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 2,  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 COPYING.  If not, write --
  19 -- to  the  Free Software Foundation,  51  Franklin  Street,  Fifth  Floor, --
  20 -- Boston, MA 02110-1301, USA.                                              --
  21 --                                                                          --
  22 -- GNAT was originally developed  by the GNAT team at  New York University. --
  23 -- Extensive contributions were provided by Ada Core Technologies Inc.      --
  24 --                                                                          --
  25 ------------------------------------------------------------------------------
  26
  27 with Atree;    use Atree;
  28 with Errout;   use Errout;
  29 with Namet;    use Namet;
  30 with Opt;      use Opt;
  31 with Restrict; use Restrict;
  32 with Rident;   use Rident;
  33 with Sem_Ch8;  use Sem_Ch8;
  34 with Sinfo;    use Sinfo;
  35 with Stand;    use Stand;
  36 with Uintp;    use Uintp;
  37
  38 package body Sem_Ch2 is
  39
  40    -------------------------------
  41    -- Analyze_Character_Literal --
  42    -------------------------------
  43
  44    procedure Analyze_Character_Literal (N : Node_Id) is
  45    begin
  46       --  The type is eventually inherited from the context. If expansion
  47       --  has already established the proper type, do not modify it.
  48
  49       if No (Etype (N)) then
  50          Set_Etype (N, Any_Character);
  51       end if;
  52
  53       Set_Is_Static_Expression (N);
  54
  55       if Comes_From_Source (N)
  56         and then not In_Character_Range (UI_To_CC (Char_Literal_Value (N)))
  57       then
  58          Check_Restriction (No_Wide_Characters, N);
  59       end if;
  60    end Analyze_Character_Literal;
  61
  62    ------------------------
  63    -- Analyze_Identifier --
  64    ------------------------
  65
  66    procedure Analyze_Identifier (N : Node_Id) is
  67    begin
  68       --  Ignore call if prior errors, and identifier has no name, since
  69       --  this is the result of some kind of previous error generating a
  70       --  junk identifier.
  71
  72       if Chars (N) in Error_Name_Or_No_Name
  73         and then Total_Errors_Detected /= 0
  74       then
  75          return;
  76       else
  77          Find_Direct_Name (N);
  78       end if;
  79    end Analyze_Identifier;
  80
  81    -----------------------------
  82    -- Analyze_Integer_Literal --
  83    -----------------------------
  84
  85    procedure Analyze_Integer_Literal (N : Node_Id) is
  86    begin
  87       Set_Etype (N, Universal_Integer);
  88       Set_Is_Static_Expression (N);
  89    end Analyze_Integer_Literal;
  90
  91    --------------------------
  92    -- Analyze_Real_Literal --
  93    --------------------------
  94
  95    procedure Analyze_Real_Literal (N : Node_Id) is
  96    begin
  97       Set_Etype (N, Universal_Real);
  98       Set_Is_Static_Expression (N);
  99    end Analyze_Real_Literal;
 100
 101    ----------------------------
 102    -- Analyze_String_Literal --
 103    ----------------------------
 104
 105    procedure Analyze_String_Literal (N : Node_Id) is
 106    begin
 107       --  The type is eventually inherited from the context. If expansion
 108       --  has already established the proper type, do not modify it.
 109
 110       if No (Etype (N)) then
 111          Set_Etype (N, Any_String);
 112       end if;
 113
 114       --  String literals are static in Ada 95. Note that if the subtype
 115       --  turns out to be non-static, then the Is_Static_Expression flag
 116       --  will be reset in Eval_String_Literal.
 117
 118       if Ada_Version >= Ada_95 then
 119          Set_Is_Static_Expression (N);
 120       end if;
 121
 122       if Comes_From_Source (N) and then Has_Wide_Character (N) then
 123          Check_Restriction (No_Wide_Characters, N);
 124       end if;
 125    end Analyze_String_Literal;
 126
 127 end Sem_Ch2;