1 /********************************************************************
2  * COPYRIGHT:
3  * Copyright (c) 2008-2010, International Business Machines Corporation and
4  * others. All Rights Reserved.
5  ********************************************************************/
6 //
7 //  file:  regextxt.h
8 //
9 //  This file contains utility code for supporting UText in the regular expression engine.
10 //
11 //  This class is internal to the regular expression implementation.
12 //  For the public Regular Expression API, see the file "unicode/regex.h"
13 //
14 
15 #ifndef _REGEXTXT_H
16 #define _REGEXTXT_H
17 
18 #include "unicode/utypes.h"
19 #include "unicode/utext.h"
20 
21 U_NAMESPACE_BEGIN
22 
23 #define UTEXT_USES_U16(ut) (NULL==((ut)->pFuncs->mapNativeIndexToUTF16))
24 
25 #if 0
26 #define REGEX_DISABLE_CHUNK_MODE 1
27 #endif
28 
29 #ifdef REGEX_DISABLE_CHUNK_MODE
30 #  define UTEXT_FULL_TEXT_IN_CHUNK(ut,len) (FALSE)
31 #else
32 #  define UTEXT_FULL_TEXT_IN_CHUNK(ut,len) ((0==((ut)->chunkNativeStart))&&((len)==((ut)->chunkNativeLimit))&&((len)==((ut)->nativeIndexingLimit)))
33 #endif
34 
35 struct URegexUTextUnescapeCharContext {
36     UText *text;
37     int32_t lastOffset;
38 };
39 #define U_REGEX_UTEXT_UNESCAPE_CONTEXT(text) { (text), -1 }
40 
41 U_CFUNC UChar U_CALLCONV
42 uregex_utext_unescape_charAt(int32_t offset, void * /* struct URegexUTextUnescapeCharContext* */ context);
43 U_CFUNC UChar U_CALLCONV
44 uregex_ucstr_unescape_charAt(int32_t offset, void * /* UChar* */ context);
45 
46 U_NAMESPACE_END
47 
48 #endif
49