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Vim-Vixen/src/background/usecases/parsers.ts
2019-10-06 12:58:59 +00:00

36 lines
934 B
TypeScript

import Properties from '../../shared/settings/Properties';
const mustNumber = (v: any): number => {
let num = Number(v);
if (isNaN(num)) {
throw new Error('Not number: ' + v);
}
return num;
};
const parseSetOption = (
args: string,
): any[] => {
let [key, value]: any[] = args.split('=');
if (value === undefined) {
value = !key.startsWith('no');
key = value ? key : key.slice(2);
}
let def = Properties.def(key);
if (!def) {
throw new Error('Unknown property: ' + key);
}
if (def.type === 'boolean' && typeof value !== 'boolean' ||
def.type !== 'boolean' && typeof value === 'boolean') {
throw new Error('Invalid argument: ' + args);
}
switch (def.type) {
case 'string': return [key, value];
case 'number': return [key, mustNumber(value)];
case 'boolean': return [key, value];
}
throw new Error('Unknown property type: ' + def.type);
};
export { parseSetOption };