private CommandTree ParseCommand(
CommandTreeParserContext context,
ICommandContainer current,
CommandTree parent,
TokenStream stream)
{
context.ResetArgumentPosition();
// Find the command.
var commandToken = stream.Consume(Token.Type.String);
var command = current.FindCommand(commandToken.Value);
if (command == null)
{
throw new CommandAppException($"Unknown command '{commandToken.Value}'.");
}
var node = new CommandTree(parent, command);
while (stream.Peek() != null)
{
var token = stream.Peek();
switch (token.TokenType)
{
case Token.Type.LongOption:
// Long option
ParseOption(context, stream, node, true);
break;
case Token.Type.ShortOption:
// Short option
ParseOption(context, stream, node, false);
break;
case Token.Type.String:
// Command
ParseString(context, stream, node);
break;
default:
throw new InvalidOperationException("Unknown token type.");
}
}
// Add unmapped parameters.
foreach (var parameter in node.Command.Parameters)
{
if (node.Mapped.All(m => m.Item1 != parameter))
{
node.Unmapped.Add(parameter);
}
}
return(node);
}
