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104 lines
2.7 KiB
VimL
104 lines
2.7 KiB
VimL
" Vim indent file
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" Language : Scala (http://scala-lang.org/)
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" Maintainer : Stefan Matthias Aust
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" Last Change: 2006 Apr 13
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if exists("b:did_indent")
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finish
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endif
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let b:did_indent = 1
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setlocal indentexpr=GetScalaIndent()
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setlocal indentkeys=0{,0},0),!^F,<>>,o,O
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setlocal autoindent shiftwidth=2 tabstop=2 softtabstop=2 expandtab
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if exists("*GetScalaIndent")
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finish
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endif
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function! CountParens(line)
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let line = substitute(a:line, '"\(.\|\\"\)*"', '', 'g')
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let open = substitute(line, '[^(]', '', 'g')
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let close = substitute(line, '[^)]', '', 'g')
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return strlen(open) - strlen(close)
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endfunction
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function! GetScalaIndent()
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" Find a non-blank line above the current line.
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let lnum = prevnonblank(v:lnum - 1)
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" Hit the start of the file, use zero indent.
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if lnum == 0
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return 0
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endif
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let ind = indent(lnum)
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let prevline = getline(lnum)
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"Indent html literals
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if prevline !~ '/>\s*$' && prevline =~ '^\s*<[a-zA-Z][^>]*>\s*$'
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return ind + &shiftwidth
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endif
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" Add a 'shiftwidth' after lines that start a block
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" If if, for or while end with ), this is a one-line block
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" If val, var, def end with =, this is a one-line block
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if prevline =~ '^\s*\<\(\(else\s\+\)\?if\|for\|while\)\>.*[)]\s*$'
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\ || prevline =~ '^\s*\<\(\(va[lr]\|def\)\>.*[=]\s*$'
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\ || prevline =~ '^\s*\<else\>\s*$'
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\ || prevline =~ '{\s*$'
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let ind = ind + &shiftwidth
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endif
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" If parenthesis are unbalanced, indent or dedent
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let c = CountParens(prevline)
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echo c
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if c > 0
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let ind = ind + &shiftwidth
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elseif c < 0
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let ind = ind - &shiftwidth
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endif
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" Dedent after if, for, while and val, var, def without block
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let pprevline = getline(prevnonblank(lnum - 1))
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if pprevline =~ '^\s*\<\(\(else\s\+\)\?if\|for\|while\)\>.*[)]\s*$'
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\ || pprevline =~ '^\s*\<\(\va[lr]\|def\)\>.*[=]\s*$'
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\ || pprevline =~ '^\s*\<else\>\s*$'
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let ind = ind - &shiftwidth
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endif
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" Align 'for' clauses nicely
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if prevline =~ '^\s*\<for\> (.*;\s*$'
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let ind = ind - &shiftwidth + 5
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endif
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" Subtract a 'shiftwidth' on '}' or html
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let thisline = getline(v:lnum)
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if thisline =~ '^\s*[})]'
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\ || thisline =~ '^\s*</[a-zA-Z][^>]*>'
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let ind = ind - &shiftwidth
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endif
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" Indent multi-lines comments
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if prevline =~ '^\s*\/\*\($\|[^*]\(\(\*\/\)\@!.\)*$\)'
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let ind = ind + 1
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endif
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" Indent multi-lines ScalaDoc
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if prevline =~ '^\s*\/\*\*\($\|[^*]\(\(\*\/\)\@!.\)*$\)'
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let ind = ind + 2
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endif
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" Dedent after multi-lines comments & ScalaDoc
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if prevline =~ '^\s*\(\(\/\*\)\@!.\)*\*\/.*$'
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" Dedent 1
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let ind = ind - 1
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" Align to any multiple of 'shiftwidth'
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let ind = ind - (ind % &shiftwidth)
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endif
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return ind
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endfunction
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