/**
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* @license
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* Copyright 2017 Google Inc. 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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import * as util from '../util';
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export function assertParamsConsistent(shapes: number[][], axis: number) {
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const rank = shapes[0].length;
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shapes.forEach((shape, i) => {
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util.assert(
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shape.length === rank,
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() =>
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`Error in concat${rank}D: rank of tensors[${i}] must be the same ` +
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`as the rank of the rest (${rank})`);
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});
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util.assert(
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axis >= 0 && axis < rank,
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() => `Error in concat${rank}D: axis must be between 0 and ${rank - 1}.`);
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const firstShape = shapes[0];
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shapes.forEach((shape, i) => {
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for (let r = 0; r < rank; r++) {
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util.assert(
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(r === axis) || (shape[r] === firstShape[r]),
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() => `Error in concat${rank}D: Shape of tensors[${i}] (${shape}) ` +
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`does not match the shape of the rest (${firstShape}) ` +
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`along the non-concatenated axis ${i}.`);
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}
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});
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}
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export function computeOutShape(shapes: number[][], axis: number): number[] {
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const outputShape = shapes[0].slice();
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for (let i = 1; i < shapes.length; i++) {
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outputShape[axis] += shapes[i][axis];
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}
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return outputShape;
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}
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