add the op def proto, test=develop (#33098)

* add the op def proto, test=develop

* add while.pbtxt

paddle/fluid/framework/CMakeLists.txt

@@ -27,6 +27,7 @@ add_subdirectory(fleet)
 add_subdirectory(io)
 #ddim lib
 proto_library(framework_proto SRCS framework.proto)
+proto_library(op_def_proto SRCS op_def.proto)
 proto_library(heter_service_proto SRCS heter_service.proto)
 proto_library(data_feed_proto SRCS data_feed.proto)
 proto_library(trainer_desc_proto SRCS trainer_desc.proto DEPS framework_proto

paddle/fluid/framework/op_def.proto

@@ -0,0 +1,43 @@
+/* Copyright (c) 2021 PaddlePaddle Authors. All Rights Reserved.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License. */
+
+syntax = "proto2";
+
+import "framework.proto";
+package paddle.framework.proto;
+
+message OpDef {
+
+  message VarDef {
+    required string name = 1;
+
+    // For the type of input / output variables.
+    reserved 2;
+  }
+
+  message AttrDef {
+    required string name = 1;
+    required AttrType type = 2;
+  }
+
+  message Desc {
+    repeated VarDef inputs = 1;
+    repeated VarDef outputs = 2;
+    repeated AttrDef attrs = 3;
+  }
+
+  required string type = 1;
+  required Desc def = 2;
+  optional Desc extra = 3;
+}

paddle/fluid/operators/compat/while.pbtxt

@@ -0,0 +1,49 @@
+type: "while"
+def {
+  inputs {
+    name: "X"
+  }
+  inputs {
+    name: "Condition"
+  }
+  outputs {
+    name: "Out"
+  }
+  outputs {
+    name: "StepScopes"
+  }
+  attrs {
+    name: "sub_block"
+    type: BLOCK
+  }
+}
+extra {
+  attrs {
+    name: "is_test"
+    type: BOOLEAN
+  }
+  attrs {
+    name: "skip_eager_deletion_vars"
+    type: STRINGS
+  }
+  attrs {
+    name: "op_role"
+    type: INT
+  }
+  attrs {
+    name: "op_role_var"
+    type: STRINGS
+  }
+  attrs {
+    name: "op_namescope"
+    type: STRING
+  }
+  attrs {
+    name: "op_callstack"
+    type: STRINGS
+  }
+  attrs {
+    name: "op_device"
+    type: STRING
+  }
+}