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Posted to commits@thrift.apache.org by ns...@apache.org on 2016/09/25 16:43:16 UTC
[27/55] [abbrv] [partial] thrift git commit: THRIFT-2835 Add
possibility to distribute generators separately from thrift core,
and load them dynamically
http://git-wip-us.apache.org/repos/asf/thrift/blob/052abc39/compiler/cpp/src/generate/t_swift_generator.cc
----------------------------------------------------------------------
diff --git a/compiler/cpp/src/generate/t_swift_generator.cc b/compiler/cpp/src/generate/t_swift_generator.cc
deleted file mode 100644
index 6e48bca..0000000
--- a/compiler/cpp/src/generate/t_swift_generator.cc
+++ /dev/null
@@ -1,2209 +0,0 @@
-/*
- * 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.
- */
-
-#include <string>
-#include <fstream>
-#include <iostream>
-#include <vector>
-#include <set>
-
-#include <stdlib.h>
-#include <sys/stat.h>
-#include <sstream>
-#include "t_oop_generator.h"
-#include "platform.h"
-
-using std::map;
-using std::ostream;
-using std::ofstream;
-using std::ostringstream;
-using std::set;
-using std::string;
-using std::stringstream;
-using std::vector;
-
-static const string endl = "\n"; // avoid ostream << std::endl flushes
-
-/**
- * Swift code generator.
- *
- * Designed from the Objective-C (aka Cocoa) generator.
- */
-class t_swift_generator : public t_oop_generator {
-public:
- t_swift_generator(t_program* program,
- const map<string, string>& parsed_options,
- const string& option_string)
- : t_oop_generator(program) {
- (void)option_string;
- map<string, string>::const_iterator iter;
-
- log_unexpected_ = false;
- async_clients_ = false;
- promise_kit_ = false;
- debug_descriptions_ = false;
-
- for( iter = parsed_options.begin(); iter != parsed_options.end(); ++iter) {
- if( iter->first.compare("log_unexpected") == 0) {
- log_unexpected_ = true;
- } else if( iter->first.compare("async_clients") == 0) {
- async_clients_ = true;
- } else if( iter->first.compare("promise_kit") == 0) {
- promise_kit_ = true;
- } else if( iter->first.compare("debug_descriptions") == 0) {
- debug_descriptions_ = true;
- } else {
- throw "unknown option swift:" + iter->first;
- }
- }
-
- out_dir_base_ = "gen-swift";
- }
-
- /**
- * Init and close methods
- */
-
- void init_generator();
- void close_generator();
-
- void generate_consts(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);
- void generate_xception(t_struct* txception);
- void generate_service(t_service* tservice);
-
- void print_const_value(ostream& out,
- string name,
- t_type* type,
- t_const_value* value,
- bool defval = false,
- bool is_property = false);
- void render_const_value(ostream& out,
- t_type* type,
- t_const_value* value);
-
- void generate_swift_struct(ofstream& out,
- t_struct* tstruct,
- bool is_private);
- void generate_swift_struct_init(ofstream& out,
- t_struct* tstruct,
- bool all,
- bool is_private);
-
- void generate_swift_struct_implementation(ofstream& out,
- t_struct* tstruct,
- bool is_result,
- bool is_private);
- void generate_swift_struct_hashable_extension(ofstream& out,
- t_struct* tstruct,
- bool is_private);
- void generate_swift_struct_equatable_extension(ofstream& out,
- t_struct* tstruct,
- bool is_private);
- void generate_swift_struct_thrift_extension(ofstream& out,
- t_struct* tstruct,
- bool is_result,
- bool is_private);
- void generate_swift_struct_reader(ofstream& out, t_struct* tstruct, bool is_private);
- void generate_swift_struct_writer(ofstream& out,t_struct* tstruct, bool is_private);
- void generate_swift_struct_result_writer(ofstream& out, t_struct* tstruct);
- void generate_swift_struct_printable_extension(ofstream& out, t_struct* tstruct);
-
- string function_result_helper_struct_type(t_service *tservice, t_function* tfunction);
- string function_args_helper_struct_type(t_service* tservice, t_function* tfunction);
- void generate_function_helpers(t_service *tservice, t_function* tfunction);
-
- /**
- * Service-level generation functions
- */
-
- void generate_swift_service_protocol(ofstream& out, t_service* tservice);
- void generate_swift_service_protocol_async(ofstream& out, t_service* tservice);
-
- void generate_swift_service_client(ofstream& out, t_service* tservice);
- void generate_swift_service_client_async(ofstream& out, t_service* tservice);
-
- void generate_swift_service_client_send_function_implementation(ofstream& out,
- t_service* tservice,
- t_function* tfunction,
- bool needs_protocol);
- void generate_swift_service_client_send_function_invocation(ofstream& out, t_function* tfunction);
- void generate_swift_service_client_send_async_function_invocation(ofstream& out,
- t_function* tfunction);
- void generate_swift_service_client_recv_function_implementation(ofstream& out,
- t_service* tservice,
- t_function* tfunction,
- bool needs_protocol);
- void generate_swift_service_client_implementation(ofstream& out, t_service* tservice);
- void generate_swift_service_client_async_implementation(ofstream& out, t_service* tservice);
-
- void generate_swift_service_server(ofstream& out, t_service* tservice);
- void generate_swift_service_server_implementation(ofstream& out, t_service* tservice);
- void generate_swift_service_helpers(t_service* tservice);
-
- /**
- * Helper rendering functions
- */
-
- string swift_imports();
- string swift_thrift_imports();
- string type_name(t_type* ttype, bool is_optional=false, bool is_forced=false);
- string base_type_name(t_base_type* tbase);
- string declare_property(t_field* tfield, bool is_private);
- string function_signature(t_function* tfunction);
- string async_function_signature(t_function* tfunction);
- string promise_function_signature(t_function* tfunction);
- string function_name(t_function* tfunction);
- string argument_list(t_struct* tstruct, string protocol_name, bool is_internal);
- string type_to_enum(t_type* ttype, bool qualified=false);
- string maybe_escape_identifier(const string& identifier);
- void populate_reserved_words();
-
-private:
-
- void block_open(ostream& out) {
- out << " {" << endl;
- indent_up();
- }
-
- void block_close(ostream& out, bool end_line=true) {
- indent_down();
- indent(out) << "}";
- if (end_line) out << endl;
- }
-
-
- bool field_is_optional(t_field* tfield) {
- return tfield->get_req() == t_field::T_OPTIONAL;
- }
-
- bool struct_has_required_fields(t_struct* tstruct) {
- const vector<t_field*>& members = tstruct->get_members();
- vector<t_field*>::const_iterator m_iter;
- for (m_iter = members.begin(); m_iter != members.end(); ++m_iter) {
- if (!field_is_optional(*m_iter)) {
- return true;
- }
- }
- return false;
- }
-
- bool struct_has_optional_fields(t_struct* tstruct) {
- const vector<t_field*>& members = tstruct->get_members();
- vector<t_field*>::const_iterator m_iter;
- for (m_iter = members.begin(); m_iter != members.end(); ++m_iter) {
- if (field_is_optional(*m_iter)) {
- return true;
- }
- }
- return false;
- }
-
- string constants_declarations_;
-
- /**
- * File streams
- */
-
- ofstream f_decl_;
- ofstream f_impl_;
-
- bool log_unexpected_;
- bool async_clients_;
- bool promise_kit_;
- bool debug_descriptions_;
-
- set<string> swift_reserved_words_;
-};
-
-/**
- * Prepares for file generation by opening up the necessary file output
- * streams.
- */
-void t_swift_generator::init_generator() {
- // Make output directory
- MKDIR(get_out_dir().c_str());
-
- populate_reserved_words();
-
- // we have a .swift declarations file...
- string f_decl_name = capitalize(program_name_) + ".swift";
- string f_decl_fullname = get_out_dir() + f_decl_name;
- f_decl_.open(f_decl_fullname.c_str());
-
- f_decl_ << autogen_comment() << endl;
-
- f_decl_ << swift_imports() << swift_thrift_imports() << endl;
-
- // ...and a .swift implementation extensions file
- string f_impl_name = capitalize(program_name_) + "+Exts.swift";
- string f_impl_fullname = get_out_dir() + f_impl_name;
- f_impl_.open(f_impl_fullname.c_str());
-
- f_impl_ << autogen_comment() << endl;
-
- f_impl_ << swift_imports() << swift_thrift_imports() << endl;
-
-}
-
-/**
- * Prints standard Cocoa imports
- *
- * @return List of imports for Cocoa libraries
- */
-string t_swift_generator::swift_imports() {
-
- vector<string> includes_list;
- includes_list.push_back("Foundation");
-
- ostringstream includes;
-
- vector<string>::const_iterator i_iter;
- for (i_iter=includes_list.begin(); i_iter!=includes_list.end(); ++i_iter) {
- includes << "import " << *i_iter << endl;
- }
-
- includes << endl;
-
- return includes.str();
-}
-
-/**
- * Prints Thrift runtime imports
- *
- * @return List of imports necessary for Thrift runtime
- */
-string t_swift_generator::swift_thrift_imports() {
-
- vector<string> includes_list;
- includes_list.push_back("Thrift");
-
- if (promise_kit_) {
- includes_list.push_back("PromiseKit");
- }
-
- ostringstream includes;
-
- vector<string>::const_iterator i_iter;
- for (i_iter=includes_list.begin(); i_iter!=includes_list.end(); ++i_iter) {
- includes << "import " << *i_iter << endl;
- }
-
- includes << endl;
-
- return includes.str();
-}
-
-/**
- * Finish up generation.
- */
-void t_swift_generator::close_generator() {
- // stick our constants declarations at the end of the header file
- // since they refer to things we are defining.
- f_decl_ << constants_declarations_ << endl;
-}
-
-/**
- * Generates a typedef. This is just a simple 1-liner in Swift
- *
- * @param ttypedef The type definition
- */
-void t_swift_generator::generate_typedef(t_typedef* ttypedef) {
- f_decl_ << indent() << "public typealias " << ttypedef->get_symbolic()
- << " = " << type_name(ttypedef->get_type()) << endl;
- f_decl_ << endl;
-}
-
-/**
- * Generates code for an enumerated type. In Swift, this is
- * essentially the same as the thrift definition itself, using
- * Swift syntax.
- *
- * @param tenum The enumeration
- */
-void t_swift_generator::generate_enum(t_enum* tenum) {
- f_decl_ << indent() << "public enum " << tenum->get_name() << " : Int32";
- block_open(f_decl_);
-
- vector<t_enum_value*> constants = tenum->get_constants();
- vector<t_enum_value*>::iterator c_iter;
-
- for (c_iter = constants.begin(); c_iter != constants.end(); ++c_iter) {
- f_decl_ << indent() << "case " << (*c_iter)->get_name()
- << " = " << (*c_iter)->get_value() << endl;
- }
-
- f_decl_ << endl;
- f_decl_ << indent() << "public init() { self.init(rawValue: " << constants.front()->get_value() << ")! }" << endl;
-
- block_close(f_decl_);
- f_decl_ << endl;
-
- f_impl_ << indent() << "extension " << tenum->get_name() << " : TEnum";
- block_open(f_impl_);
-
- f_impl_ << endl;
-
- f_impl_ << indent() << "public static func readValueFromProtocol(proto: TProtocol) throws -> " << tenum->get_name();
- block_open(f_impl_);
- f_impl_ << indent() << "var raw = Int32()" << endl
- << indent() << "try proto.readI32(&raw)" << endl
- << indent() << "return " << tenum->get_name() << "(rawValue: raw)!" << endl;
- block_close(f_impl_);
- f_impl_ << endl;
-
- f_impl_ << indent() << "public static func writeValue(value: " << tenum->get_name() << ", toProtocol proto: TProtocol) throws";
- block_open(f_impl_);
- f_impl_ << indent() << "try proto.writeI32(value.rawValue)" << endl;
- block_close(f_impl_);
- f_impl_ << endl;
-
- block_close(f_impl_);
- f_impl_ << endl;
-}
-
-/**
- * Generates public constants for all Thrift constants.
- *
- * @param consts Constants to generate
- */
-void t_swift_generator::generate_consts(vector<t_const*> consts) {
-
- ostringstream const_interface;
-
- // Public constants for base types & strings
- vector<t_const*>::iterator c_iter;
- for (c_iter = consts.begin(); c_iter != consts.end(); ++c_iter) {
- t_type* type = (*c_iter)->get_type();
- const_interface << "public let " << capitalize((*c_iter)->get_name()) << " : " << type_name(type) << " = ";
- render_const_value(const_interface, type, (*c_iter)->get_value());
- const_interface << endl << endl;
- }
-
- // this gets spit into the header file in ::close_generator
- constants_declarations_ = const_interface.str();
-
-}
-
-/**
- * Generates a struct definition for a thrift data type. This is a struct
- * with public members. Optional types are used for optional properties to
- * allow them to be tested for availability. Separate inits are included for
- * required properties & all properties.
- *
- * Generates extensions to provide conformance to TStruct, TSerializable,
- * Hashable & Equatable
- *
- * @param tstruct The struct definition
- */
-void t_swift_generator::generate_struct(t_struct* tstruct) {
- generate_swift_struct(f_decl_, tstruct, false);
- generate_swift_struct_implementation(f_impl_, tstruct, false, false);
-}
-
-/**
- * Exceptions are structs, but they conform to ErrorType
- *
- * @param tstruct The struct definition
- */
-void t_swift_generator::generate_xception(t_struct* txception) {
- generate_swift_struct(f_decl_, txception, false);
- generate_swift_struct_implementation(f_impl_, txception, false, false);
-}
-
-/**
- * Generate the interface for a struct. Only properties and
- * init methods are included.
- *
- * @param tstruct The struct definition
- * @param is_private
- * Is the struct public or private
- */
-void t_swift_generator::generate_swift_struct(ofstream& out,
- t_struct* tstruct,
- bool is_private) {
-
- string visibility = is_private ? "private" : "public";
-
- out << indent() << visibility << " final class " << tstruct->get_name();
-
- if (tstruct->is_xception()) {
- out << " : ErrorType";
- }
-
- block_open(out);
-
- // properties
- const vector<t_field*>& members = tstruct->get_members();
- vector<t_field*>::const_iterator m_iter;
-
- for (m_iter = members.begin(); m_iter != members.end(); ++m_iter) {
- out << endl;
- out << indent() << declare_property(*m_iter, is_private) << endl;
- }
-
- out << endl;
-
- // init
-
- indent(out) << visibility << " init()";
- block_open(out);
- block_close(out);
-
- out << endl;
-
- if (struct_has_required_fields(tstruct)) {
- generate_swift_struct_init(out, tstruct, false, is_private);
- }
- if (struct_has_optional_fields(tstruct)) {
- generate_swift_struct_init(out, tstruct, true, is_private);
- }
-
- block_close(out);
-
- out << endl;
-}
-
-/**
- * Generate struct init for properties
- *
- * @param tstruct The structure definition
- * @param all Generate init with all or just required properties
- * @param is_private
- * Is the initializer public or private
- */
-void t_swift_generator::generate_swift_struct_init(ofstream& out,
- t_struct* tstruct,
- bool all,
- bool is_private) {
-
- string visibility = is_private ? "private" : "public";
-
- indent(out) << visibility << " init(";
-
- const vector<t_field*>& members = tstruct->get_members();
- vector<t_field*>::const_iterator m_iter;
-
- bool first=true;
- for (m_iter = members.begin(); m_iter != members.end();) {
- if (all || !field_is_optional(*m_iter)) {
- if (first) {
- first = false;
- }
- else {
- out << ", ";
- }
- out << (*m_iter)->get_name() << ": "
- << maybe_escape_identifier(type_name((*m_iter)->get_type(), field_is_optional(*m_iter)));
- }
- ++m_iter;
- }
- out << ")";
-
- block_open(out);
-
- for (m_iter = members.begin(); m_iter != members.end(); ++m_iter) {
- if (all || (*m_iter)->get_req() == t_field::T_REQUIRED || (*m_iter)->get_req() == t_field::T_OPT_IN_REQ_OUT) {
- out << indent() << "self." << maybe_escape_identifier((*m_iter)->get_name()) << " = "
- << maybe_escape_identifier((*m_iter)->get_name()) << endl;
- }
- }
-
- block_close(out);
-
- out << endl;
-}
-
-/**
- * Generate the hashable protocol implmentation
- *
- * @param tstruct The structure definition
- * @param is_private
- * Is the struct public or private
- */
-void t_swift_generator::generate_swift_struct_hashable_extension(ofstream& out,
- t_struct* tstruct,
- bool is_private) {
-
- string visibility = is_private ? "private" : "public";
-
- indent(out) << "extension " << tstruct->get_name() << " : Hashable";
-
- block_open(out);
-
- out << endl;
-
- indent(out) << visibility << " var hashValue : Int";
-
- block_open(out);
-
-
- const vector<t_field*>& members = tstruct->get_members();
- vector<t_field*>::const_iterator m_iter;
-
- if (!members.empty()) {
- indent(out) << "let prime = 31" << endl;
- indent(out) << "var result = 1" << endl;
-
- for (m_iter = members.begin(); m_iter != members.end(); ++m_iter) {
- t_field* tfield = *m_iter;
- string accessor = field_is_optional(tfield) ? "?." : ".";
- string defaultor = field_is_optional(tfield) ? " ?? 0" : "";
- indent(out) << "result = prime &* result &+ (" << maybe_escape_identifier(tfield->get_name()) << accessor
- << "hashValue" << defaultor << ")" << endl;
- }
-
- indent(out) << "return result" << endl;
- }
- else {
- indent(out) << "return 31" << endl;
- }
-
- block_close(out);
-
- out << endl;
-
- block_close(out);
-
- out << endl;
-}
-
-/**
- * Generate the equatable protocol implementation
- *
- * @param tstruct The structure definition
- * @param is_private
- * Is the struct public or private
- */
-void t_swift_generator::generate_swift_struct_equatable_extension(ofstream& out,
- t_struct* tstruct,
- bool is_private) {
-
- string visibility = is_private ? "private" : "public";
-
- indent(out) << visibility << " func ==(lhs: " << type_name(tstruct) << ", rhs: " << type_name(tstruct) << ") -> Bool";
-
- block_open(out);
-
- indent(out) << "return";
-
- const vector<t_field*>& members = tstruct->get_members();
- vector<t_field*>::const_iterator m_iter;
-
- if (members.size()) {
-
- out << endl;
-
- indent_up();
-
- for (m_iter = members.begin(); m_iter != members.end();) {
- t_field* tfield = *m_iter;
- indent(out) << "(lhs." << maybe_escape_identifier(tfield->get_name())
- << " ?== rhs." << maybe_escape_identifier(tfield->get_name()) << ")";
- if (++m_iter != members.end()) {
- out << " &&";
- }
- out << endl;
- }
-
- indent_down();
-
- }
- else {
- out << " true" << endl;
- }
-
- block_close(out);
-
- out << endl;
-}
-
-/**
- * Generate struct implementation. Produces extensions that
- * fulfill the requisite protocols to complete the value.
- *
- * @param tstruct The struct definition
- * @param is_result
- * If this is a result it needs a different writer
- * @param is_private
- * Is the struct public or private
- */
-void t_swift_generator::generate_swift_struct_implementation(ofstream& out,
- t_struct* tstruct,
- bool is_result,
- bool is_private) {
-
- generate_swift_struct_equatable_extension(out, tstruct, is_private);
-
- if (!is_private && !is_result) {
- generate_swift_struct_printable_extension(out, tstruct);
- }
-
- generate_swift_struct_hashable_extension(out, tstruct, is_private);
- generate_swift_struct_thrift_extension(out, tstruct, is_result, is_private);
-
- out << endl << endl;
-}
-
-/**
- * Generate the TStruct protocol implementation.
- *
- * @param tstruct The structure definition
- * @param is_result
- * Is the struct a result value
- * @param is_private
- * Is the struct public or private
- */
-void t_swift_generator::generate_swift_struct_thrift_extension(ofstream& out,
- t_struct* tstruct,
- bool is_result,
- bool is_private) {
-
- indent(out) << "extension " << tstruct->get_name() << " : TStruct";
-
- block_open(out);
-
- out << endl;
-
- generate_swift_struct_reader(out, tstruct, is_private);
-
- if (is_result) {
- generate_swift_struct_result_writer(out, tstruct);
- }
- else {
- generate_swift_struct_writer(out, tstruct, is_private);
- }
-
- block_close(out);
-
- out << endl;
-}
-
-/**
- * Generates a function to read a struct from
- * from a protocol. (TStruct compliance)
- *
- * @param tstruct The structure definition
- * @param is_private
- * Is the struct public or private
- */
-void t_swift_generator::generate_swift_struct_reader(ofstream& out,
- t_struct* tstruct,
- bool is_private) {
-
- string visibility = is_private ? "private" : "public";
-
- indent(out) << visibility << " static func readValueFromProtocol(__proto: TProtocol) throws -> "
- << tstruct->get_name();
-
- block_open(out);
-
- out << endl;
-
- indent(out) << "try __proto.readStructBegin()" << endl << endl;
-
- const vector<t_field*>& fields = tstruct->get_members();
- vector<t_field*>::const_iterator f_iter;
-
- for (f_iter = fields.begin(); f_iter != fields.end(); ++f_iter) {
- bool optional = field_is_optional(*f_iter);
- indent(out) << "var " << maybe_escape_identifier((*f_iter)->get_name()) << " : "
- << type_name((*f_iter)->get_type(), optional, !optional) << endl;
- }
-
- out << endl;
-
- // Loop over reading in fields
- indent(out) << "fields: while true";
-
- block_open(out);
-
- out << endl;
-
- indent(out) << "let (_, fieldType, fieldID) = try __proto.readFieldBegin()" << endl << endl;
- indent(out) << "switch (fieldID, fieldType)";
-
- block_open(out);
-
- indent(out) << "case (_, .STOP):" << endl;
- indent_up();
- indent(out) << "break fields" << endl << endl;
- indent_down();
-
- // Generate deserialization code for known cases
- for (f_iter = fields.begin(); f_iter != fields.end(); ++f_iter) {
-
- indent(out) << "case (" << (*f_iter)->get_key() << ", " << type_to_enum((*f_iter)->get_type()) << "):" << endl;
- indent_up();
- indent(out) << maybe_escape_identifier((*f_iter)->get_name()) << " = try __proto.readValue() as "
- << type_name((*f_iter)->get_type()) << endl << endl;
- indent_down();
-
- }
-
- indent(out) << "case let (_, unknownType):" << endl;
- indent_up();
- indent(out) << "try __proto.skipType(unknownType)" << endl;
- indent_down();
-
- block_close(out);
-
- out << endl;
-
- // Read field end marker
- indent(out) << "try __proto.readFieldEnd()" << endl;
-
- block_close(out);
-
- out << endl;
-
- indent(out) << "try __proto.readStructEnd()" << endl;
-
- out << endl;
-
- if (struct_has_required_fields(tstruct)) {
- // performs various checks (e.g. check that all required fields are set)
- indent(out) << "// Required fields" << endl;
-
- for (f_iter = fields.begin(); f_iter != fields.end(); ++f_iter) {
- if (field_is_optional(*f_iter)) {
- continue;
- }
- indent(out) << "try __proto.validateValue(" << (*f_iter)->get_name() << ", "
- << "named: \"" << (*f_iter)->get_name() << "\")" << endl;
- }
- }
-
- out << endl;
-
- indent(out) << "return " << tstruct->get_name() << "(";
- for (f_iter = fields.begin(); f_iter != fields.end();) {
- out << (*f_iter)->get_name() << ": " << maybe_escape_identifier((*f_iter)->get_name());
- if (++f_iter != fields.end()) {
- out << ", ";
- }
- }
- out << ")" << endl;
-
- block_close(out);
-
- out << endl;
-}
-
-/**
- * Generates a function to write a struct to
- * a protocol. (TStruct compliance)
- *
- * @param tstruct The structure definition
- * @param is_private
- * Is the struct public or private
- */
-void t_swift_generator::generate_swift_struct_writer(ofstream& out,
- t_struct* tstruct,
- bool is_private) {
-
- string visibility = is_private ? "private" : "public";
-
- indent(out) << visibility << " static func writeValue(__value: " << tstruct->get_name() << ", toProtocol __proto: TProtocol) throws";
-
- block_open(out);
-
- out << endl;
-
- string name = tstruct->get_name();
- const vector<t_field*>& fields = tstruct->get_members();
- vector<t_field*>::const_iterator f_iter;
-
- indent(out) << "try __proto.writeStructBeginWithName(\"" << name << "\")" << endl;
-
- out << endl;
-
- for (f_iter = fields.begin(); f_iter != fields.end(); ++f_iter) {
- t_field *tfield = *f_iter;
-
- bool optional = field_is_optional(tfield);
- if (optional) {
- indent(out) << "if let " << maybe_escape_identifier(tfield->get_name())
- << " = __value." << maybe_escape_identifier(tfield->get_name());
- block_open(out);
- }
-
- indent(out) << "try __proto.writeFieldValue("
- << (optional ? "" : "__value.") << maybe_escape_identifier(tfield->get_name()) << ", "
- << "name: \"" << tfield->get_name() << "\", "
- << "type: " << type_to_enum(tfield->get_type()) << ", "
- << "id: " << tfield->get_key() << ")" << endl;
-
- if (optional) {
- block_close(out);
- }
-
- out << endl;
- }
-
- indent(out) << "try __proto.writeFieldStop()" << endl << endl;
-
- indent(out) << "try __proto.writeStructEnd()" << endl;
-
- block_close(out);
-
- out << endl;
-}
-
-/**
- * Generates a function to read a struct from
- * from a protocol. (TStruct compliance)
- *
- * This is specifically a function result. Only
- * the first available field is written.
- *
- * @param tstruct The structure definition
- */
-void t_swift_generator::generate_swift_struct_result_writer(ofstream& out, t_struct* tstruct) {
-
- indent(out) << "private static func writeValue(__value: " << tstruct->get_name() << ", toProtocol __proto: TProtocol) throws";
-
- block_open(out);
-
- out << endl;
-
- string name = tstruct->get_name();
- const vector<t_field*>& fields = tstruct->get_members();
- vector<t_field*>::const_iterator f_iter;
-
- indent(out) << "try __proto.writeStructBeginWithName(\"" << name << "\")" << endl;
-
- out << endl;
-
- for (f_iter = fields.begin(); f_iter != fields.end(); ++f_iter) {
- t_field *tfield = *f_iter;
-
- indent(out) << "if let result = __value." << (*f_iter)->get_name();
-
- block_open(out);
-
- indent(out) << "try __proto.writeFieldValue(result, "
- << "name: \"" << tfield->get_name() << "\", "
- << "type: " << type_to_enum(tfield->get_type()) << ", "
- << "id: " << tfield->get_key() << ")" << endl;
-
- block_close(out);
- }
- // Write the struct map
- indent(out) << "try __proto.writeFieldStop()" << endl << endl;
-
- indent(out) << "try __proto.writeStructEnd()" << endl;
-
- block_close(out);
-
- out << endl;
-}
-
-/**
- * Generates a description method for the given struct
- *
- * @param tstruct The struct definition
- */
-void t_swift_generator::generate_swift_struct_printable_extension(ofstream& out, t_struct* tstruct) {
-
- // Allow use of debugDescription so the app can add description via a cateogory/extension
-
- indent(out) << "extension " << tstruct->get_name() << " : "
- << (debug_descriptions_ ? "CustomDebugStringConvertible" : "CustomStringConvertible");
-
- block_open(out);
-
- out << endl;
-
- indent(out) << "public var description : String";
-
- block_open(out);
-
- indent(out) << "var desc = \"" << tstruct->get_name() << "(\"" << endl;
-
- const vector<t_field*>& fields = tstruct->get_members();
- vector<t_field*>::const_iterator f_iter;
-
- for (f_iter = fields.begin(); f_iter != fields.end();) {
- indent(out) << "desc += \"" << (*f_iter)->get_name()
- << "=\\(self." << maybe_escape_identifier((*f_iter)->get_name()) << ")";
- if (++f_iter != fields.end()) {
- out << ", ";
- }
- out << "\"" << endl;
- }
- indent(out) << "desc += \")\"" << endl;
- indent(out) << "return desc" << endl;
-
- block_close(out);
-
- out << endl;
-
- block_close(out);
-
- out << endl;
-}
-
-/**
- * Generates a thrift service. In Swift this consists of a
- * protocol definition and a client (with it's implementation
- * separated into exts file).
- *
- * @param tservice The service definition
- */
-void t_swift_generator::generate_service(t_service* tservice) {
-
- generate_swift_service_protocol(f_decl_, tservice);
- generate_swift_service_client(f_decl_, tservice);
- if (async_clients_) {
- generate_swift_service_protocol_async(f_decl_, tservice);
- generate_swift_service_client_async(f_decl_, tservice);
- }
- generate_swift_service_server(f_decl_, tservice);
-
- generate_swift_service_helpers(tservice);
-
- generate_swift_service_client_implementation(f_impl_, tservice);
- if (async_clients_) {
- generate_swift_service_client_async_implementation(f_impl_, tservice);
- }
- generate_swift_service_server_implementation(f_impl_, tservice);
-}
-
-/**
- * Generates structs for all the service return types
- *
- * @param tservice The service
- */
-void t_swift_generator::generate_swift_service_helpers(t_service* tservice) {
- vector<t_function*> functions = tservice->get_functions();
- vector<t_function*>::iterator f_iter;
- for (f_iter = functions.begin(); f_iter != functions.end(); ++f_iter) {
-
- t_struct* ts = (*f_iter)->get_arglist();
-
- string qname = function_args_helper_struct_type(tservice, *f_iter);
-
- t_struct qname_ts = t_struct(ts->get_program(), qname);
-
- const vector<t_field*>& members = ts->get_members();
- vector<t_field*>::const_iterator m_iter;
- for (m_iter = members.begin(); m_iter != members.end(); ++m_iter) {
- qname_ts.append(*m_iter);
- }
-
- generate_swift_struct(f_impl_, &qname_ts, true);
- generate_swift_struct_implementation(f_impl_, &qname_ts, false, true);
- generate_function_helpers(tservice, *f_iter);
- }
-}
-
-string t_swift_generator::function_result_helper_struct_type(t_service *tservice, t_function* tfunction) {
- if (tfunction->is_oneway()) {
- return tservice->get_name() + "_" + tfunction->get_name();
- } else {
- return tservice->get_name() + "_" + tfunction->get_name() + "_result";
- }
-}
-
-string t_swift_generator::function_args_helper_struct_type(t_service *tservice, t_function* tfunction) {
- return tservice->get_name() + "_" + tfunction->get_name() + "_args";
-}
-
-/**
- * Generates a struct and helpers for a function.
- *
- * @param tfunction The function
- */
-void t_swift_generator::generate_function_helpers(t_service *tservice, t_function* tfunction) {
- if (tfunction->is_oneway()) {
- return;
- }
-
- // create a result struct with a success field of the return type,
- // and a field for each type of exception thrown
- t_struct result(program_, function_result_helper_struct_type(tservice, tfunction));
- if (!tfunction->get_returntype()->is_void()) {
- t_field* success = new t_field(tfunction->get_returntype(), "success", 0);
- success->set_req(t_field::T_OPTIONAL);
- 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) {
- t_field *x = *f_iter;
- t_field *ox = new t_field(x->get_type(), x->get_name(), x->get_key());
- ox->set_req(t_field::T_OPTIONAL);
- result.append(ox);
- }
-
- // generate the result struct
- generate_swift_struct(f_impl_, &result, true);
- generate_swift_struct_implementation(f_impl_, &result, true, true);
-
- for (f_iter = result.get_members().begin(); f_iter != result.get_members().end(); ++f_iter) {
- delete *f_iter;
- }
-}
-
-/**
- * Generates a service protocol definition.
- *
- * @param tservice The service to generate a protocol definition for
- */
-void t_swift_generator::generate_swift_service_protocol(ofstream& out, t_service* tservice) {
-
- indent(out) << "public protocol " << tservice->get_name();
-
- block_open(out);
-
- vector<t_function*> functions = tservice->get_functions();
- vector<t_function*>::iterator f_iter;
-
- for (f_iter = functions.begin(); f_iter != functions.end(); ++f_iter) {
- out << endl;
- indent(out) << function_signature(*f_iter) << " // exceptions: ";
- t_struct* xs = (*f_iter)->get_xceptions();
- const 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 << type_name((*x_iter)->get_type()) + ", ";
- }
- out << endl;
- }
-
- block_close(out);
-
- out << endl;
-}
-
-/**
- * Generates an asynchronous service protocol definition.
- *
- * @param tservice The service to generate a protocol definition for
- */
-void t_swift_generator::generate_swift_service_protocol_async(ofstream& out, t_service* tservice) {
-
- indent(out) << "public protocol " << tservice->get_name() << "Async";
-
- block_open(out);
-
- vector<t_function*> functions = tservice->get_functions();
- vector<t_function*>::iterator f_iter;
-
- for (f_iter = functions.begin(); f_iter != functions.end(); ++f_iter) {
- out << endl;
- indent(out) << async_function_signature(*f_iter) << endl;
- if (promise_kit_) {
- indent(out) << promise_function_signature(*f_iter) << endl;
- }
- out << endl;
- }
-
- block_close(out);
-
- out << endl;
-}
-
-/**
- * Generates a service client interface definition.
- *
- * @param tservice The service to generate a client interface definition for
- */
-void t_swift_generator::generate_swift_service_client(ofstream& out,
- t_service* tservice) {
-
- indent(out) << "public class " << tservice->get_name() << "Client /* : " << tservice->get_name() << " */";
-
- block_open(out);
-
- out << endl;
-
- indent(out) << "let __inProtocol : TProtocol" << endl << endl;
-
- indent(out) << "let __outProtocol : TProtocol" << endl << endl;
-
- indent(out) << "public init(inoutProtocol: TProtocol)";
-
- block_open(out);
-
- indent(out) << "__inProtocol = inoutProtocol" << endl;
-
- indent(out) << "__outProtocol = inoutProtocol" << endl;
-
- block_close(out);
-
- out << endl;
-
- indent(out) << "public init(inProtocol: TProtocol, outProtocol: TProtocol)";
-
- block_open(out);
-
- indent(out) << "__inProtocol = inProtocol" << endl;
-
- indent(out) << "__outProtocol = outProtocol" << endl;
-
- block_close(out);
-
- out << endl;
-
- block_close(out);
-
- out << endl;
-}
-
-/**
- * Generates a service client interface definition.
- *
- * @param tservice The service to generate a client interface definition for
- */
-void t_swift_generator::generate_swift_service_client_async(ofstream& out,
- t_service* tservice) {
-
- indent(out) << "public class " << tservice->get_name() << "AsyncClient /* : " << tservice->get_name() << " */";
-
- block_open(out);
-
- out << endl;
-
- indent(out) << "let __protocolFactory : TProtocolFactory" << endl << endl;
-
- indent(out) << "let __transportFactory : TAsyncTransportFactory" << endl << endl;
-
- indent(out) << "public init(protocolFactory: TProtocolFactory, transportFactory: TAsyncTransportFactory)";
-
- block_open(out);
-
- indent(out) << "__protocolFactory = protocolFactory" << endl;
-
- indent(out) << "__transportFactory = transportFactory" << endl;
-
- block_close(out);
-
- out << endl;
-
- block_close(out);
-
- out << endl;
-}
-
-/**
- * Generates a service server interface definition. In other words,
- * the TProcess implementation for the service definition.
- *
- * @param tservice The service to generate a client interface definition for
- */
-void t_swift_generator::generate_swift_service_server(ofstream& out,
- t_service* tservice) {
-
- indent(out) << "public class " << tservice->get_name() << "Processor : NSObject /* " << tservice->get_name() << " */";
-
- block_open(out);
-
- out << endl;
-
- out << indent() << "typealias ProcessorHandlerDictionary = "
- << "[String: (Int, TProtocol, TProtocol, " << tservice->get_name() << ") throws -> Void]" << endl
- << endl
- << indent() << "let service : " << tservice->get_name() << endl
- << endl
- << indent() << "public init(service: " << tservice->get_name() << ")";
- block_open(out);
- indent(out) << "self.service = service" << endl;
- block_close(out);
-
- out << endl;
-
- block_close(out);
-
- out << endl;
-}
-
-/**
- * Generates a function that will send the arguments
- * for a service function via a protocol.
- *
- * @param tservice The service to generate
- * @param tfunction The function to generate
- * @param needs_protocol
- * Wether the first parameter must be a protocol or if
- * the protocol is to be assumed
- */
-void t_swift_generator::generate_swift_service_client_send_function_implementation(ofstream& out,
- t_service *tservice,
- t_function* tfunction,
- bool needs_protocol) {
-
- string funname = tfunction->get_name();
-
- t_function send_function(g_type_bool,
- "send_" + tfunction->get_name(),
- tfunction->get_arglist());
-
- string argsname = function_args_helper_struct_type(tservice, tfunction);
- t_struct* arg_struct = tfunction->get_arglist();
-
- // Open function
- indent(out) << "private func " << send_function.get_name() << "(" << argument_list(tfunction->get_arglist(), needs_protocol ? "__outProtocol" : "", true) << ") throws";
- block_open(out);
-
- out << endl;
-
- // Serialize the request
- indent(out) << "try __outProtocol.writeMessageBeginWithName(\"" << funname << "\", "
- << "type: " << (tfunction->is_oneway() ? ".ONEWAY" : ".CALL") << ", "
- << "sequenceID: 0)" << endl;
-
- out << endl;
-
- indent(out) << "let __args = " << argsname << "(";
-
- // write out function parameters
-
- const vector<t_field*>& fields = arg_struct->get_members();
- vector<t_field*>::const_iterator f_iter;
-
- for (f_iter = fields.begin(); f_iter != fields.end();) {
- t_field *tfield = (*f_iter);
- out << tfield->get_name() << ": " << tfield->get_name();
- if (++f_iter != fields.end()) {
- out << ", ";
- }
- }
- out << ")" << endl;
- indent(out) << "try " << argsname << ".writeValue(__args, toProtocol: __outProtocol)" << endl << endl;
-
- indent(out) << "try __outProtocol.writeMessageEnd()" << endl;
-
- block_close(out);
-
- out << endl;
-}
-
-/**
- * Generates a function that will recv the result for a
- * service function via a protocol.
- *
- * @param tservice The service to generate
- * @param tfunction The function to generate
- * @param needs_protocol
- * Wether the first parameter must be a protocol or if
- * the protocol is to be assumed
- */
-void t_swift_generator::generate_swift_service_client_recv_function_implementation(ofstream& out,
- t_service* tservice,
- t_function* tfunction,
- bool needs_protocol) {
-
- // Open function
- indent(out) << "private func recv_" << tfunction->get_name() << "(";
-
- if (needs_protocol) {
- out << "__inProtocol: TProtocol";
- }
-
- out << ") throws";
-
- if (!tfunction->get_returntype()->is_void()) {
- out << " -> " << type_name(tfunction->get_returntype());
- }
-
- block_open(out);
-
- // check for an exception
-
- out << endl;
-
- indent(out) << "try __inProtocol.readResultMessageBegin() " << endl << endl;
-
- string resultname = function_result_helper_struct_type(tservice, tfunction);
- indent(out);
- if (!tfunction->get_returntype()->is_void() || !tfunction->get_xceptions()->get_members().empty()) {
- out << "let __result = ";
- }
- out << "try " << resultname << ".readValueFromProtocol(__inProtocol)" << endl << endl;
-
- indent(out) << "try __inProtocol.readMessageEnd()" << endl << endl;
-
- // Careful, only return _result if not a void function
- if (!tfunction->get_returntype()->is_void()) {
- indent(out) << "if let __success = __result.success";
- block_open(out);
- indent(out) << "return __success" << endl;
- block_close(out);
- }
-
- t_struct* xs = tfunction->get_xceptions();
- const 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) {
- indent(out) << "if let " << (*x_iter)->get_name() << " = __result." << (*x_iter)->get_name();
- block_open(out);
- indent(out) << "throw " << (*x_iter)->get_name() << endl;
- block_close(out);
- }
-
- // If you get here it's an exception, unless a void function
- if (!tfunction->get_returntype()->is_void()) {
- indent(out) << "throw NSError(" << endl;
- indent_up();
- indent(out) << "domain: TApplicationErrorDomain, " << endl;
- indent(out) << "code: Int(TApplicationError.MissingResult.rawValue)," << endl;
- indent(out) << "userInfo: [TApplicationErrorMethodKey: \"" << tfunction->get_name() << "\"])" << endl;
- indent_down();
- }
-
- // Close function
- block_close(out);
-
- out << endl;
-}
-
-/**
- * Generates an invocation of a given the send function for the
- * service function.
- *
- * @param tfunction The service to generate an implementation for
- */
-void t_swift_generator::generate_swift_service_client_send_function_invocation(ofstream& out,
- t_function* tfunction) {
-
- indent(out) << "try send_" << tfunction->get_name() << "(";
-
- t_struct* arg_struct = tfunction->get_arglist();
-
- const vector<t_field*>& fields = arg_struct->get_members();
- vector<t_field*>::const_iterator f_iter;
-
- for (f_iter = fields.begin(); f_iter != fields.end();) {
- out << (*f_iter)->get_name() << ": " << (*f_iter)->get_name();
- if (++f_iter != fields.end()) {
- out << ", ";
- }
- }
-
- out << ")" << endl;
-}
-
-/**
- * Generates an invocation of a given the send function for the
- * service function. This is for asynchronous protocols.
- *
- * @param tfunction The service to generate an implementation for
- */
-void t_swift_generator::generate_swift_service_client_send_async_function_invocation(ofstream& out,
- t_function* tfunction) {
-
- t_struct* arg_struct = tfunction->get_arglist();
- const vector<t_field*>& fields = arg_struct->get_members();
- vector<t_field*>::const_iterator f_iter;
-
- indent(out) << "try send_" << tfunction->get_name() << "(__protocol";
-
- for (f_iter = fields.begin(); f_iter != fields.end(); ++f_iter) {
- out << ", " << (*f_iter)->get_name() << ": " << (*f_iter)->get_name();
- }
-
- out << ")" << endl;
-}
-
-/**
- * Generates a service client protocol implementation via extension.
- *
- * @param tservice The service to generate an implementation for
- */
-void t_swift_generator::generate_swift_service_client_implementation(ofstream& out,
- t_service* tservice) {
-
- string name = tservice->get_name() + "Client";
-
- indent(out) << "extension " << name << " : " << tservice->get_name();
-
- block_open(out);
-
- out << endl;
-
- // generate client method implementations
- 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) {
-
- generate_swift_service_client_send_function_implementation(out, tservice, *f_iter, false);
-
- if (!(*f_iter)->is_oneway()) {
- generate_swift_service_client_recv_function_implementation(out, tservice, *f_iter, false);
- }
-
- // Open function
- indent(out) << "public " << function_signature(*f_iter);
-
- block_open(out);
-
- out << endl;
-
- generate_swift_service_client_send_function_invocation(out, *f_iter);
-
- out << endl;
-
- indent(out) << "try __outProtocol.transport().flush()" << endl << endl;
-
- if (!(*f_iter)->is_oneway()) {
- if ((*f_iter)->get_returntype()->is_void()) {
- indent(out) << "try recv_" << (*f_iter)->get_name() << "()" << endl;
- } else {
- indent(out) << "return try recv_" << (*f_iter)->get_name() << "()" << endl;
- }
- }
-
- block_close(out);
-
- out << endl;
- }
-
- block_close(out);
-
- out << endl;
-}
-
-/**
- * Generates a service asynchronous client protocol implementation via extension.
- *
- * @param tservice The service to generate an implementation for
- */
-void t_swift_generator::generate_swift_service_client_async_implementation(ofstream& out,
- t_service* tservice) {
-
- string name = tservice->get_name() + "AsyncClient";
- string protocol_name = tservice->get_name() + "Async";
-
- indent(out) << "extension " << name << " : " << protocol_name;
-
- block_open(out);
-
- out << endl;
-
- // generate client method implementations
- 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) {
-
- generate_swift_service_client_send_function_implementation(out, tservice, *f_iter, true);
-
- if (!(*f_iter)->is_oneway()) {
- generate_swift_service_client_recv_function_implementation(out, tservice, *f_iter, true);
- }
-
- indent(out) << "public " << async_function_signature(*f_iter);
- block_open(out);
-
- out << endl;
-
- out << indent() << "let __transport = __transportFactory.newTransport()" << endl
- << indent() << "let __protocol = __protocolFactory.newProtocolOnTransport(__transport)" << endl
- << endl;
-
- generate_swift_service_client_send_async_function_invocation(out, *f_iter);
-
- out << endl;
-
- indent(out) << "__transport.flushWithCompletion(";
-
- if ((*f_iter)->is_oneway()) {
- out << "success, failure: failure)" << endl;
- }
- else {
- block_open(out);
- indent(out) << "do";
- block_open(out);
-
- indent(out);
- if (!(*f_iter)->get_returntype()->is_void()) {
- out << "let result = ";
- }
- out << "try self.recv_" << (*f_iter)->get_name() << "(__protocol)" << endl;
-
- out << indent() << "success(";
- if (!(*f_iter)->get_returntype()->is_void()) {
- out << "result";
- }
- out << ")" << endl;
-
- block_close(out);
- indent(out) << "catch let error";
- block_open(out);
- indent(out) << "failure(error as NSError)" << endl;
- block_close(out);
- block_close(out);
- indent(out) << ", failure: failure)" << endl;
- }
-
-
- block_close(out);
-
- out << endl;
-
- // Promise function
- if (promise_kit_) {
-
- indent(out) << "public " << promise_function_signature(*f_iter);
- block_open(out);
-
- out << indent() << "let (__promise, __fulfill, __reject) = Promise<" << type_name((*f_iter)->get_returntype()) << ">.pendingPromise()" << endl << endl
- << indent() << "let __transport = __transportFactory.newTransport()" << endl
- << indent() << "let __protocol = __protocolFactory.newProtocolOnTransport(__transport)" << endl
- << endl;
-
- generate_swift_service_client_send_async_function_invocation(out, *f_iter);
-
- out << endl;
-
- indent(out) << "__transport.flushWithCompletion(";
-
- if ((*f_iter)->is_oneway()) {
- out << "{ __fulfill() }, failure: { __reject($0) })" << endl;
- }
- else {
- block_open(out);
- indent(out) << "do";
- block_open(out);
-
- indent(out);
- if (!(*f_iter)->get_returntype()->is_void()) {
- out << "let result = ";
- }
- out << "try self.recv_" << (*f_iter)->get_name() << "(__protocol)" << endl;
-
- out << indent() << "__fulfill(";
- if (!(*f_iter)->get_returntype()->is_void()) {
- out << "result";
- }
- out << ")" << endl;
-
- block_close(out);
- indent(out) << "catch let error";
- block_open(out);
- indent(out) << "__reject(error)" << endl;
- block_close(out);
- block_close(out);
-
- indent(out) << ", failure: { error in " << endl;
- indent_up();
- indent(out) << "__reject(error)" << endl;
- indent_down();
- indent(out) << "})" << endl;
- }
-
- indent(out) << "return __promise" << endl;
-
- block_close(out);
-
- out << endl;
-
- }
-
- }
-
- block_close(out);
-
- out << endl;
-}
-
-/**
- * Generates a service server implementation.
- *
- * Implemented by generating a block for each service function that
- * handles the processing of that function. The blocks are stored in
- * a map and looked up via function/message name.
- *
- * @param tservice The service to generate an implementation for
- */
-void t_swift_generator::generate_swift_service_server_implementation(ofstream& out,
- t_service* tservice) {
-
- string name = tservice->get_name() + "Processor";
-
- indent(out) << "extension " << name << " : TProcessor";
- block_open(out);
-
- out << endl;
-
- indent(out) << "static let processorHandlers : ProcessorHandlerDictionary =";
- block_open(out);
-
- out << endl;
-
- out << indent() << "var processorHandlers = ProcessorHandlerDictionary()" << endl << endl;
-
- // generate method map for routing incoming calls
- 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) {
-
- t_function* tfunction = *f_iter;
-
- string args_type = function_args_helper_struct_type(tservice, *f_iter);
-
- out << indent() << "processorHandlers[\"" << tfunction->get_name() << "\"] = { sequenceID, inProtocol, outProtocol, handler in" << endl
- << endl;
-
- indent_up();
- out << indent() << "let args = try " << args_type << ".readValueFromProtocol(inProtocol)" << endl
- << endl
- << indent() << "try inProtocol.readMessageEnd()" << endl
- << endl;
-
- if (!tfunction->is_oneway() ) {
- string result_type = function_result_helper_struct_type(tservice, tfunction);
- indent(out) << "var result = " << result_type << "()" << endl;
-
- indent(out) << "do";
- block_open(out);
-
- indent(out);
- if (!tfunction->get_returntype()->is_void()) {
- out << "result.success = ";
- }
- out << "try handler." << function_name(tfunction) << "(";
-
- t_struct* arg_struct = tfunction->get_arglist();
- const vector<t_field*>& fields = arg_struct->get_members();
- vector<t_field*>::const_iterator f_iter;
-
- for (f_iter = fields.begin(); f_iter != fields.end();) {
- string fieldName = (*f_iter)->get_name();
- if (f_iter != fields.begin()) {
- out << fieldName << ": ";
- }
- out << "args." << fieldName;
- if (++f_iter != fields.end()) {
- out << ", ";
- }
- }
-
- out << ")" << endl;
-
- block_close(out);
-
- t_struct* xs = tfunction->get_xceptions();
- const vector<t_field*>& xfields = xs->get_members();
- vector<t_field*>::const_iterator x_iter;
-
- for (x_iter = xfields.begin(); x_iter != xfields.end(); ++x_iter) {
- indent(out) << "catch let error as " << (*x_iter)->get_type()->get_name();
- block_open(out);
- indent(out) << "result." << (*x_iter)->get_name() << " = error" << endl;
- block_close(out);
- }
-
- indent(out) << "catch let error";
- block_open(out);
- out << indent() << "throw error" << endl;
- block_close(out);
-
- out << endl;
-
- if (!tfunction->is_oneway()) {
- out << indent() << "try outProtocol.writeMessageBeginWithName(\"" << tfunction->get_name() << "\", type: .REPLY, sequenceID: sequenceID)" << endl
- << indent() << "try " << result_type << ".writeValue(result, toProtocol: outProtocol)" << endl
- << indent() << "try outProtocol.writeMessageEnd()" << endl;
- }
- }
- block_close(out);
-
- }
-
- indent(out) << "return processorHandlers" << endl;
-
- block_close(out,false);
- out << "()" << endl;
-
- out << endl;
-
- indent(out) << "public func processOnInputProtocol(inProtocol: TProtocol, outputProtocol outProtocol: TProtocol) throws";
- block_open(out);
-
- out << endl;
-
- out << indent() << "let (messageName, _, sequenceID) = try inProtocol.readMessageBegin()" << endl
- << endl
- << indent() << "if let processorHandler = " << name << ".processorHandlers[messageName]";
- block_open(out);
- out << indent() << "do";
- block_open(out);
- out << indent() << "try processorHandler(sequenceID, inProtocol, outProtocol, service)" << endl;
- block_close(out);
- out << indent() << "catch let error as NSError";
- block_open(out);
- out << indent() << "try outProtocol.writeExceptionForMessageName(messageName, sequenceID: sequenceID, ex: error)" << endl;
- block_close(out);
- block_close(out);
- out << indent() << "else";
- block_open(out);
- out << indent() << "try inProtocol.skipType(.STRUCT)" << endl
- << indent() << "try inProtocol.readMessageEnd()" << endl
- << indent() << "try outProtocol.writeExceptionForMessageName(messageName," << endl;
- indent_up();
- out << indent() << "sequenceID: sequenceID," << endl
- << indent() << "ex: NSError(" << endl;
- indent_up();
- out << indent() << "domain: TApplicationErrorDomain, " << endl
- << indent() << "code: Int(TApplicationError.UnknownMethod.rawValue), " << endl
- << indent() << "userInfo: [TApplicationErrorMethodKey: messageName]))" << endl;
- indent_down();
- indent_down();
- block_close(out);
-
- block_close(out);
-
- block_close(out);
- out << endl;
-}
-
-/**
- * Returns an Swift name
- *
- * @param ttype The type
- * @param class_ref Do we want a Class reference istead of a type reference?
- * @return Swift type name, i.e. Dictionary<Key,Value>
- */
-string t_swift_generator::type_name(t_type* ttype, bool is_optional, bool is_forced) {
- string result;
- if (ttype->is_base_type()) {
- result = base_type_name((t_base_type*)ttype);
- } else if (ttype->is_map()) {
- t_map *map = (t_map *)ttype;
- result = "TMap<" + type_name(map->get_key_type()) + ", " + type_name(map->get_val_type()) + ">";
- } else if (ttype->is_set()) {
- t_set *set = (t_set *)ttype;
- result = "TSet<" + type_name(set->get_elem_type()) + ">";
- } else if (ttype->is_list()) {
- t_list *list = (t_list *)ttype;
- result = "TList<" + type_name(list->get_elem_type()) + ">";
- }
- else {
- result = ttype->get_name();
- }
-
- if (is_optional) {
- result += "?";
- }
-
- if (is_forced) {
- result += "!";
- }
-
- return result;
-}
-
-/**
- * Returns the Swift type that corresponds to the thrift type.
- *
- * @param tbase The base type
- */
-string t_swift_generator::base_type_name(t_base_type* type) {
- t_base_type::t_base tbase = type->get_base();
-
- switch (tbase) {
- case t_base_type::TYPE_VOID:
- return "Void";
- case t_base_type::TYPE_STRING:
- if (type->is_binary()) {
- return "TBinary";
- } else {
- return "String";
- }
- case t_base_type::TYPE_BOOL:
- return "Bool";
- case t_base_type::TYPE_I8:
- return "Int8";
- case t_base_type::TYPE_I16:
- return "Int16";
- case t_base_type::TYPE_I32:
- return "Int32";
- case t_base_type::TYPE_I64:
- return "Int64";
- case t_base_type::TYPE_DOUBLE:
- return "Double";
- default:
- throw "compiler error: no Swift name for base type " + t_base_type::t_base_name(tbase);
- }
-}
-
-/**
- * Renders full constant value (as would be seen after an '=')
- *
- */
-void t_swift_generator::render_const_value(ostream& out,
- t_type* type,
- t_const_value* value) {
- 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_STRING:
- out << "\"" << get_escaped_string(value) << "\"";
- break;
- case t_base_type::TYPE_BOOL:
- out << ((value->get_integer() > 0) ? "true" : "false");
- break;
- case t_base_type::TYPE_I8:
- case t_base_type::TYPE_I16:
- case t_base_type::TYPE_I32:
- case t_base_type::TYPE_I64:
- out << type_name(type) << "(" << value->get_integer() << ")";
- break;
- case t_base_type::TYPE_DOUBLE:
- out << type_name(type) << "(";
- if (value->get_type() == t_const_value::CV_INTEGER) {
- out << value->get_integer();
- } else {
- out << value->get_double();
- }
- out << ")";
- break;
- default:
- throw "compiler error: no const of base type " + t_base_type::t_base_name(tbase);
- }
- } else if (type->is_enum()) {
- out << value->get_identifier();
- } else if (type->is_struct() || type->is_xception()) {
-
- out << type_name(type) << "(";
-
- 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 (f_iter = fields.begin(); f_iter != fields.end();) {
- t_field* tfield = *f_iter;
- t_const_value* value = NULL;
- for (v_iter = val.begin(); v_iter != val.end(); ++v_iter) {
- if (tfield->get_name() == v_iter->first->get_string()) {
- value = v_iter->second;
- }
- }
-
- if (value) {
- out << tfield->get_name() << ": ";
- render_const_value(out, tfield->get_type(), value);
- }
- else if (!field_is_optional(tfield)) {
- throw "constant error: required field " + type->get_name() + "." + tfield->get_name() + " has no value";
- }
-
- if (++f_iter != fields.end()) {
- out << ", ";
- }
- }
-
- out << ")";
-
- } else if (type->is_map()) {
-
- out << "[";
-
- 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();) {
-
- render_const_value(out, ktype, v_iter->first);
- out << ": ";
- render_const_value(out, vtype, v_iter->second);
-
- if (++v_iter != val.end()) {
- out << ", ";
- }
- }
-
- out << "]";
-
- } else if (type->is_list()) {
-
- out << "[";
-
- t_type* etype = ((t_list*)type)->get_elem_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();) {
-
- render_const_value(out, etype, v_iter->first);
-
- if (++v_iter != val.end()) {
- out << ", ";
- }
- }
-
- out << "]";
-
- } else if (type->is_set()) {
-
- out << "[";
-
- t_type* etype = ((t_set*)type)->get_elem_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();) {
-
- render_const_value(out, etype, v_iter->first);
-
- if (++v_iter != val.end()) {
- out << ", ";
- }
- }
-
- out << "]";
-
- } else {
- throw "compiler error: no const of type " + type->get_name();
- }
-
-}
-
-/**
- * Declares an Swift property.
- *
- * @param tfield The field to declare a property for
- */
-string t_swift_generator::declare_property(t_field* tfield, bool is_private) {
-
- string visibility = is_private ? "private" : "public";
-
- ostringstream render;
-
- render << visibility << " var " << maybe_escape_identifier(tfield->get_name());
-
- if (field_is_optional(tfield)) {
- render << " : " << type_name(tfield->get_type(), true);
- }
- else {
- render << " = " << type_name(tfield->get_type(), false) << "()";
- }
-
- return render.str();
-}
-
-/**
- * Renders a function signature
- *
- * @param tfunction Function definition
- * @return String of rendered function definition
- */
-string t_swift_generator::function_signature(t_function* tfunction) {
-
- string result = "func " + function_name(tfunction);
-
- result += "(" + argument_list(tfunction->get_arglist(), "", false) + ") throws";
-
- t_type* ttype = tfunction->get_returntype();
- if (!ttype->is_void()) {
- result += " -> " + type_name(ttype);
- }
-
- return result;
-}
-
-/**
- * Renders a function signature that returns asynchronously via blocks.
- *
- * @param tfunction Function definition
- * @return String of rendered function definition
- */
-string t_swift_generator::async_function_signature(t_function* tfunction) {
- t_type* ttype = tfunction->get_returntype();
- t_struct* targlist = tfunction->get_arglist();
- string response_param = "(" + ((ttype->is_void()) ? "" : type_name(ttype)) + ") -> Void";
- string result = "func " + function_name(tfunction);
- result += "(" + argument_list(tfunction->get_arglist(), "", false)
- + (targlist->get_members().size() ? ", " : "")
- + "success: " + response_param + ", "
- + "failure: (NSError) -> Void) throws";
- return result;
-}
-
-/**
- * Renders a function signature that returns asynchronously via promises.
- *
- * @param tfunction Function definition
- * @return String of rendered function definition
- */
-string t_swift_generator::promise_function_signature(t_function* tfunction) {
- return "func " + function_name(tfunction) + "(" + argument_list(tfunction->get_arglist(), "", false) + ") throws "
- + "-> Promise<" + type_name(tfunction->get_returntype()) + ">";
-}
-
-/**
- * Renders a verbose function name suitable for a Swift method
- */
-string t_swift_generator::function_name(t_function* tfunction) {
- string name = tfunction->get_name();
- if (!tfunction->get_arglist()->get_members().empty()) {
- string first_arg = tfunction->get_arglist()->get_members().front()->get_name();
- if (name.size() < first_arg.size() ||
- lowercase(name.substr(name.size()-first_arg.size())) != lowercase(first_arg)) {
- name += "With" + capitalize(tfunction->get_arglist()->get_members()[0]->get_name());
- }
- }
- return name;
-}
-
-/**
- * Renders a Swift method argument list
- */
-string t_swift_generator::argument_list(t_struct* tstruct, string protocol_name, bool is_internal) {
- string result = "";
- bool include_protocol = !protocol_name.empty();
-
- const vector<t_field*>& fields = tstruct->get_members();
- vector<t_field*>::const_iterator f_iter;
-
- if (include_protocol) {
- result += protocol_name + ": TProtocol";
- if (!fields.empty()) {
- result += ", ";
- }
- }
- else if (!fields.empty() && is_internal) {
- // Force first argument to be named
- result += fields.front()->get_name() + " ";
- }
-
- for (f_iter = fields.begin(); f_iter != fields.end();) {
- t_field* arg = *f_iter;
- result += arg->get_name() + ": " + type_name(arg->get_type());
-
- if (++f_iter != fields.end()) {
- result += ", ";
- }
- }
- return result;
-}
-
-/**
- * https://developer.apple.com/library/ios/documentation/Swift/Conceptual/Swift_Programming_Language/LexicalStructure.html
- *
- */
-
-void t_swift_generator::populate_reserved_words() {
- swift_reserved_words_.insert("Self");
- swift_reserved_words_.insert("associatedtype");
- swift_reserved_words_.insert("defer");
- swift_reserved_words_.insert("deinit");
- swift_reserved_words_.insert("dynamicType");
- swift_reserved_words_.insert("enum");
- swift_reserved_words_.insert("extension");
- swift_reserved_words_.insert("fallthrough");
- swift_reserved_words_.insert("false");
- swift_reserved_words_.insert("func");
- swift_reserved_words_.insert("guard");
- swift_reserved_words_.insert("init");
- swift_reserved_words_.insert("inout");
- swift_reserved_words_.insert("internal");
- swift_reserved_words_.insert("let");
- swift_reserved_words_.insert("operator");
- swift_reserved_words_.insert("protocol");
- swift_reserved_words_.insert("repeat");
- swift_reserved_words_.insert("rethrows");
- swift_reserved_words_.insert("struct");
- swift_reserved_words_.insert("subscript");
- swift_reserved_words_.insert("throws");
- swift_reserved_words_.insert("true");
- swift_reserved_words_.insert("typealias");
- swift_reserved_words_.insert("where");
-}
-
-string t_swift_generator::maybe_escape_identifier(const string& identifier) {
- if (swift_reserved_words_.find(identifier) != swift_reserved_words_.end()) {
- return "`" + identifier + "`";
- }
- return identifier;
-}
-
-/**
- * Converts the parse type to a Swift TType enumeration.
- */
-string t_swift_generator::type_to_enum(t_type* type, bool qualified) {
- type = get_true_type(type);
-
- string result = qualified ? "TType." : ".";
-
- 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 result + "STRING";
- case t_base_type::TYPE_BOOL:
- return result + "BOOL";
- case t_base_type::TYPE_I8:
- return result + "BYTE";
- case t_base_type::TYPE_I16:
- return result + "I16";
- case t_base_type::TYPE_I32:
- return result + "I32";
- case t_base_type::TYPE_I64:
- return result + "I64";
- case t_base_type::TYPE_DOUBLE:
- return result + "DOUBLE";
- }
- } else if (type->is_enum()) {
- return result + "I32";
- } else if (type->is_struct() || type->is_xception()) {
- return result + "STRUCT";
- } else if (type->is_map()) {
- return result + "MAP";
- } else if (type->is_set()) {
- return result + "SET";
- } else if (type->is_list()) {
- return result + "LIST";
- }
-
- throw "INVALID TYPE IN type_to_enum: " + type->get_name();
-}
-
-
-THRIFT_REGISTER_GENERATOR(
- swift,
- "Swift",
- " log_unexpected: Log every time an unexpected field ID or type is encountered.\n"
- " debug_descriptions:\n"
- " Allow use of debugDescription so the app can add description via a cateogory/extension\n"
- " async_clients: Generate clients which invoke asynchronously via block syntax.\n"
- " promise_kit: Generate clients which invoke asynchronously via promises.\n")