private static void ThrowIfSomeVariablesNotExistsInTheList(this VariableDictionary resultVariables, IEnumerable <string> list)
{
var unknownVariables = resultVariables.GetAllUsages()
.Where(u => !list.Contains(u.Source.Name)).ToList();
if (unknownVariables.Any())
{
throw ErrorFactory.UnknownVariables(unknownVariables.SelectMany(u => u.Usages));
}
}
private IExpressionNode BuildAnonymousFunction(Interval interval, ISyntaxNode body,
VariableDictionary localVariables, VariableSource[] arguments)
{
var sources = localVariables.GetAllSources().ToArray();
var originVariables = new string[sources.Length];
for (int i = 0; i < originVariables.Length; i++)
{
originVariables[i] = sources[i].Name;
}
var expr = BuildExpression(body, _functions, localVariables, _typeInferenceResults, _typesConverter);
//New variables are new closured
var closured = localVariables.GetAllUsages()
.Where(s => !originVariables.Contains(s.Source.Name))
.ToList();
if (closured.Any(c => Helper.DoesItLooksLikeSuperAnonymousVariable(c.Source.Name)))
{
throw FunParseException.ErrorStubToDo("Unexpected it* variable");
}
//Add closured vars to outer-scope dictionary
foreach (var newVar in closured)
{
_variables.TryAdd(newVar); //add full usage info to allow analyze outer errors
}
var fun = ConcreteUserFunction.Create(
isRecursive: false,
name: "anonymous",
variables: arguments,
isReturnTypeStrictlyTyped: false,
expression: expr);
return(new FunVariableExpressionNode(fun, interval));
}