File : validsw.adb
1 ------------------------------------------------------------------------------
2 -- --
3 -- GNAT COMPILER COMPONENTS --
4 -- --
5 -- V A L I D S W --
6 -- --
7 -- B o d y --
8 -- --
9 -- Copyright (C) 2001-2013, 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 Opt; use Opt;
27 with Output; use Output;
28
29 package body Validsw is
30
31 ----------------------------------
32 -- Reset_Validity_Check_Options --
33 ----------------------------------
34
35 procedure Reset_Validity_Check_Options is
36 begin
37 Validity_Check_Components := False;
38 Validity_Check_Copies := False;
39 Validity_Check_Default := True;
40 Validity_Check_Floating_Point := False;
41 Validity_Check_In_Out_Params := False;
42 Validity_Check_In_Params := False;
43 Validity_Check_Operands := False;
44 Validity_Check_Returns := False;
45 Validity_Check_Subscripts := False;
46 Validity_Check_Tests := False;
47 end Reset_Validity_Check_Options;
48
49 ---------------------------------
50 -- Save_Validity_Check_Options --
51 ---------------------------------
52
53 procedure Save_Validity_Check_Options
54 (Options : out Validity_Check_Options)
55 is
56 P : Natural := 0;
57
58 procedure Add (C : Character; S : Boolean);
59 -- Add given character C to string if switch S is true
60
61 procedure Add (C : Character; S : Boolean) is
62 begin
63 if S then
64 P := P + 1;
65 Options (P) := C;
66 end if;
67 end Add;
68
69 -- Start of processing for Save_Validity_Check_Options
70
71 begin
72 for K in Options'Range loop
73 Options (K) := ' ';
74 end loop;
75
76 Add ('n', not Validity_Check_Default);
77
78 Add ('c', Validity_Check_Copies);
79 Add ('e', Validity_Check_Components);
80 Add ('f', Validity_Check_Floating_Point);
81 Add ('i', Validity_Check_In_Params);
82 Add ('m', Validity_Check_In_Out_Params);
83 Add ('o', Validity_Check_Operands);
84 Add ('r', Validity_Check_Returns);
85 Add ('s', Validity_Check_Subscripts);
86 Add ('t', Validity_Check_Tests);
87 end Save_Validity_Check_Options;
88
89 ----------------------------------------
90 -- Set_Default_Validity_Check_Options --
91 ----------------------------------------
92
93 procedure Set_Default_Validity_Check_Options is
94 begin
95 Reset_Validity_Check_Options;
96 Set_Validity_Check_Options ("d");
97 end Set_Default_Validity_Check_Options;
98
99 --------------------------------
100 -- Set_Validity_Check_Options --
101 --------------------------------
102
103 -- Version used when no error checking is required
104
105 procedure Set_Validity_Check_Options (Options : String) is
106 OK : Boolean;
107 EC : Natural;
108 pragma Warnings (Off, OK);
109 pragma Warnings (Off, EC);
110 begin
111 Set_Validity_Check_Options (Options, OK, EC);
112 end Set_Validity_Check_Options;
113
114 -- Normal version with error checking
115
116 procedure Set_Validity_Check_Options
117 (Options : String;
118 OK : out Boolean;
119 Err_Col : out Natural)
120 is
121 J : Natural;
122 C : Character;
123
124 begin
125 J := Options'First;
126 while J <= Options'Last loop
127 C := Options (J);
128 J := J + 1;
129
130 -- Turn on validity checking (gets turned off by Vn)
131
132 Validity_Checks_On := True;
133
134 case C is
135
136 when 'c' =>
137 Validity_Check_Copies := True;
138
139 when 'd' =>
140 Validity_Check_Default := True;
141
142 when 'e' =>
143 Validity_Check_Components := True;
144
145 when 'f' =>
146 Validity_Check_Floating_Point := True;
147
148 when 'i' =>
149 Validity_Check_In_Params := True;
150
151 when 'm' =>
152 Validity_Check_In_Out_Params := True;
153
154 when 'o' =>
155 Validity_Check_Operands := True;
156
157 when 'p' =>
158 Validity_Check_Parameters := True;
159
160 when 'r' =>
161 Validity_Check_Returns := True;
162
163 when 's' =>
164 Validity_Check_Subscripts := True;
165
166 when 't' =>
167 Validity_Check_Tests := True;
168
169 when 'C' =>
170 Validity_Check_Copies := False;
171
172 when 'D' =>
173 Validity_Check_Default := False;
174
175 when 'E' =>
176 Validity_Check_Components := False;
177
178 when 'F' =>
179 Validity_Check_Floating_Point := False;
180
181 when 'I' =>
182 Validity_Check_In_Params := False;
183
184 when 'M' =>
185 Validity_Check_In_Out_Params := False;
186
187 when 'O' =>
188 Validity_Check_Operands := False;
189
190 when 'P' =>
191 Validity_Check_Parameters := False;
192
193 when 'R' =>
194 Validity_Check_Returns := False;
195
196 when 'S' =>
197 Validity_Check_Subscripts := False;
198
199 when 'T' =>
200 Validity_Check_Tests := False;
201
202 when 'a' =>
203 Validity_Check_Components := True;
204 Validity_Check_Copies := True;
205 Validity_Check_Default := True;
206 Validity_Check_Floating_Point := True;
207 Validity_Check_In_Out_Params := True;
208 Validity_Check_In_Params := True;
209 Validity_Check_Operands := True;
210 Validity_Check_Parameters := True;
211 Validity_Check_Returns := True;
212 Validity_Check_Subscripts := True;
213 Validity_Check_Tests := True;
214
215 when 'n' =>
216 Validity_Check_Components := False;
217 Validity_Check_Copies := False;
218 Validity_Check_Default := False;
219 Validity_Check_Floating_Point := False;
220 Validity_Check_In_Out_Params := False;
221 Validity_Check_In_Params := False;
222 Validity_Check_Operands := False;
223 Validity_Check_Parameters := False;
224 Validity_Check_Returns := False;
225 Validity_Check_Subscripts := False;
226 Validity_Check_Tests := False;
227 Validity_Checks_On := False;
228
229 when ' ' =>
230 null;
231
232 when others =>
233 if Ignore_Unrecognized_VWY_Switches then
234 Write_Line ("unrecognized switch -gnatV" & C & " ignored");
235 else
236 OK := False;
237 Err_Col := J - 1;
238 return;
239 end if;
240
241 end case;
242 end loop;
243
244 OK := True;
245 Err_Col := Options'Last + 1;
246 end Set_Validity_Check_Options;
247
248 end Validsw;