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1 | /* Language-independent APIs to enable/disable per-location warnings. |
2 | ||
3 | Copyright (C) 2021 Free Software Foundation, Inc. | |
4 | Contributed by Martin Sebor <msebor@redhat.com> | |
5 | ||
6 | This file is part of GCC. | |
7 | ||
8 | GCC is free software; you can redistribute it and/or modify it under | |
9 | the terms of the GNU General Public License as published by the Free | |
10 | Software Foundation; either version 3, or (at your option) any later | |
11 | version. | |
12 | ||
13 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
14 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
15 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
16 | for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with GCC; see the file COPYING3. If not see | |
20 | <http://www.gnu.org/licenses/>. */ | |
21 | ||
22 | #ifndef DIAGNOSTIC_SPEC_H_INCLUDED | |
23 | #define DIAGNOSTIC_SPEC_H_INCLUDED | |
24 | ||
25 | #include "hash-map.h" | |
26 | ||
27 | /* A "bitset" of warning groups. */ | |
28 | ||
29 | class nowarn_spec_t | |
30 | { | |
31 | public: | |
32 | enum | |
33 | { | |
34 | /* Middle end warnings about invalid accesses. */ | |
35 | NW_ACCESS = 1 << 0, | |
36 | /* Front end/lexical warnings. */ | |
37 | NW_LEXICAL = 1 << 1, | |
38 | /* Warnings about null pointers. */ | |
39 | NW_NONNULL = 1 << 2, | |
40 | /* Warnings about uninitialized reads. */ | |
41 | NW_UNINIT = 1 << 3, | |
42 | /* Warnings about arithmetic overflow. */ | |
43 | NW_VFLOW = 1 << 4, | |
44 | /* All other unclassified warnings. */ | |
45 | NW_OTHER = 1 << 5, | |
46 | /* All groups of warnings. */ | |
47 | NW_ALL = (NW_ACCESS | NW_LEXICAL | NW_NONNULL | |
48 | | NW_UNINIT | NW_VFLOW | NW_OTHER) | |
49 | }; | |
50 | ||
51 | nowarn_spec_t (): m_bits () { } | |
52 | ||
53 | nowarn_spec_t (opt_code); | |
54 | ||
55 | /* Return the raw bitset. */ | |
56 | operator unsigned() const | |
57 | { | |
58 | return m_bits; | |
59 | } | |
60 | ||
61 | /* Return true if the bitset is clear. */ | |
62 | bool operator!() const | |
63 | { | |
64 | return !m_bits; | |
65 | } | |
66 | ||
67 | /* Return the inverse of the bitset. */ | |
68 | nowarn_spec_t operator~() const | |
69 | { | |
70 | nowarn_spec_t res (*this); | |
71 | res.m_bits &= ~NW_ALL; | |
72 | return res; | |
73 | } | |
74 | ||
75 | /* Set *THIS to the bitwise OR of *THIS and RHS. */ | |
76 | nowarn_spec_t& operator|= (const nowarn_spec_t &rhs) | |
77 | { | |
78 | m_bits |= rhs.m_bits; | |
79 | return *this; | |
80 | } | |
81 | ||
82 | /* Set *THIS to the bitwise AND of *THIS and RHS. */ | |
83 | nowarn_spec_t& operator&= (const nowarn_spec_t &rhs) | |
84 | { | |
85 | m_bits &= rhs.m_bits; | |
86 | return *this; | |
87 | } | |
88 | ||
89 | /* Set *THIS to the bitwise exclusive OR of *THIS and RHS. */ | |
90 | nowarn_spec_t& operator^= (const nowarn_spec_t &rhs) | |
91 | { | |
92 | m_bits ^= rhs.m_bits; | |
93 | return *this; | |
94 | } | |
95 | ||
96 | private: | |
97 | /* Bitset of warning groups. */ | |
98 | unsigned m_bits; | |
99 | }; | |
100 | ||
101 | /* Return the bitwise OR of LHS and RHS. */ | |
102 | ||
103 | inline nowarn_spec_t | |
104 | operator| (const nowarn_spec_t &lhs, const nowarn_spec_t &rhs) | |
105 | { | |
106 | return nowarn_spec_t (lhs) |= rhs; | |
107 | } | |
108 | ||
109 | /* Return the bitwise AND of LHS and RHS. */ | |
110 | ||
111 | inline nowarn_spec_t | |
112 | operator& (const nowarn_spec_t &lhs, const nowarn_spec_t &rhs) | |
113 | { | |
114 | return nowarn_spec_t (lhs) &= rhs; | |
115 | } | |
116 | ||
117 | /* Return true if LHS is equal RHS. */ | |
118 | ||
119 | inline bool | |
120 | operator== (const nowarn_spec_t &lhs, const nowarn_spec_t &rhs) | |
121 | { | |
122 | return static_cast<unsigned>(lhs) == static_cast<unsigned>(rhs); | |
123 | } | |
124 | ||
125 | /* Return true if LHS is not equal RHS. */ | |
126 | ||
127 | inline bool | |
128 | operator!= (const nowarn_spec_t &lhs, const nowarn_spec_t &rhs) | |
129 | { | |
130 | return !(lhs == rhs); | |
131 | } | |
132 | ||
f861ed8b | 133 | typedef hash_map<location_hash, nowarn_spec_t> nowarn_map_t; |
7036e9ef | 134 | |
19853922 | 135 | /* A mapping from a 'location_t' to the warning spec set for it. */ |
f861ed8b | 136 | extern GTY(()) nowarn_map_t *nowarn_map; |
7036e9ef MS |
137 | |
138 | #endif // DIAGNOSTIC_SPEC_H_INCLUDED |