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Diffstat (limited to 'indent/falcon.vim')
| -rw-r--r-- | indent/falcon.vim | 455 |
1 files changed, 0 insertions, 455 deletions
diff --git a/indent/falcon.vim b/indent/falcon.vim deleted file mode 100644 index 4d17d33d..00000000 --- a/indent/falcon.vim +++ /dev/null @@ -1,455 +0,0 @@ -if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'vim') == -1 - -" Vim indent file -" Language: Falcon -" Maintainer: Steven Oliver <oliver.steven@gmail.com> -" Website: https://steveno@github.com/steveno/falconpl-vim.git -" Credits: This is, to a great extent, a copy n' paste of ruby.vim. - -" 1. Setup {{{1 -" ============ - -" Only load this indent file when no other was loaded. -if exists("b:did_indent") - finish -endif -let b:did_indent = 1 - -setlocal nosmartindent - -" Setup indent function and when to use it -setlocal indentexpr=FalconGetIndent(v:lnum) -setlocal indentkeys=0{,0},0),0],!^F,o,O,e -setlocal indentkeys+==~case,=~catch,=~default,=~elif,=~else,=~end,=~\" - -" Define the appropriate indent function but only once -if exists("*FalconGetIndent") - finish -endif - -let s:cpo_save = &cpo -set cpo&vim - -" 2. Variables {{{1 -" ============ - -" Regex of syntax group names that are strings AND comments -let s:syng_strcom = '\<falcon\%(String\|StringEscape\|Comment\)\>' - -" Regex of syntax group names that are strings -let s:syng_string = '\<falcon\%(String\|StringEscape\)\>' - -" Regex that defines blocks. -" -" Note that there's a slight problem with this regex and s:continuation_regex. -" Code like this will be matched by both: -" -" method_call do |(a, b)| -" -" The reason is that the pipe matches a hanging "|" operator. -" -let s:block_regex = - \ '\%(\<do:\@!\>\|%\@<!{\)\s*\%(|\s*(*\s*\%([*@&]\=\h\w*,\=\s*\)\%(,\s*(*\s*[*@&]\=\h\w*\s*)*\s*\)*|\)\=\s*\%(#.*\)\=$' - -let s:block_continuation_regex = '^\s*[^])}\t ].*'.s:block_regex - -" Regex that defines continuation lines. -" TODO: this needs to deal with if ...: and so on -let s:continuation_regex = - \ '\%(%\@<![({[\\.,:*/%+]\|\<and\|\<or\|\%(<%\)\@<![=-]\|\W[|&?]\|||\|&&\)\s*\%(#.*\)\=$' - -" Regex that defines bracket continuations -let s:bracket_continuation_regex = '%\@<!\%([({[]\)\s*\%(#.*\)\=$' - -" Regex that defines continuation lines, not including (, {, or [. -let s:non_bracket_continuation_regex = '\%([\\.,:*/%+]\|\<and\|\<or\|\%(<%\)\@<![=-]\|\W[|&?]\|||\|&&\)\s*\%(#.*\)\=$' - -" Keywords to indent on -let s:falcon_indent_keywords = '^\s*\(case\|catch\|class\|enum\|default\|elif\|else' . - \ '\|for\|function\|if.*"[^"]*:.*"\|if \(\(:\)\@!.\)*$\|loop\|object\|select' . - \ '\|switch\|try\|while\|\w*\s*=\s*\w*([$\)' - -" Keywords to deindent on -let s:falcon_deindent_keywords = '^\s*\(case\|catch\|default\|elif\|else\|end\)' - -" 3. Functions {{{1 -" ============ - -" Check if the character at lnum:col is inside a string, comment, or is ascii. -function s:IsInStringOrComment(lnum, col) - return synIDattr(synID(a:lnum, a:col, 1), 'name') =~ s:syng_strcom -endfunction - -" Check if the character at lnum:col is inside a string. -function s:IsInString(lnum, col) - return synIDattr(synID(a:lnum, a:col, 1), 'name') =~ s:syng_string -endfunction - -" Check if the character at lnum:col is inside a string delimiter -function s:IsInStringDelimiter(lnum, col) - return synIDattr(synID(a:lnum, a:col, 1), 'name') == 'falconStringDelimiter' -endfunction - -" Find line above 'lnum' that isn't empty, in a comment, or in a string. -function s:PrevNonBlankNonString(lnum) - let in_block = 0 - let lnum = prevnonblank(a:lnum) - while lnum > 0 - " Go in and out of blocks comments as necessary. - " If the line isn't empty (with opt. comment) or in a string, end search. - let line = getline(lnum) - if line =~ '^=begin' - if in_block - let in_block = 0 - else - break - endif - elseif !in_block && line =~ '^=end' - let in_block = 1 - elseif !in_block && line !~ '^\s*#.*$' && !(s:IsInStringOrComment(lnum, 1) - \ && s:IsInStringOrComment(lnum, strlen(line))) - break - endif - let lnum = prevnonblank(lnum - 1) - endwhile - return lnum -endfunction - -" Find line above 'lnum' that started the continuation 'lnum' may be part of. -function s:GetMSL(lnum) - " Start on the line we're at and use its indent. - let msl = a:lnum - let msl_body = getline(msl) - let lnum = s:PrevNonBlankNonString(a:lnum - 1) - while lnum > 0 - " If we have a continuation line, or we're in a string, use line as MSL. - " Otherwise, terminate search as we have found our MSL already. - let line = getline(lnum) - - if s:Match(line, s:non_bracket_continuation_regex) && - \ s:Match(msl, s:non_bracket_continuation_regex) - " If the current line is a non-bracket continuation and so is the - " previous one, keep its indent and continue looking for an MSL. - " - " Example: - " method_call one, - " two, - " three - " - let msl = lnum - elseif s:Match(lnum, s:non_bracket_continuation_regex) && - \ (s:Match(msl, s:bracket_continuation_regex) || s:Match(msl, s:block_continuation_regex)) - " If the current line is a bracket continuation or a block-starter, but - " the previous is a non-bracket one, respect the previous' indentation, - " and stop here. - " - " Example: - " method_call one, - " two { - " three - " - return lnum - elseif s:Match(lnum, s:bracket_continuation_regex) && - \ (s:Match(msl, s:bracket_continuation_regex) || s:Match(msl, s:block_continuation_regex)) - " If both lines are bracket continuations (the current may also be a - " block-starter), use the current one's and stop here - " - " Example: - " method_call( - " other_method_call( - " foo - return msl - elseif s:Match(lnum, s:block_regex) && - \ !s:Match(msl, s:continuation_regex) && - \ !s:Match(msl, s:block_continuation_regex) - " If the previous line is a block-starter and the current one is - " mostly ordinary, use the current one as the MSL. - " - " Example: - " method_call do - " something - " something_else - return msl - else - let col = match(line, s:continuation_regex) + 1 - if (col > 0 && !s:IsInStringOrComment(lnum, col)) - \ || s:IsInString(lnum, strlen(line)) - let msl = lnum - else - break - endif - endif - - let msl_body = getline(msl) - let lnum = s:PrevNonBlankNonString(lnum - 1) - endwhile - return msl -endfunction - -" Check if line 'lnum' has more opening brackets than closing ones. -function s:ExtraBrackets(lnum) - let opening = {'parentheses': [], 'braces': [], 'brackets': []} - let closing = {'parentheses': [], 'braces': [], 'brackets': []} - - let line = getline(a:lnum) - let pos = match(line, '[][(){}]', 0) - - " Save any encountered opening brackets, and remove them once a matching - " closing one has been found. If a closing bracket shows up that doesn't - " close anything, save it for later. - while pos != -1 - if !s:IsInStringOrComment(a:lnum, pos + 1) - if line[pos] == '(' - call add(opening.parentheses, {'type': '(', 'pos': pos}) - elseif line[pos] == ')' - if empty(opening.parentheses) - call add(closing.parentheses, {'type': ')', 'pos': pos}) - else - let opening.parentheses = opening.parentheses[0:-2] - endif - elseif line[pos] == '{' - call add(opening.braces, {'type': '{', 'pos': pos}) - elseif line[pos] == '}' - if empty(opening.braces) - call add(closing.braces, {'type': '}', 'pos': pos}) - else - let opening.braces = opening.braces[0:-2] - endif - elseif line[pos] == '[' - call add(opening.brackets, {'type': '[', 'pos': pos}) - elseif line[pos] == ']' - if empty(opening.brackets) - call add(closing.brackets, {'type': ']', 'pos': pos}) - else - let opening.brackets = opening.brackets[0:-2] - endif - endif - endif - - let pos = match(line, '[][(){}]', pos + 1) - endwhile - - " Find the rightmost brackets, since they're the ones that are important in - " both opening and closing cases - let rightmost_opening = {'type': '(', 'pos': -1} - let rightmost_closing = {'type': ')', 'pos': -1} - - for opening in opening.parentheses + opening.braces + opening.brackets - if opening.pos > rightmost_opening.pos - let rightmost_opening = opening - endif - endfor - - for closing in closing.parentheses + closing.braces + closing.brackets - if closing.pos > rightmost_closing.pos - let rightmost_closing = closing - endif - endfor - - return [rightmost_opening, rightmost_closing] -endfunction - -function s:Match(lnum, regex) - let col = match(getline(a:lnum), '\C'.a:regex) + 1 - return col > 0 && !s:IsInStringOrComment(a:lnum, col) ? col : 0 -endfunction - -function s:MatchLast(lnum, regex) - let line = getline(a:lnum) - let col = match(line, '.*\zs' . a:regex) - while col != -1 && s:IsInStringOrComment(a:lnum, col) - let line = strpart(line, 0, col) - let col = match(line, '.*' . a:regex) - endwhile - return col + 1 -endfunction - -" 4. FalconGetIndent Routine {{{1 -" ============ - -function FalconGetIndent(...) - " For the current line, use the first argument if given, else v:lnum - let clnum = a:0 ? a:1 : v:lnum - - " Use zero indent at the top of the file - if clnum == 0 - return 0 - endif - - let line = getline(clnum) - let ind = -1 - - " If we got a closing bracket on an empty line, find its match and indent - " according to it. For parentheses we indent to its column - 1, for the - " others we indent to the containing line's MSL's level. Return -1 if fail. - let col = matchend(line, '^\s*[]})]') - if col > 0 && !s:IsInStringOrComment(clnum, col) - call cursor(clnum, col) - let bs = strpart('(){}[]', stridx(')}]', line[col - 1]) * 2, 2) - if searchpair(escape(bs[0], '\['), '', bs[1], 'bW', s:skip_expr) > 0 - if line[col-1]==')' && col('.') != col('$') - 1 - let ind = virtcol('.') - 1 - else - let ind = indent(s:GetMSL(line('.'))) - endif - endif - return ind - endif - - " If we have a deindenting keyword, find its match and indent to its level. - " TODO: this is messy - if s:Match(clnum, s:falcon_deindent_keywords) - call cursor(clnum, 1) - if searchpair(s:end_start_regex, s:end_middle_regex, s:end_end_regex, 'bW', - \ s:end_skip_expr) > 0 - let msl = s:GetMSL(line('.')) - let line = getline(line('.')) - - if strpart(line, 0, col('.') - 1) =~ '=\s*$' && - \ strpart(line, col('.') - 1, 2) !~ 'do' - let ind = virtcol('.') - 1 - elseif getline(msl) =~ '=\s*\(#.*\)\=$' - let ind = indent(line('.')) - else - let ind = indent(msl) - endif - endif - return ind - endif - - " If we are in a multi-line string or line-comment, don't do anything to it. - if s:IsInString(clnum, matchend(line, '^\s*') + 1) - return indent('.') - endif - - " Find a non-blank, non-multi-line string line above the current line. - let lnum = s:PrevNonBlankNonString(clnum - 1) - - " If the line is empty and inside a string, use the previous line. - if line =~ '^\s*$' && lnum != prevnonblank(clnum - 1) - return indent(prevnonblank(clnum)) - endif - - " At the start of the file use zero indent. - if lnum == 0 - return 0 - endif - - " Set up variables for the previous line. - let line = getline(lnum) - let ind = indent(lnum) - - " If the previous line ended with a block opening, add a level of indent. - if s:Match(lnum, s:block_regex) - return indent(s:GetMSL(lnum)) + shiftwidth() - endif - - " If it contained hanging closing brackets, find the rightmost one, find its - " match and indent according to that. - if line =~ '[[({]' || line =~ '[])}]\s*\%(#.*\)\=$' - let [opening, closing] = s:ExtraBrackets(lnum) - - if opening.pos != -1 - if opening.type == '(' && searchpair('(', '', ')', 'bW', s:skip_expr) > 0 - if col('.') + 1 == col('$') - return ind + shiftwidth() - else - return virtcol('.') - endif - else - let nonspace = matchend(line, '\S', opening.pos + 1) - 1 - return nonspace > 0 ? nonspace : ind + shiftwidth() - endif - elseif closing.pos != -1 - call cursor(lnum, closing.pos + 1) - normal! % - - if s:Match(line('.'), s:falcon_indent_keywords) - return indent('.') + shiftwidth() - else - return indent('.') - endif - else - call cursor(clnum, vcol) - end - endif - - " If the previous line ended with an "end", match that "end"s beginning's - " indent. - let col = s:Match(lnum, '\%(^\|[^.:@$]\)\<end\>\s*\%(#.*\)\=$') - if col > 0 - call cursor(lnum, col) - if searchpair(s:end_start_regex, '', s:end_end_regex, 'bW', - \ s:end_skip_expr) > 0 - let n = line('.') - let ind = indent('.') - let msl = s:GetMSL(n) - if msl != n - let ind = indent(msl) - end - return ind - endif - end - - let col = s:Match(lnum, s:falcon_indent_keywords) - if col > 0 - call cursor(lnum, col) - let ind = virtcol('.') - 1 + shiftwidth() - " TODO: make this better (we need to count them) (or, if a searchpair - " fails, we know that something is lacking an end and thus we indent a - " level - if s:Match(lnum, s:end_end_regex) - let ind = indent('.') - endif - return ind - endif - - " Set up variables to use and search for MSL to the previous line. - let p_lnum = lnum - let lnum = s:GetMSL(lnum) - - " If the previous line wasn't a MSL and is continuation return its indent. - " TODO: the || s:IsInString() thing worries me a bit. - if p_lnum != lnum - if s:Match(p_lnum, s:non_bracket_continuation_regex) || s:IsInString(p_lnum,strlen(line)) - return ind - endif - endif - - " Set up more variables, now that we know we wasn't continuation bound. - let line = getline(lnum) - let msl_ind = indent(lnum) - - " If the MSL line had an indenting keyword in it, add a level of indent. - " TODO: this does not take into account contrived things such as - " module Foo; class Bar; end - if s:Match(lnum, s:falcon_indent_keywords) - let ind = msl_ind + shiftwidth() - if s:Match(lnum, s:end_end_regex) - let ind = ind - shiftwidth() - endif - return ind - endif - - " If the previous line ended with [*+/.,-=], but wasn't a block ending or a - " closing bracket, indent one extra level. - if s:Match(lnum, s:non_bracket_continuation_regex) && !s:Match(lnum, '^\s*\([\])}]\|end\)') - if lnum == p_lnum - let ind = msl_ind + shiftwidth() - else - let ind = msl_ind - endif - return ind - endif - - return ind -endfunction - -" }}}1 - -let &cpo = s:cpo_save -unlet s:cpo_save - -" vim: set sw=4 sts=4 et tw=80 : - -endif |