View Source Ash.Type.File.Source protocol (ash v3.4.43)

Protocol for allowing the casting of something into an Ash.Type.File.

Usage

defmodule MyStruct do
  defstruct [:path]

  @behavior Ash.Type.File.Implementation

  @impl Ash.Type.File.Implementation
  def path(%__MODULE__{path: path}), do: {:ok, path}

  @impl Ash.Type.File.Implementation
  def open(%__MODULE__{path: path}, modes), do: File.open(path, modes)

  defimpl Ash.Type.File.Source do
    def implementation(%MyStruct{} = struct), do: {:ok, MyStruct}
  end
end

Summary

Types

t()

All the types that implement this protocol.

Functions

implementation(file)

Detect Implementation of the file.

Types

t()

@type t() :: term()

All the types that implement this protocol.

Functions

implementation(file)

@spec implementation(t()) :: {:ok, Ash.Type.File.Implementation.t()} | :error

Detect Implementation of the file.

Returns an :ok tuple with the implementation module if the file is supported and :error otherwise.