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// Copyright (c) AlphaSierraPapa for the SharpDevelop Team (for details please see \doc\copyright.txt)
// This code is distributed under MIT X11 license (for details please see \doc\license.txt)
using System;
namespace ICSharpCode.NRefactory.VB.Ast
{
/// <summary>
/// Represents an identifier in VB.
/// </summary>
public class Identifier : AstNode
{
public static readonly new Identifier Null = new NullIdentifier ();
class NullIdentifier : Identifier
{
public override bool IsNull {
get {
return true;
}
}
public override S AcceptVisitor<T, S> (IAstVisitor<T, S> visitor, T data)
{
return default (S);
}
protected internal override bool DoMatch(AstNode other, PatternMatching.Match match)
{
return other == null || other.IsNull;
}
}
string name;
public string Name {
get { return name; }
set {
if (value == null)
throw new ArgumentNullException("value");
name = value;
}
}
public TypeCode TypeCharacter { get; set; }
TextLocation startLocation;
public override TextLocation StartLocation {
get {
return startLocation;
}
}
public override TextLocation EndLocation {
get {
return new TextLocation (StartLocation.Line, StartLocation.Column + Name.Length);
}
}
private Identifier()
{
this.name = string.Empty;
}
public Identifier (string name, TextLocation location)
{
if (name == null)
throw new ArgumentNullException("name");
this.Name = name;
this.startLocation = location;
}
public static implicit operator Identifier(string name)
{
return new Identifier(name, TextLocation.Empty);
}
protected internal override bool DoMatch(AstNode other, ICSharpCode.NRefactory.PatternMatching.Match match)
{
var node = other as Identifier;
return node != null
&& MatchString(node.name, name)
&& node.TypeCharacter == TypeCharacter;
}
public override S AcceptVisitor<T, S>(IAstVisitor<T, S> visitor, T data)
{
return visitor.VisitIdentifier(this, data);
}
public override string ToString()
{
return string.Format("{0}",
name);
}
}
}
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