578ed1ba98
Moving all of my Emacs-related files into their own directory at the root of this repository.
95 lines
2.9 KiB
EmacsLisp
95 lines
2.9 KiB
EmacsLisp
;;; macros.el --- Helpful variables for making my ELisp life more enjoyable -*- lexical-binding: t -*-
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;; Authpr: William Carroll <wpcarro@gmail.com>
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;;; Commentary:
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;; This file contains helpful variables that I use in my ELisp development.
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;; TODO: Consider a macro solution for mimmicking OCaml's auto resolution of
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;; dependencies using `load-path' and friends.
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;;; Code:
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(require 'f)
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(require 'string)
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(require 'symbol)
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;; TODO: Support `xi' lambda shorthand macro.
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(defmacro enable (mode)
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"Helper for enabling `MODE'.
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Useful in `add-hook' calls. Some modes, like `linum-mode' need to be called as
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`(linum-mode 1)', so `(add-hook mode #'linum-mode)' won't work."
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`#'(lambda nil (,mode 1)))
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(defmacro disable (mode)
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"Helper for disabling `MODE'.
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Useful in `add-hook' calls."
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`#'(lambda nil (,mode -1)))
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(defmacro add-hooks (modes callback)
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"Add multiple `MODES' for the `CALLBACK'.
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Usage: (add-hooks '(one-mode-hook 'two-mode-hook) #'fn)"
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`(dolist (mode ,modes)
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(add-hook mode ,callback)))
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(defmacro add-hook-before-save (mode f)
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"Register a hook, `F', for a mode, `MODE' more conveniently.
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Usage: (add-hook-before-save 'reason-mode-hook #'refmt-before-save)"
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`(add-hook ,mode
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(lambda ()
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(add-hook 'before-save-hook ,f))))
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;; TODO: Debug.
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(defmacro macros/ilambda (&rest body)
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"Surrounds `BODY' with an interactive lambda function."
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`(lambda ()
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(interactive)
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,@body))
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;; TODO: Privatize?
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(defun namespace ()
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"Return the namespace for a function based on the filename."
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(->> (buffer-file-name)
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f-filename
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f-base))
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(defmacro macros/comment (&rest _)
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"Empty comment s-expresion where `BODY' is ignored."
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`nil)
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;; NOTE: Not prepending the "macros" to this macro, since brevity is its goal.
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(defmacro >> (&rest forms)
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"Compose a new, point-free function by composing FORMS together."
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(let ((sym (gensym)))
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`(lambda (,sym)
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(->> ,sym ,@forms))))
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;; TOOD: Support this.
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(cl-defmacro macros/test
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(&key function
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test
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args
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expect
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equality)
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(let* ((namespace (namespace))
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(test-name (string/->symbol
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(s-concat namespace
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"/"
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"test"
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"/"
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(s-chop-prefix
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(s-concat namespace "/")
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(symbol/to-string function))))))
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`(ert-deftest ,test-name ()
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,test
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(should (,equality (apply ,function ,args)
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,expect)))))
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(defmacro macros/support-file-extension (ext mode)
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"Register MODE to automatically load with files ending with EXT extension.
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Usage: (macros/support-file-extension \"pb\" protobuf-mode)"
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(let ((extension (string/format "\\.%s\\'" ext)))
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`(add-to-list 'auto-mode-alist '(,extension . ,mode))))
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(provide 'macros)
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;;; macros.el ends here
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