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| -rw-r--r-- | indent/scala.vim | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/indent/scala.vim b/indent/scala.vim new file mode 100644 index 0000000..c3e7c91 --- /dev/null +++ b/indent/scala.vim @@ -0,0 +1,85 @@ +" Vim indent file +" Language : Scala (http://scala-lang.org/) +" Maintainer : Stefan Matthias Aust +" Last Change: 2006 Apr 13 + +if exists("b:did_indent") + finish +endif +let b:did_indent = 1 + +setlocal indentexpr=GetScalaIndent() + +setlocal indentkeys=0{,0},0),!^F,<>>,<CR> + +setlocal autoindent shiftwidth=2 tabstop=2 softtabstop=2 expandtab + +if exists("*GetScalaIndent") + finish +endif + +function! CountParens(line) + let line = substitute(a:line, '"\(.\|\\"\)*"', '', 'g') + let open = substitute(line, '[^(]', '', 'g') + let close = substitute(line, '[^)]', '', 'g') + return strlen(open) - strlen(close) +endfunction + +function! GetScalaIndent() + " Find a non-blank line above the current line. + let lnum = prevnonblank(v:lnum - 1) + + " Hit the start of the file, use zero indent. + if lnum == 0 + return 0 + endif + + let ind = indent(lnum) + let prevline = getline(lnum) + + "Indent html literals + if prevline !~ '/>\s*$' && prevline =~ '^\s*<[a-zA-Z][^>]*>\s*$' + return ind + &shiftwidth + endif + + " Add a 'shiftwidth' after lines that start a block + " If if, for or while end with ), this is a one-line block + " If val, var, def end with =, this is a one-line block + if prevline =~ '^\s*\<\(\(else\s\+\)\?if\|for\|while\)\>.*[)]\s*$' + \ || prevline =~ '^\s*\<\(\(va[lr]\|def\)\>.*[=]\s*$' + \ || prevline =~ '^\s*\<else\>\s*$' + \ || prevline =~ '{\s*$' + let ind = ind + &shiftwidth + endif + + " If parenthesis are unbalanced, indent or dedent + let c = CountParens(prevline) + echo c + if c > 0 + let ind = ind + &shiftwidth + elseif c < 0 + let ind = ind - &shiftwidth + endif + + " Dedent after if, for, while and val, var, def without block + let pprevline = getline(prevnonblank(lnum - 1)) + if pprevline =~ '^\s*\<\(\(else\s\+\)\?if\|for\|while\)\>.*[)]\s*$' + \ || pprevline =~ '^\s*\<\(\va[lr]\|def\)\>.*[=]\s*$' + \ || pprevline =~ '^\s*\<else\>\s*$' + let ind = ind - &shiftwidth + endif + + " Align 'for' clauses nicely + if prevline =~ '^\s*\<for\> (.*;\s*$' + let ind = ind - &shiftwidth + 5 + endif + + " Subtract a 'shiftwidth' on '}' or html + let thisline = getline(v:lnum) + if thisline =~ '^\s*[})]' + \ || thisline =~ '^\s*</[a-zA-Z][^>]*>' + let ind = ind - &shiftwidth + endif + + return ind +endfunction |