/// <summary>
/// Creates a structurally equivalent ancestor initial context from a given context.
/// </summary>
/// <param name="context">The context to copy the structure from.</param>
/// <returns>A structurally equivalent copy of the given segment.</returns>
public static IStonAncestorInitialContext Copy(IStonAncestorInitialContext context)
{
if (context == null)
{
throw new ArgumentNullException("context");
}
return(new StonAncestorInitialContext(context));
}
/// <summary>
/// Checks the validity of a given STON ancestor initial context.
/// </summary>
/// <param name="initialContext">The initial context to check the validity of.</param>
public static void ValidateInitialContext(IStonAncestorInitialContext initialContext)
{
if (initialContext == null)
{
throw new ArgumentNullException("initialContext");
}
if (initialContext.AncestorOrder < 0)
{
throw new StonException("An ancestor initial context must have a positive ancestor order.");
}
}
// writes a reference defining initial context or an ancestor initial context
private void WriteInitialContext(StonTokenWriter writer, IStonAncestorInitialContext context)
{
if (context.AncestorOrder == 0)
{
writer.Write('$');
}
else
{
writer.Write(new string('^', context.AncestorOrder));
}
}
/// <summary>
/// Creates a structurally equivalent ancestor initial context from a given context.
/// </summary>
/// <param name="context">The context to copy the structure from.</param>
public StonAncestorInitialContext(IStonAncestorInitialContext context)
: this(context.AncestorOrder)
{
}
