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49 lines
1.9 KiB
49 lines
1.9 KiB
4 weeks ago
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import { POST_CONSTRUCT_ERROR } from "../constants/error_msgs";
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import { TargetTypeEnum } from "../constants/literal_types";
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import * as METADATA_KEY from "../constants/metadata_keys";
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function _injectProperties(instance, childRequests, resolveRequest) {
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var propertyInjectionsRequests = childRequests.filter(function (childRequest) {
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return (childRequest.target !== null &&
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childRequest.target.type === TargetTypeEnum.ClassProperty);
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});
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var propertyInjections = propertyInjectionsRequests.map(resolveRequest);
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propertyInjectionsRequests.forEach(function (r, index) {
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var propertyName = "";
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propertyName = r.target.name.value();
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var injection = propertyInjections[index];
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instance[propertyName] = injection;
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});
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return instance;
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}
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function _createInstance(Func, injections) {
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return new (Func.bind.apply(Func, [void 0].concat(injections)))();
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}
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function _postConstruct(constr, result) {
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if (Reflect.hasMetadata(METADATA_KEY.POST_CONSTRUCT, constr)) {
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var data = Reflect.getMetadata(METADATA_KEY.POST_CONSTRUCT, constr);
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try {
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result[data.value]();
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}
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catch (e) {
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throw new Error(POST_CONSTRUCT_ERROR(constr.name, e.message));
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}
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}
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}
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function resolveInstance(constr, childRequests, resolveRequest) {
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var result = null;
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if (childRequests.length > 0) {
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var constructorInjectionsRequests = childRequests.filter(function (childRequest) {
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return (childRequest.target !== null && childRequest.target.type === TargetTypeEnum.ConstructorArgument);
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});
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var constructorInjections = constructorInjectionsRequests.map(resolveRequest);
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result = _createInstance(constr, constructorInjections);
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result = _injectProperties(result, childRequests, resolveRequest);
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}
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else {
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result = new constr();
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}
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_postConstruct(constr, result);
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return result;
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}
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export { resolveInstance };
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