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// bsn GoldParser .NET Engine
// --------------------------
//
// Copyright 2009, 2010 by Ars�ne von Wyss - avw@gmx.ch
//
// Development has been supported by Sirius Technologies AG, Basel
//
// Source:
//
// https://bsn-goldparser.googlecode.com/hg/
//
// License:
//
// The library is distributed under the GNU Lesser General Public License:
// http://www.gnu.org/licenses/lgpl.html
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program 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 Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
//
using System;
using bsn.GoldParser.Grammar;
namespace bsn.GoldParser.Parser {
/// <summary>
/// Represents data about current token.
/// </summary>
public sealed class TextToken: Token {
private readonly LineInfo position; // Token source line number.
private readonly Symbol symbol; // Token symbol.
private readonly string text; // Token text.
internal TextToken(Symbol symbol, LineInfo position, string text) {
if (symbol == null) {
throw new ArgumentNullException("symbol");
}
if (text == null) {
throw new ArgumentNullException("text");
}
this.symbol = symbol;
this.position = position;
this.text = this.symbol.Name.Equals(text, StringComparison.Ordinal) ? this.symbol.Name : text; // "intern" short strings which are equal to the terminal name
}
public override LineInfo Position {
get {
return position;
}
}
public override Symbol Symbol {
get {
return symbol;
}
}
public override string Text {
get {
return text;
}
}
public override string ToString() {
return text;
}
}
}
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