python.el 101 KB
Newer Older
1
;;; python.el --- Python's flying circus support for Emacs
Fabián Ezequiel Gallina's avatar
Fabián Ezequiel Gallina committed
2

3
;; Copyright (C) 2010, 2011 Free Software Foundation, Inc.
Fabián Ezequiel Gallina's avatar
Fabián Ezequiel Gallina committed
4 5

;; Author: Fabián E. Gallina <fabian@anue.biz>
6 7
;; URL: https://github.com/fgallina/python.el
;; Version: 0.23.1
Fabián Ezequiel Gallina's avatar
Fabián Ezequiel Gallina committed
8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37
;; Maintainer: FSF
;; Created: Jul 2010
;; Keywords: languages

;; This file is NOT part of GNU Emacs.

;; python.el 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.

;; python.el 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 python.el.  If not, see <http://www.gnu.org/licenses/>.

;;; Commentary:

;; Major mode for editing Python files with some fontification and
;; indentation bits extracted from original Dave Love's python.el
;; found in GNU/Emacs.

;; While it probably has less features than Dave Love's python.el and
;; PSF's python-mode.el it provides the main stuff you'll need while
;; keeping it simple :)

;; Implements Syntax highlighting, Indentation, Movement, Shell
38 39 40
;; interaction, Shell completion, Shell virtualenv support, Pdb
;; tracking, Symbol completion, Skeletons, FFAP, Code Check, Eldoc,
;; imenu.
Fabián Ezequiel Gallina's avatar
Fabián Ezequiel Gallina committed
41 42 43 44 45 46

;; Syntax highlighting: Fontification of code is provided and supports
;; python's triple quoted strings properly.

;; Indentation: Automatic indentation with indentation cycling is
;; provided, it allows you to navigate different available levels of
47 48 49
;; indentation by hitting <tab> several times.  Also when inserting a
;; colon the `python-indent-electric-colon' command is invoked and
;; causes the current line to be dedented automatically if needed.
Fabián Ezequiel Gallina's avatar
Fabián Ezequiel Gallina committed
50 51

;; Movement: `beginning-of-defun' and `end-of-defun' functions are
52
;; properly implemented.  There are also specialized
53 54 55 56 57
;; `forward-sentence' and `backward-sentence' replacements
;; (`python-nav-forward-sentence', `python-nav-backward-sentence'
;; respectively).  Extra functions `python-nav-sentence-start' and
;; `python-nav-sentence-end' are included to move to the beginning and
;; to the end of a setence while taking care of multiline definitions.
58 59
;; `python-nav-jump-to-defun' is provided and allows jumping to a
;; function or class definition quickly in the current buffer.
Fabián Ezequiel Gallina's avatar
Fabián Ezequiel Gallina committed
60

61
;; Shell interaction: is provided and allows you to execute easily any
Fabián Ezequiel Gallina's avatar
Fabián Ezequiel Gallina committed
62 63 64
;; block of code of your current buffer in an inferior Python process.

;; Shell completion: hitting tab will try to complete the current
Fabián Ezequiel Gallina's avatar
Fabián Ezequiel Gallina committed
65
;; word.  Shell completion is implemented in a manner that if you
Fabián Ezequiel Gallina's avatar
Fabián Ezequiel Gallina committed
66 67
;; change the `python-shell-interpreter' to any other (for example
;; IPython) it should be easy to integrate another way to calculate
68
;; completions.  You just need to specify your custom
Fabián Ezequiel Gallina's avatar
Fabián Ezequiel Gallina committed
69
;; `python-shell-completion-setup-code' and
70
;; `python-shell-completion-string-code'.
71 72

;; Here is a complete example of the settings you would use for
73
;; iPython 0.11:
74 75 76 77 78 79 80 81

;; (setq
;;  python-shell-interpreter "ipython"
;;  python-shell-interpreter-args ""
;;  python-shell-prompt-regexp "In \\[[0-9]+\\]: "
;;  python-shell-prompt-output-regexp "Out\\[[0-9]+\\]: "
;;  python-shell-completion-setup-code ""
;;  python-shell-completion-string-code
82 83 84 85 86 87 88
;;  "';'.join(get_ipython().Completer.all_completions('''%s'''))\n")

;; For iPython 0.10 everything would be the same except for
;; `python-shell-completion-string-code':

;; (setq python-shell-completion-string-code
;;       "';'.join(__IP.complete('''%s'''))\n")
Fabián Ezequiel Gallina's avatar
Fabián Ezequiel Gallina committed
89

90 91 92 93 94 95
;; Please note that the default completion system depends on the
;; readline module, so if you are using some Operating System that
;; bundles Python without it (like Windows) just install the
;; pyreadline from http://ipython.scipy.org/moin/PyReadline/Intro and
;; you should be good to go.

96 97
;; Shell virtualenv support: The shell also contains support for
;; virtualenvs and other special environment modifications thanks to
98 99
;; `python-shell-process-environment' and `python-shell-exec-path'.
;; These two variables allows you to modify execution paths and
100
;; environment variables to make easy for you to setup virtualenv rules
101
;; or behavior modifications when running shells.  Here is an example
102 103 104 105 106 107 108 109 110 111 112 113 114 115
;; of how to make shell processes to be run using the /path/to/env/
;; virtualenv:

;; (setq python-shell-process-environment
;;       (list
;;        (format "PATH=%s" (mapconcat
;;                           'identity
;;                           (reverse
;;                            (cons (getenv "PATH")
;;                                  '("/path/to/env/bin/")))
;;                           ":"))
;;        "VIRTUAL_ENV=/path/to/env/"))
;; (python-shell-exec-path . ("/path/to/env/bin/"))

116 117 118 119 120 121 122 123 124
;; Since the above is cumbersome and can be programatically
;; calculated, the variable `python-shell-virtualenv-path' is
;; provided.  When this variable is set with the path of the
;; virtualenv to use, `process-environment' and `exec-path' get proper
;; values in order to run shells inside the specified virtualenv.  So
;; the following will achieve the same as the previous example:

;; (setq python-shell-virtualenv-path "/path/to/env/")

125 126 127 128
;; Also the `python-shell-extra-pythonpaths' variable have been
;; introduced as simple way of adding paths to the PYTHONPATH without
;; affecting existing values.

Fabián Ezequiel Gallina's avatar
Fabián Ezequiel Gallina committed
129 130 131 132
;; Pdb tracking: when you execute a block of code that contains some
;; call to pdb (or ipdb) it will prompt the block of code and will
;; follow the execution of pdb marking the current line with an arrow.

Fabián Ezequiel Gallina's avatar
Fabián Ezequiel Gallina committed
133
;; Symbol completion: you can complete the symbol at point.  It uses
Fabián Ezequiel Gallina's avatar
Fabián Ezequiel Gallina committed
134 135 136
;; the shell completion in background so you should run
;; `python-shell-send-buffer' from time to time to get better results.

137 138 139 140 141 142 143
;; Skeletons: 6 skeletons are provided for simple inserting of class,
;; def, for, if, try and while.  These skeletons are integrated with
;; dabbrev.  If you have `dabbrev-mode' activated and
;; `python-skeleton-autoinsert' is set to t, then whenever you type
;; the name of any of those defined and hit SPC, they will be
;; automatically expanded.

144 145 146 147
;; FFAP: You can find the filename for a given module when using ffap
;; out of the box.  This feature needs an inferior python shell
;; running.

148 149
;; Code check: Check the current file for errors with `python-check'
;; using the program defined in `python-check-command'.
150

Fabián Ezequiel Gallina's avatar
Fabián Ezequiel Gallina committed
151
;; Eldoc: returns documentation for object at point by using the
Fabián Ezequiel Gallina's avatar
Fabián Ezequiel Gallina committed
152
;; inferior python subprocess to inspect its documentation.  As you
Fabián Ezequiel Gallina's avatar
Fabián Ezequiel Gallina committed
153 154 155
;; might guessed you should run `python-shell-send-buffer' from time
;; to time to get better results too.

156 157
;; imenu: This mode supports imenu.  It builds a plain or tree menu
;; depending on the value of `python-imenu-make-tree'.  Also you can
158 159 160
;; customize if menu items should include its type using
;; `python-imenu-include-defun-type'.

161 162 163 164 165 166 167 168 169 170 171 172 173 174 175
;; If you used python-mode.el you probably will miss auto-indentation
;; when inserting newlines.  To achieve the same behavior you have
;; two options:

;; 1) Use GNU/Emacs' standard binding for `newline-and-indent': C-j.

;; 2) Add the following hook in your .emacs:

;; (add-hook 'python-mode-hook
;;   #'(lambda ()
;;       (define-key python-mode-map "\C-m" 'newline-and-indent)))

;; I'd recommend the first one since you'll get the same behavior for
;; all modes out-of-the-box.

Fabián Ezequiel Gallina's avatar
Fabián Ezequiel Gallina committed
176 177 178 179 180 181 182 183 184 185 186 187
;;; Installation:

;; Add this to your .emacs:

;; (add-to-list 'load-path "/folder/containing/file")
;; (require 'python)

;;; TODO:

;;; Code:

(require 'ansi-color)
188
(require 'comint)
Fabián Ezequiel Gallina's avatar
Fabián Ezequiel Gallina committed
189 190

(eval-when-compile
191 192 193 194 195
  (require 'cl)
  ;; Avoid compiler warnings
  (defvar view-return-to-alist)
  (defvar compilation-error-regexp-alist)
  (defvar outline-heading-end-regexp))
Fabián Ezequiel Gallina's avatar
Fabián Ezequiel Gallina committed
196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214

(autoload 'comint-mode "comint")

;;;###autoload
(add-to-list 'auto-mode-alist (cons (purecopy "\\.py\\'")  'python-mode))
;;;###autoload
(add-to-list 'interpreter-mode-alist (cons (purecopy "python") 'python-mode))

(defgroup python nil
  "Python Language's flying circus support for Emacs."
  :group 'languages
  :version "23.2"
  :link '(emacs-commentary-link "python"))


;;; Bindings

(defvar python-mode-map
  (let ((map (make-sparse-keymap)))
215 216 217 218 219 220 221
    ;; Movement
    (substitute-key-definition 'backward-sentence
                               'python-nav-backward-sentence
                               map global-map)
    (substitute-key-definition 'forward-sentence
                               'python-nav-forward-sentence
                               map global-map)
222
    (define-key map "\C-c\C-j" 'python-nav-jump-to-defun)
Fabián Ezequiel Gallina's avatar
Fabián Ezequiel Gallina committed
223 224 225 226 227
    ;; Indent specific
    (define-key map "\177" 'python-indent-dedent-line-backspace)
    (define-key map (kbd "<backtab>") 'python-indent-dedent-line)
    (define-key map "\C-c<" 'python-indent-shift-left)
    (define-key map "\C-c>" 'python-indent-shift-right)
228
    (define-key map ":" 'python-indent-electric-colon)
229 230 231 232 233 234 235
    ;; Skeletons
    (define-key map "\C-c\C-tc" 'python-skeleton-class)
    (define-key map "\C-c\C-td" 'python-skeleton-def)
    (define-key map "\C-c\C-tf" 'python-skeleton-for)
    (define-key map "\C-c\C-ti" 'python-skeleton-if)
    (define-key map "\C-c\C-tt" 'python-skeleton-try)
    (define-key map "\C-c\C-tw" 'python-skeleton-while)
Fabián Ezequiel Gallina's avatar
Fabián Ezequiel Gallina committed
236 237 238 239 240 241 242
    ;; Shell interaction
    (define-key map "\C-c\C-s" 'python-shell-send-string)
    (define-key map "\C-c\C-r" 'python-shell-send-region)
    (define-key map "\C-\M-x" 'python-shell-send-defun)
    (define-key map "\C-c\C-c" 'python-shell-send-buffer)
    (define-key map "\C-c\C-l" 'python-shell-send-file)
    (define-key map "\C-c\C-z" 'python-shell-switch-to-shell)
243 244
    ;; Some util commands
    (define-key map "\C-c\C-v" 'python-check)
245
    (define-key map "\C-c\C-f" 'python-eldoc-at-point)
Fabián Ezequiel Gallina's avatar
Fabián Ezequiel Gallina committed
246 247 248 249 250 251 252 253 254 255 256 257 258 259 260
    ;; Utilities
    (substitute-key-definition 'complete-symbol 'completion-at-point
			       map global-map)
    (easy-menu-define python-menu map "Python Mode menu"
      `("Python"
	:help "Python-specific Features"
	["Shift region left" python-indent-shift-left :active mark-active
	 :help "Shift region left by a single indentation step"]
	["Shift region right" python-indent-shift-right :active mark-active
	 :help "Shift region right by a single indentation step"]
	"-"
	["Start of def/class" beginning-of-defun
	 :help "Go to start of outermost definition around point"]
	["End of def/class" end-of-defun
	 :help "Go to end of definition around point"]
261 262 263 264 265
	["Mark def/class" mark-defun
	 :help "Mark outermost definition around point"]
	["Jump to def/class" python-nav-jump-to-defun
	 :help "Jump to a class or function definition"]
        "--"
266
	("Skeletons")
267
        "---"
Fabián Ezequiel Gallina's avatar
Fabián Ezequiel Gallina committed
268 269 270 271 272 273 274 275 276 277 278 279 280 281 282
	["Start interpreter" run-python
	 :help "Run inferior Python process in a separate buffer"]
	["Switch to shell" python-shell-switch-to-shell
	 :help "Switch to running inferior Python process"]
	["Eval string" python-shell-send-string
	 :help "Eval string in inferior Python session"]
	["Eval buffer" python-shell-send-buffer
	 :help "Eval buffer in inferior Python session"]
	["Eval region" python-shell-send-region
	 :help "Eval region in inferior Python session"]
	["Eval defun" python-shell-send-defun
	 :help "Eval defun in inferior Python session"]
	["Eval file" python-shell-send-file
	 :help "Eval file in inferior Python session"]
	["Debugger" pdb :help "Run pdb under GUD"]
283
        "----"
284 285
	["Check file" python-check
	 :help "Check file for errors"]
286 287
	["Help on symbol" python-eldoc-at-point
	 :help "Get help on symbol at point"]
Fabián Ezequiel Gallina's avatar
Fabián Ezequiel Gallina committed
288 289 290 291 292 293 294 295
	["Complete symbol" completion-at-point
	 :help "Complete symbol before point"]))
    map)
  "Keymap for `python-mode'.")


;;; Python specialized rx

296 297 298 299 300 301 302
(eval-when-compile
  (defconst python-rx-constituents
    (list
     `(block-start          . ,(rx symbol-start
                                   (or "def" "class" "if" "elif" "else" "try"
                                       "except" "finally" "for" "while" "with")
                                   symbol-end))
303 304
     `(decorator            . ,(rx line-start (* space) ?@ (any letter ?_)
                                    (* (any word ?_))))
305
     `(defun                . ,(rx symbol-start (or "def" "class") symbol-end))
306
     `(symbol-name          . ,(rx (any letter ?_) (* (any word ?_))))
307 308 309 310 311 312 313 314
     `(open-paren           . ,(rx (or "{" "[" "(")))
     `(close-paren          . ,(rx (or "}" "]" ")")))
     `(simple-operator      . ,(rx (any ?+ ?- ?/ ?& ?^ ?~ ?| ?* ?< ?> ?= ?%)))
     `(not-simple-operator  . ,(rx (not (any ?+ ?- ?/ ?& ?^ ?~ ?| ?* ?< ?> ?= ?%))))
     `(operator             . ,(rx (or "+" "-" "/" "&" "^" "~" "|" "*" "<" ">"
                                       "=" "%" "**" "//" "<<" ">>" "<=" "!="
                                       "==" ">=" "is" "not")))
     `(assignment-operator  . ,(rx (or "=" "+=" "-=" "*=" "/=" "//=" "%=" "**="
315 316
                                       ">>=" "<<=" "&=" "^=" "|="))))
    "Additional Python specific sexps for `python-rx'"))
Fabián Ezequiel Gallina's avatar
Fabián Ezequiel Gallina committed
317 318

(defmacro python-rx (&rest regexps)
319
 "Python mode specialized rx macro which supports common python named REGEXPS."
Fabián Ezequiel Gallina's avatar
Fabián Ezequiel Gallina committed
320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345
 (let ((rx-constituents (append python-rx-constituents rx-constituents)))
   (cond ((null regexps)
          (error "No regexp"))
         ((cdr regexps)
          (rx-to-string `(and ,@regexps) t))
         (t
          (rx-to-string (car regexps) t)))))


;;; Font-lock and syntax

(defvar python-font-lock-keywords
  ;; Keywords
  `(,(rx symbol-start
         (or "and" "del" "from" "not" "while" "as" "elif" "global" "or" "with"
             "assert" "else" "if" "pass" "yield" "break" "except" "import"
             "print" "class" "exec" "in" "raise" "continue" "finally" "is"
             "return" "def" "for" "lambda" "try" "self")
         symbol-end)
    ;; functions
    (,(rx symbol-start "def" (1+ space) (group (1+ (or word ?_))))
     (1 font-lock-function-name-face))
    ;; classes
    (,(rx symbol-start "class" (1+ space) (group (1+ (or word ?_))))
     (1 font-lock-type-face))
    ;; Constants
346 347 348 349 350 351
    (,(rx symbol-start
          ;; copyright, license, credits, quit, exit are added by the
          ;; site module and since they are not intended to be used in
          ;; programs they are not added here either.
          (or "None" "True" "False" "Ellipsis" "__debug__" "NotImplemented")
          symbol-end) . font-lock-constant-face)
Fabián Ezequiel Gallina's avatar
Fabián Ezequiel Gallina committed
352 353 354 355 356 357 358 359 360 361 362 363
    ;; Decorators.
    (,(rx line-start (* (any " \t")) (group "@" (1+ (or word ?_))
                                            (0+ "." (1+ (or word ?_)))))
     (1 font-lock-type-face))
    ;; Builtin Exceptions
    (,(rx symbol-start
          (or "ArithmeticError" "AssertionError" "AttributeError"
              "BaseException" "BufferError" "BytesWarning" "DeprecationWarning"
              "EOFError" "EnvironmentError" "Exception" "FloatingPointError"
              "FutureWarning" "GeneratorExit" "IOError" "ImportError"
              "ImportWarning" "IndentationError" "IndexError" "KeyError"
              "KeyboardInterrupt" "LookupError" "MemoryError" "NameError"
364
              "NotImplementedError" "OSError" "OverflowError"
Fabián Ezequiel Gallina's avatar
Fabián Ezequiel Gallina committed
365 366 367 368 369 370 371 372
              "PendingDeprecationWarning" "ReferenceError" "RuntimeError"
              "RuntimeWarning" "StandardError" "StopIteration" "SyntaxError"
              "SyntaxWarning" "SystemError" "SystemExit" "TabError" "TypeError"
              "UnboundLocalError" "UnicodeDecodeError" "UnicodeEncodeError"
              "UnicodeError" "UnicodeTranslateError" "UnicodeWarning"
              "UserWarning" "ValueError" "Warning" "ZeroDivisionError")
          symbol-end) . font-lock-type-face)
    ;; Builtins
373 374 375 376 377 378 379 380 381 382 383 384 385 386
    (,(rx symbol-start
          (or "_" "__doc__" "__import__" "__name__" "__package__" "abs" "all"
              "any" "apply" "basestring" "bin" "bool" "buffer" "bytearray"
              "bytes" "callable" "chr" "classmethod" "cmp" "coerce" "compile"
              "complex" "delattr" "dict" "dir" "divmod" "enumerate" "eval"
              "execfile" "file" "filter" "float" "format" "frozenset"
              "getattr" "globals" "hasattr" "hash" "help" "hex" "id" "input"
              "int" "intern" "isinstance" "issubclass" "iter" "len" "list"
              "locals" "long" "map" "max" "min" "next" "object" "oct" "open"
              "ord" "pow" "print" "property" "range" "raw_input" "reduce"
              "reload" "repr" "reversed" "round" "set" "setattr" "slice"
              "sorted" "staticmethod" "str" "sum" "super" "tuple" "type"
              "unichr" "unicode" "vars" "xrange" "zip")
          symbol-end) . font-lock-builtin-face)
Fabián Ezequiel Gallina's avatar
Fabián Ezequiel Gallina committed
387 388 389
    ;; asignations
    ;; support for a = b = c = 5
    (,(lambda (limit)
390 391
        (let ((re (python-rx (group (+ (any word ?. ?_)))
                             (? ?\[ (+ (not (any  ?\]))) ?\]) (* space)
Fabián Ezequiel Gallina's avatar
Fabián Ezequiel Gallina committed
392 393
                             assignment-operator)))
          (when (re-search-forward re limit t)
394
            (while (and (python-info-ppss-context 'paren)
Fabián Ezequiel Gallina's avatar
Fabián Ezequiel Gallina committed
395
                        (re-search-forward re limit t)))
396
            (if (and (not (python-info-ppss-context 'paren))
397
                     (not (equal (char-after (point-marker)) ?=)))
Fabián Ezequiel Gallina's avatar
Fabián Ezequiel Gallina committed
398 399 400 401 402 403 404 405 406 407 408
                t
              (set-match-data nil)))))
     (1 font-lock-variable-name-face nil nil))
    ;; support for a, b, c = (1, 2, 3)
    (,(lambda (limit)
        (let ((re (python-rx (group (+ (any word ?. ?_))) (* space)
                             (* ?, (* space) (+ (any word ?. ?_)) (* space))
                             ?, (* space) (+ (any word ?. ?_)) (* space)
                             assignment-operator)))
          (when (and (re-search-forward re limit t)
                     (goto-char (nth 3 (match-data))))
409
            (while (and (python-info-ppss-context 'paren)
Fabián Ezequiel Gallina's avatar
Fabián Ezequiel Gallina committed
410 411
                        (re-search-forward re limit t))
              (goto-char (nth 3 (match-data))))
412
            (if (not (python-info-ppss-context 'paren))
Fabián Ezequiel Gallina's avatar
Fabián Ezequiel Gallina committed
413 414 415 416 417
                t
              (set-match-data nil)))))
     (1 font-lock-variable-name-face nil nil))))

(defconst python-font-lock-syntactic-keywords
418 419
  ;; Make outer chars of matching triple-quote sequences into generic
  ;; string delimiters.  Fixme: Is there a better way?
Fabián Ezequiel Gallina's avatar
Fabián Ezequiel Gallina committed
420
  ;; First avoid a sequence preceded by an odd number of backslashes.
421 422 423 424 425
  `((,(concat "\\(?:\\([RUru]\\)[Rr]?\\|^\\|[^\\]\\(?:\\\\.\\)*\\)" ;Prefix.
            "\\(?:\\('\\)'\\('\\)\\|\\(?2:\"\\)\"\\(?3:\"\\)\\)")
     (3 (python-quote-syntax)))))

(defun python-quote-syntax ()
Fabián Ezequiel Gallina's avatar
Fabián Ezequiel Gallina committed
426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442
  "Put `syntax-table' property correctly on triple quote.
Used for syntactic keywords.  N is the match number (1, 2 or 3)."
  ;; Given a triple quote, we have to check the context to know
  ;; whether this is an opening or closing triple or whether it's
  ;; quoted anyhow, and should be ignored.  (For that we need to do
  ;; the same job as `syntax-ppss' to be correct and it seems to be OK
  ;; to use it here despite initial worries.)  We also have to sort
  ;; out a possible prefix -- well, we don't _have_ to, but I think it
  ;; should be treated as part of the string.

  ;; Test cases:
  ;;  ur"""ar""" x='"' # """
  ;; x = ''' """ ' a
  ;; '''
  ;; x '"""' x """ \"""" x
  (save-excursion
    (goto-char (match-beginning 0))
443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461
    (let ((syntax (save-match-data (syntax-ppss))))
      (cond
       ((eq t (nth 3 syntax))           ; after unclosed fence
        ;; Consider property for the last char if in a fenced string.
        (goto-char (nth 8 syntax))	; fence position
        (skip-chars-forward "uUrR")	; skip any prefix
        ;; Is it a matching sequence?
        (if (eq (char-after) (char-after (match-beginning 2)))
            (put-text-property (match-beginning 3) (match-end 3)
                               'syntax-table (string-to-syntax "|"))))
       ((match-end 1)
        ;; Consider property for initial char, accounting for prefixes.
        (put-text-property (match-beginning 1) (match-end 1)
                           'syntax-table (string-to-syntax "|")))
       (t
        ;; Consider property for initial char, accounting for prefixes.
        (put-text-property (match-beginning 2) (match-end 2)
                           'syntax-table (string-to-syntax "|"))))
      )))
Fabián Ezequiel Gallina's avatar
Fabián Ezequiel Gallina committed
462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502

(defvar python-mode-syntax-table
  (let ((table (make-syntax-table)))
    ;; Give punctuation syntax to ASCII that normally has symbol
    ;; syntax or has word syntax and isn't a letter.
    (let ((symbol (string-to-syntax "_"))
	  (sst (standard-syntax-table)))
      (dotimes (i 128)
	(unless (= i ?_)
	  (if (equal symbol (aref sst i))
	      (modify-syntax-entry i "." table)))))
    (modify-syntax-entry ?$ "." table)
    (modify-syntax-entry ?% "." table)
    ;; exceptions
    (modify-syntax-entry ?# "<" table)
    (modify-syntax-entry ?\n ">" table)
    (modify-syntax-entry ?' "\"" table)
    (modify-syntax-entry ?` "$" table)
    table)
  "Syntax table for Python files.")

(defvar python-dotty-syntax-table
  (let ((table (make-syntax-table python-mode-syntax-table)))
    (modify-syntax-entry ?. "w" table)
    (modify-syntax-entry ?_ "w" table)
    table)
  "Dotty syntax table for Python files.
It makes underscores and dots word constituent chars.")


;;; Indentation

(defcustom python-indent-offset 4
  "Default indentation offset for Python."
  :group 'python
  :type 'integer
  :safe 'integerp)

(defcustom python-indent-guess-indent-offset t
  "Non-nil tells Python mode to guess `python-indent-offset' value."
  :type 'boolean
503 504
  :group 'python
  :safe 'booleanp)
Fabián Ezequiel Gallina's avatar
Fabián Ezequiel Gallina committed
505 506 507 508 509 510 511 512 513 514 515 516 517

(defvar python-indent-current-level 0
  "Current indentation level `python-indent-line-function' is using.")

(defvar python-indent-levels '(0)
  "Levels of indentation available for `python-indent-line-function'.")

(defvar python-indent-dedenters '("else" "elif" "except" "finally")
  "List of words that should be dedented.
These make `python-indent-calculate-indentation' subtract the value of
`python-indent-offset'.")

(defun python-indent-guess-indent-offset ()
518
  "Guess and set `python-indent-offset' for the current buffer."
519 520 521 522 523 524 525 526
    (save-excursion
      (save-restriction
        (widen)
        (goto-char (point-min))
        (let ((found-block))
          (while (and (not found-block)
                      (re-search-forward
                       (python-rx line-start block-start) nil t))
527 528
            (when (and (not (python-info-ppss-context 'string))
                       (not (python-info-ppss-context 'comment))
529 530
                       (progn
                         (goto-char (line-end-position))
531
                         (forward-comment -9999)
532 533 534 535 536 537 538 539 540 541 542
                         (eq ?: (char-before))))
              (setq found-block t)))
          (if (not found-block)
              (message "Can't guess python-indent-offset, using defaults: %s"
                       python-indent-offset)
            (while (and (progn
                          (goto-char (line-end-position))
                          (python-info-continuation-line-p))
                        (not (eobp)))
              (forward-line 1))
            (forward-line 1)
543
            (forward-comment 9999)
544 545 546
            (let ((indent-offset (current-indentation)))
              (when (> indent-offset 0)
                (setq python-indent-offset indent-offset))))))))
Fabián Ezequiel Gallina's avatar
Fabián Ezequiel Gallina committed
547

548 549 550 551
(defun python-indent-context ()
  "Get information on indentation context.
Context information is returned with a cons with the form:
    \(STATUS . START)
Fabián Ezequiel Gallina's avatar
Fabián Ezequiel Gallina committed
552 553 554 555 556 557 558 559 560 561 562 563 564 565 566

Where status can be any of the following symbols:
 * inside-paren: If point in between (), {} or []
 * inside-string: If point is inside a string
 * after-backslash: Previous line ends in a backslash
 * after-beginning-of-block: Point is after beginning of block
 * after-line: Point is after normal line
 * no-indent: Point is at beginning of buffer or other special case
START is the buffer position where the sexp starts."
  (save-restriction
    (widen)
    (let ((ppss (save-excursion (beginning-of-line) (syntax-ppss)))
          (start))
      (cons
       (cond
567
        ;; Beginning of buffer
568 569 570
        ((save-excursion
           (goto-char (line-beginning-position))
           (bobp))
571
         'no-indent)
Fabián Ezequiel Gallina's avatar
Fabián Ezequiel Gallina committed
572
        ;; Inside a paren
573
        ((setq start (python-info-ppss-context 'paren ppss))
Fabián Ezequiel Gallina's avatar
Fabián Ezequiel Gallina committed
574 575
         'inside-paren)
        ;; Inside string
576
        ((setq start (python-info-ppss-context 'string ppss))
Fabián Ezequiel Gallina's avatar
Fabián Ezequiel Gallina committed
577 578
         'inside-string)
        ;; After backslash
579 580
        ((setq start (when (not (or (python-info-ppss-context 'string ppss)
                                    (python-info-ppss-context 'comment ppss)))
Fabián Ezequiel Gallina's avatar
Fabián Ezequiel Gallina committed
581 582 583 584 585 586 587 588 589
                       (let ((line-beg-pos (line-beginning-position)))
                         (when (eq ?\\ (char-before (1- line-beg-pos)))
                           (- line-beg-pos 2)))))
         'after-backslash)
        ;; After beginning of block
        ((setq start (save-excursion
                       (let ((block-regexp (python-rx block-start))
                             (block-start-line-end ":[[:space:]]*$"))
                         (back-to-indentation)
590
                         (forward-comment -9999)
Fabián Ezequiel Gallina's avatar
Fabián Ezequiel Gallina committed
591 592 593 594 595 596 597 598 599 600
                         (back-to-indentation)
                         (when (or (python-info-continuation-line-p)
                                   (and (not (looking-at block-regexp))
                                        (save-excursion
                                          (re-search-forward
                                           block-start-line-end
                                           (line-end-position) t))))
                           (while (and (forward-line -1)
                                       (python-info-continuation-line-p)
                                       (not (bobp))))
601
                           (back-to-indentation)
Fabián Ezequiel Gallina's avatar
Fabián Ezequiel Gallina committed
602 603 604 605 606 607 608
                           (when (not (looking-at block-regexp))
                             (forward-line 1)))
                         (back-to-indentation)
                         (when (and (looking-at block-regexp)
                                    (or (re-search-forward
                                         block-start-line-end
                                         (line-end-position) t)
609 610 611
                                        (save-excursion
                                          (goto-char (line-end-position))
                                          (python-info-continuation-line-p))))
Fabián Ezequiel Gallina's avatar
Fabián Ezequiel Gallina committed
612 613 614 615
                           (point-marker)))))
         'after-beginning-of-block)
        ;; After normal line
        ((setq start (save-excursion
616 617
                       (back-to-indentation)
                       (forward-comment -9999)
618
                       (python-nav-sentence-start)
Fabián Ezequiel Gallina's avatar
Fabián Ezequiel Gallina committed
619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659
                       (point-marker)))
         'after-line)
        ;; Do not indent
        (t 'no-indent))
       start))))

(defun python-indent-calculate-indentation ()
  "Calculate correct indentation offset for the current line."
  (let* ((indentation-context (python-indent-context))
         (context-status (car indentation-context))
         (context-start (cdr indentation-context)))
    (save-restriction
      (widen)
      (save-excursion
        (case context-status
          ('no-indent 0)
          ('after-beginning-of-block
           (goto-char context-start)
           (+ (current-indentation) python-indent-offset))
          ('after-line
           (-
            (save-excursion
              (goto-char context-start)
              (current-indentation))
            (if (progn
                  (back-to-indentation)
                  (looking-at (regexp-opt python-indent-dedenters)))
                python-indent-offset
              0)))
          ('inside-string
           (goto-char context-start)
           (current-indentation))
          ('after-backslash
           (let* ((block-continuation
                   (save-excursion
                     (forward-line -1)
                     (python-info-block-continuation-line-p)))
                  (assignment-continuation
                   (save-excursion
                     (forward-line -1)
                     (python-info-assignment-continuation-line-p)))
660 661 662 663 664
                  (dot-continuation
                   (save-excursion
                     (back-to-indentation)
                     (when (looking-at "\\.")
                       (forward-line -1)
665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696
                       (goto-char (line-end-position))
                       (while (and (re-search-backward "\\." (line-beginning-position) t)
                                   (or (python-info-ppss-context 'comment)
                                       (python-info-ppss-context 'string)
                                       (python-info-ppss-context 'paren))))
                       (if (and (looking-at "\\.")
                                (not (or (python-info-ppss-context 'comment)
                                         (python-info-ppss-context 'string)
                                         (python-info-ppss-context 'paren))))
                           (current-column)
                         (+ (current-indentation) python-indent-offset)))))
                  (indentation (cond
                                (dot-continuation
                                 dot-continuation)
                                (block-continuation
                                 (goto-char block-continuation)
                                 (re-search-forward
                                  (python-rx block-start (* space))
                                  (line-end-position) t)
                                 (current-column))
                                (assignment-continuation
                                 (goto-char assignment-continuation)
                                 (re-search-forward
                                  (python-rx simple-operator)
                                  (line-end-position) t)
                                 (forward-char 1)
                                 (re-search-forward
                                  (python-rx (* space))
                                  (line-end-position) t)
                                 (current-column))
                                (t
                                 (goto-char context-start)
697 698 699 700 701
                                 (if (not
                                      (save-excursion
                                        (back-to-indentation)
                                        (looking-at
                                         "\\(?:return\\|from\\|import\\)\s+")))
702 703
                                     (current-indentation)
                                   (+ (current-indentation)
704 705
                                      (length
                                       (match-string-no-properties 0))))))))
Fabián Ezequiel Gallina's avatar
Fabián Ezequiel Gallina committed
706 707
             indentation))
          ('inside-paren
708
           (or (save-excursion
709
                 (skip-syntax-forward "\s" (line-end-position))
710 711 712
                 (when (and (looking-at (regexp-opt '(")" "]" "}")))
                            (not (forward-char 1))
                            (not (python-info-ppss-context 'paren)))
713 714 715 716 717 718 719 720 721 722 723
                   (goto-char context-start)
                   (back-to-indentation)
                   (current-column)))
               (-
                (save-excursion
                  (goto-char context-start)
                  (forward-char)
                  (save-restriction
                    (narrow-to-region
                     (line-beginning-position)
                     (line-end-position))
724
                    (forward-comment 9999))
725 726
                  (if (looking-at "$")
                      (+ (current-indentation) python-indent-offset)
727
                    (forward-comment 9999)
728 729 730 731 732 733
                    (current-column)))
                (if (progn
                      (back-to-indentation)
                      (looking-at (regexp-opt '(")" "]" "}"))))
                    python-indent-offset
                  0)))))))))
Fabián Ezequiel Gallina's avatar
Fabián Ezequiel Gallina committed
734 735 736 737 738 739

(defun python-indent-calculate-levels ()
  "Calculate `python-indent-levels' and reset `python-indent-current-level'."
  (let* ((indentation (python-indent-calculate-indentation))
         (remainder (% indentation python-indent-offset))
         (steps (/ (- indentation remainder) python-indent-offset)))
740
    (setq python-indent-levels (list 0))
Fabián Ezequiel Gallina's avatar
Fabián Ezequiel Gallina committed
741
    (dotimes (step steps)
742
      (push (* python-indent-offset (1+ step)) python-indent-levels))
Fabián Ezequiel Gallina's avatar
Fabián Ezequiel Gallina committed
743
    (when (not (eq 0 remainder))
744
      (push (+ (* python-indent-offset steps) remainder) python-indent-levels))
Fabián Ezequiel Gallina's avatar
Fabián Ezequiel Gallina committed
745 746 747 748 749 750 751 752 753 754 755 756 757
    (setq python-indent-levels (nreverse python-indent-levels))
    (setq python-indent-current-level (1- (length python-indent-levels)))))

(defun python-indent-toggle-levels ()
  "Toggle `python-indent-current-level' over `python-indent-levels'."
  (setq python-indent-current-level (1- python-indent-current-level))
  (when (< python-indent-current-level 0)
    (setq python-indent-current-level (1- (length python-indent-levels)))))

(defun python-indent-line (&optional force-toggle)
  "Internal implementation of `python-indent-line-function'.
Uses the offset calculated in
`python-indent-calculate-indentation' and available levels
758 759
indicated by the variable `python-indent-levels' to set the
current indentation.
Fabián Ezequiel Gallina's avatar
Fabián Ezequiel Gallina committed
760 761

When the variable `last-command' is equal to
762 763 764 765
`indent-for-tab-command' or FORCE-TOGGLE is non-nil it cycles
levels indicated in the variable `python-indent-levels' by
setting the current level in the variable
`python-indent-current-level'.
Fabián Ezequiel Gallina's avatar
Fabián Ezequiel Gallina committed
766 767

When the variable `last-command' is not equal to
768 769 770 771 772
`indent-for-tab-command' and FORCE-TOGGLE is nil it calculates
possible indentation levels and saves it in the variable
`python-indent-levels'.  Afterwards it sets the variable
`python-indent-current-level' correctly so offset is equal
to (`nth' `python-indent-current-level' `python-indent-levels')"
Fabián Ezequiel Gallina's avatar
Fabián Ezequiel Gallina committed
773 774 775
  (if (or (and (eq this-command 'indent-for-tab-command)
               (eq last-command this-command))
          force-toggle)
776 777 778
      (if (not (equal python-indent-levels '(0)))
          (python-indent-toggle-levels)
        (python-indent-calculate-levels))
Fabián Ezequiel Gallina's avatar
Fabián Ezequiel Gallina committed
779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794
    (python-indent-calculate-levels))
  (beginning-of-line)
  (delete-horizontal-space)
  (indent-to (nth python-indent-current-level python-indent-levels))
  (save-restriction
    (widen)
    (let ((closing-block-point (python-info-closing-block)))
      (when closing-block-point
        (message "Closes %s" (buffer-substring
                              closing-block-point
                              (save-excursion
                                (goto-char closing-block-point)
                                (line-end-position))))))))

(defun python-indent-line-function ()
  "`indent-line-function' for Python mode.
795
See `python-indent-line' for details."
Fabián Ezequiel Gallina's avatar
Fabián Ezequiel Gallina committed
796 797 798
  (python-indent-line))

(defun python-indent-dedent-line ()
799
  "De-indent current line."
Fabián Ezequiel Gallina's avatar
Fabián Ezequiel Gallina committed
800
  (interactive "*")
801 802
  (when (and (not (or (python-info-ppss-context 'string)
                      (python-info-ppss-context 'comment)))
Fabián Ezequiel Gallina's avatar
Fabián Ezequiel Gallina committed
803 804 805 806 807 808 809 810
             (<= (point-marker) (save-excursion
                                  (back-to-indentation)
                                  (point-marker)))
             (> (current-column) 0))
    (python-indent-line t)
    t))

(defun python-indent-dedent-line-backspace (arg)
811
  "De-indent current line.
Fabián Ezequiel Gallina's avatar
Fabián Ezequiel Gallina committed
812
Argument ARG is passed to `backward-delete-char-untabify' when
813
point is  not in between the indentation."
Fabián Ezequiel Gallina's avatar
Fabián Ezequiel Gallina committed
814 815 816
  (interactive "*p")
  (when (not (python-indent-dedent-line))
    (backward-delete-char-untabify arg)))
817
(put 'python-indent-dedent-line-backspace 'delete-selection 'supersede)
Fabián Ezequiel Gallina's avatar
Fabián Ezequiel Gallina committed
818 819 820 821 822

(defun python-indent-region (start end)
  "Indent a python region automagically.

Called from a program, START and END specify the region to indent."
823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841
  (let ((deactivate-mark nil))
    (save-excursion
      (goto-char end)
      (setq end (point-marker))
      (goto-char start)
      (or (bolp) (forward-line 1))
      (while (< (point) end)
        (or (and (bolp) (eolp))
            (let (word)
              (forward-line -1)
              (back-to-indentation)
              (setq word (current-word))
              (forward-line 1)
              (when word
                (beginning-of-line)
                (delete-horizontal-space)
                (indent-to (python-indent-calculate-indentation)))))
        (forward-line 1))
      (move-marker end nil))))
Fabián Ezequiel Gallina's avatar
Fabián Ezequiel Gallina committed
842 843 844

(defun python-indent-shift-left (start end &optional count)
  "Shift lines contained in region START END by COUNT columns to the left.
845 846 847 848
COUNT defaults to `python-indent-offset'.  If region isn't
active, the current line is shifted.  The shifted region includes
the lines in which START and END lie.  An error is signaled if
any lines in the region are indented less than COUNT columns."
Fabián Ezequiel Gallina's avatar
Fabián Ezequiel Gallina committed
849 850 851 852 853 854 855 856
  (interactive
   (if mark-active
       (list (region-beginning) (region-end) current-prefix-arg)
     (list (line-beginning-position) (line-end-position) current-prefix-arg)))
  (if count
      (setq count (prefix-numeric-value count))
    (setq count python-indent-offset))
  (when (> count 0)
857 858 859 860 861 862 863 864 865
    (let ((deactivate-mark nil))
      (save-excursion
        (goto-char start)
        (while (< (point) end)
          (if (and (< (current-indentation) count)
                   (not (looking-at "[ \t]*$")))
              (error "Can't shift all lines enough"))
          (forward-line))
        (indent-rigidly start end (- count))))))
Fabián Ezequiel Gallina's avatar
Fabián Ezequiel Gallina committed
866 867 868 869 870

(add-to-list 'debug-ignored-errors "^Can't shift all lines enough")

(defun python-indent-shift-right (start end &optional count)
  "Shift lines contained in region START END by COUNT columns to the left.
871 872 873
COUNT defaults to `python-indent-offset'.  If region isn't
active, the current line is shifted.  The shifted region includes
the lines in which START and END lie."
Fabián Ezequiel Gallina's avatar
Fabián Ezequiel Gallina committed
874 875 876 877
  (interactive
   (if mark-active
       (list (region-beginning) (region-end) current-prefix-arg)
     (list (line-beginning-position) (line-end-position) current-prefix-arg)))
878 879 880 881 882
  (let ((deactivate-mark nil))
    (if count
        (setq count (prefix-numeric-value count))
      (setq count python-indent-offset))
    (indent-rigidly start end count)))
Fabián Ezequiel Gallina's avatar
Fabián Ezequiel Gallina committed
883

884
(defun python-indent-electric-colon (arg)
885 886 887
  "Insert a colon and maybe de-indent the current line.
With numeric ARG, just insert that many colons.  With
\\[universal-argument], just insert a single colon."
888 889
  (interactive "*P")
  (self-insert-command (if (not (integerp arg)) 1 arg))
890 891 892 893 894 895 896 897 898 899 900 901
  (when (and (not arg)
             (eolp)
             (not (equal ?: (char-after (- (point-marker) 2))))
             (not (or (python-info-ppss-context 'string)
                      (python-info-ppss-context 'comment))))
    (let ((indentation (current-indentation))
          (calculated-indentation (python-indent-calculate-indentation)))
      (when (> indentation calculated-indentation)
        (save-excursion
          (indent-line-to calculated-indentation)
          (when (not (python-info-closing-block))
            (indent-line-to indentation)))))))
902 903
(put 'python-indent-electric-colon 'delete-selection t)

Fabián Ezequiel Gallina's avatar
Fabián Ezequiel Gallina committed
904 905 906

;;; Navigation

907
(defvar python-nav-beginning-of-defun-regexp
908
  (python-rx line-start (* space) defun (+ space) (group symbol-name))
909
  "Regexp matching class or function definition.
910 911
The name of the defun should be grouped so it can be retrieved
via `match-string'.")
Fabián Ezequiel Gallina's avatar
Fabián Ezequiel Gallina committed
912

913
(defun python-nav-beginning-of-defun (&optional nodecorators)
914
  "Move point to `beginning-of-defun'.
915 916
When NODECORATORS is non-nil decorators are not included.  This
is the main part of`python-beginning-of-defun-function'
917
implementation.  Return non-nil if point is moved to the
918
`beginning-of-defun'."
919 920 921
  (let ((indent-pos (save-excursion
                      (back-to-indentation)
                      (point-marker)))
922
        (found)
923 924
        (include-decorators
         (lambda ()
925 926 927 928 929 930 931 932
           (when (not nodecorators)
             (when (save-excursion
                     (forward-line -1)
                     (looking-at (python-rx decorator)))
               (while (and (not (bobp))
                           (forward-line -1)
                           (looking-at (python-rx decorator))))
               (when (not (bobp)) (forward-line 1)))))))
933 934 935 936
    (if (and (> (point) indent-pos)
             (save-excursion
               (goto-char (line-beginning-position))
               (looking-at python-nav-beginning-of-defun-regexp)))
Fabián Ezequiel Gallina's avatar
Fabián Ezequiel Gallina committed
937
        (progn
938
          (goto-char (line-beginning-position))
939 940
          (funcall include-decorators)
          (setq found t))
941
      (goto-char (line-beginning-position))
942 943
      (when (re-search-backward python-nav-beginning-of-defun-regexp nil t)
        (setq found t))
944
      (goto-char (or (python-info-ppss-context 'string) (point)))
945 946
      (funcall include-decorators))
    found))
947

948
(defun python-beginning-of-defun-function (&optional arg nodecorators)
949 950
  "Move point to the beginning of def or class.
With positive ARG move that number of functions forward.  With
951
negative do the same but backwards.  When NODECORATORS is non-nil
952
decorators are not included.  Return non-nil if point is moved to the
953
`beginning-of-defun'."
954 955
  (when (or (null arg) (= arg 0)) (setq arg 1))
  (if (> arg 0)
956 957 958 959
      (dotimes (i arg (python-nav-beginning-of-defun nodecorators)))
    (let ((found))
      (dotimes (i (- arg) found)
        (python-end-of-defun-function)
960
        (forward-comment 9999)
961 962 963 964
        (goto-char (line-end-position))
        (when (not (eobp))
          (setq found
                (python-nav-beginning-of-defun nodecorators)))))))
Fabián Ezequiel Gallina's avatar
Fabián Ezequiel Gallina committed
965 966 967 968

(defun python-end-of-defun-function ()
  "Move point to the end of def or class.
Returns nil if point is not in a def or class."
969 970 971 972 973 974 975 976 977 978 979 980 981 982 983
  (interactive)
  (let ((beg-defun-indent)
        (decorator-regexp "[[:space:]]*@"))
    (when (looking-at decorator-regexp)
      (while (and (not (eobp))
                  (forward-line 1)
                  (looking-at decorator-regexp))))
    (when (not (looking-at python-nav-beginning-of-defun-regexp))
      (python-beginning-of-defun-function))
    (setq beg-defun-indent (current-indentation))
    (forward-line 1)
    (while (and (forward-line 1)
                (not (eobp))
                (or (not (current-word))
                    (> (current-indentation) beg-defun-indent))))
984
    (forward-comment 9999)
985
    (goto-char (line-beginning-position))))
Fabián Ezequiel Gallina's avatar
Fabián Ezequiel Gallina committed
986

987 988 989 990 991 992 993 994 995
(defun python-nav-sentence-start ()
  "Move to start of current sentence."
  (interactive "^")
  (while (and (not (back-to-indentation))
              (not (bobp))
              (when (or
                     (save-excursion
                       (forward-line -1)
                       (python-info-line-ends-backslash-p))
996
                     (python-info-ppss-context 'string)
997 998 999 1000 1001 1002 1003 1004 1005 1006
                     (python-info-ppss-context 'paren))
                  (forward-line -1)))))

(defun python-nav-sentence-end ()
  "Move to end of current sentence."
  (interactive "^")
  (while (and (goto-char (line-end-position))
              (not (eobp))
              (when (or
                     (python-info-line-ends-backslash-p)
1007
                     (python-info-ppss-context 'string)
1008 1009 1010
                     (python-info-ppss-context 'paren))
                  (forward-line 1)))))

1011
(defun python-nav-backward-sentence (&optional arg)
1012
  "Move backward to start of sentence.  With ARG, do it arg times.
1013 1014 1015 1016 1017 1018
See `python-nav-forward-sentence' for more information."
  (interactive "^p")
  (or arg (setq arg 1))
  (python-nav-forward-sentence (- arg)))

(defun python-nav-forward-sentence (&optional arg)
1019
  "Move forward to next end of sentence.  With ARG, repeat.
1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034
With negative argument, move backward repeatedly to start of sentence."
  (interactive "^p")
  (or arg (setq arg 1))
  (while (> arg 0)
    (forward-comment 9999)
    (python-nav-sentence-end)
    (forward-line 1)
    (setq arg (1- arg)))
  (while (< arg 0)
    (python-nav-sentence-end)
    (forward-comment -9999)
    (python-nav-sentence-start)
    (forward-line -1)
    (setq arg (1+ arg))))

1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079
(defun python-nav-list-defun-positions (&optional include-type)
  "Make an Alist of defun names and point markers for current buffer.
When optional argument INCLUDE-TYPE is non-nil the type is
included the defun name."
  (let ((defs))
    (save-restriction
      (widen)
      (save-excursion
        (goto-char (point-max))
        (while (re-search-backward python-nav-beginning-of-defun-regexp nil t)
          (when (and (not (python-info-ppss-context 'string))
                     (not (python-info-ppss-context 'comment))
                     (not (python-info-ppss-context 'parent)))
            (add-to-list
             'defs (cons
                    (python-info-current-defun include-type)
                    (point-marker)))))
        defs))))

(defun python-nav-read-defun ()
  "Read a defun name of current buffer and return its point marker.
A cons cell with the form (DEFUN-NAME . POINT-MARKER) is returned
when defun is completed, else nil."
  (let ((defs (python-nav-list-defun-positions)))
    (minibuffer-with-setup-hook
        (lambda ()
          (setq minibuffer-completion-table (mapcar 'car defs)))
      (let ((stringdef
             (read-from-minibuffer
              "Jump to definition: " nil
              minibuffer-local-must-match-map)))
        (when (not (string= stringdef ""))
          (assoc-string stringdef defs))))))

(defun python-nav-jump-to-defun (def)
  "Jump to the definition of DEF in current file."
  (interactive
   (list (python-nav-read-defun)))
  (when (not (called-interactively-p 'interactive))
    (setq def (assoc-string def (python-nav-list-defun-positions))))
  (let ((def-marker (cdr def)))
    (when (markerp def-marker)
      (goto-char (marker-position def-marker))
      (back-to-indentation))))

Fabián Ezequiel Gallina's avatar
Fabián Ezequiel Gallina committed
1080 1081 1082

;;; Shell integration

1083 1084 1085 1086 1087
(defcustom python-shell-buffer-name "Python"
  "Default buffer name for Python interpreter."
  :type 'string
  :group 'python
  :safe 'stringp)
Fabián Ezequiel Gallina's avatar
Fabián Ezequiel Gallina committed
1088 1089 1090 1091

(defcustom python-shell-interpreter "python"
  "Default Python interpreter for shell."
  :type 'string
1092
  :group 'python
Fabián Ezequiel Gallina's avatar
Fabián Ezequiel Gallina committed
1093 1094
  :safe 'stringp)

1095 1096 1097 1098 1099
(defcustom python-shell-internal-buffer-name "Python Internal"
  "Default buffer name for the Internal Python interpreter."
  :type 'string
  :group 'python
  :safe 'stringp)
1100

Fabián Ezequiel Gallina's avatar
Fabián Ezequiel Gallina committed
1101 1102 1103
(defcustom python-shell-interpreter-args "-i"
  "Default arguments for the Python interpreter."
  :type 'string
1104
  :group 'python
Fabián Ezequiel Gallina's avatar
Fabián Ezequiel Gallina committed
1105 1106 1107
  :safe 'stringp)

(defcustom python-shell-prompt-regexp ">>> "
1108 1109
  "Regular Expression matching top\-level input prompt of python shell.
It should not contain a caret (^) at the beginning."
Fabián Ezequiel Gallina's avatar
Fabián Ezequiel Gallina committed
1110 1111 1112 1113 1114
  :type 'string
  :group 'python
  :safe 'stringp)

(defcustom python-shell-prompt-block-regexp "[.][.][.] "
1115 1116
  "Regular Expression matching block input prompt of python shell.
It should not contain a caret (^) at the beginning."
Fabián Ezequiel Gallina's avatar
Fabián Ezequiel Gallina committed
1117 1118 1119 1120
  :type 'string
  :group 'python
  :safe 'stringp)

1121
(defcustom python-shell-prompt-output-regexp ""
1122 1123
  "Regular Expression matching output prompt of python shell.
It should not contain a caret (^) at the beginning."
1124 1125 1126 1127
  :type 'string
  :group 'python
  :safe 'stringp)

Fabián Ezequiel Gallina's avatar
Fabián Ezequiel Gallina committed
1128
(defcustom python-shell-prompt-pdb-regexp "[(<]*[Ii]?[Pp]db[>)]+ "
1129 1130
  "Regular Expression matching pdb input prompt of python shell.
It should not contain a caret (^) at the beginning."
Fabián Ezequiel Gallina's avatar
Fabián Ezequiel Gallina committed
1131 1132 1133 1134
  :type 'string
  :group 'python
  :safe 'stringp)

1135 1136 1137 1138
(defcustom python-shell-send-setup-max-wait 5
  "Seconds to wait for process output before code setup.
If output is received before the especified time then control is
returned in that moment and not after waiting."
1139
  :type 'integer
1140
  :group 'python
1141
  :safe 'integerp)
1142

1143
(defcustom python-shell-process-environment nil
1144 1145
  "List of environment variables for Python shell.
This variable follows the same rules as `process-environment'
1146 1147
since it merges with it before the process creation routines are
called.  When this variable is nil, the Python shell is run with
1148
the default `process-environment'."
1149 1150 1151 1152
  :type '(repeat string)
  :group 'python
  :safe 'listp)

1153 1154 1155 1156 1157 1158 1159 1160
(defcustom python-shell-extra-pythonpaths nil
  "List of extra pythonpaths for Python shell.
The values of this variable are added to the existing value of
PYTHONPATH in the `process-environment' variable."
  :type '(repeat string)
  :group 'python
  :safe 'listp)

1161 1162 1163 1164 1165 1166 1167 1168 1169 1170
(defcustom python-shell-exec-path nil
  "List of path to search for binaries.
This variable follows the same rules as `exec-path' since it
merges with it before the process creation routines are called.
When this variable is nil, the Python shell is run with the
default `exec-path'."
  :type '(repeat string)
  :group 'python
  :safe 'listp)

1171 1172 1173 1174 1175 1176 1177 1178 1179 1180
(defcustom python-shell-virtualenv-path nil
  "Path to virtualenv root.
This variable, when set to a string, makes the values stored in
`python-shell-process-environment' and `python-shell-exec-path'
to be modified properly so shells are started with the specified
virtualenv."
  :type 'string
  :group 'python
  :safe 'stringp)

1181 1182 1183 1184
(defcustom python-shell-setup-codes '(python-shell-completion-setup-code
                                      python-ffap-setup-code
                                      python-eldoc-setup-code)
  "List of code run by `python-shell-send-setup-codes'.
1185
Each variable can contain either a simple string with the code to
1186 1187 1188 1189 1190 1191 1192
execute or a cons with the form (CODE . DESCRIPTION), where CODE
is a string with the code to execute and DESCRIPTION is the
description of it."
  :type '(repeat symbol)
  :group 'python
  :safe 'listp)

Fabián Ezequiel Gallina's avatar
Fabián Ezequiel Gallina committed
1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212
(defcustom python-shell-compilation-regexp-alist
  `((,(rx line-start (1+ (any " \t")) "File \""
	  (group (1+ (not (any "\"<")))) ; avoid `<stdin>' &c
	  "\", line " (group (1+ digit)))
     1 2)
    (,(rx " in file " (group (1+ not-newline)) " on line "
	  (group (1+ digit)))
     1 2)
    (,(rx line-start "> " (group (1+ (not (any "(\"<"))))
	  "(" (group (1+ digit)) ")" (1+ (not (any "("))) "()")
     1 2))
  "`compilation-error-regexp-alist' for inferior Python."
  :type '(alist string)
  :group 'python)

(defun python-shell-get-process-name (dedicated)
  "Calculate the appropiate process name for inferior Python process.
If DEDICATED is t and the variable `buffer-file-name' is non-nil
returns a string with the form
`python-shell-buffer-name'[variable `buffer-file-name'] else
1213 1214 1215
returns the value of `python-shell-buffer-name'.  After
calculating the process name adds the buffer name for the process
in the `same-window-buffer-names' list."
Fabián Ezequiel Gallina's avatar
Fabián Ezequiel Gallina committed
1216 1217 1218 1219 1220 1221 1222 1223 1224