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------------------------------------------------------------------------------
-- --
-- GNAT COMPILER COMPONENTS --
-- --
-- E X P _ C H 3 --
-- --
-- S p e c --
-- --
-- $Revision$
-- --
-- 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 (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;
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