"use strict";
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/**
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* @license
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* Copyright 2018 Google LLC. All Rights Reserved.
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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* =============================================================================
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*/
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var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
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return new (P || (P = Promise))(function (resolve, reject) {
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function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
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function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
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function step(result) { result.done ? resolve(result.value) : new P(function (resolve) { resolve(result.value); }).then(fulfilled, rejected); }
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step((generator = generator.apply(thisArg, _arguments || [])).next());
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});
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};
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var __generator = (this && this.__generator) || function (thisArg, body) {
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var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;
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return g = { next: verb(0), "throw": verb(1), "return": verb(2) }, typeof Symbol === "function" && (g[Symbol.iterator] = function() { return this; }), g;
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function verb(n) { return function (v) { return step([n, v]); }; }
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function step(op) {
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if (f) throw new TypeError("Generator is already executing.");
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while (_) try {
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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;
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if (y = 0, t) op = [op[0] & 2, t.value];
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switch (op[0]) {
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case 0: case 1: t = op; break;
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case 4: _.label++; return { value: op[1], done: false };
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case 5: _.label++; y = op[1]; op = [0]; continue;
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case 7: op = _.ops.pop(); _.trys.pop(); continue;
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default:
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if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }
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if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }
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if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }
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if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }
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if (t[2]) _.ops.pop();
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_.trys.pop(); continue;
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}
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op = body.call(thisArg, _);
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} catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }
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if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };
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}
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};
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Object.defineProperty(exports, "__esModule", { value: true });
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var PassthroughLoader = /** @class */ (function () {
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function PassthroughLoader(modelArtifacts) {
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this.modelArtifacts = modelArtifacts;
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}
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PassthroughLoader.prototype.load = function () {
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return __awaiter(this, void 0, void 0, function () {
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return __generator(this, function (_a) {
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return [2 /*return*/, this.modelArtifacts];
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});
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});
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};
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return PassthroughLoader;
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}());
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var PassthroughSaver = /** @class */ (function () {
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function PassthroughSaver(saveHandler) {
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this.saveHandler = saveHandler;
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}
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PassthroughSaver.prototype.save = function (modelArtifacts) {
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return __awaiter(this, void 0, void 0, function () {
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return __generator(this, function (_a) {
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return [2 /*return*/, this.saveHandler(modelArtifacts)];
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});
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});
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};
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return PassthroughSaver;
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}());
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/**
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* Creates an IOHandler that loads model artifacts from memory.
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*
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* When used in conjunction with `tf.loadLayersModel`, an instance of
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* `tf.LayersModel` (Keras-style) can be constructed from the loaded artifacts.
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*
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* ```js
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* const model = await tf.loadLayersModel(tf.io.fromMemory(
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* modelTopology, weightSpecs, weightData));
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* ```
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*
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* @param modelArtifacts a object containing model topology (i.e., parsed from
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* the JSON format).
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* @param weightSpecs An array of `WeightsManifestEntry` objects describing the
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* names, shapes, types, and quantization of the weight data.
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* @param weightData A single `ArrayBuffer` containing the weight data,
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* concatenated in the order described by the weightSpecs.
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* @param trainingConfig Model training configuration. Optional.
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*
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* @returns A passthrough `IOHandler` that simply loads the provided data.
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*/
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function fromMemory(modelArtifacts, weightSpecs, weightData, trainingConfig) {
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if (arguments.length === 1) {
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var isModelArtifacts = modelArtifacts.modelTopology != null ||
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modelArtifacts.weightSpecs != null;
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if (isModelArtifacts) {
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return new PassthroughLoader(modelArtifacts);
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}
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else {
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// Legacy support: with only modelTopology.
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// TODO(cais): Remove this deprecated API.
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console.warn('Please call tf.io.fromMemory() with only one argument. ' +
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'The argument should be of type ModelArtifacts. ' +
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'The multi-argument signature of tf.io.fromMemory() has been ' +
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'deprecated and will be removed in a future release.');
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return new PassthroughLoader({ modelTopology: modelArtifacts });
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}
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}
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else {
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// Legacy support.
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// TODO(cais): Remove this deprecated API.
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console.warn('Please call tf.io.fromMemory() with only one argument. ' +
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'The argument should be of type ModelArtifacts. ' +
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'The multi-argument signature of tf.io.fromMemory() has been ' +
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'deprecated and will be removed in a future release.');
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return new PassthroughLoader({
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modelTopology: modelArtifacts,
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weightSpecs: weightSpecs,
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weightData: weightData,
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trainingConfig: trainingConfig
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});
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}
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}
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exports.fromMemory = fromMemory;
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/**
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* Creates an IOHandler that passes saved model artifacts to a callback.
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*
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* ```js
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* function handleSave(artifacts) {
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* // ... do something with the artifacts ...
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* return {modelArtifactsInfo: {...}, ...};
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* }
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*
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* const saveResult = model.save(tf.io.withSaveHandler(handleSave));
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* ```
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*
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* @param saveHandler A function that accepts a `ModelArtifacts` and returns a
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* `SaveResult`.
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*/
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function withSaveHandler(saveHandler) {
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return new PassthroughSaver(saveHandler);
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}
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exports.withSaveHandler = withSaveHandler;
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//# sourceMappingURL=passthrough.js.map
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