fast-check
Version:
Property based testing framework for JavaScript (like QuickCheck)
42 lines (41 loc) • 1.82 kB
JavaScript
import { mapToConstant } from '../mapToConstant.js';
import { asciiAlphabetRanges, autonomousDecomposableGraphemeRanges, autonomousGraphemeRanges, fullAlphabetRanges, } from './data/GraphemeRanges.js';
import { convertGraphemeRangeToMapToConstantEntry, intersectGraphemeRanges } from './helpers/GraphemeRangesHelpers.js';
const registeredStringUnitInstancesMap = Object.create(null);
function getAlphabetRanges(alphabet) {
switch (alphabet) {
case 'full':
return fullAlphabetRanges;
case 'ascii':
return asciiAlphabetRanges;
}
}
function getOrCreateStringUnitInstance(type, alphabet) {
const key = `${type}:${alphabet}`;
const registered = registeredStringUnitInstancesMap[key];
if (registered !== undefined) {
return registered;
}
const alphabetRanges = getAlphabetRanges(alphabet);
const ranges = type === 'binary' ? alphabetRanges : intersectGraphemeRanges(alphabetRanges, autonomousGraphemeRanges);
const entries = [];
for (const range of ranges) {
entries.push(convertGraphemeRangeToMapToConstantEntry(range));
}
if (type === 'grapheme') {
const decomposedRanges = intersectGraphemeRanges(alphabetRanges, autonomousDecomposableGraphemeRanges);
for (const range of decomposedRanges) {
const rawEntry = convertGraphemeRangeToMapToConstantEntry(range);
entries.push({
num: rawEntry.num,
build: (idInGroup) => rawEntry.build(idInGroup).normalize('NFD'),
});
}
}
const stringUnitInstance = mapToConstant(...entries);
registeredStringUnitInstancesMap[key] = stringUnitInstance;
return stringUnitInstance;
}
export function stringUnit(type, alphabet) {
return getOrCreateStringUnitInstance(type, alphabet);
}