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Editing: sas.vim
" Vim indent file " Language: SAS " Maintainer: Zhen-Huan Hu <wildkeny@gmail.com> " Version: 3.0.1 " Last Change: Mar 13, 2017 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)>[^;]+)=|%(define|layout|method|select)>[^;]+|begingraph)\s*;' " Regex that captures the end of a control block (anything inside a section) let s:block_end = '\v<%(end|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) + &sts 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) + &sts 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 - &sts 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 - &sts endif endif return ind endfunction let &cpo = s:cpo_save unlet s:cpo_save
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