1 ------------------------------------------------------------------------------
3 -- GNAT COMPILER COMPONENTS --
9 -- Copyright (C) 1992-2010, Free Software Foundation, Inc. --
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. --
21 -- GNAT was originally developed by the GNAT team at New York University. --
22 -- Extensive contributions were provided by Ada Core Technologies Inc. --
24 ------------------------------------------------------------------------------
26 pragma Style_Checks (All_Checks);
27 -- Turn off subprogram body ordering check. Subprograms are in order
28 -- by RM section rather than alphabetical
33 -----------------------
34 -- Local Subprograms --
35 -----------------------
37 function P_Use_Package_Clause return Node_Id;
38 function P_Use_Type_Clause return Node_Id;
44 -- USE_CLAUSE ::= USE_PACKAGE_CLAUSE | USE_TYPE_CLAUSE
46 -- The caller has checked that the initial token is USE
48 -- Error recovery: cannot raise Error_Resync
50 function P_Use_Clause return Node_Id is
54 if Token = Tok_Type or else Token = Tok_All then
55 return P_Use_Type_Clause;
57 return P_Use_Package_Clause;
61 -----------------------------
62 -- 8.4 Use Package Clause --
63 -----------------------------
65 -- USE_PACKAGE_CLAUSE ::= use package_NAME {, package_NAME};
67 -- The caller has scanned out the USE keyword
69 -- Error recovery: cannot raise Error_Resync
71 function P_Use_Package_Clause return Node_Id is
75 Use_Node := New_Node (N_Use_Package_Clause, Prev_Token_Ptr);
76 Set_Names (Use_Node, New_List);
78 if Token = Tok_Package then
79 Error_Msg_SC ("PACKAGE should not appear here");
84 Append (P_Qualified_Simple_Name, Names (Use_Node));
85 exit when Token /= Tok_Comma;
91 end P_Use_Package_Clause;
93 --------------------------
94 -- 8.4 Use Type Clause --
95 --------------------------
97 -- USE_TYPE_CLAUSE ::= use [ALL] type SUBTYPE_MARK {, SUBTYPE_MARK};
99 -- The caller has checked that the initial token is USE, scanned it out
100 -- and that the current token is either ALL or TYPE.
102 -- Note: Use of ALL is an Ada 2012 feature
104 -- Error recovery: cannot raise Error_Resync
106 function P_Use_Type_Clause return Node_Id is
108 All_Present : Boolean;
111 if Token = Tok_All then
112 if Ada_Version < Ada_2012 then
113 Error_Msg_SC ("|`USE ALL TYPE` is an Ada 2012 feature");
114 Error_Msg_SC ("\|unit must be compiled with -gnat2012 switch");
121 All_Present := False;
124 Use_Node := New_Node (N_Use_Type_Clause, Prev_Token_Ptr);
125 Set_All_Present (Use_Node, All_Present);
126 Set_Subtype_Marks (Use_Node, New_List);
127 Set_Used_Operations (Use_Node, No_Elist);
129 if Ada_Version = Ada_83 then
130 Error_Msg_SC ("(Ada 83) use type not allowed!");
136 Append (P_Subtype_Mark, Subtype_Marks (Use_Node));
138 exit when Token /= Tok_Comma;
144 end P_Use_Type_Clause;
146 -------------------------------
147 -- 8.5 Renaming Declaration --
148 -------------------------------
150 -- Object renaming declarations and exception renaming declarations
151 -- are parsed by P_Identifier_Declaration (3.3.1)
153 -- Subprogram renaming declarations are parsed by P_Subprogram (6.1)
155 -- Package renaming declarations are parsed by P_Package (7.1)
157 -- Generic renaming declarations are parsed by P_Generic (12.1)
159 ----------------------------------------
160 -- 8.5.1 Object Renaming Declaration --
161 ----------------------------------------
163 -- Parsed by P_Identifier_Declarations (3.3.1)
165 ----------------------------------------
166 -- 8.5.2 Exception Renaming Declaration --
167 ----------------------------------------
169 -- Parsed by P_Identifier_Declarations (3.3.1)
171 -----------------------------------------
172 -- 8.5.3 Package Renaming Declaration --
173 -----------------------------------------
175 -- Parsed by P_Package (7.1)
177 --------------------------------------------
178 -- 8.5.4 Subprogram Renaming Declaration --
179 --------------------------------------------
181 -- Parsed by P_Subprogram (6.1)
183 -----------------------------------------
184 -- 8.5.2 Generic Renaming Declaration --
185 -----------------------------------------
187 -- Parsed by P_Generic (12.1)