1 /* Language-independent APIs to enable/disable per-location warnings. 2 3 Copyright (C) 2021-2022 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 /* All groups of warnings. */ 49 NW_ALL = (NW_ACCESS | NW_LEXICAL | NW_NONNULL 50 | NW_UNINIT | NW_VFLOW | NW_DANGLING | NW_OTHER) 51 }; 52 nowarn_spec_t()53 nowarn_spec_t (): m_bits () { } 54 55 nowarn_spec_t (opt_code); 56 57 /* Return the raw bitset. */ 58 operator unsigned() const 59 { 60 return m_bits; 61 } 62 63 /* Return true if the bitset is clear. */ 64 bool operator!() const 65 { 66 return !m_bits; 67 } 68 69 /* Return the inverse of the bitset. */ 70 nowarn_spec_t operator~() const 71 { 72 nowarn_spec_t res (*this); 73 res.m_bits &= ~NW_ALL; 74 return res; 75 } 76 77 /* Set *THIS to the bitwise OR of *THIS and RHS. */ 78 nowarn_spec_t& operator|= (const nowarn_spec_t &rhs) 79 { 80 m_bits |= rhs.m_bits; 81 return *this; 82 } 83 84 /* Set *THIS to the bitwise AND of *THIS and RHS. */ 85 nowarn_spec_t& operator&= (const nowarn_spec_t &rhs) 86 { 87 m_bits &= rhs.m_bits; 88 return *this; 89 } 90 91 /* Set *THIS to the bitwise exclusive OR of *THIS and RHS. */ 92 nowarn_spec_t& operator^= (const nowarn_spec_t &rhs) 93 { 94 m_bits ^= rhs.m_bits; 95 return *this; 96 } 97 98 private: 99 /* Bitset of warning groups. */ 100 unsigned m_bits; 101 }; 102 103 /* Return the bitwise OR of LHS and RHS. */ 104 105 inline nowarn_spec_t 106 operator| (const nowarn_spec_t &lhs, const nowarn_spec_t &rhs) 107 { 108 return nowarn_spec_t (lhs) |= rhs; 109 } 110 111 /* Return the bitwise AND of LHS and RHS. */ 112 113 inline nowarn_spec_t 114 operator& (const nowarn_spec_t &lhs, const nowarn_spec_t &rhs) 115 { 116 return nowarn_spec_t (lhs) &= rhs; 117 } 118 119 /* Return true if LHS is equal RHS. */ 120 121 inline bool 122 operator== (const nowarn_spec_t &lhs, const nowarn_spec_t &rhs) 123 { 124 return static_cast<unsigned>(lhs) == static_cast<unsigned>(rhs); 125 } 126 127 /* Return true if LHS is not equal RHS. */ 128 129 inline bool 130 operator!= (const nowarn_spec_t &lhs, const nowarn_spec_t &rhs) 131 { 132 return !(lhs == rhs); 133 } 134 135 typedef hash_map<location_hash, nowarn_spec_t> nowarn_map_t; 136 137 /* A mapping from a 'location_t' to the warning spec set for it. */ 138 extern GTY(()) nowarn_map_t *nowarn_map; 139 140 #endif // DIAGNOSTIC_SPEC_H_INCLUDED 141