/
bool.ts
39 lines (34 loc) · 1.18 KB
/
bool.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 { isBoolean } from "../utils.ts";
function resolveYamlBoolean(data: string): boolean {
const max = data.length;
return (
(max === 4 && (data === "true" || data === "True" || data === "TRUE")) ||
(max === 5 && (data === "false" || data === "False" || data === "FALSE"))
);
}
function constructYamlBoolean(data: string): boolean {
return data === "true" || data === "True" || data === "TRUE";
}
export const bool = new Type("tag:yaml.org,2002:bool", {
construct: constructYamlBoolean,
defaultStyle: "lowercase",
kind: "scalar",
predicate: isBoolean,
represent: {
lowercase(object: boolean): string {
return object ? "true" : "false";
},
uppercase(object: boolean): string {
return object ? "TRUE" : "FALSE";
},
camelcase(object: boolean): string {
return object ? "True" : "False";
},
},
resolve: resolveYamlBoolean,
});