1------------------------------------------------------------------------------ 2-- -- 3-- GNAT COMPILER COMPONENTS -- 4-- -- 5-- S E M _ C H 7 -- 6-- -- 7-- S p e c -- 8-- -- 9-- Copyright (C) 1992-2020, 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 26with Types; use Types; 27 28package Sem_Ch7 is 29 30 procedure Analyze_Package_Body (N : Node_Id); 31 procedure Analyze_Package_Declaration (N : Node_Id); 32 procedure Analyze_Package_Specification (N : Node_Id); 33 procedure Analyze_Private_Type_Declaration (N : Node_Id); 34 35 procedure End_Package_Scope (P : Entity_Id); 36 -- Calls Uninstall_Declarations, and then pops the scope stack 37 38 procedure Exchange_Declarations (Id : Entity_Id); 39 -- Exchange private and full declaration on entry/exit from a package 40 -- declaration or body. The semantic links of the respective nodes 41 -- are preserved in the exchange. 42 43 procedure Install_Visible_Declarations (P : Entity_Id); 44 procedure Install_Private_Declarations (P : Entity_Id); 45 46 -- On entrance to a package body, make declarations in package spec 47 -- immediately visible. 48 -- 49 -- When compiling the body of a package, both routines are called in 50 -- succession. When compiling the body of a child package, the call 51 -- to Install_Private_Declaration is immediate for private children, 52 -- but is deferred until the compilation of the private part of the 53 -- child for public child packages. 54 55 function Unit_Requires_Body 56 (Pack_Id : Entity_Id; 57 Do_Abstract_States : Boolean := False) return Boolean; 58 -- Determine whether package Pack_Id requires a body. A specification needs 59 -- a body if it contains declarations that require completion in the body. 60 -- A non-Ghost [generic] package does not require a body when it declares 61 -- Ghost entities exclusively. When flag Do_Abstract_States is set to True, 62 -- non-null abstract states are considered in determining the need for a 63 -- body. 64 65 procedure May_Need_Implicit_Body (E : Entity_Id); 66 -- If a package declaration contains tasks or RACWs and does not require 67 -- a body, create an implicit body at the end of the current declarative 68 -- part to activate those tasks or contain the bodies for the RACW 69 -- calling stubs. 70 71 procedure New_Private_Type (N : Node_Id; Id : Entity_Id; Def : Node_Id); 72 -- Common processing for private type declarations and for formal private 73 -- type declarations. For private types, N and Def are the type declaration 74 -- node; for formal private types, Def is the formal type definition. 75 76 procedure Uninstall_Declarations (P : Entity_Id); 77 -- At the end of a package declaration or body, declarations in the visible 78 -- part are no longer immediately visible, and declarations in the private 79 -- part are not visible at all. For inner packages, place visible entities 80 -- at the end of their homonym chains. For compilation units, make 81 -- all entities invisible. In both cases, exchange private and visible 82 -- declarations to restore order of elaboration. 83 84end Sem_Ch7; 85