private static IAnalysisSet BackboneExtendSpecializationImpl(FunctionValue func, Node node, AnalysisUnit unit, IAnalysisSet @this, IAnalysisSet[] args) {
IAnalysisSet res = AnalysisSet.Empty;
BackboneExtendFunctionValue value;
if (!unit._env.GlobalEnvironment.TryGetNodeValue(NodeEnvironmentKind.ExtendCall, node, out res)) {
value = new BackboneExtendFunctionValue(
unit.ProjectEntry
);
res = value.SelfSet;
unit._env.GlobalEnvironment.AddNodeValue(
NodeEnvironmentKind.ExtendCall,
node,
value.SelfSet
);
} else {
value = (BackboneExtendFunctionValue)res.First().Value;
}
if (@this != null) {
value._instance.SetMember(
node,
unit,
"__proto__",
@this.Construct(node, unit, args)
);
}
if (args.Length > 0) {
if (args[0].Count < unit.Analyzer.Limits.MaxMergeTypes) {
foreach (var protoProps in args[0]) {
ExpandoValue expandoProto = protoProps.Value as ExpandoValue;
if (expandoProto != null) {
value._prototype.AddLinkedValue(unit, expandoProto);
}
}
}
}
if (args.Length > 1) {
if (args[1].Count < unit.Analyzer.Limits.MaxMergeTypes) {
foreach (var protoProps in args[1]) {
ExpandoValue expandoProto = protoProps.Value as ExpandoValue;
if (expandoProto != null) {
value.AddLinkedValue(unit, expandoProto);
}
}
}
}
return res;
}
