stylus/js/meta-parser.js
2022-03-31 14:00:12 +03:00

68 lines
1.7 KiB
JavaScript

'use strict';
/* exported metaParser */
const metaParser = (() => {
require(['/vendor/usercss-meta/usercss-meta']); /* global usercssMeta */
const {createParser, ParseError} = usercssMeta;
const PREPROCESSORS = new Set(['default', 'uso', 'stylus', 'less']);
const options = {
validateKey: {
preprocessor: state => {
if (!PREPROCESSORS.has(state.value)) {
throw new ParseError({
code: 'unknownPreprocessor',
args: [state.value],
index: state.valueIndex,
});
}
},
},
validateVar: {
select: state => {
if (state.varResult.options.every(o => o.name !== state.value)) {
throw new ParseError({
code: 'invalidSelectValueMismatch',
index: state.valueIndex,
});
}
},
color: state => {
require(['/js/color/color-converter']); /* global colorConverter */
const color = colorConverter.parse(state.value);
if (!color) {
throw new ParseError({
code: 'invalidColor',
args: [state.value],
index: state.valueIndex,
});
}
state.value = colorConverter.format(color);
},
},
};
const parser = createParser(options);
const looseParser = createParser(Object.assign({}, options, {
allowErrors: true,
unknownKey: 'throw',
}));
return {
lint: looseParser.parse,
parse: parser.parse,
nullifyInvalidVars(vars) {
for (const va of Object.values(vars)) {
if (va.value !== null) {
try {
parser.validateVar(va);
} catch (err) {
va.value = null;
}
}
}
return vars;
},
};
})();