CodeGenerators: Use a HashMap for string to PropertyID lookups

Author: tcl3

Meta/Lagom/Tools/CodeGenerators/LibWeb/GenerateCSSPropertyID.cpp

@@ -444,8 +444,9 @@ ErrorOr<void> generate_implementation_file(JsonObject& properties, JsonObject& l
 
 namespace Web::CSS {
 
-Optional<PropertyID> property_id_from_camel_case_string(StringView string)
+static auto generate_camel_case_property_table()
 {
+    HashMap<StringView, PropertyID, CaseInsensitiveASCIIStringViewTraits> table;
 )~~~");
 
     properties.for_each_member([&](auto& name, auto& value) {
@@ -460,20 +461,24 @@ Optional<PropertyID> property_id_from_camel_case_string(StringView string)
             member_generator.set("name:titlecase", title_casify(name));
         }
         member_generator.append(R"~~~(
-    if (string.equals_ignoring_ascii_case("@name:camelcase@"sv))
-        return PropertyID::@name:titlecase@;
+    table.set("@name:camelcase@"sv, PropertyID::@name:titlecase@);
 )~~~");
     });
 
     generator.append(R"~~~(
-    return {};
+    return table;
 }
 
-Optional<PropertyID> property_id_from_string(StringView string)
+static HashMap<StringView, PropertyID, CaseInsensitiveASCIIStringViewTraits> const camel_case_properties_table = generate_camel_case_property_table();
+
+Optional<PropertyID> property_id_from_camel_case_string(StringView string)
 {
-    if (is_a_custom_property_name_string(string))
-        return PropertyID::Custom;
+    return camel_case_properties_table.get(string);
+}
 
+static auto generate_properties_table()
+{
+    HashMap<StringView, PropertyID, CaseInsensitiveASCIIStringViewTraits> table;
 )~~~");
 
     properties.for_each_member([&](auto& name, auto& value) {
@@ -487,13 +492,22 @@ Optional<PropertyID> property_id_from_string(StringView string)
             member_generator.set("name:titlecase", title_casify(name));
         }
         member_generator.append(R"~~~(
-    if (string.equals_ignoring_ascii_case("@name@"sv))
-        return PropertyID::@name:titlecase@;
+    table.set("@name@"sv, PropertyID::@name:titlecase@);
 )~~~");
     });
 
     generator.append(R"~~~(
-    return {};
+    return table;
+}
+
+static HashMap<StringView, PropertyID, CaseInsensitiveASCIIStringViewTraits> const properties_table = generate_properties_table();
+
+Optional<PropertyID> property_id_from_string(StringView string)
+{
+    if (is_a_custom_property_name_string(string))
+        return PropertyID::Custom;
+
+    return properties_table.get(string);
 }
 
 FlyString const& string_from_property_id(PropertyID property_id) {