gcc/ada/sem_ch2.adb

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                         GNAT COMPILER COMPONENTS                         --
   4 --                                                                          --
   5 --                              S E M _ C H 2                               --
   6 --                                                                          --
   7 --                                 B o d y                                  --
   8 --                                                                          --
   9 --          Copyright (C) 1992-2007, 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 with Atree;    use Atree;
  27 with Errout;   use Errout;
  28 with Namet;    use Namet;
  29 with Opt;      use Opt;
  30 with Restrict; use Restrict;
  31 with Rident;   use Rident;
  32 with Sem_Ch8;  use Sem_Ch8;
  33 with Sinfo;    use Sinfo;
  34 with Stand;    use Stand;
  35 with Uintp;    use Uintp;
  36
  37 package body Sem_Ch2 is
  38
  39    -------------------------------
  40    -- Analyze_Character_Literal --
  41    -------------------------------
  42
  43    procedure Analyze_Character_Literal (N : Node_Id) is
  44    begin
  45       --  The type is eventually inherited from the context. If expansion
  46       --  has already established the proper type, do not modify it.
  47
  48       if No (Etype (N)) then
  49          Set_Etype (N, Any_Character);
  50       end if;
  51
  52       Set_Is_Static_Expression (N);
  53
  54       if Comes_From_Source (N)
  55         and then not In_Character_Range (UI_To_CC (Char_Literal_Value (N)))
  56       then
  57          Check_Restriction (No_Wide_Characters, N);
  58       end if;
  59    end Analyze_Character_Literal;
  60
  61    ------------------------
  62    -- Analyze_Identifier --
  63    ------------------------
  64
  65    procedure Analyze_Identifier (N : Node_Id) is
  66    begin
  67       --  Ignore call if prior errors, and identifier has no name, since
  68       --  this is the result of some kind of previous error generating a
  69       --  junk identifier.
  70
  71       if Chars (N) in Error_Name_Or_No_Name
  72         and then Total_Errors_Detected /= 0
  73       then
  74          return;
  75       else
  76          Find_Direct_Name (N);
  77       end if;
  78    end Analyze_Identifier;
  79
  80    -----------------------------
  81    -- Analyze_Integer_Literal --
  82    -----------------------------
  83
  84    procedure Analyze_Integer_Literal (N : Node_Id) is
  85    begin
  86       Set_Etype (N, Universal_Integer);
  87       Set_Is_Static_Expression (N);
  88    end Analyze_Integer_Literal;
  89
  90    --------------------------
  91    -- Analyze_Real_Literal --
  92    --------------------------
  93
  94    procedure Analyze_Real_Literal (N : Node_Id) is
  95    begin
  96       Set_Etype (N, Universal_Real);
  97       Set_Is_Static_Expression (N);
  98    end Analyze_Real_Literal;
  99
 100    ----------------------------
 101    -- Analyze_String_Literal --
 102    ----------------------------
 103
 104    procedure Analyze_String_Literal (N : Node_Id) is
 105    begin
 106       --  The type is eventually inherited from the context. If expansion
 107       --  has already established the proper type, do not modify it.
 108
 109       if No (Etype (N)) then
 110          Set_Etype (N, Any_String);
 111       end if;
 112
 113       --  String literals are static in Ada 95. Note that if the subtype
 114       --  turns out to be non-static, then the Is_Static_Expression flag
 115       --  will be reset in Eval_String_Literal.
 116
 117       if Ada_Version >= Ada_95 then
 118          Set_Is_Static_Expression (N);
 119       end if;
 120
 121       if Comes_From_Source (N) and then Has_Wide_Character (N) then
 122          Check_Restriction (No_Wide_Characters, N);
 123       end if;
 124    end Analyze_String_Literal;
 125
 126 end Sem_Ch2;