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//usr/share/vim/vim74/indent/clojure.vim
" Vim indent file " Language: Clojure " Author: Meikel Brandmeyer <mb@kotka.de> " URL: http://kotka.de/projects/clojure/vimclojure.html " " Maintainer: Sung Pae <self@sungpae.com> " URL: https://github.com/guns/vim-clojure-static " License: Same as Vim " Last Change: 30 January 2013 " Only load this indent file when no other was loaded. if exists("b:did_indent") finish endif let b:did_indent = 1 let s:save_cpo = &cpo set cpo&vim let b:undo_indent = 'setlocal autoindent< smartindent< lispwords< expandtab< softtabstop< shiftwidth< indentexpr< indentkeys<' setlocal noautoindent nosmartindent setlocal softtabstop=2 shiftwidth=2 expandtab setlocal indentkeys=!,o,O if exists("*searchpairpos") if !exists('g:clojure_maxlines') let g:clojure_maxlines = 100 endif if !exists('g:clojure_fuzzy_indent') let g:clojure_fuzzy_indent = 1 endif if !exists('g:clojure_fuzzy_indent_patterns') let g:clojure_fuzzy_indent_patterns = ['^with', '^def', '^let'] endif if !exists('g:clojure_fuzzy_indent_blacklist') let g:clojure_fuzzy_indent_blacklist = ['-fn$', '\v^with-%(meta|out-str|loading-context)$'] endif if !exists('g:clojure_special_indent_words') let g:clojure_special_indent_words = 'deftype,defrecord,reify,proxy,extend-type,extend-protocol,letfn' endif if !exists('g:clojure_align_multiline_strings') let g:clojure_align_multiline_strings = 0 endif function! s:SynIdName() return synIDattr(synID(line("."), col("."), 0), "name") endfunction function! s:CurrentChar() return getline('.')[col('.')-1] endfunction function! s:CurrentWord() return getline('.')[col('.')-1 : searchpos('\v>', 'n', line('.'))[1]-2] endfunction function! s:IsParen() return s:CurrentChar() =~ '\v[\(\)\[\]\{\}]' && \ s:SynIdName() !~? '\vstring|comment' endfunction " Returns 1 if string matches a pattern in 'patterns', which may be a " list of patterns, or a comma-delimited string of implicitly anchored " patterns. function! s:MatchesOne(patterns, string) let list = type(a:patterns) == type([]) \ ? a:patterns \ : map(split(a:patterns, ','), '"^" . v:val . "$"') for pat in list if a:string =~ pat | return 1 | endif endfor endfunction function! s:SavePosition() let [ _b, l, c, _o ] = getpos(".") let b = bufnr("%") return [b, l, c] endfunction function! s:RestorePosition(value) let [b, l, c] = a:value if bufnr("%") != b execute b "buffer!" endif call setpos(".", [0, l, c, 0]) endfunction function! s:MatchPairs(open, close, stopat) " Stop only on vector and map [ resp. {. Ignore the ones in strings and " comments. if a:stopat == 0 let stopat = max([line(".") - g:clojure_maxlines, 0]) else let stopat = a:stopat endif let pos = searchpairpos(a:open, '', a:close, 'bWn', "!s:IsParen()", stopat) return [pos[0], virtcol(pos)] endfunction function! s:ClojureCheckForStringWorker() " Check whether there is the last character of the previous line is " highlighted as a string. If so, we check whether it's a ". In this " case we have to check also the previous character. The " might be the " closing one. In case the we are still in the string, we search for the " opening ". If this is not found we take the indent of the line. let nb = prevnonblank(v:lnum - 1) if nb == 0 return -1 endif call cursor(nb, 0) call cursor(0, col("$") - 1) if s:SynIdName() !~? "string" return -1 endif " This will not work for a " in the first column... if s:CurrentChar() == '"' call cursor(0, col("$") - 2) if s:SynIdName() !~? "string" return -1 endif if s:CurrentChar() != '\\' return -1 endif call cursor(0, col("$") - 1) endif let p = searchpos('\(^\|[^\\]\)\zs"', 'bW') if p != [0, 0] return p[1] - 1 endif return indent(".") endfunction function! s:CheckForString() let pos = s:SavePosition() try let val = s:ClojureCheckForStringWorker() finally call s:RestorePosition(pos) endtry return val endfunction function! s:ClojureIsMethodSpecialCaseWorker(position) " Find the next enclosing form. call search('\S', 'Wb') " Special case: we are at a '(('. if s:CurrentChar() == '(' return 0 endif call cursor(a:position) let nextParen = s:MatchPairs('(', ')', 0) " Special case: we are now at toplevel. if nextParen == [0, 0] return 0 endif call cursor(nextParen) call search('\S', 'W') if g:clojure_special_indent_words =~ '\<' . s:CurrentWord() . '\>' return 1 endif return 0 endfunction function! s:IsMethodSpecialCase(position) let pos = s:SavePosition() try let val = s:ClojureIsMethodSpecialCaseWorker(a:position) finally call s:RestorePosition(pos) endtry return val endfunction function! GetClojureIndent() " Get rid of special case. if line(".") == 1 return 0 endif " We have to apply some heuristics here to figure out, whether to use " normal lisp indenting or not. let i = s:CheckForString() if i > -1 return i + !!g:clojure_align_multiline_strings endif call cursor(0, 1) " Find the next enclosing [ or {. We can limit the second search " to the line, where the [ was found. If no [ was there this is " zero and we search for an enclosing {. let paren = s:MatchPairs('(', ')', 0) let bracket = s:MatchPairs('\[', '\]', paren[0]) let curly = s:MatchPairs('{', '}', bracket[0]) " In case the curly brace is on a line later then the [ or - in " case they are on the same line - in a higher column, we take the " curly indent. if curly[0] > bracket[0] || curly[1] > bracket[1] if curly[0] > paren[0] || curly[1] > paren[1] return curly[1] endif endif " If the curly was not chosen, we take the bracket indent - if " there was one. if bracket[0] > paren[0] || bracket[1] > paren[1] return bracket[1] endif " There are neither { nor [ nor (, ie. we are at the toplevel. if paren == [0, 0] return 0 endif " Now we have to reimplement lispindent. This is surprisingly easy, as " soon as one has access to syntax items. " " - Check whether we are in a special position after a word in " g:clojure_special_indent_words. These are special cases. " - Get the next keyword after the (. " - If its first character is also a (, we have another sexp and align " one column to the right of the unmatched (. " - In case it is in lispwords, we indent the next line to the column of " the ( + sw. " - If not, we check whether it is last word in the line. In that case " we again use ( + sw for indent. " - In any other case we use the column of the end of the word + 2. call cursor(paren) if s:IsMethodSpecialCase(paren) return paren[1] + &shiftwidth - 1 endif " In case we are at the last character, we use the paren position. if col("$") - 1 == paren[1] return paren[1] endif " In case after the paren is a whitespace, we search for the next word. normal! l if s:CurrentChar() == ' ' normal! w endif " If we moved to another line, there is no word after the (. We " use the ( position for indent. if line(".") > paren[0] return paren[1] endif " We still have to check, whether the keyword starts with a (, [ or {. " In that case we use the ( position for indent. let w = s:CurrentWord() if stridx('([{', w[0]) > -1 return paren[1] endif " Test words without namespace qualifiers and leading reader macro " metacharacters. " " e.g. clojure.core/defn and #'defn should both indent like defn. let ww = substitute(w, "\\v%(.*/|[#'`~@^,]*)(.*)", '\1', '') if &lispwords =~ '\V\<' . ww . '\>' return paren[1] + &shiftwidth - 1 endif if g:clojure_fuzzy_indent \ && !s:MatchesOne(g:clojure_fuzzy_indent_blacklist, ww) \ && s:MatchesOne(g:clojure_fuzzy_indent_patterns, ww) return paren[1] + &shiftwidth - 1 endif normal! W if paren[0] < line(".") return paren[1] + &shiftwidth - 1 endif normal! ge return virtcol(".") + 1 endfunction setlocal indentexpr=GetClojureIndent() else " In case we have searchpairpos not available we fall back to " normal lisp indenting. setlocal indentexpr= setlocal lisp let b:undo_indent .= '| setlocal lisp<' endif " Specially indented symbols from clojure.core and clojure.test. " " Clojure symbols are indented in the defn style when they: " " * Define vars and anonymous functions " * Create new lexical scopes or scopes with altered environments " * Create conditional branches from a predicate function or value " " The arglists for these functions are generally in the form of [x & body]; " Functions that accept a flat list of forms do not treat the first argument " specially and hence are not indented specially. " Definitions setlocal lispwords= setlocal lispwords+=bound-fn setlocal lispwords+=def setlocal lispwords+=definline setlocal lispwords+=definterface setlocal lispwords+=defmacro setlocal lispwords+=defmethod setlocal lispwords+=defmulti setlocal lispwords+=defn setlocal lispwords+=defn- setlocal lispwords+=defonce setlocal lispwords+=defprotocol setlocal lispwords+=defrecord setlocal lispwords+=defstruct setlocal lispwords+=deftest " clojure.test setlocal lispwords+=deftest- " clojure.test setlocal lispwords+=deftype setlocal lispwords+=extend setlocal lispwords+=extend-protocol setlocal lispwords+=extend-type setlocal lispwords+=fn setlocal lispwords+=ns setlocal lispwords+=proxy setlocal lispwords+=reify setlocal lispwords+=set-test " clojure.test " Binding forms setlocal lispwords+=as-> setlocal lispwords+=binding setlocal lispwords+=doall setlocal lispwords+=dorun setlocal lispwords+=doseq setlocal lispwords+=dotimes setlocal lispwords+=doto setlocal lispwords+=for setlocal lispwords+=if-let setlocal lispwords+=let setlocal lispwords+=letfn setlocal lispwords+=locking setlocal lispwords+=loop setlocal lispwords+=testing " clojure.test setlocal lispwords+=when-first setlocal lispwords+=when-let setlocal lispwords+=with-bindings setlocal lispwords+=with-in-str setlocal lispwords+=with-local-vars setlocal lispwords+=with-open setlocal lispwords+=with-precision setlocal lispwords+=with-redefs setlocal lispwords+=with-redefs-fn setlocal lispwords+=with-test " clojure.test " Conditional branching setlocal lispwords+=case setlocal lispwords+=cond-> setlocal lispwords+=cond->> setlocal lispwords+=condp setlocal lispwords+=if setlocal lispwords+=if-not setlocal lispwords+=when setlocal lispwords+=when-not setlocal lispwords+=while " Exception handling setlocal lispwords+=catch setlocal lispwords+=try " For aesthetics when enclosing single line let &cpo = s:save_cpo unlet! s:save_cpo " vim:sts=4 sw=4 et:
