Make associative container out-of-range exception provide missing key

[folly.git] / folly / Format.cpp

diff --git a/folly/Format.cpp b/folly/Format.cpp
index 380cddbe418788ecdfabad7e686c820997661fa0..9ad5395e8f04f507c4496c9ed046a26622680148 100644 (file)
--- a/folly/Format.cpp
+++ b/folly/Format.cpp
@@ -356,4 +356,15 @@ void insertThousandsGroupingUnsafe(char* start_buffer, char** end_buffer) {
 }
 } // namespace detail
 
+FormatKeyNotFoundException::FormatKeyNotFoundException(StringPiece key)
+    : std::out_of_range(kMessagePrefix.str() + key.str()) {}
+
+constexpr StringPiece const FormatKeyNotFoundException::kMessagePrefix;
+
+namespace detail {
+[[noreturn]] void throwFormatKeyNotFoundException(StringPiece key) {
+  throw FormatKeyNotFoundException(key);
+}
+} // namespace detail
+
 } // namespace folly