src/indent.h

   1 /* Definitions for interface to indent.c
   2    Copyright (C) 1985-1986, 2001-2017 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 (at
   9 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 <https://www.gnu.org/licenses/>.  */
  18
  19 #ifndef EMACS_INDENT_H
  20 #define EMACS_INDENT_H
  21
  22 #include "lisp.h"
  23
  24 struct position
  25   {
  26     ptrdiff_t bufpos;
  27     ptrdiff_t bytepos;
  28     EMACS_INT hpos;
  29     EMACS_INT vpos;
  30     EMACS_INT prevhpos;
  31     int contin;
  32   };
  33
  34 struct position *compute_motion (ptrdiff_t from, ptrdiff_t frombyte,
  35                                  EMACS_INT fromvpos, EMACS_INT fromhpos,
  36                                  bool did_motion, ptrdiff_t to,
  37                                  EMACS_INT tovpos, EMACS_INT tohpos,
  38                                  EMACS_INT width, ptrdiff_t hscroll,
  39                                  int tab_offset, struct window *);
  40 struct position *vmotion (ptrdiff_t from, ptrdiff_t from_byte,
  41                           EMACS_INT vtarget, struct window *);
  42 ptrdiff_t skip_invisible (ptrdiff_t pos, ptrdiff_t *next_boundary_p,
  43                           ptrdiff_t to, Lisp_Object window);
  44
  45 /* Value of point when current_column was called */
  46 extern ptrdiff_t last_known_column_point;
  47
  48 /* Functions for dealing with the column cache.  */
  49
  50 /* Return true if the display table DISPTAB specifies the same widths
  51    for characters as WIDTHTAB.  We use this to decide when to
  52    invalidate the buffer's column_cache.  */
  53 bool disptab_matches_widthtab (struct Lisp_Char_Table *disptab,
  54                                struct Lisp_Vector *widthtab);
  55
  56 /* Recompute BUF's width table, using the display table DISPTAB.  */
  57 void recompute_width_table (struct buffer *buf,
  58                             struct Lisp_Char_Table *disptab);
  59
  60 #endif /* EMACS_INDENT_H */