inversify
Version:
A powerful and lightweight inversion of control container for JavaScript and Node.js apps powered by TypeScript.
99 lines (98 loc) • 4.61 kB
JavaScript
;
var binding_scope_1 = require("../bindings/binding_scope");
var binding_type_1 = require("../bindings/binding_type");
var target_type_1 = require("../planning/target_type");
var ERROR_MSGS = require("../constants/error_msgs");
var Resolver = (function () {
function Resolver() {
}
Resolver.prototype.resolve = function (context) {
var rootRequest = context.plan.rootRequest;
return this._resolve(rootRequest);
};
Resolver.prototype._resolve = function (request) {
var _this = this;
var bindings = request.bindings;
var childRequests = request.childRequests;
if (request.target && request.target.isArray() &&
(!request.parentRequest.target || !request.parentRequest.target.matchesArray(request.target.serviceIdentifier))) {
return childRequests.map(function (childRequest) { return _this._resolve(childRequest); });
}
else {
var result = null;
var binding = bindings[0];
var isSingleton = binding.scope === binding_scope_1.default.Singleton;
if (isSingleton && binding.activated === true) {
return binding.cache;
}
switch (binding.type) {
case binding_type_1.default.ConstantValue:
result = binding.cache;
break;
case binding_type_1.default.DynamicValue:
result = binding.dynamicValue(request.parentContext);
break;
case binding_type_1.default.Constructor:
result = binding.implementationType;
break;
case binding_type_1.default.Factory:
result = binding.factory(request.parentContext);
break;
case binding_type_1.default.Function:
result = binding.cache;
break;
case binding_type_1.default.Provider:
result = binding.provider(request.parentContext);
break;
case binding_type_1.default.Instance:
var constr = binding.implementationType;
if (childRequests.length > 0) {
var constructorInjectionsRequests = childRequests.filter(function (childRequest) {
return childRequest.target.type === target_type_1.default.ConstructorArgument;
});
var constructorInjections = constructorInjectionsRequests.map(function (childRequest) {
return _this._resolve(childRequest);
});
result = this._createInstance(constr, constructorInjections);
result = this._injectProperties(result, childRequests);
}
else {
result = new constr();
}
break;
case binding_type_1.default.Invalid:
default:
var serviceIdentifier = request.parentContext.kernel.getServiceIdentifierAsString(request.serviceIdentifier);
throw new Error(ERROR_MSGS.INVALID_BINDING_TYPE + " " + serviceIdentifier);
}
if (typeof binding.onActivation === "function") {
result = binding.onActivation(request.parentContext, result);
}
if (isSingleton) {
binding.cache = result;
binding.activated = true;
}
return result;
}
};
Resolver.prototype._injectProperties = function (instance, childRequests) {
var _this = this;
var propertyInjectionsRequests = childRequests.filter(function (childRequest) {
return childRequest.target.type === target_type_1.default.ClassProperty;
});
var propertyInjections = propertyInjectionsRequests.map(function (childRequest) {
return _this._resolve(childRequest);
});
propertyInjectionsRequests.forEach(function (r, index) {
var injection = propertyInjections[index];
instance[r.target.name.value()] = injection;
});
return instance;
};
Resolver.prototype._createInstance = function (Func, injections) {
return new (Func.bind.apply(Func, [void 0].concat(injections)))();
};
return Resolver;
}());
Object.defineProperty(exports, "__esModule", { value: true });
exports.default = Resolver;