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| author | Arnaud Charlet <charlet@gcc.gnu.org> | 2004-12-08 12:46:11 +0100 |
|---|---|---|
| committer | Arnaud Charlet <charlet@gcc.gnu.org> | 2004-12-08 12:46:11 +0100 |
| commit | bd7f7a653fcfe6f9e6c62d18522d8792341cfd48 (patch) | |
| tree | 0950bd0e2dbb0871d4fd7b9aa078d529c09dbd82 /gcc/ada/exp_dist.adb | |
| parent | 14532762245860c7f5fef6cd83f283359590b22b (diff) | |
| download | gcc-bd7f7a653fcfe6f9e6c62d18522d8792341cfd48.zip gcc-bd7f7a653fcfe6f9e6c62d18522d8792341cfd48.tar.gz gcc-bd7f7a653fcfe6f9e6c62d18522d8792341cfd48.tar.bz2 | |
exp_dist.adb (Specific_Build_General_Calling_Stubs, [...]): New subprograms.
* exp_dist.adb (Specific_Build_General_Calling_Stubs,
Specific_Build_Stub_Target): New subprograms.
(Build_Subprogram_Calling_Stubs): Make this procedure independent from
the PCS implementation used, using the above PCS-customized subprograms.
Minor reformatting.
(PolyORB_Support.Helpers): New subunit containing supporting subprograms
for generation of DSA code targeted to the PolyORB PCS.
(Add_Stub_Type): Rewrite to isolate the parts that are specific to one
implementation of the partition communication subsystem in ancillary
subprograms.
(Specific_Build_Stub_Type, GARLIC_Support.Build_Stub_Type,
PolyORB_Support.Build_Stub_Type): New subrograms containing the
PCS-specific part of Add_Stub_Type.
(Insert_Partition_Check): Use runtime library function to perform
E.4(19) check.
* rtsfind.ads: New entity System.PolyORB_Interface.Make_Ref
(RE_Same_Partition): New entity, from s-parint.
* s-parint.ads, s-parint.adb (Same_Partition): New subprogram.
From-SVN: r91884
Diffstat (limited to 'gcc/ada/exp_dist.adb')
| -rw-r--r-- | gcc/ada/exp_dist.adb | 6475 |
1 files changed, 5721 insertions, 754 deletions
diff --git a/gcc/ada/exp_dist.adb b/gcc/ada/exp_dist.adb index cb00cc5..effeee6 100644 --- a/gcc/ada/exp_dist.adb +++ b/gcc/ada/exp_dist.adb @@ -41,12 +41,14 @@ with Sem; use Sem; with Sem_Ch3; use Sem_Ch3; with Sem_Ch8; use Sem_Ch8; with Sem_Dist; use Sem_Dist; +with Sem_Eval; use Sem_Eval; with Sem_Util; use Sem_Util; with Sinfo; use Sinfo; with Snames; use Snames; with Stand; use Stand; with Stringt; use Stringt; with Tbuild; use Tbuild; +with Ttypes; use Ttypes; with Uintp; use Uintp; package body Exp_Dist is @@ -186,40 +188,6 @@ package body Exp_Dist is -- tag fixup (Get_Unique_Remote_Pointer may have changed Pointer'Tag to -- RACW_Stub_Type'Tag, while the desired tag is that of Stub_Type). - procedure Build_General_Calling_Stubs - (Decls : List_Id; - Statements : List_Id; - Target_Partition : Entity_Id; - RPC_Receiver : Node_Id; - Subprogram_Id : Node_Id; - Asynchronous : Node_Id := Empty; - Is_Known_Asynchronous : Boolean := False; - Is_Known_Non_Asynchronous : Boolean := False; - Is_Function : Boolean; - Spec : Node_Id; - Stub_Type : Entity_Id := Empty; - RACW_Type : Entity_Id := Empty; - Nod : Node_Id); - -- Build calling stubs for general purpose. The parameters are: - -- Decls : a place to put declarations - -- Statements : a place to put statements - -- Target_Partition : a node containing the target partition that must - -- be a N_Defining_Identifier - -- RPC_Receiver : a node containing the RPC receiver - -- Subprogram_Id : a node containing the subprogram ID - -- Asynchronous : True if an APC must be made instead of an RPC. - -- The value needs not be supplied if one of the - -- Is_Known_... is True. - -- Is_Known_Async... : True if we know that this is asynchronous - -- Is_Known_Non_A... : True if we know that this is not asynchronous - -- Spec : a node with a Parameter_Specifications and - -- a Subtype_Mark if applicable - -- Stub_Type : in case of RACW stubs, parameters of type access - -- to Stub_Type will be marshalled using the - -- address of the object (the addr field) rather - -- than using the 'Write on the stub itself - -- Nod : used to provide sloc for generated code - function Build_Subprogram_Calling_Stubs (Vis_Decl : Node_Id; Subp_Id : Node_Id; @@ -254,15 +222,8 @@ package body Exp_Dist is -- class-wide type before doing the real call using any of the RACW type -- pointing on the designated type. - function Build_RPC_Receiver_Specification - (RPC_Receiver : Entity_Id; - Stream_Parameter : Entity_Id; - Result_Parameter : Entity_Id) return Node_Id; - -- Make a subprogram specification for an RPC receiver, - -- with the given defining unit name and formal parameters. - procedure Build_RPC_Receiver_Body - (RPC_Receiver : Entity_Id; + (RPC_Receiver : Entity_Id; Stream : out Entity_Id; Result : out Entity_Id; Subp_Id : out Entity_Id; @@ -331,11 +292,6 @@ package body Exp_Dist is -- Create a renaming declaration of subprogram Nam, -- and register it as a TSS for Typ with name TSS_Nam. - pragma Warnings (Off); - pragma Unreferenced (Set_Renaming_TSS); - -- This subprogram is for the PolyORB implementation - pragma Warnings (On); - function Need_Extra_Constrained (Parameter : Node_Id) return Boolean; -- Return True if the current parameter needs an extra formal to reflect -- its constrained status. @@ -345,11 +301,32 @@ package body Exp_Dist is -- Return True if the current parameter is a controlling formal argument -- of type Stub_Type or access to Stub_Type. + procedure Declare_Create_NVList + (Loc : Source_Ptr; + NVList : Entity_Id; + Decls : List_Id; + Stmts : List_Id); + -- Append the declaration of NVList to Decls, and its + -- initialization to Stmts. + + function Add_Parameter_To_NVList + (Loc : Source_Ptr; + NVList : Entity_Id; + Parameter : Entity_Id; + Constrained : Boolean; + RACW_Ctrl : Boolean := False; + Any : Entity_Id) return Node_Id; + -- Return a call to Add_Item to add the Any corresponding + -- to the designated formal Parameter (with the indicated + -- Constrained status) to NVList. RACW_Ctrl must be set to + -- True for controlling formals of distributed object primitive + -- operations. + type Stub_Structure is record - Stub_Type : Entity_Id; - Stub_Type_Access : Entity_Id; - RPC_Receiver_Decl : Node_Id; - RACW_Type : Entity_Id; + Stub_Type : Entity_Id; + Stub_Type_Access : Entity_Id; + RPC_Receiver_Decl : Node_Id; + RACW_Type : Entity_Id; end record; -- This structure is necessary because of the two phases analysis of -- a RACW declaration occurring in the same Remote_Types package as the @@ -403,13 +380,13 @@ package body Exp_Dist is -- Mapping between a RCI subprogram and the corresponding calling stubs procedure Add_Stub_Type - (Designated_Type : Entity_Id; - RACW_Type : Entity_Id; - Decls : List_Id; - Stub_Type : out Entity_Id; - Stub_Type_Access : out Entity_Id; - RPC_Receiver_Decl : out Node_Id; - Existing : out Boolean); + (Designated_Type : Entity_Id; + RACW_Type : Entity_Id; + Decls : List_Id; + Stub_Type : out Entity_Id; + Stub_Type_Access : out Entity_Id; + RPC_Receiver_Decl : out Node_Id; + Existing : out Boolean); -- Add the declaration of the stub type, the access to stub type and the -- object RPC receiver at the end of Decls. If these already exist, -- then nothing is added in the tree but the right values are returned @@ -491,10 +468,88 @@ package body Exp_Dist is -- bodies are inserted at the end of Decls. PCS-specific ancillary -- subprogram for Add_RAST_Features. + -- An RPC_Target record is used during construction of calling stubs + -- to pass PCS-specific tree fragments corresponding to the information + -- necessary to locate the target of a remote subprogram call. + + type RPC_Target (PCS_Kind : PCS_Names) is record + case PCS_Kind is + when Name_PolyORB_DSA => + Object : Node_Id; + -- An expression whose value is a PolyORB reference to the target + -- object. + when others => + Partition : Entity_Id; + -- A variable containing the Partition_ID of the target parition + + RPC_Receiver : Node_Id; + -- An expression whose value is the address of the target RPC + -- receiver. + end case; + end record; + + procedure Specific_Build_General_Calling_Stubs + (Decls : List_Id; + Statements : List_Id; + Target : RPC_Target; + Subprogram_Id : Node_Id; + Asynchronous : Node_Id := Empty; + Is_Known_Asynchronous : Boolean := False; + Is_Known_Non_Asynchronous : Boolean := False; + Is_Function : Boolean; + Spec : Node_Id; + Stub_Type : Entity_Id := Empty; + RACW_Type : Entity_Id := Empty; + Nod : Node_Id); + -- Build calling stubs for general purpose. The parameters are: + -- Decls : a place to put declarations + -- Statements : a place to put statements + -- Target : PCS-specific target information (see details + -- in RPC_Target declaration). + -- Subprogram_Id : a node containing the subprogram ID + -- Asynchronous : True if an APC must be made instead of an RPC. + -- The value needs not be supplied if one of the + -- Is_Known_... is True. + -- Is_Known_Async... : True if we know that this is asynchronous + -- Is_Known_Non_A... : True if we know that this is not asynchronous + -- Spec : a node with a Parameter_Specifications and + -- a Subtype_Mark if applicable + -- Stub_Type : in case of RACW stubs, parameters of type access + -- to Stub_Type will be marshalled using the + -- address of the object (the addr field) rather + -- than using the 'Write on the stub itself + -- Nod : used to provide sloc for generated code + + function Specific_Build_Stub_Target + (Loc : Source_Ptr; + Decls : List_Id; + RCI_Locator : Entity_Id; + Controlling_Parameter : Entity_Id) return RPC_Target; + -- Build call target information nodes for use within calling stubs. In the + -- RCI case, RCI_Locator is the entity for the instance of RCI_Locator. If + -- for an RACW, Controlling_Parameter is the entity for the controlling + -- formal parameter used to determine the location of the target of the + -- call. Decls provides a location where variable declarations can be + -- appended to construct the necessary values. + + procedure Specific_Build_Stub_Type + (RACW_Type : Entity_Id; + Stub_Type : Entity_Id; + Stub_Type_Decl : out Node_Id; + RPC_Receiver_Decl : out Node_Id); + -- Build a type declaration for the stub type associated with an RACW + -- type, and the necessary RPC receiver, if applicable. PCS-specific + -- ancillary subprogram for Add_Stub_Type. If no RPC receiver declaration + -- is generated, then RPC_Receiver_Decl is set to Empty. + package GARLIC_Support is -- Support for generating DSA code that uses the GARLIC PCS + -- The subprograms below provide the GARLIC versions of + -- the corresponding Specific_<subprogram> routine declared + -- above. + procedure Add_RACW_Features (RACW_Type : Entity_Id; Stub_Type : Entity_Id; @@ -507,12 +562,50 @@ package body Exp_Dist is RAS_Type : Entity_Id; Decls : List_Id); + procedure Build_General_Calling_Stubs + (Decls : List_Id; + Statements : List_Id; + Target_Partition : Entity_Id; -- From RPC_Target + Target_RPC_Receiver : Node_Id; -- From RPC_Target + Subprogram_Id : Node_Id; + Asynchronous : Node_Id := Empty; + Is_Known_Asynchronous : Boolean := False; + Is_Known_Non_Asynchronous : Boolean := False; + Is_Function : Boolean; + Spec : Node_Id; + Stub_Type : Entity_Id := Empty; + RACW_Type : Entity_Id := Empty; + Nod : Node_Id); + + function Build_Stub_Target + (Loc : Source_Ptr; + Decls : List_Id; + RCI_Locator : Entity_Id; + Controlling_Parameter : Entity_Id) return RPC_Target; + + procedure Build_Stub_Type + (RACW_Type : Entity_Id; + Stub_Type : Entity_Id; + Stub_Type_Decl : out Node_Id; + RPC_Receiver_Decl : out Node_Id); + + function Build_RPC_Receiver_Specification + (RPC_Receiver : Entity_Id; + Stream_Parameter : Entity_Id; + Result_Parameter : Entity_Id) return Node_Id; + -- Make a subprogram specification for an RPC receiver, + -- with the given defining unit name and formal parameters. + end GARLIC_Support; package PolyORB_Support is -- Support for generating DSA code that uses the PolyORB PCS + -- The subprograms below provide the PolyORB versions of + -- the corresponding Specific_<subprogram> routine declared + -- above. + procedure Add_RACW_Features (RACW_Type : Entity_Id; Desig : Entity_Id; @@ -526,6 +619,130 @@ package body Exp_Dist is RAS_Type : Entity_Id; Decls : List_Id); + procedure Build_General_Calling_Stubs + (Decls : List_Id; + Statements : List_Id; + Target_Object : Node_Id; -- From RPC_Target + Subprogram_Id : Node_Id; + Asynchronous : Node_Id := Empty; + Is_Known_Asynchronous : Boolean := False; + Is_Known_Non_Asynchronous : Boolean := False; + Is_Function : Boolean; + Spec : Node_Id; + Stub_Type : Entity_Id := Empty; + RACW_Type : Entity_Id := Empty; + Nod : Node_Id); + + function Build_Stub_Target + (Loc : Source_Ptr; + Decls : List_Id; + RCI_Locator : Entity_Id; + Controlling_Parameter : Entity_Id) return RPC_Target; + + procedure Build_Stub_Type + (RACW_Type : Entity_Id; + Stub_Type : Entity_Id; + Stub_Type_Decl : out Node_Id; + RPC_Receiver_Decl : out Node_Id); + + function Build_RPC_Receiver_Specification + (RPC_Receiver : Entity_Id; + Request_Parameter : Entity_Id) return Node_Id; + -- Make a subprogram specification for an RPC receiver, + -- with the given defining unit name and formal parameters. + + pragma Warnings (Off); + pragma Unreferenced (Build_RPC_Receiver_Specification); + -- XXX PolyORB support is not completely included yet + pragma Warnings (On); + + package Helpers is + + -- Routines to build distribtion helper subprograms for user-defined + -- types. For implementation of the Distributed systems annex (DSA) + -- over the PolyORB generic middleware components, it is necessary to + -- generate several supporting subprograms for each application data + -- type used in inter-partition communication. These subprograms are: + -- * a Typecode function returning a high-level description of the + -- type's structure; + -- * two conversion functions allowing conversion of values of the + -- type from and to the generic data containers used by PolyORB. + -- These generic containers are called 'Any' type values after + -- the CORBA terminology, and hence the conversion subprograms + -- are named To_Any and From_Any. + + + function Build_From_Any_Call + (Typ : Entity_Id; + N : Node_Id; + Decls : List_Id) return Node_Id; + -- Build call to From_Any attribute function of type Typ with + -- expression N as actual parameter. Decls is the declarations list + -- for an appropriate enclosing scope of the point where the call + -- will be inserted; if the From_Any attribute for Typ needs to be + -- generated at this point, its declaration is appended to Decls. + + procedure Build_From_Any_Function + (Loc : Source_Ptr; + Typ : Entity_Id; + Decl : out Node_Id; + Fnam : out Entity_Id); + -- Build From_Any attribute function for Typ. Loc is the reference + -- location for generated nodes, Typ is the type for which the + -- conversion function is generated. On return, Decl and Fnam contain + -- the declaration and entity for the newly-created function. + + function Build_To_Any_Call + (N : Node_Id; + Decls : List_Id) return Node_Id; + -- Build call to To_Any attribute function with expression as actual + -- parameter. Decls is the declarations list for an appropriate + -- enclosing scope of the point where the call will be inserted; if + -- the To_Any attribute for Typ needs to be generated at this point, + -- its declaration is appended to Decls. + + procedure Build_To_Any_Function + (Loc : Source_Ptr; + Typ : Entity_Id; + Decl : out Node_Id; + Fnam : out Entity_Id); + -- Build To_Any attribute function for Typ. Loc is the reference + -- location for generated nodes, Typ is the type for which the + -- conversion function is generated. On return, Decl and Fnam contain + -- the declaration and entity for the newly-created function. + + function Build_TypeCode_Call + (Loc : Source_Ptr; + Typ : Entity_Id; + Decls : List_Id) return Node_Id; + -- Build call to TypeCode attribute function for Typ. Decls is the + -- declarations list for an appropriate enclosing scope of the point + -- where the call will be inserted; if the To_Any attribute for Typ + -- needs to be generated at this point, its declaration is appended + -- to Decls. + + procedure Build_TypeCode_Function + (Loc : Source_Ptr; + Typ : Entity_Id; + Decl : out Node_Id; + Fnam : out Entity_Id); + -- Build TypeCode attribute function for Typ. Loc is the reference + -- location for generated nodes, Typ is the type for which the + -- conversion function is generated. On return, Decl and Fnam contain + -- the declaration and entity for the newly-created function. + + procedure Build_Name_And_Repository_Id + (E : Entity_Id; + Name_Str : out String_Id; + Repo_Id_Str : out String_Id); + -- In the PolyORB distribution model, each distributed object type + -- and each distributed operation has a globally unique identifier, + -- its Repository Id. This subprogram builds and returns two strings + -- for entity E (a distributed object type or operation): one + -- containing the name of E, the second containing its repository id. + + end Helpers; + end PolyORB_Support; ------------------------------------ @@ -616,6 +833,99 @@ package body Exp_Dist is end loop; end Add_Calling_Stubs_To_Declarations; + ----------------------------- + -- Add_Parameter_To_NVList -- + ----------------------------- + + function Add_Parameter_To_NVList + (Loc : Source_Ptr; + NVList : Entity_Id; + Parameter : Entity_Id; + Constrained : Boolean; + RACW_Ctrl : Boolean := False; + Any : Entity_Id) return Node_Id + is + Parameter_Name_String : String_Id; + Parameter_Mode : Node_Id; + + function Parameter_Passing_Mode + (Loc : Source_Ptr; + Parameter : Entity_Id; + Constrained : Boolean) return Node_Id; + -- Return an expression that denotes the parameter passing + -- mode to be used for Parameter in distribution stubs, + -- where Constrained is Parameter's constrained status. + + ---------------------------- + -- Parameter_Passing_Mode -- + ---------------------------- + + function Parameter_Passing_Mode + (Loc : Source_Ptr; + Parameter : Entity_Id; + Constrained : Boolean) return Node_Id + is + Lib_RE : RE_Id; + + begin + if Out_Present (Parameter) then + if In_Present (Parameter) + or else not Constrained + then + -- Unconstrained formals must be translated + -- to 'in' or 'inout', not 'out', because + -- they need to be constrained by the actual. + + Lib_RE := RE_Mode_Inout; + else + Lib_RE := RE_Mode_Out; + end if; + + else + Lib_RE := RE_Mode_In; + end if; + + return New_Occurrence_Of (RTE (Lib_RE), Loc); + end Parameter_Passing_Mode; + + -- Start of processing for Add_Parameter_To_NVList + + begin + if Nkind (Parameter) = N_Defining_Identifier then + Get_Name_String (Chars (Parameter)); + else + Get_Name_String (Chars (Defining_Identifier + (Parameter))); + end if; + + Parameter_Name_String := String_From_Name_Buffer; + + if RACW_Ctrl then + Parameter_Mode := New_Occurrence_Of + (RTE (RE_Mode_In), Loc); + else + Parameter_Mode := Parameter_Passing_Mode (Loc, + Parameter, Constrained); + end if; + + return + Make_Procedure_Call_Statement (Loc, + Name => + New_Occurrence_Of + (RTE (RE_NVList_Add_Item), Loc), + Parameter_Associations => New_List ( + New_Occurrence_Of (NVList, Loc), + Make_Function_Call (Loc, + Name => + New_Occurrence_Of + (RTE (RE_To_PolyORB_String), Loc), + Parameter_Associations => New_List ( + Make_String_Literal (Loc, + Strval => Parameter_Name_String))), + New_Occurrence_Of (Any, Loc), + Parameter_Mode)); + end Add_Parameter_To_NVList; + -------------------------------- -- Add_RACW_Asynchronous_Flag -- -------------------------------- @@ -658,10 +968,10 @@ package body Exp_Dist is Same_Scope : constant Boolean := Scope (Desig) = Scope (RACW_Type); - Stub_Type : Entity_Id; - Stub_Type_Access : Entity_Id; - RPC_Receiver_Decl : Node_Id; - Existing : Boolean; + Stub_Type : Entity_Id; + Stub_Type_Access : Entity_Id; + RPC_Receiver_Decl : Node_Id; + Existing : Boolean; begin if not Expander_Active then @@ -738,7 +1048,7 @@ package body Exp_Dist is Insertion_Node : Node_Id; Decls : List_Id) is - -- Set sloc of generated declaration copy of insertion node sloc, so + -- Set Sloc of generated declaration copy of insertion node Sloc, so -- the declarations are recognized as belonging to the current package. Loc : constant Source_Ptr := Sloc (Insertion_Node); @@ -752,7 +1062,7 @@ package body Exp_Dist is Current_Insertion_Node : Node_Id := Insertion_Node; - RPC_Receiver : Entity_Id; + RPC_Receiver : Entity_Id; RPC_Receiver_Statements : List_Id; RPC_Receiver_Case_Alternatives : constant List_Id := New_List; RPC_Receiver_Stream : Entity_Id; @@ -798,7 +1108,6 @@ package body Exp_Dist is -- receiver for this type. if Present (Primitive_Operations (Designated_Type)) then - Overload_Counter_Table.Reset; Current_Primitive_Elmt := @@ -991,12 +1300,13 @@ package body Exp_Dist is -- Start of processing for Add_RAS_Dereference_TSS begin - -- The Dereference TSS for a remote access-to-subprogram type -- has the form: - -- [function|procedure] ras_typeRD (RAS_Value, <RAS_Parameters>) - -- [return <>] - -- and is called whenever a value of a RAS type is dereferenced. + + -- [function|procedure] ras_typeRD (RAS_Value, <RAS_Parameters>) + -- [return <>] + + -- This is called whenever a value of a RAS type is dereferenced -- First construct a list of parameter specifications: @@ -1254,12 +1564,11 @@ package body Exp_Dist is Formal := First (Parameter_Specifications (Subp_Decl_Spec)); pragma Assert (Present (Formal)); - Next (Formal); - - while Present (Formal) loop - Append_To (Actuals, New_Occurrence_Of ( - Defining_Identifier (Formal), Loc)); + loop Next (Formal); + exit when No (Formal); + Append_To (Actuals, + New_Occurrence_Of (Defining_Identifier (Formal), Loc)); end loop; -- O : aliased subpP; @@ -1426,9 +1735,7 @@ package body Exp_Dist is Append_To (RPC_Receiver_Cases, Make_Case_Statement_Alternative (Loc, Discrete_Choices => - New_List ( - Make_Integer_Literal (Loc, Subprogram_Number)), - + New_List (Make_Integer_Literal (Loc, Subprogram_Number)), Statements => New_List ( Make_Procedure_Call_Statement (Loc, @@ -1692,7 +1999,7 @@ package body Exp_Dist is Analyze (Last (Decls)); Append_To (Decls, Pkg_RPC_Receiver_Body); - Analyze (Pkg_RPC_Receiver_Body); + Analyze (Last (Decls)); -- Construction of the dummy package used to register the package -- receiving stubs on the nameserver. @@ -1787,15 +2094,8 @@ package body Exp_Dist is Stub_Elements : constant Stub_Structure := Stubs_Table.Get (Designated_Type); - - Stub_Type_Declaration : Node_Id; - Stub_Type_Access_Declaration : Node_Id; - - Object_RPC_Receiver : Entity_Id; - RPC_Receiver_Stream : Entity_Id; - RPC_Receiver_Result : Entity_Id; - - Is_RAS : constant Boolean := not Comes_From_Source (RACW_Type); + Stub_Type_Decl : Node_Id; + Stub_Type_Access_Decl : Node_Id; begin if Stub_Elements /= Empty_Stub_Structure then @@ -1806,71 +2106,31 @@ package body Exp_Dist is return; end if; - Existing := False; - Stub_Type := + Existing := False; + Stub_Type := Make_Defining_Identifier (Loc, New_Internal_Name ('S')); - Stub_Type_Access := - Make_Defining_Identifier (Loc, New_Internal_Name ('S')); - Object_RPC_Receiver := - Make_Defining_Identifier (Loc, New_Internal_Name ('P')); - RPC_Receiver_Stream := - Make_Defining_Identifier (Loc, Name_S); - RPC_Receiver_Result := - Make_Defining_Identifier (Loc, Name_R); - - -- The stub type definition below must match exactly the one in - -- s-parint.ads, since unchecked conversions will be used in - -- s-parint.adb to modify pointers passed to Get_Unique_Remote_Pointer. - - Stub_Type_Declaration := - Make_Full_Type_Declaration (Loc, - Defining_Identifier => Stub_Type, - Type_Definition => - Make_Record_Definition (Loc, - Tagged_Present => True, - Limited_Present => True, - Component_List => - Make_Component_List (Loc, - Component_Items => New_List ( - - Make_Component_Declaration (Loc, - Defining_Identifier => - Make_Defining_Identifier (Loc, Name_Origin), - Component_Definition => - Make_Component_Definition (Loc, - Aliased_Present => False, - Subtype_Indication => - New_Occurrence_Of (RTE (RE_Partition_ID), Loc))), + Stub_Type_Access := + Make_Defining_Identifier (Loc, + New_External_Name ( + Related_Id => Chars (Stub_Type), + Suffix => 'A')); - Make_Component_Declaration (Loc, - Defining_Identifier => - Make_Defining_Identifier (Loc, Name_Receiver), - Component_Definition => - Make_Component_Definition (Loc, - Aliased_Present => False, - Subtype_Indication => - New_Occurrence_Of (RTE (RE_Unsigned_64), Loc))), + Specific_Build_Stub_Type ( + RACW_Type, Stub_Type, + Stub_Type_Decl, RPC_Receiver_Decl); - Make_Component_Declaration (Loc, - Defining_Identifier => - Make_Defining_Identifier (Loc, Name_Addr), - Component_Definition => - Make_Component_Definition (Loc, - Aliased_Present => False, - Subtype_Indication => - New_Occurrence_Of (RTE (RE_Unsigned_64), Loc))), - - Make_Component_Declaration (Loc, - Defining_Identifier => - Make_Defining_Identifier (Loc, Name_Asynchronous), - Component_Definition => - Make_Component_Definition (Loc, - Aliased_Present => False, - Subtype_Indication => - New_Occurrence_Of (Standard_Boolean, Loc))))))); + Stub_Type_Access_Decl := + Make_Full_Type_Declaration (Loc, + Defining_Identifier => Stub_Type_Access, + Type_Definition => + Make_Access_To_Object_Definition (Loc, + All_Present => True, + Subtype_Indication => New_Occurrence_Of (Stub_Type, Loc))); - Append_To (Decls, Stub_Type_Declaration); - Analyze (Stub_Type_Declaration); + Append_To (Decls, Stub_Type_Decl); + Analyze (Last (Decls)); + Append_To (Decls, Stub_Type_Access_Decl); + Analyze (Last (Decls)); -- This is in no way a type derivation, but we fake it to make -- sure that the dispatching table gets built with the corresponding @@ -1879,27 +2139,12 @@ package body Exp_Dist is Derive_Subprograms (Parent_Type => Designated_Type, Derived_Type => Stub_Type); - Stub_Type_Access_Declaration := - Make_Full_Type_Declaration (Loc, - Defining_Identifier => Stub_Type_Access, - Type_Definition => - Make_Access_To_Object_Definition (Loc, - All_Present => True, - Subtype_Indication => New_Occurrence_Of (Stub_Type, Loc))); - - Append_To (Decls, Stub_Type_Access_Declaration); - Analyze (Stub_Type_Access_Declaration); - - if not Is_RAS then - Append_To (Decls, - Make_Subprogram_Declaration (Loc, - Build_RPC_Receiver_Specification ( - RPC_Receiver => Object_RPC_Receiver, - Stream_Parameter => RPC_Receiver_Stream, - Result_Parameter => RPC_Receiver_Result))); + if Present (RPC_Receiver_Decl) then + Append_To (Decls, RPC_Receiver_Decl); + else + RPC_Receiver_Decl := Last (Decls); end if; - RPC_Receiver_Decl := Last (Decls); Stubs_Table.Set (Designated_Type, (Stub_Type => Stub_Type, Stub_Type_Access => Stub_Type_Access, @@ -1942,454 +2187,6 @@ package body Exp_Dist is Subprogram_Identifiers'(Str_Identifier => Id, Int_Identifier => Spn)); end Assign_Subprogram_Identifier; - --------------------------------- - -- Build_General_Calling_Stubs -- - --------------------------------- - - procedure Build_General_Calling_Stubs - (Decls : List_Id; - Statements : List_Id; - Target_Partition : Entity_Id; - RPC_Receiver : Node_Id; - Subprogram_Id : Node_Id; - Asynchronous : Node_Id := Empty; - Is_Known_Asynchronous : Boolean := False; - Is_Known_Non_Asynchronous : Boolean := False; - Is_Function : Boolean; - Spec : Node_Id; - Stub_Type : Entity_Id := Empty; - RACW_Type : Entity_Id := Empty; - Nod : Node_Id) - is - Loc : constant Source_Ptr := Sloc (Nod); - - Stream_Parameter : Node_Id; - -- Name of the stream used to transmit parameters to the remote package - - Result_Parameter : Node_Id; - -- Name of the result parameter (in non-APC cases) which get the - -- result of the remote subprogram. - - Exception_Return_Parameter : Node_Id; - -- Name of the parameter which will hold the exception sent by the - -- remote subprogram. - - Current_Parameter : Node_Id; - -- Current parameter being handled - - Ordered_Parameters_List : constant List_Id := - Build_Ordered_Parameters_List (Spec); - - Asynchronous_Statements : List_Id := No_List; - Non_Asynchronous_Statements : List_Id := No_List; - -- Statements specifics to the Asynchronous/Non-Asynchronous cases - - Extra_Formal_Statements : constant List_Id := New_List; - -- List of statements for extra formal parameters. It will appear after - -- the regular statements for writing out parameters. - - pragma Warnings (Off); - pragma Unreferenced (RACW_Type); - -- Used only for the PolyORB case - pragma Warnings (On); - - begin - -- The general form of a calling stub for a given subprogram is: - - -- procedure X (...) is - -- P : constant Partition_ID := RCI_Cache.Get_Active_Partition_ID; - -- Stream, Result : aliased System.RPC.Params_Stream_Type (0); - -- begin - -- Put_Package_RPC_Receiver_In_Stream; (the package RPC receiver - -- comes from RCI_Cache.Get_RCI_Package_Receiver) - -- Put_Subprogram_Id_In_Stream; - -- Put_Parameters_In_Stream; - -- Do_RPC (Stream, Result); - -- Read_Exception_Occurrence_From_Result; Raise_It; - -- Read_Out_Parameters_And_Function_Return_From_Stream; - -- end X; - - -- There are some variations: Do_APC is called for an asynchronous - -- procedure and the part after the call is completely ommitted - -- as well as the declaration of Result. For a function call, - -- 'Input is always used to read the result even if it is constrained. - - Stream_Parameter := - Make_Defining_Identifier (Loc, New_Internal_Name ('S')); - - Append_To (Decls, - Make_Object_Declaration (Loc, - Defining_Identifier => Stream_Parameter, - Aliased_Present => True, - Object_Definition => - Make_Subtype_Indication (Loc, - Subtype_Mark => - New_Occurrence_Of (RTE (RE_Params_Stream_Type), Loc), - Constraint => - Make_Index_Or_Discriminant_Constraint (Loc, - Constraints => - New_List (Make_Integer_Literal (Loc, 0)))))); - - if not Is_Known_Asynchronous then - Result_Parameter := - Make_Defining_Identifier (Loc, New_Internal_Name ('R')); - - Append_To (Decls, - Make_Object_Declaration (Loc, - Defining_Identifier => Result_Parameter, - Aliased_Present => True, - Object_Definition => - Make_Subtype_Indication (Loc, - Subtype_Mark => - New_Occurrence_Of (RTE (RE_Params_Stream_Type), Loc), - Constraint => - Make_Index_Or_Discriminant_Constraint (Loc, - Constraints => - New_List (Make_Integer_Literal (Loc, 0)))))); - - Exception_Return_Parameter := - Make_Defining_Identifier (Loc, New_Internal_Name ('E')); - - Append_To (Decls, - Make_Object_Declaration (Loc, - Defining_Identifier => Exception_Return_Parameter, - Object_Definition => - New_Occurrence_Of (RTE (RE_Exception_Occurrence), Loc))); - - else - Result_Parameter := Empty; - Exception_Return_Parameter := Empty; - end if; - - -- Put first the RPC receiver corresponding to the remote package - - Append_To (Statements, - Make_Attribute_Reference (Loc, - Prefix => - New_Occurrence_Of (RTE (RE_Unsigned_64), Loc), - Attribute_Name => Name_Write, - Expressions => New_List ( - Make_Attribute_Reference (Loc, - Prefix => - New_Occurrence_Of (Stream_Parameter, Loc), - Attribute_Name => - Name_Access), - RPC_Receiver))); - - -- Then put the Subprogram_Id of the subprogram we want to call in - -- the stream. - - Append_To (Statements, - Make_Attribute_Reference (Loc, - Prefix => - New_Occurrence_Of (RTE (RE_Subprogram_Id), Loc), - Attribute_Name => - Name_Write, - Expressions => New_List ( - Make_Attribute_Reference (Loc, - Prefix => - New_Occurrence_Of (Stream_Parameter, Loc), - Attribute_Name => Name_Access), - Subprogram_Id))); - - Current_Parameter := First (Ordered_Parameters_List); - while Present (Current_Parameter) loop - declare - Typ : constant Node_Id := - Parameter_Type (Current_Parameter); - Etyp : Entity_Id; - Constrained : Boolean; - Value : Node_Id; - Extra_Parameter : Entity_Id; - - begin - if Is_RACW_Controlling_Formal (Current_Parameter, Stub_Type) then - - -- In the case of a controlling formal argument, we marshall - -- its addr field rather than the local stub. - - Append_To (Statements, - Pack_Node_Into_Stream (Loc, - Stream => Stream_Parameter, - Object => - Make_Selected_Component (Loc, - Prefix => - New_Occurrence_Of ( - Defining_Identifier (Current_Parameter), Loc), - Selector_Name => - Make_Identifier (Loc, Name_Addr)), - Etyp => RTE (RE_Unsigned_64))); - - else - Value := New_Occurrence_Of - (Defining_Identifier (Current_Parameter), Loc); - - -- Access type parameters are transmitted as in out - -- parameters. However, a dereference is needed so that - -- we marshall the designated object. - - if Nkind (Typ) = N_Access_Definition then - Value := Make_Explicit_Dereference (Loc, Value); - Etyp := Etype (Subtype_Mark (Typ)); - else - Etyp := Etype (Typ); - end if; - - Constrained := - Is_Constrained (Etyp) or else Is_Elementary_Type (Etyp); - - -- Any parameter but unconstrained out parameters are - -- transmitted to the peer. - - if In_Present (Current_Parameter) - or else not Out_Present (Current_Parameter) - or else not Constrained - then - Append_To (Statements, - Make_Attribute_Reference (Loc, - Prefix => - New_Occurrence_Of (Etyp, Loc), - Attribute_Name => Output_From_Constrained (Constrained), - Expressions => New_List ( - Make_Attribute_Reference (Loc, - Prefix => - New_Occurrence_Of (Stream_Parameter, Loc), - Attribute_Name => Name_Access), - Value))); - end if; - end if; - - -- If the current parameter has a dynamic constrained status, - -- then this status is transmitted as well. - -- This should be done for accessibility as well ??? - - if Nkind (Typ) /= N_Access_Definition - and then Need_Extra_Constrained (Current_Parameter) - then - -- In this block, we do not use the extra formal that has been - -- created because it does not exist at the time of expansion - -- when building calling stubs for remote access to subprogram - -- types. We create an extra variable of this type and push it - -- in the stream after the regular parameters. - - Extra_Parameter := Make_Defining_Identifier - (Loc, New_Internal_Name ('P')); - - Append_To (Decls, - Make_Object_Declaration (Loc, - Defining_Identifier => Extra_Parameter, - Constant_Present => True, - Object_Definition => - New_Occurrence_Of (Standard_Boolean, Loc), - Expression => - Make_Attribute_Reference (Loc, - Prefix => - New_Occurrence_Of ( - Defining_Identifier (Current_Parameter), Loc), - Attribute_Name => Name_Constrained))); - - Append_To (Extra_Formal_Statements, - Make_Attribute_Reference (Loc, - Prefix => - New_Occurrence_Of (Standard_Boolean, Loc), - Attribute_Name => - Name_Write, - Expressions => New_List ( - Make_Attribute_Reference (Loc, - Prefix => - New_Occurrence_Of (Stream_Parameter, Loc), - Attribute_Name => - Name_Access), - New_Occurrence_Of (Extra_Parameter, Loc)))); - end if; - - Next (Current_Parameter); - end; - end loop; - - -- Append the formal statements list to the statements - - Append_List_To (Statements, Extra_Formal_Statements); - - if not Is_Known_Non_Asynchronous then - - -- Build the call to System.RPC.Do_APC - - Asynchronous_Statements := New_List ( - Make_Procedure_Call_Statement (Loc, - Name => - New_Occurrence_Of (RTE (RE_Do_Apc), Loc), - Parameter_Associations => New_List ( - New_Occurrence_Of (Target_Partition, Loc), - Make_Attribute_Reference (Loc, - Prefix => - New_Occurrence_Of (Stream_Parameter, Loc), - Attribute_Name => - Name_Access)))); - else - Asynchronous_Statements := No_List; - end if; - - if not Is_Known_Asynchronous then - - -- Build the call to System.RPC.Do_RPC - - Non_Asynchronous_Statements := New_List ( - Make_Procedure_Call_Statement (Loc, - Name => - New_Occurrence_Of (RTE (RE_Do_Rpc), Loc), - Parameter_Associations => New_List ( - New_Occurrence_Of (Target_Partition, Loc), - - Make_Attribute_Reference (Loc, - Prefix => - New_Occurrence_Of (Stream_Parameter, Loc), - Attribute_Name => - Name_Access), - - Make_Attribute_Reference (Loc, - Prefix => - New_Occurrence_Of (Result_Parameter, Loc), - Attribute_Name => - Name_Access)))); - - -- Read the exception occurrence from the result stream and - -- reraise it. It does no harm if this is a Null_Occurrence since - -- this does nothing. - - Append_To (Non_Asynchronous_Statements, - Make_Attribute_Reference (Loc, - Prefix => - New_Occurrence_Of (RTE (RE_Exception_Occurrence), Loc), - - Attribute_Name => - Name_Read, - - Expressions => New_List ( - Make_Attribute_Reference (Loc, - Prefix => - New_Occurrence_Of (Result_Parameter, Loc), - Attribute_Name => - Name_Access), - New_Occurrence_Of (Exception_Return_Parameter, Loc)))); - - Append_To (Non_Asynchronous_Statements, - Make_Procedure_Call_Statement (Loc, - Name => - New_Occurrence_Of (RTE (RE_Reraise_Occurrence), Loc), - Parameter_Associations => New_List ( - New_Occurrence_Of (Exception_Return_Parameter, Loc)))); - - if Is_Function then - - -- If this is a function call, then read the value and return - -- it. The return value is written/read using 'Output/'Input. - - Append_To (Non_Asynchronous_Statements, - Make_Tag_Check (Loc, - Make_Return_Statement (Loc, - Expression => - Make_Attribute_Reference (Loc, - Prefix => - New_Occurrence_Of ( - Etype (Subtype_Mark (Spec)), Loc), - - Attribute_Name => Name_Input, - - Expressions => New_List ( - Make_Attribute_Reference (Loc, - Prefix => - New_Occurrence_Of (Result_Parameter, Loc), - Attribute_Name => Name_Access)))))); - - else - -- Loop around parameters and assign out (or in out) parameters. - -- In the case of RACW, controlling arguments cannot possibly - -- have changed since they are remote, so we do not read them - -- from the stream. - - Current_Parameter := First (Ordered_Parameters_List); - while Present (Current_Parameter) loop - declare - Typ : constant Node_Id := - Parameter_Type (Current_Parameter); - Etyp : Entity_Id; - Value : Node_Id; - - begin - Value := - New_Occurrence_Of - (Defining_Identifier (Current_Parameter), Loc); - - if Nkind (Typ) = N_Access_Definition then - Value := Make_Explicit_Dereference (Loc, Value); - Etyp := Etype (Subtype_Mark (Typ)); - else - Etyp := Etype (Typ); - end if; - - if (Out_Present (Current_Parameter) - or else Nkind (Typ) = N_Access_Definition) - and then Etyp /= Stub_Type - then - Append_To (Non_Asynchronous_Statements, - Make_Attribute_Reference (Loc, - Prefix => - New_Occurrence_Of (Etyp, Loc), - - Attribute_Name => Name_Read, - - Expressions => New_List ( - Make_Attribute_Reference (Loc, - Prefix => - New_Occurrence_Of (Result_Parameter, Loc), - Attribute_Name => - Name_Access), - Value))); - end if; - end; - - Next (Current_Parameter); - end loop; - end if; - end if; - - if Is_Known_Asynchronous then - Append_List_To (Statements, Asynchronous_Statements); - - elsif Is_Known_Non_Asynchronous then - Append_List_To (Statements, Non_Asynchronous_Statements); - - else - pragma Assert (Present (Asynchronous)); - Prepend_To (Asynchronous_Statements, - Make_Attribute_Reference (Loc, - Prefix => New_Occurrence_Of (Standard_Boolean, Loc), - Attribute_Name => Name_Write, - Expressions => New_List ( - Make_Attribute_Reference (Loc, - Prefix => New_Occurrence_Of (Stream_Parameter, Loc), - Attribute_Name => Name_Access), - New_Occurrence_Of (Standard_True, Loc)))); - - Prepend_To (Non_Asynchronous_Statements, - Make_Attribute_Reference (Loc, - Prefix => New_Occurrence_Of (Standard_Boolean, Loc), - Attribute_Name => Name_Write, - Expressions => New_List ( - Make_Attribute_Reference (Loc, - Prefix => New_Occurrence_Of (Stream_Parameter, Loc), - Attribute_Name => Name_Access), - New_Occurrence_Of (Standard_False, Loc)))); - - Append_To (Statements, - Make_Implicit_If_Statement (Nod, - Condition => Asynchronous, - Then_Statements => Asynchronous_Statements, - Else_Statements => Non_Asynchronous_Statements)); - end if; - end Build_General_Calling_Stubs; - ------------------------------ -- Build_Get_Unique_RP_Call -- ------------------------------ @@ -2577,7 +2374,7 @@ package body Exp_Dist is ----------------------------- procedure Build_RPC_Receiver_Body - (RPC_Receiver : Entity_Id; + (RPC_Receiver : Entity_Id; Stream : out Entity_Id; Result : out Entity_Id; Subp_Id : out Entity_Id; @@ -2588,20 +2385,18 @@ package body Exp_Dist is RPC_Receiver_Spec : Node_Id; RPC_Receiver_Decls : List_Id; + begin - Stream := - Make_Defining_Identifier (Loc, Name_S); - Result := - Make_Defining_Identifier (Loc, Name_R); + Stream := Make_Defining_Identifier (Loc, Name_S); + Result := Make_Defining_Identifier (Loc, Name_R); RPC_Receiver_Spec := - Build_RPC_Receiver_Specification + GARLIC_Support.Build_RPC_Receiver_Specification (RPC_Receiver => RPC_Receiver, Stream_Parameter => Stream, Result_Parameter => Result); - Subp_Id := - Make_Defining_Identifier (Loc, New_Internal_Name ('P')); + Subp_Id := Make_Defining_Identifier (Loc, New_Internal_Name ('P')); -- Subp_Id may not be a constant, because in the case of the RPC -- receiver for an RCI package, when a call is received from a RAS @@ -2631,38 +2426,6 @@ package body Exp_Dist is Statements => Stmts)); end Build_RPC_Receiver_Body; - -------------------------------------- - -- Build_RPC_Receiver_Specification -- - -------------------------------------- - - function Build_RPC_Receiver_Specification - (RPC_Receiver : Entity_Id; - Stream_Parameter : Entity_Id; - Result_Parameter : Entity_Id) return Node_Id - is - Loc : constant Source_Ptr := Sloc (RPC_Receiver); - - begin - return - Make_Procedure_Specification (Loc, - Defining_Unit_Name => RPC_Receiver, - Parameter_Specifications => New_List ( - Make_Parameter_Specification (Loc, - Defining_Identifier => Stream_Parameter, - Parameter_Type => - Make_Access_Definition (Loc, - Subtype_Mark => - New_Occurrence_Of (RTE (RE_Params_Stream_Type), Loc))), - - Make_Parameter_Specification (Loc, - Defining_Identifier => Result_Parameter, - Parameter_Type => - Make_Access_Definition (Loc, - Subtype_Mark => - New_Occurrence_Of - (RTE (RE_Params_Stream_Type), Loc))))); - end Build_RPC_Receiver_Specification; - ------------------------------------ -- Build_Subprogram_Calling_Stubs -- ------------------------------------ @@ -2679,9 +2442,6 @@ package body Exp_Dist is is Loc : constant Source_Ptr := Sloc (Vis_Decl); - Target_Partition : Node_Id; - -- Contains the name of the target partition - Decls : constant List_Id := New_List; Statements : constant List_Id := New_List; @@ -2689,7 +2449,6 @@ package body Exp_Dist is -- The specification of the body Controlling_Parameter : Entity_Id := Empty; - RPC_Receiver : Node_Id; Asynchronous_Expr : Node_Id := Empty; @@ -2708,51 +2467,37 @@ package body Exp_Dist is procedure Insert_Partition_Check (Parameter : Node_Id) is Parameter_Entity : constant Entity_Id := Defining_Identifier (Parameter); - - Condition : Node_Id; - begin -- The expression that will be built is of the form: - -- if not (Parameter in Stub_Type and then - -- Parameter.Origin = Controlling.Origin) - -- then + + -- if not Same_Partition (Parameter, Controlling_Parameter) then -- raise Constraint_Error; -- end if; - -- Condition contains the reversed condition. We do not check that - -- Parameter is in Stub_Type since such a check has been inserted - -- at the point of call already (a tag check since we have multiple - -- controlling operands). - - Condition := - Make_Op_Eq (Loc, - Left_Opnd => - Make_Selected_Component (Loc, - Prefix => - New_Occurrence_Of (Parameter_Entity, Loc), - Selector_Name => - Make_Identifier (Loc, Name_Origin)), - - Right_Opnd => - Make_Selected_Component (Loc, - Prefix => - New_Occurrence_Of (Controlling_Parameter, Loc), - Selector_Name => - Make_Identifier (Loc, Name_Origin))); + -- We do not check that Parameter is in Stub_Type since such a check + -- has been inserted at the point of call already (a tag check since + -- we have multiple controlling operands). Append_To (Decls, Make_Raise_Constraint_Error (Loc, Condition => - Make_Op_Not (Loc, Right_Opnd => Condition), + Make_Op_Not (Loc, + Right_Opnd => + Make_Function_Call (Loc, + Name => + New_Occurrence_Of (RTE (RE_Same_Partition), Loc), + Parameter_Associations => + New_List ( + Unchecked_Convert_To (RTE (RE_RACW_Stub_Type_Access), + New_Occurrence_Of (Parameter_Entity, Loc)), + Unchecked_Convert_To (RTE (RE_RACW_Stub_Type_Access), + New_Occurrence_Of (Controlling_Parameter, Loc))))), Reason => CE_Partition_Check_Failed)); end Insert_Partition_Check; -- Start of processing for Build_Subprogram_Calling_Stubs begin - Target_Partition := - Make_Defining_Identifier (Loc, New_Internal_Name ('P')); - Subp_Spec := Copy_Specification (Loc, Spec => Specification (Vis_Decl), New_Name => New_Name); @@ -2793,53 +2538,7 @@ package body Exp_Dist is end; end if; - if Present (Stub_Type) then - pragma Assert (Present (Controlling_Parameter)); - - Append_To (Decls, - Make_Object_Declaration (Loc, - Defining_Identifier => Target_Partition, - Constant_Present => True, - Object_Definition => - New_Occurrence_Of (RTE (RE_Partition_ID), Loc), - - Expression => - Make_Selected_Component (Loc, - Prefix => - New_Occurrence_Of (Controlling_Parameter, Loc), - Selector_Name => - Make_Identifier (Loc, Name_Origin)))); - - RPC_Receiver := - Make_Selected_Component (Loc, - Prefix => - New_Occurrence_Of (Controlling_Parameter, Loc), - Selector_Name => - Make_Identifier (Loc, Name_Receiver)); - - else - Append_To (Decls, - Make_Object_Declaration (Loc, - Defining_Identifier => Target_Partition, - Constant_Present => True, - Object_Definition => - New_Occurrence_Of (RTE (RE_Partition_ID), Loc), - - Expression => - Make_Function_Call (Loc, - Name => Make_Selected_Component (Loc, - Prefix => - Make_Identifier (Loc, Chars (RCI_Locator)), - Selector_Name => - Make_Identifier (Loc, Name_Get_Active_Partition_ID))))); - - RPC_Receiver := - Make_Selected_Component (Loc, - Prefix => - Make_Identifier (Loc, Chars (RCI_Locator)), - Selector_Name => - Make_Identifier (Loc, Name_Get_RCI_Package_Receiver)); - end if; + pragma Assert (No (Stub_Type) or else Present (Controlling_Parameter)); if Dynamically_Asynchronous then Asynchronous_Expr := @@ -2850,11 +2549,11 @@ package body Exp_Dist is Make_Identifier (Loc, Name_Asynchronous)); end if; - Build_General_Calling_Stubs + Specific_Build_General_Calling_Stubs (Decls => Decls, Statements => Statements, - Target_Partition => Target_Partition, - RPC_Receiver => RPC_Receiver, + Target => Specific_Build_Stub_Target (Loc, + Decls, RCI_Locator, Controlling_Parameter), Subprogram_Id => Subp_Id, Asynchronous => Asynchronous_Expr, Is_Known_Asynchronous => Asynchronous @@ -3476,6 +3175,32 @@ package body Exp_Dist is return True; end Could_Be_Asynchronous; + --------------------------- + -- Declare_Create_NVList -- + --------------------------- + + procedure Declare_Create_NVList + (Loc : Source_Ptr; + NVList : Entity_Id; + Decls : List_Id; + Stmts : List_Id) + is + begin + Append_To (Decls, + Make_Object_Declaration (Loc, + Defining_Identifier => NVList, + Aliased_Present => False, + Object_Definition => + New_Occurrence_Of (RTE (RE_NVList_Ref), Loc))); + + Append_To (Stmts, + Make_Procedure_Call_Statement (Loc, + Name => + New_Occurrence_Of (RTE (RE_NVList_Create), Loc), + Parameter_Associations => New_List ( + New_Occurrence_Of (NVList, Loc)))); + end Declare_Create_NVList; + --------------------------------------------- -- Expand_All_Calls_Remote_Subprogram_Call -- --------------------------------------------- @@ -3554,7 +3279,6 @@ package body Exp_Dist is procedure Expand_Calling_Stubs_Bodies (Unit_Node : Node_Id) is Spec : constant Node_Id := Specification (Unit_Node); Decls : constant List_Id := Visible_Declarations (Spec); - begin New_Scope (Scope_Of_Spec (Spec)); Add_Calling_Stubs_To_Declarations @@ -3988,8 +3712,7 @@ package body Exp_Dist is Make_Identifier (Loc, Name_Addr)), Etyp => RTE (RE_Unsigned_64))); - -- Build the code fragment corresponding to the marshalling of a null - -- object. + -- Build code fragment corresponding to marshalling of a null object Null_Statements := New_List ( @@ -4336,6 +4059,635 @@ package body Exp_Dist is Add_RAS_Access_TSS (Vis_Decl); end Add_RAST_Features; + --------------------------------- + -- Build_General_Calling_Stubs -- + --------------------------------- + + procedure Build_General_Calling_Stubs + (Decls : List_Id; + Statements : List_Id; + Target_Partition : Entity_Id; + Target_RPC_Receiver : Node_Id; + Subprogram_Id : Node_Id; + Asynchronous : Node_Id := Empty; + Is_Known_Asynchronous : Boolean := False; + Is_Known_Non_Asynchronous : Boolean := False; + Is_Function : Boolean; + Spec : Node_Id; + Stub_Type : Entity_Id := Empty; + RACW_Type : Entity_Id := Empty; + Nod : Node_Id) + is + Loc : constant Source_Ptr := Sloc (Nod); + + Stream_Parameter : Node_Id; + -- Name of the stream used to transmit parameters to the + -- remote package. + + Result_Parameter : Node_Id; + -- Name of the result parameter (in non-APC cases) which get the + -- result of the remote subprogram. + + Exception_Return_Parameter : Node_Id; + -- Name of the parameter which will hold the exception sent by the + -- remote subprogram. + + Current_Parameter : Node_Id; + -- Current parameter being handled + + Ordered_Parameters_List : constant List_Id := + Build_Ordered_Parameters_List (Spec); + + Asynchronous_Statements : List_Id := No_List; + Non_Asynchronous_Statements : List_Id := No_List; + -- Statements specifics to the Asynchronous/Non-Asynchronous cases + + Extra_Formal_Statements : constant List_Id := New_List; + -- List of statements for extra formal parameters. It will appear + -- after the regular statements for writing out parameters. + + pragma Warnings (Off); + pragma Unreferenced (RACW_Type); + -- Used only for the PolyORB case + pragma Warnings (On); + + begin + -- The general form of a calling stub for a given subprogram is: + + -- procedure X (...) is P : constant Partition_ID := + -- RCI_Cache.Get_Active_Partition_ID; Stream, Result : aliased + -- System.RPC.Params_Stream_Type (0); begin + -- Put_Package_RPC_Receiver_In_Stream; (the package RPC receiver + -- comes from RCI_Cache.Get_RCI_Package_Receiver) + -- Put_Subprogram_Id_In_Stream; Put_Parameters_In_Stream; Do_RPC + -- (Stream, Result); Read_Exception_Occurrence_From_Result; + -- Raise_It; + -- Read_Out_Parameters_And_Function_Return_From_Stream; end X; + + -- There are some variations: Do_APC is called for an asynchronous + -- procedure and the part after the call is completely ommitted as + -- well as the declaration of Result. For a function call, 'Input is + -- always used to read the result even if it is constrained. + + Stream_Parameter := + Make_Defining_Identifier (Loc, New_Internal_Name ('S')); + + Append_To (Decls, + Make_Object_Declaration (Loc, + Defining_Identifier => Stream_Parameter, + Aliased_Present => True, + Object_Definition => + Make_Subtype_Indication (Loc, + Subtype_Mark => + New_Occurrence_Of (RTE (RE_Params_Stream_Type), Loc), + Constraint => + Make_Index_Or_Discriminant_Constraint (Loc, + Constraints => + New_List (Make_Integer_Literal (Loc, 0)))))); + + if not Is_Known_Asynchronous then + Result_Parameter := + Make_Defining_Identifier (Loc, New_Internal_Name ('R')); + + Append_To (Decls, + Make_Object_Declaration (Loc, + Defining_Identifier => Result_Parameter, + Aliased_Present => True, + Object_Definition => + Make_Subtype_Indication (Loc, + Subtype_Mark => + New_Occurrence_Of (RTE (RE_Params_Stream_Type), Loc), + Constraint => + Make_Index_Or_Discriminant_Constraint (Loc, + Constraints => + New_List (Make_Integer_Literal (Loc, 0)))))); + + Exception_Return_Parameter := + Make_Defining_Identifier (Loc, New_Internal_Name ('E')); + + Append_To (Decls, + Make_Object_Declaration (Loc, + Defining_Identifier => Exception_Return_Parameter, + Object_Definition => + New_Occurrence_Of (RTE (RE_Exception_Occurrence), Loc))); + + else + Result_Parameter := Empty; + Exception_Return_Parameter := Empty; + end if; + + -- Put first the RPC receiver corresponding to the remote package + + Append_To (Statements, + Make_Attribute_Reference (Loc, + Prefix => + New_Occurrence_Of (RTE (RE_Unsigned_64), Loc), + Attribute_Name => Name_Write, + Expressions => New_List ( + Make_Attribute_Reference (Loc, + Prefix => + New_Occurrence_Of (Stream_Parameter, Loc), + Attribute_Name => + Name_Access), + Target_RPC_Receiver))); + + -- Then put the Subprogram_Id of the subprogram we want to call in + -- the stream. + + Append_To (Statements, + Make_Attribute_Reference (Loc, + Prefix => + New_Occurrence_Of (RTE (RE_Subprogram_Id), Loc), + Attribute_Name => + Name_Write, + Expressions => New_List ( + Make_Attribute_Reference (Loc, + Prefix => + New_Occurrence_Of (Stream_Parameter, Loc), + Attribute_Name => Name_Access), + Subprogram_Id))); + + Current_Parameter := First (Ordered_Parameters_List); + while Present (Current_Parameter) loop + declare + Typ : constant Node_Id := + Parameter_Type (Current_Parameter); + Etyp : Entity_Id; + Constrained : Boolean; + Value : Node_Id; + Extra_Parameter : Entity_Id; + + begin + if Is_RACW_Controlling_Formal + (Current_Parameter, Stub_Type) + then + -- In the case of a controlling formal argument, we marshall + -- its addr field rather than the local stub. + + Append_To (Statements, + Pack_Node_Into_Stream (Loc, + Stream => Stream_Parameter, + Object => + Make_Selected_Component (Loc, + Prefix => + New_Occurrence_Of ( + Defining_Identifier (Current_Parameter), Loc), + Selector_Name => + Make_Identifier (Loc, Name_Addr)), + Etyp => RTE (RE_Unsigned_64))); + + else + Value := New_Occurrence_Of + (Defining_Identifier (Current_Parameter), Loc); + + -- Access type parameters are transmitted as in out + -- parameters. However, a dereference is needed so that + -- we marshall the designated object. + + if Nkind (Typ) = N_Access_Definition then + Value := Make_Explicit_Dereference (Loc, Value); + Etyp := Etype (Subtype_Mark (Typ)); + else + Etyp := Etype (Typ); + end if; + + Constrained := + Is_Constrained (Etyp) or else Is_Elementary_Type (Etyp); + + -- Any parameter but unconstrained out parameters are + -- transmitted to the peer. + + if In_Present (Current_Parameter) + or else not Out_Present (Current_Parameter) + or else not Constrained + then + Append_To (Statements, + Make_Attribute_Reference (Loc, + Prefix => + New_Occurrence_Of (Etyp, Loc), + Attribute_Name => + Output_From_Constrained (Constrained), + Expressions => New_List ( + Make_Attribute_Reference (Loc, + Prefix => + New_Occurrence_Of (Stream_Parameter, Loc), + Attribute_Name => Name_Access), + Value))); + end if; + end if; + + -- If the current parameter has a dynamic constrained status, + -- then this status is transmitted as well. + -- This should be done for accessibility as well ??? + + if Nkind (Typ) /= N_Access_Definition + and then Need_Extra_Constrained (Current_Parameter) + then + -- In this block, we do not use the extra formal that has + -- been created because it does not exist at the time of + -- expansion when building calling stubs for remote access + -- to subprogram types. We create an extra variable of this + -- type and push it in the stream after the regular + -- parameters. + + Extra_Parameter := Make_Defining_Identifier + (Loc, New_Internal_Name ('P')); + + Append_To (Decls, + Make_Object_Declaration (Loc, + Defining_Identifier => Extra_Parameter, + Constant_Present => True, + Object_Definition => + New_Occurrence_Of (Standard_Boolean, Loc), + Expression => + Make_Attribute_Reference (Loc, + Prefix => + New_Occurrence_Of ( + Defining_Identifier (Current_Parameter), Loc), + Attribute_Name => Name_Constrained))); + + Append_To (Extra_Formal_Statements, + Make_Attribute_Reference (Loc, + Prefix => + New_Occurrence_Of (Standard_Boolean, Loc), + Attribute_Name => + Name_Write, + Expressions => New_List ( + Make_Attribute_Reference (Loc, + Prefix => + New_Occurrence_Of (Stream_Parameter, Loc), + Attribute_Name => + Name_Access), + New_Occurrence_Of (Extra_Parameter, Loc)))); + end if; + + Next (Current_Parameter); + end; + end loop; + + -- Append the formal statements list to the statements + + Append_List_To (Statements, Extra_Formal_Statements); + + if not Is_Known_Non_Asynchronous then + + -- Build the call to System.RPC.Do_APC + + Asynchronous_Statements := New_List ( + Make_Procedure_Call_Statement (Loc, + Name => + New_Occurrence_Of (RTE (RE_Do_Apc), Loc), + Parameter_Associations => New_List ( + New_Occurrence_Of (Target_Partition, Loc), + Make_Attribute_Reference (Loc, + Prefix => + New_Occurrence_Of (Stream_Parameter, Loc), + Attribute_Name => + Name_Access)))); + else + Asynchronous_Statements := No_List; + end if; + + if not Is_Known_Asynchronous then + + -- Build the call to System.RPC.Do_RPC + + Non_Asynchronous_Statements := New_List ( + Make_Procedure_Call_Statement (Loc, + Name => + New_Occurrence_Of (RTE (RE_Do_Rpc), Loc), + Parameter_Associations => New_List ( + New_Occurrence_Of (Target_Partition, Loc), + + Make_Attribute_Reference (Loc, + Prefix => + New_Occurrence_Of (Stream_Parameter, Loc), + Attribute_Name => + Name_Access), + + Make_Attribute_Reference (Loc, + Prefix => + New_Occurrence_Of (Result_Parameter, Loc), + Attribute_Name => + Name_Access)))); + + -- Read the exception occurrence from the result stream and + -- reraise it. It does no harm if this is a Null_Occurrence since + -- this does nothing. + + Append_To (Non_Asynchronous_Statements, + Make_Attribute_Reference (Loc, + Prefix => + New_Occurrence_Of (RTE (RE_Exception_Occurrence), Loc), + + Attribute_Name => + Name_Read, + + Expressions => New_List ( + Make_Attribute_Reference (Loc, + Prefix => + New_Occurrence_Of (Result_Parameter, Loc), + Attribute_Name => + Name_Access), + New_Occurrence_Of (Exception_Return_Parameter, Loc)))); + + Append_To (Non_Asynchronous_Statements, + Make_Procedure_Call_Statement (Loc, + Name => + New_Occurrence_Of (RTE (RE_Reraise_Occurrence), Loc), + Parameter_Associations => New_List ( + New_Occurrence_Of (Exception_Return_Parameter, Loc)))); + + if Is_Function then + + -- If this is a function call, then read the value and return + -- it. The return value is written/read using 'Output/'Input. + + Append_To (Non_Asynchronous_Statements, + Make_Tag_Check (Loc, + Make_Return_Statement (Loc, + Expression => + Make_Attribute_Reference (Loc, + Prefix => + New_Occurrence_Of ( + Etype (Subtype_Mark (Spec)), Loc), + + Attribute_Name => Name_Input, + + Expressions => New_List ( + Make_Attribute_Reference (Loc, + Prefix => + New_Occurrence_Of (Result_Parameter, Loc), + Attribute_Name => Name_Access)))))); + + else + -- Loop around parameters and assign out (or in out) + -- parameters. In the case of RACW, controlling arguments + -- cannot possibly have changed since they are remote, so we do + -- not read them from the stream. + + Current_Parameter := First (Ordered_Parameters_List); + while Present (Current_Parameter) loop + declare + Typ : constant Node_Id := + Parameter_Type (Current_Parameter); + Etyp : Entity_Id; + Value : Node_Id; + + begin + Value := + New_Occurrence_Of + (Defining_Identifier (Current_Parameter), Loc); + + if Nkind (Typ) = N_Access_Definition then + Value := Make_Explicit_Dereference (Loc, Value); + Etyp := Etype (Subtype_Mark (Typ)); + else + Etyp := Etype (Typ); + end if; + + if (Out_Present (Current_Parameter) + or else Nkind (Typ) = N_Access_Definition) + and then Etyp /= Stub_Type + then + Append_To (Non_Asynchronous_Statements, + Make_Attribute_Reference (Loc, + Prefix => + New_Occurrence_Of (Etyp, Loc), + + Attribute_Name => Name_Read, + + Expressions => New_List ( + Make_Attribute_Reference (Loc, + Prefix => + New_Occurrence_Of (Result_Parameter, Loc), + Attribute_Name => + Name_Access), + Value))); + end if; + end; + + Next (Current_Parameter); + end loop; + end if; + end if; + + if Is_Known_Asynchronous then + Append_List_To (Statements, Asynchronous_Statements); + + elsif Is_Known_Non_Asynchronous then + Append_List_To (Statements, Non_Asynchronous_Statements); + + else + pragma Assert (Present (Asynchronous)); + Prepend_To (Asynchronous_Statements, + Make_Attribute_Reference (Loc, + Prefix => New_Occurrence_Of (Standard_Boolean, Loc), + Attribute_Name => Name_Write, + Expressions => New_List ( + Make_Attribute_Reference (Loc, + Prefix => + New_Occurrence_Of (Stream_Parameter, Loc), + Attribute_Name => Name_Access), + New_Occurrence_Of (Standard_True, Loc)))); + + Prepend_To (Non_Asynchronous_Statements, + Make_Attribute_Reference (Loc, + Prefix => New_Occurrence_Of (Standard_Boolean, Loc), + Attribute_Name => Name_Write, + Expressions => New_List ( + Make_Attribute_Reference (Loc, + Prefix => + New_Occurrence_Of (Stream_Parameter, Loc), + Attribute_Name => Name_Access), + New_Occurrence_Of (Standard_False, Loc)))); + + Append_To (Statements, + Make_Implicit_If_Statement (Nod, + Condition => Asynchronous, + Then_Statements => Asynchronous_Statements, + Else_Statements => Non_Asynchronous_Statements)); + end if; + end Build_General_Calling_Stubs; + + ----------------------- + -- Build_Stub_Target -- + ----------------------- + + function Build_Stub_Target + (Loc : Source_Ptr; + Decls : List_Id; + RCI_Locator : Entity_Id; + Controlling_Parameter : Entity_Id) return RPC_Target + is + Target_Info : RPC_Target (PCS_Kind => Name_GARLIC_DSA); + begin + Target_Info.Partition := + Make_Defining_Identifier (Loc, New_Internal_Name ('P')); + if Present (Controlling_Parameter) then + Append_To (Decls, + Make_Object_Declaration (Loc, + Defining_Identifier => Target_Info.Partition, + Constant_Present => True, + Object_Definition => + New_Occurrence_Of (RTE (RE_Partition_ID), Loc), + + Expression => + Make_Selected_Component (Loc, + Prefix => + New_Occurrence_Of (Controlling_Parameter, Loc), + Selector_Name => + Make_Identifier (Loc, Name_Origin)))); + + Target_Info.RPC_Receiver := + Make_Selected_Component (Loc, + Prefix => + New_Occurrence_Of (Controlling_Parameter, Loc), + Selector_Name => + Make_Identifier (Loc, Name_Receiver)); + + else + Append_To (Decls, + Make_Object_Declaration (Loc, + Defining_Identifier => Target_Info.Partition, + Constant_Present => True, + Object_Definition => + New_Occurrence_Of (RTE (RE_Partition_ID), Loc), + + Expression => + Make_Function_Call (Loc, + Name => Make_Selected_Component (Loc, + Prefix => + Make_Identifier (Loc, Chars (RCI_Locator)), + Selector_Name => + Make_Identifier (Loc, + Name_Get_Active_Partition_ID))))); + + Target_Info.RPC_Receiver := + Make_Selected_Component (Loc, + Prefix => + Make_Identifier (Loc, Chars (RCI_Locator)), + Selector_Name => + Make_Identifier (Loc, Name_Get_RCI_Package_Receiver)); + end if; + return Target_Info; + end Build_Stub_Target; + + --------------------- + -- Build_Stub_Type -- + --------------------- + + procedure Build_Stub_Type + (RACW_Type : Entity_Id; + Stub_Type : Entity_Id; + Stub_Type_Decl : out Node_Id; + RPC_Receiver_Decl : out Node_Id) + is + Loc : constant Source_Ptr := Sloc (Stub_Type); + Is_RAS : constant Boolean := not Comes_From_Source (RACW_Type); + + begin + Stub_Type_Decl := + Make_Full_Type_Declaration (Loc, + Defining_Identifier => Stub_Type, + Type_Definition => + Make_Record_Definition (Loc, + Tagged_Present => True, + Limited_Present => True, + Component_List => + Make_Component_List (Loc, + Component_Items => New_List ( + + Make_Component_Declaration (Loc, + Defining_Identifier => + Make_Defining_Identifier (Loc, Name_Origin), + Component_Definition => + Make_Component_Definition (Loc, + Aliased_Present => False, + Subtype_Indication => + New_Occurrence_Of ( + RTE (RE_Partition_ID), Loc))), + + Make_Component_Declaration (Loc, + Defining_Identifier => + Make_Defining_Identifier (Loc, Name_Receiver), + Component_Definition => + Make_Component_Definition (Loc, + Aliased_Present => False, + Subtype_Indication => + New_Occurrence_Of (RTE (RE_Unsigned_64), Loc))), + + Make_Component_Declaration (Loc, + Defining_Identifier => + Make_Defining_Identifier (Loc, Name_Addr), + Component_Definition => + Make_Component_Definition (Loc, + Aliased_Present => False, + Subtype_Indication => + New_Occurrence_Of (RTE (RE_Unsigned_64), Loc))), + + Make_Component_Declaration (Loc, + Defining_Identifier => + Make_Defining_Identifier (Loc, Name_Asynchronous), + Component_Definition => + Make_Component_Definition (Loc, + Aliased_Present => False, + Subtype_Indication => + New_Occurrence_Of ( + Standard_Boolean, Loc))))))); + + if Is_RAS then + RPC_Receiver_Decl := Empty; + else + declare + RPC_Receiver_Stream : constant Entity_Id := + Make_Defining_Identifier (Loc, Name_S); + RPC_Receiver_Result : constant Entity_Id := + Make_Defining_Identifier (Loc, Name_R); + begin + RPC_Receiver_Decl := + Make_Subprogram_Declaration (Loc, + Build_RPC_Receiver_Specification ( + RPC_Receiver => Make_Defining_Identifier (Loc, + New_Internal_Name ('R')), + Stream_Parameter => RPC_Receiver_Stream, + Result_Parameter => RPC_Receiver_Result)); + end; + end if; + end Build_Stub_Type; + + -------------------------------------- + -- Build_RPC_Receiver_Specification -- + -------------------------------------- + + function Build_RPC_Receiver_Specification + (RPC_Receiver : Entity_Id; + Stream_Parameter : Entity_Id; + Result_Parameter : Entity_Id) return Node_Id + is + Loc : constant Source_Ptr := Sloc (RPC_Receiver); + + begin + return + Make_Procedure_Specification (Loc, + Defining_Unit_Name => RPC_Receiver, + Parameter_Specifications => New_List ( + Make_Parameter_Specification (Loc, + Defining_Identifier => Stream_Parameter, + Parameter_Type => + Make_Access_Definition (Loc, + Subtype_Mark => + New_Occurrence_Of (RTE (RE_Params_Stream_Type), Loc))), + + Make_Parameter_Specification (Loc, + Defining_Identifier => Result_Parameter, + Parameter_Type => + Make_Access_Definition (Loc, + Subtype_Mark => + New_Occurrence_Of + (RTE (RE_Params_Stream_Type), Loc))))); + end Build_RPC_Receiver_Specification; + ------------ -- Result -- ------------ @@ -4362,7 +4714,8 @@ package body Exp_Dist is function Get_PCS_Name return PCS_Names is PCS_Name : constant PCS_Names := - Chars (Entity (Expression (Parent (RTE (RE_DSA_Implementation))))); + Chars (Entity (Expression + (Parent (RTE (RE_DSA_Implementation))))); begin return PCS_Name; end Get_PCS_Name; @@ -4451,10 +4804,6 @@ package body Exp_Dist is return Hash_Index (Natural (F) mod Positive (Hash_Index'Last + 1)); end Hash; - ---------- - -- Hash -- - ---------- - function Hash (F : Name_Id) return Hash_Index is begin return Hash_Index (Natural (F) mod Positive (Hash_Index'Last + 1)); @@ -4646,9 +4995,62 @@ package body Exp_Dist is package body PolyORB_Support is - pragma Warnings (Off); - -- Currently, this package contains empty placeholders - -- that do not reference their parameters. + -- Local subprograms + + procedure Add_RACW_Read_Attribute + (RACW_Type : Entity_Id; + Stub_Type : Entity_Id; + Stub_Type_Access : Entity_Id; + Declarations : List_Id); + -- Add Read attribute in Decls for the RACW type. The Read attribute + -- is added right after the RACW_Type declaration while the body is + -- inserted after Declarations. + + procedure Add_RACW_Write_Attribute + (RACW_Type : Entity_Id; + Stub_Type : Entity_Id; + Stub_Type_Access : Entity_Id; + Declarations : List_Id); + -- Same thing for the Write attribute + + procedure Add_RACW_From_Any + (RACW_Type : Entity_Id; + Stub_Type : Entity_Id; + Stub_Type_Access : Entity_Id; + Declarations : List_Id); + -- Add the From_Any TSS for this RACW type + + procedure Add_RACW_To_Any + (Designated_Type : Entity_Id; + RACW_Type : Entity_Id; + Stub_Type : Entity_Id; + Stub_Type_Access : Entity_Id; + Declarations : List_Id); + -- Add the To_Any TSS for this RACW type + + procedure Add_RACW_TypeCode + (Designated_Type : Entity_Id; + RACW_Type : Entity_Id; + Declarations : List_Id); + -- Add the TypeCode TSS for this RACW type + + procedure Add_RAS_From_Any + (RAS_Type : Entity_Id; + Declarations : List_Id); + -- Add the From_Any TSS for this RAS type + + procedure Add_RAS_To_Any + (RAS_Type : Entity_Id; + Declarations : List_Id); + -- Add the To_Any TSS for this RAS type + + procedure Add_RAS_TypeCode + (RAS_Type : Entity_Id; + Declarations : List_Id); + -- Add the TypeCode TSS for this RAS type + + procedure Add_RAS_Access_TSS (N : Node_Id); + -- Add a subprogram body for RAS Access TSS ----------------------- -- Add_RACW_Features -- @@ -4662,24 +5064,4493 @@ package body Exp_Dist is RPC_Receiver_Decl : Node_Id; Declarations : List_Id) is + pragma Warnings (Off); + pragma Unreferenced (RPC_Receiver_Decl); + pragma Warnings (On); + begin - raise Program_Error; + Add_RACW_From_Any + (RACW_Type => RACW_Type, + Stub_Type => Stub_Type, + Stub_Type_Access => Stub_Type_Access, + Declarations => Declarations); + + Add_RACW_To_Any + (Designated_Type => Desig, + RACW_Type => RACW_Type, + Stub_Type => Stub_Type, + Stub_Type_Access => Stub_Type_Access, + Declarations => Declarations); + + -- In the PolyORB case, the RACW 'Read and 'Write attributes + -- are implemented in terms of the From_Any and To_Any TSSs, + -- so these TSSs must be expanded before 'Read and 'Write. + + Add_RACW_Write_Attribute + (RACW_Type => RACW_Type, + Stub_Type => Stub_Type, + Stub_Type_Access => Stub_Type_Access, + Declarations => Declarations); + + Add_RACW_Read_Attribute + (RACW_Type => RACW_Type, + Stub_Type => Stub_Type, + Stub_Type_Access => Stub_Type_Access, + Declarations => Declarations); + + Add_RACW_TypeCode + (Designated_Type => Desig, + RACW_Type => RACW_Type, + Declarations => Declarations); end Add_RACW_Features; ----------------------- + -- Add_RACW_From_Any -- + ----------------------- + + procedure Add_RACW_From_Any + (RACW_Type : Entity_Id; + Stub_Type : Entity_Id; + Stub_Type_Access : Entity_Id; + Declarations : List_Id) + is + Loc : constant Source_Ptr := Sloc (RACW_Type); + Is_RAS : constant Boolean := not Comes_From_Source (RACW_Type); + + Fnam : constant Entity_Id := + Make_Defining_Identifier (Loc, New_Internal_Name ('F')); + + Func_Spec : Node_Id; + Func_Decl : Node_Id; + Func_Body : Node_Id; + + Decls : List_Id; + Statements : List_Id; + Stub_Statements : List_Id; + Local_Statements : List_Id; + -- Various parts of the subprogram + + Any_Parameter : constant Entity_Id := + Make_Defining_Identifier (Loc, Name_A); + Reference : constant Entity_Id := + Make_Defining_Identifier + (Loc, New_Internal_Name ('R')); + Is_Local : constant Entity_Id := + Make_Defining_Identifier + (Loc, New_Internal_Name ('L')); + Addr : constant Entity_Id := + Make_Defining_Identifier + (Loc, New_Internal_Name ('A')); + Local_Stub : constant Entity_Id := + Make_Defining_Identifier + (Loc, New_Internal_Name ('L')); + Stubbed_Result : constant Entity_Id := + Make_Defining_Identifier + (Loc, New_Internal_Name ('S')); + + Stub_Condition : Node_Id; + -- An expression that determines whether we create a stub for the + -- newly-unpacked RACW. Normally we create a stub only for remote + -- objects, but in the case of an RACW used to implement a RAS, + -- we also create a stub for local subprograms if a pragma + -- All_Calls_Remote applies. + + Asynchronous_Flag : constant Entity_Id := + Asynchronous_Flags_Table.Get (RACW_Type); + -- The flag object declared in Add_RACW_Asynchronous_Flag + + begin + -- Object declarations + + Decls := New_List ( + Make_Object_Declaration (Loc, + Defining_Identifier => + Reference, + Object_Definition => + New_Occurrence_Of (RTE (RE_Object_Ref), Loc), + Expression => + Make_Function_Call (Loc, + Name => + New_Occurrence_Of (RTE (RE_FA_ObjRef), Loc), + Parameter_Associations => New_List ( + New_Occurrence_Of (Any_Parameter, Loc)))), + + Make_Object_Declaration (Loc, + Defining_Identifier => Local_Stub, + Aliased_Present => True, + Object_Definition => New_Occurrence_Of (Stub_Type, Loc)), + + Make_Object_Declaration (Loc, + Defining_Identifier => Stubbed_Result, + Object_Definition => + New_Occurrence_Of (Stub_Type_Access, Loc), + Expression => + Make_Attribute_Reference (Loc, + Prefix => + New_Occurrence_Of (Local_Stub, Loc), + Attribute_Name => + Name_Unchecked_Access)), + + Make_Object_Declaration (Loc, + Defining_Identifier => Is_Local, + Object_Definition => + New_Occurrence_Of (Standard_Boolean, Loc)), + + Make_Object_Declaration (Loc, + Defining_Identifier => Addr, + Object_Definition => + New_Occurrence_Of (RTE (RE_Address), Loc))); + + -- Build_Get_Unique_RP_Call needs the type of Stubbed_Result + + Set_Etype (Stubbed_Result, Stub_Type_Access); + + -- If the ref Is_Nil, return a null pointer + + Statements := New_List ( + Make_Implicit_If_Statement (RACW_Type, + Condition => + Make_Function_Call (Loc, + Name => + New_Occurrence_Of (RTE (RE_Is_Nil), Loc), + Parameter_Associations => New_List ( + New_Occurrence_Of (Reference, Loc))), + Then_Statements => New_List ( + Make_Return_Statement (Loc, + Expression => + Make_Null (Loc))))); + + Append_To (Statements, + Make_Procedure_Call_Statement (Loc, + Name => + New_Occurrence_Of (RTE (RE_Get_Local_Address), Loc), + Parameter_Associations => New_List ( + New_Occurrence_Of (Reference, Loc), + New_Occurrence_Of (Is_Local, Loc), + New_Occurrence_Of (Addr, Loc)))); + + -- If the object is located on another partition, then a stub object + -- will be created with all the information needed to rebuild the + -- real object at the other end. This stanza is always used in the + -- case of RAS types, for which a stub is required even for local + -- subprograms. + + Stub_Statements := New_List ( + Make_Assignment_Statement (Loc, + Name => Make_Selected_Component (Loc, + Prefix => New_Occurrence_Of (Stubbed_Result, Loc), + Selector_Name => Make_Identifier (Loc, Name_Target)), + Expression => + Make_Function_Call (Loc, + Name => + New_Occurrence_Of (RTE (RE_Entity_Of), Loc), + Parameter_Associations => New_List ( + New_Occurrence_Of (Reference, Loc)))), + + Make_Procedure_Call_Statement (Loc, + Name => + New_Occurrence_Of (RTE (RE_Inc_Usage), Loc), + Parameter_Associations => New_List ( + Make_Selected_Component (Loc, + Prefix => New_Occurrence_Of (Stubbed_Result, Loc), + Selector_Name => Make_Identifier (Loc, Name_Target)))), + + Make_Assignment_Statement (Loc, + Name => Make_Selected_Component (Loc, + Prefix => New_Occurrence_Of (Stubbed_Result, Loc), + Selector_Name => Make_Identifier (Loc, Name_Asynchronous)), + Expression => + New_Occurrence_Of (Asynchronous_Flag, Loc))); + + -- ??? Issue with asynchronous calls here: the Asynchronous + -- flag is set on the stub type if, and only if, the RACW type + -- has a pragma Asynchronous. This is incorrect for RACWs that + -- implement RAS types, because in that case the /designated + -- subprogram/ (not the type) might be asynchronous, and + -- that causes the stub to need to be asynchronous too. + -- A solution is to transport a RAS as a struct containing + -- a RACW and an asynchronous flag, and to properly alter + -- the Asynchronous component in the stub type in the RAS's + -- _From_Any TSS. + + Append_List_To (Stub_Statements, + Build_Get_Unique_RP_Call (Loc, Stubbed_Result, Stub_Type)); + + -- Distinguish between the local and remote cases, and execute the + -- appropriate piece of code. + + Stub_Condition := New_Occurrence_Of (Is_Local, Loc); + + if Is_RAS then + Stub_Condition := Make_And_Then (Loc, + Left_Opnd => + Stub_Condition, + Right_Opnd => + Make_Selected_Component (Loc, + Prefix => + Unchecked_Convert_To ( + RTE (RE_RAS_Proxy_Type_Access), + New_Occurrence_Of (Addr, Loc)), + Selector_Name => + Make_Identifier (Loc, + Name_All_Calls_Remote))); + end if; + + Local_Statements := New_List ( + Make_Return_Statement (Loc, + Expression => + Unchecked_Convert_To (RACW_Type, + New_Occurrence_Of (Addr, Loc)))); + + Append_To (Statements, + Make_Implicit_If_Statement (RACW_Type, + Condition => + Stub_Condition, + Then_Statements => Local_Statements, + Else_Statements => Stub_Statements)); + + Append_To (Statements, + Make_Return_Statement (Loc, + Expression => Unchecked_Convert_To (RACW_Type, + New_Occurrence_Of (Stubbed_Result, Loc)))); + + Func_Spec := + Make_Function_Specification (Loc, + Defining_Unit_Name => + Fnam, + Parameter_Specifications => New_List ( + Make_Parameter_Specification (Loc, + Defining_Identifier => + Any_Parameter, + Parameter_Type => + New_Occurrence_Of (RTE (RE_Any), Loc))), + Subtype_Mark => New_Occurrence_Of (RACW_Type, Loc)); + + -- NOTE: The usage occurrences of RACW_Parameter must + -- refer to the entity in the declaration spec, not those + -- of the body spec. + + Func_Decl := Make_Subprogram_Declaration (Loc, Func_Spec); + + Func_Body := + Make_Subprogram_Body (Loc, + Specification => + Copy_Specification (Loc, Func_Spec), + Declarations => Decls, + Handled_Statement_Sequence => + Make_Handled_Sequence_Of_Statements (Loc, + Statements => Statements)); + + Insert_After (Declaration_Node (RACW_Type), Func_Decl); + Append_To (Declarations, Func_Body); + + Set_Renaming_TSS (RACW_Type, Fnam, Name_uFrom_Any); + end Add_RACW_From_Any; + + ----------------------------- + -- Add_RACW_Read_Attribute -- + ----------------------------- + + procedure Add_RACW_Read_Attribute + (RACW_Type : Entity_Id; + Stub_Type : Entity_Id; + Stub_Type_Access : Entity_Id; + Declarations : List_Id) + is + pragma Warnings (Off); + pragma Unreferenced (Stub_Type, Stub_Type_Access); + pragma Warnings (On); + Loc : constant Source_Ptr := Sloc (RACW_Type); + + Proc_Decl : Node_Id; + Attr_Decl : Node_Id; + + Body_Node : Node_Id; + + Decls : List_Id; + Statements : List_Id; + -- Various parts of the procedure + + Procedure_Name : constant Name_Id := + New_Internal_Name ('R'); + Source_Ref : constant Entity_Id := + Make_Defining_Identifier + (Loc, New_Internal_Name ('R')); + Asynchronous_Flag : constant Entity_Id := + Asynchronous_Flags_Table.Get (RACW_Type); + pragma Assert (Present (Asynchronous_Flag)); + + function Stream_Parameter return Node_Id; + function Result return Node_Id; + -- Functions to create occurrences of the formal parameter names + + ------------ + -- Result -- + ------------ + + function Result return Node_Id is + begin + return Make_Identifier (Loc, Name_V); + end Result; + + ---------------------- + -- Stream_Parameter -- + ---------------------- + + function Stream_Parameter return Node_Id is + begin + return Make_Identifier (Loc, Name_S); + end Stream_Parameter; + + -- Start of processing for Add_RACW_Read_Attribute + + begin + -- Generate object declarations + + Decls := New_List ( + Make_Object_Declaration (Loc, + Defining_Identifier => Source_Ref, + Object_Definition => + New_Occurrence_Of (RTE (RE_Object_Ref), Loc))); + + Statements := New_List ( + Make_Attribute_Reference (Loc, + Prefix => + New_Occurrence_Of (RTE (RE_Object_Ref), Loc), + Attribute_Name => Name_Read, + Expressions => New_List ( + Stream_Parameter, + New_Occurrence_Of (Source_Ref, Loc))), + Make_Assignment_Statement (Loc, + Name => + Result, + Expression => + PolyORB_Support.Helpers.Build_From_Any_Call ( + RACW_Type, + Make_Function_Call (Loc, + Name => + New_Occurrence_Of (RTE (RE_TA_ObjRef), Loc), + Parameter_Associations => New_List ( + New_Occurrence_Of (Source_Ref, Loc))), + Decls))); + + Build_Stream_Procedure + (Loc, RACW_Type, Body_Node, + Make_Defining_Identifier (Loc, Procedure_Name), + Statements, Outp => True); + Set_Declarations (Body_Node, Decls); + + Proc_Decl := Make_Subprogram_Declaration (Loc, + Copy_Specification (Loc, Specification (Body_Node))); + + Attr_Decl := + Make_Attribute_Definition_Clause (Loc, + Name => New_Occurrence_Of (RACW_Type, Loc), + Chars => Name_Read, + Expression => + New_Occurrence_Of ( + Defining_Unit_Name (Specification (Proc_Decl)), Loc)); + + Insert_After (Declaration_Node (RACW_Type), Proc_Decl); + Insert_After (Proc_Decl, Attr_Decl); + Append_To (Declarations, Body_Node); + end Add_RACW_Read_Attribute; + + --------------------- + -- Add_RACW_To_Any -- + --------------------- + + procedure Add_RACW_To_Any + (Designated_Type : Entity_Id; + RACW_Type : Entity_Id; + Stub_Type : Entity_Id; + Stub_Type_Access : Entity_Id; + Declarations : List_Id) + is + Loc : constant Source_Ptr := Sloc (RACW_Type); + + Is_RAS : constant Boolean := not Comes_From_Source (RACW_Type); + + Fnam : Entity_Id; + + Stub_Elements : constant Stub_Structure := + Stubs_Table.Get (Designated_Type); + pragma Assert (Stub_Elements /= Empty_Stub_Structure); + + Func_Spec : Node_Id; + Func_Decl : Node_Id; + Func_Body : Node_Id; + + Decls : List_Id; + Statements : List_Id; + Null_Statements : List_Id; + Local_Statements : List_Id := No_List; + Stub_Statements : List_Id; + If_Node : Node_Id; + -- Various parts of the subprogram + + RACW_Parameter : constant Entity_Id + := Make_Defining_Identifier (Loc, Name_R); + + Reference : constant Entity_Id := + Make_Defining_Identifier + (Loc, New_Internal_Name ('R')); + Any : constant Entity_Id := + Make_Defining_Identifier + (Loc, New_Internal_Name ('A')); + + begin + -- Object declarations + + Decls := New_List ( + Make_Object_Declaration (Loc, + Defining_Identifier => + Reference, + Object_Definition => + New_Occurrence_Of (RTE (RE_Object_Ref), Loc)), + Make_Object_Declaration (Loc, + Defining_Identifier => + Any, + Object_Definition => + New_Occurrence_Of (RTE (RE_Any), Loc))); + + -- If the object is null, nothing to do (Reference is already + -- a Nil ref.) + + Null_Statements := New_List (Make_Null_Statement (Loc)); + + if Is_RAS then + + -- If the object is a RAS designating a local subprogram, + -- we already have a target reference. + + Local_Statements := New_List ( + Make_Procedure_Call_Statement (Loc, + Name => + New_Occurrence_Of (RTE (RE_Set_Ref), Loc), + Parameter_Associations => New_List ( + New_Occurrence_Of (Reference, Loc), + Make_Selected_Component (Loc, + Prefix => + Unchecked_Convert_To (RTE (RE_RAS_Proxy_Type_Access), + New_Occurrence_Of (RACW_Parameter, Loc)), + Selector_Name => Make_Identifier (Loc, Name_Target))))); + + else + -- If the object is a local RACW object, use Get_Reference now + -- to obtain a reference. + + Local_Statements := New_List ( + Make_Procedure_Call_Statement (Loc, + Name => + New_Occurrence_Of (RTE (RE_Get_Reference), Loc), + Parameter_Associations => New_List ( + Unchecked_Convert_To ( + RTE (RE_Address), + New_Occurrence_Of (RACW_Parameter, Loc)), + Make_String_Literal (Loc, + Full_Qualified_Name (Designated_Type)), + Make_Attribute_Reference (Loc, + Prefix => + New_Occurrence_Of ( + Defining_Identifier ( + Stub_Elements.RPC_Receiver_Decl), Loc), + Attribute_Name => + Name_Access), + New_Occurrence_Of (Reference, Loc)))); + end if; + + -- If the object is located on another partition, use the target + -- from the stub. + + Stub_Statements := New_List ( + Make_Procedure_Call_Statement (Loc, + Name => + New_Occurrence_Of (RTE (RE_Set_Ref), Loc), + Parameter_Associations => New_List ( + New_Occurrence_Of (Reference, Loc), + Make_Selected_Component (Loc, + Prefix => Unchecked_Convert_To (Stub_Type_Access, + New_Occurrence_Of (RACW_Parameter, Loc)), + Selector_Name => + Make_Identifier (Loc, Name_Target))))); + + -- Distinguish between the null, local and remote cases, + -- and execute the appropriate piece of code. + + If_Node := + Make_Implicit_If_Statement (RACW_Type, + Condition => + Make_Op_Eq (Loc, + Left_Opnd => New_Occurrence_Of (RACW_Parameter, Loc), + Right_Opnd => Make_Null (Loc)), + Then_Statements => Null_Statements, + Elsif_Parts => New_List ( + Make_Elsif_Part (Loc, + Condition => + Make_Op_Ne (Loc, + Left_Opnd => + Make_Attribute_Reference (Loc, + Prefix => + New_Occurrence_Of (RACW_Parameter, Loc), + Attribute_Name => Name_Tag), + Right_Opnd => + Make_Attribute_Reference (Loc, + Prefix => New_Occurrence_Of (Stub_Type, Loc), + Attribute_Name => Name_Tag)), + Then_Statements => Local_Statements)), + Else_Statements => Stub_Statements); + + Statements := New_List ( + If_Node, + Make_Assignment_Statement (Loc, + Name => + New_Occurrence_Of (Any, Loc), + Expression => + Make_Function_Call (Loc, + Name => New_Occurrence_Of (RTE (RE_TA_ObjRef), Loc), + Parameter_Associations => New_List ( + New_Occurrence_Of (Reference, Loc)))), + Make_Procedure_Call_Statement (Loc, + Name => + New_Occurrence_Of (RTE (RE_Set_TC), Loc), + Parameter_Associations => New_List ( + New_Occurrence_Of (Any, Loc), + Make_Selected_Component (Loc, + Prefix => + New_Occurrence_Of ( + Defining_Identifier ( + Stub_Elements.RPC_Receiver_Decl), Loc), + Selector_Name => + Make_Identifier (Loc, Name_Obj_TypeCode)))), + Make_Return_Statement (Loc, + Expression => + New_Occurrence_Of (Any, Loc))); + + Fnam := Make_Defining_Identifier ( + Loc, New_Internal_Name ('T')); + + Func_Spec := + Make_Function_Specification (Loc, + Defining_Unit_Name => + Fnam, + Parameter_Specifications => New_List ( + Make_Parameter_Specification (Loc, + Defining_Identifier => + RACW_Parameter, + Parameter_Type => + New_Occurrence_Of (RACW_Type, Loc))), + Subtype_Mark => New_Occurrence_Of (RTE (RE_Any), Loc)); + + -- NOTE: The usage occurrences of RACW_Parameter must + -- refer to the entity in the declaration spec, not in + -- the body spec. + + Func_Decl := Make_Subprogram_Declaration (Loc, Func_Spec); + + Func_Body := + Make_Subprogram_Body (Loc, + Specification => + Copy_Specification (Loc, Func_Spec), + Declarations => Decls, + Handled_Statement_Sequence => + Make_Handled_Sequence_Of_Statements (Loc, + Statements => Statements)); + + Insert_After (Declaration_Node (RACW_Type), Func_Decl); + Append_To (Declarations, Func_Body); + + Set_Renaming_TSS (RACW_Type, Fnam, Name_uTo_Any); + end Add_RACW_To_Any; + + ----------------------- + -- Add_RACW_TypeCode -- + ----------------------- + + procedure Add_RACW_TypeCode + (Designated_Type : Entity_Id; + RACW_Type : Entity_Id; + Declarations : List_Id) + is + Loc : constant Source_Ptr := Sloc (RACW_Type); + + Fnam : Entity_Id; + + Stub_Elements : constant Stub_Structure := + Stubs_Table.Get (Designated_Type); + pragma Assert (Stub_Elements /= Empty_Stub_Structure); + + Func_Spec : Node_Id; + Func_Decl : Node_Id; + Func_Body : Node_Id; + + RACW_Parameter : constant Entity_Id := + Make_Defining_Identifier (Loc, Name_R); + + begin + Fnam := + Make_Defining_Identifier (Loc, + Chars => New_Internal_Name ('T')); + + -- The spec for this subprogram has a dummy 'access RACW' + -- argument, which serves only for overloading purposes. + + Func_Spec := + Make_Function_Specification (Loc, + Defining_Unit_Name => + Fnam, + Parameter_Specifications => New_List ( + Make_Parameter_Specification (Loc, + Defining_Identifier => + RACW_Parameter, + Parameter_Type => + Make_Access_Definition (Loc, + Subtype_Mark => + New_Occurrence_Of (RACW_Type, Loc)))), + Subtype_Mark => New_Occurrence_Of (RTE (RE_TypeCode), Loc)); + + -- NOTE: The usage occurrences of RACW_Parameter must + -- refer to the entity in the declaration spec, not those + -- of the body spec. + + Func_Decl := Make_Subprogram_Declaration (Loc, Func_Spec); + + Func_Body := + Make_Subprogram_Body (Loc, + Specification => + Copy_Specification (Loc, Func_Spec), + Declarations => Empty_List, + Handled_Statement_Sequence => + Make_Handled_Sequence_Of_Statements (Loc, + Statements => New_List ( + Make_Return_Statement (Loc, + Expression => + Make_Selected_Component (Loc, + Prefix => + New_Occurrence_Of ( + Defining_Identifier ( + Stub_Elements.RPC_Receiver_Decl), Loc), + Selector_Name => + Make_Identifier (Loc, Name_Obj_TypeCode)))))); + + Insert_After (Declaration_Node (RACW_Type), Func_Decl); + Append_To (Declarations, Func_Body); + + Set_Renaming_TSS (RACW_Type, Fnam, Name_uTypeCode); + end Add_RACW_TypeCode; + + ------------------------------ + -- Add_RACW_Write_Attribute -- + ------------------------------ + + procedure Add_RACW_Write_Attribute + (RACW_Type : Entity_Id; + Stub_Type : Entity_Id; + Stub_Type_Access : Entity_Id; + Declarations : List_Id) + is + Loc : constant Source_Ptr := Sloc (RACW_Type); + pragma Warnings (Off); + pragma Unreferenced ( + Stub_Type, + Stub_Type_Access); + + Is_RAS : constant Boolean := not Comes_From_Source (RACW_Type); + pragma Unreferenced (Is_RAS); + pragma Warnings (On); + + Body_Node : Node_Id; + Proc_Decl : Node_Id; + Attr_Decl : Node_Id; + + Statements : List_Id; + Procedure_Name : constant Name_Id := New_Internal_Name ('R'); + + function Stream_Parameter return Node_Id; + function Object return Node_Id; + -- Functions to create occurrences of the formal parameter names + + ------------ + -- Object -- + ------------ + + function Object return Node_Id is + Object_Ref : constant Node_Id := + Make_Identifier (Loc, Name_V); + + begin + -- Etype must be set for Build_To_Any_Call + + Set_Etype (Object_Ref, RACW_Type); + + return Object_Ref; + end Object; + + ---------------------- + -- Stream_Parameter -- + ---------------------- + + function Stream_Parameter return Node_Id is + begin + return Make_Identifier (Loc, Name_S); + end Stream_Parameter; + + -- Start of processing for Add_RACW_Write_Attribute + + begin + Statements := New_List ( + Pack_Node_Into_Stream_Access (Loc, + Stream => Stream_Parameter, + Object => + Make_Function_Call (Loc, + Name => + New_Occurrence_Of (RTE (RE_FA_ObjRef), Loc), + Parameter_Associations => New_List ( + PolyORB_Support.Helpers.Build_To_Any_Call + (Object, Declarations))), + Etyp => RTE (RE_Object_Ref))); + + Build_Stream_Procedure + (Loc, RACW_Type, Body_Node, + Make_Defining_Identifier (Loc, Procedure_Name), + Statements, Outp => False); + + Proc_Decl := + Make_Subprogram_Declaration (Loc, + Copy_Specification (Loc, Specification (Body_Node))); + + Attr_Decl := + Make_Attribute_Definition_Clause (Loc, + Name => New_Occurrence_Of (RACW_Type, Loc), + Chars => Name_Write, + Expression => + New_Occurrence_Of ( + Defining_Unit_Name (Specification (Proc_Decl)), Loc)); + + Insert_After (Declaration_Node (RACW_Type), Proc_Decl); + Insert_After (Proc_Decl, Attr_Decl); + Append_To (Declarations, Body_Node); + end Add_RACW_Write_Attribute; + + ----------------------- -- Add_RAST_Features -- ----------------------- procedure Add_RAST_Features (Vis_Decl : Node_Id; RAS_Type : Entity_Id; - Decls : List_Id) is + Decls : List_Id) + is begin - raise Program_Error; + Add_RAS_Access_TSS (Vis_Decl); + + Add_RAS_From_Any (RAS_Type, Decls); + Add_RAS_TypeCode (RAS_Type, Decls); + + -- To_Any uses TypeCode, and therefore needs to be generated last + + Add_RAS_To_Any (RAS_Type, Decls); end Add_RAST_Features; - pragma Warnings (On); + ------------------------ + -- Add_RAS_Access_TSS -- + ------------------------ + + procedure Add_RAS_Access_TSS (N : Node_Id) is + Loc : constant Source_Ptr := Sloc (N); + + Ras_Type : constant Entity_Id := Defining_Identifier (N); + Fat_Type : constant Entity_Id := Equivalent_Type (Ras_Type); + -- Ras_Type is the access to subprogram type; Fat_Type is the + -- corresponding record type. + + RACW_Type : constant Entity_Id := + Underlying_RACW_Type (Ras_Type); + Desig : constant Entity_Id := + Etype (Designated_Type (RACW_Type)); + + Stub_Elements : constant Stub_Structure := + Stubs_Table.Get (Desig); + pragma Assert (Stub_Elements /= Empty_Stub_Structure); + + Proc : constant Entity_Id := + Make_Defining_Identifier (Loc, + Chars => Make_TSS_Name (Ras_Type, TSS_RAS_Access)); + + Proc_Spec : Node_Id; + + -- Formal parameters + + Package_Name : constant Entity_Id := + Make_Defining_Identifier (Loc, + Chars => Name_P); + + -- Target package + + Subp_Id : constant Entity_Id := + Make_Defining_Identifier (Loc, + Chars => Name_S); + + -- Target subprogram + + Asynch_P : constant Entity_Id := + Make_Defining_Identifier (Loc, + Chars => Name_Asynchronous); + -- Is the procedure to which the 'Access applies asynchronous? + + All_Calls_Remote : constant Entity_Id := + Make_Defining_Identifier (Loc, + Chars => Name_All_Calls_Remote); + -- True if an All_Calls_Remote pragma applies to the RCI unit + -- that contains the subprogram. + + -- Common local variables + + Proc_Decls : List_Id; + Proc_Statements : List_Id; + + Subp_Ref : constant Entity_Id := + Make_Defining_Identifier (Loc, Name_R); + -- Reference that designates the target subprogram (returned + -- by Get_RAS_Info). + + Is_Local : constant Entity_Id := + Make_Defining_Identifier (Loc, Name_L); + Local_Addr : constant Entity_Id := + Make_Defining_Identifier (Loc, Name_A); + -- For the call to Get_Local_Address + + -- Additional local variables for the remote case + + Local_Stub : constant Entity_Id := + Make_Defining_Identifier (Loc, + Chars => New_Internal_Name ('L')); + + Stub_Ptr : constant Entity_Id := + Make_Defining_Identifier (Loc, + Chars => New_Internal_Name ('S')); + + function Set_Field + (Field_Name : Name_Id; + Value : Node_Id) return Node_Id; + -- Construct an assignment that sets the named component in the + -- returned record + + --------------- + -- Set_Field -- + --------------- + + function Set_Field + (Field_Name : Name_Id; + Value : Node_Id) return Node_Id + is + begin + return + Make_Assignment_Statement (Loc, + Name => + Make_Selected_Component (Loc, + Prefix => New_Occurrence_Of (Stub_Ptr, Loc), + Selector_Name => Make_Identifier (Loc, Field_Name)), + Expression => Value); + end Set_Field; + + -- Start of processing for Add_RAS_Access_TSS + + begin + Proc_Decls := New_List ( + + -- Common declarations + + Make_Object_Declaration (Loc, + Defining_Identifier => Subp_Ref, + Object_Definition => + New_Occurrence_Of (RTE (RE_Object_Ref), Loc)), + + Make_Object_Declaration (Loc, + Defining_Identifier => Is_Local, + Object_Definition => + New_Occurrence_Of (Standard_Boolean, Loc)), + + Make_Object_Declaration (Loc, + Defining_Identifier => Local_Addr, + Object_Definition => + New_Occurrence_Of (RTE (RE_Address), Loc)), + + Make_Object_Declaration (Loc, + Defining_Identifier => Local_Stub, + Aliased_Present => True, + Object_Definition => + New_Occurrence_Of (Stub_Elements.Stub_Type, Loc)), + + Make_Object_Declaration (Loc, + Defining_Identifier => + Stub_Ptr, + Object_Definition => + New_Occurrence_Of (Stub_Elements.Stub_Type_Access, Loc), + Expression => + Make_Attribute_Reference (Loc, + Prefix => New_Occurrence_Of (Local_Stub, Loc), + Attribute_Name => Name_Unchecked_Access))); + + Set_Etype (Stub_Ptr, Stub_Elements.Stub_Type_Access); + -- Build_Get_Unique_RP_Call needs this information + + -- Get_RAS_Info (Pkg, Subp, R); + -- Obtain a reference to the target subprogram + + Proc_Statements := New_List ( + Make_Procedure_Call_Statement (Loc, + Name => + New_Occurrence_Of (RTE (RE_Get_RAS_Info), Loc), + Parameter_Associations => New_List ( + New_Occurrence_Of (Package_Name, Loc), + New_Occurrence_Of (Subp_Id, Loc), + New_Occurrence_Of (Subp_Ref, Loc))), + + -- Get_Local_Address (R, L, A); + -- Determine whether the subprogram is local (L), and if so + -- obtain the local address of its proxy (A). + + Make_Procedure_Call_Statement (Loc, + Name => + New_Occurrence_Of (RTE (RE_Get_Local_Address), Loc), + Parameter_Associations => New_List ( + New_Occurrence_Of (Subp_Ref, Loc), + New_Occurrence_Of (Is_Local, Loc), + New_Occurrence_Of (Local_Addr, Loc)))); + + -- Note: Here we assume that the Fat_Type is a record containing just + -- an access to a proxy or stub object. + + Append_To (Proc_Statements, + + -- if L then + + Make_Implicit_If_Statement (N, + Condition => + New_Occurrence_Of (Is_Local, Loc), + + Then_Statements => New_List ( + + -- if A.Target = null then + + Make_Implicit_If_Statement (N, + Condition => + Make_Op_Eq (Loc, + Make_Selected_Component (Loc, + Prefix => + Unchecked_Convert_To ( + RTE (RE_RAS_Proxy_Type_Access), + New_Occurrence_Of (Local_Addr, Loc)), + Selector_Name => + Make_Identifier (Loc, Name_Target)), + Make_Null (Loc)), + + Then_Statements => New_List ( + + -- A.Target := Entity_Of (Ref); + + Make_Assignment_Statement (Loc, + Name => + Make_Selected_Component (Loc, + Prefix => + Unchecked_Convert_To ( + RTE (RE_RAS_Proxy_Type_Access), + New_Occurrence_Of (Local_Addr, Loc)), + Selector_Name => + Make_Identifier (Loc, Name_Target)), + Expression => + Make_Function_Call (Loc, + Name => + New_Occurrence_Of (RTE (RE_Entity_Of), Loc), + Parameter_Associations => New_List ( + New_Occurrence_Of (Subp_Ref, Loc)))), + + -- Inc_Usage (A.Target); + + Make_Procedure_Call_Statement (Loc, + Name => + New_Occurrence_Of (RTE (RE_Inc_Usage), Loc), + Parameter_Associations => New_List ( + Make_Selected_Component (Loc, + Prefix => + Unchecked_Convert_To ( + RTE (RE_RAS_Proxy_Type_Access), + New_Occurrence_Of (Local_Addr, Loc)), + Selector_Name => Make_Identifier (Loc, + Name_Target)))))), + + -- end if; + -- if not All_Calls_Remote then + -- return Fat_Type!(A); + -- end if; + + Make_Implicit_If_Statement (N, + Condition => + Make_Op_Not (Loc, + New_Occurrence_Of (All_Calls_Remote, Loc)), + + Then_Statements => New_List ( + Make_Return_Statement (Loc, + Unchecked_Convert_To (Fat_Type, + New_Occurrence_Of (Local_Addr, Loc)))))))); + + Append_List_To (Proc_Statements, New_List ( + + -- Stub.Target := Entity_Of (Ref); + + Set_Field (Name_Target, + Make_Function_Call (Loc, + Name => + New_Occurrence_Of (RTE (RE_Entity_Of), Loc), + Parameter_Associations => New_List ( + New_Occurrence_Of (Subp_Ref, Loc)))), + + -- Inc_Usage (Stub.Target); + + Make_Procedure_Call_Statement (Loc, + Name => + New_Occurrence_Of (RTE (RE_Inc_Usage), Loc), + Parameter_Associations => New_List ( + Make_Selected_Component (Loc, + Prefix => New_Occurrence_Of (Stub_Ptr, Loc), + Selector_Name => Make_Identifier (Loc, Name_Target)))), + + -- E.4.1(9) A remote call is asynchronous if it is a call to + -- a procedure, or a call through a value of an access-to-procedure + -- type, to which a pragma Asynchronous applies. + + -- Parameter Asynch_P is true when the procedure is asynchronous; + -- Expression Asynch_T is true when the type is asynchronous. + + Set_Field (Name_Asynchronous, + Make_Or_Else (Loc, + New_Occurrence_Of (Asynch_P, Loc), + New_Occurrence_Of (Boolean_Literals ( + Is_Asynchronous (Ras_Type)), Loc))))); + + Append_List_To (Proc_Statements, + Build_Get_Unique_RP_Call (Loc, + Stub_Ptr, Stub_Elements.Stub_Type)); + + Append_To (Proc_Statements, + Make_Return_Statement (Loc, + Expression => + Unchecked_Convert_To (Fat_Type, + New_Occurrence_Of (Stub_Ptr, Loc)))); + + Proc_Spec := + Make_Function_Specification (Loc, + Defining_Unit_Name => Proc, + Parameter_Specifications => New_List ( + Make_Parameter_Specification (Loc, + Defining_Identifier => Package_Name, + Parameter_Type => + New_Occurrence_Of (Standard_String, Loc)), + + Make_Parameter_Specification (Loc, + Defining_Identifier => Subp_Id, + Parameter_Type => + New_Occurrence_Of (Standard_String, Loc)), + + Make_Parameter_Specification (Loc, + Defining_Identifier => Asynch_P, + Parameter_Type => + New_Occurrence_Of (Standard_Boolean, Loc)), + + Make_Parameter_Specification (Loc, + Defining_Identifier => All_Calls_Remote, + Parameter_Type => + New_Occurrence_Of (Standard_Boolean, Loc))), + + Subtype_Mark => + New_Occurrence_Of (Fat_Type, Loc)); + + -- Set the kind and return type of the function to prevent + -- ambiguities between Ras_Type and Fat_Type in subsequent analysis. + + Set_Ekind (Proc, E_Function); + Set_Etype (Proc, Fat_Type); + + Discard_Node ( + Make_Subprogram_Body (Loc, + Specification => Proc_Spec, + Declarations => Proc_Decls, + Handled_Statement_Sequence => + Make_Handled_Sequence_Of_Statements (Loc, + Statements => Proc_Statements))); + + Set_TSS (Fat_Type, Proc); + end Add_RAS_Access_TSS; + + ---------------------- + -- Add_RAS_From_Any -- + ---------------------- + + procedure Add_RAS_From_Any + (RAS_Type : Entity_Id; + Declarations : List_Id) + is + Loc : constant Source_Ptr := Sloc (RAS_Type); + + Fnam : constant Entity_Id := + Make_Defining_Identifier (Loc, New_Internal_Name ('F')); + + Func_Spec : Node_Id; + Func_Decl : Node_Id; + Func_Body : Node_Id; + + Statements : List_Id; + + Any_Parameter : constant Entity_Id := + Make_Defining_Identifier (Loc, Name_A); + + begin + Statements := New_List ( + Make_Return_Statement (Loc, + Expression => + Make_Aggregate (Loc, + Component_Associations => New_List ( + Make_Component_Association (Loc, + Choices => New_List ( + Make_Identifier (Loc, Name_Ras)), + Expression => + PolyORB_Support.Helpers.Build_From_Any_Call ( + Underlying_RACW_Type (RAS_Type), + New_Occurrence_Of (Any_Parameter, Loc), + No_List)))))); + + Func_Spec := + Make_Function_Specification (Loc, + Defining_Unit_Name => + Fnam, + Parameter_Specifications => New_List ( + Make_Parameter_Specification (Loc, + Defining_Identifier => + Any_Parameter, + Parameter_Type => + New_Occurrence_Of (RTE (RE_Any), Loc))), + Subtype_Mark => New_Occurrence_Of (RAS_Type, Loc)); + + -- NOTE: The usage occurrences of RACW_Parameter must + -- refer to the entity in the declaration spec, not those + -- of the body spec. + + Func_Decl := Make_Subprogram_Declaration (Loc, Func_Spec); + + Func_Body := + Make_Subprogram_Body (Loc, + Specification => + Copy_Specification (Loc, Func_Spec), + Declarations => No_List, + Handled_Statement_Sequence => + Make_Handled_Sequence_Of_Statements (Loc, + Statements => Statements)); + + Insert_After (Declaration_Node (RAS_Type), Func_Decl); + Append_To (Declarations, Func_Body); + + Set_Renaming_TSS (RAS_Type, Fnam, Name_uFrom_Any); + end Add_RAS_From_Any; + + -------------------- + -- Add_RAS_To_Any -- + -------------------- + + procedure Add_RAS_To_Any + (RAS_Type : Entity_Id; + Declarations : List_Id) + is + Loc : constant Source_Ptr := Sloc (RAS_Type); + + Fnam : Entity_Id; + + Decls : List_Id; + Statements : List_Id; + + Func_Spec : Node_Id; + Func_Decl : Node_Id; + Func_Body : Node_Id; + + Any : constant Entity_Id := + Make_Defining_Identifier (Loc, + Chars => New_Internal_Name ('A')); + RAS_Parameter : constant Entity_Id := + Make_Defining_Identifier (Loc, + Chars => New_Internal_Name ('R')); + RACW_Parameter : constant Node_Id := + Make_Selected_Component (Loc, + Prefix => + New_Occurrence_Of (RAS_Parameter, Loc), + Selector_Name => + Make_Identifier (Loc, Name_Ras)); + + begin + -- Object declarations + + Set_Etype (RACW_Parameter, Underlying_RACW_Type (RAS_Type)); + Decls := New_List ( + Make_Object_Declaration (Loc, + Defining_Identifier => + Any, + Object_Definition => + New_Occurrence_Of (RTE (RE_Any), Loc), + Expression => + PolyORB_Support.Helpers.Build_To_Any_Call + (RACW_Parameter, No_List))); + + Statements := New_List ( + Make_Procedure_Call_Statement (Loc, + Name => + New_Occurrence_Of (RTE (RE_Set_TC), Loc), + Parameter_Associations => New_List ( + New_Occurrence_Of (Any, Loc), + PolyORB_Support.Helpers.Build_TypeCode_Call (Loc, + RAS_Type, Decls))), + Make_Return_Statement (Loc, + Expression => + New_Occurrence_Of (Any, Loc))); + + Fnam := Make_Defining_Identifier ( + Loc, New_Internal_Name ('T')); + + Func_Spec := + Make_Function_Specification (Loc, + Defining_Unit_Name => + Fnam, + Parameter_Specifications => New_List ( + Make_Parameter_Specification (Loc, + Defining_Identifier => + RAS_Parameter, + Parameter_Type => + New_Occurrence_Of (RAS_Type, Loc))), + Subtype_Mark => New_Occurrence_Of (RTE (RE_Any), Loc)); + + -- NOTE: The usage occurrences of RAS_Parameter must + -- refer to the entity in the declaration spec, not in + -- the body spec. + + Func_Decl := Make_Subprogram_Declaration (Loc, Func_Spec); + + Func_Body := + Make_Subprogram_Body (Loc, + Specification => + Copy_Specification (Loc, Func_Spec), + Declarations => Decls, + Handled_Statement_Sequence => + Make_Handled_Sequence_Of_Statements (Loc, + Statements => Statements)); + + Insert_After (Declaration_Node (RAS_Type), Func_Decl); + Append_To (Declarations, Func_Body); + + Set_Renaming_TSS (RAS_Type, Fnam, Name_uTo_Any); + end Add_RAS_To_Any; + + ---------------------- + -- Add_RAS_TypeCode -- + ---------------------- + + procedure Add_RAS_TypeCode + (RAS_Type : Entity_Id; + Declarations : List_Id) + is + Loc : constant Source_Ptr := Sloc (RAS_Type); + + Fnam : Entity_Id; + + Func_Spec : Node_Id; + Func_Decl : Node_Id; + Func_Body : Node_Id; + + Decls : constant List_Id := New_List; + Name_String, Repo_Id_String : String_Id; + + RAS_Parameter : constant Entity_Id := + Make_Defining_Identifier (Loc, Name_R); + + begin + + Fnam := + Make_Defining_Identifier (Loc, + Chars => New_Internal_Name ('T')); + + -- The spec for this subprogram has a dummy 'access RAS' + -- argument, which serves only for overloading purposes. + + Func_Spec := + Make_Function_Specification (Loc, + Defining_Unit_Name => + Fnam, + Parameter_Specifications => New_List ( + Make_Parameter_Specification (Loc, + Defining_Identifier => + RAS_Parameter, + Parameter_Type => + Make_Access_Definition (Loc, + Subtype_Mark => New_Occurrence_Of (RAS_Type, Loc)))), + Subtype_Mark => New_Occurrence_Of (RTE (RE_TypeCode), Loc)); + + -- NOTE: The usage occurrences of RAS_Parameter must + -- refer to the entity in the declaration spec, not those + -- of the body spec. + + Func_Decl := Make_Subprogram_Declaration (Loc, Func_Spec); + + PolyORB_Support.Helpers.Build_Name_And_Repository_Id + (RAS_Type, Name_Str => Name_String, Repo_Id_Str => Repo_Id_String); + + Func_Body := + Make_Subprogram_Body (Loc, + Specification => + Copy_Specification (Loc, Func_Spec), + Declarations => Decls, + Handled_Statement_Sequence => + Make_Handled_Sequence_Of_Statements (Loc, + Statements => New_List ( + Make_Return_Statement (Loc, + Expression => + Make_Function_Call (Loc, + Name => + New_Occurrence_Of (RTE (RE_TC_Build), Loc), + Parameter_Associations => New_List ( + New_Occurrence_Of (RTE (RE_TC_Object), Loc), + Make_Aggregate (Loc, + Expressions => + New_List ( + Make_Function_Call (Loc, + Name => New_Occurrence_Of ( + RTE (RE_TA_String), Loc), + Parameter_Associations => New_List ( + Make_String_Literal (Loc, Name_String))), + Make_Function_Call (Loc, + Name => New_Occurrence_Of ( + RTE (RE_TA_String), Loc), + Parameter_Associations => New_List ( + Make_String_Literal (Loc, + Repo_Id_String))))))))))); + + Insert_After (Declaration_Node (RAS_Type), Func_Decl); + Append_To (Declarations, Func_Body); + + Set_Renaming_TSS (RAS_Type, Fnam, Name_uTypeCode); + end Add_RAS_TypeCode; + + --------------------------------- + -- Build_General_Calling_Stubs -- + --------------------------------- + + procedure Build_General_Calling_Stubs + (Decls : List_Id; + Statements : List_Id; + Target_Object : Node_Id; + Subprogram_Id : Node_Id; + Asynchronous : Node_Id := Empty; + Is_Known_Asynchronous : Boolean := False; + Is_Known_Non_Asynchronous : Boolean := False; + Is_Function : Boolean; + Spec : Node_Id; + Stub_Type : Entity_Id := Empty; + RACW_Type : Entity_Id := Empty; + Nod : Node_Id) + is + Loc : constant Source_Ptr := Sloc (Nod); + + Arguments : Node_Id; + -- Name of the named values list used to transmit parameters + -- to the remote package + + Request : Node_Id; + -- The request object constructed by these stubs. + + Result : Node_Id; + -- Name of the result named value (in non-APC cases) which get the + -- result of the remote subprogram. + + Result_TC : Node_Id; + -- Typecode expression for the result of the request (void + -- typecode for procedures). + + Exception_Return_Parameter : Node_Id; + -- Name of the parameter which will hold the exception sent by the + -- remote subprogram. + + Current_Parameter : Node_Id; + -- Current parameter being handled + + Ordered_Parameters_List : constant List_Id := + Build_Ordered_Parameters_List (Spec); + + Asynchronous_P : Node_Id; + -- A Boolean expression indicating whether this call is asynchronous + + Asynchronous_Statements : List_Id := No_List; + Non_Asynchronous_Statements : List_Id := No_List; + -- Statements specifics to the Asynchronous/Non-Asynchronous cases + + Extra_Formal_Statements : constant List_Id := New_List; + -- List of statements for extra formal parameters. It will appear + -- after the regular statements for writing out parameters. + + After_Statements : constant List_Id := New_List; + -- Statements to be executed after call returns (to assign + -- in out or out parameter values). + + Etyp : Entity_Id; + -- The type of the formal parameter being processed. + + Is_Controlling_Formal : Boolean; + Is_First_Controlling_Formal : Boolean; + First_Controlling_Formal_Seen : Boolean := False; + -- Controlling formal parameters of distributed object + -- primitives require special handling, and the first + -- such parameter needs even more. + + begin + -- ??? document general form of stub subprograms for the PolyORB case + Request := + Make_Defining_Identifier (Loc, New_Internal_Name ('R')); + + Append_To (Decls, + Make_Object_Declaration (Loc, + Defining_Identifier => Request, + Aliased_Present => False, + Object_Definition => + New_Occurrence_Of (RTE (RE_Request_Access), Loc))); + + Result := + Make_Defining_Identifier (Loc, New_Internal_Name ('R')); + + if Is_Function then + Result_TC := PolyORB_Support.Helpers.Build_TypeCode_Call (Loc, + Etype (Subtype_Mark (Spec)), Decls); + else + Result_TC := New_Occurrence_Of (RTE (RE_TC_Void), Loc); + end if; + + Append_To (Decls, + Make_Object_Declaration (Loc, + Defining_Identifier => Result, + Aliased_Present => False, + Object_Definition => + New_Occurrence_Of (RTE (RE_NamedValue), Loc), + Expression => + Make_Aggregate (Loc, + Component_Associations => New_List ( + Make_Component_Association (Loc, + Choices => New_List ( + Make_Identifier (Loc, Name_Name)), + Expression => + New_Occurrence_Of (RTE (RE_Result_Name), Loc)), + Make_Component_Association (Loc, + Choices => New_List ( + Make_Identifier (Loc, Name_Argument)), + Expression => + Make_Function_Call (Loc, + Name => + New_Occurrence_Of (RTE (RE_Create_Any), Loc), + Parameter_Associations => New_List ( + Result_TC))), + Make_Component_Association (Loc, + Choices => New_List ( + Make_Identifier (Loc, Name_Arg_Modes)), + Expression => + Make_Integer_Literal (Loc, 0)))))); + + if not Is_Known_Asynchronous then + Exception_Return_Parameter := + Make_Defining_Identifier (Loc, New_Internal_Name ('E')); + + Append_To (Decls, + Make_Object_Declaration (Loc, + Defining_Identifier => Exception_Return_Parameter, + Object_Definition => + New_Occurrence_Of (RTE (RE_Exception_Occurrence), Loc))); + + else + Exception_Return_Parameter := Empty; + end if; + + -- Initialize and fill in arguments list + + Arguments := + Make_Defining_Identifier (Loc, New_Internal_Name ('A')); + Declare_Create_NVList (Loc, Arguments, Decls, Statements); + + Current_Parameter := First (Ordered_Parameters_List); + while Present (Current_Parameter) loop + + if Is_RACW_Controlling_Formal (Current_Parameter, Stub_Type) then + Is_Controlling_Formal := True; + Is_First_Controlling_Formal := + not First_Controlling_Formal_Seen; + First_Controlling_Formal_Seen := True; + else + Is_Controlling_Formal := False; + Is_First_Controlling_Formal := False; + end if; + + if Is_Controlling_Formal then + + -- In the case of a controlling formal argument, we send + -- its reference. + + Etyp := RACW_Type; + + else + Etyp := Etype (Parameter_Type (Current_Parameter)); + end if; + + -- The first controlling formal parameter is treated + -- specially: it is used to set the target object of + -- the call. + + if not Is_First_Controlling_Formal then + + declare + Constrained : constant Boolean := + Is_Constrained (Etyp) + or else Is_Elementary_Type (Etyp); + + Any : constant Entity_Id := + Make_Defining_Identifier (Loc, + New_Internal_Name ('A')); + + Actual_Parameter : Node_Id := + New_Occurrence_Of ( + Defining_Identifier ( + Current_Parameter), Loc); + + Expr : Node_Id; + + begin + if Is_Controlling_Formal then + + -- For a controlling formal parameter (other + -- than the first one), use the corresponding + -- RACW. If the parameter is not an anonymous + -- access parameter, that involves taking + -- its 'Unrestricted_Access. + + if Nkind (Parameter_Type (Current_Parameter)) + = N_Access_Definition + then + Actual_Parameter := OK_Convert_To + (Etyp, Actual_Parameter); + else + Actual_Parameter := OK_Convert_To (Etyp, + Make_Attribute_Reference (Loc, + Prefix => + Actual_Parameter, + Attribute_Name => + Name_Unrestricted_Access)); + end if; + + end if; + + if In_Present (Current_Parameter) + or else not Out_Present (Current_Parameter) + or else not Constrained + or else Is_Controlling_Formal + then + -- The parameter has an input value, is constrained + -- at runtime by an input value, or is a controlling + -- formal parameter (always passed as a reference) + -- other than the first one. + + Expr := PolyORB_Support.Helpers.Build_To_Any_Call ( + Actual_Parameter, Decls); + else + Expr := Make_Function_Call (Loc, + Name => + New_Occurrence_Of (RTE (RE_Create_Any), Loc), + Parameter_Associations => New_List ( + PolyORB_Support.Helpers.Build_TypeCode_Call (Loc, + Etyp, Decls))); + end if; + + Append_To (Decls, + Make_Object_Declaration (Loc, + Defining_Identifier => + Any, + Aliased_Present => False, + Object_Definition => + New_Occurrence_Of (RTE (RE_Any), Loc), + Expression => + Expr)); + + Append_To (Statements, + Add_Parameter_To_NVList (Loc, + Parameter => Current_Parameter, + NVList => Arguments, + Constrained => Constrained, + Any => Any)); + + if Out_Present (Current_Parameter) + and then not Is_Controlling_Formal + then + Append_To (After_Statements, + Make_Assignment_Statement (Loc, + Name => + New_Occurrence_Of ( + Defining_Identifier (Current_Parameter), Loc), + Expression => + PolyORB_Support.Helpers.Build_From_Any_Call ( + Etype (Parameter_Type (Current_Parameter)), + New_Occurrence_Of (Any, Loc), + Decls))); + + end if; + end; + end if; + + -- If the current parameter has a dynamic constrained status, + -- then this status is transmitted as well. + -- This should be done for accessibility as well ??? + + if Nkind (Parameter_Type (Current_Parameter)) + /= N_Access_Definition + and then Need_Extra_Constrained (Current_Parameter) + then + -- In this block, we do not use the extra formal that has been + -- created because it does not exist at the time of expansion + -- when building calling stubs for remote access to subprogram + -- types. We create an extra variable of this type and push it + -- in the stream after the regular parameters. + + declare + Extra_Any_Parameter : constant Entity_Id := + Make_Defining_Identifier + (Loc, New_Internal_Name ('P')); + + begin + Append_To (Decls, + Make_Object_Declaration (Loc, + Defining_Identifier => + Extra_Any_Parameter, + Aliased_Present => False, + Object_Definition => + New_Occurrence_Of (RTE (RE_Any), Loc), + Expression => + PolyORB_Support.Helpers.Build_To_Any_Call ( + Make_Attribute_Reference (Loc, + Prefix => + New_Occurrence_Of ( + Defining_Identifier (Current_Parameter), Loc), + Attribute_Name => Name_Constrained), + Decls))); + Append_To (Extra_Formal_Statements, + Add_Parameter_To_NVList (Loc, + Parameter => Extra_Any_Parameter, + NVList => Arguments, + Constrained => True, + Any => Extra_Any_Parameter)); + end; + end if; + + Next (Current_Parameter); + end loop; + + -- Append the formal statements list to the statements + + Append_List_To (Statements, Extra_Formal_Statements); + + Append_To (Statements, + Make_Procedure_Call_Statement (Loc, + Name => + New_Occurrence_Of (RTE (RE_Request_Create), Loc), + Parameter_Associations => New_List ( + Target_Object, + Subprogram_Id, + New_Occurrence_Of (Arguments, Loc), + New_Occurrence_Of (Result, Loc), + New_Occurrence_Of (RTE (RE_Nil_Exc_List), Loc)))); + + Append_To (Parameter_Associations (Last (Statements)), + New_Occurrence_Of (Request, Loc)); + + pragma Assert ( + not (Is_Known_Non_Asynchronous and Is_Known_Asynchronous)); + if Is_Known_Non_Asynchronous or Is_Known_Asynchronous then + Asynchronous_P := New_Occurrence_Of ( + Boolean_Literals (Is_Known_Asynchronous), Loc); + else + pragma Assert (Present (Asynchronous)); + Asynchronous_P := New_Copy_Tree (Asynchronous); + -- The expression node Asynchronous will be used to build + -- an 'if' statement at the end of Build_General_Calling_Stubs: + -- we need to make a copy here. + end if; + + Append_To (Parameter_Associations (Last (Statements)), + Make_Indexed_Component (Loc, + Prefix => + New_Occurrence_Of ( + RTE (RE_Asynchronous_P_To_Sync_Scope), Loc), + Expressions => New_List (Asynchronous_P))); + + Append_To (Statements, + Make_Procedure_Call_Statement (Loc, + Name => + New_Occurrence_Of (RTE (RE_Request_Invoke), Loc), + Parameter_Associations => New_List ( + New_Occurrence_Of (Request, Loc)))); + + Non_Asynchronous_Statements := New_List (Make_Null_Statement (Loc)); + Asynchronous_Statements := New_List (Make_Null_Statement (Loc)); + + if not Is_Known_Asynchronous then + -- Reraise an exception occurrence from the completed request. + -- If the exception occurrence is empty, this is a no-op. + + Append_To (Non_Asynchronous_Statements, + Make_Procedure_Call_Statement (Loc, + Name => + New_Occurrence_Of (RTE (RE_Request_Raise_Occurrence), Loc), + Parameter_Associations => New_List ( + New_Occurrence_Of (Request, Loc)))); + + if Is_Function then + + -- If this is a function call, then read the value and + -- return it. + + Append_To (Non_Asynchronous_Statements, + Make_Tag_Check (Loc, + Make_Return_Statement (Loc, + PolyORB_Support.Helpers.Build_From_Any_Call ( + Etype (Subtype_Mark (Spec)), + Make_Selected_Component (Loc, + Prefix => + New_Occurrence_Of (Result, Loc), + Selector_Name => + Make_Identifier (Loc, Name_Argument)), + Decls)))); + end if; + end if; + + Append_List_To (Non_Asynchronous_Statements, + After_Statements); + + if Is_Known_Asynchronous then + Append_List_To (Statements, Asynchronous_Statements); + + elsif Is_Known_Non_Asynchronous then + Append_List_To (Statements, Non_Asynchronous_Statements); + + else + pragma Assert (Present (Asynchronous)); + Append_To (Statements, + Make_Implicit_If_Statement (Nod, + Condition => Asynchronous, + Then_Statements => Asynchronous_Statements, + Else_Statements => Non_Asynchronous_Statements)); + end if; + end Build_General_Calling_Stubs; + + ----------------------- + -- Build_Stub_Target -- + ----------------------- + + function Build_Stub_Target + (Loc : Source_Ptr; + Decls : List_Id; + RCI_Locator : Entity_Id; + Controlling_Parameter : Entity_Id) return RPC_Target + is + Target_Info : RPC_Target (PCS_Kind => Name_PolyORB_DSA); + Target_Reference : constant Entity_Id := + Make_Defining_Identifier (Loc, + New_Internal_Name ('T')); + begin + if Present (Controlling_Parameter) then + Append_To (Decls, + Make_Object_Declaration (Loc, + Defining_Identifier => Target_Reference, + Object_Definition => + New_Occurrence_Of (RTE (RE_Object_Ref), Loc), + Expression => + Make_Function_Call (Loc, + Name => + New_Occurrence_Of (RTE (RE_Make_Ref), Loc), + Parameter_Associations => New_List ( + Make_Selected_Component (Loc, + Prefix => + New_Occurrence_Of (Controlling_Parameter, Loc), + Selector_Name => + Make_Identifier (Loc, Name_Target)))))); + -- Controlling_Parameter has the same components + -- as System.Partition_Interface.RACW_Stub_Type. + + Target_Info.Object := New_Occurrence_Of (Target_Reference, Loc); + + else + Target_Info.Object := + Make_Selected_Component (Loc, + Prefix => + Make_Identifier (Loc, Chars (RCI_Locator)), + Selector_Name => + Make_Identifier (Loc, Name_Get_RCI_Package_Ref)); + end if; + return Target_Info; + end Build_Stub_Target; + + --------------------- + -- Build_Stub_Type -- + --------------------- + + procedure Build_Stub_Type + (RACW_Type : Entity_Id; + Stub_Type : Entity_Id; + Stub_Type_Decl : out Node_Id; + RPC_Receiver_Decl : out Node_Id) + is + Loc : constant Source_Ptr := Sloc (Stub_Type); + pragma Warnings (Off); + pragma Unreferenced (RACW_Type); + pragma Warnings (On); + + begin + Stub_Type_Decl := + Make_Full_Type_Declaration (Loc, + Defining_Identifier => Stub_Type, + Type_Definition => + Make_Record_Definition (Loc, + Tagged_Present => True, + Limited_Present => True, + Component_List => + Make_Component_List (Loc, + Component_Items => New_List ( + + Make_Component_Declaration (Loc, + Defining_Identifier => + Make_Defining_Identifier (Loc, Name_Target), + Component_Definition => + Make_Component_Definition (Loc, + Aliased_Present => + False, + Subtype_Indication => + New_Occurrence_Of (RTE (RE_Entity_Ptr), Loc))), + + Make_Component_Declaration (Loc, + Defining_Identifier => + Make_Defining_Identifier (Loc, Name_Asynchronous), + Component_Definition => + Make_Component_Definition (Loc, + Aliased_Present => False, + Subtype_Indication => + New_Occurrence_Of ( + Standard_Boolean, Loc))))))); + + RPC_Receiver_Decl := + Make_Object_Declaration (Loc, + Defining_Identifier => Make_Defining_Identifier (Loc, + New_Internal_Name ('R')), + Aliased_Present => True, + Object_Definition => + New_Occurrence_Of (RTE (RE_Servant), Loc)); + end Build_Stub_Type; + + -------------------------------------- + -- Build_RPC_Receiver_Specification -- + -------------------------------------- + + function Build_RPC_Receiver_Specification + (RPC_Receiver : Entity_Id; + Request_Parameter : Entity_Id) return Node_Id + is + Loc : constant Source_Ptr := Sloc (RPC_Receiver); + + begin + return + Make_Procedure_Specification (Loc, + Defining_Unit_Name => RPC_Receiver, + Parameter_Specifications => New_List ( + Make_Parameter_Specification (Loc, + Defining_Identifier => Request_Parameter, + Parameter_Type => + New_Occurrence_Of ( + RTE (RE_Request_Access), Loc)))); + end Build_RPC_Receiver_Specification; + + ------------- + -- Helpers -- + ------------- + + package body Helpers is + + ----------------------- + -- Local Subprograms -- + ----------------------- + + function Find_Inherited_TSS + (Typ : Entity_Id; + Nam : Name_Id) return Entity_Id; + -- A TSS reference for a representation aspect of a derived tagged + -- type must take into account inheritance of that aspect from + -- ancestor types. (copied from exp_attr.adb, should be shared???) + + function Find_Numeric_Representation + (Typ : Entity_Id) return Entity_Id; + -- Given a numeric type Typ, return the smallest integer or floarting + -- point type from Standard, or the smallest unsigned (modular) type + -- from System.Unsigned_Types, whose range encompasses that of Typ. + + function Make_Stream_Procedure_Function_Name + (Loc : Source_Ptr; + Typ : Entity_Id; + Nam : Name_Id) return Entity_Id; + -- Return the name to be assigned for stream subprogram Nam of Typ. + -- (copied from exp_strm.adb, should be shared???) + + ------------------------------------------------------------ + -- Common subprograms for building various tree fragments -- + ------------------------------------------------------------ + + function Build_Get_Aggregate_Element + (Loc : Source_Ptr; + Any : Entity_Id; + TC : Node_Id; + Idx : Node_Id) return Node_Id; + -- Build a call to Get_Aggregate_Element on Any + -- for typecode TC, returning the Idx'th element. + + generic + Subprogram : Entity_Id; + -- Reference location for constructed nodes + + Arry : Entity_Id; + -- For 'Range and Etype + + Indices : List_Id; + -- For the construction of the innermost element expression + + with procedure Add_Process_Element + (Stmts : List_Id; + Any : Entity_Id; + Counter : Entity_Id; + Datum : Node_Id); + + procedure Append_Array_Traversal + (Stmts : List_Id; + Any : Entity_Id; + Counter : Entity_Id := Empty; + Depth : Pos := 1); + -- Build nested loop statements that iterate over the elements of an + -- array Arry. The statement(s) built by Add_Process_Element are + -- executed for each element; Indices is the list of indices to be + -- used in the construction of the indexed component that denotes the + -- current element. Subprogram is the entity for the subprogram for + -- which this iterator is generated. The generated statements are + -- appended to Stmts. + + generic + Rec : Entity_Id; + -- The record entity being dealt with + + with procedure Add_Process_Element + (Stmts : List_Id; + Container : Node_Or_Entity_Id; + Counter : in out Int; + Rec : Entity_Id; + Field : Node_Id); + -- Rec is the instance of the record type, or Empty. + -- Field is either the N_Defining_Identifier for a component, + -- or an N_Variant_Part. + + procedure Append_Record_Traversal + (Stmts : List_Id; + Clist : Node_Id; + Container : Node_Or_Entity_Id; + Counter : in out Int); + -- Process component list Clist. Individual fields are passed + -- to Field_Processing. Each variant part is also processed. + -- Container is the outer Any (for From_Any/To_Any), + -- the outer typecode (for TC) to which the operation applies. + + ----------------------------- + -- Append_Record_Traversal -- + ----------------------------- + + procedure Append_Record_Traversal + (Stmts : List_Id; + Clist : Node_Id; + Container : Node_Or_Entity_Id; + Counter : in out Int) + is + CI : constant List_Id := Component_Items (Clist); + VP : constant Node_Id := Variant_Part (Clist); + + Item : Node_Id := First (CI); + Def : Entity_Id; + + begin + while Present (Item) loop + Def := Defining_Identifier (Item); + if not Is_Internal_Name (Chars (Def)) then + Add_Process_Element + (Stmts, Container, Counter, Rec, Def); + end if; + Next (Item); + end loop; + + if Present (VP) then + Add_Process_Element (Stmts, Container, Counter, Rec, VP); + end if; + end Append_Record_Traversal; + + ------------------------- + -- Build_From_Any_Call -- + ------------------------- + + function Build_From_Any_Call + (Typ : Entity_Id; + N : Node_Id; + Decls : List_Id) return Node_Id + is + Loc : constant Source_Ptr := Sloc (N); + + U_Type : Entity_Id := Underlying_Type (Typ); + + Fnam : Entity_Id := Empty; + Lib_RE : RE_Id := RE_Null; + + begin + + -- First simple case where the From_Any function is present + -- in the type's TSS. + + Fnam := Find_Inherited_TSS (U_Type, Name_uFrom_Any); + + if Sloc (U_Type) <= Standard_Location then + U_Type := Base_Type (U_Type); + end if; + + -- Check first for Boolean and Character. These are enumeration + -- types, but we treat them specially, since they may require + -- special handling in the transfer protocol. However, this + -- special handling only applies if they have standard + -- representation, otherwise they are treated like any other + -- enumeration type. + + if Present (Fnam) then + null; + + elsif U_Type = Standard_Boolean then + Lib_RE := RE_FA_B; + + elsif U_Type = Standard_Character then + Lib_RE := RE_FA_C; + + elsif U_Type = Standard_Wide_Character then + Lib_RE := RE_FA_WC; + + -- Floating point types + + elsif U_Type = Standard_Short_Float then + Lib_RE := RE_FA_SF; + + elsif U_Type = Standard_Float then + Lib_RE := RE_FA_F; + + elsif U_Type = Standard_Long_Float then + Lib_RE := RE_FA_LF; + + elsif U_Type = Standard_Long_Long_Float then + Lib_RE := RE_FA_LLF; + + -- Integer types + + elsif U_Type = Etype (Standard_Short_Short_Integer) then + Lib_RE := RE_FA_SSI; + + elsif U_Type = Etype (Standard_Short_Integer) then + Lib_RE := RE_FA_SI; + + elsif U_Type = Etype (Standard_Integer) then + Lib_RE := RE_FA_I; + + elsif U_Type = Etype (Standard_Long_Integer) then + Lib_RE := RE_FA_LI; + + elsif U_Type = Etype (Standard_Long_Long_Integer) then + Lib_RE := RE_FA_LLI; + + -- Unsigned integer types + + elsif U_Type = RTE (RE_Short_Short_Unsigned) then + Lib_RE := RE_FA_SSU; + + elsif U_Type = RTE (RE_Short_Unsigned) then + Lib_RE := RE_FA_SU; + + elsif U_Type = RTE (RE_Unsigned) then + Lib_RE := RE_FA_U; + + elsif U_Type = RTE (RE_Long_Unsigned) then + Lib_RE := RE_FA_LU; + + elsif U_Type = RTE (RE_Long_Long_Unsigned) then + Lib_RE := RE_FA_LLU; + + elsif U_Type = Standard_String then + Lib_RE := RE_FA_String; + + -- Other (non-primitive) types + + else + declare + Decl : Entity_Id; + begin + Build_From_Any_Function (Loc, U_Type, Decl, Fnam); + Append_To (Decls, Decl); + end; + end if; + + -- Call the function + + if Lib_RE /= RE_Null then + pragma Assert (No (Fnam)); + Fnam := RTE (Lib_RE); + end if; + + return + Make_Function_Call (Loc, + Name => New_Occurrence_Of (Fnam, Loc), + Parameter_Associations => New_List (N)); + end Build_From_Any_Call; + + ----------------------------- + -- Build_From_Any_Function -- + ----------------------------- + + procedure Build_From_Any_Function + (Loc : Source_Ptr; + Typ : Entity_Id; + Decl : out Node_Id; + Fnam : out Entity_Id) + is + Spec : Node_Id; + Decls : constant List_Id := New_List; + Stms : constant List_Id := New_List; + Any_Parameter : constant Entity_Id + := Make_Defining_Identifier (Loc, New_Internal_Name ('A')); + begin + Fnam := Make_Stream_Procedure_Function_Name (Loc, + Typ, Name_uFrom_Any); + + Spec := + Make_Function_Specification (Loc, + Defining_Unit_Name => Fnam, + Parameter_Specifications => New_List ( + Make_Parameter_Specification (Loc, + Defining_Identifier => + Any_Parameter, + Parameter_Type => + New_Occurrence_Of (RTE (RE_Any), Loc))), + Subtype_Mark => New_Occurrence_Of (Typ, Loc)); + + -- The following is taken care of by Exp_Dist.Add_RACW_From_Any + + pragma Assert + (not (Is_Remote_Access_To_Class_Wide_Type (Typ))); + + + if Is_Derived_Type (Typ) + and then not Is_Tagged_Type (Typ) + then + Append_To (Stms, + Make_Return_Statement (Loc, + Expression => + OK_Convert_To ( + Typ, + Build_From_Any_Call ( + Root_Type (Typ), + New_Occurrence_Of (Any_Parameter, Loc), + Decls)))); + + elsif Is_Record_Type (Typ) + and then not Is_Derived_Type (Typ) + and then not Is_Tagged_Type (Typ) + then + if Nkind (Declaration_Node (Typ)) = N_Subtype_Declaration then + Append_To (Stms, + Make_Return_Statement (Loc, + Expression => + OK_Convert_To ( + Typ, + Build_From_Any_Call ( + Etype (Typ), + New_Occurrence_Of (Any_Parameter, Loc), + Decls)))); + else + declare + Disc : Entity_Id := Empty; + Discriminant_Associations : List_Id; + Rdef : constant Node_Id := + Type_Definition (Declaration_Node (Typ)); + Component_Counter : Int := 0; + + -- The returned object + + Res : constant Entity_Id := + Make_Defining_Identifier (Loc, + New_Internal_Name ('R')); + + Res_Definition : Node_Id := New_Occurrence_Of (Typ, Loc); + + procedure FA_Rec_Add_Process_Element + (Stmts : List_Id; + Any : Entity_Id; + Counter : in out Int; + Rec : Entity_Id; + Field : Node_Id); + + procedure FA_Append_Record_Traversal is + new Append_Record_Traversal + (Rec => Res, + Add_Process_Element => FA_Rec_Add_Process_Element); + + -------------------------------- + -- FA_Rec_Add_Process_Element -- + -------------------------------- + + procedure FA_Rec_Add_Process_Element + (Stmts : List_Id; + Any : Entity_Id; + Counter : in out Int; + Rec : Entity_Id; + Field : Node_Id) + is + begin + if Nkind (Field) = N_Defining_Identifier then + + -- A regular component + + Append_To (Stmts, + Make_Assignment_Statement (Loc, + Name => Make_Selected_Component (Loc, + Prefix => + New_Occurrence_Of (Rec, Loc), + Selector_Name => + New_Occurrence_Of (Field, Loc)), + Expression => + Build_From_Any_Call (Etype (Field), + Build_Get_Aggregate_Element (Loc, + Any => Any, + Tc => Build_TypeCode_Call (Loc, + Etype (Field), Decls), + Idx => Make_Integer_Literal (Loc, + Counter)), + Decls))); + + else + -- A variant part + + declare + Variant : Node_Id; + Struct_Counter : Int := 0; + + Block_Decls : constant List_Id := New_List; + Block_Stmts : constant List_Id := New_List; + VP_Stmts : List_Id; + + Alt_List : constant List_Id := New_List; + Choice_List : List_Id; + + Struct_Any : constant Entity_Id := + Make_Defining_Identifier (Loc, + New_Internal_Name ('S')); + + begin + Append_To (Decls, + Make_Object_Declaration (Loc, + Defining_Identifier => + Struct_Any, + Constant_Present => + True, + Object_Definition => + New_Occurrence_Of (RTE (RE_Any), Loc), + Expression => + Make_Function_Call (Loc, + Name => New_Occurrence_Of ( + RTE (RE_Extract_Union_Value), Loc), + Parameter_Associations => New_List ( + Build_Get_Aggregate_Element (Loc, + Any => Any, + Tc => Make_Function_Call (Loc, + Name => New_Occurrence_Of ( + RTE (RE_Any_Member_Type), Loc), + Parameter_Associations => + New_List ( + New_Occurrence_Of (Any, Loc), + Make_Integer_Literal (Loc, + Counter))), + Idx => Make_Integer_Literal (Loc, + Counter)))))); + + Append_To (Stmts, + Make_Block_Statement (Loc, + Declarations => + Block_Decls, + Handled_Statement_Sequence => + Make_Handled_Sequence_Of_Statements (Loc, + Statements => Block_Stmts))); + + Append_To (Block_Stmts, + Make_Case_Statement (Loc, + Expression => + Make_Selected_Component (Loc, + Prefix => + New_Occurrence_Of (Rec, Loc), + Selector_Name => + New_Occurrence_Of ( + Entity (Name (Field)), Loc)), + Alternatives => + Alt_List)); + + Variant := First_Non_Pragma (Variants (Field)); + + while Present (Variant) loop + Choice_List := New_Copy_List_Tree + (Discrete_Choices (Variant)); + + VP_Stmts := New_List; + FA_Append_Record_Traversal ( + Stmts => VP_Stmts, + Clist => Component_List (Variant), + Container => Struct_Any, + Counter => Struct_Counter); + + Append_To (Alt_List, + Make_Case_Statement_Alternative (Loc, + Discrete_Choices => Choice_List, + Statements => + VP_Stmts)); + Next_Non_Pragma (Variant); + end loop; + end; + end if; + Counter := Counter + 1; + end FA_Rec_Add_Process_Element; + + begin + -- First all discriminants + + if Has_Discriminants (Typ) then + Disc := First_Discriminant (Typ); + Discriminant_Associations := New_List; + + while Present (Disc) loop + declare + Disc_Var_Name : constant Entity_Id := + Make_Defining_Identifier (Loc, Chars (Disc)); + Disc_Type : constant Entity_Id := + Etype (Disc); + begin + Append_To (Decls, + Make_Object_Declaration (Loc, + Defining_Identifier => + Disc_Var_Name, + Constant_Present => True, + Object_Definition => + New_Occurrence_Of (Disc_Type, Loc), + Expression => + Build_From_Any_Call (Etype (Disc), + Build_Get_Aggregate_Element (Loc, + Any => Any_Parameter, + Tc => Build_TypeCode_Call + (Loc, Etype (Disc), Decls), + Idx => Make_Integer_Literal + (Loc, Component_Counter)), + Decls))); + Component_Counter := Component_Counter + 1; + + Append_To (Discriminant_Associations, + Make_Discriminant_Association (Loc, + Selector_Names => New_List ( + New_Occurrence_Of (Disc, Loc)), + Expression => + New_Occurrence_Of (Disc_Var_Name, Loc))); + end; + Next_Discriminant (Disc); + end loop; + + Res_Definition := Make_Subtype_Indication (Loc, + Subtype_Mark => Res_Definition, + Constraint => + Make_Index_Or_Discriminant_Constraint (Loc, + Discriminant_Associations)); + end if; + + -- Now we have all the discriminants in variables, we can + -- declared a constrained object. Note that we are not + -- initializing (non-discriminant) components directly in + -- the object declarations, because which fields to + -- initialize depends (at run time) on the discriminant + -- values. + + Append_To (Decls, + Make_Object_Declaration (Loc, + Defining_Identifier => + Res, + Object_Definition => + Res_Definition)); + + -- ... then all components + + FA_Append_Record_Traversal (Stms, + Clist => Component_List (Rdef), + Container => Any_Parameter, + Counter => Component_Counter); + + Append_To (Stms, + Make_Return_Statement (Loc, + Expression => New_Occurrence_Of (Res, Loc))); + end; + end if; + + elsif Is_Array_Type (Typ) then + declare + Constrained : constant Boolean := Is_Constrained (Typ); + + procedure FA_Ary_Add_Process_Element + (Stmts : List_Id; + Any : Entity_Id; + Counter : Entity_Id; + Datum : Node_Id); + -- Assign the current element (as identified by Counter) of + -- Any to the variable denoted by name Datum, and advance + -- Counter by 1. If Datum is not an Any, a call to From_Any + -- for its type is inserted. + + -------------------------------- + -- FA_Ary_Add_Process_Element -- + -------------------------------- + + procedure FA_Ary_Add_Process_Element + (Stmts : List_Id; + Any : Entity_Id; + Counter : Entity_Id; + Datum : Node_Id) + is + Assignment : constant Node_Id := + Make_Assignment_Statement (Loc, + Name => Datum, + Expression => Empty); + + Element_Any : constant Node_Id := + Build_Get_Aggregate_Element (Loc, + Any => Any, + Tc => Build_TypeCode_Call (Loc, + Etype (Datum), Decls), + Idx => New_Occurrence_Of (Counter, Loc)); + + begin + -- Note: here we *prepend* statements to Stmts, so + -- we must do it in reverse order. + + Prepend_To (Stmts, + Make_Assignment_Statement (Loc, + Name => + New_Occurrence_Of (Counter, Loc), + Expression => + Make_Op_Add (Loc, + Left_Opnd => + New_Occurrence_Of (Counter, Loc), + Right_Opnd => + Make_Integer_Literal (Loc, 1)))); + + if Nkind (Datum) /= N_Attribute_Reference then + + -- We ignore the value of the length of each + -- dimension, since the target array has already + -- been constrained anyway. + + if Etype (Datum) /= RTE (RE_Any) then + Set_Expression (Assignment, + Build_From_Any_Call ( + Component_Type (Typ), + Element_Any, + Decls)); + else + Set_Expression (Assignment, Element_Any); + end if; + Prepend_To (Stmts, Assignment); + end if; + end FA_Ary_Add_Process_Element; + + Counter : constant Entity_Id := + Make_Defining_Identifier (Loc, Name_J); + + Initial_Counter_Value : Int := 0; + + Component_TC : constant Entity_Id := + Make_Defining_Identifier (Loc, Name_T); + + Res : constant Entity_Id := + Make_Defining_Identifier (Loc, Name_R); + + procedure Append_From_Any_Array_Iterator is + new Append_Array_Traversal ( + Subprogram => Fnam, + Arry => Res, + Indices => New_List, + Add_Process_Element => FA_Ary_Add_Process_Element); + + Res_Subtype_Indication : Node_Id := + New_Occurrence_Of (Typ, Loc); + + begin + if not Constrained then + declare + Ndim : constant Int := Number_Dimensions (Typ); + Lnam : Name_Id; + Hnam : Name_Id; + Indx : Node_Id := First_Index (Typ); + Indt : Entity_Id; + + Ranges : constant List_Id := New_List; + + begin + for J in 1 .. Ndim loop + Lnam := New_External_Name ('L', J); + Hnam := New_External_Name ('H', J); + Indt := Etype (Indx); + + Append_To (Decls, + Make_Object_Declaration (Loc, + Defining_Identifier => + Make_Defining_Identifier (Loc, Lnam), + Constant_Present => + True, + Object_Definition => + New_Occurrence_Of (Indt, Loc), + Expression => + Build_From_Any_Call ( + Indt, + Build_Get_Aggregate_Element (Loc, + Any => Any_Parameter, + Tc => Build_TypeCode_Call (Loc, + Indt, Decls), + Idx => Make_Integer_Literal (Loc, J - 1)), + Decls))); + + Append_To (Decls, + Make_Object_Declaration (Loc, + Defining_Identifier => + Make_Defining_Identifier (Loc, Hnam), + Constant_Present => + True, + Object_Definition => + New_Occurrence_Of (Indt, Loc), + Expression => Make_Attribute_Reference (Loc, + Prefix => + New_Occurrence_Of (Indt, Loc), + Attribute_Name => Name_Val, + Expressions => New_List ( + Make_Op_Subtract (Loc, + Left_Opnd => + Make_Op_Add (Loc, + Left_Opnd => + Make_Attribute_Reference (Loc, + Prefix => + New_Occurrence_Of (Indt, Loc), + Attribute_Name => + Name_Pos, + Expressions => New_List ( + Make_Identifier (Loc, Lnam))), + Right_Opnd => + Make_Function_Call (Loc, + Name => New_Occurrence_Of (RTE ( + RE_Get_Nested_Sequence_Length), + Loc), + Parameter_Associations => + New_List ( + New_Occurrence_Of ( + Any_Parameter, Loc), + Make_Integer_Literal (Loc, + J)))), + Right_Opnd => + Make_Integer_Literal (Loc, 1)))))); + + Append_To (Ranges, + Make_Range (Loc, + Low_Bound => Make_Identifier (Loc, Lnam), + High_Bound => Make_Identifier (Loc, Hnam))); + + Next_Index (Indx); + end loop; + + -- Now we have all the necessary bound information: + -- apply the set of range constraints to the + -- (unconstrained) nominal subtype of Res. + + Initial_Counter_Value := Ndim; + Res_Subtype_Indication := Make_Subtype_Indication (Loc, + Subtype_Mark => + Res_Subtype_Indication, + Constraint => + Make_Index_Or_Discriminant_Constraint (Loc, + Constraints => Ranges)); + end; + end if; + + Append_To (Decls, + Make_Object_Declaration (Loc, + Defining_Identifier => Res, + Object_Definition => Res_Subtype_Indication)); + Set_Etype (Res, Typ); + + Append_To (Decls, + Make_Object_Declaration (Loc, + Defining_Identifier => Counter, + Object_Definition => + New_Occurrence_Of (RTE (RE_Long_Unsigned), Loc), + Expression => + Make_Integer_Literal (Loc, Initial_Counter_Value))); + + Append_To (Decls, + Make_Object_Declaration (Loc, + Defining_Identifier => Component_TC, + Constant_Present => True, + Object_Definition => + New_Occurrence_Of (RTE (RE_TypeCode), Loc), + Expression => + Build_TypeCode_Call (Loc, + Component_Type (Typ), Decls))); + + Append_From_Any_Array_Iterator (Stms, + Any_Parameter, Counter); + + Append_To (Stms, + Make_Return_Statement (Loc, + Expression => New_Occurrence_Of (Res, Loc))); + end; + + elsif Is_Integer_Type (Typ) or else Is_Unsigned_Type (Typ) then + Append_To (Stms, + Make_Return_Statement (Loc, + Expression => + Unchecked_Convert_To ( + Typ, + Build_From_Any_Call ( + Find_Numeric_Representation (Typ), + New_Occurrence_Of (Any_Parameter, Loc), + Decls)))); + + else + -- Default: type is represented as an opaque sequence of bytes + + declare + Strm : constant Entity_Id := + Make_Defining_Identifier (Loc, + Chars => New_Internal_Name ('S')); + Res : constant Entity_Id := + Make_Defining_Identifier (Loc, + Chars => New_Internal_Name ('R')); + + begin + -- Strm : Buffer_Stream_Type; + + Append_To (Decls, + Make_Object_Declaration (Loc, + Defining_Identifier => + Strm, + Aliased_Present => + True, + Object_Definition => + New_Occurrence_Of (RTE (RE_Buffer_Stream_Type), Loc))); + + -- Any_To_BS (Strm, A); + + Append_To (Stms, + Make_Procedure_Call_Statement (Loc, + Name => + New_Occurrence_Of (RTE (RE_Any_To_BS), Loc), + Parameter_Associations => New_List ( + New_Occurrence_Of (Any_Parameter, Loc), + New_Occurrence_Of (Strm, Loc)))); + + -- declare + -- Res : constant T := T'Input (Strm); + -- begin + -- Release_Buffer (Strm); + -- return Res; + -- end; + + Append_To (Stms, Make_Block_Statement (Loc, + Declarations => New_List ( + Make_Object_Declaration (Loc, + Defining_Identifier => Res, + Constant_Present => True, + Object_Definition => + New_Occurrence_Of (Typ, Loc), + Expression => + Make_Attribute_Reference (Loc, + Prefix => New_Occurrence_Of (Typ, Loc), + Attribute_Name => Name_Input, + Expressions => New_List ( + Make_Attribute_Reference (Loc, + Prefix => New_Occurrence_Of (Strm, Loc), + Attribute_Name => Name_Access))))), + + Handled_Statement_Sequence => + Make_Handled_Sequence_Of_Statements (Loc, + Statements => New_List ( + Make_Procedure_Call_Statement (Loc, + Name => + New_Occurrence_Of (RTE (RE_Release_Buffer), Loc), + Parameter_Associations => + New_List ( + New_Occurrence_Of (Strm, Loc))), + Make_Return_Statement (Loc, + Expression => New_Occurrence_Of (Res, Loc)))))); + + end; + end if; + + Decl := + Make_Subprogram_Body (Loc, + Specification => Spec, + Declarations => Decls, + Handled_Statement_Sequence => + Make_Handled_Sequence_Of_Statements (Loc, + Statements => Stms)); + end Build_From_Any_Function; + + --------------------------------- + -- Build_Get_Aggregate_Element -- + --------------------------------- + + function Build_Get_Aggregate_Element + (Loc : Source_Ptr; + Any : Entity_Id; + TC : Node_Id; + Idx : Node_Id) return Node_Id + is + begin + return Make_Function_Call (Loc, + Name => + New_Occurrence_Of ( + RTE (RE_Get_Aggregate_Element), Loc), + Parameter_Associations => New_List ( + New_Occurrence_Of (Any, Loc), + TC, + Idx)); + end Build_Get_Aggregate_Element; + + ------------------------- + -- Build_Reposiroty_Id -- + ------------------------- + + procedure Build_Name_And_Repository_Id + (E : Entity_Id; + Name_Str : out String_Id; + Repo_Id_Str : out String_Id) + is + begin + Start_String; + Store_String_Chars ("DSA:"); + Get_Library_Unit_Name_String (Scope (E)); + Store_String_Chars ( + Name_Buffer (Name_Buffer'First + .. Name_Buffer'First + Name_Len - 1)); + Store_String_Char ('.'); + Get_Name_String (Chars (E)); + Store_String_Chars ( + Name_Buffer (Name_Buffer'First + .. Name_Buffer'First + Name_Len - 1)); + Store_String_Chars (":1.0"); + Repo_Id_Str := End_String; + Name_Str := String_From_Name_Buffer; + end Build_Name_And_Repository_Id; + + ----------------------- + -- Build_To_Any_Call -- + ----------------------- + + function Build_To_Any_Call + (N : Node_Id; + Decls : List_Id) return Node_Id + is + Loc : constant Source_Ptr := Sloc (N); + + Typ : Entity_Id := Etype (N); + U_Type : Entity_Id; + + Fnam : Entity_Id := Empty; + Lib_RE : RE_Id := RE_Null; + + begin + -- If N is a selected component, then maybe its Etype + -- has not been set yet: try to use the Etype of the + -- selector_name in that case. + + if No (Typ) and then Nkind (N) = N_Selected_Component then + Typ := Etype (Selector_Name (N)); + end if; + pragma Assert (Present (Typ)); + + -- The full view, if Typ is private; the completion, + -- if Typ is incomplete. + + U_Type := Underlying_Type (Typ); + + -- First simple case where the To_Any function is present + -- in the type's TSS. + + Fnam := Find_Inherited_TSS (U_Type, Name_uTo_Any); + + -- Check first for Boolean and Character. These are enumeration + -- types, but we treat them specially, since they may require + -- special handling in the transfer protocol. However, this + -- special handling only applies if they have standard + -- representation, otherwise they are treated like any other + -- enumeration type. + + if Sloc (U_Type) <= Standard_Location then + U_Type := Base_Type (U_Type); + end if; + + if Present (Fnam) then + null; + + elsif U_Type = Standard_Boolean then + Lib_RE := RE_TA_B; + + elsif U_Type = Standard_Character then + Lib_RE := RE_TA_C; + + elsif U_Type = Standard_Wide_Character then + Lib_RE := RE_TA_WC; + + -- Floating point types + + elsif U_Type = Standard_Short_Float then + Lib_RE := RE_TA_SF; + + elsif U_Type = Standard_Float then + Lib_RE := RE_TA_F; + + elsif U_Type = Standard_Long_Float then + Lib_RE := RE_TA_LF; + + elsif U_Type = Standard_Long_Long_Float then + Lib_RE := RE_TA_LLF; + + -- Integer types + + elsif U_Type = Etype (Standard_Short_Short_Integer) then + Lib_RE := RE_TA_SSI; + + elsif U_Type = Etype (Standard_Short_Integer) then + Lib_RE := RE_TA_SI; + + elsif U_Type = Etype (Standard_Integer) then + Lib_RE := RE_TA_I; + + elsif U_Type = Etype (Standard_Long_Integer) then + Lib_RE := RE_TA_LI; + + elsif U_Type = Etype (Standard_Long_Long_Integer) then + Lib_RE := RE_TA_LLI; + + -- Unsigned integer types + + elsif U_Type = RTE (RE_Short_Short_Unsigned) then + Lib_RE := RE_TA_SSU; + + elsif U_Type = RTE (RE_Short_Unsigned) then + Lib_RE := RE_TA_SU; + + elsif U_Type = RTE (RE_Unsigned) then + Lib_RE := RE_TA_U; + + elsif U_Type = RTE (RE_Long_Unsigned) then + Lib_RE := RE_TA_LU; + + elsif U_Type = RTE (RE_Long_Long_Unsigned) then + Lib_RE := RE_TA_LLU; + + elsif U_Type = Standard_String then + Lib_RE := RE_TA_String; + + elsif U_Type = Underlying_Type (RTE (RE_TypeCode)) then + Lib_RE := RE_TA_TC; + + -- Other (non-primitive) types + + else + declare + Decl : Entity_Id; + begin + Build_To_Any_Function (Loc, U_Type, Decl, Fnam); + Append_To (Decls, Decl); + end; + end if; + + -- Call the function + + if Lib_RE /= RE_Null then + pragma Assert (No (Fnam)); + Fnam := RTE (Lib_RE); + end if; + + return + Make_Function_Call (Loc, + Name => New_Occurrence_Of (Fnam, Loc), + Parameter_Associations => New_List (N)); + end Build_To_Any_Call; + + --------------------------- + -- Build_To_Any_Function -- + --------------------------- + + procedure Build_To_Any_Function + (Loc : Source_Ptr; + Typ : Entity_Id; + Decl : out Node_Id; + Fnam : out Entity_Id) + is + Spec : Node_Id; + Decls : constant List_Id := New_List; + Stms : constant List_Id := New_List; + + Expr_Parameter : constant Entity_Id := + Make_Defining_Identifier (Loc, Name_E); + + Any : constant Entity_Id := + Make_Defining_Identifier (Loc, Name_A); + + Any_Decl : Node_Id; + Result_TC : Node_Id := Build_TypeCode_Call (Loc, Typ, Decls); + + begin + Fnam := Make_Stream_Procedure_Function_Name (Loc, + Typ, Name_uTo_Any); + + Spec := + Make_Function_Specification (Loc, + Defining_Unit_Name => Fnam, + Parameter_Specifications => New_List ( + Make_Parameter_Specification (Loc, + Defining_Identifier => + Expr_Parameter, + Parameter_Type => + New_Occurrence_Of (Typ, Loc))), + Subtype_Mark => New_Occurrence_Of (RTE (RE_Any), Loc)); + Set_Etype (Expr_Parameter, Typ); + + Any_Decl := + Make_Object_Declaration (Loc, + Defining_Identifier => + Any, + Object_Definition => + New_Occurrence_Of (RTE (RE_Any), Loc)); + + if Is_Derived_Type (Typ) and then not Is_Tagged_Type (Typ) then + declare + Rt_Type : constant Entity_Id + := Root_Type (Typ); + Expr : constant Node_Id + := OK_Convert_To ( + Rt_Type, + New_Occurrence_Of (Expr_Parameter, Loc)); + begin + Set_Expression (Any_Decl, Build_To_Any_Call (Expr, Decls)); + end; + + elsif Is_Record_Type (Typ) and then not Is_Tagged_Type (Typ) then + if Nkind (Declaration_Node (Typ)) = N_Subtype_Declaration then + declare + Rt_Type : constant Entity_Id + := Etype (Typ); + Expr : constant Node_Id + := OK_Convert_To ( + Rt_Type, + New_Occurrence_Of (Expr_Parameter, Loc)); + + begin + Set_Expression (Any_Decl, + Build_To_Any_Call (Expr, Decls)); + end; + + else + declare + Disc : Entity_Id := Empty; + Rdef : constant Node_Id := + Type_Definition (Declaration_Node (Typ)); + Counter : Int := 0; + Elements : constant List_Id := New_List; + + procedure TA_Rec_Add_Process_Element + (Stmts : List_Id; + Container : Node_Or_Entity_Id; + Counter : in out Int; + Rec : Entity_Id; + Field : Node_Id); + + procedure TA_Append_Record_Traversal is + new Append_Record_Traversal + (Rec => Expr_Parameter, + Add_Process_Element => TA_Rec_Add_Process_Element); + + -------------------------------- + -- TA_Rec_Add_Process_Element -- + -------------------------------- + + procedure TA_Rec_Add_Process_Element + (Stmts : List_Id; + Container : Node_Or_Entity_Id; + Counter : in out Int; + Rec : Entity_Id; + Field : Node_Id) + is + Field_Ref : Node_Id; + + begin + if Nkind (Field) = N_Defining_Identifier then + + -- A regular component + + Field_Ref := Make_Selected_Component (Loc, + Prefix => New_Occurrence_Of (Rec, Loc), + Selector_Name => New_Occurrence_Of (Field, Loc)); + Set_Etype (Field_Ref, Etype (Field)); + + Append_To (Stmts, + Make_Procedure_Call_Statement (Loc, + Name => + New_Occurrence_Of ( + RTE (RE_Add_Aggregate_Element), Loc), + Parameter_Associations => New_List ( + New_Occurrence_Of (Any, Loc), + Build_To_Any_Call (Field_Ref, Decls)))); + + else + -- A variant part + + declare + Variant : Node_Id; + Struct_Counter : Int := 0; + + Block_Decls : constant List_Id := New_List; + Block_Stmts : constant List_Id := New_List; + VP_Stmts : List_Id; + + Alt_List : constant List_Id := New_List; + Choice_List : List_Id; + + Union_Any : constant Entity_Id := + Make_Defining_Identifier (Loc, + New_Internal_Name ('U')); + + Struct_Any : constant Entity_Id := + Make_Defining_Identifier (Loc, + New_Internal_Name ('S')); + + function Make_Discriminant_Reference + return Node_Id; + -- Build a selected component for the + -- discriminant of this variant part. + + --------------------------------- + -- Make_Discriminant_Reference -- + --------------------------------- + + function Make_Discriminant_Reference + return Node_Id + is + Nod : constant Node_Id := + Make_Selected_Component (Loc, + Prefix => + New_Occurrence_Of (Rec, Loc), + Selector_Name => + New_Occurrence_Of ( + Entity (Name (Field)), Loc)); + begin + Set_Etype (Nod, Name (Field)); + return Nod; + end Make_Discriminant_Reference; + + begin + Append_To (Stmts, + Make_Block_Statement (Loc, + Declarations => + Block_Decls, + Handled_Statement_Sequence => + Make_Handled_Sequence_Of_Statements (Loc, + Statements => Block_Stmts))); + + Append_To (Block_Decls, + Make_Object_Declaration (Loc, + Defining_Identifier => Union_Any, + Object_Definition => + New_Occurrence_Of (RTE (RE_Any), Loc), + Expression => + Make_Function_Call (Loc, + Name => New_Occurrence_Of ( + RTE (RE_Create_Any), Loc), + Parameter_Associations => New_List ( + Make_Function_Call (Loc, + Name => + New_Occurrence_Of ( + RTE (RE_Any_Member_Type), Loc), + Parameter_Associations => New_List ( + New_Occurrence_Of (Container, Loc), + Make_Integer_Literal (Loc, + Counter))))))); + + Append_To (Block_Decls, + Make_Object_Declaration (Loc, + Defining_Identifier => Struct_Any, + Object_Definition => + New_Occurrence_Of (RTE (RE_Any), Loc), + Expression => + Make_Function_Call (Loc, + Name => New_Occurrence_Of ( + RTE (RE_Create_Any), Loc), + Parameter_Associations => New_List ( + Make_Function_Call (Loc, + Name => + New_Occurrence_Of ( + RTE (RE_Any_Member_Type), Loc), + Parameter_Associations => New_List ( + New_Occurrence_Of (Union_Any, Loc), + Make_Integer_Literal (Loc, + Uint_0))))))); + + Append_To (Block_Stmts, + Make_Case_Statement (Loc, + Expression => + Make_Discriminant_Reference, + Alternatives => + Alt_List)); + + Variant := First_Non_Pragma (Variants (Field)); + while Present (Variant) loop + Choice_List := New_Copy_List_Tree + (Discrete_Choices (Variant)); + + VP_Stmts := New_List; + TA_Append_Record_Traversal ( + Stmts => VP_Stmts, + Clist => Component_List (Variant), + Container => Struct_Any, + Counter => Struct_Counter); + + -- Append discriminant value and inner struct + -- to union aggregate. + + Append_To (VP_Stmts, + Make_Procedure_Call_Statement (Loc, + Name => + New_Occurrence_Of ( + RTE (RE_Add_Aggregate_Element), Loc), + Parameter_Associations => New_List ( + New_Occurrence_Of (Union_Any, Loc), + Build_To_Any_Call ( + Make_Discriminant_Reference, + Block_Decls)))); + + Append_To (VP_Stmts, + Make_Procedure_Call_Statement (Loc, + Name => + New_Occurrence_Of ( + RTE (RE_Add_Aggregate_Element), Loc), + Parameter_Associations => New_List ( + New_Occurrence_Of (Union_Any, Loc), + New_Occurrence_Of (Struct_Any, Loc)))); + + -- Append union to outer aggregate + + Append_To (VP_Stmts, + Make_Procedure_Call_Statement (Loc, + Name => + New_Occurrence_Of ( + RTE (RE_Add_Aggregate_Element), Loc), + Parameter_Associations => New_List ( + New_Occurrence_Of (Container, Loc), + Make_Function_Call (Loc, + Name => New_Occurrence_Of ( + RTE (RE_Any_Aggregate_Build), Loc), + Parameter_Associations => New_List ( + New_Occurrence_Of ( + Union_Any, Loc)))))); + + Append_To (Alt_List, + Make_Case_Statement_Alternative (Loc, + Discrete_Choices => Choice_List, + Statements => + VP_Stmts)); + Next_Non_Pragma (Variant); + end loop; + end; + end if; + end TA_Rec_Add_Process_Element; + + begin + -- First all discriminants + + if Has_Discriminants (Typ) then + Disc := First_Discriminant (Typ); + + while Present (Disc) loop + Append_To (Elements, + Make_Component_Association (Loc, + Choices => New_List ( + Make_Integer_Literal (Loc, Counter)), + Expression => + Build_To_Any_Call ( + Make_Selected_Component (Loc, + Prefix => + New_Occurrence_Of (Expr_Parameter, Loc), + Selector_Name => + New_Occurrence_Of (Disc, Loc)), + Decls))); + Counter := Counter + 1; + Next_Discriminant (Disc); + end loop; + + else + -- Make elements an empty array + + declare + Dummy_Any : constant Entity_Id := + Make_Defining_Identifier (Loc, + Chars => New_Internal_Name ('A')); + + begin + Append_To (Decls, + Make_Object_Declaration (Loc, + Defining_Identifier => Dummy_Any, + Object_Definition => + New_Occurrence_Of (RTE (RE_Any), Loc))); + + Append_To (Elements, + Make_Component_Association (Loc, + Choices => New_List ( + Make_Range (Loc, + Low_Bound => + Make_Integer_Literal (Loc, 1), + High_Bound => + Make_Integer_Literal (Loc, 0))), + Expression => + New_Occurrence_Of (Dummy_Any, Loc))); + end; + end if; + + Set_Expression (Any_Decl, + Make_Function_Call (Loc, + Name => New_Occurrence_Of ( + RTE (RE_Any_Aggregate_Build), Loc), + Parameter_Associations => New_List ( + Result_TC, + Make_Aggregate (Loc, + Component_Associations => Elements)))); + Result_TC := Empty; + + -- ... then all components + + TA_Append_Record_Traversal (Stms, + Clist => Component_List (Rdef), + Container => Any, + Counter => Counter); + end; + end if; + + elsif Is_Array_Type (Typ) then + declare + Constrained : constant Boolean := Is_Constrained (Typ); + + procedure TA_Ary_Add_Process_Element + (Stmts : List_Id; + Any : Entity_Id; + Counter : Entity_Id; + Datum : Node_Id); + + -------------------------------- + -- TA_Ary_Add_Process_Element -- + -------------------------------- + + procedure TA_Ary_Add_Process_Element + (Stmts : List_Id; + Any : Entity_Id; + Counter : Entity_Id; + Datum : Node_Id) + is + pragma Warnings (Off); + pragma Unreferenced (Counter); + pragma Warnings (On); + + Element_Any : Node_Id; + + begin + if Etype (Datum) = RTE (RE_Any) then + Element_Any := Datum; + else + Element_Any := Build_To_Any_Call (Datum, Decls); + end if; + + Append_To (Stmts, + Make_Procedure_Call_Statement (Loc, + Name => New_Occurrence_Of ( + RTE (RE_Add_Aggregate_Element), Loc), + Parameter_Associations => New_List ( + New_Occurrence_Of (Any, Loc), + Element_Any))); + end TA_Ary_Add_Process_Element; + + procedure Append_To_Any_Array_Iterator is + new Append_Array_Traversal ( + Subprogram => Fnam, + Arry => Expr_Parameter, + Indices => New_List, + Add_Process_Element => TA_Ary_Add_Process_Element); + + Index : Node_Id; + + begin + Set_Expression (Any_Decl, + Make_Function_Call (Loc, + Name => + New_Occurrence_Of (RTE (RE_Create_Any), Loc), + Parameter_Associations => New_List (Result_TC))); + Result_TC := Empty; + + if not Constrained then + Index := First_Index (Typ); + for J in 1 .. Number_Dimensions (Typ) loop + Append_To (Stms, + Make_Procedure_Call_Statement (Loc, + Name => + New_Occurrence_Of ( + RTE (RE_Add_Aggregate_Element), Loc), + Parameter_Associations => New_List ( + New_Occurrence_Of (Any, Loc), + Build_To_Any_Call ( + OK_Convert_To (Etype (Index), + Make_Attribute_Reference (Loc, + Prefix => + New_Occurrence_Of (Expr_Parameter, Loc), + Attribute_Name => Name_First, + Expressions => New_List ( + Make_Integer_Literal (Loc, J)))), + Decls)))); + Next_Index (Index); + end loop; + end if; + + Append_To_Any_Array_Iterator (Stms, Any); + end; + + elsif Is_Integer_Type (Typ) or else Is_Unsigned_Type (Typ) then + Set_Expression (Any_Decl, + Build_To_Any_Call ( + OK_Convert_To ( + Find_Numeric_Representation (Typ), + New_Occurrence_Of (Expr_Parameter, Loc)), + Decls)); + + else + -- Default: type is represented as an opaque sequence of bytes + + declare + Strm : constant Entity_Id := Make_Defining_Identifier (Loc, + New_Internal_Name ('S')); + + begin + -- Strm : aliased Buffer_Stream_Type; + + Append_To (Decls, + Make_Object_Declaration (Loc, + Defining_Identifier => + Strm, + Aliased_Present => + True, + Object_Definition => + New_Occurrence_Of (RTE (RE_Buffer_Stream_Type), Loc))); + + -- Allocate_Buffer (Strm); + + Append_To (Stms, + Make_Procedure_Call_Statement (Loc, + Name => + New_Occurrence_Of (RTE (RE_Allocate_Buffer), Loc), + Parameter_Associations => New_List ( + New_Occurrence_Of (Strm, Loc)))); + + -- T'Output (Strm'Access, E); + + Append_To (Stms, + Make_Attribute_Reference (Loc, + Prefix => New_Occurrence_Of (Typ, Loc), + Attribute_Name => Name_Output, + Expressions => New_List ( + Make_Attribute_Reference (Loc, + Prefix => New_Occurrence_Of (Strm, Loc), + Attribute_Name => Name_Access), + New_Occurrence_Of (Expr_Parameter, Loc)))); + + -- BS_To_Any (Strm, A); + + Append_To (Stms, + Make_Procedure_Call_Statement (Loc, + Name => + New_Occurrence_Of (RTE (RE_BS_To_Any), Loc), + Parameter_Associations => New_List ( + New_Occurrence_Of (Strm, Loc), + New_Occurrence_Of (Any, Loc)))); + + -- Release_Buffer (Strm); + + Append_To (Stms, + Make_Procedure_Call_Statement (Loc, + Name => + New_Occurrence_Of (RTE (RE_Release_Buffer), Loc), + Parameter_Associations => New_List ( + New_Occurrence_Of (Strm, Loc)))); + end; + end if; + + Append_To (Decls, Any_Decl); + + if Present (Result_TC) then + Append_To (Stms, + Make_Procedure_Call_Statement (Loc, + Name => New_Occurrence_Of (RTE (RE_Set_TC), Loc), + Parameter_Associations => New_List ( + New_Occurrence_Of (Any, Loc), + Result_TC))); + end if; + + Append_To (Stms, + Make_Return_Statement (Loc, + Expression => New_Occurrence_Of (Any, Loc))); + + Decl := + Make_Subprogram_Body (Loc, + Specification => Spec, + Declarations => Decls, + Handled_Statement_Sequence => + Make_Handled_Sequence_Of_Statements (Loc, + Statements => Stms)); + end Build_To_Any_Function; + + ------------------------- + -- Build_TypeCode_Call -- + ------------------------- + + function Build_TypeCode_Call + (Loc : Source_Ptr; + Typ : Entity_Id; + Decls : List_Id) return Node_Id + is + U_Type : Entity_Id := Underlying_Type (Typ); + -- The full view, if Typ is private; the completion, + -- if Typ is incomplete. + + Fnam : Entity_Id := Empty; + Tnam : Entity_Id := Empty; + Pnam : Entity_Id := Empty; + Args : List_Id := Empty_List; + Lib_RE : RE_Id := RE_Null; + + Expr : Node_Id; + + begin + -- Special case System.PolyORB.Interface.Any: its primitives have + -- not been set yet, so can't call Find_Inherited_TSS. + + if Typ = RTE (RE_Any) then + Fnam := RTE (RE_TC_Any); + + else + -- First simple case where the TypeCode is present + -- in the type's TSS. + + Fnam := Find_Inherited_TSS (U_Type, Name_uTypeCode); + + if Present (Fnam) then + + -- When a TypeCode TSS exists, it has a single parameter + -- that is an anonymous access to the corresponding type. + -- This parameter is not used in any way; its purpose is + -- solely to provide overloading of the TSS. + + Tnam := + Make_Defining_Identifier (Loc, New_Internal_Name ('T')); + Pnam := + Make_Defining_Identifier (Loc, New_Internal_Name ('P')); + + Append_To (Decls, + Make_Full_Type_Declaration (Loc, + Defining_Identifier => Tnam, + Type_Definition => + Make_Access_To_Object_Definition (Loc, + Subtype_Indication => + New_Occurrence_Of (U_Type, Loc)))); + Append_To (Decls, + Make_Object_Declaration (Loc, + Defining_Identifier => Pnam, + Constant_Present => True, + Object_Definition => New_Occurrence_Of (Tnam, Loc), + + -- Use a variable here to force proper freezing of Tnam + + Expression => Make_Null (Loc))); + + -- Normally, calling _TypeCode with a null access parameter + -- should raise Constraint_Error, but this check is + -- suppressed for expanded code, and we do not care anyway + -- because we do not actually ever use this value. + + Args := New_List (New_Occurrence_Of (Pnam, Loc)); + end if; + end if; + + if No (Fnam) then + if Sloc (U_Type) <= Standard_Location then + + -- Do not try to build alias typecodes for subtypes from + -- Standard. + + U_Type := Base_Type (U_Type); + end if; + + if Is_Itype (U_Type) then + return Build_TypeCode_Call + (Loc, Associated_Node_For_Itype (U_Type), Decls); + end if; + + if U_Type = Standard_Boolean then + Lib_RE := RE_TC_B; + + elsif U_Type = Standard_Character then + Lib_RE := RE_TC_C; + + elsif U_Type = Standard_Wide_Character then + Lib_RE := RE_TC_WC; + + -- Floating point types + + elsif U_Type = Standard_Short_Float then + Lib_RE := RE_TC_SF; + + elsif U_Type = Standard_Float then + Lib_RE := RE_TC_F; + + elsif U_Type = Standard_Long_Float then + Lib_RE := RE_TC_LF; + + elsif U_Type = Standard_Long_Long_Float then + Lib_RE := RE_TC_LLF; + + -- Integer types (walk back to the base type) + + elsif U_Type = Etype (Standard_Short_Short_Integer) then + Lib_RE := RE_TC_SSI; + + elsif U_Type = Etype (Standard_Short_Integer) then + Lib_RE := RE_TC_SI; + + elsif U_Type = Etype (Standard_Integer) then + Lib_RE := RE_TC_I; + + elsif U_Type = Etype (Standard_Long_Integer) then + Lib_RE := RE_TC_LI; + + elsif U_Type = Etype (Standard_Long_Long_Integer) then + Lib_RE := RE_TC_LLI; + + -- Unsigned integer types + + elsif U_Type = RTE (RE_Short_Short_Unsigned) then + Lib_RE := RE_TC_SSU; + + elsif U_Type = RTE (RE_Short_Unsigned) then + Lib_RE := RE_TC_SU; + + elsif U_Type = RTE (RE_Unsigned) then + Lib_RE := RE_TC_U; + + elsif U_Type = RTE (RE_Long_Unsigned) then + Lib_RE := RE_TC_LU; + + elsif U_Type = RTE (RE_Long_Long_Unsigned) then + Lib_RE := RE_TC_LLU; + + elsif U_Type = Standard_String then + Lib_RE := RE_TC_String; + + -- Other (non-primitive) types + + else + declare + Decl : Entity_Id; + begin + Build_TypeCode_Function (Loc, U_Type, Decl, Fnam); + Append_To (Decls, Decl); + end; + end if; + + if Lib_RE /= RE_Null then + Fnam := RTE (Lib_RE); + end if; + end if; + + -- Call the function + + Expr := + Make_Function_Call (Loc, + Name => New_Occurrence_Of (Fnam, Loc), + Parameter_Associations => Args); + + -- Allow Expr to be used as arg to Build_To_Any_Call immediately + + Set_Etype (Expr, RTE (RE_TypeCode)); + + return Expr; + end Build_TypeCode_Call; + + ----------------------------- + -- Build_TypeCode_Function -- + ----------------------------- + + procedure Build_TypeCode_Function + (Loc : Source_Ptr; + Typ : Entity_Id; + Decl : out Node_Id; + Fnam : out Entity_Id) + is + Spec : Node_Id; + Decls : constant List_Id := New_List; + Stms : constant List_Id := New_List; + + TCNam : constant Entity_Id := + Make_Stream_Procedure_Function_Name (Loc, + Typ, Name_uTypeCode); + + Parameters : List_Id; + + procedure Add_String_Parameter + (S : String_Id; + Parameter_List : List_Id); + -- Add a literal for S to Parameters + + procedure Add_TypeCode_Parameter + (TC_Node : Node_Id; + Parameter_List : List_Id); + -- Add the typecode for Typ to Parameters + + procedure Add_Long_Parameter + (Expr_Node : Node_Id; + Parameter_List : List_Id); + -- Add a signed long integer expression to Parameters + + procedure Initialize_Parameter_List + (Name_String : String_Id; + Repo_Id_String : String_Id; + Parameter_List : out List_Id); + -- Return a list that contains the first two parameters + -- for a parameterized typecode: name and repository id. + + function Make_Constructed_TypeCode + (Kind : Entity_Id; + Parameters : List_Id) return Node_Id; + -- Call TC_Build with the given kind and parameters + + procedure Return_Constructed_TypeCode (Kind : Entity_Id); + -- Make a return statement that calls TC_Build with the given + -- typecode kind, and the constructed parameters list. + + procedure Return_Alias_TypeCode (Base_TypeCode : Node_Id); + -- Return a typecode that is a TC_Alias for the given typecode + + -------------------------- + -- Add_String_Parameter -- + -------------------------- + + procedure Add_String_Parameter + (S : String_Id; + Parameter_List : List_Id) + is + begin + Append_To (Parameter_List, + Make_Function_Call (Loc, + Name => + New_Occurrence_Of (RTE (RE_TA_String), Loc), + Parameter_Associations => New_List ( + Make_String_Literal (Loc, S)))); + end Add_String_Parameter; + + ---------------------------- + -- Add_TypeCode_Parameter -- + ---------------------------- + + procedure Add_TypeCode_Parameter + (TC_Node : Node_Id; + Parameter_List : List_Id) + is + begin + Append_To (Parameter_List, + Make_Function_Call (Loc, + Name => + New_Occurrence_Of (RTE (RE_TA_TC), Loc), + Parameter_Associations => New_List ( + TC_Node))); + end Add_TypeCode_Parameter; + + ------------------------ + -- Add_Long_Parameter -- + ------------------------ + + procedure Add_Long_Parameter + (Expr_Node : Node_Id; + Parameter_List : List_Id) + is + begin + Append_To (Parameter_List, + Make_Function_Call (Loc, + Name => + New_Occurrence_Of (RTE (RE_TA_LI), Loc), + Parameter_Associations => New_List (Expr_Node))); + end Add_Long_Parameter; + + ------------------------------- + -- Initialize_Parameter_List -- + ------------------------------- + + procedure Initialize_Parameter_List + (Name_String : String_Id; + Repo_Id_String : String_Id; + Parameter_List : out List_Id) + is + begin + Parameter_List := New_List; + Add_String_Parameter (Name_String, Parameter_List); + Add_String_Parameter (Repo_Id_String, Parameter_List); + end Initialize_Parameter_List; + + --------------------------- + -- Return_Alias_TypeCode -- + --------------------------- + + procedure Return_Alias_TypeCode + (Base_TypeCode : Node_Id) + is + begin + Add_TypeCode_Parameter (Base_TypeCode, Parameters); + Return_Constructed_TypeCode (RTE (RE_TC_Alias)); + end Return_Alias_TypeCode; + + ------------------------------- + -- Make_Constructed_TypeCode -- + ------------------------------- + + function Make_Constructed_TypeCode + (Kind : Entity_Id; + Parameters : List_Id) return Node_Id + is + Constructed_TC : constant Node_Id := + Make_Function_Call (Loc, + Name => + New_Occurrence_Of (RTE (RE_TC_Build), Loc), + Parameter_Associations => New_List ( + New_Occurrence_Of (Kind, Loc), + Make_Aggregate (Loc, + Expressions => Parameters))); + begin + Set_Etype (Constructed_TC, RTE (RE_TypeCode)); + return Constructed_TC; + end Make_Constructed_TypeCode; + + --------------------------------- + -- Return_Constructed_TypeCode -- + --------------------------------- + + procedure Return_Constructed_TypeCode (Kind : Entity_Id) is + begin + Append_To (Stms, + Make_Return_Statement (Loc, + Expression => + Make_Constructed_TypeCode (Kind, Parameters))); + end Return_Constructed_TypeCode; + + ------------------ + -- Record types -- + ------------------ + + procedure TC_Rec_Add_Process_Element + (Params : List_Id; + Any : Entity_Id; + Counter : in out Int; + Rec : Entity_Id; + Field : Node_Id); + + procedure TC_Append_Record_Traversal is + new Append_Record_Traversal ( + Rec => Empty, + Add_Process_Element => TC_Rec_Add_Process_Element); + + -------------------------------- + -- TC_Rec_Add_Process_Element -- + -------------------------------- + + procedure TC_Rec_Add_Process_Element + (Params : List_Id; + Any : Entity_Id; + Counter : in out Int; + Rec : Entity_Id; + Field : Node_Id) + is + pragma Warnings (Off); + pragma Unreferenced (Any, Counter, Rec); + pragma Warnings (On); + + begin + if Nkind (Field) = N_Defining_Identifier then + + -- A regular component + + Add_TypeCode_Parameter ( + Build_TypeCode_Call (Loc, Etype (Field), Decls), Params); + Get_Name_String (Chars (Field)); + Add_String_Parameter (String_From_Name_Buffer, Params); + + else + + -- A variant part + + declare + Discriminant_Type : constant Entity_Id := + Etype (Name (Field)); + + Is_Enum : constant Boolean := + Is_Enumeration_Type (Discriminant_Type); + + Union_TC_Params : List_Id; + + U_Name : constant Name_Id := + New_External_Name (Chars (Typ), 'U', -1); + + Name_Str : String_Id; + Struct_TC_Params : List_Id; + + Variant : Node_Id; + Choice : Node_Id; + Default : constant Node_Id := + Make_Integer_Literal (Loc, -1); + + Dummy_Counter : Int := 0; + + procedure Add_Params_For_Variant_Components; + -- Add a struct TypeCode and a corresponding member name + -- to the union parameter list. + + -- Ordering of declarations is a complete mess in this + -- area, it is supposed to be types/varibles, then + -- subprogram specs, then subprogram bodies ??? + + --------------------------------------- + -- Add_Params_For_Variant_Components -- + --------------------------------------- + + procedure Add_Params_For_Variant_Components + is + S_Name : constant Name_Id := + New_External_Name (U_Name, 'S', -1); + + begin + Get_Name_String (S_Name); + Name_Str := String_From_Name_Buffer; + Initialize_Parameter_List + (Name_Str, Name_Str, Struct_TC_Params); + + -- Build struct parameters + + TC_Append_Record_Traversal (Struct_TC_Params, + Component_List (Variant), + Empty, + Dummy_Counter); + + Add_TypeCode_Parameter + (Make_Constructed_TypeCode + (RTE (RE_TC_Struct), Struct_TC_Params), + Union_TC_Params); + + Add_String_Parameter (Name_Str, Union_TC_Params); + end Add_Params_For_Variant_Components; + + begin + Get_Name_String (U_Name); + Name_Str := String_From_Name_Buffer; + + Initialize_Parameter_List + (Name_Str, Name_Str, Union_TC_Params); + + Add_String_Parameter (Name_Str, Params); + + -- Add union in enclosing parameter list + + Add_TypeCode_Parameter + (Make_Constructed_TypeCode + (RTE (RE_TC_Union), Union_TC_Params), + Parameters); + + -- Build union parameters + + Add_TypeCode_Parameter + (Discriminant_Type, Union_TC_Params); + Add_Long_Parameter (Default, Union_TC_Params); + + Variant := First_Non_Pragma (Variants (Field)); + while Present (Variant) loop + Choice := First (Discrete_Choices (Variant)); + while Present (Choice) loop + case Nkind (Choice) is + when N_Range => + declare + L : constant Uint := + Expr_Value (Low_Bound (Choice)); + H : constant Uint := + Expr_Value (High_Bound (Choice)); + J : Uint := L; + -- 3.8.1(8) guarantees that the bounds of + -- this range are static. + + Expr : Node_Id; + + begin + while J <= H loop + if Is_Enum then + Expr := New_Occurrence_Of ( + Get_Enum_Lit_From_Pos ( + Discriminant_Type, J, Loc), Loc); + else + Expr := + Make_Integer_Literal (Loc, J); + end if; + Append_To (Union_TC_Params, + Build_To_Any_Call (Expr, Decls)); + Add_Params_For_Variant_Components; + J := J + Uint_1; + end loop; + end; + + when N_Others_Choice => + Add_Long_Parameter ( + Make_Integer_Literal (Loc, 0), + Union_TC_Params); + Add_Params_For_Variant_Components; + + when others => + Append_To (Union_TC_Params, + Build_To_Any_Call (Choice, Decls)); + Add_Params_For_Variant_Components; + + end case; + + end loop; + + Next_Non_Pragma (Variant); + end loop; + + end; + end if; + end TC_Rec_Add_Process_Element; + + Type_Name_Str : String_Id; + Type_Repo_Id_Str : String_Id; + + begin + pragma Assert (not Is_Itype (Typ)); + Fnam := TCNam; + + Spec := + Make_Function_Specification (Loc, + Defining_Unit_Name => Fnam, + Parameter_Specifications => Empty_List, + Subtype_Mark => New_Occurrence_Of (RTE (RE_TypeCode), Loc)); + + Build_Name_And_Repository_Id (Typ, + Name_Str => Type_Name_Str, Repo_Id_Str => Type_Repo_Id_Str); + Initialize_Parameter_List + (Type_Name_Str, Type_Repo_Id_Str, Parameters); + + if Is_Derived_Type (Typ) + and then not Is_Tagged_Type (Typ) + then + declare + D_Node : constant Node_Id := Declaration_Node (Typ); + Parent_Type : Entity_Id := Etype (Typ); + begin + + if Is_Enumeration_Type (Typ) + and then Nkind (D_Node) = N_Subtype_Declaration + and then Nkind (Original_Node (D_Node)) + /= N_Subtype_Declaration + then + + -- Parent_Type is the implicit intermediate base type + -- created by Build_Derived_Enumeration_Type. + + Parent_Type := Etype (Parent_Type); + end if; + + Return_Alias_TypeCode ( + Build_TypeCode_Call (Loc, Parent_Type, Decls)); + end; + + elsif Is_Integer_Type (Typ) + or else Is_Unsigned_Type (Typ) + then + Return_Alias_TypeCode ( + Build_TypeCode_Call (Loc, + Find_Numeric_Representation (Typ), Decls)); + + elsif Is_Record_Type (Typ) + and then not Is_Tagged_Type (Typ) + then + if Nkind (Declaration_Node (Typ)) = N_Subtype_Declaration then + Return_Alias_TypeCode ( + Build_TypeCode_Call (Loc, Etype (Typ), Decls)); + else + declare + Disc : Entity_Id := Empty; + Rdef : constant Node_Id := + Type_Definition (Declaration_Node (Typ)); + Dummy_Counter : Int := 0; + begin + -- First all discriminants + + if Has_Discriminants (Typ) then + Disc := First_Discriminant (Typ); + end if; + while Present (Disc) loop + Add_TypeCode_Parameter ( + Build_TypeCode_Call (Loc, Etype (Disc), Decls), + Parameters); + Get_Name_String (Chars (Disc)); + Add_String_Parameter ( + String_From_Name_Buffer, + Parameters); + Next_Discriminant (Disc); + end loop; + + -- ... then all components + + TC_Append_Record_Traversal + (Parameters, Component_List (Rdef), + Empty, Dummy_Counter); + Return_Constructed_TypeCode (RTE (RE_TC_Struct)); + end; + end if; + + elsif Is_Array_Type (Typ) then + declare + Ndim : constant Pos := Number_Dimensions (Typ); + Inner_TypeCode : Node_Id; + Constrained : constant Boolean := Is_Constrained (Typ); + Indx : Node_Id := First_Index (Typ); + + begin + Inner_TypeCode := Build_TypeCode_Call (Loc, + Component_Type (Typ), + Decls); + + for J in 1 .. Ndim loop + if Constrained then + Inner_TypeCode := Make_Constructed_TypeCode + (RTE (RE_TC_Array), New_List ( + Build_To_Any_Call ( + OK_Convert_To (RTE (RE_Long_Unsigned), + Make_Attribute_Reference (Loc, + Prefix => + New_Occurrence_Of (Typ, Loc), + Attribute_Name => + Name_Length, + Expressions => New_List ( + Make_Integer_Literal (Loc, + Ndim - J + 1)))), + Decls), + Build_To_Any_Call (Inner_TypeCode, Decls))); + + else + -- Unconstrained case: add low bound for each + -- dimension. + + Add_TypeCode_Parameter + (Build_TypeCode_Call (Loc, Etype (Indx), Decls), + Parameters); + Get_Name_String (New_External_Name ('L', J)); + Add_String_Parameter ( + String_From_Name_Buffer, + Parameters); + Next_Index (Indx); + + Inner_TypeCode := Make_Constructed_TypeCode + (RTE (RE_TC_Sequence), New_List ( + Build_To_Any_Call ( + OK_Convert_To (RTE (RE_Long_Unsigned), + Make_Integer_Literal (Loc, 0)), + Decls), + Build_To_Any_Call (Inner_TypeCode, Decls))); + end if; + end loop; + + if Constrained then + Return_Alias_TypeCode (Inner_TypeCode); + else + Add_TypeCode_Parameter (Inner_TypeCode, Parameters); + Start_String; + Store_String_Char ('V'); + Add_String_Parameter (End_String, Parameters); + Return_Constructed_TypeCode (RTE (RE_TC_Struct)); + end if; + end; + + else + -- Default: type is represented as an opaque sequence of bytes + + Return_Alias_TypeCode + (New_Occurrence_Of (RTE (RE_TC_Opaque), Loc)); + end if; + + Decl := + Make_Subprogram_Body (Loc, + Specification => Spec, + Declarations => Decls, + Handled_Statement_Sequence => + Make_Handled_Sequence_Of_Statements (Loc, + Statements => Stms)); + end Build_TypeCode_Function; + + ------------------------ + -- Find_Inherited_TSS -- + ------------------------ + + function Find_Inherited_TSS + (Typ : Entity_Id; + Nam : Name_Id) return Entity_Id + is + P_Type : Entity_Id := Typ; + Proc : Entity_Id; + + begin + Proc := TSS (Base_Type (Typ), Nam); + + -- Check first if there is a TSS given for the type itself + + if Present (Proc) then + return Proc; + end if; + + -- If Typ is a derived type, it may inherit attributes from some + -- ancestor which is not the ultimate underlying one. If Typ is a + -- derived tagged type, The corresponding primitive operation has + -- been created explicitly. + + if Is_Derived_Type (P_Type) then + if Is_Tagged_Type (P_Type) then + return Find_Prim_Op (P_Type, Nam); + else + while Is_Derived_Type (P_Type) loop + Proc := TSS (Base_Type (Etype (Typ)), Nam); + + if Present (Proc) then + return Proc; + else + P_Type := Base_Type (Etype (P_Type)); + end if; + end loop; + end if; + end if; + + -- If nothing else, use the TSS of the root type + + return TSS (Base_Type (Underlying_Type (Typ)), Nam); + end Find_Inherited_TSS; + + --------------------------------- + -- Find_Numeric_Representation -- + --------------------------------- + + function Find_Numeric_Representation (Typ : Entity_Id) + return Entity_Id + is + FST : constant Entity_Id := First_Subtype (Typ); + P_Size : constant Uint := Esize (FST); + + begin + if Is_Unsigned_Type (Typ) then + if P_Size <= Standard_Short_Short_Integer_Size then + return RTE (RE_Short_Short_Unsigned); + + elsif P_Size <= Standard_Short_Integer_Size then + return RTE (RE_Short_Unsigned); + + elsif P_Size <= Standard_Integer_Size then + return RTE (RE_Unsigned); + + elsif P_Size <= Standard_Long_Integer_Size then + return RTE (RE_Long_Unsigned); + + else + return RTE (RE_Long_Long_Unsigned); + end if; + + elsif Is_Integer_Type (Typ) then + if P_Size <= Standard_Short_Short_Integer_Size then + return Standard_Short_Short_Integer; + + elsif P_Size <= Standard_Short_Integer_Size then + return Standard_Short_Integer; + + elsif P_Size <= Standard_Integer_Size then + return Standard_Integer; + + elsif P_Size <= Standard_Long_Integer_Size then + return Standard_Long_Integer; + + else + return Standard_Long_Long_Integer; + end if; + + elsif Is_Floating_Point_Type (Typ) then + if P_Size <= Standard_Short_Float_Size then + return Standard_Short_Float; + + elsif P_Size <= Standard_Float_Size then + return Standard_Float; + + elsif P_Size <= Standard_Long_Float_Size then + return Standard_Long_Float; + + else + return Standard_Long_Long_Float; + end if; + + else + raise Program_Error; + end if; + + -- TBD: fixed point types??? + -- TBverified numeric types with a biased representation??? + + end Find_Numeric_Representation; + + --------------------------- + -- Append_Array_Traversal -- + --------------------------- + + procedure Append_Array_Traversal + (Stmts : List_Id; + Any : Entity_Id; + Counter : Entity_Id := Empty; + Depth : Pos := 1) + is + Loc : constant Source_Ptr := Sloc (Subprogram); + Typ : constant Entity_Id := Etype (Arry); + Constrained : constant Boolean := Is_Constrained (Typ); + Ndim : constant Pos := Number_Dimensions (Typ); + + Inner_Any, Inner_Counter : Entity_Id; + + Loop_Stm : Node_Id; + Inner_Stmts : constant List_Id := New_List; + + begin + if Depth > Ndim then + + -- Processing for one element of an array + + declare + Element_Expr : constant Node_Id := + Make_Indexed_Component (Loc, + New_Occurrence_Of (Arry, Loc), + Indices); + + begin + Set_Etype (Element_Expr, Component_Type (Typ)); + Add_Process_Element (Stmts, + Any => Any, + Counter => Counter, + Datum => Element_Expr); + end; + + return; + end if; + + Append_To (Indices, + Make_Identifier (Loc, New_External_Name ('L', Depth))); + + if Constrained then + Inner_Any := Any; + Inner_Counter := Counter; + else + Inner_Any := Make_Defining_Identifier (Loc, + New_External_Name ('A', Depth)); + Set_Etype (Inner_Any, RTE (RE_Any)); + + if Present (Counter) then + Inner_Counter := Make_Defining_Identifier (Loc, + New_External_Name ('J', Depth)); + else + Inner_Counter := Empty; + end if; + end if; + + Append_Array_Traversal (Inner_Stmts, + Any => Inner_Any, + Counter => Inner_Counter, + Depth => Depth + 1); + + Loop_Stm := + Make_Implicit_Loop_Statement (Subprogram, + Iteration_Scheme => + Make_Iteration_Scheme (Loc, + Loop_Parameter_Specification => + Make_Loop_Parameter_Specification (Loc, + Defining_Identifier => + Make_Defining_Identifier (Loc, + Chars => New_External_Name ('L', Depth)), + + Discrete_Subtype_Definition => + Make_Attribute_Reference (Loc, + Prefix => New_Occurrence_Of (Arry, Loc), + Attribute_Name => Name_Range, + + Expressions => New_List ( + Make_Integer_Literal (Loc, Depth))))), + Statements => Inner_Stmts); + + if Constrained then + Append_To (Stmts, Loop_Stm); + return; + end if; + + declare + Decls : constant List_Id := New_List; + Dimen_Stmts : constant List_Id := New_List; + Length_Node : Node_Id; + + Inner_Any_TypeCode : constant Entity_Id := + Make_Defining_Identifier (Loc, + New_External_Name ('T', Depth)); + + Inner_Any_TypeCode_Expr : Node_Id; + + begin + if Depth = 1 then + Inner_Any_TypeCode_Expr := + Make_Function_Call (Loc, + Name => + New_Occurrence_Of (RTE (RE_Any_Member_Type), Loc), + Parameter_Associations => New_List ( + New_Occurrence_Of (Any, Loc), + Make_Integer_Literal (Loc, Ndim))); + else + Inner_Any_TypeCode_Expr := + Make_Function_Call (Loc, + Name => + New_Occurrence_Of (RTE (RE_Content_Type), Loc), + Parameter_Associations => New_List ( + Make_Identifier (Loc, + New_External_Name ('T', Depth - 1)))); + end if; + + Append_To (Decls, + Make_Object_Declaration (Loc, + Defining_Identifier => Inner_Any_TypeCode, + Constant_Present => True, + Object_Definition => New_Occurrence_Of ( + RTE (RE_TypeCode), Loc), + Expression => Inner_Any_TypeCode_Expr)); + Append_To (Decls, + Make_Object_Declaration (Loc, + Defining_Identifier => Inner_Any, + Object_Definition => + New_Occurrence_Of (RTE (RE_Any), Loc), + Expression => + Make_Function_Call (Loc, + Name => + New_Occurrence_Of ( + RTE (RE_Create_Any), Loc), + Parameter_Associations => New_List ( + New_Occurrence_Of (Inner_Any_TypeCode, Loc))))); + + if Present (Inner_Counter) then + Append_To (Decls, + Make_Object_Declaration (Loc, + Defining_Identifier => Inner_Counter, + Object_Definition => + New_Occurrence_Of (RTE (RE_Long_Unsigned), Loc), + Expression => + Make_Integer_Literal (Loc, 0))); + end if; + + Length_Node := Make_Attribute_Reference (Loc, + Prefix => New_Occurrence_Of (Arry, Loc), + Attribute_Name => Name_Length, + Expressions => + New_List (Make_Integer_Literal (Loc, Depth))); + Set_Etype (Length_Node, RTE (RE_Long_Unsigned)); + + Add_Process_Element (Dimen_Stmts, + Datum => Length_Node, + Any => Inner_Any, + Counter => Inner_Counter); + + -- Loop_Stm does approrpriate processing for each element + -- of Inner_Any. + + Append_To (Dimen_Stmts, Loop_Stm); + + -- Link outer and inner any + + Add_Process_Element (Dimen_Stmts, + Any => Any, + Counter => Counter, + Datum => New_Occurrence_Of (Inner_Any, Loc)); + + + Append_To (Stmts, + Make_Block_Statement (Loc, + Declarations => + Decls, + Handled_Statement_Sequence => + Make_Handled_Sequence_Of_Statements (Loc, + Statements => Dimen_Stmts))); + end; + end Append_Array_Traversal; + + ----------------------------------------- + -- Make_Stream_Procedure_Function_Name -- + ----------------------------------------- + + function Make_Stream_Procedure_Function_Name + (Loc : Source_Ptr; + Typ : Entity_Id; + Nam : Name_Id) return Entity_Id + is + begin + -- For tagged types, we use a canonical name so that it matches + -- the primitive spec. For all other cases, we use a serialized + -- name so that multiple generations of the same procedure do not + -- clash. + + if Is_Tagged_Type (Typ) then + return Make_Defining_Identifier (Loc, Nam); + else + return Make_Defining_Identifier (Loc, + Chars => + New_External_Name (Nam, ' ', Increment_Serial_Number)); + end if; + end Make_Stream_Procedure_Function_Name; + end Helpers; end PolyORB_Support; ------------------------------- @@ -4791,6 +9662,7 @@ package body Exp_Dist is Set_Ekind (Snam, E_Procedure); Set_Etype (Snam, Standard_Void_Type); end if; + Set_TSS (Typ, Snam); end Set_Renaming_TSS; @@ -4847,6 +9719,101 @@ package body Exp_Dist is end case; end Specific_Add_RAST_Features; + ------------------------------------------ + -- Specific_Build_General_Calling_Stubs -- + ------------------------------------------ + + procedure Specific_Build_General_Calling_Stubs + (Decls : List_Id; + Statements : List_Id; + Target : RPC_Target; + Subprogram_Id : Node_Id; + Asynchronous : Node_Id := Empty; + Is_Known_Asynchronous : Boolean := False; + Is_Known_Non_Asynchronous : Boolean := False; + Is_Function : Boolean; + Spec : Node_Id; + Stub_Type : Entity_Id := Empty; + RACW_Type : Entity_Id := Empty; + Nod : Node_Id) + is + begin + case Get_PCS_Name is + when Name_PolyORB_DSA => + PolyORB_Support.Build_General_Calling_Stubs ( + Decls, + Statements, + Target.Object, + Subprogram_Id, + Asynchronous, + Is_Known_Asynchronous, + Is_Known_Non_Asynchronous, + Is_Function, + Spec, + Stub_Type, + RACW_Type, + Nod); + when others => + GARLIC_Support.Build_General_Calling_Stubs ( + Decls, + Statements, + Target.Partition, + Target.RPC_Receiver, + Subprogram_Id, + Asynchronous, + Is_Known_Asynchronous, + Is_Known_Non_Asynchronous, + Is_Function, + Spec, + Stub_Type, + RACW_Type, + Nod); + end case; + end Specific_Build_General_Calling_Stubs; + + -------------------------------- + -- Specific_Build_Stub_Target -- + -------------------------------- + + function Specific_Build_Stub_Target + (Loc : Source_Ptr; + Decls : List_Id; + RCI_Locator : Entity_Id; + Controlling_Parameter : Entity_Id) return RPC_Target is + begin + case Get_PCS_Name is + when Name_PolyORB_DSA => + return PolyORB_Support.Build_Stub_Target (Loc, + Decls, RCI_Locator, Controlling_Parameter); + when others => + return GARLIC_Support.Build_Stub_Target (Loc, + Decls, RCI_Locator, Controlling_Parameter); + end case; + end Specific_Build_Stub_Target; + + ------------------------------ + -- Specific_Build_Stub_Type -- + ------------------------------ + + procedure Specific_Build_Stub_Type + (RACW_Type : Entity_Id; + Stub_Type : Entity_Id; + Stub_Type_Decl : out Node_Id; + RPC_Receiver_Decl : out Node_Id) + is + begin + case Get_PCS_Name is + when Name_PolyORB_DSA => + PolyORB_Support.Build_Stub_Type ( + RACW_Type, Stub_Type, + Stub_Type_Decl, RPC_Receiver_Decl); + when others => + GARLIC_Support.Build_Stub_Type ( + RACW_Type, Stub_Type, + Stub_Type_Decl, RPC_Receiver_Decl); + end case; + end Specific_Build_Stub_Type; + -------------------------- -- Underlying_RACW_Type -- -------------------------- |