46 lines
2.1 KiB
JavaScript
46 lines
2.1 KiB
JavaScript
"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.stringUnit = stringUnit;
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const globals_1 = require("../../utils/globals");
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const mapToConstant_1 = require("../mapToConstant");
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const GraphemeRanges_1 = require("./data/GraphemeRanges");
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const GraphemeRangesHelpers_1 = require("./helpers/GraphemeRangesHelpers");
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const registeredStringUnitInstancesMap = Object.create(null);
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function getAlphabetRanges(alphabet) {
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switch (alphabet) {
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case 'full':
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return GraphemeRanges_1.fullAlphabetRanges;
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case 'ascii':
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return GraphemeRanges_1.asciiAlphabetRanges;
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}
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}
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function getOrCreateStringUnitInstance(type, alphabet) {
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const key = `${type}:${alphabet}`;
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const registered = registeredStringUnitInstancesMap[key];
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if (registered !== undefined) {
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return registered;
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}
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const alphabetRanges = getAlphabetRanges(alphabet);
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const ranges = type === 'binary' ? alphabetRanges : (0, GraphemeRangesHelpers_1.intersectGraphemeRanges)(alphabetRanges, GraphemeRanges_1.autonomousGraphemeRanges);
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const entries = [];
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for (const range of ranges) {
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(0, globals_1.safePush)(entries, (0, GraphemeRangesHelpers_1.convertGraphemeRangeToMapToConstantEntry)(range));
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}
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if (type === 'grapheme') {
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const decomposedRanges = (0, GraphemeRangesHelpers_1.intersectGraphemeRanges)(alphabetRanges, GraphemeRanges_1.autonomousDecomposableGraphemeRanges);
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for (const range of decomposedRanges) {
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const rawEntry = (0, GraphemeRangesHelpers_1.convertGraphemeRangeToMapToConstantEntry)(range);
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(0, globals_1.safePush)(entries, {
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num: rawEntry.num,
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build: (idInGroup) => (0, globals_1.safeNormalize)(rawEntry.build(idInGroup), 'NFD'),
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});
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}
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}
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const stringUnitInstance = (0, mapToConstant_1.mapToConstant)(...entries);
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registeredStringUnitInstancesMap[key] = stringUnitInstance;
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return stringUnitInstance;
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}
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function stringUnit(type, alphabet) {
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return getOrCreateStringUnitInstance(type, alphabet);
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}
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