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inf-iex-tracer.el
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;;; inf-iex-tracer.el --- Tracer support for INF IEx -*- lexical-binding: t; -*-
;; Copyright (C) 2020 DESKTOP-E16H44U
;; Author: DESKTOP-E16H44U <tianshu@DESKTOP-E16H44U>
;; Keywords: tools, elixir, iex
;; This program is free software; you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.
;; This program is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
;; along with this program. If not, see <https://www.gnu.org/licenses/>.
;;; Commentary:
;;
;;; Code:
(require 'inf-iex-util)
(require 'inf-iex-send)
(require 'inf-iex-eval)
(require 'dash)
(defconst inf-iex--find-caller-buffer
"*INF IEx Callers*")
(defun inf-iex--make-find-caller-exp (prefixs)
"Return the expression for defining tracer."
(let ((prefix-value (-> (--map (format "\"Elixir.%s.\"" it) prefixs)
(string-join ",")
(format "[%s]"))))
(format
"defmodule InfIExCallerFinder do
use Agent
def start_link(_) do
Agent.start_link(fn -> [] end, name: __MODULE__)
end
def run() do
__MODULE__.start_link(fn -> [] end)
Mix.Task.clear()
Mix.Task.rerun(\"compile\", [\"--force\", \"--ignore-module-conflict\", \"--tracer\", __MODULE__])
result = Agent.get(__MODULE__, & &1)
Agent.stop(__MODULE__)
Enum.join(result, \"\\n\")
|> IO.puts
end
def trace({:remote_function, _meta, module, fun, arity}, env) do
mod = to_string(module)
if String.starts_with?(mod, %s) do
Agent.update(__MODULE__, fn state ->
[\"__INF_IEX__#{env.file}\\t#{env.line}\\t#{inspect(module)}.#{fun}/#{arity}\" | state]
end)
end
:ok
end
def trace(_, _), do: :ok
end
InfIExCallerFinder.run()" prefix-value)))
(defvar-local inf-iex--tracer-items nil)
(defvar-local inf-iex--tracer-current-project nil)
(defvar-local inf-iex--tracer-current-prefix nil)
(defun inf-iex--tracer-redisplay ()
(erase-buffer)
(cl-loop for group in inf-iex--tracer-items do
(-let* (((fma . items) group))
(insert fma "\n")
(cl-loop for item in items do
(-let* (((file line-no _fma) item))
(insert " |- ")
(insert-button
(format "%s:%s" (file-relative-name file inf-iex--tracer-current-project) line-no)
'follow-link t
'action (lambda (_) (find-file file)
(goto-char (point-min))
(forward-line (1- (string-to-number line-no)))))
(insert "\n")))))
(goto-char (point-min))
(inf-iex-tracer-next))
(defun inf-iex--handle-find-callers-result (result proj-root)
(let* ((lines (->> (split-string result "\n")
(--filter (string-prefix-p "__INF_IEX__" it))
(--map (substring it 11))))
(buf (get-buffer-create inf-iex--find-caller-buffer)))
(with-current-buffer buf
(inf-iex-tracer-mode)
(let ((buffer-read-only nil))
(setq inf-iex--tracer-current-project proj-root)
(setq inf-iex--tracer-items
(->> (--map (split-string it "\t") lines)
(-group-by #'caddr)
(-sort (lambda (x y) (string< (car x) (car y))))))
(inf-iex--tracer-redisplay)))
buf))
(defvar inf-iex-tracer-prefix-history nil)
(defun inf-iex-tracer ()
(interactive)
(let* ((proj-root (inf-iex--project-root))
(prefixs (-> (read-from-minibuffer "Module prefixs(separate by comma): " "" nil nil inf-iex-tracer-prefix-history)
(split-string ","))))
(setq inf-iex--tracer-current-prefix prefixs)
(-> (inf-iex--make-find-caller-exp prefixs)
(inf-iex--format-eval-code)
(inf-iex--send-string-async)
(inf-iex--handle-find-callers-result proj-root)
(pop-to-buffer t))))
(defun inf-iex--trace-mode-init ())
(defun inf-iex-tracer-next ()
(interactive)
(forward-line 1)
(unless (equal 32 (char-after (line-beginning-position)))
(forward-line 1))
(goto-char (+ 5 (line-beginning-position))))
(defun inf-iex-tracer-prev ()
(interactive)
(forward-line -1)
(unless (equal 32 (char-after (line-beginning-position)))
(forward-line -1))
(goto-char (+ 5 (line-beginning-position))))
(defvar inf-iex-tracer-search-history nil)
(defun inf-iex-tracer-search ()
(interactive)
(let ((s (completing-read "Search: "
(-map #'car inf-iex--tracer-items)
nil
t
nil
inf-iex-tracer-search-history)))
(goto-char (point-min))
(re-search-forward (concat "^" (regexp-quote s)) nil t 1)
(inf-iex-tracer-next)))
(defun inf-iex-tracer-refresh ()
(interactive)
(-> (inf-iex--make-find-caller-exp inf-iex--tracer-current-prefix)
(inf-iex--format-eval-code)
(inf-iex--send-string-async)
(inf-iex--handle-find-callers-result inf-iex--tracer-current-project)))
(defvar inf-iex-tracer-mode-map
(let ((keymap (make-sparse-keymap)))
(define-key keymap (kbd "n") 'inf-iex-tracer-next)
(define-key keymap (kbd "p") 'inf-iex-tracer-prev)
(define-key keymap (kbd "j") 'inf-iex-tracer-next)
(define-key keymap (kbd "k") 'inf-iex-tracer-prev)
(define-key keymap (kbd "s") 'inf-iex-tracer-search)
(define-key keymap (kbd "r") 'inf-iex-tracer-refresh)
keymap))
(define-derived-mode inf-iex-tracer-mode
special-mode " inf-IEx Tracer"
"Major mode for display tracer result in inf-iex."
:keymap inf-iex-tracer-mode-map
(inf-iex--trace-mode-init))
(provide 'inf-iex-tracer)
;;; inf-iex-tracer.el ends here