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76df6815da
Extend the "depends on" syntax to support conditional dependencies using "depends on X if Y". While functionally equivalent to "depends on X || (Y == n)", "depends on X if Y" is much more readable and makes the kconfig language uniform in supporting the "if <expr>" suffix. This also improves readability for "optional" dependencies, which are the subset of conditional dependencies where X is Y. Previously such optional dependencies had to be expressed as the counterintuitive "depends on X || !X", now this can be represented as "depends on X if X". The change is implemented by converting the "X if Y" syntax into the "X || (Y == n)" syntax during "depends on" token processing. Signed-off-by: Nicolas Pitre <nico@fluxnic.net> [Graham Roff: Rewrote commit message, updated patch, added tests] Signed-off-by: Graham Roff <grahamr@qti.qualcomm.com> Acked-by: Randy Dunlap <rdunlap@infradead.org> Link: https://patch.msgid.link/20251215-kconfig_conditional_deps-v3-1-59519af0a5df@qti.qualcomm.com [nathan: Minor adjustments to spacing] Signed-off-by: Nathan Chancellor <nathan@kernel.org>
138 lines
3.6 KiB
C
138 lines
3.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
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*/
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#ifndef LKC_H
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#define LKC_H
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#include <assert.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include "expr.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include "lkc_proto.h"
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#define SRCTREE "srctree"
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#ifndef CONFIG_
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#define CONFIG_ "CONFIG_"
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#endif
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static inline const char *CONFIG_prefix(void)
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{
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return getenv( "CONFIG_" ) ?: CONFIG_;
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}
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#undef CONFIG_
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#define CONFIG_ CONFIG_prefix()
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extern int yylineno;
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void zconfdump(FILE *out);
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void zconf_starthelp(void);
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FILE *zconf_fopen(const char *name);
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void zconf_initscan(const char *name);
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void zconf_nextfile(const char *name);
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/* confdata.c */
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extern struct gstr autoconf_cmd;
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const char *conf_get_configname(void);
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/* confdata.c and expr.c */
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static inline void xfwrite(const void *str, size_t len, size_t count, FILE *out)
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{
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assert(len != 0);
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if (fwrite(str, len, count, out) != count)
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fprintf(stderr, "Error in writing or end of file.\n");
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}
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/* util.c */
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const char *file_lookup(const char *name);
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/* lexer.l */
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int yylex(void);
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struct gstr {
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size_t len;
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char *s;
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/*
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* when max_width is not zero long lines in string s (if any) get
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* wrapped not to exceed the max_width value
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*/
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int max_width;
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};
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struct gstr str_new(void);
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void str_free(struct gstr *gs);
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void str_append(struct gstr *gs, const char *s);
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void str_printf(struct gstr *gs, const char *fmt, ...);
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char *str_get(const struct gstr *gs);
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/* menu.c */
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struct menu *menu_next(struct menu *menu, struct menu *root);
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#define menu_for_each_sub_entry(menu, root) \
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for (menu = menu_next(root, root); menu; menu = menu_next(menu, root))
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#define menu_for_each_entry(menu) \
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menu_for_each_sub_entry(menu, &rootmenu)
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void _menu_init(void);
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void menu_warn(const struct menu *menu, const char *fmt, ...);
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struct menu *menu_add_menu(void);
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void menu_end_menu(void);
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void menu_add_entry(struct symbol *sym, enum menu_type type);
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void menu_add_dep(struct expr *dep, struct expr *cond);
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void menu_add_visibility(struct expr *dep);
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struct property *menu_add_prompt(enum prop_type type, const char *prompt,
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struct expr *dep);
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void menu_add_expr(enum prop_type type, struct expr *expr, struct expr *dep);
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void menu_add_symbol(enum prop_type type, struct symbol *sym, struct expr *dep);
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void menu_finalize(void);
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void menu_set_type(int type);
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extern struct menu rootmenu;
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bool menu_is_empty(struct menu *menu);
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bool menu_is_visible(struct menu *menu);
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bool menu_has_prompt(const struct menu *menu);
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const char *menu_get_prompt(const struct menu *menu);
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struct menu *menu_get_parent_menu(struct menu *menu);
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struct menu *menu_get_menu_or_parent_menu(struct menu *menu);
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int get_jump_key_char(void);
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struct gstr get_relations_str(struct symbol **sym_arr, struct list_head *head);
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void menu_get_ext_help(struct menu *menu, struct gstr *help);
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void menu_dump(void);
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/* symbol.c */
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void sym_clear_all_valid(void);
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struct symbol *sym_choice_default(struct menu *choice);
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struct symbol *sym_calc_choice(struct menu *choice);
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struct property *sym_get_range_prop(struct symbol *sym);
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const char *sym_get_string_default(struct symbol *sym);
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struct symbol *sym_check_deps(struct symbol *sym);
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struct symbol *prop_get_symbol(const struct property *prop);
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static inline tristate sym_get_tristate_value(const struct symbol *sym)
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{
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return sym->curr.tri;
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}
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static inline bool sym_is_choice(const struct symbol *sym)
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{
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/* A choice is a symbol with no name */
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return sym->name == NULL;
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}
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bool sym_is_choice_value(const struct symbol *sym);
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static inline bool sym_has_value(const struct symbol *sym)
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{
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return sym->flags & SYMBOL_DEF_USER ? true : false;
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}
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#ifdef __cplusplus
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}
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#endif
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#endif /* LKC_H */
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