Vanrb Lightning Talk Slides: Ruby and Vim

http://www.meetup.com/vancouver-ruby-rails/events/21277581/

structure

RSense

A Ruby development toolset

• Code completion
• Type inspection
• Definition jump

RSense code completion

a.rb

a = '123'
b = a.to_i
b.

rsense command

$ rsense code-completion --file=a.rb --location=3:2
completion: to_enum Object#to_enum Object METHOD
completion: succ! String#succ! String METHOD
completion: swapcase! String#swapcase! String METHOD
completion: instance_variable_defined? Object#instance_variable_defined? Object METHOD
...

Implementation

• Front-end command bin/rsense
• Back-end server process with Java&JRuby
• Type-inference algorithm "modified-Cartesian Product Algorithm"

limitations

• classes in the buffer
• 1.8 built-in libraries
• incorrect syntax
• evals and exceptions

Vim

Vim

Vim and me

• fullscreen MacVim
• vimshell (no other terminals)
• neocomplcache
• unite
• quickrun

RSense built-in Vim plugin

User-defined completion <C-x><C-u>

a = '123'
b = a.to_i
b._

Insert-mode completions in general

• <C-n> Keyword
• <C-x><C-f> File name
• <C-x><C-s> English spelling
• <C-x><C-o> Omni
• <C-x><C-u> User-defined

neocomplcache

Insert-mode auto-completion plugin framework

• No key mapping necessary
• Integrates lots of completions

RSense as omni func

~/.vimrc

let g:rsenseUseOmniFunc = 1
let g:rsenseHome = expand('~/git/rsense')

let g:neocomplcache_omni_patterns = {}
let g:neocomplcache_omni_patterns.ruby = '[^. *\t]\.\w*\|\h\w*::'

one more thing

• neco-: prefix for neocomplcache plugins
• neco-rake: rake task completion

structure

• http://ujihisa.blogspot.com
• http://twitter.com/ujm
• google rsense
• google neocomplcache if you are a Vimmer