src: use const reference instead of pointer in URL::SerializeURL

Just some general cleanup to make things C++-y instead of C-y.

PR-URL: #41759
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: Tiancheng "Timothy" Gu <timothygu99@gmail.com>
Reviewed-By: Darshan Sen <raisinten@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Tobias Nießen <tniessen@tnie.de>
Reviewed-By: Daijiro Wachi <daijiro.wachi@gmail.com>

Author: addaleax

src/node_url.cc

@@ -1544,59 +1544,59 @@ void URL::Parse(const char* input,
 }  // NOLINT(readability/fn_size)
 
 // https://url.spec.whatwg.org/#url-serializing
-std::string URL::SerializeURL(const struct url_data* url,
+std::string URL::SerializeURL(const url_data& url,
                               bool exclude = false) {
   std::string output;
   output.reserve(
-    10 +
-    url->scheme.size() +
-    url->username.size() +
-    url->password.size() +
-    url->host.size() +
-    url->query.size() +
-    url->fragment.size() +
-    url->href.size() +
+    10 +  // We generally insert < 10 separator characters between URL parts
+    url.scheme.size() +
+    url.username.size() +
+    url.password.size() +
+    url.host.size() +
+    url.query.size() +
+    url.fragment.size() +
+    url.href.size() +
     std::accumulate(
-        url->path.begin(),
-        url->path.end(),
+        url.path.begin(),
+        url.path.end(),
         0,
         [](size_t sum, const auto& str) { return sum + str.size(); }));
 
-  output += url->scheme;
-  if (url->flags & URL_FLAGS_HAS_HOST) {
+  output += url.scheme;
+  if (url.flags & URL_FLAGS_HAS_HOST) {
     output += "//";
-    if (url->flags & URL_FLAGS_HAS_USERNAME ||
-        url->flags & URL_FLAGS_HAS_PASSWORD) {
-      if (url->flags & URL_FLAGS_HAS_USERNAME) {
-        output += url->username;
+    if (url.flags & URL_FLAGS_HAS_USERNAME ||
+        url.flags & URL_FLAGS_HAS_PASSWORD) {
+      if (url.flags & URL_FLAGS_HAS_USERNAME) {
+        output += url.username;
       }
-      if (url->flags & URL_FLAGS_HAS_PASSWORD) {
-        output += ":" + url->password;
+      if (url.flags & URL_FLAGS_HAS_PASSWORD) {
+        output += ":" + url.password;
       }
       output += "@";
     }
-    output += url->host;
-    if (url->port != -1) {
-      output += ":" + std::to_string(url->port);
+    output += url.host;
+    if (url.port != -1) {
+      output += ":" + std::to_string(url.port);
     }
   }
-  if (url->flags & URL_FLAGS_CANNOT_BE_BASE) {
-    output += url->path[0];
+  if (url.flags & URL_FLAGS_CANNOT_BE_BASE) {
+    output += url.path[0];
   } else {
-    if (!(url->flags & URL_FLAGS_HAS_HOST) &&
-          url->path.size() > 1 &&
-          url->path[0].empty()) {
+    if (!(url.flags & URL_FLAGS_HAS_HOST) &&
+          url.path.size() > 1 &&
+          url.path[0].empty()) {
       output += "/.";
     }
-    for (size_t i = 1; i < url->path.size(); i++) {
-      output += "/" + url->path[i];
+    for (size_t i = 1; i < url.path.size(); i++) {
+      output += "/" + url.path[i];
     }
   }
-  if (url->flags & URL_FLAGS_HAS_QUERY) {
-    output += "?" + url->query;
+  if (url.flags & URL_FLAGS_HAS_QUERY) {
+    output += "?" + url.query;
   }
-  if (!exclude && url->flags & URL_FLAGS_HAS_FRAGMENT) {
-    output += "#" + url->fragment;
+  if (!exclude && (url.flags & URL_FLAGS_HAS_FRAGMENT)) {
+    output += "#" + url.fragment;
   }
   output.shrink_to_fit();
   return output;

src/node_url.h

@@ -94,7 +94,7 @@ class URL {
                     const struct url_data* base,
                     bool has_base);
 
-  static std::string SerializeURL(const struct url_data* url, bool exclude);
+  static std::string SerializeURL(const url_data& url, bool exclude);
 
   URL(const char* input, const size_t len) {
     Parse(input, len, kUnknownState, &context_, false, nullptr, false);
@@ -174,7 +174,7 @@ class URL {
   }
 
   std::string href() const {
-    return SerializeURL(&context_, false);
+    return SerializeURL(context_, false);
   }
 
   // Get the path of the file: URL in a format consumable by native file system
@@ -193,7 +193,7 @@ class URL {
   URL() : URL("") {}
 
  private:
-  struct url_data context_;
+  url_data context_;
 };
 
 }  // namespace url