Improve performance

[haya14busa]

No description provided.

[coveralls]

Coverage decreased (-0.02%) to 81.585% when pulling ce9df41 on performance into 91d84c9 on master.

[coveralls]

Coverage decreased (-0.02%) to 81.585% when pulling ce9df41 on performance into 91d84c9 on master.

[haya14busa]

# benchcmp mem.0 mem.8 (git)-[performance] benchmark old ns/op new ns/op delta BenchmarkVimLParser_VimLParser-4 522557385 239071919 -54.25% 

[coveralls]

Coverage increased (+0.03%) to 81.626% when pulling 71f910d on performance into 91d84c9 on master.

[coveralls]

Coverage increased (+0.03%) to 81.626% when pulling 71f910d on performance into 91d84c9 on master.

[coveralls]

Coverage increased (+0.03%) to 81.626% when pulling 1dc4167 on performance into 91d84c9 on master.

[coveralls]

Coverage increased (+0.03%) to 81.626% when pulling 1dc4167 on performance into 91d84c9 on master.

[haya14busa]

Benchmarks

$ pwd /home/haya14busa/src/github.com/ynkdir/vim-vimlparser $ git rev-parse HEAD 2fff43c58968a18bc01bc8304df68bde01af04d9 $ wc -l < autoload/vimlparser.vim 5195 $ time vim -u NONE -N --cmd "let &rtp .= ',' . getcwd()" --cmd "silent call vimlparser#test('autoload/vimlparser.vim')" -c ":q" vim -u NONE -N --cmd "let &rtp .= ',' . getcwd()" --cmd -c ":q" 48.88s user 0.05s system 99% cpu 48.942 total $ python3 -V Python 3.5.0 $ time python3 py/vimlparser.py autoload/vimlparser.vim > /dev/null python3 py/vimlparser.py autoload/vimlparser.vim > /dev/null 4.17s user 0.04s system 99% cpu 4.236 total $ pypy3 -V Python 3.2.5 (b2091e973da69152b3f928bfaabd5d2347e6df46, Mar 04 2016, 07:08:30) [PyPy 2.4.0 with GCC 5.3.0] $ time pypy3 py/vimlparser.py autoload/vimlparser.vim > /dev/null pypy3 py/vimlparser.py autoload/vimlparser.vim > /dev/null 2.63s user 0.06s system 99% cpu 2.694 total $ node --version v4.2.3 $ time node js/vimlparser.js autoload/vimlparser.vim > /dev/null node js/vimlparser.js autoload/vimlparser.vim > /dev/null 0.77s user 0.04s system 125% cpu 0.644 total $ go get github.com/haya14busa/go-vimlparser/cmd/vimlparser $ time vimlparser autoload/vimlparser.vim > /dev/null vimlparser autoload/vimlparser.vim > /dev/null 0.36s user 0.02s system 125% cpu 0.299 total

Language	Time (sec)
Vim script	48.88s
Python3 (3.5.0)	4.17s
pypy3	2.63s
node	0.77s
go	0.36s

Something Extra

$ pwd /home/haya14busa/src/github.com/haya14busa/go-vimlparser $ git rev-parse HEAD db7e1558c2c9a2a85b8b61bbfd2550f348b5677e $ time go run cmd/vimlparser/main.go ../../ynkdir/vim-vimlparser/autoload/vimlparser.vim > /dev/null go run cmd/vimlparser/main.go > /dev/null 0.54s user 0.08s system 124% cpu 0.491 total

Go is the fastest even with compile time.