" Vim syntax file " Language: Dart
" Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
" for details. All rights reserved. Use of this source code is governed by a
" BSD-style license that can be found in the LICENSE file.

" Quit when a syntax file was already loaded
if !exists("main_syntax")
  if version < 600
    syntax clear
  elseif exists("b:current_syntax")
    finish
  endif
  " we define it here so that included files can test for it
  let main_syntax='dart'
  syn region dartFold start="{" end="}" transparent fold
endif

" Ensure long multiline strings are highlighted.
syn sync fromstart

" keyword definitions
syn keyword dartConditional    if else switch
syn keyword dartRepeat         do while for
syn keyword dartBoolean        true false
syn keyword dartConstant       null
syn keyword dartTypedef        this super class typedef
syn keyword dartOperator       new is in factory const
syn match   dartOperator       "+=\=\|-=\=\|*=\=\|/=\=\|%=\=\|\~/=\=\|<<=\=\|>>=\=\|[<>]=\=\|===\=\|\!==\=\|&=\=\|\^=\=\||=\=\|||\|&&\|\[\]=\=\|=>\|!\|\~"
syn keyword dartType           void var final bool int double num dynamic
syn keyword dartCommonInterfaces String Object Math RegExp Date
syn keyword dartInterfaces       Collection Comparable Completer Duration Function Future HashMap HashSet Iterable Iterator LinkedHashMap List Map Match Options Pattern Queue Set Stopwatch StringBuffer TimeZone
syn keyword dartInterfaces_DEPRECATED       Dynamic
syn keyword dartErrors         AssertionError TypeError FallThroughError
syn keyword dartStatement      return
syn keyword dartStorageClass   static abstract
syn keyword dartExceptions     throw try catch finally
syn keyword dartExceptions     Error FormatException Exception ExpectException FutureAlreadyCompleteException FutureNotCompleteException ArgumentError IllegalJSRegExpException IntegerDivisionByZeroException NoSuchMethodError NullThrownError OutOfMemoryError RangeError StackOverflowException StateError UnimplementedError UnsupportedError
syn keyword dartExceptions_DEPRECATED     BadNumberFormatException
syn keyword dartAssert         assert
syn keyword dartClassDecl      extends implements interface
" TODO(antonm): check if labels on break and continue are supported.
syn keyword dartBranch         break continue nextgroup=dartUserLabelRef skipwhite
syn keyword dartKeyword        get set operator call equals negate external
syn match   dartUserLabelRef   "\k\+" contained
syn match   dartVarArg         "\.\.\."

" TODO(antonm): consider conditional highlighting of corelib classes.

syn region  dartLabelRegion   transparent matchgroup=dartLabel start="\<case\>" matchgroup=NONE end=":"
syn keyword dartLabel         default

" Comments
syn keyword dartTodo          contained TODO FIXME XXX
syn region  dartComment       start="/\*"  end="\*/" contains=dartTodo,dartDocLink,@Spell
syn match   dartLineComment   "//.*" contains=dartTodo,@Spell
syn match   dartLineDocComment "///.*" contains=dartTodo,dartDocLink,@Spell
syn region  dartDocLink       contained start=+\[+ end=+\]+

" Strings
syn region  dartString        start=+\z(["']\)+ end=+\z1+ contains=@Spell,dartInterpolation,dartSpecialChar
syn region  dartRawString_DEPRECATED     start=+@\z(["']\)+ end=+\z1+ contains=@Spell
syn region  dartRawString     start=+r\z(["']\)+ end=+\z1+ contains=@Spell
syn region  dartMultilineString     start=+\z("\{3\}\|'\{3\}\)+ end=+\z1+ contains=@Spell,dartInterpolation,dartSpecialChar
syn region  dartRawMultilineString     start=+r\z("\{3\}\|'\{3\}\)+ end=+\z1+ contains=@Spell
syn match   dartInterpolation contained "\$\(\w\+\|{[^}]\+}\)"
syn match   dartSpecialChar   contained "\\\(u\x\{4\}\|u{\x\+}\|x\x\x\|x{\x\+}\|.\)"

" Numbers
syn match dartNumber         "\<\d\+\(\.\d\+\)\=\>"

syn match dartInclude_DEPRECATED        "^#\(import\|include\|source\|library\)(\(\"[^\"]\+\"\|'[^']\+'\));"
syn match dartInclude        "^\(import\|include\|source\|library\)\s"

" The default highlighting.
command! -nargs=+ HiLink hi def link <args>
HiLink dartVarArg          Function
HiLink dartBranch          Conditional
HiLink dartUserLabelRef    dartUserLabel
HiLink dartLabel           Label
HiLink dartUserLabel       Label
HiLink dartConditional     Conditional
HiLink dartRepeat          Repeat
HiLink dartExceptions      Exception
HiLink dartExceptions_DEPRECATED      Todo
HiLink dartAssert          Statement
HiLink dartStorageClass    StorageClass
HiLink dartClassDecl       dartStorageClass
HiLink dartBoolean         Boolean
HiLink dartString          String
HiLink dartRawString_DEPRECATED       Todo
HiLink dartRawString       String
HiLink dartMultilineString String
HiLink dartRawMultilineString String
HiLink dartNumber          Number
HiLink dartStatement       Statement
HiLink dartOperator        Operator
HiLink dartComment         Comment
HiLink dartLineComment     Comment
HiLink dartLineDocComment  Comment
HiLink dartConstant        Constant
HiLink dartTypedef         Typedef
HiLink dartTodo            Todo
HiLink dartKeyword         Keyword
HiLink dartType            Type
HiLink dartInterpolation   PreProc
HiLink dartDocLink         SpecialComment
HiLink dartSpecialChar     SpecialChar
HiLink dartInclude_DEPRECATED         Todo
HiLink dartInclude         Include
HiLink dartErrors          Error
HiLink dartCommonInterfaces Type
HiLink dartInterfaces       Type
HiLink dartInterfaces_DEPRECATED       Todo
delcommand HiLink

let b:current_syntax = "dart"

if main_syntax == 'dart'
  unlet main_syntax
endif

let b:spell_options="contained"

" Enable automatic indentation (2 spaces)
set expandtab
set shiftwidth=2
set softtabstop=2
set cindent