diff options
Diffstat (limited to 'runtime/indent/ruby.vim')
| -rw-r--r-- | runtime/indent/ruby.vim | 229 |
1 files changed, 195 insertions, 34 deletions
diff --git a/runtime/indent/ruby.vim b/runtime/indent/ruby.vim index 095b3a43c..4f87ec782 100644 --- a/runtime/indent/ruby.vim +++ b/runtime/indent/ruby.vim @@ -13,12 +13,23 @@ if exists("b:did_indent") endif let b:did_indent = 1 +if !exists('g:ruby_indent_access_modifier_style') + " Possible values: "normal", "indent", "outdent" + let g:ruby_indent_access_modifier_style = 'normal' +endif + +if !exists('g:ruby_indent_block_style') + " Possible values: "expression", "do" + let g:ruby_indent_block_style = 'expression' +endif + setlocal nosmartindent " Now, set up our indentation expression and keys that trigger it. setlocal indentexpr=GetRubyIndent(v:lnum) -setlocal indentkeys=0{,0},0),0],!^F,o,O,e +setlocal indentkeys=0{,0},0),0],!^F,o,O,e,:,. setlocal indentkeys+==end,=else,=elsif,=when,=ensure,=rescue,==begin,==end +setlocal indentkeys+==private,=protected,=public " Only define the function once. if exists("*GetRubyIndent") @@ -34,7 +45,7 @@ set cpo&vim " Regex of syntax group names that are or delimit strings/symbols or are comments. let s:syng_strcom = '\<ruby\%(Regexp\|RegexpDelimiter\|RegexpEscape' . \ '\|Symbol\|String\|StringDelimiter\|StringEscape\|ASCIICode' . - \ '\|Interpolation\|NoInterpolation\|Comment\|Documentation\)\>' + \ '\|Interpolation\|InterpolationDelimiter\|NoInterpolation\|Comment\|Documentation\)\>' " Regex of syntax group names that are strings. let s:syng_string = @@ -49,9 +60,10 @@ let s:skip_expr = \ "synIDattr(synID(line('.'),col('.'),1),'name') =~ '".s:syng_strcom."'" " Regex used for words that, at the start of a line, add a level of indent. -let s:ruby_indent_keywords = '^\s*\zs\<\%(module\|class\|def\|if\|for' . - \ '\|while\|until\|else\|elsif\|case\|when\|unless\|begin\|ensure' . - \ '\|rescue\):\@!\>' . +let s:ruby_indent_keywords = + \ '^\s*\zs\<\%(module\|class\|if\|for' . + \ '\|while\|until\|else\|elsif\|case\|when\|unless\|begin\|ensure\|rescue' . + \ '\|\%(public\|protected\|private\)\=\s*def\):\@!\>' . \ '\|\%([=,*/%+-]\|<<\|>>\|:\s\)\s*\zs' . \ '\<\%(if\|for\|while\|until\|case\|unless\|begin\):\@!\>' @@ -64,7 +76,8 @@ let s:ruby_deindent_keywords = " TODO: the do here should be restricted somewhat (only at end of line)? let s:end_start_regex = \ '\C\%(^\s*\|[=,*/%+\-|;{]\|<<\|>>\|:\s\)\s*\zs' . - \ '\<\%(module\|class\|def\|if\|for\|while\|until\|case\|unless\|begin\):\@!\>' . + \ '\<\%(module\|class\|if\|for\|while\|until\|case\|unless\|begin' . + \ '\|\%(public\|protected\|private\)\=\s*def\):\@!\>' . \ '\|\%(^\|[^.:@$]\)\@<=\<do:\@!\>' " Regex that defines the middle-match for the 'end' keyword. @@ -82,16 +95,35 @@ let s:end_skip_expr = s:skip_expr . let s:non_bracket_continuation_regex = '\%([\\.,:*/%+]\|\<and\|\<or\|\%(<%\)\@<![=-]\|\W[|&?]\|||\|&&\)\s*\%(#.*\)\=$' " 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 continuable keywords +let s:continuable_regex = + \ '\C\%(^\s*\|[=,*/%+\-|;{]\|<<\|>>\|:\s\)\s*\zs' . + \ '\<\%(if\|for\|while\|until\|unless\):\@!\>' + " Regex that defines bracket continuations let s:bracket_continuation_regex = '%\@<!\%([({[]\)\s*\%(#.*\)\=$' +" Regex that defines dot continuations +let s:dot_continuation_regex = '%\@<!\.\s*\%(#.*\)\=$' + +" Regex that defines backslash continuations +let s:backslash_continuation_regex = '%\@<!\\\s*$' + +" Regex that defines end of bracket continuation followed by another continuation +let s:bracket_switch_continuation_regex = '^\([^(]\+\zs).\+\)\+'.s:continuation_regex + " Regex that defines the first part of a splat pattern let s:splat_regex = '[[,(]\s*\*\s*\%(#.*\)\=$' +" Regex that describes all indent access modifiers +let s:access_modifier_regex = '\C^\s*\%(public\|protected\|private\)\s*\%(#.*\)\=$' + +" Regex that describes the indent access modifiers (excludes public) +let s:indent_access_modifier_regex = '\C^\s*\%(protected\|private\)\s*\%(#.*\)\=$' + " Regex that defines blocks. " " Note that there's a slight problem with this regex and s:continuation_regex. @@ -102,10 +134,13 @@ let s:splat_regex = '[[,(]\s*\*\s*\%(#.*\)\=$' " 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*\%(#.*\)\=$' + \ '\%(\<do:\@!\>\|%\@<!{\)\s*\%(|[^|]*|\)\=\s*\%(#.*\)\=$' let s:block_continuation_regex = '^\s*[^])}\t ].*'.s:block_regex +" Regex that describes a leading operator (only a method call's dot for now) +let s:leading_operator_regex = '^\s*[.]' + " 2. Auxiliary Functions {{{1 " ====================== @@ -165,7 +200,21 @@ function s:GetMSL(lnum) " Otherwise, terminate search as we have found our MSL already. let line = getline(lnum) - if s:Match(lnum, s:splat_regex) + if !s:Match(msl, s:backslash_continuation_regex) && + \ s:Match(lnum, s:backslash_continuation_regex) + " If the current line doesn't end in a backslash, but the previous one + " does, look for that line's msl + " + " Example: + " foo = "bar" \ + " "baz" + " + let msl = lnum + elseif s:Match(msl, s:leading_operator_regex) + " If the current line starts with a leading operator, keep its indent + " and keep looking for an MSL. + let msl = lnum + elseif s:Match(lnum, s:splat_regex) " If the above line looks like the "*" of a splat, use the current one's " indentation. " @@ -175,7 +224,7 @@ function s:GetMSL(lnum) " something " return msl - elseif s:Match(line, s:non_bracket_continuation_regex) && + elseif s:Match(lnum, 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. @@ -186,6 +235,18 @@ function s:GetMSL(lnum) " three " let msl = lnum + elseif s:Match(lnum, s:dot_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 dot, keep going to see if the previous line is the + " start of another continuation. + " + " Example: + " parent. + " method_call { + " 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 @@ -299,18 +360,39 @@ function s:ExtraBrackets(lnum) 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 + let line = getline(a:lnum) + let offset = match(line, '\C'.a:regex) + let col = offset + 1 -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) + while offset > -1 && s:IsInStringOrComment(a:lnum, col) + let offset = match(line, '\C'.a:regex, offset + 1) + let col = offset + 1 endwhile - return col + 1 + + if offset > -1 + return col + else + return 0 + endif +endfunction + +" Locates the containing class/module's definition line, ignoring nested classes +" along the way. +" +function! s:FindContainingClass() + let saved_position = getpos('.') + + while searchpair(s:end_start_regex, s:end_middle_regex, s:end_end_regex, 'bW', + \ s:end_skip_expr) > 0 + if expand('<cword>') =~# '\<class\|module\>' + let found_lnum = line('.') + call setpos('.', saved_position) + return found_lnum + endif + endif + + call setpos('.', saved_position) + return 0 endfunction " 3. GetRubyIndent Function {{{1 @@ -320,6 +402,13 @@ function GetRubyIndent(...) " 3.1. Setup {{{2 " ---------- + " The value of a single shift-width + if exists('*shiftwidth') + let sw = shiftwidth() + else + let sw = &sw + endif + " For the current line, use the first argument if given, else v:lnum let clnum = a:0 ? a:1 : v:lnum @@ -333,6 +422,24 @@ function GetRubyIndent(...) let line = getline(clnum) let ind = -1 + " If this line is an access modifier keyword, align according to the closest + " class declaration. + if g:ruby_indent_access_modifier_style == 'indent' + if s:Match(clnum, s:access_modifier_regex) + let class_line = s:FindContainingClass() + if class_line > 0 + return indent(class_line) + sw + endif + endif + elseif g:ruby_indent_access_modifier_style == 'outdent' + if s:Match(clnum, s:access_modifier_regex) + let class_line = s:FindContainingClass() + if class_line > 0 + return indent(class_line) + endif + endif + endif + " 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. @@ -343,7 +450,9 @@ function GetRubyIndent(...) if searchpair(escape(bs[0], '\['), '', bs[1], 'bW', s:skip_expr) > 0 if line[col-1]==')' && col('.') != col('$') - 1 let ind = virtcol('.') - 1 - else + elseif g:ruby_indent_block_style == 'do' + let ind = indent(line('.')) + else " g:ruby_indent_block_style == 'expression' let ind = indent(s:GetMSL(line('.'))) endif endif @@ -366,10 +475,17 @@ function GetRubyIndent(...) if strpart(line, 0, col('.') - 1) =~ '=\s*$' && \ strpart(line, col('.') - 1, 2) !~ 'do' + " assignment to case/begin/etc, on the same line, hanging indent let ind = virtcol('.') - 1 + elseif g:ruby_indent_block_style == 'do' + " align to line of the "do", not to the MSL + let ind = indent(line('.')) elseif getline(msl) =~ '=\s*\(#.*\)\=$' + " in the case of assignment to the MSL, align to the starting line, + " not to the MSL let ind = indent(line('.')) else + " align to the MSL let ind = indent(msl) endif endif @@ -389,6 +505,11 @@ function GetRubyIndent(...) return 0 endif + " If the current line starts with a leading operator, add a level of indent. + if s:Match(clnum, s:leading_operator_regex) + return indent(s:GetMSL(clnum)) + sw + endif + " 3.3. Work on the previous line. {{{2 " ------------------------------- @@ -409,14 +530,50 @@ function GetRubyIndent(...) let line = getline(lnum) let ind = indent(lnum) + if g:ruby_indent_access_modifier_style == 'indent' + " If the previous line was a private/protected keyword, add a + " level of indent. + if s:Match(lnum, s:indent_access_modifier_regex) + return indent(lnum) + sw + endif + elseif g:ruby_indent_access_modifier_style == 'outdent' + " If the previous line was a private/protected/public keyword, add + " a level of indent, since the keyword has been out-dented. + if s:Match(lnum, s:access_modifier_regex) + return indent(lnum) + sw + endif + endif + + if s:Match(lnum, s:continuable_regex) && s:Match(lnum, s:continuation_regex) + return indent(s:GetMSL(lnum)) + sw + sw + endif + " 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)) + &sw + let msl = s:GetMSL(lnum) + + if g:ruby_indent_block_style == 'do' + " don't align to the msl, align to the "do" + let ind = indent(lnum) + sw + elseif getline(msl) =~ '=\s*\(#.*\)\=$' + " in the case of assignment to the msl, align to the starting line, + " not to the msl + let ind = indent(lnum) + sw + else + let ind = indent(msl) + sw + endif + return ind + endif + + " If the previous line started with a leading operator, use its MSL's level + " of indent + if s:Match(lnum, s:leading_operator_regex) + return indent(s:GetMSL(lnum)) endif " If the previous line ended with the "*" of a splat, add a level of indent if line =~ s:splat_regex - return indent(lnum) + &sw + return indent(lnum) + sw endif " If the previous line contained unclosed opening brackets and we are still @@ -431,22 +588,22 @@ function GetRubyIndent(...) if opening.pos != -1 if opening.type == '(' && searchpair('(', '', ')', 'bW', s:skip_expr) > 0 if col('.') + 1 == col('$') - return ind + &sw + return ind + sw else return virtcol('.') endif else let nonspace = matchend(line, '\S', opening.pos + 1) - 1 - return nonspace > 0 ? nonspace : ind + &sw + return nonspace > 0 ? nonspace : ind + sw endif elseif closing.pos != -1 call cursor(lnum, closing.pos + 1) normal! % if s:Match(line('.'), s:ruby_indent_keywords) - return indent('.') + &sw + return indent('.') + sw else - return indent('.') + return indent(s:GetMSL(line('.'))) endif else call cursor(clnum, vcol) @@ -473,7 +630,7 @@ function GetRubyIndent(...) let col = s:Match(lnum, s:ruby_indent_keywords) if col > 0 call cursor(lnum, col) - let ind = virtcol('.') - 1 + &sw + let ind = virtcol('.') - 1 + sw " 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 @@ -490,10 +647,14 @@ function GetRubyIndent(...) 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 the previous line wasn't a MSL. if p_lnum != lnum - if s:Match(p_lnum, s:non_bracket_continuation_regex) || s:IsInString(p_lnum,strlen(line)) + " If previous line ends bracket and begins non-bracket continuation decrease indent by 1. + if s:Match(p_lnum, s:bracket_switch_continuation_regex) + return ind - 1 + " If previous line is a continuation return its indent. + " TODO: the || s:IsInString() thing worries me a bit. + elseif s:Match(p_lnum, s:non_bracket_continuation_regex) || s:IsInString(p_lnum,strlen(line)) return ind endif endif @@ -506,9 +667,9 @@ function GetRubyIndent(...) " TODO: this does not take into account contrived things such as " module Foo; class Bar; end if s:Match(lnum, s:ruby_indent_keywords) - let ind = msl_ind + &sw + let ind = msl_ind + sw if s:Match(lnum, s:end_end_regex) - let ind = ind - &sw + let ind = ind - sw endif return ind endif @@ -517,7 +678,7 @@ function GetRubyIndent(...) " 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 + &sw + let ind = msl_ind + sw else let ind = msl_ind endif |