" File: cpp.vim
" Language: C++
" Description: Additional C++ syntax file.
" Author: Kenneth Benzie (Benie) k.benzie83@gmail.com
" Last Modified: September 02, 2016

" Match delimiter expressions: <expr>, (expr) {expr} ex::pr
"                              ^    ^  ^    ^ ^    ^   ^^
syn match cppDelimiter '\([()\[\]{}<>]\|::\)'
" Match keyword logic operators
syn keyword cppOperator and and_eq bitand bitor compl
syn keyword cppOperator not not_eq or or_eq xor xor_eq
" Match single character operators, ordering within the [] is important
syn match cppOperator '[\*=\.\^\~+-,;&|!%]'
" Match single character operators if they are surrounded by white space: / < >
"                                                                         ^ ^ ^
syn match cppOperator '\(\s\zs\/\s\ze\|\s\zs<\s\ze\|\s\zs>\s\ze\)'
" Match multi character operators
syn match cppOperator '\(+=\|-=\|\*=\|/=\|%=\|\ˆ=\|&=\||=\|<<\|>>\|>>=\)'
syn match cppOperator '\(<<=\|==\|!=\|<=\|>=\|&&\|||\|++\|--\|->\*\|->\)'
" Match function expressions: foo()
"                             ^^^
syn match cppFunction '\w[A-Za-z0-9_]*\ze\s*('
" Match nested namespace expressions: expr::
"                                     ^^^^
syn match cppStorageClass '\w[A-Za-z0-9_]*\ze::'

" Define additional highlight groups
hi default link cppDelimiter Delimiter
hi default link cppFunction Function