private static Keyword CreateKeyword(string name)
{
var validName = TinyLispHelper.IsValidSymbolName(name, true);
if (!validName)
{
throw new ArgumentException($"Invalid keyword name: '{name}'.", nameof(name));
}
var realName = GetRealName(name);
var have = Symbols.TryGetValue(realName, out var existing);
if (have)
{
return((Keyword)existing);
}
var @new = new Keyword(realName);
RegisterSymbol(@new);
return(@new);
}
private static Symbol CreateSymbol(string name)
{
var validName = TinyLispHelper.IsValidSymbolName(name, false);
if (!validName)
{
throw new ArgumentException($"Invalid symbol name: '{name}'.", nameof(name));
}
var realName = GetRealName(name);
var have = Symbols.TryGetValue(realName, out var existing);
if (have)
{
return(existing);
}
var @new = new Symbol(realName);
RegisterSymbol(@new);
return(@new);
}