48 lines
1.4 KiB
JavaScript
48 lines
1.4 KiB
JavaScript
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export default function buildMatchFn(args) {
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return function (string) {
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var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
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var width = options.width;
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var matchPattern = width && args.matchPatterns[width] || args.matchPatterns[args.defaultMatchWidth];
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var matchResult = string.match(matchPattern);
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if (!matchResult) {
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return null;
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}
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var matchedString = matchResult[0];
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var parsePatterns = width && args.parsePatterns[width] || args.parsePatterns[args.defaultParseWidth];
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var key = Array.isArray(parsePatterns) ? findIndex(parsePatterns, function (pattern) {
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return pattern.test(matchedString);
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}) : findKey(parsePatterns, function (pattern) {
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return pattern.test(matchedString);
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});
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var value;
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value = args.valueCallback ? args.valueCallback(key) : key;
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value = options.valueCallback ? options.valueCallback(value) : value;
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var rest = string.slice(matchedString.length);
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return {
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value: value,
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rest: rest
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};
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};
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}
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function findKey(object, predicate) {
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for (var key in object) {
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if (object.hasOwnProperty(key) && predicate(object[key])) {
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return key;
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}
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}
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return undefined;
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}
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function findIndex(array, predicate) {
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for (var key = 0; key < array.length; key++) {
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if (predicate(array[key])) {
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return key;
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}
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}
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return undefined;
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}
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