File : 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) 1992-2012, 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 Namet; use Namet;
28 with Opt; use Opt;
29 with Restrict; use Restrict;
30 with Rident; use Rident;
31 with Sem_Ch8; use Sem_Ch8;
32 with Sem_Dim; use Sem_Dim;
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
79 Analyze_Dimension (N);
80 end Analyze_Identifier;
81
82 -----------------------------
83 -- Analyze_Integer_Literal --
84 -----------------------------
85
86 procedure Analyze_Integer_Literal (N : Node_Id) is
87 begin
88 Set_Etype (N, Universal_Integer);
89 Set_Is_Static_Expression (N);
90 end Analyze_Integer_Literal;
91
92 --------------------------
93 -- Analyze_Real_Literal --
94 --------------------------
95
96 procedure Analyze_Real_Literal (N : Node_Id) is
97 begin
98 Set_Etype (N, Universal_Real);
99 Set_Is_Static_Expression (N);
100 end Analyze_Real_Literal;
101
102 ----------------------------
103 -- Analyze_String_Literal --
104 ----------------------------
105
106 procedure Analyze_String_Literal (N : Node_Id) is
107 begin
108 -- The type is eventually inherited from the context. If expansion
109 -- has already established the proper type, do not modify it.
110
111 if No (Etype (N)) then
112 Set_Etype (N, Any_String);
113 end if;
114
115 -- String literals are static in Ada 95. Note that if the subtype
116 -- turns out to be non-static, then the Is_Static_Expression flag
117 -- will be reset in Eval_String_Literal.
118
119 if Ada_Version >= Ada_95 then
120 Set_Is_Static_Expression (N);
121 end if;
122
123 if Comes_From_Source (N) and then Has_Wide_Character (N) then
124 Check_Restriction (No_Wide_Characters, N);
125 end if;
126 end Analyze_String_Literal;
127
128 end Sem_Ch2;