1 /*

     2  * Copyright (c) 2014, 2017, 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  */

    25 

    26 package jdk.jshell;

    27 

    28 import com.sun.tools.javac.parser.JavacParser;

    29 import com.sun.tools.javac.parser.ParserFactory;

    30 import com.sun.tools.javac.parser.ScannerFactory;

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

    32 

    33 /**

    34  *

    35  * @author Robert Field

    36  */

    37 class ReplParserFactory extends ParserFactory {

    38 

    39     // force starting in expression mode

    40     private final boolean forceExpression;

    41 

    42     public static void preRegister(Context context, boolean forceExpression) {

    43         context.put(parserFactoryKey, (Context.Factory<ParserFactory>)

    44                 (c -> new ReplParserFactory(c, forceExpression)));

    45     }

    46 

    47     private final ScannerFactory scannerFactory;

    48 

    49     protected ReplParserFactory(Context context, boolean forceExpression) {

    50         super(context);

    51         this.forceExpression = forceExpression;

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

    53     }

    54 

    55     @Override

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

    57         com.sun.tools.javac.parser.Lexer lexer = scannerFactory.newScanner(input, keepDocComments);

    58         return new ReplParser(this, lexer, keepDocComments, keepLineMap, keepEndPos, forceExpression);

    59     }

    60 

    61     @Override

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

    63         return newParser(input, keepDocComments, keepEndPos, keepLineMap);

    64     }

    65 }