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// bsn GoldParser .NET Engine
// --------------------------
//
// Copyright 2009, 2010 by Arsène 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;
namespace bsn.GoldParser.Grammar {
/// <summary>
/// The base class for the grammar objects <see cref="DfaState"/>, <see cref="LalrAction"/>, <see cref="LalrState"/>, <see cref="Rule"/> and <see cref="Symbol"/>.
/// </summary>
/// <typeparam name="TSelf">The type of the grammar object implemented (self).</typeparam>
public abstract class GrammarObject<TSelf>: IEquatable<TSelf> where TSelf: GrammarObject<TSelf> {
private readonly int index;
private readonly CompiledGrammar owner;
/// <summary>
/// Initializes a new instance of the <see cref="GrammarObject<TSelf>"/> class.
/// </summary>
/// <param name="owner">The owner grammar.</param>
/// <param name="index">The index.</param>
protected GrammarObject(CompiledGrammar owner, int index) {
this.owner = owner;
this.index = index;
}
/// <summary>
/// Gets index of grammar object in the <see cref="CompiledGrammar"/>.
/// </summary>
public int Index {
get {
return index;
}
}
/// <summary>
/// Gets the owner.
/// </summary>
/// <value>The owner.</value>
public CompiledGrammar Owner {
get {
return owner;
}
}
public override sealed bool Equals(object other) {
return ReferenceEquals(this, other);
}
public override sealed int GetHashCode() {
return base.GetHashCode();
}
public bool Equals(TSelf other) {
return ReferenceEquals(this, other);
}
}
}
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