1" Vim indent file 2" Language: Eiffel 3" Maintainer: Jocelyn Fiat <[email protected]> 4" Previous-Maintainer: David Clarke <[email protected]> 5" Contributions from: Thilo Six 6" $Date: 2004/12/09 21:33:52 $ 7" $Revision: 1.3 $ 8" URL: https://github.com/eiffelhub/vim-eiffel 9 10" Only load this indent file when no other was loaded. 11if exists("b:did_indent") 12 finish 13endif 14let b:did_indent = 1 15 16setlocal indentexpr=GetEiffelIndent() 17setlocal nolisp 18setlocal nosmartindent 19setlocal nocindent 20setlocal autoindent 21setlocal comments=:-- 22setlocal indentkeys+==end,=else,=ensure,=require,=check,=loop,=until 23setlocal indentkeys+==creation,=feature,=inherit,=class,=is,=redefine,=rename,=variant 24setlocal indentkeys+==invariant,=do,=local,=export 25 26let b:undo_indent = "setl smartindent< indentkeys< indentexpr< autoindent< comments< " 27 28" Define some stuff 29" keywords grouped by indenting 30let s:trust_user_indent = '\(+\)\(\s*\(--\).*\)\=$' 31let s:relative_indent = '^\s*\(deferred\|class\|feature\|creation\|inherit\|loop\|from\|until\|if\|else\|elseif\|ensure\|require\|check\|do\|local\|invariant\|variant\|rename\|redefine\|do\|export\)\>' 32let s:outdent = '^\s*\(else\|invariant\|variant\|do\|require\|until\|loop\|local\)\>' 33let s:no_indent = '^\s*\(class\|feature\|creation\|inherit\)\>' 34let s:single_dent = '^[^-]\+[[:alnum:]]\+ is\(\s*\(--\).*\)\=$' 35let s:inheritance_dent = '\s*\(redefine\|rename\|export\)\>' 36 37 38" Only define the function once. 39if exists("*GetEiffelIndent") 40 finish 41endif 42 43let s:keepcpo= &cpo 44set cpo&vim 45 46function GetEiffelIndent() 47 48 " Eiffel Class indenting 49 " 50 " Find a non-blank line above the current line. 51 let lnum = prevnonblank(v:lnum - 1) 52 53 " At the start of the file use zero indent. 54 if lnum == 0 55 return 0 56 endif 57 58 " trust the user's indenting 59 if getline(lnum) =~ s:trust_user_indent 60 return -1 61 endif 62 63 " Add a 'shiftwidth' after lines that start with an indent word 64 let ind = indent(lnum) 65 if getline(lnum) =~ s:relative_indent 66 let ind = ind + &sw 67 endif 68 69 " Indent to single indent 70 if getline(v:lnum) =~ s:single_dent && getline(v:lnum) !~ s:relative_indent 71 \ && getline(v:lnum) !~ '\s*\<\(and\|or\|implies\)\>' 72 let ind = &sw 73 endif 74 75 " Indent to double indent 76 if getline(v:lnum) =~ s:inheritance_dent 77 let ind = 2 * &sw 78 endif 79 80 " Indent line after the first line of the function definition 81 if getline(lnum) =~ s:single_dent 82 let ind = ind + &sw 83 endif 84 85 " The following should always be at the start of a line, no indenting 86 if getline(v:lnum) =~ s:no_indent 87 let ind = 0 88 endif 89 90 " Subtract a 'shiftwidth', if this isn't the first thing after the 'is' 91 " or first thing after the 'do' 92 if getline(v:lnum) =~ s:outdent && getline(v:lnum - 1) !~ s:single_dent 93 \ && getline(v:lnum - 1) !~ '^\s*do\>' 94 let ind = ind - &sw 95 endif 96 97 " Subtract a shiftwidth for end statements 98 if getline(v:lnum) =~ '^\s*end\>' 99 let ind = ind - &sw 100 endif 101 102 " set indent of zero end statements that are at an indent of 3, this should 103 " only ever be the class's end. 104 if getline(v:lnum) =~ '^\s*end\>' && ind == &sw 105 let ind = 0 106 endif 107 108 return ind 109endfunction 110 111let &cpo = s:keepcpo 112unlet s:keepcpo 113 114" vim:sw=2 115