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-rw-r--r--runtime/indent/sdl.vim89
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+" Vim indent file
+" Language: SDL
+" Maintainer: Michael Piefel <piefel@informatik.hu-berlin.de>
+" Last Change: 2001 Sep 17
+
+" Shamelessly stolen from the Vim-Script indent file
+
+" Only load this indent file when no other was loaded.
+if exists("b:did_indent")
+ finish
+endif
+let b:did_indent = 1
+
+setlocal indentexpr=GetSDLIndent()
+setlocal indentkeys+==~end,=~state,*<Return>
+
+" Only define the function once.
+if exists("*GetSDLIndent")
+" finish
+endif
+
+set cpo-=C
+
+function! GetSDLIndent()
+ " Find a non-blank line above the current line.
+ let lnum = prevnonblank(v:lnum - 1)
+
+ " At the start of the file use zero indent.
+ if lnum == 0
+ return 0
+ endif
+
+ let ind = indent(lnum)
+ let virtuality = '^\s*\(\(virtual\|redefined\|finalized\)\s\+\)\=\s*'
+
+ " Add a single space to comments which use asterisks
+ if getline(lnum) =~ '^\s*\*'
+ let ind = ind - 1
+ endif
+ if getline(v:lnum) =~ '^\s*\*'
+ let ind = ind + 1
+ endif
+
+ " Add a 'shiftwidth' after states, different blocks, decision (and alternatives), inputs
+ if (getline(lnum) =~? '^\s*\(start\|state\|system\|package\|connection\|channel\|alternative\|macro\|operator\|newtype\|select\|substructure\|decision\|generator\|refinement\|service\|method\|exceptionhandler\|asntype\|syntype\|value\|(.*):\|\(priority\s\+\)\=input\|provided\)'
+ \ || getline(lnum) =~? virtuality . '\(process\|procedure\|block\|object\)')
+ \ && getline(lnum) !~? 'end[[:alpha:]]\+;$'
+ let ind = ind + &sw
+ endif
+
+ " Subtract a 'shiftwidth' after states
+ if getline(lnum) =~? '^\s*\(stop\|return\>\|nextstate\)'
+ let ind = ind - &sw
+ endif
+
+ " Subtract a 'shiftwidth' on on end (uncompleted line)
+ if getline(v:lnum) =~? '^\s*end\>'
+ let ind = ind - &sw
+ endif
+
+ " Put each alternatives where the corresponding decision was
+ if getline(v:lnum) =~? '^\s*\((.*)\|else\):'
+ normal k
+ let ind = indent(searchpair('^\s*decision', '', '^\s*enddecision', 'bW',
+ \ 'synIDattr(synID(line("."), col("."), 0), "name") =~? "sdlString"'))
+ endif
+
+ " Put each state where the preceding state was
+ if getline(v:lnum) =~? '^\s*state\>'
+ let ind = indent(search('^\s*start', 'bW'))
+ endif
+
+ " Systems and packages are always in column 0
+ if getline(v:lnum) =~? '^\s*\(\(end\)\=system\|\(end\)\=package\)'
+ return 0;
+ endif
+
+ " Put each end* where the corresponding begin was
+ if getline(v:lnum) =~? '^\s*end[[:alpha:]]'
+ normal k
+ let partner=matchstr(getline(v:lnum), '\(' . virtuality . 'end\)\@<=[[:alpha:]]\+')
+ let ind = indent(searchpair(virtuality . partner, '', '^\s*end' . partner, 'bW',
+ \ 'synIDattr(synID(line("."), col("."), 0), "name") =~? "sdlString"'))
+ endif
+
+ return ind
+endfunction
+
+" vim:sw=2