| 1 | /*␊ |
| 2 | * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>␊ |
| 3 | * Released under the terms of the GNU GPL v2.0.␊ |
| 4 | */␊ |
| 5 | ␊ |
| 6 | #include <ctype.h>␊ |
| 7 | #include <stdlib.h>␊ |
| 8 | #include <string.h>␊ |
| 9 | #include <regex.h>␊ |
| 10 | #include <sys/utsname.h>␊ |
| 11 | ␊ |
| 12 | #define LKC_DIRECT_LINK␊ |
| 13 | #include "lkc.h"␊ |
| 14 | ␊ |
| 15 | struct symbol symbol_yes = {␊ |
| 16 | ␉.name = "y",␊ |
| 17 | ␉.curr = { "y", yes },␊ |
| 18 | ␉.flags = SYMBOL_CONST|SYMBOL_VALID,␊ |
| 19 | }, symbol_mod = {␊ |
| 20 | ␉.name = "m",␊ |
| 21 | ␉.curr = { "m", mod },␊ |
| 22 | ␉.flags = SYMBOL_CONST|SYMBOL_VALID,␊ |
| 23 | }, symbol_no = {␊ |
| 24 | ␉.name = "n",␊ |
| 25 | ␉.curr = { "n", no },␊ |
| 26 | ␉.flags = SYMBOL_CONST|SYMBOL_VALID,␊ |
| 27 | }, symbol_empty = {␊ |
| 28 | ␉.name = "",␊ |
| 29 | ␉.curr = { "", no },␊ |
| 30 | ␉.flags = SYMBOL_VALID,␊ |
| 31 | };␊ |
| 32 | ␊ |
| 33 | struct symbol *sym_defconfig_list;␊ |
| 34 | struct symbol *modules_sym;␊ |
| 35 | tristate modules_val;␊ |
| 36 | ␊ |
| 37 | struct expr *sym_env_list;␊ |
| 38 | ␊ |
| 39 | static void sym_add_default(struct symbol *sym, const char *def)␊ |
| 40 | {␊ |
| 41 | ␉struct property *prop = prop_alloc(P_DEFAULT, sym);␊ |
| 42 | ␊ |
| 43 | ␉prop->expr = expr_alloc_symbol(sym_lookup(def, SYMBOL_CONST));␊ |
| 44 | }␊ |
| 45 | ␊ |
| 46 | void sym_init(void)␊ |
| 47 | {␊ |
| 48 | ␉struct symbol *sym;␊ |
| 49 | ␉struct utsname uts;␊ |
| 50 | ␉static bool inited = false;␊ |
| 51 | ␊ |
| 52 | ␉if (inited)␊ |
| 53 | ␉␉return;␊ |
| 54 | ␉inited = true;␊ |
| 55 | ␊ |
| 56 | ␉uname(&uts);␊ |
| 57 | ␊ |
| 58 | ␉sym = sym_lookup("UNAME_RELEASE", 0);␊ |
| 59 | ␉sym->type = S_STRING;␊ |
| 60 | ␉sym->flags |= SYMBOL_AUTO;␊ |
| 61 | ␉sym_add_default(sym, uts.release);␊ |
| 62 | }␊ |
| 63 | ␊ |
| 64 | enum symbol_type sym_get_type(struct symbol *sym)␊ |
| 65 | {␊ |
| 66 | ␉enum symbol_type type = sym->type;␊ |
| 67 | ␊ |
| 68 | ␉if (type == S_TRISTATE) {␊ |
| 69 | ␉␉if (sym_is_choice_value(sym) && sym->visible == yes)␊ |
| 70 | ␉␉␉type = S_BOOLEAN;␊ |
| 71 | ␉␉else if (modules_val == no)␊ |
| 72 | ␉␉␉type = S_BOOLEAN;␊ |
| 73 | ␉}␊ |
| 74 | ␉return type;␊ |
| 75 | }␊ |
| 76 | ␊ |
| 77 | const char *sym_type_name(enum symbol_type type)␊ |
| 78 | {␊ |
| 79 | ␉switch (type) {␊ |
| 80 | ␉case S_BOOLEAN:␊ |
| 81 | ␉␉return "boolean";␊ |
| 82 | ␉case S_TRISTATE:␊ |
| 83 | ␉␉return "tristate";␊ |
| 84 | ␉case S_INT:␊ |
| 85 | ␉␉return "integer";␊ |
| 86 | ␉case S_HEX:␊ |
| 87 | ␉␉return "hex";␊ |
| 88 | ␉case S_STRING:␊ |
| 89 | ␉␉return "string";␊ |
| 90 | ␉case S_UNKNOWN:␊ |
| 91 | ␉␉return "unknown";␊ |
| 92 | ␉case S_OTHER:␊ |
| 93 | ␉␉break;␊ |
| 94 | ␉}␊ |
| 95 | ␉return "???";␊ |
| 96 | }␊ |
| 97 | ␊ |
| 98 | struct property *sym_get_choice_prop(struct symbol *sym)␊ |
| 99 | {␊ |
| 100 | ␉struct property *prop;␊ |
| 101 | ␊ |
| 102 | ␉for_all_choices(sym, prop)␊ |
| 103 | ␉␉return prop;␊ |
| 104 | ␉return NULL;␊ |
| 105 | }␊ |
| 106 | ␊ |
| 107 | struct property *sym_get_env_prop(struct symbol *sym)␊ |
| 108 | {␊ |
| 109 | ␉struct property *prop;␊ |
| 110 | ␊ |
| 111 | ␉for_all_properties(sym, prop, P_ENV)␊ |
| 112 | ␉␉return prop;␊ |
| 113 | ␉return NULL;␊ |
| 114 | }␊ |
| 115 | ␊ |
| 116 | struct property *sym_get_default_prop(struct symbol *sym)␊ |
| 117 | {␊ |
| 118 | ␉struct property *prop;␊ |
| 119 | ␊ |
| 120 | ␉for_all_defaults(sym, prop) {␊ |
| 121 | ␉␉prop->visible.tri = expr_calc_value(prop->visible.expr);␊ |
| 122 | ␉␉if (prop->visible.tri != no)␊ |
| 123 | ␉␉␉return prop;␊ |
| 124 | ␉}␊ |
| 125 | ␉return NULL;␊ |
| 126 | }␊ |
| 127 | ␊ |
| 128 | static struct property *sym_get_range_prop(struct symbol *sym)␊ |
| 129 | {␊ |
| 130 | ␉struct property *prop;␊ |
| 131 | ␊ |
| 132 | ␉for_all_properties(sym, prop, P_RANGE) {␊ |
| 133 | ␉␉prop->visible.tri = expr_calc_value(prop->visible.expr);␊ |
| 134 | ␉␉if (prop->visible.tri != no)␊ |
| 135 | ␉␉␉return prop;␊ |
| 136 | ␉}␊ |
| 137 | ␉return NULL;␊ |
| 138 | }␊ |
| 139 | ␊ |
| 140 | static int sym_get_range_val(struct symbol *sym, int base)␊ |
| 141 | {␊ |
| 142 | ␉sym_calc_value(sym);␊ |
| 143 | ␉switch (sym->type) {␊ |
| 144 | ␉case S_INT:␊ |
| 145 | ␉␉base = 10;␊ |
| 146 | ␉␉break;␊ |
| 147 | ␉case S_HEX:␊ |
| 148 | ␉␉base = 16;␊ |
| 149 | ␉␉break;␊ |
| 150 | ␉default:␊ |
| 151 | ␉␉break;␊ |
| 152 | ␉}␊ |
| 153 | ␉return strtol(sym->curr.val, NULL, base);␊ |
| 154 | }␊ |
| 155 | ␊ |
| 156 | static void sym_validate_range(struct symbol *sym)␊ |
| 157 | {␊ |
| 158 | ␉struct property *prop;␊ |
| 159 | ␉int base, val, val2;␊ |
| 160 | ␉char str[64];␊ |
| 161 | ␊ |
| 162 | ␉switch (sym->type) {␊ |
| 163 | ␉case S_INT:␊ |
| 164 | ␉␉base = 10;␊ |
| 165 | ␉␉break;␊ |
| 166 | ␉case S_HEX:␊ |
| 167 | ␉␉base = 16;␊ |
| 168 | ␉␉break;␊ |
| 169 | ␉default:␊ |
| 170 | ␉␉return;␊ |
| 171 | ␉}␊ |
| 172 | ␉prop = sym_get_range_prop(sym);␊ |
| 173 | ␉if (!prop)␊ |
| 174 | ␉␉return;␊ |
| 175 | ␉val = strtol(sym->curr.val, NULL, base);␊ |
| 176 | ␉val2 = sym_get_range_val(prop->expr->left.sym, base);␊ |
| 177 | ␉if (val >= val2) {␊ |
| 178 | ␉␉val2 = sym_get_range_val(prop->expr->right.sym, base);␊ |
| 179 | ␉␉if (val <= val2)␊ |
| 180 | ␉␉␉return;␊ |
| 181 | ␉}␊ |
| 182 | ␉if (sym->type == S_INT)␊ |
| 183 | ␉␉sprintf(str, "%d", val2);␊ |
| 184 | ␉else␊ |
| 185 | ␉␉sprintf(str, "0x%x", val2);␊ |
| 186 | ␉sym->curr.val = strdup(str);␊ |
| 187 | }␊ |
| 188 | ␊ |
| 189 | static void sym_calc_visibility(struct symbol *sym)␊ |
| 190 | {␊ |
| 191 | ␉struct property *prop;␊ |
| 192 | ␉tristate tri;␊ |
| 193 | ␊ |
| 194 | ␉/* any prompt visible? */␊ |
| 195 | ␉tri = no;␊ |
| 196 | ␉for_all_prompts(sym, prop) {␊ |
| 197 | ␉␉prop->visible.tri = expr_calc_value(prop->visible.expr);␊ |
| 198 | ␉␉tri = EXPR_OR(tri, prop->visible.tri);␊ |
| 199 | ␉}␊ |
| 200 | ␉if (tri == mod && (sym->type != S_TRISTATE || modules_val == no))␊ |
| 201 | ␉␉tri = yes;␊ |
| 202 | ␉if (sym->visible != tri) {␊ |
| 203 | ␉␉sym->visible = tri;␊ |
| 204 | ␉␉sym_set_changed(sym);␊ |
| 205 | ␉}␊ |
| 206 | ␉if (sym_is_choice_value(sym))␊ |
| 207 | ␉␉return;␊ |
| 208 | ␉/* defaulting to "yes" if no explicit "depends on" are given */␊ |
| 209 | ␉tri = yes;␊ |
| 210 | ␉if (sym->dir_dep.expr)␊ |
| 211 | ␉␉tri = expr_calc_value(sym->dir_dep.expr);␊ |
| 212 | ␉if (tri == mod)␊ |
| 213 | ␉␉tri = yes;␊ |
| 214 | ␉if (sym->dir_dep.tri != tri) {␊ |
| 215 | ␉␉sym->dir_dep.tri = tri;␊ |
| 216 | ␉␉sym_set_changed(sym);␊ |
| 217 | ␉}␊ |
| 218 | ␉tri = no;␊ |
| 219 | ␉if (sym->rev_dep.expr)␊ |
| 220 | ␉␉tri = expr_calc_value(sym->rev_dep.expr);␊ |
| 221 | ␉if (tri == mod && sym_get_type(sym) == S_BOOLEAN)␊ |
| 222 | ␉␉tri = yes;␊ |
| 223 | ␉if (sym->rev_dep.tri != tri) {␊ |
| 224 | ␉␉sym->rev_dep.tri = tri;␊ |
| 225 | ␉␉sym_set_changed(sym);␊ |
| 226 | ␉}␊ |
| 227 | }␊ |
| 228 | ␊ |
| 229 | /*␊ |
| 230 | * Find the default symbol for a choice.␊ |
| 231 | * First try the default values for the choice symbol␊ |
| 232 | * Next locate the first visible choice value␊ |
| 233 | * Return NULL if none was found␊ |
| 234 | */␊ |
| 235 | struct symbol *sym_choice_default(struct symbol *sym)␊ |
| 236 | {␊ |
| 237 | ␉struct symbol *def_sym;␊ |
| 238 | ␉struct property *prop;␊ |
| 239 | ␉struct expr *e;␊ |
| 240 | ␊ |
| 241 | ␉/* any of the defaults visible? */␊ |
| 242 | ␉for_all_defaults(sym, prop) {␊ |
| 243 | ␉␉prop->visible.tri = expr_calc_value(prop->visible.expr);␊ |
| 244 | ␉␉if (prop->visible.tri == no)␊ |
| 245 | ␉␉␉continue;␊ |
| 246 | ␉␉def_sym = prop_get_symbol(prop);␊ |
| 247 | ␉␉if (def_sym->visible != no)␊ |
| 248 | ␉␉␉return def_sym;␊ |
| 249 | ␉}␊ |
| 250 | ␊ |
| 251 | ␉/* just get the first visible value */␊ |
| 252 | ␉prop = sym_get_choice_prop(sym);␊ |
| 253 | ␉expr_list_for_each_sym(prop->expr, e, def_sym)␊ |
| 254 | ␉␉if (def_sym->visible != no)␊ |
| 255 | ␉␉␉return def_sym;␊ |
| 256 | ␊ |
| 257 | ␉/* failed to locate any defaults */␊ |
| 258 | ␉return NULL;␊ |
| 259 | }␊ |
| 260 | ␊ |
| 261 | static struct symbol *sym_calc_choice(struct symbol *sym)␊ |
| 262 | {␊ |
| 263 | ␉struct symbol *def_sym;␊ |
| 264 | ␉struct property *prop;␊ |
| 265 | ␉struct expr *e;␊ |
| 266 | ␊ |
| 267 | ␉/* first calculate all choice values' visibilities */␊ |
| 268 | ␉prop = sym_get_choice_prop(sym);␊ |
| 269 | ␉expr_list_for_each_sym(prop->expr, e, def_sym)␊ |
| 270 | ␉␉sym_calc_visibility(def_sym);␊ |
| 271 | ␊ |
| 272 | ␉/* is the user choice visible? */␊ |
| 273 | ␉def_sym = sym->def[S_DEF_USER].val;␊ |
| 274 | ␉if (def_sym && def_sym->visible != no)␊ |
| 275 | ␉␉return def_sym;␊ |
| 276 | ␊ |
| 277 | ␉def_sym = sym_choice_default(sym);␊ |
| 278 | ␊ |
| 279 | ␉if (def_sym == NULL)␊ |
| 280 | ␉␉/* no choice? reset tristate value */␊ |
| 281 | ␉␉sym->curr.tri = no;␊ |
| 282 | ␊ |
| 283 | ␉return def_sym;␊ |
| 284 | }␊ |
| 285 | ␊ |
| 286 | void sym_calc_value(struct symbol *sym)␊ |
| 287 | {␊ |
| 288 | ␉struct symbol_value newval, oldval;␊ |
| 289 | ␉struct property *prop;␊ |
| 290 | ␉struct expr *e;␊ |
| 291 | ␊ |
| 292 | ␉if (!sym)␊ |
| 293 | ␉␉return;␊ |
| 294 | ␊ |
| 295 | ␉if (sym->flags & SYMBOL_VALID)␊ |
| 296 | ␉␉return;␊ |
| 297 | ␉sym->flags |= SYMBOL_VALID;␊ |
| 298 | ␊ |
| 299 | ␉oldval = sym->curr;␊ |
| 300 | ␊ |
| 301 | ␉switch (sym->type) {␊ |
| 302 | ␉case S_INT:␊ |
| 303 | ␉case S_HEX:␊ |
| 304 | ␉case S_STRING:␊ |
| 305 | ␉␉newval = symbol_empty.curr;␊ |
| 306 | ␉␉break;␊ |
| 307 | ␉case S_BOOLEAN:␊ |
| 308 | ␉case S_TRISTATE:␊ |
| 309 | ␉␉newval = symbol_no.curr;␊ |
| 310 | ␉␉break;␊ |
| 311 | ␉default:␊ |
| 312 | ␉␉sym->curr.val = sym->name;␊ |
| 313 | ␉␉sym->curr.tri = no;␊ |
| 314 | ␉␉return;␊ |
| 315 | ␉}␊ |
| 316 | ␉if (!sym_is_choice_value(sym))␊ |
| 317 | ␉␉sym->flags &= ~SYMBOL_WRITE;␊ |
| 318 | ␊ |
| 319 | ␉sym_calc_visibility(sym);␊ |
| 320 | ␊ |
| 321 | ␉/* set default if recursively called */␊ |
| 322 | ␉sym->curr = newval;␊ |
| 323 | ␊ |
| 324 | ␉switch (sym_get_type(sym)) {␊ |
| 325 | ␉case S_BOOLEAN:␊ |
| 326 | ␉case S_TRISTATE:␊ |
| 327 | ␉␉if (sym_is_choice_value(sym) && sym->visible == yes) {␊ |
| 328 | ␉␉␉prop = sym_get_choice_prop(sym);␊ |
| 329 | ␉␉␉newval.tri = (prop_get_symbol(prop)->curr.val == sym) ? yes : no;␊ |
| 330 | ␉␉} else {␊ |
| 331 | ␉␉␉if (sym->visible != no) {␊ |
| 332 | ␉␉␉␉/* if the symbol is visible use the user value␊ |
| 333 | ␉␉␉␉ * if available, otherwise try the default value␊ |
| 334 | ␉␉␉␉ */␊ |
| 335 | ␉␉␉␉sym->flags |= SYMBOL_WRITE;␊ |
| 336 | ␉␉␉␉if (sym_has_value(sym)) {␊ |
| 337 | ␉␉␉␉␉newval.tri = EXPR_AND(sym->def[S_DEF_USER].tri,␊ |
| 338 | ␉␉␉␉␉␉␉ sym->visible);␊ |
| 339 | ␉␉␉␉␉goto calc_newval;␊ |
| 340 | ␉␉␉␉}␊ |
| 341 | ␉␉␉}␊ |
| 342 | ␉␉␉if (sym->rev_dep.tri != no)␊ |
| 343 | ␉␉␉␉sym->flags |= SYMBOL_WRITE;␊ |
| 344 | ␉␉␉if (!sym_is_choice(sym)) {␊ |
| 345 | ␉␉␉␉prop = sym_get_default_prop(sym);␊ |
| 346 | ␉␉␉␉if (prop) {␊ |
| 347 | ␉␉␉␉␉sym->flags |= SYMBOL_WRITE;␊ |
| 348 | ␉␉␉␉␉newval.tri = EXPR_AND(expr_calc_value(prop->expr),␊ |
| 349 | ␉␉␉␉␉␉␉ prop->visible.tri);␊ |
| 350 | ␉␉␉␉}␊ |
| 351 | ␉␉␉}␊ |
| 352 | ␉␉calc_newval:␊ |
| 353 | ␉␉␉if (sym->dir_dep.tri == no && sym->rev_dep.tri != no) {␊ |
| 354 | ␉␉␉␉struct expr *e;␊ |
| 355 | ␉␉␉␉e = expr_simplify_unmet_dep(sym->rev_dep.expr,␊ |
| 356 | ␉␉␉␉ sym->dir_dep.expr);␊ |
| 357 | ␉␉␉␉fprintf(stderr, "warning: (");␊ |
| 358 | ␉␉␉␉expr_fprint(e, stderr);␊ |
| 359 | ␉␉␉␉fprintf(stderr, ") selects %s which has unmet direct dependencies (",␊ |
| 360 | ␉␉␉␉␉sym->name);␊ |
| 361 | ␉␉␉␉expr_fprint(sym->dir_dep.expr, stderr);␊ |
| 362 | ␉␉␉␉fprintf(stderr, ")\n");␊ |
| 363 | ␉␉␉␉expr_free(e);␊ |
| 364 | ␉␉␉}␊ |
| 365 | ␉␉␉newval.tri = EXPR_OR(newval.tri, sym->rev_dep.tri);␊ |
| 366 | ␉␉}␊ |
| 367 | ␉␉if (newval.tri == mod && sym_get_type(sym) == S_BOOLEAN)␊ |
| 368 | ␉␉␉newval.tri = yes;␊ |
| 369 | ␉␉break;␊ |
| 370 | ␉case S_STRING:␊ |
| 371 | ␉case S_HEX:␊ |
| 372 | ␉case S_INT:␊ |
| 373 | ␉␉if (sym->visible != no) {␊ |
| 374 | ␉␉␉sym->flags |= SYMBOL_WRITE;␊ |
| 375 | ␉␉␉if (sym_has_value(sym)) {␊ |
| 376 | ␉␉␉␉newval.val = sym->def[S_DEF_USER].val;␊ |
| 377 | ␉␉␉␉break;␊ |
| 378 | ␉␉␉}␊ |
| 379 | ␉␉}␊ |
| 380 | ␉␉prop = sym_get_default_prop(sym);␊ |
| 381 | ␉␉if (prop) {␊ |
| 382 | ␉␉␉struct symbol *ds = prop_get_symbol(prop);␊ |
| 383 | ␉␉␉if (ds) {␊ |
| 384 | ␉␉␉␉sym->flags |= SYMBOL_WRITE;␊ |
| 385 | ␉␉␉␉sym_calc_value(ds);␊ |
| 386 | ␉␉␉␉newval.val = ds->curr.val;␊ |
| 387 | ␉␉␉}␊ |
| 388 | ␉␉}␊ |
| 389 | ␉␉break;␊ |
| 390 | ␉default:␊ |
| 391 | ␉␉;␊ |
| 392 | ␉}␊ |
| 393 | ␊ |
| 394 | ␉sym->curr = newval;␊ |
| 395 | ␉if (sym_is_choice(sym) && newval.tri == yes)␊ |
| 396 | ␉␉sym->curr.val = sym_calc_choice(sym);␊ |
| 397 | ␉sym_validate_range(sym);␊ |
| 398 | ␊ |
| 399 | ␉if (memcmp(&oldval, &sym->curr, sizeof(oldval))) {␊ |
| 400 | ␉␉sym_set_changed(sym);␊ |
| 401 | ␉␉if (modules_sym == sym) {␊ |
| 402 | ␉␉␉sym_set_all_changed();␊ |
| 403 | ␉␉␉modules_val = modules_sym->curr.tri;␊ |
| 404 | ␉␉}␊ |
| 405 | ␉}␊ |
| 406 | ␊ |
| 407 | ␉if (sym_is_choice(sym)) {␊ |
| 408 | ␉␉struct symbol *choice_sym;␊ |
| 409 | ␊ |
| 410 | ␉␉prop = sym_get_choice_prop(sym);␊ |
| 411 | ␉␉expr_list_for_each_sym(prop->expr, e, choice_sym) {␊ |
| 412 | ␉␉␉if ((sym->flags & SYMBOL_WRITE) &&␊ |
| 413 | ␉␉␉ choice_sym->visible != no)␊ |
| 414 | ␉␉␉␉choice_sym->flags |= SYMBOL_WRITE;␊ |
| 415 | ␉␉␉if (sym->flags & SYMBOL_CHANGED)␊ |
| 416 | ␉␉␉␉sym_set_changed(choice_sym);␊ |
| 417 | ␉␉}␊ |
| 418 | ␉}␊ |
| 419 | ␊ |
| 420 | ␉if (sym->flags & SYMBOL_AUTO)␊ |
| 421 | ␉␉sym->flags &= ~SYMBOL_WRITE;␊ |
| 422 | }␊ |
| 423 | ␊ |
| 424 | void sym_clear_all_valid(void)␊ |
| 425 | {␊ |
| 426 | ␉struct symbol *sym;␊ |
| 427 | ␉int i;␊ |
| 428 | ␊ |
| 429 | ␉for_all_symbols(i, sym)␊ |
| 430 | ␉␉sym->flags &= ~SYMBOL_VALID;␊ |
| 431 | ␉sym_add_change_count(1);␊ |
| 432 | ␉if (modules_sym)␊ |
| 433 | ␉␉sym_calc_value(modules_sym);␊ |
| 434 | }␊ |
| 435 | ␊ |
| 436 | void sym_set_changed(struct symbol *sym)␊ |
| 437 | {␊ |
| 438 | ␉struct property *prop;␊ |
| 439 | ␊ |
| 440 | ␉sym->flags |= SYMBOL_CHANGED;␊ |
| 441 | ␉for (prop = sym->prop; prop; prop = prop->next) {␊ |
| 442 | ␉␉if (prop->menu)␊ |
| 443 | ␉␉␉prop->menu->flags |= MENU_CHANGED;␊ |
| 444 | ␉}␊ |
| 445 | }␊ |
| 446 | ␊ |
| 447 | void sym_set_all_changed(void)␊ |
| 448 | {␊ |
| 449 | ␉struct symbol *sym;␊ |
| 450 | ␉int i;␊ |
| 451 | ␊ |
| 452 | ␉for_all_symbols(i, sym)␊ |
| 453 | ␉␉sym_set_changed(sym);␊ |
| 454 | }␊ |
| 455 | ␊ |
| 456 | bool sym_tristate_within_range(struct symbol *sym, tristate val)␊ |
| 457 | {␊ |
| 458 | ␉int type = sym_get_type(sym);␊ |
| 459 | ␊ |
| 460 | ␉if (sym->visible == no)␊ |
| 461 | ␉␉return false;␊ |
| 462 | ␊ |
| 463 | ␉if (type != S_BOOLEAN && type != S_TRISTATE)␊ |
| 464 | ␉␉return false;␊ |
| 465 | ␊ |
| 466 | ␉if (type == S_BOOLEAN && val == mod)␊ |
| 467 | ␉␉return false;␊ |
| 468 | ␉if (sym->visible <= sym->rev_dep.tri)␊ |
| 469 | ␉␉return false;␊ |
| 470 | ␉if (sym_is_choice_value(sym) && sym->visible == yes)␊ |
| 471 | ␉␉return val == yes;␊ |
| 472 | ␉return val >= sym->rev_dep.tri && val <= sym->visible;␊ |
| 473 | }␊ |
| 474 | ␊ |
| 475 | bool sym_set_tristate_value(struct symbol *sym, tristate val)␊ |
| 476 | {␊ |
| 477 | ␉tristate oldval = sym_get_tristate_value(sym);␊ |
| 478 | ␊ |
| 479 | ␉if (oldval != val && !sym_tristate_within_range(sym, val))␊ |
| 480 | ␉␉return false;␊ |
| 481 | ␊ |
| 482 | ␉if (!(sym->flags & SYMBOL_DEF_USER)) {␊ |
| 483 | ␉␉sym->flags |= SYMBOL_DEF_USER;␊ |
| 484 | ␉␉sym_set_changed(sym);␊ |
| 485 | ␉}␊ |
| 486 | ␉/*␊ |
| 487 | ␉ * setting a choice value also resets the new flag of the choice␊ |
| 488 | ␉ * symbol and all other choice values.␊ |
| 489 | ␉ */␊ |
| 490 | ␉if (sym_is_choice_value(sym) && val == yes) {␊ |
| 491 | ␉␉struct symbol *cs = prop_get_symbol(sym_get_choice_prop(sym));␊ |
| 492 | ␉␉struct property *prop;␊ |
| 493 | ␉␉struct expr *e;␊ |
| 494 | ␊ |
| 495 | ␉␉cs->def[S_DEF_USER].val = sym;␊ |
| 496 | ␉␉cs->flags |= SYMBOL_DEF_USER;␊ |
| 497 | ␉␉prop = sym_get_choice_prop(cs);␊ |
| 498 | ␉␉for (e = prop->expr; e; e = e->left.expr) {␊ |
| 499 | ␉␉␉if (e->right.sym->visible != no)␊ |
| 500 | ␉␉␉␉e->right.sym->flags |= SYMBOL_DEF_USER;␊ |
| 501 | ␉␉}␊ |
| 502 | ␉}␊ |
| 503 | ␊ |
| 504 | ␉sym->def[S_DEF_USER].tri = val;␊ |
| 505 | ␉if (oldval != val)␊ |
| 506 | ␉␉sym_clear_all_valid();␊ |
| 507 | ␊ |
| 508 | ␉return true;␊ |
| 509 | }␊ |
| 510 | ␊ |
| 511 | tristate sym_toggle_tristate_value(struct symbol *sym)␊ |
| 512 | {␊ |
| 513 | ␉tristate oldval, newval;␊ |
| 514 | ␊ |
| 515 | ␉oldval = newval = sym_get_tristate_value(sym);␊ |
| 516 | ␉do {␊ |
| 517 | ␉␉switch (newval) {␊ |
| 518 | ␉␉case no:␊ |
| 519 | ␉␉␉newval = mod;␊ |
| 520 | ␉␉␉break;␊ |
| 521 | ␉␉case mod:␊ |
| 522 | ␉␉␉newval = yes;␊ |
| 523 | ␉␉␉break;␊ |
| 524 | ␉␉case yes:␊ |
| 525 | ␉␉␉newval = no;␊ |
| 526 | ␉␉␉break;␊ |
| 527 | ␉␉}␊ |
| 528 | ␉␉if (sym_set_tristate_value(sym, newval))␊ |
| 529 | ␉␉␉break;␊ |
| 530 | ␉} while (oldval != newval);␊ |
| 531 | ␉return newval;␊ |
| 532 | }␊ |
| 533 | ␊ |
| 534 | bool sym_string_valid(struct symbol *sym, const char *str)␊ |
| 535 | {␊ |
| 536 | ␉signed char ch;␊ |
| 537 | ␊ |
| 538 | ␉switch (sym->type) {␊ |
| 539 | ␉case S_STRING:␊ |
| 540 | ␉␉return true;␊ |
| 541 | ␉case S_INT:␊ |
| 542 | ␉␉ch = *str++;␊ |
| 543 | ␉␉if (ch == '-')␊ |
| 544 | ␉␉␉ch = *str++;␊ |
| 545 | ␉␉if (!isdigit(ch))␊ |
| 546 | ␉␉␉return false;␊ |
| 547 | ␉␉if (ch == '0' && *str != 0)␊ |
| 548 | ␉␉␉return false;␊ |
| 549 | ␉␉while ((ch = *str++)) {␊ |
| 550 | ␉␉␉if (!isdigit(ch))␊ |
| 551 | ␉␉␉␉return false;␊ |
| 552 | ␉␉}␊ |
| 553 | ␉␉return true;␊ |
| 554 | ␉case S_HEX:␊ |
| 555 | ␉␉if (str[0] == '0' && (str[1] == 'x' || str[1] == 'X'))␊ |
| 556 | ␉␉␉str += 2;␊ |
| 557 | ␉␉ch = *str++;␊ |
| 558 | ␉␉do {␊ |
| 559 | ␉␉␉if (!isxdigit(ch))␊ |
| 560 | ␉␉␉␉return false;␊ |
| 561 | ␉␉} while ((ch = *str++));␊ |
| 562 | ␉␉return true;␊ |
| 563 | ␉case S_BOOLEAN:␊ |
| 564 | ␉case S_TRISTATE:␊ |
| 565 | ␉␉switch (str[0]) {␊ |
| 566 | ␉␉case 'y': case 'Y':␊ |
| 567 | ␉␉case 'm': case 'M':␊ |
| 568 | ␉␉case 'n': case 'N':␊ |
| 569 | ␉␉␉return true;␊ |
| 570 | ␉␉}␊ |
| 571 | ␉␉return false;␊ |
| 572 | ␉default:␊ |
| 573 | ␉␉return false;␊ |
| 574 | ␉}␊ |
| 575 | }␊ |
| 576 | ␊ |
| 577 | bool sym_string_within_range(struct symbol *sym, const char *str)␊ |
| 578 | {␊ |
| 579 | ␉struct property *prop;␊ |
| 580 | ␉int val;␊ |
| 581 | ␊ |
| 582 | ␉switch (sym->type) {␊ |
| 583 | ␉case S_STRING:␊ |
| 584 | ␉␉return sym_string_valid(sym, str);␊ |
| 585 | ␉case S_INT:␊ |
| 586 | ␉␉if (!sym_string_valid(sym, str))␊ |
| 587 | ␉␉␉return false;␊ |
| 588 | ␉␉prop = sym_get_range_prop(sym);␊ |
| 589 | ␉␉if (!prop)␊ |
| 590 | ␉␉␉return true;␊ |
| 591 | ␉␉val = strtol(str, NULL, 10);␊ |
| 592 | ␉␉return val >= sym_get_range_val(prop->expr->left.sym, 10) &&␊ |
| 593 | ␉␉ val <= sym_get_range_val(prop->expr->right.sym, 10);␊ |
| 594 | ␉case S_HEX:␊ |
| 595 | ␉␉if (!sym_string_valid(sym, str))␊ |
| 596 | ␉␉␉return false;␊ |
| 597 | ␉␉prop = sym_get_range_prop(sym);␊ |
| 598 | ␉␉if (!prop)␊ |
| 599 | ␉␉␉return true;␊ |
| 600 | ␉␉val = strtol(str, NULL, 16);␊ |
| 601 | ␉␉return val >= sym_get_range_val(prop->expr->left.sym, 16) &&␊ |
| 602 | ␉␉ val <= sym_get_range_val(prop->expr->right.sym, 16);␊ |
| 603 | ␉case S_BOOLEAN:␊ |
| 604 | ␉case S_TRISTATE:␊ |
| 605 | ␉␉switch (str[0]) {␊ |
| 606 | ␉␉case 'y': case 'Y':␊ |
| 607 | ␉␉␉return sym_tristate_within_range(sym, yes);␊ |
| 608 | ␉␉case 'm': case 'M':␊ |
| 609 | ␉␉␉return sym_tristate_within_range(sym, mod);␊ |
| 610 | ␉␉case 'n': case 'N':␊ |
| 611 | ␉␉␉return sym_tristate_within_range(sym, no);␊ |
| 612 | ␉␉}␊ |
| 613 | ␉␉return false;␊ |
| 614 | ␉default:␊ |
| 615 | ␉␉return false;␊ |
| 616 | ␉}␊ |
| 617 | }␊ |
| 618 | ␊ |
| 619 | bool sym_set_string_value(struct symbol *sym, const char *newval)␊ |
| 620 | {␊ |
| 621 | ␉const char *oldval;␊ |
| 622 | ␉char *val;␊ |
| 623 | ␉int size;␊ |
| 624 | ␊ |
| 625 | ␉switch (sym->type) {␊ |
| 626 | ␉case S_BOOLEAN:␊ |
| 627 | ␉case S_TRISTATE:␊ |
| 628 | ␉␉switch (newval[0]) {␊ |
| 629 | ␉␉case 'y': case 'Y':␊ |
| 630 | ␉␉␉return sym_set_tristate_value(sym, yes);␊ |
| 631 | ␉␉case 'm': case 'M':␊ |
| 632 | ␉␉␉return sym_set_tristate_value(sym, mod);␊ |
| 633 | ␉␉case 'n': case 'N':␊ |
| 634 | ␉␉␉return sym_set_tristate_value(sym, no);␊ |
| 635 | ␉␉}␊ |
| 636 | ␉␉return false;␊ |
| 637 | ␉default:␊ |
| 638 | ␉␉;␊ |
| 639 | ␉}␊ |
| 640 | ␊ |
| 641 | ␉if (!sym_string_within_range(sym, newval))␊ |
| 642 | ␉␉return false;␊ |
| 643 | ␊ |
| 644 | ␉if (!(sym->flags & SYMBOL_DEF_USER)) {␊ |
| 645 | ␉␉sym->flags |= SYMBOL_DEF_USER;␊ |
| 646 | ␉␉sym_set_changed(sym);␊ |
| 647 | ␉}␊ |
| 648 | ␊ |
| 649 | ␉oldval = sym->def[S_DEF_USER].val;␊ |
| 650 | ␉size = strlen(newval) + 1;␊ |
| 651 | ␉if (sym->type == S_HEX && (newval[0] != '0' || (newval[1] != 'x' && newval[1] != 'X'))) {␊ |
| 652 | ␉␉size += 2;␊ |
| 653 | ␉␉sym->def[S_DEF_USER].val = val = malloc(size);␊ |
| 654 | ␉␉*val++ = '0';␊ |
| 655 | ␉␉*val++ = 'x';␊ |
| 656 | ␉} else if (!oldval || strcmp(oldval, newval))␊ |
| 657 | ␉␉sym->def[S_DEF_USER].val = val = malloc(size);␊ |
| 658 | ␉else␊ |
| 659 | ␉␉return true;␊ |
| 660 | ␊ |
| 661 | ␉strcpy(val, newval);␊ |
| 662 | ␉free((void *)oldval);␊ |
| 663 | ␉sym_clear_all_valid();␊ |
| 664 | ␊ |
| 665 | ␉return true;␊ |
| 666 | }␊ |
| 667 | ␊ |
| 668 | /*␊ |
| 669 | * Find the default value associated to a symbol.␊ |
| 670 | * For tristate symbol handle the modules=n case␊ |
| 671 | * in which case "m" becomes "y".␊ |
| 672 | * If the symbol does not have any default then fallback␊ |
| 673 | * to the fixed default values.␊ |
| 674 | */␊ |
| 675 | const char *sym_get_string_default(struct symbol *sym)␊ |
| 676 | {␊ |
| 677 | ␉struct property *prop;␊ |
| 678 | ␉struct symbol *ds;␊ |
| 679 | ␉const char *str;␊ |
| 680 | ␉tristate val;␊ |
| 681 | ␊ |
| 682 | ␉sym_calc_visibility(sym);␊ |
| 683 | ␉sym_calc_value(modules_sym);␊ |
| 684 | ␉val = symbol_no.curr.tri;␊ |
| 685 | ␉str = symbol_empty.curr.val;␊ |
| 686 | ␊ |
| 687 | ␉/* If symbol has a default value look it up */␊ |
| 688 | ␉prop = sym_get_default_prop(sym);␊ |
| 689 | ␉if (prop != NULL) {␊ |
| 690 | ␉␉switch (sym->type) {␊ |
| 691 | ␉␉case S_BOOLEAN:␊ |
| 692 | ␉␉case S_TRISTATE:␊ |
| 693 | ␉␉␉/* The visibility may limit the value from yes => mod */␊ |
| 694 | ␉␉␉val = EXPR_AND(expr_calc_value(prop->expr), prop->visible.tri);␊ |
| 695 | ␉␉␉break;␊ |
| 696 | ␉␉default:␊ |
| 697 | ␉␉␉/*␊ |
| 698 | ␉␉␉ * The following fails to handle the situation␊ |
| 699 | ␉␉␉ * where a default value is further limited by␊ |
| 700 | ␉␉␉ * the valid range.␊ |
| 701 | ␉␉␉ */␊ |
| 702 | ␉␉␉ds = prop_get_symbol(prop);␊ |
| 703 | ␉␉␉if (ds != NULL) {␊ |
| 704 | ␉␉␉␉sym_calc_value(ds);␊ |
| 705 | ␉␉␉␉str = (const char *)ds->curr.val;␊ |
| 706 | ␉␉␉}␊ |
| 707 | ␉␉}␊ |
| 708 | ␉}␊ |
| 709 | ␊ |
| 710 | ␉/* Handle select statements */␊ |
| 711 | ␉val = EXPR_OR(val, sym->rev_dep.tri);␊ |
| 712 | ␊ |
| 713 | ␉/* transpose mod to yes if modules are not enabled */␊ |
| 714 | ␉if (val == mod)␊ |
| 715 | ␉␉if (!sym_is_choice_value(sym) && modules_sym->curr.tri == no)␊ |
| 716 | ␉␉␉val = yes;␊ |
| 717 | ␊ |
| 718 | ␉/* transpose mod to yes if type is bool */␊ |
| 719 | ␉if (sym->type == S_BOOLEAN && val == mod)␊ |
| 720 | ␉␉val = yes;␊ |
| 721 | ␊ |
| 722 | ␉switch (sym->type) {␊ |
| 723 | ␉case S_BOOLEAN:␊ |
| 724 | ␉case S_TRISTATE:␊ |
| 725 | ␉␉switch (val) {␊ |
| 726 | ␉␉case no: return "n";␊ |
| 727 | ␉␉case mod: return "m";␊ |
| 728 | ␉␉case yes: return "y";␊ |
| 729 | ␉␉}␊ |
| 730 | ␉case S_INT:␊ |
| 731 | ␉case S_HEX:␊ |
| 732 | ␉␉return str;␊ |
| 733 | ␉case S_STRING:␊ |
| 734 | ␉␉return str;␊ |
| 735 | ␉case S_OTHER:␊ |
| 736 | ␉case S_UNKNOWN:␊ |
| 737 | ␉␉break;␊ |
| 738 | ␉}␊ |
| 739 | ␉return "";␊ |
| 740 | }␊ |
| 741 | ␊ |
| 742 | const char *sym_get_string_value(struct symbol *sym)␊ |
| 743 | {␊ |
| 744 | ␉tristate val;␊ |
| 745 | ␊ |
| 746 | ␉switch (sym->type) {␊ |
| 747 | ␉case S_BOOLEAN:␊ |
| 748 | ␉case S_TRISTATE:␊ |
| 749 | ␉␉val = sym_get_tristate_value(sym);␊ |
| 750 | ␉␉switch (val) {␊ |
| 751 | ␉␉case no:␊ |
| 752 | ␉␉␉return "n";␊ |
| 753 | ␉␉case mod:␊ |
| 754 | ␉␉␉return "m";␊ |
| 755 | ␉␉case yes:␊ |
| 756 | ␉␉␉return "y";␊ |
| 757 | ␉␉}␊ |
| 758 | ␉␉break;␊ |
| 759 | ␉default:␊ |
| 760 | ␉␉;␊ |
| 761 | ␉}␊ |
| 762 | ␉return (const char *)sym->curr.val;␊ |
| 763 | }␊ |
| 764 | ␊ |
| 765 | bool sym_is_changable(struct symbol *sym)␊ |
| 766 | {␊ |
| 767 | ␉return sym->visible > sym->rev_dep.tri;␊ |
| 768 | }␊ |
| 769 | ␊ |
| 770 | static unsigned strhash(const char *s)␊ |
| 771 | {␊ |
| 772 | ␉/* fnv32 hash */␊ |
| 773 | ␉unsigned hash = 2166136261U;␊ |
| 774 | ␉for (; *s; s++)␊ |
| 775 | ␉␉hash = (hash ^ *s) * 0x01000193;␊ |
| 776 | ␉return hash;␊ |
| 777 | }␊ |
| 778 | ␊ |
| 779 | struct symbol *sym_lookup(const char *name, int flags)␊ |
| 780 | {␊ |
| 781 | ␉struct symbol *symbol;␊ |
| 782 | ␉char *new_name;␊ |
| 783 | ␉int hash;␊ |
| 784 | ␊ |
| 785 | ␉if (name) {␊ |
| 786 | ␉␉if (name[0] && !name[1]) {␊ |
| 787 | ␉␉␉switch (name[0]) {␊ |
| 788 | ␉␉␉case 'y': return &symbol_yes;␊ |
| 789 | ␉␉␉case 'm': return &symbol_mod;␊ |
| 790 | ␉␉␉case 'n': return &symbol_no;␊ |
| 791 | ␉␉␉}␊ |
| 792 | ␉␉}␊ |
| 793 | ␉␉hash = strhash(name) % SYMBOL_HASHSIZE;␊ |
| 794 | ␊ |
| 795 | ␉␉for (symbol = symbol_hash[hash]; symbol; symbol = symbol->next) {␊ |
| 796 | ␉␉␉if (symbol->name &&␊ |
| 797 | ␉␉␉ !strcmp(symbol->name, name) &&␊ |
| 798 | ␉␉␉ (flags ? symbol->flags & flags␊ |
| 799 | ␉␉␉␉ : !(symbol->flags & (SYMBOL_CONST|SYMBOL_CHOICE))))␊ |
| 800 | ␉␉␉␉return symbol;␊ |
| 801 | ␉␉}␊ |
| 802 | ␉␉new_name = strdup(name);␊ |
| 803 | ␉} else {␊ |
| 804 | ␉␉new_name = NULL;␊ |
| 805 | ␉␉hash = 0;␊ |
| 806 | ␉}␊ |
| 807 | ␊ |
| 808 | ␉symbol = malloc(sizeof(*symbol));␊ |
| 809 | ␉memset(symbol, 0, sizeof(*symbol));␊ |
| 810 | ␉symbol->name = new_name;␊ |
| 811 | ␉symbol->type = S_UNKNOWN;␊ |
| 812 | ␉symbol->flags |= flags;␊ |
| 813 | ␊ |
| 814 | ␉symbol->next = symbol_hash[hash];␊ |
| 815 | ␉symbol_hash[hash] = symbol;␊ |
| 816 | ␊ |
| 817 | ␉return symbol;␊ |
| 818 | }␊ |
| 819 | ␊ |
| 820 | struct symbol *sym_find(const char *name)␊ |
| 821 | {␊ |
| 822 | ␉struct symbol *symbol = NULL;␊ |
| 823 | ␉int hash = 0;␊ |
| 824 | ␊ |
| 825 | ␉if (!name)␊ |
| 826 | ␉␉return NULL;␊ |
| 827 | ␊ |
| 828 | ␉if (name[0] && !name[1]) {␊ |
| 829 | ␉␉switch (name[0]) {␊ |
| 830 | ␉␉case 'y': return &symbol_yes;␊ |
| 831 | ␉␉case 'm': return &symbol_mod;␊ |
| 832 | ␉␉case 'n': return &symbol_no;␊ |
| 833 | ␉␉}␊ |
| 834 | ␉}␊ |
| 835 | ␉hash = strhash(name) % SYMBOL_HASHSIZE;␊ |
| 836 | ␊ |
| 837 | ␉for (symbol = symbol_hash[hash]; symbol; symbol = symbol->next) {␊ |
| 838 | ␉␉if (symbol->name &&␊ |
| 839 | ␉␉ !strcmp(symbol->name, name) &&␊ |
| 840 | ␉␉ !(symbol->flags & SYMBOL_CONST))␊ |
| 841 | ␉␉␉␉break;␊ |
| 842 | ␉}␊ |
| 843 | ␊ |
| 844 | ␉return symbol;␊ |
| 845 | }␊ |
| 846 | ␊ |
| 847 | /*␊ |
| 848 | * Expand symbol's names embedded in the string given in argument. Symbols'␊ |
| 849 | * name to be expanded shall be prefixed by a '$'. Unknown symbol expands to␊ |
| 850 | * the empty string.␊ |
| 851 | */␊ |
| 852 | const char *sym_expand_string_value(const char *in)␊ |
| 853 | {␊ |
| 854 | ␉const char *src;␊ |
| 855 | ␉char *res;␊ |
| 856 | ␉size_t reslen;␊ |
| 857 | ␊ |
| 858 | ␉reslen = strlen(in) + 1;␊ |
| 859 | ␉res = malloc(reslen);␊ |
| 860 | ␉res[0] = '\0';␊ |
| 861 | ␊ |
| 862 | ␉while ((src = strchr(in, '$'))) {␊ |
| 863 | ␉␉char *p, name[SYMBOL_MAXLENGTH];␊ |
| 864 | ␉␉const char *symval = "";␊ |
| 865 | ␉␉struct symbol *sym;␊ |
| 866 | ␉␉size_t newlen;␊ |
| 867 | ␊ |
| 868 | ␉␉strncat(res, in, src - in);␊ |
| 869 | ␉␉src++;␊ |
| 870 | ␊ |
| 871 | ␉␉p = name;␊ |
| 872 | ␉␉while (isalnum(*src) || *src == '_')␊ |
| 873 | ␉␉␉*p++ = *src++;␊ |
| 874 | ␉␉*p = '\0';␊ |
| 875 | ␊ |
| 876 | ␉␉sym = sym_find(name);␊ |
| 877 | ␉␉if (sym != NULL) {␊ |
| 878 | ␉␉␉sym_calc_value(sym);␊ |
| 879 | ␉␉␉symval = sym_get_string_value(sym);␊ |
| 880 | ␉␉}␊ |
| 881 | ␊ |
| 882 | ␉␉newlen = strlen(res) + strlen(symval) + strlen(src) + 1;␊ |
| 883 | ␉␉if (newlen > reslen) {␊ |
| 884 | ␉␉␉reslen = newlen;␊ |
| 885 | ␉␉␉res = realloc(res, reslen);␊ |
| 886 | ␉␉}␊ |
| 887 | ␊ |
| 888 | ␉␉strcat(res, symval);␊ |
| 889 | ␉␉in = src;␊ |
| 890 | ␉}␊ |
| 891 | ␉strcat(res, in);␊ |
| 892 | ␊ |
| 893 | ␉return res;␊ |
| 894 | }␊ |
| 895 | ␊ |
| 896 | struct symbol **sym_re_search(const char *pattern)␊ |
| 897 | {␊ |
| 898 | ␉struct symbol *sym, **sym_arr = NULL;␊ |
| 899 | ␉int i, cnt, size;␊ |
| 900 | ␉regex_t re;␊ |
| 901 | ␊ |
| 902 | ␉cnt = size = 0;␊ |
| 903 | ␉/* Skip if empty */␊ |
| 904 | ␉if (strlen(pattern) == 0)␊ |
| 905 | ␉␉return NULL;␊ |
| 906 | ␉if (regcomp(&re, pattern, REG_EXTENDED|REG_NOSUB|REG_ICASE))␊ |
| 907 | ␉␉return NULL;␊ |
| 908 | ␊ |
| 909 | ␉for_all_symbols(i, sym) {␊ |
| 910 | ␉␉if (sym->flags & SYMBOL_CONST || !sym->name)␊ |
| 911 | ␉␉␉continue;␊ |
| 912 | ␉␉if (regexec(&re, sym->name, 0, NULL, 0))␊ |
| 913 | ␉␉␉continue;␊ |
| 914 | ␉␉if (cnt + 1 >= size) {␊ |
| 915 | ␉␉␉void *tmp = sym_arr;␊ |
| 916 | ␉␉␉size += 16;␊ |
| 917 | ␉␉␉sym_arr = realloc(sym_arr, size * sizeof(struct symbol *));␊ |
| 918 | ␉␉␉if (!sym_arr) {␊ |
| 919 | ␉␉␉␉free(tmp);␊ |
| 920 | ␉␉␉␉return NULL;␊ |
| 921 | ␉␉␉}␊ |
| 922 | ␉␉}␊ |
| 923 | ␉␉sym_calc_value(sym);␊ |
| 924 | ␉␉sym_arr[cnt++] = sym;␊ |
| 925 | ␉}␊ |
| 926 | ␉if (sym_arr)␊ |
| 927 | ␉␉sym_arr[cnt] = NULL;␊ |
| 928 | ␉regfree(&re);␊ |
| 929 | ␊ |
| 930 | ␉return sym_arr;␊ |
| 931 | }␊ |
| 932 | ␊ |
| 933 | /*␊ |
| 934 | * When we check for recursive dependencies we use a stack to save␊ |
| 935 | * current state so we can print out relevant info to user.␊ |
| 936 | * The entries are located on the call stack so no need to free memory.␊ |
| 937 | * Note inser() remove() must always match to properly clear the stack.␊ |
| 938 | */␊ |
| 939 | static struct dep_stack {␊ |
| 940 | ␉struct dep_stack *prev, *next;␊ |
| 941 | ␉struct symbol *sym;␊ |
| 942 | ␉struct property *prop;␊ |
| 943 | ␉struct expr *expr;␊ |
| 944 | } *check_top;␊ |
| 945 | ␊ |
| 946 | static void dep_stack_insert(struct dep_stack *stack, struct symbol *sym)␊ |
| 947 | {␊ |
| 948 | ␉memset(stack, 0, sizeof(*stack));␊ |
| 949 | ␉if (check_top)␊ |
| 950 | ␉␉check_top->next = stack;␊ |
| 951 | ␉stack->prev = check_top;␊ |
| 952 | ␉stack->sym = sym;␊ |
| 953 | ␉check_top = stack;␊ |
| 954 | }␊ |
| 955 | ␊ |
| 956 | static void dep_stack_remove(void)␊ |
| 957 | {␊ |
| 958 | ␉check_top = check_top->prev;␊ |
| 959 | ␉if (check_top)␊ |
| 960 | ␉␉check_top->next = NULL;␊ |
| 961 | }␊ |
| 962 | ␊ |
| 963 | /*␊ |
| 964 | * Called when we have detected a recursive dependency.␊ |
| 965 | * check_top point to the top of the stact so we use␊ |
| 966 | * the ->prev pointer to locate the bottom of the stack.␊ |
| 967 | */␊ |
| 968 | static void sym_check_print_recursive(struct symbol *last_sym)␊ |
| 969 | {␊ |
| 970 | ␉struct dep_stack *stack;␊ |
| 971 | ␉struct symbol *sym, *next_sym;␊ |
| 972 | ␉struct menu *menu = NULL;␊ |
| 973 | ␉struct property *prop;␊ |
| 974 | ␉struct dep_stack cv_stack;␊ |
| 975 | ␊ |
| 976 | ␉if (sym_is_choice_value(last_sym)) {␊ |
| 977 | ␉␉dep_stack_insert(&cv_stack, last_sym);␊ |
| 978 | ␉␉last_sym = prop_get_symbol(sym_get_choice_prop(last_sym));␊ |
| 979 | ␉}␊ |
| 980 | ␊ |
| 981 | ␉for (stack = check_top; stack != NULL; stack = stack->prev)␊ |
| 982 | ␉␉if (stack->sym == last_sym)␊ |
| 983 | ␉␉␉break;␊ |
| 984 | ␉if (!stack) {␊ |
| 985 | ␉␉fprintf(stderr, "unexpected recursive dependency error\n");␊ |
| 986 | ␉␉return;␊ |
| 987 | ␉}␊ |
| 988 | ␊ |
| 989 | ␉for (; stack; stack = stack->next) {␊ |
| 990 | ␉␉sym = stack->sym;␊ |
| 991 | ␉␉next_sym = stack->next ? stack->next->sym : last_sym;␊ |
| 992 | ␉␉prop = stack->prop;␊ |
| 993 | ␉␉if (prop == NULL)␊ |
| 994 | ␉␉␉prop = stack->sym->prop;␊ |
| 995 | ␊ |
| 996 | ␉␉/* for choice values find the menu entry (used below) */␊ |
| 997 | ␉␉if (sym_is_choice(sym) || sym_is_choice_value(sym)) {␊ |
| 998 | ␉␉␉for (prop = sym->prop; prop; prop = prop->next) {␊ |
| 999 | ␉␉␉␉menu = prop->menu;␊ |
| 1000 | ␉␉␉␉if (prop->menu)␊ |
| 1001 | ␉␉␉␉␉break;␊ |
| 1002 | ␉␉␉}␊ |
| 1003 | ␉␉}␊ |
| 1004 | ␉␉if (stack->sym == last_sym)␊ |
| 1005 | ␉␉␉fprintf(stderr, "%s:%d:error: recursive dependency detected!\n",␊ |
| 1006 | ␉␉␉␉prop->file->name, prop->lineno);␊ |
| 1007 | ␉␉if (stack->expr) {␊ |
| 1008 | ␉␉␉fprintf(stderr, "%s:%d:\tsymbol %s %s value contains %s\n",␊ |
| 1009 | ␉␉␉␉prop->file->name, prop->lineno,␊ |
| 1010 | ␉␉␉␉sym->name ? sym->name : "<choice>",␊ |
| 1011 | ␉␉␉␉prop_get_type_name(prop->type),␊ |
| 1012 | ␉␉␉␉next_sym->name ? next_sym->name : "<choice>");␊ |
| 1013 | ␉␉} else if (stack->prop) {␊ |
| 1014 | ␉␉␉fprintf(stderr, "%s:%d:\tsymbol %s depends on %s\n",␊ |
| 1015 | ␉␉␉␉prop->file->name, prop->lineno,␊ |
| 1016 | ␉␉␉␉sym->name ? sym->name : "<choice>",␊ |
| 1017 | ␉␉␉␉next_sym->name ? next_sym->name : "<choice>");␊ |
| 1018 | ␉␉} else if (sym_is_choice(sym)) {␊ |
| 1019 | ␉␉␉fprintf(stderr, "%s:%d:\tchoice %s contains symbol %s\n",␊ |
| 1020 | ␉␉␉␉menu->file->name, menu->lineno,␊ |
| 1021 | ␉␉␉␉sym->name ? sym->name : "<choice>",␊ |
| 1022 | ␉␉␉␉next_sym->name ? next_sym->name : "<choice>");␊ |
| 1023 | ␉␉} else if (sym_is_choice_value(sym)) {␊ |
| 1024 | ␉␉␉fprintf(stderr, "%s:%d:\tsymbol %s is part of choice %s\n",␊ |
| 1025 | ␉␉␉␉menu->file->name, menu->lineno,␊ |
| 1026 | ␉␉␉␉sym->name ? sym->name : "<choice>",␊ |
| 1027 | ␉␉␉␉next_sym->name ? next_sym->name : "<choice>");␊ |
| 1028 | ␉␉} else {␊ |
| 1029 | ␉␉␉fprintf(stderr, "%s:%d:\tsymbol %s is selected by %s\n",␊ |
| 1030 | ␉␉␉␉prop->file->name, prop->lineno,␊ |
| 1031 | ␉␉␉␉sym->name ? sym->name : "<choice>",␊ |
| 1032 | ␉␉␉␉next_sym->name ? next_sym->name : "<choice>");␊ |
| 1033 | ␉␉}␊ |
| 1034 | ␉}␊ |
| 1035 | ␊ |
| 1036 | ␉if (check_top == &cv_stack)␊ |
| 1037 | ␉␉dep_stack_remove();␊ |
| 1038 | }␊ |
| 1039 | ␊ |
| 1040 | static struct symbol *sym_check_expr_deps(struct expr *e)␊ |
| 1041 | {␊ |
| 1042 | ␉struct symbol *sym;␊ |
| 1043 | ␊ |
| 1044 | ␉if (!e)␊ |
| 1045 | ␉␉return NULL;␊ |
| 1046 | ␉switch (e->type) {␊ |
| 1047 | ␉case E_OR:␊ |
| 1048 | ␉case E_AND:␊ |
| 1049 | ␉␉sym = sym_check_expr_deps(e->left.expr);␊ |
| 1050 | ␉␉if (sym)␊ |
| 1051 | ␉␉␉return sym;␊ |
| 1052 | ␉␉return sym_check_expr_deps(e->right.expr);␊ |
| 1053 | ␉case E_NOT:␊ |
| 1054 | ␉␉return sym_check_expr_deps(e->left.expr);␊ |
| 1055 | ␉case E_EQUAL:␊ |
| 1056 | ␉case E_UNEQUAL:␊ |
| 1057 | ␉␉sym = sym_check_deps(e->left.sym);␊ |
| 1058 | ␉␉if (sym)␊ |
| 1059 | ␉␉␉return sym;␊ |
| 1060 | ␉␉return sym_check_deps(e->right.sym);␊ |
| 1061 | ␉case E_SYMBOL:␊ |
| 1062 | ␉␉return sym_check_deps(e->left.sym);␊ |
| 1063 | ␉default:␊ |
| 1064 | ␉␉break;␊ |
| 1065 | ␉}␊ |
| 1066 | ␉printf("Oops! How to check %d?\n", e->type);␊ |
| 1067 | ␉return NULL;␊ |
| 1068 | }␊ |
| 1069 | ␊ |
| 1070 | /* return NULL when dependencies are OK */␊ |
| 1071 | static struct symbol *sym_check_sym_deps(struct symbol *sym)␊ |
| 1072 | {␊ |
| 1073 | ␉struct symbol *sym2;␊ |
| 1074 | ␉struct property *prop;␊ |
| 1075 | ␉struct dep_stack stack;␊ |
| 1076 | ␊ |
| 1077 | ␉dep_stack_insert(&stack, sym);␊ |
| 1078 | ␊ |
| 1079 | ␉sym2 = sym_check_expr_deps(sym->rev_dep.expr);␊ |
| 1080 | ␉if (sym2)␊ |
| 1081 | ␉␉goto out;␊ |
| 1082 | ␊ |
| 1083 | ␉for (prop = sym->prop; prop; prop = prop->next) {␊ |
| 1084 | ␉␉if (prop->type == P_CHOICE || prop->type == P_SELECT)␊ |
| 1085 | ␉␉␉continue;␊ |
| 1086 | ␉␉stack.prop = prop;␊ |
| 1087 | ␉␉sym2 = sym_check_expr_deps(prop->visible.expr);␊ |
| 1088 | ␉␉if (sym2)␊ |
| 1089 | ␉␉␉break;␊ |
| 1090 | ␉␉if (prop->type != P_DEFAULT || sym_is_choice(sym))␊ |
| 1091 | ␉␉␉continue;␊ |
| 1092 | ␉␉stack.expr = prop->expr;␊ |
| 1093 | ␉␉sym2 = sym_check_expr_deps(prop->expr);␊ |
| 1094 | ␉␉if (sym2)␊ |
| 1095 | ␉␉␉break;␊ |
| 1096 | ␉␉stack.expr = NULL;␊ |
| 1097 | ␉}␊ |
| 1098 | ␊ |
| 1099 | out:␊ |
| 1100 | ␉dep_stack_remove();␊ |
| 1101 | ␊ |
| 1102 | ␉return sym2;␊ |
| 1103 | }␊ |
| 1104 | ␊ |
| 1105 | static struct symbol *sym_check_choice_deps(struct symbol *choice)␊ |
| 1106 | {␊ |
| 1107 | ␉struct symbol *sym, *sym2;␊ |
| 1108 | ␉struct property *prop;␊ |
| 1109 | ␉struct expr *e;␊ |
| 1110 | ␉struct dep_stack stack;␊ |
| 1111 | ␊ |
| 1112 | ␉dep_stack_insert(&stack, choice);␊ |
| 1113 | ␊ |
| 1114 | ␉prop = sym_get_choice_prop(choice);␊ |
| 1115 | ␉expr_list_for_each_sym(prop->expr, e, sym)␊ |
| 1116 | ␉␉sym->flags |= (SYMBOL_CHECK | SYMBOL_CHECKED);␊ |
| 1117 | ␊ |
| 1118 | ␉choice->flags |= (SYMBOL_CHECK | SYMBOL_CHECKED);␊ |
| 1119 | ␉sym2 = sym_check_sym_deps(choice);␊ |
| 1120 | ␉choice->flags &= ~SYMBOL_CHECK;␊ |
| 1121 | ␉if (sym2)␊ |
| 1122 | ␉␉goto out;␊ |
| 1123 | ␊ |
| 1124 | ␉expr_list_for_each_sym(prop->expr, e, sym) {␊ |
| 1125 | ␉␉sym2 = sym_check_sym_deps(sym);␊ |
| 1126 | ␉␉if (sym2)␊ |
| 1127 | ␉␉␉break;␊ |
| 1128 | ␉}␊ |
| 1129 | out:␊ |
| 1130 | ␉expr_list_for_each_sym(prop->expr, e, sym)␊ |
| 1131 | ␉␉sym->flags &= ~SYMBOL_CHECK;␊ |
| 1132 | ␊ |
| 1133 | ␉if (sym2 && sym_is_choice_value(sym2) &&␊ |
| 1134 | ␉ prop_get_symbol(sym_get_choice_prop(sym2)) == choice)␊ |
| 1135 | ␉␉sym2 = choice;␊ |
| 1136 | ␊ |
| 1137 | ␉dep_stack_remove();␊ |
| 1138 | ␊ |
| 1139 | ␉return sym2;␊ |
| 1140 | }␊ |
| 1141 | ␊ |
| 1142 | struct symbol *sym_check_deps(struct symbol *sym)␊ |
| 1143 | {␊ |
| 1144 | ␉struct symbol *sym2;␊ |
| 1145 | ␉struct property *prop;␊ |
| 1146 | ␊ |
| 1147 | ␉if (sym->flags & SYMBOL_CHECK) {␊ |
| 1148 | ␉␉sym_check_print_recursive(sym);␊ |
| 1149 | ␉␉return sym;␊ |
| 1150 | ␉}␊ |
| 1151 | ␉if (sym->flags & SYMBOL_CHECKED)␊ |
| 1152 | ␉␉return NULL;␊ |
| 1153 | ␊ |
| 1154 | ␉if (sym_is_choice_value(sym)) {␊ |
| 1155 | ␉␉struct dep_stack stack;␊ |
| 1156 | ␊ |
| 1157 | ␉␉/* for choice groups start the check with main choice symbol */␊ |
| 1158 | ␉␉dep_stack_insert(&stack, sym);␊ |
| 1159 | ␉␉prop = sym_get_choice_prop(sym);␊ |
| 1160 | ␉␉sym2 = sym_check_deps(prop_get_symbol(prop));␊ |
| 1161 | ␉␉dep_stack_remove();␊ |
| 1162 | ␉} else if (sym_is_choice(sym)) {␊ |
| 1163 | ␉␉sym2 = sym_check_choice_deps(sym);␊ |
| 1164 | ␉} else {␊ |
| 1165 | ␉␉sym->flags |= (SYMBOL_CHECK | SYMBOL_CHECKED);␊ |
| 1166 | ␉␉sym2 = sym_check_sym_deps(sym);␊ |
| 1167 | ␉␉sym->flags &= ~SYMBOL_CHECK;␊ |
| 1168 | ␉}␊ |
| 1169 | ␊ |
| 1170 | ␉if (sym2 && sym2 == sym)␊ |
| 1171 | ␉␉sym2 = NULL;␊ |
| 1172 | ␊ |
| 1173 | ␉return sym2;␊ |
| 1174 | }␊ |
| 1175 | ␊ |
| 1176 | struct property *prop_alloc(enum prop_type type, struct symbol *sym)␊ |
| 1177 | {␊ |
| 1178 | ␉struct property *prop;␊ |
| 1179 | ␉struct property **propp;␊ |
| 1180 | ␊ |
| 1181 | ␉prop = malloc(sizeof(*prop));␊ |
| 1182 | ␉memset(prop, 0, sizeof(*prop));␊ |
| 1183 | ␉prop->type = type;␊ |
| 1184 | ␉prop->sym = sym;␊ |
| 1185 | ␉prop->file = current_file;␊ |
| 1186 | ␉prop->lineno = zconf_lineno();␊ |
| 1187 | ␊ |
| 1188 | ␉/* append property to the prop list of symbol */␊ |
| 1189 | ␉if (sym) {␊ |
| 1190 | ␉␉for (propp = &sym->prop; *propp; propp = &(*propp)->next)␊ |
| 1191 | ␉␉␉;␊ |
| 1192 | ␉␉*propp = prop;␊ |
| 1193 | ␉}␊ |
| 1194 | ␊ |
| 1195 | ␉return prop;␊ |
| 1196 | }␊ |
| 1197 | ␊ |
| 1198 | struct symbol *prop_get_symbol(struct property *prop)␊ |
| 1199 | {␊ |
| 1200 | ␉if (prop->expr && (prop->expr->type == E_SYMBOL ||␊ |
| 1201 | ␉␉␉ prop->expr->type == E_LIST))␊ |
| 1202 | ␉␉return prop->expr->left.sym;␊ |
| 1203 | ␉return NULL;␊ |
| 1204 | }␊ |
| 1205 | ␊ |
| 1206 | const char *prop_get_type_name(enum prop_type type)␊ |
| 1207 | {␊ |
| 1208 | ␉switch (type) {␊ |
| 1209 | ␉case P_PROMPT:␊ |
| 1210 | ␉␉return "prompt";␊ |
| 1211 | ␉case P_ENV:␊ |
| 1212 | ␉␉return "env";␊ |
| 1213 | ␉case P_COMMENT:␊ |
| 1214 | ␉␉return "comment";␊ |
| 1215 | ␉case P_MENU:␊ |
| 1216 | ␉␉return "menu";␊ |
| 1217 | ␉case P_DEFAULT:␊ |
| 1218 | ␉␉return "default";␊ |
| 1219 | ␉case P_CHOICE:␊ |
| 1220 | ␉␉return "choice";␊ |
| 1221 | ␉case P_SELECT:␊ |
| 1222 | ␉␉return "select";␊ |
| 1223 | ␉case P_RANGE:␊ |
| 1224 | ␉␉return "range";␊ |
| 1225 | ␉case P_SYMBOL:␊ |
| 1226 | ␉␉return "symbol";␊ |
| 1227 | ␉case P_UNKNOWN:␊ |
| 1228 | ␉␉break;␊ |
| 1229 | ␉}␊ |
| 1230 | ␉return "unknown";␊ |
| 1231 | }␊ |
| 1232 | |
