public IFunction FindFunction(string name, IReadOnlyList <TypeId> arguments)
{
var normalizedName = NormalizeFunctionName(name);
if (!_functions.TryGetValue(normalizedName, out var functions))
{
return(null);
}
// find function with minimal conversion cost
var minCost = int.MaxValue;
IFunction minFunction = null;
foreach (var function in functions)
{
if (function.Arguments.Count != arguments.Count)
{
continue;
}
var cost = _converter.ComputeConversionCost(arguments, function.Arguments);
if (cost < minCost)
{
minCost = cost;
minFunction = function;
}
}
return(minFunction);
}
