//------------------------------------------------------------
// CTextReader.Assign
//
/// <summary></summary>
/// <param name="src"></param>
//------------------------------------------------------------
internal void Assign(CTextReader src)
{
DebugUtil.Assert(src != null);
this.text = src.text;
this.Index = src.Index;
}
//------------------------------------------------------------
// CTextReader.Substring
//
/// <summary>
/// Return the substring of this.text [this.Index, end.Index)
/// </summary>
/// <param name="end"></param>
/// <returns></returns>
//------------------------------------------------------------
internal string Substring(CTextReader end)
{
DebugUtil.Assert(this.text != null && end != null && end.text != null);
if (this.text != end.text)
{
return(null);
}
if (!this.ValidIndex() || !end.ValidIndex())
{
return(null);
}
if (this.Index >= end.Index)
{
return(null);
}
return(this.text.Substring(this.Index, end.Index - this.Index));
}
//------------------------------------------------------------
// CTextReader Constructor (4)
//
/// <summary></summary>
/// <param name="src"></param>
//------------------------------------------------------------
internal CTextReader(CTextReader src)
{
Assign(src);
}
