inversify
Version:
A powerful and lightweight inversion of control container for JavaScript and Node.js apps powered by TypeScript.
156 lines (155 loc) • 7.85 kB
JavaScript
;
var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
Object.defineProperty(o, k2, { enumerable: true, get: function() { return m[k]; } });
}) : (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
o[k2] = m[k];
}));
var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
Object.defineProperty(o, "default", { enumerable: true, value: v });
}) : function(o, v) {
o["default"] = v;
});
var __importStar = (this && this.__importStar) || function (mod) {
if (mod && mod.__esModule) return mod;
var result = {};
if (mod != null) for (var k in mod) if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
__setModuleDefault(result, mod);
return result;
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.getFunctionName = exports.getBaseClassDependencyCount = exports.getDependencies = void 0;
const lazy_service_identifier_1 = require("../annotation/lazy_service_identifier");
const ERROR_MSGS = __importStar(require("../constants/error_msgs"));
const literal_types_1 = require("../constants/literal_types");
const METADATA_KEY = __importStar(require("../constants/metadata_keys"));
const serialization_1 = require("../utils/serialization");
Object.defineProperty(exports, "getFunctionName", { enumerable: true, get: function () { return serialization_1.getFunctionName; } });
const target_1 = require("./target");
function getDependencies(metadataReader, func) {
const constructorName = (0, serialization_1.getFunctionName)(func);
return getTargets(metadataReader, constructorName, func, false);
}
exports.getDependencies = getDependencies;
function getTargets(metadataReader, constructorName, func, isBaseClass) {
const metadata = metadataReader.getConstructorMetadata(func);
const serviceIdentifiers = metadata.compilerGeneratedMetadata;
if (serviceIdentifiers === undefined) {
const msg = `${ERROR_MSGS.MISSING_INJECTABLE_ANNOTATION} ${constructorName}.`;
throw new Error(msg);
}
const constructorArgsMetadata = metadata.userGeneratedMetadata;
const keys = Object.keys(constructorArgsMetadata);
const hasUserDeclaredUnknownInjections = (func.length === 0 && keys.length > 0);
const hasOptionalParameters = keys.length > func.length;
const iterations = (hasUserDeclaredUnknownInjections || hasOptionalParameters) ? keys.length : func.length;
const constructorTargets = getConstructorArgsAsTargets(isBaseClass, constructorName, serviceIdentifiers, constructorArgsMetadata, iterations);
const propertyTargets = getClassPropsAsTargets(metadataReader, func, constructorName);
const targets = [
...constructorTargets,
...propertyTargets
];
return targets;
}
function getConstructorArgsAsTarget(index, isBaseClass, constructorName, serviceIdentifiers, constructorArgsMetadata) {
const targetMetadata = constructorArgsMetadata[index.toString()] || [];
const metadata = formatTargetMetadata(targetMetadata);
const isManaged = metadata.unmanaged !== true;
let serviceIdentifier = serviceIdentifiers[index];
const injectIdentifier = metadata.inject || metadata.multiInject;
serviceIdentifier = (injectIdentifier ? injectIdentifier : serviceIdentifier);
if (serviceIdentifier instanceof lazy_service_identifier_1.LazyServiceIdentifier) {
serviceIdentifier = serviceIdentifier.unwrap();
}
if (isManaged) {
const isObject = serviceIdentifier === Object;
const isFunction = serviceIdentifier === Function;
const isUndefined = serviceIdentifier === undefined;
const isUnknownType = isObject || isFunction || isUndefined;
if (!isBaseClass && isUnknownType) {
const msg = `${ERROR_MSGS.MISSING_INJECT_ANNOTATION} argument ${index} in class ${constructorName}.`;
throw new Error(msg);
}
const target = new target_1.Target(literal_types_1.TargetTypeEnum.ConstructorArgument, metadata.targetName, serviceIdentifier);
target.metadata = targetMetadata;
return target;
}
return null;
}
function getConstructorArgsAsTargets(isBaseClass, constructorName, serviceIdentifiers, constructorArgsMetadata, iterations) {
const targets = [];
for (let i = 0; i < iterations; i++) {
const index = i;
const target = getConstructorArgsAsTarget(index, isBaseClass, constructorName, serviceIdentifiers, constructorArgsMetadata);
if (target !== null) {
targets.push(target);
}
}
return targets;
}
function _getServiceIdentifierForProperty(inject, multiInject, propertyName, className) {
const serviceIdentifier = (inject || multiInject);
if (serviceIdentifier === undefined) {
const msg = `${ERROR_MSGS.MISSING_INJECTABLE_ANNOTATION} for property ${String(propertyName)} in class ${className}.`;
throw new Error(msg);
}
return serviceIdentifier;
}
function getClassPropsAsTargets(metadataReader, constructorFunc, constructorName) {
const classPropsMetadata = metadataReader.getPropertiesMetadata(constructorFunc);
let targets = [];
const symbolKeys = Object.getOwnPropertySymbols(classPropsMetadata);
const stringKeys = Object.keys(classPropsMetadata);
const keys = stringKeys.concat(symbolKeys);
for (const key of keys) {
const targetMetadata = classPropsMetadata[key];
const metadata = formatTargetMetadata(targetMetadata);
const identifier = metadata.targetName || key;
const serviceIdentifier = _getServiceIdentifierForProperty(metadata.inject, metadata.multiInject, key, constructorName);
const target = new target_1.Target(literal_types_1.TargetTypeEnum.ClassProperty, identifier, serviceIdentifier);
target.metadata = targetMetadata;
targets.push(target);
}
const baseConstructor = Object.getPrototypeOf(constructorFunc.prototype).constructor;
if (baseConstructor !== Object) {
const baseTargets = getClassPropsAsTargets(metadataReader, baseConstructor, constructorName);
targets = [
...targets,
...baseTargets
];
}
return targets;
}
function getBaseClassDependencyCount(metadataReader, func) {
const baseConstructor = Object.getPrototypeOf(func.prototype).constructor;
if (baseConstructor !== Object) {
const baseConstructorName = (0, serialization_1.getFunctionName)(baseConstructor);
const targets = getTargets(metadataReader, baseConstructorName, baseConstructor, true);
const metadata = targets.map((t) => t.metadata.filter(m => m.key === METADATA_KEY.UNMANAGED_TAG));
const unmanagedCount = [].concat.apply([], metadata).length;
const dependencyCount = targets.length - unmanagedCount;
if (dependencyCount > 0) {
return dependencyCount;
}
else {
return getBaseClassDependencyCount(metadataReader, baseConstructor);
}
}
else {
return 0;
}
}
exports.getBaseClassDependencyCount = getBaseClassDependencyCount;
function formatTargetMetadata(targetMetadata) {
const targetMetadataMap = {};
targetMetadata.forEach((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]
};
}