/*---------------------------------------------------------------------------------------------
 *  Copyright (c) Microsoft Corporation. All rights reserved.
 *  Licensed under the MIT License. See License.txt in the project root for license information.
 *--------------------------------------------------------------------------------------------*/
var _a;
import { LRUCachedFunction } from './cache.js';
import { Lazy } from './lazy.js';
export function isFalsyOrWhitespace(str) {
    if (!str || typeof str !== 'string') {
        return true;
    }
    return str.trim().length === 0;
}
const _formatRegexp = /{(\d+)}/g;
/**
 * Helper to produce a string with a variable number of arguments. Insert variable segments
 * into the string using the {n} notation where N is the index of the argument following the string.
 * @param value string to which formatting is applied
 * @param args replacements for {n}-entries
 */
export function format(value, ...args) {
    if (args.length === 0) {
        return value;
    }
    return value.replace(_formatRegexp, function (match, group) {
        const idx = parseInt(group, 10);
        return isNaN(idx) || idx < 0 || idx >= args.length ?
            match :
            args[idx];
    });
}
/**
 * Converts HTML characters inside the string to use entities instead. Makes the string safe from
 * being used e.g. in HTMLElement.innerHTML.
 */
export function escape(html) {
    return html.replace(/[<>&]/g, function (match) {
        switch (match) {
            case '<': return '&lt;';
            case '>': return '&gt;';
            case '&': return '&amp;';
            default: return match;
        }
    });
}
/**
 * Escapes regular expression characters in a given string
 */
export function escapeRegExpCharacters(value) {
    return value.replace(/[\\\{\}\*\+\?\|\^\$\.\[\]\(\)]/g, '\\$&');
}
/**
 * Removes all occurrences of needle from the beginning and end of haystack.
 * @param haystack string to trim
 * @param needle the thing to trim (default is a blank)
 */
export function trim(haystack, needle = ' ') {
    const trimmed = ltrim(haystack, needle);
    return rtrim(trimmed, needle);
}
/**
 * Removes all occurrences of needle from the beginning of haystack.
 * @param haystack string to trim
 * @param needle the thing to trim
 */
export function ltrim(haystack, needle) {
    if (!haystack || !needle) {
        return haystack;
    }
    const needleLen = needle.length;
    if (needleLen === 0 || haystack.length === 0) {
        return haystack;
    }
    let offset = 0;
    while (haystack.indexOf(needle, offset) === offset) {
        offset = offset + needleLen;
    }
    return haystack.substring(offset);
}
/**
 * Removes all occurrences of needle from the end of haystack.
 * @param haystack string to trim
 * @param needle the thing to trim
 */
export function rtrim(haystack, needle) {
    if (!haystack || !needle) {
        return haystack;
    }
    const needleLen = needle.length, haystackLen = haystack.length;
    if (needleLen === 0 || haystackLen === 0) {
        return haystack;
    }
    let offset = haystackLen, idx = -1;
    while (true) {
        idx = haystack.lastIndexOf(needle, offset - 1);
        if (idx === -1 || idx + needleLen !== offset) {
            break;
        }
        if (idx === 0) {
            return '';
        }
        offset = idx;
    }
    return haystack.substring(0, offset);
}
export function convertSimple2RegExpPattern(pattern) {
    return pattern.replace(/[\-\\\{\}\+\?\|\^\$\.\,\[\]\(\)\#\s]/g, '\\$&').replace(/[\*]/g, '.*');
}
export function stripWildcards(pattern) {
    return pattern.replace(/\*/g, '');
}
export function createRegExp(searchString, isRegex, options = {}) {
    if (!searchString) {
        throw new Error('Cannot create regex from empty string');
    }
    if (!isRegex) {
        searchString = escapeRegExpCharacters(searchString);
    }
    if (options.wholeWord) {
        if (!/\B/.test(searchString.charAt(0))) {
            searchString = '\\b' + searchString;
        }
        if (!/\B/.test(searchString.charAt(searchString.length - 1))) {
            searchString = searchString + '\\b';
        }
    }
    let modifiers = '';
    if (options.global) {
        modifiers += 'g';
    }
    if (!options.matchCase) {
        modifiers += 'i';
    }
    if (options.multiline) {
        modifiers += 'm';
    }
    if (options.unicode) {
        modifiers += 'u';
    }
    return new RegExp(searchString, modifiers);
}
export function regExpLeadsToEndlessLoop(regexp) {
    // Exit early if it's one of these special cases which are meant to match
    // against an empty string
    if (regexp.source === '^' || regexp.source === '^$' || regexp.source === '$' || regexp.source === '^\\s*$') {
        return false;
    }
    // We check against an empty string. If the regular expression doesn't advance
    // (e.g. ends in an endless loop) it will match an empty string.
    const match = regexp.exec('');
    return !!(match && regexp.lastIndex === 0);
}
export function splitLines(str) {
    return str.split(/\r\n|\r|\n/);
}
/**
 * Returns first index of the string that is not whitespace.
 * If string is empty or contains only whitespaces, returns -1
 */
export function firstNonWhitespaceIndex(str) {
    for (let i = 0, len = str.length; i < len; i++) {
        const chCode = str.charCodeAt(i);
        if (chCode !== 32 /* CharCode.Space */ && chCode !== 9 /* CharCode.Tab */) {
            return i;
        }
    }
    return -1;
}
/**
 * Returns the leading whitespace of the string.
 * If the string contains only whitespaces, returns entire string
 */
export function getLeadingWhitespace(str, start = 0, end = str.length) {
    for (let i = start; i < end; i++) {
        const chCode = str.charCodeAt(i);
        if (chCode !== 32 /* CharCode.Space */ && chCode !== 9 /* CharCode.Tab */) {
            return str.substring(start, i);
        }
    }
    return str.substring(start, end);
}
/**
 * Returns last index of the string that is not whitespace.
 * If string is empty or contains only whitespaces, returns -1
 */
export function lastNonWhitespaceIndex(str, startIndex = str.length - 1) {
    for (let i = startIndex; i >= 0; i--) {
        const chCode = str.charCodeAt(i);
        if (chCode !== 32 /* CharCode.Space */ && chCode !== 9 /* CharCode.Tab */) {
            return i;
        }
    }
    return -1;
}
export function compare(a, b) {
    if (a < b) {
        return -1;
    }
    else if (a > b) {
        return 1;
    }
    else {
        return 0;
    }
}
export function compareSubstring(a, b, aStart = 0, aEnd = a.length, bStart = 0, bEnd = b.length) {
    for (; aStart < aEnd && bStart < bEnd; aStart++, bStart++) {
        const codeA = a.charCodeAt(aStart);
        const codeB = b.charCodeAt(bStart);
        if (codeA < codeB) {
            return -1;
        }
        else if (codeA > codeB) {
            return 1;
        }
    }
    const aLen = aEnd - aStart;
    const bLen = bEnd - bStart;
    if (aLen < bLen) {
        return -1;
    }
    else if (aLen > bLen) {
        return 1;
    }
    return 0;
}
export function compareIgnoreCase(a, b) {
    return compareSubstringIgnoreCase(a, b, 0, a.length, 0, b.length);
}
export function compareSubstringIgnoreCase(a, b, aStart = 0, aEnd = a.length, bStart = 0, bEnd = b.length) {
    for (; aStart < aEnd && bStart < bEnd; aStart++, bStart++) {
        let codeA = a.charCodeAt(aStart);
        let codeB = b.charCodeAt(bStart);
        if (codeA === codeB) {
            // equal
            continue;
        }
        if (codeA >= 128 || codeB >= 128) {
            // not ASCII letters -> fallback to lower-casing strings
            return compareSubstring(a.toLowerCase(), b.toLowerCase(), aStart, aEnd, bStart, bEnd);
        }
        // mapper lower-case ascii letter onto upper-case varinats
        // [97-122] (lower ascii) --> [65-90] (upper ascii)
        if (isLowerAsciiLetter(codeA)) {
            codeA -= 32;
        }
        if (isLowerAsciiLetter(codeB)) {
            codeB -= 32;
        }
        // compare both code points
        const diff = codeA - codeB;
        if (diff === 0) {
            continue;
        }
        return diff;
    }
    const aLen = aEnd - aStart;
    const bLen = bEnd - bStart;
    if (aLen < bLen) {
        return -1;
    }
    else if (aLen > bLen) {
        return 1;
    }
    return 0;
}
export function isAsciiDigit(code) {
    return code >= 48 /* CharCode.Digit0 */ && code <= 57 /* CharCode.Digit9 */;
}
export function isLowerAsciiLetter(code) {
    return code >= 97 /* CharCode.a */ && code <= 122 /* CharCode.z */;
}
export function isUpperAsciiLetter(code) {
    return code >= 65 /* CharCode.A */ && code <= 90 /* CharCode.Z */;
}
export function equalsIgnoreCase(a, b) {
    return a.length === b.length && compareSubstringIgnoreCase(a, b) === 0;
}
export function startsWithIgnoreCase(str, candidate) {
    const candidateLength = candidate.length;
    if (candidate.length > str.length) {
        return false;
    }
    return compareSubstringIgnoreCase(str, candidate, 0, candidateLength) === 0;
}
/**
 * @returns the length of the common prefix of the two strings.
 */
export function commonPrefixLength(a, b) {
    const len = Math.min(a.length, b.length);
    let i;
    for (i = 0; i < len; i++) {
        if (a.charCodeAt(i) !== b.charCodeAt(i)) {
            return i;
        }
    }
    return len;
}
/**
 * @returns the length of the common suffix of the two strings.
 */
export function commonSuffixLength(a, b) {
    const len = Math.min(a.length, b.length);
    let i;
    const aLastIndex = a.length - 1;
    const bLastIndex = b.length - 1;
    for (i = 0; i < len; i++) {
        if (a.charCodeAt(aLastIndex - i) !== b.charCodeAt(bLastIndex - i)) {
            return i;
        }
    }
    return len;
}
/**
 * See http://en.wikipedia.org/wiki/Surrogate_pair
 */
export function isHighSurrogate(charCode) {
    return (0xD800 <= charCode && charCode <= 0xDBFF);
}
/**
 * See http://en.wikipedia.org/wiki/Surrogate_pair
 */
export function isLowSurrogate(charCode) {
    return (0xDC00 <= charCode && charCode <= 0xDFFF);
}
/**
 * See http://en.wikipedia.org/wiki/Surrogate_pair
 */
export function computeCodePoint(highSurrogate, lowSurrogate) {
    return ((highSurrogate - 0xD800) << 10) + (lowSurrogate - 0xDC00) + 0x10000;
}
/**
 * get the code point that begins at offset `offset`
 */
export function getNextCodePoint(str, len, offset) {
    const charCode = str.charCodeAt(offset);
    if (isHighSurrogate(charCode) && offset + 1 < len) {
        const nextCharCode = str.charCodeAt(offset + 1);
        if (isLowSurrogate(nextCharCode)) {
            return computeCodePoint(charCode, nextCharCode);
        }
    }
    return charCode;
}
/**
 * get the code point that ends right before offset `offset`
 */
function getPrevCodePoint(str, offset) {
    const charCode = str.charCodeAt(offset - 1);
    if (isLowSurrogate(charCode) && offset > 1) {
        const prevCharCode = str.charCodeAt(offset - 2);
        if (isHighSurrogate(prevCharCode)) {
            return computeCodePoint(prevCharCode, charCode);
        }
    }
    return charCode;
}
export class CodePointIterator {
    get offset() {
        return this._offset;
    }
    constructor(str, offset = 0) {
        this._str = str;
        this._len = str.length;
        this._offset = offset;
    }
    setOffset(offset) {
        this._offset = offset;
    }
    prevCodePoint() {
        const codePoint = getPrevCodePoint(this._str, this._offset);
        this._offset -= (codePoint >= 65536 /* Constants.UNICODE_SUPPLEMENTARY_PLANE_BEGIN */ ? 2 : 1);
        return codePoint;
    }
    nextCodePoint() {
        const codePoint = getNextCodePoint(this._str, this._len, this._offset);
        this._offset += (codePoint >= 65536 /* Constants.UNICODE_SUPPLEMENTARY_PLANE_BEGIN */ ? 2 : 1);
        return codePoint;
    }
    eol() {
        return (this._offset >= this._len);
    }
}
export class GraphemeIterator {
    get offset() {
        return this._iterator.offset;
    }
    constructor(str, offset = 0) {
        this._iterator = new CodePointIterator(str, offset);
    }
    nextGraphemeLength() {
        const graphemeBreakTree = GraphemeBreakTree.getInstance();
        const iterator = this._iterator;
        const initialOffset = iterator.offset;
        let graphemeBreakType = graphemeBreakTree.getGraphemeBreakType(iterator.nextCodePoint());
        while (!iterator.eol()) {
            const offset = iterator.offset;
            const nextGraphemeBreakType = graphemeBreakTree.getGraphemeBreakType(iterator.nextCodePoint());
            if (breakBetweenGraphemeBreakType(graphemeBreakType, nextGraphemeBreakType)) {
                // move iterator back
                iterator.setOffset(offset);
                break;
            }
            graphemeBreakType = nextGraphemeBreakType;
        }
        return (iterator.offset - initialOffset);
    }
    prevGraphemeLength() {
        const graphemeBreakTree = GraphemeBreakTree.getInstance();
        const iterator = this._iterator;
        const initialOffset = iterator.offset;
        let graphemeBreakType = graphemeBreakTree.getGraphemeBreakType(iterator.prevCodePoint());
        while (iterator.offset > 0) {
            const offset = iterator.offset;
            const prevGraphemeBreakType = graphemeBreakTree.getGraphemeBreakType(iterator.prevCodePoint());
            if (breakBetweenGraphemeBreakType(prevGraphemeBreakType, graphemeBreakType)) {
                // move iterator back
                iterator.setOffset(offset);
                break;
            }
            graphemeBreakType = prevGraphemeBreakType;
        }
        return (initialOffset - iterator.offset);
    }
    eol() {
        return this._iterator.eol();
    }
}
export function nextCharLength(str, initialOffset) {
    const iterator = new GraphemeIterator(str, initialOffset);
    return iterator.nextGraphemeLength();
}
export function prevCharLength(str, initialOffset) {
    const iterator = new GraphemeIterator(str, initialOffset);
    return iterator.prevGraphemeLength();
}
export function getCharContainingOffset(str, offset) {
    if (offset > 0 && isLowSurrogate(str.charCodeAt(offset))) {
        offset--;
    }
    const endOffset = offset + nextCharLength(str, offset);
    const startOffset = endOffset - prevCharLength(str, endOffset);
    return [startOffset, endOffset];
}
let CONTAINS_RTL = undefined;
function makeContainsRtl() {
    // Generated using https://github.com/alexdima/unicode-utils/blob/main/rtl-test.js
    return /(?:[\u05BE\u05C0\u05C3\u05C6\u05D0-\u05F4\u0608\u060B\u060D\u061B-\u064A\u066D-\u066F\u0671-\u06D5\u06E5\u06E6\u06EE\u06EF\u06FA-\u0710\u0712-\u072F\u074D-\u07A5\u07B1-\u07EA\u07F4\u07F5\u07FA\u07FE-\u0815\u081A\u0824\u0828\u0830-\u0858\u085E-\u088E\u08A0-\u08C9\u200F\uFB1D\uFB1F-\uFB28\uFB2A-\uFD3D\uFD50-\uFDC7\uFDF0-\uFDFC\uFE70-\uFEFC]|\uD802[\uDC00-\uDD1B\uDD20-\uDE00\uDE10-\uDE35\uDE40-\uDEE4\uDEEB-\uDF35\uDF40-\uDFFF]|\uD803[\uDC00-\uDD23\uDE80-\uDEA9\uDEAD-\uDF45\uDF51-\uDF81\uDF86-\uDFF6]|\uD83A[\uDC00-\uDCCF\uDD00-\uDD43\uDD4B-\uDFFF]|\uD83B[\uDC00-\uDEBB])/;
}
/**
 * Returns true if `str` contains any Unicode character that is classified as "R" or "AL".
 */
export function containsRTL(str) {
    if (!CONTAINS_RTL) {
        CONTAINS_RTL = makeContainsRtl();
    }
    return CONTAINS_RTL.test(str);
}
const IS_BASIC_ASCII = /^[\t\n\r\x20-\x7E]*$/;
/**
 * Returns true if `str` contains only basic ASCII characters in the range 32 - 126 (including 32 and 126) or \n, \r, \t
 */
export function isBasicASCII(str) {
    return IS_BASIC_ASCII.test(str);
}
export const UNUSUAL_LINE_TERMINATORS = /[\u2028\u2029]/; // LINE SEPARATOR (LS) or PARAGRAPH SEPARATOR (PS)
/**
 * Returns true if `str` contains unusual line terminators, like LS or PS
 */
export function containsUnusualLineTerminators(str) {
    return UNUSUAL_LINE_TERMINATORS.test(str);
}
export function isFullWidthCharacter(charCode) {
    // Do a cheap trick to better support wrapping of wide characters, treat them as 2 columns
    // http://jrgraphix.net/research/unicode_blocks.php
    //          2E80 - 2EFF   CJK Radicals Supplement
    //          2F00 - 2FDF   Kangxi Radicals
    //          2FF0 - 2FFF   Ideographic Description Characters
    //          3000 - 303F   CJK Symbols and Punctuation
    //          3040 - 309F   Hiragana
    //          30A0 - 30FF   Katakana
    //          3100 - 312F   Bopomofo
    //          3130 - 318F   Hangul Compatibility Jamo
    //          3190 - 319F   Kanbun
    //          31A0 - 31BF   Bopomofo Extended
    //          31F0 - 31FF   Katakana Phonetic Extensions
    //          3200 - 32FF   Enclosed CJK Letters and Months
    //          3300 - 33FF   CJK Compatibility
    //          3400 - 4DBF   CJK Unified Ideographs Extension A
    //          4DC0 - 4DFF   Yijing Hexagram Symbols
    //          4E00 - 9FFF   CJK Unified Ideographs
    //          A000 - A48F   Yi Syllables
    //          A490 - A4CF   Yi Radicals
    //          AC00 - D7AF   Hangul Syllables
    // [IGNORE] D800 - DB7F   High Surrogates
    // [IGNORE] DB80 - DBFF   High Private Use Surrogates
    // [IGNORE] DC00 - DFFF   Low Surrogates
    // [IGNORE] E000 - F8FF   Private Use Area
    //          F900 - FAFF   CJK Compatibility Ideographs
    // [IGNORE] FB00 - FB4F   Alphabetic Presentation Forms
    // [IGNORE] FB50 - FDFF   Arabic Presentation Forms-A
    // [IGNORE] FE00 - FE0F   Variation Selectors
    // [IGNORE] FE20 - FE2F   Combining Half Marks
    // [IGNORE] FE30 - FE4F   CJK Compatibility Forms
    // [IGNORE] FE50 - FE6F   Small Form Variants
    // [IGNORE] FE70 - FEFF   Arabic Presentation Forms-B
    //          FF00 - FFEF   Halfwidth and Fullwidth Forms
    //               [https://en.wikipedia.org/wiki/Halfwidth_and_fullwidth_forms]
    //               of which FF01 - FF5E fullwidth ASCII of 21 to 7E
    // [IGNORE]    and FF65 - FFDC halfwidth of Katakana and Hangul
    // [IGNORE] FFF0 - FFFF   Specials
    return ((charCode >= 0x2E80 && charCode <= 0xD7AF)
        || (charCode >= 0xF900 && charCode <= 0xFAFF)
        || (charCode >= 0xFF01 && charCode <= 0xFF5E));
}
/**
 * A fast function (therefore imprecise) to check if code points are emojis.
 * Generated using https://github.com/alexdima/unicode-utils/blob/main/emoji-test.js
 */
export function isEmojiImprecise(x) {
    return ((x >= 0x1F1E6 && x <= 0x1F1FF) || (x === 8986) || (x === 8987) || (x === 9200)
        || (x === 9203) || (x >= 9728 && x <= 10175) || (x === 11088) || (x === 11093)
        || (x >= 127744 && x <= 128591) || (x >= 128640 && x <= 128764)
        || (x >= 128992 && x <= 129008) || (x >= 129280 && x <= 129535)
        || (x >= 129648 && x <= 129782));
}
// -- UTF-8 BOM
export const UTF8_BOM_CHARACTER = String.fromCharCode(65279 /* CharCode.UTF8_BOM */);
export function startsWithUTF8BOM(str) {
    return !!(str && str.length > 0 && str.charCodeAt(0) === 65279 /* CharCode.UTF8_BOM */);
}
export function containsUppercaseCharacter(target, ignoreEscapedChars = false) {
    if (!target) {
        return false;
    }
    if (ignoreEscapedChars) {
        target = target.replace(/\\./g, '');
    }
    return target.toLowerCase() !== target;
}
/**
 * Produces 'a'-'z', followed by 'A'-'Z'... followed by 'a'-'z', etc.
 */
export function singleLetterHash(n) {
    const LETTERS_CNT = (90 /* CharCode.Z */ - 65 /* CharCode.A */ + 1);
    n = n % (2 * LETTERS_CNT);
    if (n < LETTERS_CNT) {
        return String.fromCharCode(97 /* CharCode.a */ + n);
    }
    return String.fromCharCode(65 /* CharCode.A */ + n - LETTERS_CNT);
}
function breakBetweenGraphemeBreakType(breakTypeA, breakTypeB) {
    // http://www.unicode.org/reports/tr29/#Grapheme_Cluster_Boundary_Rules
    // !!! Let's make the common case a bit faster
    if (breakTypeA === 0 /* GraphemeBreakType.Other */) {
        // see https://www.unicode.org/Public/13.0.0/ucd/auxiliary/GraphemeBreakTest-13.0.0d10.html#table
        return (breakTypeB !== 5 /* GraphemeBreakType.Extend */ && breakTypeB !== 7 /* GraphemeBreakType.SpacingMark */);
    }
    // Do not break between a CR and LF. Otherwise, break before and after controls.
    // GB3                                        CR × LF
    // GB4                       (Control | CR | LF) ÷
    // GB5                                           ÷ (Control | CR | LF)
    if (breakTypeA === 2 /* GraphemeBreakType.CR */) {
        if (breakTypeB === 3 /* GraphemeBreakType.LF */) {
            return false; // GB3
        }
    }
    if (breakTypeA === 4 /* GraphemeBreakType.Control */ || breakTypeA === 2 /* GraphemeBreakType.CR */ || breakTypeA === 3 /* GraphemeBreakType.LF */) {
        return true; // GB4
    }
    if (breakTypeB === 4 /* GraphemeBreakType.Control */ || breakTypeB === 2 /* GraphemeBreakType.CR */ || breakTypeB === 3 /* GraphemeBreakType.LF */) {
        return true; // GB5
    }
    // Do not break Hangul syllable sequences.
    // GB6                                         L × (L | V | LV | LVT)
    // GB7                                  (LV | V) × (V | T)
    // GB8                                 (LVT | T) × T
    if (breakTypeA === 8 /* GraphemeBreakType.L */) {
        if (breakTypeB === 8 /* GraphemeBreakType.L */ || breakTypeB === 9 /* GraphemeBreakType.V */ || breakTypeB === 11 /* GraphemeBreakType.LV */ || breakTypeB === 12 /* GraphemeBreakType.LVT */) {
            return false; // GB6
        }
    }
    if (breakTypeA === 11 /* GraphemeBreakType.LV */ || breakTypeA === 9 /* GraphemeBreakType.V */) {
        if (breakTypeB === 9 /* GraphemeBreakType.V */ || breakTypeB === 10 /* GraphemeBreakType.T */) {
            return false; // GB7
        }
    }
    if (breakTypeA === 12 /* GraphemeBreakType.LVT */ || breakTypeA === 10 /* GraphemeBreakType.T */) {
        if (breakTypeB === 10 /* GraphemeBreakType.T */) {
            return false; // GB8
        }
    }
    // Do not break before extending characters or ZWJ.
    // GB9                                           × (Extend | ZWJ)
    if (breakTypeB === 5 /* GraphemeBreakType.Extend */ || breakTypeB === 13 /* GraphemeBreakType.ZWJ */) {
        return false; // GB9
    }
    // The GB9a and GB9b rules only apply to extended grapheme clusters:
    // Do not break before SpacingMarks, or after Prepend characters.
    // GB9a                                          × SpacingMark
    // GB9b                                  Prepend ×
    if (breakTypeB === 7 /* GraphemeBreakType.SpacingMark */) {
        return false; // GB9a
    }
    if (breakTypeA === 1 /* GraphemeBreakType.Prepend */) {
        return false; // GB9b
    }
    // Do not break within emoji modifier sequences or emoji zwj sequences.
    // GB11    \p{Extended_Pictographic} Extend* ZWJ × \p{Extended_Pictographic}
    if (breakTypeA === 13 /* GraphemeBreakType.ZWJ */ && breakTypeB === 14 /* GraphemeBreakType.Extended_Pictographic */) {
        // Note: we are not implementing the rule entirely here to avoid introducing states
        return false; // GB11
    }
    // GB12                          sot (RI RI)* RI × RI
    // GB13                        [^RI] (RI RI)* RI × RI
    if (breakTypeA === 6 /* GraphemeBreakType.Regional_Indicator */ && breakTypeB === 6 /* GraphemeBreakType.Regional_Indicator */) {
        // Note: we are not implementing the rule entirely here to avoid introducing states
        return false; // GB12 & GB13
    }
    // GB999                                     Any ÷ Any
    return true;
}
class GraphemeBreakTree {
    static getInstance() {
        if (!GraphemeBreakTree._INSTANCE) {
            GraphemeBreakTree._INSTANCE = new GraphemeBreakTree();
        }
        return GraphemeBreakTree._INSTANCE;
    }
    constructor() {
        this._data = getGraphemeBreakRawData();
    }
    getGraphemeBreakType(codePoint) {
        // !!! Let's make 7bit ASCII a bit faster: 0..31
        if (codePoint < 32) {
            if (codePoint === 10 /* CharCode.LineFeed */) {
                return 3 /* GraphemeBreakType.LF */;
            }
            if (codePoint === 13 /* CharCode.CarriageReturn */) {
                return 2 /* GraphemeBreakType.CR */;
            }
            return 4 /* GraphemeBreakType.Control */;
        }
        // !!! Let's make 7bit ASCII a bit faster: 32..126
        if (codePoint < 127) {
            return 0 /* GraphemeBreakType.Other */;
        }
        const data = this._data;
        const nodeCount = data.length / 3;
        let nodeIndex = 1;
        while (nodeIndex <= nodeCount) {
            if (codePoint < data[3 * nodeIndex]) {
                // go left
                nodeIndex = 2 * nodeIndex;
            }
            else if (codePoint > data[3 * nodeIndex + 1]) {
                // go right
                nodeIndex = 2 * nodeIndex + 1;
            }
            else {
                // hit
                return data[3 * nodeIndex + 2];
            }
        }
        return 0 /* GraphemeBreakType.Other */;
    }
}
GraphemeBreakTree._INSTANCE = null;
function getGraphemeBreakRawData() {
    // generated using https://github.com/alexdima/unicode-utils/blob/main/grapheme-break.js
    return 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70845,70845,5,70847,70848,5,70850,70851,5,71088,71089,7,71096,71099,7,71102,71102,7,71132,71133,5,71219,71226,5,71229,71229,5,71231,71232,5,71340,71340,7,71342,71343,7,71350,71350,7,71453,71455,5,71462,71462,7,71724,71726,7,71736,71736,7,71984,71984,5,71991,71992,7,71997,71997,7,71999,71999,1,72001,72001,1,72003,72003,5,72148,72151,5,72156,72159,7,72164,72164,7,72243,72248,5,72250,72250,1,72263,72263,5,72279,72280,7,72324,72329,1,72343,72343,7,72751,72751,7,72760,72765,5,72767,72767,5,72873,72873,7,72881,72881,7,72884,72884,7,73009,73014,5,73020,73021,5,73030,73030,1,73098,73102,7,73107,73108,7,73110,73110,7,73459,73460,5,78896,78904,4,92976,92982,5,94033,94087,7,94180,94180,5,113821,113822,5,118528,118573,5,119141,119141,5,119143,119145,5,119150,119154,5,119163,119170,5,119210,119213,5,121344,121398,5,121461,121461,5,121499,121503,5,122880,122886,5,122907,122913,5,122918,122922,5,123566,123566,5,125136,125142,5,126976,126979,14,126981,127182,14,127184,127231,14,127279,127279,14,127344,127345,14,127374,127374,14,127405,127461,14,127489,127490,14,127514,127514,14,127538,127546,14,127561,127567,14,127570,127743,14,127757,127758,14,127760,127760,14,127762,127762,14,127766,127768,14,127770,127770,14,127772,127772,14,127775,127776,14,127778,127779,14,127789,127791,14,127794,127795,14,127798,127798,14,127819,127819,14,127824,127824,14,127868,127868,14,127870,127871,14,127892,127893,14,127896,127896,14,127900,127901,14,127904,127940,14,127942,127942,14,127944,127944,14,127946,127946,14,127951,127955,14,127968,127971,14,127973,127984,14,127987,127987,14,127989,127989,14,127991,127991,14,127995,127999,5,128008,128008,14,128012,128014,14,128017,128018,14,128020,128020,14,128022,128022,14,128042,128042,14,128063,128063,14,128065,128065,14,128101,128101,14,128108,128109,14,128173,128173,14,128182,128183,14,128236,128237,14,128239,128239,14,128245,128245,14,128248,128248,14,128253,128253,14,128255,128258,14,128260,128263,14,128265,128265,14,128277,128277,14,128300,128301,14,128326,128328,14,128331,128334,14,128336,128347,14,128360,128366,14,128369,128370,14,128378,128378,14,128391,128391,14,128394,128397,14,128400,128400,14,128405,128406,14,128420,128420,14,128422,128423,14,128425,128432,14,128435,128443,14,128445,128449,14,128453,128464,14,128468,128475,14,128479,128480,14,128482,128482,14,128484,128487,14,128489,128494,14,128496,128498,14,128500,128505,14,128507,128511,14,128513,128518,14,128521,128525,14,128527,128527,14,128529,128529,14,128533,128533,14,128535,128535,14,128537,128537,14]');
}
//#endregion
/**
 * Computes the offset after performing a left delete on the given string,
 * while considering unicode grapheme/emoji rules.
*/
export function getLeftDeleteOffset(offset, str) {
    if (offset === 0) {
        return 0;
    }
    // Try to delete emoji part.
    const emojiOffset = getOffsetBeforeLastEmojiComponent(offset, str);
    if (emojiOffset !== undefined) {
        return emojiOffset;
    }
    // Otherwise, just skip a single code point.
    const iterator = new CodePointIterator(str, offset);
    iterator.prevCodePoint();
    return iterator.offset;
}
function getOffsetBeforeLastEmojiComponent(initialOffset, str) {
    // See https://www.unicode.org/reports/tr51/tr51-14.html#EBNF_and_Regex for the
    // structure of emojis.
    const iterator = new CodePointIterator(str, initialOffset);
    let codePoint = iterator.prevCodePoint();
    // Skip modifiers
    while ((isEmojiModifier(codePoint) || codePoint === 65039 /* CodePoint.emojiVariantSelector */ || codePoint === 8419 /* CodePoint.enclosingKeyCap */)) {
        if (iterator.offset === 0) {
            // Cannot skip modifier, no preceding emoji base.
            return undefined;
        }
        codePoint = iterator.prevCodePoint();
    }
    // Expect base emoji
    if (!isEmojiImprecise(codePoint)) {
        // Unexpected code point, not a valid emoji.
        return undefined;
    }
    let resultOffset = iterator.offset;
    if (resultOffset > 0) {
        // Skip optional ZWJ code points that combine multiple emojis.
        // In theory, we should check if that ZWJ actually combines multiple emojis
        // to prevent deleting ZWJs in situations we didn't account for.
        const optionalZwjCodePoint = iterator.prevCodePoint();
        if (optionalZwjCodePoint === 8205 /* CodePoint.zwj */) {
            resultOffset = iterator.offset;
        }
    }
    return resultOffset;
}
function isEmojiModifier(codePoint) {
    return 0x1F3FB <= codePoint && codePoint <= 0x1F3FF;
}
export const noBreakWhitespace = '\xa0';
export class AmbiguousCharacters {
    static getInstance(locales) {
        return _a.cache.get(Array.from(locales));
    }
    static getLocales() {
        return _a._locales.value;
    }
    constructor(confusableDictionary) {
        this.confusableDictionary = confusableDictionary;
    }
    isAmbiguous(codePoint) {
        return this.confusableDictionary.has(codePoint);
    }
    /**
     * Returns the non basic ASCII code point that the given code point can be confused,
     * or undefined if such code point does note exist.
     */
    getPrimaryConfusable(codePoint) {
        return this.confusableDictionary.get(codePoint);
    }
    getConfusableCodePoints() {
        return new Set(this.confusableDictionary.keys());
    }
}
_a = AmbiguousCharacters;
AmbiguousCharacters.ambiguousCharacterData = new Lazy(() => {
    // Generated using https://github.com/hediet/vscode-unicode-data
    // Stored as key1, value1, key2, value2, ...
    return 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});
AmbiguousCharacters.cache = new LRUCachedFunction((locales) => {
    function arrayToMap(arr) {
        const result = new Map();
        for (let i = 0; i < arr.length; i += 2) {
            result.set(arr[i], arr[i + 1]);
        }
        return result;
    }
    function mergeMaps(map1, map2) {
        const result = new Map(map1);
        for (const [key, value] of map2) {
            result.set(key, value);
        }
        return result;
    }
    function intersectMaps(map1, map2) {
        if (!map1) {
            return map2;
        }
        const result = new Map();
        for (const [key, value] of map1) {
            if (map2.has(key)) {
                result.set(key, value);
            }
        }
        return result;
    }
    const data = _a.ambiguousCharacterData.value;
    let filteredLocales = locales.filter((l) => !l.startsWith('_') && l in data);
    if (filteredLocales.length === 0) {
        filteredLocales = ['_default'];
    }
    let languageSpecificMap = undefined;
    for (const locale of filteredLocales) {
        const map = arrayToMap(data[locale]);
        languageSpecificMap = intersectMaps(languageSpecificMap, map);
    }
    const commonMap = arrayToMap(data['_common']);
    const map = mergeMaps(commonMap, languageSpecificMap);
    return new _a(map);
});
AmbiguousCharacters._locales = new Lazy(() => Object.keys(_a.ambiguousCharacterData.value).filter((k) => !k.startsWith('_')));
export class InvisibleCharacters {
    static getRawData() {
        // Generated using https://github.com/hediet/vscode-unicode-data
        return JSON.parse('[9,10,11,12,13,32,127,160,173,847,1564,4447,4448,6068,6069,6155,6156,6157,6158,7355,7356,8192,8193,8194,8195,8196,8197,8198,8199,8200,8201,8202,8203,8204,8205,8206,8207,8234,8235,8236,8237,8238,8239,8287,8288,8289,8290,8291,8292,8293,8294,8295,8296,8297,8298,8299,8300,8301,8302,8303,10240,12288,12644,65024,65025,65026,65027,65028,65029,65030,65031,65032,65033,65034,65035,65036,65037,65038,65039,65279,65440,65520,65521,65522,65523,65524,65525,65526,65527,65528,65532,78844,119155,119156,119157,119158,119159,119160,119161,119162,917504,917505,917506,917507,917508,917509,917510,917511,917512,917513,917514,917515,917516,917517,917518,917519,917520,917521,917522,917523,917524,917525,917526,917527,917528,917529,917530,917531,917532,917533,917534,917535,917536,917537,917538,917539,917540,917541,917542,917543,917544,917545,917546,917547,917548,917549,917550,917551,917552,917553,917554,917555,917556,917557,917558,917559,917560,917561,917562,917563,917564,917565,917566,917567,917568,917569,917570,917571,917572,917573,917574,917575,917576,917577,917578,917579,917580,917581,917582,917583,917584,917585,917586,917587,917588,917589,917590,917591,917592,917593,917594,917595,917596,917597,917598,917599,917600,917601,917602,917603,917604,917605,917606,917607,917608,917609,917610,917611,917612,917613,917614,917615,917616,917617,917618,917619,917620,917621,917622,917623,917624,917625,917626,917627,917628,917629,917630,917631,917760,917761,917762,917763,917764,917765,917766,917767,917768,917769,917770,917771,917772,917773,917774,917775,917776,917777,917778,917779,917780,917781,917782,917783,917784,917785,917786,917787,917788,917789,917790,917791,917792,917793,917794,917795,917796,917797,917798,917799,917800,917801,917802,917803,917804,917805,917806,917807,917808,917809,917810,917811,917812,917813,917814,917815,917816,917817,917818,917819,917820,917821,917822,917823,917824,917825,917826,917827,917828,917829,917830,917831,917832,917833,917834,917835,917836,917837,917838,917839,917840,917841,917842,917843,917844,917845,917846,917847,917848,917849,917850,917851,917852,917853,917854,917855,917856,917857,917858,917859,917860,917861,917862,917863,917864,917865,917866,917867,917868,917869,917870,917871,917872,917873,917874,917875,917876,917877,917878,917879,917880,917881,917882,917883,917884,917885,917886,917887,917888,917889,917890,917891,917892,917893,917894,917895,917896,917897,917898,917899,917900,917901,917902,917903,917904,917905,917906,917907,917908,917909,917910,917911,917912,917913,917914,917915,917916,917917,917918,917919,917920,917921,917922,917923,917924,917925,917926,917927,917928,917929,917930,917931,917932,917933,917934,917935,917936,917937,917938,917939,917940,917941,917942,917943,917944,917945,917946,917947,917948,917949,917950,917951,917952,917953,917954,917955,917956,917957,917958,917959,917960,917961,917962,917963,917964,917965,917966,917967,917968,917969,917970,917971,917972,917973,917974,917975,917976,917977,917978,917979,917980,917981,917982,917983,917984,917985,917986,917987,917988,917989,917990,917991,917992,917993,917994,917995,917996,917997,917998,917999]');
    }
    static getData() {
        if (!this._data) {
            this._data = new Set(InvisibleCharacters.getRawData());
        }
        return this._data;
    }
    static isInvisibleCharacter(codePoint) {
        return InvisibleCharacters.getData().has(codePoint);
    }
    static get codePoints() {
        return InvisibleCharacters.getData();
    }
}
InvisibleCharacters._data = undefined;