diff options
Diffstat (limited to 'gcc/ada/sem_ch8.ads')
| -rw-r--r-- | gcc/ada/sem_ch8.ads | 26 |
1 files changed, 17 insertions, 9 deletions
diff --git a/gcc/ada/sem_ch8.ads b/gcc/ada/sem_ch8.ads index 195c03bd3a9..99d2b1485d4 100644 --- a/gcc/ada/sem_ch8.ads +++ b/gcc/ada/sem_ch8.ads @@ -6,7 +6,7 @@ -- -- -- S p e c -- -- -- --- Copyright (C) 1992-2012, Free Software Foundation, Inc. -- +-- Copyright (C) 1992-2013, Free Software Foundation, Inc. -- -- -- -- GNAT is free software; you can redistribute it and/or modify it under -- -- terms of the GNU General Public License as published by the Free Soft- -- @@ -148,18 +148,26 @@ package Sem_Ch8 is -- with-clause on system. N is absent when the function is called to find -- the visibility of implicit operators. - procedure Restore_Scope_Stack (Handle_Use : Boolean := True); - procedure Save_Scope_Stack (Handle_Use : Boolean := True); - -- These two procedures are called from Semantics, when a unit U1 is to + function Save_Scope_Stack + (Handle_Use : Boolean := True) return Elist_Id; + procedure Restore_Scope_Stack + (List : Elist_Id; + Handle_Use : Boolean := True); + -- These two subprograms are called from Semantics, when a unit U1 is to -- be compiled in the course of the compilation of another unit U2. This -- happens whenever Rtsfind is called. U1, the unit retrieved by Rtsfind, -- must be compiled in its own context, and the current scope stack - -- containing U2 and local scopes must be made unreachable. On return, the - -- contents of the scope stack must be made accessible again. The flag - -- Handle_Use indicates whether local use clauses must be removed or - -- installed. In the case of inlining of instance bodies, the visibility + -- containing U2 and local scopes must be made unreachable. This is + -- achieved using a call to Save_Scope_Stack. On return, the contents + -- of the scope stack must be made accessible again with a call to + -- Restore_Scope_Stack. + -- + -- The flag Handle_Use indicates whether local use clauses must be removed + -- or installed. In the case of inlining of instance bodies, the visibility -- handling is done fully in Inline_Instance_Body, and use clauses are - -- handled there. + -- handled there. Save_Scope_Stack returns the list of entities which have + -- been temporarily removed from visibility; that list must be passed to + -- Restore_Scope_Stack to restore their visibility. procedure Set_Use (L : List_Id); -- Find use clauses that are declarative items in a package declaration |