{#--- Begin #}
  function {{struct.name}}(values) {
    this.initDefaults_();
    this.initFields_(values);
  }

{#--- Enums #}
{%- from "enum_definition.tmpl" import enum_def %}
{%  for enum in struct.enums %}
  {{enum_def("%s.%s"|format(struct.name, enum.name), enum)}}
{%-  endfor %}

{#--- Constants #}
{%  for constant in struct.constants %}
  {{struct.name}}.{{constant.name}} = {{constant.value|expression_to_text}};
{%-  endfor %}

{#--- initDefaults() #}
  {{struct.name}}.prototype.initDefaults_ = function() {
{%- for packed_field in struct.packed.packed_fields %}
    this.{{packed_field.field.name}} = {{packed_field.field|default_value}};
{%- endfor %}
  };

{#--- initFields() #}
  {{struct.name}}.prototype.initFields_ = function(fields) {
    for(var field in fields) {
        if (this.hasOwnProperty(field))
          this[field] = fields[field];
    }
  };

{#--- Validation #}

  {{struct.name}}.validate = function(messageValidator, offset) {
    var err;
{% macro check_err() -%}
    if (err !== validator.validationError.NONE)
        return err;
{%- endmacro %}
    err = messageValidator.validateStructHeader(offset, {{struct.name}}.encodedSize, {{struct.packed.packed_fields|length}});
    {{check_err()}}

{%- for packed_field in struct.packed.packed_fields %}
{%-   set field_name = packed_field.field.name %}
{%-   if packed_field.field|is_string_pointer_field %}
    // validate {{struct.name}}.{{field_name}}
    err = messageValidator.validateStringPointer({{packed_field|validate_string_params}})
    {{check_err()}}
{%-   elif packed_field.field|is_array_pointer_field %}
    // validate {{struct.name}}.{{field_name}}
    err = messageValidator.validateArrayPointer({{packed_field|validate_array_params}});
    {{check_err()}}
{%-   elif packed_field.field|is_struct_pointer_field %}
    // validate {{struct.name}}.{{field_name}}
    err = messageValidator.validateStructPointer({{packed_field|validate_struct_params}});
    {{check_err()}}
{%-   elif packed_field.field|is_map_pointer_field %}
    // validate {{struct.name}}.{{field_name}}
    err = messageValidator.validateMapPointer({{packed_field|validate_map_params}});
    {{check_err()}}
{%-   elif packed_field.field|is_handle_field %}
    // validate {{struct.name}}.{{field_name}}
    err = messageValidator.validateHandle({{packed_field|validate_handle_params}})
    {{check_err()}}
{%-   endif %}
{%- endfor %}

    return validator.validationError.NONE;
  };

{#--- Encoding and decoding #}

  {{struct.name}}.encodedSize = codec.kStructHeaderSize + {{struct.packed|payload_size}};

  {{struct.name}}.decode = function(decoder) {
    var packed;
    var val = new {{struct.name}}();
    var numberOfBytes = decoder.readUint32();
    var numberOfFields = decoder.readUint32();
{%- for byte in struct.bytes %}
{%-   if byte.packed_fields|length > 1 %}
    packed = decoder.readUint8();
{%-     for packed_field in byte.packed_fields %}
    val.{{packed_field.field.name}} = (packed >> {{packed_field.bit}}) & 1 ? true : false;
{%-     endfor %}
{%-   else %}
{%-     for packed_field in byte.packed_fields %}
    val.{{packed_field.field.name}} = decoder.{{packed_field.field.kind|decode_snippet}};
{%-     endfor %}
{%-   endif %}
{%-   if byte.is_padding %}
    decoder.skip(1);
{%-   endif %}
{%- endfor %}
    return val;
  };

  {{struct.name}}.encode = function(encoder, val) {
    var packed;
    encoder.writeUint32({{struct.name}}.encodedSize);
    encoder.writeUint32({{struct.packed.packed_fields|length}});

{%- for byte in struct.bytes %}
{%-   if byte.packed_fields|length > 1 %}
    packed = 0;
{%-     for packed_field in byte.packed_fields %}
    packed |= (val.{{packed_field.field.name}} & 1) << {{packed_field.bit}}
{%-     endfor %}
    encoder.writeUint8(packed);
{%-   else %}
{%-     for packed_field in byte.packed_fields %}
    encoder.{{packed_field.field.kind|encode_snippet}}val.{{packed_field.field.name}});
{%-     endfor %}
{%-   endif %}
{%-   if byte.is_padding %}
    encoder.skip(1);
{%-   endif %}
{%- endfor %}
  };