Allows '%' and IPv6 in opaque hosts

whatwg/url#218

url.h

@@ -497,7 +497,7 @@ class url_parser {
     static bool url_parse(url_serializer& urls, const CharT* first, const CharT* last, const url* base, State state_override = not_set_state);
 
     template <typename CharT>
-    static bool parse_url_host(url_serializer& urls, const CharT* first, const CharT* last);
+    static bool parse_opaque_host(url_serializer& urls, const CharT* first, const CharT* last);
 
     template <typename CharT>
     static bool parse_host(url_serializer& urls, const CharT* first, const CharT* last);
@@ -947,7 +947,7 @@ inline bool url_parser::url_parse(url_serializer& urls, const CharT* first, cons
         }
 
         // parse and set host:
-        if (!parse_url_host(urls, pointer, it_host_end))
+        if (!parse_host(urls, pointer, it_host_end))
             return false;
 
         if (is_port) {
@@ -1268,14 +1268,8 @@ static inline bool is_valid_opaque_host_chars(const CharT* first, const CharT* l
 }
 
 template <typename CharT>
-inline bool url_parser::parse_url_host(url_serializer& urls, const CharT* first, const CharT* last) {
-    if (urls.is_special_scheme())
-        return parse_host(urls, first, last);
-
-    // TODO: URL standard bug: percent encoded hosts will be
-    // reported as invalid by: !is_valid_host_chars(..)
-
-    if (!is_valid_host_chars(first, last))
+inline bool url_parser::parse_opaque_host(url_serializer& urls, const CharT* first, const CharT* last) {
+    if (!is_valid_opaque_host_chars(first, last))
         return false; //TODO-ERR: failure
 
     std::string& str_host = urls.start_part(url::HOST);
@@ -1315,6 +1309,9 @@ inline bool url_parser::parse_host(url_serializer& urls, const CharT* first, con
         }
     }
 
+    if (!urls.is_special_scheme())
+        return parse_opaque_host(urls, first, last);
+
     // check if host has non ascii characters or percent sign
     bool has_no_ascii = false;
     bool has_escaped = false;