64 lines
1.4 KiB
JavaScript
64 lines
1.4 KiB
JavaScript
/**
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* @license Apache-2.0
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*
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* Copyright (c) 2018 The Stdlib Authors.
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*
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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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'use strict';
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// MODULES //
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var isNumber = require( '@stdlib/assert/is-number' ).isPrimitive;
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var ctors = require( './ctors.js' );
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// MAIN //
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/**
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* Revives a JSON-serialized complex number.
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*
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* @param {string} key - key
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* @param {*} value - value
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* @returns {(*|Complex)} value or complex number
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*
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* @example
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* var parseJSON = require( '@stdlib/utils/parse-json' );
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*
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* var str = '{"type":"Complex128","re":5,"im":3}';
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*
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* var z = parseJSON( str, reviver );
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* // returns <Complex128>
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*/
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function reviver( key, value ) {
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var ctor;
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if (
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value &&
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value.type &&
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isNumber( value.re ) &&
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isNumber( value.im )
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) {
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ctor = ctors[ value.type ];
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if ( ctor ) {
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return new ctor( value.re, value.im );
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}
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}
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return value;
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}
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// EXPORTS //
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module.exports = reviver;
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