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
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
|
" Vim indent file
" Language: Python
" Maintainer: Bram Moolenaar <Bram@vim.org>
" Original Author: David Bustos <bustos@caltech.edu>
" Last Change: 2003 Sep 08
" Only load this indent file when no other was loaded.
if exists("b:did_indent")
finish
endif
let b:did_indent = 1
" Some preliminary settings
setlocal nolisp " Make sure lisp indenting doesn't supersede us
setlocal autoindent " indentexpr isn't much help otherwise
setlocal indentexpr=GetPythonIndent(v:lnum)
setlocal indentkeys+=<:>,=elif,=except
" Only define the function once.
if exists("*GetPythonIndent")
finish
endif
let s:maxoff = 50 " maximum number of lines to look backwards for ()
function GetPythonIndent(lnum)
" If this line is explicitly joined: If the previous line was also joined,
" line it up with that one, otherwise add two 'shiftwidth'
if getline(a:lnum - 1) =~ '\\$'
if a:lnum > 1 && getline(a:lnum - 2) =~ '\\$'
return indent(a:lnum - 1)
endif
return indent(a:lnum - 1) + (&sw * 2)
endif
" If the start of the line is in a string don't change the indent.
if has('syntax_items')
\ && synIDattr(synID(a:lnum, 1, 1), "name") == "pythonString"
return -1
endif
" Search backwards for the previous non-empty line.
let plnum = prevnonblank(v:lnum - 1)
if plnum == 0
" This is the first non-empty line, use zero indent.
return 0
endif
" If the previous line is inside parenthesis, use the indent of the starting
" line.
" Trick: use the non-existing "dummy" variable to break out of the loop when
" going too far back.
call cursor(plnum, 1)
let parlnum = searchpair('(', '', ')', 'nbW',
\ "line('.') < " . (plnum - s:maxoff) . " ? dummy :"
\ . " synIDattr(synID(line('.'), col('.'), 1), 'name')"
\ . " =~ 'python\\(Comment\\|String\\)'")
if parlnum > 0
let plindent = indent(parlnum)
let plnumstart = parlnum
else
let plindent = indent(plnum)
let plnumstart = plnum
endif
" When inside parenthesis: If at the first line below the parenthesis add
" two 'shiftwidth', otherwise same as previous line.
" i = (a
" + b
" + c)
call cursor(a:lnum, 1)
let p = searchpair('(', '', ')', 'bW',
\ "line('.') < " . (a:lnum - s:maxoff) . " ? dummy :"
\ . " synIDattr(synID(line('.'), col('.'), 1), 'name')"
\ . " =~ 'python\\(Comment\\|String\\)'")
if p > 0
if p == plnum
" When the start is inside parenthesis, only indent one 'shiftwidth'.
let pp = searchpair('(', '', ')', 'bW',
\ "line('.') < " . (a:lnum - s:maxoff) . " ? dummy :"
\ . " synIDattr(synID(line('.'), col('.'), 1), 'name')"
\ . " =~ 'python\\(Comment\\|String\\)'")
if pp > 0
return indent(plnum) + &sw
endif
return indent(plnum) + (&sw * 2)
endif
if plnumstart == p
return indent(plnum)
endif
return plindent
endif
" Get the line and remove a trailing comment.
" Use syntax highlighting attributes when possible.
let pline = getline(plnum)
let pline_len = strlen(pline)
let col = 0
while col < pline_len
if pline[col] == '#' && (!has('syntax_items')
\ || synIDattr(synID(plnum, col + 1, 1), "name") == "pythonComment")
let pline = strpart(pline, 0, col)
break
endif
let col = col + 1
endwhile
" If the previous line ended with a colon, indent this line
if pline =~ ':\s*$'
return plindent + &sw
endif
" If the previous line was a stop-execution statement...
if getline(plnum) =~ '^\s*\(break\|continue\|raise\|return\)\>'
" See if the user has already dedented
if indent(a:lnum) > indent(plnum) - &sw
" If not, recommend one dedent
return indent(plnum) - &sw
endif
" Otherwise, trust the user
return -1
endif
" If the current line begins with a keyword that lines up with "try"
if getline(a:lnum) =~ '^\s*\(except\|finally\)\>'
let lnum = a:lnum - 1
while lnum >= 1
echomsg 'got here'
if getline(lnum) =~ '^\s*\(try\|except\)\>'
let ind = indent(lnum)
echomsg 'got here, indent is ' . ind
if ind >= indent(a:lnum)
return -1 " indent is already less than this
endif
return ind " line up with previous try or except
endif
let lnum = lnum - 1
endwhile
echomsg 'got to the end'
return -1 " no matching "try"!
endif
" If the current line begins with a header keyword, dedent
if getline(a:lnum) =~ '^\s*\(elif\|else\)\>'
" Unless the previous line was a one-liner
if getline(plnumstart) =~ '^\s*\(for\|if\|try\)\>'
return plindent
endif
" Or the user has already dedented
if indent(a:lnum) <= plindent - &sw
return -1
endif
return plindent - &sw
endif
" When after a () construct we probably want to go back to the start line.
" a = (b
" + c)
" here
if parlnum > 0
return plindent
endif
return -1
endfunction
" vim:sw=2
|
