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A code generation and project patching framework
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lib/igniter/extension.ex
# SPDX-FileCopyrightText: 2024 igniter contributors <https://github.com/ash-project/igniter/graphs/contributors>
#
# SPDX-License-Identifier: MIT
defmodule Igniter.Extension do
@moduledoc """
Alter igniter's behavior by adding new functionality.
This is used to allow frameworks to modify things like
the conventional location of files.
"""
defmacro __using__(_) do
quote do
@behaviour Igniter.Extension
end
end
@doc """
Choose a proper location for any given module.
Possible return values:
- `{:ok, path}`: The path where the module should be located.
- `:error`: It should go in the default place, or according to other extensions.
- `:keep`: Keep the module in the same location, unless another extension has a place for it, or its just been created.
"""
@callback proper_location(
Igniter.t(),
module(),
Keyword.t()
) :: {:ok, Path.t()} | :error
end