| /* |
| * Copyright (c) 1999, 2010, 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 com.sun.tools.javac.parser; |
| |
| import java.nio.CharBuffer; |
| |
| import com.sun.tools.javac.code.Source; |
| import com.sun.tools.javac.util.Context; |
| import com.sun.tools.javac.util.Log; |
| import com.sun.tools.javac.util.Names; |
| |
| |
| /** |
| * A factory for creating scanners. |
| * |
| * <p><b>This is NOT part of any supported API. |
| * If you write code that depends on this, you do so at your own |
| * risk. This code and its internal interfaces are subject to change |
| * or deletion without notice.</b> |
| */ |
| public class ScannerFactory { |
| /** The context key for the scanner factory. */ |
| public static final Context.Key<ScannerFactory> scannerFactoryKey = new Context.Key<>(); |
| |
| /** Get the Factory instance for this context. */ |
| public static ScannerFactory instance(Context context) { |
| ScannerFactory instance = context.get(scannerFactoryKey); |
| if (instance == null) |
| instance = new ScannerFactory(context); |
| return instance; |
| } |
| |
| final Log log; |
| final Names names; |
| final Source source; |
| final Tokens tokens; |
| |
| /** Create a new scanner factory. */ |
| protected ScannerFactory(Context context) { |
| context.put(scannerFactoryKey, this); |
| this.log = Log.instance(context); |
| this.names = Names.instance(context); |
| this.source = Source.instance(context); |
| this.tokens = Tokens.instance(context); |
| } |
| |
| public Scanner newScanner(CharSequence input, boolean keepDocComments) { |
| if (input instanceof CharBuffer) { |
| CharBuffer buf = (CharBuffer) input; |
| if (keepDocComments) |
| return new Scanner(this, new JavadocTokenizer(this, buf)); |
| else |
| return new Scanner(this, buf); |
| } else { |
| char[] array = input.toString().toCharArray(); |
| return newScanner(array, array.length, keepDocComments); |
| } |
| } |
| |
| public Scanner newScanner(char[] input, int inputLength, boolean keepDocComments) { |
| if (keepDocComments) |
| return new Scanner(this, new JavadocTokenizer(this, input, inputLength)); |
| else |
| return new Scanner(this, input, inputLength); |
| } |
| } |