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Annotation of rpl/vim/indent/rpl.vim, revision 1.3

1.1       bertrand    1: " Vim indent file
                      2: " Language:    RPL/2
                      3: " Version: 0.3
                      4: " Last Change: 2005 October 22
                      5: " Maintainer:  BERTRAND Joël <joel.bertrand@systella.fr>
                      6: 
                      7: " Only load this indent file when no other was loaded.
                      8: if exists("b:did_indent")
                      9:   finish
                     10: endif
                     11: let b:did_indent = 1
                     12: 
                     13: setlocal indentkeys+==~end,=~case,=~if,=~then,=~else,=~do,=~until,=~while,=~repeat,=~select,=~default,=~for,=~start,=~next,=~step,<<>,<>>
                     14: 
                     15: " Define the appropriate indent function but only once
                     16: setlocal indentexpr=RplGetFreeIndent()
                     17: if exists("*RplGetFreeIndent")
                     18:   finish
                     19: endif
                     20: 
                     21: function RplGetIndent(lnum)
                     22:   let ind = indent(a:lnum)
                     23:   let prevline=getline(a:lnum)
                     24:   " Strip tail comment
                     25:   let prevstat=substitute(prevline, '!.*$', '', '')
                     26: 
                     27:   " Add a shiftwidth to statements following if, iferr, then, else, elseif,
                     28:   " case, select, default, do, until, while, repeat, for, start
                     29:   if prevstat =~? '\<\(if\|iferr\|do\|while\)\>' && prevstat =~? '\<end\>'
                     30:   elseif prevstat =~? '\(^\|\s\+\)<<\($\|\s\+\)' && prevstat =~? '\s\+>>\($\|\s\+\)'
                     31:   elseif prevstat =~? '\<\(if\|iferr\|then\|else\|elseif\|select\|case\|do\|until\|while\|repeat\|for\|start\|default\)\>' || prevstat =~? '\(^\|\s\+\)<<\($\|\s\+\)'
                     32:     let ind = ind + &sw
                     33:   endif
                     34: 
                     35:   if prevstat =~? '/\*'
                     36:     let ind = ind + 1
                     37:   endif
                     38: 
                     39:   " Subtract a shiftwidth from then, else, elseif, end, until, repeat, next,
                     40:   " step
                     41:   let line = getline(v:lnum)
                     42:   if line =~? '^\s*\(then\|else\|elseif\|until\|repeat\|next\|step\|default\|end\)\>'
                     43:     let ind = ind - &sw
                     44:   elseif line =~? '^\s*>>\($\|\s\+\)'
                     45:     let ind = ind - &sw
                     46:   endif
                     47: 
                     48:   if prevstat =~? '\*/'
                     49:     let ind = ind - 1
                     50:   endif
                     51:   return ind
                     52: endfunction
                     53: 
                     54: function RplGetFreeIndent()
                     55:   " Find the previous non-blank line
                     56:   let lnum = prevnonblank(v:lnum - 1)
                     57: 
                     58:   " Use zero indent at the top of the file
                     59:   if lnum == 0
                     60:     return 0
                     61:   endif
                     62: 
                     63:   let ind=RplGetIndent(lnum)
                     64:   return ind
                     65: endfunction
                     66: 
                     67: " vim:sw=2 tw=130