private IEnumerable<IArgument> InternExecute(IProgramSequence progSeq)
{
IEnumerable<IArgument> result = new IArgument[0];
foreach (ICommand comm in progSeq.Commands)
{
// Get command if exists.
var match = Resolver.Resolve(comm, Environments);
// Execute command and combine with other results.
if (match != null){
result = result.Concat(match.ExecuteCommand());
}
else
throw new UnknownCommandException(comm);
}
return result;
}
/// <summary>
/// A constructor for the program sequence.
/// </summary>
/// <param name="command">The first command of the program sequence.</param>
/// <param name="followingCommands">The rest of the program sequence, as a sub-sequence.</param>
public ProgramSequence(ICommand command, IProgramSequence followingCommands = null)
{
Command = command;
FollowingCommands = followingCommands;
}