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annotate src/line-number.h @ 5914:bd4d2c8ef9cc

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Use the existing C-level line number cache within #'line-number. src/ChangeLog addition: 2015-05-15 Aidan Kehoe <kehoea@parhasard.net> * buffer.c: * buffer.c (Fline_number): New C implementation, using the line number cache of line-number.c, with a new optional BUFFER argument. * buffer.c (syms_of_buffer): Make it available to Lisp. * line-number.c (buffer_line_number): New argument, RESPECT-NARROWING, describing whether to count from the beginning of the visible region or from the beginning of the buffer. * line-number.h: * line-number.h (buffer_line_number): Update its declaration. * redisplay.c (window_line_number): Call it with the new argument. lisp/ChangeLog addition: 2015-05-15 Aidan Kehoe <kehoea@parhasard.net> * simple.el: * simple.el (line-number): Moved to buffer.c; we have an existing line number cache in C, it's a shame not to have it available.
author Aidan Kehoe <kehoea@parhasard.net>
date Fri, 15 May 2015 18:11:47 +0100
parents 308d34e9f07d
children
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1 /* Copyright (C) 1997, Free Software Foundation, Inc.
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2
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3 This file is part of XEmacs.
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4
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5 XEmacs is free software: you can redistribute it and/or modify it
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6 under the terms of the GNU General Public License as published by the
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7 Free Software Foundation, either version 3 of the License, or (at your
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8 option) any later version.
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9
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10 XEmacs is distributed in the hope that it will be useful, but WITHOUT
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11 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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12 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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13 for more details.
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15 You should have received a copy of the GNU General Public License
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16 along with XEmacs. If not, see <http://www.gnu.org/licenses/>. */
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18 #ifndef INCLUDED_line_number_h_
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19 #define INCLUDED_line_number_h_
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20
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21 /* Synched up with: Not in FSF. */
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23 void narrow_line_number_cache (struct buffer *);
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24 void insert_invalidate_line_number_cache (struct buffer *, Charbpos,
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25 const Ibyte *, Bytecount);
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26 void delete_invalidate_line_number_cache (struct buffer *, Charbpos, Charbpos);
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28 EMACS_INT buffer_line_number (struct buffer *, Charbpos, int, Boolint);
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30 #endif /* INCLUDED_line_number_h_ */