libcruft-util/debug.hpp

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/*
* This file is part of libgim.
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*
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* libgim is free software: you can redistribute it and/or modify it under the
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* terms of the GNU General Public License as published by the Free Software
* Foundation, either version 3 of the License, or (at your option) any later
* version.
*
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* libgim 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 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 libgim. If not, see <http://www.gnu.org/licenses/>.
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*
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* Copyright 2010-2012 Danny Robson <danny@nerdcruft.net>
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*/
#ifndef __DEBUG_HPP
#define __DEBUG_HPP
#include "annotations.hpp"
#include "maths.hpp"
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#include <stdexcept>
#include <iostream>
#include <sstream>
#ifdef ENABLE_DEBUGGING
#define DEBUG_ONLY(X) \
X;
#else
#define DEBUG_ONLY(X)
#endif
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#define TRACE { \
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std::cerr << __FILE__ << ":" << __func__ << ":" << __LINE__ << std::endl; \
}
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#define WARN(MSG) do { \
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std::cerr << __FILE__ << ":" << __func__ << ":" __LINE__ << ", " << (MSG) << std::endl; \
} while (0)
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#define WARN_IF(C, MSG) do { \
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if (C) { \
std::cerr << __FILE__ << ":" << __func__ << ":" __LINE__ << ", " << (MSG) << std::endl; \
} \
} while (0)
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#define VERIFY_SOFT(C, COND) ({ \
const auto __DEBUG_value = (C); \
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CHECK_SOFT(__DEBUG_value COND); \
__DEBUG_value; \
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})
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#define VERIFY_HARD(C, COND) ({ \
const auto __DEBUG_value = (C); \
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CHECK_HARD(__DEBUG_value COND); \
__DEBUG_value; \
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})
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#define _CHECK_META(C, SUCCESS, FAILURE) do { \
const auto __DEBUG_value = (C); \
if (unlikely (!__DEBUG_value)) { \
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std::cerr << PACKAGE << ": " \
<< __FILE__ << ":" \
<< __LINE__ << ": " \
<< __FUNCTION__ \
<< ". Assertion '" << #C \
<< "' failed: " << __DEBUG_value << std::endl; \
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\
{ FAILURE } \
} else { \
{ SUCCESS } \
} \
} while (0)
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#if defined(ENABLE_DEBUGGING)
#define CHECK_HARD(C) _CHECK_META((C), { ; }, { panic (); })
#define CHECK_SOFT(C) _CHECK_META((C), { ; }, { breakpoint (); })
#define CHECK(C) CHECK_HARD(C)
#else
#define CHECK_HARD(C) { };
#define CHECK_SOFT(C) { };
#define CHECK(C) CHECK_SOFT(C)
#endif
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#define CHECK_EQ(A,B) do { \
const auto __a = (A); \
const auto __b = (B); \
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_CHECK_META (almost_equal (__a, __b), \
{ ; }, \
{ \
std::ostringstream os; \
os << "expected equality.\n" \
<< "__a: " << #A << " is " << __a << ")" \
<< "\n != \n" \
<< "__b: " << #B << " is " << __b << ")"; \
panic (os.str ()); \
}); \
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} while (0)
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#define CHECK_LT(A,B) do { \
const auto __a = (A); \
const auto __b = (B); \
_CHECK_META (__a < __b, \
{ ; }, \
{ \
std::ostringstream os; \
os << "expected less than.\n" \
<< "__a: " << #A << " is " << __a << ")" \
<< "\n >= \n" \
<< "__b: " << #B << " is " << __b << ")"; \
panic (os.str ()); \
}); \
} while (0)
#define CHECK_GT(A,B) do { \
const auto __a = (A); \
const auto __b = (B); \
_CHECK_META (__a > __b, \
{ ; }, \
{ \
std::ostringstream os; \
os << "expected greater than.\n" \
<< "__a: " << #A << " is " << __a << ")" \
<< "\n <= \n" \
<< "__b: " << #B << " is " << __b << ")"; \
panic (os.str ()); \
}); \
} while (0)
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#define CHECK_NEQ(A,B) do { \
const auto __a = (A); \
const auto __b = (B); \
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_CHECK_META (!almost_equal (__a, __b), \
{ ; }, \
{ \
std::ostringstream os; \
os << "unexpected equality.\n" \
<< "__a: " << #A << " is " << __a << ")" \
<< "\n == \n" \
<< "__b: " << #B << " is " << __b << ")"; \
panic (os.str ()); \
}); \
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} while (0)
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#define CHECK_THROWS(E,C) do { \
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bool caught = false; \
\
try \
{ C; } \
catch (E) \
{ caught = true; } \
\
if (unlikely (!caught)) \
panic ("expected exception: " #E); \
} while (0)
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#define CHECK_NOTHROW(C) do { \
try { \
C; \
} catch (...) { \
panic ("unexpected exception"); \
} \
} while (0)
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class panic_error {
protected:
std::string m_what;
public:
panic_error (const std::string &_what):
m_what (_what)
{ ; }
};
void panic (const std::string&) terminal;
void panic (void) terminal;
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void not_implemented (void) terminal;
void not_implemented (const char*) terminal;
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void unreachable (void) terminal;
void unreachable (const std::string&) terminal;
void unusual (void);
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void breakpoint (void);
void enable_fpe (void);
void disable_fpe (void);
namespace debug {
void init (void);
}
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#endif // __DEBUG_HPP