Java example source code file (TestFatalityOfParseErrors.java)

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Java - Java tags/keywords

ioexception, javactestingabstractprocessor, printwriter, root, roundenvironment, runtimeexception, second, simpleclass, syntaxerror, testfatalityofparseerrors, typeelement, unexpected, util

The TestFatalityOfParseErrors.java Java example source code

/*
 * Copyright (c) 2006, 2010, 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 6403459
 * @summary Test that generating programs with syntax errors is a fatal condition
 * @author  Joseph D. Darcy
 * @library /tools/javac/lib
 * @build JavacTestingAbstractProcessor
 * @compile TestReturnCode.java
 * @compile TestFatalityOfParseErrors.java
 * @compile/fail -XprintRounds -processor TestFatalityOfParseErrors -proc:only TestFatalityOfParseErrors.java
 */

import java.util.Set;
import javax.annotation.processing.*;
import javax.lang.model.SourceVersion;
import static javax.lang.model.SourceVersion.*;
import javax.lang.model.element.*;
import javax.lang.model.util.*;
import static javax.tools.Diagnostic.Kind.*;

import java.io.PrintWriter;
import java.io.IOException;

/**
 * Write out an incomplete source file and observe that the next round
 * is marked as an error.
 */
public class TestFatalityOfParseErrors extends JavacTestingAbstractProcessor {
    int round = 0;

    public boolean process(Set<? extends TypeElement> annotations,
                           RoundEnvironment roundEnvironment) {
        try {
            PrintWriter pw = null;
            round++;

            switch (round) {
            case 1:
                pw = new PrintWriter(filer.createSourceFile("SyntaxError").openWriter());
                pw.println("class SyntaxError {");
                pw.close();
                break;

            case 2:
                pw = new PrintWriter(filer.createSourceFile("SimpleClass").openWriter());
                pw.println("class SimpleClass {}");
                pw.close();

                if (!roundEnvironment.errorRaised() || !roundEnvironment.processingOver() ) {
                    System.err.println(roundEnvironment);
                    throw new RuntimeException("Second round not erroneous as expected.");
                }
                if (!roundEnvironment.getRootElements().isEmpty()) {
                    System.err.println(roundEnvironment);
                    throw new RuntimeException("Root elements not empty as expected.");
                }
                break;

            default:
                throw new RuntimeException("Unexpected round number " + round);
            }
        } catch (IOException ioException) {
            throw new RuntimeException(ioException);
        }
        return true;
    }
}