| 1 | |
| 2 | * Copyright (C) 2002 Roman Zippel <[email protected]>
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| 3 | * Released under the terms of the GNU GPL v2.0.
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| 4 |
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| 5 |
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| 6 | #include <stdlib.h>
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| 7 | #include <string.h>
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| 8 |
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| 9 | #define LKC_DIRECT_LINK
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| 10 | #include "lkc.h"
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| 11 |
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| 12 | struct menu rootmenu;
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| 13 | static struct menu **last_entry_ptr;
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| 14 |
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| 15 | struct file *file_list;
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| 16 | struct file *current_file;
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| 17 |
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| 18 | static void menu_warn(struct menu *menu, const char *fmt, ...)
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| 19 | {
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| 20 | va_list ap;
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| 21 | va_start(ap, fmt);
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| 22 | fprintf(stderr, "%s:%d:warning: ", menu->file->name, menu->lineno);
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| 23 | vfprintf(stderr, fmt, ap);
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| 24 | fprintf(stderr, "\n");
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| 25 | va_end(ap);
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| 26 | }
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| 27 |
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| 28 | static void prop_warn(struct property *prop, const char *fmt, ...)
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| 29 | {
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| 30 | va_list ap;
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| 31 | va_start(ap, fmt);
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| 32 | fprintf(stderr, "%s:%d:warning: ", prop->file->name, prop->lineno);
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| 33 | vfprintf(stderr, fmt, ap);
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| 34 | fprintf(stderr, "\n");
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| 35 | va_end(ap);
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| 36 | }
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| 37 |
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| 38 | void menu_init(void)
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| 39 | {
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| 40 | current_entry = current_menu = &rootmenu;
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| 41 | last_entry_ptr = &rootmenu.list;
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| 42 | }
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| 43 |
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| 44 | void menu_add_entry(struct symbol *sym)
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| 45 | {
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| 46 | struct menu *menu;
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| 47 |
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| 48 | menu = malloc(sizeof(*menu));
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| 49 | memset(menu, 0, sizeof(*menu));
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| 50 | menu->sym = sym;
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| 51 | menu->parent = current_menu;
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| 52 | menu->file = current_file;
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| 53 | menu->lineno = zconf_lineno();
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| 54 |
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| 55 | *last_entry_ptr = menu;
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| 56 | last_entry_ptr = &menu->next;
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| 57 | current_entry = menu;
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| 58 | }
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| 59 |
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| 60 | void menu_end_entry(void)
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| 61 | {
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| 62 | }
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| 63 |
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| 64 | struct menu *menu_add_menu(void)
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| 65 | {
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| 66 | menu_end_entry();
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| 67 | last_entry_ptr = ¤t_entry->list;
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| 68 | return current_menu = current_entry;
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| 69 | }
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| 70 |
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| 71 | void menu_end_menu(void)
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| 72 | {
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| 73 | last_entry_ptr = ¤t_menu->next;
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| 74 | current_menu = current_menu->parent;
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| 75 | }
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| 76 |
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| 77 | struct expr *menu_check_dep(struct expr *e)
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| 78 | {
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| 79 | if (!e)
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| 80 | return e;
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| 81 |
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| 82 | switch (e->type) {
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| 83 | case E_NOT:
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| 84 | e->left.expr = menu_check_dep(e->left.expr);
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| 85 | break;
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| 86 | case E_OR:
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| 87 | case E_AND:
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| 88 | e->left.expr = menu_check_dep(e->left.expr);
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| 89 | e->right.expr = menu_check_dep(e->right.expr);
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| 90 | break;
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| 91 | case E_SYMBOL:
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| 92 |
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| 93 | if (e->left.sym == &symbol_mod)
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| 94 | return expr_alloc_and(e, expr_alloc_symbol(modules_sym));
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| 95 | break;
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| 96 | default:
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| 97 | break;
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| 98 | }
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| 99 | return e;
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| 100 | }
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| 101 |
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| 102 | void menu_add_dep(struct expr *dep)
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| 103 | {
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| 104 | current_entry->dep = expr_alloc_and(current_entry->dep, menu_check_dep(dep));
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| 105 | }
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| 106 |
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| 107 | void menu_set_type(int type)
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| 108 | {
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| 109 | struct symbol *sym = current_entry->sym;
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| 110 |
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| 111 | if (sym->type == type)
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| 112 | return;
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| 113 | if (sym->type == S_UNKNOWN) {
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| 114 | sym->type = type;
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| 115 | return;
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| 116 | }
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| 117 | menu_warn(current_entry, "type of '%s' redefined from '%s' to '%s'",
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| 118 | sym->name ? sym->name : "<choice>",
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| 119 | sym_type_name(sym->type), sym_type_name(type));
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| 120 | }
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| 121 |
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| 122 | struct property *menu_add_prop(enum prop_type type, char *prompt, struct expr *expr, struct expr *dep)
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| 123 | {
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| 124 | struct property *prop = prop_alloc(type, current_entry->sym);
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| 125 |
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| 126 | prop->menu = current_entry;
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| 127 | prop->expr = expr;
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| 128 | prop->visible.expr = menu_check_dep(dep);
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| 129 |
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| 130 | if (prompt) {
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| 131 | if (isspace(*prompt)) {
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| 132 | prop_warn(prop, "leading whitespace ignored");
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| 133 | while (isspace(*prompt))
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| 134 | prompt++;
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| 135 | }
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| 136 | if (current_entry->prompt)
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| 137 | prop_warn(prop, "prompt redefined");
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| 138 | current_entry->prompt = prop;
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| 139 | }
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| 140 | prop->text = prompt;
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| 141 |
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| 142 | return prop;
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| 143 | }
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| 144 |
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| 145 | struct property *menu_add_prompt(enum prop_type type, char *prompt, struct expr *dep)
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| 146 | {
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| 147 | return menu_add_prop(type, prompt, NULL, dep);
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| 148 | }
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| 149 |
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| 150 | void menu_add_expr(enum prop_type type, struct expr *expr, struct expr *dep)
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| 151 | {
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| 152 | menu_add_prop(type, NULL, expr, dep);
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| 153 | }
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| 154 |
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| 155 | void menu_add_symbol(enum prop_type type, struct symbol *sym, struct expr *dep)
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| 156 | {
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| 157 | menu_add_prop(type, NULL, expr_alloc_symbol(sym), dep);
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| 158 | }
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| 159 |
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| 160 | void menu_add_option(int token, char *arg)
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| 161 | {
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| 162 | struct property *prop;
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| 163 |
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| 164 | switch (token) {
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| 165 | case T_OPT_MODULES:
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| 166 | prop = prop_alloc(P_DEFAULT, modules_sym);
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| 167 | prop->expr = expr_alloc_symbol(current_entry->sym);
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| 168 | break;
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| 169 | case T_OPT_DEFCONFIG_LIST:
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| 170 | if (!sym_defconfig_list)
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| 171 | sym_defconfig_list = current_entry->sym;
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| 172 | else if (sym_defconfig_list != current_entry->sym)
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| 173 | zconf_error("trying to redefine defconfig symbol");
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| 174 | break;
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| 175 | }
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| 176 | }
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| 177 |
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| 178 | static int menu_range_valid_sym(struct symbol *sym, struct symbol *sym2)
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| 179 | {
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| 180 | return sym2->type == S_INT || sym2->type == S_HEX ||
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| 181 | (sym2->type == S_UNKNOWN && sym_string_valid(sym, sym2->name));
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| 182 | }
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| 183 |
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| 184 | void sym_check_prop(struct symbol *sym)
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| 185 | {
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| 186 | struct property *prop;
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| 187 | struct symbol *sym2;
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| 188 | for (prop = sym->prop; prop; prop = prop->next) {
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| 189 | switch (prop->type) {
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| 190 | case P_DEFAULT:
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| 191 | if ((sym->type == S_STRING || sym->type == S_INT || sym->type == S_HEX) &&
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| 192 | prop->expr->type != E_SYMBOL)
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| 193 | prop_warn(prop,
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| 194 | "default for config symbol '%'"
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| 195 | " must be a single symbol", sym->name);
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| 196 | break;
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| 197 | case P_SELECT:
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| 198 | sym2 = prop_get_symbol(prop);
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| 199 | if (sym->type != S_BOOLEAN && sym->type != S_TRISTATE)
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| 200 | prop_warn(prop,
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| 201 | "config symbol '%s' uses select, but is "
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| 202 | "not boolean or tristate", sym->name);
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| 203 | else if (sym2->type == S_UNKNOWN)
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| 204 | prop_warn(prop,
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| 205 | "'select' used by config symbol '%s' "
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| 206 | "refer to undefined symbol '%s'",
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| 207 | sym->name, sym2->name);
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| 208 | else if (sym2->type != S_BOOLEAN && sym2->type != S_TRISTATE)
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| 209 | prop_warn(prop,
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| 210 | "'%s' has wrong type. 'select' only "
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| 211 | "accept arguments of boolean and "
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| 212 | "tristate type", sym2->name);
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| 213 | break;
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| 214 | case P_RANGE:
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| 215 | if (sym->type != S_INT && sym->type != S_HEX)
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| 216 | prop_warn(prop, "range is only allowed "
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| 217 | "for int or hex symbols");
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| 218 | if (!menu_range_valid_sym(sym, prop->expr->left.sym) ||
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| 219 | !menu_range_valid_sym(sym, prop->expr->right.sym))
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| 220 | prop_warn(prop, "range is invalid");
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| 221 | break;
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| 222 | default:
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| 223 | ;
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| 224 | }
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| 225 | }
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| 226 | }
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| 227 |
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| 228 | void menu_finalize(struct menu *parent)
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| 229 | {
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| 230 | struct menu *menu, *last_menu;
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| 231 | struct symbol *sym;
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| 232 | struct property *prop;
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| 233 | struct expr *parentdep, *basedep, *dep, *dep2, **ep;
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| 234 |
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| 235 | sym = parent->sym;
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| 236 | if (parent->list) {
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| 237 | if (sym && sym_is_choice(sym)) {
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| 238 |
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| 239 | for (menu = parent->list; menu; menu = menu->next) {
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| 240 | if (menu->sym) {
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| 241 | current_entry = parent;
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| 242 | menu_set_type(menu->sym->type);
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| 243 | current_entry = menu;
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| 244 | menu_set_type(sym->type);
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| 245 | break;
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| 246 | }
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| 247 | }
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| 248 | parentdep = expr_alloc_symbol(sym);
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| 249 | } else if (parent->prompt)
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| 250 | parentdep = parent->prompt->visible.expr;
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| 251 | else
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| 252 | parentdep = parent->dep;
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| 253 |
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| 254 | for (menu = parent->list; menu; menu = menu->next) {
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| 255 | basedep = expr_transform(menu->dep);
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| 256 | basedep = expr_alloc_and(expr_copy(parentdep), basedep);
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| 257 | basedep = expr_eliminate_dups(basedep);
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| 258 | menu->dep = basedep;
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| 259 | if (menu->sym)
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| 260 | prop = menu->sym->prop;
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| 261 | else
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| 262 | prop = menu->prompt;
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| 263 | for (; prop; prop = prop->next) {
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| 264 | if (prop->menu != menu)
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| 265 | continue;
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| 266 | dep = expr_transform(prop->visible.expr);
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| 267 | dep = expr_alloc_and(expr_copy(basedep), dep);
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| 268 | dep = expr_eliminate_dups(dep);
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| 269 | if (menu->sym && menu->sym->type != S_TRISTATE)
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| 270 | dep = expr_trans_bool(dep);
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| 271 | prop->visible.expr = dep;
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| 272 | if (prop->type == P_SELECT) {
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| 273 | struct symbol *es = prop_get_symbol(prop);
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| 274 | es->rev_dep.expr = expr_alloc_or(es->rev_dep.expr,
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| 275 | expr_alloc_and(expr_alloc_symbol(menu->sym), expr_copy(dep)));
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| 276 | }
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| 277 | }
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| 278 | }
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| 279 | for (menu = parent->list; menu; menu = menu->next)
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| 280 | menu_finalize(menu);
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| 281 | } else if (sym) {
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| 282 | basedep = parent->prompt ? parent->prompt->visible.expr : NULL;
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| 283 | basedep = expr_trans_compare(basedep, E_UNEQUAL, &symbol_no);
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| 284 | basedep = expr_eliminate_dups(expr_transform(basedep));
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| 285 | last_menu = NULL;
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| 286 | for (menu = parent->next; menu; menu = menu->next) {
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| 287 | dep = menu->prompt ? menu->prompt->visible.expr : menu->dep;
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| 288 | if (!expr_contains_symbol(dep, sym))
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| 289 | break;
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| 290 | if (expr_depends_symbol(dep, sym))
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| 291 | goto next;
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| 292 | dep = expr_trans_compare(dep, E_UNEQUAL, &symbol_no);
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| 293 | dep = expr_eliminate_dups(expr_transform(dep));
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| 294 | dep2 = expr_copy(basedep);
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| 295 | expr_eliminate_eq(&dep, &dep2);
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| 296 | expr_free(dep);
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| 297 | if (!expr_is_yes(dep2)) {
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| 298 | expr_free(dep2);
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| 299 | break;
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| 300 | }
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| 301 | expr_free(dep2);
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| 302 | next:
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| 303 | menu_finalize(menu);
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| 304 | menu->parent = parent;
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| 305 | last_menu = menu;
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| 306 | }
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| 307 | if (last_menu) {
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| 308 | parent->list = parent->next;
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| 309 | parent->next = last_menu->next;
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| 310 | last_menu->next = NULL;
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| 311 | }
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| 312 | }
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| 313 | for (menu = parent->list; menu; menu = menu->next) {
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| 314 | if (sym && sym_is_choice(sym) && menu->sym) {
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| 315 | menu->sym->flags |= SYMBOL_CHOICEVAL;
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| 316 | if (!menu->prompt)
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| 317 | menu_warn(menu, "choice value must have a prompt");
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| 318 | for (prop = menu->sym->prop; prop; prop = prop->next) {
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| 319 | if (prop->type == P_PROMPT && prop->menu != menu) {
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| 320 | prop_warn(prop, "choice values "
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| 321 | "currently only support a "
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| 322 | "single prompt");
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| 323 | }
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| 324 | if (prop->type == P_DEFAULT)
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| 325 | prop_warn(prop, "defaults for choice "
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| 326 | "values not supported");
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| 327 | }
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| 328 | current_entry = menu;
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| 329 | menu_set_type(sym->type);
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| 330 | menu_add_symbol(P_CHOICE, sym, NULL);
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| 331 | prop = sym_get_choice_prop(sym);
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| 332 | for (ep = &prop->expr; *ep; ep = &(*ep)->left.expr)
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| 333 | ;
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| 334 | *ep = expr_alloc_one(E_CHOICE, NULL);
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| 335 | (*ep)->right.sym = menu->sym;
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| 336 | }
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| 337 | if (menu->list && (!menu->prompt || !menu->prompt->text)) {
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| 338 | for (last_menu = menu->list; ; last_menu = last_menu->next) {
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| 339 | last_menu->parent = parent;
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| 340 | if (!last_menu->next)
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| 341 | break;
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| 342 | }
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| 343 | last_menu->next = menu->next;
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| 344 | menu->next = menu->list;
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| 345 | menu->list = NULL;
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| 346 | }
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| 347 | }
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| 348 |
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| 349 | if (sym && !(sym->flags & SYMBOL_WARNED)) {
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| 350 | if (sym->type == S_UNKNOWN)
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| 351 | menu_warn(parent, "config symbol defined without type");
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| 352 |
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| 353 | if (sym_is_choice(sym) && !parent->prompt)
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| 354 | menu_warn(parent, "choice must have a prompt");
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| 355 |
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| 356 |
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| 357 | sym_check_prop(sym);
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| 358 | sym->flags |= SYMBOL_WARNED;
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| 359 | }
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| 360 |
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| 361 | if (sym && !sym_is_optional(sym) && parent->prompt) {
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| 362 | sym->rev_dep.expr = expr_alloc_or(sym->rev_dep.expr,
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| 363 | expr_alloc_and(parent->prompt->visible.expr,
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| 364 | expr_alloc_symbol(&symbol_mod)));
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| 365 | }
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| 366 | }
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| 367 |
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| 368 | bool menu_is_visible(struct menu *menu)
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| 369 | {
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| 370 | struct menu *child;
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| 371 | struct symbol *sym;
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| 372 | tristate visible;
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| 373 |
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| 374 | if (!menu->prompt)
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| 375 | return false;
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| 376 | sym = menu->sym;
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| 377 | if (sym) {
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| 378 | sym_calc_value(sym);
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| 379 | visible = menu->prompt->visible.tri;
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| 380 | } else
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| 381 | visible = menu->prompt->visible.tri = expr_calc_value(menu->prompt->visible.expr);
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| 382 |
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| 383 | if (visible != no)
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| 384 | return true;
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| 385 | if (!sym || sym_get_tristate_value(menu->sym) == no)
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| 386 | return false;
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| 387 |
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| 388 | for (child = menu->list; child; child = child->next)
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| 389 | if (menu_is_visible(child))
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| 390 | return true;
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| 391 | return false;
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| 392 | }
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| 393 |
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| 394 | const char *menu_get_prompt(struct menu *menu)
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| 395 | {
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| 396 | if (menu->prompt)
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| 397 | return _(menu->prompt->text);
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| 398 | else if (menu->sym)
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| 399 | return _(menu->sym->name);
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| 400 | return NULL;
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| 401 | }
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| 402 |
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| 403 | struct menu *menu_get_root_menu(struct menu *menu)
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| 404 | {
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| 405 | return &rootmenu;
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| 406 | }
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| 407 |
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| 408 | struct menu *menu_get_parent_menu(struct menu *menu)
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| 409 | {
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| 410 | enum prop_type type;
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| 411 |
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| 412 | for (; menu != &rootmenu; menu = menu->parent) {
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| 413 | type = menu->prompt ? menu->prompt->type : 0;
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| 414 | if (type == P_MENU)
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| 415 | break;
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| 416 | }
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| 417 | return menu;
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| 418 | }
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| 419 |
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