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Diffstat (limited to 'gcc/ada/exp_ch3.ads')
-rw-r--r-- | gcc/ada/exp_ch3.ads | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/gcc/ada/exp_ch3.ads b/gcc/ada/exp_ch3.ads new file mode 100644 index 00000000000..ff65667b8e5 --- /dev/null +++ b/gcc/ada/exp_ch3.ads @@ -0,0 +1,104 @@ +------------------------------------------------------------------------------ +-- -- +-- GNAT COMPILER COMPONENTS -- +-- -- +-- E X P _ C H 3 -- +-- -- +-- S p e c -- +-- -- +-- $Revision: 1.36 $ +-- -- +-- Copyright (C) 1992-2001 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- -- +-- ware Foundation; either version 2, or (at your option) any later ver- -- +-- sion. GNAT is distributed in the hope that it will be useful, but WITH- -- +-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY -- +-- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License -- +-- for more details. You should have received a copy of the GNU General -- +-- Public License distributed with GNAT; see file COPYING. If not, write -- +-- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, -- +-- MA 02111-1307, USA. -- +-- -- +-- GNAT was originally developed by the GNAT team at New York University. -- +-- It is now maintained by Ada Core Technologies Inc (http://www.gnat.com). -- +-- -- +------------------------------------------------------------------------------ + +-- Expand routines for chapter 3 constructs + +with Types; use Types; +with Elists; use Elists; + +package Exp_Ch3 is + + procedure Expand_N_Object_Declaration (N : Node_Id); + procedure Expand_N_Subtype_Indication (N : Node_Id); + procedure Expand_N_Variant_Part (N : Node_Id); + procedure Expand_N_Full_Type_Declaration (N : Node_Id); + + procedure Expand_Previous_Access_Type (N : Node_Id; Def_Id : Entity_Id); + -- For a full type declaration that contains tasks, or that is a task, + -- check whether there exists an access type whose designated type is an + -- incomplete declarations for the current composite type. If so, build + -- the master for that access type, now that it is known to denote an + -- object with tasks. + + procedure Expand_Derived_Record (T : Entity_Id; Def : Node_Id); + -- Add a field _parent in the extension part of the record. + + procedure Build_Discr_Checking_Funcs (N : Node_Id); + -- Builds function which checks whether the component name is consistent + -- with the current discriminants. N is the full type declaration node, + -- and the discriminant checking functions are inserted after this node. + + function Build_Initialization_Call + (Loc : Source_Ptr; + Id_Ref : Node_Id; + Typ : Entity_Id; + In_Init_Proc : Boolean := False; + Enclos_Type : Entity_Id := Empty; + Discr_Map : Elist_Id := New_Elmt_List) + return List_Id; + -- Builds a call to the initialization procedure of the Id entity. Id_Ref + -- is either a new reference to Id (for record fields), or an indexed + -- component (for array elements). Loc is the source location for the + -- constructed tree, and Typ is the type of the entity (the initialization + -- procedure of the base type is the procedure that actually gets called). + -- In_Init_Proc has to be set to True when the call is itself in an Init + -- procedure in order to enable the use of discriminals. Enclos_type is + -- the type of the init_proc and it is used for various expansion cases + -- including the case where Typ is a task type which is a array component, + -- the indices of the enclosing type are used to build the string that + -- identifies each task at runtime. + -- + -- Discr_Map is used to replace discriminants by their discriminals in + -- expressions used to constrain record components. In the presence of + -- entry families bounded by discriminants, protected type discriminants + -- can appear within expressions in array bounds (not as stand-alone + -- identifiers) and a general replacement is necessary. + + procedure Freeze_Type (N : Node_Id); + -- This procedure executes the freezing actions associated with the given + -- freeze type node N. + + function Needs_Simple_Initialization (T : Entity_Id) return Boolean; + -- Certain types need initialization even though there is no specific + -- initialization routine. In this category are access types (which + -- need initializing to null), packed array types whose implementation + -- is a modular type, and all scalar types if Normalize_Scalars is set, + -- as well as private types whose underlying type is present and meets + -- any of these criteria. Finally, descendants of String and Wide_String + -- also need initialization in Initialize/Normalize_Scalars mode. + + function Get_Simple_Init_Val + (T : Entity_Id; + Loc : Source_Ptr) + return Node_Id; + -- For a type which Needs_Simple_Initialization (see above), prepares + -- the tree for an expression representing the required initial value. + -- Loc is the source location used in constructing this tree which is + -- returned as the result of the call. + +end Exp_Ch3; |