1------------------------------------------------------------------------------ 2-- -- 3-- GNAT COMPILER COMPONENTS -- 4-- -- 5-- S E M _ D I S T -- 6-- -- 7-- S p e c -- 8-- -- 9-- Copyright (C) 1992-2012, Free Software Foundation, Inc. -- 10-- -- 11-- GNAT is free software; you can redistribute it and/or modify it under -- 12-- terms of the GNU General Public License as published by the Free Soft- -- 13-- ware Foundation; either version 3, or (at your option) any later ver- -- 14-- sion. GNAT is distributed in the hope that it will be useful, but WITH- -- 15-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY -- 16-- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License -- 17-- for more details. You should have received a copy of the GNU General -- 18-- Public License distributed with GNAT; see file COPYING3. If not, go to -- 19-- http://www.gnu.org/licenses for a complete copy of the license. -- 20-- -- 21-- GNAT was originally developed by the GNAT team at New York University. -- 22-- Extensive contributions were provided by Ada Core Technologies Inc. -- 23-- -- 24------------------------------------------------------------------------------ 25 26-- Semantic processing for distribution annex facilities 27 28with Snames; use Snames; 29with Types; use Types; 30 31package Sem_Dist is 32 33 function Get_PCS_Name return PCS_Names; 34 -- Return the name of a literal of type DSA_Implementation_Name in package 35 -- System.Partition_Interface indicating what PCS is currently in use. 36 37 function Get_PCS_Version return Int; 38 -- Return the version number of the PCS API implemented by the PCS. 39 -- The consistency of this version with the one expected by Exp_Dist 40 -- (Exp_Dist.PCS_Version_Number) in Rtsfind.RTE.Check_RPC. 41 -- If no PCS version information is available, 0 is returned. 42 43 function Is_Valid_Remote_Object_Type (E : Entity_Id) return Boolean; 44 -- True if tagged type E is a valid candidate as the root type of the 45 -- designated type for a RACW, i.e. a tagged limited private type, or a 46 -- limited interface type, or a private extension of such a type. 47 48 procedure Add_Stub_Constructs (N : Node_Id); 49 -- Create the stubs constructs for a remote call interface package 50 -- specification or body or for a shared passive specification. For caller 51 -- stubs, expansion takes place directly in the specification and no 52 -- additional compilation unit is created. 53 54 function Build_RAS_Primitive_Specification 55 (Subp_Spec : Node_Id; 56 Remote_Object_Type : Node_Id) return Node_Id; 57 -- Build a subprogram specification for the primitive operation of the 58 -- Remote_Object_Type used to implement a remote access-to-subprogram 59 -- type whose parameter profile is given by specification Subp_Spec. 60 61 function Is_All_Remote_Call (N : Node_Id) return Boolean; 62 -- Check whether a function or procedure call should be expanded into 63 -- a remote call, because the entity is declared in a package decl that 64 -- is not currently in scope, and the proper pragmas apply. 65 66 procedure Process_Partition_Id (N : Node_Id); 67 -- Replace attribute reference with call to runtime function. The result 68 -- is converted to the context type, because the attribute yields a 69 -- universal integer value. 70 71 procedure Process_Remote_AST_Attribute (N : Node_Id; New_Type : Entity_Id); 72 -- Given N, an access attribute reference node whose prefix is a 73 -- remote subprogram, rewrite N with a call to a conversion function 74 -- whose return type is New_Type. 75 76 procedure Process_Remote_AST_Declaration (N : Node_Id); 77 -- Given N, an access to subprogram type declaration node in RCI or remote 78 -- types unit, build a new record (fat pointer) type declaration using the 79 -- old Defining_Identifier of N and a link to the old declaration node N 80 -- whose Defining_Identifier is changed. We also construct declarations of 81 -- two subprograms in the unit specification which handle remote access to 82 -- subprogram type (fat pointer) dereference and the unit receiver that 83 -- handles remote calls (from remote access to subprogram type values.) 84 85 function Remote_AST_E_Dereference (P : Node_Id) return Boolean; 86 -- If the prefix of an explicit dereference is a record type that 87 -- represent the fat pointer for an Remote access to subprogram, in the 88 -- context of a call, rewrite the enclosing call node into remote call, 89 -- the first actual of which is the fat pointer. Return true if the 90 -- context is correct and the transformation took place. 91 92 function Remote_AST_I_Dereference (P : Node_Id) return Boolean; 93 -- If P is a record type that represents the fat pointer for a remote 94 -- access to subprogram, and P is the prefix of a call, insert an explicit 95 -- dereference and perform the transformation described for the previous 96 -- function. 97 98 function Remote_AST_Null_Value 99 (N : Node_Id; 100 Typ : Entity_Id) return Boolean; 101 -- If N is a null value and Typ a remote access to subprogram type, this 102 -- function will check if null needs to be replaced with an aggregate and 103 -- will return True in this case. Otherwise, it will return False. 104 105 function Package_Specification_Of_Scope (E : Entity_Id) return Node_Id; 106 -- Return the N_Package_Specification corresponding to a scope E 107 108 function Is_RACW_Stub_Type_Operation (Op : Entity_Id) return Boolean; 109 -- True when Op is a primitive operation of an RACW stub type 110 111end Sem_Dist; 112