scripts/config/menu.c

   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 <stdlib.h>
   7 #include <string.h>
   8
   9 #define LKC_DIRECT_LINK
  10 #include "lkc.h"
  11
  12 struct menu rootmenu;
  13 static struct menu **last_entry_ptr;
  14
  15 struct file *file_list;
  16 struct file *current_file;
  17
  18 static void menu_warn(struct menu *menu, const char *fmt, ...)
  19 {
  20         va_list ap;
  21         va_start(ap, fmt);
  22         fprintf(stderr, "%s:%d:warning: ", menu->file->name, menu->lineno);
  23         vfprintf(stderr, fmt, ap);
  24         fprintf(stderr, "\n");
  25         va_end(ap);
  26 }
  27
  28 static void prop_warn(struct property *prop, const char *fmt, ...)
  29 {
  30         va_list ap;
  31         va_start(ap, fmt);
  32         fprintf(stderr, "%s:%d:warning: ", prop->file->name, prop->lineno);
  33         vfprintf(stderr, fmt, ap);
  34         fprintf(stderr, "\n");
  35         va_end(ap);
  36 }
  37
  38 void menu_init(void)
  39 {
  40         current_entry = current_menu = &rootmenu;
  41         last_entry_ptr = &rootmenu.list;
  42 }
  43
  44 void menu_add_entry(struct symbol *sym)
  45 {
  46         struct menu *menu;
  47
  48         menu = malloc(sizeof(*menu));
  49         memset(menu, 0, sizeof(*menu));
  50         menu->sym = sym;
  51         menu->parent = current_menu;
  52         menu->file = current_file;
  53         menu->lineno = zconf_lineno();
  54
  55         *last_entry_ptr = menu;
  56         last_entry_ptr = &menu->next;
  57         current_entry = menu;
  58 }
  59
  60 void menu_end_entry(void)
  61 {
  62 }
  63
  64 struct menu *menu_add_menu(void)
  65 {
  66         menu_end_entry();
  67         last_entry_ptr = &current_entry->list;
  68         return current_menu = current_entry;
  69 }
  70
  71 void menu_end_menu(void)
  72 {
  73         last_entry_ptr = &current_menu->next;
  74         current_menu = current_menu->parent;
  75 }
  76
  77 void menu_add_dep(struct expr *dep)
  78 {
  79         current_entry->dep = expr_alloc_and(current_entry->dep, dep);
  80 }
  81
  82 void menu_set_type(int type)
  83 {
  84         struct symbol *sym = current_entry->sym;
  85
  86         if (sym->type == type)
  87                 return;
  88         if (sym->type == S_UNKNOWN) {
  89                 sym->type = type;
  90                 return;
  91         }
  92         menu_warn(current_entry, "type of '%s' redefined from '%s' to '%s'\n",
  93             sym->name ? sym->name : "<choice>",
  94             sym_type_name(sym->type), sym_type_name(type));
  95 }
  96
  97 struct property *menu_add_prop(enum prop_type type, char *prompt, struct expr *expr, struct expr *dep)
  98 {
  99         struct property *prop = prop_alloc(type, current_entry->sym);
 100
 101         prop->menu = current_entry;
 102         prop->text = prompt;
 103         prop->expr = expr;
 104         prop->visible.expr = dep;
 105
 106         if (prompt) {
 107                 if (current_entry->prompt)
 108                         menu_warn(current_entry, "prompt redefined\n");
 109                 current_entry->prompt = prop;
 110         }
 111
 112         return prop;
 113 }
 114
 115 struct property *menu_add_prompt(enum prop_type type, char *prompt, struct expr *dep)
 116 {
 117         return menu_add_prop(type, prompt, NULL, dep);
 118 }
 119
 120 void menu_add_expr(enum prop_type type, struct expr *expr, struct expr *dep)
 121 {
 122         menu_add_prop(type, NULL, expr, dep);
 123 }
 124
 125 void menu_add_symbol(enum prop_type type, struct symbol *sym, struct expr *dep)
 126 {
 127         menu_add_prop(type, NULL, expr_alloc_symbol(sym), dep);
 128 }
 129
 130 static int menu_range_valid_sym(struct symbol *sym, struct symbol *sym2)
 131 {
 132         return sym2->type == S_INT || sym2->type == S_HEX ||
 133                (sym2->type == S_UNKNOWN && sym_string_valid(sym, sym2->name));
 134 }
 135
 136 void sym_check_prop(struct symbol *sym)
 137 {
 138         struct property *prop;
 139         struct symbol *sym2;
 140         for (prop = sym->prop; prop; prop = prop->next) {
 141                 switch (prop->type) {
 142                 case P_DEFAULT:
 143                         if ((sym->type == S_STRING || sym->type == S_INT || sym->type == S_HEX) &&
 144                             prop->expr->type != E_SYMBOL)
 145                                 prop_warn(prop,
 146                                     "default for config symbol '%'"
 147                                     " must be a single symbol", sym->name);
 148                         break;
 149                 case P_SELECT:
 150                         sym2 = prop_get_symbol(prop);
 151                         if (sym->type != S_BOOLEAN && sym->type != S_TRISTATE)
 152                                 prop_warn(prop,
 153                                     "config symbol '%s' uses select, but is "
 154                                     "not boolean or tristate", sym->name);
 155                         else if (sym2->type == S_UNKNOWN)
 156                                 prop_warn(prop,
 157                                     "'select' used by config symbol '%s' "
 158                                     "refer to undefined symbol '%s'",
 159                                     sym->name, sym2->name);
 160                         else if (sym2->type != S_BOOLEAN && sym2->type != S_TRISTATE)
 161                                 prop_warn(prop,
 162                                     "'%s' has wrong type. 'select' only "
 163                                     "accept arguments of boolean and "
 164                                     "tristate type", sym2->name);
 165                         break;
 166                 case P_DESELECT:
 167                         sym2 = prop_get_symbol(prop);
 168                         if (sym->type != S_BOOLEAN && sym->type != S_TRISTATE)
 169                                 prop_warn(prop,
 170                                     "config symbol '%s' uses deselect, but is "
 171                                     "not boolean or tristate", sym->name);
 172                         else if (sym2->type == S_UNKNOWN)
 173                                 prop_warn(prop,
 174                                     "'deselect' used by config symbol '%s' "
 175                                     "refer to undefined symbol '%s'",
 176                                     sym->name, sym2->name);
 177                         else if (sym2->type != S_BOOLEAN && sym2->type != S_TRISTATE)
 178                                 prop_warn(prop,
 179                                     "'%s' has wrong type. 'deselect' only "
 180                                     "accept arguments of boolean and "
 181                                     "tristate type", sym2->name);
 182                         break;
 183                 case P_RANGE:
 184                         if (sym->type != S_INT && sym->type != S_HEX)
 185                                 prop_warn(prop, "range is only allowed "
 186                                                 "for int or hex symbols");
 187                         if (!menu_range_valid_sym(sym, prop->expr->left.sym) ||
 188                             !menu_range_valid_sym(sym, prop->expr->right.sym))
 189                                 prop_warn(prop, "range is invalid");
 190                         break;
 191                 default:
 192                         ;
 193                 }
 194         }
 195 }
 196
 197 void menu_finalize(struct menu *parent)
 198 {
 199         struct menu *menu, *last_menu;
 200         struct symbol *sym;
 201         struct property *prop;
 202         struct expr *parentdep, *basedep, *dep, *dep2, **ep;
 203
 204         sym = parent->sym;
 205         if (parent->list) {
 206                 if (sym && sym_is_choice(sym)) {
 207                         /* find the first choice value and find out choice type */
 208                         for (menu = parent->list; menu; menu = menu->next) {
 209                                 if (menu->sym) {
 210                                         current_entry = parent;
 211                                         menu_set_type(menu->sym->type);
 212                                         current_entry = menu;
 213                                         menu_set_type(sym->type);
 214                                         break;
 215                                 }
 216                         }
 217                         parentdep = expr_alloc_symbol(sym);
 218                 } else if (parent->prompt)
 219                         parentdep = parent->prompt->visible.expr;
 220                 else
 221                         parentdep = parent->dep;
 222
 223                 for (menu = parent->list; menu; menu = menu->next) {
 224                         basedep = expr_transform(menu->dep);
 225                         basedep = expr_alloc_and(expr_copy(parentdep), basedep);
 226                         basedep = expr_eliminate_dups(basedep);
 227                         menu->dep = basedep;
 228                         if (menu->sym)
 229                                 prop = menu->sym->prop;
 230                         else
 231                                 prop = menu->prompt;
 232
 233                         for (; prop; prop = prop->next) {
 234                                 if (prop->menu != menu)
 235                                         continue;
 236                                 dep = expr_transform(prop->visible.expr);
 237                                 dep = expr_alloc_and(expr_copy(menu->dep), dep);
 238                                 dep = expr_eliminate_dups(dep);
 239                                 if (menu->sym && menu->sym->type != S_TRISTATE)
 240                                         dep = expr_trans_bool(dep);
 241                                 prop->visible.expr = dep;
 242                                 if (prop->type == P_SELECT) {
 243                                         struct symbol *es = prop_get_symbol(prop);
 244                                         es->rev_dep.expr = expr_alloc_or(es->rev_dep.expr,
 245                                                         expr_alloc_and(expr_alloc_symbol(menu->sym), expr_copy(dep)));
 246                                 }
 247                                 if (prop->type == P_DESELECT) {
 248                                         struct symbol *es = prop_get_symbol(prop);
 249                                         es->rev_dep_inv.expr = expr_alloc_or(es->rev_dep_inv.expr,
 250                                                         expr_alloc_and(expr_alloc_symbol(menu->sym), expr_copy(dep)));
 251                                 }
 252                         }
 253                 }
 254                 for (menu = parent->list; menu; menu = menu->next)
 255                         menu_finalize(menu);
 256         } else if (sym) {
 257                 basedep = parent->prompt ? parent->prompt->visible.expr : NULL;
 258                 basedep = expr_trans_compare(basedep, E_UNEQUAL, &symbol_no);
 259                 basedep = expr_eliminate_dups(expr_transform(basedep));
 260                 last_menu = NULL;
 261                 for (menu = parent->next; menu; menu = menu->next) {
 262                         dep = menu->prompt ? menu->prompt->visible.expr : menu->dep;
 263                         if (!expr_contains_symbol(dep, sym))
 264                                 break;
 265                         if (expr_depends_symbol(dep, sym))
 266                                 goto next;
 267                         dep = expr_trans_compare(dep, E_UNEQUAL, &symbol_no);
 268                         dep = expr_eliminate_dups(expr_transform(dep));
 269                         dep2 = expr_copy(basedep);
 270                         expr_eliminate_eq(&dep, &dep2);
 271                         expr_free(dep);
 272                         if (!expr_is_yes(dep2)) {
 273                                 expr_free(dep2);
 274                                 break;
 275                         }
 276                         expr_free(dep2);
 277                 next:
 278                         menu_finalize(menu);
 279                         menu->parent = parent;
 280                         last_menu = menu;
 281                 }
 282                 if (last_menu) {
 283                         parent->list = parent->next;
 284                         parent->next = last_menu->next;
 285                         last_menu->next = NULL;
 286                 }
 287         }
 288         for (menu = parent->list; menu; menu = menu->next) {
 289                 if (sym && sym_is_choice(sym) && menu->sym) {
 290                         menu->sym->flags |= SYMBOL_CHOICEVAL;
 291                         if (!menu->prompt)
 292                                 menu_warn(menu, "choice value must have a prompt");
 293                         for (prop = menu->sym->prop; prop; prop = prop->next) {
 294                                 if (prop->type == P_PROMPT && prop->menu != menu) {
 295                                         prop_warn(prop, "choice values "
 296                                             "currently only support a "
 297                                             "single prompt");
 298                                 }
 299                                 if (prop->type == P_DEFAULT)
 300                                         prop_warn(prop, "defaults for choice "
 301                                             "values not supported");
 302                         }
 303                         current_entry = menu;
 304                         menu_set_type(sym->type);
 305                         menu_add_symbol(P_CHOICE, sym, NULL);
 306                         prop = sym_get_choice_prop(sym);
 307                         for (ep = &prop->expr; *ep; ep = &(*ep)->left.expr)
 308                                 ;
 309                         *ep = expr_alloc_one(E_CHOICE, NULL);
 310                         (*ep)->right.sym = menu->sym;
 311                 }
 312                 if (menu->list && (!menu->prompt || !menu->prompt->text)) {
 313                         for (last_menu = menu->list; ; last_menu = last_menu->next) {
 314                                 last_menu->parent = parent;
 315                                 if (!last_menu->next)
 316                                         break;
 317                         }
 318                         last_menu->next = menu->next;
 319                         menu->next = menu->list;
 320                         menu->list = NULL;
 321                 }
 322         }
 323
 324         if (sym && !(sym->flags & SYMBOL_WARNED)) {
 325                 if (sym->type == S_UNKNOWN)
 326                         menu_warn(parent, "config symbol defined "
 327                             "without type\n");
 328
 329                 if (sym_is_choice(sym) && !parent->prompt)
 330                         menu_warn(parent, "choice must have a prompt\n");
 331
 332                 /* Check properties connected to this symbol */
 333                 sym_check_prop(sym);
 334                 sym->flags |= SYMBOL_WARNED;
 335         }
 336
 337         if (sym && !sym_is_optional(sym) && parent->prompt) {
 338                 sym->rev_dep.expr = expr_alloc_or(sym->rev_dep.expr,
 339                                 expr_alloc_and(parent->prompt->visible.expr,
 340                                         expr_alloc_symbol(&symbol_mod)));
 341         }
 342 }
 343
 344 bool menu_is_visible(struct menu *menu)
 345 {
 346         struct menu *child;
 347         struct symbol *sym;
 348         tristate visible;
 349
 350         if (!menu->prompt)
 351                 return false;
 352         sym = menu->sym;
 353         if (sym) {
 354                 sym_calc_value(sym);
 355                 visible = menu->prompt->visible.tri;
 356         } else
 357                 visible = menu->prompt->visible.tri = expr_calc_value(menu->prompt->visible.expr);
 358
 359         if (visible != no)
 360                 return true;
 361         if (!sym || sym_get_tristate_value(menu->sym) == no)
 362                 return false;
 363
 364         for (child = menu->list; child; child = child->next)
 365                 if (menu_is_visible(child))
 366                         return true;
 367         return false;
 368 }
 369
 370 const char *menu_get_prompt(struct menu *menu)
 371 {
 372         if (menu->prompt)
 373                 return _(menu->prompt->text);
 374         else if (menu->sym)
 375                 return _(menu->sym->name);
 376         return NULL;
 377 }
 378
 379 struct menu *menu_get_root_menu(struct menu *menu)
 380 {
 381         return &rootmenu;
 382 }
 383
 384 struct menu *menu_get_parent_menu(struct menu *menu)
 385 {
 386         enum prop_type type;
 387
 388         for (; menu != &rootmenu; menu = menu->parent) {
 389                 type = menu->prompt ? menu->prompt->type : 0;
 390                 if (type == P_MENU)
 391                         break;
 392         }
 393         return menu;
 394 }
 395