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Regular Expressions for the JavaScript target.

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Regular_Expressions

Example:

import std/jsre
let jsregex: RegExp = newRegExp(r"\s+", r"i")
jsregex.compile(r"\w+", r"i")
assert "nim javascript".contains jsregex
assert jsregex.exec(r"nim javascript") == @["nim".cstring]
assert jsregex.toCstring() == r"/\w+/i"
jsregex.compile(r"[0-9]", r"i")
assert "0123456789abcd".contains jsregex
assert $jsregex == "/[0-9]/i"
jsregex.compile(r"abc", r"i")
assert "abcd".startsWith jsregex
assert "dabc".endsWith jsregex
jsregex.compile(r"\d", r"i")
assert "do1ne".split(jsregex) == @["do".cstring, "ne".cstring]
jsregex.compile(r"[lw]", r"i")
assert "hello world".replace(jsregex,"X") == "heXlo world"
jsregex.compile(r"([a-z])\1*", r"g")
assert "abbcccdddd".replace(jsregex, proc (m: varargs[cstring]): cstring = ($m[0] & $(m.len)).cstring) == "a1b2c3d4"
let digitsRegex: RegExp = newRegExp(r"\d")
assert "foo".match(digitsRegex) == @[]

Types

RegExp = ref object of JsRoot flags*: cstring ## cstring that contains the flags of the RegExp object. dotAll*: bool ## Whether `.` matches newlines or not. global*: bool ## Whether to test against all possible matches in a string, or only against the first. ignoreCase*: bool ## Whether to ignore case while attempting a match in a string. multiline*: bool ## Whether to search in strings across multiple lines. source*: cstring ## The text of the pattern. sticky*: bool ## Whether the search is sticky. unicode*: bool ## Whether Unicode features are enabled. lastIndex*: cint ## Index at which to start the next match (read/write property). input*: cstring ## Read-only and modified on successful match. lastMatch*: cstring ## Ditto. lastParen*: cstring ## Ditto. leftContext*: cstring ## Ditto. rightContext*: cstring ## Ditto. hasIndices*: bool ## https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/RegExp/hasIndices: Regular Expressions for JavaScript target. See https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/RegExp Source Edit

Procs

func `$`(self: RegExp): string {....raises: [], tags: [], forbids: [].}: Source Edit
func compile(self: RegExp; pattern: cstring; flags: cstring) {. importjs: "#.compile(@)", ...raises: [], tags: [], forbids: [].}: Recompiles a regular expression during execution of a script. Source Edit
func contains(pattern: cstring; self: RegExp): bool {....raises: [], tags: [], forbids: [].}: Tests for a substring match in its string parameter.
Example:

let jsregex: RegExp = newRegExp(r"bc$", r"i") assert jsregex in r"abc" assert jsregex notin r"abcd" assert "xabc".contains jsregex
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func endsWith(pattern: cstring; self: RegExp): bool {....raises: [], tags: [], forbids: [].}: Tests if string ends with given RegExp
Example:

let jsregex: RegExp = newRegExp(r"bcd", r"i") assert "abcd".endsWith jsregex
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func exec(self: RegExp; pattern: cstring): seq[cstring] {. importjs: "(#.exec(#) || [])", ...raises: [], tags: [], forbids: [].}: Executes a search for a match in its string parameter. Source Edit
func match(pattern: cstring; self: RegExp): seq[cstring] {. importjs: "(#.match(#) || [])", ...raises: [], tags: [], forbids: [].}: Returns an array of matches of a RegExp against given string Source Edit
func newRegExp(pattern: cstring): RegExp {.importjs: "new RegExp(@)", ...raises: [], tags: [], forbids: [].}: Source Edit
func newRegExp(pattern: cstring; flags: cstring): RegExp {. importjs: "new RegExp(@)", ...raises: [], tags: [], forbids: [].}: Creates a new RegExp object. Source Edit
func replace(pattern: cstring; self: RegExp; cb: proc (args: varargs[cstring]): cstring): cstring {.importcpp, ...raises: [], tags: [], forbids: [].}: Returns a new string with some or all matches of a pattern replaced by given callback function Source Edit
func replace(pattern: cstring; self: RegExp; replacement: cstring): cstring {. importjs: "#.replace(#, #)", ...raises: [], tags: [], forbids: [].}: Returns a new string with some or all matches of a pattern replaced by given replacement Source Edit
func split(pattern: cstring; self: RegExp): seq[cstring] {. importjs: "(#.split(#) || [])", ...raises: [], tags: [], forbids: [].}: Divides a string into an ordered list of substrings and returns the array Source Edit
func startsWith(pattern: cstring; self: RegExp): bool {....raises: [], tags: [], forbids: [].}: Tests if string starts with given RegExp
Example:

let jsregex: RegExp = newRegExp(r"abc", r"i") assert "abcd".startsWith jsregex
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func toCstring(self: RegExp): cstring {.importjs: "#.toString()", ...raises: [], tags: [], forbids: [].}: Returns a string representing the RegExp object. Source Edit