typir/lib/services/kind-registry.js

General purpose type checking library

/******************************************************************************
 * Copyright 2024 TypeFox GmbH
 * This program and the accompanying materials are made available under the
 * terms of the MIT License, which is available in the project root.
 ******************************************************************************/
export class DefaultKindRegistry {
    constructor(services) {
        this.kinds = new Map(); // name of kind => kind (for an easier look-up)
        this.services = services;
    }
    register(kind) {
        const key = kind.$name;
        if (this.kinds.has(key)) {
            if (this.kinds.get(key) === kind) {
                // that is OK
            }
            else {
                throw new Error(`duplicate kind named '${key}'`);
            }
        }
        else {
            this.kinds.set(key, kind);
        }
    }
    get($name) {
        return this.kinds.get($name);
    }
    getOrCreateKind($name, factory) {
        const existing = this.get($name);
        if (existing) {
            return existing;
        }
        return factory(this.services);
    }
}
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