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annotate runtime/indent/ruby.vim @ 19782:e5f4316b01dd
Added tag v8.2.0447 for changeset cadb4c1bee6e0cedbb300b83477d648f432afe7a
| author | Bram Moolenaar <Bram@vim.org> |
|---|---|
| date | Wed, 25 Mar 2020 21:30:05 +0100 |
| parents | 70ce979e76bc |
| children | 5b37a0bf7e3a |
| 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> |
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7 " Last Change: 2019 Dec 08 |
| 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 = | |
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54 \ ['String', 'Interpolation', 'InterpolationDelimiter', '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. |
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60 let s:syng_strcom = s:syng_stringdoc + [ |
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61 \ 'Character', |
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62 \ 'Comment', |
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63 \ 'HeredocDelimiter', |
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64 \ 'PercentRegexpDelimiter', |
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65 \ 'PercentStringDelimiter', |
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66 \ 'PercentSymbolDelimiter', |
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67 \ 'Regexp', |
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68 \ 'RegexpCharClass', |
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69 \ 'RegexpDelimiter', |
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70 \ 'RegexpEscape', |
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71 \ 'StringDelimiter', |
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72 \ 'Symbol', |
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73 \ 'SymbolDelimiter', |
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74 \ ] |
| 530 | 75 |
| 76 " Expression used to check whether we should skip a match with searchpair(). | |
| 77 let s:skip_expr = | |
| 15512 | 78 \ 'index(map('.string(s:syng_strcom).',"hlID(''ruby''.v:val)"), synID(line("."),col("."),1)) >= 0' |
| 530 | 79 |
| 80 " Regex used for words that, at the start of a line, add a level of indent. | |
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81 let s:ruby_indent_keywords = |
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82 \ '^\s*\zs\<\%(module\|class\|if\|for' . |
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83 \ '\|while\|until\|else\|elsif\|case\|when\|unless\|begin\|ensure\|rescue' . |
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84 \ '\|\%(\K\k*[!?]\?\s\+\)\=def\):\@!\>' . |
| 4869 | 85 \ '\|\%([=,*/%+-]\|<<\|>>\|:\s\)\s*\zs' . |
| 86 \ '\<\%(if\|for\|while\|until\|case\|unless\|begin\):\@!\>' | |
| 530 | 87 |
| 88 " Regex used for words that, at the start of a line, remove a level of indent. | |
| 89 let s:ruby_deindent_keywords = | |
| 4869 | 90 \ '^\s*\zs\<\%(ensure\|else\|rescue\|elsif\|when\|end\):\@!\>' |
| 530 | 91 |
| 92 " Regex that defines the start-match for the 'end' keyword. | |
| 93 "let s:end_start_regex = '\%(^\|[^.]\)\<\%(module\|class\|def\|if\|for\|while\|until\|case\|unless\|begin\|do\)\>' | |
| 94 " TODO: the do here should be restricted somewhat (only at end of line)? | |
| 4869 | 95 let s:end_start_regex = |
| 96 \ '\C\%(^\s*\|[=,*/%+\-|;{]\|<<\|>>\|:\s\)\s*\zs' . | |
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97 \ '\<\%(module\|class\|if\|for\|while\|until\|case\|unless\|begin' . |
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98 \ '\|\%(\K\k*[!?]\?\s\+\)\=def\):\@!\>' . |
| 4869 | 99 \ '\|\%(^\|[^.:@$]\)\@<=\<do:\@!\>' |
| 530 | 100 |
| 101 " Regex that defines the middle-match for the 'end' keyword. | |
| 4869 | 102 let s:end_middle_regex = '\<\%(ensure\|else\|\%(\%(^\|;\)\s*\)\@<=\<rescue:\@!\>\|when\|elsif\):\@!\>' |
| 530 | 103 |
| 104 " Regex that defines the end-match for the 'end' keyword. | |
| 4869 | 105 let s:end_end_regex = '\%(^\|[^.:@$]\)\@<=\<end:\@!\>' |
| 530 | 106 |
| 107 " Expression used for searchpair() call for finding match for 'end' keyword. | |
| 108 let s:end_skip_expr = s:skip_expr . | |
| 109 \ ' || (expand("<cword>") == "do"' . | |
| 4869 | 110 \ ' && getline(".") =~ "^\\s*\\<\\(while\\|until\\|for\\):\\@!\\>")' |
| 530 | 111 |
| 112 " Regex that defines continuation lines, not including (, {, or [. | |
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113 let s:non_bracket_continuation_regex = |
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114 \ '\%([\\.,:*/%+]\|\<and\|\<or\|\%(<%\)\@<![=-]\|:\@<![^[:alnum:]:][|&?]\|||\|&&\)\s*\%(#.*\)\=$' |
| 530 | 115 |
| 116 " Regex that defines continuation lines. | |
| 4869 | 117 let s:continuation_regex = |
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118 \ '\%(%\@<![({[\\.,:*/%+]\|\<and\|\<or\|\%(<%\)\@<![=-]\|:\@<![^[:alnum:]:][|&?]\|||\|&&\)\s*\%(#.*\)\=$' |
| 4869 | 119 |
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120 " Regex that defines continuable keywords |
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121 let s:continuable_regex = |
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122 \ '\C\%(^\s*\|[=,*/%+\-|;{]\|<<\|>>\|:\s\)\s*\zs' . |
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123 \ '\<\%(if\|for\|while\|until\|unless\):\@!\>' |
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124 |
| 4869 | 125 " Regex that defines bracket continuations |
| 126 let s:bracket_continuation_regex = '%\@<!\%([({[]\)\s*\%(#.*\)\=$' | |
| 127 | |
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128 " Regex that defines dot continuations |
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129 let s:dot_continuation_regex = '%\@<!\.\s*\%(#.*\)\=$' |
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130 |
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131 " Regex that defines backslash continuations |
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132 let s:backslash_continuation_regex = '%\@<!\\\s*$' |
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133 |
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134 " Regex that defines end of bracket continuation followed by another continuation |
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135 let s:bracket_switch_continuation_regex = '^\([^(]\+\zs).\+\)\+'.s:continuation_regex |
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136 |
| 4869 | 137 " Regex that defines the first part of a splat pattern |
| 138 let s:splat_regex = '[[,(]\s*\*\s*\%(#.*\)\=$' | |
| 530 | 139 |
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140 " Regex that describes all indent access modifiers |
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141 let s:access_modifier_regex = '\C^\s*\%(public\|protected\|private\)\s*\%(#.*\)\=$' |
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142 |
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143 " Regex that describes the indent access modifiers (excludes public) |
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144 let s:indent_access_modifier_regex = '\C^\s*\%(protected\|private\)\s*\%(#.*\)\=$' |
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145 |
| 530 | 146 " Regex that defines blocks. |
| 4869 | 147 " |
| 148 " Note that there's a slight problem with this regex and s:continuation_regex. | |
| 149 " Code like this will be matched by both: | |
| 150 " | |
| 151 " method_call do |(a, b)| | |
| 152 " | |
| 153 " The reason is that the pipe matches a hanging "|" operator. | |
| 154 " | |
| 530 | 155 let s:block_regex = |
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156 \ '\%(\<do:\@!\>\|%\@<!{\)\s*\%(|[^|]*|\)\=\s*\%(#.*\)\=$' |
| 4869 | 157 |
| 158 let s:block_continuation_regex = '^\s*[^])}\t ].*'.s:block_regex | |
| 530 | 159 |
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160 " Regex that describes a leading operator (only a method call's dot for now) |
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161 let s:leading_operator_regex = '^\s*\%(&\=\.\)' |
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162 |
| 15512 | 163 " 2. GetRubyIndent Function {{{1 |
| 164 " ========================= | |
| 165 | |
| 166 function! GetRubyIndent(...) abort | |
| 167 " 2.1. Setup {{{2 | |
| 168 " ---------- | |
| 169 | |
| 170 let indent_info = {} | |
| 171 | |
| 172 " The value of a single shift-width | |
| 173 if exists('*shiftwidth') | |
| 174 let indent_info.sw = shiftwidth() | |
| 175 else | |
| 176 let indent_info.sw = &sw | |
| 177 endif | |
| 178 | |
| 179 " For the current line, use the first argument if given, else v:lnum | |
| 180 let indent_info.clnum = a:0 ? a:1 : v:lnum | |
| 181 let indent_info.cline = getline(indent_info.clnum) | |
| 182 | |
| 183 " Set up variables for restoring position in file. Could use clnum here. | |
| 184 let indent_info.col = col('.') | |
| 185 | |
| 186 " 2.2. Work on the current line {{{2 | |
| 187 " ----------------------------- | |
| 188 let indent_callback_names = [ | |
| 189 \ 's:AccessModifier', | |
| 190 \ 's:ClosingBracketOnEmptyLine', | |
| 191 \ 's:BlockComment', | |
| 192 \ 's:DeindentingKeyword', | |
| 193 \ 's:MultilineStringOrLineComment', | |
| 194 \ 's:ClosingHeredocDelimiter', | |
| 195 \ 's:LeadingOperator', | |
| 196 \ ] | |
| 197 | |
| 198 for callback_name in indent_callback_names | |
| 199 " Decho "Running: ".callback_name | |
| 200 let indent = call(function(callback_name), [indent_info]) | |
| 201 | |
| 202 if indent >= 0 | |
| 203 " Decho "Match: ".callback_name." indent=".indent." info=".string(indent_info) | |
| 204 return indent | |
| 205 endif | |
| 206 endfor | |
| 207 | |
| 208 " 2.3. Work on the previous line. {{{2 | |
| 209 " ------------------------------- | |
| 210 | |
| 211 " Special case: we don't need the real s:PrevNonBlankNonString for an empty | |
| 212 " line inside a string. And that call can be quite expensive in that | |
| 213 " particular situation. | |
| 214 let indent_callback_names = [ | |
| 215 \ 's:EmptyInsideString', | |
| 216 \ ] | |
| 217 | |
| 218 for callback_name in indent_callback_names | |
| 219 " Decho "Running: ".callback_name | |
| 220 let indent = call(function(callback_name), [indent_info]) | |
| 221 | |
| 222 if indent >= 0 | |
| 223 " Decho "Match: ".callback_name." indent=".indent." info=".string(indent_info) | |
| 224 return indent | |
| 225 endif | |
| 226 endfor | |
| 227 | |
| 228 " Previous line number | |
| 229 let indent_info.plnum = s:PrevNonBlankNonString(indent_info.clnum - 1) | |
| 230 let indent_info.pline = getline(indent_info.plnum) | |
| 231 | |
| 232 let indent_callback_names = [ | |
| 233 \ 's:StartOfFile', | |
| 234 \ 's:AfterAccessModifier', | |
| 235 \ 's:ContinuedLine', | |
| 236 \ 's:AfterBlockOpening', | |
| 237 \ 's:AfterHangingSplat', | |
| 238 \ 's:AfterUnbalancedBracket', | |
| 239 \ 's:AfterLeadingOperator', | |
| 240 \ 's:AfterEndKeyword', | |
| 241 \ 's:AfterIndentKeyword', | |
| 242 \ ] | |
| 243 | |
| 244 for callback_name in indent_callback_names | |
| 245 " Decho "Running: ".callback_name | |
| 246 let indent = call(function(callback_name), [indent_info]) | |
| 247 | |
| 248 if indent >= 0 | |
| 249 " Decho "Match: ".callback_name." indent=".indent." info=".string(indent_info) | |
| 250 return indent | |
| 251 endif | |
| 252 endfor | |
| 253 | |
| 254 " 2.4. Work on the MSL line. {{{2 | |
| 255 " -------------------------- | |
| 256 let indent_callback_names = [ | |
| 257 \ 's:PreviousNotMSL', | |
| 258 \ 's:IndentingKeywordInMSL', | |
| 259 \ 's:ContinuedHangingOperator', | |
| 260 \ ] | |
| 261 | |
| 262 " Most Significant line based on the previous one -- in case it's a | |
| 263 " contination of something above | |
| 264 let indent_info.plnum_msl = s:GetMSL(indent_info.plnum) | |
| 265 | |
| 266 for callback_name in indent_callback_names | |
| 267 " Decho "Running: ".callback_name | |
| 268 let indent = call(function(callback_name), [indent_info]) | |
| 269 | |
| 270 if indent >= 0 | |
| 271 " Decho "Match: ".callback_name." indent=".indent." info=".string(indent_info) | |
| 272 return indent | |
| 273 endif | |
| 274 endfor | |
| 275 | |
| 276 " }}}2 | |
| 277 | |
| 278 " By default, just return the previous line's indent | |
| 279 " Decho "Default case matched" | |
| 280 return indent(indent_info.plnum) | |
| 281 endfunction | |
| 282 | |
| 283 " 3. Indenting Logic Callbacks {{{1 | |
| 284 " ============================ | |
| 285 | |
| 286 function! s:AccessModifier(cline_info) abort | |
| 287 let info = a:cline_info | |
| 288 | |
| 289 " If this line is an access modifier keyword, align according to the closest | |
| 290 " class declaration. | |
| 291 if g:ruby_indent_access_modifier_style == 'indent' | |
| 292 if s:Match(info.clnum, s:access_modifier_regex) | |
| 293 let class_lnum = s:FindContainingClass() | |
| 294 if class_lnum > 0 | |
| 295 return indent(class_lnum) + info.sw | |
| 296 endif | |
| 297 endif | |
| 298 elseif g:ruby_indent_access_modifier_style == 'outdent' | |
| 299 if s:Match(info.clnum, s:access_modifier_regex) | |
| 300 let class_lnum = s:FindContainingClass() | |
| 301 if class_lnum > 0 | |
| 302 return indent(class_lnum) | |
| 303 endif | |
| 304 endif | |
| 305 endif | |
| 306 | |
| 307 return -1 | |
| 308 endfunction | |
| 309 | |
| 310 function! s:ClosingBracketOnEmptyLine(cline_info) abort | |
| 311 let info = a:cline_info | |
| 312 | |
| 313 " If we got a closing bracket on an empty line, find its match and indent | |
| 314 " according to it. For parentheses we indent to its column - 1, for the | |
| 315 " others we indent to the containing line's MSL's level. Return -1 if fail. | |
| 316 let col = matchend(info.cline, '^\s*[]})]') | |
| 317 | |
| 318 if col > 0 && !s:IsInStringOrComment(info.clnum, col) | |
| 319 call cursor(info.clnum, col) | |
| 320 let closing_bracket = info.cline[col - 1] | |
| 321 let bracket_pair = strpart('(){}[]', stridx(')}]', closing_bracket) * 2, 2) | |
| 322 | |
| 323 if searchpair(escape(bracket_pair[0], '\['), '', bracket_pair[1], 'bW', s:skip_expr) > 0 | |
| 324 if closing_bracket == ')' && col('.') != col('$') - 1 | |
| 325 let ind = virtcol('.') - 1 | |
| 326 elseif g:ruby_indent_block_style == 'do' | |
| 327 let ind = indent(line('.')) | |
| 328 else " g:ruby_indent_block_style == 'expression' | |
| 329 let ind = indent(s:GetMSL(line('.'))) | |
| 330 endif | |
| 331 endif | |
| 332 | |
| 333 return ind | |
| 334 endif | |
| 335 | |
| 336 return -1 | |
| 337 endfunction | |
| 338 | |
| 339 function! s:BlockComment(cline_info) abort | |
| 340 " If we have a =begin or =end set indent to first column. | |
| 341 if match(a:cline_info.cline, '^\s*\%(=begin\|=end\)$') != -1 | |
| 342 return 0 | |
| 343 endif | |
| 344 return -1 | |
| 345 endfunction | |
| 346 | |
| 347 function! s:DeindentingKeyword(cline_info) abort | |
| 348 let info = a:cline_info | |
| 349 | |
| 350 " If we have a deindenting keyword, find its match and indent to its level. | |
| 351 " TODO: this is messy | |
| 352 if s:Match(info.clnum, s:ruby_deindent_keywords) | |
| 353 call cursor(info.clnum, 1) | |
| 354 | |
| 355 if searchpair(s:end_start_regex, s:end_middle_regex, s:end_end_regex, 'bW', | |
| 356 \ s:end_skip_expr) > 0 | |
| 357 let msl = s:GetMSL(line('.')) | |
| 358 let line = getline(line('.')) | |
| 359 | |
| 360 if s:IsAssignment(line, col('.')) && | |
| 361 \ strpart(line, col('.') - 1, 2) !~ 'do' | |
| 362 " assignment to case/begin/etc, on the same line | |
| 363 if g:ruby_indent_assignment_style == 'hanging' | |
| 364 " hanging indent | |
| 365 let ind = virtcol('.') - 1 | |
| 366 else | |
| 367 " align with variable | |
| 368 let ind = indent(line('.')) | |
| 369 endif | |
| 370 elseif g:ruby_indent_block_style == 'do' | |
| 371 " align to line of the "do", not to the MSL | |
| 372 let ind = indent(line('.')) | |
| 373 elseif getline(msl) =~ '=\s*\(#.*\)\=$' | |
| 374 " in the case of assignment to the MSL, align to the starting line, | |
| 375 " not to the MSL | |
| 376 let ind = indent(line('.')) | |
| 377 else | |
| 378 " align to the MSL | |
| 379 let ind = indent(msl) | |
| 380 endif | |
| 381 endif | |
| 382 return ind | |
| 383 endif | |
| 384 | |
| 385 return -1 | |
| 386 endfunction | |
| 387 | |
| 388 function! s:MultilineStringOrLineComment(cline_info) abort | |
| 389 let info = a:cline_info | |
| 390 | |
| 391 " If we are in a multi-line string or line-comment, don't do anything to it. | |
| 392 if s:IsInStringOrDocumentation(info.clnum, matchend(info.cline, '^\s*') + 1) | |
| 393 return indent(info.clnum) | |
| 394 endif | |
| 395 return -1 | |
| 396 endfunction | |
| 397 | |
| 398 function! s:ClosingHeredocDelimiter(cline_info) abort | |
| 399 let info = a:cline_info | |
| 400 | |
| 401 " If we are at the closing delimiter of a "<<" heredoc-style string, set the | |
| 402 " indent to 0. | |
| 403 if info.cline =~ '^\k\+\s*$' | |
| 404 \ && s:IsInStringDelimiter(info.clnum, 1) | |
| 405 \ && search('\V<<'.info.cline, 'nbW') > 0 | |
| 406 return 0 | |
| 407 endif | |
| 408 | |
| 409 return -1 | |
| 410 endfunction | |
| 411 | |
| 412 function! s:LeadingOperator(cline_info) abort | |
| 413 " If the current line starts with a leading operator, add a level of indent. | |
| 414 if s:Match(a:cline_info.clnum, s:leading_operator_regex) | |
| 415 return indent(s:GetMSL(a:cline_info.clnum)) + a:cline_info.sw | |
| 416 endif | |
| 417 return -1 | |
| 418 endfunction | |
| 419 | |
| 420 function! s:EmptyInsideString(pline_info) abort | |
| 421 " If the line is empty and inside a string (the previous line is a string, | |
| 422 " too), use the previous line's indent | |
| 423 let info = a:pline_info | |
| 424 | |
| 425 let plnum = prevnonblank(info.clnum - 1) | |
| 426 let pline = getline(plnum) | |
| 427 | |
| 428 if info.cline =~ '^\s*$' | |
| 429 \ && s:IsInStringOrComment(plnum, 1) | |
| 430 \ && s:IsInStringOrComment(plnum, strlen(pline)) | |
| 431 return indent(plnum) | |
| 432 endif | |
| 433 return -1 | |
| 434 endfunction | |
| 435 | |
| 436 function! s:StartOfFile(pline_info) abort | |
| 437 " At the start of the file use zero indent. | |
| 438 if a:pline_info.plnum == 0 | |
| 439 return 0 | |
| 440 endif | |
| 441 return -1 | |
| 442 endfunction | |
| 443 | |
| 444 function! s:AfterAccessModifier(pline_info) abort | |
| 445 let info = a:pline_info | |
| 446 | |
| 447 if g:ruby_indent_access_modifier_style == 'indent' | |
| 448 " If the previous line was a private/protected keyword, add a | |
| 449 " level of indent. | |
| 450 if s:Match(info.plnum, s:indent_access_modifier_regex) | |
| 451 return indent(info.plnum) + info.sw | |
| 452 endif | |
| 453 elseif g:ruby_indent_access_modifier_style == 'outdent' | |
| 454 " If the previous line was a private/protected/public keyword, add | |
| 455 " a level of indent, since the keyword has been out-dented. | |
| 456 if s:Match(info.plnum, s:access_modifier_regex) | |
| 457 return indent(info.plnum) + info.sw | |
| 458 endif | |
| 459 endif | |
| 460 return -1 | |
| 461 endfunction | |
| 462 | |
| 463 " Example: | |
| 464 " | |
| 465 " if foo || bar || | |
| 466 " baz || bing | |
| 467 " puts "foo" | |
| 468 " end | |
| 469 " | |
| 470 function! s:ContinuedLine(pline_info) abort | |
| 471 let info = a:pline_info | |
| 472 | |
| 473 let col = s:Match(info.plnum, s:ruby_indent_keywords) | |
| 474 if s:Match(info.plnum, s:continuable_regex) && | |
| 475 \ s:Match(info.plnum, s:continuation_regex) | |
| 476 if col > 0 && s:IsAssignment(info.pline, col) | |
| 477 if g:ruby_indent_assignment_style == 'hanging' | |
| 478 " hanging indent | |
| 479 let ind = col - 1 | |
| 480 else | |
| 481 " align with variable | |
| 482 let ind = indent(info.plnum) | |
| 483 endif | |
| 484 else | |
| 485 let ind = indent(s:GetMSL(info.plnum)) | |
| 486 endif | |
| 487 return ind + info.sw + info.sw | |
| 488 endif | |
| 489 return -1 | |
| 490 endfunction | |
| 491 | |
| 492 function! s:AfterBlockOpening(pline_info) abort | |
| 493 let info = a:pline_info | |
| 494 | |
| 495 " If the previous line ended with a block opening, add a level of indent. | |
| 496 if s:Match(info.plnum, s:block_regex) | |
| 497 if g:ruby_indent_block_style == 'do' | |
| 498 " don't align to the msl, align to the "do" | |
| 499 let ind = indent(info.plnum) + info.sw | |
| 500 else | |
| 501 let plnum_msl = s:GetMSL(info.plnum) | |
| 502 | |
| 503 if getline(plnum_msl) =~ '=\s*\(#.*\)\=$' | |
| 504 " in the case of assignment to the msl, align to the starting line, | |
| 505 " not to the msl | |
| 506 let ind = indent(info.plnum) + info.sw | |
| 507 else | |
| 508 let ind = indent(plnum_msl) + info.sw | |
| 509 endif | |
| 510 endif | |
| 511 | |
| 512 return ind | |
| 513 endif | |
| 514 | |
| 515 return -1 | |
| 516 endfunction | |
| 517 | |
| 518 function! s:AfterLeadingOperator(pline_info) abort | |
| 519 " If the previous line started with a leading operator, use its MSL's level | |
| 520 " of indent | |
| 521 if s:Match(a:pline_info.plnum, s:leading_operator_regex) | |
| 522 return indent(s:GetMSL(a:pline_info.plnum)) | |
| 523 endif | |
| 524 return -1 | |
| 525 endfunction | |
| 526 | |
| 527 function! s:AfterHangingSplat(pline_info) abort | |
| 528 let info = a:pline_info | |
| 529 | |
| 530 " If the previous line ended with the "*" of a splat, add a level of indent | |
| 531 if info.pline =~ s:splat_regex | |
| 532 return indent(info.plnum) + info.sw | |
| 533 endif | |
| 534 return -1 | |
| 535 endfunction | |
| 536 | |
| 537 function! s:AfterUnbalancedBracket(pline_info) abort | |
| 538 let info = a:pline_info | |
| 539 | |
| 540 " If the previous line contained unclosed opening brackets and we are still | |
| 541 " in them, find the rightmost one and add indent depending on the bracket | |
| 542 " type. | |
| 543 " | |
| 544 " If it contained hanging closing brackets, find the rightmost one, find its | |
| 545 " match and indent according to that. | |
| 546 if info.pline =~ '[[({]' || info.pline =~ '[])}]\s*\%(#.*\)\=$' | |
| 547 let [opening, closing] = s:ExtraBrackets(info.plnum) | |
| 548 | |
| 549 if opening.pos != -1 | |
| 550 if opening.type == '(' && searchpair('(', '', ')', 'bW', s:skip_expr) > 0 | |
| 551 if col('.') + 1 == col('$') | |
| 552 return indent(info.plnum) + info.sw | |
| 553 else | |
| 554 return virtcol('.') | |
| 555 endif | |
| 556 else | |
| 557 let nonspace = matchend(info.pline, '\S', opening.pos + 1) - 1 | |
| 558 return nonspace > 0 ? nonspace : indent(info.plnum) + info.sw | |
| 559 endif | |
| 560 elseif closing.pos != -1 | |
| 561 call cursor(info.plnum, closing.pos + 1) | |
| 562 normal! % | |
| 563 | |
| 564 if s:Match(line('.'), s:ruby_indent_keywords) | |
| 565 return indent('.') + info.sw | |
| 566 else | |
| 567 return indent(s:GetMSL(line('.'))) | |
| 568 endif | |
| 569 else | |
| 570 call cursor(info.clnum, info.col) | |
| 571 end | |
| 572 endif | |
| 573 | |
| 574 return -1 | |
| 575 endfunction | |
| 576 | |
| 577 function! s:AfterEndKeyword(pline_info) abort | |
| 578 let info = a:pline_info | |
| 579 " If the previous line ended with an "end", match that "end"s beginning's | |
| 580 " indent. | |
| 581 let col = s:Match(info.plnum, '\%(^\|[^.:@$]\)\<end\>\s*\%(#.*\)\=$') | |
| 582 if col > 0 | |
| 583 call cursor(info.plnum, col) | |
| 584 if searchpair(s:end_start_regex, '', s:end_end_regex, 'bW', | |
| 585 \ s:end_skip_expr) > 0 | |
| 586 let n = line('.') | |
| 587 let ind = indent('.') | |
| 588 let msl = s:GetMSL(n) | |
| 589 if msl != n | |
| 590 let ind = indent(msl) | |
| 591 end | |
| 592 return ind | |
| 593 endif | |
| 594 end | |
| 595 return -1 | |
| 596 endfunction | |
| 597 | |
| 598 function! s:AfterIndentKeyword(pline_info) abort | |
| 599 let info = a:pline_info | |
| 600 let col = s:Match(info.plnum, s:ruby_indent_keywords) | |
| 601 | |
| 602 if col > 0 | |
| 603 call cursor(info.plnum, col) | |
| 604 let ind = virtcol('.') - 1 + info.sw | |
| 605 " TODO: make this better (we need to count them) (or, if a searchpair | |
| 606 " fails, we know that something is lacking an end and thus we indent a | |
| 607 " level | |
| 608 if s:Match(info.plnum, s:end_end_regex) | |
| 609 let ind = indent('.') | |
| 610 elseif s:IsAssignment(info.pline, col) | |
| 611 if g:ruby_indent_assignment_style == 'hanging' | |
| 612 " hanging indent | |
| 613 let ind = col + info.sw - 1 | |
| 614 else | |
| 615 " align with variable | |
| 616 let ind = indent(info.plnum) + info.sw | |
| 617 endif | |
| 618 endif | |
| 619 return ind | |
| 620 endif | |
| 621 | |
| 622 return -1 | |
| 623 endfunction | |
| 624 | |
| 625 function! s:PreviousNotMSL(msl_info) abort | |
| 626 let info = a:msl_info | |
| 627 | |
| 628 " If the previous line wasn't a MSL | |
| 629 if info.plnum != info.plnum_msl | |
| 630 " If previous line ends bracket and begins non-bracket continuation decrease indent by 1. | |
| 631 if s:Match(info.plnum, s:bracket_switch_continuation_regex) | |
| 632 " TODO (2016-10-07) Wrong/unused? How could it be "1"? | |
| 633 return indent(info.plnum) - 1 | |
| 634 " If previous line is a continuation return its indent. | |
| 635 " TODO: the || s:IsInString() thing worries me a bit. | |
| 636 elseif s:Match(info.plnum, s:non_bracket_continuation_regex) || s:IsInString(info.plnum, strlen(line)) | |
| 637 return indent(info.plnum) | |
| 638 endif | |
| 639 endif | |
| 640 | |
| 641 return -1 | |
| 642 endfunction | |
| 643 | |
| 644 function! s:IndentingKeywordInMSL(msl_info) abort | |
| 645 let info = a:msl_info | |
| 646 " If the MSL line had an indenting keyword in it, add a level of indent. | |
| 647 " TODO: this does not take into account contrived things such as | |
| 648 " module Foo; class Bar; end | |
| 649 let col = s:Match(info.plnum_msl, s:ruby_indent_keywords) | |
| 650 if col > 0 | |
| 651 let ind = indent(info.plnum_msl) + info.sw | |
| 652 if s:Match(info.plnum_msl, s:end_end_regex) | |
| 653 let ind = ind - info.sw | |
| 654 elseif s:IsAssignment(getline(info.plnum_msl), col) | |
| 655 if g:ruby_indent_assignment_style == 'hanging' | |
| 656 " hanging indent | |
| 657 let ind = col + info.sw - 1 | |
| 658 else | |
| 659 " align with variable | |
| 660 let ind = indent(info.plnum_msl) + info.sw | |
| 661 endif | |
| 662 endif | |
| 663 return ind | |
| 664 endif | |
| 665 return -1 | |
| 666 endfunction | |
| 667 | |
| 668 function! s:ContinuedHangingOperator(msl_info) abort | |
| 669 let info = a:msl_info | |
| 670 | |
| 671 " If the previous line ended with [*+/.,-=], but wasn't a block ending or a | |
| 672 " closing bracket, indent one extra level. | |
| 673 if s:Match(info.plnum_msl, s:non_bracket_continuation_regex) && !s:Match(info.plnum_msl, '^\s*\([\])}]\|end\)') | |
| 674 if info.plnum_msl == info.plnum | |
| 675 let ind = indent(info.plnum_msl) + info.sw | |
| 676 else | |
| 677 let ind = indent(info.plnum_msl) | |
| 678 endif | |
| 679 return ind | |
| 680 endif | |
| 681 | |
| 682 return -1 | |
| 683 endfunction | |
| 684 | |
| 685 " 4. Auxiliary Functions {{{1 | |
| 530 | 686 " ====================== |
| 687 | |
| 15512 | 688 function! s:IsInRubyGroup(groups, lnum, col) abort |
| 689 let ids = map(copy(a:groups), 'hlID("ruby".v:val)') | |
| 690 return index(ids, synID(a:lnum, a:col, 1)) >= 0 | |
| 691 endfunction | |
| 692 | |
| 530 | 693 " Check if the character at lnum:col is inside a string, comment, or is ascii. |
| 15512 | 694 function! s:IsInStringOrComment(lnum, col) abort |
| 695 return s:IsInRubyGroup(s:syng_strcom, a:lnum, a:col) | |
| 530 | 696 endfunction |
| 697 | |
| 698 " Check if the character at lnum:col is inside a string. | |
| 15512 | 699 function! s:IsInString(lnum, col) abort |
| 700 return s:IsInRubyGroup(s:syng_string, a:lnum, a:col) | |
| 530 | 701 endfunction |
| 702 | |
| 703 " Check if the character at lnum:col is inside a string or documentation. | |
| 15512 | 704 function! s:IsInStringOrDocumentation(lnum, col) abort |
| 705 return s:IsInRubyGroup(s:syng_stringdoc, a:lnum, a:col) | |
| 530 | 706 endfunction |
| 707 | |
| 4869 | 708 " Check if the character at lnum:col is inside a string delimiter |
| 15512 | 709 function! s:IsInStringDelimiter(lnum, col) abort |
|
18857
70ce979e76bc
Update a few runtime files.
Bram Moolenaar <Bram@vim.org>
parents:
15512
diff
changeset
|
710 return s:IsInRubyGroup( |
|
70ce979e76bc
Update a few runtime files.
Bram Moolenaar <Bram@vim.org>
parents:
15512
diff
changeset
|
711 \ ['HeredocDelimiter', 'PercentStringDelimiter', 'StringDelimiter'], |
|
70ce979e76bc
Update a few runtime files.
Bram Moolenaar <Bram@vim.org>
parents:
15512
diff
changeset
|
712 \ a:lnum, a:col |
|
70ce979e76bc
Update a few runtime files.
Bram Moolenaar <Bram@vim.org>
parents:
15512
diff
changeset
|
713 \ ) |
| 15512 | 714 endfunction |
| 715 | |
| 716 function! s:IsAssignment(str, pos) abort | |
| 717 return strpart(a:str, 0, a:pos - 1) =~ '=\s*$' | |
| 4869 | 718 endfunction |
| 719 | |
| 530 | 720 " Find line above 'lnum' that isn't empty, in a comment, or in a string. |
| 15512 | 721 function! s:PrevNonBlankNonString(lnum) abort |
| 530 | 722 let in_block = 0 |
| 723 let lnum = prevnonblank(a:lnum) | |
| 724 while lnum > 0 | |
| 725 " Go in and out of blocks comments as necessary. | |
| 726 " If the line isn't empty (with opt. comment) or in a string, end search. | |
| 727 let line = getline(lnum) | |
| 4869 | 728 if line =~ '^=begin' |
| 530 | 729 if in_block |
| 4869 | 730 let in_block = 0 |
| 530 | 731 else |
| 4869 | 732 break |
| 530 | 733 endif |
| 4869 | 734 elseif !in_block && line =~ '^=end' |
| 530 | 735 let in_block = 1 |
| 736 elseif !in_block && line !~ '^\s*#.*$' && !(s:IsInStringOrComment(lnum, 1) | |
| 4869 | 737 \ && s:IsInStringOrComment(lnum, strlen(line))) |
| 530 | 738 break |
| 739 endif | |
| 740 let lnum = prevnonblank(lnum - 1) | |
| 741 endwhile | |
| 742 return lnum | |
| 743 endfunction | |
| 744 | |
| 745 " Find line above 'lnum' that started the continuation 'lnum' may be part of. | |
| 15512 | 746 function! s:GetMSL(lnum) abort |
| 530 | 747 " Start on the line we're at and use its indent. |
| 748 let msl = a:lnum | |
| 749 let lnum = s:PrevNonBlankNonString(a:lnum - 1) | |
| 750 while lnum > 0 | |
| 751 " If we have a continuation line, or we're in a string, use line as MSL. | |
| 752 " Otherwise, terminate search as we have found our MSL already. | |
| 753 let line = getline(lnum) | |
| 4869 | 754 |
|
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755 if !s:Match(msl, s:backslash_continuation_regex) && |
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756 \ s:Match(lnum, s:backslash_continuation_regex) |
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757 " If the current line doesn't end in a backslash, but the previous one |
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758 " does, look for that line's msl |
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759 " |
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760 " Example: |
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761 " foo = "bar" \ |
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762 " "baz" |
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763 " |
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764 let msl = lnum |
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765 elseif s:Match(msl, s:leading_operator_regex) |
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766 " If the current line starts with a leading operator, keep its indent |
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767 " and keep looking for an MSL. |
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768 let msl = lnum |
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769 elseif s:Match(lnum, s:splat_regex) |
| 4869 | 770 " If the above line looks like the "*" of a splat, use the current one's |
| 771 " indentation. | |
| 772 " | |
| 773 " Example: | |
| 774 " Hash[* | |
| 775 " method_call do | |
| 776 " something | |
| 777 " | |
| 778 return msl | |
|
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779 elseif s:Match(lnum, s:non_bracket_continuation_regex) && |
| 4869 | 780 \ s:Match(msl, s:non_bracket_continuation_regex) |
| 781 " If the current line is a non-bracket continuation and so is the | |
| 782 " previous one, keep its indent and continue looking for an MSL. | |
| 783 " | |
| 784 " Example: | |
| 785 " method_call one, | |
| 786 " two, | |
| 787 " three | |
| 788 " | |
| 530 | 789 let msl = lnum |
|
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790 elseif s:Match(lnum, s:dot_continuation_regex) && |
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791 \ (s:Match(msl, s:bracket_continuation_regex) || s:Match(msl, s:block_continuation_regex)) |
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792 " If the current line is a bracket continuation or a block-starter, but |
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793 " the previous is a dot, keep going to see if the previous line is the |
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794 " start of another continuation. |
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795 " |
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796 " Example: |
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797 " parent. |
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798 " method_call { |
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799 " three |
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800 " |
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801 let msl = lnum |
| 4869 | 802 elseif s:Match(lnum, s:non_bracket_continuation_regex) && |
| 803 \ (s:Match(msl, s:bracket_continuation_regex) || s:Match(msl, s:block_continuation_regex)) | |
| 804 " If the current line is a bracket continuation or a block-starter, but | |
| 805 " the previous is a non-bracket one, respect the previous' indentation, | |
| 806 " and stop here. | |
| 807 " | |
| 808 " Example: | |
| 809 " method_call one, | |
| 810 " two { | |
| 811 " three | |
| 812 " | |
| 813 return lnum | |
| 814 elseif s:Match(lnum, s:bracket_continuation_regex) && | |
| 815 \ (s:Match(msl, s:bracket_continuation_regex) || s:Match(msl, s:block_continuation_regex)) | |
| 816 " If both lines are bracket continuations (the current may also be a | |
| 817 " block-starter), use the current one's and stop here | |
| 818 " | |
| 819 " Example: | |
| 820 " method_call( | |
| 821 " other_method_call( | |
| 822 " foo | |
| 823 return msl | |
| 824 elseif s:Match(lnum, s:block_regex) && | |
| 825 \ !s:Match(msl, s:continuation_regex) && | |
| 826 \ !s:Match(msl, s:block_continuation_regex) | |
| 827 " If the previous line is a block-starter and the current one is | |
| 828 " mostly ordinary, use the current one as the MSL. | |
| 829 " | |
| 830 " Example: | |
| 831 " method_call do | |
| 832 " something | |
| 833 " something_else | |
| 834 return msl | |
| 530 | 835 else |
| 4869 | 836 let col = match(line, s:continuation_regex) + 1 |
| 837 if (col > 0 && !s:IsInStringOrComment(lnum, col)) | |
| 838 \ || s:IsInString(lnum, strlen(line)) | |
| 839 let msl = lnum | |
| 840 else | |
| 841 break | |
| 842 endif | |
| 530 | 843 endif |
| 4869 | 844 |
| 530 | 845 let lnum = s:PrevNonBlankNonString(lnum - 1) |
| 846 endwhile | |
| 847 return msl | |
| 848 endfunction | |
| 849 | |
| 850 " Check if line 'lnum' has more opening brackets than closing ones. | |
| 15512 | 851 function! s:ExtraBrackets(lnum) abort |
| 4869 | 852 let opening = {'parentheses': [], 'braces': [], 'brackets': []} |
| 853 let closing = {'parentheses': [], 'braces': [], 'brackets': []} | |
| 854 | |
| 530 | 855 let line = getline(a:lnum) |
| 4869 | 856 let pos = match(line, '[][(){}]', 0) |
| 857 | |
| 858 " Save any encountered opening brackets, and remove them once a matching | |
| 859 " closing one has been found. If a closing bracket shows up that doesn't | |
| 860 " close anything, save it for later. | |
| 530 | 861 while pos != -1 |
| 862 if !s:IsInStringOrComment(a:lnum, pos + 1) | |
| 4869 | 863 if line[pos] == '(' |
| 864 call add(opening.parentheses, {'type': '(', 'pos': pos}) | |
| 865 elseif line[pos] == ')' | |
| 866 if empty(opening.parentheses) | |
| 867 call add(closing.parentheses, {'type': ')', 'pos': pos}) | |
| 868 else | |
| 869 let opening.parentheses = opening.parentheses[0:-2] | |
| 870 endif | |
| 871 elseif line[pos] == '{' | |
| 872 call add(opening.braces, {'type': '{', 'pos': pos}) | |
| 873 elseif line[pos] == '}' | |
| 874 if empty(opening.braces) | |
| 875 call add(closing.braces, {'type': '}', 'pos': pos}) | |
| 876 else | |
| 877 let opening.braces = opening.braces[0:-2] | |
| 878 endif | |
| 879 elseif line[pos] == '[' | |
| 880 call add(opening.brackets, {'type': '[', 'pos': pos}) | |
| 881 elseif line[pos] == ']' | |
| 882 if empty(opening.brackets) | |
| 883 call add(closing.brackets, {'type': ']', 'pos': pos}) | |
| 884 else | |
| 885 let opening.brackets = opening.brackets[0:-2] | |
| 886 endif | |
| 530 | 887 endif |
| 888 endif | |
| 4869 | 889 |
| 530 | 890 let pos = match(line, '[][(){}]', pos + 1) |
| 891 endwhile | |
| 4869 | 892 |
| 893 " Find the rightmost brackets, since they're the ones that are important in | |
| 894 " both opening and closing cases | |
| 895 let rightmost_opening = {'type': '(', 'pos': -1} | |
| 896 let rightmost_closing = {'type': ')', 'pos': -1} | |
| 897 | |
| 898 for opening in opening.parentheses + opening.braces + opening.brackets | |
| 899 if opening.pos > rightmost_opening.pos | |
| 900 let rightmost_opening = opening | |
| 901 endif | |
| 902 endfor | |
| 903 | |
| 904 for closing in closing.parentheses + closing.braces + closing.brackets | |
| 905 if closing.pos > rightmost_closing.pos | |
| 906 let rightmost_closing = closing | |
| 907 endif | |
| 908 endfor | |
| 909 | |
| 910 return [rightmost_opening, rightmost_closing] | |
| 530 | 911 endfunction |
| 912 | |
| 15512 | 913 function! s:Match(lnum, regex) abort |
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914 let line = getline(a:lnum) |
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915 let offset = match(line, '\C'.a:regex) |
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916 let col = offset + 1 |
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917 |
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918 while offset > -1 && s:IsInStringOrComment(a:lnum, col) |
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919 let offset = match(line, '\C'.a:regex, offset + 1) |
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920 let col = offset + 1 |
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921 endwhile |
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922 |
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923 if offset > -1 |
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924 return col |
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925 else |
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926 return 0 |
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927 endif |
| 530 | 928 endfunction |
| 929 | |
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930 " Locates the containing class/module's definition line, ignoring nested classes |
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931 " along the way. |
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932 " |
| 15512 | 933 function! s:FindContainingClass() abort |
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934 let saved_position = getpos('.') |
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935 |
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936 while searchpair(s:end_start_regex, s:end_middle_regex, s:end_end_regex, 'bW', |
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937 \ s:end_skip_expr) > 0 |
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938 if expand('<cword>') =~# '\<class\|module\>' |
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939 let found_lnum = line('.') |
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940 call setpos('.', saved_position) |
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941 return found_lnum |
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942 endif |
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943 endwhile |
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944 |
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945 call setpos('.', saved_position) |
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946 return 0 |
| 530 | 947 endfunction |
| 948 | |
| 949 " }}}1 | |
| 950 | |
| 951 let &cpo = s:cpo_save | |
| 952 unlet s:cpo_save | |
| 1121 | 953 |
| 4869 | 954 " vim:set sw=2 sts=2 ts=8 et: |