109 lines
3.0 KiB
EmacsLisp
109 lines
3.0 KiB
EmacsLisp
;;; rust-cargo.el --- Support for cargo -*-lexical-binding: t-*-
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;;; Commentary:
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;; This library implements support for running `cargo'.
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;;; Code:
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(require 'json)
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;;; Options
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(defcustom rust-cargo-bin "cargo"
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"Path to cargo executable."
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:type 'string
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:group 'rust-mode)
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(defcustom rust-always-locate-project-on-open nil
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"Whether to run `cargo locate-project' every time `rust-mode' is activated."
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:type 'boolean
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:group 'rust-mode)
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(defcustom rust-cargo-default-arguments ""
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"Default arguments when running common cargo commands."
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:type 'string
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:group 'rust-mode)
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;;; Buffer Project
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(defvar-local rust-buffer-project nil)
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(defun rust-buffer-project ()
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"Get project root if possible."
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(with-temp-buffer
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(let ((ret (call-process rust-cargo-bin nil t nil "locate-project")))
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(when (/= ret 0)
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(error "`cargo locate-project' returned %s status: %s" ret (buffer-string)))
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(goto-char 0)
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(let ((output (json-read)))
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(cdr (assoc-string "root" output))))))
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(defun rust-update-buffer-project ()
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(setq-local rust-buffer-project (rust-buffer-project)))
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(defun rust-maybe-initialize-buffer-project ()
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(setq-local rust-buffer-project nil)
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(when rust-always-locate-project-on-open
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(rust-update-buffer-project)))
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(add-hook 'rust-mode-hook 'rust-maybe-initialize-buffer-project)
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;;; Internal
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(defun rust--compile (format-string &rest args)
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(when (null rust-buffer-project)
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(rust-update-buffer-project))
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(let ((default-directory
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(or (and rust-buffer-project
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(file-name-directory rust-buffer-project))
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default-directory)))
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(compile (apply #'format format-string args))))
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;;; Commands
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(defun rust-check ()
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"Compile using `cargo check`"
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(interactive)
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(rust--compile "%s check %s" rust-cargo-bin rust-cargo-default-arguments))
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(defun rust-compile ()
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"Compile using `cargo build`"
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(interactive)
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(rust--compile "%s build %s" rust-cargo-bin rust-cargo-default-arguments))
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(defun rust-compile-release ()
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"Compile using `cargo build --release`"
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(interactive)
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(rust--compile "%s build --release" rust-cargo-bin))
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(defun rust-run ()
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"Run using `cargo run`"
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(interactive)
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(rust--compile "%s run %s" rust-cargo-bin rust-cargo-default-arguments))
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(defun rust-run-release ()
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"Run using `cargo run --release`"
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(interactive)
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(rust--compile "%s run --release" rust-cargo-bin))
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(defun rust-test ()
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"Test using `cargo test`"
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(interactive)
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(rust--compile "%s test %s" rust-cargo-bin rust-cargo-default-arguments))
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(defun rust-run-clippy ()
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"Run `cargo clippy'."
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(interactive)
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(when (null rust-buffer-project)
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(rust-update-buffer-project))
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(let* ((args (list rust-cargo-bin "clippy"
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(concat "--manifest-path=" rust-buffer-project)))
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;; set `compile-command' temporarily so `compile' doesn't
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;; clobber the existing value
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(compile-command (mapconcat #'shell-quote-argument args " ")))
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(rust--compile compile-command)))
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;;; _
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(provide 'rust-cargo)
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;;; rust-cargo.el ends here
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