xref: /vim-8.2.3635/runtime/ftplugin/fortran.vim (revision 00a927d6)
1" Vim settings file
2" Language:	Fortran90 (and Fortran95, Fortran77, F and elf90)
3" Version:	0.45
4" Last Change:	2006 Apr. 03
5" URL:		http://www.unb.ca/chem/ajit/ftplugin/fortran.vim
6" Maintainer:	Ajit J. Thakkar <[email protected]>; <http://www.unb.ca/chem/ajit/>
7" Usage:	Do :help fortran-plugin from Vim
8" Credits:      Useful suggestions were made by Stefano Zacchiroli
9
10" Only do these settings when not done yet for this buffer
11if exists("b:did_ftplugin")
12  finish
13endif
14
15" Don't do other file type settings for this buffer
16let b:did_ftplugin = 1
17
18" Determine whether this is a fixed or free format source file
19" if this hasn't been done yet
20if !exists("b:fortran_fixed_source")
21  if exists("fortran_free_source")
22    " User guarantees free source form
23    let b:fortran_fixed_source = 0
24  elseif exists("fortran_fixed_source")
25    " User guarantees fixed source form
26    let b:fortran_fixed_source = 1
27  else
28    " f90 and f95 allow both fixed and free source form
29    " assume fixed source form unless signs of free source form
30    " are detected in the first five columns of the first 250 lines
31    " Detection becomes more accurate and time-consuming if more lines
32    " are checked. Increase the limit below if you keep lots of comments at
33    " the very top of each file and you have a fast computer
34    let s:lmax = 250
35    if ( s:lmax > line("$") )
36      let s:lmax = line("$")
37    endif
38    let b:fortran_fixed_source = 1
39    let s:ln=1
40    while s:ln <= s:lmax
41      let s:test = strpart(getline(s:ln),0,5)
42      if s:test[0] !~ '[Cc*!#]' && s:test !~ '^ \+[!#]' && s:test =~ '[^ 0-9\t]'
43	let b:fortran_fixed_source = 0
44	break
45      endif
46      let s:ln = s:ln + 1
47    endwhile
48  endif
49endif
50
51" Set comments and textwidth according to source type
52if (b:fortran_fixed_source == 1)
53  setlocal comments=:!,:*,:C
54  " Fixed format requires a textwidth of 72 for code
55  setlocal tw=72
56  " If you need to add "&" on continued lines so that the code is
57  " compatible with both free and fixed format, then you should do so
58  " in column 73 and uncomment the next line
59  " setlocal tw=73
60else
61  setlocal comments=:!
62  " Free format allows a textwidth of 132 for code but 80 is more usual
63  setlocal tw=80
64endif
65
66" Set commentstring for foldmethod=marker
67setlocal cms=!%s
68
69" Tabs are not a good idea in Fortran so the default is to expand tabs
70if !exists("fortran_have_tabs")
71  setlocal expandtab
72endif
73
74" Set 'formatoptions' to break comment and text lines but allow long lines
75setlocal fo+=tcql
76
77setlocal include=^\\c#\\=\\s*include\\s\\+
78setlocal suffixesadd+=.f95,.f90,.for,.f,.F,.f77,.ftn,.fpp
79
80let s:cposet=&cpoptions
81set cpoptions-=C
82
83" Define patterns for the matchit plugin
84if !exists("b:match_words")
85  let s:notend = '\%(\<end\s\+\)\@<!'
86  let s:notselect = '\%(\<select\s\+\)\@<!'
87  let s:notelse = '\%(\<end\s\+\|\<else\s\+\)\@<!'
88  let s:notprocedure = '\%(\s\+procedure\>\)\@!'
89  let b:match_ignorecase = 1
90  let b:match_words =
91    \ '\<select\s*case\>:' . s:notselect. '\<case\>:\<end\s*select\>,' .
92    \ s:notelse . '\<if\s*(.\+)\s*then\>:' .
93    \ '\<else\s*\%(if\s*(.\+)\s*then\)\=\>:\<end\s*if\>,'.
94    \ 'do\s\+\(\d\+\):\%(^\s*\)\@<=\1\s,'.
95    \ s:notend . '\<do\>:\<end\s*do\>,'.
96    \ s:notelse . '\<where\>:\<elsewhere\>:\<end\s*where\>,'.
97    \ s:notend . '\<type\s*[^(]:\<end\s*type\>,'.
98    \ s:notend . '\<interface\>:\<end\s*interface\>,'.
99    \ s:notend . '\<subroutine\>:\<end\s*subroutine\>,'.
100    \ s:notend . '\<function\>:\<end\s*function\>,'.
101    \ s:notend . '\<module\>' . s:notprocedure . ':\<end\s*module\>,'.
102    \ s:notend . '\<program\>:\<end\s*program\>'
103endif
104
105" File filters for :browse e
106if has("gui_win32") && !exists("b:browsefilter")
107  let b:browsefilter = "Fortran Files (*.f;*.F;*.for;*.f77;*.f90;*.f95;*.fpp;*.ftn)\t*.f;*.F;*.for;*.f77;*.f90;*.f95;*.fpp;*.ftn\n" .
108    \ "All Files (*.*)\t*.*\n"
109endif
110
111let b:undo_ftplugin = "setl fo< com< tw< cms< et< inc<"
112	\ . "| unlet! b:match_ignorecase b:match_words b:browsefilter"
113
114let &cpoptions=s:cposet
115unlet s:cposet
116
117" vim:sw=2
118