{% macro decl_units(meta) %}
  {%- for u in meta.getunits ~%}
    {%- if u.object is instanceof('\\mtgMetaStruct') ~%}
    {{ _self.decl_struct(meta, u.object) }}
    {%- elseif u.object is instanceof('\\mtgMetaEnum') ~%}
    {{ _self.decl_enum(u.object) }}
    {%- elseif u.object is instanceof('\\mtgMetaRPC') ~%}
    {{ _self.decl_rpc(meta, u.object) }}
    {%- endif ~%}
  {%- endfor ~%}
{% endmacro %}

{% macro decl_struct(meta, o) %}
{%- if o.parent and has_token(o, 'POD') -%}
{{Error("@POD structs can't have a parent: " ~ o.name)}}
{%- endif -%}
{%- if o.parent and has_token(o, 'bitfields') -%}
{{Error("@bitfields structs can't have a parent: " ~ o.name)}}
{%- endif ~%}

//==============================
type {{o.name}} struct {
{% if o.parent %}
{{o.parent.name}}
{% endif %}

{{_self.decl_struct_fields(o)}}
}

var _{{o.name}}_class_props map[string]string = {{_self.props_map(o.tokens)}}
var _{{o.name}}_class_fields []string = {{_self.struct_fields_names(meta, o)}}
var _{{o.name}}_fields_props meta.ClassFieldsProps = {{_self.struct_fields_props(meta, o)}}

func {{o.name}}_CLASS_ID() uint32 {
  return {{o.classid}}
}

type I{{o.name}} interface {
  meta.IMetaStruct
  Ptr{{o.name}}() *{{o.name}}
}

func (*{{o.name}}) CLASS_ID() uint32 {
  return {{o.classid}}
}

func (*{{o.name}}) CLASS_NAME() string {
  return "{{o.name}}"
}

func (*{{o.name}}) CLASS_PROPS() *map[string]string {
  return &_{{o.name}}_class_props
}

func (*{{o.name}}) CLASS_FIELDS() []string {
  return _{{o.name}}_class_fields
}

func (*{{o.name}}) CLASS_FIELDS_PROPS() *meta.ClassFieldsProps {
  return &_{{o.name}}_fields_props
}

//convenience getter
func Ptr{{o.name}}(m meta.IMetaStruct) *{{o.name}} {
  p, ok := m.(I{{o.name}})
  if !ok {
    return nil
  }
  return p.Ptr{{o.name}}()
}

func (self *{{o.name}}) Ptr{{o.name}}() *{{o.name}} {
  return self
}

func New{{o.name}}() *{{o.name}} {
  item := new ({{o.name}})
  item.Reset()
  return item
}

func (self *{{o.name}}) Reset() {
  {{_self.struct_reset_fields(o)}}
}

func (self *{{o.name}}) Read(reader meta.Reader) error {
  return meta.ReadStruct(reader, self, "")
}

func (self *{{o.name}}) ReadFields(reader meta.Reader) error {
  self.Reset()

  {{_self.struct_read_fields(o)}}

  return nil
}

func (self *{{o.name}}) Write(writer meta.Writer) error {
  return meta.WriteStruct(writer, self, "")
}

func (self *{{o.name}}) WriteFields(writer meta.Writer) error {
  
  {{_self.struct_write_fields(o)}}

  return nil
}

{% if has_token(o, 'bitfields') %}
{{_self.bitfields_methods(o)}}
{% endif %}

{% if has_token(o, 'statist') %}
{{_self.stats_methods(meta, o)}}
{% endif %}

{% if has_token(o, 'POD') and has_token(o, 'id') and has_token(o, 'table') and has_token(o, 'owner') %}
{{_self.db_item_methods(meta, o)}}
{% endif %}

{% endmacro %}

{% macro props_map(tokens) %}
map[string]string{
{% for k,v in tokens %}
  "{{k}}" : "{{v|replace({'"' : '\\"'})}}",
{%- endfor ~%}
}
{% endmacro %}

{% macro struct_fields_names(meta, o) %}
[]string{
{% for f in get_all_fields(meta, o) ~%}
"{{f.name}}",
{%- endfor ~%}
}
{% endmacro %}

{% macro struct_fields_props(meta, o) %}
map[string]map[string]string{
{% for f in get_all_fields(meta, o) ~%}
"{{f.name|ucfirst}}"  : {{_self.props_map(f.tokens)}},
{%- endfor ~%}
}
{% endmacro %}

{% macro decl_struct_fields(o) %}
{%- for f in o.fields ~%}
{{f.name|ucfirst}} {{f.type|go_type(f.tokens)}} {{f.name|first != '_' ? '`json:"' ~ f.name ~ '"`'}} 
{%- endfor ~%}

{%if has_token(o, 'bitfields') %}
fieldsMask meta.FieldsMask //@bitfields support
{%- endif ~%}

{% endmacro %}

{% macro struct_reset_fields(o) %}

{%- if o.parent ~%}
  self.{{o.parent.name}}.Reset()
{%- endif ~%}

{%- for f in o.fields ~%}
{{field_reset(f.name|ucfirst, f.type, f.tokens)}}
{%- endfor ~%}

{%if has_token(o, 'bitfields') %}
self.fieldsMask = meta.FieldsMask{}
{%- endif ~%}

{% endmacro %}

{% macro struct_read_fields(o) %}

{%if has_token(o, 'bitfields') %}
  use_mask, mask, err := reader.TryReadMask()
  if err != nil {
   return err
  }
  self.fieldsMask = mask
{%- endif ~%}

  _cont_size, err := reader.GetContainerSize()
  if err != nil {
    return err
  }

  if _cont_size < {{o.fields|length - count_optional(o.fields)}} {
    _cont_size = {{o.fields|length - count_optional(o.fields)}}
  }

{%- if o.parent ~%}
  if err := self.{{o.parent.name}}.ReadFields(reader); err != nil { return err }
{%- endif ~%}

{%- for f in o.fields ~%}
  if _cont_size <= 0 {
   return nil
  }

  {%if has_token(o, 'bitfields') ~%}
  if !use_mask {
  {%- endif ~%}

  _cont_size--

  {%if has_token(o, 'bitfields') ~%}
  }
  if !use_mask || (use_mask && self.HasValue({{loop.index0}})) {
  {%- endif ~%}

  {{buf2var(f.name, 'self.' ~ f.name|ucfirst, f.type, 'reader', f.tokens, false)}}

  {%if has_token(o, 'bitfields') ~%}
  }
  {%- endif -%}

{%- endfor -%}

{% endmacro %}

{% macro struct_write_fields(o) %}

{%- if o.parent ~%}
  if err := self.{{o.parent.name}}.WriteFields(writer); err != nil { return err }
{%- endif ~%}

{%- for f in o.fields ~%}
  {{var2buf(f.name, 'self.' ~ f.name|ucfirst, f.type, "writer", f.tokens, has_token(f, 'virtual'))}}
{%- endfor -%}

{% endmacro %}

{% macro bitfields_methods(o) %}
func(self *{{o.name}}) HasValue(index uint64) bool {
  return self.fieldsMask.FieldChanged(index)
}

func(self *{{o.name}}) SetFieldChanged(index uint64) {
  self.fieldsMask.SetFieldChanged(index)
}

func(self *{{o.name}}) IsMaskFilled() bool {
  return self.fieldsMask.IsFilled()
}

func(self *{{o.name}}) GetMask() meta.FieldsMask {
  return self.fieldsMask
}
{% endmacro %}

{% macro stats_methods(meta, o) %}

func (self *{{o.name}}) Table() string {
  return "{{token(o, 'statist')}}"
}

func (self * {{o.name}}) Columns() []string {
  return []string{
  {%- for f in get_all_fields(meta, o) ~%}
  {%- if not has_token(f, 'statist_skip') ~%}
  "{{token_or(f, 'statist_alias', f.name)}}",
  {%- endif ~%}
  {%- endfor ~%}
  }
}

func (self *{{o.name}}) Values() []interface{} {
  return []interface{}{
  {%- for f in get_all_fields(meta, o) ~%}
  {%- if not has_token(f, 'statist_skip') ~%}
    self.{{f.name|ucfirst}},
  {%- endif ~%}
  {%- endfor ~%}
  }
}

{% endmacro %}

{% macro db_item_methods(meta, o) %}

func (self *{{o.name}}) NewInstance() meta.IMetaDataItem {
  return New{{o.name}}()
}

func (self *{{o.name}}) GetDbTableName() string {
  return "{{token(o, 'table')}}"
}

func (self *{{o.name}}) GetDbFields() []string {
  return self.CLASS_FIELDS()
}

func (self *{{o.name}}) GetOwnerFieldName() string {
  return "{{token(o, 'owner')}}"
}

func (self *{{o.name}}) GetIdFieldName() string {
  return "{{token(o, 'id')}}"
}

func (self *{{o.name}}) GetIdValue() uint64 {
  return uint64(self.{{token(o, 'id')|ucfirst}})
}

func (self *{{o.name}}) Import(data interface{}) {
  switch data.(type) {
    case {{o.name}}:
    {
      row := data.({{o.name}})
{%- for f in get_all_fields(meta, o) ~%}
      self.{{f.name|ucfirst}} = row.{{f.name|ucfirst}}
{%- endfor ~%}
      break
    }
    default:
      break
  }
}

func (self *{{o.name}}) Export(data []interface{}) {
{%- for f in get_all_fields(meta, o) ~%}
  data[{{loop.index0}}] = self.{{f.name|ucfirst}}
{%- endfor ~%}
}
{% endmacro %}

{% macro decl_enum(o) %}

//==============================
const (
{{_self.enum_consts(o)}}
)
type {{o.name}} int32
var _{{o.name}}_values []int = []int{ {{_self.enum_values_list(o)}} }
var _{{o.name}}_map map[string]{{o.name}}
func init() {
_{{o.name}}_map = map[string]{{o.name}}{ {{_self.enum_values_map(o)}} }
}
func (*{{o.name}}) CLASS_ID() uint32 {
  return {{o.classid}}
}
func (*{{o.name}}) CLASS_NAME() string {
  return "{{o.name}}"
}
func (*{{o.name}}) DEFAULT_VALUE() int32 {
  return {{o.values|first}}
}
func (self *{{o.name}}) IsValid() bool {
  return sort.SearchInts(_{{o.name}}_values, int(*self)) != -1
}
func {{o.name}}_GetNameByValue(value int) string {
	for name, num := range _{{o.name}}_map {
		if value == int(num) {
			return name
		}
	}
	return ""
}
func New{{o.name}}ByName(name string) ({{o.name}}, error) {
  if v, ok := _{{o.name}}_map[name]; ok == true {
    return v, nil
  }
  return 0, errors.Errorf("Wrong name of {{o.name}}: '%s'", name)
}
{% endmacro %}

{% macro enum_values_list(o) %}
{%- for v in o.values|sort ~%}
{{v}},
{%- endfor ~%}
{% endmacro %}

{% macro enum_values_map(o) %}
{%- for k,v in o.values ~%}
"{{k}}" : {{v}},
{%- endfor ~%}
{% endmacro %}

{% macro enum_consts(o) %}
{%- for k,v in o.values ~%}
{{o.name}}_{{k}} {{o.name}} = {{v}}
{%- endfor ~%}
{% endmacro %}

{% macro decl_rpc(meta, o) %}

{{_self._decl_rpc_part(meta, o.req, o.code)}}
{{_self._decl_rpc_part(meta, o.rsp, o.code)}}

func New{{o.name}}() *{{o.name}} {
  rpc := {{o.name}}{}
  rpc.Req = New{{o.req.name}}()
  rpc.Rsp = New{{o.rsp.name}}()
  return &rpc
}

type {{o.name}} struct {
  ErrCode  int32
  ErrMsg string
  Req  *{{o.req.name}}
  Rsp *{{o.rsp.name}}
}

func (rpc *{{o.name}}) SetError(code int32, msg string) {
  rpc.ErrCode = code
  rpc.ErrMsg = msg
}

func (rpc *{{o.name}}) GetError() (int32, string) {
  return rpc.ErrCode, rpc.ErrMsg
}

func (rpc *{{o.name}}) GetRequest() meta.IMetaStruct {
  return rpc.Req
}

func (rpc *{{o.name}}) GetResponse() meta.IMetaStruct {
  return rpc.Rsp
}

func (rpc *{{o.name}}) GetName() string {
  return "{{o.name}}"
}

func (rpc *{{o.name}}) GetCode() int32 {
  return {{o.code}}
}

type IRPCHandler_{{o.name}} interface {
  {{o.name}}(*{{o.name}}) error
}

func (rpc *{{o.name}}) Execute(h interface{}) error{
  mh, ok := h.(IRPCHandler_{{o.name}})
  if !ok {
    return errors.New("RPC '{{o.name}}(*{{o.name}}) error' is not implemented")
  }
  return mh.{{o.name}}(rpc)
}

{% endmacro %}

{% macro _decl_rpc_part(meta, o, code) %}

{{_self.decl_struct(meta, o)}}

var {{o.name}}_ func(interface{}, *{{o.name}}, *{{o.name|rpc_invert}}) error

func (self *{{o.name}}) I{{o.name}}() *{{o.name}} {
  return self
}

func (*{{o.name}}) GetCode() int32 {
  return {{code}}
}

{% endmacro %}