no_logging.h

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#ifndef RIME_NO_LOGGING_H_
#define RIME_NO_LOGGING_H_
 
namespace rime {
 
class VoidLogger {
 public:
  VoidLogger() {}
 
  // hack: an unnamed VoidLogger() cannot be used as an l-value
  VoidLogger& stream() { return *this; }
 
  template <class T>
  VoidLogger& operator<<(const T& x) {
    return *this;
  }
};
 
// to avoid compiler warnings
class Voidify {
 public:
  Voidify() {}
  void operator&(VoidLogger&) {}
};
 
}  // namespace rime
 
#define RIME_NO_LOG \
  true ? (void)0 : rime::Voidify() & rime::VoidLogger().stream()
 
#define LOG(severity) RIME_NO_LOG
#define VLOG(verboselevel) RIME_NO_LOG
#define LOG_IF(severity, condition) RIME_NO_LOG
#define LOG_EVERY_N(severity, n) RIME_NO_LOG
#define LOG_IF_EVERY_N(severity, condition, n) RIME_NO_LOG
#define LOG_ASSERT(condition) RIME_NO_LOG
 
#define RIME_NO_CHECK (void)0
 
#define CHECK(condition) RIME_NO_CHECK
#define CHECK_EQ(val1, val2) RIME_NO_CHECK
#define CHECK_NE(val1, val2) RIME_NO_CHECK
#define CHECK_LE(val1, val2) RIME_NO_CHECK
#define CHECK_LT(val1, val2) RIME_NO_CHECK
#define CHECK_GE(val1, val2) RIME_NO_CHECK
#define CHECK_GT(val1, val2) RIME_NO_CHECK
#define CHECK_NOTNULL(val) RIME_NO_CHECK
#define CHECK_STREQ(str1, str2) RIME_NO_CHECK
#define CHECK_STRCASEEQ(str1, str2) RIME_NO_CHECK
#define CHECK_STRNE(str1, str2) RIME_NO_CHECK
#define CHECK_STRCASENE(str1, str2) RIME_NO_CHECK
 
#define DLOG(severity) LOG(severity)
#define DVLOG(verboselevel) VLOG(verboselevel)
#define DLOG_IF(severity, condition) LOG_IF(severity, condition)
#define DLOG_EVERY_N(severity, n) LOG_EVERY_N(severity, n)
#define DLOG_IF_EVERY_N(severity, condition, n) \
  LOG_IF_EVERY_N(severity, condition, n)
#define DLOG_ASSERT(condition) LOG_ASSERT(condition)
 
#define DCHECK(condition) CHECK(condition)
#define DCHECK_EQ(val1, val2) CHECK_EQ(val1, val2)
#define DCHECK_NE(val1, val2) CHECK_NE(val1, val2)
#define DCHECK_LE(val1, val2) CHECK_LE(val1, val2)
#define DCHECK_LT(val1, val2) CHECK_LT(val1, val2)
#define DCHECK_GE(val1, val2) CHECK_GE(val1, val2)
#define DCHECK_GT(val1, val2) CHECK_GT(val1, val2)
#define DCHECK_NOTNULL(val) CHECK_NOTNULL(val)
#define DCHECK_STREQ(str1, str2) CHECK_STREQ(str1, str2)
#define DCHECK_STRCASEEQ(str1, str2) CHECK_STRCASEEQ(str1, str2)
#define DCHECK_STRNE(str1, str2) CHECK_STRNE(str1, str2)
#define DCHECK_STRCASENE(str1, str2) CHECK_STRCASENE(str1, str2)
 
#endif  // RIME_NO_LOGGING_H_