143 lines
3.5 KiB
C++
143 lines
3.5 KiB
C++
/* Language-independent APIs to enable/disable per-location warnings.
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Copyright (C) 2021-2023 Free Software Foundation, Inc.
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Contributed by Martin Sebor <msebor@redhat.com>
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 3, or (at your option) any later
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version.
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GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with GCC; see the file COPYING3. If not see
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<http://www.gnu.org/licenses/>. */
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#ifndef DIAGNOSTIC_SPEC_H_INCLUDED
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#define DIAGNOSTIC_SPEC_H_INCLUDED
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#include "hash-map.h"
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/* A "bitset" of warning groups. */
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class nowarn_spec_t
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{
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public:
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enum
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{
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/* Middle end warnings about invalid accesses. */
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NW_ACCESS = 1 << 0,
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/* Front end/lexical warnings. */
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NW_LEXICAL = 1 << 1,
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/* Warnings about null pointers. */
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NW_NONNULL = 1 << 2,
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/* Warnings about uninitialized reads. */
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NW_UNINIT = 1 << 3,
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/* Warnings about arithmetic overflow. */
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NW_VFLOW = 1 << 4,
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/* Warnings about dangling pointers. */
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NW_DANGLING = 1 << 5,
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/* All other unclassified warnings. */
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NW_OTHER = 1 << 6,
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/* Warnings about redundant calls. */
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NW_REDUNDANT = 1 << 7,
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/* All groups of warnings. */
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NW_ALL = (NW_ACCESS | NW_LEXICAL | NW_NONNULL
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| NW_UNINIT | NW_VFLOW | NW_DANGLING | NW_REDUNDANT | NW_OTHER)
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};
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nowarn_spec_t (): m_bits () { }
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nowarn_spec_t (opt_code);
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/* Return the raw bitset. */
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operator unsigned() const
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{
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return m_bits;
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}
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/* Return true if the bitset is clear. */
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bool operator!() const
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{
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return !m_bits;
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}
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/* Return the inverse of the bitset. */
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nowarn_spec_t operator~() const
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{
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nowarn_spec_t res (*this);
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res.m_bits &= ~NW_ALL;
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return res;
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}
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/* Set *THIS to the bitwise OR of *THIS and RHS. */
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nowarn_spec_t& operator|= (const nowarn_spec_t &rhs)
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{
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m_bits |= rhs.m_bits;
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return *this;
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}
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/* Set *THIS to the bitwise AND of *THIS and RHS. */
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nowarn_spec_t& operator&= (const nowarn_spec_t &rhs)
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{
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m_bits &= rhs.m_bits;
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return *this;
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}
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/* Set *THIS to the bitwise exclusive OR of *THIS and RHS. */
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nowarn_spec_t& operator^= (const nowarn_spec_t &rhs)
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{
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m_bits ^= rhs.m_bits;
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return *this;
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}
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private:
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/* Bitset of warning groups. */
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unsigned m_bits;
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};
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/* Return the bitwise OR of LHS and RHS. */
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inline nowarn_spec_t
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operator| (const nowarn_spec_t &lhs, const nowarn_spec_t &rhs)
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{
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return nowarn_spec_t (lhs) |= rhs;
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}
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/* Return the bitwise AND of LHS and RHS. */
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inline nowarn_spec_t
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operator& (const nowarn_spec_t &lhs, const nowarn_spec_t &rhs)
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{
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return nowarn_spec_t (lhs) &= rhs;
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}
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/* Return true if LHS is equal RHS. */
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inline bool
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operator== (const nowarn_spec_t &lhs, const nowarn_spec_t &rhs)
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{
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return static_cast<unsigned>(lhs) == static_cast<unsigned>(rhs);
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}
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/* Return true if LHS is not equal RHS. */
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inline bool
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operator!= (const nowarn_spec_t &lhs, const nowarn_spec_t &rhs)
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{
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return !(lhs == rhs);
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}
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typedef hash_map<location_hash, nowarn_spec_t> nowarn_map_t;
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/* A mapping from a 'location_t' to the warning spec set for it. */
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extern GTY(()) nowarn_map_t *nowarn_map;
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#endif // DIAGNOSTIC_SPEC_H_INCLUDED
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