"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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Object.defineProperty(exports, "__esModule", { value: true });
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var tensor_1 = require("./tensor");
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var types_1 = require("./types");
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var util_1 = require("./util");
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function makeTypesMatch(a, b) {
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if (a.dtype === b.dtype) {
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return [a, b];
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}
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var dtype = types_1.upcastType(a.dtype, b.dtype);
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return [a.cast(dtype), b.cast(dtype)];
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}
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exports.makeTypesMatch = makeTypesMatch;
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function assertTypesMatch(a, b) {
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util_1.assert(a.dtype === b.dtype, function () { return "The dtypes of the first(" + a.dtype + ") and" +
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(" second(" + b.dtype + ") input must match"); });
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}
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exports.assertTypesMatch = assertTypesMatch;
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function isTensorInList(tensor, tensorList) {
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return tensorList.some(function (x) { return x.id === tensor.id; });
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}
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exports.isTensorInList = isTensorInList;
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/**
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* Extracts any `Tensor`s found within the provided object.
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*
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* @param container an object that may be a `Tensor` or may directly contain
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* `Tensor`s, such as a `Tensor[]` or `{key: Tensor, ...}`. In general it
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* is safe to pass any object here, except that `Promise`s are not
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* supported.
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* @returns An array of `Tensors` found within the passed object. If the
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* argument is simply a `Tensor', a list containing that `Tensor` is
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* returned. If the object is not a `Tensor` or does not
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* contain `Tensors`, an empty list is returned.
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*/
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function getTensorsInContainer(result) {
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var list = [];
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var seen = new Set();
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walkTensorContainer(result, list, seen);
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return list;
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}
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exports.getTensorsInContainer = getTensorsInContainer;
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function walkTensorContainer(container, list, seen) {
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if (container == null) {
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return;
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}
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if (container instanceof tensor_1.Tensor) {
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list.push(container);
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return;
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}
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if (!isIterable(container)) {
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return;
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}
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// Iteration over keys works also for arrays.
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var iterable = container;
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for (var k in iterable) {
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var val = iterable[k];
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if (!seen.has(val)) {
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seen.add(val);
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walkTensorContainer(val, list, seen);
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}
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}
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}
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// tslint:disable-next-line:no-any
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function isIterable(obj) {
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return Array.isArray(obj) || typeof obj === 'object';
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}
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//# sourceMappingURL=tensor_util.js.map
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