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
|
" Vim indent file
" Language: SAS
" Maintainer: Zhen-Huan Hu <wildkeny@gmail.com>
" Version: 3.0.3
" Last Change: Jun 26, 2018
if exists("b:did_indent")
finish
endif
let b:did_indent = 1
setlocal indentexpr=GetSASIndent()
setlocal indentkeys+=;,=~data,=~proc,=~macro
if exists("*GetSASIndent")
finish
endif
let s:cpo_save = &cpo
set cpo&vim
" Regex that captures the start of a data/proc section
let s:section_str = '\v%(^|;)\s*%(data|proc)>'
" Regex that captures the end of a run-processing section
let s:section_run = '\v%(^|;)\s*run\s*;'
" Regex that captures the end of a data/proc section
let s:section_end = '\v%(^|;)\s*%(quit|enddata)\s*;'
" Regex that captures the start of a control block (anything inside a section)
let s:block_str = '\v<%(do>%([^;]+<%(to|over|while)>[^;]+)=|%(compute|define\s+%(column|footer|header|style|table|tagset|crosstabs|statgraph)|edit|layout|method|select)>[^;]+|begingraph)\s*;'
" Regex that captures the end of a control block (anything inside a section)
let s:block_end = '\v<%(end|endcomp|endlayout|endgraph)\s*;'
" Regex that captures the start of a macro
let s:macro_str = '\v%(^|;)\s*\%macro>'
" Regex that captures the end of a macro
let s:macro_end = '\v%(^|;)\s*\%mend\s*;'
" Regex that defines the end of the program
let s:program_end = '\v%(^|;)\s*endsas\s*;'
" List of procs supporting run-processing
let s:run_processing_procs = [
\ 'catalog', 'chart', 'datasets', 'document', 'ds2', 'plot', 'sql',
\ 'gareabar', 'gbarline', 'gchart', 'gkpi', 'gmap', 'gplot', 'gradar', 'greplay', 'gslide', 'gtile',
\ 'anova', 'arima', 'catmod', 'factex', 'glm', 'model', 'optex', 'plan', 'reg',
\ 'iml',
\ ]
" Find the line number of previous keyword defined by the regex
function! s:PrevMatch(lnum, regex)
let prev_lnum = prevnonblank(a:lnum - 1)
while prev_lnum > 0
let prev_line = getline(prev_lnum)
if prev_line =~? a:regex
break
else
let prev_lnum = prevnonblank(prev_lnum - 1)
endif
endwhile
return prev_lnum
endfunction
" Main function
function! GetSASIndent()
let prev_lnum = prevnonblank(v:lnum - 1)
if prev_lnum ==# 0
" Leave the indentation of the first line unchanged
return indent(1)
else
let prev_line = getline(prev_lnum)
" Previous non-blank line contains the start of a macro/section/block
" while not the end of a macro/section/block (at the same line)
if (prev_line =~? s:section_str && prev_line !~? s:section_run && prev_line !~? s:section_end) ||
\ (prev_line =~? s:block_str && prev_line !~? s:block_end) ||
\ (prev_line =~? s:macro_str && prev_line !~? s:macro_end)
let ind = indent(prev_lnum) + shiftwidth()
elseif prev_line =~? s:section_run && prev_line !~? s:section_end
let prev_section_str_lnum = s:PrevMatch(v:lnum, s:section_str)
let prev_section_end_lnum = max([
\ s:PrevMatch(v:lnum, s:section_end),
\ s:PrevMatch(v:lnum, s:macro_end ),
\ s:PrevMatch(v:lnum, s:program_end)])
" Check if the section supports run-processing
if prev_section_end_lnum < prev_section_str_lnum &&
\ getline(prev_section_str_lnum) =~? '\v%(^|;)\s*proc\s+%(' .
\ join(s:run_processing_procs, '|') . ')>'
let ind = indent(prev_lnum) + shiftwidth()
else
let ind = indent(prev_lnum)
endif
else
let ind = indent(prev_lnum)
endif
endif
" Re-adjustments based on the inputs of the current line
let curr_line = getline(v:lnum)
if curr_line =~? s:program_end
" End of the program
" Same indentation as the first non-blank line
return indent(nextnonblank(1))
elseif curr_line =~? s:macro_end
" Current line is the end of a macro
" Match the indentation of the start of the macro
return indent(s:PrevMatch(v:lnum, s:macro_str))
elseif curr_line =~? s:block_end && curr_line !~? s:block_str
" Re-adjust if current line is the end of a block
" while not the beginning of a block (at the same line)
" Returning the indent of previous block start directly
" would not work due to nesting
let ind = ind - shiftwidth()
elseif curr_line =~? s:section_str || curr_line =~? s:section_run || curr_line =~? s:section_end
" Re-adjust if current line is the start/end of a section
" since the end of a section could be inexplicit
let prev_section_str_lnum = s:PrevMatch(v:lnum, s:section_str)
" Check if the previous section supports run-processing
if getline(prev_section_str_lnum) =~? '\v%(^|;)\s*proc\s+%(' .
\ join(s:run_processing_procs, '|') . ')>'
let prev_section_end_lnum = max([
\ s:PrevMatch(v:lnum, s:section_end),
\ s:PrevMatch(v:lnum, s:macro_end ),
\ s:PrevMatch(v:lnum, s:program_end)])
else
let prev_section_end_lnum = max([
\ s:PrevMatch(v:lnum, s:section_end),
\ s:PrevMatch(v:lnum, s:section_run),
\ s:PrevMatch(v:lnum, s:macro_end ),
\ s:PrevMatch(v:lnum, s:program_end)])
endif
if prev_section_end_lnum < prev_section_str_lnum
let ind = ind - shiftwidth()
endif
endif
return ind
endfunction
let &cpo = s:cpo_save
unlet s:cpo_save
|
