106 lines
3.5 KiB
C#
106 lines
3.5 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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namespace LibreMetaverse.LslTools
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{
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public class Literal : CSymbol
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{
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public Literal(SymbolsGen yyp)
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: base(yyp)
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{
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this.m_symtype = CSymbol.SymType.terminal;
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}
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private Literal()
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{
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}
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public override CSymbol Resolve()
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{
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int length = this.yytext.Length;
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string str = "";
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for (int index = 1; index + 1 < length; ++index)
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{
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if (this.yytext[index] == '\\')
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{
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if (index + 1 < length)
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++index;
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if (this.yytext[index] >= '0' && this.yytext[index] <= '7')
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{
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int num;
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for (num = (int) this.yytext[index++] - 48; index < length && this.yytext[index] >= '0' && this.yytext[index] <= '7'; ++index)
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num = num * 8 + (int) this.yytext[index] - 48;
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str += (string) (object) (char) num;
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}
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else
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{
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char ch = this.yytext[index];
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switch (ch)
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{
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case 'r':
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str += (string) (object) '\r';
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continue;
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case 't':
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str += (string) (object) '\t';
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continue;
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default:
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str = ch == 'n' ? str + (object) '\n' : str + (object) this.yytext[index];
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continue;
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}
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}
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}
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else
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str += (string) (object) this.yytext[index];
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}
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this.yytext = str;
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CSymbol literal = (CSymbol) this.m_parser.m_symbols.literals[(object) this.yytext];
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if (literal != null)
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return literal;
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this.m_yynum = ++this.m_parser.LastSymbol;
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this.m_parser.m_symbols.literals[(object) this.yytext] = (object) this;
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this.m_parser.m_symbols.symbolInfo[(object) this.m_yynum] = (object) new ParsingInfo(this.yytext, this.m_yynum);
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return (CSymbol) this;
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}
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public bool CouldStart(CSymbol nonterm)
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{
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return false;
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}
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public override string TypeStr()
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{
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return "TOKEN";
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}
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public new static object Serialise(object o, Serialiser s)
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{
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if (s == null)
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return (object) new Literal();
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return CSymbol.Serialise(o, s);
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}
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}
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}
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