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428
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1 /* Copyright (c) 1994, 1995 Free Software Foundation.
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872
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2 Copyright (c) 1995, 1996, 2002 Ben Wing.
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428
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3
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4 This file is part of XEmacs.
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5
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6 XEmacs is free software; you can redistribute it and/or modify it
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7 under the terms of the GNU General Public License as published by the
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8 Free Software Foundation; either version 2, or (at your option) any
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9 later version.
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10
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11 XEmacs is distributed in the hope that it will be useful, but WITHOUT
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12 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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14 for more details.
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15
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16 You should have received a copy of the GNU General Public License
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17 along with XEmacs; see the file COPYING. If not, write to
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18 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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19 Boston, MA 02111-1307, USA. */
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20
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21 /* Synched up with: Not in FSF. */
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22
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440
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23 #ifndef INCLUDED_extents_h_
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24 #define INCLUDED_extents_h_
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428
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25
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26 DECLARE_LRECORD (extent, struct extent);
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27 #define XEXTENT(x) XRECORD (x, extent, struct extent)
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617
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28 #define wrap_extent(p) wrap_record (p, extent)
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29 #define EXTENTP(x) RECORDP (x, extent)
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30 #define CHECK_EXTENT(x) CHECK_RECORD (x, extent)
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31 #define CONCHECK_EXTENT(x) CONCHECK_RECORD (x, extent)
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32
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33 struct extent_auxiliary;
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34
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35 DECLARE_LRECORD (extent_auxiliary, struct extent_auxiliary);
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36 #define XEXTENT_AUXILIARY(x) \
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37 XRECORD (x, extent_auxiliary, struct extent_auxiliary)
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617
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38 #define wrap_extent_auxiliary(p) wrap_record (p, extent_auxiliary)
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39 #define EXTENT_AUXILIARYP(x) RECORDP (x, extent_auxiliary)
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40 #define CHECK_EXTENT_AUXILIARY(x) CHECK_RECORD (x, extent_auxiliary)
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41 #define CONCHECK_EXTENT_AUXILIARY(x) CONCHECK_RECORD (x, extent_auxiliary)
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42
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43 struct extent_info;
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44
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45 DECLARE_LRECORD (extent_info, struct extent_info);
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46 #define XEXTENT_INFO(x) XRECORD (x, extent_info, struct extent_info)
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617
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47 #define wrap_extent_info(p) wrap_record (p, extent_info)
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428
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48 #define EXTENT_INFOP(x) RECORDP (x, extent_info)
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49 #define CHECK_EXTENT_INFO(x) CHECK_RECORD (x, extent_info)
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50 #define CONCHECK_EXTENT_INFO(x) CONCHECK_RECORD (x, extent_info)
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51
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872
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52 /* the layouts for glyphs (extent->flags.glyph_layout). Must fit in 2 bits. */
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53 typedef enum glyph_layout
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826
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54 {
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872
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55 GL_TEXT,
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56 GL_OUTSIDE_MARGIN,
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57 GL_INSIDE_MARGIN,
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58 GL_WHITESPACE
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59 } glyph_layout;
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60
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61 struct extent;
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62
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63 void set_extent_endpoints (EXTENT extent, Bytexpos s, Bytexpos e,
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64 Lisp_Object object);
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428
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65
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66
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67 void flush_cached_extent_info (Lisp_Object extent_info);
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647
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68
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69 void set_extent_glyph (EXTENT extent, Lisp_Object glyph, int endp,
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70 glyph_layout layout);
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71
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428
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72
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73 /* flags for map_extents() and friends */
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74 #define ME_END_CLOSED (1 << 0)
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75 #define ME_START_OPEN (1 << 1)
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76 #define ME_ALL_EXTENTS_CLOSED (1 << 2)
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77 #define ME_ALL_EXTENTS_OPEN (2 << 2)
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78 #define ME_ALL_EXTENTS_CLOSED_OPEN (3 << 2)
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79 #define ME_ALL_EXTENTS_OPEN_CLOSED (4 << 2)
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80 #define ME_ALL_EXTENTS_MASK (7 << 2)
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81 #define ME_START_IN_REGION (1 << 5)
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82 #define ME_END_IN_REGION (2 << 5)
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83 #define ME_START_AND_END_IN_REGION (3 << 5)
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84 #define ME_START_OR_END_IN_REGION (4 << 5)
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85 #define ME_IN_REGION_MASK (7 << 5)
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86 #define ME_NEGATE_IN_REGION (1 << 8)
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87 /* the following flags are internal-only */
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88 #define ME_INCLUDE_INTERNAL (1 << 9)
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89 #define ME_MIGHT_THROW (1 << 10)
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90 #define ME_MIGHT_MODIFY_TEXT (1 << 11)
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91 #define ME_MIGHT_MODIFY_EXTENTS (1 << 12)
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92 #define ME_MIGHT_MOVE_SOE (1 << 13)
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93 #define ME_MIGHT_CALL_ELISP (ME_MIGHT_THROW | ME_MIGHT_MODIFY_TEXT | \
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94 ME_MIGHT_MODIFY_EXTENTS | ME_MIGHT_MOVE_SOE)
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95
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96
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97 extern int inside_undo;
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98 extern int in_modeline_generation;
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99
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100 EXFUN (Fextent_at, 5);
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101 EXFUN (Fextent_property, 3);
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102 EXFUN (Fput_text_property, 5);
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103
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104 EXFUN (Fdetach_extent, 1);
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105 EXFUN (Fextent_end_position, 1);
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106 EXFUN (Fextent_object, 1);
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107 EXFUN (Fextent_properties, 1);
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108 EXFUN (Fextent_start_position, 1);
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109 EXFUN (Fget_char_property, 4);
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110 EXFUN (Fmake_extent, 3);
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111 EXFUN (Fnext_extent_change, 2);
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112 EXFUN (Fprevious_extent_change, 2);
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113 EXFUN (Fprevious_single_char_property_change, 4);
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114 EXFUN (Fset_extent_endpoints, 4);
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115 EXFUN (Fset_extent_parent, 2);
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116 EXFUN (Fset_extent_property, 3);
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117
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118 enum extent_at_flag
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119 {
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120 EXTENT_AT_DEFAULT = 0,
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121 EXTENT_AT_AFTER = 0,
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122 EXTENT_AT_BEFORE,
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123 EXTENT_AT_AT
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124 };
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125
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126 Bytexpos extent_endpoint_byte (EXTENT extent, int endp);
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127 Charxpos extent_endpoint_char (EXTENT extent, int endp);
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128 Bytexpos next_previous_single_property_change (Bytexpos pos, Lisp_Object prop,
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129 Lisp_Object object,
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130 Bytexpos limit,
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131 Boolint next,
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132 Boolint text_props_only);
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133 Lisp_Object get_char_property (Bytexpos position, Lisp_Object prop,
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134 Lisp_Object object, enum extent_at_flag fl,
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135 int text_props_only);
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136 void adjust_extents (Lisp_Object object, Memxpos from,
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137 Memxpos to, int amount);
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138 void adjust_extents_for_deletion (Lisp_Object object, Bytexpos from,
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139 Bytexpos to, int gapsize,
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140 int numdel, int movegapsize);
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141 void verify_extent_modification (Lisp_Object object, Bytexpos from,
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142 Bytexpos to,
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143 Lisp_Object inhibit_read_only_value);
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144 void process_extents_for_insertion (Lisp_Object object,
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145 Bytexpos opoint, Bytecount length);
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146 void process_extents_for_deletion (Lisp_Object object, Bytexpos from,
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147 Bytexpos to, int destroy_them);
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148 /* Note the following function is in Charbpos's */
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149 void report_extent_modification (Lisp_Object buffer, Charbpos start,
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150 Charbpos end, int afterp);
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151 void add_string_extents (Lisp_Object string, struct buffer *buf,
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152 Bytexpos opoint, Bytecount length);
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153 void splice_in_string_extents (Lisp_Object string, struct buffer *buf,
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154 Bytexpos opoint, Bytecount length,
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155 Bytecount pos);
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156 void copy_string_extents (Lisp_Object new_string,
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157 Lisp_Object old_string,
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158 Bytecount new_pos, Bytecount old_pos,
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159 Bytecount length);
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160 void detach_all_extents (Lisp_Object object);
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161 Lisp_Object extent_at (Bytexpos position, Lisp_Object object,
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162 Lisp_Object property, EXTENT before,
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163 enum extent_at_flag at_flag, int all_extents);
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164
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165
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166 struct extent_fragment *extent_fragment_new (Lisp_Object buffer_or_string,
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167 struct frame *frm);
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168 face_index extent_fragment_update (struct window *w,
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169 struct extent_fragment *ef,
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170 Bytexpos pos, Lisp_Object last_glyph);
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428
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171 void extent_fragment_delete (struct extent_fragment *ef);
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172
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173 /* from alloc.c */
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174 struct extent *allocate_extent (void);
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175
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176 void allocate_extent_auxiliary (EXTENT ext);
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177 void init_buffer_extents (struct buffer *b);
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178 void uninit_buffer_extents (struct buffer *b);
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179
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180 #ifdef ERROR_CHECK_EXTENTS
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181 void sledgehammer_extent_check (Lisp_Object obj);
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182 #endif
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183
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184 #ifdef MEMORY_USAGE_STATS
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185 int compute_buffer_extent_usage (struct buffer *b,
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186 struct overhead_stats *ovstats);
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187 #endif
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188
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440
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189 #endif /* INCLUDED_extents_h_ */
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