src/indent.h

   1 /* Definitions for interface to indent.c
   2    Copyright (C) 1985-1986, 2001-2015 Free Software Foundation, Inc.
   3
   4 This file is part of GNU Emacs.
   5
   6 GNU Emacs is free software: you can redistribute it and/or modify
   7 it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation, either version 3 of the License, or
   9 (at your option) any later version.
  10
  11 GNU Emacs is distributed in the hope that it will be useful,
  12 but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 GNU General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
  18
  19 struct position
  20   {
  21     ptrdiff_t bufpos;
  22     ptrdiff_t bytepos;
  23     EMACS_INT hpos;
  24     EMACS_INT vpos;
  25     EMACS_INT prevhpos;
  26     int contin;
  27   };
  28
  29 struct position *compute_motion (ptrdiff_t from, ptrdiff_t frombyte,
  30                                  EMACS_INT fromvpos, EMACS_INT fromhpos,
  31                                  bool did_motion, ptrdiff_t to,
  32                                  EMACS_INT tovpos, EMACS_INT tohpos,
  33                                  EMACS_INT width, ptrdiff_t hscroll,
  34                                  int tab_offset, struct window *);
  35 struct position *vmotion (ptrdiff_t from, ptrdiff_t from_byte,
  36                           EMACS_INT vtarget, struct window *);
  37 ptrdiff_t skip_invisible (ptrdiff_t pos, ptrdiff_t *next_boundary_p,
  38                           ptrdiff_t to, Lisp_Object window);
  39
  40 /* Value of point when current_column was called */
  41 extern ptrdiff_t last_known_column_point;
  42
  43 /* Functions for dealing with the column cache.  */
  44
  45 /* Return true if the display table DISPTAB specifies the same widths
  46    for characters as WIDTHTAB.  We use this to decide when to
  47    invalidate the buffer's column_cache.  */
  48 bool disptab_matches_widthtab (struct Lisp_Char_Table *disptab,
  49                                struct Lisp_Vector *widthtab);
  50
  51 /* Recompute BUF's width table, using the display table DISPTAB.  */
  52 void recompute_width_table (struct buffer *buf,
  53                             struct Lisp_Char_Table *disptab);