jdk8-mips64-public/langtools: src/share/classes/com/sun/tools/javac/parser/ParserFactory.java@af8417e590f4

     1 /*

     2  * Copyright (c) 1999, 2012, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.  Oracle designates this

     8  * particular file as subject to the "Classpath" exception as provided

     9  * by Oracle in the LICENSE file that accompanied this code.

    10  *

    11  * This code is distributed in the hope that it will be useful, but WITHOUT

    12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    14  * version 2 for more details (a copy is included in the LICENSE file that

    15  * accompanied this code).

    16  *

    17  * You should have received a copy of the GNU General Public License version

    18  * 2 along with this work; if not, write to the Free Software Foundation,

    19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    20  *

    21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    22  * or visit www.oracle.com if you need additional information or have any

    23  * questions.

    24  */

    26 package com.sun.tools.javac.parser;

    28 import java.util.Locale;

    30 import com.sun.tools.javac.code.Source;

    31 import com.sun.tools.javac.tree.DocTreeMaker;

    32 import com.sun.tools.javac.tree.TreeMaker;

    33 import com.sun.tools.javac.util.Context;

    34 import com.sun.tools.javac.util.Log;

    35 import com.sun.tools.javac.util.Names;

    36 import com.sun.tools.javac.util.Options;

    38 /**

    39  * A factory for creating parsers.

    40  *

    41  * <p><b>This is NOT part of any supported API.

    42  * If you write code that depends on this, you do so at your own risk.

    43  * This code and its internal interfaces are subject to change or

    44  * deletion without notice.</b>

    45  */

    46 public class ParserFactory {

    48     /** The context key for the parser factory. */

    49     protected static final Context.Key<ParserFactory> parserFactoryKey = new Context.Key<ParserFactory>();

    51     public static ParserFactory instance(Context context) {

    52         ParserFactory instance = context.get(parserFactoryKey);

    53         if (instance == null) {

    54             instance = new ParserFactory(context);

    55         }

    56         return instance;

    57     }

    59     final TreeMaker F;

    60     final DocTreeMaker docTreeMaker;

    61     final Log log;

    62     final Tokens tokens;

    63     final Source source;

    64     final Names names;

    65     final Options options;

    66     final ScannerFactory scannerFactory;

    67     final Locale locale;

    69     protected ParserFactory(Context context) {

    70         super();

    71         context.put(parserFactoryKey, this);

    72         this.F = TreeMaker.instance(context);

    73         this.docTreeMaker = DocTreeMaker.instance(context);

    74         this.log = Log.instance(context);

    75         this.names = Names.instance(context);

    76         this.tokens = Tokens.instance(context);

    77         this.source = Source.instance(context);

    78         this.options = Options.instance(context);

    79         this.scannerFactory = ScannerFactory.instance(context);

    80         this.locale = context.get(Locale.class);

    81     }

    83     public JavacParser newParser(CharSequence input, boolean keepDocComments, boolean keepEndPos, boolean keepLineMap) {

    84         Lexer lexer = scannerFactory.newScanner(input, keepDocComments);

    85         return new JavacParser(this, lexer, keepDocComments, keepLineMap, keepEndPos);

    86     }

    87 }

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