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" Vim indent file " Language: SQL " Maintainer: David Fishburn <dfishburn dot vim at gmail dot com> " Last Change: 2017 Jun 13 " Version: 3.0 " Download: http://vim.sourceforge.net/script.php?script_id=495 " Notes: " Indenting keywords are based on Oracle and Sybase Adaptive Server " Anywhere (ASA). Test indenting was done with ASA stored procedures and " fuctions and Oracle packages which contain stored procedures and " functions. " This has not been tested against Microsoft SQL Server or " Sybase Adaptive Server Enterprise (ASE) which use the Transact-SQL " syntax. That syntax does not have end tags for IF's, which makes " indenting more difficult. " " Known Issues: " The Oracle MERGE statement does not have an end tag associated with " it, this can leave the indent hanging to the right one too many. " " History: " 3.0 (Dec 2012) " Added cpo check " " 2.0 " Added the FOR keyword to SQLBlockStart to handle (Alec Tica): " for i in 1..100 loop " |<-- I expect to have indentation here " end loop; " " Only load this indent file when no other was loaded. if exists("b:did_indent") finish endif let b:did_indent = 1 let b:current_indent = "sqlanywhere" setlocal indentkeys-=0{ setlocal indentkeys-=0} setlocal indentkeys-=: setlocal indentkeys-=0# setlocal indentkeys-=e " This indicates formatting should take place when one of these " expressions is used. These expressions would normally be something " you would type at the BEGINNING of a line " SQL is generally case insensitive, so this files assumes that " These keywords are something that would trigger an indent LEFT, not " an indent right, since the SQLBlockStart is used for those keywords setlocal indentkeys+==~end,=~else,=~elseif,=~elsif,0=~when,0=) " GetSQLIndent is executed whenever one of the expressions " in the indentkeys is typed setlocal indentexpr=GetSQLIndent() " Only define the functions once. if exists("*GetSQLIndent") finish endif let s:keepcpo= &cpo set cpo&vim " List of all the statements that start a new block. " These are typically words that start a line. " IS is excluded, since it is difficult to determine when the " ending block is (especially for procedures/functions). let s:SQLBlockStart = '^\s*\%('. \ 'if\|else\|elseif\|elsif\|'. \ 'while\|loop\|do\|for\|'. \ 'begin\|'. \ 'case\|when\|merge\|exception'. \ '\)\>' let s:SQLBlockEnd = '^\s*\(end\)\>' " The indent level is also based on unmatched paranethesis " If a line has an extra "(" increase the indent " If a line has an extra ")" decrease the indent function! s:CountUnbalancedParan( line, paran_to_check ) let l = a:line let lp = substitute(l, '[^(]', '', 'g') let l = a:line let rp = substitute(l, '[^)]', '', 'g') if a:paran_to_check =~ ')' " echom 'CountUnbalancedParan ) returning: ' . " \ (strlen(rp) - strlen(lp)) return (strlen(rp) - strlen(lp)) elseif a:paran_to_check =~ '(' " echom 'CountUnbalancedParan ( returning: ' . " \ (strlen(lp) - strlen(rp)) return (strlen(lp) - strlen(rp)) else " echom 'CountUnbalancedParan unknown paran to check: ' . " \ a:paran_to_check return 0 endif endfunction " Unindent commands based on previous indent level function! s:CheckToIgnoreRightParan( prev_lnum, num_levels ) let lnum = a:prev_lnum let line = getline(lnum) let ends = 0 let num_right_paran = a:num_levels let ignore_paran = 0 let vircol = 1 while num_right_paran > 0 silent! exec 'norm! '.lnum."G\<bar>".vircol."\<bar>" let right_paran = search( ')', 'W' ) if right_paran != lnum " This should not happen since there should be at least " num_right_paran matches for this line break endif let vircol = virtcol(".") " if getline(".") =~ '^)' let matching_paran = searchpair('(', '', ')', 'bW', \ 's:IsColComment(line("."), col("."))') if matching_paran < 1 " No match found " echom 'CTIRP - no match found, ignoring' break endif if matching_paran == lnum " This was not an unmatched parantenses, start the search again " again after this column " echom 'CTIRP - same line match, ignoring' continue endif " echom 'CTIRP - match: ' . line(".") . ' ' . getline(".") if getline(matching_paran) =~? '\(if\|while\)\>' " echom 'CTIRP - if/while ignored: ' . line(".") . ' ' . getline(".") let ignore_paran = ignore_paran + 1 endif " One match found, decrease and check for further matches let num_right_paran = num_right_paran - 1 endwhile " Fallback - just move back one " return a:prev_indent - shiftwidth() return ignore_paran endfunction " Based on the keyword provided, loop through previous non empty " non comment lines to find the statement that initated the keyword. " Return its indent level " CASE .. " WHEN ... " Should return indent level of CASE " EXCEPTION .. " WHEN ... " something; " WHEN ... " Should return indent level of exception. function! s:GetStmtStarterIndent( keyword, curr_lnum ) let lnum = a:curr_lnum " Default - reduce indent by 1 let ind = indent(a:curr_lnum) - shiftwidth() if a:keyword =~? 'end' exec 'normal! ^' let stmts = '^\s*\%('. \ '\<begin\>\|' . \ '\%(\%(\<end\s\+\)\@<!\<loop\>\)\|' . \ '\%(\%(\<end\s\+\)\@<!\<case\>\)\|' . \ '\%(\%(\<end\s\+\)\@<!\<for\>\)\|' . \ '\%(\%(\<end\s\+\)\@<!\<if\>\)'. \ '\)' let matching_lnum = searchpair(stmts, '', '\<end\>\zs', 'bW', \ 's:IsColComment(line("."), col(".")) == 1') exec 'normal! $' if matching_lnum > 0 && matching_lnum < a:curr_lnum let ind = indent(matching_lnum) endif elseif a:keyword =~? 'when' exec 'normal! ^' let matching_lnum = searchpair( \ '\%(\<end\s\+\)\@<!\<case\>\|\<exception\>\|\<merge\>', \ '', \ '\%(\%(\<when\s\+others\>\)\|\%(\<end\s\+case\>\)\)', \ 'bW', \ 's:IsColComment(line("."), col(".")) == 1') exec 'normal! $' if matching_lnum > 0 && matching_lnum < a:curr_lnum let ind = indent(matching_lnum) else let ind = indent(a:curr_lnum) endif endif return ind endfunction " Check if the line is a comment function! s:IsLineComment(lnum) let rc = synIDattr( \ synID(a:lnum, \ match(getline(a:lnum), '\S')+1, 0) \ , "name") \ =~? "comment" return rc endfunction " Check if the column is a comment function! s:IsColComment(lnum, cnum) let rc = synIDattr(synID(a:lnum, a:cnum, 0), "name") \ =~? "comment" return rc endfunction " Instead of returning a column position, return " an appropriate value as a factor of shiftwidth. function! s:ModuloIndent(ind) let ind = a:ind if ind > 0 let modulo = ind % shiftwidth() if modulo > 0 let ind = ind - modulo endif endif return ind endfunction " Find correct indent of a new line based upon the previous line function! GetSQLIndent() let lnum = v:lnum let ind = indent(lnum) " If the current line is a comment, leave the indent as is " Comment out this additional check since it affects the " indenting of =, and will not reindent comments as it should " if s:IsLineComment(lnum) == 1 " return ind " endif " Get previous non-blank line let prevlnum = prevnonblank(lnum - 1) if prevlnum <= 0 return ind endif if s:IsLineComment(prevlnum) == 1 if getline(v:lnum) =~ '^\s*\*' let ind = s:ModuloIndent(indent(prevlnum)) return ind + 1 endif " If the previous line is a comment, then return -1 " to tell Vim to use the formatoptions setting to determine " the indent to use " But only if the next line is blank. This would be true if " the user is typing, but it would not be true if the user " is reindenting the file if getline(v:lnum) =~ '^\s*$' return -1 endif endif " echom 'PREVIOUS INDENT: ' . indent(prevlnum) . ' LINE: ' . getline(prevlnum) " This is the line you just hit return on, it is not the current line " which is new and empty " Based on this line, we can determine how much to indent the new " line " Get default indent (from prev. line) let ind = indent(prevlnum) let prevline = getline(prevlnum) " Now check what's on the previous line to determine if the indent " should be changed, for example IF, BEGIN, should increase the indent " where END IF, END, should decrease the indent. if prevline =~? s:SQLBlockStart " Move indent in let ind = ind + shiftwidth() " echom 'prevl - SQLBlockStart - indent ' . ind . ' line: ' . prevline elseif prevline =~ '[()]' if prevline =~ '(' let num_unmatched_left = s:CountUnbalancedParan( prevline, '(' ) else let num_unmatched_left = 0 endif if prevline =~ ')' let num_unmatched_right = s:CountUnbalancedParan( prevline, ')' ) else let num_unmatched_right = 0 " let num_unmatched_right = s:CountUnbalancedParan( prevline, ')' ) endif if num_unmatched_left > 0 " There is a open left paranethesis " increase indent let ind = ind + ( shiftwidth() * num_unmatched_left ) elseif num_unmatched_right > 0 " if it is an unbalanced paranethesis only unindent if " it was part of a command (ie create table(..) ) " instead of part of an if (ie if (....) then) which should " maintain the indent level let ignore = s:CheckToIgnoreRightParan( prevlnum, num_unmatched_right ) " echom 'prevl - ) unbalanced - CTIRP - ignore: ' . ignore if prevline =~ '^\s*)' let ignore = ignore + 1 " echom 'prevl - begins ) unbalanced ignore: ' . ignore endif if (num_unmatched_right - ignore) > 0 let ind = ind - ( shiftwidth() * (num_unmatched_right - ignore) ) endif endif endif " echom 'CURRENT INDENT: ' . ind . ' LINE: ' . getline(v:lnum) " This is a new blank line since we just typed a carriage return " Check current line; search for simplistic matching start-of-block let line = getline(v:lnum) if line =~? '^\s*els' " Any line when you type else will automatically back up one " ident level (ie else, elseif, elsif) let ind = ind - shiftwidth() " echom 'curr - else - indent ' . ind elseif line =~? '^\s*end\>' let ind = s:GetStmtStarterIndent('end', v:lnum) " General case for end " let ind = ind - shiftwidth() " echom 'curr - end - indent ' . ind elseif line =~? '^\s*when\>' let ind = s:GetStmtStarterIndent('when', v:lnum) " If the WHEN clause is used with a MERGE or EXCEPTION " clause, do not change the indent level, since these " statements do not have a corresponding END statement. " if stmt_starter =~? 'case' " let ind = ind - shiftwidth() " endif " elseif line =~ '^\s*)\s*;\?\s*$' " elseif line =~ '^\s*)' elseif line =~ '^\s*)' let num_unmatched_right = s:CountUnbalancedParan( line, ')' ) let ignore = s:CheckToIgnoreRightParan( v:lnum, num_unmatched_right ) " If the line ends in a ), then reduce the indent " This catches items like: " CREATE TABLE T1( " c1 int, " c2 int " ); " But we do not want to unindent a line like: " IF ( c1 = 1 " AND c2 = 3 ) THEN " let num_unmatched_right = s:CountUnbalancedParan( line, ')' ) " if num_unmatched_right > 0 " elseif strpart( line, strlen(line)-1, 1 ) =~ ')' " let ind = ind - shiftwidth() if line =~ '^\s*)' " let ignore = ignore + 1 " echom 'curr - begins ) unbalanced ignore: ' . ignore endif if (num_unmatched_right - ignore) > 0 let ind = ind - ( shiftwidth() * (num_unmatched_right - ignore) ) endif " endif endif " echom 'final - indent ' . ind return s:ModuloIndent(ind) endfunction " Restore: let &cpo= s:keepcpo unlet s:keepcpo " vim: ts=4 fdm=marker sw=4
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