LibWeb: Implement URL.parse

This was an addition to the URL spec, see:

whatwg/url@58acb0

Tests/LibWeb/Text/expected/URL/url.txt

@@ -78,3 +78,84 @@ port => ''
 pathname => '/d:/'
 search => ''
 hash => ''
+=========================================
+URL.parse('ftp://serenityos.org:21', undefined)
+protocol => 'ftp:'
+username => ''
+password => ''
+host => 'serenityos.org'
+hostname => 'serenityos.org'
+port => ''
+pathname => '/'
+search => ''
+hash => ''
+URL.parse('http://[0:1:0:1:0:1:0:1]', undefined)
+protocol => 'http:'
+username => ''
+password => ''
+host => '[0:1:0:1:0:1:0:1]'
+hostname => '[0:1:0:1:0:1:0:1]'
+port => ''
+pathname => '/'
+search => ''
+hash => ''
+URL.parse('http://[1:0:1:0:1:0:1:0]', undefined)
+protocol => 'http:'
+username => ''
+password => ''
+host => '[1:0:1:0:1:0:1:0]'
+hostname => '[1:0:1:0:1:0:1:0]'
+port => ''
+pathname => '/'
+search => ''
+hash => ''
+URL.parse('http://[1:1:0:0:1:0:0:0]/', undefined)
+protocol => 'http:'
+username => ''
+password => ''
+host => '[1:1:0:0:1::]'
+hostname => '[1:1:0:0:1::]'
+port => ''
+pathname => '/'
+search => ''
+hash => ''
+URL.parse('unknown://serenityos.org:0', undefined)
+protocol => 'unknown:'
+username => ''
+password => ''
+host => 'serenityos.org:0'
+hostname => 'serenityos.org'
+port => '0'
+pathname => ''
+search => ''
+hash => ''
+URL.parse('http://serenityos.org/cat?dog#meow"woof', undefined)
+protocol => 'http:'
+username => ''
+password => ''
+host => 'serenityos.org'
+hostname => 'serenityos.org'
+port => ''
+pathname => '/cat'
+search => '?dog'
+hash => '#meow%22woof'
+URL.parse('/hello', 'file://friends/')
+protocol => 'file:'
+username => ''
+password => ''
+host => 'friends'
+hostname => 'friends'
+port => ''
+pathname => '/hello'
+search => ''
+hash => ''
+URL.parse('//d:/..', 'file:///C:/a/b')
+protocol => 'file:'
+username => ''
+password => ''
+host => ''
+hostname => ''
+port => ''
+pathname => '/d:/'
+search => ''
+hash => ''

Tests/LibWeb/Text/input/URL/url.html

@@ -1,13 +1,7 @@
 <script src="../include.js"></script>
 <script>
     test(() => {
-        function printURL(input, base) {
-            if (base === undefined)
-                println(`new URL('${input}', ${base})`);
-            else
-                println(`new URL('${input}', '${base}')`);
-
-            const url = new URL(input, base);
+        function printURL(url) {
             println(`protocol => '${url.protocol}'`);
             println(`username => '${url.username}'`);
             println(`password => '${url.password}'`);
@@ -19,7 +13,7 @@
             println(`hash => '${url.hash}'`);
         }
 
-        for (url of [
+        const urls = [
             { input: 'ftp://serenityos.org:21' },
             { input: 'http://[0:1:0:1:0:1:0:1]' },
             { input: 'http://[1:0:1:0:1:0:1:0]' },
@@ -28,8 +22,26 @@
             { input: 'http://serenityos.org/cat?dog#meow"woof' },
             { input: '/hello', base: 'file://friends/' },
             { input: '//d:/..', base: 'file:///C:/a/b' },
-        ]) {
-            printURL(url.input, url.base);
+        ];
+
+        for (url of urls) {
+            if (url.base === undefined)
+                println(`new URL('${url.input}', ${url.base})`);
+            else
+                println(`new URL('${url.input}', '${url.base}')`);
+
+            printURL(new URL(url.input, url.base));
+        }
+
+        println('=========================================');
+
+        for (url of urls) {
+            if (url.base === undefined)
+                println(`URL.parse('${url.input}', ${url.base})`);
+            else
+                println(`URL.parse('${url.input}', '${url.base}')`);
+
+            printURL(URL.parse(url.input, url.base));
         }
     });
 </script>

Userland/Libraries/LibWeb/DOMURL/DOMURL.cpp

@@ -70,6 +70,24 @@ JS::NonnullGCPtr<DOMURL> DOMURL::initialize_a_url(JS::Realm& realm, URL::URL con
     return result_url;
 }
 
+// https://url.spec.whatwg.org/#dom-url-parse
+JS::GCPtr<DOMURL> DOMURL::parse_for_bindings(JS::VM& vm, String const& url, Optional<String> const& base)
+{
+    auto& realm = *vm.current_realm();
+
+    // 1. Let parsedURL be the result of running the API URL parser on url with base, if given.
+    auto parsed_url = parse_api_url(url, base);
+
+    // 2. If parsedURL is failure, then return null.
+    if (!parsed_url.has_value())
+        return nullptr;
+
+    // 3. Let url be a new URL object.
+    // 4. Initialize url with parsedURL.
+    // 5. Return url.
+    return initialize_a_url(realm, parsed_url.value());
+}
+
 // https://url.spec.whatwg.org/#dom-url-url
 WebIDL::ExceptionOr<JS::NonnullGCPtr<DOMURL>> DOMURL::construct_impl(JS::Realm& realm, String const& url, Optional<String> const& base)
 {

Userland/Libraries/LibWeb/DOMURL/DOMURL.h

@@ -29,6 +29,7 @@ class DOMURL : public Bindings::PlatformObject {
     static WebIDL::ExceptionOr<String> create_object_url(JS::VM&, JS::NonnullGCPtr<FileAPI::Blob> object);
     static WebIDL::ExceptionOr<void> revoke_object_url(JS::VM&, StringView url);
 
+    static JS::GCPtr<DOMURL> parse_for_bindings(JS::VM&, String const& url, Optional<String> const& base = {});
     static bool can_parse(JS::VM&, String const& url, Optional<String> const& base = {});
 
     WebIDL::ExceptionOr<String> href() const;

Userland/Libraries/LibWeb/DOMURL/DOMURL.idl

@@ -6,6 +6,7 @@
 interface URL {
     constructor(USVString url, optional USVString base);
 
+    [ImplementedAs=parse_for_bindings] static DOMURL? parse(USVString url, optional USVString base);
     static boolean canParse(USVString url, optional USVString base);
 
     stringifier attribute USVString href;