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From r...@apache.org
Subject [43/51] [abbrv] [partial] incubator-hawq git commit: HAWQ-735. Import thrift-0.9.3 into depends/thirdparty/thrift folder
Date Wed, 18 May 2016 02:50:56 GMT
http://git-wip-us.apache.org/repos/asf/incubator-hawq/blob/d709f67d/depends/thirdparty/thrift/compiler/cpp/src/generate/t_cocoa_generator.cc
----------------------------------------------------------------------
diff --git a/depends/thirdparty/thrift/compiler/cpp/src/generate/t_cocoa_generator.cc b/depends/thirdparty/thrift/compiler/cpp/src/generate/t_cocoa_generator.cc
new file mode 100644
index 0000000..a90c937
--- /dev/null
+++ b/depends/thirdparty/thrift/compiler/cpp/src/generate/t_cocoa_generator.cc
@@ -0,0 +1,2856 @@
+/*
+ * 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 <stdlib.h>
+#include <sys/stat.h>
+#include <sstream>
+#include "t_oop_generator.h"
+#include "platform.h"
+
+using std::map;
+using std::ofstream;
+using std::ostringstream;
+using std::string;
+using std::stringstream;
+using std::vector;
+
+static const string endl = "\n"; // avoid ostream << std::endl flushes
+
+/**
+ * Objective-C code generator.
+ *
+ * mostly copy/pasting/tweaking from mcslee's work.
+ */
+class t_cocoa_generator : public t_oop_generator {
+public:
+  t_cocoa_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("log_unexpected");
+    log_unexpected_ = (iter != parsed_options.end());
+
+    iter = parsed_options.find("validate_required");
+    validate_required_ = (iter != parsed_options.end());
+
+    iter = parsed_options.find("async_clients");
+    async_clients_ = (iter != parsed_options.end());
+
+    out_dir_base_ = "gen-cocoa";
+  }
+
+  /**
+   * 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);
+  void generate_xception(t_struct* txception);
+  void generate_service(t_service* tservice);
+
+  void print_const_value(std::ofstream& out,
+                         std::string name,
+                         t_type* type,
+                         t_const_value* value,
+                         bool defval = false,
+                         bool is_property = false);
+  std::string render_const_value(ofstream& out,
+                                 t_type* type,
+                                 t_const_value* value,
+                                 bool containerize_it = false);
+
+  void generate_cocoa_struct(t_struct* tstruct, bool is_exception);
+  void generate_cocoa_struct_interface(std::ofstream& out,
+                                       t_struct* tstruct,
+                                       bool is_xception = false);
+  void generate_cocoa_struct_implementation(std::ofstream& out,
+                                            t_struct* tstruct,
+                                            bool is_xception = false,
+                                            bool is_result = false);
+  void generate_cocoa_struct_initializer_signature(std::ofstream& out, t_struct* tstruct);
+  void generate_cocoa_struct_init_with_coder_method(ofstream& out,
+                                                    t_struct* tstruct,
+                                                    bool is_exception);
+  void generate_cocoa_struct_encode_with_coder_method(ofstream& out,
+                                                      t_struct* tstruct,
+                                                      bool is_exception);
+  void generate_cocoa_struct_hash_method(ofstream& out, t_struct* tstruct);
+  void generate_cocoa_struct_is_equal_method(ofstream& out, t_struct* tstruct);
+  void generate_cocoa_struct_field_accessor_declarations(std::ofstream& out,
+                                                         t_struct* tstruct,
+                                                         bool is_exception);
+  void generate_cocoa_struct_field_accessor_implementations(std::ofstream& out,
+                                                            t_struct* tstruct,
+                                                            bool is_exception);
+  void generate_cocoa_struct_reader(std::ofstream& out, t_struct* tstruct);
+  void generate_cocoa_struct_result_writer(std::ofstream& out, t_struct* tstruct);
+  void generate_cocoa_struct_writer(std::ofstream& out, t_struct* tstruct);
+  void generate_cocoa_struct_validator(std::ofstream& out, t_struct* tstruct);
+  void generate_cocoa_struct_description(std::ofstream& out, t_struct* tstruct);
+
+  std::string function_result_helper_struct_type(t_function* tfunction);
+  std::string function_args_helper_struct_type(t_function* tfunction);
+  void generate_function_helpers(t_function* tfunction);
+
+  /**
+   * Service-level generation functions
+   */
+
+  void generate_cocoa_service_protocol(std::ofstream& out, t_service* tservice);
+  void generate_cocoa_service_async_protocol(std::ofstream& out, t_service* tservice);
+
+  void generate_cocoa_service_client_interface(std::ofstream& out, t_service* tservice);
+  void generate_cocoa_service_client_async_interface(std::ofstream& out, t_service* tservice);
+
+  void generate_cocoa_service_client_send_function_implementation(ofstream& out,
+                                                                  t_function* tfunction);
+  void generate_cocoa_service_client_send_function_invocation(ofstream& out, t_function* tfunction);
+  void generate_cocoa_service_client_recv_function_implementation(ofstream& out,
+                                                                  t_function* tfunction);
+  void generate_cocoa_service_client_implementation(std::ofstream& out, t_service* tservice);
+  void generate_cocoa_service_client_async_implementation(std::ofstream& out, t_service* tservice);
+
+  void generate_cocoa_service_server_interface(std::ofstream& out, t_service* tservice);
+  void generate_cocoa_service_server_implementation(std::ofstream& out, t_service* tservice);
+  void generate_cocoa_service_helpers(t_service* tservice);
+  void generate_service_client(t_service* tservice);
+  void generate_service_server(t_service* tservice);
+  void generate_process_function(t_service* tservice, t_function* tfunction);
+
+  /**
+   * Serialization constructs
+   */
+
+  void generate_deserialize_field(std::ofstream& out, t_field* tfield, std::string fieldName);
+
+  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 = "");
+
+  void generate_serialize_field(std::ofstream& out, t_field* tfield, std::string prefix = "");
+
+  void generate_serialize_struct(std::ofstream& out, t_struct* tstruct, std::string fieldName = "");
+
+  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,
+                                      std::string map);
+
+  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 index,
+                                       std::string listName);
+
+  /**
+   * Helper rendering functions
+   */
+
+  std::string cocoa_prefix();
+  std::string cocoa_imports();
+  std::string cocoa_thrift_imports();
+  std::string type_name(t_type* ttype, bool class_ref = false);
+  std::string base_type_name(t_base_type* tbase);
+  std::string declare_field(t_field* tfield);
+  std::string declare_property(t_field* tfield);
+  std::string function_signature(t_function* tfunction);
+  std::string async_function_signature(t_function* tfunction);
+  std::string argument_list(t_struct* tstruct);
+  std::string type_to_enum(t_type* ttype);
+  std::string format_string_for_type(t_type* type);
+  std::string call_field_setter(t_field* tfield, std::string fieldName);
+  std::string containerize(t_type* ttype, std::string fieldName);
+  std::string decontainerize(t_field* tfield, std::string fieldName);
+
+  bool type_can_be_null(t_type* ttype) {
+    ttype = get_true_type(ttype);
+
+    return ttype->is_container() || ttype->is_struct() || ttype->is_xception()
+           || ttype->is_string();
+  }
+
+private:
+  std::string cocoa_prefix_;
+  std::string constants_declarations_;
+
+  /**
+   * File streams
+   */
+
+  std::ofstream f_header_;
+  std::ofstream f_impl_;
+
+  bool log_unexpected_;
+  bool validate_required_;
+  bool async_clients_;
+};
+
+/**
+ * Prepares for file generation by opening up the necessary file output
+ * streams.
+ */
+void t_cocoa_generator::init_generator() {
+  // Make output directory
+  MKDIR(get_out_dir().c_str());
+  cocoa_prefix_ = program_->get_namespace("cocoa");
+
+  // we have a .h header file...
+  string f_header_name = program_name_ + ".h";
+  string f_header_fullname = get_out_dir() + f_header_name;
+  f_header_.open(f_header_fullname.c_str());
+
+  f_header_ << autogen_comment() << endl;
+
+  f_header_ << cocoa_imports() << cocoa_thrift_imports();
+
+  // ...and a .m implementation file
+  string f_impl_name = get_out_dir() + program_name_ + ".m";
+  f_impl_.open(f_impl_name.c_str());
+
+  f_impl_ << autogen_comment() << endl;
+
+  f_impl_ << cocoa_imports() << cocoa_thrift_imports() << "#import \"" << f_header_name << "\""
+          << endl << endl;
+}
+
+/**
+ * Prints standard Cocoa imports
+ *
+ * @return List of imports for Cocoa libraries
+ */
+string t_cocoa_generator::cocoa_imports() {
+  return string() + "#import <Foundation/Foundation.h>\n" + "\n";
+}
+
+/**
+ * Prints thrift runtime imports
+ *
+ * @return List of imports necessary for thrift runtime
+ */
+string t_cocoa_generator::cocoa_thrift_imports() {
+  string result = string() + "#import \"TProtocol.h\"\n" + "#import \"TApplicationException.h\"\n"
+                  + "#import \"TProtocolException.h\"\n" 
+                  + "#import \"TProtocolUtil.h\"\n"
+                  + "#import \"TProcessor.h\"\n" 
+                  + "#import \"TObjective-C.h\"\n"
+                  + "#import \"TBase.h\"\n"
+                  + "#import \"TAsyncTransport.h\"\n"
+                  + "#import \"TProtocolFactory.h\"\n"
+                  + "#import \"TBaseClient.h\"\n" 
+                  + "\n";
+
+  // Include other Thrift includes
+  const vector<t_program*>& includes = program_->get_includes();
+  for (size_t i = 0; i < includes.size(); ++i) {
+    result += "#import \"" + includes[i]->get_name() + ".h\"" + "\n";
+  }
+  result += "\n";
+
+  return result;
+}
+
+/**
+ * Finish up generation.
+ */
+void t_cocoa_generator::close_generator() {
+  // stick our constants declarations at the end of the header file
+  // since they refer to things we are defining.
+  f_header_ << constants_declarations_ << endl;
+}
+
+/**
+ * Generates a typedef. This is just a simple 1-liner in objective-c
+ *
+ * @param ttypedef The type definition
+ */
+void t_cocoa_generator::generate_typedef(t_typedef* ttypedef) {
+  f_header_ << indent() << "typedef " << type_name(ttypedef->get_type()) << " " << cocoa_prefix_
+            << ttypedef->get_symbolic() << ";" << endl << endl;
+}
+
+/**
+ * Generates code for an enumerated type. In Objective-C, this is
+ * essentially the same as the thrift definition itself, using the
+ * enum keyword in Objective-C.  For namespace purposes, the name of
+ * the enum plus an underscore is prefixed onto each element.
+ *
+ * @param tenum The enumeration
+ */
+void t_cocoa_generator::generate_enum(t_enum* tenum) {
+  f_header_ << indent() << "enum " << cocoa_prefix_ << tenum->get_name() << " {" << endl;
+  indent_up();
+
+  vector<t_enum_value*> constants = tenum->get_constants();
+  vector<t_enum_value*>::iterator c_iter;
+  bool first = true;
+  for (c_iter = constants.begin(); c_iter != constants.end(); ++c_iter) {
+    if (first) {
+      first = false;
+    } else {
+      f_header_ << "," << endl;
+    }
+    f_header_ << indent() << tenum->get_name() << "_" << (*c_iter)->get_name();
+    f_header_ << " = " << (*c_iter)->get_value();
+  }
+
+  indent_down();
+  f_header_ << endl << "};" << endl << endl;
+}
+
+/**
+ * Generates a class that holds all the constants.  Primitive values
+ * could have been placed outside this class, but I just put
+ * everything in for consistency.
+ */
+void t_cocoa_generator::generate_consts(std::vector<t_const*> consts) {
+  std::ostringstream const_interface;
+  string constants_class_name = cocoa_prefix_ + program_name_ + "Constants";
+
+  const_interface << "@interface " << constants_class_name << " : NSObject ";
+  scope_up(const_interface);
+  scope_down(const_interface);
+
+  // getter method for each constant defined.
+  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();
+    const_interface << "+ (" << type_name(type) << ") " << name << ";" << endl;
+  }
+
+  const_interface << "@end";
+
+  // this gets spit into the header file in ::close_generator
+  constants_declarations_ = const_interface.str();
+
+  // static variables in the .m hold all constant values
+  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_impl_ << "static " << type_name(type) << " " << cocoa_prefix_ << name;
+    if (!type->is_container() && !type->is_struct()) {
+      f_impl_ << " = " << render_const_value(f_impl_, type, (*c_iter)->get_value());
+    }
+    f_impl_ << ";" << endl;
+  }
+  f_impl_ << endl;
+
+  f_impl_ << "@implementation " << constants_class_name << endl;
+
+  // initialize complex constants when the class is loaded
+  f_impl_ << "+ (void) initialize ";
+  scope_up(f_impl_);
+
+  for (c_iter = consts.begin(); c_iter != consts.end(); ++c_iter) {
+    if ((*c_iter)->get_type()->is_container() || (*c_iter)->get_type()->is_struct()) {
+      print_const_value(f_impl_,
+                        cocoa_prefix_ + (*c_iter)->get_name(),
+                        (*c_iter)->get_type(),
+                        (*c_iter)->get_value(),
+                        false,
+                        false);
+      f_impl_ << ";" << endl;
+    }
+  }
+  scope_down(f_impl_);
+
+  // getter method for each constant
+  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_impl_ << "+ (" << type_name(type) << ") " << name;
+    scope_up(f_impl_);
+    indent(f_impl_) << "return " << cocoa_prefix_ << name << ";" << endl;
+    scope_down(f_impl_);
+  }
+
+  f_impl_ << "@end" << endl << endl;
+}
+
+/**
+ * Generates a struct definition for a thrift data type. This is a class
+ * with protected data members, read(), write(), and getters and setters.
+ *
+ * @param tstruct The struct definition
+ */
+void t_cocoa_generator::generate_struct(t_struct* tstruct) {
+  generate_cocoa_struct_interface(f_header_, tstruct, false);
+  generate_cocoa_struct_implementation(f_impl_, tstruct, false);
+}
+
+/**
+ * Exceptions are structs, but they inherit from NSException
+ *
+ * @param tstruct The struct definition
+ */
+void t_cocoa_generator::generate_xception(t_struct* txception) {
+  generate_cocoa_struct_interface(f_header_, txception, true);
+  generate_cocoa_struct_implementation(f_impl_, txception, true);
+}
+
+/**
+ * Generate the interface for a struct
+ *
+ * @param tstruct The struct definition
+ */
+void t_cocoa_generator::generate_cocoa_struct_interface(ofstream& out,
+                                                        t_struct* tstruct,
+                                                        bool is_exception) {
+  out << "@interface " << cocoa_prefix_ << tstruct->get_name() << " : ";
+
+  if (is_exception) {
+    out << "NSException ";
+  } else {
+    out << "NSObject ";
+  }
+  out << "<TBase, NSCoding> ";
+
+  scope_up(out);
+
+  // members are protected.  this is redundant, but explicit.
+  //  f_header_ << endl << "@protected:" << endl;
+
+  const vector<t_field*>& members = tstruct->get_members();
+
+  // member varialbes
+  vector<t_field*>::const_iterator m_iter;
+  for (m_iter = members.begin(); m_iter != members.end(); ++m_iter) {
+    out << indent() << declare_field(*m_iter) << endl;
+  }
+
+  if (members.size() > 0) {
+    out << endl;
+    // isset fields
+    for (m_iter = members.begin(); m_iter != members.end(); ++m_iter) {
+      indent(out) << "BOOL __" << (*m_iter)->get_name() << "_isset;" << endl;
+    }
+  }
+
+  scope_down(out);
+  out << endl;
+
+  // properties
+  if (members.size() > 0) {
+    out << "#if TARGET_OS_IPHONE || (MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5)"
+        << endl;
+    for (m_iter = members.begin(); m_iter != members.end(); ++m_iter) {
+      out << indent() << declare_property(*m_iter) << endl;
+    }
+    out << "#endif" << endl << endl;
+  }
+
+  // default initializer
+  out << indent() << "- (id) init;" << endl;
+
+  // initializer for all fields
+  if (!members.empty()) {
+    generate_cocoa_struct_initializer_signature(out, tstruct);
+    out << ";" << endl;
+  }
+  out << endl;
+
+  // read and write
+  out << "- (void) read: (id <TProtocol>) inProtocol;" << endl;
+  out << "- (void) write: (id <TProtocol>) outProtocol;" << endl;
+  out << endl;
+
+  // validator
+  out << "- (void) validate;" << endl << endl;
+
+  // getters and setters
+  generate_cocoa_struct_field_accessor_declarations(out, tstruct, is_exception);
+
+  out << "@end" << endl << endl;
+}
+
+/**
+ * Generate signature for initializer of struct with a parameter for
+ * each field.
+ */
+void t_cocoa_generator::generate_cocoa_struct_initializer_signature(ofstream& out,
+                                                                    t_struct* tstruct) {
+  const vector<t_field*>& members = tstruct->get_members();
+  vector<t_field*>::const_iterator m_iter;
+  indent(out) << "- (id) initWith";
+  for (m_iter = members.begin(); m_iter != members.end();) {
+    if (m_iter == members.begin()) {
+      out << capitalize((*m_iter)->get_name());
+    } else {
+      out << (*m_iter)->get_name();
+    }
+    out << ": (" << type_name((*m_iter)->get_type()) << ") " << (*m_iter)->get_name();
+    ++m_iter;
+    if (m_iter != members.end()) {
+      out << " ";
+    }
+  }
+}
+
+/**
+ * Generate getter and setter declarations for all fields, plus an
+ * IsSet getter.
+ */
+void t_cocoa_generator::generate_cocoa_struct_field_accessor_declarations(ofstream& out,
+                                                                          t_struct* tstruct,
+                                                                          bool is_exception) {
+  (void)is_exception;
+  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 << indent() << "#if !__has_feature(objc_arc)" << endl;
+    out << indent() << "- (" << type_name((*m_iter)->get_type()) << ") "
+        << decapitalize((*m_iter)->get_name()) << ";" << endl;
+    out << indent() << "- (void) set" << capitalize((*m_iter)->get_name()) << ": ("
+        << type_name((*m_iter)->get_type()) << ") " << (*m_iter)->get_name() << ";" << endl;
+    out << indent() << "#endif" << endl;
+    out << indent() << "- (BOOL) " << (*m_iter)->get_name() << "IsSet;" << endl << endl;
+  }
+}
+
+/**
+ * Generate the initWithCoder method for this struct so it's compatible with
+ * the NSCoding protocol
+ */
+void t_cocoa_generator::generate_cocoa_struct_init_with_coder_method(ofstream& out,
+                                                                     t_struct* tstruct,
+                                                                     bool is_exception) {
+  indent(out) << "- (id) initWithCoder: (NSCoder *) decoder" << endl;
+  scope_up(out);
+  if (is_exception) {
+    // NSExceptions conform to NSCoding, so we can call super
+    out << indent() << "self = [super initWithCoder: decoder];" << endl;
+  } else {
+    out << indent() << "self = [super init];" << endl;
+  }
+
+  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) {
+    t_type* t = get_true_type((*m_iter)->get_type());
+    out << indent() << "if ([decoder containsValueForKey: @\"" << (*m_iter)->get_name() << "\"])"
+        << endl;
+    scope_up(out);
+    out << indent() << "__" << (*m_iter)->get_name() << " = ";
+    if (type_can_be_null(t)) {
+      out << "[[decoder decodeObjectForKey: @\"" << (*m_iter)->get_name() << "\"] retain_stub];"
+          << endl;
+    } else if (t->is_enum()) {
+      out << "[decoder decodeIntForKey: @\"" << (*m_iter)->get_name() << "\"];" << endl;
+    } else {
+      t_base_type::t_base tbase = ((t_base_type*)t)->get_base();
+      switch (tbase) {
+      case t_base_type::TYPE_BOOL:
+        out << "[decoder decodeBoolForKey: @\"" << (*m_iter)->get_name() << "\"];" << endl;
+        break;
+      case t_base_type::TYPE_BYTE:
+        out << "[decoder decodeIntForKey: @\"" << (*m_iter)->get_name() << "\"];" << endl;
+        break;
+      case t_base_type::TYPE_I16:
+        out << "[decoder decodeIntForKey: @\"" << (*m_iter)->get_name() << "\"];" << endl;
+        break;
+      case t_base_type::TYPE_I32:
+        out << "[decoder decodeInt32ForKey: @\"" << (*m_iter)->get_name() << "\"];" << endl;
+        break;
+      case t_base_type::TYPE_I64:
+        out << "[decoder decodeInt64ForKey: @\"" << (*m_iter)->get_name() << "\"];" << endl;
+        break;
+      case t_base_type::TYPE_DOUBLE:
+        out << "[decoder decodeDoubleForKey: @\"" << (*m_iter)->get_name() << "\"];" << endl;
+        break;
+      default:
+        throw "compiler error: don't know how to decode thrift type: "
+            + t_base_type::t_base_name(tbase);
+      }
+    }
+    out << indent() << "__" << (*m_iter)->get_name() << "_isset = YES;" << endl;
+    scope_down(out);
+  }
+
+  out << indent() << "return self;" << endl;
+  scope_down(out);
+  out << endl;
+}
+
+/**
+ * Generate the encodeWithCoder method for this struct so it's compatible with
+ * the NSCoding protocol
+ */
+void t_cocoa_generator::generate_cocoa_struct_encode_with_coder_method(ofstream& out,
+                                                                       t_struct* tstruct,
+                                                                       bool is_exception) {
+  indent(out) << "- (void) encodeWithCoder: (NSCoder *) encoder" << endl;
+  scope_up(out);
+  if (is_exception) {
+    // NSExceptions conform to NSCoding, so we can call super
+    out << indent() << "[super encodeWithCoder: encoder];" << endl;
+  }
+
+  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) {
+    t_type* t = get_true_type((*m_iter)->get_type());
+    out << indent() << "if (__" << (*m_iter)->get_name() << "_isset)" << endl;
+    scope_up(out);
+    // out << indent() << "__" << (*m_iter)->get_name() << " = ";
+    if (type_can_be_null(t)) {
+      out << indent() << "[encoder encodeObject: __" << (*m_iter)->get_name() << " forKey: @\""
+          << (*m_iter)->get_name() << "\"];" << endl;
+    } else if (t->is_enum()) {
+      out << indent() << "[encoder encodeInt: __" << (*m_iter)->get_name() << " forKey: @\""
+          << (*m_iter)->get_name() << "\"];" << endl;
+    } else {
+      t_base_type::t_base tbase = ((t_base_type*)t)->get_base();
+      switch (tbase) {
+      case t_base_type::TYPE_BOOL:
+        out << indent() << "[encoder encodeBool: __" << (*m_iter)->get_name() << " forKey: @\""
+            << (*m_iter)->get_name() << "\"];" << endl;
+        break;
+      case t_base_type::TYPE_BYTE:
+        out << indent() << "[encoder encodeInt: __" << (*m_iter)->get_name() << " forKey: @\""
+            << (*m_iter)->get_name() << "\"];" << endl;
+        break;
+      case t_base_type::TYPE_I16:
+        out << indent() << "[encoder encodeInt: __" << (*m_iter)->get_name() << " forKey: @\""
+            << (*m_iter)->get_name() << "\"];" << endl;
+        break;
+      case t_base_type::TYPE_I32:
+        out << indent() << "[encoder encodeInt32: __" << (*m_iter)->get_name() << " forKey: @\""
+            << (*m_iter)->get_name() << "\"];" << endl;
+        break;
+      case t_base_type::TYPE_I64:
+        out << indent() << "[encoder encodeInt64: __" << (*m_iter)->get_name() << " forKey: @\""
+            << (*m_iter)->get_name() << "\"];" << endl;
+        break;
+      case t_base_type::TYPE_DOUBLE:
+        out << indent() << "[encoder encodeDouble: __" << (*m_iter)->get_name() << " forKey: @\""
+            << (*m_iter)->get_name() << "\"];" << endl;
+        break;
+      default:
+        throw "compiler error: don't know how to encode thrift type: "
+            + t_base_type::t_base_name(tbase);
+      }
+    }
+    scope_down(out);
+  }
+
+  scope_down(out);
+  out << endl;
+}
+
+/**
+ * Generate the hash method for this struct
+ */
+void t_cocoa_generator::generate_cocoa_struct_hash_method(ofstream& out, t_struct* tstruct) {
+  indent(out) << "- (NSUInteger) hash" << endl;
+  scope_up(out);
+  out << indent() << "NSUInteger hash = 17;" << endl;
+
+  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) {
+    t_type* t = get_true_type((*m_iter)->get_type());
+    out << indent() << "hash = (hash * 31) ^ __" << (*m_iter)->get_name()
+        << "_isset ? 2654435761 : 0;" << endl;
+    out << indent() << "if (__" << (*m_iter)->get_name() << "_isset)" << endl;
+    scope_up(out);
+    if (type_can_be_null(t)) {
+      out << indent() << "hash = (hash * 31) ^ [__" << (*m_iter)->get_name() << " hash];" << endl;
+    } else {
+      out << indent() << "hash = (hash * 31) ^ [@(__" << (*m_iter)->get_name() << ") hash];"
+          << endl;
+    }
+    scope_down(out);
+  }
+
+  out << indent() << "return hash;" << endl;
+  scope_down(out);
+  out << endl;
+}
+
+/**
+ * Generate the isEqual method for this struct
+ */
+void t_cocoa_generator::generate_cocoa_struct_is_equal_method(ofstream& out, t_struct* tstruct) {
+  indent(out) << "- (BOOL) isEqual: (id) anObject" << endl;
+  scope_up(out);
+
+  indent(out) << "if (self == anObject) {" << endl;
+  indent_up();
+  indent(out) << "return YES;" << endl;
+  indent_down();
+  indent(out) << "}" << endl;
+
+  string class_name = cocoa_prefix_ + tstruct->get_name();
+
+  indent(out) << "if (![anObject isKindOfClass:[" << class_name << " class]]) {" << endl;
+  indent_up();
+  indent(out) << "return NO;" << endl;
+  indent_down();
+  indent(out) << "}" << endl;
+
+  indent(out) << class_name << " *other = (" << class_name << " *)anObject;" << endl;
+
+  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) {
+    t_type* t = get_true_type((*m_iter)->get_type());
+    string name = (*m_iter)->get_name();
+    if (type_can_be_null(t)) {
+      out << indent() << "if ((__" << name << "_isset != other->__" << name << "_isset) ||" << endl
+          << indent() << "    "
+          << "(__" << name << "_isset && "
+          << "((__" << name << " || other->__" << name << ") && "
+          << "![__" << name << " isEqual:other->__" << name << "]))) {" << endl;
+    } else {
+      out << indent() << "if ((__" << name << "_isset != other->__" << name << "_isset) ||" << endl
+          << indent() << "    "
+          << "(__" << name << "_isset && "
+          << "(__" << name << " != other->__" << name << "))) {" << endl;
+    }
+    indent_up();
+    indent(out) << "return NO;" << endl;
+    indent_down();
+    indent(out) << "}" << endl;
+  }
+
+  out << indent() << "return YES;" << endl;
+  scope_down(out);
+  out << endl;
+}
+
+/**
+ * Generate struct implementation.
+ *
+ * @param tstruct      The struct definition
+ * @param is_exception Is this an exception?
+ * @param is_result    If this is a result it needs a different writer
+ */
+void t_cocoa_generator::generate_cocoa_struct_implementation(ofstream& out,
+                                                             t_struct* tstruct,
+                                                             bool is_exception,
+                                                             bool is_result) {
+  indent(out) << "@implementation " << cocoa_prefix_ << tstruct->get_name() << endl << endl;
+
+  const vector<t_field*>& members = tstruct->get_members();
+  vector<t_field*>::const_iterator m_iter;
+
+  // exceptions need to call the designated initializer on NSException
+  if (is_exception) {
+    out << indent() << "- (id) init" << endl;
+    scope_up(out);
+    out << indent() << "return [super initWithName: @\"" << cocoa_prefix_ << tstruct->get_name()
+        << "\" reason: @\"unknown\" userInfo: nil];" << endl;
+    scope_down(out);
+    out << endl;
+  } else {
+    // struct
+
+    // default initializer
+    // setup instance variables with default values
+    indent(out) << "- (id) init" << endl;
+    scope_up(out);
+    indent(out) << "self = [super init];" << endl;
+    if (members.size() > 0) {
+      out << "#if TARGET_OS_IPHONE || (MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5)"
+          << endl;
+      for (m_iter = members.begin(); m_iter != members.end(); ++m_iter) {
+        t_type* t = get_true_type((*m_iter)->get_type());
+        if ((*m_iter)->get_value() != NULL) {
+          print_const_value(out,
+                            "self." + (*m_iter)->get_name(),
+                            t,
+                            (*m_iter)->get_value(),
+                            false,
+                            true);
+        }
+      }
+      out << "#endif" << endl;
+    }
+    indent(out) << "return self;" << endl;
+    scope_down(out);
+    out << endl;
+  }
+
+  // initializer with all fields as params
+  if (!members.empty()) {
+    generate_cocoa_struct_initializer_signature(out, tstruct);
+    out << endl;
+    scope_up(out);
+    if (is_exception) {
+      out << indent() << "self = [self init];" << endl;
+    } else {
+      out << indent() << "self = [super init];" << endl;
+    }
+
+    for (m_iter = members.begin(); m_iter != members.end(); ++m_iter) {
+      t_type* t = get_true_type((*m_iter)->get_type());
+      out << indent() << "__" << (*m_iter)->get_name() << " = ";
+      if (type_can_be_null(t)) {
+        out << "[" << (*m_iter)->get_name() << " retain_stub];" << endl;
+      } else {
+        out << (*m_iter)->get_name() << ";" << endl;
+      }
+      out << indent() << "__" << (*m_iter)->get_name() << "_isset = YES;" << endl;
+    }
+
+    out << indent() << "return self;" << endl;
+    scope_down(out);
+    out << endl;
+  }
+
+  // initWithCoder for NSCoding
+  generate_cocoa_struct_init_with_coder_method(out, tstruct, is_exception);
+  // encodeWithCoder for NSCoding
+  generate_cocoa_struct_encode_with_coder_method(out, tstruct, is_exception);
+  // hash and isEqual for NSObject
+  generate_cocoa_struct_hash_method(out, tstruct);
+  generate_cocoa_struct_is_equal_method(out, tstruct);
+
+  // dealloc
+  if (!members.empty()) {
+    out << "- (void) dealloc" << endl;
+    scope_up(out);
+
+    for (m_iter = members.begin(); m_iter != members.end(); ++m_iter) {
+      t_type* t = get_true_type((*m_iter)->get_type());
+      if (type_can_be_null(t)) {
+        indent(out) << "[__" << (*m_iter)->get_name() << " release_stub];" << endl;
+      }
+    }
+
+    out << indent() << "[super dealloc_stub];" << endl;
+    scope_down(out);
+    out << endl;
+  }
+
+  // the rest of the methods
+  generate_cocoa_struct_field_accessor_implementations(out, tstruct, is_exception);
+  generate_cocoa_struct_reader(out, tstruct);
+  if (is_result) {
+    generate_cocoa_struct_result_writer(out, tstruct);
+  } else {
+    generate_cocoa_struct_writer(out, tstruct);
+  }
+  generate_cocoa_struct_validator(out, tstruct);
+  generate_cocoa_struct_description(out, tstruct);
+
+  out << "@end" << endl << endl;
+}
+
+/**
+ * Generates a function to read all the fields of the struct.
+ *
+ * @param tstruct The struct definition
+ */
+void t_cocoa_generator::generate_cocoa_struct_reader(ofstream& out, t_struct* tstruct) {
+  out << "- (void) read: (id <TProtocol>) inProtocol" << endl;
+  scope_up(out);
+
+  const vector<t_field*>& fields = tstruct->get_members();
+  vector<t_field*>::const_iterator f_iter;
+
+  // Declare stack tmp variables
+  indent(out) << "NSString * fieldName;" << endl;
+  indent(out) << "int fieldType;" << endl;
+  indent(out) << "int fieldID;" << endl;
+  out << endl;
+
+  indent(out) << "[inProtocol readStructBeginReturningName: NULL];" << endl;
+
+  // Loop over reading in fields
+  indent(out) << "while (true)" << endl;
+  scope_up(out);
+
+  // Read beginning field marker
+  indent(out)
+      << "[inProtocol readFieldBeginReturningName: &fieldName type: &fieldType fieldID: &fieldID];"
+      << endl;
+
+  // Check for field STOP marker and break
+  indent(out) << "if (fieldType == TType_STOP) { " << endl;
+  indent_up();
+  indent(out) << "break;" << endl;
+  indent_down();
+  indent(out) << "}" << endl;
+
+  // Switch statement on the field we are reading
+  indent(out) << "switch (fieldID)" << 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 (fieldType == " << type_to_enum((*f_iter)->get_type()) << ") {" << endl;
+    indent_up();
+
+    generate_deserialize_field(out, *f_iter, "fieldValue");
+    indent(out) << call_field_setter(*f_iter, "fieldValue") << endl;
+    // if this is an allocated field, release it since the struct
+    // is now retaining it
+    if (type_can_be_null((*f_iter)->get_type())) {
+      // deserialized strings are autorelease, so don't release them
+      if (!(get_true_type((*f_iter)->get_type())->is_string())) {
+        indent(out) << "[fieldValue release_stub];" << endl;
+      }
+    }
+
+    indent_down();
+    out << indent() << "} else { " << endl;
+    if (log_unexpected_) {
+      out << indent() << "  NSLog(@\"%s: field ID %i has unexpected type %i.  Skipping.\", "
+                         "__PRETTY_FUNCTION__, fieldID, fieldType);" << endl;
+    }
+    out << indent() << "  [TProtocolUtil skipType: fieldType onProtocol: inProtocol];" << endl
+        << indent() << "}" << endl << indent() << "break;" << endl;
+    indent_down();
+  }
+
+  // In the default case we skip the field
+  out << indent() << "default:" << endl;
+  if (log_unexpected_) {
+    out << indent() << "  NSLog(@\"%s: unexpected field ID %i with type %i.  Skipping.\", "
+                       "__PRETTY_FUNCTION__, fieldID, fieldType);" << endl;
+  }
+  out << indent() << "  [TProtocolUtil skipType: fieldType onProtocol: inProtocol];" << endl
+      << indent() << "  break;" << endl;
+
+  scope_down(out);
+
+  // Read field end marker
+  indent(out) << "[inProtocol readFieldEnd];" << endl;
+
+  scope_down(out);
+
+  out << indent() << "[inProtocol readStructEnd];" << endl;
+
+  // performs various checks (e.g. check that all required fields are set)
+  if (validate_required_) {
+    out << indent() << "[self validate];" << endl;
+  }
+
+  indent_down();
+  out << indent() << "}" << endl << endl;
+}
+
+/**
+ * Generates a function to write all the fields of the struct
+ *
+ * @param tstruct The struct definition
+ */
+void t_cocoa_generator::generate_cocoa_struct_writer(ofstream& out, t_struct* tstruct) {
+  out << indent() << "- (void) write: (id <TProtocol>) outProtocol {" << endl;
+  indent_up();
+
+  string name = tstruct->get_name();
+  const vector<t_field*>& fields = tstruct->get_members();
+  vector<t_field*>::const_iterator f_iter;
+
+  out << indent() << "[outProtocol writeStructBeginWithName: @\"" << name << "\"];" << endl;
+
+  for (f_iter = fields.begin(); f_iter != fields.end(); ++f_iter) {
+    out << indent() << "if (__" << (*f_iter)->get_name() << "_isset) {" << endl;
+    indent_up();
+    bool null_allowed = type_can_be_null((*f_iter)->get_type());
+    if (null_allowed) {
+      out << indent() << "if (__" << (*f_iter)->get_name() << " != nil) {" << endl;
+      indent_up();
+    }
+
+    indent(out) << "[outProtocol writeFieldBeginWithName: @\"" << (*f_iter)->get_name()
+                << "\" type: " << type_to_enum((*f_iter)->get_type())
+                << " fieldID: " << (*f_iter)->get_key() << "];" << endl;
+
+    // Write field contents
+    generate_serialize_field(out, *f_iter, "__" + (*f_iter)->get_name());
+
+    // Write field closer
+    indent(out) << "[outProtocol writeFieldEnd];" << endl;
+
+    if (null_allowed) {
+      scope_down(out);
+    }
+    scope_down(out);
+  }
+  // Write the struct map
+  out << indent() << "[outProtocol writeFieldStop];" << endl << indent()
+      << "[outProtocol writeStructEnd];" << endl;
+
+  indent_down();
+  out << indent() << "}" << endl << endl;
+}
+
+/**
+ * Generates a function to write all the fields of the struct, which
+ * is a function result. These fields are only written if they are
+ * set, and only one of them can be set at a time.
+ *
+ * @param tstruct The struct definition
+ */
+void t_cocoa_generator::generate_cocoa_struct_result_writer(ofstream& out, t_struct* tstruct) {
+  out << indent() << "- (void) write: (id <TProtocol>) outProtocol {" << endl;
+  indent_up();
+
+  string name = tstruct->get_name();
+  const vector<t_field*>& fields = tstruct->get_members();
+  vector<t_field*>::const_iterator f_iter;
+
+  out << indent() << "[outProtocol writeStructBeginWithName: @\"" << 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 << "(__" << (*f_iter)->get_name() << "_isset) {" << endl;
+    indent_up();
+
+    bool null_allowed = type_can_be_null((*f_iter)->get_type());
+    if (null_allowed) {
+      out << indent() << "if (__" << (*f_iter)->get_name() << " != nil) {" << endl;
+      indent_up();
+    }
+
+    indent(out) << "[outProtocol writeFieldBeginWithName: @\"" << (*f_iter)->get_name()
+                << "\" type: " << type_to_enum((*f_iter)->get_type())
+                << " fieldID: " << (*f_iter)->get_key() << "];" << endl;
+
+    // Write field contents
+    generate_serialize_field(out, *f_iter, "__" + (*f_iter)->get_name());
+
+    // Write field closer
+    indent(out) << "[outProtocol writeFieldEnd];" << endl;
+
+    if (null_allowed) {
+      indent_down();
+      indent(out) << "}" << endl;
+    }
+
+    indent_down();
+    indent(out) << "}";
+  }
+  // Write the struct map
+  out << endl << indent() << "[outProtocol writeFieldStop];" << endl << indent()
+      << "[outProtocol writeStructEnd];" << endl;
+
+  indent_down();
+  out << indent() << "}" << endl << endl;
+}
+
+/**
+ * Generates a function to perform various checks
+ * (e.g. check that all required fields are set)
+ *
+ * @param tstruct The struct definition
+ */
+void t_cocoa_generator::generate_cocoa_struct_validator(ofstream& out, t_struct* tstruct) {
+  out << indent() << "- (void) validate {" << endl;
+  indent_up();
+
+  const vector<t_field*>& fields = tstruct->get_members();
+  vector<t_field*>::const_iterator f_iter;
+
+  out << indent() << "// check for required fields" << endl;
+  for (f_iter = fields.begin(); f_iter != fields.end(); ++f_iter) {
+    t_field* field = (*f_iter);
+    if ((*f_iter)->get_req() == t_field::T_REQUIRED) {
+      out << indent() << "if (!__" << field->get_name() << "_isset) {" << endl << indent()
+          << "  @throw [TProtocolException exceptionWithName: @\"TProtocolException\"" << endl
+          << indent() << "                             reason: @\"Required field '"
+          << (*f_iter)->get_name() << "' is not set.\"];" << endl << indent() << "}" << endl;
+    }
+  }
+
+  indent_down();
+  out << indent() << "}" << endl << endl;
+}
+
+/**
+ * Generate property accessor methods for all fields in the struct.
+ * getter, setter, isset getter.
+ *
+ * @param tstruct The struct definition
+ */
+void t_cocoa_generator::generate_cocoa_struct_field_accessor_implementations(ofstream& out,
+                                                                             t_struct* tstruct,
+                                                                             bool is_exception) {
+  (void)is_exception;
+  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) {
+    t_field* field = *f_iter;
+    t_type* type = get_true_type(field->get_type());
+    std::string field_name = field->get_name();
+    std::string cap_name = field_name;
+    cap_name[0] = toupper(cap_name[0]);
+
+    // Simple getter
+    indent(out) << "- (" << type_name(type) << ") ";
+    out << field_name << " {" << endl;
+    indent_up();
+    if (!type_can_be_null(type)) {
+      indent(out) << "return __" << field_name << ";" << endl;
+    } else {
+      indent(out) << "return [[__" << field_name << " retain_stub] autorelease_stub];" << endl;
+    }
+    indent_down();
+    indent(out) << "}" << endl << endl;
+
+    // Simple setter
+    indent(out) << "- (void) set" << cap_name << ": (" << type_name(type) << ") " << field_name
+                << " {" << endl;
+    indent_up();
+    if (!type_can_be_null(type)) {
+      indent(out) << "__" << field_name << " = " << field_name << ";" << endl;
+    } else {
+      indent(out) << "[" << field_name << " retain_stub];" << endl;
+      indent(out) << "[__" << field_name << " release_stub];" << endl;
+      indent(out) << "__" << field_name << " = " << field_name << ";" << endl;
+    }
+    indent(out) << "__" << field_name << "_isset = YES;" << endl;
+    indent_down();
+    indent(out) << "}" << endl << endl;
+
+    // IsSet
+    indent(out) << "- (BOOL) " << field_name << "IsSet {" << endl;
+    indent_up();
+    indent(out) << "return __" << field_name << "_isset;" << endl;
+    indent_down();
+    indent(out) << "}" << endl << endl;
+
+    // Unsetter - do we need this?
+    indent(out) << "- (void) unset" << cap_name << " {" << endl;
+    indent_up();
+    if (type_can_be_null(type)) {
+      indent(out) << "[__" << field_name << " release_stub];" << endl;
+      indent(out) << "__" << field_name << " = nil;" << endl;
+    }
+    indent(out) << "__" << field_name << "_isset = NO;" << endl;
+    indent_down();
+    indent(out) << "}" << endl << endl;
+  }
+}
+
+/**
+ * Generates a description method for the given struct
+ *
+ * @param tstruct The struct definition
+ */
+void t_cocoa_generator::generate_cocoa_struct_description(ofstream& out, t_struct* tstruct) {
+  out << indent() << "- (NSString *) description {" << endl;
+  indent_up();
+
+  out << indent() << "NSMutableString * ms = [NSMutableString stringWithString: @\""
+      << cocoa_prefix_ << tstruct->get_name() << "(\"];" << endl;
+
+  const vector<t_field*>& fields = tstruct->get_members();
+  vector<t_field*>::const_iterator f_iter;
+  bool first = true;
+  for (f_iter = fields.begin(); f_iter != fields.end(); ++f_iter) {
+    if (first) {
+      first = false;
+      indent(out) << "[ms appendString: @\"" << (*f_iter)->get_name() << ":\"];" << endl;
+    } else {
+      indent(out) << "[ms appendString: @\"," << (*f_iter)->get_name() << ":\"];" << endl;
+    }
+    t_type* ttype = (*f_iter)->get_type();
+    indent(out) << "[ms appendFormat: @\"" << format_string_for_type(ttype) << "\", __"
+                << (*f_iter)->get_name() << "];" << endl;
+  }
+  out << indent() << "[ms appendString: @\")\"];" << endl << indent()
+      << "return [NSString stringWithString: ms];" << endl;
+
+  indent_down();
+  indent(out) << "}" << endl << endl;
+}
+
+/**
+ * Generates a thrift service.  In Objective-C this consists of a
+ * protocol definition, a client interface and a client implementation.
+ *
+ * @param tservice The service definition
+ */
+void t_cocoa_generator::generate_service(t_service* tservice) {
+  generate_cocoa_service_protocol(f_header_, tservice);
+  generate_cocoa_service_client_interface(f_header_, tservice);
+  generate_cocoa_service_server_interface(f_header_, tservice);
+  generate_cocoa_service_helpers(tservice);
+  generate_cocoa_service_client_implementation(f_impl_, tservice);
+  generate_cocoa_service_server_implementation(f_impl_, tservice);
+  if (async_clients_) {
+    generate_cocoa_service_async_protocol(f_header_, tservice);
+    generate_cocoa_service_client_async_interface(f_header_, tservice);
+    generate_cocoa_service_client_async_implementation(f_impl_, tservice);
+  }
+}
+
+/**
+ * Generates structs for all the service return types
+ *
+ * @param tservice The service
+ */
+void t_cocoa_generator::generate_cocoa_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();
+    generate_cocoa_struct_interface(f_impl_, ts, false);
+    generate_cocoa_struct_implementation(f_impl_, ts, false, false);
+    generate_function_helpers(*f_iter);
+  }
+}
+
+string t_cocoa_generator::function_result_helper_struct_type(t_function* tfunction) {
+  if (tfunction->is_oneway()) {
+    return capitalize(tfunction->get_name());
+  } else {
+    return capitalize(tfunction->get_name()) + "_result";
+  }
+}
+
+string t_cocoa_generator::function_args_helper_struct_type(t_function* tfunction) {
+  return tfunction->get_name() + "_args";
+}
+
+/**
+ * Generates a struct and helpers for a function.
+ *
+ * @param tfunction The function
+ */
+void t_cocoa_generator::generate_function_helpers(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(tfunction));
+  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 the result struct
+  generate_cocoa_struct_interface(f_impl_, &result, false);
+  generate_cocoa_struct_implementation(f_impl_, &result, false, true);
+}
+
+/**
+ * Generates a service protocol definition.
+ *
+ * @param tservice The service to generate a protocol definition for
+ */
+void t_cocoa_generator::generate_cocoa_service_protocol(ofstream& out, t_service* tservice) {
+  out << "@protocol " << cocoa_prefix_ << tservice->get_name() << " <NSObject>" << 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) {
+    out << "- " << function_signature(*f_iter) << ";"
+        << "  // throws ";
+    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 << type_name((*x_iter)->get_type()) + ", ";
+    }
+    out << "TException" << endl;
+  }
+  out << "@end" << endl << endl;
+}
+
+/**
+ * Generates an asynchronous service protocol definition.
+ *
+ * @param tservice The service to generate a protocol definition for
+ */
+void t_cocoa_generator::generate_cocoa_service_async_protocol(ofstream& out, t_service* tservice) {
+  out << "@protocol " << cocoa_prefix_ << tservice->get_name() << "Async"
+      << " <NSObject>" << 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) {
+    out << "- " << async_function_signature(*f_iter) << ";" << endl;
+  }
+  out << "@end" << endl << endl;
+}
+
+/**
+ * Generates a service client interface definition.
+ *
+ * @param tservice The service to generate a client interface definition for
+ */
+void t_cocoa_generator::generate_cocoa_service_client_interface(ofstream& out,
+                                                                t_service* tservice) {
+  out << "@interface " << cocoa_prefix_ << tservice->get_name() << "Client : TBaseClient <"
+      << cocoa_prefix_ << tservice->get_name() << "> ";
+
+  out << "- (id) initWithProtocol: (id <TProtocol>) protocol;" << endl;
+  out << "- (id) initWithInProtocol: (id <TProtocol>) inProtocol outProtocol: (id <TProtocol>) "
+         "outProtocol;" << endl;
+  out << "@end" << endl << endl;
+}
+
+/**
+ * Generates a service client interface definition.
+ *
+ * @param tservice The service to generate a client interface definition for
+ */
+void t_cocoa_generator::generate_cocoa_service_client_async_interface(ofstream& out,
+                                                                      t_service* tservice) {
+  out << "@interface " << cocoa_prefix_ << tservice->get_name() << "ClientAsync : TBaseClient <"
+      << cocoa_prefix_ << tservice->get_name() << "Async> ";
+
+  scope_up(out);
+  out << indent() << "id <TAsyncTransport> asyncTransport;" << endl;
+  scope_down(out);
+
+  out << "- (id) initWithProtocolFactory: (id <TProtocolFactory>) factory "
+         "transport: (id <TAsyncTransport>) transport;" << endl;
+  out << "@end" << endl << 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_cocoa_generator::generate_cocoa_service_server_interface(ofstream& out,
+                                                                t_service* tservice) {
+  out << "@interface " << cocoa_prefix_ << tservice->get_name()
+      << "Processor : NSObject <TProcessor> ";
+
+  scope_up(out);
+  out << indent() << "id <" << cocoa_prefix_ << tservice->get_name() << "> mService;" << endl;
+  out << indent() << "NSDictionary * mMethodMap;" << endl;
+  scope_down(out);
+
+  out << "- (id) initWith" << tservice->get_name() << ": (id <" << cocoa_prefix_
+      << tservice->get_name() << ">) service;" << endl;
+  out << "- (id<" << cocoa_prefix_ << tservice->get_name() << ">) service;" << endl;
+
+  out << "@end" << endl << endl;
+}
+
+void t_cocoa_generator::generate_cocoa_service_client_send_function_implementation(
+    ofstream& out,
+    t_function* tfunction) {
+  string funname = tfunction->get_name();
+
+  t_function send_function(g_type_void,
+                           string("send_") + tfunction->get_name(),
+                           tfunction->get_arglist());
+
+  string argsname = tfunction->get_name() + "_args";
+
+  // Open function
+  indent(out) << "- " << function_signature(&send_function) << endl;
+  scope_up(out);
+
+  // Serialize the request
+  out << indent() << "[outProtocol writeMessageBeginWithName: @\"" << funname << "\""
+      << (tfunction->is_oneway() ? " type: TMessageType_ONEWAY" : " type: TMessageType_CALL")
+      << " sequenceID: 0];" << endl;
+
+  out << indent() << "[outProtocol writeStructBeginWithName: @\"" << argsname << "\"];" << endl;
+
+  // write out function parameters
+  t_struct* arg_struct = tfunction->get_arglist();
+  const vector<t_field*>& fields = arg_struct->get_members();
+  vector<t_field*>::const_iterator fld_iter;
+  for (fld_iter = fields.begin(); fld_iter != fields.end(); ++fld_iter) {
+    string fieldName = (*fld_iter)->get_name();
+    if (type_can_be_null((*fld_iter)->get_type())) {
+      out << indent() << "if (" << fieldName << " != nil)";
+      scope_up(out);
+    }
+    out << indent() << "[outProtocol writeFieldBeginWithName: @\"" << fieldName
+        << "\""
+           " type: " << type_to_enum((*fld_iter)->get_type())
+        << " fieldID: " << (*fld_iter)->get_key() << "];" << endl;
+
+    generate_serialize_field(out, *fld_iter, fieldName);
+
+    out << indent() << "[outProtocol writeFieldEnd];" << endl;
+
+    if (type_can_be_null((*fld_iter)->get_type())) {
+      indent_down();
+      out << indent() << "}" << endl;
+    }
+  }
+
+  out << indent() << "[outProtocol writeFieldStop];" << endl;
+  out << indent() << "[outProtocol writeStructEnd];" << endl;
+  out << indent() << "[outProtocol writeMessageEnd];" << endl;
+  scope_down(out);
+  out << endl;
+}
+
+void t_cocoa_generator::generate_cocoa_service_client_recv_function_implementation(
+    ofstream& out,
+    t_function* tfunction) {
+  t_struct noargs(program_);
+  t_function recv_function(tfunction->get_returntype(),
+                           string("recv_") + tfunction->get_name(),
+                           &noargs,
+                           tfunction->get_xceptions());
+  // Open function
+  indent(out) << "- " << function_signature(&recv_function) << endl;
+  scope_up(out);
+
+  // TODO(mcslee): Message validation here, was the seqid etc ok?
+
+  // check for an exception
+  out << indent() << "TApplicationException * x = [self checkIncomingMessageException];" << endl
+      << indent() << "if (x != nil)";
+  scope_up(out);
+  out << indent() << "@throw x;" << endl;
+  scope_down(out);
+
+  // FIXME - could optimize here to reduce creation of temporary objects.
+  string resultname = function_result_helper_struct_type(tfunction);
+  out << indent() << cocoa_prefix_ << resultname << " * result = [[[" << cocoa_prefix_ << resultname
+      << " alloc] init] autorelease_stub];" << endl;
+  indent(out) << "[result read: inProtocol];" << endl;
+  indent(out) << "[inProtocol readMessageEnd];" << endl;
+
+  // Careful, only return _result if not a void function
+  if (!tfunction->get_returntype()->is_void()) {
+    out << indent() << "if ([result successIsSet]) {" << endl << indent()
+        << "  return [result success];" << endl << indent() << "}" << endl;
+  }
+
+  t_struct* xs = tfunction->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 " << (*x_iter)->get_name() << "IsSet]) {" << endl << indent()
+        << "  @throw [result " << (*x_iter)->get_name() << "];" << endl << indent() << "}" << endl;
+  }
+
+  // If you get here it's an exception, unless a void function
+  if (tfunction->get_returntype()->is_void()) {
+    indent(out) << "return;" << endl;
+  } else {
+    out << indent() << "@throw [TApplicationException exceptionWithType: "
+                       "TApplicationException_MISSING_RESULT" << endl << indent()
+        << "                                         reason: @\"" << tfunction->get_name()
+        << " failed: unknown result\"];" << endl;
+  }
+
+  // Close function
+  scope_down(out);
+  out << endl;
+}
+
+/**
+ * Generates an invocation of a given 'send_' function.
+ *
+ * @param tfunction The service to generate an implementation for
+ */
+void t_cocoa_generator::generate_cocoa_service_client_send_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 fld_iter;
+  indent(out) << "[self send_" << tfunction->get_name();
+  bool first = true;
+  for (fld_iter = fields.begin(); fld_iter != fields.end(); ++fld_iter) {
+    string fieldName = (*fld_iter)->get_name();
+    out << " ";
+    if (first) {
+      first = false;
+      out << ": " << fieldName;
+    } else {
+      out << fieldName << ": " << fieldName;
+    }
+  }
+  out << "];" << endl;
+}
+
+/**
+ * Generates a service client implementation.
+ *
+ * @param tservice The service to generate an implementation for
+ */
+void t_cocoa_generator::generate_cocoa_service_client_implementation(ofstream& out,
+                                                                     t_service* tservice) {
+  out << "@implementation " << cocoa_prefix_ << tservice->get_name() << "Client" << endl;
+
+  // initializers
+  out << "- (id) initWithProtocol: (id <TProtocol>) protocol" << endl;
+  scope_up(out);
+  out << indent() << "return [self initWithInProtocol: protocol outProtocol: protocol];" << endl;
+  scope_down(out);
+  out << endl;
+
+  out << "- (id) initWithInProtocol: (id <TProtocol>) anInProtocol outProtocol: (id <TProtocol>) "
+         "anOutProtocol" << endl;
+  scope_up(out);
+  out << indent() << "self = [super init];" << endl;
+  out << indent() << "inProtocol = [anInProtocol retain_stub];" << endl;
+  out << indent() << "outProtocol = [anOutProtocol retain_stub];" << endl;
+  out << indent() << "return self;" << endl;
+  scope_down(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_cocoa_service_client_send_function_implementation(out, *f_iter);
+
+    if (!(*f_iter)->is_oneway()) {
+      generate_cocoa_service_client_recv_function_implementation(out, *f_iter);
+    }
+
+    // Open function
+    indent(out) << "- " << function_signature(*f_iter) << endl;
+    scope_up(out);
+    generate_cocoa_service_client_send_function_invocation(out, *f_iter);
+
+    out << indent() << "[[outProtocol transport] flush];" << endl;
+    if (!(*f_iter)->is_oneway()) {
+      out << indent();
+      if (!(*f_iter)->get_returntype()->is_void()) {
+        out << "return ";
+      }
+      out << "[self recv_" << (*f_iter)->get_name() << "];" << endl;
+    }
+    scope_down(out);
+    out << endl;
+  }
+  indent_down();
+  out << "@end" << endl << endl;
+}
+
+/**
+ * Generates a service client implementation for its asynchronous interface.
+ *
+ * @param tservice The service to generate an implementation for
+ */
+void t_cocoa_generator::generate_cocoa_service_client_async_implementation(ofstream& out,
+                                                                           t_service* tservice) {
+  out << "@implementation " << cocoa_prefix_ << tservice->get_name() << "ClientAsync" << endl
+      << endl << "- (id) initWithProtocolFactory: (id <TProtocolFactory>) factory "
+                 "transport: (id <TAsyncTransport>) transport;" << endl;
+
+  scope_up(out);
+  out << indent() << "self = [super init];" << endl;
+  out << indent() << "inProtocol = [[factory newProtocolOnTransport:transport] retain_stub];"
+      << endl;
+  out << indent() << "outProtocol = inProtocol;" << endl;
+  out << indent() << "asyncTransport = transport;" << endl;
+  out << indent() << "return self;" << endl;
+  scope_down(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_cocoa_service_client_send_function_implementation(out, *f_iter);
+
+    if (!(*f_iter)->is_oneway()) {
+      generate_cocoa_service_client_recv_function_implementation(out, *f_iter);
+    }
+
+    // Open function
+    indent(out) << "- " << async_function_signature(*f_iter) << endl;
+    scope_up(out);
+    indent(out) << "@try {" << endl;
+    indent_up();
+    generate_cocoa_service_client_send_function_invocation(out, *f_iter);
+    indent_down();
+    out << indent() << "} @catch(TException * texception) {" << endl;
+    indent_up();
+    out << indent() << "failureBlock(texception);" << endl << indent() << "return;" << endl;
+    indent_down();
+    indent(out) << "}" << endl;
+
+    out << indent() << "[asyncTransport flush:^{" << endl;
+    indent_up();
+
+    out << indent() << "@try {" << endl;
+    indent_up();
+
+    string recv_invocation = "[self recv_" + (*f_iter)->get_name() + "]";
+    if (!(*f_iter)->is_oneway() && (*f_iter)->get_returntype()->is_void()) {
+      out << indent() << recv_invocation << ";" << endl;
+    }
+    out << indent() << "responseBlock(";
+    if (!(*f_iter)->is_oneway() && !(*f_iter)->get_returntype()->is_void()) {
+      out << recv_invocation;
+    }
+    out << ");" << endl;
+
+    indent_down();
+
+    out << indent() << "} @catch(TException * texception) {" << endl;
+    indent_up();
+
+    out << indent() << "failureBlock(texception);" << endl;
+
+    indent_down();
+    out << indent() << "}" << endl;
+
+    indent_down();
+    out << indent() << "} failure:failureBlock];" << endl;
+
+    scope_down(out);
+
+    out << endl;
+  }
+
+  out << "@end" << endl << endl;
+}
+
+/**
+ * Generates a service server implementation.  In other words the actual TProcessor implementation
+ * for the service.
+ *
+ * @param tservice The service to generate an implementation for
+ */
+void t_cocoa_generator::generate_cocoa_service_server_implementation(ofstream& out,
+                                                                     t_service* tservice) {
+  out << "@implementation " << cocoa_prefix_ << tservice->get_name() << "Processor" << endl;
+
+  // initializer
+  out << endl;
+  out << "- (id) initWith" << tservice->get_name() << ": (id <" << cocoa_prefix_
+      << tservice->get_name() << ">) service" << endl;
+  scope_up(out);
+  out << indent() << "self = [super init];" << endl;
+  out << indent() << "if (!self) {" << endl;
+  out << indent() << "  return nil;" << endl;
+  out << indent() << "}" << endl;
+  out << indent() << "mService = [service retain_stub];" << endl;
+  out << indent() << "mMethodMap = [[NSMutableDictionary dictionary] retain_stub];" << 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) {
+    string funname = (*f_iter)->get_name();
+    scope_up(out);
+    out << indent() << "SEL s = @selector(process_" << funname
+        << "_withSequenceID:inProtocol:outProtocol:);" << endl;
+    out << indent() << "NSMethodSignature * sig = [self methodSignatureForSelector: s];" << endl;
+    out << indent()
+        << "NSInvocation * invocation = [NSInvocation invocationWithMethodSignature: sig];" << endl;
+    out << indent() << "[invocation setSelector: s];" << endl;
+    out << indent() << "[invocation retainArguments];" << endl;
+    out << indent() << "[mMethodMap setValue: invocation forKey: @\"" << funname << "\"];" << endl;
+    scope_down(out);
+  }
+  out << indent() << "return self;" << endl;
+  scope_down(out);
+
+  // implementation of the 'service' method which returns the service associated with this
+  // processor
+  out << endl;
+  out << indent() << "- (id<" << cocoa_prefix_ << tservice->get_name() << ">) service" << endl;
+  out << indent() << "{" << endl;
+  out << indent() << "  return [[mService retain_stub] autorelease_stub];" << endl;
+  out << indent() << "}" << endl;
+
+  // implementation of the TProcess method, which dispatches the incoming call using the method map
+  out << endl;
+  out << indent() << "- (BOOL) processOnInputProtocol: (id <TProtocol>) inProtocol" << endl;
+  out << indent() << "                 outputProtocol: (id <TProtocol>) outProtocol" << endl;
+  out << indent() << "{" << endl;
+  out << indent() << "  NSString * messageName;" << endl;
+  out << indent() << "  int messageType;" << endl;
+  out << indent() << "  int seqID;" << endl;
+  out << indent() << "  [inProtocol readMessageBeginReturningName: &messageName" << endl;
+  out << indent() << "                                       type: &messageType" << endl;
+  out << indent() << "                                 sequenceID: &seqID];" << endl;
+  out << indent() << "  NSInvocation * invocation = [mMethodMap valueForKey: messageName];" << endl;
+  out << indent() << "  if (invocation == nil) {" << endl;
+  out << indent() << "    [TProtocolUtil skipType: TType_STRUCT onProtocol: inProtocol];" << endl;
+  out << indent() << "    [inProtocol readMessageEnd];" << endl;
+  out << indent() << "    TApplicationException * x = [TApplicationException exceptionWithType: "
+                     "TApplicationException_UNKNOWN_METHOD reason: [NSString stringWithFormat: "
+                     "@\"Invalid method name: '%@'\", messageName]];" << endl;
+  out << indent() << "    [outProtocol writeMessageBeginWithName: messageName" << endl;
+  out << indent() << "                                      type: TMessageType_EXCEPTION" << endl;
+  out << indent() << "                                sequenceID: seqID];" << endl;
+  out << indent() << "    [x write: outProtocol];" << endl;
+  out << indent() << "    [outProtocol writeMessageEnd];" << endl;
+  out << indent() << "    [[outProtocol transport] flush];" << endl;
+  out << indent() << "    return YES;" << endl;
+  out << indent() << "  }" << endl;
+  out << indent() << "  // NSInvocation does not conform to NSCopying protocol" << endl;
+  out << indent() << "  NSInvocation * i = [NSInvocation invocationWithMethodSignature: "
+                     "[invocation methodSignature]];" << endl;
+  out << indent() << "  [i setSelector: [invocation selector]];" << endl;
+  out << indent() << "  [i setArgument: &seqID atIndex: 2];" << endl;
+  out << indent() << "  [i setArgument: &inProtocol atIndex: 3];" << endl;
+  out << indent() << "  [i setArgument: &outProtocol atIndex: 4];" << endl;
+  out << indent() << "  [i setTarget: self];" << endl;
+  out << indent() << "  [i invoke];" << endl;
+  out << indent() << "  return YES;" << endl;
+  out << indent() << "}" << endl;
+
+  // generate a process_XXXX method for each service function, which reads args, calls the service,
+  // and writes results
+  functions = tservice->get_functions();
+  for (f_iter = functions.begin(); f_iter != functions.end(); ++f_iter) {
+    out << endl;
+    string funname = (*f_iter)->get_name();
+    out << indent() << "- (void) process_" << funname
+        << "_withSequenceID: (int32_t) seqID inProtocol: (id<TProtocol>) inProtocol outProtocol: "
+           "(id<TProtocol>) outProtocol" << endl;
+    scope_up(out);
+    string argstype = cocoa_prefix_ + function_args_helper_struct_type(*f_iter);
+    out << indent() << argstype << " * args = [[" << argstype << " alloc] init];" << endl;
+    out << indent() << "[args read: inProtocol];" << endl;
+    out << indent() << "[inProtocol readMessageEnd];" << endl;
+
+    // prepare the result if not oneway
+    if (!(*f_iter)->is_oneway()) {
+      string resulttype = cocoa_prefix_ + function_result_helper_struct_type(*f_iter);
+      out << indent() << resulttype << " * result = [[" << resulttype << " alloc] init];" << endl;
+    }
+
+    // make the call to the actual service object
+    out << indent();
+    if (!(*f_iter)->get_returntype()->is_void()) {
+      out << "[result setSuccess: ";
+    }
+    out << "[mService " << funname;
+    // supplying arguments
+    t_struct* arg_struct = (*f_iter)->get_arglist();
+    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) {
+      string fieldName = (*fld_iter)->get_name();
+      if (first) {
+        first = false;
+        out << ": [args " << fieldName << "]";
+      } else {
+        out << " " << fieldName << ": [args " << fieldName << "]";
+      }
+    }
+    out << "]";
+    if (!(*f_iter)->get_returntype()->is_void()) {
+      out << "]";
+    }
+    out << ";" << endl;
+
+    // write out the result if not oneway
+    if (!(*f_iter)->is_oneway()) {
+      out << indent() << "[outProtocol writeMessageBeginWithName: @\"" << funname << "\"" << endl;
+      out << indent() << "                                  type: TMessageType_REPLY" << endl;
+      out << indent() << "                            sequenceID: seqID];" << endl;
+      out << indent() << "[result write: outProtocol];" << endl;
+      out << indent() << "[outProtocol writeMessageEnd];" << endl;
+      out << indent() << "[[outProtocol transport] flush];" << endl;
+      out << indent() << "[result release_stub];" << endl;
+    }
+    out << indent() << "[args release_stub];" << endl;
+
+    scope_down(out);
+  }
+
+  // dealloc
+  out << endl;
+  out << "- (void) dealloc" << endl;
+  scope_up(out);
+  out << indent() << "[mService release_stub];" << endl;
+  out << indent() << "[mMethodMap release_stub];" << endl;
+  out << indent() << "[super dealloc_stub];" << endl;
+  scope_down(out);
+  out << endl;
+
+  out << "@end" << endl << endl;
+}
+
+/**
+ * Deserializes a field of any type.
+ *
+ * @param tfield The field
+ * @param fieldName The variable name for this field
+ */
+void t_cocoa_generator::generate_deserialize_field(ofstream& out,
+                                                   t_field* tfield,
+                                                   string fieldName) {
+  t_type* type = get_true_type(tfield->get_type());
+
+  if (type->is_void()) {
+    throw "CANNOT GENERATE DESERIALIZE CODE FOR void TYPE: " + tfield->get_name();
+  }
+
+  if (type->is_struct() || type->is_xception()) {
+    generate_deserialize_struct(out, (t_struct*)type, fieldName);
+  } else if (type->is_container()) {
+    generate_deserialize_container(out, type, fieldName);
+  } else if (type->is_base_type() || type->is_enum()) {
+    indent(out) << type_name(type) << " " << fieldName << " = [inProtocol ";
+
+    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: " + tfield->get_name();
+        break;
+      case t_base_type::TYPE_STRING:
+        if (((t_base_type*)type)->is_binary()) {
+          out << "readBinary];";
+        } else {
+          out << "readString];";
+        }
+        break;
+      case t_base_type::TYPE_BOOL:
+        out << "readBool];";
+        break;
+      case t_base_type::TYPE_BYTE:
+        out << "readByte];";
+        break;
+      case t_base_type::TYPE_I16:
+        out << "readI16];";
+        break;
+      case t_base_type::TYPE_I32:
+        out << "readI32];";
+        break;
+      case t_base_type::TYPE_I64:
+        out << "readI64];";
+        break;
+      case t_base_type::TYPE_DOUBLE:
+        out << "readDouble];";
+        break;
+      default:
+        throw "compiler error: no Objective-C name for base type "
+            + t_base_type::t_base_name(tbase);
+      }
+    } else if (type->is_enum()) {
+      out << "readI32];";
+    }
+    out << 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 struct, allocates the struct and invokes read:
+ */
+void t_cocoa_generator::generate_deserialize_struct(ofstream& out,
+                                                    t_struct* tstruct,
+                                                    string fieldName) {
+  indent(out) << type_name(tstruct) << fieldName << " = [[" << type_name(tstruct, true)
+              << " alloc] init];" << endl;
+  indent(out) << "[" << fieldName << " read: inProtocol];" << endl;
+}
+
+/**
+ * Deserializes a container by reading its size and then iterating
+ */
+void t_cocoa_generator::generate_deserialize_container(ofstream& out,
+                                                       t_type* ttype,
+                                                       string fieldName) {
+  string size = tmp("_size");
+  indent(out) << "int " << size << ";" << endl;
+
+  // Declare variables, read header
+  if (ttype->is_map()) {
+    indent(out) << "[inProtocol readMapBeginReturningKeyType: NULL valueType: NULL size: &" << size
+                << "];" << endl;
+    indent(out) << "NSMutableDictionary * " << fieldName
+                << " = [[NSMutableDictionary alloc] initWithCapacity: " << size << "];" << endl;
+  } else if (ttype->is_set()) {
+    indent(out) << "[inProtocol readSetBeginReturningElementType: NULL size: &" << size << "];"
+                << endl;
+    indent(out) << "NSMutableSet * " << fieldName
+                << " = [[NSMutableSet alloc] initWithCapacity: " << size << "];" << endl;
+  } else if (ttype->is_list()) {
+    indent(out) << "[inProtocol readListBeginReturningElementType: NULL size: &" << size << "];"
+                << endl;
+    indent(out) << "NSMutableArray * " << fieldName
+                << " = [[NSMutableArray alloc] initWithCapacity: " << size << "];" << endl;
+  }
+  // FIXME - the code above does not verify that the element types of
+  // the containers being read match the element types of the
+  // containers we are reading into.  Does that matter?
+
+  // For loop iterates over elements
+  string i = tmp("_i");
+  indent(out) << "int " << 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, fieldName);
+  } else if (ttype->is_set()) {
+    generate_deserialize_set_element(out, (t_set*)ttype, fieldName);
+  } else if (ttype->is_list()) {
+    generate_deserialize_list_element(out, (t_list*)ttype, fieldName);
+  }
+
+  scope_down(out);
+
+  // Read container end
+  if (ttype->is_map()) {
+    indent(out) << "[inProtocol readMapEnd];" << endl;
+  } else if (ttype->is_set()) {
+    indent(out) << "[inProtocol readSetEnd];" << endl;
+  } else if (ttype->is_list()) {
+    indent(out) << "[inProtocol readListEnd];" << endl;
+  }
+}
+
+/**
+ * Take a variable of a given type and wrap it in code to make it
+ * suitable for putting into a container, if necessary.  Basically,
+ * wrap scaler primitives in NSNumber objects.
+ */
+string t_cocoa_generator::containerize(t_type* ttype, string fieldName) {
+  // FIXME - optimize here to avoid autorelease pool?
+  ttype = get_true_type(ttype);
+  if (ttype->is_enum()) {
+    return "[NSNumber numberWithInt: " + fieldName + "]";
+  } else if (ttype->is_base_type()) {
+    t_base_type::t_base tbase = ((t_base_type*)ttype)->get_base();
+    switch (tbase) {
+    case t_base_type::TYPE_VOID:
+      throw "can't containerize void";
+    case t_base_type::TYPE_BOOL:
+      return "[NSNumber numberWithBool: " + fieldName + "]";
+    case t_base_type::TYPE_BYTE:
+      return "[NSNumber numberWithUnsignedChar: " + fieldName + "]";
+    case t_base_type::TYPE_I16:
+      return "[NSNumber numberWithShort: " + fieldName + "]";
+    case t_base_type::TYPE_I32:
+      return "[NSNumber numberWithLong: " + fieldName + "]";
+    case t_base_type::TYPE_I64:
+      return "[NSNumber numberWithLongLong: " + fieldName + "]";
+    case t_base_type::TYPE_DOUBLE:
+      return "[NSNumber numberWithDouble: " + fieldName + "]";
+    default:
+      break;
+    }
+  }
+
+  // do nothing
+  return fieldName;
+}
+
+/**
+ * Generates code to deserialize a map element
+ */
+void t_cocoa_generator::generate_deserialize_map_element(ofstream& out,
+                                                         t_map* tmap,
+                                                         string fieldName) {
+  string key = tmp("_key");
+  string val = tmp("_val");
+  t_type* keyType = tmap->get_key_type();
+  t_type* valType = tmap->get_val_type();
+  t_field fkey(keyType, key);
+  t_field fval(valType, val);
+
+  generate_deserialize_field(out, &fkey, key);
+  generate_deserialize_field(out, &fval, val);
+
+  indent(out) << "[" << fieldName << " setObject: " << containerize(valType, val)
+              << " forKey: " << containerize(keyType, key) << "];" << endl;
+
+  if (type_can_be_null(keyType)) {
+    if (!(get_true_type(keyType)->is_string())) {
+      indent(out) << "[" << containerize(keyType, key) << " release_stub];" << endl;
+    }
+  }
+
+  if (type_can_be_null(valType)) {
+    if (!(get_true_type(valType)->is_string())) {
+      indent(out) << "[" << containerize(valType, val) << " release_stub];" << endl;
+    }
+  }
+}
+
+/**
+ * Deserializes a set element
+ */
+void t_cocoa_generator::generate_deserialize_set_element(ofstream& out,
+                                                         t_set* tset,
+                                                         string fieldName) {
+  string elem = tmp("_elem");
+  t_type* type = tset->get_elem_type();
+  t_field felem(type, elem);
+
+  generate_deserialize_field(out, &felem, elem);
+
+  indent(out) << "[" << fieldName << " addObject: " << containerize(type, elem) << "];" << endl;
+
+  if (type_can_be_null(type)) {
+    // deserialized strings are autorelease, so don't release them
+    if (!(get_true_type(type)->is_string())) {
+      indent(out) << "[" << containerize(type, elem) << " release_stub];" << endl;
+    }
+  }
+}
+
+/**
+ * Deserializes a list element
+ */
+void t_cocoa_generator::generate_deserialize_list_element(ofstream& out,
+                                                          t_list* tlist,
+                                                          string fieldName) {
+  string elem = tmp("_elem");
+  t_type* type = tlist->get_elem_type();
+  t_field felem(type, elem);
+
+  generate_deserialize_field(out, &felem, elem);
+
+  indent(out) << "[" << fieldName << " addObject: " << containerize(type, elem) << "];" << endl;
+
+  if (type_can_be_null(type)) {
+    if (!(get_true_type(type)->is_string())) {
+      indent(out) << "[" << containerize(type, elem) << " release_stub];" << endl;
+    }
+  }
+}
+
+/**
+ * Serializes a field of any type.
+ *
+ * @param tfield The field to serialize
+ * @param fieldName Name to of the variable holding the field
+ */
+void t_cocoa_generator::generate_serialize_field(ofstream& out, t_field* tfield, string fieldName) {
+  t_type* type = get_true_type(tfield->get_type());
+
+  // Do nothing for void types
+  if (type->is_void()) {
+    throw "CANNOT GENERATE SERIALIZE CODE FOR void TYPE: " + tfield->get_name();
+  }
+
+  if (type->is_struct() || type->is_xception()) {
+    generate_serialize_struct(out, (t_struct*)type, fieldName);
+  } else if (type->is_container()) {
+    generate_serialize_container(out, type, fieldName);
+  } else if (type->is_base_type() || type->is_enum()) {
+    indent(out) << "[outProtocol ";
+
+    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: " + fieldName;
+        break;
+      case t_base_type::TYPE_STRING:
+        if (((t_base_type*)type)->is_binary()) {
+          out << "writeBinary: " << fieldName << "];";
+        } else {
+          out << "writeString: " << fieldName << "];";
+        }
+        break;
+      case t_base_type::TYPE_BOOL:
+        out << "writeBool: " << fieldName << "];";
+        break;
+      case t_base_type::TYPE_BYTE:
+        out << "writeByte: " << fieldName << "];";
+        break;
+      case t_base_type::TYPE_I16:
+        out << "writeI16: " << fieldName << "];";
+        break;
+      case t_base_type::TYPE_I32:
+        out << "writeI32: " << fieldName << "];";
+        break;
+      case t_base_type::TYPE_I64:
+        out << "writeI64: " << fieldName << "];";
+        break;
+      case t_base_type::TYPE_DOUBLE:
+        out << "writeDouble: " << fieldName << "];";
+        break;
+      default:
+        throw "compiler error: no Objective-C name for base type "
+            + t_base_type::t_base_name(tbase);
+      }
+    } else if (type->is_enum()) {
+      out << "writeI32: " << fieldName << "];";
+    }
+    out << endl;
+  } else {
+    printf("DO NOT KNOW HOW TO SERIALIZE FIELD '%s' TYPE '%s'\n",
+           tfield->get_name().c_str(),
+           type_name(type).c_str());
+  }
+}
+
+/**
+ * Serialize a struct.
+ *
+ * @param tstruct The struct to serialize
+ * @param fieldName Name of variable holding struct
+ */
+void t_cocoa_generator::generate_serialize_struct(ofstream& out,
+                                                  t_struct* tstruct,
+                                                  string fieldName) {
+  (void)tstruct;
+  out << indent() << "[" << fieldName << " write: outProtocol];" << endl;
+}
+
+/**
+ * Serializes a container by writing its size then the elements.
+ *
+ * @param ttype  The type of container
+ * @param fieldName Name of variable holding container
+ */
+void t_cocoa_generator::generate_serialize_container(ofstream& out,
+                                                     t_type* ttype,
+                                                     string fieldName) {
+  scope_up(out);
+
+  if (ttype->is_map()) {
+    indent(out) << "[outProtocol writeMapBeginWithKeyType: "
+                << type_to_enum(((t_map*)ttype)->get_key_type())
+                << " valueType: " << type_to_enum(((t_map*)ttype)->get_val_type()) << " size: ["
+                << fieldName << " count]];" << endl;
+  } else if (ttype->is_set()) {
+    indent(out) << "[outProtocol writeSetBeginWithElementType: "
+                << type_to_enum(((t_set*)ttype)->get_elem_type()) << " size: [" << fieldName
+                << " count]];" << endl;
+  } else if (ttype->is_list()) {
+    indent(out) << "[outProtocol writeListBeginWithElementType: "
+                << type_to_enum(((t_list*)ttype)->get_elem_type()) << " size: [" << fieldName
+                << " count]];" << endl;
+  }
+
+  string iter = tmp("_iter");
+  string key;
+  if (ttype->is_map()) {
+    key = tmp("key");
+    indent(out) << "NSEnumerator * " << iter << " = [" << fieldName << " keyEnumerator];" << endl;
+    indent(out) << "id " << key << ";" << endl;
+    indent(out) << "while ((" << key << " = [" << iter << " nextObject]))" << endl;
+  } else if (ttype->is_set()) {
+    key = tmp("obj");
+    indent(out) << "NSEnumerator * " << iter << " = [" << fieldName << " objectEnumerator];"
+                << endl;
+    indent(out) << "id " << key << ";" << endl;
+    indent(out) << "while ((" << key << " = [" << iter << " nextObject]))" << endl;
+  } else if (ttype->is_list()) {
+    key = tmp("idx");
+    indent(out) << "int " << key << ";" << endl;
+    indent(out) << "for (" << key << " = 0; " << key << " < [" << fieldName << " count]; " << key
+                << "++)" << endl;
+  }
+
+  scope_up(out);
+
+  if (ttype->is_map()) {
+    generate_serialize_map_element(out, (t_map*)ttype, key, fieldName);
+  } else if (ttype->is_set()) {
+    generate_serialize_set_element(out, (t_set*)ttype, key);
+  } else if (ttype->is_list()) {
+    generate_serialize_list_element(out, (t_list*)ttype, key, fieldName);
+  }
+
+  scope_down(out);
+
+  if (ttype->is_map()) {
+    indent(out) << "[outProtocol writeMapEnd];" << endl;
+  } else if (ttype->is_set()) {
+    indent(out) << "[outProtocol writeSetEnd];" << endl;
+  } else if (ttype->is_list()) {
+    indent(out) << "[outProtocol writeListEnd];" << endl;
+  }
+
+  scope_down(out);
+}
+
+/**
+ * Given a field variable name, wrap it in code that converts it to a
+ * primitive type, if necessary.
+ */
+string t_cocoa_generator::decontainerize(t_field* tfield, string fieldName) {
+  t_type* ttype = get_true_type(tfield->get_type());
+  if (ttype->is_enum()) {
+    return "[" + fieldName + " intValue]";
+  } else if (ttype->is_base_type()) {
+    t_base_type::t_base tbase = ((t_base_type*)ttype)->get_base();
+    switch (tbase) {
+    case t_base_type::TYPE_VOID:
+      throw "can't decontainerize void";
+    case t_base_type::TYPE_BOOL:
+      return "[" + fieldName + " boolValue]";
+    case t_base_type::TYPE_BYTE:
+      return "[" + fieldName + " unsignedCharValue]";
+    case t_base_type::TYPE_I16:
+      return "[" + fieldName + " shortValue]";
+    case t_base_type::TYPE_I32:
+      return "[" + fieldName + " longValue]";
+    case t_base_type::TYPE_I64:
+      return "[" + fieldName + " longLongValue]";
+    case t_base_type::TYPE_DOUBLE:
+      return "[" + fieldName + " doubleValue]";
+    default:
+      break;
+    }
+  }
+
+  // do nothing
+  return fieldName;
+}
+
+/**
+ * Serializes the members of a map.
+ */
+void t_cocoa_generator::generate_serialize_map_element(ofstream& out,
+                                                       t_map* tmap,
+                                                       string key,
+                                                       string mapName) {
+  t_field kfield(tmap->get_key_type(), key);
+  generate_serialize_field(out, &kfield, decontainerize(&kfield, key));
+  t_field vfield(tmap->get_val_type(), "[" + mapName + " objectForKey: " + key + "]");
+  generate_serialize_field(out, &vfield, decontainerize(&vfield, vfield.get_name()));
+}
+
+/**
+ * Serializes the members of a set.
+ */
+void t_cocoa_generator::generate_serialize_set_element(ofstream& out,
+                                                       t_set* tset,
+                                                       string elementName) {
+  t_field efield(tset->get_elem_type(), elementName);
+  generate_serialize_field(out, &efield, decontainerize(&efield, elementName));
+}
+
+/**
+ * Serializes the members of a list.
+ */
+void t_cocoa_generator::generate_serialize_list_element(ofstream& out,
+                                                        t_list* tlist,
+                                                        string index,
+                                                        string listName) {
+  t_field efield(tlist->get_elem_type(), "[" + listName + " objectAtIndex: " + index + "]");
+  generate_serialize_field(out, &efield, decontainerize(&efield, efield.get_name()));
+}
+
+/**
+ * Returns an Objective-C name
+ *
+ * @param ttype The type
+ * @param class_ref Do we want a Class reference istead of a type reference?
+ * @return Java type name, i.e. HashMap<Key,Value>
+ */
+string t_cocoa_generator::type_name(t_type* ttype, bool class_ref) {
+  if (ttype->is_typedef()) {
+    t_program* program = ttype->get_program();
+    return program ? (program->get_namespace("cocoa") + ttype->get_name()) : ttype->get_name();
+  }
+
+  string result;
+  if (ttype->is_base_type()) {
+    return base_type_name((t_base_type*)ttype);
+  } else if (ttype->is_enum()) {
+    return "int";
+  } else if (ttype->is_map()) {
+    result = "NSMutableDictionary";
+  } else if (ttype->is_set()) {
+    result = "NSMutableSet";
+  } else if (ttype->is_list()) {
+    result = "NSMu

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