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comparison .vim/indent/python.vim @ 0:c30d68fbd368
Initial import from svn.
author | Augie Fackler <durin42@gmail.com> |
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date | Wed, 26 Nov 2008 10:56:09 -0600 |
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-1:000000000000 | 0:c30d68fbd368 |
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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 |