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" Vim indent file " Language: VisualBasic (ft=vb) / Basic (ft=basic) / SaxBasic (ft=vb) " Author: Johannes Zellner <johannes@zellner.org> " Maintainer: Michael Soyka (mssr953@gmail.com) " Last Change: Fri, 18 Jun 2004 07:22:42 CEST " Small update 2010 Jul 28 by Maxim Kim " 2022/12/15: add support for multiline statements. " 2022/12/21: move VbGetIndent from global to script-local scope " 2022/12/26: recognize "Type" keyword if exists("b:did_indent") finish endif let b:did_indent = 1 setlocal autoindent setlocal indentexpr=s:VbGetIndent(v:lnum) setlocal indentkeys& setlocal indentkeys+==~else,=~elseif,=~end,=~wend,=~case,=~next,=~select,=~loop let b:undo_indent = "set ai< indentexpr< indentkeys<" " Only define the function once. if exists("*s:VbGetIndent") finish endif function s:VbGetIndent(lnum) let this_lnum = a:lnum let this_line = getline(this_lnum) " labels and preprocessor get zero indent immediately let LABELS_OR_PREPROC = '^\s*\(\<\k\+\>:\s*$\|#.*\)' if this_line =~? LABELS_OR_PREPROC return 0 endif " Get the current value of "shiftwidth" let bShiftwidth = shiftwidth() " Find a non-blank line above the current line. " Skip over labels and preprocessor directives. let lnum = this_lnum while lnum > 0 let lnum = prevnonblank(lnum - 1) let previous_line = getline(lnum) if previous_line !~? LABELS_OR_PREPROC break endif endwhile " Hit the start of the file, use zero indent. if lnum == 0 return 0 endif " Variable "previous_line" now contains the text in buffer line "lnum". " Multi-line statements have the underscore character at end-of-line: " " object.method(arguments, _ " arguments, _ " arguments) " " and require extra logic to determine the correct indentation. " " Case 1: Line "lnum" is the first line of a multiline statement. " Line "lnum" will have a trailing underscore character " but the preceding non-blank line does not. " Line "this_lnum" will be indented relative to "lnum". " " Case 2: Line "lnum" is the last line of a multiline statement. " Line "lnum" will not have a trailing underscore character " but the preceding non-blank line will. " Line "this_lnum" will have the same indentation as the starting " line of the multiline statement. " " Case 3: Line "lnum" is neither the first nor last line. " Lines "lnum" and "lnum-1" will have a trailing underscore " character. " Line "this_lnum" will have the same indentation as the preceding " line. " " No matter which case it is, the starting line of the statement must be " found. It will be assumed that multiline statements cannot have " intermingled comments, statement labels, preprocessor directives or " blank lines. " let lnum_is_continued = (previous_line =~ '_$') if lnum > 1 let before_lnum = prevnonblank(lnum-1) let before_previous_line = getline(before_lnum) else let before_lnum = 0 let before_previous_line = "" endif if before_previous_line !~ '_$' " Variable "previous_line" contains the start of a statement. " let ind = indent(lnum) if lnum_is_continued let ind += bShiftwidth endif elseif ! lnum_is_continued " Line "lnum" contains the last line of a multiline statement. " Need to find where this multiline statement begins " while before_lnum > 0 let before_lnum -= 1 if getline(before_lnum) !~ '_$' let before_lnum += 1 break endif endwhile if before_lnum == 0 let before_lnum = 1 endif let previous_line = getline(before_lnum) let ind = indent(before_lnum) else " Line "lnum" is not the first or last line of a multiline statement. " let ind = indent(lnum) endif " Add if previous_line =~? '^\s*\<\(begin\|\%(\%(private\|public\|friend\)\s\+\)\=\%(function\|sub\|property\|enum\|type\)\|select\|case\|default\|if\|else\|elseif\|do\|for\|while\|with\)\>' let ind = ind + bShiftwidth endif " Subtract if this_line =~? '^\s*\<end\>\s\+\<select\>' if previous_line !~? '^\s*\<select\>' let ind = ind - 2 * bShiftwidth else " this case is for an empty 'select' -- 'end select' " (w/o any case statements) like: " " select case readwrite " end select let ind = ind - bShiftwidth endif elseif this_line =~? '^\s*\<\(end\|else\|elseif\|until\|loop\|next\|wend\)\>' let ind = ind - bShiftwidth elseif this_line =~? '^\s*\<\(case\|default\)\>' if previous_line !~? '^\s*\<select\>' let ind = ind - bShiftwidth endif endif return ind endfunction " vim:sw=4