/*
- * Copyright 2014 Facebook, Inc.
+ * Copyright 2015 Facebook, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
#include <stdexcept>
#include <system_error>
-#include "folly/Conv.h"
-#include "folly/FBString.h"
-#include "folly/Likely.h"
-#include "folly/Portability.h"
+#include <folly/Conv.h>
+#include <folly/FBString.h>
+#include <folly/Likely.h>
+#include <folly/Portability.h>
namespace folly {
// The *Explicit functions take an explicit value for errno.
// Helper to throw std::system_error
-void throwSystemErrorExplicit(int err, const char*) FOLLY_NORETURN;
+FOLLY_NORETURN void throwSystemErrorExplicit(int err, const char*);
inline void throwSystemErrorExplicit(int err, const char* msg) {
throw std::system_error(err, std::system_category(), msg);
}
template <class... Args>
-void throwSystemErrorExplicit(int, Args&&... args) FOLLY_NORETURN;
+FOLLY_NORETURN void throwSystemErrorExplicit(int, Args&&... args);
template <class... Args>
void throwSystemErrorExplicit(int err, Args&&... args) {
throwSystemErrorExplicit(
// Helper to throw std::system_error from errno and components of a string
template <class... Args>
-void throwSystemError(Args&&... args) FOLLY_NORETURN;
+FOLLY_NORETURN void throwSystemError(Args&&... args);
template <class... Args>
void throwSystemError(Args&&... args) {
throwSystemErrorExplicit(errno, std::forward<Args>(args)...);
}
}
+template <typename E, typename V, typename... Args>
+void throwOnFail(V&& value, Args&&... args) {
+ if (!value) {
+ throw E(std::forward<Args>(args)...);
+ }
+}
+
+/**
+ * If cond is not true, raise an exception of type E. E must have a ctor that
+ * works with const char* (a description of the failure).
+ */
+#define CHECK_THROW(cond, E) \
+ ::folly::throwOnFail<E>((cond), "Check failed: " #cond)
+
} // namespace folly
#endif /* FOLLY_EXCEPTION_H_ */
-