absl Namespace Reference

Classes
class	SourceLocation

Detailed Description

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. API for capturing source-code location information. Based on http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/n4519.pdf.

To define a function that has access to the source location of the callsite, define it with a parameter of type absl::SourceLocation. The caller can then invoke the function, passing ABSL_LOC as the argument.

If at all possible, make the absl::SourceLocation parameter be the function's last parameter. That way, when std::source_location is available, you will be able to switch to it, and give the parameter a default argument of std::source_location::current(). Users will then be able to omit that argument, and the default will automatically capture the location of the callsite.