iframe-proxy | Sunbelt Computer Software

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import { SparseVector } from './sparse-vector.js';

import { vectorFromSql, sparsevecFromSql, vectorToSql, sparsevecToSql } from './utils.js';

/**

* @param {?string} value

* @returns {number[] | SparseVector | null}

function fromSql(value) {

if (value === null) {

return null;

} else if (value[0] == '[') {

return vectorFromSql(value);

} else if (value[0] == '{') {

return sparsevecFromSql(value);

} else {

throw new Error('invalid text representation');

}

/**

* @param {number[] | SparseVector | null} value

* @returns {?string}

function toSql(value) {

if (value === null) {

return null;

} else if (Array.isArray(value)) {

return vectorToSql(value);

} else if (value instanceof SparseVector) {

return sparsevecToSql(value);

} else {

throw new Error('expected array or sparse vector');

}

export { fromSql, toSql, SparseVector };

export default { fromSql, toSql };

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