1" Vim indent file 2" Language: Eiffel 3" Maintainer: Jocelyn Fiat <[email protected]> 4" Previous-Maintainer: David Clarke <[email protected]> 5" Contributions from: Takuya Fujiwara 6" Contributions from: Thilo Six 7" $Date: 2017/03/08 06:00:00 $ 8" $Revision: 1.4 $ 9" URL: https://github.com/eiffelhub/vim-eiffel 10 11" Only load this indent file when no other was loaded. 12if exists("b:did_indent") 13 finish 14endif 15let b:did_indent = 1 16 17setlocal indentexpr=GetEiffelIndent() 18setlocal nolisp 19setlocal nosmartindent 20setlocal nocindent 21setlocal autoindent 22setlocal comments=:-- 23setlocal indentkeys+==end,=else,=ensure,=require,=check,=loop,=until 24setlocal indentkeys+==creation,=feature,=inherit,=class,=is,=redefine,=rename,=variant 25setlocal indentkeys+==invariant,=do,=local,=export 26 27let b:undo_indent = "setl smartindent< indentkeys< indentexpr< autoindent< comments< " 28 29" Define some stuff 30" keywords grouped by indenting 31let s:trust_user_indent = '\(+\)\(\s*\(--\).*\)\=$' 32let s:relative_indent = '^\s*\(deferred\|class\|feature\|creation\|inherit\|loop\|from\|across\|until\|if\|else\|elseif\|ensure\|require\|check\|do\|local\|invariant\|variant\|rename\|redefine\|do\|export\)\>' 33let s:outdent = '^\s*\(else\|invariant\|variant\|do\|require\|until\|loop\|local\)\>' 34let s:no_indent = '^\s*\(class\|feature\|creation\|inherit\)\>' 35let s:single_dent = '^[^-]\+[[:alnum:]]\+ is\(\s*\(--\).*\)\=$' 36let s:inheritance_dent = '\s*\(redefine\|rename\|export\)\>' 37 38 39" Only define the function once. 40if exists("*GetEiffelIndent") 41 finish 42endif 43 44let s:keepcpo= &cpo 45set cpo&vim 46 47function GetEiffelIndent() 48 49 " Eiffel Class indenting 50 " 51 " Find a non-blank line above the current line. 52 let lnum = prevnonblank(v:lnum - 1) 53 54 " At the start of the file use zero indent. 55 if lnum == 0 56 return 0 57 endif 58 59 " trust the user's indenting 60 if getline(lnum) =~ s:trust_user_indent 61 return -1 62 endif 63 64 " Add a 'shiftwidth' after lines that start with an indent word 65 let ind = indent(lnum) 66 if getline(lnum) =~ s:relative_indent 67 let ind = ind + shiftwidth() 68 endif 69 70 " Indent to single indent 71 if getline(v:lnum) =~ s:single_dent && getline(v:lnum) !~ s:relative_indent 72 \ && getline(v:lnum) !~ '\s*\<\(and\|or\|implies\)\>' 73 let ind = shiftwidth() 74 endif 75 76 " Indent to double indent 77 if getline(v:lnum) =~ s:inheritance_dent 78 let ind = 2 * shiftwidth() 79 endif 80 81 " Indent line after the first line of the function definition 82 if getline(lnum) =~ s:single_dent 83 let ind = ind + shiftwidth() 84 endif 85 86 " The following should always be at the start of a line, no indenting 87 if getline(v:lnum) =~ s:no_indent 88 let ind = 0 89 endif 90 91 " Subtract a 'shiftwidth', if this isn't the first thing after the 'is' 92 " or first thing after the 'do' 93 if getline(v:lnum) =~ s:outdent && getline(v:lnum - 1) !~ s:single_dent 94 \ && getline(v:lnum - 1) !~ '^\s*do\>' 95 let ind = ind - shiftwidth() 96 endif 97 98 " Subtract a shiftwidth for end statements 99 if getline(v:lnum) =~ '^\s*end\>' 100 let ind = ind - shiftwidth() 101 endif 102 103 " set indent of zero end statements that are at an indent of 3, this should 104 " only ever be the class's end. 105 if getline(v:lnum) =~ '^\s*end\>' && ind == shiftwidth() 106 let ind = 0 107 endif 108 109 return ind 110endfunction 111 112let &cpo = s:keepcpo 113unlet s:keepcpo 114 115" vim:sw=2 116