JDK14/Java14源码在线阅读

/*
 * Copyright (c) 2012, 2014, 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.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * 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
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package com.sun.tools.sjavac;

import java.io.IOException;
import java.io.PrintWriter;
import java.util.Arrays;

import javax.tools.JavaCompiler.CompilationTask;
import javax.tools.JavaFileManager;

import com.sun.tools.javac.api.JavacTool;
import com.sun.tools.javac.code.ClassFinder;
import com.sun.tools.javac.code.Symbol.ClassSymbol;
import com.sun.tools.javac.code.Symtab;
import com.sun.tools.javac.main.JavaCompiler;
import com.sun.tools.javac.util.Context;
import com.sun.tools.javac.util.Convert;
import com.sun.tools.javac.util.Name;
import com.sun.tools.javac.util.Names;
import com.sun.tools.sjavac.comp.PubapiVisitor;
import com.sun.tools.sjavac.comp.SmartFileManager;
import com.sun.tools.sjavac.options.Options;
import com.sun.tools.sjavac.pubapi.PubApi;

public class PubApiExtractor {
    // Setup a compiler context for finding classes in the classpath
    // and to execute annotation processors.
    final Context context;
    final CompilationTask task;

    final SmartFileManager fileManager;

    /**
     * Setup a compilation context, used for reading public apis of classes on the classpath
     * as well as annotation processors.
     */
    public PubApiExtractor(Options options) {
        JavacTool compiler = com.sun.tools.javac.api.JavacTool.create();
        fileManager = new SmartFileManager(compiler.getStandardFileManager(null, null, null));
        context = new com.sun.tools.javac.util.Context();
        String[] args = options.prepJavacArgs();
        task = compiler.getTask(new PrintWriter(System.err),
                                fileManager,
                                null,
                                Arrays.asList(args),
                                null,
                                null,
                                context);
        // Trigger a creation of the JavaCompiler, necessary to get a sourceCompleter for ClassFinder.
        // The sourceCompleter is used for build situations where a classpath class references other classes
        // that happens to be on the sourcepath.
        JavaCompiler.instance(context);

//        context.put(JavaFileManager.class, fileManager);
    }

    public PubApi getPubApi(String fullyQualifiedClassName) {
        Symtab syms = Symtab.instance(context);

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