forked from jasder/antlr
104 lines
3.8 KiB
C#
104 lines
3.8 KiB
C#
/*
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* [The "BSD license"]
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* Copyright (c) 2013 Terence Parr
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* Copyright (c) 2013 Sam Harwell
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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using System;
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using Antlr4.Runtime;
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using Antlr4.Runtime.Misc;
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using Sharpen;
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namespace Antlr4.Runtime
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{
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public class CommonTokenFactory : ITokenFactory
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{
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public static readonly ITokenFactory Default = new Antlr4.Runtime.CommonTokenFactory
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();
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/// <summary>Copy text for token out of input char stream.</summary>
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/// <remarks>
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/// Copy text for token out of input char stream. Useful when input
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/// stream is unbuffered.
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/// </remarks>
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/// <seealso cref="UnbufferedCharStream">UnbufferedCharStream</seealso>
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protected internal readonly bool copyText;
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/// <summary>
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/// Create factory and indicate whether or not the factory copy
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/// text out of the char stream.
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/// </summary>
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/// <remarks>
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/// Create factory and indicate whether or not the factory copy
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/// text out of the char stream.
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/// </remarks>
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public CommonTokenFactory(bool copyText)
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{
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this.copyText = copyText;
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}
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public CommonTokenFactory() : this(false)
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{
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}
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public virtual CommonToken Create(Tuple<ITokenSource, ICharStream> source, int type, string text,
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int channel, int start, int stop, int line, int charPositionInLine)
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{
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CommonToken t = new CommonToken(source, type, channel, start, stop);
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t.Line = line;
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t.Column = charPositionInLine;
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if (text != null)
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{
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t.Text = text;
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}
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else
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{
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if (copyText && source.Item2 != null)
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{
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t.Text = source.Item2.GetText(Interval.Of(start, stop));
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}
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}
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return t;
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}
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IToken ITokenFactory.Create(Tuple<ITokenSource, ICharStream> source, int type, string text,
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int channel, int start, int stop, int line, int charPositionInLine)
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{
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return Create(source, type, text, channel, start, stop, line, charPositionInLine);
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}
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public virtual CommonToken Create(int type, string text)
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{
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return new CommonToken(type, text);
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}
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IToken ITokenFactory.Create(int type, string text)
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{
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return Create(type, text);
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}
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}
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}
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