1 | /* Language-independent APIs to enable/disable per-location warnings. |
2 | |
3 | Copyright (C) 2021-2023 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 | /* Warnings about dangling pointers. */ |
45 | NW_DANGLING = 1 << 5, |
46 | /* All other unclassified warnings. */ |
47 | NW_OTHER = 1 << 6, |
48 | /* Warnings about redundant calls. */ |
49 | NW_REDUNDANT = 1 << 7, |
50 | /* All groups of warnings. */ |
51 | NW_ALL = (NW_ACCESS | NW_LEXICAL | NW_NONNULL |
52 | | NW_UNINIT | NW_VFLOW | NW_DANGLING | NW_REDUNDANT | NW_OTHER) |
53 | }; |
54 | |
55 | nowarn_spec_t (): m_bits () { } |
56 | |
57 | nowarn_spec_t (opt_code); |
58 | |
59 | /* Return the raw bitset. */ |
60 | operator unsigned() const |
61 | { |
62 | return m_bits; |
63 | } |
64 | |
65 | /* Return true if the bitset is clear. */ |
66 | bool operator!() const |
67 | { |
68 | return !m_bits; |
69 | } |
70 | |
71 | /* Return the inverse of the bitset. */ |
72 | nowarn_spec_t operator~() const |
73 | { |
74 | nowarn_spec_t res (*this); |
75 | res.m_bits &= ~NW_ALL; |
76 | return res; |
77 | } |
78 | |
79 | /* Set *THIS to the bitwise OR of *THIS and RHS. */ |
80 | nowarn_spec_t& operator|= (const nowarn_spec_t &rhs) |
81 | { |
82 | m_bits |= rhs.m_bits; |
83 | return *this; |
84 | } |
85 | |
86 | /* Set *THIS to the bitwise AND of *THIS and RHS. */ |
87 | nowarn_spec_t& operator&= (const nowarn_spec_t &rhs) |
88 | { |
89 | m_bits &= rhs.m_bits; |
90 | return *this; |
91 | } |
92 | |
93 | /* Set *THIS to the bitwise exclusive OR of *THIS and RHS. */ |
94 | nowarn_spec_t& operator^= (const nowarn_spec_t &rhs) |
95 | { |
96 | m_bits ^= rhs.m_bits; |
97 | return *this; |
98 | } |
99 | |
100 | private: |
101 | /* Bitset of warning groups. */ |
102 | unsigned m_bits; |
103 | }; |
104 | |
105 | /* Return the bitwise OR of LHS and RHS. */ |
106 | |
107 | inline nowarn_spec_t |
108 | operator| (const nowarn_spec_t &lhs, const nowarn_spec_t &rhs) |
109 | { |
110 | return nowarn_spec_t (lhs) |= rhs; |
111 | } |
112 | |
113 | /* Return the bitwise AND of LHS and RHS. */ |
114 | |
115 | inline nowarn_spec_t |
116 | operator& (const nowarn_spec_t &lhs, const nowarn_spec_t &rhs) |
117 | { |
118 | return nowarn_spec_t (lhs) &= rhs; |
119 | } |
120 | |
121 | /* Return true if LHS is equal RHS. */ |
122 | |
123 | inline bool |
124 | operator== (const nowarn_spec_t &lhs, const nowarn_spec_t &rhs) |
125 | { |
126 | return static_cast<unsigned>(lhs) == static_cast<unsigned>(rhs); |
127 | } |
128 | |
129 | /* Return true if LHS is not equal RHS. */ |
130 | |
131 | inline bool |
132 | operator!= (const nowarn_spec_t &lhs, const nowarn_spec_t &rhs) |
133 | { |
134 | return !(lhs == rhs); |
135 | } |
136 | |
137 | typedef hash_map<location_hash, nowarn_spec_t> nowarn_map_t; |
138 | |
139 | /* A mapping from a 'location_t' to the warning spec set for it. */ |
140 | extern GTY(()) nowarn_map_t *nowarn_map; |
141 | |
142 | #endif // DIAGNOSTIC_SPEC_H_INCLUDED |
143 | |