atombeak/dist/Operation/FlatMappedOperation.js

Create asynchronous atomic functions!

"use strict";
var __extends = (this && this.__extends) || (function () {
    var extendStatics = function (d, b) {
        extendStatics = Object.setPrototypeOf ||
            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
            function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };
        return extendStatics(d, b);
    }
    return function (d, b) {
        extendStatics(d, b);
        function __() { this.constructor = d; }
        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
    };
})();
Object.defineProperty(exports, "__esModule", { value: true });
var internal_1 = require("./internal");
var Result_1 = require("../Result");
var Trampoline_1 = require("../Trampoline");
var FlatMappedOperation = /** @class */ (function (_super) {
    __extends(FlatMappedOperation, _super);
    function FlatMappedOperation(operation, fn) {
        var _this = _super.call(this) || this;
        _this.operation = operation;
        _this.fn = fn;
        return _this;
    }
    FlatMappedOperation.prototype.execute = function (log) {
        var _this = this;
        var executed = this.operation.execute(log);
        if (executed.type === Trampoline_1.ITER) {
            return Trampoline_1.iter(function () {
                return executed.next().then(function (_a) {
                    var operation = _a[0], log = _a[1];
                    var mappedOperation = new FlatMappedOperation(operation, _this.fn);
                    return [mappedOperation, log];
                });
            });
        }
        else if (executed.type === Trampoline_1.DONE) {
            if (executed.value.type === Result_1.RETRY) {
                return Trampoline_1.done(Result_1.retry(executed.value.log));
            }
            else if (executed.value.type === Result_1.GOOD) {
                var operation_1 = this.fn(executed.value.value);
                return Trampoline_1.iter(function () { return Promise.resolve([operation_1, executed.value.log]); });
            }
            else {
                var exhaustive = executed.value;
                throw new Error(exhaustive);
            }
        }
        else {
            var exhaustive = executed;
            throw new Error(exhaustive);
        }
    };
    return FlatMappedOperation;
}(internal_1.AbstractOperation));
exports.FlatMappedOperation = FlatMappedOperation;