This is a demo of how to use VIM as a lightweight IDE to run Scala scripts. We will create a script named "HelloWorld.scala" and run it under /home/godu/test for linux or e:\mydoc\scalafiles for windows.

Prerequisite

We can compile and run Scala scripts in console. This means we've already installed JRE and scala run-time files, and defined necessary enviroment variables such as JAVA_HOME and SCALA_HOME, and add $SCALA_HOME/bin to $PATH.

Create & Run Source Files

In Linux:

cd /home/godu/test 
vi HelloWorld.scala 
<INSERT>println("hello, world!")<ESC> 
:w HelloWorld.scala 
:!scala %

In Windows:

<Open gvim> 
:lcd e:\mydoc\scalafiles 
<INSERT>println("hello, world!")<ESC> 
:w HelloWorld.scala 
:!scala %

Add IDE functionality support

syntax hightlight, auto-indent, auto-complete, code insight, etc, see note "为VIM增加新的语法支持";

_vimrc settings for scala IDE

let Tlist_Ctags_Cmd="f:/Software/ctags58/ctags.exe" 
let tlist_scala_settings='scala;c:Classes;t:Traits;o:Objects;m:Methods;p:Packages;C:Constants;l:Local variables;T:Types' 
nnoremap <silent> <F4> :TlistToggle<CR>  
nnoremap <silent> <F9> :!scala %<CR> 
colo evening 
imap jj <ESC> 
cmap jj <ESC> 
set directory=C:\Windows\Temp 
set backupdir=C:\Windows\Temp 
set clipboard+=unnamed 
set guifont=Consolas:h13 
set guioptions= 
set ts=2 
cd e:/mydoc/scalafiles

For more information about the usage of filename-relative shortenings, use the following command for detail.

:h filename-modifiers

Frequently Used:

:!echo % // show file name and extension

:!echo %< // show only file name

:!echo %:t:r // show only file name

:!echo %:p // show full path

:!echo %:e // show only file extension