xref: /vim-8.2.3635/runtime/syntax/c.vim (revision 822ff866)
1" Vim syntax file
2" Language:	C
3" Maintainer:	Bram Moolenaar <[email protected]>
4" Last Change:	2014 May 26
5
6" Quit when a (custom) syntax file was already loaded
7if exists("b:current_syntax")
8  finish
9endif
10
11let s:cpo_save = &cpo
12set cpo&vim
13
14let s:ft = matchstr(&ft, '^\([^.]\)\+')
15
16" A bunch of useful C keywords
17syn keyword	cStatement	goto break return continue asm
18syn keyword	cLabel		case default
19syn keyword	cConditional	if else switch
20syn keyword	cRepeat		while for do
21
22syn keyword	cTodo		contained TODO FIXME XXX
23
24" It's easy to accidentally add a space after a backslash that was intended
25" for line continuation.  Some compilers allow it, which makes it
26" unpredictable and should be avoided.
27syn match	cBadContinuation contained "\\\s\+$"
28
29" cCommentGroup allows adding matches for special things in comments
30syn cluster	cCommentGroup	contains=cTodo,cBadContinuation
31
32" String and Character constants
33" Highlight special characters (those which have a backslash) differently
34syn match	cSpecial	display contained "\\\(x\x\+\|\o\{1,3}\|.\|$\)"
35if !exists("c_no_utf")
36  syn match	cSpecial	display contained "\\\(u\x\{4}\|U\x\{8}\)"
37endif
38if exists("c_no_cformat")
39  syn region	cString		start=+L\="+ skip=+\\\\\|\\"+ end=+"+ contains=cSpecial,@Spell extend
40  " cCppString: same as cString, but ends at end of line
41  if !exists("cpp_no_cpp11") " ISO C++11
42    syn region cCppString	start=+\(L\|u\|u8\|U\|R\|LR\|u8R\|uR\|UR\)\="+ skip=+\\\\\|\\"\|\\$+ excludenl end=+"+ end='$' contains=cSpecial,cFormat,@Spell
43  else
44    syn region cCppString	start=+L\="+ skip=+\\\\\|\\"\|\\$+ excludenl end=+"+ end='$' contains=cSpecial,cFormat,@Spell
45  endif
46  syn region	cCppOut2	contained start="0" end="^\s*\(%:\|#\)\s*\(endif\>\|else\>\|elif\>\)" contains=cSpaceError,cCppSkip
47  syn region	cCppSkip	contained start="^\s*\(%:\|#\)\s*\(if\>\|ifdef\>\|ifndef\>\)" skip="\\$" end="^\s*\(%:\|#\)\s*endif\>" contains=cSpaceError,cCppSkip
48else
49  if !exists("c_no_c99") " ISO C99
50    syn match	cFormat		display "%\(\d\+\$\)\=[-+' #0*]*\(\d*\|\*\|\*\d\+\$\)\(\.\(\d*\|\*\|\*\d\+\$\)\)\=\([hlLjzt]\|ll\|hh\)\=\([aAbdiuoxXDOUfFeEgGcCsSpn]\|\[\^\=.[^]]*\]\)" contained
51  else
52    syn match	cFormat		display "%\(\d\+\$\)\=[-+' #0*]*\(\d*\|\*\|\*\d\+\$\)\(\.\(\d*\|\*\|\*\d\+\$\)\)\=\([hlL]\|ll\)\=\([bdiuoxXDOUfeEgGcCsSpn]\|\[\^\=.[^]]*\]\)" contained
53  endif
54  syn match	cFormat		display "%%" contained
55  syn region	cString		start=+L\="+ skip=+\\\\\|\\"+ end=+"+ contains=cSpecial,cFormat,@Spell extend
56  " cCppString: same as cString, but ends at end of line
57  syn region	cCppString	start=+L\="+ skip=+\\\\\|\\"\|\\$+ excludenl end=+"+ end='$' contains=cSpecial,cFormat,@Spell
58endif
59
60syn match	cCharacter	"L\='[^\\]'"
61syn match	cCharacter	"L'[^']*'" contains=cSpecial
62if exists("c_gnu")
63  syn match	cSpecialError	"L\='\\[^'\"?\\abefnrtv]'"
64  syn match	cSpecialCharacter "L\='\\['\"?\\abefnrtv]'"
65else
66  syn match	cSpecialError	"L\='\\[^'\"?\\abfnrtv]'"
67  syn match	cSpecialCharacter "L\='\\['\"?\\abfnrtv]'"
68endif
69syn match	cSpecialCharacter display "L\='\\\o\{1,3}'"
70syn match	cSpecialCharacter display "'\\x\x\{1,2}'"
71syn match	cSpecialCharacter display "L'\\x\x\+'"
72
73if !exists("c_no_c11") " ISO C11
74  if exists("c_no_cformat")
75    syn region	cString		start=+\%(U\|u8\=\)"+ skip=+\\\\\|\\"+ end=+"+ contains=cSpecial,@Spell extend
76  else
77    syn region	cString		start=+\%(U\|u8\=\)"+ skip=+\\\\\|\\"+ end=+"+ contains=cSpecial,cFormat,@Spell extend
78  endif
79  syn match	cCharacter	"[Uu]'[^\\]'"
80  syn match	cCharacter	"[Uu]'[^']*'" contains=cSpecial
81  if exists("c_gnu")
82    syn match	cSpecialError	"[Uu]'\\[^'\"?\\abefnrtv]'"
83    syn match	cSpecialCharacter "[Uu]'\\['\"?\\abefnrtv]'"
84  else
85    syn match	cSpecialError	"[Uu]'\\[^'\"?\\abfnrtv]'"
86    syn match	cSpecialCharacter "[Uu]'\\['\"?\\abfnrtv]'"
87  endif
88  syn match	cSpecialCharacter display "[Uu]'\\\o\{1,3}'"
89  syn match	cSpecialCharacter display "[Uu]'\\x\x\+'"
90endif
91
92"when wanted, highlight trailing white space
93if exists("c_space_errors")
94  if !exists("c_no_trail_space_error")
95    syn match	cSpaceError	display excludenl "\s\+$"
96  endif
97  if !exists("c_no_tab_space_error")
98    syn match	cSpaceError	display " \+\t"me=e-1
99  endif
100endif
101
102" This should be before cErrInParen to avoid problems with #define ({ xxx })
103if exists("c_curly_error")
104  syn match cCurlyError "}"
105  syn region	cBlock		start="{" end="}" contains=ALLBUT,cBadBlock,cCurlyError,@cParenGroup,cErrInParen,cCppParen,cErrInBracket,cCppBracket,cCppString,@Spell fold
106else
107  syn region	cBlock		start="{" end="}" transparent fold
108endif
109
110"catch errors caused by wrong parenthesis and brackets
111" also accept <% for {, %> for }, <: for [ and :> for ] (C99)
112" But avoid matching <::.
113syn cluster	cParenGroup	contains=cParenError,cIncluded,cSpecial,cCommentSkip,cCommentString,cComment2String,@cCommentGroup,cCommentStartError,cUserLabel,cBitField,cOctalZero,@cCppOutInGroup,cFormat,cNumber,cFloat,cOctal,cOctalError,cNumbersCom
114if exists("c_no_curly_error")
115  if s:ft ==# 'cpp' && !exists("cpp_no_cpp11")
116    syn region	cParen		transparent start='(' end=')' contains=ALLBUT,@cParenGroup,cCppParen,cCppString,@Spell
117    " cCppParen: same as cParen but ends at end-of-line; used in cDefine
118    syn region	cCppParen	transparent start='(' skip='\\$' excludenl end=')' end='$' contained contains=ALLBUT,@cParenGroup,cParen,cString,@Spell
119    syn match	cParenError	display ")"
120    syn match	cErrInParen	display contained "^^<%\|^%>"
121  else
122    syn region	cParen		transparent start='(' end=')' end='}'me=s-1 contains=ALLBUT,cBlock,@cParenGroup,cCppParen,cCppString,@Spell
123    " cCppParen: same as cParen but ends at end-of-line; used in cDefine
124    syn region	cCppParen	transparent start='(' skip='\\$' excludenl end=')' end='$' contained contains=ALLBUT,@cParenGroup,cParen,cString,@Spell
125    syn match	cParenError	display ")"
126    syn match	cErrInParen	display contained "^[{}]\|^<%\|^%>"
127  endif
128elseif exists("c_no_bracket_error")
129  if s:ft ==# 'cpp' && !exists("cpp_no_cpp11")
130    syn region	cParen		transparent start='(' end=')' contains=ALLBUT,@cParenGroup,cCppParen,cCppString,@Spell
131    " cCppParen: same as cParen but ends at end-of-line; used in cDefine
132    syn region	cCppParen	transparent start='(' skip='\\$' excludenl end=')' end='$' contained contains=ALLBUT,@cParenGroup,cParen,cString,@Spell
133    syn match	cParenError	display ")"
134    syn match	cErrInParen	display contained "<%\|%>"
135  else
136    syn region	cParen		transparent start='(' end=')' end='}'me=s-1 contains=ALLBUT,cBlock,@cParenGroup,cCppParen,cCppString,@Spell
137    " cCppParen: same as cParen but ends at end-of-line; used in cDefine
138    syn region	cCppParen	transparent start='(' skip='\\$' excludenl end=')' end='$' contained contains=ALLBUT,@cParenGroup,cParen,cString,@Spell
139    syn match	cParenError	display ")"
140    syn match	cErrInParen	display contained "[{}]\|<%\|%>"
141  endif
142else
143  if s:ft ==# 'cpp' && !exists("cpp_no_cpp11")
144    syn region	cParen		transparent start='(' end=')' contains=ALLBUT,@cParenGroup,cCppParen,cErrInBracket,cCppBracket,cCppString,@Spell
145    " cCppParen: same as cParen but ends at end-of-line; used in cDefine
146    syn region	cCppParen	transparent start='(' skip='\\$' excludenl end=')' end='$' contained contains=ALLBUT,@cParenGroup,cErrInBracket,cParen,cBracket,cString,@Spell
147    syn match	cParenError	display "[\])]"
148    syn match	cErrInParen	display contained "<%\|%>"
149    syn region	cBracket	transparent start='\[\|<::\@!' end=']\|:>' contains=ALLBUT,@cParenGroup,cErrInParen,cCppParen,cCppBracket,cCppString,@Spell
150  else
151    syn region	cParen		transparent start='(' end=')' end='}'me=s-1 contains=ALLBUT,cBlock,@cParenGroup,cCppParen,cErrInBracket,cCppBracket,cCppString,@Spell
152    " cCppParen: same as cParen but ends at end-of-line; used in cDefine
153    syn region	cCppParen	transparent start='(' skip='\\$' excludenl end=')' end='$' contained contains=ALLBUT,@cParenGroup,cErrInBracket,cParen,cBracket,cString,@Spell
154    syn match	cParenError	display "[\])]"
155    syn match	cErrInParen	display contained "[\]{}]\|<%\|%>"
156    syn region	cBracket	transparent start='\[\|<::\@!' end=']\|:>' end='}'me=s-1 contains=ALLBUT,cBlock,@cParenGroup,cErrInParen,cCppParen,cCppBracket,cCppString,@Spell
157  endif
158  " cCppBracket: same as cParen but ends at end-of-line; used in cDefine
159  syn region	cCppBracket	transparent start='\[\|<::\@!' skip='\\$' excludenl end=']\|:>' end='$' contained contains=ALLBUT,@cParenGroup,cErrInParen,cParen,cBracket,cString,@Spell
160  syn match	cErrInBracket	display contained "[);{}]\|<%\|%>"
161endif
162
163if s:ft ==# 'c' || exists("cpp_no_cpp11")
164  syn region	cBadBlock	keepend start="{" end="}" contained containedin=cParen,cBracket,cBadBlock transparent fold
165endif
166
167"integer number, or floating point number without a dot and with "f".
168syn case ignore
169syn match	cNumbers	display transparent "\<\d\|\.\d" contains=cNumber,cFloat,cOctalError,cOctal
170" Same, but without octal error (for comments)
171syn match	cNumbersCom	display contained transparent "\<\d\|\.\d" contains=cNumber,cFloat,cOctal
172syn match	cNumber		display contained "\d\+\(u\=l\{0,2}\|ll\=u\)\>"
173"hex number
174syn match	cNumber		display contained "0x\x\+\(u\=l\{0,2}\|ll\=u\)\>"
175" Flag the first zero of an octal number as something special
176syn match	cOctal		display contained "0\o\+\(u\=l\{0,2}\|ll\=u\)\>" contains=cOctalZero
177syn match	cOctalZero	display contained "\<0"
178syn match	cFloat		display contained "\d\+f"
179"floating point number, with dot, optional exponent
180syn match	cFloat		display contained "\d\+\.\d*\(e[-+]\=\d\+\)\=[fl]\="
181"floating point number, starting with a dot, optional exponent
182syn match	cFloat		display contained "\.\d\+\(e[-+]\=\d\+\)\=[fl]\=\>"
183"floating point number, without dot, with exponent
184syn match	cFloat		display contained "\d\+e[-+]\=\d\+[fl]\=\>"
185if !exists("c_no_c99")
186  "hexadecimal floating point number, optional leading digits, with dot, with exponent
187  syn match	cFloat		display contained "0x\x*\.\x\+p[-+]\=\d\+[fl]\=\>"
188  "hexadecimal floating point number, with leading digits, optional dot, with exponent
189  syn match	cFloat		display contained "0x\x\+\.\=p[-+]\=\d\+[fl]\=\>"
190endif
191
192" flag an octal number with wrong digits
193syn match	cOctalError	display contained "0\o*[89]\d*"
194syn case match
195
196if exists("c_comment_strings")
197  " A comment can contain cString, cCharacter and cNumber.
198  " But a "*/" inside a cString in a cComment DOES end the comment!  So we
199  " need to use a special type of cString: cCommentString, which also ends on
200  " "*/", and sees a "*" at the start of the line as comment again.
201  " Unfortunately this doesn't very well work for // type of comments :-(
202  syn match	cCommentSkip	contained "^\s*\*\($\|\s\+\)"
203  syn region cCommentString	contained start=+L\=\\\@<!"+ skip=+\\\\\|\\"+ end=+"+ end=+\*/+me=s-1 contains=cSpecial,cCommentSkip
204  syn region cComment2String	contained start=+L\=\\\@<!"+ skip=+\\\\\|\\"+ end=+"+ end="$" contains=cSpecial
205  syn region  cCommentL	start="//" skip="\\$" end="$" keepend contains=@cCommentGroup,cComment2String,cCharacter,cNumbersCom,cSpaceError,@Spell
206  if exists("c_no_comment_fold")
207    " Use "extend" here to have preprocessor lines not terminate halfway a
208    " comment.
209    syn region cComment	matchgroup=cCommentStart start="/\*" end="\*/" contains=@cCommentGroup,cCommentStartError,cCommentString,cCharacter,cNumbersCom,cSpaceError,@Spell extend
210  else
211    syn region cComment	matchgroup=cCommentStart start="/\*" end="\*/" contains=@cCommentGroup,cCommentStartError,cCommentString,cCharacter,cNumbersCom,cSpaceError,@Spell fold extend
212  endif
213else
214  syn region	cCommentL	start="//" skip="\\$" end="$" keepend contains=@cCommentGroup,cSpaceError,@Spell
215  if exists("c_no_comment_fold")
216    syn region	cComment	matchgroup=cCommentStart start="/\*" end="\*/" contains=@cCommentGroup,cCommentStartError,cSpaceError,@Spell extend
217  else
218    syn region	cComment	matchgroup=cCommentStart start="/\*" end="\*/" contains=@cCommentGroup,cCommentStartError,cSpaceError,@Spell fold extend
219  endif
220endif
221" keep a // comment separately, it terminates a preproc. conditional
222syn match	cCommentError	display "\*/"
223syn match	cCommentStartError display "/\*"me=e-1 contained
224
225syn keyword	cOperator	sizeof
226if exists("c_gnu")
227  syn keyword	cStatement	__asm__
228  syn keyword	cOperator	typeof __real__ __imag__
229endif
230syn keyword	cType		int long short char void
231syn keyword	cType		signed unsigned float double
232if !exists("c_no_ansi") || exists("c_ansi_typedefs")
233  syn keyword   cType		size_t ssize_t off_t wchar_t ptrdiff_t sig_atomic_t fpos_t
234  syn keyword   cType		clock_t time_t va_list jmp_buf FILE DIR div_t ldiv_t
235  syn keyword   cType		mbstate_t wctrans_t wint_t wctype_t
236endif
237if !exists("c_no_c99") " ISO C99
238  syn keyword	cType		_Bool bool _Complex complex _Imaginary imaginary
239  syn keyword	cType		int8_t int16_t int32_t int64_t
240  syn keyword	cType		uint8_t uint16_t uint32_t uint64_t
241  syn keyword	cType		int_least8_t int_least16_t int_least32_t int_least64_t
242  syn keyword	cType		uint_least8_t uint_least16_t uint_least32_t uint_least64_t
243  syn keyword	cType		int_fast8_t int_fast16_t int_fast32_t int_fast64_t
244  syn keyword	cType		uint_fast8_t uint_fast16_t uint_fast32_t uint_fast64_t
245  syn keyword	cType		intptr_t uintptr_t
246  syn keyword	cType		intmax_t uintmax_t
247endif
248if exists("c_gnu")
249  syn keyword	cType		__label__ __complex__ __volatile__
250endif
251
252syn keyword	cStructure	struct union enum typedef
253syn keyword	cStorageClass	static register auto volatile extern const
254if exists("c_gnu")
255  syn keyword	cStorageClass	inline __attribute__
256endif
257if !exists("c_no_c99")
258  syn keyword	cStorageClass	inline restrict
259endif
260if !exists("c_no_c11")
261  syn keyword	cStorageClass	_Alignas alignas
262  syn keyword	cOperator	_Alignof alignof
263  syn keyword	cStorageClass	_Atomic
264  syn keyword	cOperator	_Generic
265  syn keyword	cStorageClass	_Noreturn noreturn
266  syn keyword	cOperator	_Static_assert static_assert
267  syn keyword	cStorageClass	_Thread_local thread_local
268  syn keyword   cType		char16_t char32_t
269endif
270
271if !exists("c_no_ansi") || exists("c_ansi_constants") || exists("c_gnu")
272  if exists("c_gnu")
273    syn keyword cConstant __GNUC__ __FUNCTION__ __PRETTY_FUNCTION__ __func__
274  endif
275  syn keyword cConstant __LINE__ __FILE__ __DATE__ __TIME__ __STDC__
276  syn keyword cConstant __STDC_VERSION__
277  syn keyword cConstant CHAR_BIT MB_LEN_MAX MB_CUR_MAX
278  syn keyword cConstant UCHAR_MAX UINT_MAX ULONG_MAX USHRT_MAX
279  syn keyword cConstant CHAR_MIN INT_MIN LONG_MIN SHRT_MIN
280  syn keyword cConstant CHAR_MAX INT_MAX LONG_MAX SHRT_MAX
281  syn keyword cConstant SCHAR_MIN SINT_MIN SLONG_MIN SSHRT_MIN
282  syn keyword cConstant SCHAR_MAX SINT_MAX SLONG_MAX SSHRT_MAX
283  if !exists("c_no_c99")
284    syn keyword cConstant __func__
285    syn keyword cConstant LLONG_MIN LLONG_MAX ULLONG_MAX
286    syn keyword cConstant INT8_MIN INT16_MIN INT32_MIN INT64_MIN
287    syn keyword cConstant INT8_MAX INT16_MAX INT32_MAX INT64_MAX
288    syn keyword cConstant UINT8_MAX UINT16_MAX UINT32_MAX UINT64_MAX
289    syn keyword cConstant INT_LEAST8_MIN INT_LEAST16_MIN INT_LEAST32_MIN INT_LEAST64_MIN
290    syn keyword cConstant INT_LEAST8_MAX INT_LEAST16_MAX INT_LEAST32_MAX INT_LEAST64_MAX
291    syn keyword cConstant UINT_LEAST8_MAX UINT_LEAST16_MAX UINT_LEAST32_MAX UINT_LEAST64_MAX
292    syn keyword cConstant INT_FAST8_MIN INT_FAST16_MIN INT_FAST32_MIN INT_FAST64_MIN
293    syn keyword cConstant INT_FAST8_MAX INT_FAST16_MAX INT_FAST32_MAX INT_FAST64_MAX
294    syn keyword cConstant UINT_FAST8_MAX UINT_FAST16_MAX UINT_FAST32_MAX UINT_FAST64_MAX
295    syn keyword cConstant INTPTR_MIN INTPTR_MAX UINTPTR_MAX
296    syn keyword cConstant INTMAX_MIN INTMAX_MAX UINTMAX_MAX
297    syn keyword cConstant PTRDIFF_MIN PTRDIFF_MAX SIG_ATOMIC_MIN SIG_ATOMIC_MAX
298    syn keyword cConstant SIZE_MAX WCHAR_MIN WCHAR_MAX WINT_MIN WINT_MAX
299  endif
300  syn keyword cConstant FLT_RADIX FLT_ROUNDS
301  syn keyword cConstant FLT_DIG FLT_MANT_DIG FLT_EPSILON
302  syn keyword cConstant DBL_DIG DBL_MANT_DIG DBL_EPSILON
303  syn keyword cConstant LDBL_DIG LDBL_MANT_DIG LDBL_EPSILON
304  syn keyword cConstant FLT_MIN FLT_MAX FLT_MIN_EXP FLT_MAX_EXP
305  syn keyword cConstant FLT_MIN_10_EXP FLT_MAX_10_EXP
306  syn keyword cConstant DBL_MIN DBL_MAX DBL_MIN_EXP DBL_MAX_EXP
307  syn keyword cConstant DBL_MIN_10_EXP DBL_MAX_10_EXP
308  syn keyword cConstant LDBL_MIN LDBL_MAX LDBL_MIN_EXP LDBL_MAX_EXP
309  syn keyword cConstant LDBL_MIN_10_EXP LDBL_MAX_10_EXP
310  syn keyword cConstant HUGE_VAL CLOCKS_PER_SEC NULL
311  syn keyword cConstant LC_ALL LC_COLLATE LC_CTYPE LC_MONETARY
312  syn keyword cConstant LC_NUMERIC LC_TIME
313  syn keyword cConstant SIG_DFL SIG_ERR SIG_IGN
314  syn keyword cConstant SIGABRT SIGFPE SIGILL SIGHUP SIGINT SIGSEGV SIGTERM
315  " Add POSIX signals as well...
316  syn keyword cConstant SIGABRT SIGALRM SIGCHLD SIGCONT SIGFPE SIGHUP
317  syn keyword cConstant SIGILL SIGINT SIGKILL SIGPIPE SIGQUIT SIGSEGV
318  syn keyword cConstant SIGSTOP SIGTERM SIGTRAP SIGTSTP SIGTTIN SIGTTOU
319  syn keyword cConstant SIGUSR1 SIGUSR2
320  syn keyword cConstant _IOFBF _IOLBF _IONBF BUFSIZ EOF WEOF
321  syn keyword cConstant FOPEN_MAX FILENAME_MAX L_tmpnam
322  syn keyword cConstant SEEK_CUR SEEK_END SEEK_SET
323  syn keyword cConstant TMP_MAX stderr stdin stdout
324  syn keyword cConstant EXIT_FAILURE EXIT_SUCCESS RAND_MAX
325  " POSIX 2001
326  syn keyword cConstant SIGBUS SIGPOLL SIGPROF SIGSYS SIGURG
327  syn keyword cConstant SIGVTALRM SIGXCPU SIGXFSZ
328  " Add POSIX errors as well
329  syn keyword cConstant E2BIG EACCES EAGAIN EBADF EBADMSG EBUSY
330  syn keyword cConstant ECANCELED ECHILD EDEADLK EDOM EEXIST EFAULT
331  syn keyword cConstant EFBIG EILSEQ EINPROGRESS EINTR EINVAL EIO EISDIR
332  syn keyword cConstant EMFILE EMLINK EMSGSIZE ENAMETOOLONG ENFILE ENODEV
333  syn keyword cConstant ENOENT ENOEXEC ENOLCK ENOMEM ENOSPC ENOSYS
334  syn keyword cConstant ENOTDIR ENOTEMPTY ENOTSUP ENOTTY ENXIO EPERM
335  syn keyword cConstant EPIPE ERANGE EROFS ESPIPE ESRCH ETIMEDOUT EXDEV
336  " math.h
337  syn keyword cConstant M_E M_LOG2E M_LOG10E M_LN2 M_LN10 M_PI M_PI_2 M_PI_4
338  syn keyword cConstant M_1_PI M_2_PI M_2_SQRTPI M_SQRT2 M_SQRT1_2
339endif
340if !exists("c_no_c99") " ISO C99
341  syn keyword cConstant true false
342endif
343
344" Accept %: for # (C99)
345syn region	cPreCondit	start="^\s*\(%:\|#\)\s*\(if\|ifdef\|ifndef\|elif\)\>" skip="\\$" end="$" keepend contains=cComment,cCommentL,cCppString,cCharacter,cCppParen,cParenError,cNumbers,cCommentError,cSpaceError
346syn match	cPreConditMatch	display "^\s*\(%:\|#\)\s*\(else\|endif\)\>"
347if !exists("c_no_if0")
348  syn cluster	cCppOutInGroup	contains=cCppInIf,cCppInElse,cCppInElse2,cCppOutIf,cCppOutIf2,cCppOutElse,cCppInSkip,cCppOutSkip
349  syn region	cCppOutWrapper	start="^\s*\(%:\|#\)\s*if\s\+0\+\s*\($\|//\|/\*\|&\)" end=".\@=\|$" contains=cCppOutIf,cCppOutElse,@NoSpell fold
350  syn region	cCppOutIf	contained start="0\+" matchgroup=cCppOutWrapper end="^\s*\(%:\|#\)\s*endif\>" contains=cCppOutIf2,cCppOutElse
351  if !exists("c_no_if0_fold")
352    syn region	cCppOutIf2	contained matchgroup=cCppOutWrapper start="0\+" end="^\s*\(%:\|#\)\s*\(else\>\|elif\s\+\(0\+\s*\($\|//\|/\*\|&\)\)\@!\|endif\>\)"me=s-1 contains=cSpaceError,cCppOutSkip,@Spell fold
353  else
354    syn region	cCppOutIf2	contained matchgroup=cCppOutWrapper start="0\+" end="^\s*\(%:\|#\)\s*\(else\>\|elif\s\+\(0\+\s*\($\|//\|/\*\|&\)\)\@!\|endif\>\)"me=s-1 contains=cSpaceError,cCppOutSkip,@Spell
355  endif
356  syn region	cCppOutElse	contained matchgroup=cCppOutWrapper start="^\s*\(%:\|#\)\s*\(else\|elif\)" end="^\s*\(%:\|#\)\s*endif\>"me=s-1 contains=TOP,cPreCondit
357  syn region	cCppInWrapper	start="^\s*\(%:\|#\)\s*if\s\+0*[1-9]\d*\s*\($\|//\|/\*\||\)" end=".\@=\|$" contains=cCppInIf,cCppInElse fold
358  syn region	cCppInIf	contained matchgroup=cCppInWrapper start="\d\+" end="^\s*\(%:\|#\)\s*endif\>" contains=TOP,cPreCondit
359  if !exists("c_no_if0_fold")
360    syn region	cCppInElse	contained start="^\s*\(%:\|#\)\s*\(else\>\|elif\s\+\(0*[1-9]\d*\s*\($\|//\|/\*\||\)\)\@!\)" end=".\@=\|$" containedin=cCppInIf contains=cCppInElse2 fold
361  else
362    syn region	cCppInElse	contained start="^\s*\(%:\|#\)\s*\(else\>\|elif\s\+\(0*[1-9]\d*\s*\($\|//\|/\*\||\)\)\@!\)" end=".\@=\|$" containedin=cCppInIf contains=cCppInElse2
363  endif
364  syn region	cCppInElse2	contained matchgroup=cCppInWrapper start="^\s*\(%:\|#\)\s*\(else\|elif\)\([^/]\|/[^/*]\)*" end="^\s*\(%:\|#\)\s*endif\>"me=s-1 contains=cSpaceError,cCppOutSkip,@Spell
365  syn region	cCppOutSkip	contained start="^\s*\(%:\|#\)\s*\(if\>\|ifdef\>\|ifndef\>\)" skip="\\$" end="^\s*\(%:\|#\)\s*endif\>" contains=cSpaceError,cCppOutSkip
366  syn region	cCppInSkip	contained matchgroup=cCppInWrapper start="^\s*\(%:\|#\)\s*\(if\s\+\(\d\+\s*\($\|//\|/\*\||\|&\)\)\@!\|ifdef\>\|ifndef\>\)" skip="\\$" end="^\s*\(%:\|#\)\s*endif\>" containedin=cCppOutElse,cCppInIf,cCppInSkip contains=TOP,cPreProc
367endif
368syn region	cIncluded	display contained start=+"+ skip=+\\\\\|\\"+ end=+"+
369syn match	cIncluded	display contained "<[^>]*>"
370syn match	cInclude	display "^\s*\(%:\|#\)\s*include\>\s*["<]" contains=cIncluded
371"syn match cLineSkip	"\\$"
372syn cluster	cPreProcGroup	contains=cPreCondit,cIncluded,cInclude,cDefine,cErrInParen,cErrInBracket,cUserLabel,cSpecial,cOctalZero,cCppOutWrapper,cCppInWrapper,@cCppOutInGroup,cFormat,cNumber,cFloat,cOctal,cOctalError,cNumbersCom,cString,cCommentSkip,cCommentString,cComment2String,@cCommentGroup,cCommentStartError,cParen,cBracket,cMulti,cBadBlock
373syn region	cDefine		start="^\s*\(%:\|#\)\s*\(define\|undef\)\>" skip="\\$" end="$" keepend contains=ALLBUT,@cPreProcGroup,@Spell
374syn region	cPreProc	start="^\s*\(%:\|#\)\s*\(pragma\>\|line\>\|warning\>\|warn\>\|error\>\)" skip="\\$" end="$" keepend contains=ALLBUT,@cPreProcGroup,@Spell
375
376" Highlight User Labels
377syn cluster	cMultiGroup	contains=cIncluded,cSpecial,cCommentSkip,cCommentString,cComment2String,@cCommentGroup,cCommentStartError,cUserCont,cUserLabel,cBitField,cOctalZero,cCppOutWrapper,cCppInWrapper,@cCppOutInGroup,cFormat,cNumber,cFloat,cOctal,cOctalError,cNumbersCom,cCppParen,cCppBracket,cCppString
378if s:ft ==# 'c' || exists("cpp_no_cpp11")
379  syn region	cMulti		transparent start='?' skip='::' end=':' contains=ALLBUT,@cMultiGroup,@Spell
380endif
381" Avoid matching foo::bar() in C++ by requiring that the next char is not ':'
382syn cluster	cLabelGroup	contains=cUserLabel
383syn match	cUserCont	display "^\s*\I\i*\s*:$" contains=@cLabelGroup
384syn match	cUserCont	display ";\s*\I\i*\s*:$" contains=@cLabelGroup
385syn match	cUserCont	display "^\s*\I\i*\s*:[^:]"me=e-1 contains=@cLabelGroup
386syn match	cUserCont	display ";\s*\I\i*\s*:[^:]"me=e-1 contains=@cLabelGroup
387
388syn match	cUserLabel	display "\I\i*" contained
389
390" Avoid recognizing most bitfields as labels
391syn match	cBitField	display "^\s*\I\i*\s*:\s*[1-9]"me=e-1 contains=cType
392syn match	cBitField	display ";\s*\I\i*\s*:\s*[1-9]"me=e-1 contains=cType
393
394if exists("c_minlines")
395  let b:c_minlines = c_minlines
396else
397  if !exists("c_no_if0")
398    let b:c_minlines = 50	" #if 0 constructs can be long
399  else
400    let b:c_minlines = 15	" mostly for () constructs
401  endif
402endif
403if exists("c_curly_error")
404  syn sync fromstart
405else
406  exec "syn sync ccomment cComment minlines=" . b:c_minlines
407endif
408
409" Define the default highlighting.
410" Only used when an item doesn't have highlighting yet
411hi def link cFormat		cSpecial
412hi def link cCppString		cString
413hi def link cCommentL		cComment
414hi def link cCommentStart	cComment
415hi def link cLabel		Label
416hi def link cUserLabel		Label
417hi def link cConditional	Conditional
418hi def link cRepeat		Repeat
419hi def link cCharacter		Character
420hi def link cSpecialCharacter	cSpecial
421hi def link cNumber		Number
422hi def link cOctal		Number
423hi def link cOctalZero		PreProc	 " link this to Error if you want
424hi def link cFloat		Float
425hi def link cOctalError		cError
426hi def link cParenError		cError
427hi def link cErrInParen		cError
428hi def link cErrInBracket	cError
429hi def link cCommentError	cError
430hi def link cCommentStartError	cError
431hi def link cSpaceError		cError
432hi def link cSpecialError	cError
433hi def link cCurlyError		cError
434hi def link cOperator		Operator
435hi def link cStructure		Structure
436hi def link cStorageClass	StorageClass
437hi def link cInclude		Include
438hi def link cPreProc		PreProc
439hi def link cDefine		Macro
440hi def link cIncluded		cString
441hi def link cError		Error
442hi def link cStatement		Statement
443hi def link cCppInWrapper	cCppOutWrapper
444hi def link cCppOutWrapper	cPreCondit
445hi def link cPreConditMatch	cPreCondit
446hi def link cPreCondit		PreCondit
447hi def link cType		Type
448hi def link cConstant		Constant
449hi def link cCommentString	cString
450hi def link cComment2String	cString
451hi def link cCommentSkip	cComment
452hi def link cString		String
453hi def link cComment		Comment
454hi def link cSpecial		SpecialChar
455hi def link cTodo		Todo
456hi def link cBadContinuation	Error
457hi def link cCppOutSkip		cCppOutIf2
458hi def link cCppInElse2		cCppOutIf2
459hi def link cCppOutIf2		cCppOut2  " Old syntax group for #if 0 body
460hi def link cCppOut2		cCppOut  " Old syntax group for #if of #if 0
461hi def link cCppOut		Comment
462
463let b:current_syntax = "c"
464
465unlet s:ft
466
467let &cpo = s:cpo_save
468unlet s:cpo_save
469" vim: ts=8
470