/*
 * 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 <sstream>
#include <string>
#include <fstream>
#include <iostream>
#include <vector>
#include <cctype>

#include <sys/stat.h>
#include <stdexcept>

#include "thrift/platform.h"
#include "thrift/generate/t_oop_generator.h"

using std::map;
using std::ostream;
using std::ostringstream;
using std::string;
using std::stringstream;
using std::vector;

static const string endl = "\n"; // avoid ostream << std::endl flushes

/**
 * AS3 code generator.
 *
 */
class t_as3_generator : public t_oop_generator {
public:
  t_as3_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;

    bindable_ = false;
    for( iter = parsed_options.begin(); iter != parsed_options.end(); ++iter) {
      if( iter->first.compare("bindable") == 0) {
        bindable_ = true;
      } else {
        throw "unknown option as3:" + iter->first;
      }
    }

    out_dir_base_ = "gen-as3";
  }

  /**
   * Init and close methods
   */

  void init_generator() override;
  void close_generator() override;

  void generate_consts(std::vector<t_const*> consts) override;

  /**
   * Program-level generation functions
   */

  void generate_typedef(t_typedef* ttypedef) override;
  void generate_enum(t_enum* tenum) override;
  void generate_struct(t_struct* tstruct) override;
  void generate_xception(t_struct* txception) override;
  void generate_service(t_service* tservice) override;

  void print_const_value(std::ostream& out,
                         std::string name,
                         t_type* type,
                         t_const_value* value,
                         bool in_static,
                         bool defval = false);
  std::string render_const_value(ostream& out,
                                 std::string name,
                                 t_type* type,
                                 t_const_value* value);

  /**
   * Service-level generation functions
   */

  void generate_as3_struct(t_struct* tstruct, bool is_exception);

  void generate_as3_struct_definition(std::ostream& out,
                                      t_struct* tstruct,
                                      bool is_xception = false,
                                      bool in_class = false,
                                      bool is_result = false);
  // removed -- equality,compare_to
  void generate_as3_struct_reader(std::ostream& out, t_struct* tstruct);
  void generate_as3_validator(std::ostream& out, t_struct* tstruct);
  void generate_as3_struct_result_writer(std::ostream& out, t_struct* tstruct);
  void generate_as3_struct_writer(std::ostream& out, t_struct* tstruct);
  void generate_as3_struct_tostring(std::ostream& out, t_struct* tstruct, bool bindable);
  void generate_as3_meta_data_map(std::ostream& out, t_struct* tstruct);
  void generate_field_value_meta_data(std::ostream& out, t_type* type);
  std::string get_as3_type_string(t_type* type);
  void generate_reflection_setters(std::ostringstream& out,
                                   t_type* type,
                                   std::string field_name,
                                   std::string cap_name);
  void generate_reflection_getters(std::ostringstream& out,
                                   t_type* type,
                                   std::string field_name,
                                   std::string cap_name);
  void generate_generic_field_getters_setters(std::ostream& out, t_struct* tstruct);
  void generate_generic_isset_method(std::ostream& out, t_struct* tstruct);
  void generate_as3_bean_boilerplate(std::ostream& out, t_struct* tstruct, bool bindable);

  void generate_function_helpers(t_function* tfunction);
  std::string get_cap_name(std::string name);
  std::string generate_isset_check(t_field* field);
  std::string generate_isset_check(std::string field);
  void generate_isset_set(ostream& out, t_field* field);
  // removed std::string isset_field_id(t_field* field);

  void generate_service_interface(t_service* tservice);
  void generate_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::ostream& out, t_field* tfield, std::string prefix = "");

  void generate_deserialize_struct(std::ostream& out, t_struct* tstruct, std::string prefix = "");

  void generate_deserialize_container(std::ostream& out, t_type* ttype, std::string prefix = "");

  void generate_deserialize_set_element(std::ostream& out, t_set* tset, std::string prefix = "");

  void generate_deserialize_map_element(std::ostream& out, t_map* tmap, std::string prefix = "");

  void generate_deserialize_list_element(std::ostream& out,
                                         t_list* tlist,
                                         std::string prefix = "");

  void generate_serialize_field(std::ostream& out, t_field* tfield, std::string prefix = "");

  void generate_serialize_struct(std::ostream& out, t_struct* tstruct, std::string prefix = "");

  void generate_serialize_container(std::ostream& out, t_type* ttype, std::string prefix = "");

  void generate_serialize_map_element(std::ostream& out,
                                      t_map* tmap,
                                      std::string iter,
                                      std::string map);

  void generate_serialize_set_element(std::ostream& out, t_set* tmap, std::string iter);

  void generate_serialize_list_element(std::ostream& out, t_list* tlist, std::string iter);

  void generate_as3_doc(std::ostream& out, t_doc* tdoc);

  void generate_as3_doc(std::ostream& out, t_function* tdoc);

  /**
   * Helper rendering functions
   */

  std::string as3_package();
  std::string as3_type_imports();
  std::string as3_thrift_imports();
  std::string as3_thrift_gen_imports(t_struct* tstruct, string& imports);
  std::string as3_thrift_gen_imports(t_service* tservice);
  std::string type_name(t_type* ttype, bool in_container = false, bool in_init = false);
  std::string base_type_name(t_base_type* tbase, bool in_container = false);
  std::string declare_field(t_field* tfield, bool init = false);
  std::string function_signature(t_function* tfunction, std::string prefix = "");
  std::string argument_list(t_struct* tstruct);
  std::string type_to_enum(t_type* ttype);
  std::string get_enum_class_name(t_type* type) override;

  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();
  }

  std::string constant_name(std::string name);

private:
  /**
   * File streams
   */

  std::string package_name_;
  ofstream_with_content_based_conditional_update f_service_;
  std::string package_dir_;

  bool bindable_;
};

/**
 * Prepares for file generation by opening up the necessary file output
 * streams.
 *
 * @param tprogram The program to generate
 */
void t_as3_generator::init_generator() {
  // Make output directory
  MKDIR(get_out_dir().c_str());
  package_name_ = program_->get_namespace("as3");

  string dir = package_name_;
  string subdir = get_out_dir();
  string::size_type loc;
  while ((loc = dir.find(".")) != string::npos) {
    subdir = subdir + "/" + dir.substr(0, loc);
    MKDIR(subdir.c_str());
    dir = dir.substr(loc + 1);
  }
  if (dir.size() > 0) {
    subdir = subdir + "/" + dir;
    MKDIR(subdir.c_str());
  }

  package_dir_ = subdir;
}

/**
 * Packages the generated file
 *
 * @return String of the package, i.e. "package org.apache.thriftdemo;"
 */
string t_as3_generator::as3_package() {
  if (!package_name_.empty()) {
    return string("package ") + package_name_ + " ";
  }
  return "package ";
}

/**
 * Prints standard as3 imports
 *
 * @return List of imports for As3 types that are used in here
 */
string t_as3_generator::as3_type_imports() {
  return string() + "import org.apache.thrift.Set;\n" + "import flash.utils.ByteArray;\n"
         + "import flash.utils.Dictionary;\n\n";
}

/**
 * Prints standard as3 imports
 *
 * @return List of imports necessary for thrift
 */
string t_as3_generator::as3_thrift_imports() {
  return string() + "import org.apache.thrift.*;\n" + "import org.apache.thrift.meta_data.*;\n"
         + "import org.apache.thrift.protocol.*;\n\n";
}

/**
 * Prints imports needed for a given type
 *
 * @return List of imports necessary for a given t_struct
 */
string t_as3_generator::as3_thrift_gen_imports(t_struct* tstruct, string& imports) {

  const vector<t_field*>& members = tstruct->get_members();
  vector<t_field*>::const_iterator m_iter;

  // For each type check if it is from a differnet namespace
  for (m_iter = members.begin(); m_iter != members.end(); ++m_iter) {
    t_program* program = (*m_iter)->get_type()->get_program();
    if (program != nullptr && program != program_) {
      string package = program->get_namespace("as3");
      if (!package.empty()) {
        if (imports.find(package + "." + (*m_iter)->get_type()->get_name()) == string::npos) {
          imports.append("import " + package + "." + (*m_iter)->get_type()->get_name() + ";\n");
        }
      }
    }
  }
  return imports;
}

/**
 * Prints imports needed for a given type
 *
 * @return List of imports necessary for a given t_service
 */
string t_as3_generator::as3_thrift_gen_imports(t_service* tservice) {
  string imports;
  const vector<t_function*>& functions = tservice->get_functions();
  vector<t_function*>::const_iterator f_iter;

  // For each type check if it is from a differnet namespace
  for (f_iter = functions.begin(); f_iter != functions.end(); ++f_iter) {
    t_program* program = (*f_iter)->get_returntype()->get_program();
    if (program != nullptr && program != program_) {
      string package = program->get_namespace("as3");
      if (!package.empty()) {
        if (imports.find(package + "." + (*f_iter)->get_returntype()->get_name()) == string::npos) {
          imports.append("import " + package + "." + (*f_iter)->get_returntype()->get_name()
                         + ";\n");
        }
      }
    }

    as3_thrift_gen_imports((*f_iter)->get_arglist(), imports);
    as3_thrift_gen_imports((*f_iter)->get_xceptions(), imports);
  }

  return imports;
}

/**
 * Nothing in As3
 */
void t_as3_generator::close_generator() {
}

/**
 * Generates a typedef. This is not done in As3, since it does
 * not support arbitrary name replacements, and it'd be a wacky waste
 * of overhead to make wrapper classes.
 *
 * @param ttypedef The type definition
 */
void t_as3_generator::generate_typedef(t_typedef* ttypedef) {
  (void)ttypedef;
}

/**
 * Enums are a class with a set of static constants.
 *
 * @param tenum The enumeration
 */
void t_as3_generator::generate_enum(t_enum* tenum) {
  // Make output file
  string f_enum_name = package_dir_ + "/" + (tenum->get_name()) + ".as";
  ofstream_with_content_based_conditional_update f_enum;
  f_enum.open(f_enum_name);

  // Comment and package it
  f_enum << autogen_comment() << as3_package() << endl;

  scope_up(f_enum);
  // Add as3 imports
  f_enum << string() + "import org.apache.thrift.Set;" << endl << "import flash.utils.Dictionary;"
         << endl;

  indent(f_enum) << "public class " << tenum->get_name() << " ";
  scope_up(f_enum);

  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) {
    int value = (*c_iter)->get_value();
    indent(f_enum) << "public static const " << (*c_iter)->get_name() << ":int = " << value << ";"
                   << endl;
  }

  // Create a static Set with all valid values for this enum
  f_enum << endl;

  indent(f_enum) << "public static const VALID_VALUES:Set = new Set(";
  indent_up();
  bool firstValue = true;
  for (c_iter = constants.begin(); c_iter != constants.end(); ++c_iter) {
    // populate set
    f_enum << (firstValue ? "" : ", ") << (*c_iter)->get_name();
    firstValue = false;
  }
  indent_down();
  f_enum << ");" << endl;

  indent(f_enum) << "public static const VALUES_TO_NAMES:Dictionary = new Dictionary();" << endl;

  scope_up(f_enum);
  for (c_iter = constants.begin(); c_iter != constants.end(); ++c_iter) {
    indent(f_enum) << "VALUES_TO_NAMES[" << (*c_iter)->get_name() << "] = \""
                   << (*c_iter)->get_name() << "\";" << endl;
  }
  f_enum << endl;

  scope_down(f_enum);

  scope_down(f_enum); // end class

  scope_down(f_enum); // end package

  f_enum.close();
}

/**
 * Generates a class that holds all the constants.
 */
void t_as3_generator::generate_consts(std::vector<t_const*> consts) {
  if (consts.empty()) {
    return;
  }

  string f_consts_name = package_dir_ + "/" + program_name_ + "Constants.as";
  ofstream_with_content_based_conditional_update f_consts;
  f_consts.open(f_consts_name);

  // Print header
  f_consts << autogen_comment() << as3_package();

  scope_up(f_consts);
  f_consts << endl;

  f_consts << as3_type_imports();

  indent(f_consts) << "public class " << program_name_ << "Constants {" << endl << endl;
  indent_up();
  vector<t_const*>::iterator c_iter;
  for (c_iter = consts.begin(); c_iter != consts.end(); ++c_iter) {
    print_const_value(f_consts,
                      (*c_iter)->get_name(),
                      (*c_iter)->get_type(),
                      (*c_iter)->get_value(),
                      false);
  }
  indent_down();
  indent(f_consts) << "}" << endl;
  scope_down(f_consts);
  f_consts.close();
}

void t_as3_generator::print_const_value(std::ostream& out,
                                        string name,
                                        t_type* type,
                                        t_const_value* value,
                                        bool in_static,
                                        bool defval) {
  type = get_true_type(type);

  indent(out);
  if (!defval) {
    out << (in_static ? "var " : "public static const ");
  }
  if (type->is_base_type()) {
    string v2 = render_const_value(out, name, type, value);
    out << name;
    if (!defval) {
      out << ":" << type_name(type);
    }
    out << " = " << v2 << ";" << endl << endl;
  } else if (type->is_enum()) {
    out << name;
    if (!defval) {
      out << ":" << type_name(type);
    }
    out << " = " << value->get_integer() << ";" << endl << endl;
  } else if (type->is_struct() || type->is_xception()) {
    const vector<t_field*>& fields = ((t_struct*)type)->get_members();
    vector<t_field*>::const_iterator f_iter;
    const map<t_const_value*, t_const_value*, t_const_value::value_compare>& val = value->get_map();
    map<t_const_value*, t_const_value*, t_const_value::value_compare>::const_iterator v_iter;
    out << name << ":" << type_name(type) << " = new " << type_name(type, false, true) << "();"
        << endl;
    if (!in_static) {
      indent(out) << "{" << endl;
      indent_up();
      indent(out) << "new function():void {" << endl;
      indent_up();
    }
    for (v_iter = val.begin(); v_iter != val.end(); ++v_iter) {
      t_type* field_type = nullptr;
      for (f_iter = fields.begin(); f_iter != fields.end(); ++f_iter) {
        if ((*f_iter)->get_name() == v_iter->first->get_string()) {
          field_type = (*f_iter)->get_type();
        }
      }
      if (field_type == nullptr) {
        throw "type error: " + type->get_name() + " has no field " + v_iter->first->get_string();
      }
      string val = render_const_value(out, name, field_type, v_iter->second);
      indent(out) << name << ".";
      out << v_iter->first->get_string() << " = " << val << ";" << endl;
    }
    if (!in_static) {
      indent_down();
      indent(out) << "}();" << endl;
      indent_down();
      indent(out) << "}" << endl;
    }
    out << endl;
  } else if (type->is_map()) {
    out << name;
    if (!defval) {
      out << ":" << type_name(type);
    }
    out << " = new " << type_name(type, false, true) << "();" << endl;
    if (!in_static) {
      indent(out) << "{" << endl;
      indent_up();
      indent(out) << "new function():void {" << endl;
      indent_up();
    }
    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*, t_const_value::value_compare>& val = value->get_map();
    map<t_const_value*, t_const_value*, t_const_value::value_compare>::const_iterator v_iter;
    for (v_iter = val.begin(); v_iter != val.end(); ++v_iter) {
      string key = render_const_value(out, name, ktype, v_iter->first);
      string val = render_const_value(out, name, vtype, v_iter->second);
      indent(out) << name << "[" << key << "] = " << val << ";" << endl;
    }
    if (!in_static) {
      indent_down();
      indent(out) << "}();" << endl;
      indent_down();
      indent(out) << "}" << endl;
    }
    out << endl;
  } else if (type->is_list() || type->is_set()) {
    out << name;
    if (!defval) {
      out << ":" << type_name(type);
    }
    out << " = new " << type_name(type, false, true) << "();" << endl;
    if (!in_static) {
      indent(out) << "{" << endl;
      indent_up();
      indent(out) << "new function():void {" << endl;
      indent_up();
    }
    t_type* etype;
    if (type->is_list()) {
      etype = ((t_list*)type)->get_elem_type();
    } else {
      etype = ((t_set*)type)->get_elem_type();
    }
    const vector<t_const_value*>& val = value->get_list();
    vector<t_const_value*>::const_iterator v_iter;
    for (v_iter = val.begin(); v_iter != val.end(); ++v_iter) {
      string val = render_const_value(out, name, etype, *v_iter);
      indent(out) << name << "." << (type->is_list() ? "push" : "add") << "(" << val << ");"
                  << endl;
    }
    if (!in_static) {
      indent_down();
      indent(out) << "}();" << endl;
      indent_down();
      indent(out) << "}" << endl;
    }
    out << endl;
  } else {
    throw "compiler error: no const of type " + type->get_name();
  }
}

string t_as3_generator::render_const_value(ostream& out,
                                           string name,
                                           t_type* type,
                                           t_const_value* value) {
  (void)name;
  type = get_true_type(type);
  std::ostringstream render;

  if (type->is_base_type()) {
    t_base_type::t_base tbase = ((t_base_type*)type)->get_base();
    switch (tbase) {
    case t_base_type::TYPE_STRING:
      render << '"' << get_escaped_string(value) << '"';
      break;
    case t_base_type::TYPE_BOOL:
      render << ((value->get_integer() > 0) ? "true" : "false");
      break;
    case t_base_type::TYPE_I8:
      render << "(byte)" << value->get_integer();
      break;
    case t_base_type::TYPE_I16:
      render << "(short)" << value->get_integer();
      break;
    case t_base_type::TYPE_I32:
      render << value->get_integer();
      break;
    case t_base_type::TYPE_I64:
      render << value->get_integer() << "L";
      break;
    case t_base_type::TYPE_DOUBLE:
      if (value->get_type() == t_const_value::CV_INTEGER) {
        render << "(double)" << value->get_integer();
      } else {
        render << value->get_double();
      }
      break;
    default:
      throw "compiler error: no const of base type " + t_base_type::t_base_name(tbase);
    }
  } else if (type->is_enum()) {
    render << value->get_integer();
  } else {
    string t = tmp("tmp");
    print_const_value(out, t, type, value, true);
    render << t;
  }

  return render.str();
}

/**
 * Generates a struct definition for a thrift data type. This is a class
 * with data members, read(), write(), and an inner Isset class.
 *
 * @param tstruct The struct definition
 */
void t_as3_generator::generate_struct(t_struct* tstruct) {
  generate_as3_struct(tstruct, false);
}

/**
 * Exceptions are structs, but they inherit from Exception
 *
 * @param tstruct The struct definition
 */
void t_as3_generator::generate_xception(t_struct* txception) {
  generate_as3_struct(txception, true);
}

/**
 * As3 struct definition.
 *
 * @param tstruct The struct definition
 */
void t_as3_generator::generate_as3_struct(t_struct* tstruct, bool is_exception) {
  // Make output file
  string f_struct_name = package_dir_ + "/" + (tstruct->get_name()) + ".as";
  ofstream_with_content_based_conditional_update f_struct;
  f_struct.open(f_struct_name.c_str());

  f_struct << autogen_comment() << as3_package();

  scope_up(f_struct);
  f_struct << endl;

  string imports;

  f_struct << as3_type_imports() << as3_thrift_imports() << as3_thrift_gen_imports(tstruct, imports)
           << endl;

  if (bindable_ && !is_exception) {
    f_struct << "import flash.events.Event;" << endl << "import flash.events.EventDispatcher;"
             << endl << "import mx.events.PropertyChangeEvent;" << endl;
  }

  generate_as3_struct_definition(f_struct, tstruct, is_exception);

  scope_down(f_struct); // end of package
  f_struct.close();
}

/**
 * As3 struct definition. This has various parameters, as it could be
 * generated standalone or inside another class as a helper. If it
 * is a helper than it is a static class.
 *
 * @param tstruct      The struct definition
 * @param is_exception Is this an exception?
 * @param in_class     If inside a class, needs to be static class
 * @param is_result    If this is a result it needs a different writer
 */
void t_as3_generator::generate_as3_struct_definition(ostream& out,
                                                     t_struct* tstruct,
                                                     bool is_exception,
                                                     bool in_class,
                                                     bool is_result) {
  generate_as3_doc(out, tstruct);

  bool is_final = (tstruct->annotations_.find("final") != tstruct->annotations_.end());
  bool bindable = !is_exception && !in_class && bindable_;

  indent(out) << (in_class ? "" : "public ") << (is_final ? "final " : "") << "class "
              << tstruct->get_name() << " ";

  if (is_exception) {
    out << "extends Error ";
  } else if (bindable) {
    out << "extends EventDispatcher ";
  }
  out << "implements TBase ";

  scope_up(out);

  indent(out) << "private static const STRUCT_DESC:TStruct = new TStruct(\"" << tstruct->get_name()
              << "\");" << endl;

  // Members are public for -as3, private for -as3bean
  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) {
    indent(out) << "private static const " << constant_name((*m_iter)->get_name())
                << "_FIELD_DESC:TField = new TField(\"" << (*m_iter)->get_name() << "\", "
                << type_to_enum((*m_iter)->get_type()) << ", " << (*m_iter)->get_key() << ");"
                << endl;
  }

  out << endl;

  for (m_iter = members.begin(); m_iter != members.end(); ++m_iter) {
    generate_as3_doc(out, *m_iter);
    indent(out) << "private var _" << (*m_iter)->get_name() + ":" + type_name((*m_iter)->get_type())
                << ";" << endl;

    indent(out) << "public static const " << upcase_string((*m_iter)->get_name())
                << ":int = " << (*m_iter)->get_key() << ";" << endl;
  }

  out << endl;

  // Inner Isset class
  if (members.size() > 0) {
    for (m_iter = members.begin(); m_iter != members.end(); ++m_iter) {
      if (!type_can_be_null((*m_iter)->get_type())) {
        indent(out) << "private var __isset_" << (*m_iter)->get_name() << ":Boolean = false;"
                    << endl;
      }
    }
  }

  out << endl;

  generate_as3_meta_data_map(out, tstruct);

  // Static initializer to populate global class to struct metadata map
  indent(out) << "{" << endl;
  indent_up();
  indent(out) << "FieldMetaData.addStructMetaDataMap(" << type_name(tstruct) << ", metaDataMap);"
              << endl;
  indent_down();
  indent(out) << "}" << endl << endl;

  // Default constructor
  indent(out) << "public function " << tstruct->get_name() << "() {" << endl;
  indent_up();
  for (m_iter = members.begin(); m_iter != members.end(); ++m_iter) {
    if ((*m_iter)->get_value() != nullptr) {
      indent(out) << "this._" << (*m_iter)->get_name() << " = "
                  << (*m_iter)->get_value()->get_integer() << ";" << endl;
    }
  }
  indent_down();
  indent(out) << "}" << endl << endl;

  generate_as3_bean_boilerplate(out, tstruct, bindable);
  generate_generic_field_getters_setters(out, tstruct);
  generate_generic_isset_method(out, tstruct);

  generate_as3_struct_reader(out, tstruct);
  if (is_result) {
    generate_as3_struct_result_writer(out, tstruct);
  } else {
    generate_as3_struct_writer(out, tstruct);
  }
  generate_as3_struct_tostring(out, tstruct, bindable);
  generate_as3_validator(out, tstruct);
  scope_down(out);
  out << endl;
}

/**
 * Generates a function to read all the fields of the struct.
 *
 * @param tstruct The struct definition
 */
void t_as3_generator::generate_as3_struct_reader(ostream& out, t_struct* tstruct) {
  out << indent() << "public function read(iprot:TProtocol):void {" << endl;
  indent_up();

  const vector<t_field*>& fields = tstruct->get_members();
  vector<t_field*>::const_iterator f_iter;

  // Declare stack tmp variables and read struct header
  out << indent() << "var field:TField;" << endl << indent() << "iprot.readStructBegin();" << endl;

  // Loop over reading in fields
  indent(out) << "while (true)" << endl;
  scope_up(out);

  // Read beginning field marker
  indent(out) << "field = iprot.readFieldBegin();" << endl;

  // Check for field STOP marker and break
  indent(out) << "if (field.type == 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 (field.id)" << endl;

  scope_up(out);

  // Generate deserialization code for known cases
  for (f_iter = fields.begin(); f_iter != fields.end(); ++f_iter) {
    indent(out) << "case " << upcase_string((*f_iter)->get_name()) << ":" << endl;
    indent_up();
    indent(out) << "if (field.type == " << type_to_enum((*f_iter)->get_type()) << ") {" << endl;
    indent_up();

    generate_deserialize_field(out, *f_iter, "this.");
    generate_isset_set(out, *f_iter);
    indent_down();
    out << indent() << "} else { " << endl << indent() << "  TProtocolUtil.skip(iprot, field.type);"
        << endl << indent() << "}" << endl << indent() << "break;" << endl;
    indent_down();
  }

  // In the default case we skip the field
  out << indent() << "default:" << endl << indent() << "  TProtocolUtil.skip(iprot, field.type);"
      << endl << indent() << "  break;" << endl;

  scope_down(out);

  // Read field end marker
  indent(out) << "iprot.readFieldEnd();" << endl;

  scope_down(out);

  out << indent() << "iprot.readStructEnd();" << endl << endl;

  // in non-beans style, check for required fields of primitive type
  // (which can be checked here but not in the general validate method)
  out << endl << indent() << "// check for required fields of primitive type, which can't be "
                             "checked in the validate method" << endl;
  for (f_iter = fields.begin(); f_iter != fields.end(); ++f_iter) {
    if ((*f_iter)->get_req() == t_field::T_REQUIRED && !type_can_be_null((*f_iter)->get_type())) {
      out << indent() << "if (!__isset_" << (*f_iter)->get_name() << ") {" << endl << indent()
          << "  throw new TProtocolError(TProtocolError.UNKNOWN, \"Required field '"
          << (*f_iter)->get_name()
          << "' was not found in serialized data! Struct: \" + toString());" << endl << indent()
          << "}" << endl;
    }
  }

  // performs various checks (e.g. check that all required fields are set)
  indent(out) << "validate();" << endl;

  indent_down();
  out << indent() << "}" << endl << endl;
}

// generates as3 method to perform various checks
// (e.g. check that all required fields are set)
void t_as3_generator::generate_as3_validator(ostream& out, t_struct* tstruct) {
  indent(out) << "public function validate():void {" << 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) {
    if ((*f_iter)->get_req() == t_field::T_REQUIRED) {
      if (type_can_be_null((*f_iter)->get_type())) {
        indent(out) << "if (" << (*f_iter)->get_name() << " == null) {" << endl;
        indent(out) << "  throw new TProtocolError(TProtocolError.UNKNOWN, \"Required field '"
                    << (*f_iter)->get_name() << "' was not present! Struct: \" + toString());"
                    << endl;
        indent(out) << "}" << endl;
      } else {
        indent(out) << "// alas, we cannot check '" << (*f_iter)->get_name()
                    << "' because it's a primitive and you chose the non-beans generator." << endl;
      }
    }
  }

  // check that fields of type enum have valid values
  out << indent() << "// check that fields of type enum have valid values" << endl;
  for (f_iter = fields.begin(); f_iter != fields.end(); ++f_iter) {
    t_field* field = (*f_iter);
    t_type* type = field->get_type();
    // if field is an enum, check that its value is valid
    if (type->is_enum()) {
      indent(out) << "if (" << generate_isset_check(field) << " && !" << get_enum_class_name(type)
                  << ".VALID_VALUES.contains(" << field->get_name() << ")){" << endl;
      indent_up();
      indent(out) << "throw new TProtocolError(TProtocolError.UNKNOWN, \"The field '"
                  << field->get_name() << "' has been assigned the invalid value \" + "
                  << field->get_name() << ");" << endl;
      indent_down();
      indent(out) << "}" << endl;
    }
  }

  indent_down();
  indent(out) << "}" << endl << endl;
}

/**
 * Generates a function to write all the fields of the struct
 *
 * @param tstruct The struct definition
 */
void t_as3_generator::generate_as3_struct_writer(ostream& out, t_struct* tstruct) {
  out << indent() << "public function write(oprot:TProtocol):void {" << endl;
  indent_up();

  string name = tstruct->get_name();
  const vector<t_field*>& fields = tstruct->get_sorted_members();
  vector<t_field*>::const_iterator f_iter;

  // performs various checks (e.g. check that all required fields are set)
  indent(out) << "validate();" << endl << endl;

  indent(out) << "oprot.writeStructBegin(STRUCT_DESC);" << endl;

  for (f_iter = fields.begin(); f_iter != fields.end(); ++f_iter) {
    bool could_be_unset = (*f_iter)->get_req() == t_field::T_OPTIONAL;
    if (could_be_unset) {
      indent(out) << "if (" << generate_isset_check(*f_iter) << ") {" << endl;
      indent_up();
    }
    bool null_allowed = type_can_be_null((*f_iter)->get_type());
    if (null_allowed) {
      out << indent() << "if (this." << (*f_iter)->get_name() << " != null) {" << endl;
      indent_up();
    }

    indent(out) << "oprot.writeFieldBegin(" << constant_name((*f_iter)->get_name())
                << "_FIELD_DESC);" << endl;

    // Write field contents
    generate_serialize_field(out, *f_iter, "this.");

    // Write field closer
    indent(out) << "oprot.writeFieldEnd();" << endl;

    if (null_allowed) {
      indent_down();
      indent(out) << "}" << endl;
    }
    if (could_be_unset) {
      indent_down();
      indent(out) << "}" << endl;
    }
  }
  // Write the struct map
  out << indent() << "oprot.writeFieldStop();" << endl << indent() << "oprot.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 in the Isset array, and only one of them
 * can be set at a time.
 *
 * @param tstruct The struct definition
 */
void t_as3_generator::generate_as3_struct_result_writer(ostream& out, t_struct* tstruct) {
  out << indent() << "public function write(oprot:TProtocol):void {" << endl;
  indent_up();

  string name = tstruct->get_name();
  const vector<t_field*>& fields = tstruct->get_sorted_members();
  vector<t_field*>::const_iterator f_iter;

  indent(out) << "oprot.writeStructBegin(STRUCT_DESC);" << endl;

  bool first = true;
  for (f_iter = fields.begin(); f_iter != fields.end(); ++f_iter) {
    if (first) {
      first = false;
      out << endl << indent() << "if ";
    } else {
      out << " else if ";
    }

    out << "(this." << generate_isset_check(*f_iter) << ") {" << endl;

    indent_up();

    indent(out) << "oprot.writeFieldBegin(" << constant_name((*f_iter)->get_name())
                << "_FIELD_DESC);" << endl;

    // Write field contents
    generate_serialize_field(out, *f_iter, "this.");

    // Write field closer
    indent(out) << "oprot.writeFieldEnd();" << endl;

    indent_down();
    indent(out) << "}";
  }
  // Write the struct map
  out << endl << indent() << "oprot.writeFieldStop();" << endl << indent()
      << "oprot.writeStructEnd();" << endl;

  indent_down();
  out << indent() << "}" << endl << endl;
}

void t_as3_generator::generate_reflection_getters(ostringstream& out,
                                                  t_type* type,
                                                  string field_name,
                                                  string cap_name) {
  (void)type;
  (void)cap_name;
  indent(out) << "case " << upcase_string(field_name) << ":" << endl;
  indent_up();
  indent(out) << "return this." << field_name << ";" << endl;
  indent_down();
}

void t_as3_generator::generate_reflection_setters(ostringstream& out,
                                                  t_type* type,
                                                  string field_name,
                                                  string cap_name) {
  (void)type;
  (void)cap_name;
  indent(out) << "case " << upcase_string(field_name) << ":" << endl;
  indent_up();
  indent(out) << "if (value == null) {" << endl;
  indent(out) << "  unset" << get_cap_name(field_name) << "();" << endl;
  indent(out) << "} else {" << endl;
  indent(out) << "  this." << field_name << " = value;" << endl;
  indent(out) << "}" << endl;
  indent(out) << "break;" << endl << endl;

  indent_down();
}

void t_as3_generator::generate_generic_field_getters_setters(std::ostream& out,
                                                             t_struct* tstruct) {

  std::ostringstream getter_stream;
  std::ostringstream setter_stream;

  // build up the bodies of both the getter and setter at once
  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 = get_cap_name(field_name);

    indent_up();
    generate_reflection_setters(setter_stream, type, field_name, cap_name);
    generate_reflection_getters(getter_stream, type, field_name, cap_name);
    indent_down();
  }

  // create the setter
  indent(out) << "public function setFieldValue(fieldID:int, value:*):void {" << endl;
  indent_up();

  indent(out) << "switch (fieldID) {" << endl;

  out << setter_stream.str();

  indent(out) << "default:" << endl;
  indent(out) << "  throw new ArgumentError(\"Field \" + fieldID + \" doesn't exist!\");" << endl;

  indent(out) << "}" << endl;

  indent_down();
  indent(out) << "}" << endl << endl;

  // create the getter
  indent(out) << "public function getFieldValue(fieldID:int):* {" << endl;
  indent_up();

  indent(out) << "switch (fieldID) {" << endl;

  out << getter_stream.str();

  indent(out) << "default:" << endl;
  indent(out) << "  throw new ArgumentError(\"Field \" + fieldID + \" doesn't exist!\");" << endl;

  indent(out) << "}" << endl;

  indent_down();

  indent(out) << "}" << endl << endl;
}

// Creates a generic isSet method that takes the field number as argument
void t_as3_generator::generate_generic_isset_method(std::ostream& out, t_struct* tstruct) {
  const vector<t_field*>& fields = tstruct->get_members();
  vector<t_field*>::const_iterator f_iter;

  // create the isSet method
  indent(out) << "// Returns true if field corresponding to fieldID is set (has been assigned a "
                 "value) and false otherwise" << endl;
  indent(out) << "public function isSet(fieldID:int):Boolean {" << endl;
  indent_up();
  indent(out) << "switch (fieldID) {" << endl;

  for (f_iter = fields.begin(); f_iter != fields.end(); ++f_iter) {
    t_field* field = *f_iter;
    indent(out) << "case " << upcase_string(field->get_name()) << ":" << endl;
    indent_up();
    indent(out) << "return " << generate_isset_check(field) << ";" << endl;
    indent_down();
  }

  indent(out) << "default:" << endl;
  indent(out) << "  throw new ArgumentError(\"Field \" + fieldID + \" doesn't exist!\");" << endl;

  indent(out) << "}" << endl;

  indent_down();
  indent(out) << "}" << endl << endl;
}

/**
 * Generates a set of As3 Bean boilerplate functions (setters, getters, etc.)
 * for the given struct.
 *
 * @param tstruct The struct definition
 */
void t_as3_generator::generate_as3_bean_boilerplate(ostream& out,
                                                    t_struct* tstruct,
                                                    bool bindable) {
  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 = get_cap_name(field_name);

    // Simple getter
    generate_as3_doc(out, field);
    indent(out) << "public function get " << field_name << "():" << type_name(type) << " {" << endl;
    indent_up();
    indent(out) << "return this._" << field_name << ";" << endl;
    indent_down();
    indent(out) << "}" << endl << endl;

    // Simple setter
    generate_as3_doc(out, field);
    std::string propName = tmp("thriftPropertyChange");
    if (bindable) {
      indent(out) << "[Bindable(event=\"" << propName << "\")]" << endl;
    }
    indent(out) << "public function set " << field_name << "(" << field_name << ":"
                << type_name(type) << "):void {" << endl;
    indent_up();
    indent(out) << "this._" << field_name << " = " << field_name << ";" << endl;
    generate_isset_set(out, field);

    if (bindable) {
      // We have to use a custom event rather than the default, because if you use the default,
      // the setter only gets called if the value has changed - this means calling
      // foo.setIntValue(0)
      // will not cause foo.isIntValueSet() to return true since the value of foo._intValue wasn't
      // changed
      // so the setter was never called.
      indent(out) << "dispatchEvent(new Event(\"" << propName << "\"));" << endl;

      // However, if you just use a custom event, then collections won't be able to detect when
      // elements
      // in the collections have changed since they listed for PropertyChangeEvents.  So, we
      // dispatch both.
      indent(out) << "dispatchEvent(new PropertyChangeEvent(PropertyChangeEvent.PROPERTY_CHANGE));"
                  << endl;
    }
    indent_down();
    indent(out) << "}" << endl << endl;

    // Unsetter
    indent(out) << "public function unset" << cap_name << "():void {" << endl;
    indent_up();
    if (type_can_be_null(type)) {
      indent(out) << "this." << field_name << " = null;" << endl;
    } else {
      indent(out) << "this.__isset_" << field_name << " = false;" << endl;
    }
    indent_down();
    indent(out) << "}" << endl << endl;

    // isSet method
    indent(out) << "// Returns true if field " << field_name
                << " is set (has been assigned a value) and false otherwise" << endl;
    indent(out) << "public function is" << get_cap_name("set") << cap_name << "():Boolean {"
                << endl;
    indent_up();
    if (type_can_be_null(type)) {
      indent(out) << "return this." << field_name << " != null;" << endl;
    } else {
      indent(out) << "return this.__isset_" << field_name << ";" << endl;
    }
    indent_down();
    indent(out) << "}" << endl << endl;
  }
}

/**
 * Generates a toString() method for the given struct
 *
 * @param tstruct The struct definition
 */
void t_as3_generator::generate_as3_struct_tostring(ostream& out,
                                                   t_struct* tstruct,
                                                   bool bindable) {
  // If it's bindable, it extends EventDispatcher so toString is an override.
  out << indent() << "public " << (bindable ? "override " : "") << "function toString():String {"
      << endl;
  indent_up();

  out << indent() << "var ret:String = new String(\"" << tstruct->get_name() << "(\");" << endl;
  out << indent() << "var first:Boolean = true;" << endl << 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) {
    bool could_be_unset = (*f_iter)->get_req() == t_field::T_OPTIONAL;
    if (could_be_unset) {
      indent(out) << "if (" << generate_isset_check(*f_iter) << ") {" << endl;
      indent_up();
    }

    t_field* field = (*f_iter);

    if (!first) {
      indent(out) << "if (!first) ret +=  \", \";" << endl;
    }
    indent(out) << "ret += \"" << (*f_iter)->get_name() << ":\";" << endl;
    bool can_be_null = type_can_be_null(field->get_type());
    if (can_be_null) {
      indent(out) << "if (this." << (*f_iter)->get_name() << " == null) {" << endl;
      indent(out) << "  ret += \"null\";" << endl;
      indent(out) << "} else {" << endl;
      indent_up();
    }

    if (field->get_type()->is_binary()) {
      indent(out) << "  ret += \"BINARY\";" << endl;
    } else if (field->get_type()->is_enum()) {
      indent(out) << "var " << field->get_name()
                  << "_name:String = " << get_enum_class_name(field->get_type())
                  << ".VALUES_TO_NAMES[this." << (*f_iter)->get_name() << "];" << endl;
      indent(out) << "if (" << field->get_name() << "_name != null) {" << endl;
      indent(out) << "  ret += " << field->get_name() << "_name;" << endl;
      indent(out) << "  ret += \" (\";" << endl;
      indent(out) << "}" << endl;
      indent(out) << "ret += this." << field->get_name() << ";" << endl;
      indent(out) << "if (" << field->get_name() << "_name != null) {" << endl;
      indent(out) << "  ret += \")\";" << endl;
      indent(out) << "}" << endl;
    } else {
      indent(out) << "ret += this." << (*f_iter)->get_name() << ";" << endl;
    }

    if (can_be_null) {
      indent_down();
      indent(out) << "}" << endl;
    }
    indent(out) << "first = false;" << endl;

    if (could_be_unset) {
      indent_down();
      indent(out) << "}" << endl;
    }
    first = false;
  }
  out << indent() << "ret += \")\";" << endl << indent() << "return ret;" << endl;

  indent_down();
  indent(out) << "}" << endl << endl;
}

/**
 * Generates a static map with meta data to store information such as fieldID to
 * fieldName mapping
 *
 * @param tstruct The struct definition
 */
void t_as3_generator::generate_as3_meta_data_map(ostream& out, t_struct* tstruct) {
  const vector<t_field*>& fields = tstruct->get_members();
  vector<t_field*>::const_iterator f_iter;

  // Static Map with fieldID -> FieldMetaData mappings
  indent(out) << "public static const metaDataMap:Dictionary = new Dictionary();" << endl;

  if (fields.size() > 0) {
    // Populate map
    scope_up(out);
    for (f_iter = fields.begin(); f_iter != fields.end(); ++f_iter) {
      t_field* field = *f_iter;
      std::string field_name = field->get_name();
      indent(out) << "metaDataMap[" << upcase_string(field_name) << "] = new FieldMetaData(\""
                  << field_name << "\", ";

      // Set field requirement type (required, optional, etc.)
      if (field->get_req() == t_field::T_REQUIRED) {
        out << "TFieldRequirementType.REQUIRED, ";
      } else if (field->get_req() == t_field::T_OPTIONAL) {
        out << "TFieldRequirementType.OPTIONAL, ";
      } else {
        out << "TFieldRequirementType.DEFAULT, ";
      }

      // Create value meta data
      generate_field_value_meta_data(out, field->get_type());
      out << ");" << endl;
    }
    scope_down(out);
  }
}

/**
 * Returns a string with the as3 representation of the given thrift type
 * (e.g. for the type struct it returns "TType.STRUCT")
 */
std::string t_as3_generator::get_as3_type_string(t_type* type) {
  if (type->is_list()) {
    return "TType.LIST";
  } else if (type->is_map()) {
    return "TType.MAP";
  } else if (type->is_set()) {
    return "TType.SET";
  } else if (type->is_struct() || type->is_xception()) {
    return "TType.STRUCT";
  } else if (type->is_enum()) {
    return "TType.I32";
  } else if (type->is_typedef()) {
    return get_as3_type_string(((t_typedef*)type)->get_type());
  } else if (type->is_base_type()) {
    switch (((t_base_type*)type)->get_base()) {
    case t_base_type::TYPE_VOID:
      return "TType.VOID";
      break;
    case t_base_type::TYPE_STRING:
      return "TType.STRING";
      break;
    case t_base_type::TYPE_BOOL:
      return "TType.BOOL";
      break;
    case t_base_type::TYPE_I8:
      return "TType.BYTE";
      break;
    case t_base_type::TYPE_I16:
      return "TType.I16";
      break;
    case t_base_type::TYPE_I32:
      return "TType.I32";
      break;
    case t_base_type::TYPE_I64:
      return "TType.I64";
      break;
    case t_base_type::TYPE_DOUBLE:
      return "TType.DOUBLE";
      break;
    default:
      throw std::runtime_error("Unknown thrift type \"" + type->get_name()
                               + "\" passed to t_as3_generator::get_as3_type_string!");
      break; // This should never happen!
    }
  } else {
    throw std::runtime_error(
        "Unknown thrift type \"" + type->get_name()
        + "\" passed to t_as3_generator::get_as3_type_string!"); // This should never happen!
  }
}

void t_as3_generator::generate_field_value_meta_data(std::ostream& out, t_type* type) {
  out << endl;
  indent_up();
  indent_up();
  if (type->is_struct() || type->is_xception()) {
    indent(out) << "new StructMetaData(TType.STRUCT, " << type_name(type);
  } else if (type->is_container()) {
    if (type->is_list()) {
      indent(out) << "new ListMetaData(TType.LIST, ";
      t_type* elem_type = ((t_list*)type)->get_elem_type();
      generate_field_value_meta_data(out, elem_type);
    } else if (type->is_set()) {
      indent(out) << "new SetMetaData(TType.SET, ";
      t_type* elem_type = ((t_list*)type)->get_elem_type();
      generate_field_value_meta_data(out, elem_type);
    } else { // map
      indent(out) << "new MapMetaData(TType.MAP, ";
      t_type* key_type = ((t_map*)type)->get_key_type();
      t_type* val_type = ((t_map*)type)->get_val_type();
      generate_field_value_meta_data(out, key_type);
      out << ", ";
      generate_field_value_meta_data(out, val_type);
    }
  } else {
    indent(out) << "new FieldValueMetaData(" << get_as3_type_string(type);
  }
  out << ")";
  indent_down();
  indent_down();
}

/**
 * Generates a thrift service. In C++, this comprises an entirely separate
 * header and source file. The header file defines the methods and includes
 * the data types defined in the main header file, and the implementation
 * file contains implementations of the basic printer and default interfaces.
 *
 * @param tservice The service definition
 */
void t_as3_generator::generate_service(t_service* tservice) {
  // Make interface file
  string f_service_name = package_dir_ + "/" + service_name_ + ".as";
  f_service_.open(f_service_name.c_str());

  f_service_ << autogen_comment() << as3_package();

  scope_up(f_service_);

  f_service_ << endl << as3_type_imports() << as3_thrift_imports()
             << as3_thrift_gen_imports(tservice);

  if (tservice->get_extends() != nullptr) {
    t_type* parent = tservice->get_extends();
    string parent_namespace = parent->get_program()->get_namespace("as3");
    if (!parent_namespace.empty() && parent_namespace != package_name_) {
      f_service_ << "import " << type_name(parent) << ";" << endl;
    }
  }

  f_service_ << endl;

  generate_service_interface(tservice);

  scope_down(f_service_);
  f_service_.close();

  // Now make the implementation/client file
  f_service_name = package_dir_ + "/" + service_name_ + "Impl.as";
  f_service_.open(f_service_name.c_str());

  f_service_ << autogen_comment() << as3_package();

  scope_up(f_service_);

  f_service_ << endl << as3_type_imports() << as3_thrift_imports()
             << as3_thrift_gen_imports(tservice);

  if (tservice->get_extends() != nullptr) {
    t_type* parent = tservice->get_extends();
    string parent_namespace = parent->get_program()->get_namespace("as3");
    if (!parent_namespace.empty() && parent_namespace != package_name_) {
      f_service_ << "import " << type_name(parent) << "Impl;" << endl;
    }
  }

  f_service_ << endl;

  generate_service_client(tservice);
  scope_down(f_service_);

  f_service_ << as3_type_imports();
  f_service_ << as3_thrift_imports();
  f_service_ << as3_thrift_gen_imports(tservice);
  if (!package_name_.empty()) {
    f_service_ << "import " << package_name_ << ".*;" << endl;
  }

  generate_service_helpers(tservice);

  f_service_.close();

  // Now make the processor/server file
  f_service_name = package_dir_ + "/" + service_name_ + "Processor.as";
  f_service_.open(f_service_name.c_str());

  f_service_ << autogen_comment() << as3_package();

  scope_up(f_service_);

  f_service_ << endl << as3_type_imports() << as3_thrift_imports()
             << as3_thrift_gen_imports(tservice) << endl;

  generate_service_server(tservice);
  scope_down(f_service_);

  f_service_ << as3_type_imports();
  f_service_ << as3_thrift_imports();
  f_service_ << as3_thrift_gen_imports(tservice) << endl;
  if (!package_name_.empty()) {
    f_service_ << "import " << package_name_ << ".*;" << endl;
  }

  generate_service_helpers(tservice);

  f_service_.close();
}

/**
 * Generates a service interface definition.
 *
 * @param tservice The service to generate a header definition for
 */
void t_as3_generator::generate_service_interface(t_service* tservice) {
  string extends_iface = "";
  if (tservice->get_extends() != nullptr) {
    extends_iface = " extends " + tservice->get_extends()->get_name();
  }

  generate_as3_doc(f_service_, tservice);
  f_service_ << indent() << "public interface " << service_name_ << extends_iface << " {" << endl
             << endl;
  indent_up();
  vector<t_function*> functions = tservice->get_functions();
  vector<t_function*>::iterator f_iter;
  for (f_iter = functions.begin(); f_iter != functions.end(); ++f_iter) {
    generate_as3_doc(f_service_, *f_iter);
    if (!(*f_iter)->is_oneway()) {
      if ((*f_iter)->get_returntype()->is_void()) {
        indent(f_service_) << "//function onError(Error):void;" << endl;
        indent(f_service_) << "//function onSuccess():void;" << endl;
      } else {
        indent(f_service_) << "//function onError(Error):void;" << endl;
        indent(f_service_) << "//function onSuccess(" << type_name((*f_iter)->get_returntype())
                           << "):void;" << endl;
      }
    }
    indent(f_service_) << function_signature(*f_iter) << ";" << endl << endl;
  }
  indent_down();
  f_service_ << indent() << "}" << endl << endl;
}

/**
 * Generates structs for all the service args and return types
 *
 * @param tservice The service
 */
void t_as3_generator::generate_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_as3_struct_definition(f_service_, ts, false, true);
    generate_function_helpers(*f_iter);
  }
}

/**
 * Generates a service client definition.
 *
 * @param tservice The service to generate a server for.
 */
void t_as3_generator::generate_service_client(t_service* tservice) {
  string extends = "";
  string extends_client = "";
  if (tservice->get_extends() != nullptr) {
    extends = tservice->get_extends()->get_name();
    extends_client = " extends " + extends + "Impl";
  }

  indent(f_service_) << "public class " << service_name_ << "Impl" << extends_client
                     << " implements " << service_name_ << " {" << endl;
  indent_up();

  indent(f_service_) << "public function " << service_name_ << "Impl"
                     << "(iprot:TProtocol, oprot:TProtocol=null)" << endl;
  scope_up(f_service_);
  if (extends.empty()) {
    f_service_ << indent() << "iprot_ = iprot;" << endl;
    f_service_ << indent() << "if (oprot == null) {" << endl;
    indent_up();
    f_service_ << indent() << "oprot_ = iprot;" << endl;
    indent_down();
    f_service_ << indent() << "} else {" << endl;
    indent_up();
    f_service_ << indent() << "oprot_ = oprot;" << endl;
    indent_down();
    f_service_ << indent() << "}";
  } else {
    f_service_ << indent() << "super(iprot, oprot);" << endl;
  }
  scope_down(f_service_);
  f_service_ << endl;

  if (extends.empty()) {
    f_service_ << indent() << "protected var iprot_:TProtocol;" << endl << indent()
               << "protected var oprot_:TProtocol;" << endl << endl << indent()
               << "protected var seqid_:int;" << endl << endl;

    indent(f_service_) << "public function getInputProtocol():TProtocol" << endl;
    scope_up(f_service_);
    indent(f_service_) << "return this.iprot_;" << endl;
    scope_down(f_service_);
    f_service_ << endl;

    indent(f_service_) << "public function getOutputProtocol():TProtocol" << endl;
    scope_up(f_service_);
    indent(f_service_) << "return this.oprot_;" << endl;
    scope_down(f_service_);
    f_service_ << 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) {
    string funname = (*f_iter)->get_name();

    // Open function
    if (!(*f_iter)->is_oneway()) {
      if ((*f_iter)->get_returntype()->is_void()) {
        indent(f_service_) << "//function onError(Error):void;" << endl;
        indent(f_service_) << "//function onSuccess():void;" << endl;
      } else {
        indent(f_service_) << "//function onError(Error):void;" << endl;
        indent(f_service_) << "//function onSuccess(" << type_name((*f_iter)->get_returntype())
                           << "):void;" << endl;
      }
    }
    indent(f_service_) << "public " << function_signature(*f_iter) << endl;
    scope_up(f_service_);

    // Get the struct of function call params
    t_struct* arg_struct = (*f_iter)->get_arglist();

    string argsname = (*f_iter)->get_name() + "_args";
    vector<t_field*>::const_iterator fld_iter;
    const vector<t_field*>& fields = arg_struct->get_members();

    // Serialize the request
    f_service_ << indent() << "oprot_.writeMessageBegin(new TMessage(\"" << funname << "\", "
               << ((*f_iter)->is_oneway() ? "TMessageType.ONEWAY" : "TMessageType.CALL")
               << ", seqid_));" << endl << indent() << "var args:" << argsname << " = new "
               << argsname << "();" << endl;

    for (fld_iter = fields.begin(); fld_iter != fields.end(); ++fld_iter) {
      f_service_ << indent() << "args." << (*fld_iter)->get_name() << " = "
                 << (*fld_iter)->get_name() << ";" << endl;
    }

    f_service_ << indent() << "args.write(oprot_);" << endl << indent()
               << "oprot_.writeMessageEnd();" << endl;

    if ((*f_iter)->is_oneway()) {
      f_service_ << indent() << "oprot_.getTransport().flush();" << endl;
    } else {
      f_service_ << indent() << "oprot_.getTransport().flush(function(error:Error):void {" << endl;
      indent_up();
      f_service_ << indent() << "try {" << endl;
      indent_up();
      string resultname = (*f_iter)->get_name() + "_result";
      f_service_ << indent() << "if (error != null) {" << endl << indent()
                 << "  if (onError != null) onError(error);" << endl << indent() << "  return;"
                 << endl << indent() << "}" << endl << indent()
                 << "var msg:TMessage = iprot_.readMessageBegin();" << endl << indent()
                 << "if (msg.type == TMessageType.EXCEPTION) {" << endl << indent()
                 << "  var x:TApplicationError = TApplicationError.read(iprot_);" << endl
                 << indent() << "  iprot_.readMessageEnd();" << endl << indent()
                 << "  if (onError != null) onError(x);" << endl << indent() << "  return;" << endl
                 << indent() << "}" << endl << indent() << "var result :" << resultname << " = new "
                 << resultname << "();" << endl << indent() << "result.read(iprot_);" << endl
                 << indent() << "iprot_.readMessageEnd();" << endl;

      // Careful, only return _result if not a void function
      if (!(*f_iter)->get_returntype()->is_void()) {
        f_service_ << indent() << "if (result." << generate_isset_check("success") << ") {" << endl
                   << indent() << "  if (onSuccess != null) onSuccess(result.success);" << endl
                   << indent() << "  return;" << endl << indent() << "}" << endl;
      }

      t_struct* xs = (*f_iter)->get_xceptions();
      const std::vector<t_field*>& xceptions = xs->get_members();
      vector<t_field*>::const_iterator x_iter;
      for (x_iter = xceptions.begin(); x_iter != xceptions.end(); ++x_iter) {
        f_service_ << indent() << "if (result." << (*x_iter)->get_name() << " != null) {" << endl
                   << indent() << "  if (onError != null) onError(result." << (*x_iter)->get_name()
                   << ");" << endl << indent() << "  return;" << endl << indent() << "}" << endl;
      }

      // If you get here it's an exception, unless a void function
      if ((*f_iter)->get_returntype()->is_void()) {
        f_service_ << indent() << "if (onSuccess != null) onSuccess();" << endl << indent()
                   << "return;" << endl;
      } else {

        f_service_ << indent() << "if (onError != null) onError(new "
                                  "TApplicationError(TApplicationError.MISSING_RESULT, \""
                   << (*f_iter)->get_name() << " failed: unknown result\"));" << endl;
      }
      indent_down();
      f_service_ << indent() << "} catch (e:TError) {" << endl << indent()
                 << "  if (onError != null) onError(e);" << endl << indent() << "}" << endl;

      indent_down();
      indent(f_service_) << "});" << endl;
    }
    // Close function
    scope_down(f_service_);
    f_service_ << endl;
  }

  indent_down();
  indent(f_service_) << "}" << endl;
}

/**
 * Generates a service server definition.
 *
 * @param tservice The service to generate a server for.
 */
void t_as3_generator::generate_service_server(t_service* tservice) {
  // Generate the dispatch methods
  vector<t_function*> functions = tservice->get_functions();
  vector<t_function*>::iterator f_iter;

  // Extends stuff
  string extends = "";
  string extends_processor = "";
  if (tservice->get_extends() != nullptr) {
    extends = type_name(tservice->get_extends());
    extends_processor = " extends " + extends + "Processor";
  }

  // Generate the header portion
  indent(f_service_) << "public class " << service_name_ << "Processor" << extends_processor
                     << " implements TProcessor {" << endl;
  indent_up();

  indent(f_service_) << "public function " << service_name_ << "Processor(iface:" << service_name_
                     << ")" << endl;
  scope_up(f_service_);
  if (!extends.empty()) {
    f_service_ << indent() << "super(iface);" << endl;
  }
  f_service_ << indent() << "iface_ = iface;" << endl;

  for (f_iter = functions.begin(); f_iter != functions.end(); ++f_iter) {
    f_service_ << indent() << "PROCESS_MAP[\"" << (*f_iter)->get_name()
               << "\"] = " << (*f_iter)->get_name() << "();" << endl;
  }

  scope_down(f_service_);
  f_service_ << endl;

  f_service_ << indent() << "private var iface_:" << service_name_ << ";" << endl;

  if (extends.empty()) {
    f_service_ << indent() << "protected const PROCESS_MAP:Dictionary = new Dictionary();" << endl;
  }

  f_service_ << endl;

  // Generate the server implementation
  string override = "";
  if (tservice->get_extends() != nullptr) {
    override = "override ";
  }
  indent(f_service_) << override
                     << "public function process(iprot:TProtocol, oprot:TProtocol):Boolean" << endl;
  scope_up(f_service_);

  f_service_ << indent() << "var msg:TMessage = iprot.readMessageBegin();" << endl;

  // TODO(mcslee): validate message, was the seqid etc. legit?
  // AS- If all method is oneway:
  // do you have an oprot?
  // do you you need nullcheck?
  f_service_
      << indent() << "var fn:Function = PROCESS_MAP[msg.name];" << endl << indent()
      << "if (fn == null) {" << endl << indent() << "  TProtocolUtil.skip(iprot, TType.STRUCT);"
      << endl << indent() << "  iprot.readMessageEnd();" << endl << indent()
      << "  var x:TApplicationError = new TApplicationError(TApplicationError.UNKNOWN_METHOD, "
         "\"Invalid method name: '\"+msg.name+\"'\");" << endl << indent()
      << "  oprot.writeMessageBegin(new TMessage(msg.name, TMessageType.EXCEPTION, msg.seqid));"
      << endl << indent() << "  x.write(oprot);" << endl << indent() << "  oprot.writeMessageEnd();"
      << endl << indent() << "  oprot.getTransport().flush();" << endl << indent()
      << "  return true;" << endl << indent() << "}" << endl << indent()
      << "fn.call(this,msg.seqid, iprot, oprot);" << endl;

  f_service_ << indent() << "return true;" << endl;

  scope_down(f_service_);
  f_service_ << endl;

  // Generate the process subfunctions
  for (f_iter = functions.begin(); f_iter != functions.end(); ++f_iter) {
    generate_process_function(tservice, *f_iter);
  }

  indent_down();
  indent(f_service_) << "}" << endl << endl;
}

/**
 * Generates a struct and helpers for a function.
 *
 * @param tfunction The function
 */
void t_as3_generator::generate_function_helpers(t_function* tfunction) {
  if (tfunction->is_oneway()) {
    return;
  }

  t_struct result(program_, tfunction->get_name() + "_result");
  t_field success(tfunction->get_returntype(), "success", 0);
  if (!tfunction->get_returntype()->is_void()) {
    result.append(&success);
  }

  t_struct* xs = tfunction->get_xceptions();
  const vector<t_field*>& fields = xs->get_members();
  vector<t_field*>::const_iterator f_iter;
  for (f_iter = fields.begin(); f_iter != fields.end(); ++f_iter) {
    result.append(*f_iter);
  }

  generate_as3_struct_definition(f_service_, &result, false, true, true);
}

/**
 * Generates a process function definition.
 *
 * @param tfunction The function to write a dispatcher for
 */
void t_as3_generator::generate_process_function(t_service* tservice, t_function* tfunction) {
  (void)tservice;
  // Open class
  indent(f_service_) << "private function " << tfunction->get_name() << "():Function {" << endl;
  indent_up();

  // Open function
  indent(f_service_) << "return function(seqid:int, iprot:TProtocol, oprot:TProtocol):void" << endl;
  scope_up(f_service_);

  string argsname = tfunction->get_name() + "_args";
  string resultname = tfunction->get_name() + "_result";

  f_service_ << indent() << "var args:" << argsname << " = new " << argsname << "();" << endl
             << indent() << "args.read(iprot);" << endl << indent() << "iprot.readMessageEnd();"
             << endl;

  t_struct* xs = tfunction->get_xceptions();
  const std::vector<t_field*>& xceptions = xs->get_members();
  vector<t_field*>::const_iterator x_iter;

  // Declare result for non oneway function
  if (!tfunction->is_oneway()) {
    f_service_ << indent() << "var result:" << resultname << " = new " << resultname << "();"
               << endl;
  }

  // Try block for a function with exceptions
  if (xceptions.size() > 0) {
    f_service_ << indent() << "try {" << endl;
    indent_up();
  }

  // Generate the function call
  t_struct* arg_struct = tfunction->get_arglist();
  const std::vector<t_field*>& fields = arg_struct->get_members();
  vector<t_field*>::const_iterator f_iter;

  f_service_ << indent();
  if (tfunction->is_oneway()) {
    f_service_ << "iface_." << tfunction->get_name() << "(";
    bool first = true;
    for (f_iter = fields.begin(); f_iter != fields.end(); ++f_iter) {
      if (first) {
        first = false;
      } else {
        f_service_ << ", ";
      }
      f_service_ << "args." << (*f_iter)->get_name();
    }
    f_service_ << ");" << endl;
  } else {
    f_service_ << "// sorry this operation is not supported yet" << endl;
    f_service_ << indent() << "throw new Error(\"This is not yet supported\");" << endl;
  }

  // Set isset on success field
  if (!tfunction->is_oneway() && !tfunction->get_returntype()->is_void()
      && !type_can_be_null(tfunction->get_returntype())) {
    f_service_ << indent() << "result.set" << get_cap_name("success") << get_cap_name("isSet")
               << "(true);" << endl;
  }

  if (!tfunction->is_oneway() && xceptions.size() > 0) {
    indent_down();
    f_service_ << indent() << "}";
    for (x_iter = xceptions.begin(); x_iter != xceptions.end(); ++x_iter) {
      f_service_ << " catch (" << (*x_iter)->get_name() << ":"
                 << type_name((*x_iter)->get_type(), false, false) << ") {" << endl;
      if (!tfunction->is_oneway()) {
        indent_up();
        f_service_ << indent() << "result." << (*x_iter)->get_name() << " = "
                   << (*x_iter)->get_name() << ";" << endl;
        indent_down();
        f_service_ << indent() << "}";
      } else {
        f_service_ << "}";
      }
    }
    f_service_ << " catch (th:Error) {" << endl;
    indent_up();
    f_service_ << indent() << "trace(\"Internal error processing " << tfunction->get_name()
               << "\", th);" << endl << indent()
               << "var x:TApplicationError = new "
                  "TApplicationError(TApplicationError.INTERNAL_ERROR, \"Internal error processing "
               << tfunction->get_name() << "\");" << endl << indent()
               << "oprot.writeMessageBegin(new TMessage(\"" << tfunction->get_name()
               << "\", TMessageType.EXCEPTION, seqid));" << endl << indent() << "x.write(oprot);"
               << endl << indent() << "oprot.writeMessageEnd();" << endl << indent()
               << "oprot.getTransport().flush();" << endl << indent() << "return;" << endl;
    indent_down();
    f_service_ << indent() << "}" << endl;
  }

  // Shortcut out here for oneway functions
  if (tfunction->is_oneway()) {
    f_service_ << indent() << "return;" << endl;
    scope_down(f_service_);

    // Close class
    indent_down();
    f_service_ << indent() << "}" << endl << endl;
    return;
  }

  f_service_ << indent() << "oprot.writeMessageBegin(new TMessage(\"" << tfunction->get_name()
             << "\", TMessageType.REPLY, seqid));" << endl << indent() << "result.write(oprot);"
             << endl << indent() << "oprot.writeMessageEnd();" << endl << indent()
             << "oprot.getTransport().flush();" << endl;

  // Close function
  scope_down(f_service_);
  f_service_ << endl;

  // Close class
  indent_down();
  f_service_ << indent() << "}" << endl << endl;
}

/**
 * Deserializes a field of any type.
 *
 * @param tfield The field
 * @param prefix The variable name or container for this field
 */
void t_as3_generator::generate_deserialize_field(ostream& out, t_field* tfield, string prefix) {
  t_type* type = get_true_type(tfield->get_type());

  if (type->is_void()) {
    throw "CANNOT GENERATE DESERIALIZE CODE FOR void TYPE: " + prefix + tfield->get_name();
  }

  string name = prefix + tfield->get_name();

  if (type->is_struct() || type->is_xception()) {
    generate_deserialize_struct(out, (t_struct*)type, name);
  } else if (type->is_container()) {
    generate_deserialize_container(out, type, name);
  } else if (type->is_base_type() || type->is_enum()) {

    indent(out) << name << " = iprot.";

    if (type->is_base_type()) {
      t_base_type::t_base tbase = ((t_base_type*)type)->get_base();
      switch (tbase) {
      case t_base_type::TYPE_VOID:
        throw "compiler error: cannot serialize void field in a struct: " + name;
        break;
      case t_base_type::TYPE_STRING:
        if (type->is_binary()) {
          out << "readBinary();";
        } else {
          out << "readString();";
        }
        break;
      case t_base_type::TYPE_BOOL:
        out << "readBool();";
        break;
      case t_base_type::TYPE_I8:
        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 As3 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, invokes read()
 */
void t_as3_generator::generate_deserialize_struct(ostream& out, t_struct* tstruct, string prefix) {
  out << indent() << prefix << " = new " << type_name(tstruct) << "();" << endl << indent()
      << prefix << ".read(iprot);" << endl;
}

/**
 * Deserializes a container by reading its size and then iterating
 */
void t_as3_generator::generate_deserialize_container(ostream& out, t_type* ttype, string prefix) {
  scope_up(out);

  string obj;

  if (ttype->is_map()) {
    obj = tmp("_map");
  } else if (ttype->is_set()) {
    obj = tmp("_set");
  } else if (ttype->is_list()) {
    obj = tmp("_list");
  }

  // Declare variables, read header
  if (ttype->is_map()) {
    indent(out) << "var " << obj << ":TMap = iprot.readMapBegin();" << endl;
  } else if (ttype->is_set()) {
    indent(out) << "var " << obj << ":TSet = iprot.readSetBegin();" << endl;
  } else if (ttype->is_list()) {
    indent(out) << "var " << obj << ":TList = iprot.readListBegin();" << endl;
  }

  indent(out) << prefix << " = new " << type_name(ttype, false, true)
              // size the collection correctly
              << "("
              << ");" << endl;

  // For loop iterates over elements
  string i = tmp("_i");
  indent(out) << "for (var " << i << ":int = 0; " << i << " < " << obj << ".size"
              << "; "
              << "++" << i << ")" << endl;

  scope_up(out);

  if (ttype->is_map()) {
    generate_deserialize_map_element(out, (t_map*)ttype, prefix);
  } else if (ttype->is_set()) {
    generate_deserialize_set_element(out, (t_set*)ttype, prefix);
  } else if (ttype->is_list()) {
    generate_deserialize_list_element(out, (t_list*)ttype, prefix);
  }

  scope_down(out);

  // Read container end
  if (ttype->is_map()) {
    indent(out) << "iprot.readMapEnd();" << endl;
  } else if (ttype->is_set()) {
    indent(out) << "iprot.readSetEnd();" << endl;
  } else if (ttype->is_list()) {
    indent(out) << "iprot.readListEnd();" << endl;
  }

  scope_down(out);
}

/**
 * Generates code to deserialize a map
 */
void t_as3_generator::generate_deserialize_map_element(ostream& out, t_map* tmap, string prefix) {
  string key = tmp("_key");
  string val = tmp("_val");
  t_field fkey(tmap->get_key_type(), key);
  t_field fval(tmap->get_val_type(), val);

  indent(out) << declare_field(&fkey) << endl;
  indent(out) << declare_field(&fval) << endl;

  generate_deserialize_field(out, &fkey);
  generate_deserialize_field(out, &fval);

  indent(out) << prefix << "[" << key << "] = " << val << ";" << endl;
}

/**
 * Deserializes a set element
 */
void t_as3_generator::generate_deserialize_set_element(ostream& out, t_set* tset, string prefix) {
  string elem = tmp("_elem");
  t_field felem(tset->get_elem_type(), elem);

  indent(out) << declare_field(&felem) << endl;

  generate_deserialize_field(out, &felem);

  indent(out) << prefix << ".add(" << elem << ");" << endl;
}

/**
 * Deserializes a list element
 */
void t_as3_generator::generate_deserialize_list_element(ostream& out,
                                                        t_list* tlist,
                                                        string prefix) {
  string elem = tmp("_elem");
  t_field felem(tlist->get_elem_type(), elem);

  indent(out) << declare_field(&felem) << endl;

  generate_deserialize_field(out, &felem);

  indent(out) << prefix << ".push(" << elem << ");" << endl;
}

/**
 * Serializes a field of any type.
 *
 * @param tfield The field to serialize
 * @param prefix Name to prepend to field name
 */
void t_as3_generator::generate_serialize_field(ostream& out, t_field* tfield, string prefix) {
  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: " + prefix + tfield->get_name();
  }

  if (type->is_struct() || type->is_xception()) {
    generate_serialize_struct(out, (t_struct*)type, prefix + tfield->get_name());
  } else if (type->is_container()) {
    generate_serialize_container(out, type, prefix + tfield->get_name());
  } else if (type->is_base_type() || type->is_enum()) {

    string name = prefix + tfield->get_name();
    indent(out) << "oprot.";

    if (type->is_base_type()) {
      t_base_type::t_base tbase = ((t_base_type*)type)->get_base();
      switch (tbase) {
      case t_base_type::TYPE_VOID:
        throw "compiler error: cannot serialize void field in a struct: " + name;
        break;
      case t_base_type::TYPE_STRING:
        if (type->is_binary()) {
          out << "writeBinary(" << name << ");";
        } else {
          out << "writeString(" << name << ");";
        }
        break;
      case t_base_type::TYPE_BOOL:
        out << "writeBool(" << name << ");";
        break;
      case t_base_type::TYPE_I8:
        out << "writeByte(" << name << ");";
        break;
      case t_base_type::TYPE_I16:
        out << "writeI16(" << name << ");";
        break;
      case t_base_type::TYPE_I32:
        out << "writeI32(" << name << ");";
        break;
      case t_base_type::TYPE_I64:
        out << "writeI64(" << name << ");";
        break;
      case t_base_type::TYPE_DOUBLE:
        out << "writeDouble(" << name << ");";
        break;
      default:
        throw "compiler error: no As3 name for base type " + t_base_type::t_base_name(tbase);
      }
    } else if (type->is_enum()) {
      out << "writeI32(" << name << ");";
    }
    out << endl;
  } else {
    printf("DO NOT KNOW HOW TO SERIALIZE FIELD '%s%s' TYPE '%s'\n",
           prefix.c_str(),
           tfield->get_name().c_str(),
           type_name(type).c_str());
  }
}

/**
 * Serializes all the members of a struct.
 *
 * @param tstruct The struct to serialize
 * @param prefix  String prefix to attach to all fields
 */
void t_as3_generator::generate_serialize_struct(ostream& out, t_struct* tstruct, string prefix) {
  (void)tstruct;
  out << indent() << prefix << ".write(oprot);" << endl;
}

/**
 * Serializes a container by writing its size then the elements.
 *
 * @param ttype  The type of container
 * @param prefix String prefix for fields
 */
void t_as3_generator::generate_serialize_container(ostream& out, t_type* ttype, string prefix) {
  scope_up(out);

  if (ttype->is_map()) {
    string iter = tmp("_key");
    string counter = tmp("_sizeCounter");
    indent(out) << "var " << counter << ":int = 0;" << endl;
    indent(out) << "for (var " << iter << ":* in " << prefix << ") {" << endl;
    indent(out) << "  " << counter << +"++;" << endl;
    indent(out) << "}" << endl;

    indent(out) << "oprot.writeMapBegin(new TMap(" << type_to_enum(((t_map*)ttype)->get_key_type())
                << ", " << type_to_enum(((t_map*)ttype)->get_val_type()) << ", " << counter << "));"
                << endl;
  } else if (ttype->is_set()) {
    indent(out) << "oprot.writeSetBegin(new TSet(" << type_to_enum(((t_set*)ttype)->get_elem_type())
                << ", " << prefix << ".size));" << endl;
  } else if (ttype->is_list()) {
    indent(out) << "oprot.writeListBegin(new TList("
                << type_to_enum(((t_list*)ttype)->get_elem_type()) << ", " << prefix << ".length));"
                << endl;
  }

  string iter = tmp("elem");
  if (ttype->is_map()) {
    indent(out) << "for (var " << iter << ":* in " << prefix << ")";
  } else if (ttype->is_set()) {
    indent(out) << "for each (var " << iter << ":* in " << prefix << ".toArray())";
  } else if (ttype->is_list()) {
    indent(out) << "for each (var " << iter << ":* in " << prefix << ")";
  }

  scope_up(out);

  if (ttype->is_map()) {
    generate_serialize_map_element(out, (t_map*)ttype, iter, prefix);
  } else if (ttype->is_set()) {
    generate_serialize_set_element(out, (t_set*)ttype, iter);
  } else if (ttype->is_list()) {
    generate_serialize_list_element(out, (t_list*)ttype, iter);
  }

  scope_down(out);

  if (ttype->is_map()) {
    indent(out) << "oprot.writeMapEnd();" << endl;
  } else if (ttype->is_set()) {
    indent(out) << "oprot.writeSetEnd();" << endl;
  } else if (ttype->is_list()) {
    indent(out) << "oprot.writeListEnd();" << endl;
  }

  scope_down(out);
}

/**
 * Serializes the members of a map.
 */
void t_as3_generator::generate_serialize_map_element(ostream& out,
                                                     t_map* tmap,
                                                     string iter,
                                                     string map) {
  t_field kfield(tmap->get_key_type(), iter);
  generate_serialize_field(out, &kfield, "");
  t_field vfield(tmap->get_val_type(), map + "[" + iter + "]");
  generate_serialize_field(out, &vfield, "");
}

/**
 * Serializes the members of a set.
 */
void t_as3_generator::generate_serialize_set_element(ostream& out, t_set* tset, string iter) {
  t_field efield(tset->get_elem_type(), iter);
  generate_serialize_field(out, &efield, "");
}

/**
 * Serializes the members of a list.
 */
void t_as3_generator::generate_serialize_list_element(ostream& out, t_list* tlist, string iter) {
  t_field efield(tlist->get_elem_type(), iter);
  generate_serialize_field(out, &efield, "");
}

/**
 * Returns a As3 type name
 *
 * @param ttype The type
 * @param container Is the type going inside a container?
 * @return As3 type name, i.e. HashMap<Key,Value>
 */
string t_as3_generator::type_name(t_type* ttype, bool in_container, bool in_init) {
  (void)in_init;
  // In As3 typedefs are just resolved to their real type
  ttype = get_true_type(ttype);
  string prefix;

  if (ttype->is_base_type()) {
    return base_type_name((t_base_type*)ttype, in_container);
  } else if (ttype->is_enum()) {
    return "int";
  } else if (ttype->is_map()) {
    return "Dictionary";
  } else if (ttype->is_set()) {
    return "Set";
  } else if (ttype->is_list()) {
    return "Array";
  }

  // Check for namespacing
  t_program* program = ttype->get_program();
  if (program != nullptr && program != program_) {
    string package = program->get_namespace("as3");
    if (!package.empty()) {
      return package + "." + ttype->get_name();
    }
  }

  return ttype->get_name();
}

/**
 * Returns the AS3 type that corresponds to the thrift type.
 *
 * @param tbase The base type
 * @param container Is it going in a As3 container?
 */
string t_as3_generator::base_type_name(t_base_type* type, bool in_container) {
  (void)in_container;
  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 "ByteArray";
    } else {
      return "String";
    }
  case t_base_type::TYPE_BOOL:
    return "Boolean";
  case t_base_type::TYPE_I8:
  case t_base_type::TYPE_I16:
  case t_base_type::TYPE_I32:
    return "int";
  case t_base_type::TYPE_I64:
    throw "i64 is not yet supported in as3";
  case t_base_type::TYPE_DOUBLE:
    return "Number";
  default:
    throw "compiler error: no As3 name for base type " + t_base_type::t_base_name(tbase);
  }
}

/**
 * Declares a field, which may include initialization as necessary.
 *
 * @param ttype The type
 */
string t_as3_generator::declare_field(t_field* tfield, bool init) {
  // TODO(mcslee): do we ever need to initialize the field?
  string result = "var " + tfield->get_name() + ":" + type_name(tfield->get_type());
  if (init) {
    t_type* ttype = get_true_type(tfield->get_type());
    if (ttype->is_base_type() && tfield->get_value() != nullptr) {
      std::ofstream dummy;
      result += " = " + render_const_value(dummy, tfield->get_name(), ttype, tfield->get_value());
    } 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 "NO T_VOID CONSTRUCT";
      case t_base_type::TYPE_STRING:
        result += " = null";
        break;
      case t_base_type::TYPE_BOOL:
        result += " = 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:
        result += " = 0";
        break;
      case t_base_type::TYPE_DOUBLE:
        result += " = (double)0";
        break;
      }

    } else if (ttype->is_enum()) {
      result += " = 0";
    } else if (ttype->is_container()) {
      result += " = new " + type_name(ttype, false, true) + "()";
    } else {
      result += " = new " + type_name(ttype, false, true) + "()";
      ;
    }
  }
  return result + ";";
}

/**
 * Renders a function signature of the form 'type name(args)'
 *
 * @param tfunction Function definition
 * @return String of rendered function definition
 */
string t_as3_generator::function_signature(t_function* tfunction, string prefix) {
  std::string arguments = argument_list(tfunction->get_arglist());
  if (!tfunction->is_oneway()) {
    if (arguments != "") {
      arguments += ", ";
    }
    arguments += "onError:Function, onSuccess:Function";
  }

  std::string result = "function " + prefix + tfunction->get_name() + "(" + arguments + "):void";
  return result;
}

/**
 * Renders a comma separated field list, with type names
 */
string t_as3_generator::argument_list(t_struct* tstruct) {
  string result = "";

  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;
    } else {
      result += ", ";
    }
    result += (*f_iter)->get_name() + ":" + type_name((*f_iter)->get_type());
  }
  return result;
}

/**
 * Converts the parse type to a C++ enum string for the given type.
 */
string t_as3_generator::type_to_enum(t_type* type) {
  type = get_true_type(type);

  if (type->is_base_type()) {
    t_base_type::t_base tbase = ((t_base_type*)type)->get_base();
    switch (tbase) {
    case t_base_type::TYPE_VOID:
      throw "NO T_VOID CONSTRUCT";
    case t_base_type::TYPE_STRING:
      return "TType.STRING";
    case t_base_type::TYPE_BOOL:
      return "TType.BOOL";
    case t_base_type::TYPE_I8:
      return "TType.BYTE";
    case t_base_type::TYPE_I16:
      return "TType.I16";
    case t_base_type::TYPE_I32:
      return "TType.I32";
    case t_base_type::TYPE_I64:
      return "TType.I64";
    case t_base_type::TYPE_DOUBLE:
      return "TType.DOUBLE";
    }
  } else if (type->is_enum()) {
    return "TType.I32";
  } else if (type->is_struct() || type->is_xception()) {
    return "TType.STRUCT";
  } else if (type->is_map()) {
    return "TType.MAP";
  } else if (type->is_set()) {
    return "TType.SET";
  } else if (type->is_list()) {
    return "TType.LIST";
  }

  throw "INVALID TYPE IN type_to_enum: " + type->get_name();
}

/**
 * Applies the correct style to a string based on the value of nocamel_style_
 */
std::string t_as3_generator::get_cap_name(std::string name) {
  name[0] = toupper(name[0]);
  return name;
}

string t_as3_generator::constant_name(string name) {
  string constant_name;

  bool is_first = true;
  bool was_previous_char_upper = false;
  for (char character : name) {
    bool is_upper = isupper(character);

    if (is_upper && !is_first && !was_previous_char_upper) {
      constant_name += '_';
    }
    constant_name += toupper(character);

    is_first = false;
    was_previous_char_upper = is_upper;
  }

  return constant_name;
}

/**
 * Emits a As3Doc comment if the provided object has a doc in Thrift
 */
void t_as3_generator::generate_as3_doc(ostream& out, t_doc* tdoc) {
  if (tdoc->has_doc()) {
    generate_docstring_comment(out, "/**\n", " * ", tdoc->get_doc(), " */\n");
  }
}

/**
 * Emits a As3Doc comment if the provided function object has a doc in Thrift
 */
void t_as3_generator::generate_as3_doc(ostream& out, t_function* tfunction) {
  if (tfunction->has_doc()) {
    stringstream ss;
    ss << tfunction->get_doc();
    const vector<t_field*>& fields = tfunction->get_arglist()->get_members();
    vector<t_field*>::const_iterator p_iter;
    for (p_iter = fields.begin(); p_iter != fields.end(); ++p_iter) {
      t_field* p = *p_iter;
      ss << "\n@param " << p->get_name();
      if (p->has_doc()) {
        ss << " " << p->get_doc();
      }
    }
    generate_docstring_comment(out, "/**\n", " * ", ss.str(), " */\n");
  }
}

std::string t_as3_generator::generate_isset_check(t_field* field) {
  return generate_isset_check(field->get_name());
}

std::string t_as3_generator::generate_isset_check(std::string field_name) {
  return "is" + get_cap_name("set") + get_cap_name(field_name) + "()";
}

void t_as3_generator::generate_isset_set(ostream& out, t_field* field) {
  if (!type_can_be_null(field->get_type())) {
    indent(out) << "this.__isset_" << field->get_name() << " = true;" << endl;
  }
}

std::string t_as3_generator::get_enum_class_name(t_type* type) {
  string package = "";
  t_program* program = type->get_program();
  if (program != nullptr && program != program_) {
    package = program->get_namespace("as3") + ".";
  }
  return package + type->get_name();
}

THRIFT_REGISTER_GENERATOR(
    as3,
    "AS3",
    "    bindable:        Add [bindable] metadata to all the struct classes.\n")
