56 lines
2.2 KiB
JavaScript
56 lines
2.2 KiB
JavaScript
"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.convertGraphemeRangeToMapToConstantEntry = convertGraphemeRangeToMapToConstantEntry;
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exports.intersectGraphemeRanges = intersectGraphemeRanges;
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const globals_1 = require("../../../utils/globals");
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const safeStringFromCodePoint = String.fromCodePoint;
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const safeMathMin = Math.min;
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const safeMathMax = Math.max;
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function convertGraphemeRangeToMapToConstantEntry(range) {
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if (range.length === 1) {
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const codePointString = safeStringFromCodePoint(range[0]);
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return { num: 1, build: () => codePointString };
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}
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const rangeStart = range[0];
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return { num: range[1] - range[0] + 1, build: (idInGroup) => safeStringFromCodePoint(rangeStart + idInGroup) };
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}
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function intersectGraphemeRanges(rangesA, rangesB) {
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const mergedRanges = [];
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let cursorA = 0;
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let cursorB = 0;
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while (cursorA < rangesA.length && cursorB < rangesB.length) {
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const rangeA = rangesA[cursorA];
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const rangeAMin = rangeA[0];
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const rangeAMax = rangeA.length === 1 ? rangeA[0] : rangeA[1];
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const rangeB = rangesB[cursorB];
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const rangeBMin = rangeB[0];
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const rangeBMax = rangeB.length === 1 ? rangeB[0] : rangeB[1];
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if (rangeAMax < rangeBMin) {
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cursorA += 1;
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}
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else if (rangeBMax < rangeAMin) {
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cursorB += 1;
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}
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else {
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let min = safeMathMax(rangeAMin, rangeBMin);
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const max = safeMathMin(rangeAMax, rangeBMax);
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if (mergedRanges.length >= 1) {
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const lastMergedRange = mergedRanges[mergedRanges.length - 1];
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const lastMergedRangeMax = lastMergedRange.length === 1 ? lastMergedRange[0] : lastMergedRange[1];
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if (lastMergedRangeMax + 1 === min) {
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min = lastMergedRange[0];
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(0, globals_1.safePop)(mergedRanges);
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}
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}
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(0, globals_1.safePush)(mergedRanges, min === max ? [min] : [min, max]);
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if (rangeAMax <= max) {
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cursorA += 1;
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}
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if (rangeBMax <= max) {
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cursorB += 1;
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}
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}
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}
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return mergedRanges;
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}
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