public void Visit(CloseDelimiter delimiter)
{
switch (delimiter.Type)
{
case BinaryDelimiterType.Brace:
if (!(_prev is OpenDelimiter && ((OpenDelimiter)_prev).Type == BinaryDelimiterType.Brace) && !IsSliceLiteralTerminal(delimiter))
{
--_indentLevel;
// if we just added a line break due
// to some node don't add another one
if (!(_prev is Terminal || _prev is Tag))
{
_sb.AppendLine();
}
AddIndentation();
}
_sb.Append('}');
break;
case BinaryDelimiterType.Bracket:
_sb.Append(']');
break;
case BinaryDelimiterType.Paren:
if (_prev is ImportEntry)
{
System.Diagnostics.Debug.Assert(_indentLevel == 1);
--_indentLevel;
}
_sb.Append(')');
break;
default:
throw new InvalidOperationException($"unsupported open delimiter {delimiter.Type}");
}
_prev = delimiter;
}
/// <summary>
/// Determines if this closing delimiter is the end of a slice literal (e.g. []string{"foo"}).
/// </summary>
/// <param name="delimiter">The CloseDelimiter object to inspect.</param>
/// <returns>True if this is the closing delimiter of a slice literal.</returns>
private bool IsSliceLiteralTerminal(CloseDelimiter delimiter)
{
if (delimiter.Type != BinaryDelimiterType.Brace)
{
return(false);
}
Node n = delimiter.Parent;
int trip = 0;
while (n != null)
{
if (trip == 4)
{
return(true);
}
else if (n is OpenDelimiter)
{
++trip;
}
else if (n is Identifier)
{
++trip;
}
else if (n is CloseDelimiter && ((CloseDelimiter)n).Type == BinaryDelimiterType.Bracket)
{
++trip;
}
else if (n is OpenDelimiter && ((OpenDelimiter)n).Type == BinaryDelimiterType.Bracket)
{
++trip;
}
n = n.Parent;
}
return(false);
}
