xref: /vim-8.2.3635/runtime/ftplugin/fortran.vim (revision ca63501f)
1" Vim settings file
2" Language:	Fortran 2008 (and older: Fortran 2003, 95, 90, 77, 66)
3" Version:	0.49
4" Last Change:	2013 Oct. 01
5" Maintainer:	Ajit J. Thakkar <[email protected]>; <http://www2.unb.ca/~ajit/>
6" Usage:	Do :help fortran-plugin from Vim
7" Credits:
8" Useful suggestions were made by Stefano Zacchiroli, Hendrik Merx, Ben
9" Fritz, and David Barnett.
10
11" Only do these settings when not done yet for this buffer
12if exists("b:did_ftplugin")
13  finish
14endif
15
16let s:cposet=&cpoptions
17set cpoptions&vim
18
19" Don't do other file type settings for this buffer
20let b:did_ftplugin = 1
21
22" Determine whether this is a fixed or free format source file
23" if this hasn't been done yet
24if !exists("b:fortran_fixed_source")
25  if exists("fortran_free_source")
26    " User guarantees free source form
27    let b:fortran_fixed_source = 0
28  elseif exists("fortran_fixed_source")
29    " User guarantees fixed source form
30    let b:fortran_fixed_source = 1
31  else
32    " Modern Fortran allows both fixed and free source form
33    " assume fixed source form unless signs of free source form
34    " are detected in the first five columns of the first s:lmax lines
35    " Detection becomes more accurate and time-consuming if more lines
36    " are checked. Increase the limit below if you keep lots of comments at
37    " the very top of each file and you have a fast computer
38    let s:lmax = 500
39    if ( s:lmax > line("$") )
40      let s:lmax = line("$")
41    endif
42    let b:fortran_fixed_source = 1
43    let s:ln=1
44    while s:ln <= s:lmax
45      let s:test = strpart(getline(s:ln),0,5)
46      if s:test !~ '^[Cc*]' && s:test !~ '^ *[!#]' && s:test =~ '[^ 0-9\t]' && s:test !~ '^[ 0-9]*\t'
47	let b:fortran_fixed_source = 0
48	break
49      endif
50      let s:ln = s:ln + 1
51    endwhile
52    unlet! s:lmax s:ln s:test
53  endif
54endif
55
56" Set comments and textwidth according to source type
57if (b:fortran_fixed_source == 1)
58  setlocal comments=:!,:*,:C
59  " Fixed format requires a textwidth of 72 for code
60  setlocal tw=72
61  " If you need to add "&" on continued lines so that the code is
62  " compatible with both free and fixed format, then you should do so
63  " in column 73 and uncomment the next line
64  " setlocal tw=73
65else
66  setlocal comments=:!
67  " Free format allows a textwidth of 132
68  setlocal tw=132
69endif
70
71" Set commentstring for foldmethod=marker
72setlocal cms=!%s
73
74" Tabs are not a good idea in Fortran so the default is to expand tabs
75if !exists("fortran_have_tabs")
76  setlocal expandtab
77endif
78
79" Set 'formatoptions' to break text lines
80setlocal fo+=t
81
82setlocal include=^\\c#\\=\\s*include\\s\\+
83setlocal suffixesadd+=.f08,.f03,.f95,.f90,.for,.f,.F,.f77,.ftn,.fpp
84
85" Define patterns for the matchit plugin
86if !exists("b:match_words")
87  let s:notend = '\%(\<end\s\+\)\@<!'
88  let s:notselect = '\%(\<select\s\+\)\@<!'
89  let s:notelse = '\%(\<end\s\+\|\<else\s\+\)\@<!'
90  let s:notprocedure = '\%(\s\+procedure\>\)\@!'
91  let b:match_ignorecase = 1
92  let b:match_words =
93    \ '(:),' .
94    \ '\<select\s*case\>:' . s:notselect. '\<case\>:\<end\s*select\>,' .
95    \ s:notelse . '\<if\s*(.\+)\s*then\>:' .
96    \ '\<else\s*\%(if\s*(.\+)\s*then\)\=\>:\<end\s*if\>,'.
97    \ 'do\s\+\(\d\+\):\%(^\s*\)\@<=\1\s,'.
98    \ s:notend . '\<do\>:\<end\s*do\>,'.
99    \ s:notelse . '\<where\>:\<elsewhere\>:\<end\s*where\>,'.
100    \ s:notend . '\<type\s*[^(]:\<end\s*type\>,'.
101    \ s:notend . '\<forall\>:\<end\s*forall\>,'.
102    \ s:notend . '\<associate\>:\<end\s*associate\>,'.
103    \ s:notend . '\<enum\>:\<end\s*enum\>,'.
104    \ s:notend . '\<interface\>:\<end\s*interface\>,'.
105    \ s:notend . '\<subroutine\>:\<end\s*subroutine\>,'.
106    \ s:notend . '\<function\>:\<end\s*function\>,'.
107    \ s:notend . '\<module\>' . s:notprocedure . ':\<end\s*module\>,'.
108    \ s:notend . '\<program\>:\<end\s*program\>'
109endif
110
111" File filters for :browse e
112if has("gui_win32") && !exists("b:browsefilter")
113  let b:browsefilter = "Fortran Files (*.f;*.for;*.f77;*.f90;*.f95;*.f03;*.f08;*.fpp;*.ftn)\t*.f;*.for;*.f77;*.f90;*.f95;*.f03;*.f08;*.fpp;*.ftn\n" .
114    \ "All Files (*.*)\t*.*\n"
115endif
116
117let b:undo_ftplugin = "setl fo< com< tw< cms< et< inc< sua<"
118	\ . "| unlet! b:match_ignorecase b:match_words b:browsefilter"
119
120let &cpoptions=s:cposet
121unlet s:cposet
122
123" vim:sw=2
124