Golang primitive data types.

Emi golang compiler converts the Emi data types into appropriate keywords and structs in Golang. Emi types are fundamentally inspired by golang data types anyway, but still there might be some mismatches added over time. Besides for nested objects, new structs needed to be created.

Default values in Go version

Golang pure structs (unlike classes in js) cannot have a custom default value without initialization. Emi might generate helper function to solve this issue, but at the written time of this document is not available.

Primitive support in Golang is standard as bool and bool? emi types. bool resolves the primitive counterpart in golang without modification, whearas the nullable data types such as bool? will be wrapped around Nullable[bool] similar to all other primitives and structs which are nullable.

Emi doesn’t generate pointer elements in Golang, and it’s support has been removed many years ago in Fireback.

name: MyBoolClass
fields:
  - name: boolWithDefault
    default: true
    type: bool
  - name: plainBool
    type: bool?
  - name: intField
    type: int
  - name: int32Field
    type: int32
  - name: int64Field
    type: int64
  - name: intFieldNullable
    type: int?
  - name: int32FieldNullable
    type: int32?
  - name: int64FieldNullable
    type: int64?
  - name: stringField
    type: string
  - name: stringFieldNullable
    type: string?
  - name: anyField
    type: any
  - name: inner
    type: object
    fields:
      - name: sliceField
        type: slice
        primitive: string
      - name: sliceFieldOptional
        type: slice?
        primitive: int

Possible result:

package datatypes

import "encoding/json"

func GetMyBoolClassCliFlags(prefix string) []emigo.CliFlag {
  return []emigo.CliFlag{
    {
      Name: prefix + "bool-with-default",
      Type: "bool",
    },
    {
      Name: prefix + "plain-bool",
      Type: "bool?",
    },
    {
      Name: prefix + "int-field",
      Type: "int",
    },
    {
      Name: prefix + "int32-field",
      Type: "int32",
    },
    {
      Name: prefix + "int64-field",
      Type: "int64",
    },
    {
      Name: prefix + "int-field-nullable",
      Type: "int?",
    },
    {
      Name: prefix + "int32-field-nullable",
      Type: "int32?",
    },
    {
      Name: prefix + "int64-field-nullable",
      Type: "int64?",
    },
    {
      Name: prefix + "string-field",
      Type: "string",
    },
    {
      Name: prefix + "string-field-nullable",
      Type: "string?",
    },
    {
      Name: prefix + "any-field",
      Type: "any",
    },
    {
      Name:     prefix + "inner",
      Type:     "object",
      Children: GetMyBoolClassInnerCliFlags("inner-"),
    },
  }
}
func CastMyBoolClassFromCli(c emigo.CliCastable) MyBoolClass {
  data := MyBoolClass{}
  if c.IsSet("bool-with-default") {
    data.BoolWithDefault = bool(c.Bool("bool-with-default"))
  }
  if c.IsSet("plain-bool") {
    emigo.ParseNullable(c.String("plain-bool"), &data.PlainBool)
  }
  if c.IsSet("int-field") {
    data.IntField = int(c.Int64("int-field"))
  }
  if c.IsSet("int32-field") {
    data.Int32Field = int32(c.Int64("int32-field"))
  }
  if c.IsSet("int64-field") {
    data.Int64Field = int64(c.Int64("int64-field"))
  }
  if c.IsSet("int-field-nullable") {
    emigo.ParseNullable(c.String("int-field-nullable"), &data.IntFieldNullable)
  }
  if c.IsSet("int32-field-nullable") {
    emigo.ParseNullable(c.String("int32-field-nullable"), &data.Int32FieldNullable)
  }
  if c.IsSet("int64-field-nullable") {
    emigo.ParseNullable(c.String("int64-field-nullable"), &data.Int64FieldNullable)
  }
  if c.IsSet("string-field") {
    data.StringField = c.String("string-field")
  }
  if c.IsSet("string-field-nullable") {
    emigo.ParseNullable(c.String("string-field-nullable"), &data.StringFieldNullable)
  }
  if c.IsSet("inner") {
    data.Inner = CastMyBoolClassInnerFromCli(c)
  }
  return data
}

// The base class definition for myBoolClass
type MyBoolClass struct {
  BoolWithDefault     bool                   `json:"boolWithDefault" yaml:"boolWithDefault"`
  PlainBool           emigo.Nullable[bool]   `json:"plainBool" yaml:"plainBool"`
  IntField            int                    `json:"intField" yaml:"intField"`
  Int32Field          int32                  `json:"int32Field" yaml:"int32Field"`
  Int64Field          int64                  `json:"int64Field" yaml:"int64Field"`
  IntFieldNullable    emigo.Nullable[int]    `json:"intFieldNullable" yaml:"intFieldNullable"`
  Int32FieldNullable  emigo.Nullable[int32]  `json:"int32FieldNullable" yaml:"int32FieldNullable"`
  Int64FieldNullable  emigo.Nullable[int64]  `json:"int64FieldNullable" yaml:"int64FieldNullable"`
  StringField         string                 `json:"stringField" yaml:"stringField"`
  StringFieldNullable emigo.Nullable[string] `json:"stringFieldNullable" yaml:"stringFieldNullable"`
  AnyField            interface{}            `json:"anyField" yaml:"anyField"`
  Inner               MyBoolClassInner       `json:"inner" yaml:"inner"`
}

func GetMyBoolClassInnerCliFlags(prefix string) []emigo.CliFlag {
  return []emigo.CliFlag{
    {
      Name: prefix + "slice-field",
      Type: "slice",
    },
    {
      Name: prefix + "slice-field-optional",
      Type: "slice?",
    },
  }
}
func CastMyBoolClassInnerFromCli(c emigo.CliCastable) MyBoolClassInner {
  data := MyBoolClassInner{}
  if c.IsSet("slice-field") {
    emigo.InflatePossibleSlice(c.String("slice-field"), &data.SliceField)
  }
  if c.IsSet("slice-field-optional") {
    emigo.ParseNullable(c.String("slice-field-optional"), &data.SliceFieldOptional)
  }
  return data
}

// The base class definition for inner
type MyBoolClassInner struct {
  SliceField         []string              `json:"sliceField" yaml:"sliceField"`
  SliceFieldOptional emigo.Nullable[[]int] `json:"sliceFieldOptional" yaml:"sliceFieldOptional"`
}

func (x *MyBoolClass) Json() string {
  if x != nil {
    str, _ := json.MarshalIndent(x, "", "  ")
    return string(str)
  }
  return ""
}