annotate src/rangetab.c @ 4831:2e15c29cc2b3

fix bug in returning range table ends in unified range table code
author Ben Wing <ben@xemacs.org>
date Sun, 10 Jan 2010 00:49:14 -0600
parents 312503644bc3
children 6ef8256a020a 19a72041c5ed
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1 /* XEmacs routines to deal with range tables.
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2 Copyright (C) 1995 Sun Microsystems, Inc.
4831
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Ben Wing <ben@xemacs.org>
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3 Copyright (C) 1995, 2002, 2004, 2005, 2010 Ben Wing.
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4
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5 This file is part of XEmacs.
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6
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7 XEmacs is free software; you can redistribute it and/or modify it
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8 under the terms of the GNU General Public License as published by the
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9 Free Software Foundation; either version 2, or (at your option) any
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10 later version.
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11
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12 XEmacs is distributed in the hope that it will be useful, but WITHOUT
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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15 for more details.
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16
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17 You should have received a copy of the GNU General Public License
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18 along with XEmacs; see the file COPYING. If not, write to
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19 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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20 Boston, MA 02111-1307, USA. */
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21
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22 /* Synched up with: Not in FSF. */
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23
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24 /* Written by Ben Wing, August 1995. */
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25
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26 #include <config.h>
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27 #include "lisp.h"
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28 #include "rangetab.h"
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29
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30 Lisp_Object Qrange_tablep;
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31 Lisp_Object Qrange_table;
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32
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33 Lisp_Object Qstart_closed_end_open;
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34 Lisp_Object Qstart_open_end_open;
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35 Lisp_Object Qstart_closed_end_closed;
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36 Lisp_Object Qstart_open_end_closed;
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37
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38
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39 /************************************************************************/
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40 /* Range table object */
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41 /************************************************************************/
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42
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43 static enum range_table_type
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44 range_table_symbol_to_type (Lisp_Object symbol)
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45 {
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46 if (NILP (symbol))
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47 return RANGE_START_CLOSED_END_OPEN;
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48
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49 CHECK_SYMBOL (symbol);
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50 if (EQ (symbol, Qstart_closed_end_open))
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51 return RANGE_START_CLOSED_END_OPEN;
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52 if (EQ (symbol, Qstart_closed_end_closed))
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53 return RANGE_START_CLOSED_END_CLOSED;
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54 if (EQ (symbol, Qstart_open_end_open))
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55 return RANGE_START_OPEN_END_OPEN;
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56 if (EQ (symbol, Qstart_open_end_closed))
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57 return RANGE_START_OPEN_END_CLOSED;
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58
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59 invalid_constant ("Unknown range table type", symbol);
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60 RETURN_NOT_REACHED (RANGE_START_CLOSED_END_OPEN);
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61 }
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62
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63 static Lisp_Object
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64 range_table_type_to_symbol (enum range_table_type type)
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65 {
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66 switch (type)
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67 {
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68 case RANGE_START_CLOSED_END_OPEN:
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69 return Qstart_closed_end_open;
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70 case RANGE_START_CLOSED_END_CLOSED:
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71 return Qstart_closed_end_closed;
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72 case RANGE_START_OPEN_END_OPEN:
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73 return Qstart_open_end_open;
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74 case RANGE_START_OPEN_END_CLOSED:
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75 return Qstart_open_end_closed;
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76 }
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77
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78 ABORT ();
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79 return Qnil;
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80 }
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81
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82 /* We use a sorted array of ranges.
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83
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84 #### We should be using the gap array stuff from extents.c. This
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85 is not hard but just requires moving that stuff out of that file. */
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86
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87 static Lisp_Object
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88 mark_range_table (Lisp_Object obj)
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89 {
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90 Lisp_Range_Table *rt = XRANGE_TABLE (obj);
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91 int i;
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92
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93 for (i = 0; i < Dynarr_length (rt->entries); i++)
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94 mark_object (Dynarr_at (rt->entries, i).val);
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95
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96 return Qnil;
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97 }
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98
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99 static void
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100 print_range_table (Lisp_Object obj, Lisp_Object printcharfun,
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101 int UNUSED (escapeflag))
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102 {
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103 Lisp_Range_Table *rt = XRANGE_TABLE (obj);
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104 int i;
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105
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106 if (print_readably)
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107 write_fmt_string_lisp (printcharfun, "#s(range-table type %s data (",
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108 1, range_table_type_to_symbol (rt->type));
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109 else
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110 write_c_string (printcharfun, "#<range-table ");
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111 for (i = 0; i < Dynarr_length (rt->entries); i++)
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112 {
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113 struct range_table_entry *rte = Dynarr_atp (rt->entries, i);
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114 int so, ec;
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115 if (i > 0)
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116 write_c_string (printcharfun, " ");
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117 switch (rt->type)
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118 {
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119 case RANGE_START_CLOSED_END_OPEN: so = 0, ec = 0; break;
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120 case RANGE_START_CLOSED_END_CLOSED: so = 0, ec = 1; break;
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121 case RANGE_START_OPEN_END_OPEN: so = 1, ec = 0; break;
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122 case RANGE_START_OPEN_END_CLOSED: so = 1; ec = 1; break;
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123 default: ABORT (); so = 0, ec = 0; break;
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124 }
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125 write_fmt_string (printcharfun, "%c%ld %ld%c ",
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126 print_readably ? '(' : so ? '(' : '[',
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127 (long) (rte->first - so),
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128 (long) (rte->last - ec),
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129 print_readably ? ')' : ec ? ']' : ')'
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130 );
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131 print_internal (rte->val, printcharfun, 1);
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132 }
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133 if (print_readably)
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134 write_c_string (printcharfun, "))");
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135 else
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136 write_fmt_string (printcharfun, " 0x%x>", rt->header.uid);
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137 }
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138
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139 static int
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140 range_table_equal (Lisp_Object obj1, Lisp_Object obj2, int depth)
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141 {
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142 Lisp_Range_Table *rt1 = XRANGE_TABLE (obj1);
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143 Lisp_Range_Table *rt2 = XRANGE_TABLE (obj2);
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144 int i;
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145
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146 if (Dynarr_length (rt1->entries) != Dynarr_length (rt2->entries))
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147 return 0;
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148
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149 for (i = 0; i < Dynarr_length (rt1->entries); i++)
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150 {
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151 struct range_table_entry *rte1 = Dynarr_atp (rt1->entries, i);
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152 struct range_table_entry *rte2 = Dynarr_atp (rt2->entries, i);
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153
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154 if (rte1->first != rte2->first
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155 || rte1->last != rte2->last
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156 || !internal_equal (rte1->val, rte2->val, depth + 1))
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157 return 0;
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158 }
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159
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160 return 1;
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161 }
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162
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163 static Hashcode
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164 range_table_entry_hash (struct range_table_entry *rte, int depth)
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165 {
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166 return HASH3 (rte->first, rte->last, internal_hash (rte->val, depth + 1));
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167 }
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168
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169 static Hashcode
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170 range_table_hash (Lisp_Object obj, int depth)
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171 {
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172 Lisp_Range_Table *rt = XRANGE_TABLE (obj);
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173 int i;
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174 int size = Dynarr_length (rt->entries);
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175 Hashcode hash = size;
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176
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177 /* approach based on internal_array_hash(). */
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178 if (size <= 5)
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179 {
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180 for (i = 0; i < size; i++)
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181 hash = HASH2 (hash,
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182 range_table_entry_hash (Dynarr_atp (rt->entries, i),
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183 depth));
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184 return hash;
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185 }
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186
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187 /* just pick five elements scattered throughout the array.
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188 A slightly better approach would be to offset by some
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189 noise factor from the points chosen below. */
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190 for (i = 0; i < 5; i++)
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191 hash = HASH2 (hash, range_table_entry_hash (Dynarr_atp (rt->entries,
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192 i*size/5),
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193 depth));
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194 return hash;
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195 }
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196
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197 static const struct memory_description rte_description_1[] = {
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198 { XD_LISP_OBJECT, offsetof (range_table_entry, val) },
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199 { XD_END }
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200 };
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201
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202 static const struct sized_memory_description rte_description = {
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203 sizeof (range_table_entry),
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204 rte_description_1
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205 };
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206
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207 static const struct memory_description rted_description_1[] = {
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208 XD_DYNARR_DESC (range_table_entry_dynarr, &rte_description),
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209 { XD_END }
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210 };
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211
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212 static const struct sized_memory_description rted_description = {
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213 sizeof (range_table_entry_dynarr),
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214 rted_description_1
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215 };
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216
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217 static const struct memory_description range_table_description[] = {
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218 { XD_BLOCK_PTR, offsetof (Lisp_Range_Table, entries), 1,
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219 { &rted_description } },
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220 { XD_END }
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221 };
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222
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223 DEFINE_LRECORD_IMPLEMENTATION ("range-table", range_table,
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224 1, /*dumpable-flag*/
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225 mark_range_table, print_range_table, 0,
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226 range_table_equal, range_table_hash,
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227 range_table_description,
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228 Lisp_Range_Table);
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229
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230 /************************************************************************/
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231 /* Range table operations */
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232 /************************************************************************/
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233
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234 #ifdef ERROR_CHECK_STRUCTURES
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235
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236 static void
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237 verify_range_table (Lisp_Range_Table *rt)
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238 {
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239 int i;
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240
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241 for (i = 0; i < Dynarr_length (rt->entries); i++)
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242 {
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243 struct range_table_entry *rte = Dynarr_atp (rt->entries, i);
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244 assert (rte->last >= rte->first);
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245 if (i > 0)
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246 assert (Dynarr_at (rt->entries, i - 1).last <= rte->first);
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247 }
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248 }
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249
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250 #else
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251
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252 #define verify_range_table(rt)
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253
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254 #endif
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255
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256 /* Look up in a range table without the Dynarr wrapper.
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257 Used also by the unified range table format. */
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258
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259 static Lisp_Object
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260 get_range_table (EMACS_INT pos, int nentries, struct range_table_entry *tab,
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261 Lisp_Object default_)
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262 {
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263 int left = 0, right = nentries;
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264
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265 /* binary search for the entry. Based on similar code in
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266 extent_list_locate(). */
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267 while (left != right)
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268 {
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269 /* RIGHT might not point to a valid entry (i.e. it's at the end
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270 of the list), so NEWPOS must round down. */
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271 int newpos = (left + right) >> 1;
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272 struct range_table_entry *entry = tab + newpos;
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273 if (pos >= entry->last)
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274 left = newpos + 1;
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275 else if (pos < entry->first)
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276 right = newpos;
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277 else
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278 return entry->val;
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279 }
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280
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281 return default_;
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282 }
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283
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284 DEFUN ("range-table-p", Frange_table_p, 1, 1, 0, /*
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285 Return non-nil if OBJECT is a range table.
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286 */
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287 (object))
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288 {
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289 return RANGE_TABLEP (object) ? Qt : Qnil;
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290 }
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291
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292 DEFUN ("range-table-type", Frange_table_type, 1, 1, 0, /*
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293 Return the type of RANGE-TABLE.
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294
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295 This will be a symbol describing how ranges in RANGE-TABLE function at their
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296 ends; see `make-range-table'.
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297 */
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298 (range_table))
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299 {
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300 CHECK_RANGE_TABLE (range_table);
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301 return range_table_type_to_symbol (XRANGE_TABLE (range_table)->type);
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302 }
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303
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304 DEFUN ("make-range-table", Fmake_range_table, 0, 1, 0, /*
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305 Return a new, empty range table.
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306 You can manipulate it using `put-range-table', `get-range-table',
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307 `remove-range-table', and `clear-range-table'.
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308 Range tables allow you to efficiently set values for ranges of integers.
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309
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310 TYPE is a symbol indicating how ranges are assumed to function at their
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311 ends. It can be one of
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312
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313 SYMBOL RANGE-START RANGE-END
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314 ------ ----------- ---------
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315 `start-closed-end-open' (the default) closed open
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316 `start-closed-end-closed' closed closed
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317 `start-open-end-open' open open
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318 `start-open-end-closed' open closed
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319
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320 A `closed' endpoint of a range means that the number at that end is included
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321 in the range. For an `open' endpoint, the number would not be included.
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322
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323 For example, a closed-open range from 5 to 20 would be indicated as [5,
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324 20) where a bracket indicates a closed end and a parenthesis an open end,
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325 and would mean `all the numbers between 5 and 20', including 5 but not 20.
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diff changeset
326 This seems a little strange at first but is in fact extremely common in
ab71ad6ff3dd [xemacs-hg @ 2004-12-06 03:50:53 by ben]
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diff changeset
327 the outside world as well as in computers and makes things work sensibly.
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diff changeset
328 For example, if I say "there are seven days between today and next week
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diff changeset
329 today", I'm including today but not next week today; if I included both,
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diff changeset
330 there would be eight days. Similarly, there are 15 (= 20 - 5) elements in
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diff changeset
331 the range [5, 20), but 16 in the range [5, 20].
428
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332 */
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diff changeset
333 (type))
428
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334 {
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diff changeset
335 Lisp_Range_Table *rt = ALLOC_LCRECORD_TYPE (Lisp_Range_Table,
440
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diff changeset
336 &lrecord_range_table);
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337 rt->entries = Dynarr_new (range_table_entry);
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338 rt->type = range_table_symbol_to_type (type);
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diff changeset
339 return wrap_range_table (rt);
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340 }
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341
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342 DEFUN ("copy-range-table", Fcopy_range_table, 1, 1, 0, /*
444
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diff changeset
343 Return a new range table which is a copy of RANGE-TABLE.
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diff changeset
344 It will contain the same values for the same ranges as RANGE-TABLE.
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345 The values will not themselves be copied.
428
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346 */
444
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347 (range_table))
428
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348 {
440
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349 Lisp_Range_Table *rt, *rtnew;
428
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350
444
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351 CHECK_RANGE_TABLE (range_table);
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352 rt = XRANGE_TABLE (range_table);
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353
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354 rtnew = ALLOC_LCRECORD_TYPE (Lisp_Range_Table, &lrecord_range_table);
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355 rtnew->entries = Dynarr_new (range_table_entry);
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356 rtnew->type = rt->type;
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357
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358 Dynarr_add_many (rtnew->entries, Dynarr_atp (rt->entries, 0),
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359 Dynarr_length (rt->entries));
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360 return wrap_range_table (rtnew);
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361 }
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362
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363 DEFUN ("get-range-table", Fget_range_table, 2, 3, 0, /*
444
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diff changeset
364 Find value for position POS in RANGE-TABLE.
428
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365 If there is no corresponding value, return DEFAULT (defaults to nil).
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366 */
444
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diff changeset
367 (pos, range_table, default_))
428
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368 {
440
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369 Lisp_Range_Table *rt;
428
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370
444
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371 CHECK_RANGE_TABLE (range_table);
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372 rt = XRANGE_TABLE (range_table);
428
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373
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374 CHECK_INT_COERCE_CHAR (pos);
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375
3ecd8885ac67 Import from CVS: tag r21-2-22
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376 return get_range_table (XINT (pos), Dynarr_length (rt->entries),
3ecd8885ac67 Import from CVS: tag r21-2-22
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377 Dynarr_atp (rt->entries, 0), default_);
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378 }
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379
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380 static void
2e15c29cc2b3 fix bug in returning range table ends in unified range table code
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381 external_to_internal_adjust_ends (enum range_table_type type,
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382 EMACS_INT *first, EMACS_INT *last)
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383 {
2e15c29cc2b3 fix bug in returning range table ends in unified range table code
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384 /* Fix up the numbers in accordance with the open/closedness to make
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385 them behave like default open/closed. */
2e15c29cc2b3 fix bug in returning range table ends in unified range table code
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386 switch (type)
2e15c29cc2b3 fix bug in returning range table ends in unified range table code
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387 {
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388 case RANGE_START_CLOSED_END_OPEN: break;
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diff changeset
389 case RANGE_START_CLOSED_END_CLOSED: (*last)++; break;
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390 case RANGE_START_OPEN_END_OPEN: (*first)++; break;
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391 case RANGE_START_OPEN_END_CLOSED: (*first)++, (*last)++; break;
2e15c29cc2b3 fix bug in returning range table ends in unified range table code
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392 }
2e15c29cc2b3 fix bug in returning range table ends in unified range table code
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diff changeset
393 }
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394
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diff changeset
395 static void
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396 internal_to_external_adjust_ends (enum range_table_type type,
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397 EMACS_INT *first, EMACS_INT *last)
2e15c29cc2b3 fix bug in returning range table ends in unified range table code
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398 {
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diff changeset
399 /* Reverse the changes made in external_to_internal_adjust_ends().
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400 */
2e15c29cc2b3 fix bug in returning range table ends in unified range table code
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diff changeset
401 switch (type)
2e15c29cc2b3 fix bug in returning range table ends in unified range table code
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402 {
2e15c29cc2b3 fix bug in returning range table ends in unified range table code
Ben Wing <ben@xemacs.org>
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diff changeset
403 case RANGE_START_CLOSED_END_OPEN: break;
2e15c29cc2b3 fix bug in returning range table ends in unified range table code
Ben Wing <ben@xemacs.org>
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diff changeset
404 case RANGE_START_CLOSED_END_CLOSED: (*last)--; break;
2e15c29cc2b3 fix bug in returning range table ends in unified range table code
Ben Wing <ben@xemacs.org>
parents: 4713
diff changeset
405 case RANGE_START_OPEN_END_OPEN: (*first)--; break;
2e15c29cc2b3 fix bug in returning range table ends in unified range table code
Ben Wing <ben@xemacs.org>
parents: 4713
diff changeset
406 case RANGE_START_OPEN_END_CLOSED: (*first)--, (*last)--; break;
2e15c29cc2b3 fix bug in returning range table ends in unified range table code
Ben Wing <ben@xemacs.org>
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diff changeset
407 }
2e15c29cc2b3 fix bug in returning range table ends in unified range table code
Ben Wing <ben@xemacs.org>
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diff changeset
408 }
2e15c29cc2b3 fix bug in returning range table ends in unified range table code
Ben Wing <ben@xemacs.org>
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diff changeset
409
428
3ecd8885ac67 Import from CVS: tag r21-2-22
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410 void
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diff changeset
411 put_range_table (Lisp_Object table, EMACS_INT first,
3ecd8885ac67 Import from CVS: tag r21-2-22
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412 EMACS_INT last, Lisp_Object val)
3ecd8885ac67 Import from CVS: tag r21-2-22
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parents:
diff changeset
413 {
3ecd8885ac67 Import from CVS: tag r21-2-22
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parents:
diff changeset
414 int i;
3ecd8885ac67 Import from CVS: tag r21-2-22
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diff changeset
415 int insert_me_here = -1;
440
8de8e3f6228a Import from CVS: tag r21-2-28
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diff changeset
416 Lisp_Range_Table *rt = XRANGE_TABLE (table);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
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diff changeset
417
4831
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diff changeset
418 external_to_internal_adjust_ends (rt->type, &first, &last);
2421
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parents: 2367
diff changeset
419 if (first == last)
ab71ad6ff3dd [xemacs-hg @ 2004-12-06 03:50:53 by ben]
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diff changeset
420 return;
ab71ad6ff3dd [xemacs-hg @ 2004-12-06 03:50:53 by ben]
ben
parents: 2367
diff changeset
421 if (first > last)
ab71ad6ff3dd [xemacs-hg @ 2004-12-06 03:50:53 by ben]
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parents: 2367
diff changeset
422 /* This will happen if originally first == last and both ends are
ab71ad6ff3dd [xemacs-hg @ 2004-12-06 03:50:53 by ben]
ben
parents: 2367
diff changeset
423 open. #### Should we signal an error? */
ab71ad6ff3dd [xemacs-hg @ 2004-12-06 03:50:53 by ben]
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parents: 2367
diff changeset
424 return;
ab71ad6ff3dd [xemacs-hg @ 2004-12-06 03:50:53 by ben]
ben
parents: 2367
diff changeset
425
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
426 /* Now insert in the proper place. This gets tricky because
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
427 we may be overlapping one or more existing ranges and need
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
428 to fix them up. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
429
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
430 /* First delete all sections of any existing ranges that overlap
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
431 the new range. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
432 for (i = 0; i < Dynarr_length (rt->entries); i++)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
433 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
434 struct range_table_entry *entry = Dynarr_atp (rt->entries, i);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
435 /* We insert before the first range that begins at or after the
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
436 new range. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
437 if (entry->first >= first && insert_me_here < 0)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
438 insert_me_here = i;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
439 if (entry->last < first)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
440 /* completely before the new range. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
441 continue;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
442 if (entry->first > last)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
443 /* completely after the new range. No more possibilities of
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
444 finding overlapping ranges. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
445 break;
2421
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ben
parents: 2367
diff changeset
446 /* At this point the existing ENTRY overlaps or touches the new one. */
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
447 if (entry->first < first && entry->last <= last)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
448 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
449 /* looks like:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
450
2421
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ben
parents: 2367
diff changeset
451 [ NEW )
ab71ad6ff3dd [xemacs-hg @ 2004-12-06 03:50:53 by ben]
ben
parents: 2367
diff changeset
452 [ EXISTING )
ab71ad6ff3dd [xemacs-hg @ 2004-12-06 03:50:53 by ben]
ben
parents: 2367
diff changeset
453
ab71ad6ff3dd [xemacs-hg @ 2004-12-06 03:50:53 by ben]
ben
parents: 2367
diff changeset
454 or
ab71ad6ff3dd [xemacs-hg @ 2004-12-06 03:50:53 by ben]
ben
parents: 2367
diff changeset
455
ab71ad6ff3dd [xemacs-hg @ 2004-12-06 03:50:53 by ben]
ben
parents: 2367
diff changeset
456 [ NEW )
ab71ad6ff3dd [xemacs-hg @ 2004-12-06 03:50:53 by ben]
ben
parents: 2367
diff changeset
457 [ EXISTING )
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
458
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
459 */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
460 /* truncate the end off of it. */
2421
ab71ad6ff3dd [xemacs-hg @ 2004-12-06 03:50:53 by ben]
ben
parents: 2367
diff changeset
461 entry->last = first;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
462 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
463 else if (entry->first < first && entry->last > last)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
464 /* looks like:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
465
2421
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diff changeset
466 [ NEW )
ab71ad6ff3dd [xemacs-hg @ 2004-12-06 03:50:53 by ben]
ben
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diff changeset
467 [ EXISTING )
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
468
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
469 */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
470 /* need to split this one in two. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
471 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
472 struct range_table_entry insert_me_too;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
473
2421
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parents: 2367
diff changeset
474 insert_me_too.first = last;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
475 insert_me_too.last = entry->last;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
476 insert_me_too.val = entry->val;
2421
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ben
parents: 2367
diff changeset
477 entry->last = first;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
478 Dynarr_insert_many (rt->entries, &insert_me_too, 1, i + 1);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
479 }
2421
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parents: 2367
diff changeset
480 else if (entry->last >= last)
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
481 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
482 /* looks like:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
483
2421
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parents: 2367
diff changeset
484 [ NEW )
ab71ad6ff3dd [xemacs-hg @ 2004-12-06 03:50:53 by ben]
ben
parents: 2367
diff changeset
485 [ EXISTING )
ab71ad6ff3dd [xemacs-hg @ 2004-12-06 03:50:53 by ben]
ben
parents: 2367
diff changeset
486
ab71ad6ff3dd [xemacs-hg @ 2004-12-06 03:50:53 by ben]
ben
parents: 2367
diff changeset
487 or
ab71ad6ff3dd [xemacs-hg @ 2004-12-06 03:50:53 by ben]
ben
parents: 2367
diff changeset
488
ab71ad6ff3dd [xemacs-hg @ 2004-12-06 03:50:53 by ben]
ben
parents: 2367
diff changeset
489 [ NEW )
ab71ad6ff3dd [xemacs-hg @ 2004-12-06 03:50:53 by ben]
ben
parents: 2367
diff changeset
490 [ EXISTING )
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
491
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
492 */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
493 /* truncate the start off of it. */
2421
ab71ad6ff3dd [xemacs-hg @ 2004-12-06 03:50:53 by ben]
ben
parents: 2367
diff changeset
494 entry->first = last;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
495 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
496 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
497 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
498 /* existing is entirely within new. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
499 Dynarr_delete_many (rt->entries, i, 1);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
500 i--; /* back up since everything shifted one to the left. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
501 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
502 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
503
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
504 /* Someone asked us to delete the range, not insert it. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
505 if (UNBOUNDP (val))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
506 return;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
507
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
508 /* Now insert the new entry, maybe at the end. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
509
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
510 if (insert_me_here < 0)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
511 insert_me_here = i;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
512
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
513 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
514 struct range_table_entry insert_me;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
515
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
516 insert_me.first = first;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
517 insert_me.last = last;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
518 insert_me.val = val;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
519
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
520 Dynarr_insert_many (rt->entries, &insert_me, 1, insert_me_here);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
521 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
522
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
523 /* Now see if we can combine this entry with adjacent ones just
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
524 before or after. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
525
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
526 if (insert_me_here > 0)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
527 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
528 struct range_table_entry *entry = Dynarr_atp (rt->entries,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
529 insert_me_here - 1);
2421
ab71ad6ff3dd [xemacs-hg @ 2004-12-06 03:50:53 by ben]
ben
parents: 2367
diff changeset
530 if (EQ (val, entry->val) && entry->last == first)
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
531 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
532 entry->last = last;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
533 Dynarr_delete_many (rt->entries, insert_me_here, 1);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
534 insert_me_here--;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
535 /* We have morphed into a larger range. Update our records
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
536 in case we also combine with the one after. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
537 first = entry->first;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
538 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
539 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
540
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
541 if (insert_me_here < Dynarr_length (rt->entries) - 1)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
542 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
543 struct range_table_entry *entry = Dynarr_atp (rt->entries,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
544 insert_me_here + 1);
2421
ab71ad6ff3dd [xemacs-hg @ 2004-12-06 03:50:53 by ben]
ben
parents: 2367
diff changeset
545 if (EQ (val, entry->val) && entry->first == last)
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
546 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
547 entry->first = first;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
548 Dynarr_delete_many (rt->entries, insert_me_here, 1);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
549 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
550 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
551 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
552
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
553 DEFUN ("put-range-table", Fput_range_table, 4, 4, 0, /*
2421
ab71ad6ff3dd [xemacs-hg @ 2004-12-06 03:50:53 by ben]
ben
parents: 2367
diff changeset
554 Set the value for range START .. END to be VALUE in RANGE-TABLE.
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
555 */
444
576fb035e263 Import from CVS: tag r21-2-37
cvs
parents: 442
diff changeset
556 (start, end, value, range_table))
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
557 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
558 EMACS_INT first, last;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
559
444
576fb035e263 Import from CVS: tag r21-2-37
cvs
parents: 442
diff changeset
560 CHECK_RANGE_TABLE (range_table);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
561 CHECK_INT_COERCE_CHAR (start);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
562 first = XINT (start);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
563 CHECK_INT_COERCE_CHAR (end);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
564 last = XINT (end);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
565 if (first > last)
563
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 444
diff changeset
566 invalid_argument_2 ("start must be <= end", start, end);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
567
444
576fb035e263 Import from CVS: tag r21-2-37
cvs
parents: 442
diff changeset
568 put_range_table (range_table, first, last, value);
576fb035e263 Import from CVS: tag r21-2-37
cvs
parents: 442
diff changeset
569 verify_range_table (XRANGE_TABLE (range_table));
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
570 return Qnil;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
571 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
572
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
573 DEFUN ("remove-range-table", Fremove_range_table, 3, 3, 0, /*
2421
ab71ad6ff3dd [xemacs-hg @ 2004-12-06 03:50:53 by ben]
ben
parents: 2367
diff changeset
574 Remove the value for range START .. END in RANGE-TABLE.
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
575 */
444
576fb035e263 Import from CVS: tag r21-2-37
cvs
parents: 442
diff changeset
576 (start, end, range_table))
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
577 {
444
576fb035e263 Import from CVS: tag r21-2-37
cvs
parents: 442
diff changeset
578 return Fput_range_table (start, end, Qunbound, range_table);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
579 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
580
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
581 DEFUN ("clear-range-table", Fclear_range_table, 1, 1, 0, /*
444
576fb035e263 Import from CVS: tag r21-2-37
cvs
parents: 442
diff changeset
582 Flush RANGE-TABLE.
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
583 */
444
576fb035e263 Import from CVS: tag r21-2-37
cvs
parents: 442
diff changeset
584 (range_table))
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
585 {
444
576fb035e263 Import from CVS: tag r21-2-37
cvs
parents: 442
diff changeset
586 CHECK_RANGE_TABLE (range_table);
576fb035e263 Import from CVS: tag r21-2-37
cvs
parents: 442
diff changeset
587 Dynarr_reset (XRANGE_TABLE (range_table)->entries);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
588 return Qnil;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
589 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
590
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
591 DEFUN ("map-range-table", Fmap_range_table, 2, 2, 0, /*
444
576fb035e263 Import from CVS: tag r21-2-37
cvs
parents: 442
diff changeset
592 Map FUNCTION over entries in RANGE-TABLE, calling it with three args,
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
593 the beginning and end of the range and the corresponding value.
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
594
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
595 Results are guaranteed to be correct (i.e. each entry processed
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
596 exactly once) if FUNCTION modifies or deletes the current entry
444
576fb035e263 Import from CVS: tag r21-2-37
cvs
parents: 442
diff changeset
597 \(i.e. passes the current range to `put-range-table' or
4391
cbf129b005df Clarify #'map-range-table docstring.
Aidan Kehoe <kehoea@parhasard.net>
parents: 3017
diff changeset
598 `remove-range-table'). If FUNCTION modifies or deletes any other entry,
cbf129b005df Clarify #'map-range-table docstring.
Aidan Kehoe <kehoea@parhasard.net>
parents: 3017
diff changeset
599 this guarantee doesn't hold.
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
600 */
444
576fb035e263 Import from CVS: tag r21-2-37
cvs
parents: 442
diff changeset
601 (function, range_table))
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
602 {
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
603 Lisp_Range_Table *rt;
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
604 int i;
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
605
444
576fb035e263 Import from CVS: tag r21-2-37
cvs
parents: 442
diff changeset
606 CHECK_RANGE_TABLE (range_table);
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
607 CHECK_FUNCTION (function);
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
608
444
576fb035e263 Import from CVS: tag r21-2-37
cvs
parents: 442
diff changeset
609 rt = XRANGE_TABLE (range_table);
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
610
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
611 /* Do not "optimize" by pulling out the length computation below!
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
612 FUNCTION may have changed the table. */
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
613 for (i = 0; i < Dynarr_length (rt->entries); i++)
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
614 {
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
615 struct range_table_entry *entry = Dynarr_atp (rt->entries, i);
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
616 EMACS_INT first, last;
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
617 Lisp_Object args[4];
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
618 int oldlen;
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
619
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
620 again:
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
621 first = entry->first;
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
622 last = entry->last;
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
623 oldlen = Dynarr_length (rt->entries);
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
624 args[0] = function;
2952
861a7995b9fe [xemacs-hg @ 2005-09-26 08:29:27 by ben]
ben
parents: 2720
diff changeset
625 /* Fix up the numbers in accordance with the open/closedness of the
861a7995b9fe [xemacs-hg @ 2005-09-26 08:29:27 by ben]
ben
parents: 2720
diff changeset
626 table. */
861a7995b9fe [xemacs-hg @ 2005-09-26 08:29:27 by ben]
ben
parents: 2720
diff changeset
627 {
861a7995b9fe [xemacs-hg @ 2005-09-26 08:29:27 by ben]
ben
parents: 2720
diff changeset
628 EMACS_INT premier = first, dernier = last;
4831
2e15c29cc2b3 fix bug in returning range table ends in unified range table code
Ben Wing <ben@xemacs.org>
parents: 4713
diff changeset
629 internal_to_external_adjust_ends (rt->type, &premier, &dernier);
2952
861a7995b9fe [xemacs-hg @ 2005-09-26 08:29:27 by ben]
ben
parents: 2720
diff changeset
630 args[1] = make_int (premier);
861a7995b9fe [xemacs-hg @ 2005-09-26 08:29:27 by ben]
ben
parents: 2720
diff changeset
631 args[2] = make_int (dernier);
861a7995b9fe [xemacs-hg @ 2005-09-26 08:29:27 by ben]
ben
parents: 2720
diff changeset
632 }
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
633 args[3] = entry->val;
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
634 Ffuncall (countof (args), args);
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
635 /* Has FUNCTION removed the entry? */
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
636 if (oldlen > Dynarr_length (rt->entries)
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
637 && i < Dynarr_length (rt->entries)
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
638 && (first != entry->first || last != entry->last))
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
639 goto again;
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
640 }
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
641
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
642 return Qnil;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
643 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
644
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
645
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
646 /************************************************************************/
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
647 /* Range table read syntax */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
648 /************************************************************************/
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
649
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
650 static int
2421
ab71ad6ff3dd [xemacs-hg @ 2004-12-06 03:50:53 by ben]
ben
parents: 2367
diff changeset
651 rangetab_type_validate (Lisp_Object UNUSED (keyword), Lisp_Object value,
ab71ad6ff3dd [xemacs-hg @ 2004-12-06 03:50:53 by ben]
ben
parents: 2367
diff changeset
652 Error_Behavior UNUSED (errb))
ab71ad6ff3dd [xemacs-hg @ 2004-12-06 03:50:53 by ben]
ben
parents: 2367
diff changeset
653 {
ab71ad6ff3dd [xemacs-hg @ 2004-12-06 03:50:53 by ben]
ben
parents: 2367
diff changeset
654 /* #### should deal with ERRB */
ab71ad6ff3dd [xemacs-hg @ 2004-12-06 03:50:53 by ben]
ben
parents: 2367
diff changeset
655 range_table_symbol_to_type (value);
ab71ad6ff3dd [xemacs-hg @ 2004-12-06 03:50:53 by ben]
ben
parents: 2367
diff changeset
656 return 1;
ab71ad6ff3dd [xemacs-hg @ 2004-12-06 03:50:53 by ben]
ben
parents: 2367
diff changeset
657 }
ab71ad6ff3dd [xemacs-hg @ 2004-12-06 03:50:53 by ben]
ben
parents: 2367
diff changeset
658
ab71ad6ff3dd [xemacs-hg @ 2004-12-06 03:50:53 by ben]
ben
parents: 2367
diff changeset
659 static int
2286
04bc9d2f42c7 [xemacs-hg @ 2004-09-20 19:18:55 by james]
james
parents: 1204
diff changeset
660 rangetab_data_validate (Lisp_Object UNUSED (keyword), Lisp_Object value,
04bc9d2f42c7 [xemacs-hg @ 2004-09-20 19:18:55 by james]
james
parents: 1204
diff changeset
661 Error_Behavior UNUSED (errb))
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
662 {
2367
ecf1ebac70d8 [xemacs-hg @ 2004-11-04 23:05:23 by ben]
ben
parents: 2286
diff changeset
663 /* #### should deal with ERRB */
ecf1ebac70d8 [xemacs-hg @ 2004-11-04 23:05:23 by ben]
ben
parents: 2286
diff changeset
664 EXTERNAL_PROPERTY_LIST_LOOP_3 (range, data, value)
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
665 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
666 if (!INTP (range) && !CHARP (range)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
667 && !(CONSP (range) && CONSP (XCDR (range))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
668 && NILP (XCDR (XCDR (range)))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
669 && (INTP (XCAR (range)) || CHARP (XCAR (range)))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
670 && (INTP (XCAR (XCDR (range))) || CHARP (XCAR (XCDR (range))))))
563
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 444
diff changeset
671 sferror ("Invalid range format", range);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
672 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
673
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
674 return 1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
675 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
676
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
677 static Lisp_Object
2421
ab71ad6ff3dd [xemacs-hg @ 2004-12-06 03:50:53 by ben]
ben
parents: 2367
diff changeset
678 rangetab_instantiate (Lisp_Object plist)
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
679 {
2425
b3315b0c8558 [xemacs-hg @ 2004-12-06 23:27:15 by ben]
ben
parents: 2421
diff changeset
680 Lisp_Object data = Qnil, type = Qnil, rangetab;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
681
2421
ab71ad6ff3dd [xemacs-hg @ 2004-12-06 03:50:53 by ben]
ben
parents: 2367
diff changeset
682 PROPERTY_LIST_LOOP_3 (key, value, plist)
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
683 {
2421
ab71ad6ff3dd [xemacs-hg @ 2004-12-06 03:50:53 by ben]
ben
parents: 2367
diff changeset
684 if (EQ (key, Qtype)) type = value;
ab71ad6ff3dd [xemacs-hg @ 2004-12-06 03:50:53 by ben]
ben
parents: 2367
diff changeset
685 else if (EQ (key, Qdata)) data = value;
ab71ad6ff3dd [xemacs-hg @ 2004-12-06 03:50:53 by ben]
ben
parents: 2367
diff changeset
686 else
2500
3d8143fc88e1 [xemacs-hg @ 2005-01-24 23:33:30 by ben]
ben
parents: 2425
diff changeset
687 ABORT ();
2421
ab71ad6ff3dd [xemacs-hg @ 2004-12-06 03:50:53 by ben]
ben
parents: 2367
diff changeset
688 }
ab71ad6ff3dd [xemacs-hg @ 2004-12-06 03:50:53 by ben]
ben
parents: 2367
diff changeset
689
2425
b3315b0c8558 [xemacs-hg @ 2004-12-06 23:27:15 by ben]
ben
parents: 2421
diff changeset
690 rangetab = Fmake_range_table (type);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
691
2421
ab71ad6ff3dd [xemacs-hg @ 2004-12-06 03:50:53 by ben]
ben
parents: 2367
diff changeset
692 {
ab71ad6ff3dd [xemacs-hg @ 2004-12-06 03:50:53 by ben]
ben
parents: 2367
diff changeset
693 PROPERTY_LIST_LOOP_3 (range, val, data)
ab71ad6ff3dd [xemacs-hg @ 2004-12-06 03:50:53 by ben]
ben
parents: 2367
diff changeset
694 {
ab71ad6ff3dd [xemacs-hg @ 2004-12-06 03:50:53 by ben]
ben
parents: 2367
diff changeset
695 if (CONSP (range))
ab71ad6ff3dd [xemacs-hg @ 2004-12-06 03:50:53 by ben]
ben
parents: 2367
diff changeset
696 Fput_range_table (Fcar (range), Fcar (Fcdr (range)), val,
ab71ad6ff3dd [xemacs-hg @ 2004-12-06 03:50:53 by ben]
ben
parents: 2367
diff changeset
697 rangetab);
ab71ad6ff3dd [xemacs-hg @ 2004-12-06 03:50:53 by ben]
ben
parents: 2367
diff changeset
698 else
ab71ad6ff3dd [xemacs-hg @ 2004-12-06 03:50:53 by ben]
ben
parents: 2367
diff changeset
699 Fput_range_table (range, range, val, rangetab);
ab71ad6ff3dd [xemacs-hg @ 2004-12-06 03:50:53 by ben]
ben
parents: 2367
diff changeset
700 }
ab71ad6ff3dd [xemacs-hg @ 2004-12-06 03:50:53 by ben]
ben
parents: 2367
diff changeset
701 }
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
702
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
703 return rangetab;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
704 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
705
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
706
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
707 /************************************************************************/
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
708 /* Unified range tables */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
709 /************************************************************************/
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
710
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
711 /* A "unified range table" is a format for storing range tables
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
712 as contiguous blocks of memory. This is used by the regexp
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
713 code, which needs to use range tables to properly handle []
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
714 constructs in the presence of extended characters but wants to
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
715 store an entire compiled pattern as a contiguous block of memory.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
716
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
717 Unified range tables are designed so that they can be placed
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
718 at an arbitrary (possibly mis-aligned) place in memory.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
719 (Dealing with alignment is a pain in the ass.)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
720
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
721 WARNING: No provisions for garbage collection are currently made.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
722 This means that there must not be any Lisp objects in a unified
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
723 range table that need to be marked for garbage collection.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
724 Good candidates for objects that can go into a range table are
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
725
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
726 -- numbers and characters (do not need to be marked)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
727 -- nil, t (marked elsewhere)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
728 -- charsets and coding systems (automatically marked because
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
729 they are in a marked list,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
730 and can't be removed)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
731
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
732 Good but slightly less so:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
733
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
734 -- symbols (could be uninterned, but that is not likely)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
735
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
736 Somewhat less good:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
737
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
738 -- buffers, frames, devices (could get deleted)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
739
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
740
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
741 It is expected that you work with range tables in the normal
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
742 format and then convert to unified format when you are done
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
743 making modifications. As such, no functions are provided
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
744 for modifying a unified range table. The only operations
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
745 you can do to unified range tables are
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
746
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
747 -- look up a value
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
748 -- retrieve all the ranges in an iterative fashion
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
749
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
750 */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
751
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
752 /* The format of a unified range table is as follows:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
753
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
754 -- The first byte contains the number of bytes to skip to find the
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
755 actual start of the table. This deals with alignment constraints,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
756 since the table might want to go at any arbitrary place in memory.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
757 -- The next three bytes contain the number of bytes to skip (from the
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
758 *first* byte) to find the stuff after the table. It's stored in
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
759 little-endian format because that's how God intended things. We don't
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
760 necessarily start the stuff at the very end of the table because
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
761 we want to have at least ALIGNOF (EMACS_INT) extra space in case
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
762 we have to move the range table around. (It appears that some
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
763 architectures don't maintain alignment when reallocing.)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
764 -- At the prescribed offset is a struct unified_range_table, containing
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
765 some number of `struct range_table_entry' entries. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
766
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
767 struct unified_range_table
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
768 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
769 int nentries;
4831
2e15c29cc2b3 fix bug in returning range table ends in unified range table code
Ben Wing <ben@xemacs.org>
parents: 4713
diff changeset
770 enum range_table_type type;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
771 struct range_table_entry first;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
772 };
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
773
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
774 /* Return size in bytes needed to store the data in a range table. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
775
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
776 int
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
777 unified_range_table_bytes_needed (Lisp_Object rangetab)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
778 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
779 return (sizeof (struct range_table_entry) *
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
780 (Dynarr_length (XRANGE_TABLE (rangetab)->entries) - 1) +
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
781 sizeof (struct unified_range_table) +
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
782 /* ALIGNOF a struct may be too big. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
783 /* We have four bytes for the size numbers, and an extra
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
784 four or eight bytes for making sure we get the alignment
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
785 OK. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
786 ALIGNOF (EMACS_INT) + 4);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
787 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
788
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
789 /* Convert a range table into unified format and store in DEST,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
790 which must be able to hold the number of bytes returned by
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
791 range_table_bytes_needed(). */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
792
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
793 void
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
794 unified_range_table_copy_data (Lisp_Object rangetab, void *dest)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
795 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
796 /* We cast to the above structure rather than just casting to
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
797 char * and adding sizeof(int), because that will lead to
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
798 mis-aligned data on the Alpha machines. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
799 struct unified_range_table *un;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
800 range_table_entry_dynarr *rted = XRANGE_TABLE (rangetab)->entries;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
801 int total_needed = unified_range_table_bytes_needed (rangetab);
826
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 800
diff changeset
802 void *new_dest = ALIGN_PTR ((char *) dest + 4, EMACS_INT);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
803
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
804 * (char *) dest = (char) ((char *) new_dest - (char *) dest);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
805 * ((unsigned char *) dest + 1) = total_needed & 0xFF;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
806 total_needed >>= 8;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
807 * ((unsigned char *) dest + 2) = total_needed & 0xFF;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
808 total_needed >>= 8;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
809 * ((unsigned char *) dest + 3) = total_needed & 0xFF;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
810 un = (struct unified_range_table *) new_dest;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
811 un->nentries = Dynarr_length (rted);
4831
2e15c29cc2b3 fix bug in returning range table ends in unified range table code
Ben Wing <ben@xemacs.org>
parents: 4713
diff changeset
812 un->type = XRANGE_TABLE (rangetab)->type;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
813 memcpy (&un->first, Dynarr_atp (rted, 0),
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
814 sizeof (struct range_table_entry) * Dynarr_length (rted));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
815 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
816
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
817 /* Return number of bytes actually used by a unified range table. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
818
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
819 int
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
820 unified_range_table_bytes_used (void *unrangetab)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
821 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
822 return ((* ((unsigned char *) unrangetab + 1))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
823 + ((* ((unsigned char *) unrangetab + 2)) << 8)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
824 + ((* ((unsigned char *) unrangetab + 3)) << 16));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
825 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
826
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
827 /* Make sure the table is aligned, and move it around if it's not. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
828 static void
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
829 align_the_damn_table (void *unrangetab)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
830 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
831 void *cur_dest = (char *) unrangetab + * (char *) unrangetab;
826
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 800
diff changeset
832 if (cur_dest != ALIGN_PTR (cur_dest, EMACS_INT))
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
833 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
834 int count = (unified_range_table_bytes_used (unrangetab) - 4
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
835 - ALIGNOF (EMACS_INT));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
836 /* Find the proper location, just like above. */
826
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 800
diff changeset
837 void *new_dest = ALIGN_PTR ((char *) unrangetab + 4, EMACS_INT);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
838 /* memmove() works in the presence of overlapping data. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
839 memmove (new_dest, cur_dest, count);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
840 * (char *) unrangetab = (char) ((char *) new_dest - (char *) unrangetab);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
841 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
842 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
843
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
844 /* Look up a value in a unified range table. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
845
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
846 Lisp_Object
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
847 unified_range_table_lookup (void *unrangetab, EMACS_INT pos,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
848 Lisp_Object default_)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
849 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
850 void *new_dest;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
851 struct unified_range_table *un;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
852
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
853 align_the_damn_table (unrangetab);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
854 new_dest = (char *) unrangetab + * (char *) unrangetab;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
855 un = (struct unified_range_table *) new_dest;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
856
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
857 return get_range_table (pos, un->nentries, &un->first, default_);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
858 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
859
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
860 /* Return number of entries in a unified range table. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
861
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
862 int
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
863 unified_range_table_nentries (void *unrangetab)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
864 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
865 void *new_dest;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
866 struct unified_range_table *un;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
867
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
868 align_the_damn_table (unrangetab);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
869 new_dest = (char *) unrangetab + * (char *) unrangetab;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
870 un = (struct unified_range_table *) new_dest;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
871 return un->nentries;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
872 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
873
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
874 /* Return the OFFSETth range (counting from 0) in UNRANGETAB. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
875 void
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
876 unified_range_table_get_range (void *unrangetab, int offset,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
877 EMACS_INT *min, EMACS_INT *max,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
878 Lisp_Object *val)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
879 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
880 void *new_dest;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
881 struct unified_range_table *un;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
882 struct range_table_entry *tab;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
883
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
884 align_the_damn_table (unrangetab);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
885 new_dest = (char *) unrangetab + * (char *) unrangetab;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
886 un = (struct unified_range_table *) new_dest;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
887
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
888 assert (offset >= 0 && offset < un->nentries);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
889 tab = (&un->first) + offset;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
890 *min = tab->first;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
891 *max = tab->last;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
892 *val = tab->val;
4831
2e15c29cc2b3 fix bug in returning range table ends in unified range table code
Ben Wing <ben@xemacs.org>
parents: 4713
diff changeset
893
2e15c29cc2b3 fix bug in returning range table ends in unified range table code
Ben Wing <ben@xemacs.org>
parents: 4713
diff changeset
894 internal_to_external_adjust_ends (un->type, min, max);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
895 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
896
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
897
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
898 /************************************************************************/
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
899 /* Initialization */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
900 /************************************************************************/
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
901
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
902 void
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
903 syms_of_rangetab (void)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
904 {
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
905 INIT_LRECORD_IMPLEMENTATION (range_table);
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
906
563
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 444
diff changeset
907 DEFSYMBOL_MULTIWORD_PREDICATE (Qrange_tablep);
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 444
diff changeset
908 DEFSYMBOL (Qrange_table);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
909
2421
ab71ad6ff3dd [xemacs-hg @ 2004-12-06 03:50:53 by ben]
ben
parents: 2367
diff changeset
910 DEFSYMBOL (Qstart_closed_end_open);
ab71ad6ff3dd [xemacs-hg @ 2004-12-06 03:50:53 by ben]
ben
parents: 2367
diff changeset
911 DEFSYMBOL (Qstart_open_end_open);
ab71ad6ff3dd [xemacs-hg @ 2004-12-06 03:50:53 by ben]
ben
parents: 2367
diff changeset
912 DEFSYMBOL (Qstart_closed_end_closed);
ab71ad6ff3dd [xemacs-hg @ 2004-12-06 03:50:53 by ben]
ben
parents: 2367
diff changeset
913 DEFSYMBOL (Qstart_open_end_closed);
ab71ad6ff3dd [xemacs-hg @ 2004-12-06 03:50:53 by ben]
ben
parents: 2367
diff changeset
914
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
915 DEFSUBR (Frange_table_p);
2421
ab71ad6ff3dd [xemacs-hg @ 2004-12-06 03:50:53 by ben]
ben
parents: 2367
diff changeset
916 DEFSUBR (Frange_table_type);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
917 DEFSUBR (Fmake_range_table);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
918 DEFSUBR (Fcopy_range_table);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
919 DEFSUBR (Fget_range_table);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
920 DEFSUBR (Fput_range_table);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
921 DEFSUBR (Fremove_range_table);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
922 DEFSUBR (Fclear_range_table);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
923 DEFSUBR (Fmap_range_table);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
924 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
925
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
926 void
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
927 structure_type_create_rangetab (void)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
928 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
929 struct structure_type *st;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
930
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
931 st = define_structure_type (Qrange_table, 0, rangetab_instantiate);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
932
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
933 define_structure_type_keyword (st, Qdata, rangetab_data_validate);
2421
ab71ad6ff3dd [xemacs-hg @ 2004-12-06 03:50:53 by ben]
ben
parents: 2367
diff changeset
934 define_structure_type_keyword (st, Qtype, rangetab_type_validate);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
935 }