On Wed, Oct 4, 2017 at 5:37 AM, Ulf Magnusson <ulfalizer@xxxxxxxxx> wrote:
> Understanding what it represents helps a lot when reading the code, and
> it's not obvious, so document it.
>
> The ROOT_MENU flag is only set and tested by the gconf and qconf front
> ends, so leave it undocumented here. The obvious guess for what it means
> is correct.
>
> Signed-off-by: Ulf Magnusson <ulfalizer@xxxxxxxxx>
> ---
> scripts/kconfig/expr.h | 45 +++++++++++++++++++++++++++++++++++++++++++++
> 1 file changed, 45 insertions(+)
>
> diff --git a/scripts/kconfig/expr.h b/scripts/kconfig/expr.h
> index a73f762..ae7583c 100644
> --- a/scripts/kconfig/expr.h
> +++ b/scripts/kconfig/expr.h
> @@ -166,22 +166,67 @@ struct property {
> for (st = sym->prop; st; st = st->next) \
> if (st->text)
>
> +/*
> + * Represents a node in the menu tree, as seen in e.g. menuconfig (though used
> + * for all front ends). Each symbol, menu, etc. defined in the Kconfig files
> + * gets a node. A symbol defined in multiple locations gets one node at each
> + * location.
> + */
> struct menu {
> + /* The next menu node at the same level */
> struct menu *next;
> +
> + /* The parent menu node, corresponding to e.g. a menu or choice */
> struct menu *parent;
> +
> + /* The first child menu node, for e.g. menus and choices */
> struct menu *list;
> +
> + /*
> + * The symbol associated with the menu node. Choices are implemented as
> + * a special kind of symbol. NULL for menus, comments, and ifs.
> + */
> struct symbol *sym;
> +
> + /*
> + * The prompt associated with the node. This holds the prompt for a
> + * symbol as well as the text for a menu or comment, along with the
> + * type (P_PROMPT, P_MENU, etc.)
> + */
> struct property *prompt;
> +
> + /*
> + * 'visible if' dependencies. If more than one is given, they will be
> + * ANDed together.
> + */
> struct expr *visibility;
> +
> + /*
> + * Ordinary dependencies from e.g. 'depends on' and 'if', ANDed
> + * together
> + */
> struct expr *dep;
> +
> + /* MENU_* flags */
> unsigned int flags;
> +
> + /* Any help text associated with the node */
> char *help;
> +
> + /* The location where the menu node appears in the Kconfig files */
> struct file *file;
> int lineno;
> +
> + /* For use by front ends that need to store auxiliary data */
> void *data;
> };
>
> +/*
> + * Set on a menu node when the corresponding symbol changes state in some way.
> + * Can be checked by front ends.
> + */
> #define MENU_CHANGED 0x0001
> +
> #define MENU_ROOT 0x0002
>
> struct jump_key {
> --
> 2.7.4
>
Adding some CCs just because I forgot. No panic.
Cheers,
Ulf
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