| /* |
| * 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 7022337 |
| * @summary repeated warnings about bootclasspath not set |
| * @library /tools/javac/lib |
| * @modules jdk.compiler |
| * @build JavacTestingAbstractProcessor TestWarnErrorCount |
| * @run main TestWarnErrorCount |
| */ |
| |
| import java.io.*; |
| import java.util.*; |
| import javax.annotation.processing.*; |
| import javax.lang.model.element.*; |
| import javax.tools.*; |
| |
| @SupportedOptions({"errKind", "msgrWarnKind", "javaWarnKind"}) |
| public class TestWarnErrorCount extends JavacTestingAbstractProcessor { |
| public static void main(String... args) throws Exception { |
| new TestWarnErrorCount().run(args); |
| } |
| |
| final int MAX_GEN = 10; |
| final int ERROR_ROUND = MAX_GEN / 2; // when to generate error |
| |
| /** |
| * Type of errors to generate in test case. |
| */ |
| enum ErrorKind { |
| /** No errors. */ |
| NONE, |
| /** Source code errors. */ |
| JAVA, |
| /** Errors reported to Messager. */ |
| MESSAGER, |
| /** Error as a result of using -Werror. */ |
| WERROR, |
| } |
| |
| /** |
| * Frequency of warnings in test case. |
| */ |
| enum WarnKind { |
| /** No warnings. */ |
| NONE { |
| boolean warn(int round) { return false; } |
| int count(int start, int end) { return 0; } |
| }, |
| /** Generate a warning if round count is a multiple of 2. */ |
| EVERY_TWO { |
| boolean warn(int round) { return (round % 2) == 0; } |
| int count(int start, int end) { return (end / 2) - ((start - 1)/ 2); } |
| }, |
| /** Generate a warning if round count is a multiple of 3. */ |
| EVERY_THREE { |
| boolean warn(int round) { return (round % 3) == 0; } |
| int count(int start, int end) { return (end / 3) - ((start - 1)/ 3); } |
| }, |
| /** Generate a warning every round. */ |
| ALL { |
| boolean warn(int round) { return true; } |
| int count(int start, int end) { return (end - start + 1); } |
| }; |
| |
| /** whether to generate a warning in round 'round'. */ |
| abstract boolean warn(int round); |
| |
| /** number of warnings generated in a range of rounds, inclusive. */ |
| abstract int count(int start, int end); |
| } |
| |
| |
| /** |
| * Run test. |
| * @param args provide ability to specify particular test cases for debugging. |
| */ |
| void run(String... args) throws Exception { |
| for (String arg: args) { |
| if (arg.matches("[0-9]+")) { |
| if (testCases == null) |
| testCases = new HashSet<Integer>(); |
| testCases.add(Integer.valueOf(arg)); |
| } else if (arg.equals("-stopOnError")) { |
| stopOnError = true; |
| } else |
| throw new IllegalArgumentException(arg); |
| } |
| |
| run (); |
| |
| if (errors > 0) |
| throw new Exception(errors + " errors found"); |
| } |
| |
| /** |
| * Run test. |
| */ |
| void run() throws Exception { |
| for (ErrorKind ek: ErrorKind.values()) { |
| for (WarnKind mwk: WarnKind.values()) { |
| for (WarnKind jwk: WarnKind.values()) { |
| test(ek, mwk, jwk); |
| if (stopOnError && errors > 0) |
| throw new Exception(errors + " errors found"); |
| } |
| } |
| } |
| } |
| |
| boolean stopOnError; |
| Set<Integer> testCases; |
| int testNum = 0; |
| |
| /** |
| * Run a test case. |
| * @param ek The type of errors to generate |
| * @param mwk The frequency of Messager warnings to generate |
| * @param jwk The frequency of Java warnings to generate |
| */ |
| void test(ErrorKind ek, WarnKind mwk, WarnKind jwk) { |
| testNum++; |
| |
| if (testCases != null && !testCases.contains(testNum)) |
| return; |
| |
| System.err.println("Test " + testNum + ": ek:" + ek + " mwk:" + mwk + " jwk:" + jwk); |
| |
| File testDir = new File("test" + testNum); |
| testDir.mkdirs(); |
| |
| String myName = TestWarnErrorCount.class.getSimpleName(); |
| File testSrc = new File(System.getProperty("test.src")); |
| File file = new File(testSrc, myName + ".java"); |
| |
| List<String> args = new ArrayList<String>(); |
| args.addAll(Arrays.asList( |
| "-XDrawDiagnostics", |
| "-d", testDir.getPath(), |
| "-processor", myName, |
| // "-XprintRounds", |
| "-Xlint:all,-path", |
| "-AerrKind=" + ek, |
| "-AmsgrWarnKind=" + mwk, |
| "-AjavaWarnKind=" + jwk)); |
| if (ek == ErrorKind.WERROR) |
| args.add("-Werror"); |
| args.add(file.getPath()); |
| |
| String out = compile(args.toArray(new String[args.size()])); |
| |
| int errsFound = 0; |
| int errsReported = 0; |
| int warnsFound = 0; |
| int warnsReported = 0; |
| |
| // Scan the output looking for messages of interest. |
| |
| for (String line: out.split("[\r\n]+")) { |
| if (line.contains("compiler.err.")) { |
| errsFound++; |
| } else if (line.contains("compiler.warn.")) { |
| warnsFound++; |
| } else if (line.matches("[0-9]+ error(?:s?)")) { |
| errsReported = Integer.valueOf(line.substring(0, line.indexOf("error")).trim()); |
| } else if (line.matches("[0-9]+ warning(?:s?)")) { |
| warnsReported = Integer.valueOf(line.substring(0, line.indexOf("warning")).trim()); |
| } |
| } |
| |
| // Compute the expected number of errors and warnings, based on |
| // the test case parameters. |
| // This is highly specific to the annotation processor below, and to |
| // the files it generates. |
| // Generally, the rules are: |
| // -- errors stop annotation processing, allowing for one extra "last round" |
| // -- messager warnings are immediate |
| // -- javac warnings are not shown before the final compilation |
| // (FIXME? -Werror does not stop processing for java warnings) |
| int errsExpected; |
| int msgrWarnsExpected; |
| int javaWarnsExpected; |
| switch (ek) { |
| case NONE: |
| errsExpected = 0; |
| msgrWarnsExpected = mwk.count(1, 1 + MAX_GEN + 1); |
| javaWarnsExpected = jwk.count(2, 1 + MAX_GEN); |
| break; |
| case MESSAGER: |
| errsExpected = 1; |
| msgrWarnsExpected = mwk.count(1, ERROR_ROUND + 1); |
| javaWarnsExpected = 0; |
| break; |
| case JAVA: |
| errsExpected = 1; |
| msgrWarnsExpected = mwk.count(1, ERROR_ROUND + 1); |
| javaWarnsExpected = 0; |
| break; |
| case WERROR: |
| errsExpected = (mwk != WarnKind.NONE || jwk != WarnKind.NONE) ? 1 : 0; |
| switch (mwk) { |
| case NONE: |
| msgrWarnsExpected = 0; |
| javaWarnsExpected = (jwk == WarnKind.NONE) |
| ? 0 |
| : 1; // this is surprising: javac only reports warning in first file |
| break; |
| case EVERY_TWO: |
| msgrWarnsExpected = mwk.count(1, 2 + 1); |
| javaWarnsExpected = 0; |
| break; |
| case EVERY_THREE: |
| msgrWarnsExpected = mwk.count(1, 3 + 1); |
| javaWarnsExpected = 0; |
| break; |
| case ALL: |
| msgrWarnsExpected = mwk.count(1, 1 + 1); |
| javaWarnsExpected = 0; |
| break; |
| default: |
| throw new IllegalStateException(); |
| } |
| break; |
| default: |
| throw new IllegalStateException(); |
| } |
| |
| int warnsExpected = msgrWarnsExpected + javaWarnsExpected; |
| System.err.println("mwk: " + msgrWarnsExpected |
| + ", jwk: " + javaWarnsExpected |
| + ", total: " + warnsExpected); |
| |
| boolean ok; |
| ok = checkEqual("errors", "reported", errsFound, errsReported); |
| ok &= checkEqual("errors", "expected", errsFound, errsExpected); |
| ok &= checkEqual("warnings", "reported", warnsFound, warnsReported); |
| ok &= checkEqual("warnings", "expected", warnsFound, warnsExpected); |
| if (ok) |
| System.err.println("OK"); |
| |
| System.err.println(); |
| } |
| |
| String compile(String... args) { |
| StringWriter sw = new StringWriter(); |
| PrintWriter pw = new PrintWriter(sw); |
| int rc = com.sun.tools.javac.Main.compile(args, pw); |
| pw.close(); |
| String out = sw.toString(); |
| if (!out.isEmpty()) |
| System.err.println(out); |
| if (rc != 0) |
| System.err.println("compilation failed: rc=" + rc); |
| return out; |
| } |
| |
| boolean checkEqual(String l1, String l2, int i1, int i2) { |
| if (i1 != i2) |
| error("number of " + l1 + " found, " + i1 + ", does not match number " + l2 + ", " + i2); |
| return (i1 == i2); |
| } |
| |
| void error(String msg) { |
| System.err.println("Error: " + msg); |
| errors++; |
| } |
| |
| int errors = 0; |
| |
| // ----- Annotation processor ----- |
| |
| int round = 0; |
| |
| @Override |
| public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) { |
| round++; |
| |
| ErrorKind ek = ErrorKind.valueOf(options.get("errKind")); |
| WarnKind mwk = WarnKind.valueOf(options.get("msgrWarnKind")); |
| WarnKind jwk = WarnKind.valueOf(options.get("javaWarnKind")); |
| messager.printMessage(Diagnostic.Kind.NOTE, |
| "Round " + round |
| + " " + roundEnv.getRootElements() |
| + ", last round: " + roundEnv.processingOver()); |
| messager.printMessage(Diagnostic.Kind.NOTE, |
| "ek: " + ek + ", mwk: " + mwk + ", jwk: " + jwk); |
| |
| if (round <= MAX_GEN && !roundEnv.processingOver()) |
| generate("Gen" + round, |
| (ek == ErrorKind.JAVA) && (round == ERROR_ROUND), |
| jwk.warn(round)); |
| |
| if (mwk.warn(round)) |
| messager.printMessage(Diagnostic.Kind.WARNING, "round " + round); |
| |
| if ((ek == ErrorKind.MESSAGER) && (round == ERROR_ROUND)) |
| messager.printMessage(Diagnostic.Kind.ERROR, "round " + round); |
| |
| return true; |
| } |
| |
| void generate(String name, boolean error, boolean warn) { |
| try { |
| JavaFileObject fo = filer.createSourceFile(name); |
| Writer out = fo.openWriter(); |
| try { |
| out.write("class " + name + " {\n" |
| + (warn ? " void m() throws Exception { try (AutoCloseable ac = null) { } }" : "") |
| + (error ? " ERROR\n" : "") |
| + "}\n"); |
| } finally { |
| out.close(); |
| } |
| } catch (IOException e) { |
| throw new Error(e); |
| } |
| } |
| } |