Template parser supports namespaced attribute keys

CHANGELOG.md

@@ -23,6 +23,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - LVN Commands
 - LiveViewNative.Template.Engine
 - LiveViewNative.Component.Declarative
+- Template parser supports namespaced attribute keys
 
 ### Changed
 

lib/live_view_native/template/parser.ex

@@ -48,6 +48,7 @@ defmodule LiveViewNative.Template.Parser do
 
   @first_chars ~c"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"
   @chars ~c"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789_-"
+  @attribute_key @chars ++ ~c":"
   @whitespace ~c"\s\t\n\r"
   @entities [
     {?<, "&lt;"},
@@ -283,13 +284,13 @@ defmodule LiveViewNative.Template.Parser do
     parse_attribute_key(document, move_cursor(cursor, char), [char], args)
   end
 
-  defp parse_attribute_key(<<char, _document::binary>> = document, cursor, key_buffer, _args) when char not in @chars do
+  defp parse_attribute_key(<<char, _document::binary>> = document, cursor, key_buffer, _args) when char not in @attribute_key do
     key = List.to_string(key_buffer)
 
     {:ok, {document, key, cursor}}
   end
 
-  defp parse_attribute_key(<<char, document::binary>>, cursor, key_buffer, args) when char in @chars do
+  defp parse_attribute_key(<<char, document::binary>>, cursor, key_buffer, args) when char in @attribute_key do
     parse_attribute_key(document, move_cursor(cursor, char), [key_buffer, char], args)
   end
 

test/live_view_native/template/parser_test.exs

@@ -191,6 +191,18 @@ defmodule LiveViewNative.Template.ParserTest do
       end
     end
 
+    test "supports namespaced attribute name" do
+      {:ok, nodes} = """
+        <FooBar
+          a:b="123"></FooBar>
+        """
+        |> parse_document()
+
+      assert nodes == [
+        {"FooBar", [{"a:b", "123"}], []}
+      ]
+    end
+
     test "invalid attribute key name" do
       doc = """
         <FooBar