336 lines
12 KiB
Java
336 lines
12 KiB
Java
/*
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* Copyright (c) 2011, 2021, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* @test
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* @bug 7022337
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* @summary repeated warnings about bootclasspath not set
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* @library /tools/javac/lib
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* @modules jdk.compiler
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* @build JavacTestingAbstractProcessor TestWarnErrorCount
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* @run main TestWarnErrorCount
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*/
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import java.io.*;
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import java.util.*;
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import javax.annotation.processing.*;
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import javax.lang.model.element.*;
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import javax.tools.*;
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@SupportedOptions({"errKind", "msgrWarnKind", "javaWarnKind"})
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public class TestWarnErrorCount extends JavacTestingAbstractProcessor {
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public static void main(String... args) throws Exception {
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new TestWarnErrorCount().run(args);
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}
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final int MAX_GEN = 10;
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final int ERROR_ROUND = MAX_GEN / 2; // when to generate error
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/**
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* Type of errors to generate in test case.
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*/
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enum ErrorKind {
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/** No errors. */
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NONE,
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/** Source code errors. */
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JAVA,
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/** Errors reported to Messager. */
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MESSAGER,
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/** Error as a result of using -Werror. */
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WERROR,
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}
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/**
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* Frequency of warnings in test case.
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*/
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enum WarnKind {
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/** No warnings. */
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NONE {
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boolean warn(int round) { return false; }
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int count(int start, int end) { return 0; }
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},
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/** Generate a warning if round count is a multiple of 2. */
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EVERY_TWO {
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boolean warn(int round) { return (round % 2) == 0; }
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int count(int start, int end) { return (end / 2) - ((start - 1)/ 2); }
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},
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/** Generate a warning if round count is a multiple of 3. */
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EVERY_THREE {
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boolean warn(int round) { return (round % 3) == 0; }
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int count(int start, int end) { return (end / 3) - ((start - 1)/ 3); }
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},
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/** Generate a warning every round. */
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ALL {
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boolean warn(int round) { return true; }
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int count(int start, int end) { return (end - start + 1); }
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};
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/** whether to generate a warning in round 'round'. */
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abstract boolean warn(int round);
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/** number of warnings generated in a range of rounds, inclusive. */
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abstract int count(int start, int end);
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}
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/**
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* Run test.
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* @param args provide ability to specify particular test cases for debugging.
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*/
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void run(String... args) throws Exception {
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for (String arg: args) {
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if (arg.matches("[0-9]+")) {
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if (testCases == null)
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testCases = new HashSet<Integer>();
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testCases.add(Integer.valueOf(arg));
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} else if (arg.equals("-stopOnError")) {
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stopOnError = true;
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} else
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throw new IllegalArgumentException(arg);
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}
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run ();
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if (errors > 0)
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throw new Exception(errors + " errors found");
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}
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/**
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* Run test.
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*/
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void run() throws Exception {
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for (ErrorKind ek: ErrorKind.values()) {
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for (WarnKind mwk: WarnKind.values()) {
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for (WarnKind jwk: WarnKind.values()) {
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test(ek, mwk, jwk);
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if (stopOnError && errors > 0)
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throw new Exception(errors + " errors found");
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}
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}
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}
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}
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boolean stopOnError;
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Set<Integer> testCases;
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int testNum = 0;
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/**
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* Run a test case.
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* @param ek The type of errors to generate
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* @param mwk The frequency of Messager warnings to generate
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* @param jwk The frequency of Java warnings to generate
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*/
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void test(ErrorKind ek, WarnKind mwk, WarnKind jwk) {
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testNum++;
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if (testCases != null && !testCases.contains(testNum))
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return;
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System.err.println("Test " + testNum + ": ek:" + ek + " mwk:" + mwk + " jwk:" + jwk);
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File testDir = new File("test" + testNum);
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testDir.mkdirs();
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String myName = TestWarnErrorCount.class.getSimpleName();
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File testSrc = new File(System.getProperty("test.src"));
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File file = new File(testSrc, myName + ".java");
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List<String> args = new ArrayList<String>();
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args.addAll(Arrays.asList(
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"-XDrawDiagnostics",
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"-d", testDir.getPath(),
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"-processor", myName,
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// "-XprintRounds",
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"-Xlint:all,-path",
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"-AerrKind=" + ek,
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"-AmsgrWarnKind=" + mwk,
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"-AjavaWarnKind=" + jwk));
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if (ek == ErrorKind.WERROR)
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args.add("-Werror");
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args.add(file.getPath());
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String out = compile(args.toArray(new String[args.size()]));
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int errsFound = 0;
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int errsReported = 0;
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int warnsFound = 0;
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int warnsReported = 0;
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// Scan the output looking for messages of interest.
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for (String line: out.split("[\r\n]+")) {
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if (line.contains("compiler.err.")) {
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errsFound++;
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} else if (line.contains("compiler.warn.")) {
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warnsFound++;
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} else if (line.matches("[0-9]+ error(?:s?)")) {
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errsReported = Integer.valueOf(line.substring(0, line.indexOf("error")).trim());
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} else if (line.matches("[0-9]+ warning(?:s?)")) {
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warnsReported = Integer.valueOf(line.substring(0, line.indexOf("warning")).trim());
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}
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}
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// Compute the expected number of errors and warnings, based on
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// the test case parameters.
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// This is highly specific to the annotation processor below, and to
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// the files it generates.
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// Generally, the rules are:
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// -- errors stop annotation processing, allowing for one extra "last round"
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// -- messager warnings are immediate
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// -- javac warnings are not shown before the final compilation
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// (FIXME? -Werror does not stop processing for java warnings)
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int errsExpected;
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int msgrWarnsExpected;
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int javaWarnsExpected;
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switch (ek) {
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case NONE:
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errsExpected = 0;
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msgrWarnsExpected = mwk.count(1, 1 + MAX_GEN + 1);
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javaWarnsExpected = jwk.count(2, 1 + MAX_GEN);
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break;
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case MESSAGER:
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errsExpected = 1;
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msgrWarnsExpected = mwk.count(1, ERROR_ROUND + 1);
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javaWarnsExpected = 0;
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break;
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case JAVA:
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errsExpected = 1;
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msgrWarnsExpected = mwk.count(1, ERROR_ROUND + 1);
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javaWarnsExpected = 0;
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break;
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case WERROR:
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errsExpected = (mwk != WarnKind.NONE || jwk != WarnKind.NONE) ? 1 : 0;
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switch (mwk) {
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case NONE:
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msgrWarnsExpected = 0;
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javaWarnsExpected = (jwk == WarnKind.NONE)
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? 0
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: 1; // this is surprising: javac only reports warning in first file
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break;
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case EVERY_TWO:
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msgrWarnsExpected = mwk.count(1, 2 + 1);
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javaWarnsExpected = 0;
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break;
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case EVERY_THREE:
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msgrWarnsExpected = mwk.count(1, 3 + 1);
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javaWarnsExpected = 0;
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break;
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case ALL:
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msgrWarnsExpected = mwk.count(1, 1 + 1);
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javaWarnsExpected = 0;
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break;
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default:
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throw new IllegalStateException();
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}
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break;
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default:
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throw new IllegalStateException();
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}
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int warnsExpected = msgrWarnsExpected + javaWarnsExpected;
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System.err.println("mwk: " + msgrWarnsExpected
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+ ", jwk: " + javaWarnsExpected
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+ ", total: " + warnsExpected);
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boolean ok;
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ok = checkEqual("errors", "reported", errsFound, errsReported);
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ok &= checkEqual("errors", "expected", errsFound, errsExpected);
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ok &= checkEqual("warnings", "reported", warnsFound, warnsReported);
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ok &= checkEqual("warnings", "expected", warnsFound, warnsExpected);
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if (ok)
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System.err.println("OK");
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System.err.println();
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}
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String compile(String... args) {
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StringWriter sw = new StringWriter();
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PrintWriter pw = new PrintWriter(sw);
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int rc = com.sun.tools.javac.Main.compile(args, pw);
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pw.close();
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String out = sw.toString();
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if (!out.isEmpty())
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System.err.println(out);
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if (rc != 0)
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System.err.println("compilation failed: rc=" + rc);
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return out;
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}
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boolean checkEqual(String l1, String l2, int i1, int i2) {
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if (i1 != i2)
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error("number of " + l1 + " found, " + i1 + ", does not match number " + l2 + ", " + i2);
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return (i1 == i2);
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}
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void error(String msg) {
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System.err.println("Error: " + msg);
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errors++;
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}
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int errors = 0;
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// ----- Annotation processor -----
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int round = 0;
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@Override
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public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) {
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round++;
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ErrorKind ek = ErrorKind.valueOf(options.get("errKind"));
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WarnKind mwk = WarnKind.valueOf(options.get("msgrWarnKind"));
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WarnKind jwk = WarnKind.valueOf(options.get("javaWarnKind"));
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messager.printNote("Round " + round
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+ " " + roundEnv.getRootElements()
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+ ", last round: " + roundEnv.processingOver());
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messager.printNote("ek: " + ek + ", mwk: " + mwk + ", jwk: " + jwk);
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if (round <= MAX_GEN && !roundEnv.processingOver())
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generate("Gen" + round,
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(ek == ErrorKind.JAVA) && (round == ERROR_ROUND),
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jwk.warn(round));
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if (mwk.warn(round))
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messager.printWarning("round " + round);
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if ((ek == ErrorKind.MESSAGER) && (round == ERROR_ROUND))
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messager.printError("round " + round);
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return true;
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}
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void generate(String name, boolean error, boolean warn) {
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try {
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JavaFileObject fo = filer.createSourceFile(name);
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try (Writer out = fo.openWriter()) {
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out.write("class " + name + " {\n"
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+ (warn ? " void m() throws Exception { try (AutoCloseable ac = null) { } }" : "")
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+ (error ? " ERROR\n" : "")
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+ "}\n");
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}
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} catch (IOException e) {
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throw new Error(e);
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}
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}
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}
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