" Vim syntax file
" Language:	Pike
" Maintainer:	Francesco Chemolli <kinkie@kame.usr.dsi.unimi.it>
" Last Change:	2001 May 10

" 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

" A bunch of useful C keywords
syn keyword pikeStatement	goto break return continue
syn keyword pikeLabel		case default
syn keyword pikeConditional	if else switch
syn keyword pikeRepeat		while for foreach do
syn keyword pikeStatement	gauge destruct lambda inherit import typeof
syn keyword pikeException	catch
syn keyword pikeType		inline nomask private protected public static


syn keyword pikeTodo contained	TODO FIXME XXX

" String and Character constants
" Highlight special characters (those which have a backslash) differently
syn match pikeSpecial contained	"\\[0-7][0-7][0-7]\=\|\\."
syn region pikeString		start=+"+ skip=+\\\\\|\\"+ end=+"+ contains=pikeSpecial
syn match pikeCharacter		"'[^\\]'"
syn match pikeSpecialCharacter	"'\\.'"
syn match pikeSpecialCharacter	"'\\[0-7][0-7]'"
syn match pikeSpecialCharacter	"'\\[0-7][0-7][0-7]'"

" Compound data types
syn region pikeCompoundType start='({' contains=pikeString,pikeCompoundType,pikeNumber,pikeFloat end='})'
syn region pikeCompoundType start='(\[' contains=pikeString,pikeCompoundType,pikeNumber,pikeFloat end='\])'
syn region pikeCompoundType start='(<' contains=pikeString,pikeCompoundType,pikeNumber,pikeFloat end='>)'

"catch errors caused by wrong parenthesis
syn region pikeParen		transparent start='([^{[<(]' end=')' contains=ALLBUT,pikeParenError,pikeIncluded,pikeSpecial,pikeTodo,pikeUserLabel,pikeBitField
syn match pikeParenError		")"
syn match pikeInParen contained	"[^(][{}][^)]"

"integer number, or floating point number without a dot and with "f".
syn case ignore
syn match pikeNumber		"\<\d\+\(u\=l\=\|lu\|f\)\>"
"floating point number, with dot, optional exponent
syn match pikeFloat		"\<\d\+\.\d*\(e[-+]\=\d\+\)\=[fl]\=\>"
"floating point number, starting with a dot, optional exponent
syn match pikeFloat		"\.\d\+\(e[-+]\=\d\+\)\=[fl]\=\>"
"floating point number, without dot, with exponent
syn match pikeFloat		"\<\d\+e[-+]\=\d\+[fl]\=\>"
"hex number
syn match pikeNumber		"\<0x[0-9a-f]\+\(u\=l\=\|lu\)\>"
"syn match pikeIdentifier	"\<[a-z_][a-z0-9_]*\>"
syn case match
" flag an octal number with wrong digits
syn match pikeOctalError		"\<0[0-7]*[89]"

if exists("c_comment_strings")
  " A comment can contain pikeString, pikeCharacter and pikeNumber.
  " But a "*/" inside a pikeString in a pikeComment DOES end the comment!  So we
  " need to use a special type of pikeString: pikeCommentString, which also ends on
  " "*/", and sees a "*" at the start of the line as comment again.
  " Unfortunately this doesn't very well work for // type of comments :-(
  syntax match pikeCommentSkip	contained "^\s*\*\($\|\s\+\)"
  syntax region pikeCommentString	contained start=+"+ skip=+\\\\\|\\"+ end=+"+ end=+\*/+me=s-1 contains=pikeSpecial,pikeCommentSkip
  syntax region pikeComment2String	contained start=+"+ skip=+\\\\\|\\"+ end=+"+ end="$" contains=pikeSpecial
  syntax region pikeComment	start="/\*" end="\*/" contains=pikeTodo,pikeCommentString,pikeCharacter,pikeNumber,pikeFloat
  syntax match  pikeComment	"//.*" contains=pikeTodo,pikeComment2String,pikeCharacter,pikeNumber
  syntax match  pikeComment	"#\!.*" contains=pikeTodo,pikeComment2String,pikeCharacter,pikeNumber
else
  syn region pikeComment		start="/\*" end="\*/" contains=pikeTodo
  syn match pikeComment		"//.*" contains=pikeTodo
  syn match pikeComment		"#!.*" contains=pikeTodo
endif
syntax match pikeCommentError	"\*/"

syn keyword pikeOperator	sizeof
syn keyword pikeType		int string void float mapping array multiset mixed
syn keyword pikeType		program object function

syn region pikePreCondit	start="^\s*#\s*\(if\>\|ifdef\>\|ifndef\>\|elif\>\|else\>\|endif\>\)" skip="\\$" end="$" contains=pikeComment,pikeString,pikeCharacter,pikeNumber,pikeCommentError
syn region pikeIncluded contained start=+"+ skip=+\\\\\|\\"+ end=+"+
syn match pikeIncluded contained "<[^>]*>"
syn match pikeInclude		"^\s*#\s*include\>\s*["<]" contains=pikeIncluded
"syn match pikeLineSkip	"\\$"
syn region pikeDefine		start="^\s*#\s*\(define\>\|undef\>\)" skip="\\$" end="$" contains=ALLBUT,pikePreCondit,pikeIncluded,pikeInclude,pikeDefine,pikeInParen
syn region pikePreProc		start="^\s*#\s*\(pragma\>\|line\>\|warning\>\|warn\>\|error\>\)" skip="\\$" end="$" contains=ALLBUT,pikePreCondit,pikeIncluded,pikeInclude,pikeDefine,pikeInParen

" Highlight User Labels
syn region	pikeMulti		transparent start='?' end=':' contains=ALLBUT,pikeIncluded,pikeSpecial,pikeTodo,pikeUserLabel,pikeBitField
" Avoid matching foo::bar() in C++ by requiring that the next char is not ':'
syn match	pikeUserLabel	"^\s*\I\i*\s*:$"
syn match	pikeUserLabel	";\s*\I\i*\s*:$"ms=s+1
syn match	pikeUserLabel	"^\s*\I\i*\s*:[^:]"me=e-1
syn match	pikeUserLabel	";\s*\I\i*\s*:[^:]"ms=s+1,me=e-1

" Avoid recognizing most bitfields as labels
syn match	pikeBitField	"^\s*\I\i*\s*:\s*[1-9]"me=e-1
syn match	pikeBitField	";\s*\I\i*\s*:\s*[1-9]"me=e-1

syn sync ccomment pikeComment minlines=10

" 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_pike_syntax_inits")
  if version < 508
    let did_pike_syntax_inits = 1
    command -nargs=+ HiLink hi link <args>
  else
    command -nargs=+ HiLink hi def link <args>
  endif

  HiLink pikeLabel		Label
  HiLink pikeUserLabel		Label
  HiLink pikeConditional	Conditional
  HiLink pikeRepeat		Repeat
  HiLink pikeCharacter		Character
  HiLink pikeSpecialCharacter pikeSpecial
  HiLink pikeNumber		Number
  HiLink pikeFloat		Float
  HiLink pikeOctalError		pikeError
  HiLink pikeParenError		pikeError
  HiLink pikeInParen		pikeError
  HiLink pikeCommentError	pikeError
  HiLink pikeOperator		Operator
  HiLink pikeInclude		Include
  HiLink pikePreProc		PreProc
  HiLink pikeDefine		Macro
  HiLink pikeIncluded		pikeString
  HiLink pikeError		Error
  HiLink pikeStatement		Statement
  HiLink pikePreCondit		PreCondit
  HiLink pikeType		Type
  HiLink pikeCommentError	pikeError
  HiLink pikeCommentString	pikeString
  HiLink pikeComment2String	pikeString
  HiLink pikeCommentSkip	pikeComment
  HiLink pikeString		String
  HiLink pikeComment		Comment
  HiLink pikeSpecial		SpecialChar
  HiLink pikeTodo		Todo
  HiLink pikeException		pikeStatement
  HiLink pikeCompoundType	Constant
  "HiLink pikeIdentifier	Identifier

  delcommand HiLink
endif

let b:current_syntax = "pike"

" vim: ts=8