Idealingua Language Reference

Keywords and aliases

Keyword Aliases Explanation
domain package, namespace Namespace containing collection of entities
import References a domain by id
include Includes *.model file by name
alias type, using Type alias
enum Enumeration
mixin interface Mixin, named collection of fields
data dto, struct Data
adt choice Algebraic Data Type
id Identifier, named collection of scalars
service Service interface
def fn, func, fun Method

Inheritance operators

Keyword Aliases Explanation Example
+ +++, ... Inherit structure (copy fields) + Mixin
& &&& Inherit interface & Mixin
- --- Drop structure or field (doesn’t work for interfaces) - Mixin, - field: str

Built-in types


Type name Aliases Explanation Scala type
str string String String
bool boolean, bit Boolean Boolean
i08 byte, int8 8-bit integer Byte
i16 short, int16 16-bit integer Short
i32 int, int32 32-bit integer Int
i64 long, int64 64-bit integer Long
f32 float, flt Single precision floating point Float
f64 double, dbl Double precision floating point Double
uid uuid UUID java.util.UUID
tsz dtl, datetimel Timestamp with timezone java.time.ZonedDateTime
tsl dtz, datetimez Local timestamp java.time.LocalDateTime
time time Time java.time.LocalTime
date date Date java.time.LocalDate


  1. When the target language lacks a corresponding numeric type, we use the smallest type available that includes the required type. e.g. in TypeScript i08 is number
  2. When the target language lacks types for time


Type name Explanation Scala mapping
list[T] List List
map[K, V] Map (only scalar and id keys are supported) Map
opt[T] Optional value Option
set[T] Set (unordered) Set