On Wed, Oct 4, 2017 at 7:48 AM, Ulf Magnusson <ulfalizer@xxxxxxxxx> wrote:
> Visibility and choices in particular might be a bit tricky to figure
> out.
>
> Also fix existing comment to point out that P_MENU is also used for
> menus.
>
> Signed-off-by: Ulf Magnusson <ulfalizer@xxxxxxxxx>
> ---
> scripts/kconfig/expr.h | 45 ++++++++++++++++++++++++++++++++++++++++++++-
> 1 file changed, 44 insertions(+), 1 deletion(-)
>
> diff --git a/scripts/kconfig/expr.h b/scripts/kconfig/expr.h
> index a73f762..6344067 100644
> --- a/scripts/kconfig/expr.h
> +++ b/scripts/kconfig/expr.h
> @@ -74,17 +74,60 @@ enum {
> S_DEF_COUNT
> };
>
> +/*
> + * Represents a configuration symbol.
> + *
> + * Choices are represented as a special kind of symbol and have the
> + * SYMBOL_CHOICE bit set in 'flags'.
> + */
> struct symbol {
> + /* The next symbol in the same bucket in the symbol hash table */
> struct symbol *next;
> +
> + /* The name of the symbol, e.g. "FOO" for 'config FOO' */
> char *name;
> +
> + /* S_BOOLEAN, S_TRISTATE, ... */
> enum symbol_type type;
> +
> + /*
> + * The calculated value of the symbol. The SYMBOL_VALID bit is set in
> + * 'flags' when this is up to date. Note that this value might differ
> + * from the user value set in e.g. a .config file, due to visibility.
> + */
> struct symbol_value curr;
> +
> + /*
> + * Values for the symbol provided from outside. def[S_DEF_USER] holds
> + * the .config value.
> + */
> struct symbol_value def[S_DEF_COUNT];
> +
> + /*
> + * An upper bound on the tristate value the user can set for the symbol
> + * if it is a boolean or tristate. Calculated from prompt dependencies,
> + * which also inherit dependencies from enclosing menus, choices, and
> + * ifs. If 'n', the user value will be ignored.
> + *
> + * Symbols lacking prompts always have visibility 'n'.
> + */
> tristate visible;
> +
> + /* SYMBOL_* flags */
> int flags;
> +
> + /* List of properties. See prop_type. */
> struct property *prop;
> +
> + /* Dependencies from enclosing menus, choices, and ifs */
> struct expr_value dir_dep;
> +
> + /* Reverse dependencies through being selected by other symbols */
> struct expr_value rev_dep;
> +
> + /*
> + * "Weak" reverse dependencies through being implied by other symbols
> + */
> struct expr_value implied;
> };
>
> @@ -133,7 +176,7 @@ enum prop_type {
> P_UNKNOWN,
> P_PROMPT, /* prompt "foo prompt" or "BAZ Value" */
> P_COMMENT, /* text associated with a comment */
> - P_MENU, /* prompt associated with a menuconfig option */
> + P_MENU, /* prompt associated with a menu or menuconfig symbol */
> P_DEFAULT, /* default y */
> P_CHOICE, /* choice value */
> P_SELECT, /* select BAR */
> --
> 2.7.4
>
Adding some CCs just because I forgot. No panic.
Cheers,
Ulf
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