/
omap.ts
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/
omap.ts
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// Ported from js-yaml v3.13.1:
// https://github.com/nodeca/js-yaml/commit/665aadda42349dcae869f12040d9b10ef18d12da
// Copyright 2011-2015 by Vitaly Puzrin. All rights reserved. MIT license.
// Copyright 2018-2022 the Deno authors. All rights reserved. MIT license.
import { Type } from "../type.ts";
import type { Any } from "../utils.ts";
const { hasOwn } = Object;
const _toString = Object.prototype.toString;
function resolveYamlOmap(data: Any): boolean {
const objectKeys: string[] = [];
let pairKey = "";
let pairHasKey = false;
for (const pair of data) {
pairHasKey = false;
if (_toString.call(pair) !== "[object Object]") return false;
for (pairKey in pair) {
if (hasOwn(pair, pairKey)) {
if (!pairHasKey) pairHasKey = true;
else return false;
}
}
if (!pairHasKey) return false;
if (objectKeys.indexOf(pairKey) === -1) objectKeys.push(pairKey);
else return false;
}
return true;
}
function constructYamlOmap(data: Any): Any {
return data !== null ? data : [];
}
export const omap = new Type("tag:yaml.org,2002:omap", {
construct: constructYamlOmap,
kind: "sequence",
resolve: resolveYamlOmap,
});