forked from jasder/antlr
90 lines
3.3 KiB
C#
90 lines
3.3 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.Globalization;
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using Antlr4.Runtime;
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using Antlr4.Runtime.Atn;
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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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[System.Serializable]
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public class LexerNoViableAltException : RecognitionException
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{
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private const long serialVersionUID = -730999203913001726L;
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/// <summary>Matching attempted at what input index?</summary>
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private readonly int startIndex;
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/// <summary>Which configurations did we try at input.index() that couldn't match input.LA(1)?
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/// </summary>
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[Nullable]
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private readonly ATNConfigSet deadEndConfigs;
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public LexerNoViableAltException(Lexer lexer, ICharStream input, int startIndex,
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ATNConfigSet deadEndConfigs) : base(lexer, input)
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{
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this.startIndex = startIndex;
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this.deadEndConfigs = deadEndConfigs;
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}
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public virtual int GetStartIndex()
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{
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return startIndex;
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}
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[Nullable]
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public virtual ATNConfigSet GetDeadEndConfigs()
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{
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return deadEndConfigs;
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}
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public override IIntStream InputStream
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{
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get
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{
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return (ICharStream)base.InputStream;
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}
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}
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public override string ToString()
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{
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string symbol = string.Empty;
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if (startIndex >= 0 && startIndex < ((ICharStream)InputStream).Size)
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{
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symbol = ((ICharStream)InputStream).GetText(Interval.Of(startIndex, startIndex));
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symbol = Utils.EscapeWhitespace(symbol, false);
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}
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return string.Format(CultureInfo.CurrentCulture, "%s('%s')", typeof(Antlr4.Runtime.LexerNoViableAltException
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).Name, symbol);
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}
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}
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}
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