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" Vim syntax file
" Language: Ruby
" Maintainer: Doug Kearns <djkea2 at gus.gscit.monash.edu.au>
" Info: $Id$
" URL: http://vim-ruby.sourceforge.net
" Anon CVS: See above site
" Licence: GPL (http://www.gnu.org)
" Disclaimer:
" This program is distributed in the hope that it will be useful,
" but WITHOUT ANY WARRANTY; without even the implied warranty of
" MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
" GNU General Public License for more details.
" ----------------------------------------------------------------------------
"
" Previous Maintainer: Mirko Nasato
" Thanks to perl.vim authors, and to Reimer Behrends. :-) (MN)
" ----------------------------------------------------------------------------
" For version 5.x: Clear all syntax items
" For version 6.x: Quit when a syntax file was already loaded
if version < 600
syntax clear
elseif exists("b:current_syntax")
finish
endif
if has("folding") && exists("ruby_fold")
setlocal foldmethod=syntax
endif
if exists("ruby_space_errors")
if !exists("ruby_no_trail_space_error")
syn match rubySpaceError display excludenl "\s\+$"
endif
if !exists("ruby_no_tab_space_error")
syn match rubySpaceError display " \+\t"me=e-1
endif
endif
" Expression Substitution and Backslash Notation
syn match rubyEscape "\\\\\|\\[abefnrstv]\|\\\o\{1,3}\|\\x\x\{1,2}" contained display
syn match rubyEscape "\%(\\M-\\C-\|\\C-\\M-\|\\M-\\c\|\\c\\M-\|\\c\|\\C-\|\\M-\)\%(\\\o\{1,3}\|\\x\x\{1,2}\|\\\=\S\)" contained display
syn match rubyInterpolation "#{[^}]*}" contained
syn match rubyInterpolation "#\%(\$\|@@\=\)\w\+" contained display
syn match rubyNoInterpolation "\\#{[^}]*}" contained
syn match rubyNoInterpolation "\\#\%(\$\|@@\=\)\w\+" contained display
syn match rubyDelimEscape "\\[(<{\[)>}\]]" transparent display contained contains=NONE
syn region rubyNestedParentheses start="(" end=")" skip="\\\\\|\\)" transparent contained contains=@rubyStringSpecial,rubyNestedParentheses,rubyDelimEscape
syn region rubyNestedCurlyBraces start="{" end="}" skip="\\\\\|\\}" transparent contained contains=@rubyStringSpecial,rubyNestedCurlyBraces,rubyDelimEscape
syn region rubyNestedAngleBrackets start="<" end=">" skip="\\\\\|\\>" transparent contained contains=@rubyStringSpecial,rubyNestedAngleBrackets,rubyDelimEscape
syn region rubyNestedSquareBrackets start="\[" end="\]" skip="\\\\\|\\\]" transparent contained contains=@rubyStringSpecial,rubyNestedSquareBrackets,rubyDelimEscape
syn cluster rubyStringSpecial contains=rubyInterpolation,rubyNoInterpolation,rubyEscape
syn cluster rubyExtendedStringSpecial contains=@rubyStringSpecial,rubyNestedParentheses,rubyNestedCurlyBraces,rubyNestedAngleBrackets,rubyNestedSquareBrackets
" Numbers and ASCII Codes
syn match rubyASCIICode "\w\@<!\%(?\%(\\M-\\C-\|\\C-\\M-\|\\M-\\c\|\\c\\M-\|\\c\|\\C-\|\\M-\)\=\%(\\\o\{1,3}\|\\x\x\{1,2}\|\\\=\S\)\)"
syn match rubyInteger "\<0[xX]\x\+\%(_\x\+\)*\>" display
syn match rubyInteger "\<\%(0[dD]\)\=\%(0\|[1-9]\d*\%(_\d\+\)*\)\>" display
syn match rubyInteger "\<0[oO]\=\o\+\%(_\o\+\)*\>" display
syn match rubyInteger "\<0[bB][01]\+\%(_[01]\+\)*\>" display
syn match rubyFloat "\<\%(0\|[1-9]\d*\%(_\d\+\)*\)\.\d\+\%(_\d\+\)*\>" display
syn match rubyFloat "\<\%(0\|[1-9]\d*\%(_\d\+\)*\)\%(\.\d\+\%(_\d\+\)*\)\=\%([eE][-+]\=\d\+\%(_\d\+\)*\)\>" display
" Identifiers
syn match rubyLocalVariableOrMethod "\<[_[:lower:]][_[:alnum:]]*[?!=]\=" contains=NONE display transparent
syn match rubyBlockArgument "&[_[:lower:]][_[:alnum:]]" contains=NONE display transparent
syn match rubyConstant "\%(\%(\.\@<!\.\)\@<!\<\|::\)\_s*\zs\u\w*\>\%(\s*(\)\@!"
syn match rubyClassVariable "@@\h\w*" display
syn match rubyInstanceVariable "@\h\w*" display
syn match rubyGlobalVariable "$\%(\h\w*\|-.\)"
syn match rubySymbol ":\@<!:\%(\^\|\~\|<<\|<=>\|<=\|<\|===\|==\|=\~\|>>\|>=\|>\||\|-@\|-\|/\|\[]=\|\[]\|\*\*\|\*\|&\|%\|+@\|+\|`\)"
syn match rubySymbol ":\@<!:\$\%(-.\|[`~<=>_,;:!?/.'"@$*\&+0]\)"
syn match rubySymbol ":\@<!:\%(\$\|@@\=\)\=\h\w*[?!=]\="
syn region rubySymbol start=":\@<!:\"" end="\"" skip="\\\\\|\\\""
syn match rubyBlockParameter "\%(\%(\<do\>\|{\)\s*\)\@<=|\s*\zs[( ,a-zA-Z0-9_*)]\+\ze\s*|" display
syn match rubyPredefinedVariable #$[!$&"'*+,./0:;<=>?@\`~1-9]#
syn match rubyPredefinedVariable "$_\>" display
syn match rubyPredefinedVariable "$-[0FIKadilpvw]\>" display
syn match rubyPredefinedVariable "$\%(deferr\|defout\|stderr\|stdin\|stdout\)\>" display
syn match rubyPredefinedVariable "$\%(DEBUG\|FILENAME\|KCODE\|LOAD_PATH\|SAFE\|VERBOSE\)\>" display
syn match rubyPredefinedConstant "\%(\%(\.\@<!\.\)\@<!\|::\)\_s*\zs\%(MatchingData\|ARGF\|ARGV\|ENV\)\>\%(\s*(\)\@!"
syn match rubyPredefinedConstant "\%(\%(\.\@<!\.\)\@<!\|::\)\_s*\zs\%(DATA\|FALSE\|NIL\|RUBY_PLATFORM\|RUBY_RELEASE_DATE\)\>\%(\s*(\)\@!"
syn match rubyPredefinedConstant "\%(\%(\.\@<!\.\)\@<!\|::\)\_s*\zs\%(RUBY_VERSION\|STDERR\|STDIN\|STDOUT\|TOPLEVEL_BINDING\|TRUE\)\>\%(\s*(\)\@!"
"Obsolete Global Constants
"syn match rubyPredefinedConstant "\%(::\)\=\zs\%(PLATFORM\|RELEASE_DATE\|VERSION\)\>"
"syn match rubyPredefinedConstant "\%(::\)\=\zs\%(NotImplementError\)\>"
" Normal Regular Expression
syn region rubyString matchgroup=rubyStringDelimiter start="\%(\%(^\|\<\%(and\|or\|while\|until\|unless\|if\|elsif\|when\|not\|then\)\|[\~=!|&(,[]\)\s*\)\@<=/" end="/[iomx]*" skip="\\\\\|\\/" contains=@rubyStringSpecial
syn region rubyString matchgroup=rubyStringDelimiter start="\%(\<\%(split\|scan\|gsub\|sub\)\s*\)\@<=/" end="/[iomx]*" skip="\\\\\|\\/" contains=@rubyStringSpecial
" Normal String and Shell Command Output
syn region rubyString matchgroup=rubyStringDelimiter start="\"" end="\"" skip="\\\\\|\\\"" contains=@rubyStringSpecial
syn region rubyString matchgroup=rubyStringDelimiter start="'" end="'" skip="\\\\\|\\'"
syn region rubyString matchgroup=rubyStringDelimiter start="`" end="`" skip="\\\\\|\\`" contains=@rubyStringSpecial
" Generalized Regular Expression
syn region rubyString matchgroup=rubyStringDelimiter start="%r\z([~`!@#$%^&*_\-+=|\:;"',.?/]\)" end="\z1[iomx]*" skip="\\\\\|\\\z1" contains=@rubyStringSpecial fold
syn region rubyString matchgroup=rubyStringDelimiter start="%r{" end="}[iomx]*" skip="\\\\\|\\}" contains=@rubyStringSpecial,rubyNestedCurlyBraces,rubyDelimEscape fold
syn region rubyString matchgroup=rubyStringDelimiter start="%r<" end=">[iomx]*" skip="\\\\\|\\>" contains=@rubyStringSpecial,rubyNestedAngleBrackets,rubyDelimEscape fold
syn region rubyString matchgroup=rubyStringDelimiter start="%r\[" end="\][iomx]*" skip="\\\\\|\\\]" contains=@rubyStringSpecial,rubyNestedSquareBrackets,rubyDelimEscape fold
syn region rubyString matchgroup=rubyStringDelimiter start="%r(" end=")[iomx]*" skip="\\\\\|\\)" contains=@rubyStringSpecial,rubyNestedParentheses,rubyDelimEscape fold
" Generalized Single Quoted String, Symbol and Array of Strings
syn region rubyString matchgroup=rubyStringDelimiter start="%[qsw]\z([~`!@#$%^&*_\-+=|\:;"',.?/]\)" end="\z1" skip="\\\\\|\\\z1" fold
syn region rubyString matchgroup=rubyStringDelimiter start="%[qsw]{" end="}" skip="\\\\\|\\}" fold contains=rubyNestedCurlyBraces,rubyDelimEscape
syn region rubyString matchgroup=rubyStringDelimiter start="%[qsw]<" end=">" skip="\\\\\|\\>" fold contains=rubyNestedAngleBrackets,rubyDelimEscape
syn region rubyString matchgroup=rubyStringDelimiter start="%[qsw]\[" end="\]" skip="\\\\\|\\\]" fold contains=rubyNestedSquareBrackets,rubyDelimEscape
syn region rubyString matchgroup=rubyStringDelimiter start="%[qsw](" end=")" skip="\\\\\|\\)" fold contains=rubyNestedParentheses,rubyDelimEscape
" Generalized Double Quoted String and Array of Strings and Shell Command Output
" Note: %= is not matched here as the beginning of a double quoted string
syn region rubyString matchgroup=rubyStringDelimiter start="%\z([~`!@#$%^&*_\-+|\:;"',.?/]\)" end="\z1" skip="\\\\\|\\\z1" contains=@rubyStringSpecial fold
syn region rubyString matchgroup=rubyStringDelimiter start="%[QWx]\z([~`!@#$%^&*_\-+=|\:;"',.?/]\)" end="\z1" skip="\\\\\|\\\z1" contains=@rubyStringSpecial fold
syn region rubyString matchgroup=rubyStringDelimiter start="%[QWx]\={" end="}" skip="\\\\\|\\}" contains=@rubyStringSpecial,rubyNestedCurlyBraces,rubyDelimEscape fold
syn region rubyString matchgroup=rubyStringDelimiter start="%[QWx]\=<" end=">" skip="\\\\\|\\>" contains=@rubyStringSpecial,rubyNestedAngleBrackets,rubyDelimEscape fold
syn region rubyString matchgroup=rubyStringDelimiter start="%[QWx]\=\[" end="\]" skip="\\\\\|\\\]" contains=@rubyStringSpecial,rubyNestedSquareBrackets,rubyDelimEscape fold
syn region rubyString matchgroup=rubyStringDelimiter start="%[QWx]\=(" end=")" skip="\\\\\|\\)" contains=@rubyStringSpecial,rubyNestedParentheses,rubyDelimEscape fold
" Here Document
syn region rubyHeredocStart matchgroup=rubyStringDelimiter start=+\%(\%(class\s*\|\%(\.\|::\)\)\_s*\)\@<!<<-\=\zs\%(\h\w*\)+ end=+$+ oneline contains=TOP
syn region rubyHeredocStart matchgroup=rubyStringDelimiter start=+\%(\%(class\s*\|\%(\.\|::\)\)\_s*\)\@<!<<-\=\zs"\%([^"]*\)"+ end=+$+ oneline contains=TOP
syn region rubyHeredocStart matchgroup=rubyStringDelimiter start=+\%(\%(class\s*\|\%(\.\|::\)\)\_s*\)\@<!<<-\=\zs'\%([^']*\)'+ end=+$+ oneline contains=TOP
syn region rubyHeredocStart matchgroup=rubyStringDelimiter start=+\%(\%(class\s*\|\%(\.\|::\)\)\_s*\)\@<!<<-\=\zs`\%([^`]*\)`+ end=+$+ oneline contains=TOP
syn region rubyString start=+\%(\%(class\s*\|\%(\.\|::\)\)\_s*\)\@<!<<\z(\h\w*\)\ze+hs=s+2 matchgroup=rubyStringDelimiter end=+^\z1$+ contains=rubyHeredocStart,@rubyStringSpecial nextgroup=rubyFunction fold keepend
syn region rubyString start=+\%(\%(class\s*\|\%(\.\|::\)\)\_s*\)\@<!<<"\z([^"]*\)"\ze+hs=s+2 matchgroup=rubyStringDelimiter end=+^\z1$+ contains=rubyHeredocStart,@rubyStringSpecial nextgroup=rubyFunction fold keepend
syn region rubyString start=+\%(\%(class\s*\|\%(\.\|::\)\)\_s*\)\@<!<<'\z([^']*\)'\ze+hs=s+2 matchgroup=rubyStringDelimiter end=+^\z1$+ contains=rubyHeredocStart nextgroup=rubyFunction fold keepend
syn region rubyString start=+\%(\%(class\s*\|\%(\.\|::\)\)\_s*\)\@<!<<`\z([^`]*\)`\ze+hs=s+2 matchgroup=rubyStringDelimiter end=+^\z1$+ contains=rubyHeredocStart,@rubyStringSpecial nextgroup=rubyFunction fold keepend
syn region rubyString start=+\%(\%(class\s*\|\%(\.\|::\)\)\_s*\)\@<!<<-\z(\h\w*\)\ze+hs=s+3 matchgroup=rubyStringDelimiter end=+^\s*\zs\z1$+ contains=rubyHeredocStart,@rubyStringSpecial nextgroup=rubyFunction fold keepend
syn region rubyString start=+\%(\%(class\s*\|\%(\.\|::\)\)\_s*\)\@<!<<-"\z([^"]*\)"\ze+hs=s+3 matchgroup=rubyStringDelimiter end=+^\s*\zs\z1$+ contains=rubyHeredocStart,@rubyStringSpecial nextgroup=rubyFunction fold keepend
syn region rubyString start=+\%(\%(class\s*\|\%(\.\|::\)\)\_s*\)\@<!<<-'\z([^']*\)'\ze+hs=s+3 matchgroup=rubyStringDelimiter end=+^\s*\zs\z1$+ contains=rubyHeredocStart nextgroup=rubyFunction fold keepend
syn region rubyString start=+\%(\%(class\s*\|\%(\.\|::\)\)\_s*\)\@<!<<-`\z([^`]*\)`\ze+hs=s+3 matchgroup=rubyStringDelimiter end=+^\s*\zs\z1$+ contains=rubyHeredocStart,@rubyStringSpecial nextgroup=rubyFunction fold keepend
if exists('main_syntax') && main_syntax == 'eruby'
let ruby_no_expensive = 1
end
" Expensive Mode - colorize *end* according to opening statement
if !exists("ruby_no_expensive")
syn region rubyFunction matchgroup=rubyDefine start="\<def\s\+" end="\ze\%(\s\|(\|;\|$\)" oneline
syn region rubyClass matchgroup=rubyDefine start="\<class\s\+" end="\ze\%(\s\|<\|;\|$\)" oneline
syn match rubyDefine "\<class\ze<<"
syn region rubyModule matchgroup=rubyDefine start="\<module\s\+" end="\ze\%(\s\|;\|$\)" oneline
syn region rubyBlock start="\<def\>" matchgroup=rubyDefine end="\<end\>" contains=ALLBUT,@rubyExtendedStringSpecial,rubyTodo nextgroup=rubyFunction fold
syn region rubyBlock start="\<class\>" matchgroup=rubyDefine end="\<end\>" contains=ALLBUT,@rubyExtendedStringSpecial,rubyTodo nextgroup=rubyClass fold
syn region rubyBlock start="\<module\>" matchgroup=rubyDefine end="\<end\>" contains=ALLBUT,@rubyExtendedStringSpecial,rubyTodo nextgroup=rubyModule fold
" modifiers
syn match rubyControl "\<\%(if\|unless\|while\|until\)\>" display
" *do* requiring *end*
syn region rubyDoBlock matchgroup=rubyControl start="\<do\>" end="\<end\>" contains=ALLBUT,@rubyExtendedStringSpecial,rubyTodo fold
" *{* requiring *}*
syn region rubyCurlyBlock start="{" end="}" contains=ALLBUT,@rubyExtendedStringSpecial,rubyTodo fold
" statements without *do*
syn region rubyNoDoBlock matchgroup=rubyControl start="\<\%(case\|begin\)\>" start="\%(^\|\.\.\.\=\|[,;=([<>~\*/%!&^|+-]\)\s*\zs\%(if\|unless\)\>" end="\<end\>" contains=ALLBUT,@rubyExtendedStringSpecial,rubyTodo fold
" statement with optional *do*
syn region rubyOptDoLine matchgroup=rubyControl start="\<for\>" start="\%(\%(^\|\.\.\.\=\|[,;=([<>~\*/%!&^|+-]\)\s*\)\@<=\<\%(until\|while\)\>" end="\%(\<do\>\|:\)" end="\ze\%(;\|$\)" oneline contains=ALLBUT,@rubyExtendedStringSpecial,rubyTodo
syn region rubyOptDoBlock start="\<for\>" start="\%(\%(^\|\.\.\.\=\|[,;=([<>~\*/%!&^|+-]\)\s*\)\@<=\<\%(until\|while\)\>" matchgroup=rubyControl end="\<end\>" contains=ALLBUT,@rubyExtendedStringSpecial,rubyTodo nextgroup=rubyOptDoLine fold
if !exists("ruby_minlines")
let ruby_minlines = 50
endif
exec "syn sync minlines=" . ruby_minlines
else
syn region rubyFunction matchgroup=rubyControl start="\<def\s\+" end="\ze\%(\s\|(\|;\|$\)" oneline
syn region rubyClass matchgroup=rubyControl start="\<class\s\+" end="\ze\%(\s\|<\|;\|$\)" oneline
syn match rubyControl "\<class\ze<<"
syn region rubyModule matchgroup=rubyControl start="\<module\s\+" end="\ze\%(\s\|;\|$\)" oneline
syn keyword rubyControl case begin do for if unless while until end
endif
" Keywords
" Note: the following keywords have already been defined:
" begin case class def do end for if module unless until while
syn keyword rubyControl and break else elsif ensure in next not or redo rescue retry return then when
syn match rubyOperator "\<defined?" display
syn keyword rubyKeyword alias super undef yield
syn keyword rubyBoolean true false
syn keyword rubyPseudoVariable nil self __FILE__ __LINE__
syn keyword rubyBeginEnd BEGIN END
" Special Methods
if !exists("ruby_no_special_methods")
syn keyword rubyAccess public protected private
syn keyword rubyAttribute attr attr_accessor attr_reader attr_writer
syn keyword rubyControl abort at_exit exit fork loop trap
syn keyword rubyEval eval class_eval instance_eval module_eval
syn keyword rubyException raise fail catch throw
syn keyword rubyInclude autoload extend include load require
syn keyword rubyKeyword callcc caller lambda proc
endif
" Comments and Documentation
syn match rubySharpBang "\%^#!.*" display
syn keyword rubyTodo FIXME NOTE TODO XXX contained
syn match rubyComment "#.*" contains=rubySharpBang,rubySpaceError,rubyTodo,@Spell
syn region rubyDocumentation start="^=begin" end="^=end.*$" contains=rubySpaceError,rubyTodo,@Spell fold
" Note: this is a hack to prevent 'keywords' being highlighted as such when called as methods with an explicit receiver
syn match rubyKeywordAsMethod "\%(\%(\.\@<!\.\)\|::\)\_s*\%(alias\|and\|begin\|break\|case\|class\|def\|defined\|do\|else\)\>" transparent contains=NONE
syn match rubyKeywordAsMethod "\%(\%(\.\@<!\.\)\|::\)\_s*\%(elsif\|end\|ensure\|false\|for\|if\|in\|module\|next\|nil\)\>" transparent contains=NONE
syn match rubyKeywordAsMethod "\%(\%(\.\@<!\.\)\|::\)\_s*\%(not\|or\|redo\|rescue\|retry\|return\|self\|super\|then\|true\)\>" transparent contains=NONE
syn match rubyKeywordAsMethod "\%(\%(\.\@<!\.\)\|::\)\_s*\%(undef\|unless\|until\|when\|while\|yield\|BEGIN\|END\|__FILE__\|__LINE__\)\>" transparent contains=NONE
syn match rubyKeywordAsMethod "\%(\%(\.\@<!\.\)\|::\)\_s*\%(abort\|at_exit\|attr\|attr_accessor\|attr_reader\)\>" transparent contains=NONE
syn match rubyKeywordAsMethod "\%(\%(\.\@<!\.\)\|::\)\_s*\%(attr_writer\|autoload\|callcc\|catch\|caller\)\>" transparent contains=NONE
syn match rubyKeywordAsMethod "\%(\%(\.\@<!\.\)\|::\)\_s*\%(eval\|class_eval\|instance_eval\|module_eval\|exit\)\>" transparent contains=NONE
syn match rubyKeywordAsMethod "\%(\%(\.\@<!\.\)\|::\)\_s*\%(extend\|fail\|fork\|include\|lambda\)\>" transparent contains=NONE
syn match rubyKeywordAsMethod "\%(\%(\.\@<!\.\)\|::\)\_s*\%(load\|loop\|private\|proc\|protected\)\>" transparent contains=NONE
syn match rubyKeywordAsMethod "\%(\%(\.\@<!\.\)\|::\)\_s*\%(public\|require\|raise\|throw\|trap\)\>" transparent contains=NONE
" __END__ Directive
syn region rubyData matchgroup=rubyDataDirective start="^__END__$" end="\%$" fold
" Define the default highlighting.
" For version 5.7 and earlier: only when not done already
" For
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