inversify
Version:
A powerful and lightweight inversion of control container for JavaScript and Node.js apps powered by TypeScript.
136 lines (135 loc) • 6.91 kB
JavaScript
var __spreadArray = (this && this.__spreadArray) || function (to, from, pack) {
if (pack || arguments.length === 2) for (var i = 0, l = from.length, ar; i < l; i++) {
if (ar || !(i in from)) {
if (!ar) ar = Array.prototype.slice.call(from, 0, i);
ar[i] = from[i];
}
}
return to.concat(ar || Array.prototype.slice.call(from));
};
import { LazyServiceIdentifier } from '../annotation/lazy_service_identifier';
import * as ERROR_MSGS from '../constants/error_msgs';
import { TargetTypeEnum } from '../constants/literal_types';
import * as METADATA_KEY from '../constants/metadata_keys';
import { getFunctionName } from '../utils/serialization';
import { Target } from './target';
function getDependencies(metadataReader, func) {
var constructorName = getFunctionName(func);
return getTargets(metadataReader, constructorName, func, false);
}
function getTargets(metadataReader, constructorName, func, isBaseClass) {
var metadata = metadataReader.getConstructorMetadata(func);
var serviceIdentifiers = metadata.compilerGeneratedMetadata;
if (serviceIdentifiers === undefined) {
var msg = ERROR_MSGS.MISSING_INJECTABLE_ANNOTATION + " " + constructorName + ".";
throw new Error(msg);
}
var constructorArgsMetadata = metadata.userGeneratedMetadata;
var keys = Object.keys(constructorArgsMetadata);
var hasUserDeclaredUnknownInjections = (func.length === 0 && keys.length > 0);
var hasOptionalParameters = keys.length > func.length;
var iterations = (hasUserDeclaredUnknownInjections || hasOptionalParameters) ? keys.length : func.length;
var constructorTargets = getConstructorArgsAsTargets(isBaseClass, constructorName, serviceIdentifiers, constructorArgsMetadata, iterations);
var propertyTargets = getClassPropsAsTargets(metadataReader, func, constructorName);
var targets = __spreadArray(__spreadArray([], constructorTargets, true), propertyTargets, true);
return targets;
}
function getConstructorArgsAsTarget(index, isBaseClass, constructorName, serviceIdentifiers, constructorArgsMetadata) {
var targetMetadata = constructorArgsMetadata[index.toString()] || [];
var metadata = formatTargetMetadata(targetMetadata);
var isManaged = metadata.unmanaged !== true;
var serviceIdentifier = serviceIdentifiers[index];
var injectIdentifier = metadata.inject || metadata.multiInject;
serviceIdentifier = (injectIdentifier ? injectIdentifier : serviceIdentifier);
if (serviceIdentifier instanceof LazyServiceIdentifier) {
serviceIdentifier = serviceIdentifier.unwrap();
}
if (isManaged) {
var isObject = serviceIdentifier === Object;
var isFunction = serviceIdentifier === Function;
var isUndefined = serviceIdentifier === undefined;
var isUnknownType = isObject || isFunction || isUndefined;
if (!isBaseClass && isUnknownType) {
var msg = ERROR_MSGS.MISSING_INJECT_ANNOTATION + " argument " + index + " in class " + constructorName + ".";
throw new Error(msg);
}
var target = new Target(TargetTypeEnum.ConstructorArgument, metadata.targetName, serviceIdentifier);
target.metadata = targetMetadata;
return target;
}
return null;
}
function getConstructorArgsAsTargets(isBaseClass, constructorName, serviceIdentifiers, constructorArgsMetadata, iterations) {
var targets = [];
for (var i = 0; i < iterations; i++) {
var index = i;
var target = getConstructorArgsAsTarget(index, isBaseClass, constructorName, serviceIdentifiers, constructorArgsMetadata);
if (target !== null) {
targets.push(target);
}
}
return targets;
}
function _getServiceIdentifierForProperty(inject, multiInject, propertyName, className) {
var serviceIdentifier = (inject || multiInject);
if (serviceIdentifier === undefined) {
var msg = ERROR_MSGS.MISSING_INJECTABLE_ANNOTATION + " for property " + String(propertyName) + " in class " + className + ".";
throw new Error(msg);
}
return serviceIdentifier;
}
function getClassPropsAsTargets(metadataReader, constructorFunc, constructorName) {
var classPropsMetadata = metadataReader.getPropertiesMetadata(constructorFunc);
var targets = [];
var symbolKeys = Object.getOwnPropertySymbols(classPropsMetadata);
var stringKeys = Object.keys(classPropsMetadata);
var keys = stringKeys.concat(symbolKeys);
for (var _i = 0, keys_1 = keys; _i < keys_1.length; _i++) {
var key = keys_1[_i];
var targetMetadata = classPropsMetadata[key];
var metadata = formatTargetMetadata(targetMetadata);
var identifier = metadata.targetName || key;
var serviceIdentifier = _getServiceIdentifierForProperty(metadata.inject, metadata.multiInject, key, constructorName);
var target = new Target(TargetTypeEnum.ClassProperty, identifier, serviceIdentifier);
target.metadata = targetMetadata;
targets.push(target);
}
var baseConstructor = Object.getPrototypeOf(constructorFunc.prototype).constructor;
if (baseConstructor !== Object) {
var baseTargets = getClassPropsAsTargets(metadataReader, baseConstructor, constructorName);
targets = __spreadArray(__spreadArray([], targets, true), baseTargets, true);
}
return targets;
}
function getBaseClassDependencyCount(metadataReader, func) {
var baseConstructor = Object.getPrototypeOf(func.prototype).constructor;
if (baseConstructor !== Object) {
var baseConstructorName = getFunctionName(baseConstructor);
var targets = getTargets(metadataReader, baseConstructorName, baseConstructor, true);
var metadata = targets.map(function (t) { return t.metadata.filter(function (m) { return m.key === METADATA_KEY.UNMANAGED_TAG; }); });
var unmanagedCount = [].concat.apply([], metadata).length;
var dependencyCount = targets.length - unmanagedCount;
if (dependencyCount > 0) {
return dependencyCount;
}
else {
return getBaseClassDependencyCount(metadataReader, baseConstructor);
}
}
else {
return 0;
}
}
function formatTargetMetadata(targetMetadata) {
var targetMetadataMap = {};
targetMetadata.forEach(function (m) {
targetMetadataMap[m.key.toString()] = m.value;
});
return {
inject: targetMetadataMap[METADATA_KEY.INJECT_TAG],
multiInject: targetMetadataMap[METADATA_KEY.MULTI_INJECT_TAG],
targetName: targetMetadataMap[METADATA_KEY.NAME_TAG],
unmanaged: targetMetadataMap[METADATA_KEY.UNMANAGED_TAG]
};
}
export { getDependencies, getBaseClassDependencyCount, getFunctionName };