feat(eventsub): implement (shared-chat-)ban (#5985)

lib/twitch-eventsub-ws/ast/lib/member.py

@@ -55,12 +55,6 @@ def _is_trivially_copyable(type: clang.cindex.Type) -> bool:
     return _is_chrono_like_type(type)
 
 
-def _has_no_fields(type: clang.cindex.Type) -> bool:
-    for _ in type.get_fields():
-        return False
-    return True
-
-
 @dataclass
 class VariantType:
     name: str
@@ -179,7 +173,7 @@ class Member:
                 VariantType(
                     name=name,
                     trivial=_is_trivially_copyable(inner),
-                    empty=_has_no_fields(inner),
+                    empty=inner.get_size() <= 1,
                 )
             )
 

lib/twitch-eventsub-ws/ast/lib/struct.py

@@ -1,6 +1,6 @@
 from __future__ import annotations
 
-from typing import List
+from typing import List, Optional
 
 import logging
 
@@ -20,6 +20,7 @@ class Struct:
         self.comment_commands = CommentCommands()
         self.inner_root: str = ""
         self.namespace = namespace
+        self.base: Optional[str] = None
 
     @property
     def full_name(self) -> str:
@@ -48,3 +49,8 @@ class Struct:
 
     def apply_comment_commands(self, comment_commands: CommentCommands) -> None:
         self.inner_root = comment_commands.inner_root
+
+    def validate(self) -> None:
+        assert not (self.base and self.members), (
+            f"Unsupported: Struct {self.name} has both a base class as well as additional members"
+        )

lib/twitch-eventsub-ws/ast/lib/templates/struct-implementation.tmpl

@@ -1,5 +1,5 @@
 boost::json::result_for<{{struct.full_name}}, boost::json::value>::type tag_invoke(
-    boost::json::try_value_to_tag<{{struct.full_name}}> /* tag */, const boost::json::value &{%- if struct.members|length -%}jvRoot{%- else -%}/* jvRoot */{%- endif -%})
+    boost::json::try_value_to_tag<{{struct.full_name}}> /* tag */, const boost::json::value &{%- if struct.members|length or struct.base -%}jvRoot{%- else -%}/* jvRoot */{%- endif -%})
 {
     {% if struct.inner_root %}
     if (!jvRoot.is_object())
@@ -24,6 +24,12 @@ boost::json::result_for<{{struct.full_name}}, boost::json::value>::type tag_invo
         EVENTSUB_BAIL_HERE(error::Kind::ExpectedObject);
     }
     const auto &root = jvRoot.get_object();
+    {% elif struct.base %}
+    auto base = boost::json::try_value_to<{{struct.base}}>(jvRoot);
+    if (base.has_error())
+    {
+        return base.error();
+    }
     {% endif %}
 
 {% for field in struct.members %}
@@ -56,6 +62,9 @@ boost::json::result_for<{{struct.full_name}}, boost::json::value>::type tag_invo
         {%- elif field.member_type == MemberType.VARIANT -%}
         {% include 'initializer-variant.tmpl' indent content %}
         {%- endif -%}
-{% endfor %}
+{% endfor -%}
+{%- if struct.base %}
+        std::move(*base)
+{% endif -%}
     };
 }

lib/twitch-eventsub-ws/ast/lib/walker.py

@@ -36,6 +36,7 @@ class Walker:
                 for child in node.get_children():
                     self.handle_node(child, new_struct, None)
 
+                new_struct.validate()
                 self.structs.append(new_struct)
 
                 return True
@@ -83,6 +84,11 @@ class Walker:
                 self.namespace = self.namespace[:-1]
                 return True
 
+            case CursorKind.CXX_BASE_SPECIFIER:
+                assert struct
+                struct.base = node.type.spelling
+                return False
+
             case CursorKind.FUNCTION_DECL:
                 # Ignore function declarations
                 pass