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LibJS: Implement (mostly) String.prototype.match

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JavaScript has a couple of different ways to run a regular expression
on a string. This adds support for one more. :^)
This commit is contained in:
Andreas Kling 2021-03-14 11:03:11 +01:00
parent 2c24c0e451
commit 1db943e146
7 changed files with 91 additions and 1 deletions
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26
Userland/Libraries/LibJS/Runtime/RegExpObject.cpp
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@ -168,4 +168,30 @@ JS_DEFINE_NATIVE_SETTER(RegExpObject::set_last_index)
regexp_object->regex().start_offset = index;
}
RegExpObject* regexp_create(GlobalObject& global_object, Value pattern, Value flags)
{
// https://tc39.es/ecma262/#sec-regexpcreate
String p;
if (pattern.is_undefined()) {
p = String::empty();
} else {
p = pattern.to_string(global_object);
if (p.is_null())
return nullptr;
}
String f;
if (flags.is_empty()) {
f = String::empty();
} else {
f = flags.to_string(global_object);
if (f.is_null())
return nullptr;
}
// FIXME: This is awkward: the RegExpObject C++ constructor may throw a VM exception.
auto* obj = RegExpObject::create(global_object, move(p), move(f));
if (global_object.vm().exception())
return nullptr;
return obj;
}
}