"use strict";
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/**
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* @license
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* Copyright 2020 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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exports.rangeConfig = void 0;
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var tfjs_1 = require("@tensorflow/tfjs");
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var nodejs_kernel_backend_1 = require("../nodejs_kernel_backend");
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exports.rangeConfig = {
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kernelName: tfjs_1.Range,
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backendName: 'tensorflow',
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kernelFunc: function (args) {
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var backend = args.backend;
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var _a = args.attrs, start = _a.start, stop = _a.stop, dtype = _a.dtype;
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var step = args.attrs.step;
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// TensorFlow.js specific allowances
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var sameStartStop = start === stop;
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var increasingRangeNegativeStep = start < stop && step < 0;
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var decreasingRangePositiveStep = stop < start && step > 1;
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if (sameStartStop || increasingRangeNegativeStep ||
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decreasingRangePositiveStep) {
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return (0, tfjs_1.zeros)([0], dtype);
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}
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if (stop < start && step === 1) {
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// Auto adjust the step's sign if it hasn't been set
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// (or was set to 1)
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step = -1;
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}
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var opAttrs = [(0, nodejs_kernel_backend_1.createTensorsTypeOpAttr)('Tidx', dtype)];
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var startTensor = (0, tfjs_1.scalar)(start, dtype);
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var stopTensor = (0, tfjs_1.scalar)(stop, dtype);
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var stepTensor = (0, tfjs_1.scalar)(step, dtype);
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var res = backend.executeSingleOutput(tfjs_1.Range, opAttrs, [startTensor, stopTensor, stepTensor]);
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startTensor.dispose();
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stopTensor.dispose();
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stepTensor.dispose();
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return res;
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}
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};
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