From 554fd8c5195424bdbcabf5de30fdc183aba391bd Mon Sep 17 00:00:00 2001 From: upstream source tree Date: Sun, 15 Mar 2015 20:14:05 -0400 Subject: obtained gcc-4.6.4.tar.bz2 from upstream website; verified gcc-4.6.4.tar.bz2.sig; imported gcc-4.6.4 source tree from verified upstream tarball. downloading a git-generated archive based on the 'upstream' tag should provide you with a source tree that is binary identical to the one extracted from the above tarball. if you have obtained the source via the command 'git clone', however, do note that line-endings of files in your working directory might differ from line-endings of the respective files in the upstream repository. --- gcc/ada/exp_ch3.ads | 158 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 158 insertions(+) create mode 100644 gcc/ada/exp_ch3.ads (limited to 'gcc/ada/exp_ch3.ads') diff --git a/gcc/ada/exp_ch3.ads b/gcc/ada/exp_ch3.ads new file mode 100644 index 000000000..beb74b562 --- /dev/null +++ b/gcc/ada/exp_ch3.ads @@ -0,0 +1,158 @@ +------------------------------------------------------------------------------ +-- -- +-- GNAT COMPILER COMPONENTS -- +-- -- +-- E X P _ C H 3 -- +-- -- +-- S p e c -- +-- -- +-- Copyright (C) 1992-2010, 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 3, 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 COPYING3. If not, go to -- +-- http://www.gnu.org/licenses for a complete copy of the license. -- +-- -- +-- GNAT was originally developed by the GNAT team at New York University. -- +-- Extensive contributions were provided by Ada Core Technologies Inc. -- +-- -- +------------------------------------------------------------------------------ + +-- Expand routines for chapter 3 constructs + +with Types; use Types; +with Elists; use Elists; +with Uintp; use Uintp; + +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_Record_Extension (T : Entity_Id; Def : Node_Id); + -- Add a field _parent in the extension part of the record + + procedure Build_Class_Wide_Master (T : Entity_Id); + -- For access to class-wide limited types we must build a task master + -- because some subsequent extension may add a task component. To avoid + -- bringing in the tasking run-time whenever an access-to-class-wide + -- limited type is used, we use the soft-link mechanism and add a level of + -- indirection to calls to routines that manipulate Master_Ids. This must + -- also be used for anonymous access types whose designated type is a task + -- or synchronized interface. + + 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; + With_Default_Init : Boolean := False; + Constructor_Ref : Node_Id := Empty) return List_Id; + -- Builds a call to the initialization procedure for the base type of Typ, + -- passing it the object denoted by Id_Ref, plus additional parameters as + -- appropriate for the type (the _Master, for task types, for example). + -- Loc is the source location for the constructed tree. In_Init_Proc has + -- to be set to True when the call is itself in an init proc in order to + -- enable the use of discriminals. Enclos_Type is the enclosing type when + -- initializing a component in an outer init proc, and it is used for + -- various expansion cases including the case where Typ is a task type + -- which is an array component, the indexes 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. + -- + -- Ada 2005 (AI-287): With_Default_Init is used to indicate that the + -- initialization call corresponds to a default initialized component + -- of an aggregate. + -- + -- Constructor_Ref is a call to a constructor subprogram. It is currently + -- used only to support C++ constructors. + + procedure Build_Master_Renaming (N : Node_Id; T : Entity_Id); + -- If the designated type of an access type is a task type or contains + -- tasks, we make sure that a _Master variable is declared in the current + -- scope, and then declare a renaming for it: + -- + -- atypeM : Master_Id renames _Master; + -- + -- where atyp is the name of the access type. This declaration is + -- used when an allocator for the access type is expanded. The node N + -- is the full declaration of the designated type that contains tasks. + -- The renaming declaration is inserted before N, and after the Master + -- declaration. + + function Freeze_Type (N : Node_Id) return Boolean; + -- This function executes the freezing actions associated with the given + -- freeze type node N and returns True if the node is to be deleted. We + -- delete the node if it is present just for front end purpose and we don't + -- want Gigi to see the node. This function can't delete the node itself + -- since it would confuse any remaining processing of the freeze node. + + procedure Init_Secondary_Tags + (Typ : Entity_Id; + Target : Node_Id; + Stmts_List : List_Id; + Fixed_Comps : Boolean := True; + Variable_Comps : Boolean := True); + -- Ada 2005 (AI-251): Initialize the tags of the secondary dispatch tables + -- of Typ. The generated code referencing tag fields of Target is appended + -- to Stmts_List. If Fixed_Comps is True then the tag components located at + -- fixed positions of Target are initialized; if Variable_Comps is True + -- then tags components located at variable positions of Target are + -- initialized. + + function Needs_Simple_Initialization + (T : Entity_Id; + Consider_IS : Boolean := True) 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. Consider_IS is + -- normally True. If it is False, the Initialize_Scalars is not considered + -- in determining whether simple initialization is needed. + + function Get_Simple_Init_Val + (T : Entity_Id; + N : Node_Id; + Size : Uint := No_Uint) return Node_Id; + -- For a type which Needs_Simple_Initialization (see above), prepares the + -- tree for an expression representing the required initial value. N is a + -- node whose source location used in constructing this tree which is + -- returned as the result of the call. The Size parameter indicates the + -- target size of the object if it is known (indicated by a value that is + -- not No_Uint and is greater than zero). If Size is not given (Size set to + -- No_Uint, or non-positive), then the Esize of T is used as an estimate of + -- the Size. The object size is needed to prepare a known invalid value for + -- use by Normalize_Scalars. A call to this routine where T is a scalar + -- type is only valid if we are in Normalize_Scalars or Initialize_Scalars + -- mode, or if N is the node for a 'Invalid_Value attribute node. + +end Exp_Ch3; -- cgit v1.2.3