/* Language-independent APIs to enable/disable per-location warnings. | |

Copyright (C) 2021 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, | |

/* All other unclassified warnings. */ | |

NW_OTHER = 1 << 5, | |

/* All groups of warnings. */ | |

NW_ALL = (NW_ACCESS | NW_LEXICAL | NW_NONNULL | |

| NW_UNINIT | NW_VFLOW | 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 int_hash <location_t, 0, UINT_MAX> xint_hash_t; | |

typedef hash_map<xint_hash_t, nowarn_spec_t> xint_hash_map_t; | |

/* A mapping from a 'location_t' to the warning spec set for it. */ | |

extern GTY(()) xint_hash_map_t *nowarn_map; | |

#endif // DIAGNOSTIC_SPEC_H_INCLUDED |