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) 1992-2001, 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,  59 Temple Place - Suite 330,  Boston, --
  20 -- MA 02111-1307, 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 Opt;      use Opt;
  30 with Restrict; use Restrict;
  31 with Sem_Ch8;  use Sem_Ch8;
  32 with Sinfo;    use Sinfo;
  33 with Stand;    use Stand;
  34
  35 package body Sem_Ch2 is
  36
  37    -------------------------------
  38    -- Analyze_Character_Literal --
  39    -------------------------------
  40
  41    procedure Analyze_Character_Literal (N : Node_Id) is
  42    begin
  43
  44       --  The type is eventually inherited from the context. If expansion
  45       --  has already established the proper type, do not modify it.
  46
  47       if No (Etype (N)) then
  48          Set_Etype (N, Any_Character);
  49       end if;
  50
  51       Set_Is_Static_Expression (N);
  52
  53       if Comes_From_Source (N)
  54         and then not In_Character_Range (Char_Literal_Value (N))
  55       then
  56          Check_Restriction (No_Wide_Characters, N);
  57       end if;
  58    end Analyze_Character_Literal;
  59
  60    ------------------------
  61    -- Analyze_Identifier --
  62    ------------------------
  63
  64    procedure Analyze_Identifier (N : Node_Id) is
  65    begin
  66       --  Ignore call if prior errors, and identifier has no name, since
  67       --  this is the result of some kind of previous error generating a
  68       --  junk identifier.
  69
  70       if Chars (N) in Error_Name_Or_No_Name
  71         and then Total_Errors_Detected /= 0
  72       then
  73          return;
  74       else
  75          Find_Direct_Name (N);
  76       end if;
  77    end Analyze_Identifier;
  78
  79    -----------------------------
  80    -- Analyze_Integer_Literal --
  81    -----------------------------
  82
  83    procedure Analyze_Integer_Literal (N : Node_Id) is
  84    begin
  85       Set_Etype (N, Universal_Integer);
  86       Set_Is_Static_Expression (N);
  87    end Analyze_Integer_Literal;
  88
  89    --------------------------
  90    -- Analyze_Real_Literal --
  91    --------------------------
  92
  93    procedure Analyze_Real_Literal (N : Node_Id) is
  94    begin
  95       Set_Etype (N, Universal_Real);
  96       Set_Is_Static_Expression (N);
  97    end Analyze_Real_Literal;
  98
  99    ----------------------------
 100    -- Analyze_String_Literal --
 101    ----------------------------
 102
 103    procedure Analyze_String_Literal (N : Node_Id) is
 104    begin
 105
 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_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;