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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 _ C H 7 --
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6 -- --
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7 -- S p e c --
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8 -- --
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131
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9 -- Copyright (C) 1992-2018, 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 with Types; use Types;
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27
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28 package Sem_Ch7 is
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29
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30 procedure Analyze_Package_Body (N : Node_Id);
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31 procedure Analyze_Package_Declaration (N : Node_Id);
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32 procedure Analyze_Package_Specification (N : Node_Id);
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33 procedure Analyze_Private_Type_Declaration (N : Node_Id);
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34
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35 procedure End_Package_Scope (P : Entity_Id);
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36 -- Calls Uninstall_Declarations, and then pops the scope stack
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37
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38 procedure Exchange_Declarations (Id : Entity_Id);
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39 -- Exchange private and full declaration on entry/exit from a package
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40 -- declaration or body. The semantic links of the respective nodes
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41 -- are preserved in the exchange.
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42
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43 procedure Install_Visible_Declarations (P : Entity_Id);
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44 procedure Install_Private_Declarations (P : Entity_Id);
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45
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46 -- On entrance to a package body, make declarations in package spec
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47 -- immediately visible.
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48 --
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49 -- When compiling the body of a package, both routines are called in
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50 -- succession. When compiling the body of a child package, the call
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51 -- to Install_Private_Declaration is immediate for private children,
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52 -- but is deferred until the compilation of the private part of the
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53 -- child for public child packages.
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54
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55 function Unit_Requires_Body
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56 (Pack_Id : Entity_Id;
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57 Do_Abstract_States : Boolean := False) return Boolean;
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58 -- Determine whether package Pack_Id requires a body. A specification needs
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59 -- a body if it contains declarations that require completion in the body.
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60 -- A non-Ghost [generic] package does not require a body when it declares
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61 -- Ghost entities exclusively. When flag Do_Abstract_States is set to True,
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62 -- non-null abstract states are considered in determining the need for a
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63 -- body.
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64
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65 procedure May_Need_Implicit_Body (E : Entity_Id);
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66 -- If a package declaration contains tasks or RACWs and does not require
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67 -- a body, create an implicit body at the end of the current declarative
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68 -- part to activate those tasks or contain the bodies for the RACW
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69 -- calling stubs.
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70
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71 procedure New_Private_Type (N : Node_Id; Id : Entity_Id; Def : Node_Id);
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72 -- Common processing for private type declarations and for formal private
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73 -- type declarations. For private types, N and Def are the type declaration
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74 -- node; for formal private types, Def is the formal type definition.
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75
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76 procedure Uninstall_Declarations (P : Entity_Id);
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77 -- At the end of a package declaration or body, declarations in the visible
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78 -- part are no longer immediately visible, and declarations in the private
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79 -- part are not visible at all. For inner packages, place visible entities
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80 -- at the end of their homonym chains. For compilation units, make
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81 -- all entities invisible. In both cases, exchange private and visible
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82 -- declarations to restore order of elaboration.
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83
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84 end Sem_Ch7;
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