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;;; geiser-capf.el --- Setup for Geiser's CAPFs -*- lexical-binding: t; -*-
;; Copyright (c) 2022 Jose Antonio Ortega Ruiz
;; This program is free software; you can redistribute it and/or
;; modify it under the terms of the Modified BSD License. You should
;; have received a copy of the license along with this program. If
;; not, see <http://www.xfree86.org/3.3.6/COPYRIGHT2.html#5>.
;; Start date: Sat Apr 23, 2022 18:39
;;; Code:
(require 'geiser-autodoc)
(require 'geiser-impl)
(require 'geiser-eval)
(require 'geiser-doc)
(require 'geiser-completion)
(require 'geiser-edit)
(defun geiser-capf--company-docsig (id)
(condition-case err
(when (and geiser-impl--implementation (not (geiser-autodoc--inhibit)))
(let* ((id (substring-no-properties id))
(help (geiser-autodoc--autodoc `((,id 0)) nil)))
(and help (substring-no-properties help))))
(error (geiser-log--warn "Error computing docsig: %s" err))))
(defun geiser-capf--company-doc-buffer (id)
(when geiser-impl--implementation
(let* ((module (geiser-eval--get-module))
(symbol (make-symbol id))
(ds (geiser-doc--get-docstring symbol module)))
(when (consp ds)
(with-current-buffer (get-buffer-create "*company-documentation*")
(geiser-doc--render-docstring ds symbol module)
(current-buffer))))))
(defun geiser-capf--company-location (id)
(condition-case _err
(when (and geiser-impl--implementation (not (geiser-autodoc--inhibit)))
(let ((id (make-symbol id)))
(condition-case nil
(geiser-edit-module id 'noselect)
(error (geiser-edit-symbol id 'noselect)))))
(error (message "Location not found for %s" id))))
(defun geiser-capf--thing-at-point (module &optional _predicate)
(with-syntax-table scheme-mode-syntax-table
(let* ((beg (geiser-completion--symbol-begin module))
(end (or (geiser-completion--prefix-end beg module) beg))
(prefix (and (> end beg) (buffer-substring-no-properties beg end)))
(prefix (and prefix
(if (string-match "\\([^-]+\\)-" prefix)
(match-string 1 prefix)
prefix)))
(cmps (and prefix (geiser-completion--complete prefix module))))
(when cmps
(list beg end cmps
:company-docsig
(and geiser-autodoc-use-docsig #'geiser-capf--company-docsig)
:company-doc-buffer #'geiser-capf--company-doc-buffer
:company-location #'geiser-capf--company-location)))))
(defun geiser-capf--for-symbol (&optional predicate)
(geiser-capf--thing-at-point nil predicate))
(defun geiser-capf--for-module (&optional predicate)
(geiser-capf--thing-at-point t predicate))
(defun geiser-capf--for-filename ()
(when (geiser-syntax--in-string-p)
(let ((comint-completion-addsuffix "\""))
(ignore-errors (comint-filename-completion)))))
(defconst geiser-capf--capfs
'(geiser-capf--for-filename geiser-capf--for-module geiser-capf--for-symbol))
(defun geiser-capf-setup (enable)
(if enable
(dolist (f geiser-capf--capfs)
(add-hook 'completion-at-point-functions f nil t))
(dolist (f geiser-capf--capfs)
(remove-hook 'completion-at-point-functions f t))))
(defun geiser-capf-complete-module ()
"Complete module name at point."
(interactive)
(let ((completion-at-point-functions '(geiser-capf--for-module)))
(call-interactively 'completion-at-point)))
(provide 'geiser-capf)
;;; geiser-capf.el ends here
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