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kconfig: clean-up reverse dependency help implementation 

This commit splits out the special E_OR handling ('-' instead of '||')
into a dedicated helper expr_print_revdev().

Restore the original expr_print() prior to commit 1ccb271433
("kconfig: make "Selected by:" and "Implied by:" readable").

This makes sense because:

  - We need to chop those expressions only when printing the reverse
    dependency, and only when E_OR is encountered

  - Otherwise, it should be printed as before, so fall back to
    expr_print()

This also improves the behavior; for a single line, it was previously
displayed in the same line as "Selected by", like this:

  Selected by: A [=n] && B [=n]

This will be displayed in a new line, consistently:

  Selected by:
  - A [=n] && B [=n]

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Petr Vorel <pvorel@suse.cz>
This commit is contained in:
Masahiro Yamada 2018-02-20 17:18:47 +09:00
parent 84af7a6194
commit 9a47ceec54
2 changed files with 23 additions and 17 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

36
scripts/kconfig/expr.c
View File

@ -1179,7 +1179,9 @@ struct expr *expr_simplify_unmet_dep(struct expr *e1, struct expr *e2)
return expr_get_leftmost_symbol(ret);
}
static void __expr_print(struct expr *e, void (*fn)(void *, struct symbol *, const char *), void *data, int prevtoken, bool revdep)
void expr_print(struct expr *e,
void (*fn)(void *, struct symbol *, const char *),
void *data, int prevtoken)
{
if (!e) {
fn(data, NULL, "y");
@ -1234,14 +1236,9 @@ static void __expr_print(struct expr *e, void (*fn)(void *, struct symbol *, con
fn(data, e->right.sym, e->right.sym->name);
break;
case E_OR:
if (revdep && e->left.expr->type != E_OR)
fn(data, NULL, "\n - ");
__expr_print(e->left.expr, fn, data, E_OR, revdep);
if (revdep)
fn(data, NULL, "\n - ");
else
fn(data, NULL, " || ");
__expr_print(e->right.expr, fn, data, E_OR, revdep);
expr_print(e->left.expr, fn, data, E_OR);
fn(data, NULL, " || ");
expr_print(e->right.expr, fn, data, E_OR);
break;
case E_AND:
expr_print(e->left.expr, fn, data, E_AND);
@ -1274,11 +1271,6 @@ static void __expr_print(struct expr *e, void (*fn)(void *, struct symbol *, con
fn(data, NULL, ")");
}
void expr_print(struct expr *e, void (*fn)(void *, struct symbol *, const char *), void *data, int prevtoken)
{
__expr_print(e, fn, data, prevtoken, false);
}
static void expr_print_file_helper(void *data, struct symbol *sym, const char *str)
{
xfwrite(str, strlen(str), 1, data);
@ -1329,7 +1321,21 @@ void expr_gstr_print(struct expr *e, struct gstr *gs)
* line with a minus. This makes expressions much easier to read.
* Suitable for reverse dependency expressions.
*/
static void expr_print_revdep(struct expr *e,
void (*fn)(void *, struct symbol *, const char *),
void *data)
{
if (e->type == E_OR) {
expr_print_revdep(e->left.expr, fn, data);
expr_print_revdep(e->right.expr, fn, data);
} else {
fn(data, NULL, " - ");
expr_print(e, fn, data, E_NONE);
fn(data, NULL, "\n");
}
}
void expr_gstr_print_revdep(struct expr *e, struct gstr *gs)
{
__expr_print(e, expr_print_gstr_helper, gs, E_NONE, true);
expr_print_revdep(e, expr_print_gstr_helper, gs);
}

4
scripts/kconfig/menu.c
View File

@ -829,15 +829,15 @@ static void get_symbol_str(struct gstr *r, struct symbol *sym,
get_symbol_props_str(r, sym, P_SELECT, _(" Selects: "));
if (sym->rev_dep.expr) {
str_append(r, _(" Selected by: "));
expr_gstr_print_revdep(sym->rev_dep.expr, r);
str_append(r, "\n");
expr_gstr_print_revdep(sym->rev_dep.expr, r);
}
get_symbol_props_str(r, sym, P_IMPLY, _(" Implies: "));
if (sym->implied.expr) {
str_append(r, _(" Implied by: "));
expr_gstr_print_revdep(sym->implied.expr, r);
str_append(r, "\n");
expr_gstr_print_revdep(sym->implied.expr, r);
}
str_append(r, "\n\n");