adapta
Version:
A simple Typescript library for adapting data from one schema to another
304 lines • 12.4 kB
JavaScript
"use strict";
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
return new (P || (P = Promise))(function (resolve, reject) {
function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
step((generator = generator.apply(thisArg, _arguments || [])).next());
});
};
var __generator = (this && this.__generator) || function (thisArg, body) {
var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;
return g = { next: verb(0), "throw": verb(1), "return": verb(2) }, typeof Symbol === "function" && (g[Symbol.iterator] = function() { return this; }), g;
function verb(n) { return function (v) { return step([n, v]); }; }
function step(op) {
if (f) throw new TypeError("Generator is already executing.");
while (_) try {
if (f = 1, y && (t = op[0] & 2 ? y["return"] : op[0] ? y["throw"] || ((t = y["return"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;
if (y = 0, t) op = [op[0] & 2, t.value];
switch (op[0]) {
case 0: case 1: t = op; break;
case 4: _.label++; return { value: op[1], done: false };
case 5: _.label++; y = op[1]; op = [0]; continue;
case 7: op = _.ops.pop(); _.trys.pop(); continue;
default:
if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }
if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }
if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }
if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }
if (t[2]) _.ops.pop();
_.trys.pop(); continue;
}
op = body.call(thisArg, _);
} catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }
if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };
}
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.Adapter = exports.Schema = exports.output = exports.input = exports.map = exports.type = exports.Type = exports.Map = exports.Transform = exports.setPath = exports.pathContainer = exports.access = exports.ETransformDirection = void 0;
var ETransformDirection;
(function (ETransformDirection) {
ETransformDirection[ETransformDirection["INPUT"] = 0] = "INPUT";
ETransformDirection[ETransformDirection["OUTPUT"] = 1] = "OUTPUT";
})(ETransformDirection = exports.ETransformDirection || (exports.ETransformDirection = {}));
function access(data, accessor) {
if ([null, undefined].indexOf(data) > -1)
return null;
var parts = accessor.split('.');
var current = parts.shift();
var value = current === undefined ? null : data[current];
if (parts.length > 0)
return typeof value === 'object' ? access(value, parts.join('.')) : null;
return value;
}
exports.access = access;
function pathContainer(data, accessor) {
if ([null, undefined].indexOf(data) > -1)
data = {};
var parts = accessor.split('.');
var current = parts.shift();
if (current === undefined)
return null;
if (data[current] === undefined)
data[current] = {};
if (parts.length === 1)
return data[current];
return pathContainer(data[current], parts.join('.'));
}
exports.pathContainer = pathContainer;
function setPath(data, accessor, value) {
if ([null, undefined].indexOf(data) > -1)
return;
var parts = accessor.split('.');
var current = parts.shift();
if (current === undefined)
return;
if (parts.length > 0 && data[current] === undefined)
data[current] = {};
if (parts.length === 0) {
data[current] = value;
return;
}
setPath(data[current], parts.join('.'), value);
}
exports.setPath = setPath;
var Transform = /** @class */ (function () {
function Transform(direction, func, schema, from, to) {
this.direction = direction;
this.func = func;
this.schema = schema;
this.from = from instanceof Array ? from : [from];
this.to = to instanceof Array ? to : [to];
}
return Transform;
}());
exports.Transform = Transform;
var Map = /** @class */ (function () {
function Map(key, schema, accessor) {
this.key = key;
this.schema = schema;
this.accessor = accessor;
}
return Map;
}());
exports.Map = Map;
var Type = /** @class */ (function () {
function Type(value) {
this.value = this.cast(value);
}
Type.prototype.cast = function (value) {
return value;
};
return Type;
}());
exports.Type = Type;
function type(t) {
return function (target, key) {
target.constructor.addType(key, t);
};
}
exports.type = type;
function map(schema, accessor) {
return function (target, key) {
target.constructor.addMap(new Map(key, schema, accessor));
};
}
exports.map = map;
function input(schema, from, to) {
return function (target, func) {
target.constructor.addTransform(new Transform(ETransformDirection.INPUT, func, schema, from, to));
};
}
exports.input = input;
function output(schema, from, to) {
return function (target, func) {
target.constructor.addTransform(new Transform(ETransformDirection.OUTPUT, func, schema, from, to));
};
}
exports.output = output;
var Schema = /** @class */ (function () {
function Schema() {
this.accessors = [];
this.transforms = [];
this._maps = [];
}
Schema.prototype.addAccessor = function (accessor) {
if (this.accessors.indexOf(accessor) === -1)
this.accessors.push(accessor);
};
Schema.prototype.addTransform = function (transform) {
this.transforms.push(transform);
};
Schema.prototype.addMap = function (map) {
this._maps.push(map);
this.addAccessor(map.accessor);
};
Schema.prototype.getTransforms = function (direction) {
return this.transforms.filter(function (transform) { return transform.direction === direction; });
};
Object.defineProperty(Schema.prototype, "inputs", {
get: function () {
return this.getTransforms(ETransformDirection.INPUT);
},
enumerable: false,
configurable: true
});
Object.defineProperty(Schema.prototype, "outputs", {
get: function () {
return this.getTransforms(ETransformDirection.OUTPUT);
},
enumerable: false,
configurable: true
});
Object.defineProperty(Schema.prototype, "maps", {
get: function () {
return this._maps;
},
enumerable: false,
configurable: true
});
return Schema;
}());
exports.Schema = Schema;
var Adapter = /** @class */ (function () {
function Adapter() {
}
Adapter.prototype.schema = function (schema) {
return this.constructor.schemas ? this.constructor.schemas[schema] : null;
};
Adapter.prototype.type = function (t) {
return this.constructor.types ? this.constructor.types[t] : null;
};
Adapter.prototype.from = function (schema, inputData) {
return __awaiter(this, void 0, void 0, function () {
var _schema, _i, _a, map_1, t, _b, _c, input_1, inputValues, _d, _e, t, out, i;
var _f;
return __generator(this, function (_g) {
switch (_g.label) {
case 0:
_schema = this.schema(schema);
if (!_schema)
return [2 /*return*/];
for (_i = 0, _a = _schema.maps; _i < _a.length; _i++) {
map_1 = _a[_i];
t = this.type(map_1.key) || Type;
this[map_1.key] = new t(access(inputData, map_1.accessor)).value;
}
_b = 0, _c = _schema.inputs;
_g.label = 1;
case 1:
if (!(_b < _c.length)) return [3 /*break*/, 4];
input_1 = _c[_b];
inputValues = [];
for (_d = 0, _e = input_1.from; _d < _e.length; _d++) {
t = _e[_d];
inputValues.push(access(inputData, t));
}
return [4 /*yield*/, (_f = this)[input_1.func].apply(_f, inputValues)];
case 2:
out = _g.sent();
if (input_1.to.length === 1) {
this[input_1.to[0]] = out;
}
else {
for (i = 0; i < input_1.to.length; i++) {
this[input_1.to[i]] = out[i];
}
}
_g.label = 3;
case 3:
_b++;
return [3 /*break*/, 1];
case 4: return [2 /*return*/];
}
});
});
};
Adapter.prototype.to = function (schema) {
return __awaiter(this, void 0, void 0, function () {
var _schema, data, _i, _a, map_2, _b, _c, output_1, outputValues, _d, _e, t, out, i;
var _f;
return __generator(this, function (_g) {
switch (_g.label) {
case 0:
_schema = this.schema(schema);
data = {};
if (!_schema)
return [2 /*return*/, data];
for (_i = 0, _a = _schema.maps; _i < _a.length; _i++) {
map_2 = _a[_i];
setPath(data, map_2.accessor, access(this, map_2.key));
}
_b = 0, _c = _schema.outputs;
_g.label = 1;
case 1:
if (!(_b < _c.length)) return [3 /*break*/, 4];
output_1 = _c[_b];
outputValues = [];
for (_d = 0, _e = output_1.from; _d < _e.length; _d++) {
t = _e[_d];
outputValues.push(access(this, t));
}
return [4 /*yield*/, (_f = this)[output_1.func].apply(_f, outputValues)];
case 2:
out = _g.sent();
if (output_1.to.length === 1) {
setPath(data, output_1.to[0], out);
}
else {
for (i = 0; i < output_1.to.length; i++) {
setPath(data, output_1.to[i], out[i]);
}
}
_g.label = 3;
case 3:
_b++;
return [3 /*break*/, 1];
case 4: return [2 /*return*/, data];
}
});
});
};
Adapter.addTransform = function (transform) {
this.schema(transform.schema).addTransform(transform);
};
Adapter.addMap = function (map) {
this.schema(map.schema).addMap(map);
};
Adapter.addType = function (prop, t) {
if (!this.types)
this.types = {};
this.types[prop] = t;
};
Adapter.schema = function (schema) {
if (!this.schemas)
this.schemas = {};
if (!this.schemas[schema])
this.schemas[schema] = new Schema();
return this.schemas[schema];
};
return Adapter;
}());
exports.Adapter = Adapter;
//# sourceMappingURL=Adapter.js.map