Types and Literals

Nothing

Value for no value (pun intended). Similar to void or None in other languages.

Literal is nothing.

String

A string is a sequence of characters. A string starts with " and ends with ":

• "this is a string"
• ""

Following characters must be escaped (double the character): ":

• "Hello ""!"" " is string Hello "!"

Interpolated string

A string can be interpolated too. It starts with $" (instead of ") and contains expressions delimited by { and }:

• $"Hello { $name } !"

Following characters must be escaped (double the character): {, }, ":

• $"{{ Hello ""!"" }}" is string { Hello "!" }

Note following constructs are not allowed inside an expression:

• List
• Map
• Interpolated string

Boolean

Either literal true or false.

Number

A number is a 32 bits signed integer:

• 42
• -123456

List

A list is an ordered sequence of values - values can be of different types:

• [ 1 2 3 ]
• [ 1 "value" 42]

As Terrabuild does not use comma separator, it’s better to format like this:

[ 1
  2
  3 ]

[ 1
  "value"
  42 ]

Map

A map is a collection of named values. Name is always an identifier. Values can be of different types.

{ 
  configuration: "Release"
  max: 42
}

{ a: 1 b: 2 }

As Terrabuild does not use comma separator, it’s better to format like this:

{ configuration: "Release"
  max: 42 }

{ a: 1
  b: 2 }