| /* |
| * Copyright (c) 2014, 2017, 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 |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package jdk.jshell; |
| |
| import com.sun.tools.javac.parser.JavacParser; |
| import com.sun.tools.javac.parser.ParserFactory; |
| import com.sun.tools.javac.parser.ScannerFactory; |
| import com.sun.tools.javac.util.Context; |
| |
| /** |
| * |
| * @author Robert Field |
| */ |
| class ReplParserFactory extends ParserFactory { |
| |
| // force starting in expression mode |
| private final boolean forceExpression; |
| |
| public static void preRegister(Context context, boolean forceExpression) { |
| class Mark {} |
| if (context.get(Mark.class) == null) { //don't register the factory if Context is reused |
| context.put(parserFactoryKey, (Context.Factory<ParserFactory>) |
| (c -> new ReplParserFactory(c, forceExpression))); |
| context.put(Mark.class, new Mark()); |
| } |
| } |
| |
| private final ScannerFactory scannerFactory; |
| |
| protected ReplParserFactory(Context context, boolean forceExpression) { |
| super(context); |
| this.forceExpression = forceExpression; |
| this.scannerFactory = ScannerFactory.instance(context); |
| } |
| |
| @Override |
| public JavacParser newParser(CharSequence input, boolean keepDocComments, boolean keepEndPos, boolean keepLineMap) { |
| com.sun.tools.javac.parser.Lexer lexer = scannerFactory.newScanner(input, keepDocComments); |
| return new ReplParser(this, lexer, keepDocComments, keepLineMap, keepEndPos, forceExpression); |
| } |
| |
| @Override |
| public JavacParser newParser(CharSequence input, boolean keepDocComments, boolean keepEndPos, boolean keepLineMap, boolean parseModuleInfo) { |
| return newParser(input, keepDocComments, keepEndPos, keepLineMap); |
| } |
| } |