Mercurial > vim
annotate runtime/indent/ruby.vim @ 18486:9d887cad7315
Added tag v8.1.2237 for changeset 63ee3c2b140fe1b4801389872a8e47aec19d028b
| author | Bram Moolenaar <Bram@vim.org> |
|---|---|
| date | Thu, 31 Oct 2019 20:00:04 +0100 |
| parents | f0f06837a699 |
| children | 70ce979e76bc |
| rev | line source |
|---|---|
| 7 | 1 " Vim indent file |
| 843 | 2 " Language: Ruby |
| 15512 | 3 " Maintainer: Andrew Radev <andrey.radev@gmail.com> |
| 4 " Previous Maintainer: Nikolai Weibull <now at bitwi.se> | |
| 4869 | 5 " URL: https://github.com/vim-ruby/vim-ruby |
| 843 | 6 " Release Coordinator: Doug Kearns <dougkearns@gmail.com> |
| 15512 | 7 " Last Change: 2019 Jan 06 |
| 530 | 8 |
| 9 " 0. Initialization {{{1 | |
| 10 " ================= | |
| 7 | 11 |
| 12 " Only load this indent file when no other was loaded. | |
| 13 if exists("b:did_indent") | |
| 14 finish | |
| 15 endif | |
| 16 let b:did_indent = 1 | |
| 17 | |
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18 if !exists('g:ruby_indent_access_modifier_style') |
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19 " Possible values: "normal", "indent", "outdent" |
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20 let g:ruby_indent_access_modifier_style = 'normal' |
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21 endif |
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22 |
| 15512 | 23 if !exists('g:ruby_indent_assignment_style') |
| 24 " Possible values: "variable", "hanging" | |
| 25 let g:ruby_indent_assignment_style = 'hanging' | |
| 26 endif | |
| 27 | |
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28 if !exists('g:ruby_indent_block_style') |
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29 " Possible values: "expression", "do" |
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30 let g:ruby_indent_block_style = 'expression' |
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31 endif |
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32 |
| 843 | 33 setlocal nosmartindent |
| 34 | |
| 530 | 35 " Now, set up our indentation expression and keys that trigger it. |
| 4869 | 36 setlocal indentexpr=GetRubyIndent(v:lnum) |
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37 setlocal indentkeys=0{,0},0),0],!^F,o,O,e,:,. |
| 4869 | 38 setlocal indentkeys+==end,=else,=elsif,=when,=ensure,=rescue,==begin,==end |
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39 setlocal indentkeys+==private,=protected,=public |
| 7 | 40 |
| 41 " Only define the function once. | |
| 42 if exists("*GetRubyIndent") | |
| 43 finish | |
| 44 endif | |
| 45 | |
| 530 | 46 let s:cpo_save = &cpo |
| 47 set cpo&vim | |
| 48 | |
| 49 " 1. Variables {{{1 | |
| 50 " ============ | |
| 51 | |
| 15512 | 52 " Syntax group names that are strings. |
| 53 let s:syng_string = | |
| 54 \ ['String', 'Interpolation', 'InterpolationDelimiter', 'NoInterpolation', 'StringEscape'] | |
| 530 | 55 |
| 15512 | 56 " Syntax group names that are strings or documentation. |
| 57 let s:syng_stringdoc = s:syng_string + ['Documentation'] | |
| 530 | 58 |
| 15512 | 59 " Syntax group names that are or delimit strings/symbols/regexes or are comments. |
| 60 let s:syng_strcom = s:syng_stringdoc + | |
| 61 \ ['Regexp', 'RegexpDelimiter', 'RegexpEscape', | |
| 62 \ 'Symbol', 'StringDelimiter', 'ASCIICode', 'Comment'] | |
| 530 | 63 |
| 64 " Expression used to check whether we should skip a match with searchpair(). | |
| 65 let s:skip_expr = | |
| 15512 | 66 \ 'index(map('.string(s:syng_strcom).',"hlID(''ruby''.v:val)"), synID(line("."),col("."),1)) >= 0' |
| 530 | 67 |
| 68 " Regex used for words that, at the start of a line, add a level of indent. | |
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69 let s:ruby_indent_keywords = |
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70 \ '^\s*\zs\<\%(module\|class\|if\|for' . |
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71 \ '\|while\|until\|else\|elsif\|case\|when\|unless\|begin\|ensure\|rescue' . |
| 15512 | 72 \ '\|\%(\K\k*[!?]\?\)\=\s*def\):\@!\>' . |
| 4869 | 73 \ '\|\%([=,*/%+-]\|<<\|>>\|:\s\)\s*\zs' . |
| 74 \ '\<\%(if\|for\|while\|until\|case\|unless\|begin\):\@!\>' | |
| 530 | 75 |
| 76 " Regex used for words that, at the start of a line, remove a level of indent. | |
| 77 let s:ruby_deindent_keywords = | |
| 4869 | 78 \ '^\s*\zs\<\%(ensure\|else\|rescue\|elsif\|when\|end\):\@!\>' |
| 530 | 79 |
| 80 " Regex that defines the start-match for the 'end' keyword. | |
| 81 "let s:end_start_regex = '\%(^\|[^.]\)\<\%(module\|class\|def\|if\|for\|while\|until\|case\|unless\|begin\|do\)\>' | |
| 82 " TODO: the do here should be restricted somewhat (only at end of line)? | |
| 4869 | 83 let s:end_start_regex = |
| 84 \ '\C\%(^\s*\|[=,*/%+\-|;{]\|<<\|>>\|:\s\)\s*\zs' . | |
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85 \ '\<\%(module\|class\|if\|for\|while\|until\|case\|unless\|begin' . |
| 15512 | 86 \ '\|\%(\K\k*[!?]\?\)\=\s*def\):\@!\>' . |
| 4869 | 87 \ '\|\%(^\|[^.:@$]\)\@<=\<do:\@!\>' |
| 530 | 88 |
| 89 " Regex that defines the middle-match for the 'end' keyword. | |
| 4869 | 90 let s:end_middle_regex = '\<\%(ensure\|else\|\%(\%(^\|;\)\s*\)\@<=\<rescue:\@!\>\|when\|elsif\):\@!\>' |
| 530 | 91 |
| 92 " Regex that defines the end-match for the 'end' keyword. | |
| 4869 | 93 let s:end_end_regex = '\%(^\|[^.:@$]\)\@<=\<end:\@!\>' |
| 530 | 94 |
| 95 " Expression used for searchpair() call for finding match for 'end' keyword. | |
| 96 let s:end_skip_expr = s:skip_expr . | |
| 97 \ ' || (expand("<cword>") == "do"' . | |
| 4869 | 98 \ ' && getline(".") =~ "^\\s*\\<\\(while\\|until\\|for\\):\\@!\\>")' |
| 530 | 99 |
| 100 " Regex that defines continuation lines, not including (, {, or [. | |
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101 let s:non_bracket_continuation_regex = |
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102 \ '\%([\\.,:*/%+]\|\<and\|\<or\|\%(<%\)\@<![=-]\|:\@<![^[:alnum:]:][|&?]\|||\|&&\)\s*\%(#.*\)\=$' |
| 530 | 103 |
| 104 " Regex that defines continuation lines. | |
| 4869 | 105 let s:continuation_regex = |
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106 \ '\%(%\@<![({[\\.,:*/%+]\|\<and\|\<or\|\%(<%\)\@<![=-]\|:\@<![^[:alnum:]:][|&?]\|||\|&&\)\s*\%(#.*\)\=$' |
| 4869 | 107 |
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108 " Regex that defines continuable keywords |
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109 let s:continuable_regex = |
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110 \ '\C\%(^\s*\|[=,*/%+\-|;{]\|<<\|>>\|:\s\)\s*\zs' . |
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111 \ '\<\%(if\|for\|while\|until\|unless\):\@!\>' |
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112 |
| 4869 | 113 " Regex that defines bracket continuations |
| 114 let s:bracket_continuation_regex = '%\@<!\%([({[]\)\s*\%(#.*\)\=$' | |
| 115 | |
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116 " Regex that defines dot continuations |
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117 let s:dot_continuation_regex = '%\@<!\.\s*\%(#.*\)\=$' |
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118 |
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119 " Regex that defines backslash continuations |
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120 let s:backslash_continuation_regex = '%\@<!\\\s*$' |
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121 |
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122 " Regex that defines end of bracket continuation followed by another continuation |
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123 let s:bracket_switch_continuation_regex = '^\([^(]\+\zs).\+\)\+'.s:continuation_regex |
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124 |
| 4869 | 125 " Regex that defines the first part of a splat pattern |
| 126 let s:splat_regex = '[[,(]\s*\*\s*\%(#.*\)\=$' | |
| 530 | 127 |
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128 " Regex that describes all indent access modifiers |
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129 let s:access_modifier_regex = '\C^\s*\%(public\|protected\|private\)\s*\%(#.*\)\=$' |
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130 |
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131 " Regex that describes the indent access modifiers (excludes public) |
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132 let s:indent_access_modifier_regex = '\C^\s*\%(protected\|private\)\s*\%(#.*\)\=$' |
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133 |
| 530 | 134 " Regex that defines blocks. |
| 4869 | 135 " |
| 136 " Note that there's a slight problem with this regex and s:continuation_regex. | |
| 137 " Code like this will be matched by both: | |
| 138 " | |
| 139 " method_call do |(a, b)| | |
| 140 " | |
| 141 " The reason is that the pipe matches a hanging "|" operator. | |
| 142 " | |
| 530 | 143 let s:block_regex = |
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144 \ '\%(\<do:\@!\>\|%\@<!{\)\s*\%(|[^|]*|\)\=\s*\%(#.*\)\=$' |
| 4869 | 145 |
| 146 let s:block_continuation_regex = '^\s*[^])}\t ].*'.s:block_regex | |
| 530 | 147 |
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148 " Regex that describes a leading operator (only a method call's dot for now) |
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149 let s:leading_operator_regex = '^\s*[.]' |
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150 |
| 15512 | 151 " 2. GetRubyIndent Function {{{1 |
| 152 " ========================= | |
| 153 | |
| 154 function! GetRubyIndent(...) abort | |
| 155 " 2.1. Setup {{{2 | |
| 156 " ---------- | |
| 157 | |
| 158 let indent_info = {} | |
| 159 | |
| 160 " The value of a single shift-width | |
| 161 if exists('*shiftwidth') | |
| 162 let indent_info.sw = shiftwidth() | |
| 163 else | |
| 164 let indent_info.sw = &sw | |
| 165 endif | |
| 166 | |
| 167 " For the current line, use the first argument if given, else v:lnum | |
| 168 let indent_info.clnum = a:0 ? a:1 : v:lnum | |
| 169 let indent_info.cline = getline(indent_info.clnum) | |
| 170 | |
| 171 " Set up variables for restoring position in file. Could use clnum here. | |
| 172 let indent_info.col = col('.') | |
| 173 | |
| 174 " 2.2. Work on the current line {{{2 | |
| 175 " ----------------------------- | |
| 176 let indent_callback_names = [ | |
| 177 \ 's:AccessModifier', | |
| 178 \ 's:ClosingBracketOnEmptyLine', | |
| 179 \ 's:BlockComment', | |
| 180 \ 's:DeindentingKeyword', | |
| 181 \ 's:MultilineStringOrLineComment', | |
| 182 \ 's:ClosingHeredocDelimiter', | |
| 183 \ 's:LeadingOperator', | |
| 184 \ ] | |
| 185 | |
| 186 for callback_name in indent_callback_names | |
| 187 " Decho "Running: ".callback_name | |
| 188 let indent = call(function(callback_name), [indent_info]) | |
| 189 | |
| 190 if indent >= 0 | |
| 191 " Decho "Match: ".callback_name." indent=".indent." info=".string(indent_info) | |
| 192 return indent | |
| 193 endif | |
| 194 endfor | |
| 195 | |
| 196 " 2.3. Work on the previous line. {{{2 | |
| 197 " ------------------------------- | |
| 198 | |
| 199 " Special case: we don't need the real s:PrevNonBlankNonString for an empty | |
| 200 " line inside a string. And that call can be quite expensive in that | |
| 201 " particular situation. | |
| 202 let indent_callback_names = [ | |
| 203 \ 's:EmptyInsideString', | |
| 204 \ ] | |
| 205 | |
| 206 for callback_name in indent_callback_names | |
| 207 " Decho "Running: ".callback_name | |
| 208 let indent = call(function(callback_name), [indent_info]) | |
| 209 | |
| 210 if indent >= 0 | |
| 211 " Decho "Match: ".callback_name." indent=".indent." info=".string(indent_info) | |
| 212 return indent | |
| 213 endif | |
| 214 endfor | |
| 215 | |
| 216 " Previous line number | |
| 217 let indent_info.plnum = s:PrevNonBlankNonString(indent_info.clnum - 1) | |
| 218 let indent_info.pline = getline(indent_info.plnum) | |
| 219 | |
| 220 let indent_callback_names = [ | |
| 221 \ 's:StartOfFile', | |
| 222 \ 's:AfterAccessModifier', | |
| 223 \ 's:ContinuedLine', | |
| 224 \ 's:AfterBlockOpening', | |
| 225 \ 's:AfterHangingSplat', | |
| 226 \ 's:AfterUnbalancedBracket', | |
| 227 \ 's:AfterLeadingOperator', | |
| 228 \ 's:AfterEndKeyword', | |
| 229 \ 's:AfterIndentKeyword', | |
| 230 \ ] | |
| 231 | |
| 232 for callback_name in indent_callback_names | |
| 233 " Decho "Running: ".callback_name | |
| 234 let indent = call(function(callback_name), [indent_info]) | |
| 235 | |
| 236 if indent >= 0 | |
| 237 " Decho "Match: ".callback_name." indent=".indent." info=".string(indent_info) | |
| 238 return indent | |
| 239 endif | |
| 240 endfor | |
| 241 | |
| 242 " 2.4. Work on the MSL line. {{{2 | |
| 243 " -------------------------- | |
| 244 let indent_callback_names = [ | |
| 245 \ 's:PreviousNotMSL', | |
| 246 \ 's:IndentingKeywordInMSL', | |
| 247 \ 's:ContinuedHangingOperator', | |
| 248 \ ] | |
| 249 | |
| 250 " Most Significant line based on the previous one -- in case it's a | |
| 251 " contination of something above | |
| 252 let indent_info.plnum_msl = s:GetMSL(indent_info.plnum) | |
| 253 | |
| 254 for callback_name in indent_callback_names | |
| 255 " Decho "Running: ".callback_name | |
| 256 let indent = call(function(callback_name), [indent_info]) | |
| 257 | |
| 258 if indent >= 0 | |
| 259 " Decho "Match: ".callback_name." indent=".indent." info=".string(indent_info) | |
| 260 return indent | |
| 261 endif | |
| 262 endfor | |
| 263 | |
| 264 " }}}2 | |
| 265 | |
| 266 " By default, just return the previous line's indent | |
| 267 " Decho "Default case matched" | |
| 268 return indent(indent_info.plnum) | |
| 269 endfunction | |
| 270 | |
| 271 " 3. Indenting Logic Callbacks {{{1 | |
| 272 " ============================ | |
| 273 | |
| 274 function! s:AccessModifier(cline_info) abort | |
| 275 let info = a:cline_info | |
| 276 | |
| 277 " If this line is an access modifier keyword, align according to the closest | |
| 278 " class declaration. | |
| 279 if g:ruby_indent_access_modifier_style == 'indent' | |
| 280 if s:Match(info.clnum, s:access_modifier_regex) | |
| 281 let class_lnum = s:FindContainingClass() | |
| 282 if class_lnum > 0 | |
| 283 return indent(class_lnum) + info.sw | |
| 284 endif | |
| 285 endif | |
| 286 elseif g:ruby_indent_access_modifier_style == 'outdent' | |
| 287 if s:Match(info.clnum, s:access_modifier_regex) | |
| 288 let class_lnum = s:FindContainingClass() | |
| 289 if class_lnum > 0 | |
| 290 return indent(class_lnum) | |
| 291 endif | |
| 292 endif | |
| 293 endif | |
| 294 | |
| 295 return -1 | |
| 296 endfunction | |
| 297 | |
| 298 function! s:ClosingBracketOnEmptyLine(cline_info) abort | |
| 299 let info = a:cline_info | |
| 300 | |
| 301 " If we got a closing bracket on an empty line, find its match and indent | |
| 302 " according to it. For parentheses we indent to its column - 1, for the | |
| 303 " others we indent to the containing line's MSL's level. Return -1 if fail. | |
| 304 let col = matchend(info.cline, '^\s*[]})]') | |
| 305 | |
| 306 if col > 0 && !s:IsInStringOrComment(info.clnum, col) | |
| 307 call cursor(info.clnum, col) | |
| 308 let closing_bracket = info.cline[col - 1] | |
| 309 let bracket_pair = strpart('(){}[]', stridx(')}]', closing_bracket) * 2, 2) | |
| 310 | |
| 311 if searchpair(escape(bracket_pair[0], '\['), '', bracket_pair[1], 'bW', s:skip_expr) > 0 | |
| 312 if closing_bracket == ')' && col('.') != col('$') - 1 | |
| 313 let ind = virtcol('.') - 1 | |
| 314 elseif g:ruby_indent_block_style == 'do' | |
| 315 let ind = indent(line('.')) | |
| 316 else " g:ruby_indent_block_style == 'expression' | |
| 317 let ind = indent(s:GetMSL(line('.'))) | |
| 318 endif | |
| 319 endif | |
| 320 | |
| 321 return ind | |
| 322 endif | |
| 323 | |
| 324 return -1 | |
| 325 endfunction | |
| 326 | |
| 327 function! s:BlockComment(cline_info) abort | |
| 328 " If we have a =begin or =end set indent to first column. | |
| 329 if match(a:cline_info.cline, '^\s*\%(=begin\|=end\)$') != -1 | |
| 330 return 0 | |
| 331 endif | |
| 332 return -1 | |
| 333 endfunction | |
| 334 | |
| 335 function! s:DeindentingKeyword(cline_info) abort | |
| 336 let info = a:cline_info | |
| 337 | |
| 338 " If we have a deindenting keyword, find its match and indent to its level. | |
| 339 " TODO: this is messy | |
| 340 if s:Match(info.clnum, s:ruby_deindent_keywords) | |
| 341 call cursor(info.clnum, 1) | |
| 342 | |
| 343 if searchpair(s:end_start_regex, s:end_middle_regex, s:end_end_regex, 'bW', | |
| 344 \ s:end_skip_expr) > 0 | |
| 345 let msl = s:GetMSL(line('.')) | |
| 346 let line = getline(line('.')) | |
| 347 | |
| 348 if s:IsAssignment(line, col('.')) && | |
| 349 \ strpart(line, col('.') - 1, 2) !~ 'do' | |
| 350 " assignment to case/begin/etc, on the same line | |
| 351 if g:ruby_indent_assignment_style == 'hanging' | |
| 352 " hanging indent | |
| 353 let ind = virtcol('.') - 1 | |
| 354 else | |
| 355 " align with variable | |
| 356 let ind = indent(line('.')) | |
| 357 endif | |
| 358 elseif g:ruby_indent_block_style == 'do' | |
| 359 " align to line of the "do", not to the MSL | |
| 360 let ind = indent(line('.')) | |
| 361 elseif getline(msl) =~ '=\s*\(#.*\)\=$' | |
| 362 " in the case of assignment to the MSL, align to the starting line, | |
| 363 " not to the MSL | |
| 364 let ind = indent(line('.')) | |
| 365 else | |
| 366 " align to the MSL | |
| 367 let ind = indent(msl) | |
| 368 endif | |
| 369 endif | |
| 370 return ind | |
| 371 endif | |
| 372 | |
| 373 return -1 | |
| 374 endfunction | |
| 375 | |
| 376 function! s:MultilineStringOrLineComment(cline_info) abort | |
| 377 let info = a:cline_info | |
| 378 | |
| 379 " If we are in a multi-line string or line-comment, don't do anything to it. | |
| 380 if s:IsInStringOrDocumentation(info.clnum, matchend(info.cline, '^\s*') + 1) | |
| 381 return indent(info.clnum) | |
| 382 endif | |
| 383 return -1 | |
| 384 endfunction | |
| 385 | |
| 386 function! s:ClosingHeredocDelimiter(cline_info) abort | |
| 387 let info = a:cline_info | |
| 388 | |
| 389 " If we are at the closing delimiter of a "<<" heredoc-style string, set the | |
| 390 " indent to 0. | |
| 391 if info.cline =~ '^\k\+\s*$' | |
| 392 \ && s:IsInStringDelimiter(info.clnum, 1) | |
| 393 \ && search('\V<<'.info.cline, 'nbW') > 0 | |
| 394 return 0 | |
| 395 endif | |
| 396 | |
| 397 return -1 | |
| 398 endfunction | |
| 399 | |
| 400 function! s:LeadingOperator(cline_info) abort | |
| 401 " If the current line starts with a leading operator, add a level of indent. | |
| 402 if s:Match(a:cline_info.clnum, s:leading_operator_regex) | |
| 403 return indent(s:GetMSL(a:cline_info.clnum)) + a:cline_info.sw | |
| 404 endif | |
| 405 return -1 | |
| 406 endfunction | |
| 407 | |
| 408 function! s:EmptyInsideString(pline_info) abort | |
| 409 " If the line is empty and inside a string (the previous line is a string, | |
| 410 " too), use the previous line's indent | |
| 411 let info = a:pline_info | |
| 412 | |
| 413 let plnum = prevnonblank(info.clnum - 1) | |
| 414 let pline = getline(plnum) | |
| 415 | |
| 416 if info.cline =~ '^\s*$' | |
| 417 \ && s:IsInStringOrComment(plnum, 1) | |
| 418 \ && s:IsInStringOrComment(plnum, strlen(pline)) | |
| 419 return indent(plnum) | |
| 420 endif | |
| 421 return -1 | |
| 422 endfunction | |
| 423 | |
| 424 function! s:StartOfFile(pline_info) abort | |
| 425 " At the start of the file use zero indent. | |
| 426 if a:pline_info.plnum == 0 | |
| 427 return 0 | |
| 428 endif | |
| 429 return -1 | |
| 430 endfunction | |
| 431 | |
| 432 function! s:AfterAccessModifier(pline_info) abort | |
| 433 let info = a:pline_info | |
| 434 | |
| 435 if g:ruby_indent_access_modifier_style == 'indent' | |
| 436 " If the previous line was a private/protected keyword, add a | |
| 437 " level of indent. | |
| 438 if s:Match(info.plnum, s:indent_access_modifier_regex) | |
| 439 return indent(info.plnum) + info.sw | |
| 440 endif | |
| 441 elseif g:ruby_indent_access_modifier_style == 'outdent' | |
| 442 " If the previous line was a private/protected/public keyword, add | |
| 443 " a level of indent, since the keyword has been out-dented. | |
| 444 if s:Match(info.plnum, s:access_modifier_regex) | |
| 445 return indent(info.plnum) + info.sw | |
| 446 endif | |
| 447 endif | |
| 448 return -1 | |
| 449 endfunction | |
| 450 | |
| 451 " Example: | |
| 452 " | |
| 453 " if foo || bar || | |
| 454 " baz || bing | |
| 455 " puts "foo" | |
| 456 " end | |
| 457 " | |
| 458 function! s:ContinuedLine(pline_info) abort | |
| 459 let info = a:pline_info | |
| 460 | |
| 461 let col = s:Match(info.plnum, s:ruby_indent_keywords) | |
| 462 if s:Match(info.plnum, s:continuable_regex) && | |
| 463 \ s:Match(info.plnum, s:continuation_regex) | |
| 464 if col > 0 && s:IsAssignment(info.pline, col) | |
| 465 if g:ruby_indent_assignment_style == 'hanging' | |
| 466 " hanging indent | |
| 467 let ind = col - 1 | |
| 468 else | |
| 469 " align with variable | |
| 470 let ind = indent(info.plnum) | |
| 471 endif | |
| 472 else | |
| 473 let ind = indent(s:GetMSL(info.plnum)) | |
| 474 endif | |
| 475 return ind + info.sw + info.sw | |
| 476 endif | |
| 477 return -1 | |
| 478 endfunction | |
| 479 | |
| 480 function! s:AfterBlockOpening(pline_info) abort | |
| 481 let info = a:pline_info | |
| 482 | |
| 483 " If the previous line ended with a block opening, add a level of indent. | |
| 484 if s:Match(info.plnum, s:block_regex) | |
| 485 if g:ruby_indent_block_style == 'do' | |
| 486 " don't align to the msl, align to the "do" | |
| 487 let ind = indent(info.plnum) + info.sw | |
| 488 else | |
| 489 let plnum_msl = s:GetMSL(info.plnum) | |
| 490 | |
| 491 if getline(plnum_msl) =~ '=\s*\(#.*\)\=$' | |
| 492 " in the case of assignment to the msl, align to the starting line, | |
| 493 " not to the msl | |
| 494 let ind = indent(info.plnum) + info.sw | |
| 495 else | |
| 496 let ind = indent(plnum_msl) + info.sw | |
| 497 endif | |
| 498 endif | |
| 499 | |
| 500 return ind | |
| 501 endif | |
| 502 | |
| 503 return -1 | |
| 504 endfunction | |
| 505 | |
| 506 function! s:AfterLeadingOperator(pline_info) abort | |
| 507 " If the previous line started with a leading operator, use its MSL's level | |
| 508 " of indent | |
| 509 if s:Match(a:pline_info.plnum, s:leading_operator_regex) | |
| 510 return indent(s:GetMSL(a:pline_info.plnum)) | |
| 511 endif | |
| 512 return -1 | |
| 513 endfunction | |
| 514 | |
| 515 function! s:AfterHangingSplat(pline_info) abort | |
| 516 let info = a:pline_info | |
| 517 | |
| 518 " If the previous line ended with the "*" of a splat, add a level of indent | |
| 519 if info.pline =~ s:splat_regex | |
| 520 return indent(info.plnum) + info.sw | |
| 521 endif | |
| 522 return -1 | |
| 523 endfunction | |
| 524 | |
| 525 function! s:AfterUnbalancedBracket(pline_info) abort | |
| 526 let info = a:pline_info | |
| 527 | |
| 528 " If the previous line contained unclosed opening brackets and we are still | |
| 529 " in them, find the rightmost one and add indent depending on the bracket | |
| 530 " type. | |
| 531 " | |
| 532 " If it contained hanging closing brackets, find the rightmost one, find its | |
| 533 " match and indent according to that. | |
| 534 if info.pline =~ '[[({]' || info.pline =~ '[])}]\s*\%(#.*\)\=$' | |
| 535 let [opening, closing] = s:ExtraBrackets(info.plnum) | |
| 536 | |
| 537 if opening.pos != -1 | |
| 538 if opening.type == '(' && searchpair('(', '', ')', 'bW', s:skip_expr) > 0 | |
| 539 if col('.') + 1 == col('$') | |
| 540 return indent(info.plnum) + info.sw | |
| 541 else | |
| 542 return virtcol('.') | |
| 543 endif | |
| 544 else | |
| 545 let nonspace = matchend(info.pline, '\S', opening.pos + 1) - 1 | |
| 546 return nonspace > 0 ? nonspace : indent(info.plnum) + info.sw | |
| 547 endif | |
| 548 elseif closing.pos != -1 | |
| 549 call cursor(info.plnum, closing.pos + 1) | |
| 550 normal! % | |
| 551 | |
| 552 if s:Match(line('.'), s:ruby_indent_keywords) | |
| 553 return indent('.') + info.sw | |
| 554 else | |
| 555 return indent(s:GetMSL(line('.'))) | |
| 556 endif | |
| 557 else | |
| 558 call cursor(info.clnum, info.col) | |
| 559 end | |
| 560 endif | |
| 561 | |
| 562 return -1 | |
| 563 endfunction | |
| 564 | |
| 565 function! s:AfterEndKeyword(pline_info) abort | |
| 566 let info = a:pline_info | |
| 567 " If the previous line ended with an "end", match that "end"s beginning's | |
| 568 " indent. | |
| 569 let col = s:Match(info.plnum, '\%(^\|[^.:@$]\)\<end\>\s*\%(#.*\)\=$') | |
| 570 if col > 0 | |
| 571 call cursor(info.plnum, col) | |
| 572 if searchpair(s:end_start_regex, '', s:end_end_regex, 'bW', | |
| 573 \ s:end_skip_expr) > 0 | |
| 574 let n = line('.') | |
| 575 let ind = indent('.') | |
| 576 let msl = s:GetMSL(n) | |
| 577 if msl != n | |
| 578 let ind = indent(msl) | |
| 579 end | |
| 580 return ind | |
| 581 endif | |
| 582 end | |
| 583 return -1 | |
| 584 endfunction | |
| 585 | |
| 586 function! s:AfterIndentKeyword(pline_info) abort | |
| 587 let info = a:pline_info | |
| 588 let col = s:Match(info.plnum, s:ruby_indent_keywords) | |
| 589 | |
| 590 if col > 0 | |
| 591 call cursor(info.plnum, col) | |
| 592 let ind = virtcol('.') - 1 + info.sw | |
| 593 " TODO: make this better (we need to count them) (or, if a searchpair | |
| 594 " fails, we know that something is lacking an end and thus we indent a | |
| 595 " level | |
| 596 if s:Match(info.plnum, s:end_end_regex) | |
| 597 let ind = indent('.') | |
| 598 elseif s:IsAssignment(info.pline, col) | |
| 599 if g:ruby_indent_assignment_style == 'hanging' | |
| 600 " hanging indent | |
| 601 let ind = col + info.sw - 1 | |
| 602 else | |
| 603 " align with variable | |
| 604 let ind = indent(info.plnum) + info.sw | |
| 605 endif | |
| 606 endif | |
| 607 return ind | |
| 608 endif | |
| 609 | |
| 610 return -1 | |
| 611 endfunction | |
| 612 | |
| 613 function! s:PreviousNotMSL(msl_info) abort | |
| 614 let info = a:msl_info | |
| 615 | |
| 616 " If the previous line wasn't a MSL | |
| 617 if info.plnum != info.plnum_msl | |
| 618 " If previous line ends bracket and begins non-bracket continuation decrease indent by 1. | |
| 619 if s:Match(info.plnum, s:bracket_switch_continuation_regex) | |
| 620 " TODO (2016-10-07) Wrong/unused? How could it be "1"? | |
| 621 return indent(info.plnum) - 1 | |
| 622 " If previous line is a continuation return its indent. | |
| 623 " TODO: the || s:IsInString() thing worries me a bit. | |
| 624 elseif s:Match(info.plnum, s:non_bracket_continuation_regex) || s:IsInString(info.plnum, strlen(line)) | |
| 625 return indent(info.plnum) | |
| 626 endif | |
| 627 endif | |
| 628 | |
| 629 return -1 | |
| 630 endfunction | |
| 631 | |
| 632 function! s:IndentingKeywordInMSL(msl_info) abort | |
| 633 let info = a:msl_info | |
| 634 " If the MSL line had an indenting keyword in it, add a level of indent. | |
| 635 " TODO: this does not take into account contrived things such as | |
| 636 " module Foo; class Bar; end | |
| 637 let col = s:Match(info.plnum_msl, s:ruby_indent_keywords) | |
| 638 if col > 0 | |
| 639 let ind = indent(info.plnum_msl) + info.sw | |
| 640 if s:Match(info.plnum_msl, s:end_end_regex) | |
| 641 let ind = ind - info.sw | |
| 642 elseif s:IsAssignment(getline(info.plnum_msl), col) | |
| 643 if g:ruby_indent_assignment_style == 'hanging' | |
| 644 " hanging indent | |
| 645 let ind = col + info.sw - 1 | |
| 646 else | |
| 647 " align with variable | |
| 648 let ind = indent(info.plnum_msl) + info.sw | |
| 649 endif | |
| 650 endif | |
| 651 return ind | |
| 652 endif | |
| 653 return -1 | |
| 654 endfunction | |
| 655 | |
| 656 function! s:ContinuedHangingOperator(msl_info) abort | |
| 657 let info = a:msl_info | |
| 658 | |
| 659 " If the previous line ended with [*+/.,-=], but wasn't a block ending or a | |
| 660 " closing bracket, indent one extra level. | |
| 661 if s:Match(info.plnum_msl, s:non_bracket_continuation_regex) && !s:Match(info.plnum_msl, '^\s*\([\])}]\|end\)') | |
| 662 if info.plnum_msl == info.plnum | |
| 663 let ind = indent(info.plnum_msl) + info.sw | |
| 664 else | |
| 665 let ind = indent(info.plnum_msl) | |
| 666 endif | |
| 667 return ind | |
| 668 endif | |
| 669 | |
| 670 return -1 | |
| 671 endfunction | |
| 672 | |
| 673 " 4. Auxiliary Functions {{{1 | |
| 530 | 674 " ====================== |
| 675 | |
| 15512 | 676 function! s:IsInRubyGroup(groups, lnum, col) abort |
| 677 let ids = map(copy(a:groups), 'hlID("ruby".v:val)') | |
| 678 return index(ids, synID(a:lnum, a:col, 1)) >= 0 | |
| 679 endfunction | |
| 680 | |
| 530 | 681 " Check if the character at lnum:col is inside a string, comment, or is ascii. |
| 15512 | 682 function! s:IsInStringOrComment(lnum, col) abort |
| 683 return s:IsInRubyGroup(s:syng_strcom, a:lnum, a:col) | |
| 530 | 684 endfunction |
| 685 | |
| 686 " Check if the character at lnum:col is inside a string. | |
| 15512 | 687 function! s:IsInString(lnum, col) abort |
| 688 return s:IsInRubyGroup(s:syng_string, a:lnum, a:col) | |
| 530 | 689 endfunction |
| 690 | |
| 691 " Check if the character at lnum:col is inside a string or documentation. | |
| 15512 | 692 function! s:IsInStringOrDocumentation(lnum, col) abort |
| 693 return s:IsInRubyGroup(s:syng_stringdoc, a:lnum, a:col) | |
| 530 | 694 endfunction |
| 695 | |
| 4869 | 696 " Check if the character at lnum:col is inside a string delimiter |
| 15512 | 697 function! s:IsInStringDelimiter(lnum, col) abort |
| 698 return s:IsInRubyGroup(['StringDelimiter'], a:lnum, a:col) | |
| 699 endfunction | |
| 700 | |
| 701 function! s:IsAssignment(str, pos) abort | |
| 702 return strpart(a:str, 0, a:pos - 1) =~ '=\s*$' | |
| 4869 | 703 endfunction |
| 704 | |
| 530 | 705 " Find line above 'lnum' that isn't empty, in a comment, or in a string. |
| 15512 | 706 function! s:PrevNonBlankNonString(lnum) abort |
| 530 | 707 let in_block = 0 |
| 708 let lnum = prevnonblank(a:lnum) | |
| 709 while lnum > 0 | |
| 710 " Go in and out of blocks comments as necessary. | |
| 711 " If the line isn't empty (with opt. comment) or in a string, end search. | |
| 712 let line = getline(lnum) | |
| 4869 | 713 if line =~ '^=begin' |
| 530 | 714 if in_block |
| 4869 | 715 let in_block = 0 |
| 530 | 716 else |
| 4869 | 717 break |
| 530 | 718 endif |
| 4869 | 719 elseif !in_block && line =~ '^=end' |
| 530 | 720 let in_block = 1 |
| 721 elseif !in_block && line !~ '^\s*#.*$' && !(s:IsInStringOrComment(lnum, 1) | |
| 4869 | 722 \ && s:IsInStringOrComment(lnum, strlen(line))) |
| 530 | 723 break |
| 724 endif | |
| 725 let lnum = prevnonblank(lnum - 1) | |
| 726 endwhile | |
| 727 return lnum | |
| 728 endfunction | |
| 729 | |
| 730 " Find line above 'lnum' that started the continuation 'lnum' may be part of. | |
| 15512 | 731 function! s:GetMSL(lnum) abort |
| 530 | 732 " Start on the line we're at and use its indent. |
| 733 let msl = a:lnum | |
| 734 let lnum = s:PrevNonBlankNonString(a:lnum - 1) | |
| 735 while lnum > 0 | |
| 736 " If we have a continuation line, or we're in a string, use line as MSL. | |
| 737 " Otherwise, terminate search as we have found our MSL already. | |
| 738 let line = getline(lnum) | |
| 4869 | 739 |
|
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740 if !s:Match(msl, s:backslash_continuation_regex) && |
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741 \ s:Match(lnum, s:backslash_continuation_regex) |
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commit https://github.com/vim/vim/commit/89bcfda6834aba724d12554a34b9ed49f5789fd5
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742 " If the current line doesn't end in a backslash, but the previous one |
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commit https://github.com/vim/vim/commit/89bcfda6834aba724d12554a34b9ed49f5789fd5
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743 " does, look for that line's msl |
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commit https://github.com/vim/vim/commit/89bcfda6834aba724d12554a34b9ed49f5789fd5
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parents:
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744 " |
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43efa4f5a8ea
commit https://github.com/vim/vim/commit/89bcfda6834aba724d12554a34b9ed49f5789fd5
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parents:
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745 " Example: |
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commit https://github.com/vim/vim/commit/89bcfda6834aba724d12554a34b9ed49f5789fd5
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parents:
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746 " foo = "bar" \ |
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43efa4f5a8ea
commit https://github.com/vim/vim/commit/89bcfda6834aba724d12554a34b9ed49f5789fd5
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parents:
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747 " "baz" |
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commit https://github.com/vim/vim/commit/89bcfda6834aba724d12554a34b9ed49f5789fd5
Christian Brabandt <cb@256bit.org>
parents:
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748 " |
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commit https://github.com/vim/vim/commit/89bcfda6834aba724d12554a34b9ed49f5789fd5
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parents:
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749 let msl = lnum |
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commit https://github.com/vim/vim/commit/89bcfda6834aba724d12554a34b9ed49f5789fd5
Christian Brabandt <cb@256bit.org>
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750 elseif s:Match(msl, s:leading_operator_regex) |
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751 " If the current line starts with a leading operator, keep its indent |
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752 " and keep looking for an MSL. |
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753 let msl = lnum |
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754 elseif s:Match(lnum, s:splat_regex) |
| 4869 | 755 " If the above line looks like the "*" of a splat, use the current one's |
| 756 " indentation. | |
| 757 " | |
| 758 " Example: | |
| 759 " Hash[* | |
| 760 " method_call do | |
| 761 " something | |
| 762 " | |
| 763 return msl | |
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764 elseif s:Match(lnum, s:non_bracket_continuation_regex) && |
| 4869 | 765 \ s:Match(msl, s:non_bracket_continuation_regex) |
| 766 " If the current line is a non-bracket continuation and so is the | |
| 767 " previous one, keep its indent and continue looking for an MSL. | |
| 768 " | |
| 769 " Example: | |
| 770 " method_call one, | |
| 771 " two, | |
| 772 " three | |
| 773 " | |
| 530 | 774 let msl = lnum |
|
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775 elseif s:Match(lnum, s:dot_continuation_regex) && |
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776 \ (s:Match(msl, s:bracket_continuation_regex) || s:Match(msl, s:block_continuation_regex)) |
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777 " If the current line is a bracket continuation or a block-starter, but |
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778 " the previous is a dot, keep going to see if the previous line is the |
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779 " start of another continuation. |
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780 " |
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781 " Example: |
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782 " parent. |
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783 " method_call { |
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784 " three |
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785 " |
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786 let msl = lnum |
| 4869 | 787 elseif s:Match(lnum, s:non_bracket_continuation_regex) && |
| 788 \ (s:Match(msl, s:bracket_continuation_regex) || s:Match(msl, s:block_continuation_regex)) | |
| 789 " If the current line is a bracket continuation or a block-starter, but | |
| 790 " the previous is a non-bracket one, respect the previous' indentation, | |
| 791 " and stop here. | |
| 792 " | |
| 793 " Example: | |
| 794 " method_call one, | |
| 795 " two { | |
| 796 " three | |
| 797 " | |
| 798 return lnum | |
| 799 elseif s:Match(lnum, s:bracket_continuation_regex) && | |
| 800 \ (s:Match(msl, s:bracket_continuation_regex) || s:Match(msl, s:block_continuation_regex)) | |
| 801 " If both lines are bracket continuations (the current may also be a | |
| 802 " block-starter), use the current one's and stop here | |
| 803 " | |
| 804 " Example: | |
| 805 " method_call( | |
| 806 " other_method_call( | |
| 807 " foo | |
| 808 return msl | |
| 809 elseif s:Match(lnum, s:block_regex) && | |
| 810 \ !s:Match(msl, s:continuation_regex) && | |
| 811 \ !s:Match(msl, s:block_continuation_regex) | |
| 812 " If the previous line is a block-starter and the current one is | |
| 813 " mostly ordinary, use the current one as the MSL. | |
| 814 " | |
| 815 " Example: | |
| 816 " method_call do | |
| 817 " something | |
| 818 " something_else | |
| 819 return msl | |
| 530 | 820 else |
| 4869 | 821 let col = match(line, s:continuation_regex) + 1 |
| 822 if (col > 0 && !s:IsInStringOrComment(lnum, col)) | |
| 823 \ || s:IsInString(lnum, strlen(line)) | |
| 824 let msl = lnum | |
| 825 else | |
| 826 break | |
| 827 endif | |
| 530 | 828 endif |
| 4869 | 829 |
| 530 | 830 let lnum = s:PrevNonBlankNonString(lnum - 1) |
| 831 endwhile | |
| 832 return msl | |
| 833 endfunction | |
| 834 | |
| 835 " Check if line 'lnum' has more opening brackets than closing ones. | |
| 15512 | 836 function! s:ExtraBrackets(lnum) abort |
| 4869 | 837 let opening = {'parentheses': [], 'braces': [], 'brackets': []} |
| 838 let closing = {'parentheses': [], 'braces': [], 'brackets': []} | |
| 839 | |
| 530 | 840 let line = getline(a:lnum) |
| 4869 | 841 let pos = match(line, '[][(){}]', 0) |
| 842 | |
| 843 " Save any encountered opening brackets, and remove them once a matching | |
| 844 " closing one has been found. If a closing bracket shows up that doesn't | |
| 845 " close anything, save it for later. | |
| 530 | 846 while pos != -1 |
| 847 if !s:IsInStringOrComment(a:lnum, pos + 1) | |
| 4869 | 848 if line[pos] == '(' |
| 849 call add(opening.parentheses, {'type': '(', 'pos': pos}) | |
| 850 elseif line[pos] == ')' | |
| 851 if empty(opening.parentheses) | |
| 852 call add(closing.parentheses, {'type': ')', 'pos': pos}) | |
| 853 else | |
| 854 let opening.parentheses = opening.parentheses[0:-2] | |
| 855 endif | |
| 856 elseif line[pos] == '{' | |
| 857 call add(opening.braces, {'type': '{', 'pos': pos}) | |
| 858 elseif line[pos] == '}' | |
| 859 if empty(opening.braces) | |
| 860 call add(closing.braces, {'type': '}', 'pos': pos}) | |
| 861 else | |
| 862 let opening.braces = opening.braces[0:-2] | |
| 863 endif | |
| 864 elseif line[pos] == '[' | |
| 865 call add(opening.brackets, {'type': '[', 'pos': pos}) | |
| 866 elseif line[pos] == ']' | |
| 867 if empty(opening.brackets) | |
| 868 call add(closing.brackets, {'type': ']', 'pos': pos}) | |
| 869 else | |
| 870 let opening.brackets = opening.brackets[0:-2] | |
| 871 endif | |
| 530 | 872 endif |
| 873 endif | |
| 4869 | 874 |
| 530 | 875 let pos = match(line, '[][(){}]', pos + 1) |
| 876 endwhile | |
| 4869 | 877 |
| 878 " Find the rightmost brackets, since they're the ones that are important in | |
| 879 " both opening and closing cases | |
| 880 let rightmost_opening = {'type': '(', 'pos': -1} | |
| 881 let rightmost_closing = {'type': ')', 'pos': -1} | |
| 882 | |
| 883 for opening in opening.parentheses + opening.braces + opening.brackets | |
| 884 if opening.pos > rightmost_opening.pos | |
| 885 let rightmost_opening = opening | |
| 886 endif | |
| 887 endfor | |
| 888 | |
| 889 for closing in closing.parentheses + closing.braces + closing.brackets | |
| 890 if closing.pos > rightmost_closing.pos | |
| 891 let rightmost_closing = closing | |
| 892 endif | |
| 893 endfor | |
| 894 | |
| 895 return [rightmost_opening, rightmost_closing] | |
| 530 | 896 endfunction |
| 897 | |
| 15512 | 898 function! s:Match(lnum, regex) abort |
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899 let line = getline(a:lnum) |
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900 let offset = match(line, '\C'.a:regex) |
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901 let col = offset + 1 |
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902 |
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903 while offset > -1 && s:IsInStringOrComment(a:lnum, col) |
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904 let offset = match(line, '\C'.a:regex, offset + 1) |
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905 let col = offset + 1 |
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906 endwhile |
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907 |
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908 if offset > -1 |
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909 return col |
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910 else |
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911 return 0 |
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912 endif |
| 530 | 913 endfunction |
| 914 | |
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915 " Locates the containing class/module's definition line, ignoring nested classes |
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916 " along the way. |
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917 " |
| 15512 | 918 function! s:FindContainingClass() abort |
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919 let saved_position = getpos('.') |
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920 |
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921 while searchpair(s:end_start_regex, s:end_middle_regex, s:end_end_regex, 'bW', |
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922 \ s:end_skip_expr) > 0 |
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923 if expand('<cword>') =~# '\<class\|module\>' |
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924 let found_lnum = line('.') |
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925 call setpos('.', saved_position) |
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926 return found_lnum |
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927 endif |
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928 endwhile |
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929 |
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930 call setpos('.', saved_position) |
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931 return 0 |
| 530 | 932 endfunction |
| 933 | |
| 934 " }}}1 | |
| 935 | |
| 936 let &cpo = s:cpo_save | |
| 937 unlet s:cpo_save | |
| 1121 | 938 |
| 4869 | 939 " vim:set sw=2 sts=2 ts=8 et: |