#ifndef CPP_HTMLPARSER_GLOG_POLYFILL_H_

#define CPP_HTMLPARSER_GLOG_POLYFILL_H_

#include <cstdlib>

class Checker {

 public:

  Checker(bool condition) : condition_(condition) {}

  ~Checker() {

    if (!condition_) {

      abort();

    }

  }

  template <typename T>

  Checker& operator<<(T s) {

    return *this;

  }

 private:

  bool condition_;

};

// Using the same value as `absl::LogSeverity`

const int INFO = 0;

const int WARNING = 1;

const int ERROR = 2;

const int FATAL = 3;

#define CHECK(condition) Checker(condition)

#define CHECK_EQ(val1, val2) Checker((val1) == (val2))

#define CHECK_GE(val1, val2) Checker((val1) >= (val2))

#define CHECK_LT(val1, val2) Checker((val1) < (val2))

#define CHECK_NE(val1, val2) Checker((val1) != (val2))

#define LOG(level) Checker((level) < FATAL)

#define DCHECK(condition) Checker(true)

#define DCHECK_EQ(val1, val2) Checker(true)

#define DCHECK_GE(val1, val2) Checker(true)

#define DLOG(level) Checker(true)

#endif  // CPP_HTMLPARSER_GLOG_POLYFILL_H_