7
|
1 " Vim indent file
|
20
|
2 " Language: OCaml
|
|
3 " Maintainers: Jean-Francois Yuen <jfyuen@happycoders.org>
|
|
4 " Mike Leary <leary@nwlink.com>
|
|
5 " Markus Mottl <markus@oefai.at>
|
|
6 " URL: http://www.oefai.at/~markus/vim/indent/ocaml.vim
|
|
7 " Last Change: 2004 Apr 11 - Added indent for 'class' (JY)
|
|
8 " 2003 Sep 16 - Added 'private' as keyword (JY)
|
|
9 " 2003 Mar 29 - Fixed bug with 'if' and 'else' (JY)
|
7
|
10
|
|
11 " Only load this indent file when no other was loaded.
|
|
12 if exists("b:did_indent")
|
|
13 finish
|
|
14 endif
|
|
15 let b:did_indent = 1
|
|
16
|
|
17 setlocal expandtab
|
|
18 setlocal indentexpr=GetOCamlIndent()
|
20
|
19 setlocal indentkeys+=0=and,0=class,0=constraint,0=done,0=else,0=end,0=exception,0=external,0=if,0=in,0=include,0=inherit,0=initializer,0=let,0=method,0=open,0=then,0=type,0=val,0=with,0;;,0>\],0\|\],0>},0\|,0},0\],0)
|
7
|
20 setlocal nolisp
|
|
21 setlocal nosmartindent
|
|
22 setlocal textwidth=80
|
|
23
|
|
24 " Comment formatting
|
|
25 if (has("comments"))
|
|
26 setlocal comments=sr:(*,mb:*,ex:*)
|
|
27 setlocal fo=cqort
|
|
28 endif
|
|
29
|
|
30 " Only define the function once.
|
|
31 if exists("*GetOCamlIndent")
|
|
32 finish
|
|
33 endif
|
|
34
|
|
35 " Define some patterns:
|
20
|
36 let s:beflet = '^\s*\(initializer\|method\|try\)\|\(\<\(begin\|do\|else\|in\|then\|try\)\|->\|<-\|=\|;\|(\)\s*$'
|
7
|
37 let s:letpat = '^\s*\(let\|type\|module\|class\|open\|exception\|val\|include\|external\)\>'
|
|
38 let s:letlim = '\(\<\(sig\|struct\)\|;;\)\s*$'
|
|
39 let s:lim = '^\s*\(exception\|external\|include\|let\|module\|open\|type\|val\)\>'
|
|
40 let s:module = '\<\%(begin\|sig\|struct\|object\)\>'
|
|
41 let s:obj = '^\s*\(constraint\|inherit\|initializer\|method\|val\)\>\|\<\(object\|object\s*(.*)\)\s*$'
|
20
|
42 let s:type = '^\s*\%(class\|let\|type\)\>.*='
|
7
|
43
|
|
44 " Skipping pattern, for comments
|
|
45 function s:SkipPattern(lnum, pat)
|
|
46 let def = prevnonblank(a:lnum - 1)
|
|
47 while def > 0 && getline(def) =~ a:pat
|
|
48 let def = prevnonblank(def - 1)
|
|
49 endwhile
|
|
50 return def
|
|
51 endfunction
|
|
52
|
|
53 " Indent for ';;' to match multiple 'let'
|
|
54 function s:GetInd(lnum, pat, lim)
|
|
55 let llet = search(a:pat, 'bW')
|
|
56 let old = indent(a:lnum)
|
|
57 while llet > 0
|
|
58 let old = indent(llet)
|
|
59 let nb = s:SkipPattern(llet, '^\s*(\*.*\*)\s*$')
|
|
60 if getline(nb) =~ a:lim
|
|
61 return old
|
|
62 endif
|
|
63 let llet = search(a:pat, 'bW')
|
|
64 endwhile
|
|
65 return old
|
|
66 endfunction
|
|
67
|
|
68 " Indent pairs
|
|
69 function s:FindPair(pstart, pmid, pend)
|
|
70 call search(a:pend, 'bW')
|
|
71 return indent(searchpair(a:pstart, a:pmid, a:pend, 'bWn', 'synIDattr(synID(line("."), col("."), 0), "name") =~? "string\\|comment"'))
|
|
72 endfunction
|
|
73
|
|
74 " Indent 'let'
|
|
75 function s:FindLet(pstart, pmid, pend)
|
|
76 call search(a:pend, 'bW')
|
20
|
77 return indent(searchpair(a:pstart, a:pmid, a:pend, 'bWn', 'synIDattr(synID(line("."), col("."), 0), "name") =~? "string\\|comment" || getline(".") =~ "^\\s*let\\>.*=.*\\<in\\s*$" || getline(prevnonblank(".") - 1) =~ s:beflet'))
|
7
|
78 endfunction
|
|
79
|
|
80 function GetOCamlIndent()
|
|
81 " Find a non-blank line above the current line.
|
|
82 let lnum = prevnonblank(v:lnum - 1)
|
|
83
|
|
84 " At the start of the file use zero indent.
|
|
85 if lnum == 0
|
|
86 return 0
|
|
87 endif
|
|
88
|
|
89 let ind = indent(lnum)
|
|
90 let lline = getline(lnum)
|
|
91
|
|
92 " Return double 'shiftwidth' after lines matching:
|
|
93 if lline =~ '^\s*|.*->\s*$'
|
|
94 return ind + &sw + &sw
|
|
95 endif
|
|
96
|
|
97 let line = getline(v:lnum)
|
|
98
|
20
|
99 " Indent if current line begins with 'end':
|
7
|
100 if line =~ '^\s*end\>'
|
|
101 return s:FindPair(s:module, '','\<end\>')
|
|
102
|
|
103 " Indent if current line begins with 'done' for 'do':
|
|
104 elseif line =~ '^\s*done\>'
|
|
105 return s:FindPair('\<do\>', '','\<done\>')
|
|
106
|
|
107 " Indent if current line begins with '}' or '>}':
|
|
108 elseif line =~ '^\s*\(\|>\)}'
|
|
109 return s:FindPair('{', '','}')
|
|
110
|
|
111 " Indent if current line begins with ']', '|]' or '>]':
|
|
112 elseif line =~ '^\s*\(\||\|>\)\]'
|
|
113 return s:FindPair('\[', '','\]')
|
|
114
|
|
115 " Indent if current line begins with ')':
|
|
116 elseif line =~ '^\s*)'
|
|
117 return s:FindPair('(', '',')')
|
|
118
|
20
|
119 " Indent if current line begins with 'let':
|
7
|
120 elseif line =~ '^\s*let\>'
|
|
121 if lline !~ s:lim . '\|' . s:letlim . '\|' . s:beflet
|
|
122 return s:FindLet(s:type, '','\<let\s*$')
|
|
123 else return ind
|
|
124 endif
|
|
125
|
20
|
126 " Indent if current line begins with 'class' or 'type':
|
|
127 elseif line =~ '^\s*\(class\|type\)\>'
|
7
|
128 if lline !~ s:lim . '\|\<and\s*$\|' . s:letlim
|
20
|
129 return s:FindLet(s:type, '','\<\(class\|type\)\s*$')
|
7
|
130 else return ind
|
|
131 endif
|
|
132
|
|
133 " Indent for pattern matching:
|
|
134 elseif line =~ '^\s*|'
|
20
|
135 if lline !~ '^\s*\(|[^\]]\|\(match\|type\|with\)\>\)\|\<\(function\|parser\|private\|with\)\s*$'
|
7
|
136 call search('|', 'bW')
|
20
|
137 return indent(searchpair('^\s*\(match\|type\)\>\|\<\(function\|parser\|private\|with\)\s*$', '', '^\s*|', 'bWn', 'synIDattr(synID(line("."), col("."), 0), "name") =~? "string\\|comment" || getline(".") !~ "^\\s*|.*->"'))
|
7
|
138 else return ind
|
|
139 endif
|
|
140
|
|
141 " Indent if current line begins with ';;':
|
|
142 elseif line =~ '^\s*;;'
|
|
143 if lline !~ ';;\s*$'
|
|
144 return s:GetInd(v:lnum, s:letpat, s:letlim)
|
|
145 else return ind
|
|
146 endif
|
|
147
|
20
|
148 " Indent if current line begins with 'in':
|
7
|
149 elseif line =~ '^\s*in\>'
|
|
150 if lline !~ '^\s*\(let\|and\)\>'
|
|
151 return s:FindPair('\<let\>', '', '\<in\>')
|
|
152 else return ind
|
|
153 endif
|
|
154
|
20
|
155 " Indent if current line begins with 'else':
|
7
|
156 elseif line =~ '^\s*else\>'
|
20
|
157 if lline !~ '^\s*\(if\|then\)\>'
|
7
|
158 return s:FindPair('\<if\>', '', '\<else\>')
|
|
159 else return ind
|
|
160 endif
|
|
161
|
20
|
162 " Indent if current line begins with 'then':
|
7
|
163 elseif line =~ '^\s*then\>'
|
20
|
164 if lline !~ '^\s*\(if\|else\)\>'
|
7
|
165 return s:FindPair('\<if\>', '', '\<then\>')
|
|
166 else return ind
|
|
167 endif
|
|
168
|
20
|
169 " Indent if current line begins with 'and':
|
7
|
170 elseif line =~ '^\s*and\>'
|
|
171 if lline !~ '^\s*\(and\|let\|type\)\>\|\<end\s*$'
|
|
172 return ind - &sw
|
|
173 else return ind
|
|
174 endif
|
|
175
|
20
|
176 " Indent if current line begins with 'with':
|
7
|
177 elseif line =~ '^\s*with\>'
|
|
178 if lline !~ '^\s*\(match\|try\)\>'
|
|
179 return s:FindPair('\<\%(match\|try\)\>', '','\<with\>')
|
|
180 else return ind
|
|
181 endif
|
|
182
|
|
183 " Indent if current line begins with 'exception':
|
|
184 elseif line =~ '^\s*exception\>'
|
|
185 if lline !~ s:lim . '\|' . s:letlim
|
20
|
186 return indent(search('^\s*\(\(external\|include\|open\|type\)\>\|val\>.*:\)', 'bW'))
|
7
|
187 else return ind
|
|
188 endif
|
|
189
|
|
190 " Indent if current line begins with 'external':
|
|
191 elseif line =~ '^\s*external\>'
|
|
192 if lline !~ s:lim . '\|' . s:letlim
|
20
|
193 return indent(search('^\s*\(\(exception\|external\|include\|open\|type\)\>\|val\>.*:\)', 'bW'))
|
7
|
194 else return ind
|
|
195 endif
|
|
196
|
|
197 " Indent if current line begins with 'include':
|
|
198 elseif line =~ '^\s*include\>'
|
|
199 if lline !~ s:lim . '\|' . s:letlim
|
20
|
200 return indent(search('^\s*\(\(exception\|external\|open\|type\)\>\|val\>.*:\)', 'bW'))
|
7
|
201 else return ind
|
|
202 endif
|
|
203
|
|
204 " Indent if current line begins with 'open':
|
|
205 elseif line =~ '^\s*open\>'
|
|
206 if lline !~ s:lim . '\|' . s:letlim
|
20
|
207 return indent(search('^\s*\(\(exception\|external\|include\|type\)\>\|val\>.*:\)', 'bW'))
|
7
|
208 else return ind
|
|
209 endif
|
|
210
|
|
211 " Indent if current line begins with 'val':
|
|
212 elseif line =~ '^\s*val\>'
|
|
213 if lline !~ '^\s*\(exception\|external\|include\|open\)\>\|' . s:obj . '\|' . s:letlim
|
20
|
214 return indent(search('^\s*\(\(exception\|include\|initializer\|method\|open\|type\|val\)\>\|external\>.*:\)', 'bW'))
|
7
|
215 else return ind
|
|
216 endif
|
|
217
|
|
218 " Indent if current line begins with 'constraint':
|
|
219 elseif line =~ '^\s*constraint\>'
|
|
220 if lline !~ s:obj
|
|
221 return indent(search('^\s*\(inherit\|initializer\|method\|val\)\>', 'bW'))
|
|
222 else return ind
|
|
223 endif
|
|
224
|
|
225 " Indent if current line begins with 'inherit':
|
|
226 elseif line =~ '^\s*inherit\>'
|
|
227 if lline !~ s:obj
|
|
228 return indent(search('^\s*\(constraint\|initializer\|method\|val\)\>', 'bW'))
|
|
229 else return ind
|
|
230 endif
|
|
231
|
|
232 " Indent if current line begins with 'inherit':
|
|
233 elseif line =~ '^\s*initializer\>'
|
|
234 if lline !~ s:obj
|
|
235 return indent(search('^\s*\(constraint\|inherit\|method\|val\)\>', 'bW'))
|
|
236 else return ind
|
|
237 endif
|
|
238
|
|
239 " Indent if current line begins with 'method':
|
|
240 elseif line =~ '^\s*method\>'
|
|
241 if lline !~ s:obj
|
|
242 return indent(search('^\s*\(\(constraint\|inherit\|initializer\|val\)\>\|method\>.*\(:\|=\)\)', 'bW'))
|
|
243 else return ind
|
|
244 endif
|
|
245
|
|
246 endif
|
|
247
|
|
248 " Add a 'shiftwidth' after lines ending with:
|
20
|
249 if lline =~ '\(:\|=\|->\|<-\|(\|\[\|{\|{<\|\[|\|\[<\|\<\(begin\|do\|else\|fun\|function\|functor\|if\|initializer\|object\|parser\|private\|sig\|struct\|then\|try\)\|\<object\s*(.*)\)\s*$'
|
7
|
250 let ind = ind + &sw
|
|
251
|
|
252 " Back to normal indent after lines ending with ';;':
|
|
253 elseif lline =~ ';;\s*$' && lline !~ '^\s*;;'
|
|
254 let ind = s:GetInd(v:lnum, s:letpat, s:letlim)
|
|
255
|
|
256 " Back to normal indent after lines ending with 'end':
|
|
257 elseif lline =~ '\<end\s*$'
|
|
258 let ind = s:FindPair(s:module, '','\<end\>')
|
|
259
|
|
260 " Back to normal indent after lines ending with 'in':
|
|
261 elseif lline =~ '\<in\s*$' && lline !~ '^\s*in\>'
|
|
262 let ind = s:FindPair('\<let\>', '', '\<in\>')
|
|
263
|
|
264 " Back to normal indent after lines ending with 'done':
|
|
265 elseif lline =~ '\<done\s*$'
|
|
266 let ind = s:FindPair('\<do\>', '','\<done\>')
|
|
267
|
|
268 " Back to normal indent after lines ending with '}' or '>}':
|
|
269 elseif lline =~ '\(\|>\)}\s*$'
|
|
270 let ind = s:FindPair('{', '','}')
|
|
271
|
|
272 " Back to normal indent after lines ending with ']', '|]' or '>]':
|
|
273 elseif lline =~ '\(\||\|>\)\]\s*$'
|
|
274 let ind = s:FindPair('\[', '','\]')
|
|
275
|
|
276 " Back to normal indent after comments:
|
|
277 elseif lline =~ '\*)\s*$'
|
|
278 call search('\*)', 'bW')
|
|
279 let ind = indent(searchpair('(\*', '', '\*)', 'bWn', 'synIDattr(synID(line("."), col("."), 0), "name") =~? "string"'))
|
|
280
|
|
281 " Back to normal indent after lines ending with ')':
|
|
282 elseif lline =~ ')\s*$'
|
|
283 let ind = s:FindPair('(', '',')')
|
|
284
|
|
285 endif
|
|
286
|
|
287 " Subtract a 'shiftwidth' after lines matching 'match ... with parser':
|
|
288 if lline =~ '^\s*match\>.*\<with\>\s*\<parser\s*$'
|
|
289 let ind = ind - &sw
|
|
290 endif
|
|
291
|
|
292 return ind
|
|
293
|
|
294 endfunction
|
|
295
|
|
296 " vim:sw=2
|