static IEnumerable <ParseResult> TryParse(CommandGeneratorResult result, LoaderFacetFactory lff, ParseInput input, ParseMode mode,
IList <TypeMoniker> facetTypes)
{
try
{
return(lff.Factory.Parse(input.RewriteInput(lff, false), mode, facetTypes));
}
catch (RequiresConfigurationException ex)
{
result.AddRCException(ex);
return(null);
}
catch (OutOfMemoryException)
{
throw;
}
catch
{
return(null);
}
}
public static CommandGeneratorResult GenerateCommands(string commandText, int insertionPointIndex)
{
// TODO: plinq the whole thing
if (commandText == null)
{
throw new ArgumentNullException("commandText");
}
if (insertionPointIndex < -1 || insertionPointIndex > commandText.Length)
{
throw new ArgumentOutOfRangeException("insertionPointIndex");
}
if (commandText.Length == 0)
{
return(new CommandGeneratorResult());
}
Command[] potentialCommands;
CommandExecutor[] potentialPartialCommands;
var commandsFiltered = false;
// TODO: delimiter for TextFacet -- possibly a colon. Solves for problem illustrated in example
// here, which is that the second "Bob" may be parsed as a contact and excluded from the
// "remaining text" logic: >email bob: Bob, Lunch?
if (commandText[0] == '>')
{
var cmdName = commandText.Skip(1).TakeWhile(x => !Char.IsWhiteSpace(x)).CharsToString();
if (cmdName.Length == 0)
{
return(new CommandGeneratorResult());
}
var trimmed = commandText.Substring(cmdName.Length + 1).TrimStart();
insertionPointIndex -= commandText.Length - trimmed.Length;
commandText = trimmed;
var pca =
(from cinfo in Loader.Commands
from a in cinfo.Aliases
where a.StartsWith(cmdName, StringComparison.CurrentCultureIgnoreCase)
select cinfo.Command).ToArray();
var ppca = CommandHistory.LoadPartialCommands(cmdName).ToArray();
if (pca.Length == 0 && ppca.Length == 0)
{
return(new CommandGeneratorResult());
}
potentialCommands = pca;
potentialPartialCommands = ppca;
commandsFiltered = true;
}
else
{
potentialCommands = Loader.Commands.Select(x => x.Command).ToArray();
potentialPartialCommands = CommandHistory.LoadPartialCommands().ToArray();
}
var pptRegularCommands = potentialCommands
.SelectMany(x => x.Parameters)
.Select(x => x.TypeDescriptor);
var pptPartialCommands = potentialPartialCommands
.SelectMany(x => x.UnspecifiedParameters)
.Select(x => x.TypeDescriptor);
var potentialParameterTypes = pptRegularCommands
.Union(pptPartialCommands)
.ToArray();
var potentialFacetTypes = Loader.GetFacetTypesForParameterTypes(potentialParameterTypes)
.Select(x => x.TypeDescriptor)
.Concat(TypeDescriptor.Get(typeof(TextFacet)))
.Distinct()
.ToArray();
var potentialFactories = Loader
.GetFacetFactoriesForFacetTypes(potentialFacetTypes)
.ToArray();
if (potentialFacetTypes.Length == 0)
{
return(new CommandGeneratorResult());
}
var input = new ParseInput(commandText, insertionPointIndex);
var allResults = new List <ParseResult>();
var rvl = new CommandGeneratorResult();
if (commandText.Length > 0)
{
var outConfigurationExceptions = new List <RequiresConfigurationException>();
// TODO: parallelize the different forms of parsing (perfect multithreading opportunity)
var potentialFacetMonikers = potentialFacetTypes.Select(x => x.Moniker).ToArray();
var dynamicResults =
(from f in potentialFactories
where !(f.Factory is IFacetFactoryWithIndex)
let result = TryParse(rvl, f, input, ParseMode.All, potentialFacetMonikers)
where result != null
from r in result
select r).ToArray();
var indexResults = FacetIndex.Parse(
potentialFactories.Select(x => x.Factory).OfType <IFacetFactoryWithIndex>(),
potentialFacetTypes,
input,
ParseMode.All,
outConfigurationExceptions).ToArray();
var historyResults = FacetIndex.ParseFromHistory(potentialFacetTypes, input).ToArray();
allResults =
(from r in dynamicResults.Union(indexResults).Union(historyResults)
orderby r.Range.StartIndex
select r).ToList();
foreach (var ex in outConfigurationExceptions)
{
rvl.AddRCException(ex);
}
// is this right commented out?
//if (allResults.Count == 0)
{
allResults.Add(CreateTextFacetResult(input, new ParseRange(0, input.Text.Length)));
}
}
var groupedResults = allResults
.GroupBy(x => x.Range)
.ToDictionary(x => x.Key, x => x.ToArray());
var rangeLists = CreateRangeLists(input, groupedResults.Keys);
var commands = CreateCommandsFromResultLists(input, rangeLists, groupedResults,
potentialCommands, potentialPartialCommands, commandsFiltered);
foreach (var cmd in commands.Distinct())
{
rvl.AddExecutor(cmd);
}
return(rvl);
}
