" Vim indent file
" Language: Hamster Script
" Version: 2.0.6.0
" Last Change: Wed Nov 08 2006 12:02:42 PM
" Maintainer: David Fishburn <[email protected]>

" Only load this indent file when no other was loaded.
if exists("b:did_indent")
finish
endif
let b:did_indent = 1

setlocal indentkeys+==~if,=~else,=~endif,=~endfor,=~endwhile
setlocal indentkeys+==~do,=~until,=~while,=~repeat,=~for,=~loop
setlocal indentkeys+==~sub,=~endsub

" Define the appropriate indent function but only once
setlocal indentexpr=HamGetFreeIndent()
if exists("*HamGetFreeIndent")
finish
endif

function HamGetIndent(lnum)
let ind = indent(a:lnum)
let prevline=getline(a:lnum)

" Add a shiftwidth to statements following if, else, elseif,
" case, select, default, do, until, while, for, start
if prevline =~? '^\s*\<\(if\|else\%(if\)\?\|for\|repeat\|do\|while\|sub\)\>'
let ind = ind + &sw
endif

" Subtract a shiftwidth from else, elseif, end(if|while|for), until
let line = getline(v:lnum)
if line =~? '^\s*\(else\|elseif\|loop\|until\|end\%(if\|while\|for\|sub\)\)\>'
let ind = ind - &sw
endif

return ind
endfunction

function HamGetFreeIndent()
" Find the previous non-blank line
let lnum = prevnonblank(v:lnum - 1)

" Use zero indent at the top of the file
if lnum == 0
return 0
endif

let ind=HamGetIndent(lnum)
return ind
endfunction

" vim:sw=2 tw=80