

	private static boolean isResolveError(JCDiagnostic d) {
	return d.isFlagSet(RESOLVE_ERROR);
	}

	private JCDiagnostic unwrap(Diagnostic<? extends JavaFileObject> diagnostic) {
	if (diagnostic instanceof JCDiagnostic)
	return (JCDiagnostic) diagnostic;
	if (diagnostic instanceof ClientCodeWrapper.DiagnosticSourceUnwrapper)
	return ((ClientCodeWrapper.DiagnosticSourceUnwrapper)diagnostic).d;
	throw new IllegalArgumentException();
	}
	}

	@SupportedAnnotationTypes("*")
	@SupportedOptions("gen")
	public static class AnnoProc extends AbstractProcessor {
	Filer f;
	Messager m;
	int gen;

	@Override
	public void init(ProcessingEnvironment processingEnv) {
	f = processingEnv.getFiler();
	m = processingEnv.getMessager();
	Map<String,String> options = processingEnv.getOptions();
	gen = Integer.parseInt(options.get("gen"));
	}

	@Override
	public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) {
	round++;
	if (round < gen)
	writeSource("Dummy" + round, "class Dummy" + round + " extends java.util.ArrayList{ }");
	else if (round == gen) {
	writeSource("C", "class C { int f; int m() { return 0; } }");
	writeSource("I", "interface I { }");
	writeSource("E", "class E extends Exception { }");
	}
	return true;
	}

	@Override
	public SourceVersion getSupportedSourceVersion() {
	return SourceVersion.latest();
	}

	private void writeSource(String name, String text) {
	try {
	JavaFileObject fo = f.createSourceFile(name);
	Writer out = fo.openWriter();
	out.write(text);
	out.close();
	} catch (IOException e) {
	m.printMessage(Diagnostic.Kind.ERROR, e.toString());
	}
	}

	int round = 0;
	}
	}