1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
|
" Vim ftplugin file
" Language: Erlang
" Author: Oscar Hellström <oscar@oscarh.net>
" Contributors: Ricardo Catalinas Jiménez <jimenezrick@gmail.com>
" Eduardo Lopez (http://github.com/tapichu)
" License: Vim license
" Version: 2011/11/21
if exists('b:did_ftplugin')
finish
else
let b:did_ftplugin = 1
endif
if exists('s:did_function_definitions')
call s:SetErlangOptions()
finish
else
let s:did_function_definitions = 1
endif
if !exists('g:erlang_keywordprg')
let g:erlang_keywordprg = 'erl -man'
endif
if !exists('g:erlang_folding')
let g:erlang_folding = 0
endif
" Local settings
function s:SetErlangOptions()
compiler erlang
if version >= 700
setlocal omnifunc=erlang_complete#Complete
endif
if g:erlang_folding
setlocal foldmethod=expr
setlocal foldexpr=GetErlangFold(v:lnum)
setlocal foldtext=ErlangFoldText()
endif
setlocal comments=:%%%,:%%,:%
setlocal commentstring=%%s
setlocal formatoptions+=ro
let &l:keywordprg = g:erlang_keywordprg
endfunction
" Define folding functions
if !exists('*GetErlangFold')
" Folding params
let s:erlang_fun_begin = '^\a\w*(.*$'
let s:erlang_fun_end = '^[^%]*\.\s*\(%.*\)\?$'
let s:erlang_blank_line = '^\s*\(%.*\)\?$'
" Auxiliary fold functions
function s:GetNextNonBlank(lnum)
let lnum = nextnonblank(a:lnum + 1)
let line = getline(lnum)
while line =~ s:erlang_blank_line && 0 != lnum
let lnum = nextnonblank(lnum + 1)
let line = getline(lnum)
endwhile
return lnum
endfunction
function s:GetFunName(str)
return matchstr(a:str, '^\a\w*(\@=')
endfunction
function s:GetFunArgs(str, lnum)
let str = a:str
let lnum = a:lnum
while str !~ '->\s*\(%.*\)\?$'
let lnum = s:GetNextNonBlank(lnum)
if 0 == lnum " EOF
return ''
endif
let str .= getline(lnum)
endwhile
return matchstr(str,
\ '\(^(\s*\)\@<=.*\(\s*)\(\s\+when\s\+.*\)\?\s\+->\s*\(%.*\)\?$\)\@=')
endfunction
function s:CountFunArgs(arguments)
let pos = 0
let ac = 0 " arg count
let arguments = a:arguments
" Change list / tuples into just one A(rgument)
let erlang_tuple = '{\([A-Za-z_,|=\-\[\]]\|\s\)*}'
let erlang_list = '\[\([A-Za-z_,|=\-{}]\|\s\)*\]'
" FIXME: Use searchpair?
while arguments =~ erlang_tuple
let arguments = substitute(arguments, erlang_tuple, 'A', 'g')
endwhile
" FIXME: Use searchpair?
while arguments =~ erlang_list
let arguments = substitute(arguments, erlang_list, 'A', 'g')
endwhile
let len = strlen(arguments)
while pos < len && pos > -1
let ac += 1
let pos = matchend(arguments, ',\s*', pos)
endwhile
return ac
endfunction
" Main fold function
function GetErlangFold(lnum)
let lnum = a:lnum
let line = getline(lnum)
if line =~ s:erlang_fun_end
return '<1'
endif
if line =~ s:erlang_fun_begin && foldlevel(lnum - 1) == 1
return '1'
endif
if line =~ s:erlang_fun_begin
return '>1'
endif
return '='
endfunction
" Erlang fold description (foldtext function)
function ErlangFoldText()
let foldlen = v:foldend - v:foldstart
if 1 < foldlen
let lines = 'lines'
else
let lines = 'line'
endif
let line = getline(v:foldstart)
let name = s:GetFunName(line)
let arguments = s:GetFunArgs(strpart(line, strlen(name)), v:foldstart)
let argcount = s:CountFunArgs(arguments)
let retval = '+' . v:folddashes . ' ' . name . '/' . argcount
let retval .= ' (' . foldlen . ' ' . lines . ')'
return retval
endfunction
endif
call s:SetErlangOptions()
|
