private static Identifier InternalFromSource([SuppressMessage("Microsoft.Globalization", "CA1303")] string text, bool allowInvalid)
{
if (text == null)
{
throw ExceptionBuilder.ArgumentNull("text");
}
if (text.Length == 0 || (text[0] != '"' && text[0] != '['))
{
return(CreateNonVerbatim(text));
}
const char EOF = '\0';
IdentifierFlags flags;
char endChar;
string unterminatedMessage;
if (text[0] == '[')
{
endChar = ']';
unterminatedMessage = Resources.UnterminatedParenthesizedIdentifier;
flags = IdentifierFlags.Parenthesized;
}
else
{
endChar = '"';
unterminatedMessage = Resources.UnterminatedQuotedIdentifier;
flags = IdentifierFlags.Verbatim;
}
StringBuilder sb = new StringBuilder();
int pos = 1;
while (true)
{
char c = pos < text.Length ? text[pos] : EOF;
char l = pos < text.Length - 1 ? text[pos + 1] : EOF;
if (c == EOF)
{
if (allowInvalid)
{
break;
}
else
{
throw ExceptionBuilder.ArgumentInvalidIdentifier("text", String.Format(CultureInfo.CurrentCulture, unterminatedMessage, text));
}
}
else if (c == endChar)
{
if (l == endChar)
{
pos++;
}
else
{
break;
}
}
sb.Append(c);
pos++;
}
if (!allowInvalid && pos < text.Length - 1)
{
throw ExceptionBuilder.ArgumentInvalidIdentifier("text", String.Format(CultureInfo.CurrentCulture, Resources.InvalidIdentifier, text));
}
return(new Identifier(sb.ToString(), flags));
}