vim-cpp-setup.md

Setting up VIM for C++ development

Using syntax highlighting

https://github.com/octol/vim-cpp-enhanced-highlight (see using-vim-packages.md for installation instructions)

Creating ctags for UE4

Currently using the following to generate 2 tags files from the UE4 Source

ctags -R --sort=yes --c++-kinds=+p --fields=+iaS --extra=+q --language-force=C++ -f ue4runtime "${UNREALENGINE_HOME}/Engine/Source/Runtime"
ctags -R --sort=yes --c++-kinds=+p --fields=+iaS --extra=+q --language-force=C++ -f ue4developer "${UNREALENGINE_HOME}/Engine/Source/Developer"

Setting up C++ code completion with ctags

• https://vim.fandom.com/wiki/C%2B%2B_code_completion

Added to .vimrc

" add C++ tags
set tags+=~/.vim/tags/cpp
set tags+=~/.vim/tags/ue4runtime
set tags+=~/.vim/tags/ue4dev

" OmniCppComplete
let OmniCpp_NamespaceSearch = 1
let OmniCpp_GlobalScopeSearch = 1
let OmniCpp_ShowAccess = 1
let OmniCpp_ShowPrototypeInAbbr = 1 " show function parameters
let OmniCpp_MayCompleteDot = 1 " autocomplete after .
let OmniCpp_MayCompleteArrow = 1 " autocomplete after ->
let OmniCpp_MayCompleteScope = 1 " autocomplete after ::
let OmniCpp_DefaultNamespaces = ["std", "_GLIBCXX_STD"]
" automatically open and close the popup menu / preview window
au CursorMovedI,InsertLeave * if pumvisible() == 0|silent! pclose|endif
set completeopt=menuone,menu,longest,preview

using ctags in vim

• use :help tags for help
• use ctrl-] to jump to first explanaition of a tag
• use :ts to list all matches
  • and then input the number
  • or just to :ts <number>
• use :tags to show the tag stack when jumping through multiple tags
• finally use ctrl-t twice to return to the main

What happens when compiling C++

Tool: Godbolt.org

Is a useful online tool to see what happens when C++ code is compiled https://godbolt.org/

CppCon 2017: Matt Godbolt “What Has My Compiler Done for Me Lately? Unbolting the Compiler's Lid” https://www.youtube.com/watch?v=bSkpMdDe4g4