static INamedExpressionTuple AssignArguments(NamedCollection <IArgumentInstance> instances, INamedExpressionTuple arguments)
{
var result = new NamedExpressionTuple();
var o = arguments.Tuple.Count - instances.Count;
foreach (var instance in instances)
{
// TODO: check that conversion exists
result.Tuple.Add(arguments.Tuple[o]);
arguments.Tuple.RemoveAt(o);
}
// TODO: check that enough arguments are given
return(result);
}
static IExpression ParseFunctionOverloads(IList <IFunctionInstance> pool, INamedExpressionTuple leftArguments, IEnumerator <TokenData> tokens, IContext context, ref bool done)
{
var range = tokens.Current.Range;
INamedExpressionTuple rightArguments = new NamedExpressionTuple();
if (!tokens.MoveNext())
{
done = true;
return(CreateFunctionInvocation(pool, range, leftArguments, rightArguments));
}
var filteredPool = FilterFunctionLeftArguments(pool, leftArguments);
filteredPool = ParseAndFilterFunctionRightArguments(filteredPool, ref rightArguments, tokens, context, ref done);
if (filteredPool.Count != 1)
{
return(null);
}
// TODO: proper error handling
return(CreateFunctionInvocation(filteredPool.First(), range, leftArguments, rightArguments));
}
static IExpression ExtractResultValues(ILocalValueScope localValues, IExpression result, ArgumentInstanceCollection results)
{
if (results.IsEmpty())
{
return(null);
}
if (results.Count == 1 && results.First().Name == null)
{
return(result);
}
var expressionTuple = new NamedExpressionTuple();
foreach (var namedResult in results)
{
var value = localValues[namedResult];
expressionTuple.Tuple.Add(
new NamedExpression {
Name = namedResult.Name,
Expression = value
});
}
return(expressionTuple);
}
