From 24c40b583687e6f67ba57e6c8927515ceb5399ce Mon Sep 17 00:00:00 2001
From: meatloaf <ktulip2@protonmail.com>
Date: Wed, 3 Feb 2021 20:53:17 -0600
Subject: Issue #1726 - Implement String.replaceAll()

This also implements IsRegExp, as this demands it.
Ported from https://bugzilla.mozilla.org/show_bug.cgi?id=1540021
---
 js/src/builtin/RegExp.js | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

(limited to 'js/src/builtin/RegExp.js')

diff --git a/js/src/builtin/RegExp.js b/js/src/builtin/RegExp.js
index 91212066c..7218fc0e8 100644
--- a/js/src/builtin/RegExp.js
+++ b/js/src/builtin/RegExp.js
@@ -1166,3 +1166,24 @@ function RegExpStringIteratorNext() {
     result.value = match;
     return result;
 }
+
+// String.prototype.matchAll proposal.
+// ES2020 draft rev e97c95d064750fb949b6778584702dd658cf5624
+// 7.2.8 IsRegExp ( argument )
+function IsRegExp(argument) {
+    // Step 1.
+    if (!IsObject(argument)) {
+        return false;
+    }
+
+    // Step 2.
+    var matcher = argument[std_match];
+
+    // Step 3.
+    if (matcher !== undefined) {
+        return !!matcher;
+    }
+
+    // Steps 4-5.
+    return IsPossiblyWrappedRegExpObject(argument);
+}
-- 
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