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-rw-r--r--runtime/indent/eiffel.vim106
1 files changed, 106 insertions, 0 deletions
diff --git a/runtime/indent/eiffel.vim b/runtime/indent/eiffel.vim
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+" Vim indent file
+" Language: Eiffel
+" Maintainer: David Clarke <gadicath@dishevelled.net>
+" $Date$
+" $Revision$
+" URL: http://gadicath.webhop.net/other/eiffel.vim
+
+" 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
+setlocal sw=3
+setlocal tw=78
+
+" Define some stuff
+" keywords grouped by indenting
+let s:trust_user_indent = '\(+\)\(\s*\(--\).*\)\=$'
+let s:relative_indent = '^\s*\(deferred\|class\|feature\|creation\|inherit\|loop\|from\|until\|if\|else\|elseif\|ensure\|require\|check\|do\|local\|invariant\|variant\|rename\|redefine\|do\|export\)\>'
+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
+
+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 + &sw
+ 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 = &sw
+ endif
+
+ " Indent to double indent
+ if getline(v:lnum) =~ s:inheritance_dent
+ let ind = 2 * &sw
+ endif
+
+ " Indent line after the first line of the function definition
+ if getline(lnum) =~ s:single_dent
+ let ind = ind + &sw
+ 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 - &sw
+ endif
+
+ " Subtract a shiftwidth for end statements
+ if getline(v:lnum) =~ '^\s*end\>'
+ let ind = ind - &sw
+ 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 == 3
+ let ind = 0
+ endif
+
+ return ind
+endfunction
+
+" vim:sw=2