Btw., I was describing basically two tools: 1. Some replacement for grep to search through the code. Where you can search for "std::string::size()" or sth like

Btw., I was describing basically two tools: 1. Some replacement for grep to search through the code. Where you can search for "std::string::size()" or sth like this and it will show you exactly all calls to that function. This tool is really trivial to implement. (Probably someone has done that already.) 2. Some tool which adds some metadata to a code snippet. Which would just add exactly those information of the context which is needed to understand the snippet. I.e. this fully depends on your code. If it is bad code with full of macros, many operator overloadings and other tricks, there will be a lot of context around, otherwise, not.