" Vim syntax file
" Language:	Rebol
" Maintainer:	Mike Williams <mrw@netcomuk.co.uk>
" Filenames:	*.r
" Last Change:	2001 May 09
" URL:		N/A
"
" Change history

" 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

" Rebol is case insensitive
syn case ignore

" As per current users documentation
if version < 600
  set isk=@,48-57,?,!,.,',+,-,*,&,\|,=,_,~
else
  setlocal isk=@,48-57,?,!,.,',+,-,*,&,\|,=,_,~
endif

" Yer TODO highlighter
syn keyword	rebolTodo	contained TODO

" Comments
syn match       rebolComment    ";.*$" contains=rebolTodo

" Words
syn match       rebolWord       "\a\k*"
syn match       rebolWordPath   "[^[:space:]]/[^[:space]]"ms=s+1,me=e-1

" Booleans
syn keyword     rebolBoolean    true false on off yes no

" Values
" Integers
syn match       rebolInteger    "\<[+-]\=\d\+\('\d*\)*\>"
" Decimals
syn match       rebolDecimal    "[+-]\=\(\d\+\('\d*\)*\)\=[,.]\d*\(e[+-]\=\d\+\)\="
syn match       rebolDecimal    "[+-]\=\d\+\('\d*\)*\(e[+-]\=\d\+\)\="
" Time
syn match       rebolTime       "[+-]\=\(\d\+\('\d*\)*\:\)\{1,2}\d\+\('\d*\)*\([.,]\d\+\)\=\([AP]M\)\=\>"
syn match       rebolTime       "[+-]\=:\d\+\([.,]\d*\)\=\([AP]M\)\=\>"
" Dates
" DD-MMM-YY & YYYY format
syn match       rebolDate       "\d\{1,2}\([/-]\)\(Jan\|Feb\|Mar\|Apr\|May\|Jun\|Jul\|Aug\|Sep\|Oct\|Nov\|Dec\)\1\(\d\{2}\)\{1,2}\>"
" DD-month-YY & YYYY format
syn match       rebolDate       "\d\{1,2}\([/-]\)\(January\|February\|March\|April\|May\|June\|July\|August\|September\|October\|November\|December\)\1\(\d\{2}\)\{1,2}\>"
" DD-MM-YY & YY format
syn match       rebolDate       "\d\{1,2}\([/-]\)\d\{1,2}\1\(\d\{2}\)\{1,2}\>"
" YYYY-MM-YY format
syn match       rebolDate       "\d\{4}-\d\{1,2}-\d\{1,2}\>"
" DD.MM.YYYY format
syn match       rebolDate       "\d\{1,2}\.\d\{1,2}\.\d\{4}\>"
" Money
syn match       rebolMoney      "\a*\$\d\+\('\d*\)*\([,.]\d\+\)\="
" Strings
syn region      rebolString     oneline start=+"+ skip=+^"+ end=+"+ contains=rebolSpecialCharacter
syn region      rebolString     start=+[^#]{+ end=+}+ skip=+{[^}]*}+ contains=rebolSpecialCharacter
" Binary
syn region      rebolBinary     start=+\d*#{+ end=+}+ contains=rebolComment
" Email
syn match       rebolEmail      "\<\k\+@\(\k\+\.\)*\k\+\>"
" File
syn match       rebolFile       "%\(\k\+/\)*\k\+[/]\=" contains=rebolSpecialCharacter
syn region      rebolFile       oneline start=+%"+ end=+"+ contains=rebolSpecialCharacter
" URLs
syn match       rebolURL        "http://\k\+\(\.\k\+\)*\(:\d\+\)\=\(/\(\k\+/\)*\(\k\+\)\=\)*"
syn match       rebolURL        "file://\k\+\(\.\k\+\)*/\(\k\+/\)*\k\+"
syn match       rebolURL        "ftp://\(\k\+:\k\+@\)\=\k\+\(\.\k\+\)*\(:\d\+\)\=/\(\k\+/\)*\k\+"
syn match       rebolURL        "mailto:\k\+\(\.\k\+\)*@\k\+\(\.\k\+\)*"
" Issues
syn match       rebolIssue      "#\(\d\+-\)*\d\+"
" Tuples
syn match       rebolTuple      "\(\d\+\.\)\{2,}"

" Characters
syn match       rebolSpecialCharacter contained "\^[^[:space:][]"
syn match       rebolSpecialCharacter contained "%\d\+"


" Operators
" Math operators
syn match       rebolMathOperator  "\(\*\{1,2}\|+\|-\|/\{1,2}\)"
syn keyword     rebolMathFunction  abs absolute add arccosine arcsine arctangent cosine
syn keyword     rebolMathFunction  divide exp log-10 log-2 log-e max maximum min
syn keyword     rebolMathFunction  minimum multiply negate power random remainder sine
syn keyword     rebolMathFunction  square-root subtract tangent
" Binary operators
syn keyword     rebolBinaryOperator complement and or xor ~
" Logic operators
syn match       rebolLogicOperator "[<>=]=\="
syn match       rebolLogicOperator "<>"
syn keyword     rebolLogicOperator not
syn keyword     rebolLogicFunction all any
syn keyword     rebolLogicFunction head? tail?
syn keyword     rebolLogicFunction negative? positive? zero? even? odd?
syn keyword     rebolLogicFunction binary? block? char? date? decimal? email? empty?
syn keyword     rebolLogicFunction file? found? function? integer? issue? logic? money?
syn keyword     rebolLogicFunction native? none? object? paren? path? port? series?
syn keyword     rebolLogicFunction string? time? tuple? url? word?
syn keyword     rebolLogicFunction exists? input? same? value?

" Datatypes
syn keyword     rebolType       binary! block! char! date! decimal! email! file!
syn keyword     rebolType       function! integer! issue! logic! money! native!
syn keyword     rebolType       none! object! paren! path! port! string! time!
syn keyword     rebolType       tuple! url! word!
syn keyword     rebolTypeFunction type?

" Control statements
syn keyword     rebolStatement  break catch exit halt reduce return shield
syn keyword     rebolConditional if else
syn keyword     rebolRepeat     for forall foreach forskip loop repeat while until do

" Series statements
syn keyword     rebolStatement  change clear copy fifth find first format fourth free
syn keyword     rebolStatement  func function head insert last match next parse past
syn keyword     rebolStatement  pick remove second select skip sort tail third trim length?

" Context
syn keyword     rebolStatement  alias bind use

" Object
syn keyword     rebolStatement  import make make-object rebol info?

" I/O statements
syn keyword     rebolStatement  delete echo form format import input load mold prin
syn keyword     rebolStatement  print probe read save secure send write
syn keyword     rebolOperator   size? modified?

" Debug statement
syn keyword     rebolStatement  help probe trace

" Misc statements
syn keyword     rebolStatement  func function free

" Constants
syn keyword     rebolConstant   none


" Define the default highlighting.
" For version 5.7 and earlier: only when not done already
" For version 5.8 and later: only when an item doesn't have highlighting yet
if version >= 508 || !exists("did_rebol_syntax_inits")
  if version < 508
    let did_rebol_syntax_inits = 1
    command -nargs=+ HiLink hi link <args>
  else
    command -nargs=+ HiLink hi def link <args>
  endif

  HiLink rebolTodo     Todo

  HiLink rebolStatement Statement
  HiLink rebolLabel	Label
  HiLink rebolConditional Conditional
  HiLink rebolRepeat	Repeat

  HiLink rebolOperator	Operator
  HiLink rebolLogicOperator rebolOperator
  HiLink rebolLogicFunction rebolLogicOperator
  HiLink rebolMathOperator rebolOperator
  HiLink rebolMathFunction rebolMathOperator
  HiLink rebolBinaryOperator rebolOperator
  HiLink rebolBinaryFunction rebolBinaryOperator

  HiLink rebolType     Type
  HiLink rebolTypeFunction rebolOperator

  HiLink rebolWord     Identifier
  HiLink rebolWordPath rebolWord
  HiLink rebolFunction	Function

  HiLink rebolCharacter Character
  HiLink rebolSpecialCharacter SpecialChar
  HiLink rebolString	String

  HiLink rebolNumber   Number
  HiLink rebolInteger  rebolNumber
  HiLink rebolDecimal  rebolNumber
  HiLink rebolTime     rebolNumber
  HiLink rebolDate     rebolNumber
  HiLink rebolMoney    rebolNumber
  HiLink rebolBinary   rebolNumber
  HiLink rebolEmail    rebolString
  HiLink rebolFile     rebolString
  HiLink rebolURL      rebolString
  HiLink rebolIssue    rebolNumber
  HiLink rebolTuple    rebolNumber
  HiLink rebolFloat    Float
  HiLink rebolBoolean  Boolean

  HiLink rebolConstant Constant

  HiLink rebolComment	Comment

  HiLink rebolError	Error

  delcommand HiLink
endif

if exists("my_rebol_file")
  if file_readable(expand(my_rebol_file))
    execute "source " . my_rebol_file
  endif
endif

let b:current_syntax = "rebol"

" vim: ts=8
