79 lines
1.9 KiB
JavaScript
79 lines
1.9 KiB
JavaScript
/* global usercssMeta colorConverter */
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/* exported metaParser */
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'use strict';
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const metaParser = (() => {
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const {createParser, ParseError} = usercssMeta;
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const PREPROCESSORS = new Set(['default', 'uso', 'stylus', 'less']);
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const options = {
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validateKey: {
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preprocessor: state => {
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if (!PREPROCESSORS.has(state.value)) {
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throw new ParseError({
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code: 'unknownPreprocessor',
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args: [state.value],
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index: state.valueIndex
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});
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}
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}
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},
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validateVar: {
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select: state => {
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if (state.varResult.options.every(o => o.name !== state.value)) {
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throw new ParseError({
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code: 'invalidSelectValueMismatch',
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index: state.valueIndex
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});
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}
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},
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color: state => {
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const color = colorConverter.parse(state.value);
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if (!color) {
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throw new ParseError({
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code: 'invalidColor',
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args: [state.value],
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index: state.valueIndex
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});
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}
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state.value = colorConverter.format(color, 'rgb');
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}
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}
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};
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const parser = createParser(options);
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const looseParser = createParser(Object.assign({}, options, {allowErrors: true, unknownKey: 'throw'}));
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return {
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parse,
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lint,
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nullifyInvalidVars
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};
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function parse(text, indexOffset) {
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try {
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return parser.parse(text);
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} catch (err) {
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if (typeof err.index === 'number') {
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err.index += indexOffset;
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}
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throw err;
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}
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}
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function lint(text) {
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return looseParser.parse(text);
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}
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function nullifyInvalidVars(vars) {
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for (const va of Object.values(vars)) {
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if (va.value === null) {
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continue;
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}
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try {
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parser.validateVar(va);
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} catch (err) {
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va.value = null;
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}
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}
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return vars;
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}
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})();
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