" Vim syntax file for xonsh
" Language: Xonsh Shell Script
" Maintainer: Abhishek Mukherjee
" Latest Revision: 05 January 2016


if exists("b:current_syntax")
  finish
endif

if exists("xsh_highlight_all")
  let xsh_highlight_numbers = 1
  let xsh_highlight_builtins = 1
  let xsh_highlight_exceptions = 1
  let xsh_highlight_space_errors = 1
endif

syn keyword xshStatement    as assert break continue del except exec finally
syn keyword xshStatement    global lambda pass print raise return try with
syn keyword xshStatement    yield
syn match xshEnvironmentVariable "\v\$[a-zA-Z0-9_]+"

syn keyword xshStatement    def class nextgroup=xshFunction skipwhite

syn match xshFunction    "[a-zA-Z_][a-zA-Z0-9_]*" contained

syn keyword xshRepeat    for while

syn keyword xshConditional    if elif else

syn keyword xshOperator    and in is not or

syn keyword xshPreCondit    import from

syn match xshComment    "#.*$" contains=xshTodo

syn keyword xshTodo    TODO FIXME XXX contained

syn region xshString    matchgroup=Normal start=+[uU]\='+ end=+'+ skip=+\\\\\|\\'+ contains=xshEscape
syn region xshString    matchgroup=Normal start=+[uU]\="+ end=+"+ skip=+\\\\\|\\"+ contains=xshEscape
syn region xshString    matchgroup=Normal start=+[uU]\="""+ end=+"""+  contains=xshEscape
syn region xshString    matchgroup=Normal start=+[uU]\='''+ end=+'''+  contains=xshEscape
syn region xshString    matchgroup=Normal start=+[uU]\=[rR]'+ end=+'+ skip=+\\\\\|\\'+ 
syn region xshString    matchgroup=Normal start=+[uU]\=[rR]"+ end=+"+ skip=+\\\\\|\\"+ 
syn region xshString    matchgroup=Normal start=+[uU]\=[rR]"""+ end=+"""+  
syn region xshString    matchgroup=Normal start=+[uU]\=[rR]'''+ end=+'''+  

syn match xshEscape    +\\[abfnrtv\'"\\]+ contained
syn match xshEscape    "\\\o\{1,3}" contained
syn match xshEscape    "\\x\x\{2}" contained
syn match xshEscape    "\(\\u\x\{4}\|\\U\x\{8}\)" contained

syn match xshEscape    "\\$"


if exists("xsh_highlight_numbers")
  syn match xshNumber    "\<0x\x\+[Ll]\=\>"
  syn match xshNumber    "\<\d\+[LljJ]\=\>"
  syn match xshNumber    "\.\d\+\([eE][+-]\=\d\+\)\=[jJ]\=\>"
  syn match xshNumber    "\<\d\+\.\([eE][+-]\=\d\+\)\=[jJ]\=\>"
  syn match xshNumber    "\<\d\+\.\d\+\([eE][+-]\=\d\+\)\=[jJ]\=\>"

endif


if exists("xsh_highlight_builtins")
  syn keyword xshBuiltin    Ellipsis False None NotImplemented True __debug__
  syn keyword xshBuiltin    __import__ abs all any apply basestring bin bool
  syn keyword xshBuiltin    buffer bytearray bytes callable chr classmethod
  syn keyword xshBuiltin    cmp coerce compile complex copyright credits
  syn keyword xshBuiltin    delattr dict dir divmod enumerate eval execfile
  syn keyword xshBuiltin    exit file filter float format frozenset getattr
  syn keyword xshBuiltin    globals hasattr hash help hex id input int intern
  syn keyword xshBuiltin    isinstance issubclass iter len license list
  syn keyword xshBuiltin    locals long map max memoryview min next object
  syn keyword xshBuiltin    oct open ord pow print property quit range
  syn keyword xshBuiltin    raw_input reduce reload repr reversed round set
  syn keyword xshBuiltin    setattr slice sorted staticmethod str sum super
  syn keyword xshBuiltin    tuple type unichr unicode vars xrange zip

endif


if exists("xsh_highlight_exceptions")
  syn keyword xshException    ArithmeticError AssertionError AttributeError
  syn keyword xshException    BaseException BufferError BytesWarning
  syn keyword xshException    DeprecationWarning EOFError EnvironmentError
  syn keyword xshException    Exception FloatingPointError FutureWarning
  syn keyword xshException    GeneratorExit IOError ImportError ImportWarning
  syn keyword xshException    IndentationError IndexError KeyError
  syn keyword xshException    KeyboardInterrupt LookupError MemoryError
  syn keyword xshException    NameError NotImplementedError OSError
  syn keyword xshException    OverflowError PendingDeprecationWarning
  syn keyword xshException    ReferenceError RuntimeError RuntimeWarning
  syn keyword xshException    StandardError StopIteration SyntaxError
  syn keyword xshException    SyntaxWarning SystemError SystemExit TabError
  syn keyword xshException    TypeError UnboundLocalError UnicodeDecodeError
  syn keyword xshException    UnicodeEncodeError UnicodeError
  syn keyword xshException    UnicodeTranslateError UnicodeWarning
  syn keyword xshException    UserWarning ValueError Warning
  syn keyword xshException    ZeroDivisionError

endif


if exists("xsh_highlight_space_errors")
  syn match xshSpaceError    display excludenl "\S\s\+$"ms=s+1
  syn match xshSpaceError    display " \+\t"
  syn match xshSpaceError    display "\t\+ "

endif


  hi def link xshStatement Statement
  hi def link xshStatement Statement
  hi def link xshFunction Function
  hi def link xshRepeat Repeat
  hi def link xshConditional Conditional
  hi def link xshOperator Operator
  hi def link xshPreCondit PreCondit
  hi def link xshComment Comment
  hi def link xshTodo Todo
  hi def link xshString String
  hi def link xshEscape Special
  hi def link xshEscape Special

  if exists("xsh_highlight_numbers")
    hi def link xshNumber Number
  endif
  hi def link xshEnvironmentVariable Number

  if exists("xsh_highlight_builtins")
    hi def link xshBuiltin Function
  endif

  if exists("xsh_highlight_exceptions")
    hi def link xshException Exception
  endif

  if exists("xsh_highlight_space_errors")
    hi def link xshSpaceError Error
  endif


" Uncomment the 'minlines' statement line and comment out the 'maxlines'
" statement line; changes behaviour to look at least 2000 lines previously for
" syntax matches instead of at most 200 lines
syn sync match xshSync grouphere NONE "):$"
syn sync maxlines=200
"syn sync minlines=2000

let b:current_syntax = "xsh"