X-Git-Url: http://git.sourceforge.jp/view?a=blobdiff_plain;f=gcc%2Fada%2Fexp_ch3.ads;h=6738ae958f9a0951c630735ee923a5de0e9650d1;hb=a34480d83b68142f300347d89d233f971438cf5d;hp=59f8ef710084fdf5c9b0c313564ea7080d89c1c4;hpb=7189d17fd684291638652f906a2c14487fe77419;p=pf3gnuchains%2Fgcc-fork.git diff --git a/gcc/ada/exp_ch3.ads b/gcc/ada/exp_ch3.ads index 59f8ef71008..6738ae958f9 100644 --- a/gcc/ada/exp_ch3.ads +++ b/gcc/ada/exp_ch3.ads @@ -6,18 +6,17 @@ -- -- -- S p e c -- -- -- --- Copyright (C) 1992-2005 Free Software Foundation, Inc. -- +-- Copyright (C) 1992-2009, 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- -- +-- 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 COPYING. If not, write -- --- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, -- --- MA 02111-1307, USA. -- +-- 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. -- @@ -40,12 +39,21 @@ package Exp_Ch3 is 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. + -- 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. + -- 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 @@ -59,18 +67,18 @@ package Exp_Ch3 is In_Init_Proc : Boolean := False; Enclos_Type : Entity_Id := Empty; Discr_Map : Elist_Id := New_Elmt_List; - With_Default_Init : Boolean := False) 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 - -- proc 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. + 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 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 @@ -81,32 +89,66 @@ package Exp_Ch3 is -- 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 Freeze_Type (N : Node_Id); - -- This procedure executes the freezing actions associated with the given - -- freeze type node N. + 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) 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. + -- 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; + 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. - -- Loc is the source location used in constructing this tree which is + -- 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. + -- 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;