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" Vim syntax file
" Language: SML
" Filenames: *.sml *.sig
" Maintainers: Markus Mottl <markus.mottl@gmail.com>
" Fabrizio Zeno Cornelli <zeno@filibusta.crema.unimi.it>
" URL: http://www.ocaml.info/vim/syntax/sml.vim
" Last Change: 2006 Oct 23 - Fixed character highlighting bug (MM)
" 2002 Jun 02 - Fixed small typo (MM)
" 2001 Nov 20 - Fixed small highlighting bug with modules (MM)
" quit when a syntax file was already loaded
if exists("b:current_syntax")
finish
endif
" SML is case sensitive.
syn case match
" lowercase identifier - the standard way to match
syn match smlLCIdentifier /\<\(\l\|_\)\(\w\|'\)*\>/
syn match smlKeyChar "|"
" Errors
syn match smlBraceErr "}"
syn match smlBrackErr "\]"
syn match smlParenErr ")"
syn match smlCommentErr "\*)"
syn match smlThenErr "\<then\>"
" Error-highlighting of "end" without synchronization:
" as keyword or as error (default)
if exists("sml_noend_error")
syn match smlKeyword "\<end\>"
else
syn match smlEndErr "\<end\>"
endif
" Some convenient clusters
syn cluster smlAllErrs contains=smlBraceErr,smlBrackErr,smlParenErr,smlCommentErr,smlEndErr,smlThenErr
syn cluster smlAENoParen contains=smlBraceErr,smlBrackErr,smlCommentErr,smlEndErr,smlThenErr
syn cluster smlContained contains=smlTodo,smlPreDef,smlModParam,smlModParam1,smlPreMPRestr,smlMPRestr,smlMPRestr1,smlMPRestr2,smlMPRestr3,smlModRHS,smlFuncWith,smlFuncStruct,smlModTypeRestr,smlModTRWith,smlWith,smlWithRest,smlModType,smlFullMod
" Enclosing delimiters
syn region smlEncl transparent matchgroup=smlKeyword start="(" matchgroup=smlKeyword end=")" contains=ALLBUT,@smlContained,smlParenErr
syn region smlEncl transparent matchgroup=smlKeyword start="{" matchgroup=smlKeyword end="}" contains=ALLBUT,@smlContained,smlBraceErr
syn region smlEncl transparent matchgroup=smlKeyword start="\[" matchgroup=smlKeyword end="\]" contains=ALLBUT,@smlContained,smlBrackErr
syn region smlEncl transparent matchgroup=smlKeyword start="#\[" matchgroup=smlKeyword end="\]" contains=ALLBUT,@smlContained,smlBrackErr
" Comments
syn region smlComment start="(\*" end="\*)" contains=smlComment,smlTodo
syn keyword smlTodo contained TODO FIXME XXX
" let
syn region smlEnd matchgroup=smlKeyword start="\<let\>" matchgroup=smlKeyword end="\<end\>" contains=ALLBUT,@smlContained,smlEndErr
" local
syn region smlEnd matchgroup=smlKeyword start="\<local\>" matchgroup=smlKeyword end="\<end\>" contains=ALLBUT,@smlContained,smlEndErr
" abstype
syn region smlNone matchgroup=smlKeyword start="\<abstype\>" matchgroup=smlKeyword end="\<end\>" contains=ALLBUT,@smlContained,smlEndErr
" begin
syn region smlEnd matchgroup=smlKeyword start="\<begin\>" matchgroup=smlKeyword end="\<end\>" contains=ALLBUT,@smlContained,smlEndErr
" if
syn region smlNone matchgroup=smlKeyword start="\<if\>" matchgroup=smlKeyword end="\<then\>" contains=ALLBUT,@smlContained,smlThenErr
"" Modules
" "struct"
syn region smlStruct matchgroup=smlModule start="\<struct\>" matchgroup=smlModule end="\<end\>" contains=ALLBUT,@smlContained,smlEndErr
" "sig"
syn region smlSig matchgroup=smlModule start="\<sig\>" matchgroup=smlModule end="\<end\>" contains=ALLBUT,@smlContained,smlEndErr,smlModule
syn region smlModSpec matchgroup=smlKeyword start="\<structure\>" matchgroup=smlModule end="\<\u\(\w\|'\)*\>" contained contains=@smlAllErrs,smlComment skipwhite skipempty nextgroup=smlModTRWith,smlMPRestr
" "open"
syn region smlNone matchgroup=smlKeyword start="\<open\>" matchgroup=smlModule end="\<\u\(\w\|'\)*\(\.\u\(\w\|'\)*\)*\>" contains=@smlAllErrs,smlComment
" "structure" - somewhat complicated stuff ;-)
syn region smlModule matchgroup=smlKeyword start="\<\(structure\|functor\)\>" matchgroup=smlModule end="\<\u\(\w\|'\)*\>" contains=@smlAllErrs,smlComment skipwhite skipempty nextgroup=smlPreDef
syn region smlPreDef start="."me=e-1 matchgroup=smlKeyword end="\l\|="me=e-1 contained contains=@smlAllErrs,smlComment,smlModParam,smlModTypeRestr,smlModTRWith nextgroup=smlModPreRHS
syn region smlModParam start="([^*]" end=")" contained contains=@smlAENoParen,smlModParam1
syn match smlModParam1 "\<\u\(\w\|'\)*\>" contained skipwhite skipempty nextgroup=smlPreMPRestr
syn region smlPreMPRestr start="."me=e-1 end=")"me=e-1 contained contains=@smlAllErrs,smlComment,smlMPRestr,smlModTypeRestr
syn region smlMPRestr start=":" end="."me=e-1 contained contains=@smlComment skipwhite skipempty nextgroup=smlMPRestr1,smlMPRestr2,smlMPRestr3
syn region smlMPRestr1 matchgroup=smlModule start="\ssig\s\=" matchgroup=smlModule end="\<end\>" contained contains=ALLBUT,@smlContained,smlEndErr,smlModule
syn region smlMPRestr2 start="\sfunctor\(\s\|(\)\="me=e-1 matchgroup=smlKeyword end="->" contained contains=@smlAllErrs,smlComment,smlModParam skipwhite skipempty nextgroup=smlFuncWith
syn match smlMPRestr3 "\w\(\w\|'\)*\(\.\w\(\w\|'\)*\)*" contained
syn match smlModPreRHS "=" contained skipwhite skipempty nextgroup=smlModParam,smlFullMod
syn region smlModRHS start="." end=".\w\|([^*]"me=e-2 contained contains=smlComment skipwhite skipempty nextgroup=smlModParam,smlFullMod
syn match smlFullMod "\<\u\(\w\|'\)*\(\.\u\(\w\|'\)*\)*" contained skipwhite skipempty nextgroup=smlFuncWith
syn region smlFuncWith start="([^*]"me=e-1 end=")" contained contains=smlComment,smlWith,smlFuncStruct
syn region smlFuncStruct matchgroup=smlModule start="[^a-zA-Z]struct\>"hs=s+1 matchgroup=smlModule end="\<end\>" contains=ALLBUT,@smlContained,smlEndErr
syn match smlModTypeRestr "\<\w\(\w\|'\)*\(\.\w\(\w\|'\)*\)*\>" contained
syn region smlModTRWith start=":\s*("hs=s+1 end=")" contained contains=@smlAENoParen,smlWith
syn match smlWith "\<\(\u\(\w\|'\)*\.\)*\w\(\w\|'\)*\>" contained skipwhite skipempty nextgroup=smlWithRest
syn region smlWithRest start="[^)]" end=")"me=e-1 contained contains=ALLBUT,@smlContained
" "signature"
syn region smlKeyword start="\<signature\>" matchgroup=smlModule end="\<\w\(\w\|'\)*\>" contains=smlComment skipwhite skipempty nextgroup=smlMTDef
syn match smlMTDef "=\s*\w\(\w\|'\)*\>"hs=s+1,me=s
syn keyword smlKeyword and andalso case
syn keyword smlKeyword datatype else eqtype
syn keyword smlKeyword exception fn fun handle
syn keyword smlKeyword in infix infixl infixr
syn keyword smlKeyword match nonfix of orelse
syn keyword smlKeyword raise handle type
syn keyword smlKeyword val where while with withtype
syn keyword smlType bool char exn int list option
syn keyword smlType real string unit
syn keyword smlOperator div mod not or quot rem
syn keyword smlBoolean true false
syn match smlConstructor "(\s*)"
syn match smlConstructor "\[\s*\]"
syn match smlConstructor "#\[\s*\]"
syn match smlConstructor "\u\(\w\|'\)*\>"
" Module prefix
syn match smlModPath "\u\(\w\|'\)*\."he=e-1
syn match smlCharacter +#"\\""\|#"."\|#"\\\d\d\d"+
syn match smlCharErr +#"\\\d\d"\|#"\\\d"+
syn region smlString start=+"+ skip=+\\\\\|\\"+ end=+"+
syn match smlFunDef "=>"
syn match smlRefAssign ":="
syn match smlTopStop ";;"
syn match smlOperator "\^"
syn match smlOperator "::"
syn match smlAnyVar "\<_\>"
syn match smlKeyChar "!"
syn match smlKeyChar ";"
syn match smlKeyChar "\*"
syn match smlKeyChar "="
syn match smlNumber "\<-\=\d\+\>"
syn match smlNumber "\<-\=0[x|X]\x\+\>"
syn match smlReal "\<-\=\d\+\.\d*\([eE][-+]\=\d\+\)\=[fl]\=\>"
" Synchronization
syn sync minlines=20
syn sync maxlines=500
syn sync match smlEndSync grouphere smlEnd "\<begin\>"
syn sync match smlEndSync groupthere smlEnd "\<end\>"
syn sync match smlStructSync grouphere smlStruct "\<struct\>"
syn sync match smlStructSync groupthere smlStruct "\<end\>"
syn sync match smlSigSync grouphere smlSig "\<sig\>"
syn sync match smlSigSync groupthere smlSig "\<end\>"
" Define the default highlighting.
" Only when an item doesn't have highlighting yet
hi def link smlBraceErr Error
hi def link smlBrackErr Error
hi def link smlParenErr Error
hi def link smlCommentErr Error
hi def link smlEndErr Error
hi def link smlThenErr Error
hi def link smlCharErr Error
hi def link smlComment Comment
hi def link smlModPath Include
hi def link smlModule Include
hi def link smlModParam1 Include
hi def link smlModType Include
hi def link smlMPRestr3 Include
hi def link smlFullMod Include
hi def link smlModTypeRestr Include
hi def link smlWith Include
hi def link smlMTDef Include
hi def link smlConstructor Constant
hi def link smlModPreRHS Keyword
hi def link smlMPRestr2 Keyword
hi def link smlKeyword Keyword
hi def link smlFunDef Keyword
hi def link smlRefAssign Keyword
hi def link smlKeyChar Keyword
hi def link smlAnyVar Keyword
hi def link smlTopStop Keyword
hi def link smlOperator Keyword
hi def link smlBoolean Boolean
hi def link smlCharacter Character
hi def link smlNumber Number
hi def link smlReal Float
hi def link smlString String
hi def link smlType Type
hi def link smlTodo Todo
hi def link smlEncl Keyword
let b:current_syntax = "sml"
" vim: ts=8