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-rw-r--r--vim/indent/scala.vim83
1 files changed, 83 insertions, 0 deletions
diff --git a/vim/indent/scala.vim b/vim/indent/scala.vim
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+" 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 sw=2 et
+
+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\|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\|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