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| author | Bob Duff <duff@adacore.com> | 2023-02-06 11:58:52 -0500 |
|---|---|---|
| committer | Marc Poulhiès <poulhies@adacore.com> | 2023-05-22 10:44:10 +0200 |
| commit | af1914998dcfb9908afe85b2275fd9868d689db9 (patch) | |
| tree | dba795b83a20021408187e8bb20c63a38d573819 /gcc/ada/sem_ch5.adb | |
| parent | 472f4cb52ac6f47926a19eb2c53cd848fa6b3730 (diff) | |
| download | gcc-af1914998dcfb9908afe85b2275fd9868d689db9.zip gcc-af1914998dcfb9908afe85b2275fd9868d689db9.tar.gz gcc-af1914998dcfb9908afe85b2275fd9868d689db9.tar.bz2 | |
ada: Add Is_Past_Self_Hiding_Point flag
This patch adds a flag Is_Past_Self_Hiding_Point. When False,
this will replace E_Void as the indicator for a premature use of
a declaration within itself -- for example, "X : T := X;".
One might think this flag should be called something like
Is_Hidden_From_All_Visibility, reversing the sense of
Is_Past_Self_Hiding_Point. We don't do that because we want
Is_Past_Self_Hiding_Point to be initially False by default (and we have
no mechanism for defaulting to True), and because it doesn't exactly
match the RM definition of "hidden from all visibility" (for
example, for record components).
This is work in progress; more changes are needed before we
can remove all Mutate_Ekind(..., E_Void).
gcc/ada/
* einfo.ads (Is_Past_Self_Hiding_Point): Document.
* gen_il-fields.ads (Is_Past_Self_Hiding_Point): Add to list of
fields.
* gen_il-gen-gen_entities.adb (Is_Past_Self_Hiding_Point): Declare
in all entities.
* exp_aggr.adb: Set Is_Past_Self_Hiding_Point as appropriate.
* sem.adb: Likewise.
* sem_aggr.adb: Likewise.
* sem_ch11.adb: Likewise.
* sem_ch12.adb: Likewise.
* sem_ch5.adb: Likewise.
* sem_ch7.adb: Likewise.
* sem_prag.adb: Likewise.
* sem_ch6.adb: Likewise.
(Set_Formal_Mode): Minor cleanup: Move from spec.
* sem_ch6.ads:
(Set_Formal_Mode): Minor cleanup: Move to body.
* cstand.adb: Call Set_Is_Past_Self_Hiding_Point on all entities
as soon as they are created.
* comperr.adb (Compiler_Abort): Minor cleanup -- use 'in' instead
of 'or else'.
* debug.adb: Minor comment cleanups.
Diffstat (limited to 'gcc/ada/sem_ch5.adb')
| -rw-r--r-- | gcc/ada/sem_ch5.adb | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/gcc/ada/sem_ch5.adb b/gcc/ada/sem_ch5.adb index 27ab0b7..4919e53 100644 --- a/gcc/ada/sem_ch5.adb +++ b/gcc/ada/sem_ch5.adb @@ -2374,6 +2374,7 @@ package body Sem_Ch5 is -- iterator name. Mutate_Ekind (Def_Id, E_Variable); + Set_Is_Past_Self_Hiding_Point (Def_Id); -- Provide a link between the iterator variable and the container, for -- subsequent use in cross-reference and modification information. @@ -2652,6 +2653,7 @@ package body Sem_Ch5 is else Mutate_Ekind (Def_Id, E_Loop_Parameter); + Set_Is_Past_Self_Hiding_Point (Def_Id); Error_Msg_Ada_2012_Feature ("container iterator", Sloc (N)); -- OF present @@ -2705,6 +2707,7 @@ package body Sem_Ch5 is if Has_Aspect (Typ, Aspect_Variable_Indexing) then Mutate_Ekind (Def_Id, E_Variable); + Set_Is_Past_Self_Hiding_Point (Def_Id); end if; -- If the container is a constant, iterating over it @@ -3329,6 +3332,7 @@ package body Sem_Ch5 is end if; Mutate_Ekind (Id, E_Loop_Parameter); + Set_Is_Past_Self_Hiding_Point (Id); -- A quantified expression which appears in a pre- or post-condition may -- be analyzed multiple times. The analysis of the range creates several |