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Diffstat (limited to 'runtime/indent/eiffel.vim')
-rw-r--r-- | runtime/indent/eiffel.vim | 115 |
1 files changed, 115 insertions, 0 deletions
diff --git a/runtime/indent/eiffel.vim b/runtime/indent/eiffel.vim new file mode 100644 index 0000000..d7667a8 --- /dev/null +++ b/runtime/indent/eiffel.vim @@ -0,0 +1,115 @@ +" Vim indent file +" Language: Eiffel +" Maintainer: Jocelyn Fiat <jfiat@eiffel.com> +" Previous-Maintainer: David Clarke <gadicath@dishevelled.net> +" Contributions from: Takuya Fujiwara +" Contributions from: Thilo Six +" $Date: 2017/03/08 06:00:00 $ +" $Revision: 1.4 $ +" URL: https://github.com/eiffelhub/vim-eiffel + +" Only load this indent file when no other was loaded. +if exists("b:did_indent") + finish +endif +let b:did_indent = 1 + +setlocal indentexpr=GetEiffelIndent() +setlocal nolisp +setlocal nosmartindent +setlocal nocindent +setlocal autoindent +setlocal comments=:-- +setlocal indentkeys+==end,=else,=ensure,=require,=check,=loop,=until +setlocal indentkeys+==creation,=feature,=inherit,=class,=is,=redefine,=rename,=variant +setlocal indentkeys+==invariant,=do,=local,=export + +let b:undo_indent = "setl smartindent< indentkeys< indentexpr< autoindent< comments< " + +" Define some stuff +" keywords grouped by indenting +let s:trust_user_indent = '\(+\)\(\s*\(--\).*\)\=$' +let s:relative_indent = '^\s*\(deferred\|class\|feature\|creation\|inherit\|loop\|from\|across\|until\|if\|else\|elseif\|ensure\|require\|check\|do\|local\|invariant\|variant\|rename\|redefine\|do\|export\)\>' +let s:outdent = '^\s*\(else\|invariant\|variant\|do\|require\|until\|loop\|local\)\>' +let s:no_indent = '^\s*\(class\|feature\|creation\|inherit\)\>' +let s:single_dent = '^[^-]\+[[:alnum:]]\+ is\(\s*\(--\).*\)\=$' +let s:inheritance_dent = '\s*\(redefine\|rename\|export\)\>' + + +" Only define the function once. +if exists("*GetEiffelIndent") + finish +endif + +let s:keepcpo= &cpo +set cpo&vim + +function GetEiffelIndent() + + " Eiffel Class indenting + " + " Find a non-blank line above the current line. + let lnum = prevnonblank(v:lnum - 1) + + " At the start of the file use zero indent. + if lnum == 0 + return 0 + endif + + " trust the user's indenting + if getline(lnum) =~ s:trust_user_indent + return -1 + endif + + " Add a 'shiftwidth' after lines that start with an indent word + let ind = indent(lnum) + if getline(lnum) =~ s:relative_indent + let ind = ind + shiftwidth() + endif + + " Indent to single indent + if getline(v:lnum) =~ s:single_dent && getline(v:lnum) !~ s:relative_indent + \ && getline(v:lnum) !~ '\s*\<\(and\|or\|implies\)\>' + let ind = shiftwidth() + endif + + " Indent to double indent + if getline(v:lnum) =~ s:inheritance_dent + let ind = 2 * shiftwidth() + endif + + " Indent line after the first line of the function definition + if getline(lnum) =~ s:single_dent + let ind = ind + shiftwidth() + endif + + " The following should always be at the start of a line, no indenting + if getline(v:lnum) =~ s:no_indent + let ind = 0 + endif + + " Subtract a 'shiftwidth', if this isn't the first thing after the 'is' + " or first thing after the 'do' + if getline(v:lnum) =~ s:outdent && getline(v:lnum - 1) !~ s:single_dent + \ && getline(v:lnum - 1) !~ '^\s*do\>' + let ind = ind - shiftwidth() + endif + + " Subtract a shiftwidth for end statements + if getline(v:lnum) =~ '^\s*end\>' + let ind = ind - shiftwidth() + endif + + " set indent of zero end statements that are at an indent of 3, this should + " only ever be the class's end. + if getline(v:lnum) =~ '^\s*end\>' && ind == shiftwidth() + let ind = 0 + endif + + return ind +endfunction + +let &cpo = s:keepcpo +unlet s:keepcpo + +" vim:sw=2 |