inf-crystal.el

Run a Inferior-Crystal process in a buffer

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inf-crystal provides a REPL buffer connected to a icr subprocess. It's based on ideas from the popular inferior-lisp package.

inf-crystal has two components - a basic crystal REPL and a minor mode (inf-crystal-minor-mode), which extends crystal-mode with commands to evaluate forms directly in the REPL.

inf-crystal provides a set of essential features for interactive Crystal development:

• REPL
• Interactive code evaluation

ICR

To be able to connect to inf-crystal, you need to make sure that icr is installed. Installation instructions can be found on the main page of icr.

Installation

Via package.el

Available on all major package.el community maintained repos - MELPA Stable and MELPA repos.

MELPA Stable is recommended as it has the latest stable version. MELPA has a development snapshot for users who don't mind breakage but don't want to run from a git checkout.

You can install inf-crystal using the following command:

M-x package-install [RET] inf-crystal [RET]

or if you'd rather keep it in your dotfiles:

  (unless (package-installed-p 'inf-crystal)
    (package-refresh-contents)
    (package-install 'inf-crystal))

If the installation doesn't work try refreshing the package list:

M-x package-refresh-contents

Manual

If you're installing manually, you'll need to:

• drop the file somewhere on your load path (perhaps ~/.emacs.d)
• Add the following lines to your .emacs file:

   (autoload 'inf-crystal "inf-crystal" "Run an inferior Crystal process" t)
   (add-hook 'crystal-mode-hook 'inf-crystal-minor-mode)

Usage

Run one of the predefined interactive functions.

See Function Documentation for details.

Function Documentation

(inf-crystal-reset)

Clear out all of the accumulated commands.

(inf-crystal-toggle-debug-mode)

Toggle debug mode off and on. In debug mode icr will print the code before executing it.

(inf-crystal-enable-paste-mode)

Enable paste mode.

(inf-crystal-disable-paste-mode)

Disable paste mode.

(inf-crystal-clear-repl-buffer)

Clear the REPL buffer.

(inf-crystal-quit &optional BUFFER)

Kill the REPL buffer and its underlying process.

You can pass the target BUFFER as an optional parameter to suppress the usage of the target buffer discovery logic.

(inf-crystal-restart &optional BUFFER)

Restart the REPL buffer and its underlying process.

You can pass the target BUFFER as an optional parameter to suppress the usage of the target buffer discovery logic.

(inf-crystal CMD)

Launch a crystal interpreter in a buffer. using ‘inf-crystal-interpreter’as an inferior mode.

Argument CMD defaults to ‘inf-crystal-interpreter’. When called interactively with ‘prefix-arg’, it allows the user to edit such value.

(crystal-switch-to-inf EOB-P)

Switch to the inf-crystal process buffer. With argument, positions cursor at end of buffer.

(crystal-send-last-sexp)

Send the previous sexp to the inferior crystal process.

(crystal-send-line)

Send the current line to the inferior crystal process.

(crystal-send-definition)

Send the current definition to the inferior crystal process.

(crystal-send-definition-and-go)

Send the current definition to the inferior Crystal. Then switch to the process buffer.

(crystal-send-region START END)

Send the region delimited by START and END to inferior crystal process.

(crystal-send-region-and-go START END)

Send the region delimited by START and END to inferior crystal process. Then switch to the process buffer.

(crystal-send-buffer)

Send the current buffer to the inferior crystal process.

(crystal-send-buffer-and-go)

Send the current buffer to the inferior crystal process. Then switch to the process buffer.

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