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#ifndef SOURCETOOLS_CORE_MACROS_H
#define SOURCETOOLS_CORE_MACROS_H
#include <cstdio>
#include <string>
#include <iostream>
/* Utility */
#ifdef __GNUC__
# define LIKELY(x) __builtin_expect(!!(x), 1)
# define UNLIKELY(x) __builtin_expect(!!(x), 0)
#else
# define LIKELY(x) x
# define UNLIKELY(x) x
#endif
#define SOURCE_TOOLS_CHECK_MASK(__SELF__, __MASK__) \
((__MASK__ & __SELF__) == __MASK__)
#define SOURCE_TOOLS_LOWER_BITS(__VALUE__, __BITS__) \
(((1 << __BITS__) - 1) & __VALUE__)
#define SOURCE_TOOLS_PASTE(__X__, __Y__) __X__ ## __Y__
#define SOURCE_TOOLS_STRINGIFY(__X__) #__X__
/* Logging */
namespace sourcetools {
namespace debug {
inline std::string shortFilePath(const std::string& filePath)
{
std::string::size_type index = filePath.find_last_of("/");
if (index != std::string::npos)
return filePath.substr(index + 1);
return filePath;
}
inline std::string debugPosition(const char* filePath, int line)
{
static const int N = 1024;
char buffer[N];
std::string shortPath = shortFilePath(filePath);
if (shortPath.size() > N / 2)
shortPath = shortPath.substr(0, N / 2);
std::snprintf(buffer, N, "[%s:%4i]", shortPath.c_str(), line);
return buffer;
}
} // namespace debug
} // namespace sourcetools
// Flip on/off as necessary
#define SOURCE_TOOLS_ENABLE_DEBUG_LOGGING
#ifdef SOURCE_TOOLS_ENABLE_DEBUG_LOGGING
#include <iostream>
#define DEBUG(__X__) \
std::cerr << ::sourcetools::debug::debugPosition(__FILE__, __LINE__) \
<< ": " << __X__ << ::std::endl;
#define DEBUG_BLOCK(x)
#else
#define DEBUG(x)
#define DEBUG_BLOCK(x) if (false)
#endif
#endif /* SOURCETOOLS_CORE_MACROS_H */
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