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/* Language-independent APIs to enable/disable per-location warnings.
Copyright (C) 2021-2022 Free Software Foundation, Inc.
Contributed by Martin Sebor <msebor@redhat.com>
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
Software Foundation; either version 3, or (at your option) any later
version.
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING3. If not see
<http://www.gnu.org/licenses/>. */
#ifndef DIAGNOSTIC_SPEC_H_INCLUDED
#define DIAGNOSTIC_SPEC_H_INCLUDED
#include "hash-map.h"
/* A "bitset" of warning groups. */
class nowarn_spec_t
{
public:
enum
{
/* Middle end warnings about invalid accesses. */
NW_ACCESS = 1 << 0,
/* Front end/lexical warnings. */
NW_LEXICAL = 1 << 1,
/* Warnings about null pointers. */
NW_NONNULL = 1 << 2,
/* Warnings about uninitialized reads. */
NW_UNINIT = 1 << 3,
/* Warnings about arithmetic overflow. */
NW_VFLOW = 1 << 4,
/* Warnings about dangling pointers. */
NW_DANGLING = 1 << 5,
/* All other unclassified warnings. */
NW_OTHER = 1 << 6,
/* All groups of warnings. */
NW_ALL = (NW_ACCESS | NW_LEXICAL | NW_NONNULL
| NW_UNINIT | NW_VFLOW | NW_DANGLING | NW_OTHER)
};
nowarn_spec_t (): m_bits () { }
nowarn_spec_t (opt_code);
/* Return the raw bitset. */
operator unsigned() const
{
return m_bits;
}
/* Return true if the bitset is clear. */
bool operator!() const
{
return !m_bits;
}
/* Return the inverse of the bitset. */
nowarn_spec_t operator~() const
{
nowarn_spec_t res (*this);
res.m_bits &= ~NW_ALL;
return res;
}
/* Set *THIS to the bitwise OR of *THIS and RHS. */
nowarn_spec_t& operator|= (const nowarn_spec_t &rhs)
{
m_bits |= rhs.m_bits;
return *this;
}
/* Set *THIS to the bitwise AND of *THIS and RHS. */
nowarn_spec_t& operator&= (const nowarn_spec_t &rhs)
{
m_bits &= rhs.m_bits;
return *this;
}
/* Set *THIS to the bitwise exclusive OR of *THIS and RHS. */
nowarn_spec_t& operator^= (const nowarn_spec_t &rhs)
{
m_bits ^= rhs.m_bits;
return *this;
}
private:
/* Bitset of warning groups. */
unsigned m_bits;
};
/* Return the bitwise OR of LHS and RHS. */
inline nowarn_spec_t
operator| (const nowarn_spec_t &lhs, const nowarn_spec_t &rhs)
{
return nowarn_spec_t (lhs) |= rhs;
}
/* Return the bitwise AND of LHS and RHS. */
inline nowarn_spec_t
operator& (const nowarn_spec_t &lhs, const nowarn_spec_t &rhs)
{
return nowarn_spec_t (lhs) &= rhs;
}
/* Return true if LHS is equal RHS. */
inline bool
operator== (const nowarn_spec_t &lhs, const nowarn_spec_t &rhs)
{
return static_cast<unsigned>(lhs) == static_cast<unsigned>(rhs);
}
/* Return true if LHS is not equal RHS. */
inline bool
operator!= (const nowarn_spec_t &lhs, const nowarn_spec_t &rhs)
{
return !(lhs == rhs);
}
typedef hash_map<location_hash, nowarn_spec_t> nowarn_map_t;
/* A mapping from a 'location_t' to the warning spec set for it. */
extern GTY(()) nowarn_map_t *nowarn_map;
#endif // DIAGNOSTIC_SPEC_H_INCLUDED
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