kconfig/menu.c
author "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
Tue Oct 14 20:06:37 2008 +0000 (2008-10-14)
changeset 934 e2f4be0feb9d
child 943 1cca90ce0481
permissions -rw-r--r--
Correctly auto-complete with start-steps as well.

/trunk/ct-ng.comp | 2 1 1 0 +-
1 file changed, 1 insertion(+), 1 deletion(-)
     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 struct expr *menu_check_dep(struct expr *e)
    78 {
    79 	if (!e)
    80 		return e;
    81 
    82 	switch (e->type) {
    83 	case E_NOT:
    84 		e->left.expr = menu_check_dep(e->left.expr);
    85 		break;
    86 	case E_OR:
    87 	case E_AND:
    88 		e->left.expr = menu_check_dep(e->left.expr);
    89 		e->right.expr = menu_check_dep(e->right.expr);
    90 		break;
    91 	case E_SYMBOL:
    92 		/* change 'm' into 'm' && MODULES */
    93 		if (e->left.sym == &symbol_mod)
    94 			return expr_alloc_and(e, expr_alloc_symbol(modules_sym));
    95 		break;
    96 	default:
    97 		break;
    98 	}
    99 	return e;
   100 }
   101 
   102 void menu_add_dep(struct expr *dep)
   103 {
   104 	current_entry->dep = expr_alloc_and(current_entry->dep, menu_check_dep(dep));
   105 }
   106 
   107 void menu_set_type(int type)
   108 {
   109 	struct symbol *sym = current_entry->sym;
   110 
   111 	if (sym->type == type)
   112 		return;
   113 	if (sym->type == S_UNKNOWN) {
   114 		sym->type = type;
   115 		return;
   116 	}
   117 	menu_warn(current_entry, "type of '%s' redefined from '%s' to '%s'",
   118 	    sym->name ? sym->name : "<choice>",
   119 	    sym_type_name(sym->type), sym_type_name(type));
   120 }
   121 
   122 struct property *menu_add_prop(enum prop_type type, char *prompt, struct expr *expr, struct expr *dep)
   123 {
   124 	struct property *prop = prop_alloc(type, current_entry->sym);
   125 
   126 	prop->menu = current_entry;
   127 	prop->expr = expr;
   128 	prop->visible.expr = menu_check_dep(dep);
   129 
   130 	if (prompt) {
   131 		if (isspace(*prompt)) {
   132 			prop_warn(prop, "leading whitespace ignored");
   133 			while (isspace(*prompt))
   134 				prompt++;
   135 		}
   136 		if (current_entry->prompt)
   137 			prop_warn(prop, "prompt redefined");
   138 		current_entry->prompt = prop;
   139 	}
   140 	prop->text = prompt;
   141 
   142 	return prop;
   143 }
   144 
   145 struct property *menu_add_prompt(enum prop_type type, char *prompt, struct expr *dep)
   146 {
   147 	return menu_add_prop(type, prompt, NULL, dep);
   148 }
   149 
   150 void menu_add_expr(enum prop_type type, struct expr *expr, struct expr *dep)
   151 {
   152 	menu_add_prop(type, NULL, expr, dep);
   153 }
   154 
   155 void menu_add_symbol(enum prop_type type, struct symbol *sym, struct expr *dep)
   156 {
   157 	menu_add_prop(type, NULL, expr_alloc_symbol(sym), dep);
   158 }
   159 
   160 void menu_add_option(int token, char *arg)
   161 {
   162 	struct property *prop;
   163 
   164 	switch (token) {
   165 	case T_OPT_MODULES:
   166 		prop = prop_alloc(P_DEFAULT, modules_sym);
   167 		prop->expr = expr_alloc_symbol(current_entry->sym);
   168 		break;
   169 	case T_OPT_DEFCONFIG_LIST:
   170 		if (!sym_defconfig_list)
   171 			sym_defconfig_list = current_entry->sym;
   172 		else if (sym_defconfig_list != current_entry->sym)
   173 			zconf_error("trying to redefine defconfig symbol");
   174 		break;
   175 	}
   176 }
   177 
   178 static int menu_range_valid_sym(struct symbol *sym, struct symbol *sym2)
   179 {
   180 	return sym2->type == S_INT || sym2->type == S_HEX ||
   181 	       (sym2->type == S_UNKNOWN && sym_string_valid(sym, sym2->name));
   182 }
   183 
   184 void sym_check_prop(struct symbol *sym)
   185 {
   186 	struct property *prop;
   187 	struct symbol *sym2;
   188 	for (prop = sym->prop; prop; prop = prop->next) {
   189 		switch (prop->type) {
   190 		case P_DEFAULT:
   191 			if ((sym->type == S_STRING || sym->type == S_INT || sym->type == S_HEX) &&
   192 			    prop->expr->type != E_SYMBOL)
   193 				prop_warn(prop,
   194 				    "default for config symbol '%'"
   195 				    " must be a single symbol", sym->name);
   196 			break;
   197 		case P_SELECT:
   198 			sym2 = prop_get_symbol(prop);
   199 			if (sym->type != S_BOOLEAN && sym->type != S_TRISTATE)
   200 				prop_warn(prop,
   201 				    "config symbol '%s' uses select, but is "
   202 				    "not boolean or tristate", sym->name);
   203 			else if (sym2->type == S_UNKNOWN)
   204 				prop_warn(prop,
   205 				    "'select' used by config symbol '%s' "
   206 				    "refer to undefined symbol '%s'",
   207 				    sym->name, sym2->name);
   208 			else if (sym2->type != S_BOOLEAN && sym2->type != S_TRISTATE)
   209 				prop_warn(prop,
   210 				    "'%s' has wrong type. 'select' only "
   211 				    "accept arguments of boolean and "
   212 				    "tristate type", sym2->name);
   213 			break;
   214 		case P_RANGE:
   215 			if (sym->type != S_INT && sym->type != S_HEX)
   216 				prop_warn(prop, "range is only allowed "
   217 				                "for int or hex symbols");
   218 			if (!menu_range_valid_sym(sym, prop->expr->left.sym) ||
   219 			    !menu_range_valid_sym(sym, prop->expr->right.sym))
   220 				prop_warn(prop, "range is invalid");
   221 			break;
   222 		default:
   223 			;
   224 		}
   225 	}
   226 }
   227 
   228 void menu_finalize(struct menu *parent)
   229 {
   230 	struct menu *menu, *last_menu;
   231 	struct symbol *sym;
   232 	struct property *prop;
   233 	struct expr *parentdep, *basedep, *dep, *dep2, **ep;
   234 
   235 	sym = parent->sym;
   236 	if (parent->list) {
   237 		if (sym && sym_is_choice(sym)) {
   238 			/* find the first choice value and find out choice type */
   239 			for (menu = parent->list; menu; menu = menu->next) {
   240 				if (menu->sym) {
   241 					current_entry = parent;
   242 					menu_set_type(menu->sym->type);
   243 					current_entry = menu;
   244 					menu_set_type(sym->type);
   245 					break;
   246 				}
   247 			}
   248 			parentdep = expr_alloc_symbol(sym);
   249 		} else if (parent->prompt)
   250 			parentdep = parent->prompt->visible.expr;
   251 		else
   252 			parentdep = parent->dep;
   253 
   254 		for (menu = parent->list; menu; menu = menu->next) {
   255 			basedep = expr_transform(menu->dep);
   256 			basedep = expr_alloc_and(expr_copy(parentdep), basedep);
   257 			basedep = expr_eliminate_dups(basedep);
   258 			menu->dep = basedep;
   259 			if (menu->sym)
   260 				prop = menu->sym->prop;
   261 			else
   262 				prop = menu->prompt;
   263 			for (; prop; prop = prop->next) {
   264 				if (prop->menu != menu)
   265 					continue;
   266 				dep = expr_transform(prop->visible.expr);
   267 				dep = expr_alloc_and(expr_copy(basedep), dep);
   268 				dep = expr_eliminate_dups(dep);
   269 				if (menu->sym && menu->sym->type != S_TRISTATE)
   270 					dep = expr_trans_bool(dep);
   271 				prop->visible.expr = dep;
   272 				if (prop->type == P_SELECT) {
   273 					struct symbol *es = prop_get_symbol(prop);
   274 					es->rev_dep.expr = expr_alloc_or(es->rev_dep.expr,
   275 							expr_alloc_and(expr_alloc_symbol(menu->sym), expr_copy(dep)));
   276 				}
   277 			}
   278 		}
   279 		for (menu = parent->list; menu; menu = menu->next)
   280 			menu_finalize(menu);
   281 	} else if (sym) {
   282 		basedep = parent->prompt ? parent->prompt->visible.expr : NULL;
   283 		basedep = expr_trans_compare(basedep, E_UNEQUAL, &symbol_no);
   284 		basedep = expr_eliminate_dups(expr_transform(basedep));
   285 		last_menu = NULL;
   286 		for (menu = parent->next; menu; menu = menu->next) {
   287 			dep = menu->prompt ? menu->prompt->visible.expr : menu->dep;
   288 			if (!expr_contains_symbol(dep, sym))
   289 				break;
   290 			if (expr_depends_symbol(dep, sym))
   291 				goto next;
   292 			dep = expr_trans_compare(dep, E_UNEQUAL, &symbol_no);
   293 			dep = expr_eliminate_dups(expr_transform(dep));
   294 			dep2 = expr_copy(basedep);
   295 			expr_eliminate_eq(&dep, &dep2);
   296 			expr_free(dep);
   297 			if (!expr_is_yes(dep2)) {
   298 				expr_free(dep2);
   299 				break;
   300 			}
   301 			expr_free(dep2);
   302 		next:
   303 			menu_finalize(menu);
   304 			menu->parent = parent;
   305 			last_menu = menu;
   306 		}
   307 		if (last_menu) {
   308 			parent->list = parent->next;
   309 			parent->next = last_menu->next;
   310 			last_menu->next = NULL;
   311 		}
   312 	}
   313 	for (menu = parent->list; menu; menu = menu->next) {
   314 		if (sym && sym_is_choice(sym) && menu->sym) {
   315 			menu->sym->flags |= SYMBOL_CHOICEVAL;
   316 			if (!menu->prompt)
   317 				menu_warn(menu, "choice value must have a prompt");
   318 			for (prop = menu->sym->prop; prop; prop = prop->next) {
   319 				if (prop->type == P_PROMPT && prop->menu != menu) {
   320 					prop_warn(prop, "choice values "
   321 					    "currently only support a "
   322 					    "single prompt");
   323 				}
   324 				if (prop->type == P_DEFAULT)
   325 					prop_warn(prop, "defaults for choice "
   326 					    "values not supported");
   327 			}
   328 			current_entry = menu;
   329 			menu_set_type(sym->type);
   330 			menu_add_symbol(P_CHOICE, sym, NULL);
   331 			prop = sym_get_choice_prop(sym);
   332 			for (ep = &prop->expr; *ep; ep = &(*ep)->left.expr)
   333 				;
   334 			*ep = expr_alloc_one(E_CHOICE, NULL);
   335 			(*ep)->right.sym = menu->sym;
   336 		}
   337 		if (menu->list && (!menu->prompt || !menu->prompt->text)) {
   338 			for (last_menu = menu->list; ; last_menu = last_menu->next) {
   339 				last_menu->parent = parent;
   340 				if (!last_menu->next)
   341 					break;
   342 			}
   343 			last_menu->next = menu->next;
   344 			menu->next = menu->list;
   345 			menu->list = NULL;
   346 		}
   347 	}
   348 
   349 	if (sym && !(sym->flags & SYMBOL_WARNED)) {
   350 		if (sym->type == S_UNKNOWN)
   351 			menu_warn(parent, "config symbol defined without type");
   352 
   353 		if (sym_is_choice(sym) && !parent->prompt)
   354 			menu_warn(parent, "choice must have a prompt");
   355 
   356 		/* Check properties connected to this symbol */
   357 		sym_check_prop(sym);
   358 		sym->flags |= SYMBOL_WARNED;
   359 	}
   360 
   361 	if (sym && !sym_is_optional(sym) && parent->prompt) {
   362 		sym->rev_dep.expr = expr_alloc_or(sym->rev_dep.expr,
   363 				expr_alloc_and(parent->prompt->visible.expr,
   364 					expr_alloc_symbol(&symbol_mod)));
   365 	}
   366 }
   367 
   368 bool menu_is_visible(struct menu *menu)
   369 {
   370 	struct menu *child;
   371 	struct symbol *sym;
   372 	tristate visible;
   373 
   374 	if (!menu->prompt)
   375 		return false;
   376 	sym = menu->sym;
   377 	if (sym) {
   378 		sym_calc_value(sym);
   379 		visible = menu->prompt->visible.tri;
   380 	} else
   381 		visible = menu->prompt->visible.tri = expr_calc_value(menu->prompt->visible.expr);
   382 
   383 	if (visible != no)
   384 		return true;
   385 	if (!sym || sym_get_tristate_value(menu->sym) == no)
   386 		return false;
   387 
   388 	for (child = menu->list; child; child = child->next)
   389 		if (menu_is_visible(child))
   390 			return true;
   391 	return false;
   392 }
   393 
   394 const char *menu_get_prompt(struct menu *menu)
   395 {
   396 	if (menu->prompt)
   397 		return _(menu->prompt->text);
   398 	else if (menu->sym)
   399 		return _(menu->sym->name);
   400 	return NULL;
   401 }
   402 
   403 struct menu *menu_get_root_menu(struct menu *menu)
   404 {
   405 	return &rootmenu;
   406 }
   407 
   408 struct menu *menu_get_parent_menu(struct menu *menu)
   409 {
   410 	enum prop_type type;
   411 
   412 	for (; menu != &rootmenu; menu = menu->parent) {
   413 		type = menu->prompt ? menu->prompt->type : 0;
   414 		if (type == P_MENU)
   415 			break;
   416 	}
   417 	return menu;
   418 }
   419