|
2596
|
1 " Vim indent file
|
|
|
2 " Language: Falcon
|
|
|
3 " Maintainer: Steven Oliver <oliver.steven@gmail.com>
|
|
|
4 " Website: https://steveno@github.com/steveno/falconpl-vim.git
|
|
4869
|
5 " Credits: This is, to a great extent, a copy n' paste of ruby.vim.
|
|
2596
|
6
|
|
4869
|
7 " 1. Setup {{{1
|
|
|
8 " ============
|
|
2596
|
9
|
|
|
10 " Only load this indent file when no other was loaded.
|
|
|
11 if exists("b:did_indent")
|
|
|
12 finish
|
|
|
13 endif
|
|
|
14 let b:did_indent = 1
|
|
|
15
|
|
|
16 setlocal nosmartindent
|
|
|
17
|
|
|
18 " Setup indent function and when to use it
|
|
4869
|
19 setlocal indentexpr=FalconGetIndent(v:lnum)
|
|
2596
|
20 setlocal indentkeys=0{,0},0),0],!^F,o,O,e
|
|
|
21 setlocal indentkeys+==~case,=~catch,=~default,=~elif,=~else,=~end,=~\"
|
|
|
22
|
|
|
23 " Define the appropriate indent function but only once
|
|
|
24 if exists("*FalconGetIndent")
|
|
|
25 finish
|
|
|
26 endif
|
|
|
27
|
|
|
28 let s:cpo_save = &cpo
|
|
|
29 set cpo&vim
|
|
|
30
|
|
4869
|
31 " 2. Variables {{{1
|
|
|
32 " ============
|
|
2596
|
33
|
|
|
34 " Regex of syntax group names that are strings AND comments
|
|
|
35 let s:syng_strcom = '\<falcon\%(String\|StringEscape\|Comment\)\>'
|
|
|
36
|
|
|
37 " Regex of syntax group names that are strings
|
|
|
38 let s:syng_string = '\<falcon\%(String\|StringEscape\)\>'
|
|
|
39
|
|
4869
|
40 " Regex that defines blocks.
|
|
|
41 "
|
|
|
42 " Note that there's a slight problem with this regex and s:continuation_regex.
|
|
|
43 " Code like this will be matched by both:
|
|
|
44 "
|
|
|
45 " method_call do |(a, b)|
|
|
|
46 "
|
|
|
47 " The reason is that the pipe matches a hanging "|" operator.
|
|
|
48 "
|
|
|
49 let s:block_regex =
|
|
|
50 \ '\%(\<do:\@!\>\|%\@<!{\)\s*\%(|\s*(*\s*\%([*@&]\=\h\w*,\=\s*\)\%(,\s*(*\s*[*@&]\=\h\w*\s*)*\s*\)*|\)\=\s*\%(#.*\)\=$'
|
|
|
51
|
|
|
52 let s:block_continuation_regex = '^\s*[^])}\t ].*'.s:block_regex
|
|
|
53
|
|
|
54 " Regex that defines continuation lines.
|
|
|
55 " TODO: this needs to deal with if ...: and so on
|
|
|
56 let s:continuation_regex =
|
|
|
57 \ '\%(%\@<![({[\\.,:*/%+]\|\<and\|\<or\|\%(<%\)\@<![=-]\|\W[|&?]\|||\|&&\)\s*\%(#.*\)\=$'
|
|
|
58
|
|
|
59 " Regex that defines bracket continuations
|
|
|
60 let s:bracket_continuation_regex = '%\@<!\%([({[]\)\s*\%(#.*\)\=$'
|
|
|
61
|
|
|
62 " Regex that defines continuation lines, not including (, {, or [.
|
|
|
63 let s:non_bracket_continuation_regex = '\%([\\.,:*/%+]\|\<and\|\<or\|\%(<%\)\@<![=-]\|\W[|&?]\|||\|&&\)\s*\%(#.*\)\=$'
|
|
|
64
|
|
2596
|
65 " Keywords to indent on
|
|
|
66 let s:falcon_indent_keywords = '^\s*\(case\|catch\|class\|enum\|default\|elif\|else' .
|
|
|
67 \ '\|for\|function\|if.*"[^"]*:.*"\|if \(\(:\)\@!.\)*$\|loop\|object\|select' .
|
|
|
68 \ '\|switch\|try\|while\|\w*\s*=\s*\w*([$\)'
|
|
|
69
|
|
|
70 " Keywords to deindent on
|
|
|
71 let s:falcon_deindent_keywords = '^\s*\(case\|catch\|default\|elif\|else\|end\)'
|
|
|
72
|
|
4869
|
73 " 3. Functions {{{1
|
|
|
74 " ============
|
|
2596
|
75
|
|
4869
|
76 " Check if the character at lnum:col is inside a string, comment, or is ascii.
|
|
2596
|
77 function s:IsInStringOrComment(lnum, col)
|
|
|
78 return synIDattr(synID(a:lnum, a:col, 1), 'name') =~ s:syng_strcom
|
|
|
79 endfunction
|
|
|
80
|
|
4869
|
81 " Check if the character at lnum:col is inside a string.
|
|
|
82 function s:IsInString(lnum, col)
|
|
|
83 return synIDattr(synID(a:lnum, a:col, 1), 'name') =~ s:syng_string
|
|
|
84 endfunction
|
|
|
85
|
|
|
86 " Check if the character at lnum:col is inside a string delimiter
|
|
|
87 function s:IsInStringDelimiter(lnum, col)
|
|
|
88 return synIDattr(synID(a:lnum, a:col, 1), 'name') == 'falconStringDelimiter'
|
|
|
89 endfunction
|
|
2596
|
90
|
|
4869
|
91 " Find line above 'lnum' that isn't empty, in a comment, or in a string.
|
|
|
92 function s:PrevNonBlankNonString(lnum)
|
|
|
93 let in_block = 0
|
|
|
94 let lnum = prevnonblank(a:lnum)
|
|
|
95 while lnum > 0
|
|
|
96 " Go in and out of blocks comments as necessary.
|
|
|
97 " If the line isn't empty (with opt. comment) or in a string, end search.
|
|
|
98 let line = getline(lnum)
|
|
|
99 if line =~ '^=begin'
|
|
|
100 if in_block
|
|
|
101 let in_block = 0
|
|
|
102 else
|
|
|
103 break
|
|
|
104 endif
|
|
|
105 elseif !in_block && line =~ '^=end'
|
|
|
106 let in_block = 1
|
|
|
107 elseif !in_block && line !~ '^\s*#.*$' && !(s:IsInStringOrComment(lnum, 1)
|
|
|
108 \ && s:IsInStringOrComment(lnum, strlen(line)))
|
|
|
109 break
|
|
|
110 endif
|
|
|
111 let lnum = prevnonblank(lnum - 1)
|
|
|
112 endwhile
|
|
|
113 return lnum
|
|
|
114 endfunction
|
|
2596
|
115
|
|
4869
|
116 " Find line above 'lnum' that started the continuation 'lnum' may be part of.
|
|
|
117 function s:GetMSL(lnum)
|
|
|
118 " Start on the line we're at and use its indent.
|
|
|
119 let msl = a:lnum
|
|
|
120 let msl_body = getline(msl)
|
|
|
121 let lnum = s:PrevNonBlankNonString(a:lnum - 1)
|
|
|
122 while lnum > 0
|
|
|
123 " If we have a continuation line, or we're in a string, use line as MSL.
|
|
|
124 " Otherwise, terminate search as we have found our MSL already.
|
|
|
125 let line = getline(lnum)
|
|
|
126
|
|
|
127 if s:Match(line, s:non_bracket_continuation_regex) &&
|
|
|
128 \ s:Match(msl, s:non_bracket_continuation_regex)
|
|
|
129 " If the current line is a non-bracket continuation and so is the
|
|
|
130 " previous one, keep its indent and continue looking for an MSL.
|
|
|
131 "
|
|
|
132 " Example:
|
|
|
133 " method_call one,
|
|
|
134 " two,
|
|
|
135 " three
|
|
|
136 "
|
|
|
137 let msl = lnum
|
|
|
138 elseif s:Match(lnum, s:non_bracket_continuation_regex) &&
|
|
|
139 \ (s:Match(msl, s:bracket_continuation_regex) || s:Match(msl, s:block_continuation_regex))
|
|
|
140 " If the current line is a bracket continuation or a block-starter, but
|
|
|
141 " the previous is a non-bracket one, respect the previous' indentation,
|
|
|
142 " and stop here.
|
|
|
143 "
|
|
|
144 " Example:
|
|
|
145 " method_call one,
|
|
|
146 " two {
|
|
|
147 " three
|
|
|
148 "
|
|
|
149 return lnum
|
|
|
150 elseif s:Match(lnum, s:bracket_continuation_regex) &&
|
|
|
151 \ (s:Match(msl, s:bracket_continuation_regex) || s:Match(msl, s:block_continuation_regex))
|
|
|
152 " If both lines are bracket continuations (the current may also be a
|
|
|
153 " block-starter), use the current one's and stop here
|
|
|
154 "
|
|
|
155 " Example:
|
|
|
156 " method_call(
|
|
|
157 " other_method_call(
|
|
|
158 " foo
|
|
|
159 return msl
|
|
|
160 elseif s:Match(lnum, s:block_regex) &&
|
|
|
161 \ !s:Match(msl, s:continuation_regex) &&
|
|
|
162 \ !s:Match(msl, s:block_continuation_regex)
|
|
|
163 " If the previous line is a block-starter and the current one is
|
|
|
164 " mostly ordinary, use the current one as the MSL.
|
|
|
165 "
|
|
|
166 " Example:
|
|
|
167 " method_call do
|
|
|
168 " something
|
|
|
169 " something_else
|
|
|
170 return msl
|
|
|
171 else
|
|
|
172 let col = match(line, s:continuation_regex) + 1
|
|
|
173 if (col > 0 && !s:IsInStringOrComment(lnum, col))
|
|
|
174 \ || s:IsInString(lnum, strlen(line))
|
|
|
175 let msl = lnum
|
|
|
176 else
|
|
|
177 break
|
|
|
178 endif
|
|
|
179 endif
|
|
|
180
|
|
|
181 let msl_body = getline(msl)
|
|
|
182 let lnum = s:PrevNonBlankNonString(lnum - 1)
|
|
|
183 endwhile
|
|
|
184 return msl
|
|
|
185 endfunction
|
|
|
186
|
|
|
187 " Check if line 'lnum' has more opening brackets than closing ones.
|
|
|
188 function s:ExtraBrackets(lnum)
|
|
|
189 let opening = {'parentheses': [], 'braces': [], 'brackets': []}
|
|
|
190 let closing = {'parentheses': [], 'braces': [], 'brackets': []}
|
|
2596
|
191
|
|
4869
|
192 let line = getline(a:lnum)
|
|
|
193 let pos = match(line, '[][(){}]', 0)
|
|
|
194
|
|
|
195 " Save any encountered opening brackets, and remove them once a matching
|
|
|
196 " closing one has been found. If a closing bracket shows up that doesn't
|
|
|
197 " close anything, save it for later.
|
|
|
198 while pos != -1
|
|
|
199 if !s:IsInStringOrComment(a:lnum, pos + 1)
|
|
|
200 if line[pos] == '('
|
|
|
201 call add(opening.parentheses, {'type': '(', 'pos': pos})
|
|
|
202 elseif line[pos] == ')'
|
|
|
203 if empty(opening.parentheses)
|
|
|
204 call add(closing.parentheses, {'type': ')', 'pos': pos})
|
|
|
205 else
|
|
|
206 let opening.parentheses = opening.parentheses[0:-2]
|
|
|
207 endif
|
|
|
208 elseif line[pos] == '{'
|
|
|
209 call add(opening.braces, {'type': '{', 'pos': pos})
|
|
|
210 elseif line[pos] == '}'
|
|
|
211 if empty(opening.braces)
|
|
|
212 call add(closing.braces, {'type': '}', 'pos': pos})
|
|
|
213 else
|
|
|
214 let opening.braces = opening.braces[0:-2]
|
|
|
215 endif
|
|
|
216 elseif line[pos] == '['
|
|
|
217 call add(opening.brackets, {'type': '[', 'pos': pos})
|
|
|
218 elseif line[pos] == ']'
|
|
|
219 if empty(opening.brackets)
|
|
|
220 call add(closing.brackets, {'type': ']', 'pos': pos})
|
|
|
221 else
|
|
|
222 let opening.brackets = opening.brackets[0:-2]
|
|
|
223 endif
|
|
|
224 endif
|
|
|
225 endif
|
|
|
226
|
|
|
227 let pos = match(line, '[][(){}]', pos + 1)
|
|
|
228 endwhile
|
|
|
229
|
|
|
230 " Find the rightmost brackets, since they're the ones that are important in
|
|
|
231 " both opening and closing cases
|
|
|
232 let rightmost_opening = {'type': '(', 'pos': -1}
|
|
|
233 let rightmost_closing = {'type': ')', 'pos': -1}
|
|
|
234
|
|
|
235 for opening in opening.parentheses + opening.braces + opening.brackets
|
|
|
236 if opening.pos > rightmost_opening.pos
|
|
|
237 let rightmost_opening = opening
|
|
|
238 endif
|
|
|
239 endfor
|
|
|
240
|
|
|
241 for closing in closing.parentheses + closing.braces + closing.brackets
|
|
|
242 if closing.pos > rightmost_closing.pos
|
|
|
243 let rightmost_closing = closing
|
|
|
244 endif
|
|
|
245 endfor
|
|
|
246
|
|
|
247 return [rightmost_opening, rightmost_closing]
|
|
|
248 endfunction
|
|
|
249
|
|
|
250 function s:Match(lnum, regex)
|
|
|
251 let col = match(getline(a:lnum), '\C'.a:regex) + 1
|
|
|
252 return col > 0 && !s:IsInStringOrComment(a:lnum, col) ? col : 0
|
|
|
253 endfunction
|
|
|
254
|
|
|
255 function s:MatchLast(lnum, regex)
|
|
|
256 let line = getline(a:lnum)
|
|
|
257 let col = match(line, '.*\zs' . a:regex)
|
|
|
258 while col != -1 && s:IsInStringOrComment(a:lnum, col)
|
|
|
259 let line = strpart(line, 0, col)
|
|
|
260 let col = match(line, '.*' . a:regex)
|
|
|
261 endwhile
|
|
|
262 return col + 1
|
|
|
263 endfunction
|
|
|
264
|
|
|
265 " 4. FalconGetIndent Routine {{{1
|
|
|
266 " ============
|
|
|
267
|
|
|
268 function FalconGetIndent(...)
|
|
|
269 " For the current line, use the first argument if given, else v:lnum
|
|
|
270 let clnum = a:0 ? a:1 : v:lnum
|
|
2596
|
271
|
|
|
272 " Use zero indent at the top of the file
|
|
4869
|
273 if clnum == 0
|
|
2596
|
274 return 0
|
|
|
275 endif
|
|
|
276
|
|
4869
|
277 let line = getline(clnum)
|
|
|
278 let ind = -1
|
|
2596
|
279
|
|
4869
|
280 " If we got a closing bracket on an empty line, find its match and indent
|
|
|
281 " according to it. For parentheses we indent to its column - 1, for the
|
|
|
282 " others we indent to the containing line's MSL's level. Return -1 if fail.
|
|
|
283 let col = matchend(line, '^\s*[]})]')
|
|
|
284 if col > 0 && !s:IsInStringOrComment(clnum, col)
|
|
|
285 call cursor(clnum, col)
|
|
|
286 let bs = strpart('(){}[]', stridx(')}]', line[col - 1]) * 2, 2)
|
|
|
287 if searchpair(escape(bs[0], '\['), '', bs[1], 'bW', s:skip_expr) > 0
|
|
|
288 if line[col-1]==')' && col('.') != col('$') - 1
|
|
|
289 let ind = virtcol('.') - 1
|
|
|
290 else
|
|
|
291 let ind = indent(s:GetMSL(line('.')))
|
|
|
292 endif
|
|
|
293 endif
|
|
|
294 return ind
|
|
2596
|
295 endif
|
|
|
296
|
|
4869
|
297 " If we have a deindenting keyword, find its match and indent to its level.
|
|
|
298 " TODO: this is messy
|
|
|
299 if s:Match(clnum, s:falcon_deindent_keywords)
|
|
|
300 call cursor(clnum, 1)
|
|
|
301 if searchpair(s:end_start_regex, s:end_middle_regex, s:end_end_regex, 'bW',
|
|
|
302 \ s:end_skip_expr) > 0
|
|
|
303 let msl = s:GetMSL(line('.'))
|
|
|
304 let line = getline(line('.'))
|
|
|
305
|
|
|
306 if strpart(line, 0, col('.') - 1) =~ '=\s*$' &&
|
|
|
307 \ strpart(line, col('.') - 1, 2) !~ 'do'
|
|
|
308 let ind = virtcol('.') - 1
|
|
|
309 elseif getline(msl) =~ '=\s*\(#.*\)\=$'
|
|
|
310 let ind = indent(line('.'))
|
|
|
311 else
|
|
|
312 let ind = indent(msl)
|
|
|
313 endif
|
|
|
314 endif
|
|
|
315 return ind
|
|
2596
|
316 endif
|
|
|
317
|
|
4869
|
318 " If we are in a multi-line string or line-comment, don't do anything to it.
|
|
|
319 if s:IsInString(clnum, matchend(line, '^\s*') + 1)
|
|
|
320 return indent('.')
|
|
|
321 endif
|
|
|
322
|
|
|
323 " Find a non-blank, non-multi-line string line above the current line.
|
|
|
324 let lnum = s:PrevNonBlankNonString(clnum - 1)
|
|
|
325
|
|
|
326 " If the line is empty and inside a string, use the previous line.
|
|
|
327 if line =~ '^\s*$' && lnum != prevnonblank(clnum - 1)
|
|
|
328 return indent(prevnonblank(clnum))
|
|
|
329 endif
|
|
|
330
|
|
|
331 " At the start of the file use zero indent.
|
|
|
332 if lnum == 0
|
|
|
333 return 0
|
|
|
334 endif
|
|
|
335
|
|
|
336 " Set up variables for the previous line.
|
|
|
337 let line = getline(lnum)
|
|
|
338 let ind = indent(lnum)
|
|
|
339
|
|
|
340 " If the previous line ended with a block opening, add a level of indent.
|
|
|
341 if s:Match(lnum, s:block_regex)
|
|
|
342 return indent(s:GetMSL(lnum)) + &sw
|
|
2596
|
343 endif
|
|
|
344
|
|
4869
|
345 " If it contained hanging closing brackets, find the rightmost one, find its
|
|
|
346 " match and indent according to that.
|
|
|
347 if line =~ '[[({]' || line =~ '[])}]\s*\%(#.*\)\=$'
|
|
|
348 let [opening, closing] = s:ExtraBrackets(lnum)
|
|
|
349
|
|
|
350 if opening.pos != -1
|
|
|
351 if opening.type == '(' && searchpair('(', '', ')', 'bW', s:skip_expr) > 0
|
|
|
352 if col('.') + 1 == col('$')
|
|
|
353 return ind + &sw
|
|
|
354 else
|
|
|
355 return virtcol('.')
|
|
|
356 endif
|
|
|
357 else
|
|
|
358 let nonspace = matchend(line, '\S', opening.pos + 1) - 1
|
|
|
359 return nonspace > 0 ? nonspace : ind + &sw
|
|
|
360 endif
|
|
|
361 elseif closing.pos != -1
|
|
|
362 call cursor(lnum, closing.pos + 1)
|
|
|
363 normal! %
|
|
|
364
|
|
|
365 if s:Match(line('.'), s:falcon_indent_keywords)
|
|
|
366 return indent('.') + &sw
|
|
|
367 else
|
|
|
368 return indent('.')
|
|
|
369 endif
|
|
|
370 else
|
|
|
371 call cursor(clnum, vcol)
|
|
|
372 end
|
|
2596
|
373 endif
|
|
|
374
|
|
4869
|
375 " If the previous line ended with an "end", match that "end"s beginning's
|
|
|
376 " indent.
|
|
|
377 let col = s:Match(lnum, '\%(^\|[^.:@$]\)\<end\>\s*\%(#.*\)\=$')
|
|
|
378 if col > 0
|
|
|
379 call cursor(lnum, col)
|
|
|
380 if searchpair(s:end_start_regex, '', s:end_end_regex, 'bW',
|
|
|
381 \ s:end_skip_expr) > 0
|
|
|
382 let n = line('.')
|
|
|
383 let ind = indent('.')
|
|
|
384 let msl = s:GetMSL(n)
|
|
|
385 if msl != n
|
|
|
386 let ind = indent(msl)
|
|
|
387 end
|
|
|
388 return ind
|
|
|
389 endif
|
|
|
390 end
|
|
2596
|
391
|
|
4869
|
392 let col = s:Match(lnum, s:falcon_indent_keywords)
|
|
|
393 if col > 0
|
|
|
394 call cursor(lnum, col)
|
|
|
395 let ind = virtcol('.') - 1 + &sw
|
|
|
396 " TODO: make this better (we need to count them) (or, if a searchpair
|
|
|
397 " fails, we know that something is lacking an end and thus we indent a
|
|
|
398 " level
|
|
|
399 if s:Match(lnum, s:end_end_regex)
|
|
|
400 let ind = indent('.')
|
|
|
401 endif
|
|
|
402 return ind
|
|
2596
|
403 endif
|
|
|
404
|
|
4869
|
405 " Set up variables to use and search for MSL to the previous line.
|
|
|
406 let p_lnum = lnum
|
|
|
407 let lnum = s:GetMSL(lnum)
|
|
|
408
|
|
|
409 " If the previous line wasn't a MSL and is continuation return its indent.
|
|
|
410 " TODO: the || s:IsInString() thing worries me a bit.
|
|
|
411 if p_lnum != lnum
|
|
|
412 if s:Match(p_lnum, s:non_bracket_continuation_regex) || s:IsInString(p_lnum,strlen(line))
|
|
|
413 return ind
|
|
|
414 endif
|
|
2596
|
415 endif
|
|
|
416
|
|
4869
|
417 " Set up more variables, now that we know we wasn't continuation bound.
|
|
|
418 let line = getline(lnum)
|
|
|
419 let msl_ind = indent(lnum)
|
|
|
420
|
|
|
421 " If the MSL line had an indenting keyword in it, add a level of indent.
|
|
|
422 " TODO: this does not take into account contrived things such as
|
|
|
423 " module Foo; class Bar; end
|
|
|
424 if s:Match(lnum, s:falcon_indent_keywords)
|
|
|
425 let ind = msl_ind + &sw
|
|
|
426 if s:Match(lnum, s:end_end_regex)
|
|
|
427 let ind = ind - &sw
|
|
|
428 endif
|
|
|
429 return ind
|
|
2596
|
430 endif
|
|
|
431
|
|
4869
|
432 " If the previous line ended with [*+/.,-=], but wasn't a block ending or a
|
|
|
433 " closing bracket, indent one extra level.
|
|
|
434 if s:Match(lnum, s:non_bracket_continuation_regex) && !s:Match(lnum, '^\s*\([\])}]\|end\)')
|
|
|
435 if lnum == p_lnum
|
|
|
436 let ind = msl_ind + &sw
|
|
|
437 else
|
|
|
438 let ind = msl_ind
|
|
|
439 endif
|
|
|
440 return ind
|
|
|
441 endif
|
|
|
442
|
|
|
443 return ind
|
|
2596
|
444 endfunction
|
|
|
445
|
|
4869
|
446 " }}}1
|
|
|
447
|
|
3224
|
448 let &cpo = s:cpo_save
|
|
|
449 unlet s:cpo_save
|
|
|
450
|
|
2596
|
451 " vim: set sw=4 sts=4 et tw=80 :
|
