public void Interpret(Cmd cmd)
{
try
{
if (!map.ContainsKey(cmd.Name.Lexeme))
{
throw new InterpretationError($"Command '{cmd.Name.Lexeme}' does not exist");
}
Execute(map[cmd.Name.Lexeme], cmd);
}
catch (InterpretationError e)
{
clti.WriteError(e.Message);
}
}
public Cmd?Parse(List <Token> ts)
{
tokens = ts;
try
{
return(ParseCommand());
}
catch (ParseError e)
{
clti.WriteError(e.Message);
return(null);
}
}
// Lex: string -> List<Token>
public List <Token> Lex(string s)
{
xs = s;
try
{
Scan();
tokens.Print();
return(tokens);
}
catch (LexError e)
{
clti.WriteError(e.Message);
return(new List <Token>());
}
}