Get rid of the patched/ module

This may fix #1669.

.gitignore

@@ -1,7 +1,6 @@
 # Generated code
 /telethon/tl/functions/
 /telethon/tl/types/
-/telethon/tl/patched/
 /telethon/tl/alltlobjects.py
 /telethon/errors/rpcerrorlist.py
 

telethon/tl/custom/message.py

@@ -1,16 +1,15 @@
-import abc
 from .chatgetter import ChatGetter
 from .sendergetter import SenderGetter
 from .messagebutton import MessageButton
 from .forward import Forward
 from .file import File
-from .. import TLObject, types, functions
+from .. import TLObject, types, functions, alltlobjects
 from ... import utils, errors
 
 
 # TODO Figure out a way to have the code generator error on missing fields
 # Maybe parsing the init function alone if that's possible.
-class Message(ChatGetter, SenderGetter, TLObject, abc.ABC):
+class _Message(ChatGetter, SenderGetter):
     """
     This custom class aggregates both :tl:`Message` and
     :tl:`MessageService` to ease accessing their members.
@@ -1105,3 +1104,18 @@ class Message(ChatGetter, SenderGetter, TLObject, abc.ABC):
                     return None
 
     # endregion Private Methods
+
+def _patch(cls):
+    # Create new types (classes) for all messages to combine `_Message` in them.
+    # `_Message` comes first so we get its `__init__`.
+    newtype = type(cls.__name__, (_Message, cls), {})
+    setattr(types, cls.__name__, newtype)
+    # `BinaryReader` directly imports this dictionary, but we're mutating it
+    # in-place, not replacing it, so it works out to deserialize `newtype`.
+    alltlobjects.tlobjects[cls.CONSTRUCTOR_ID] = newtype
+    return newtype
+
+
+_patch(types.MessageEmpty)
+Message = _patch(types.Message)
+_patch(types.MessageService)

telethon_generator/generators/tlobject.py

@@ -50,13 +50,6 @@ NAMED_BLACKLIST = {
 BASE_TYPES = ('string', 'bytes', 'int', 'long', 'int128',
               'int256', 'double', 'Bool', 'true', 'date')
 
-# Patched types {fullname: custom.ns.Name}
-PATCHED_TYPES = {
-    'messageEmpty': 'message.Message',
-    'message': 'message.Message',
-    'messageService': 'message.Message'
-}
-
 
 def _write_modules(
         out_dir, depth, kind, namespace_tlobjects, type_constructors):
@@ -157,11 +150,8 @@ def _write_modules(
 
             # Generate the class for every TLObject
             for t in tlobjects:
-                if t.fullname in PATCHED_TYPES:
+                _write_source_code(t, kind, builder, type_constructors)
-                    builder.writeln('{} = None  # Patched', t.class_name)
+                builder.current_indent = 0
-                else:
-                    _write_source_code(t, kind, builder, type_constructors)
-                    builder.current_indent = 0
 
             # Write the type definitions generated earlier.
             builder.writeln()
@@ -645,41 +635,11 @@ def _write_arg_read_code(builder, arg, args, name):
         arg.is_flag = True
 
 
-def _write_patched(out_dir, namespace_tlobjects):
-    out_dir.mkdir(parents=True, exist_ok=True)
-    for ns, tlobjects in namespace_tlobjects.items():
-        file = out_dir / '{}.py'.format(ns or '__init__')
-        with file.open('w') as f, SourceBuilder(f) as builder:
-            builder.writeln(AUTO_GEN_NOTICE)
-
-            builder.writeln('import struct')
-            builder.writeln('from .. import TLObject, types, custom')
-            builder.writeln()
-            for t in tlobjects:
-                builder.writeln('class {}(custom.{}):', t.class_name,
-                                PATCHED_TYPES[t.fullname])
-
-                builder.writeln('CONSTRUCTOR_ID = {:#x}', t.id)
-                builder.writeln('SUBCLASS_OF_ID = {:#x}',
-                                crc32(t.result.encode('ascii')))
-
-                _write_to_dict(t, builder)
-                _write_to_bytes(t, builder)
-                _write_from_reader(t, builder)
-                builder.current_indent = 0
-                builder.writeln()
-                builder.writeln(
-                    'types.{1}{0} = {0}', t.class_name,
-                    '{}.'.format(t.namespace) if t.namespace else ''
-                )
-                builder.writeln()
-
-
 def _write_all_tlobjects(tlobjects, layer, builder):
     builder.writeln(AUTO_GEN_NOTICE)
     builder.writeln()
 
-    builder.writeln('from . import types, functions, patched')
+    builder.writeln('from . import types, functions')
     builder.writeln()
 
     # Create a constant variable to indicate which layer this is
@@ -693,11 +653,7 @@ def _write_all_tlobjects(tlobjects, layer, builder):
     # Fill the dictionary (0x1a2b3c4f: tl.full.type.path.Class)
     for tlobject in tlobjects:
         builder.write('{:#010x}: ', tlobject.id)
-        # TODO Probably circular dependency
+        builder.write('functions' if tlobject.is_function else 'types')
-        if tlobject.fullname in PATCHED_TYPES:
-            builder.write('patched')
-        else:
-            builder.write('functions' if tlobject.is_function else 'types')
 
         if tlobject.namespace:
             builder.write('.{}', tlobject.namespace)
@@ -712,7 +668,6 @@ def generate_tlobjects(tlobjects, layer, import_depth, output_dir):
     # Group everything by {namespace: [tlobjects]} to generate __init__.py
     namespace_functions = defaultdict(list)
     namespace_types = defaultdict(list)
-    namespace_patched = defaultdict(list)
 
     # Group {type: [constructors]} to generate the documentation
     type_constructors = defaultdict(list)
@@ -722,14 +677,11 @@ def generate_tlobjects(tlobjects, layer, import_depth, output_dir):
         else:
             namespace_types[tlobject.namespace].append(tlobject)
             type_constructors[tlobject.result].append(tlobject)
-            if tlobject.fullname in PATCHED_TYPES:
-                namespace_patched[tlobject.namespace].append(tlobject)
 
     _write_modules(output_dir / 'functions', import_depth, 'TLRequest',
                    namespace_functions, type_constructors)
     _write_modules(output_dir / 'types', import_depth, 'TLObject',
                    namespace_types, type_constructors)
-    _write_patched(output_dir / 'patched', namespace_patched)
 
     filename = output_dir / 'alltlobjects.py'
     with filename.open('w') as file:
@@ -738,7 +690,7 @@ def generate_tlobjects(tlobjects, layer, import_depth, output_dir):
 
 
 def clean_tlobjects(output_dir):
-    for d in ('functions', 'types', 'patched'):
+    for d in ('functions', 'types'):
         d = output_dir / d
         if d.is_dir():
             shutil.rmtree(str(d))