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import * as METADATA_KEY from "../constants/metadata_keys";
import { Metadata } from "../planning/metadata";
var traverseAncerstors = function (request, constraint) {
var parent = request.parentRequest;
if (parent !== null) {
return constraint(parent) ? true : traverseAncerstors(parent, constraint);
}
else {
return false;
}
};
var taggedConstraint = function (key) { return function (value) {
var constraint = function (request) {
return request !== null && request.target !== null && request.target.matchesTag(key)(value);
};
constraint.metaData = new Metadata(key, value);
return constraint;
}; };
var namedConstraint = taggedConstraint(METADATA_KEY.NAMED_TAG);
var typeConstraint = function (type) { return function (request) {
var binding = null;
if (request !== null) {
binding = request.bindings[0];
if (typeof type === "string") {
var serviceIdentifier = binding.serviceIdentifier;
return serviceIdentifier === type;
}
else {
var constructor = request.bindings[0].implementationType;
return type === constructor;
}
}
return false;
}; };
export { traverseAncerstors, taggedConstraint, namedConstraint, typeConstraint };
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