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export function bind(f) { let args = Array.prototype.slice.call(arguments, 1) return function(){return f.apply(null, args)} } export function copyObj(obj, target, overwrite) { if (!target) target = {} for (let prop in obj) if (obj.hasOwnProperty(prop) && (overwrite !== false \|\| !target.hasOwnProperty(prop))) target[prop] = obj[prop] return target } // Counts the column offset in a string, taking tabs into account. // Used mostly to find indentation. export function countColumn(string, end, tabSize, startIndex, startValue) { if (end == null) { end = string.search(/[^\s\u00a0]/) if (end == -1) end = string.length } for (let i = startIndex \|\| 0, n = startValue \|\| 0;;) { let nextTab = string.indexOf("\t", i) if (nextTab < 0 \|\| nextTab >= end) return n + (end - i) n += nextTab - i n += tabSize - (n % tabSize) i = nextTab + 1 } } export class Delayed { constructor() { this.id = null this.f = null this.time = 0 this.handler = bind(this.onTimeout, this) } onTimeout(self) { self.id = 0 if (self.time <= +new Date) { self.f() } else { setTimeout(self.handler, self.time - +new Date) } } set(ms, f) { this.f = f const time = +new Date + ms if (!this.id \|\| time < this.time) { clearTimeout(this.id) this.id = setTimeout(this.handler, ms) this.time = time } } } export function indexOf(array, elt) { for (let i = 0; i < array.length; ++i) if (array[i] == elt) return i return -1 } // Number of pixels added to scroller and sizer to hide scrollbar export let scrollerGap = 50 // Returned or thrown by various protocols to signal 'I'm not // handling this'. export let Pass = {toString: function(){return "CodeMirror.Pass"}} // Reused option objects for setSelection & friends export let sel_dontScroll = {scroll: false}, sel_mouse = {origin: "*mouse"}, sel_move = {origin: "+move"} // The inverse of countColumn -- find the offset that corresponds to // a particular column. export function findColumn(string, goal, tabSize) { for (let pos = 0, col = 0;;) { let nextTab = string.indexOf("\t", pos) if (nextTab == -1) nextTab = string.length let skipped = nextTab - pos if (nextTab == string.length \|\| col + skipped >= goal) return pos + Math.min(skipped, goal - col) col += nextTab - pos col += tabSize - (col % tabSize) pos = nextTab + 1 if (col >= goal) return pos } } let spaceStrs = [""] export function spaceStr(n) { while (spaceStrs.length <= n) spaceStrs.push(lst(spaceStrs) + " ") return spaceStrs[n] } export function lst(arr) { return arr[arr.length-1] } export function map(array, f) { let out = [] for (let i = 0; i < array.length; i++) out[i] = f(array[i], i) return out } export function insertSorted(array, value, score) { let pos = 0, priority = score(value) while (pos < array.length && score(array[pos]) <= priority) pos++ array.splice(pos, 0, value) } function nothing() {} export function createObj(base, props) { let inst if (Object.create) { inst = Object.create(base) } else { nothing.prototype = base inst = new nothing() } if (props) copyObj(props, inst) return inst } let nonASCIISingleCaseWordChar = /[\u00df\u0587\u0590-\u05f4\u0600-\u06ff\u3040-\u309f\u30a0-\u30ff\u3400-\u4db5\u4e00-\u9fcc\uac00-\ud7af]/ export function isWordCharBasic(ch) { return /\w/.test(ch) \|\| ch > "\x80" && (ch.toUpperCase() != ch.toLowerCase() \|\| nonASCIISingleCaseWordChar.test(ch)) } export function isWordChar(ch, helper) { if (!helper) return isWordCharBasic(ch) if (helper.source.indexOf("\\w") > -1 && isWordCharBasic(ch)) return true return helper.test(ch) } export function isEmpty(obj) { for (let n in obj) if (obj.hasOwnProperty(n) && obj[n]) return false return true } // Extending unicode characters. A series of a non-extending char + // any number of extending chars is treated as a single unit as far // as editing and measuring is concerned. This is not fully correct, // since some scripts/fonts/browsers also treat other configurations // of code points as a group. let extendingChars = /[\u0300-\u036f\u0483-\u0489\u0591-\u05bd\u05bf\u05c1\u05c2\u05c4\u05c5\u05c7\u0610-\u061a\u064b-\u065e\u0670\u06d6-\u06dc\u06de-\u06e4\u06e7\u06e8\u06ea-\u06ed\u0711\u0730-\u074a\u07a6-\u07b0\u07eb-\u07f3\u0816-\u0819\u081b-\u0823\u0825-\u0827\u0829-\u082d\u0900-\u0902\u093c\u0941-\u0948\u094d\u0951-\u0955\u0962\u0963\u0981\u09bc\u09be\u09c1-\u09c4\u09cd\u09d7\u09e2\u09e3\u0a01\u0a02\u0a3c\u0a41\u0a42\u0a47\u0a48\u0a4b-\u0a4d\u0a51\u0a70\u0a71\u0a75\u0a81\u0a82\u0abc\u0ac1-\u0ac5\u0ac7\u0ac8\u0acd\u0ae2\u0ae3\u0b01\u0b3c\u0b3e\u0b3f\u0b41-\u0b44\u0b4d\u0b56\u0b57\u0b62\u0b63\u0b82\u0bbe\u0bc0\u0bcd\u0bd7\u0c3e-\u0c40\u0c46-\u0c48\u0c4a-\u0c4d\u0c55\u0c56\u0c62\u0c63\u0cbc\u0cbf\u0cc2\u0cc6\u0ccc\u0ccd\u0cd5\u0cd6\u0ce2\u0ce3\u0d3e\u0d41-\u0d44\u0d4d\u0d57\u0d62\u0d63\u0dca\u0dcf\u0dd2-\u0dd4\u0dd6\u0ddf\u0e31\u0e34-\u0e3a\u0e47-\u0e4e\u0eb1\u0eb4-\u0eb9\u0ebb\u0ebc\u0ec8-\u0ecd\u0f18\u0f19\u0f35\u0f37\u0f39\u0f71-\u0f7e\u0f80-\u0f84\u0f86\u0f87\u0f90-\u0f97\u0f99-\u0fbc\u0fc6\u102d-\u1030\u1032-\u1037\u1039\u103a\u103d\u103e\u1058\u1059\u105e-\u1060\u1071-\u1074\u1082\u1085\u1086\u108d\u109d\u135f\u1712-\u1714\u1732-\u1734\u1752\u1753\u1772\u1773\u17b7-\u17bd\u17c6\u17c9-\u17d3\u17dd\u180b-\u180d\u18a9\u1920-\u1922\u1927\u1928\u1932\u1939-\u193b\u1a17\u1a18\u1a56\u1a58-\u1a5e\u1a60\u1a62\u1a65-\u1a6c\u1a73-\u1a7c\u1a7f\u1b00-\u1b03\u1b34\u1b36-\u1b3a\u1b3c\u1b42\u1b6b-\u1b73\u1b80\u1b81\u1ba2-\u1ba5\u1ba8\u1ba9\u1c2c-\u1c33\u1c36\u1c37\u1cd0-\u1cd2\u1cd4-\u1ce0\u1ce2-\u1ce8\u1ced\u1dc0-\u1de6\u1dfd-\u1dff\u200c\u200d\u20d0-\u20f0\u2cef-\u2cf1\u2de0-\u2dff\u302a-\u302f\u3099\u309a\ua66f-\ua672\ua67c\ua67d\ua6f0\ua6f1\ua802\ua806\ua80b\ua825\ua826\ua8c4\ua8e0-\ua8f1\ua926-\ua92d\ua947-\ua951\ua980-\ua982\ua9b3\ua9b6-\ua9b9\ua9bc\uaa29-\uaa2e\uaa31\uaa32\uaa35\uaa36\uaa43\uaa4c\uaab0\uaab2-\uaab4\uaab7\uaab8\uaabe\uaabf\uaac1\uabe5\uabe8\uabed\udc00-\udfff\ufb1e\ufe00-\ufe0f\ufe20-\ufe26\uff9e\uff9f]/ export function isExtendingChar(ch) { return ch.charCodeAt(0) >= 768 && extendingChars.test(ch) } // Returns a number from the range [`0`; `str.length`] unless `pos` is outside that range. export function skipExtendingChars(str, pos, dir) { while ((dir < 0 ? pos > 0 : pos < str.length) && isExtendingChar(str.charAt(pos))) pos += dir return pos } // Returns the value from the range [`from`; `to`] that satisfies // `pred` and is closest to `from`. Assumes that at least `to` // satisfies `pred`. Supports `from` being greater than `to`. export function findFirst(pred, from, to) { // At any point we are certain `to` satisfies `pred`, don't know // whether `from` does. let dir = from > to ? -1 : 1 for (;;) { if (from == to) return from let midF = (from + to) / 2, mid = dir < 0 ? Math.ceil(midF) : Math.floor(midF) if (mid == from) return pred(mid) ? from : to if (pred(mid)) to = mid else from = mid + dir } }

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