clang-format actually only uses clang's lexer, it does its own parsing. It does this so that it can be applied to code snipits and so that you don't have to pro

clang-format actually only uses clang's lexer, it does its own parsing. It does this so that it can be applied to code snipits and so that you don't have to provide the full include paths and command line options required to correctly parse the file.