1 /* 2 * 3 * Copyright 2015 gRPC authors. 4 * 5 * Licensed under the Apache License, Version 2.0 (the "License"); 6 * you may not use this file except in compliance with the License. 7 * You may obtain a copy of the License at 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 * 17 */ 18 19 #ifndef GRPC_INTERNAL_COMPILER_SCHEMA_INTERFACE_H 20 #define GRPC_INTERNAL_COMPILER_SCHEMA_INTERFACE_H 21 22 #include <memory> 23 #include <vector> 24 25 #include "src/compiler/config.h" 26 27 #ifndef GRPC_CUSTOM_STRING 28 # include <string> 29 # define GRPC_CUSTOM_STRING std::string 30 #endif 31 32 namespace grpc { 33 34 typedef GRPC_CUSTOM_STRING string; 35 36 } // namespace grpc 37 38 namespace grpc_generator { 39 40 // A common interface for objects having comments in the source. 41 // Return formatted comments to be inserted in generated code. 42 struct CommentHolder { ~CommentHolderCommentHolder43 virtual ~CommentHolder() {} 44 virtual grpc::string GetLeadingComments(const grpc::string prefix) const = 0; 45 virtual grpc::string GetTrailingComments(const grpc::string prefix) const = 0; 46 virtual std::vector<grpc::string> GetAllComments() const = 0; 47 }; 48 49 // An abstract interface representing a method. 50 struct Method : public CommentHolder { ~MethodMethod51 virtual ~Method() {} 52 53 virtual grpc::string name() const = 0; 54 55 virtual grpc::string input_type_name() const = 0; 56 virtual grpc::string output_type_name() const = 0; 57 58 virtual bool get_module_and_message_path_input( 59 grpc::string *str, grpc::string generator_file_name, 60 bool generate_in_pb2_grpc, grpc::string import_prefix) const = 0; 61 virtual bool get_module_and_message_path_output( 62 grpc::string *str, grpc::string generator_file_name, 63 bool generate_in_pb2_grpc, grpc::string import_prefix) const = 0; 64 65 virtual grpc::string get_input_type_name() const = 0; 66 virtual grpc::string get_output_type_name() const = 0; 67 68 virtual grpc::string get_fb_builder() const = 0; 69 70 virtual bool NoStreaming() const = 0; 71 virtual bool ClientStreaming() const = 0; 72 virtual bool ServerStreaming() const = 0; 73 virtual bool BidiStreaming() const = 0; 74 }; 75 76 // An abstract interface representing a service. 77 struct Service : public CommentHolder { ~ServiceService78 virtual ~Service() {} 79 80 virtual grpc::string name() const = 0; 81 82 virtual int method_count() const = 0; 83 virtual std::unique_ptr<const Method> method(int i) const = 0; 84 }; 85 86 struct Printer { ~PrinterPrinter87 virtual ~Printer() {} 88 89 virtual void Print(const std::map<grpc::string, grpc::string> &vars, 90 const char *template_string) = 0; 91 virtual void Print(const char *string) = 0; 92 virtual void Indent() = 0; 93 virtual void Outdent() = 0; 94 }; 95 96 // An interface that allows the source generated to be output using various 97 // libraries/idls/serializers. 98 struct File : public CommentHolder { ~FileFile99 virtual ~File() {} 100 101 virtual grpc::string filename() const = 0; 102 virtual grpc::string filename_without_ext() const = 0; 103 virtual grpc::string package() const = 0; 104 virtual std::vector<grpc::string> package_parts() const = 0; 105 virtual grpc::string additional_headers() const = 0; 106 107 virtual int service_count() const = 0; 108 virtual std::unique_ptr<const Service> service(int i) const = 0; 109 110 virtual std::unique_ptr<Printer> CreatePrinter(grpc::string *str) const = 0; 111 }; 112 } // namespace grpc_generator 113 114 #endif // GRPC_INTERNAL_COMPILER_SCHEMA_INTERFACE_H 115