calcium-js/dist/api/namespace.js

Calcium runtime on JavaScript

export class Namespace {
    constructor(parent) {
        this.parent = parent;
        this.dict = new Map();
    }
    lookUp(key) {
        var _a;
        let value = this.dict.get(key);
        if (value !== undefined) {
            return value;
        }
        else {
            value = (_a = this.parent) === null || _a === void 0 ? void 0 : _a.lookUp(key);
            if (value === undefined) {
                if (key === 'document') {
                    // NOT allow to access DOM
                    return undefined;
                }
                else {
                    return (window || global)[key];
                }
            }
            else {
                return value;
            }
        }
    }
    register(key, value) {
        this.dict.set(key, value);
    }
    /**
     * the parent scope of a function or a method.
     * When this namespace is not a class scope, then returns this.
     */
    get nestingScope() {
        return this.parent;
    }
}
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