generator: no type-setup for eventcopies anymore

_c_type_setup is not called for eventcopies anymore:
Reasons:
* the type-setup of an eventcopy would overwrite members of the original
  event object such as c_type, ...
* it is needed for the next patch, i.e., generating accessors:
  type_setup would create sizeof-etc funtions which called
  undefined accessor functions.

Sizeof-functions are generated for compatibility:
Reason:
* Type-setup of eventcopies has previously generated
  sizeof-functions for eventcopies.
  So, we still need to generate these functions.
  These new sizeof-functions simply call the sizeof-function
  of the defining event of the eventcopy.

Message-ID: <1409845851-38950-1-git-send-email-chris@demorecorder.com>
Patch-Thread-Subject: [Xcb] support popcount of a list and associated xml changes
Patch-Set: PopcountList
Patch-Number: libxcb 1/4
Patch-Version: V1
Signed-off-by: Christian Linhart <chris@DemoRecorder.com>

src/c_client.py

@@ -3075,7 +3075,14 @@ def c_event(self, name):
                 force_packed = any(f.type.size == 8 and f.type.is_simple for f in self.fields[(idx+1):])
                 break
 
-    _c_type_setup(self, name, ('event',))
+    if self.name == name:
+        _c_type_setup(self, name, ('event',))
+    else:
+        # no type-setup needed for eventcopies
+        # (the type-setup of an eventcopy would overwrite members of the original
+        # event, and it would create sizeof-etc funtions which
+        # called undefined accessor functions)
+        pass
 
     # Opcode define
     _c_opcode(name, self.opcodes[name])
@@ -3088,6 +3095,22 @@ def c_event(self, name):
         _h('')
         _h('typedef %s %s;', _t(self.name + ('event',)), _t(name + ('event',)))
 
+        # Create sizeof-function for eventcopies for compatibility reasons
+        if self.c_need_sizeof:
+            _h_setlevel(1)
+            _c_setlevel(1)
+            _h('')
+            _h('int')
+            _h('%s (const void  *_buffer  /**< */);', _n(name + ('sizeof',)))
+            _c('')
+            _c('int')
+            _c('%s (const void  *_buffer  /**< */)', _n(name + ('sizeof',)))
+            _c('{');
+            _c('    return %s(_buffer);', _n(self.name + ('sizeof',)))
+            _c('}');
+            _h_setlevel(0)
+            _c_setlevel(0)
+
     _man_event(self, name)
 
 def c_error(self, name):