Clojure Refactoring Mode

Provides automated refactoring for clojure code in Emacs/SLIME with clojure-mode.

Available refactorings

Extract-fn - extracts the current expression and replaces it with a call to it.

Global rename - Replaces all calls to the symbol at point (in the current project) with the new name.

Thread-last - threads the current expression via ->>

Thread-first - threads the current expression via ->

Unthread - unthreads the current expression.

Extract global - defines the current expression as a global var for this namespace (using def).

Extract local - defines the current expression as a local variable for the current function definition.

Destructure map - Replaces calls to keywords on a particular map with a destructuring for that map in the args. Only works on top-level defn forms with one type of arity. Also only works for maps called with keywords.

Rename - Changes a name just in this sexp.

Easy Installation

This mode can be installed as a leiningen plugin:

lein plugin install joodie/clojure-refactoring 0.6.5-SNAPSHOT

The clojure-refactoring Emacs functions will then be available whenever you run M-x clojure-jack-in to start a SLIME session.

If you don't want to install as a leiningen plugin, you can also declare clojure-refactoring as a dependency in your project.clj, pom.xml or use some other dependency mechanism. As long as the clojure-refactoring jar ends up on your class path, clojure-jack-in will make sure the emacs interface is loaded.

If you don't use clojure-jack-in, see the section "Customized Installation" below.

Clojure version issues

The master branch of clojure-refactoring (where the releases are prepared) is currently untestable under clojure 1.3, due to many dependencies on clojure-contrib 1.2. It probably will break something if you try to use it on clojure 1.3, so be careful.

Work is under way to get clojure-refactoring testable and working on both clojure 1.2 and 1.3. If you want to help out with this or just try it out, check out the clojure-1.3 branch of the repository:

https://github.com/joodie/clojure-refactoring/tree/clojure-1.3

Usage

clojure-refactoring-prompt will be bound to C-c C-f when you're running SLIME. Press C-c C-f at some point in the code and you will be prompted to select a refactoring.

Note that global rename will be slow at first, as it has to read the source files into a cache.

NOTE: Still in alpha, has some breakages. Report any problems via Github Issues please.

Emacs dependencies

clojure-mode (with swank-clojure 1.3.3 or higher), paredit, and thing at point.

Having ido-mode enabled is recommended when using clojure-refactoring-prompt.

In general, this code is tested to work on [emacs-24 pretest on OSX] emacs-osx with [starter-kit-lisp version 2] starter-kit from marmalade marmalade.

Customized Installation

If you don't want to use clojure-jack-in, you should install the jar as usual (as a dependency in your project or as a leiningen plugin) and then extract src/clojure_refactoring/payload/clojure-refactoring-mode.el and put it on your elisp load-path (for instance, copy to or symlink from $HOME/.emacs.d) and (require 'clojure-refactoring-mode) in your emacs's init.el.

Hacking Philosophy

Wherever possible, have a reverse of each refactoring.
Refactoring should be quick
Refactoring names should correspond to known refactorings from OO (where possible).
Write a functional test for each refactoring (takes in a string and outputs the correct string).

Known bugs

After doing a global rename, refactoring-mode doesn't reload the namespaces in the right order, so there is sometimes a null pointer exception after doing this. For now, you can fix this by restarting swank.

Changes since 0.6.0

v0.6.5-SNAPSHOT

fix tests and extract-fn
move cursor to arguments / position for inline docs of extracted function.

v0.6.4

hook into slime-mode-hook so that the refactoring mode is switched on for all clojure-mode buffers already opened when clojure-jack-in is executed.
keep and re-indent formatting of extracted functions

v0.6.3

this code can now be installed as a leiningen plugin and hooks into clojure-jack-in with no more configuration required.

v0.6.2

all refactorings are now implemented as interactive elisp functions and take arguments where needed.
ido is no longer required
renamed clojure-refactoring-ido to clojure-refactoring-prompt
clojure-refactoring-prompt allows quick selection (partial completion) of alternatives when run under ido-mode

v0.6.1

bug fix release

v0.6.0

licensing updates, parsing fixes, general maintenance

License

Copyright (C) 2009-2010 Tom Crayford,
          (C) 2011 Joost Diepenmaat, Zeekat Softwareontwikkeling

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:

  Redistributions of source code must retain the above copyright
  notice, this list of conditions and the following disclaimer.

  Redistributions in binary form must reproduce the above
  copyright notice, this list of conditions and the following
  disclaimer in the documentation and/or other materials provided
  with the distribution.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
OF THE POSSIBILITY OF SUCH DAMAGE.

joodie/clojure-refactoring

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