mirror of https://github.com/denoland/deno.git
40 lines
1.2 KiB
TypeScript
40 lines
1.2 KiB
TypeScript
// Ported from js-yaml v3.13.1:
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// https://github.com/nodeca/js-yaml/commit/665aadda42349dcae869f12040d9b10ef18d12da
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// Copyright 2011-2015 by Vitaly Puzrin. All rights reserved. MIT license.
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// Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.
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import { Type } from "../type.ts";
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import { isBoolean } from "../utils.ts";
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function resolveYamlBoolean(data: string): boolean {
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const max = data.length;
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return (
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(max === 4 && (data === "true" || data === "True" || data === "TRUE")) ||
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(max === 5 && (data === "false" || data === "False" || data === "FALSE"))
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);
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}
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function constructYamlBoolean(data: string): boolean {
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return data === "true" || data === "True" || data === "TRUE";
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}
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export const bool = new Type("tag:yaml.org,2002:bool", {
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construct: constructYamlBoolean,
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defaultStyle: "lowercase",
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kind: "scalar",
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predicate: isBoolean,
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represent: {
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lowercase(object: boolean): string {
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return object ? "true" : "false";
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},
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uppercase(object: boolean): string {
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return object ? "TRUE" : "FALSE";
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},
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camelcase(object: boolean): string {
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return object ? "True" : "False";
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},
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},
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resolve: resolveYamlBoolean,
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});
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