Mojo: request/response bindings

mojo/public/bindings/generators/mojom_cpp_generator.py

 # Copyright 2013 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 """Generates C++ source files from a mojom.Module."""
 
 from generate import mojom
 from generate import mojom_pack
 from generate import mojom_generator
 
@@ skipping 47 matching lines @@
   if isinstance(kind, (mojom.Struct, mojom.Enum)):
     return GetNameForKind(kind)
   if isinstance(kind, mojom.Array):
     return "mojo::Array<%s >" % GetCppArrayArgWrapperType(kind.kind)
   if isinstance(kind, mojom.Interface):
     return "mojo::Interface<%s>::Handle" % kind.name
   if kind.spec == 's':
     return "mojo::String"
   return _kind_to_cpp_type[kind]
 
+def GetCppResultWrapperType(kind):
+  if isinstance(kind, (mojom.Struct, mojom.Enum)):
+    return GetNameForKind(kind)
+  if isinstance(kind, mojom.Array):
+    return "mojo::Array<%s >" % GetCppArrayArgWrapperType(kind.kind)
+  if isinstance(kind, mojom.Interface):
+    return "mojo::Interface<%s>::ScopedHandle" % kind.name
+  if kind.spec == 's':
+    return "mojo::String"
+  if kind.spec == 'h':
+    return "mojo::ScopedHandle"
+  if kind.spec == 'h:d:c':
+    return "mojo::ScopedDataPipeConsumerHandle"
+  if kind.spec == 'h:d:p':
+    return "mojo::ScopedDataPipeProducerHandle"
+  if kind.spec == 'h:m':
+    return "mojo::ScopedMessagePipeHandle"
+  return _kind_to_cpp_type[kind]
+
 def GetCppWrapperType(kind):
   if isinstance(kind, (mojom.Struct, mojom.Enum)):
     return GetNameForKind(kind)
   if isinstance(kind, mojom.Array):
     return "mojo::Array<%s >" % GetCppArrayArgWrapperType(kind.kind)
   if isinstance(kind, mojom.Interface):
     return "mojo::Passable<typename mojo::Interface<%s>::Handle>" % kind.name
   if kind.spec == 's':
     return "mojo::String"
   if mojom_generator.IsHandleKind(kind):
@@ skipping 63 matching lines @@
       lambda token: TranslateConstants(token, module)))
 
 _HEADER_SIZE = 8
 
 class Generator(mojom_generator.Generator):
 
   cpp_filters = {
     "cpp_const_wrapper_type": GetCppConstWrapperType,
     "cpp_field_type": GetCppFieldType,
     "cpp_type": GetCppType,
+    "cpp_result_type": GetCppResultWrapperType,
     "cpp_wrapper_type": GetCppWrapperType,
     "expression_to_text": ExpressionToText,
     "get_pad": mojom_pack.GetPad,
     "is_enum_kind": mojom_generator.IsEnumKind,
     "is_handle_kind": mojom_generator.IsHandleKind,
     "is_object_kind": mojom_generator.IsObjectKind,
     "is_string_kind": mojom_generator.IsStringKind,
     "is_array_kind": lambda kind: isinstance(kind, mojom.Array),
     "is_struct_with_handles": IsStructWithHandles,
     "struct_size": lambda ps: ps.GetTotalSize() + _HEADER_SIZE,
     "struct_from_method": mojom_generator.GetStructFromMethod,
+    "response_struct_from_method": mojom_generator.GetResponseStructFromMethod,
     "stylize_method": mojom_generator.StudlyCapsToCamel,
     "verify_token_type": mojom_generator.VerifyTokenType,
   }
 
   def GetJinjaExports(self):
     return {
       "module": self.module,
       "namespace": self.module.namespace,
       "imports": self.module.imports,
       "kinds": self.module.kinds,
@@ skipping 12 matching lines @@
 
   @UseJinja("cpp_templates/module.cc.tmpl", filters=cpp_filters)
   def GenerateModuleSource(self):
     return self.GetJinjaExports()
 
   def GenerateFiles(self):
     self.Write(self.GenerateModuleHeader(), "%s.h" % self.module.name)
     self.Write(self.GenerateModuleInternalHeader(),
         "%s-internal.h" % self.module.name)
     self.Write(self.GenerateModuleSource(), "%s.cc" % self.module.name)