private CommandTree ParseCommand(
CommandTreeParserContext context,
ICommandContainer current,
CommandTree?parent,
CommandTreeTokenStream stream)
{
// Find the command.
var commandToken = stream.Consume(CommandTreeToken.Kind.String);
if (commandToken == null)
{
throw new CommandRuntimeException("Could not consume token when parsing command.");
}
var command = current.FindCommand(commandToken.Value, CaseSensitivity);
if (command == null)
{
throw CommandParseException.UnknownCommand(_configuration, parent, context.Arguments, commandToken);
}
return(ParseCommandParameters(context, command, parent, stream));
}
private void ParseString(
CommandTreeParserContext context,
CommandTreeTokenStream stream,
CommandTree node)
{
if (context.State == State.Remaining)
{
stream.Consume(CommandTreeToken.Kind.String);
return;
}
var token = stream.Expect(CommandTreeToken.Kind.String);
// Command?
var command = node.Command.FindCommand(token.Value, CaseSensitivity);
if (command != null)
{
if (context.State == State.Normal)
{
node.Next = ParseCommand(context, node.Command, node, stream);
}
return;
}
// Current command has no arguments?
if (!node.HasArguments())
{
throw CommandParseException.UnknownCommand(_configuration, node, context.Arguments, token);
}
// Argument?
var parameter = node.FindArgument(context.CurrentArgumentPosition);
if (parameter == null)
{
// No parameters left. Any commands after this?
if (node.Command.Children.Count > 0 || node.Command.IsDefaultCommand)
{
throw CommandParseException.UnknownCommand(_configuration, node, context.Arguments, token);
}
throw CommandParseException.CouldNotMatchArgument(context.Arguments, token);
}
// Yes, this was an argument.
if (parameter.ParameterKind == ParameterKind.Vector)
{
// Vector
var current = stream.Current;
while (current?.TokenKind == CommandTreeToken.Kind.String)
{
var value = stream.Consume(CommandTreeToken.Kind.String)?.Value;
node.Mapped.Add(new MappedCommandParameter(parameter, value));
current = stream.Current;
}
}
else
{
// Scalar
var value = stream.Consume(CommandTreeToken.Kind.String)?.Value;
node.Mapped.Add(new MappedCommandParameter(parameter, value));
context.IncreaseArgumentPosition();
}
}