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1 ------------------------------------------------------------------------------
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2 -- --
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3 -- GNAT COMPILER COMPONENTS --
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4 -- --
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5 -- S E M _ D I S T --
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6 -- --
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7 -- S p e c --
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8 -- --
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145
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9 -- Copyright (C) 1992-2019, Free Software Foundation, Inc. --
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111
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10 -- --
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11 -- GNAT is free software; you can redistribute it and/or modify it under --
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12 -- terms of the GNU General Public License as published by the Free Soft- --
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13 -- ware Foundation; either version 3, or (at your option) any later ver- --
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14 -- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
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15 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
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16 -- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
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17 -- for more details. You should have received a copy of the GNU General --
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18 -- Public License distributed with GNAT; see file COPYING3. If not, go to --
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19 -- http://www.gnu.org/licenses for a complete copy of the license. --
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20 -- --
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21 -- GNAT was originally developed by the GNAT team at New York University. --
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22 -- Extensive contributions were provided by Ada Core Technologies Inc. --
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23 -- --
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24 ------------------------------------------------------------------------------
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25
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26 -- Semantic processing for distribution annex facilities
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27
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28 with Snames; use Snames;
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29 with Types; use Types;
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30
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31 package Sem_Dist is
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32
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33 function Get_PCS_Name return PCS_Names;
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34 -- Return the name of a literal of type DSA_Implementation_Name in package
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35 -- System.Partition_Interface indicating what PCS is currently in use.
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36
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37 function Get_PCS_Version return Int;
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38 -- Return the version number of the PCS API implemented by the PCS.
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39 -- The consistency of this version with the one expected by Exp_Dist
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40 -- (Exp_Dist.PCS_Version_Number) in Rtsfind.RTE.Check_RPC.
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41 -- If no PCS version information is available, 0 is returned.
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42
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43 function Is_Valid_Remote_Object_Type (E : Entity_Id) return Boolean;
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44 -- True if tagged type E is a valid candidate as the root type of the
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45 -- designated type for a RACW, i.e. a tagged limited private type, or a
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46 -- limited interface type, or a private extension of such a type.
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47
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48 procedure Add_Stub_Constructs (N : Node_Id);
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49 -- Create the stubs constructs for a remote call interface package
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50 -- specification or body or for a shared passive specification. For caller
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51 -- stubs, expansion takes place directly in the specification and no
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52 -- additional compilation unit is created.
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53
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54 function Build_RAS_Primitive_Specification
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55 (Subp_Spec : Node_Id;
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56 Remote_Object_Type : Node_Id) return Node_Id;
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57 -- Build a subprogram specification for the primitive operation of the
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58 -- Remote_Object_Type used to implement a remote access-to-subprogram
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59 -- type whose parameter profile is given by specification Subp_Spec.
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60
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61 function Is_All_Remote_Call (N : Node_Id) return Boolean;
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62 -- Check whether a function or procedure call should be expanded into
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63 -- a remote call, because the entity is declared in a package decl that
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64 -- is not currently in scope, and the proper pragmas apply.
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65
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66 procedure Process_Partition_Id (N : Node_Id);
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67 -- Replace attribute reference with call to runtime function. The result
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68 -- is converted to the context type, because the attribute yields a
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69 -- universal integer value.
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70
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71 procedure Process_Remote_AST_Attribute (N : Node_Id; New_Type : Entity_Id);
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72 -- Given N, an access attribute reference node whose prefix is a
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73 -- remote subprogram, rewrite N with a call to a conversion function
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74 -- whose return type is New_Type.
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75
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76 procedure Process_Remote_AST_Declaration (N : Node_Id);
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77 -- Given N, an access to subprogram type declaration node in RCI or remote
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78 -- types unit, build a new record (fat pointer) type declaration using the
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79 -- old Defining_Identifier of N and a link to the old declaration node N
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80 -- whose Defining_Identifier is changed. We also construct declarations of
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81 -- two subprograms in the unit specification which handle remote access to
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82 -- subprogram type (fat pointer) dereference and the unit receiver that
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83 -- handles remote calls (from remote access to subprogram type values.)
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84
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85 function Remote_AST_E_Dereference (P : Node_Id) return Boolean;
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86 -- If the prefix of an explicit dereference is a record type that
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87 -- represent the fat pointer for an Remote access to subprogram, in the
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88 -- context of a call, rewrite the enclosing call node into remote call,
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89 -- the first actual of which is the fat pointer. Return true if the
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90 -- context is correct and the transformation took place.
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91
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92 function Remote_AST_I_Dereference (P : Node_Id) return Boolean;
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93 -- If P is a record type that represents the fat pointer for a remote
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94 -- access to subprogram, and P is the prefix of a call, insert an explicit
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95 -- dereference and perform the transformation described for the previous
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96 -- function.
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97
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98 function Remote_AST_Null_Value
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99 (N : Node_Id;
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100 Typ : Entity_Id) return Boolean;
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101 -- If N is a null value and Typ a remote access to subprogram type, this
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102 -- function will check if null needs to be replaced with an aggregate and
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103 -- will return True in this case. Otherwise, it will return False.
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104
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105 function Package_Specification_Of_Scope (E : Entity_Id) return Node_Id;
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106 -- Return the N_Package_Specification corresponding to a scope E
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107
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108 function Is_RACW_Stub_Type_Operation (Op : Entity_Id) return Boolean;
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109 -- True when Op is a primitive operation of an RACW stub type
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110
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111 end Sem_Dist;
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