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4ed46869 | 1 | /* Declarations having to do with Emacs category tables. |
7976eda0 | 2 | Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, |
5df4f04c | 3 | 2005, 2006, 2007, 2008, 2009, 2010, 2011 |
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4 | National Institute of Advanced Industrial Science and Technology (AIST) |
5 | Registration Number H14PRO021 | |
8f924df7 | 6 | Copyright (C) 2003 |
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7 | National Institute of Advanced Industrial Science and Technology (AIST) |
8 | Registration Number H13PRO009 | |
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9 | |
10 | This file is part of GNU Emacs. | |
11 | ||
b9b1cc14 | 12 | GNU Emacs is free software: you can redistribute it and/or modify |
4ed46869 | 13 | it under the terms of the GNU General Public License as published by |
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14 | the Free Software Foundation, either version 3 of the License, or |
15 | (at your option) any later version. | |
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16 | |
17 | GNU Emacs is distributed in the hope that it will be useful, | |
18 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
19 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
20 | GNU General Public License for more details. | |
21 | ||
22 | You should have received a copy of the GNU General Public License | |
b9b1cc14 | 23 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
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24 | |
25 | ||
26 | /* We introduce here three types of object: category, category set, | |
27 | and category table. | |
28 | ||
29 | A category is like syntax but differs in the following points: | |
30 | ||
31 | o A category is represented by a mnemonic character of the range | |
32 | ` '(32)..`~'(126) (printable ASCII characters). | |
33 | ||
34 | o A category is not exclusive, i.e. a character has multiple | |
35 | categories (category set). Of course, there's a case that a | |
36 | category set is empty, i.e. the character has no category. | |
37 | ||
38 | o In addition to the predefined categories, a user can define new | |
39 | categories. Total number of categories is limited to 95. | |
40 | ||
41 | A category set is a set of categories represented by Lisp | |
cecda314 | 42 | bool-vector of length 128 (only elements of 31th through 126th |
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43 | are used). |
44 | ||
45 | A category table is like syntax-table, represented by a Lisp | |
46 | char-table. The contents are category sets or nil. It has two | |
cecda314 | 47 | extra slots, for a vector of doc string of each category and a |
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48 | version number. |
49 | ||
50 | The first extra slot is a vector of doc strings of categories, the | |
51 | length is 95. The Nth element corresponding to the category N+32. | |
52 | ||
53 | The second extra slot is a version number of the category table. | |
54 | But, for the moment, we are not using this slot. */ | |
55 | ||
d311d28c | 56 | #define CATEGORYP(x) RANGED_INTEGERP (0x20, x, 0x7E) |
4ed46869 | 57 | |
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58 | #define CHECK_CATEGORY(x) \ |
59 | CHECK_TYPE (CATEGORYP (x), Qcategoryp, x) | |
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60 | |
61 | #define XCATEGORY_SET XBOOL_VECTOR | |
62 | ||
63 | #define CATEGORY_SET_P(x) \ | |
0703a717 | 64 | (BOOL_VECTOR_P (x) && XBOOL_VECTOR (x)->size == 128) |
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65 | |
66 | /* Return a new empty category set. */ | |
67 | #define MAKE_CATEGORY_SET (Fmake_bool_vector (make_number (128), Qnil)) | |
68 | ||
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69 | #define CHECK_CATEGORY_SET(x) \ |
70 | CHECK_TYPE (CATEGORY_SET_P (x), Qcategorysetp, x) | |
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71 | |
72 | /* Return 1 if CATEGORY_SET contains CATEGORY, else return 0. | |
73 | The faster version of `!NILP (Faref (category_set, category))'. */ | |
74 | #define CATEGORY_MEMBER(category, category_set) \ | |
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75 | (XCATEGORY_SET (category_set)->data[(category) / 8] \ |
76 | & (1 << ((category) % 8))) | |
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77 | |
78 | /* Temporary internal variable used in macro CHAR_HAS_CATEGORY. */ | |
79 | extern Lisp_Object _temp_category_set; | |
80 | ||
81 | /* Return 1 if category set of CH contains CATEGORY, elt return 0. */ | |
82 | #define CHAR_HAS_CATEGORY(ch, category) \ | |
83 | (_temp_category_set = CATEGORY_SET (ch), \ | |
84 | CATEGORY_MEMBER (category, _temp_category_set)) | |
85 | ||
86 | /* The standard category table is stored where it will automatically | |
87 | be used in all new buffers. */ | |
4b4deea2 | 88 | #define Vstandard_category_table BVAR (&buffer_defaults, category_table) |
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89 | |
90 | /* Return the category set of character C in the current category table. */ | |
2eca16e6 | 91 | #define CATEGORY_SET(c) char_category_set (c) |
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92 | |
93 | /* Return the doc string of CATEGORY in category table TABLE. */ | |
94 | #define CATEGORY_DOCSTRING(table, category) \ | |
ea625b14 | 95 | XVECTOR (Fchar_table_extra_slot (table, make_number (0)))->contents[(category) - ' '] |
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96 | |
97 | /* Return the version number of category table TABLE. Not used for | |
98 | the moment. */ | |
99 | #define CATEGORY_TABLE_VERSION (table) \ | |
ea625b14 | 100 | Fchar_table_extra_slot (table, make_number (1)) |
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101 | |
102 | /* Return 1 if there is a word boundary between two word-constituent | |
103 | characters C1 and C2 if they appear in this order, else return 0. | |
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104 | There is no word boundary between two word-constituent ASCII and |
105 | Latin-1 characters. */ | |
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106 | #define WORD_BOUNDARY_P(c1, c2) \ |
107 | (!(SINGLE_BYTE_CHAR_P (c1) && SINGLE_BYTE_CHAR_P (c2)) \ | |
108 | && word_boundary_p (c1, c2)) | |
f78433b6 | 109 | |
383e0970 | 110 | extern int word_boundary_p (int, int); |