public static List <CommandArgument> PredictUnspecifiedArguments(Command command, List <CommandArgument> arguments)
{
var usages = GetCommandUsages(command);
var scoredUsages = new List <Tuple <CommandUsage, double> >();
foreach (var usage in usages)
{
var nScored = 0;
var totalSimilarity = 0.0;
var maxArgIndex = Math.Min(arguments.Count, usage.Executor.Arguments.Count);
var useful = false;
for (var index = 0; index < maxArgIndex; index++)
{
var usageArgument = usage.Executor.Arguments[index];
if (!usageArgument.IsSpecified)
{
continue;
}
var curArgument = arguments[index];
if (!curArgument.IsSpecified)
{
useful = useful || usageArgument.IsSpecified;
continue;
}
totalSimilarity += CommandGenerator.ScoreSimilarity(curArgument.FacetMoniker, usageArgument.FacetMoniker);
nScored++;
}
if (useful && nScored > 0)
{
scoredUsages.Add(Tuple.Create(usage, totalSimilarity / nScored));
}
}
scoredUsages = scoredUsages.OrderByDescending(x => x.Item2).ToList();
var rvl = new List <CommandArgument>();
for (var i = 0; i < arguments.Count; i++)
{
if (arguments[i].IsSpecified)
{
rvl.Add(arguments[i]);
continue;
}
var parameter = command.Parameters[i];
var argument = CommandArgument.Unspecified;
var usageMonikers = scoredUsages
.Select(x => x.Item1.Executor.Arguments[i])
.Where(x => x.IsSpecified && parameter.IsUsableAsArgument(x.FacetMoniker))
.Select(x => x.FacetMoniker)
.ToArray();
if (usageMonikers.Length > 0)
{
argument = new CommandArgument(usageMonikers, !parameter.Optional);
}
else
{
var mostUsed = GetMostUsedFacets(parameter, 5);
if (mostUsed.Length > 0)
{
argument = new CommandArgument(mostUsed, !parameter.Optional);
}
}
rvl.Add(argument);
}
return(rvl);
}