|
0
|
1 " Python indent file |
|
|
2 " Language: Python |
|
|
3 " Maintainer: Eric Mc Sween <em@tomcom.de> |
|
|
4 " Original Author: David Bustos <bustos@caltech.edu> |
|
|
5 " Last Change: 2004 Jun 07 |
|
|
6 |
|
|
7 " Only load this indent file when no other was loaded. |
|
|
8 if exists("b:did_indent") |
|
|
9 finish |
|
|
10 endif |
|
|
11 let b:did_indent = 1 |
|
|
12 |
|
|
13 setlocal expandtab |
|
|
14 setlocal nolisp |
|
|
15 setlocal autoindent |
|
|
16 setlocal indentexpr=GetPythonIndent(v:lnum) |
|
|
17 setlocal indentkeys=!^F,o,O,<:>,0),0],0},=elif,=except,0# |
|
|
18 |
|
|
19 |
|
|
20 let s:maxoff = 50 |
|
|
21 |
|
|
22 " Find backwards the closest open parenthesis/bracket/brace. |
|
|
23 function! s:SearchParensPair() |
|
|
24 let line = line('.') |
|
|
25 let col = col('.') |
|
|
26 |
|
|
27 " Skip strings and comments and don't look too far |
|
|
28 let skip = "line('.') < " . (line - s:maxoff) . " ? dummy :" . |
|
|
29 \ 'synIDattr(synID(line("."), col("."), 0), "name") =~? ' . |
|
|
30 \ '"string\\|comment"' |
|
|
31 |
|
|
32 " Search for parentheses |
|
|
33 call cursor(line, col) |
|
|
34 let parlnum = searchpair('(', '', ')', 'bW', skip) |
|
|
35 let parcol = col('.') |
|
|
36 |
|
|
37 " Search for brackets |
|
|
38 call cursor(line, col) |
|
|
39 let par2lnum = searchpair('\[', '', '\]', 'bW', skip) |
|
|
40 let par2col = col('.') |
|
|
41 |
|
|
42 " Search for braces |
|
|
43 call cursor(line, col) |
|
|
44 let par3lnum = searchpair('{', '', '}', 'bW', skip) |
|
|
45 let par3col = col('.') |
|
|
46 |
|
|
47 " Get the closest match |
|
|
48 if par2lnum > parlnum || (par2lnum == parlnum && par2col > parcol) |
|
|
49 let parlnum = par2lnum |
|
|
50 let parcol = par2col |
|
|
51 endif |
|
|
52 if par3lnum > parlnum || (par3lnum == parlnum && par3col > parcol) |
|
|
53 let parlnum = par3lnum |
|
|
54 let parcol = par3col |
|
|
55 endif |
|
|
56 |
|
|
57 " Put the cursor on the match |
|
|
58 if parlnum > 0 |
|
|
59 call cursor(parlnum, parcol) |
|
|
60 endif |
|
|
61 return parlnum |
|
|
62 endfunction |
|
|
63 |
|
|
64 " Find the start of a multi-line statement |
|
|
65 function! s:StatementStart(lnum) |
|
|
66 let lnum = a:lnum |
|
|
67 while 1 |
|
|
68 if getline(lnum - 1) =~ '\\$' |
|
|
69 let lnum = lnum - 1 |
|
|
70 else |
|
|
71 call cursor(lnum, 1) |
|
|
72 let maybe_lnum = s:SearchParensPair() |
|
|
73 if maybe_lnum < 1 |
|
|
74 return lnum |
|
|
75 else |
|
|
76 let lnum = maybe_lnum |
|
|
77 endif |
|
|
78 endif |
|
|
79 endwhile |
|
|
80 endfunction |
|
|
81 |
|
|
82 " Find the block starter that matches the current line |
|
|
83 function! s:BlockStarter(lnum, block_start_re) |
|
|
84 let lnum = a:lnum |
|
|
85 let maxindent = 10000 " whatever |
|
|
86 while lnum > 1 |
|
|
87 let lnum = prevnonblank(lnum - 1) |
|
|
88 if indent(lnum) < maxindent |
|
|
89 if getline(lnum) =~ a:block_start_re |
|
|
90 return lnum |
|
|
91 else |
|
|
92 let maxindent = indent(lnum) |
|
|
93 " It's not worth going further if we reached the top level |
|
|
94 if maxindent == 0 |
|
|
95 return -1 |
|
|
96 endif |
|
|
97 endif |
|
|
98 endif |
|
|
99 endwhile |
|
|
100 return -1 |
|
|
101 endfunction |
|
|
102 |
|
|
103 function! GetPythonIndent(lnum) |
|
|
104 |
|
|
105 " First line has indent 0 |
|
|
106 if a:lnum == 1 |
|
|
107 return 0 |
|
|
108 endif |
|
|
109 |
|
|
110 " If we can find an open parenthesis/bracket/brace, line up with it. |
|
|
111 call cursor(a:lnum, 1) |
|
|
112 let parlnum = s:SearchParensPair() |
|
|
113 if parlnum > 0 |
|
|
114 let parcol = col('.') |
|
|
115 let closing_paren = match(getline(a:lnum), '^\s*[])}]') != -1 |
|
|
116 if match(getline(parlnum), '[([{]\s*$', parcol - 1) != -1 |
|
|
117 if closing_paren |
|
|
118 return indent(parlnum) |
|
|
119 else |
|
|
120 return indent(parlnum) + &shiftwidth |
|
|
121 endif |
|
|
122 else |
|
|
123 if closing_paren |
|
|
124 return parcol - 1 |
|
|
125 else |
|
|
126 return parcol |
|
|
127 endif |
|
|
128 endif |
|
|
129 endif |
|
|
130 |
|
|
131 " Examine this line |
|
|
132 let thisline = getline(a:lnum) |
|
|
133 let thisindent = indent(a:lnum) |
|
|
134 |
|
|
135 " If the line starts with 'elif' or 'else', line up with 'if' or 'elif' |
|
|
136 if thisline =~ '^\s*\(elif\|else\)\>' |
|
|
137 let bslnum = s:BlockStarter(a:lnum, '^\s*\(if\|elif\)\>') |
|
|
138 if bslnum > 0 |
|
|
139 return indent(bslnum) |
|
|
140 else |
|
|
141 return -1 |
|
|
142 endif |
|
|
143 endif |
|
|
144 |
|
|
145 " If the line starts with 'except' or 'finally', line up with 'try' |
|
|
146 " or 'except' |
|
|
147 if thisline =~ '^\s*\(except\|finally\)\>' |
|
|
148 let bslnum = s:BlockStarter(a:lnum, '^\s*\(try\|except\)\>') |
|
|
149 if bslnum > 0 |
|
|
150 return indent(bslnum) |
|
|
151 else |
|
|
152 return -1 |
|
|
153 endif |
|
|
154 endif |
|
|
155 |
|
|
156 " Examine previous line |
|
|
157 let plnum = a:lnum - 1 |
|
|
158 let pline = getline(plnum) |
|
|
159 let sslnum = s:StatementStart(plnum) |
|
|
160 |
|
|
161 " If the previous line is blank, keep the same indentation |
|
|
162 if pline =~ '^\s*$' |
|
|
163 return -1 |
|
|
164 endif |
|
|
165 |
|
|
166 " If this line is explicitly joined, try to find an indentation that looks |
|
|
167 " good. |
|
|
168 if pline =~ '\\$' |
|
|
169 let compound_statement = '^\s*\(if\|while\|for\s.*\sin\|except\)\s*' |
|
|
170 let maybe_indent = matchend(getline(sslnum), compound_statement) |
|
|
171 if maybe_indent != -1 |
|
|
172 return maybe_indent |
|
|
173 else |
|
|
174 return indent(sslnum) + &sw * 2 |
|
|
175 endif |
|
|
176 endif |
|
|
177 |
|
|
178 " If the previous line ended with a colon, indent relative to |
|
|
179 " statement start. |
|
|
180 if pline =~ ':\s*$' |
|
|
181 return indent(sslnum) + &sw |
|
|
182 endif |
|
|
183 |
|
|
184 " If the previous line was a stop-execution statement or a pass |
|
|
185 if getline(sslnum) =~ '^\s*\(break\|continue\|raise\|return\|pass\)\>' |
|
|
186 " See if the user has already dedented |
|
|
187 if indent(a:lnum) > indent(sslnum) - &sw |
|
|
188 " If not, recommend one dedent |
|
|
189 return indent(sslnum) - &sw |
|
|
190 endif |
|
|
191 " Otherwise, trust the user |
|
|
192 return -1 |
|
|
193 endif |
|
|
194 |
|
|
195 " In all other cases, line up with the start of the previous statement. |
|
|
196 return indent(sslnum) |
|
|
197 endfunction |
