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;;; -*- lexical-binding: t -*-
(require 'yasnippet)
(defvar yas-text)
(defvar python-split-arg-arg-regex
"\\([[:alnum:]*]+\\)\\(:[[:blank:]]*[[:alpha:]]*\\)?\\([[:blank:]]*=[[:blank:]]*[[:alnum:]]*\\)?"
"Regular expression matching an argument of a python function.
First group should give the argument name.")
(defvar python-split-arg-separator
"[[:space:]]*,[[:space:]]*"
"Regular expression matching the separator in a list of argument.")
(defun python-split-args (arg-string)
"Split a python argument string ARG-STRING into a tuple of argument names."
(mapcar (lambda (x)
(when (string-match python-split-arg-arg-regex x)
(match-string-no-properties 1 x)))
(split-string arg-string python-split-arg-separator t)))
(defun python-args-to-docstring ()
"Return docstring format for the python arguments in yas-text."
(let* ((indent (concat "\n" (make-string (current-column) 32)))
(args (python-split-args yas-text))
(max-len (if args (apply 'max (mapcar (lambda (x) (length (nth 0 x))) args)) 0))
(formatted-args (mapconcat
(lambda (x)
(concat (nth 0 x) (make-string (- max-len (length (nth 0 x))) ? ) " -- "
(if (nth 1 x) (concat "\(default " (nth 1 x) "\)"))))
args
indent)))
(unless (string= formatted-args "")
(mapconcat 'identity (list "Keyword Arguments:" formatted-args) indent))))
(defun python-args-to-docstring-numpy ()
"return docstring format for the python arguments in yas-text"
(let* ((args (python-split-args yas-text))
(format-arg (lambda(arg)
(concat (nth 0 arg) " : " (if (nth 1 arg) ", optional") "\n")))
(formatted-params (mapconcat format-arg args "\n"))
(formatted-ret (mapconcat format-arg (list (list "out")) "\n")))
(unless (string= formatted-params "")
(mapconcat 'identity
(list "\nParameters\n----------" formatted-params
"\nReturns\n-------" formatted-ret)
"\n"))))
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