Language.Fay.FFI

Documentation

data JsPtr a

Instances

Foreign (JsPtr a)

Pointers to arbitrary objects are OK.

class Foreign a

Contains allowed foreign function types.

Instances

Foreign Bool

Bools are OK.

Foreign Char

Characters are OK.

Foreign Double

All numbers in JS are double.

Foreign ()

Unit is OK.

Foreign a => Foreign [a]

Lists → arrays are OK.

Foreign a => Foreign (Fay a)

JS values are foreignable.

Foreign (JsPtr a)

Pointers to arbitrary objects are OK.

(Foreign a, Foreign b) => Foreign (a -> b)

Functions are foreignable.

ffi

Arguments

:: Foreign a

=> String

The foreign value.

-> FayReturnType

JS return type (if any).

-> a

Bottom.

Declare a foreign action.