84 lines
2.5 KiB
C#
84 lines
2.5 KiB
C#
/*
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* Copyright (c) 2019-2024, Sjofn LLC
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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 are met:
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*
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* - Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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* - Neither the name of the openmetaverse.co nor the names
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* of its contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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using System.IO;
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namespace LibreMetaverse.LslTools
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{
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internal class ReStr : Regex
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{
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public string m_str = "";
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public ReStr()
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{
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}
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public ReStr(TokensGen tks, string str)
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{
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this.m_str = str;
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foreach (var c in str)
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tks.m_tokens.UsingChar(c);
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}
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public ReStr(TokensGen tks, char ch)
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{
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this.m_str = new string(ch, 1);
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tks.m_tokens.UsingChar(ch);
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}
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public override void Print(TextWriter s)
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{
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s.Write($"(\"{(object)this.m_str}\")");
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}
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public override int Match(string str, int pos, int max)
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{
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int length = this.m_str.Length;
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if (length > max || length > max - pos)
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return -1;
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for (int index = 0; index < length; ++index)
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{
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if ((int) str[index] != (int) this.m_str[index])
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return -1;
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}
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return length;
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}
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public override void Build(Nfa nfa)
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{
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int length = this.m_str.Length;
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NfaNode nfaNode = (NfaNode) nfa;
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for (int index = 0; index < length; ++index)
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{
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NfaNode next = new NfaNode(nfa.m_tks);
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nfaNode.AddArc(this.m_str[index], next);
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nfaNode = next;
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}
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nfaNode.AddEps(nfa.m_end);
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}
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}
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}
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