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- " Description: VisualBasic / SaxBasic indenter
- " Author: Johannes Zellner <johannes@zellner.org>
- " URL: http://www.zellner.org/vim/indent/vb.vim
- " Last Change: Wed, 22 Aug 2001 16:31:30 W. Europe Standard Time
-
- if exists("b:did_indent")
- finish
- endif
- let b:did_indent = 1
-
- setlocal indentexpr=VbGetIndent(v:lnum)
- setlocal indentkeys&
- setlocal indentkeys+==else,=Else,=end,=End,=wend,=Wend,=case,=Case,=next,=Next,=select,=Select,<:>
- " setlocal indentkeys-=0#
-
- " Only define the function once.
- if exists("*VbGetIndent")
- finish
- endif
-
- fun! VbGetIndent(lnum)
- " labels and preprocessor get zero indent immediately
- let this_line = getline(a:lnum)
- let LABELS_OR_PREPROC = '^\s*\(\<\k\+\>:\s*$\|#.*\)'
- if this_line =~? LABELS_OR_PREPROC
- return 0
- endif
-
- " Find a non-blank line above the current line.
- " Skip over labels and preprocessor directives.
- let lnum = a: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
-
- let ind = indent(lnum)
-
- " Add
- if previous_line =~? '^\s*\<\(begin\|\(private\s\+\)\=\(function\|sub\)\|select\|case\|default\|if\>.\{-}\<then\>\s*\|else\|do\|for\|while\)'
- let ind = ind + &sw
- endif
-
- " Subtract
- if this_line =~? '^\s*\<end\>\s\+\<select\>'
- if previous_line !~? '^\s*\<select\>'
- let ind = ind - 2 * &sw
- else
- " this case is for an empty 'select' -- 'end select'
- " (w/o any case statements) like:
- "
- " select case readwrite
- " end select
- let ind = ind - &sw
- endif
- elseif this_line =~? '^\s*\<\(end\|else\|until\|loop\|next\|wend\)'
- let ind = ind - &sw
- elseif this_line =~? '^\s*\<\(case\|default\)\>'
- if previous_line !~? '^\s*\<select\>'
- let ind = ind - &sw
- endif
- endif
-
- return ind
- endfun
-