| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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. |
| * |
| * Contains some contributions under the Thrift Software License. |
| * Please see doc/old-thrift-license.txt in the Thrift distribution for |
| * details. |
| */ |
| |
| #include <cassert> |
| |
| #include <fstream> |
| #include <iostream> |
| #include <sstream> |
| #include <string> |
| #include <vector> |
| |
| #include <sys/stat.h> |
| |
| #include "platform.h" |
| #include "t_oop_generator.h" |
| using namespace std; |
| |
| |
| /** |
| * C++ code generator. This is legitimacy incarnate. |
| * |
| */ |
| class t_cpp_generator : public t_oop_generator { |
| public: |
| t_cpp_generator( |
| t_program* program, |
| const std::map<std::string, std::string>& parsed_options, |
| const std::string& option_string) |
| : t_oop_generator(program) |
| { |
| (void) option_string; |
| std::map<std::string, std::string>::const_iterator iter; |
| |
| iter = parsed_options.find("pure_enums"); |
| gen_pure_enums_ = (iter != parsed_options.end()); |
| |
| iter = parsed_options.find("dense"); |
| gen_dense_ = (iter != parsed_options.end()); |
| |
| iter = parsed_options.find("include_prefix"); |
| use_include_prefix_ = (iter != parsed_options.end()); |
| |
| iter = parsed_options.find("cob_style"); |
| gen_cob_style_ = (iter != parsed_options.end()); |
| |
| iter = parsed_options.find("no_client_completion"); |
| gen_no_client_completion_ = (iter != parsed_options.end()); |
| |
| iter = parsed_options.find("templates"); |
| gen_templates_ = (iter != parsed_options.end()); |
| |
| out_dir_base_ = "gen-cpp"; |
| } |
| |
| /** |
| * Init and close methods |
| */ |
| |
| void init_generator(); |
| void close_generator(); |
| |
| void generate_consts(std::vector<t_const*> consts); |
| |
| /** |
| * Program-level generation functions |
| */ |
| |
| void generate_typedef(t_typedef* ttypedef); |
| void generate_enum(t_enum* tenum); |
| void generate_struct(t_struct* tstruct) { |
| generate_cpp_struct(tstruct, false); |
| } |
| void generate_xception(t_struct* txception) { |
| generate_cpp_struct(txception, true); |
| } |
| void generate_cpp_struct(t_struct* tstruct, bool is_exception); |
| |
| void generate_service(t_service* tservice); |
| |
| void print_const_value(std::ofstream& out, std::string name, t_type* type, t_const_value* value); |
| std::string render_const_value(std::ofstream& out, std::string name, t_type* type, t_const_value* value); |
| |
| void generate_struct_definition (std::ofstream& out, t_struct* tstruct, bool is_exception=false, bool pointers=false, bool read=true, bool write=true); |
| void generate_struct_fingerprint (std::ofstream& out, t_struct* tstruct, bool is_definition); |
| void generate_struct_reader (std::ofstream& out, t_struct* tstruct, bool pointers=false); |
| void generate_struct_writer (std::ofstream& out, t_struct* tstruct, bool pointers=false); |
| void generate_struct_result_writer (std::ofstream& out, t_struct* tstruct, bool pointers=false); |
| |
| /** |
| * Service-level generation functions |
| */ |
| |
| void generate_service_interface (t_service* tservice, string style); |
| void generate_service_null (t_service* tservice, string style); |
| void generate_service_multiface (t_service* tservice); |
| void generate_service_helpers (t_service* tservice); |
| void generate_service_client (t_service* tservice, string style); |
| void generate_service_processor (t_service* tservice, string style); |
| void generate_service_skeleton (t_service* tservice); |
| void generate_process_function (t_service* tservice, t_function* tfunction, |
| string style, bool specialized=false); |
| void generate_function_helpers (t_service* tservice, t_function* tfunction); |
| void generate_service_async_skeleton (t_service* tservice); |
| |
| /** |
| * Serialization constructs |
| */ |
| |
| void generate_deserialize_field (std::ofstream& out, |
| t_field* tfield, |
| std::string prefix="", |
| std::string suffix=""); |
| |
| void generate_deserialize_struct (std::ofstream& out, |
| t_struct* tstruct, |
| std::string prefix=""); |
| |
| void generate_deserialize_container (std::ofstream& out, |
| t_type* ttype, |
| std::string prefix=""); |
| |
| void generate_deserialize_set_element (std::ofstream& out, |
| t_set* tset, |
| std::string prefix=""); |
| |
| void generate_deserialize_map_element (std::ofstream& out, |
| t_map* tmap, |
| std::string prefix=""); |
| |
| void generate_deserialize_list_element (std::ofstream& out, |
| t_list* tlist, |
| std::string prefix, |
| bool push_back, |
| std::string index); |
| |
| void generate_serialize_field (std::ofstream& out, |
| t_field* tfield, |
| std::string prefix="", |
| std::string suffix=""); |
| |
| void generate_serialize_struct (std::ofstream& out, |
| t_struct* tstruct, |
| std::string prefix=""); |
| |
| void generate_serialize_container (std::ofstream& out, |
| t_type* ttype, |
| std::string prefix=""); |
| |
| void generate_serialize_map_element (std::ofstream& out, |
| t_map* tmap, |
| std::string iter); |
| |
| void generate_serialize_set_element (std::ofstream& out, |
| t_set* tmap, |
| std::string iter); |
| |
| void generate_serialize_list_element (std::ofstream& out, |
| t_list* tlist, |
| std::string iter); |
| |
| void generate_function_call (ostream& out, |
| t_function* tfunction, |
| string target, |
| string iface, |
| string arg_prefix); |
| /* |
| * Helper rendering functions |
| */ |
| |
| std::string namespace_prefix(std::string ns); |
| std::string namespace_open(std::string ns); |
| std::string namespace_close(std::string ns); |
| std::string type_name(t_type* ttype, bool in_typedef=false, bool arg=false); |
| std::string base_type_name(t_base_type::t_base tbase); |
| std::string declare_field(t_field* tfield, bool init=false, bool pointer=false, bool constant=false, bool reference=false); |
| std::string function_signature(t_function* tfunction, std::string style, std::string prefix="", bool name_params=true); |
| std::string cob_function_signature(t_function* tfunction, std::string prefix="", bool name_params=true); |
| std::string argument_list(t_struct* tstruct, bool name_params=true, bool start_comma=false); |
| std::string type_to_enum(t_type* ttype); |
| std::string local_reflection_name(const char*, t_type* ttype, bool external=false); |
| |
| void generate_enum_constant_list(std::ofstream& f, |
| const vector<t_enum_value*>& constants, |
| const char* prefix, |
| const char* suffix, |
| bool include_values); |
| |
| // These handles checking gen_dense_ and checking for duplicates. |
| void generate_local_reflection(std::ofstream& out, t_type* ttype, bool is_definition); |
| void generate_local_reflection_pointer(std::ofstream& out, t_type* ttype); |
| |
| bool is_complex_type(t_type* ttype) { |
| ttype = get_true_type(ttype); |
| |
| return |
| ttype->is_container() || |
| ttype->is_struct() || |
| ttype->is_xception() || |
| (ttype->is_base_type() && (((t_base_type*)ttype)->get_base() == t_base_type::TYPE_STRING)); |
| } |
| |
| void set_use_include_prefix(bool use_include_prefix) { |
| use_include_prefix_ = use_include_prefix; |
| } |
| |
| private: |
| /** |
| * Returns the include prefix to use for a file generated by program, or the |
| * empty string if no include prefix should be used. |
| */ |
| std::string get_include_prefix(const t_program& program) const; |
| |
| /** |
| * True if we should generate pure enums for Thrift enums, instead of wrapper classes. |
| */ |
| bool gen_pure_enums_; |
| |
| /** |
| * True if we should generate local reflection metadata for TDenseProtocol. |
| */ |
| bool gen_dense_; |
| |
| /** |
| * True if we should generate templatized reader/writer methods. |
| */ |
| bool gen_templates_; |
| |
| /** |
| * True if we should use a path prefix in our #include statements for other |
| * thrift-generated header files. |
| */ |
| bool use_include_prefix_; |
| |
| /** |
| * True if we should generate "Continuation OBject"-style classes as well. |
| */ |
| bool gen_cob_style_; |
| |
| /** |
| * True if we should omit calls to completion__() in CobClient class. |
| */ |
| bool gen_no_client_completion_; |
| |
| /** |
| * Strings for namespace, computed once up front then used directly |
| */ |
| |
| std::string ns_open_; |
| std::string ns_close_; |
| |
| /** |
| * File streams, stored here to avoid passing them as parameters to every |
| * function. |
| */ |
| |
| std::ofstream f_types_; |
| std::ofstream f_types_impl_; |
| std::ofstream f_types_tcc_; |
| std::ofstream f_header_; |
| std::ofstream f_service_; |
| std::ofstream f_service_tcc_; |
| |
| /** |
| * When generating local reflections, make sure we don't generate duplicates. |
| */ |
| std::set<std::string> reflected_fingerprints_; |
| }; |
| |
| /** |
| * Prepares for file generation by opening up the necessary file output |
| * streams. |
| */ |
| void t_cpp_generator::init_generator() { |
| // Make output directory |
| MKDIR(get_out_dir().c_str()); |
| |
| // Make output file |
| string f_types_name = get_out_dir()+program_name_+"_types.h"; |
| f_types_.open(f_types_name.c_str()); |
| |
| string f_types_impl_name = get_out_dir()+program_name_+"_types.cpp"; |
| f_types_impl_.open(f_types_impl_name.c_str()); |
| |
| if (gen_templates_) { |
| // If we don't open the stream, it appears to just discard data, |
| // which is fine. |
| string f_types_tcc_name = get_out_dir()+program_name_+"_types.tcc"; |
| f_types_tcc_.open(f_types_tcc_name.c_str()); |
| } |
| |
| // Print header |
| f_types_ << |
| autogen_comment(); |
| f_types_impl_ << |
| autogen_comment(); |
| f_types_tcc_ << |
| autogen_comment(); |
| |
| // Start ifndef |
| f_types_ << |
| "#ifndef " << program_name_ << "_TYPES_H" << endl << |
| "#define " << program_name_ << "_TYPES_H" << endl << |
| endl; |
| f_types_tcc_ << |
| "#ifndef " << program_name_ << "_TYPES_TCC" << endl << |
| "#define " << program_name_ << "_TYPES_TCC" << endl << |
| endl; |
| |
| // Include base types |
| f_types_ << |
| "#include <Thrift.h>" << endl << |
| "#include <TApplicationException.h>" << endl << |
| "#include <protocol/TProtocol.h>" << endl << |
| "#include <transport/TTransport.h>" << endl << |
| endl; |
| |
| // Include other Thrift includes |
| const vector<t_program*>& includes = program_->get_includes(); |
| for (size_t i = 0; i < includes.size(); ++i) { |
| f_types_ << |
| "#include \"" << get_include_prefix(*(includes[i])) << |
| includes[i]->get_name() << "_types.h\"" << endl; |
| |
| // XXX(simpkins): If gen_templates_ is enabled, we currently assume all |
| // included files were also generated with templates enabled. |
| f_types_tcc_ << |
| "#include \"" << get_include_prefix(*(includes[i])) << |
| includes[i]->get_name() << "_types.tcc\"" << endl; |
| } |
| f_types_ << endl; |
| |
| // Include custom headers |
| const vector<string>& cpp_includes = program_->get_cpp_includes(); |
| for (size_t i = 0; i < cpp_includes.size(); ++i) { |
| if (cpp_includes[i][0] == '<') { |
| f_types_ << |
| "#include " << cpp_includes[i] << endl; |
| } else { |
| f_types_ << |
| "#include \"" << cpp_includes[i] << "\"" << endl; |
| } |
| } |
| f_types_ << |
| endl; |
| |
| // Include the types file |
| f_types_impl_ << |
| "#include \"" << get_include_prefix(*get_program()) << program_name_ << |
| "_types.h\"" << endl << |
| endl; |
| f_types_tcc_ << |
| "#include \"" << get_include_prefix(*get_program()) << program_name_ << |
| "_types.h\"" << endl << |
| endl; |
| |
| // If we are generating local reflection metadata, we need to include |
| // the definition of TypeSpec. |
| if (gen_dense_) { |
| f_types_impl_ << |
| "#include <TReflectionLocal.h>" << endl << |
| endl; |
| } |
| |
| // Open namespace |
| ns_open_ = namespace_open(program_->get_namespace("cpp")); |
| ns_close_ = namespace_close(program_->get_namespace("cpp")); |
| |
| f_types_ << |
| ns_open_ << endl << |
| endl; |
| |
| f_types_impl_ << |
| ns_open_ << endl << |
| endl; |
| |
| f_types_tcc_ << |
| ns_open_ << endl << |
| endl; |
| } |
| |
| /** |
| * Closes the output files. |
| */ |
| void t_cpp_generator::close_generator() { |
| // Close namespace |
| f_types_ << |
| ns_close_ << endl << |
| endl; |
| f_types_impl_ << |
| ns_close_ << endl; |
| f_types_tcc_ << |
| ns_close_ << endl << |
| endl; |
| |
| // Include the types.tcc file from the types header file, |
| // so clients don't have to explicitly include the tcc file. |
| // TODO(simpkins): Make this a separate option. |
| if (gen_templates_) { |
| f_types_ << |
| "#include \"" << get_include_prefix(*get_program()) << program_name_ << |
| "_types.tcc\"" << endl << |
| endl; |
| } |
| |
| // Close ifndef |
| f_types_ << |
| "#endif" << endl; |
| f_types_tcc_ << |
| "#endif" << endl; |
| |
| // Close output file |
| f_types_.close(); |
| f_types_impl_.close(); |
| f_types_tcc_.close(); |
| } |
| |
| /** |
| * Generates a typedef. This is just a simple 1-liner in C++ |
| * |
| * @param ttypedef The type definition |
| */ |
| void t_cpp_generator::generate_typedef(t_typedef* ttypedef) { |
| f_types_ << |
| indent() << "typedef " << type_name(ttypedef->get_type(), true) << " " << ttypedef->get_symbolic() << ";" << endl << |
| endl; |
| } |
| |
| |
| void t_cpp_generator::generate_enum_constant_list(std::ofstream& f, |
| const vector<t_enum_value*>& constants, |
| const char* prefix, |
| const char* suffix, |
| bool include_values) { |
| f << " {" << endl; |
| indent_up(); |
| |
| vector<t_enum_value*>::const_iterator c_iter; |
| bool first = true; |
| for (c_iter = constants.begin(); c_iter != constants.end(); ++c_iter) { |
| if (first) { |
| first = false; |
| } else { |
| f << "," << endl; |
| } |
| indent(f) |
| << prefix << (*c_iter)->get_name() << suffix; |
| if (include_values && (*c_iter)->has_value()) { |
| f << " = " << (*c_iter)->get_value(); |
| } |
| } |
| |
| f << endl; |
| indent_down(); |
| indent(f) << "};" << endl; |
| } |
| |
| /** |
| * Generates code for an enumerated type. In C++, this is essentially the same |
| * as the thrift definition itself, using the enum keyword in C++. |
| * |
| * @param tenum The enumeration |
| */ |
| void t_cpp_generator::generate_enum(t_enum* tenum) { |
| vector<t_enum_value*> constants = tenum->get_constants(); |
| |
| std::string enum_name = tenum->get_name(); |
| if (!gen_pure_enums_) { |
| enum_name = "type"; |
| f_types_ << |
| indent() << "struct " << tenum->get_name() << " {" << endl; |
| indent_up(); |
| } |
| f_types_ << |
| indent() << "enum " << enum_name; |
| |
| generate_enum_constant_list(f_types_, constants, "", "", true); |
| |
| if (!gen_pure_enums_) { |
| indent_down(); |
| f_types_ << "};" << endl; |
| } |
| |
| f_types_ << endl; |
| |
| /** |
| Generate a character array of enum names for debugging purposes. |
| */ |
| std::string prefix = ""; |
| if (!gen_pure_enums_) { |
| prefix = tenum->get_name() + "::"; |
| } |
| |
| f_types_impl_ << |
| indent() << "int _k" << tenum->get_name() << "Values[] ="; |
| generate_enum_constant_list(f_types_impl_, constants, prefix.c_str(), "", false); |
| |
| f_types_impl_ << |
| indent() << "const char* _k" << tenum->get_name() << "Names[] ="; |
| generate_enum_constant_list(f_types_impl_, constants, "\"", "\"", false); |
| |
| f_types_ << |
| indent() << "extern const std::map<int, const char*> _" << |
| tenum->get_name() << "_VALUES_TO_NAMES;" << endl << endl; |
| |
| f_types_impl_ << |
| indent() << "const std::map<int, const char*> _" << tenum->get_name() << |
| "_VALUES_TO_NAMES(::apache::thrift::TEnumIterator(" << constants.size() << |
| ", _k" << tenum->get_name() << "Values" << |
| ", _k" << tenum->get_name() << "Names), " << |
| "::apache::thrift::TEnumIterator(-1, NULL, NULL));" << endl << endl; |
| |
| generate_local_reflection(f_types_, tenum, false); |
| generate_local_reflection(f_types_impl_, tenum, true); |
| } |
| |
| /** |
| * Generates a class that holds all the constants. |
| */ |
| void t_cpp_generator::generate_consts(std::vector<t_const*> consts) { |
| string f_consts_name = get_out_dir()+program_name_+"_constants.h"; |
| ofstream f_consts; |
| f_consts.open(f_consts_name.c_str()); |
| |
| string f_consts_impl_name = get_out_dir()+program_name_+"_constants.cpp"; |
| ofstream f_consts_impl; |
| f_consts_impl.open(f_consts_impl_name.c_str()); |
| |
| // Print header |
| f_consts << |
| autogen_comment(); |
| f_consts_impl << |
| autogen_comment(); |
| |
| // Start ifndef |
| f_consts << |
| "#ifndef " << program_name_ << "_CONSTANTS_H" << endl << |
| "#define " << program_name_ << "_CONSTANTS_H" << endl << |
| endl << |
| "#include \"" << get_include_prefix(*get_program()) << program_name_ << |
| "_types.h\"" << endl << |
| endl << |
| ns_open_ << endl << |
| endl; |
| |
| f_consts_impl << |
| "#include \"" << get_include_prefix(*get_program()) << program_name_ << |
| "_constants.h\"" << endl << |
| endl << |
| ns_open_ << endl << |
| endl; |
| |
| f_consts << |
| "class " << program_name_ << "Constants {" << endl << |
| " public:" << endl << |
| " " << program_name_ << "Constants();" << endl << |
| endl; |
| indent_up(); |
| vector<t_const*>::iterator c_iter; |
| for (c_iter = consts.begin(); c_iter != consts.end(); ++c_iter) { |
| string name = (*c_iter)->get_name(); |
| t_type* type = (*c_iter)->get_type(); |
| f_consts << |
| indent() << type_name(type) << " " << name << ";" << endl; |
| } |
| indent_down(); |
| f_consts << |
| "};" << endl; |
| |
| f_consts_impl << |
| "const " << program_name_ << "Constants g_" << program_name_ << "_constants;" << endl << |
| endl << |
| program_name_ << "Constants::" << program_name_ << "Constants() {" << endl; |
| indent_up(); |
| for (c_iter = consts.begin(); c_iter != consts.end(); ++c_iter) { |
| print_const_value(f_consts_impl, |
| (*c_iter)->get_name(), |
| (*c_iter)->get_type(), |
| (*c_iter)->get_value()); |
| } |
| indent_down(); |
| indent(f_consts_impl) << |
| "}" << endl; |
| |
| f_consts << |
| endl << |
| "extern const " << program_name_ << "Constants g_" << program_name_ << "_constants;" << endl << |
| endl << |
| ns_close_ << endl << |
| endl << |
| "#endif" << endl; |
| f_consts.close(); |
| |
| f_consts_impl << |
| endl << |
| ns_close_ << endl << |
| endl; |
| } |
| |
| /** |
| * Prints the value of a constant with the given type. Note that type checking |
| * is NOT performed in this function as it is always run beforehand using the |
| * validate_types method in main.cc |
| */ |
| void t_cpp_generator::print_const_value(ofstream& out, string name, t_type* type, t_const_value* value) { |
| type = get_true_type(type); |
| if (type->is_base_type()) { |
| string v2 = render_const_value(out, name, type, value); |
| indent(out) << name << " = " << v2 << ";" << endl << |
| endl; |
| } else if (type->is_enum()) { |
| indent(out) << name << " = (" << type_name(type) << ")" << value->get_integer() << ";" << endl << |
| endl; |
| } else if (type->is_struct() || type->is_xception()) { |
| const vector<t_field*>& fields = ((t_struct*)type)->get_members(); |
| vector<t_field*>::const_iterator f_iter; |
| const map<t_const_value*, t_const_value*>& val = value->get_map(); |
| map<t_const_value*, t_const_value*>::const_iterator v_iter; |
| for (v_iter = val.begin(); v_iter != val.end(); ++v_iter) { |
| t_type* field_type = NULL; |
| for (f_iter = fields.begin(); f_iter != fields.end(); ++f_iter) { |
| if ((*f_iter)->get_name() == v_iter->first->get_string()) { |
| field_type = (*f_iter)->get_type(); |
| } |
| } |
| if (field_type == NULL) { |
| throw "type error: " + type->get_name() + " has no field " + v_iter->first->get_string(); |
| } |
| string val = render_const_value(out, name, field_type, v_iter->second); |
| indent(out) << name << "." << v_iter->first->get_string() << " = " << val << ";" << endl; |
| indent(out) << name << ".__isset." << v_iter->first->get_string() << " = true;" << endl; |
| } |
| out << endl; |
| } else if (type->is_map()) { |
| t_type* ktype = ((t_map*)type)->get_key_type(); |
| t_type* vtype = ((t_map*)type)->get_val_type(); |
| const map<t_const_value*, t_const_value*>& val = value->get_map(); |
| map<t_const_value*, t_const_value*>::const_iterator v_iter; |
| for (v_iter = val.begin(); v_iter != val.end(); ++v_iter) { |
| string key = render_const_value(out, name, ktype, v_iter->first); |
| string val = render_const_value(out, name, vtype, v_iter->second); |
| indent(out) << name << ".insert(std::make_pair(" << key << ", " << val << "));" << endl; |
| } |
| out << endl; |
| } else if (type->is_list()) { |
| t_type* etype = ((t_list*)type)->get_elem_type(); |
| const vector<t_const_value*>& val = value->get_list(); |
| vector<t_const_value*>::const_iterator v_iter; |
| for (v_iter = val.begin(); v_iter != val.end(); ++v_iter) { |
| string val = render_const_value(out, name, etype, *v_iter); |
| indent(out) << name << ".push_back(" << val << ");" << endl; |
| } |
| out << endl; |
| } else if (type->is_set()) { |
| t_type* etype = ((t_set*)type)->get_elem_type(); |
| const vector<t_const_value*>& val = value->get_list(); |
| vector<t_const_value*>::const_iterator v_iter; |
| for (v_iter = val.begin(); v_iter != val.end(); ++v_iter) { |
| string val = render_const_value(out, name, etype, *v_iter); |
| indent(out) << name << ".insert(" << val << ");" << endl; |
| } |
| out << endl; |
| } else { |
| throw "INVALID TYPE IN print_const_value: " + type->get_name(); |
| } |
| } |
| |
| /** |
| * |
| */ |
| string t_cpp_generator::render_const_value(ofstream& out, string name, t_type* type, t_const_value* value) { |
| (void) name; |
| std::ostringstream render; |
| |
| if (type->is_base_type()) { |
| t_base_type::t_base tbase = ((t_base_type*)type)->get_base(); |
| switch (tbase) { |
| case t_base_type::TYPE_STRING: |
| render << '"' << get_escaped_string(value) << '"'; |
| break; |
| case t_base_type::TYPE_BOOL: |
| render << ((value->get_integer() > 0) ? "true" : "false"); |
| break; |
| case t_base_type::TYPE_BYTE: |
| case t_base_type::TYPE_I16: |
| case t_base_type::TYPE_I32: |
| render << value->get_integer(); |
| break; |
| case t_base_type::TYPE_I64: |
| render << value->get_integer() << "LL"; |
| break; |
| case t_base_type::TYPE_DOUBLE: |
| if (value->get_type() == t_const_value::CV_INTEGER) { |
| render << value->get_integer(); |
| } else { |
| render << value->get_double(); |
| } |
| break; |
| default: |
| throw "compiler error: no const of base type " + t_base_type::t_base_name(tbase); |
| } |
| } else if (type->is_enum()) { |
| render << "(" << type_name(type) << ")" << value->get_integer(); |
| } else { |
| string t = tmp("tmp"); |
| indent(out) << type_name(type) << " " << t << ";" << endl; |
| print_const_value(out, t, type, value); |
| render << t; |
| } |
| |
| return render.str(); |
| } |
| |
| /** |
| * Generates a struct definition for a thrift data type. This is a class |
| * with data members and a read/write() function, plus a mirroring isset |
| * inner class. |
| * |
| * @param tstruct The struct definition |
| */ |
| void t_cpp_generator::generate_cpp_struct(t_struct* tstruct, bool is_exception) { |
| generate_struct_definition(f_types_, tstruct, is_exception); |
| generate_struct_fingerprint(f_types_impl_, tstruct, true); |
| generate_local_reflection(f_types_, tstruct, false); |
| generate_local_reflection(f_types_impl_, tstruct, true); |
| generate_local_reflection_pointer(f_types_impl_, tstruct); |
| |
| std::ofstream& out = (gen_templates_ ? f_types_tcc_ : f_types_impl_); |
| generate_struct_reader(out, tstruct); |
| generate_struct_writer(out, tstruct); |
| } |
| |
| /** |
| * Writes the struct definition into the header file |
| * |
| * @param out Output stream |
| * @param tstruct The struct |
| */ |
| void t_cpp_generator::generate_struct_definition(ofstream& out, |
| t_struct* tstruct, |
| bool is_exception, |
| bool pointers, |
| bool read, |
| bool write) { |
| string extends = ""; |
| if (is_exception) { |
| extends = " : public ::apache::thrift::TException"; |
| } |
| |
| // Get members |
| vector<t_field*>::const_iterator m_iter; |
| const vector<t_field*>& members = tstruct->get_members(); |
| |
| // Write the isset structure declaration outside the class. This makes |
| // the generated code amenable to processing by SWIG. |
| // We only declare the struct if it gets used in the class. |
| |
| // Isset struct has boolean fields, but only for non-required fields. |
| bool has_nonrequired_fields = false; |
| for (m_iter = members.begin(); m_iter != members.end(); ++m_iter) { |
| if ((*m_iter)->get_req() != t_field::T_REQUIRED) |
| has_nonrequired_fields = true; |
| } |
| |
| if (has_nonrequired_fields && (!pointers || read)) { |
| |
| out << |
| indent() << "typedef struct _" << tstruct->get_name() << "__isset {" << endl; |
| indent_up(); |
| |
| indent(out) << |
| "_" << tstruct->get_name() << "__isset() "; |
| bool first = true; |
| for (m_iter = members.begin(); m_iter != members.end(); ++m_iter) { |
| if ((*m_iter)->get_req() == t_field::T_REQUIRED) { |
| continue; |
| } |
| if (first) { |
| first = false; |
| out << |
| ": " << (*m_iter)->get_name() << "(false)"; |
| } else { |
| out << |
| ", " << (*m_iter)->get_name() << "(false)"; |
| } |
| } |
| out << " {}" << endl; |
| |
| for (m_iter = members.begin(); m_iter != members.end(); ++m_iter) { |
| if ((*m_iter)->get_req() != t_field::T_REQUIRED) { |
| indent(out) << |
| "bool " << (*m_iter)->get_name() << ";" << endl; |
| } |
| } |
| |
| indent_down(); |
| indent(out) << |
| "} _" << tstruct->get_name() << "__isset;" << endl; |
| } |
| |
| out << endl; |
| |
| // Open struct def |
| out << |
| indent() << "class " << tstruct->get_name() << extends << " {" << endl << |
| indent() << " public:" << endl << |
| endl; |
| indent_up(); |
| |
| // Put the fingerprint up top for all to see. |
| generate_struct_fingerprint(out, tstruct, false); |
| |
| if (!pointers) { |
| // Default constructor |
| indent(out) << |
| tstruct->get_name() << "()"; |
| |
| bool init_ctor = false; |
| |
| for (m_iter = members.begin(); m_iter != members.end(); ++m_iter) { |
| t_type* t = get_true_type((*m_iter)->get_type()); |
| if (t->is_base_type()) { |
| string dval; |
| if (t->is_enum()) { |
| dval += "(" + type_name(t) + ")"; |
| } |
| dval += t->is_string() ? "\"\"" : "0"; |
| t_const_value* cv = (*m_iter)->get_value(); |
| if (cv != NULL) { |
| dval = render_const_value(out, (*m_iter)->get_name(), t, cv); |
| } |
| if (!init_ctor) { |
| init_ctor = true; |
| out << " : "; |
| out << (*m_iter)->get_name() << "(" << dval << ")"; |
| } else { |
| out << ", " << (*m_iter)->get_name() << "(" << dval << ")"; |
| } |
| } |
| } |
| out << " {" << endl; |
| indent_up(); |
| // TODO(dreiss): When everything else in Thrift is perfect, |
| // do more of these in the initializer list. |
| for (m_iter = members.begin(); m_iter != members.end(); ++m_iter) { |
| t_type* t = get_true_type((*m_iter)->get_type()); |
| |
| if (!t->is_base_type()) { |
| t_const_value* cv = (*m_iter)->get_value(); |
| if (cv != NULL) { |
| print_const_value(out, (*m_iter)->get_name(), t, cv); |
| } |
| } |
| } |
| scope_down(out); |
| } |
| |
| if (tstruct->annotations_.find("final") == tstruct->annotations_.end()) { |
| out << |
| endl << |
| indent() << "virtual ~" << tstruct->get_name() << "() throw() {}" << endl << endl; |
| } |
| |
| // Pointer to this structure's reflection local typespec. |
| if (gen_dense_) { |
| indent(out) << |
| "static ::apache::thrift::reflection::local::TypeSpec* local_reflection;" << |
| endl << endl; |
| } |
| |
| // Declare all fields |
| for (m_iter = members.begin(); m_iter != members.end(); ++m_iter) { |
| indent(out) << |
| declare_field(*m_iter, false, pointers && !(*m_iter)->get_type()->is_xception(), !read) << endl; |
| } |
| |
| // Add the __isset data member if we need it, using the definition from above |
| if (has_nonrequired_fields && (!pointers || read)) { |
| out << |
| endl << |
| indent() << "_" << tstruct->get_name() << "__isset __isset;" << endl; |
| } |
| |
| // Create a setter function for each field |
| for (m_iter = members.begin(); m_iter != members.end(); ++m_iter) { |
| if (pointers) { |
| continue; |
| } |
| out << |
| endl << |
| indent() << "void __set_" << (*m_iter)->get_name() << |
| "(" << type_name((*m_iter)->get_type(), false, true); |
| out << " val) {" << endl << indent() << |
| indent() << (*m_iter)->get_name() << " = val;" << endl; |
| |
| // assume all fields are required except optional fields. |
| // for optional fields change __isset.name to true |
| bool is_optional = (*m_iter)->get_req() == t_field::T_OPTIONAL; |
| if (is_optional) { |
| out << |
| indent() << |
| indent() << "__isset." << (*m_iter)->get_name() << " = true;" << endl; |
| } |
| out << |
| indent()<< "}" << endl; |
| } |
| out << endl; |
| |
| if (!pointers) { |
| // Generate an equality testing operator. Make it inline since the compiler |
| // will do a better job than we would when deciding whether to inline it. |
| out << |
| indent() << "bool operator == (const " << tstruct->get_name() << " & " << |
| (members.size() > 0 ? "rhs" : "/* rhs */") << ") const" << endl; |
| scope_up(out); |
| for (m_iter = members.begin(); m_iter != members.end(); ++m_iter) { |
| // Most existing Thrift code does not use isset or optional/required, |
| // so we treat "default" fields as required. |
| if ((*m_iter)->get_req() != t_field::T_OPTIONAL) { |
| out << |
| indent() << "if (!(" << (*m_iter)->get_name() |
| << " == rhs." << (*m_iter)->get_name() << "))" << endl << |
| indent() << " return false;" << endl; |
| } else { |
| out << |
| indent() << "if (__isset." << (*m_iter)->get_name() |
| << " != rhs.__isset." << (*m_iter)->get_name() << ")" << endl << |
| indent() << " return false;" << endl << |
| indent() << "else if (__isset." << (*m_iter)->get_name() << " && !(" |
| << (*m_iter)->get_name() << " == rhs." << (*m_iter)->get_name() |
| << "))" << endl << |
| indent() << " return false;" << endl; |
| } |
| } |
| indent(out) << "return true;" << endl; |
| scope_down(out); |
| out << |
| indent() << "bool operator != (const " << tstruct->get_name() << " &rhs) const {" << endl << |
| indent() << " return !(*this == rhs);" << endl << |
| indent() << "}" << endl << endl; |
| |
| // Generate the declaration of a less-than operator. This must be |
| // implemented by the application developer if they wish to use it. (They |
| // will get a link error if they try to use it without an implementation.) |
| out << |
| indent() << "bool operator < (const " |
| << tstruct->get_name() << " & ) const;" << endl << endl; |
| } |
| |
| if (read) { |
| if (gen_templates_) { |
| out << |
| indent() << "template <class Protocol_>" << endl << |
| indent() << "uint32_t read(Protocol_* iprot);" << endl; |
| } else { |
| out << |
| indent() << "uint32_t read(" << |
| "::apache::thrift::protocol::TProtocol* iprot);" << endl; |
| } |
| } |
| if (write) { |
| if (gen_templates_) { |
| out << |
| indent() << "template <class Protocol_>" << endl << |
| indent() << "uint32_t write(Protocol_* oprot) const;" << endl; |
| } else { |
| out << |
| indent() << "uint32_t write(" << |
| "::apache::thrift::protocol::TProtocol* oprot) const;" << endl; |
| } |
| } |
| out << endl; |
| |
| indent_down(); |
| indent(out) << |
| "};" << endl << |
| endl; |
| } |
| |
| /** |
| * Writes the fingerprint of a struct to either the header or implementation. |
| * |
| * @param out Output stream |
| * @param tstruct The struct |
| */ |
| void t_cpp_generator::generate_struct_fingerprint(ofstream& out, |
| t_struct* tstruct, |
| bool is_definition) { |
| string stat, nspace, comment; |
| if (is_definition) { |
| stat = ""; |
| nspace = tstruct->get_name() + "::"; |
| comment = " "; |
| } else { |
| stat = "static "; |
| nspace = ""; |
| comment = "; // "; |
| } |
| |
| if (tstruct->has_fingerprint()) { |
| out << |
| indent() << stat << "const char* " << nspace |
| << "ascii_fingerprint" << comment << "= \"" << |
| tstruct->get_ascii_fingerprint() << "\";" << endl << |
| indent() << stat << "const uint8_t " << nspace << |
| "binary_fingerprint[" << t_type::fingerprint_len << "]" << comment << "= {"; |
| const char* comma = ""; |
| for (int i = 0; i < t_type::fingerprint_len; i++) { |
| out << comma << "0x" << t_struct::byte_to_hex(tstruct->get_binary_fingerprint()[i]); |
| comma = ","; |
| } |
| out << "};" << endl << endl; |
| } |
| } |
| |
| /** |
| * Writes the local reflection of a type (either declaration or definition). |
| */ |
| void t_cpp_generator::generate_local_reflection(std::ofstream& out, |
| t_type* ttype, |
| bool is_definition) { |
| if (!gen_dense_) { |
| return; |
| } |
| ttype = get_true_type(ttype); |
| assert(ttype->has_fingerprint()); |
| string key = ttype->get_ascii_fingerprint() + (is_definition ? "-defn" : "-decl"); |
| // Note that we have generated this fingerprint. If we already did, bail out. |
| if (!reflected_fingerprints_.insert(key).second) { |
| return; |
| } |
| // Let each program handle its own structures. |
| if (ttype->get_program() != NULL && ttype->get_program() != program_) { |
| return; |
| } |
| |
| // Do dependencies. |
| if (ttype->is_list()) { |
| generate_local_reflection(out, ((t_list*)ttype)->get_elem_type(), is_definition); |
| } else if (ttype->is_set()) { |
| generate_local_reflection(out, ((t_set*)ttype)->get_elem_type(), is_definition); |
| } else if (ttype->is_map()) { |
| generate_local_reflection(out, ((t_map*)ttype)->get_key_type(), is_definition); |
| generate_local_reflection(out, ((t_map*)ttype)->get_val_type(), is_definition); |
| } else if (ttype->is_struct() || ttype->is_xception()) { |
| // Hacky hacky. For efficiency and convenience, we need a dummy "T_STOP" |
| // type at the end of our typespec array. Unfortunately, there is no |
| // T_STOP type, so we use the global void type, and special case it when |
| // generating its typespec. |
| |
| const vector<t_field*>& members = ((t_struct*)ttype)->get_sorted_members(); |
| vector<t_field*>::const_iterator m_iter; |
| for (m_iter = members.begin(); m_iter != members.end(); ++m_iter) { |
| generate_local_reflection(out, (**m_iter).get_type(), is_definition); |
| } |
| generate_local_reflection(out, g_type_void, is_definition); |
| |
| // For definitions of structures, do the arrays of metas and field specs also. |
| if (is_definition) { |
| out << |
| indent() << "::apache::thrift::reflection::local::FieldMeta" << endl << |
| indent() << local_reflection_name("metas", ttype) <<"[] = {" << endl; |
| indent_up(); |
| for (m_iter = members.begin(); m_iter != members.end(); ++m_iter) { |
| indent(out) << "{ " << (*m_iter)->get_key() << ", " << |
| (((*m_iter)->get_req() == t_field::T_OPTIONAL) ? "true" : "false") << |
| " }," << endl; |
| } |
| // Zero for the T_STOP marker. |
| indent(out) << "{ 0, false }" << endl << "};" << endl; |
| indent_down(); |
| |
| out << |
| indent() << "::apache::thrift::reflection::local::TypeSpec*" << endl << |
| indent() << local_reflection_name("specs", ttype) <<"[] = {" << endl; |
| indent_up(); |
| for (m_iter = members.begin(); m_iter != members.end(); ++m_iter) { |
| indent(out) << "&" << |
| local_reflection_name("typespec", (*m_iter)->get_type(), true) << "," << endl; |
| } |
| indent(out) << "&" << |
| local_reflection_name("typespec", g_type_void) << "," << endl; |
| indent_down(); |
| indent(out) << "};" << endl; |
| } |
| } |
| |
| out << |
| indent() << "// " << ttype->get_fingerprint_material() << endl << |
| indent() << (is_definition ? "" : "extern ") << |
| "::apache::thrift::reflection::local::TypeSpec" << endl << |
| local_reflection_name("typespec", ttype) << |
| (is_definition ? "(" : ";") << endl; |
| |
| if (!is_definition) { |
| out << endl; |
| return; |
| } |
| |
| indent_up(); |
| |
| if (ttype->is_void()) { |
| indent(out) << "::apache::thrift::protocol::T_STOP"; |
| } else { |
| indent(out) << type_to_enum(ttype); |
| } |
| |
| if (ttype->is_struct()) { |
| out << "," << endl << |
| indent() << type_name(ttype) << "::binary_fingerprint," << endl << |
| indent() << local_reflection_name("metas", ttype) << "," << endl << |
| indent() << local_reflection_name("specs", ttype); |
| } else if (ttype->is_list()) { |
| out << "," << endl << |
| indent() << "&" << local_reflection_name("typespec", ((t_list*)ttype)->get_elem_type()) << "," << endl << |
| indent() << "NULL"; |
| } else if (ttype->is_set()) { |
| out << "," << endl << |
| indent() << "&" << local_reflection_name("typespec", ((t_set*)ttype)->get_elem_type()) << "," << endl << |
| indent() << "NULL"; |
| } else if (ttype->is_map()) { |
| out << "," << endl << |
| indent() << "&" << local_reflection_name("typespec", ((t_map*)ttype)->get_key_type()) << "," << endl << |
| indent() << "&" << local_reflection_name("typespec", ((t_map*)ttype)->get_val_type()); |
| } |
| |
| out << ");" << endl << endl; |
| |
| indent_down(); |
| } |
| |
| /** |
| * Writes the structure's static pointer to its local reflection typespec |
| * into the implementation file. |
| */ |
| void t_cpp_generator::generate_local_reflection_pointer(std::ofstream& out, |
| t_type* ttype) { |
| if (!gen_dense_) { |
| return; |
| } |
| indent(out) << |
| "::apache::thrift::reflection::local::TypeSpec* " << |
| ttype->get_name() << "::local_reflection = " << endl << |
| indent() << " &" << local_reflection_name("typespec", ttype) << ";" << |
| endl << endl; |
| } |
| |
| /** |
| * Makes a helper function to gen a struct reader. |
| * |
| * @param out Stream to write to |
| * @param tstruct The struct |
| */ |
| void t_cpp_generator::generate_struct_reader(ofstream& out, |
| t_struct* tstruct, |
| bool pointers) { |
| if (gen_templates_) { |
| out << |
| indent() << "template <class Protocol_>" << endl << |
| indent() << "uint32_t " << tstruct->get_name() << |
| "::read(Protocol_* iprot) {" << endl; |
| } else { |
| indent(out) << |
| "uint32_t " << tstruct->get_name() << |
| "::read(::apache::thrift::protocol::TProtocol* iprot) {" << endl; |
| } |
| indent_up(); |
| |
| const vector<t_field*>& fields = tstruct->get_members(); |
| vector<t_field*>::const_iterator f_iter; |
| |
| // Declare stack tmp variables |
| out << |
| endl << |
| indent() << "uint32_t xfer = 0;" << endl << |
| indent() << "std::string fname;" << endl << |
| indent() << "::apache::thrift::protocol::TType ftype;" << endl << |
| indent() << "int16_t fid;" << endl << |
| endl << |
| indent() << "xfer += iprot->readStructBegin(fname);" << endl << |
| endl << |
| indent() << "using ::apache::thrift::protocol::TProtocolException;" << endl << |
| endl; |
| |
| // Required variables aren't in __isset, so we need tmp vars to check them. |
| for (f_iter = fields.begin(); f_iter != fields.end(); ++f_iter) { |
| if ((*f_iter)->get_req() == t_field::T_REQUIRED) |
| indent(out) << "bool isset_" << (*f_iter)->get_name() << " = false;" << endl; |
| } |
| out << endl; |
| |
| |
| // Loop over reading in fields |
| indent(out) << |
| "while (true)" << endl; |
| scope_up(out); |
| |
| // Read beginning field marker |
| indent(out) << |
| "xfer += iprot->readFieldBegin(fname, ftype, fid);" << endl; |
| |
| // Check for field STOP marker |
| out << |
| indent() << "if (ftype == ::apache::thrift::protocol::T_STOP) {" << endl << |
| indent() << " break;" << endl << |
| indent() << "}" << endl; |
| |
| // Switch statement on the field we are reading |
| indent(out) << |
| "switch (fid)" << endl; |
| |
| scope_up(out); |
| |
| // Generate deserialization code for known cases |
| for (f_iter = fields.begin(); f_iter != fields.end(); ++f_iter) { |
| indent(out) << |
| "case " << (*f_iter)->get_key() << ":" << endl; |
| indent_up(); |
| indent(out) << |
| "if (ftype == " << type_to_enum((*f_iter)->get_type()) << ") {" << endl; |
| indent_up(); |
| |
| const char *isset_prefix = |
| ((*f_iter)->get_req() != t_field::T_REQUIRED) ? "this->__isset." : "isset_"; |
| |
| #if 0 |
| // This code throws an exception if the same field is encountered twice. |
| // We've decided to leave it out for performance reasons. |
| // TODO(dreiss): Generate this code and "if" it out to make it easier |
| // for people recompiling thrift to include it. |
| out << |
| indent() << "if (" << isset_prefix << (*f_iter)->get_name() << ")" << endl << |
| indent() << " throw TProtocolException(TProtocolException::INVALID_DATA);" << endl; |
| #endif |
| |
| if (pointers && !(*f_iter)->get_type()->is_xception()) { |
| generate_deserialize_field(out, *f_iter, "(*(this->", "))"); |
| } else { |
| generate_deserialize_field(out, *f_iter, "this->"); |
| } |
| out << |
| indent() << isset_prefix << (*f_iter)->get_name() << " = true;" << endl; |
| indent_down(); |
| out << |
| indent() << "} else {" << endl << |
| indent() << " xfer += iprot->skip(ftype);" << endl << |
| // TODO(dreiss): Make this an option when thrift structs |
| // have a common base class. |
| // indent() << " throw TProtocolException(TProtocolException::INVALID_DATA);" << endl << |
| indent() << "}" << endl << |
| indent() << "break;" << endl; |
| indent_down(); |
| } |
| |
| // In the default case we skip the field |
| out << |
| indent() << "default:" << endl << |
| indent() << " xfer += iprot->skip(ftype);" << endl << |
| indent() << " break;" << endl; |
| |
| scope_down(out); |
| |
| // Read field end marker |
| indent(out) << |
| "xfer += iprot->readFieldEnd();" << endl; |
| |
| scope_down(out); |
| |
| out << |
| endl << |
| indent() << "xfer += iprot->readStructEnd();" << endl; |
| |
| // Throw if any required fields are missing. |
| // We do this after reading the struct end so that |
| // there might possibly be a chance of continuing. |
| out << endl; |
| for (f_iter = fields.begin(); f_iter != fields.end(); ++f_iter) { |
| if ((*f_iter)->get_req() == t_field::T_REQUIRED) |
| out << |
| indent() << "if (!isset_" << (*f_iter)->get_name() << ')' << endl << |
| indent() << " throw TProtocolException(TProtocolException::INVALID_DATA);" << endl; |
| } |
| |
| indent(out) << "return xfer;" << endl; |
| |
| indent_down(); |
| indent(out) << |
| "}" << endl << endl; |
| } |
| |
| /** |
| * Generates the write function. |
| * |
| * @param out Stream to write to |
| * @param tstruct The struct |
| */ |
| void t_cpp_generator::generate_struct_writer(ofstream& out, |
| t_struct* tstruct, |
| bool pointers) { |
| string name = tstruct->get_name(); |
| const vector<t_field*>& fields = tstruct->get_sorted_members(); |
| vector<t_field*>::const_iterator f_iter; |
| |
| if (gen_templates_) { |
| out << |
| indent() << "template <class Protocol_>" << endl << |
| indent() << "uint32_t " << tstruct->get_name() << |
| "::write(Protocol_* oprot) const {" << endl; |
| } else { |
| indent(out) << |
| "uint32_t " << tstruct->get_name() << |
| "::write(::apache::thrift::protocol::TProtocol* oprot) const {" << endl; |
| } |
| indent_up(); |
| |
| out << |
| indent() << "uint32_t xfer = 0;" << endl; |
| |
| indent(out) << |
| "xfer += oprot->writeStructBegin(\"" << name << "\");" << endl; |
| for (f_iter = fields.begin(); f_iter != fields.end(); ++f_iter) { |
| if ((*f_iter)->get_req() == t_field::T_OPTIONAL) { |
| indent(out) << "if (this->__isset." << (*f_iter)->get_name() << ") {" << endl; |
| indent_up(); |
| } |
| // Write field header |
| out << |
| indent() << "xfer += oprot->writeFieldBegin(" << |
| "\"" << (*f_iter)->get_name() << "\", " << |
| type_to_enum((*f_iter)->get_type()) << ", " << |
| (*f_iter)->get_key() << ");" << endl; |
| // Write field contents |
| if (pointers && !(*f_iter)->get_type()->is_xception()) { |
| generate_serialize_field(out, *f_iter, "(*(this->", "))"); |
| } else { |
| generate_serialize_field(out, *f_iter, "this->"); |
| } |
| // Write field closer |
| indent(out) << |
| "xfer += oprot->writeFieldEnd();" << endl; |
| if ((*f_iter)->get_req() == t_field::T_OPTIONAL) { |
| indent_down(); |
| indent(out) << '}' << endl; |
| } |
| } |
| |
| // Write the struct map |
| out << |
| indent() << "xfer += oprot->writeFieldStop();" << endl << |
| indent() << "xfer += oprot->writeStructEnd();" << endl << |
| indent() << "return xfer;" << endl; |
| |
| indent_down(); |
| indent(out) << |
| "}" << endl << |
| endl; |
| } |
| |
| /** |
| * Struct writer for result of a function, which can have only one of its |
| * fields set and does a conditional if else look up into the __isset field |
| * of the struct. |
| * |
| * @param out Output stream |
| * @param tstruct The result struct |
| */ |
| void t_cpp_generator::generate_struct_result_writer(ofstream& out, |
| t_struct* tstruct, |
| bool pointers) { |
| string name = tstruct->get_name(); |
| const vector<t_field*>& fields = tstruct->get_sorted_members(); |
| vector<t_field*>::const_iterator f_iter; |
| |
| if (gen_templates_) { |
| out << |
| indent() << "template <class Protocol_>" << endl << |
| indent() << "uint32_t " << tstruct->get_name() << |
| "::write(Protocol_* oprot) const {" << endl; |
| } else { |
| indent(out) << |
| "uint32_t " << tstruct->get_name() << |
| "::write(::apache::thrift::protocol::TProtocol* oprot) const {" << endl; |
| } |
| indent_up(); |
| |
| out << |
| endl << |
| indent() << "uint32_t xfer = 0;" << endl << |
| endl; |
| |
| indent(out) << |
| "xfer += oprot->writeStructBegin(\"" << name << "\");" << endl; |
| |
| bool first = true; |
| for (f_iter = fields.begin(); f_iter != fields.end(); ++f_iter) { |
| if (first) { |
| first = false; |
| out << |
| endl << |
| indent() << "if "; |
| } else { |
| out << |
| " else if "; |
| } |
| |
| out << "(this->__isset." << (*f_iter)->get_name() << ") {" << endl; |
| |
| indent_up(); |
| |
| // Write field header |
| out << |
| indent() << "xfer += oprot->writeFieldBegin(" << |
| "\"" << (*f_iter)->get_name() << "\", " << |
| type_to_enum((*f_iter)->get_type()) << ", " << |
| (*f_iter)->get_key() << ");" << endl; |
| // Write field contents |
| if (pointers) { |
| generate_serialize_field(out, *f_iter, "(*(this->", "))"); |
| } else { |
| generate_serialize_field(out, *f_iter, "this->"); |
| } |
| // Write field closer |
| indent(out) << "xfer += oprot->writeFieldEnd();" << endl; |
| |
| indent_down(); |
| indent(out) << "}"; |
| } |
| |
| // Write the struct map |
| out << |
| endl << |
| indent() << "xfer += oprot->writeFieldStop();" << endl << |
| indent() << "xfer += oprot->writeStructEnd();" << endl << |
| indent() << "return xfer;" << endl; |
| |
| indent_down(); |
| indent(out) << |
| "}" << endl << |
| endl; |
| } |
| |
| /** |
| * Generates a thrift service. In C++, this comprises an entirely separate |
| * header and source file. The header file defines the methods and includes |
| * the data types defined in the main header file, and the implementation |
| * file contains implementations of the basic printer and default interfaces. |
| * |
| * @param tservice The service definition |
| */ |
| void t_cpp_generator::generate_service(t_service* tservice) { |
| string svcname = tservice->get_name(); |
| |
| // Make output files |
| string f_header_name = get_out_dir()+svcname+".h"; |
| f_header_.open(f_header_name.c_str()); |
| |
| // Print header file includes |
| f_header_ << |
| autogen_comment(); |
| f_header_ << |
| "#ifndef " << svcname << "_H" << endl << |
| "#define " << svcname << "_H" << endl << |
| endl; |
| if (gen_cob_style_) { |
| f_header_ << |
| "#include <transport/TBufferTransports.h>" << endl << // TMemoryBuffer |
| "#include <tr1/functional>" << endl << |
| "namespace apache { namespace thrift { namespace async {" << endl << |
| "class TAsyncChannel;" << endl << |
| "}}}" << endl; |
| } |
| f_header_ << |
| "#include <TProcessor.h>" << endl; |
| if (gen_cob_style_) { |
| f_header_ << |
| "#include <async/TAsyncProcessor.h>" << endl; |
| } |
| f_header_ << |
| "#include \"" << get_include_prefix(*get_program()) << program_name_ << |
| "_types.h\"" << endl; |
| |
| t_service* extends_service = tservice->get_extends(); |
| if (extends_service != NULL) { |
| f_header_ << |
| "#include \"" << get_include_prefix(*(extends_service->get_program())) << |
| extends_service->get_name() << ".h\"" << endl; |
| } |
| |
| f_header_ << |
| endl << |
| ns_open_ << endl << |
| endl; |
| |
| // Service implementation file includes |
| string f_service_name = get_out_dir()+svcname+".cpp"; |
| f_service_.open(f_service_name.c_str()); |
| f_service_ << |
| autogen_comment(); |
| f_service_ << |
| "#include \"" << get_include_prefix(*get_program()) << svcname << ".h\"" << endl; |
| if (gen_cob_style_) { |
| f_service_ << |
| "#include \"async/TAsyncChannel.h\"" << endl; |
| } |
| if (gen_templates_) { |
| f_service_ << |
| "#include \"" << get_include_prefix(*get_program()) << svcname << |
| ".tcc\"" << endl; |
| |
| string f_service_tcc_name = get_out_dir()+svcname+".tcc"; |
| f_service_tcc_.open(f_service_tcc_name.c_str()); |
| f_service_tcc_ << |
| autogen_comment(); |
| f_service_tcc_ << |
| "#include \"" << get_include_prefix(*get_program()) << svcname << |
| ".h\"" << endl; |
| |
| f_service_tcc_ << |
| "#ifndef " << svcname << "_TCC" << endl << |
| "#define " << svcname << "_TCC" << endl << |
| endl; |
| |
| if (gen_cob_style_) { |
| f_service_tcc_ << |
| "#include \"async/TAsyncChannel.h\"" << endl; |
| } |
| } |
| |
| f_service_ << |
| endl << ns_open_ << endl << endl; |
| f_service_tcc_ << |
| endl << ns_open_ << endl << endl; |
| |
| // Generate all the components |
| generate_service_interface(tservice, ""); |
| generate_service_null(tservice, ""); |
| generate_service_helpers(tservice); |
| generate_service_client(tservice, ""); |
| generate_service_processor(tservice, ""); |
| generate_service_multiface(tservice); |
| generate_service_skeleton(tservice); |
| |
| // Generate all the cob components |
| if (gen_cob_style_) { |
| generate_service_interface(tservice, "CobCl"); |
| generate_service_interface(tservice, "CobSv"); |
| generate_service_null(tservice, "CobSv"); |
| generate_service_client(tservice, "Cob"); |
| generate_service_processor(tservice, "Cob"); |
| generate_service_async_skeleton(tservice); |
| } |
| |
| // Close the namespace |
| f_service_ << |
| ns_close_ << endl << |
| endl; |
| f_service_tcc_ << |
| ns_close_ << endl << |
| endl; |
| f_header_ << |
| ns_close_ << endl << |
| endl; |
| |
| // TODO(simpkins): Make this a separate option |
| if (gen_templates_) { |
| f_header_ << |
| "#include \"" << get_include_prefix(*get_program()) << svcname << |
| ".tcc\"" << endl << |
| "#include \"" << get_include_prefix(*get_program()) << program_name_ << |
| "_types.tcc\"" << endl << |
| endl; |
| } |
| |
| f_header_ << |
| "#endif" << endl; |
| f_service_tcc_ << |
| "#endif" << endl; |
| |
| // Close the files |
| f_service_tcc_.close(); |
| f_service_.close(); |
| f_header_.close(); |
| } |
| |
| /** |
| * Generates helper functions for a service. Basically, this generates types |
| * for all the arguments and results to functions. |
| * |
| * @param tservice The service to generate a header definition for |
| */ |
| void t_cpp_generator::generate_service_helpers(t_service* tservice) { |
| vector<t_function*> functions = tservice->get_functions(); |
| vector<t_function*>::iterator f_iter; |
| std::ofstream& out = (gen_templates_ ? f_service_tcc_ : f_service_); |
| |
| for (f_iter = functions.begin(); f_iter != functions.end(); ++f_iter) { |
| t_struct* ts = (*f_iter)->get_arglist(); |
| string name_orig = ts->get_name(); |
| |
| // TODO(dreiss): Why is this stuff not in generate_function_helpers? |
| ts->set_name(tservice->get_name() + "_" + (*f_iter)->get_name() + "_args"); |
| generate_struct_definition(f_header_, ts, false); |
| generate_struct_reader(out, ts); |
| generate_struct_writer(out, ts); |
| ts->set_name(tservice->get_name() + "_" + (*f_iter)->get_name() + "_pargs"); |
| generate_struct_definition(f_header_, ts, false, true, false, true); |
| generate_struct_writer(out, ts, true); |
| ts->set_name(name_orig); |
| |
| generate_function_helpers(tservice, *f_iter); |
| } |
| } |
| |
| /** |
| * Generates a service interface definition. |
| * |
| * @param tservice The service to generate a header definition for |
| */ |
| void t_cpp_generator::generate_service_interface(t_service* tservice, string style) { |
| |
| string service_if_name = service_name_ + style + "If"; |
| if (style == "CobCl") { |
| // Forward declare the client. |
| string client_name = service_name_ + "CobClient"; |
| if (gen_templates_) { |
| client_name += "T"; |
| service_if_name += "T"; |
| indent(f_header_) << |
| "template <class Protocol_>" << endl; |
| } |
| indent(f_header_) << "class " << client_name << ";" << |
| endl << endl; |
| } |
| |
| string extends = ""; |
| if (tservice->get_extends() != NULL) { |
| extends = " : virtual public " + type_name(tservice->get_extends()) + |
| style + "If"; |
| if (style == "CobCl" && gen_templates_) { |
| // TODO(simpkins): If gen_templates_ is enabled, we currently assume all |
| // parent services were also generated with templates enabled. |
| extends += "T<Protocol_>"; |
| } |
| } |
| |
| if (style == "CobCl" && gen_templates_) { |
| f_header_ << "template <class Protocol_>" << endl; |
| } |
| f_header_ << |
| "class " << service_if_name << extends << " {" << endl << |
| " public:" << endl; |
| indent_up(); |
| f_header_ << |
| indent() << "virtual ~" << service_if_name << "() {}" << endl; |
| |
| vector<t_function*> functions = tservice->get_functions(); |
| vector<t_function*>::iterator f_iter; |
| for (f_iter = functions.begin(); f_iter != functions.end(); ++f_iter) { |
| f_header_ << |
| indent() << "virtual " << function_signature(*f_iter, style) << " = 0;" << endl; |
| } |
| indent_down(); |
| f_header_ << |
| "};" << endl << endl; |
| |
| if (style == "CobCl" && gen_templates_) { |
| // generate a backwards-compatible typedef for clients that do not |
| // know about the new template-style code |
| f_header_ << |
| "typedef " << service_if_name << |
| "< ::apache::thrift::protocol::TProtocol> " << |
| service_name_ << style << "If;" << |
| endl << endl; |
| } |
| } |
| |
| /** |
| * Generates a null implementation of the service. |
| * |
| * @param tservice The service to generate a header definition for |
| */ |
| void t_cpp_generator::generate_service_null(t_service* tservice, string style) { |
| string extends = ""; |
| if (tservice->get_extends() != NULL) { |
| extends = " , virtual public " + type_name(tservice->get_extends()) + style + "Null"; |
| } |
| f_header_ << |
| "class " << service_name_ << style << "Null : virtual public " << service_name_ << style << "If" << extends << " {" << endl << |
| " public:" << endl; |
| indent_up(); |
| f_header_ << |
| indent() << "virtual ~" << service_name_ << style << "Null() {}" << endl; |
| vector<t_function*> functions = tservice->get_functions(); |
| vector<t_function*>::iterator f_iter; |
| for (f_iter = functions.begin(); f_iter != functions.end(); ++f_iter) { |
| f_header_ << |
| indent() << function_signature(*f_iter, style, "", false) << " {" << endl; |
| indent_up(); |
| |
| t_type* returntype = (*f_iter)->get_returntype(); |
| t_field returnfield(returntype, "_return"); |
| |
| if (style == "") { |
| if (returntype->is_void() || is_complex_type(returntype)) { |
| f_header_ << indent() << "return;" << endl; |
| } else { |
| f_header_ << |
| indent() << declare_field(&returnfield, true) << endl << |
| indent() << "return _return;" << endl; |
| } |
| } else if (style == "CobSv") { |
| if (returntype->is_void()) { |
| f_header_ << indent() << "return cob();" << endl; |
| } else { |
| t_field returnfield(returntype, "_return"); |
| f_header_ << |
| indent() << declare_field(&returnfield, true) << endl << |
| indent() << "return cob(_return);" << endl; |
| } |
| |
| } else { |
| throw "UNKNOWN STYLE"; |
| } |
| |
| indent_down(); |
| f_header_ << |
| indent() << "}" << endl; |
| } |
| indent_down(); |
| f_header_ << |
| "};" << endl << endl; |
| } |
| |
| void t_cpp_generator::generate_function_call(ostream& out, t_function* tfunction, string target, string iface, string arg_prefix) { |
| bool first = true; |
| t_type* ret_type = get_true_type(tfunction->get_returntype()); |
| out << indent(); |
| if (!tfunction->is_oneway() && !ret_type->is_void()) { |
| if (is_complex_type(ret_type)) { |
| first = false; |
| out << iface << "->" << tfunction->get_name() << "(" << target; |
| } else { |
| out << target << " = " << iface << "->" << tfunction->get_name() << "("; |
| } |
| } else { |
| out << iface << "->" << tfunction->get_name() << "("; |
| } |
| const std::vector<t_field*>& fields = tfunction->get_arglist()->get_members(); |
| vector<t_field*>::const_iterator f_iter; |
| for (f_iter = fields.begin(); f_iter != fields.end(); ++f_iter) { |
| if (first) { |
| first = false; |
| } else { |
| out << ", "; |
| } |
| out << arg_prefix << (*f_iter)->get_name(); |
| } |
| out << ");" << endl; |
| } |
| |
| void t_cpp_generator::generate_service_async_skeleton(t_service* tservice) { |
| string svcname = tservice->get_name(); |
| |
| // Service implementation file includes |
| string f_skeleton_name = get_out_dir()+svcname+"_async_server.skeleton.cpp"; |
| |
| string ns = namespace_prefix(tservice->get_program()->get_namespace("cpp")); |
| |
| ofstream f_skeleton; |
| f_skeleton.open(f_skeleton_name.c_str()); |
| f_skeleton << |
| "// This autogenerated skeleton file illustrates one way to adapt a synchronous" << endl << |
| "// interface into an asynchronous interface. You should copy it to another" << endl << |
| "// filename to avoid overwriting it and rewrite as asynchronous any functions" << endl << |
| "// that would otherwise introduce unwanted latency." << endl << |
| endl << |
| "#include \"" << get_include_prefix(*get_program()) << svcname << ".h\"" << endl << |
| "#include <protocol/TBinaryProtocol.h>" << endl << |
| "#include <async/TEventServer.h>" << endl << |
| endl << |
| "using namespace ::apache::thrift;" << endl << |
| "using namespace ::apache::thrift::protocol;" << endl << |
| "using namespace ::apache::thrift::transport;" << endl << |
| "using namespace ::apache::thrift::async;" << endl << |
| endl << |
| "using boost::shared_ptr;" << endl << |
| endl; |
| |
| if (!ns.empty()) { |
| f_skeleton << |
| "using namespace " << string(ns, 0, ns.size()-2) << ";" << endl << |
| endl; |
| } |
| |
| f_skeleton << |
| "class " << svcname << "AsyncHandler : " << |
| "public " << svcname << "CobSvIf {" << endl << |
| " public:" << endl; |
| indent_up(); |
| f_skeleton << |
| indent() << svcname << "AsyncHandler() {" << endl << |
| indent() << " syncHandler_ = std::auto_ptr<" << svcname << |
| "Handler>(new " << svcname << "Handler);" << endl << |
| indent() << " // Your initialization goes here" << endl << |
| indent() << "}" << endl; |
| f_skeleton << |
| indent() << "virtual ~" << service_name_ << "AsyncHandler();" << endl; |
| |
| vector<t_function*> functions = tservice->get_functions(); |
| vector<t_function*>::iterator f_iter; |
| for (f_iter = functions.begin(); f_iter != functions.end(); ++f_iter) { |
| f_skeleton << |
| endl << |
| indent() << function_signature(*f_iter, "CobSv", "", true) << " {" << endl; |
| indent_up(); |
| |
| t_type* returntype = (*f_iter)->get_returntype(); |
| t_field returnfield(returntype, "_return"); |
| |
| string target = returntype->is_void() ? "" : "_return"; |
| if (!returntype->is_void()) { |
| f_skeleton << |
| indent() << declare_field(&returnfield, true) << endl; |
| } |
| generate_function_call(f_skeleton, *f_iter, target, "syncHandler_", ""); |
| f_skeleton << indent() << "return cob(" << target << ");" << endl; |
| |
| scope_down(f_skeleton); |
| } |
| f_skeleton << endl << |
| " protected:" << endl << |
| indent() << "std::auto_ptr<" << svcname << "Handler> syncHandler_;" << endl; |
| indent_down(); |
| f_skeleton << |
| "};" << endl << endl; |
| } |
| |
| /** |
| * Generates a multiface, which is a single server that just takes a set |
| * of objects implementing the interface and calls them all, returning the |
| * value of the last one to be called. |
| * |
| * @param tservice The service to generate a multiserver for. |
| */ |
| void t_cpp_generator::generate_service_multiface(t_service* tservice) { |
| // Generate the dispatch methods |
| vector<t_function*> functions = tservice->get_functions(); |
| vector<t_function*>::iterator f_iter; |
| |
| string extends = ""; |
| string extends_multiface = ""; |
| if (tservice->get_extends() != NULL) { |
| extends = type_name(tservice->get_extends()); |
| extends_multiface = ", public " + extends + "Multiface"; |
| } |
| |
| string list_type = string("std::vector<boost::shared_ptr<") + service_name_ + "If> >"; |
| |
| // Generate the header portion |
| f_header_ << |
| "class " << service_name_ << "Multiface : " << |
| "virtual public " << service_name_ << "If" << |
| extends_multiface << " {" << endl << |
| " public:" << endl; |
| indent_up(); |
| f_header_ << |
| indent() << service_name_ << "Multiface(" << list_type << "& ifaces) : ifaces_(ifaces) {" << endl; |
| if (!extends.empty()) { |
| f_header_ << |
| indent() << " std::vector<boost::shared_ptr<" + service_name_ + "If> >::iterator iter;" << endl << |
| indent() << " for (iter = ifaces.begin(); iter != ifaces.end(); ++iter) {" << endl << |
| indent() << " " << extends << "Multiface::add(*iter);" << endl << |
| indent() << " }" << endl; |
| } |
| f_header_ << |
| indent() << "}" << endl << |
| indent() << "virtual ~" << service_name_ << "Multiface() {}" << endl; |
| indent_down(); |
| |
| // Protected data members |
| f_header_ << |
| " protected:" << endl; |
| indent_up(); |
| f_header_ << |
| indent() << list_type << " ifaces_;" << endl << |
| indent() << service_name_ << "Multiface() {}" << endl << |
| indent() << "void add(boost::shared_ptr<" << service_name_ << "If> iface) {" << endl; |
| if (!extends.empty()) { |
| f_header_ << |
| indent() << " " << extends << "Multiface::add(iface);" << endl; |
| } |
| f_header_ << |
| indent() << " ifaces_.push_back(iface);" << endl << |
| indent() << "}" << endl; |
| indent_down(); |
| |
| f_header_ << |
| indent() << " public:" << endl; |
| indent_up(); |
| |
| for (f_iter = functions.begin(); f_iter != functions.end(); ++f_iter) { |
| t_struct* arglist = (*f_iter)->get_arglist(); |
| const vector<t_field*>& args = arglist->get_members(); |
| vector<t_field*>::const_iterator a_iter; |
| |
| string call = string("ifaces_[i]->") + (*f_iter)->get_name() + "("; |
| bool first = true; |
| if (is_complex_type((*f_iter)->get_returntype())) { |
| call += "_return"; |
| first = false; |
| } |
| for (a_iter = args.begin(); a_iter != args.end(); ++a_iter) { |
| if (first) { |
| first = false; |
| } else { |
| call += ", "; |
| } |
| call += (*a_iter)->get_name(); |
| } |
| call += ")"; |
| |
| f_header_ << |
| indent() << function_signature(*f_iter, "") << " {" << endl; |
| indent_up(); |
| f_header_ << |
| indent() << "size_t sz = ifaces_.size();" << endl << |
| indent() << "for (size_t i = 0; i < sz; ++i) {" << endl; |
| if (!(*f_iter)->get_returntype()->is_void()) { |
| f_header_ << |
| indent() << " if (i == sz - 1) {" << endl; |
| if (is_complex_type((*f_iter)->get_returntype())) { |
| f_header_ << |
| indent() << " " << call << ";" << endl << |
| indent() << " return;" << endl; |
| } else { |
| f_header_ << |
| indent() << " return " << call << ";" << endl; |
| } |
| f_header_ << |
| indent() << " } else {" << endl << |
| indent() << " " << call << ";" << endl << |
| indent() << " }" << endl; |
| } else { |
| f_header_ << |
| indent() << " " << call << ";" << endl; |
| } |
| |
| f_header_ << |
| indent() << "}" << endl; |
| |
| indent_down(); |
| f_header_ << |
| indent() << "}" << endl << |
| endl; |
| } |
| |
| indent_down(); |
| f_header_ << |
| indent() << "};" << endl << |
| endl; |
| } |
| |
| /** |
| * Generates a service client definition. |
| * |
| * @param tservice The service to generate a server for. |
| */ |
| void t_cpp_generator::generate_service_client(t_service* tservice, string style) { |
| string ifstyle; |
| if (style == "Cob") { |
| ifstyle = "CobCl"; |
| } |
| |
| std::ofstream& out = (gen_templates_ ? f_service_tcc_ : f_service_); |
| string template_header, template_suffix, short_suffix, protocol_type, _this; |
| string const prot_factory_type = |
| "::apache::thrift::protocol::TProtocolFactory"; |
| if (gen_templates_) { |
| template_header = "template <class Protocol_>\n"; |
| short_suffix = "T"; |
| template_suffix = "T<Protocol_>"; |
| protocol_type = "Protocol_"; |
| _this = "this->"; |
| } else { |
| protocol_type = "::apache::thrift::protocol::TProtocol"; |
| } |
| string prot_ptr = "boost::shared_ptr< " + protocol_type + ">"; |
| string client_suffix = "Client" + template_suffix; |
| string if_suffix = "If"; |
| if (style == "Cob") { |
| if_suffix += template_suffix; |
| } |
| |
| string extends = ""; |
| string extends_client = ""; |
| if (tservice->get_extends() != NULL) { |
| // TODO(simpkins): If gen_templates_ is enabled, we currently assume all |
| // parent services were also generated with templates enabled. |
| extends = type_name(tservice->get_extends()); |
| extends_client = ", public " + extends + style + client_suffix; |
| } |
| |
| // Generate the header portion |
| f_header_ << |
| template_header << |
| "class " << service_name_ << style << "Client" << short_suffix << " : " << |
| "virtual public " << service_name_ << ifstyle << if_suffix << |
| extends_client << " {" << endl << |
| " public:" << endl; |
| |
| indent_up(); |
| if (style != "Cob") { |
| f_header_ << |
| indent() << service_name_ << style << "Client" << short_suffix << |
| "(" << prot_ptr << " prot) :" << |
| endl; |
| if (extends.empty()) { |
| f_header_ << |
| indent() << " piprot_(prot)," << endl << |
| indent() << " poprot_(prot) {" << endl << |
| indent() << " iprot_ = prot.get();" << endl << |
| indent() << " oprot_ = prot.get();" << endl << |
| indent() << "}" << endl; |
| } else { |
| f_header_ << |
| indent() << " " << extends << style << client_suffix << |
| "(prot, prot) {}" << endl; |
| } |
| |
| f_header_ << |
| indent() << service_name_ << style << "Client" << short_suffix << |
| "(" << prot_ptr << " iprot, " << prot_ptr << " oprot) :" << endl; |
| if (extends.empty()) { |
| f_header_ << |
| indent() << " piprot_(iprot)," << endl << |
| indent() << " poprot_(oprot) {" << endl << |
| indent() << " iprot_ = iprot.get();" << endl << |
| indent() << " oprot_ = oprot.get();" << endl << |
| indent() << "}" << endl; |
| } else { |
| f_header_ << |
| indent() << " " << extends << style << client_suffix << |
| "(iprot, oprot) {}" << endl; |
| } |
| |
| // Generate getters for the protocols. |
| // Note that these are not currently templated for simplicity. |
| // TODO(simpkins): should they be templated? |
| f_header_ << |
| indent() << "boost::shared_ptr< ::apache::thrift::protocol::TProtocol> getInputProtocol() {" << endl << |
| indent() << " return " << _this << "piprot_;" << endl << |
| indent() << "}" << endl; |
| |
| f_header_ << |
| indent() << "boost::shared_ptr< ::apache::thrift::protocol::TProtocol> getOutputProtocol() {" << endl << |
| indent() << " return " << _this << "poprot_;" << endl << |
| indent() << "}" << endl; |
| |
| } else /* if (style == "Cob") */ { |
| f_header_ << |
| indent() << service_name_ << style << "Client" << short_suffix << "(" << |
| "boost::shared_ptr< ::apache::thrift::async::TAsyncChannel> channel, " << |
| "::apache::thrift::protocol::TProtocolFactory* protocolFactory) :" << |
| endl; |
| if (extends.empty()) { |
| f_header_ << |
| indent() << " channel_(channel)," << endl << |
| indent() << " itrans_(new ::apache::thrift::transport::TMemoryBuffer())," << endl << |
| indent() << " otrans_(new ::apache::thrift::transport::TMemoryBuffer())," << endl; |
| if (gen_templates_) { |
| // TProtocolFactory classes return generic TProtocol pointers. |
| // We have to dynamic cast to the Protocol_ type we are expecting. |
| f_header_ << |
| indent() << " piprot_(boost::dynamic_pointer_cast<Protocol_>(" << |
| "protocolFactory->getProtocol(itrans_)))," << endl << |
| indent() << " poprot_(boost::dynamic_pointer_cast<Protocol_>(" << |
| "protocolFactory->getProtocol(otrans_))) {" << endl; |
| // Throw a TException if either dynamic cast failed. |
| f_header_ << |
| indent() << " if (!piprot_ || !poprot_) {" << endl << |
| indent() << " throw ::apache::thrift::TException(\"" << |
| "TProtocolFactory returned unexpected protocol type in " << |
| service_name_ << style << "Client" << short_suffix << |
| " constructor\");" << endl << |
| indent() << " }" << endl; |
| } else { |
| f_header_ << |
| indent() << " piprot_(protocolFactory->getProtocol(itrans_))," << |
| endl << |
| indent() << " poprot_(protocolFactory->getProtocol(otrans_)) {" << |
| endl; |
| } |
| f_header_ << |
| indent() << " iprot_ = piprot_.get();" << endl << |
| indent() << " oprot_ = poprot_.get();" << endl << |
| indent() << "}" << endl; |
| } else { |
| f_header_ << |
| indent() << " " << extends << style << client_suffix << |
| "(channel, protocolFactory) {}" << endl; |
| } |
| } |
| |
| if (style == "Cob") { |
| f_header_ << |
| indent() << "boost::shared_ptr< ::apache::thrift::async::TAsyncChannel> getChannel() {" << endl << |
| indent() << " return " << _this << "channel_;" << endl << |
| indent() << "}" << endl; |
| if (!gen_no_client_completion_) { |
| f_header_ << |
| indent() << "virtual void completed__(bool /* success */) {}" << endl; |
| } |
| } |
| |
| vector<t_function*> functions = tservice->get_functions(); |
| vector<t_function*>::const_iterator f_iter; |
| for (f_iter = functions.begin(); f_iter != functions.end(); ++f_iter) { |
| indent(f_header_) << function_signature(*f_iter, ifstyle) << ";" << endl; |
| // TODO(dreiss): Use private inheritance to avoid generating thise in cob-style. |
| t_function send_function(g_type_void, |
| string("send_") + (*f_iter)->get_name(), |
| (*f_iter)->get_arglist()); |
| indent(f_header_) << function_signature(&send_function, "") << ";" << endl; |
| if (!(*f_iter)->is_oneway()) { |
| t_struct noargs(program_); |
| t_function recv_function((*f_iter)->get_returntype(), |
| string("recv_") + (*f_iter)->get_name(), |
| &noargs); |
| indent(f_header_) << function_signature(&recv_function, "") << ";" << endl; |
| } |
| } |
| indent_down(); |
| |
| if (extends.empty()) { |
| f_header_ << |
| " protected:" << endl; |
| indent_up(); |
| |
| if (style == "Cob") { |
| f_header_ << |
| indent() << "boost::shared_ptr< ::apache::thrift::async::TAsyncChannel> channel_;" << endl << |
| indent() << "boost::shared_ptr< ::apache::thrift::transport::TMemoryBuffer> itrans_;" << endl << |
| indent() << "boost::shared_ptr< ::apache::thrift::transport::TMemoryBuffer> otrans_;" << endl; |
| } |
| f_header_ << |
| indent() << prot_ptr << " piprot_;" << endl << |
| indent() << prot_ptr << " poprot_;" << endl << |
| indent() << protocol_type << "* iprot_;" << endl << |
| indent() << protocol_type << "* oprot_;" << endl; |
| |
| indent_down(); |
| } |
| |
| f_header_ << |
| "};" << endl << |
| endl; |
| |
| if (gen_templates_) { |
| // Output a backwards compatibility typedef using |
| // TProtocol as the template parameter. |
| f_header_ << |
| "typedef " << service_name_ << style << |
| "ClientT< ::apache::thrift::protocol::TProtocol> " << |
| service_name_ << style << "Client;" << endl << |
| endl; |
| } |
| |
| string scope = service_name_ + style + client_suffix + "::"; |
| |
| // Generate client method implementations |
| for (f_iter = functions.begin(); f_iter != functions.end(); ++f_iter) { |
| string funname = (*f_iter)->get_name(); |
| |
| // Open function |
| if (gen_templates_) { |
| indent(out) << template_header; |
| } |
| indent(out) << |
| function_signature(*f_iter, ifstyle, scope) << endl; |
| scope_up(out); |
| indent(out) << |
| "send_" << funname << "("; |
| |
| // Get the struct of function call params |
| t_struct* arg_struct = (*f_iter)->get_arglist(); |
| |
| // Declare the function arguments |
| const vector<t_field*>& fields = arg_struct->get_members(); |
| vector<t_field*>::const_iterator fld_iter; |
| bool first = true; |
| for (fld_iter = fields.begin(); fld_iter != fields.end(); ++fld_iter) { |
| if (first) { |
| first = false; |
| } else { |
| out << ", "; |
| } |
| out << (*fld_iter)->get_name(); |
| } |
| out << ");" << endl; |
| |
| if (style != "Cob") { |
| if (!(*f_iter)->is_oneway()) { |
| out << indent(); |
| if (!(*f_iter)->get_returntype()->is_void()) { |
| if (is_complex_type((*f_iter)->get_returntype())) { |
| out << "recv_" << funname << "(_return);" << endl; |
| } else { |
| out << "return recv_" << funname << "();" << endl; |
| } |
| } else { |
| out << |
| "recv_" << funname << "();" << endl; |
| } |
| } |
| } else { |
| if (!(*f_iter)->is_oneway()) { |
| out << |
| indent() << _this << "channel_->sendAndRecvMessage(" << |
| "std::tr1::bind(cob, this), " << _this << "otrans_.get(), " << |
| _this << "itrans_.get());" << endl; |
| } else { |
| out << |
| indent() << _this << "channel_->sendMessage(" << |
| "std::tr1::bind(cob, this), " << _this << "otrans_.get());" << endl; |
| } |
| } |
| scope_down(out); |
| out << endl; |
| |
| //if (style != "Cob") // TODO(dreiss): Libify the client and don't generate this for cob-style |
| if (true) { |
| // Function for sending |
| t_function send_function(g_type_void, |
| string("send_") + (*f_iter)->get_name(), |
| (*f_iter)->get_arglist()); |
| |
| // Open the send function |
| if (gen_templates_) { |
| indent(out) << template_header; |
| } |
| indent(out) << |
| function_signature(&send_function, "", scope) << endl; |
| scope_up(out); |
| |
| // Function arguments and results |
| string argsname = tservice->get_name() + "_" + (*f_iter)->get_name() + "_pargs"; |
| string resultname = tservice->get_name() + "_" + (*f_iter)->get_name() + "_presult"; |
| |
| // Serialize the request |
| out << |
| indent() << "int32_t cseqid = 0;" << endl << |
| indent() << _this << "oprot_->writeMessageBegin(\"" << |
| (*f_iter)->get_name() << |
| "\", ::apache::thrift::protocol::T_CALL, cseqid);" << endl << |
| endl << |
| indent() << argsname << " args;" << endl; |
| |
| for (fld_iter = fields.begin(); fld_iter != fields.end(); ++fld_iter) { |
| out << |
| indent() << "args." << (*fld_iter)->get_name() << " = &" << (*fld_iter)->get_name() << ";" << endl; |
| } |
| |
| out << |
| indent() << "args.write(" << _this << "oprot_);" << endl << |
| endl << |
| indent() << _this << "oprot_->writeMessageEnd();" << endl << |
| indent() << _this << "oprot_->getTransport()->writeEnd();" << endl << |
| indent() << _this << "oprot_->getTransport()->flush();" << endl; |
| |
| scope_down(out); |
| out << endl; |
| |
| // Generate recv function only if not an oneway function |
| if (!(*f_iter)->is_oneway()) { |
| t_struct noargs(program_); |
| t_function recv_function((*f_iter)->get_returntype(), |
| string("recv_") + (*f_iter)->get_name(), |
| &noargs); |
| // Open the recv function |
| if (gen_templates_) { |
| indent(out) << template_header; |
| } |
| indent(out) << |
| function_signature(&recv_function, "", scope) << endl; |
| scope_up(out); |
| |
| out << |
| endl << |
| indent() << "int32_t rseqid = 0;" << endl << |
| indent() << "std::string fname;" << endl << |
| indent() << "::apache::thrift::protocol::TMessageType mtype;" << endl; |
| if (style == "Cob" && !gen_no_client_completion_) { |
| out << |
| indent() << "bool completed = false;" << endl << endl << |
| indent() << "try {"; |
| indent_up(); |
| } |
| out << endl << |
| indent() << _this << "iprot_->readMessageBegin(fname, mtype, rseqid);" << endl << |
| indent() << "if (mtype == ::apache::thrift::protocol::T_EXCEPTION) {" << endl << |
| indent() << " ::apache::thrift::TApplicationException x;" << endl << |
| indent() << " x.read(" << _this << "iprot_);" << endl << |
| indent() << " " << _this << "iprot_->readMessageEnd();" << endl << |
| indent() << " " << _this << "iprot_->getTransport()->readEnd();" << |
| endl; |
| if (style == "Cob" && !gen_no_client_completion_) { |
| out << |
| indent() << " completed = true;" << endl << |
| indent() << " completed__(true);" << endl; |
| } |
| out << |
| indent() << " throw x;" << endl << |
| indent() << "}" << endl << |
| indent() << "if (mtype != ::apache::thrift::protocol::T_REPLY) {" << endl << |
| indent() << " " << _this << "iprot_->skip(" << |
| "::apache::thrift::protocol::T_STRUCT);" << endl << |
| indent() << " " << _this << "iprot_->readMessageEnd();" << endl << |
| indent() << " " << _this << "iprot_->getTransport()->readEnd();" << |
| endl; |
| if (style == "Cob" && !gen_no_client_completion_) { |
| out << |
| indent() << " completed = true;" << endl << |
| indent() << " completed__(false);" << endl; |
| } |
| out << |
| indent() << "}" << endl << |
| indent() << "if (fname.compare(\"" << (*f_iter)->get_name() << "\") != 0) {" << endl << |
| indent() << " " << _this << "iprot_->skip(" << |
| "::apache::thrift::protocol::T_STRUCT);" << endl << |
| indent() << " " << _this << "iprot_->readMessageEnd();" << endl << |
| indent() << " " << _this << "iprot_->getTransport()->readEnd();" << |
| endl; |
| if (style == "Cob" && !gen_no_client_completion_) { |
| out << |
| indent() << " completed = true;" << endl << |
| indent() << " completed__(false);" << endl; |
| } |
| out << |
| indent() << "}" << endl; |
| |
| if (!(*f_iter)->get_returntype()->is_void() && |
| !is_complex_type((*f_iter)->get_returntype())) { |
| t_field returnfield((*f_iter)->get_returntype(), "_return"); |
| out << |
| indent() << declare_field(&returnfield) << endl; |
| } |
| |
| out << |
| indent() << resultname << " result;" << endl; |
| |
| if (!(*f_iter)->get_returntype()->is_void()) { |
| out << |
| indent() << "result.success = &_return;" << endl; |
| } |
| |
| out << |
| indent() << "result.read(" << _this << "iprot_);" << endl << |
| indent() << _this << "iprot_->readMessageEnd();" << endl << |
| indent() << _this << "iprot_->getTransport()->readEnd();" << endl << |
| endl; |
| |
| // Careful, only look for _result if not a void function |
| if (!(*f_iter)->get_returntype()->is_void()) { |
| if (is_complex_type((*f_iter)->get_returntype())) { |
| out << |
| indent() << "if (result.__isset.success) {" << endl << |
| indent() << " // _return pointer has now been filled" << endl; |
| if (style == "Cob" && !gen_no_client_completion_) { |
| out << |
| indent() << " completed = true;" << endl << |
| indent() << " completed__(true);" << endl; |
| } |
| out << |
| indent() << " return;" << endl << |
| indent() << "}" << endl; |
| } else { |
| out << |
| indent() << "if (result.__isset.success) {" << endl; |
| if (style == "Cob" && !gen_no_client_completion_) { |
| out << |
| indent() << " completed = true;" << endl << |
| indent() << " completed__(true);" << endl; |
| } |
| out << |
| indent() << " return _return;" << endl << |
| indent() << "}" << endl; |
| } |
| } |
| |
| t_struct* xs = (*f_iter)->get_xceptions(); |
| const std::vector<t_field*>& xceptions = xs->get_members(); |
| vector<t_field*>::const_iterator x_iter; |
| for (x_iter = xceptions.begin(); x_iter != xceptions.end(); ++x_iter) { |
| out << |
| indent() << "if (result.__isset." << (*x_iter)->get_name() << ") {" << endl; |
| if (style == "Cob" && !gen_no_client_completion_) { |
| out << |
| indent() << " completed = true;" << endl << |
| indent() << " completed__(true);" << endl; |
| } |
| out << |
| indent() << " throw result." << (*x_iter)->get_name() << ";" << endl << |
| indent() << "}" << endl; |
| } |
| |
| // We only get here if we are a void function |
| if ((*f_iter)->get_returntype()->is_void()) { |
| if (style == "Cob" && !gen_no_client_completion_) { |
| out << |
| indent() << "completed = true;" << endl << |
| indent() << "completed__(true);" << endl; |
| } |
| indent(out) << |
| "return;" << endl; |
| } else { |
| if (style == "Cob" && !gen_no_client_completion_) { |
| out << |
| indent() << "completed = true;" << endl << |
| indent() << "completed__(true);" << endl; |
| } |
| out << |
| indent() << "throw ::apache::thrift::TApplicationException(::apache::thrift::TApplicationException::MISSING_RESULT, \"" << (*f_iter)->get_name() << " failed: unknown result\");" << endl; |
| } |
| if (style == "Cob" && !gen_no_client_completion_) { |
| indent_down(); |
| out << |
| indent() << "} catch (...) {" << endl << |
| indent() << " if (!completed) {" << endl << |
| indent() << " completed__(false);" << endl << |
| indent() << " }" << endl << |
| indent() << " throw;" << endl << |
| indent() << "}" << endl; |
| } |
| // Close function |
| scope_down(out); |
| out << endl; |
| } |
| } |
| } |
| } |
| |
| /** |
| * Generates a service processor definition. |
| * |
| * @param tservice The service to generate a processor for. |
| */ |
| void t_cpp_generator::generate_service_processor(t_service* tservice, string style) { |
| string ifstyle; |
| string pstyle; |
| string finish_cob; |
| string finish_cob_decl; |
| string cob_arg; |
| string call_context = ", void* callContext"; |
| string call_context_arg = ", callContext"; |
| string call_context_decl = ", void*"; |
| string ret_type = "bool "; |
| if (style == "Cob") { |
| ifstyle = "CobSv"; |
| pstyle = "Async"; |
| finish_cob = "std::tr1::function<void(bool ok)> cob, "; |
| finish_cob_decl = "std::tr1::function<void(bool ok)>, "; |
| call_context = ""; // TODO(edhall) remove when callContext is aded to TAsyncProcessor |
| call_context_arg = ""; // ditto |
| call_context_decl = ""; // ditto |
| cob_arg = "cob, "; |
| ret_type = "void "; |
| } |
| |
| // Generate the dispatch methods |
| vector<t_function*> functions = tservice->get_functions(); |
| vector<t_function*>::iterator f_iter; |
| |
| string extends = ""; |
| string extends_processor = ""; |
| if (tservice->get_extends() != NULL) { |
| extends = type_name(tservice->get_extends()) + pstyle + "Processor"; |
| if (gen_templates_) { |
| // TODO(simpkins): If gen_templates_ is enabled, we currently assume all |
| // parent services were also generated with templates enabled. |
| extends += "T<Protocol_>"; |
| } |
| extends_processor = ", public " + extends; |
| } |
| |
| string template_header, template_suffix, typename_str; |
| string class_suffix = "Processor"; |
| if (gen_templates_) { |
| class_suffix = "ProcessorT"; |
| template_header = "template <class Protocol_>\n"; |
| template_suffix = "<Protocol_>"; |
| typename_str = "typename "; |
| } |
| |
| // Generate the header portion |
| f_header_ << |
| template_header << |
| "class " << service_name_ << pstyle << class_suffix << |
| " : virtual public ::apache::thrift::T" << pstyle << "Processor" << |
| extends_processor << " {" << endl; |
| |
| // Protected data members |
| f_header_ << |
| " protected:" << endl; |
| indent_up(); |
| f_header_ << |
| indent() << "boost::shared_ptr<" << service_name_ << ifstyle << "If> iface_;" << endl; |
| f_header_ << |
| indent() << "virtual " << ret_type << "process_fn(" << finish_cob << "::apache::thrift::protocol::TProtocol* iprot, ::apache::thrift::protocol::TProtocol* oprot, std::string& fname, int32_t seqid" << call_context << ");" << endl; |
| indent_down(); |
| |
| // Process function declarations |
| f_header_ << |
| " private:" << endl; |
| indent_up(); |
| f_header_ << |
| indent() << "std::map<std::string, void (" << |
| service_name_ << pstyle << class_suffix << "::*)(" << finish_cob_decl << |
| "int32_t, ::apache::thrift::protocol::TProtocol*, " << |
| "::apache::thrift::protocol::TProtocol*" << call_context_decl << |
| ")> processMap_;" << endl; |
| for (f_iter = functions.begin(); f_iter != functions.end(); ++f_iter) { |
| indent(f_header_) << |
| "void process_" << (*f_iter)->get_name() << "(" << finish_cob << "int32_t seqid, ::apache::thrift::protocol::TProtocol* iprot, ::apache::thrift::protocol::TProtocol* oprot" << call_context << ");" << endl; |
| if (gen_templates_) { |
| indent(f_header_) << |
| "void process_" << (*f_iter)->get_name() << "(" << finish_cob << |
| "int32_t seqid, Protocol_* iprot, Protocol_* oprot" << |
| call_context << ");" << endl; |
| } |
| if (style == "Cob") { |
| // XXX Factor this out, even if it is a pain. |
| string ret_arg = ((*f_iter)->get_returntype()->is_void() |
| ? "" |
| : ", const " + type_name((*f_iter)->get_returntype()) + "& _return"); |
| f_header_ << |
| indent() << "void return_" << (*f_iter)->get_name() << |
| "(std::tr1::function<void(bool ok)> cob, int32_t seqid, " << |
| "::apache::thrift::protocol::TProtocol* oprot, " << |
| "void* ctx" << ret_arg << ");" << endl; |
| if (gen_templates_) { |
| f_header_ << |
| indent() << "void return_" << (*f_iter)->get_name() << |
| "(std::tr1::function<void(bool ok)> cob, int32_t seqid, " << |
| "Protocol_* oprot, void* ctx" << ret_arg << ");" << endl; |
| } |
| // XXX Don't declare throw if it doesn't exist |
| f_header_ << |
| indent() << "void throw_" << (*f_iter)->get_name() << |
| "(std::tr1::function<void(bool ok)> cob, int32_t seqid, " << |
| "::apache::thrift::protocol::TProtocol* oprot, void* ctx, " << |
| "::apache::thrift::TDelayedException* _throw);" << endl; |
| if (gen_templates_) { |
| f_header_ << |
| indent() << "void throw_" << (*f_iter)->get_name() << |
| "(std::tr1::function<void(bool ok)> cob, int32_t seqid, " << |
| "Protocol_* oprot, void* ctx, " << |
| "::apache::thrift::TDelayedException* _throw);" << endl; |
| } |
| } |
| } |
| indent_down(); |
| |
| indent_up(); |
| string declare_map = ""; |
| indent_up(); |
| |
| for (f_iter = functions.begin(); f_iter != functions.end(); ++f_iter) { |
| declare_map += indent(); |
| declare_map += "processMap_[\""; |
| declare_map += (*f_iter)->get_name(); |
| declare_map += "\"] = &"; |
| declare_map += service_name_; |
| declare_map += pstyle; |
| declare_map += class_suffix; |
| declare_map += "::process_"; |
| declare_map += (*f_iter)->get_name(); |
| declare_map += ";\n"; |
| } |
| indent_down(); |
| |
| f_header_ << |
| " public:" << endl << |
| indent() << service_name_ << pstyle << class_suffix << |
| "(boost::shared_ptr<" << service_name_ << ifstyle << "If> iface) :" << endl; |
| if (extends.empty()) { |
| f_header_ << |
| indent() << " iface_(iface) {" << endl; |
| } else { |
| f_header_ << |
| indent() << " " << extends << "(iface)," << endl << |
| indent() << " iface_(iface) {" << endl; |
| } |
| f_header_ << |
| declare_map << |
| indent() << "}" << endl << |
| endl << |
| indent() << "virtual " << ret_type << "process(" << finish_cob << "boost::shared_ptr< ::apache::thrift::protocol::TProtocol> piprot, boost::shared_ptr< ::apache::thrift::protocol::TProtocol> poprot" << call_context << ");" << endl << |
| indent() << "virtual ~" << service_name_ << pstyle << class_suffix << |
| "() {}" << endl; |
| indent_down(); |
| f_header_ << |
| "};" << endl << endl; |
| |
| // Generate the server implementation |
| std::ofstream& out = (gen_templates_ ? f_service_tcc_ : f_service_); |
| out << |
| template_header << |
| ret_type << service_name_ << pstyle << class_suffix << template_suffix << |
| "::process(" << finish_cob << |
| "boost::shared_ptr< ::apache::thrift::protocol::TProtocol> piprot, " << |
| "boost::shared_ptr< ::apache::thrift::protocol::TProtocol> poprot" << |
| call_context << ") {" << endl; |
| indent_up(); |
| |
| out << |
| endl << |
| indent() << "::apache::thrift::protocol::TProtocol* iprot = piprot.get();" << endl << |
| indent() << "::apache::thrift::protocol::TProtocol* oprot = poprot.get();" << endl << |
| indent() << "std::string fname;" << endl << |
| indent() << "::apache::thrift::protocol::TMessageType mtype;" << endl << |
| indent() << "int32_t seqid;" << endl << |
| endl << |
| indent() << "iprot->readMessageBegin(fname, mtype, seqid);" << endl << |
| endl << |
| indent() << "if (mtype != ::apache::thrift::protocol::T_CALL && mtype != ::apache::thrift::protocol::T_ONEWAY) {" << endl << |
| indent() << " iprot->skip(::apache::thrift::protocol::T_STRUCT);" << endl << |
| indent() << " iprot->readMessageEnd();" << endl << |
| indent() << " iprot->getTransport()->readEnd();" << endl << |
| indent() << " ::apache::thrift::TApplicationException x(::apache::thrift::TApplicationException::INVALID_MESSAGE_TYPE);" << endl << |
| indent() << " oprot->writeMessageBegin(fname, ::apache::thrift::protocol::T_EXCEPTION, seqid);" << endl << |
| indent() << " x.write(oprot);" << endl << |
| indent() << " oprot->writeMessageEnd();" << endl << |
| indent() << " oprot->getTransport()->writeEnd();" << endl << |
| indent() << " oprot->getTransport()->flush();" << endl << |
| indent() << (style == "Cob" ? " return cob(false);" : " return false;") << endl << |
| indent() << "}" << endl << |
| endl << |
| indent() << "return process_fn(" << (style == "Cob" ? "cob, " : "") |
| << "iprot, oprot, fname, seqid" << call_context_arg << ");" << |
| endl; |
| |
| indent_down(); |
| out << |
| indent() << "}" << endl << |
| endl; |
| |
| out << |
| template_header << |
| ret_type << service_name_ << pstyle << class_suffix << template_suffix << |
| "::process_fn(" << finish_cob << |
| "::apache::thrift::protocol::TProtocol* iprot, " << |
| "::apache::thrift::protocol::TProtocol* oprot, " << |
| "std::string& fname, int32_t seqid" << call_context << ") {" << endl; |
| indent_up(); |
| |
| // HOT: member function pointer map |
| out << |
| indent() << typename_str << "std::map<std::string, void (" << |
| service_name_ << pstyle << class_suffix << "::*)(" << finish_cob_decl << |
| "int32_t, ::apache::thrift::protocol::TProtocol*, " << |
| "::apache::thrift::protocol::TProtocol*" << call_context_decl << ")>::iterator pfn;" << endl << |
| indent() << "pfn = processMap_.find(fname);" << endl << |
| indent() << "if (pfn == processMap_.end()) {" << endl; |
| if (extends.empty()) { |
| out << |
| indent() << " iprot->skip(::apache::thrift::protocol::T_STRUCT);" << endl << |
| indent() << " iprot->readMessageEnd();" << endl << |
| indent() << " iprot->getTransport()->readEnd();" << endl << |
| indent() << " ::apache::thrift::TApplicationException x(::apache::thrift::TApplicationException::UNKNOWN_METHOD, \"Invalid method name: '\"+fname+\"'\");" << endl << |
| indent() << " oprot->writeMessageBegin(fname, ::apache::thrift::protocol::T_EXCEPTION, seqid);" << endl << |
| indent() << " x.write(oprot);" << endl << |
| indent() << " oprot->writeMessageEnd();" << endl << |
| indent() << " oprot->getTransport()->writeEnd();" << endl << |
| indent() << " oprot->getTransport()->flush();" << endl << |
| indent() << (style == "Cob" ? " return cob(false);" : " return false;") << endl; |
| } else { |
| out << |
| indent() << " return " |
| << extends << "::process_fn(" |
| << (style == "Cob" ? "cob, " : "") |
| << "iprot, oprot, fname, seqid" << call_context_arg << ");" << endl; |
| } |
| out << |
| indent() << "}" << endl << |
| indent() << "(this->*(pfn->second))(" << cob_arg << "seqid, iprot, oprot" << call_context_arg << ");" << endl; |
| |
| // TODO(dreiss): return pfn ret? |
| if (style == "Cob") { |
| out << |
| indent() << "return;" << endl; |
| } else { |
| out << |
| indent() << "return true;" << endl; |
| } |
| |
| indent_down(); |
| out << |
| "}" << endl << |
| endl; |
| |
| // Generate the process subfunctions |
| for (f_iter = functions.begin(); f_iter != functions.end(); ++f_iter) { |
| if (gen_templates_) { |
| generate_process_function(tservice, *f_iter, style, false); |
| generate_process_function(tservice, *f_iter, style, true); |
| } else { |
| generate_process_function(tservice, *f_iter, style, false); |
| } |
| } |
| |
| if (gen_templates_) { |
| // Generate a backwards compatible typedef, for callers who don't know |
| // about the new template-style code. |
| // |
| // We can't use TProtocol as the template parameter, since ProcessorT |
| // provides overloaded versions of most methods, one of which accepts |
| // TProtocol pointers, and one which accepts Protocol_ pointers. This |
| // results in a compile error if instantiated with Protocol_ == TProtocol. |
| // Therefore, we define TDummyProtocol solely so we can use it as the |
| // template parameter here. |
| f_header_ << |
| "typedef " << service_name_ << pstyle << |
| "ProcessorT< ::apache::thrift::protocol::TDummyProtocol> " << |
| service_name_ << pstyle << "Processor;" << endl << endl; |
| } |
| } |
| |
| /** |
| * Generates a struct and helpers for a function. |
| * |
| * @param tfunction The function |
| */ |
| void t_cpp_generator::generate_function_helpers(t_service* tservice, |
| t_function* tfunction) { |
| if (tfunction->is_oneway()) { |
| return; |
| } |
| |
| std::ofstream& out = (gen_templates_ ? f_service_tcc_ : f_service_); |
| |
| t_struct result(program_, tservice->get_name() + "_" + tfunction->get_name() + "_result"); |
| t_field success(tfunction->get_returntype(), "success", 0); |
| if (!tfunction->get_returntype()->is_void()) { |
| result.append(&success); |
| } |
| |
| t_struct* xs = tfunction->get_xceptions(); |
| const vector<t_field*>& fields = xs->get_members(); |
| vector<t_field*>::const_iterator f_iter; |
| for (f_iter = fields.begin(); f_iter != fields.end(); ++f_iter) { |
| result.append(*f_iter); |
| } |
| |
| generate_struct_definition(f_header_, &result, false); |
| generate_struct_reader(out, &result); |
| generate_struct_result_writer(out, &result); |
| |
| result.set_name(tservice->get_name() + "_" + tfunction->get_name() + "_presult"); |
| generate_struct_definition(f_header_, &result, false, true, true, gen_cob_style_); |
| generate_struct_reader(out, &result, true); |
| if (gen_cob_style_) { |
| generate_struct_writer(out, &result, true); |
| } |
| |
| } |
| |
| /** |
| * Generates a process function definition. |
| * |
| * @param tfunction The function to write a dispatcher for |
| */ |
| void t_cpp_generator::generate_process_function(t_service* tservice, |
| t_function* tfunction, |
| string style, |
| bool specialized) { |
| t_struct* arg_struct = tfunction->get_arglist(); |
| const std::vector<t_field*>& fields = arg_struct->get_members(); |
| vector<t_field*>::const_iterator f_iter; |
| |
| t_struct* xs = tfunction->get_xceptions(); |
| const std::vector<t_field*>& xceptions = xs->get_members(); |
| vector<t_field*>::const_iterator x_iter; |
| string service_func_name = tservice->get_name() + "." + tfunction->get_name(); |
| |
| std::ofstream& out = (gen_templates_ ? f_service_tcc_ : f_service_); |
| |
| string prot_type = |
| (specialized ? "Protocol_" : "::apache::thrift::protocol::TProtocol"); |
| string class_suffix; |
| if (gen_templates_) { |
| class_suffix = "T<Protocol_>"; |
| } |
| |
| // I tried to do this as one function. I really did. But it was too hard. |
| if (style != "Cob") { |
| // Open function |
| if (gen_templates_) { |
| out << |
| indent() << "template <class Protocol_>" << endl; |
| } |
| const bool unnamed_oprot_seqid = tfunction->is_oneway() && |
| !(gen_templates_ && !specialized); |
| out << |
| "void " << tservice->get_name() << "Processor" << class_suffix << "::" << |
| "process_" << tfunction->get_name() << "(" << |
| "int32_t" << (unnamed_oprot_seqid ? ", " : " seqid, ") << |
| prot_type << "* iprot, " << |
| prot_type << "*" << (unnamed_oprot_seqid ? ", " : " oprot, ") << |
| "void* callContext)" << endl; |
| scope_up(out); |
| |
| if (gen_templates_ && !specialized) { |
| // If these are instances of Protocol_, instead of any old TProtocol, |
| // use the specialized process function instead. |
| out << |
| indent() << "Protocol_* _iprot = dynamic_cast<Protocol_*>(iprot);" << |
| endl << |
| indent() << "Protocol_* _oprot = dynamic_cast<Protocol_*>(oprot);" << |
| endl << |
| indent() << "if (_iprot && _oprot) {" << endl << |
| indent() << " return process_" << tfunction->get_name() << |
| "(seqid, _iprot, _oprot, callContext);" << endl << |
| indent() << "}" << endl << |
| indent() << "T_GENERIC_PROTOCOL(this, iprot, _iprot);" << endl << |
| indent() << "T_GENERIC_PROTOCOL(this, oprot, _oprot);" << endl << endl; |
| } |
| |
| string argsname = tservice->get_name() + "_" + tfunction->get_name() + "_args"; |
| string resultname = tservice->get_name() + "_" + tfunction->get_name() + "_result"; |
| |
| out << |
| indent() << "void* ctx = NULL;" << endl << |
| indent() << "if (eventHandler_.get() != NULL) {" << endl << |
| indent() << " ctx = eventHandler_->getContext(\"" << service_func_name << "\", callContext);" << endl << |
| indent() << "}" << endl << |
| indent() << "::apache::thrift::TProcessorContextFreer freer(eventHandler_.get(), ctx, \"" << service_func_name << "\");" << endl << endl << |
| indent() << "if (eventHandler_.get() != NULL) {" << endl << |
| indent() << " eventHandler_->preRead(ctx, \"" << service_func_name << "\");" << endl << |
| indent() << "}" << endl << endl << |
| indent() << argsname << " args;" << endl << |
| indent() << "args.read(iprot);" << endl << |
| indent() << "iprot->readMessageEnd();" << endl << |
| indent() << "uint32_t bytes = iprot->getTransport()->readEnd();" << endl << endl << |
| indent() << "if (eventHandler_.get() != NULL) {" << endl << |
| indent() << " eventHandler_->postRead(ctx, \"" << service_func_name << "\", bytes);" << endl << |
| indent() << "}" << endl << |
| endl; |
| |
| // Declare result |
| if (!tfunction->is_oneway()) { |
| out << |
| indent() << resultname << " result;" << endl; |
| } |
| |
| // Try block for functions with exceptions |
| out << |
| indent() << "try {" << endl; |
| indent_up(); |
| |
| // Generate the function call |
| bool first = true; |
| out << indent(); |
| if (!tfunction->is_oneway() && !tfunction->get_returntype()->is_void()) { |
| if (is_complex_type(tfunction->get_returntype())) { |
| first = false; |
| out << "iface_->" << tfunction->get_name() << "(result.success"; |
| } else { |
| out << "result.success = iface_->" << tfunction->get_name() << "("; |
| } |
| } else { |
| out << |
| "iface_->" << tfunction->get_name() << "("; |
| } |
| for (f_iter = fields.begin(); f_iter != fields.end(); ++f_iter) { |
| if (first) { |
| first = false; |
| } else { |
| out << ", "; |
| } |
| out << "args." << (*f_iter)->get_name(); |
| } |
| out << ");" << endl; |
| |
| // Set isset on success field |
| if (!tfunction->is_oneway() && !tfunction->get_returntype()->is_void()) { |
| out << |
| indent() << "result.__isset.success = true;" << endl; |
| } |
| |
| indent_down(); |
| out << indent() << "}"; |
| |
| if (!tfunction->is_oneway()) { |
| for (x_iter = xceptions.begin(); x_iter != xceptions.end(); ++x_iter) { |
| out << " catch (" << type_name((*x_iter)->get_type()) << " &" << (*x_iter)->get_name() << ") {" << endl; |
| indent_up(); |
| out << |
| indent() << "result." << (*x_iter)->get_name() << " = " << (*x_iter)->get_name() << ";" << endl << |
| indent() << "result.__isset." << (*x_iter)->get_name() << " = true;" << endl; |
| indent_down(); |
| out << indent() << "}"; |
| } |
| } |
| |
| out << " catch (const std::exception& e) {" << endl; |
| |
| indent_up(); |
| out << |
| indent() << "if (eventHandler_.get() != NULL) {" << endl << |
| indent() << " eventHandler_->handlerError(ctx, \"" << service_func_name << "\");" << endl << |
| indent() << "}" << endl; |
| |
| if (!tfunction->is_oneway()) { |
| out << |
| endl << |
| indent() << "::apache::thrift::TApplicationException x(e.what());" << endl << |
| indent() << "oprot->writeMessageBegin(\"" << tfunction->get_name() << "\", ::apache::thrift::protocol::T_EXCEPTION, seqid);" << endl << |
| indent() << "x.write(oprot);" << endl << |
| indent() << "oprot->writeMessageEnd();" << endl << |
| indent() << "oprot->getTransport()->writeEnd();" << endl << |
| indent() << "oprot->getTransport()->flush();" << endl; |
| } |
| out << indent() << "return;" << endl; |
| indent_down(); |
| out << indent() << "}" << endl << endl; |
| |
| // Shortcut out here for oneway functions |
| if (tfunction->is_oneway()) { |
| out << |
| indent() << "if (eventHandler_.get() != NULL) {" << endl << |
| indent() << " eventHandler_->asyncComplete(ctx, \"" << service_func_name << "\");" << endl << |
| indent() << "}" << endl << endl << |
| indent() << "return;" << endl; |
| indent_down(); |
| out << "}" << endl << |
| endl; |
| return; |
| } |
| |
| // Serialize the result into a struct |
| out << |
| indent() << "if (eventHandler_.get() != NULL) {" << endl << |
| indent() << " eventHandler_->preWrite(ctx, \"" << service_func_name << "\");" << endl << |
| indent() << "}" << endl << endl << |
| indent() << "oprot->writeMessageBegin(\"" << tfunction->get_name() << "\", ::apache::thrift::protocol::T_REPLY, seqid);" << endl << |
| indent() << "result.write(oprot);" << endl << |
| indent() << "oprot->writeMessageEnd();" << endl << |
| indent() << "bytes = oprot->getTransport()->writeEnd();" << endl << |
| indent() << "oprot->getTransport()->flush();" << endl << endl << |
| indent() << "if (eventHandler_.get() != NULL) {" << endl << |
| indent() << " eventHandler_->postWrite(ctx, \"" << service_func_name << "\", bytes);" << endl << |
| indent() << "}" << endl; |
| |
| // Close function |
| scope_down(out); |
| out << endl; |
| } |
| |
| // Cob style. |
| else { |
| // Processor entry point. |
| // TODO(edhall) update for callContext when TEventServer is ready |
| if (gen_templates_) { |
| out << |
| indent() << "template <class Protocol_>" << endl; |
| } |
| out << |
| "void " << tservice->get_name() << "AsyncProcessor" << class_suffix << |
| "::process_" << tfunction->get_name() << |
| "(std::tr1::function<void(bool ok)> cob, int32_t seqid, " << |
| prot_type << "* iprot, " << prot_type << "* oprot)" << endl; |
| scope_up(out); |
| |
| // TODO(simpkins): we could try to consoldate this |
| // with the non-cob code above |
| if (gen_templates_ && !specialized) { |
| // If these are instances of Protocol_, instead of any old TProtocol, |
| // use the specialized process function instead. |
| out << |
| indent() << "Protocol_* _iprot = dynamic_cast<Protocol_*>(iprot);" << |
| endl << |
| indent() << "Protocol_* _oprot = dynamic_cast<Protocol_*>(oprot);" << |
| endl << |
| indent() << "if (_iprot && _oprot) {" << endl << |
| indent() << " return process_" << tfunction->get_name() << |
| "(cob, seqid, _iprot, _oprot);" << endl << |
| indent() << "}" << endl << |
| indent() << "T_GENERIC_PROTOCOL(this, iprot, _iprot);" << endl << |
| indent() << "T_GENERIC_PROTOCOL(this, oprot, _oprot);" << endl << endl; |
| } |
| |
| if (tfunction->is_oneway()) { |
| out << |
| indent() << "(void) seqid;" << endl << |
| indent() << "(void) oprot;" << endl; |
| } |
| |
| out << |
| indent() << tservice->get_name() + "_" + tfunction->get_name() + "_args" << " args;" << endl << |
| indent() << "void* ctx = NULL;" << endl << |
| indent() << "if (eventHandler_.get() != NULL) {" << endl << |
| indent() << " ctx = eventHandler_->getContext(\"" << service_func_name << "\", NULL);" << endl << |
| indent() << "}" << endl << |
| indent() << "::apache::thrift::TProcessorContextFreer freer(eventHandler_.get(), ctx, \"" << service_func_name << "\");" << endl << endl << |
| indent() << "try {" << endl; |
| indent_up(); |
| out << |
| indent() << "if (eventHandler_.get() != NULL) {" << endl << |
| indent() << " eventHandler_->preRead(ctx, \"" << service_func_name << "\");" << endl << |
| indent() << "}" << endl << |
| indent() << "args.read(iprot);" << endl << |
| indent() << "iprot->readMessageEnd();" << endl << |
| indent() << "uint32_t bytes = iprot->getTransport()->readEnd();" << endl << |
| indent() << "if (eventHandler_.get() != NULL) {" << endl << |
| indent() << " eventHandler_->postRead(ctx, \"" << service_func_name << "\", bytes);" << endl << |
| indent() << "}" << endl; |
| scope_down(out); |
| |
| // TODO(dreiss): Handle TExceptions? Expose to server? |
| out << |
| indent() << "catch (const std::exception& exn) {" << endl << |
| indent() << " if (eventHandler_.get() != NULL) {" << endl << |
| indent() << " eventHandler_->handlerError(ctx, \"" << service_func_name << "\");" << endl << |
| indent() << " }" << endl << |
| indent() << " return cob(false);" << endl << |
| indent() << "}" << endl; |
| |
| if (tfunction->is_oneway()) { |
| out << |
| indent() << "if (eventHandler_.get() != NULL) {" << endl << |
| indent() << " eventHandler_->asyncComplete(ctx, \"" << service_func_name << "\");" << endl << |
| indent() << "}" << endl; |
| } |
| // TODO(dreiss): Figure out a strategy for exceptions in async handlers. |
| out << |
| indent() << "freer.unregister();" << endl; |
| if (tfunction->is_oneway()) { |
| // No return. Just hand off our cob. |
| // TODO(dreiss): Call the cob immediately? |
| out << |
| indent() << "iface_->" << tfunction->get_name() << "(" << |
| "std::tr1::bind(cob, true)" << endl; |
| indent_up(); indent_up(); |
| } else { |
| string ret_arg, ret_placeholder; |
| if (!tfunction->get_returntype()->is_void()) { |
| ret_arg = ", const " + type_name(tfunction->get_returntype()) + |
| "& _return"; |
| ret_placeholder = ", std::tr1::placeholders::_1"; |
| } |
| |
| // When gen_templates_ is true, the return_ and throw_ functions are |
| // overloaded. We have to declare pointers to them so that the compiler |
| // can resolve the correct overloaded version. |
| out << |
| indent() << "void (" << tservice->get_name() << "AsyncProcessor" << |
| class_suffix << "::*return_fn)(std::tr1::function<void(bool ok)> " << |
| "cob, int32_t seqid, " << prot_type << "* oprot, void* ctx" << |
| ret_arg << ") =" << endl; |
| out << |
| indent() << " &" << tservice->get_name() << "AsyncProcessor" << |
| class_suffix << "::return_" << tfunction->get_name() << ";" << endl; |
| if (!xceptions.empty()) { |
| out << |
| indent() << "void (" << tservice->get_name() << "AsyncProcessor" << |
| class_suffix << "::*throw_fn)(std::tr1::function<void(bool ok)> " << |
| "cob, int32_t seqid, " << prot_type << "* oprot, void* ctx, " << |
| "::apache::thrift::TDelayedException* _throw) =" << endl; |
| out << |
| indent() << " &" << tservice->get_name() << "AsyncProcessor" << |
| class_suffix << "::throw_" << tfunction->get_name() << ";" << endl; |
| } |
| |
| out << |
| indent() << "iface_->" << tfunction->get_name() << "(" << endl; |
| indent_up(); indent_up(); |
| out << |
| indent() << "std::tr1::bind(return_fn, this, cob, seqid, oprot, ctx" << |
| ret_placeholder << ")"; |
| if (!xceptions.empty()) { |
| out |
| << ',' << endl << |
| indent() << "std::tr1::bind(throw_fn, this, cob, seqid, oprot, " << |
| "ctx, std::tr1::placeholders::_1)"; |
| } |
| } |
| |
| // XXX Whitespace cleanup. |
| for (f_iter = fields.begin(); f_iter != fields.end(); ++f_iter) { |
| out |
| << ',' << endl << |
| indent() << "args." << (*f_iter)->get_name(); |
| } |
| out << ");" << endl; |
| indent_down(); indent_down(); |
| scope_down(out); |
| out << endl; |
| |
| // Normal return. |
| if (!tfunction->is_oneway()) { |
| string ret_arg_decl, ret_arg_name; |
| if (!tfunction->get_returntype()->is_void()) { |
| ret_arg_decl = ", const " + type_name(tfunction->get_returntype()) + |
| "& _return"; |
| ret_arg_name = ", _return"; |
| } |
| if (gen_templates_) { |
| out << |
| indent() << "template <class Protocol_>" << endl; |
| } |
| out << |
| "void " << tservice->get_name() << "AsyncProcessor" << class_suffix << |
| "::return_" << tfunction->get_name() << |
| "(std::tr1::function<void(bool ok)> cob, int32_t seqid, " << |
| prot_type << "* oprot, void* ctx" << ret_arg_decl << ')' << endl; |
| scope_up(out); |
| |
| if (gen_templates_ && !specialized) { |
| // If oprot is a Protocol_ instance, |
| // use the specialized return function instead. |
| out << |
| indent() << "Protocol_* _oprot = dynamic_cast<Protocol_*>(oprot);" << |
| endl << |
| indent() << "if (_oprot) {" << endl << |
| indent() << " return return_" << tfunction->get_name() << |
| "(cob, seqid, _oprot, ctx" << ret_arg_name << ");" << endl << |
| indent() << "}" << endl << |
| indent() << "T_GENERIC_PROTOCOL(this, oprot, _oprot);" << |
| endl << endl; |
| } |
| |
| out << |
| indent() << tservice->get_name() << "_" << tfunction->get_name() << "_presult result;" << endl; |
| if (!tfunction->get_returntype()->is_void()) { |
| // The const_cast here is unfortunate, but it would be a pain to avoid, |
| // and we only do a write with this struct, which is const-safe. |
| out << |
| indent() << "result.success = const_cast<" << type_name(tfunction->get_returntype()) << "*>(&_return);" << endl << |
| indent() << "result.__isset.success = true;" << endl; |
| } |
| // Serialize the result into a struct |
| out << |
| endl << |
| indent() << "if (eventHandler_.get() != NULL) {" << endl << |
| indent() << " ctx = eventHandler_->getContext(\"" << service_func_name << "\", NULL);" << endl << |
| indent() << "}" << endl << |
| indent() << "::apache::thrift::TProcessorContextFreer freer(eventHandler_.get(), ctx, \"" << service_func_name << "\");" << endl << endl << |
| indent() << "if (eventHandler_.get() != NULL) {" << endl << |
| indent() << " eventHandler_->preWrite(ctx, \"" << service_func_name << "\");" << endl << |
| indent() << "}" << endl << endl << |
| indent() << "oprot->writeMessageBegin(\"" << tfunction->get_name() << "\", ::apache::thrift::protocol::T_REPLY, seqid);" << endl << |
| indent() << "result.write(oprot);" << endl << |
| indent() << "oprot->writeMessageEnd();" << endl << |
| indent() << "uint32_t bytes = oprot->getTransport()->writeEnd();" << endl << |
| indent() << "oprot->getTransport()->flush();" << endl << |
| indent() << "if (eventHandler_.get() != NULL) {" << endl << |
| indent() << " eventHandler_->postWrite(ctx, \"" << service_func_name << "\", bytes);" << endl << |
| indent() << "}" << endl << |
| indent() << "return cob(true);" << endl; |
| scope_down(out); |
| out << endl; |
| } |
| |
| // Exception return. |
| if (!tfunction->is_oneway() && !xceptions.empty()) { |
| if (gen_templates_) { |
| out << |
| indent() << "template <class Protocol_>" << endl; |
| } |
| out << |
| "void " << tservice->get_name() << "AsyncProcessor" << class_suffix << |
| "::throw_" << tfunction->get_name() << |
| "(std::tr1::function<void(bool ok)> cob, int32_t seqid, " << |
| prot_type << "* oprot, void* ctx, " << |
| "::apache::thrift::TDelayedException* _throw)" << endl; |
| scope_up(out); |
| |
| if (gen_templates_ && !specialized) { |
| // If oprot is a Protocol_ instance, |
| // use the specialized throw function instead. |
| out << |
| indent() << "Protocol_* _oprot = dynamic_cast<Protocol_*>(oprot);" << |
| endl << |
| indent() << "if (_oprot) {" << endl << |
| indent() << " return throw_" << tfunction->get_name() << |
| "(cob, seqid, _oprot, ctx, _throw);" << endl << |
| indent() << "}" << endl << |
| indent() << " T_GENERIC_PROTOCOL(this, oprot, _oprot);" << |
| endl << endl; |
| } |
| |
| out << |
| indent() << tservice->get_name() << "_" << tfunction->get_name() << "_result result;" << endl << endl << |
| indent() << "try {" << endl; |
| indent_up(); |
| out << |
| indent() << "_throw->throw_it();" << endl << |
| indent() << "return cob(false);" << endl; // Is this possible? TBD. |
| indent_down(); |
| out << |
| indent() << '}'; |
| for (x_iter = xceptions.begin(); x_iter != xceptions.end(); ++x_iter) { |
| out << " catch (" << type_name((*x_iter)->get_type()) << " &" << (*x_iter)->get_name() << ") {" << endl; |
| indent_up(); |
| out << |
| indent() << "result." << (*x_iter)->get_name() << " = " << (*x_iter)->get_name() << ";" << endl << |
| indent() << "result.__isset." << (*x_iter)->get_name() << " = true;" << endl; |
| scope_down(out); |
| } |
| // TODO(dreiss): Handle the case where an undeclared exception is thrown? |
| |
| // Serialize the result into a struct |
| out << |
| endl << |
| indent() << "if (eventHandler_.get() != NULL) {" << endl << |
| indent() << " ctx = eventHandler_->getContext(\"" << service_func_name << "\", NULL);" << endl << |
| indent() << "}" << endl << |
| indent() << "::apache::thrift::TProcessorContextFreer freer(eventHandler_.get(), ctx, \"" << service_func_name << "\");" << endl << endl << |
| indent() << "if (eventHandler_.get() != NULL) {" << endl << |
| indent() << " eventHandler_->preWrite(ctx, \"" << service_func_name << "\");" << endl << |
| indent() << "}" << endl << endl << |
| indent() << "oprot->writeMessageBegin(\"" << tfunction->get_name() << "\", ::apache::thrift::protocol::T_REPLY, seqid);" << endl << |
| indent() << "result.write(oprot);" << endl << |
| indent() << "oprot->writeMessageEnd();" << endl << |
| indent() << "uint32_t bytes = oprot->getTransport()->writeEnd();" << endl << |
| indent() << "oprot->getTransport()->flush();" << endl << |
| indent() << "if (eventHandler_.get() != NULL) {" << endl << |
| indent() << " eventHandler_->postWrite(ctx, \"" << service_func_name << "\", bytes);" << endl << |
| indent() << "}" << endl << |
| indent() << "return cob(true);" << endl; |
| scope_down(out); |
| out << endl; |
| } // for each function |
| } // cob style |
| } |
| |
| /** |
| * Generates a skeleton file of a server |
| * |
| * @param tservice The service to generate a server for. |
| */ |
| void t_cpp_generator::generate_service_skeleton(t_service* tservice) { |
| string svcname = tservice->get_name(); |
| |
| // Service implementation file includes |
| string f_skeleton_name = get_out_dir()+svcname+"_server.skeleton.cpp"; |
| |
| string ns = namespace_prefix(tservice->get_program()->get_namespace("cpp")); |
| |
| ofstream f_skeleton; |
| f_skeleton.open(f_skeleton_name.c_str()); |
| f_skeleton << |
| "// This autogenerated skeleton file illustrates how to build a server." << endl << |
| "// You should copy it to another filename to avoid overwriting it." << endl << |
| endl << |
| "#include \"" << get_include_prefix(*get_program()) << svcname << ".h\"" << endl << |
| "#include <protocol/TBinaryProtocol.h>" << endl << |
| "#include <server/TSimpleServer.h>" << endl << |
| "#include <transport/TServerSocket.h>" << endl << |
| "#include <transport/TBufferTransports.h>" << endl << |
| endl << |
| "using namespace ::apache::thrift;" << endl << |
| "using namespace ::apache::thrift::protocol;" << endl << |
| "using namespace ::apache::thrift::transport;" << endl << |
| "using namespace ::apache::thrift::server;" << endl << |
| endl << |
| "using boost::shared_ptr;" << endl << |
| endl; |
| |
| if (!ns.empty()) { |
| f_skeleton << |
| "using namespace " << string(ns, 0, ns.size()-2) << ";" << endl << |
| endl; |
| } |
| |
| f_skeleton << |
| "class " << svcname << "Handler : virtual public " << svcname << "If {" << endl << |
| " public:" << endl; |
| indent_up(); |
| f_skeleton << |
| indent() << svcname << "Handler() {" << endl << |
| indent() << " // Your initialization goes here" << endl << |
| indent() << "}" << endl << |
| endl; |
| |
| vector<t_function*> functions = tservice->get_functions(); |
| vector<t_function*>::iterator f_iter; |
| for (f_iter = functions.begin(); f_iter != functions.end(); ++f_iter) { |
| f_skeleton << |
| indent() << function_signature(*f_iter, "") << " {" << endl << |
| indent() << " // Your implementation goes here" << endl << |
| indent() << " printf(\"" << (*f_iter)->get_name() << "\\n\");" << endl << |
| indent() << "}" << endl << |
| endl; |
| } |
| |
| indent_down(); |
| f_skeleton << |
| "};" << endl << |
| endl; |
| |
| f_skeleton << |
| indent() << "int main(int argc, char **argv) {" << endl; |
| indent_up(); |
| f_skeleton << |
| indent() << "int port = 9090;" << endl << |
| indent() << "shared_ptr<" << svcname << "Handler> handler(new " << svcname << "Handler());" << endl << |
| indent() << "shared_ptr<TProcessor> processor(new " << svcname << "Processor(handler));" << endl << |
| indent() << "shared_ptr<TServerTransport> serverTransport(new TServerSocket(port));" << endl << |
| indent() << "shared_ptr<TTransportFactory> transportFactory(new TBufferedTransportFactory());" << endl << |
| indent() << "shared_ptr<TProtocolFactory> protocolFactory(new TBinaryProtocolFactory());" << endl << |
| endl << |
| indent() << "TSimpleServer server(processor, serverTransport, transportFactory, protocolFactory);" << endl << |
| indent() << "server.serve();" << endl << |
| indent() << "return 0;" << endl; |
| indent_down(); |
| f_skeleton << |
| "}" << endl << |
| endl; |
| |
| // Close the files |
| f_skeleton.close(); |
| } |
| |
| /** |
| * Deserializes a field of any type. |
| */ |
| void t_cpp_generator::generate_deserialize_field(ofstream& out, |
| t_field* tfield, |
| string prefix, |
| string suffix) { |
| t_type* type = get_true_type(tfield->get_type()); |
| |
| if (type->is_void()) { |
| throw "CANNOT GENERATE DESERIALIZE CODE FOR void TYPE: " + |
| prefix + tfield->get_name(); |
| } |
| |
| string name = prefix + tfield->get_name() + suffix; |
| |
| if (type->is_struct() || type->is_xception()) { |
| generate_deserialize_struct(out, (t_struct*)type, name); |
| } else if (type->is_container()) { |
| generate_deserialize_container(out, type, name); |
| } else if (type->is_base_type()) { |
| indent(out) << |
| "xfer += iprot->"; |
| t_base_type::t_base tbase = ((t_base_type*)type)->get_base(); |
| switch (tbase) { |
| case t_base_type::TYPE_VOID: |
| throw "compiler error: cannot serialize void field in a struct: " + name; |
| break; |
| case t_base_type::TYPE_STRING: |
| if (((t_base_type*)type)->is_binary()) { |
| out << "readBinary(" << name << ");"; |
| } |
| else { |
| out << "readString(" << name << ");"; |
| } |
| break; |
| case t_base_type::TYPE_BOOL: |
| out << "readBool(" << name << ");"; |
| break; |
| case t_base_type::TYPE_BYTE: |
| out << "readByte(" << name << ");"; |
| break; |
| case t_base_type::TYPE_I16: |
| out << "readI16(" << name << ");"; |
| break; |
| case t_base_type::TYPE_I32: |
| out << "readI32(" << name << ");"; |
| break; |
| case t_base_type::TYPE_I64: |
| out << "readI64(" << name << ");"; |
| break; |
| case t_base_type::TYPE_DOUBLE: |
| out << "readDouble(" << name << ");"; |
| break; |
| default: |
| throw "compiler error: no C++ reader for base type " + t_base_type::t_base_name(tbase) + name; |
| } |
| out << |
| endl; |
| } else if (type->is_enum()) { |
| string t = tmp("ecast"); |
| out << |
| indent() << "int32_t " << t << ";" << endl << |
| indent() << "xfer += iprot->readI32(" << t << ");" << endl << |
| indent() << name << " = (" << type_name(type) << ")" << t << ";" << endl; |
| } else { |
| printf("DO NOT KNOW HOW TO DESERIALIZE FIELD '%s' TYPE '%s'\n", |
| tfield->get_name().c_str(), type_name(type).c_str()); |
| } |
| } |
| |
| /** |
| * Generates an unserializer for a variable. This makes two key assumptions, |
| * first that there is a const char* variable named data that points to the |
| * buffer for deserialization, and that there is a variable protocol which |
| * is a reference to a TProtocol serialization object. |
| */ |
| void t_cpp_generator::generate_deserialize_struct(ofstream& out, |
| t_struct* tstruct, |
| string prefix) { |
| (void) tstruct; |
| indent(out) << |
| "xfer += " << prefix << ".read(iprot);" << endl; |
| } |
| |
| void t_cpp_generator::generate_deserialize_container(ofstream& out, |
| t_type* ttype, |
| string prefix) { |
| scope_up(out); |
| |
| string size = tmp("_size"); |
| string ktype = tmp("_ktype"); |
| string vtype = tmp("_vtype"); |
| string etype = tmp("_etype"); |
| |
| t_container* tcontainer = (t_container*)ttype; |
| bool use_push = tcontainer->has_cpp_name(); |
| |
| indent(out) << |
| prefix << ".clear();" << endl << |
| indent() << "uint32_t " << size << ";" << endl; |
| |
| // Declare variables, read header |
| if (ttype->is_map()) { |
| out << |
| indent() << "::apache::thrift::protocol::TType " << ktype << ";" << endl << |
| indent() << "::apache::thrift::protocol::TType " << vtype << ";" << endl << |
| indent() << "iprot->readMapBegin(" << |
| ktype << ", " << vtype << ", " << size << ");" << endl; |
| } else if (ttype->is_set()) { |
| out << |
| indent() << "::apache::thrift::protocol::TType " << etype << ";" << endl << |
| indent() << "iprot->readSetBegin(" << |
| etype << ", " << size << ");" << endl; |
| } else if (ttype->is_list()) { |
| out << |
| indent() << "::apache::thrift::protocol::TType " << etype << ";" << endl << |
| indent() << "iprot->readListBegin(" << |
| etype << ", " << size << ");" << endl; |
| if (!use_push) { |
| indent(out) << prefix << ".resize(" << size << ");" << endl; |
| } |
| } |
| |
| |
| // For loop iterates over elements |
| string i = tmp("_i"); |
| out << |
| indent() << "uint32_t " << i << ";" << endl << |
| indent() << "for (" << i << " = 0; " << i << " < " << size << "; ++" << i << ")" << endl; |
| |
| scope_up(out); |
| |
| if (ttype->is_map()) { |
| generate_deserialize_map_element(out, (t_map*)ttype, prefix); |
| } else if (ttype->is_set()) { |
| generate_deserialize_set_element(out, (t_set*)ttype, prefix); |
| } else if (ttype->is_list()) { |
| generate_deserialize_list_element(out, (t_list*)ttype, prefix, use_push, i); |
| } |
| |
| scope_down(out); |
| |
| // Read container end |
| if (ttype->is_map()) { |
| indent(out) << "iprot->readMapEnd();" << endl; |
| } else if (ttype->is_set()) { |
| indent(out) << "iprot->readSetEnd();" << endl; |
| } else if (ttype->is_list()) { |
| indent(out) << "iprot->readListEnd();" << endl; |
| } |
| |
| scope_down(out); |
| } |
| |
| |
| /** |
| * Generates code to deserialize a map |
| */ |
| void t_cpp_generator::generate_deserialize_map_element(ofstream& out, |
| t_map* tmap, |
| string prefix) { |
| string key = tmp("_key"); |
| string val = tmp("_val"); |
| t_field fkey(tmap->get_key_type(), key); |
| t_field fval(tmap->get_val_type(), val); |
| |
| out << |
| indent() << declare_field(&fkey) << endl; |
| |
| generate_deserialize_field(out, &fkey); |
| indent(out) << |
| declare_field(&fval, false, false, false, true) << " = " << |
| prefix << "[" << key << "];" << endl; |
| |
| generate_deserialize_field(out, &fval); |
| } |
| |
| void t_cpp_generator::generate_deserialize_set_element(ofstream& out, |
| t_set* tset, |
| string prefix) { |
| string elem = tmp("_elem"); |
| t_field felem(tset->get_elem_type(), elem); |
| |
| indent(out) << |
| declare_field(&felem) << endl; |
| |
| generate_deserialize_field(out, &felem); |
| |
| indent(out) << |
| prefix << ".insert(" << elem << ");" << endl; |
| } |
| |
| void t_cpp_generator::generate_deserialize_list_element(ofstream& out, |
| t_list* tlist, |
| string prefix, |
| bool use_push, |
| string index) { |
| if (use_push) { |
| string elem = tmp("_elem"); |
| t_field felem(tlist->get_elem_type(), elem); |
| indent(out) << declare_field(&felem) << endl; |
| generate_deserialize_field(out, &felem); |
| indent(out) << prefix << ".push_back(" << elem << ");" << endl; |
| } else { |
| t_field felem(tlist->get_elem_type(), prefix + "[" + index + "]"); |
| generate_deserialize_field(out, &felem); |
| } |
| } |
| |
| |
| /** |
| * Serializes a field of any type. |
| * |
| * @param tfield The field to serialize |
| * @param prefix Name to prepend to field name |
| */ |
| void t_cpp_generator::generate_serialize_field(ofstream& out, |
| t_field* tfield, |
| string prefix, |
| string suffix) { |
| t_type* type = get_true_type(tfield->get_type()); |
| |
| string name = prefix + tfield->get_name() + suffix; |
| |
| // Do nothing for void types |
| if (type->is_void()) { |
| throw "CANNOT GENERATE SERIALIZE CODE FOR void TYPE: " + name; |
| } |
| |
| |
| |
| if (type->is_struct() || type->is_xception()) { |
| generate_serialize_struct(out, |
| (t_struct*)type, |
| name); |
| } else if (type->is_container()) { |
| generate_serialize_container(out, type, name); |
| } else if (type->is_base_type() || type->is_enum()) { |
| |
| indent(out) << |
| "xfer += oprot->"; |
| |
| if (type->is_base_type()) { |
| t_base_type::t_base tbase = ((t_base_type*)type)->get_base(); |
| switch (tbase) { |
| case t_base_type::TYPE_VOID: |
| throw |
| "compiler error: cannot serialize void field in a struct: " + name; |
| break; |
| case t_base_type::TYPE_STRING: |
| if (((t_base_type*)type)->is_binary()) { |
| out << "writeBinary(" << name << ");"; |
| } |
| else { |
| out << "writeString(" << name << ");"; |
| } |
| break; |
| case t_base_type::TYPE_BOOL: |
| out << "writeBool(" << name << ");"; |
| break; |
| case t_base_type::TYPE_BYTE: |
| out << "writeByte(" << name << ");"; |
| break; |
| case t_base_type::TYPE_I16: |
| out << "writeI16(" << name << ");"; |
| break; |
| case t_base_type::TYPE_I32: |
| out << "writeI32(" << name << ");"; |
| break; |
| case t_base_type::TYPE_I64: |
| out << "writeI64(" << name << ");"; |
| break; |
| case t_base_type::TYPE_DOUBLE: |
| out << "writeDouble(" << name << ");"; |
| break; |
| default: |
| throw "compiler error: no C++ writer for base type " + t_base_type::t_base_name(tbase) + name; |
| } |
| } else if (type->is_enum()) { |
| out << "writeI32((int32_t)" << name << ");"; |
| } |
| out << endl; |
| } else { |
| printf("DO NOT KNOW HOW TO SERIALIZE FIELD '%s' TYPE '%s'\n", |
| name.c_str(), |
| type_name(type).c_str()); |
| } |
| } |
| |
| /** |
| * Serializes all the members of a struct. |
| * |
| * @param tstruct The struct to serialize |
| * @param prefix String prefix to attach to all fields |
| */ |
| void t_cpp_generator::generate_serialize_struct(ofstream& out, |
| t_struct* tstruct, |
| string prefix) { |
| (void) tstruct; |
| indent(out) << |
| "xfer += " << prefix << ".write(oprot);" << endl; |
| } |
| |
| void t_cpp_generator::generate_serialize_container(ofstream& out, |
| t_type* ttype, |
| string prefix) { |
| scope_up(out); |
| |
| if (ttype->is_map()) { |
| indent(out) << |
| "xfer += oprot->writeMapBegin(" << |
| type_to_enum(((t_map*)ttype)->get_key_type()) << ", " << |
| type_to_enum(((t_map*)ttype)->get_val_type()) << ", " << |
| "static_cast<uint32_t>(" << prefix << ".size()));" << endl; |
| } else if (ttype->is_set()) { |
| indent(out) << |
| "xfer += oprot->writeSetBegin(" << |
| type_to_enum(((t_set*)ttype)->get_elem_type()) << ", " << |
| "static_cast<uint32_t>(" << prefix << ".size()));" << endl; |
| } else if (ttype->is_list()) { |
| indent(out) << |
| "xfer += oprot->writeListBegin(" << |
| type_to_enum(((t_list*)ttype)->get_elem_type()) << ", " << |
| "static_cast<uint32_t>(" << prefix << ".size()));" << endl; |
| } |
| |
| string iter = tmp("_iter"); |
| out << |
| indent() << type_name(ttype) << "::const_iterator " << iter << ";" << endl << |
| indent() << "for (" << iter << " = " << prefix << ".begin(); " << iter << " != " << prefix << ".end(); ++" << iter << ")" << endl; |
| scope_up(out); |
| if (ttype->is_map()) { |
| generate_serialize_map_element(out, (t_map*)ttype, iter); |
| } else if (ttype->is_set()) { |
| generate_serialize_set_element(out, (t_set*)ttype, iter); |
| } else if (ttype->is_list()) { |
| generate_serialize_list_element(out, (t_list*)ttype, iter); |
| } |
| scope_down(out); |
| |
| if (ttype->is_map()) { |
| indent(out) << |
| "xfer += oprot->writeMapEnd();" << endl; |
| } else if (ttype->is_set()) { |
| indent(out) << |
| "xfer += oprot->writeSetEnd();" << endl; |
| } else if (ttype->is_list()) { |
| indent(out) << |
| "xfer += oprot->writeListEnd();" << endl; |
| } |
| |
| scope_down(out); |
| } |
| |
| /** |
| * Serializes the members of a map. |
| * |
| */ |
| void t_cpp_generator::generate_serialize_map_element(ofstream& out, |
| t_map* tmap, |
| string iter) { |
| t_field kfield(tmap->get_key_type(), iter + "->first"); |
| generate_serialize_field(out, &kfield, ""); |
| |
| t_field vfield(tmap->get_val_type(), iter + "->second"); |
| generate_serialize_field(out, &vfield, ""); |
| } |
| |
| /** |
| * Serializes the members of a set. |
| */ |
| void t_cpp_generator::generate_serialize_set_element(ofstream& out, |
| t_set* tset, |
| string iter) { |
| t_field efield(tset->get_elem_type(), "(*" + iter + ")"); |
| generate_serialize_field(out, &efield, ""); |
| } |
| |
| /** |
| * Serializes the members of a list. |
| */ |
| void t_cpp_generator::generate_serialize_list_element(ofstream& out, |
| t_list* tlist, |
| string iter) { |
| t_field efield(tlist->get_elem_type(), "(*" + iter + ")"); |
| generate_serialize_field(out, &efield, ""); |
| } |
| |
| /** |
| * Makes a :: prefix for a namespace |
| * |
| * @param ns The namespace, w/ periods in it |
| * @return Namespaces |
| */ |
| string t_cpp_generator::namespace_prefix(string ns) { |
| if (ns.size() == 0) { |
| return ""; |
| } |
| string result = ""; |
| string::size_type loc; |
| while ((loc = ns.find(".")) != string::npos) { |
| result += ns.substr(0, loc); |
| result += "::"; |
| ns = ns.substr(loc+1); |
| } |
| if (ns.size() > 0) { |
| result += ns + "::"; |
| } |
| return result; |
| } |
| |
| /** |
| * Opens namespace. |
| * |
| * @param ns The namespace, w/ periods in it |
| * @return Namespaces |
| */ |
| string t_cpp_generator::namespace_open(string ns) { |
| if (ns.size() == 0) { |
| return ""; |
| } |
| string result = ""; |
| string separator = ""; |
| string::size_type loc; |
| while ((loc = ns.find(".")) != string::npos) { |
| result += separator; |
| result += "namespace "; |
| result += ns.substr(0, loc); |
| result += " {"; |
| separator = " "; |
| ns = ns.substr(loc+1); |
| } |
| if (ns.size() > 0) { |
| result += separator + "namespace " + ns + " {"; |
| } |
| return result; |
| } |
| |
| /** |
| * Closes namespace. |
| * |
| * @param ns The namespace, w/ periods in it |
| * @return Namespaces |
| */ |
| string t_cpp_generator::namespace_close(string ns) { |
| if (ns.size() == 0) { |
| return ""; |
| } |
| string result = "}"; |
| string::size_type loc; |
| while ((loc = ns.find(".")) != string::npos) { |
| result += "}"; |
| ns = ns.substr(loc+1); |
| } |
| result += " // namespace"; |
| return result; |
| } |
| |
| /** |
| * Returns a C++ type name |
| * |
| * @param ttype The type |
| * @return String of the type name, i.e. std::set<type> |
| */ |
| string t_cpp_generator::type_name(t_type* ttype, bool in_typedef, bool arg) { |
| if (ttype->is_base_type()) { |
| string bname = base_type_name(((t_base_type*)ttype)->get_base()); |
| if (!arg) { |
| return bname; |
| } |
| |
| if (((t_base_type*)ttype)->get_base() == t_base_type::TYPE_STRING) { |
| return "const " + bname + "&"; |
| } else { |
| return "const " + bname; |
| } |
| } |
| |
| // Check for a custom overloaded C++ name |
| if (ttype->is_container()) { |
| string cname; |
| |
| t_container* tcontainer = (t_container*) ttype; |
| if (tcontainer->has_cpp_name()) { |
| cname = tcontainer->get_cpp_name(); |
| } else if (ttype->is_map()) { |
| t_map* tmap = (t_map*) ttype; |
| cname = "std::map<" + |
| type_name(tmap->get_key_type(), in_typedef) + ", " + |
| type_name(tmap->get_val_type(), in_typedef) + "> "; |
| } else if (ttype->is_set()) { |
| t_set* tset = (t_set*) ttype; |
| cname = "std::set<" + type_name(tset->get_elem_type(), in_typedef) + "> "; |
| } else if (ttype->is_list()) { |
| t_list* tlist = (t_list*) ttype; |
| cname = "std::vector<" + type_name(tlist->get_elem_type(), in_typedef) + "> "; |
| } |
| |
| if (arg) { |
| return "const " + cname + "&"; |
| } else { |
| return cname; |
| } |
| } |
| |
| string class_prefix; |
| if (in_typedef && (ttype->is_struct() || ttype->is_xception())) { |
| class_prefix = "class "; |
| } |
| |
| // Check if it needs to be namespaced |
| string pname; |
| t_program* program = ttype->get_program(); |
| if (program != NULL && program != program_) { |
| pname = |
| class_prefix + |
| namespace_prefix(program->get_namespace("cpp")) + |
| ttype->get_name(); |
| } else { |
| pname = class_prefix + ttype->get_name(); |
| } |
| |
| if (ttype->is_enum() && !gen_pure_enums_) { |
| pname += "::type"; |
| } |
| |
| if (arg) { |
| if (is_complex_type(ttype)) { |
| return "const " + pname + "&"; |
| } else { |
| return "const " + pname; |
| } |
| } else { |
| return pname; |
| } |
| } |
| |
| /** |
| * Returns the C++ type that corresponds to the thrift type. |
| * |
| * @param tbase The base type |
| * @return Explicit C++ type, i.e. "int32_t" |
| */ |
| string t_cpp_generator::base_type_name(t_base_type::t_base tbase) { |
| switch (tbase) { |
| case t_base_type::TYPE_VOID: |
| return "void"; |
| case t_base_type::TYPE_STRING: |
| return "std::string"; |
| case t_base_type::TYPE_BOOL: |
| return "bool"; |
| case t_base_type::TYPE_BYTE: |
| return "int8_t"; |
| case t_base_type::TYPE_I16: |
| return "int16_t"; |
| case t_base_type::TYPE_I32: |
| return "int32_t"; |
| case t_base_type::TYPE_I64: |
| return "int64_t"; |
| case t_base_type::TYPE_DOUBLE: |
| return "double"; |
| default: |
| throw "compiler error: no C++ base type name for base type " + t_base_type::t_base_name(tbase); |
| } |
| } |
| |
| /** |
| * Declares a field, which may include initialization as necessary. |
| * |
| * @param ttype The type |
| * @return Field declaration, i.e. int x = 0; |
| */ |
| string t_cpp_generator::declare_field(t_field* tfield, bool init, bool pointer, bool constant, bool reference) { |
| // TODO(mcslee): do we ever need to initialize the field? |
| string result = ""; |
| if (constant) { |
| result += "const "; |
| } |
| result += type_name(tfield->get_type()); |
| if (pointer) { |
| result += "*"; |
| } |
| if (reference) { |
| result += "&"; |
| } |
| result += " " + tfield->get_name(); |
| if (init) { |
| t_type* type = get_true_type(tfield->get_type()); |
| |
| if (type->is_base_type()) { |
| t_base_type::t_base tbase = ((t_base_type*)type)->get_base(); |
| switch (tbase) { |
| case t_base_type::TYPE_VOID: |
| break; |
| case t_base_type::TYPE_STRING: |
| result += " = \"\""; |
| break; |
| case t_base_type::TYPE_BOOL: |
| result += " = false"; |
| break; |
| case t_base_type::TYPE_BYTE: |
| case t_base_type::TYPE_I16: |
| case t_base_type::TYPE_I32: |
| case t_base_type::TYPE_I64: |
| result += " = 0"; |
| break; |
| case t_base_type::TYPE_DOUBLE: |
| result += " = (double)0"; |
| break; |
| default: |
| throw "compiler error: no C++ initializer for base type " + t_base_type::t_base_name(tbase); |
| } |
| } else if (type->is_enum()) { |
| result += " = (" + type_name(type) + ")0"; |
| } |
| } |
| if (!reference) { |
| result += ";"; |
| } |
| return result; |
| } |
| |
| /** |
| * Renders a function signature of the form 'type name(args)' |
| * |
| * @param tfunction Function definition |
| * @return String of rendered function definition |
| */ |
| string t_cpp_generator::function_signature(t_function* tfunction, |
| string style, |
| string prefix, |
| bool name_params) { |
| t_type* ttype = tfunction->get_returntype(); |
| t_struct* arglist = tfunction->get_arglist(); |
| bool has_xceptions = !tfunction->get_xceptions()->get_members().empty(); |
| |
| if (style == "") { |
| if (is_complex_type(ttype)) { |
| return |
| "void " + prefix + tfunction->get_name() + |
| "(" + type_name(ttype) + (name_params ? "& _return" : "& /* _return */") + |
| argument_list(arglist, name_params, true) + ")"; |
| } else { |
| return |
| type_name(ttype) + " " + prefix + tfunction->get_name() + |
| "(" + argument_list(arglist, name_params) + ")"; |
| } |
| } else if (style.substr(0,3) == "Cob") { |
| string cob_type; |
| string exn_cob; |
| if (style == "CobCl") { |
| cob_type = "(" + service_name_ + "CobClient"; |
| if (gen_templates_) { |
| cob_type += "T<Protocol_>"; |
| } |
| cob_type += "* client)"; |
| } else if (style =="CobSv") { |
| cob_type = (ttype->is_void() |
| ? "()" |
| : ("(" + type_name(ttype) + " const& _return)")); |
| if (has_xceptions) { |
| exn_cob = ", std::tr1::function<void(::apache::thrift::TDelayedException* _throw)> /* exn_cob */"; |
| } |
| } else { |
| throw "UNKNOWN STYLE"; |
| } |
| |
| return |
| "void " + prefix + tfunction->get_name() + |
| "(std::tr1::function<void" + cob_type + "> cob" + exn_cob + |
| argument_list(arglist, name_params, true) + ")"; |
| } else { |
| throw "UNKNOWN STYLE"; |
| } |
| } |
| |
| /** |
| * Renders a field list |
| * |
| * @param tstruct The struct definition |
| * @return Comma sepearated list of all field names in that struct |
| */ |
| string t_cpp_generator::argument_list(t_struct* tstruct, bool name_params, bool start_comma) { |
| string result = ""; |
| |
| const vector<t_field*>& fields = tstruct->get_members(); |
| vector<t_field*>::const_iterator f_iter; |
| bool first = !start_comma; |
| for (f_iter = fields.begin(); f_iter != fields.end(); ++f_iter) { |
| if (first) { |
| first = false; |
| } else { |
| result += ", "; |
| } |
| result += type_name((*f_iter)->get_type(), false, true) + " " + |
| (name_params ? (*f_iter)->get_name() : "/* " + (*f_iter)->get_name() + " */"); |
| } |
| return result; |
| } |
| |
| /** |
| * Converts the parse type to a C++ enum string for the given type. |
| * |
| * @param type Thrift Type |
| * @return String of C++ code to definition of that type constant |
| */ |
| string t_cpp_generator::type_to_enum(t_type* type) { |
| type = get_true_type(type); |
| |
| if (type->is_base_type()) { |
| t_base_type::t_base tbase = ((t_base_type*)type)->get_base(); |
| switch (tbase) { |
| case t_base_type::TYPE_VOID: |
| throw "NO T_VOID CONSTRUCT"; |
| case t_base_type::TYPE_STRING: |
| return "::apache::thrift::protocol::T_STRING"; |
| case t_base_type::TYPE_BOOL: |
| return "::apache::thrift::protocol::T_BOOL"; |
| case t_base_type::TYPE_BYTE: |
| return "::apache::thrift::protocol::T_BYTE"; |
| case t_base_type::TYPE_I16: |
| return "::apache::thrift::protocol::T_I16"; |
| case t_base_type::TYPE_I32: |
| return "::apache::thrift::protocol::T_I32"; |
| case t_base_type::TYPE_I64: |
| return "::apache::thrift::protocol::T_I64"; |
| case t_base_type::TYPE_DOUBLE: |
| return "::apache::thrift::protocol::T_DOUBLE"; |
| } |
| } else if (type->is_enum()) { |
| return "::apache::thrift::protocol::T_I32"; |
| } else if (type->is_struct()) { |
| return "::apache::thrift::protocol::T_STRUCT"; |
| } else if (type->is_xception()) { |
| return "::apache::thrift::protocol::T_STRUCT"; |
| } else if (type->is_map()) { |
| return "::apache::thrift::protocol::T_MAP"; |
| } else if (type->is_set()) { |
| return "::apache::thrift::protocol::T_SET"; |
| } else if (type->is_list()) { |
| return "::apache::thrift::protocol::T_LIST"; |
| } |
| |
| throw "INVALID TYPE IN type_to_enum: " + type->get_name(); |
| } |
| |
| /** |
| * Returns the symbol name of the local reflection of a type. |
| */ |
| string t_cpp_generator::local_reflection_name(const char* prefix, t_type* ttype, bool external) { |
| ttype = get_true_type(ttype); |
| |
| // We have to use the program name as part of the identifier because |
| // if two thrift "programs" are compiled into one actual program |
| // you would get a symbol collision if they both defined list<i32>. |
| // trlo = Thrift Reflection LOcal. |
| string prog; |
| string name; |
| string nspace; |
| |
| // TODO(dreiss): Would it be better to pregenerate the base types |
| // and put them in Thrift.{h,cpp} ? |
| |
| if (ttype->is_base_type()) { |
| prog = program_->get_name(); |
| name = ttype->get_ascii_fingerprint(); |
| } else if (ttype->is_enum()) { |
| assert(ttype->get_program() != NULL); |
| prog = ttype->get_program()->get_name(); |
| name = ttype->get_ascii_fingerprint(); |
| } else if (ttype->is_container()) { |
| prog = program_->get_name(); |
| name = ttype->get_ascii_fingerprint(); |
| } else { |
| assert(ttype->is_struct() || ttype->is_xception()); |
| assert(ttype->get_program() != NULL); |
| prog = ttype->get_program()->get_name(); |
| name = ttype->get_ascii_fingerprint(); |
| } |
| |
| if (external && |
| ttype->get_program() != NULL && |
| ttype->get_program() != program_) { |
| nspace = namespace_prefix(ttype->get_program()->get_namespace("cpp")); |
| } |
| |
| return nspace + "trlo_" + prefix + "_" + prog + "_" + name; |
| } |
| |
| string t_cpp_generator::get_include_prefix(const t_program& program) const { |
| string include_prefix = program.get_include_prefix(); |
| if (!use_include_prefix_ || |
| (include_prefix.size() > 0 && include_prefix[0] == '/')) { |
| // if flag is turned off or this is absolute path, return empty prefix |
| return ""; |
| } |
| |
| string::size_type last_slash = string::npos; |
| if ((last_slash = include_prefix.rfind("/")) != string::npos) { |
| return include_prefix.substr(0, last_slash) + "/" + out_dir_base_ + "/"; |
| } |
| |
| return ""; |
| } |
| |
| |
| THRIFT_REGISTER_GENERATOR(cpp, "C++", |
| " cob_style: Generate \"Continuation OBject\"-style classes.\n" |
| " no_client_completion:\n" |
| " Omit calls to completion__() in CobClient class.\n" |
| " templates: Generate templatized reader/writer methods.\n" |
| " pure_enums: Generate pure enums instead of wrapper classes.\n" |
| " dense: Generate type specifications for the dense protocol.\n" |
| " include_prefix: Use full include paths in generated files.\n" |
| ) |
| |