t6358168.java

是一款用JAVA 编写的编译器 具有很强的编译功能

/*
 * Copyright 2006 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
 * CA 95054 USA or visit www.sun.com if you need additional information or
 * have any questions.
 */

/*
 * @test
 * @bug 6358168
 * @summary JavaCompiler.hasBeenUsed is not set in delegateCompiler
 */

import java.io.*;
import java.net.*;
import java.util.*;
import javax.annotation.processing.*;
import javax.lang.model.element.*;
import javax.tools.*;
import com.sun.tools.javac.main.JavaCompiler;
import com.sun.tools.javac.main.*;
import com.sun.tools.javac.util.*;
import com.sun.tools.javac.util.List; // disambiguate


@SupportedAnnotationTypes("*")
public class T6358168 extends AbstractProcessor {
    private static String testClasses = System.getProperty("test.classes");
    private static String testSrc = System.getProperty("test.src");
    private static String self = T6358168.class.getName();

    public static void main(String... args) throws Throwable {
	
	JavacFileManager fm = new JavacFileManager(new Context(), false, null);
	JavaFileObject f = fm.getFileForInput(testSrc + File.separatorChar + T6358168.class.getName() + ".java");

	try {
	    // first, test case with no annotation processing
	    testNoAnnotationProcessing(fm, f);

	    // now, test case with annotation processing
	    testAnnotationProcessing(fm, f);
	}
	catch (Throwable t) {
	    AssertionError e = new AssertionError();
	    e.initCause(t);
	    throw e;
	}
    }
    
    static void testNoAnnotationProcessing(JavacFileManager fm, JavaFileObject f) throws Throwable {
	Context context = new Context();
	fm.setContext(context);
	
	Main compilerMain = new Main("javac", new PrintWriter(System.err, true)); 
	compilerMain.setOptions(Options.instance(context));
	compilerMain.filenames = new ListBuffer<File>();
	compilerMain.processArgs(new String[] { "-d", "." });

	JavaCompiler compiler = JavaCompiler.instance(context);
	compiler.compile(List.of(f));
	try {
	    compiler.compile(List.of(f));
	    throw new Error("Error: AssertionError not thrown after second call of compile");
	} catch (AssertionError e) {
	    System.err.println("Exception from compiler (expected): " + e);
	}
    }
    
    static void testAnnotationProcessing(JavacFileManager fm, JavaFileObject f) throws Throwable {
	Context context = new Context();
	fm.setContext(context);
	
	Main compilerMain = new Main("javac", new PrintWriter(System.err, true)); 
	compilerMain.setOptions(Options.instance(context));
	compilerMain.filenames = new ListBuffer<File>();
	compilerMain.processArgs(new String[] { 
				     "-XprintRounds", 
				     "-processorpath", testClasses,
				     "-processor", self,
				     "-d", "."});
	
	JavaCompiler compiler = JavaCompiler.instance(context);
	compiler.initProcessAnnotations(null);
	JavaCompiler compiler2 = compiler.processAnnotations(compiler.enterTrees(compiler.parseFiles(List.of(f))));
	try {
	    compiler2.compile(List.of(f));
	    throw new Error("Error: AssertionError not thrown after second call of compile");
	} catch (AssertionError e) {
	    System.err.println("Exception from compiler (expected): " + e);
	}
    }

    public boolean process(Set<? extends TypeElement> tes, RoundEnvironment renv) {
	return true;
    }
}