ceph/src/boost/libs/wave/src/cpplexer/re2clex/cpp.re

   1 /*=============================================================================
   2     Boost.Wave: A Standard compliant C++ preprocessor library
   3
   4     Copyright (c) 2001 Daniel C. Nuffer
   5     Copyright (c) 2001-2013 Hartmut Kaiser.
   6     Distributed under the Boost Software License, Version 1.0. (See accompanying
   7     file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   8
   9     This is a lexer conforming to the Standard with a few exceptions.
  10     So it does allow the '$' to be part of identifiers. If you need strict
  11     Standards conforming behaviour, please include the lexer definition
  12     provided in the file strict_cpp.re.
  13
  14     TODO:
  15         handle errors better.
  16 =============================================================================*/
  17
  18 /*!re2c
  19 re2c:indent:string  = "    ";
  20 any                 = [\t\v\f\r\n\040-\377];
  21 anyctrl             = [\001-\037];
  22 OctalDigit          = [0-7];
  23 Digit               = [0-9];
  24 HexDigit            = [a-fA-F0-9];
  25 Integer             = (("0" [xX] HexDigit+) | ("0" OctalDigit*) | ([1-9] Digit*));
  26 ExponentStart       = [Ee] [+-];
  27 ExponentPart        = [Ee] [+-]? Digit+;
  28 FractionalConstant  = (Digit* "." Digit+) | (Digit+ ".");
  29 FloatingSuffix      = [fF] [lL]? | [lL] [fF]?;
  30 IntegerSuffix       = [uU] [lL]? | [lL] [uU]?;
  31 LongIntegerSuffix   = [uU] ([lL] [lL]) | ([lL] [lL]) [uU]?;
  32 MSLongIntegerSuffix = "u"? "i64";
  33 Backslash           = [\\] | "??/";
  34 EscapeSequence      = Backslash ([abfnrtv?'"] | Backslash | "x" HexDigit+ | OctalDigit OctalDigit? OctalDigit?);
  35 HexQuad             = HexDigit HexDigit HexDigit HexDigit;
  36 UniversalChar       = Backslash ("u" HexQuad | "U" HexQuad HexQuad);
  37 Newline             = "\r\n" | "\n" | "\r";
  38 PPSpace             = ([ \t\f\v]|("/*"(any\[*]|Newline|("*"+(any\[*/]|Newline)))*"*"+"/"))*;
  39 Pound               = "#" | "??=" | "%:";
  40 NonDigit            = [a-zA-Z_$] | UniversalChar;
  41 */
  42
  43 /*!re2c
  44     "/*"            { goto ccomment; }
  45     "//"            { goto cppcomment; }
  46     "."? Digit      { goto pp_number; }
  47
  48     "alignas"       { BOOST_WAVE_RET(s->act_in_cpp0x_mode ? T_ALIGNAS : T_IDENTIFIER); }
  49     "alignof"       { BOOST_WAVE_RET(s->act_in_cpp0x_mode ? T_ALIGNOF : T_IDENTIFIER); }
  50     "asm"           { BOOST_WAVE_RET(T_ASM); }
  51     "auto"          { BOOST_WAVE_RET(T_AUTO); }
  52     "bool"          { BOOST_WAVE_RET(T_BOOL); }
  53     "break"         { BOOST_WAVE_RET(T_BREAK); }
  54     "case"          { BOOST_WAVE_RET(T_CASE); }
  55     "catch"         { BOOST_WAVE_RET(T_CATCH); }
  56     "char"          { BOOST_WAVE_RET(T_CHAR); }
  57     "char16_t"      { BOOST_WAVE_RET(s->act_in_cpp0x_mode ? T_CHAR16_T : T_IDENTIFIER); }
  58     "char32_t"      { BOOST_WAVE_RET(s->act_in_cpp0x_mode ? T_CHAR32_T : T_IDENTIFIER); }
  59     "class"         { BOOST_WAVE_RET(T_CLASS); }
  60     "const"         { BOOST_WAVE_RET(T_CONST); }
  61     "constexpr"     { BOOST_WAVE_RET(s->act_in_cpp0x_mode ? T_CONSTEXPR : T_IDENTIFIER); }
  62     "const_cast"    { BOOST_WAVE_RET(T_CONSTCAST); }
  63     "continue"      { BOOST_WAVE_RET(T_CONTINUE); }
  64     "decltype"      { BOOST_WAVE_RET(s->act_in_cpp0x_mode ? T_DECLTYPE : T_IDENTIFIER); }
  65     "default"       { BOOST_WAVE_RET(T_DEFAULT); }
  66     "delete"        { BOOST_WAVE_RET(T_DELETE); }
  67     "do"            { BOOST_WAVE_RET(T_DO); }
  68     "double"        { BOOST_WAVE_RET(T_DOUBLE); }
  69     "dynamic_cast"  { BOOST_WAVE_RET(T_DYNAMICCAST); }
  70     "else"          { BOOST_WAVE_RET(T_ELSE); }
  71     "enum"          { BOOST_WAVE_RET(T_ENUM); }
  72     "explicit"      { BOOST_WAVE_RET(T_EXPLICIT); }
  73     "export"        { BOOST_WAVE_RET(T_EXPORT); }
  74     "extern"        { BOOST_WAVE_RET(T_EXTERN); }
  75     "false"         { BOOST_WAVE_RET(T_FALSE); }
  76     "float"         { BOOST_WAVE_RET(T_FLOAT); }
  77     "for"           { BOOST_WAVE_RET(T_FOR); }
  78     "friend"        { BOOST_WAVE_RET(T_FRIEND); }
  79     "goto"          { BOOST_WAVE_RET(T_GOTO); }
  80     "if"            { BOOST_WAVE_RET(T_IF); }
  81     "import"        { BOOST_WAVE_RET(s->enable_import_keyword ? T_IMPORT : T_IDENTIFIER); }
  82     "inline"        { BOOST_WAVE_RET(T_INLINE); }
  83     "int"           { BOOST_WAVE_RET(T_INT); }
  84     "long"          { BOOST_WAVE_RET(T_LONG); }
  85     "mutable"       { BOOST_WAVE_RET(T_MUTABLE); }
  86     "namespace"     { BOOST_WAVE_RET(T_NAMESPACE); }
  87     "new"           { BOOST_WAVE_RET(T_NEW); }
  88     "noexcept"      { BOOST_WAVE_RET(s->act_in_cpp0x_mode ? T_NOEXCEPT : T_IDENTIFIER); }
  89     "nullptr"       { BOOST_WAVE_RET(s->act_in_cpp0x_mode ? T_NULLPTR : T_IDENTIFIER); }
  90     "operator"      { BOOST_WAVE_RET(T_OPERATOR); }
  91     "private"       { BOOST_WAVE_RET(T_PRIVATE); }
  92     "protected"     { BOOST_WAVE_RET(T_PROTECTED); }
  93     "public"        { BOOST_WAVE_RET(T_PUBLIC); }
  94     "register"      { BOOST_WAVE_RET(T_REGISTER); }
  95     "reinterpret_cast" { BOOST_WAVE_RET(T_REINTERPRETCAST); }
  96     "return"        { BOOST_WAVE_RET(T_RETURN); }
  97     "short"         { BOOST_WAVE_RET(T_SHORT); }
  98     "signed"        { BOOST_WAVE_RET(T_SIGNED); }
  99     "sizeof"        { BOOST_WAVE_RET(T_SIZEOF); }
 100     "static"        { BOOST_WAVE_RET(T_STATIC); }
 101     "static_cast"   { BOOST_WAVE_RET(T_STATICCAST); }
 102     "static_assert" { BOOST_WAVE_RET(s->act_in_cpp0x_mode ? T_STATICASSERT : T_IDENTIFIER); }
 103     "struct"        { BOOST_WAVE_RET(T_STRUCT); }
 104     "switch"        { BOOST_WAVE_RET(T_SWITCH); }
 105     "template"      { BOOST_WAVE_RET(T_TEMPLATE); }
 106     "this"          { BOOST_WAVE_RET(T_THIS); }
 107     "thread_local"  { BOOST_WAVE_RET(s->act_in_cpp0x_mode ? T_THREADLOCAL : T_IDENTIFIER); }
 108     "throw"         { BOOST_WAVE_RET(T_THROW); }
 109     "true"          { BOOST_WAVE_RET(T_TRUE); }
 110     "try"           { BOOST_WAVE_RET(T_TRY); }
 111     "typedef"       { BOOST_WAVE_RET(T_TYPEDEF); }
 112     "typeid"        { BOOST_WAVE_RET(T_TYPEID); }
 113     "typename"      { BOOST_WAVE_RET(T_TYPENAME); }
 114     "union"         { BOOST_WAVE_RET(T_UNION); }
 115     "unsigned"      { BOOST_WAVE_RET(T_UNSIGNED); }
 116     "using"         { BOOST_WAVE_RET(T_USING); }
 117     "virtual"       { BOOST_WAVE_RET(T_VIRTUAL); }
 118     "void"          { BOOST_WAVE_RET(T_VOID); }
 119     "volatile"      { BOOST_WAVE_RET(T_VOLATILE); }
 120     "wchar_t"       { BOOST_WAVE_RET(T_WCHART); }
 121     "while"         { BOOST_WAVE_RET(T_WHILE); }
 122
 123     "__int8"        { BOOST_WAVE_RET(s->enable_ms_extensions ? T_MSEXT_INT8 : T_IDENTIFIER); }
 124     "__int16"       { BOOST_WAVE_RET(s->enable_ms_extensions ? T_MSEXT_INT16 : T_IDENTIFIER); }
 125     "__int32"       { BOOST_WAVE_RET(s->enable_ms_extensions ? T_MSEXT_INT32 : T_IDENTIFIER); }
 126     "__int64"       { BOOST_WAVE_RET(s->enable_ms_extensions ? T_MSEXT_INT64 : T_IDENTIFIER); }
 127     "_"? "_based"   { BOOST_WAVE_RET(s->enable_ms_extensions ? T_MSEXT_BASED : T_IDENTIFIER); }
 128     "_"? "_declspec" { BOOST_WAVE_RET(s->enable_ms_extensions ? T_MSEXT_DECLSPEC : T_IDENTIFIER); }
 129     "_"? "_cdecl"   { BOOST_WAVE_RET(s->enable_ms_extensions ? T_MSEXT_CDECL : T_IDENTIFIER); }
 130     "_"? "_fastcall" { BOOST_WAVE_RET(s->enable_ms_extensions ? T_MSEXT_FASTCALL : T_IDENTIFIER); }
 131     "_"? "_stdcall" { BOOST_WAVE_RET(s->enable_ms_extensions ? T_MSEXT_STDCALL : T_IDENTIFIER); }
 132     "__try"         { BOOST_WAVE_RET(s->enable_ms_extensions ? T_MSEXT_TRY : T_IDENTIFIER); }
 133     "__except"      { BOOST_WAVE_RET(s->enable_ms_extensions ? T_MSEXT_EXCEPT : T_IDENTIFIER); }
 134     "__finally"     { BOOST_WAVE_RET(s->enable_ms_extensions ? T_MSEXT_FINALLY : T_IDENTIFIER); }
 135     "__leave"       { BOOST_WAVE_RET(s->enable_ms_extensions ? T_MSEXT_LEAVE : T_IDENTIFIER); }
 136     "_"? "_inline"  { BOOST_WAVE_RET(s->enable_ms_extensions ? T_MSEXT_INLINE : T_IDENTIFIER); }
 137     "_"? "_asm"     { BOOST_WAVE_RET(s->enable_ms_extensions ? T_MSEXT_ASM : T_IDENTIFIER); }
 138
 139     "{"             { BOOST_WAVE_RET(T_LEFTBRACE); }
 140     "??<"           { BOOST_WAVE_RET(T_LEFTBRACE_TRIGRAPH); }
 141     "<%"            { BOOST_WAVE_RET(T_LEFTBRACE_ALT); }
 142     "}"             { BOOST_WAVE_RET(T_RIGHTBRACE); }
 143     "??>"           { BOOST_WAVE_RET(T_RIGHTBRACE_TRIGRAPH); }
 144     "%>"            { BOOST_WAVE_RET(T_RIGHTBRACE_ALT); }
 145     "["             { BOOST_WAVE_RET(T_LEFTBRACKET); }
 146     "??("           { BOOST_WAVE_RET(T_LEFTBRACKET_TRIGRAPH); }
 147     "<:"            { BOOST_WAVE_RET(T_LEFTBRACKET_ALT); }
 148     "]"             { BOOST_WAVE_RET(T_RIGHTBRACKET); }
 149     "??)"           { BOOST_WAVE_RET(T_RIGHTBRACKET_TRIGRAPH); }
 150     ":>"            { BOOST_WAVE_RET(T_RIGHTBRACKET_ALT); }
 151     "#"             { BOOST_WAVE_RET(T_POUND); }
 152     "%:"            { BOOST_WAVE_RET(T_POUND_ALT); }
 153     "??="           { BOOST_WAVE_RET(T_POUND_TRIGRAPH); }
 154     "##"            { BOOST_WAVE_RET(T_POUND_POUND); }
 155     "#??="          { BOOST_WAVE_RET(T_POUND_POUND_TRIGRAPH); }
 156     "??=#"          { BOOST_WAVE_RET(T_POUND_POUND_TRIGRAPH); }
 157     "??=??="        { BOOST_WAVE_RET(T_POUND_POUND_TRIGRAPH); }
 158     "%:%:"          { BOOST_WAVE_RET(T_POUND_POUND_ALT); }
 159     "("             { BOOST_WAVE_RET(T_LEFTPAREN); }
 160     ")"             { BOOST_WAVE_RET(T_RIGHTPAREN); }
 161     ";"             { BOOST_WAVE_RET(T_SEMICOLON); }
 162     ":"             { BOOST_WAVE_RET(T_COLON); }
 163     "..."           { BOOST_WAVE_RET(T_ELLIPSIS); }
 164     "?"             { BOOST_WAVE_RET(T_QUESTION_MARK); }
 165     "::"
 166         {
 167             if (s->act_in_c99_mode) {
 168                 --YYCURSOR;
 169                 BOOST_WAVE_RET(T_COLON);
 170             }
 171             else {
 172                 BOOST_WAVE_RET(T_COLON_COLON);
 173             }
 174         }
 175     "."             { BOOST_WAVE_RET(T_DOT); }
 176     ".*"
 177         {
 178             if (s->act_in_c99_mode) {
 179                 --YYCURSOR;
 180                 BOOST_WAVE_RET(T_DOT);
 181             }
 182             else {
 183                 BOOST_WAVE_RET(T_DOTSTAR);
 184             }
 185         }
 186     "+"             { BOOST_WAVE_RET(T_PLUS); }
 187     "-"             { BOOST_WAVE_RET(T_MINUS); }
 188     "*"             { BOOST_WAVE_RET(T_STAR); }
 189     "/"             { BOOST_WAVE_RET(T_DIVIDE); }
 190     "%"             { BOOST_WAVE_RET(T_PERCENT); }
 191     "^"             { BOOST_WAVE_RET(T_XOR); }
 192     "??'"           { BOOST_WAVE_RET(T_XOR_TRIGRAPH); }
 193     "xor"           { BOOST_WAVE_RET(s->act_in_c99_mode ? T_IDENTIFIER : T_XOR_ALT); }
 194     "&"             { BOOST_WAVE_RET(T_AND); }
 195     "bitand"        { BOOST_WAVE_RET(s->act_in_c99_mode ? T_IDENTIFIER : T_AND_ALT); }
 196     "|"             { BOOST_WAVE_RET(T_OR); }
 197     "bitor"         { BOOST_WAVE_RET(s->act_in_c99_mode ? T_IDENTIFIER : T_OR_ALT); }
 198     "??!"           { BOOST_WAVE_RET(T_OR_TRIGRAPH); }
 199     "~"             { BOOST_WAVE_RET(T_COMPL); }
 200     "??-"           { BOOST_WAVE_RET(T_COMPL_TRIGRAPH); }
 201     "compl"         { BOOST_WAVE_RET(s->act_in_c99_mode ? T_IDENTIFIER : T_COMPL_ALT); }
 202     "!"             { BOOST_WAVE_RET(T_NOT); }
 203     "not"           { BOOST_WAVE_RET(s->act_in_c99_mode ? T_IDENTIFIER : T_NOT_ALT); }
 204     "="             { BOOST_WAVE_RET(T_ASSIGN); }
 205     "<"             { BOOST_WAVE_RET(T_LESS); }
 206     ">"             { BOOST_WAVE_RET(T_GREATER); }
 207     "+="            { BOOST_WAVE_RET(T_PLUSASSIGN); }
 208     "-="            { BOOST_WAVE_RET(T_MINUSASSIGN); }
 209     "*="            { BOOST_WAVE_RET(T_STARASSIGN); }
 210     "/="            { BOOST_WAVE_RET(T_DIVIDEASSIGN); }
 211     "%="            { BOOST_WAVE_RET(T_PERCENTASSIGN); }
 212     "^="            { BOOST_WAVE_RET(T_XORASSIGN); }
 213     "xor_eq"        { BOOST_WAVE_RET(s->act_in_c99_mode ? T_IDENTIFIER : T_XORASSIGN_ALT); }
 214     "??'="          { BOOST_WAVE_RET(T_XORASSIGN_TRIGRAPH); }
 215     "&="            { BOOST_WAVE_RET(T_ANDASSIGN); }
 216     "and_eq"        { BOOST_WAVE_RET(s->act_in_c99_mode ? T_IDENTIFIER : T_ANDASSIGN_ALT); }
 217     "|="            { BOOST_WAVE_RET(T_ORASSIGN); }
 218     "or_eq"         { BOOST_WAVE_RET(s->act_in_c99_mode ? T_IDENTIFIER : T_ORASSIGN_ALT); }
 219     "??!="          { BOOST_WAVE_RET(T_ORASSIGN_TRIGRAPH); }
 220     "<<"            { BOOST_WAVE_RET(T_SHIFTLEFT); }
 221     ">>"            { BOOST_WAVE_RET(T_SHIFTRIGHT); }
 222     ">>="           { BOOST_WAVE_RET(T_SHIFTRIGHTASSIGN); }
 223     "<<="           { BOOST_WAVE_RET(T_SHIFTLEFTASSIGN); }
 224     "=="            { BOOST_WAVE_RET(T_EQUAL); }
 225     "!="            { BOOST_WAVE_RET(T_NOTEQUAL); }
 226     "not_eq"        { BOOST_WAVE_RET(s->act_in_c99_mode ? T_IDENTIFIER : T_NOTEQUAL_ALT); }
 227     "<="            { BOOST_WAVE_RET(T_LESSEQUAL); }
 228     ">="            { BOOST_WAVE_RET(T_GREATEREQUAL); }
 229     "&&"            { BOOST_WAVE_RET(T_ANDAND); }
 230     "and"           { BOOST_WAVE_RET(s->act_in_c99_mode ? T_IDENTIFIER : T_ANDAND_ALT); }
 231     "||"            { BOOST_WAVE_RET(T_OROR); }
 232     "??!|"          { BOOST_WAVE_RET(T_OROR_TRIGRAPH); }
 233     "|??!"          { BOOST_WAVE_RET(T_OROR_TRIGRAPH); }
 234     "or"            { BOOST_WAVE_RET(s->act_in_c99_mode ? T_IDENTIFIER : T_OROR_ALT); }
 235     "??!??!"        { BOOST_WAVE_RET(T_OROR_TRIGRAPH); }
 236     "++"            { BOOST_WAVE_RET(T_PLUSPLUS); }
 237     "--"            { BOOST_WAVE_RET(T_MINUSMINUS); }
 238     ","             { BOOST_WAVE_RET(T_COMMA); }
 239     "->*"
 240         {
 241             if (s->act_in_c99_mode) {
 242                 --YYCURSOR;
 243                 BOOST_WAVE_RET(T_ARROW);
 244             }
 245             else {
 246                 BOOST_WAVE_RET(T_ARROWSTAR);
 247             }
 248         }
 249     "->"            { BOOST_WAVE_RET(T_ARROW); }
 250     "??/"           { BOOST_WAVE_RET(T_ANY_TRIGRAPH); }
 251
 252     "L"? (['] (EscapeSequence | UniversalChar | any\[\n\r\\'])+ ['])
 253         { BOOST_WAVE_RET(T_CHARLIT); }
 254
 255     "L"? (["] (EscapeSequence | UniversalChar | any\[\n\r\\"])* ["])
 256         { BOOST_WAVE_RET(T_STRINGLIT); }
 257
 258     "L"? "R" ["]
 259         {
 260             if (s->act_in_cpp0x_mode)
 261                 goto extrawstringlit;
 262             --YYCURSOR;
 263             BOOST_WAVE_RET(T_IDENTIFIER);
 264         }
 265
 266     [uU] [']
 267         {
 268             if (s->act_in_cpp0x_mode)
 269                 goto extcharlit;
 270             --YYCURSOR;
 271             BOOST_WAVE_RET(T_IDENTIFIER);
 272         }
 273
 274     ([uU] | "u8") ["]
 275         {
 276             if (s->act_in_cpp0x_mode)
 277                 goto extstringlit;
 278             --YYCURSOR;
 279             BOOST_WAVE_RET(T_IDENTIFIER);
 280         }
 281
 282     ([uU] | "u8") "R" ["]
 283         {
 284             if (s->act_in_cpp0x_mode)
 285                 goto extrawstringlit;
 286             --YYCURSOR;
 287             BOOST_WAVE_RET(T_IDENTIFIER);
 288         }
 289
 290     ([a-zA-Z_$] | UniversalChar) ([a-zA-Z_0-9$] | UniversalChar)*
 291         { BOOST_WAVE_RET(T_IDENTIFIER); }
 292
 293     Pound PPSpace ( "include" | "include_next") PPSpace "<" (any\[\n\r>])+ ">"
 294         { BOOST_WAVE_RET(T_PP_HHEADER); }
 295
 296     Pound PPSpace ( "include" | "include_next") PPSpace "\"" (any\[\n\r"])+ "\""
 297         { BOOST_WAVE_RET(T_PP_QHEADER); }
 298
 299     Pound PPSpace ( "include" | "include_next") PPSpace
 300         { BOOST_WAVE_RET(T_PP_INCLUDE); }
 301
 302     Pound PPSpace "if"        { BOOST_WAVE_RET(T_PP_IF); }
 303     Pound PPSpace "ifdef"     { BOOST_WAVE_RET(T_PP_IFDEF); }
 304     Pound PPSpace "ifndef"    { BOOST_WAVE_RET(T_PP_IFNDEF); }
 305     Pound PPSpace "else"      { BOOST_WAVE_RET(T_PP_ELSE); }
 306     Pound PPSpace "elif"      { BOOST_WAVE_RET(T_PP_ELIF); }
 307     Pound PPSpace "endif"     { BOOST_WAVE_RET(T_PP_ENDIF); }
 308     Pound PPSpace "define"    { BOOST_WAVE_RET(T_PP_DEFINE); }
 309     Pound PPSpace "undef"     { BOOST_WAVE_RET(T_PP_UNDEF); }
 310     Pound PPSpace "line"      { BOOST_WAVE_RET(T_PP_LINE); }
 311     Pound PPSpace "error"     { BOOST_WAVE_RET(T_PP_ERROR); }
 312     Pound PPSpace "pragma"    { BOOST_WAVE_RET(T_PP_PRAGMA); }
 313
 314     Pound PPSpace "warning"   { BOOST_WAVE_RET(T_PP_WARNING); }
 315
 316     Pound PPSpace "region"    { BOOST_WAVE_RET(T_MSEXT_PP_REGION); }
 317     Pound PPSpace "endregion" { BOOST_WAVE_RET(T_MSEXT_PP_ENDREGION); }
 318
 319     [ \t\v\f]+
 320         { BOOST_WAVE_RET(T_SPACE); }
 321
 322     Newline
 323     {
 324         s->line++;
 325         cursor.column = 1;
 326         BOOST_WAVE_RET(T_NEWLINE);
 327     }
 328
 329     "\000"
 330     {
 331         if (s->eof && cursor != s->eof)
 332         {
 333             BOOST_WAVE_UPDATE_CURSOR();     // adjust the input cursor
 334             (*s->error_proc)(s, lexing_exception::generic_lexing_error,
 335                 "invalid character '\\000' in input stream");
 336         }
 337         BOOST_WAVE_RET(T_EOF);
 338     }
 339
 340     any        { BOOST_WAVE_RET(TOKEN_FROM_ID(*s->tok, UnknownTokenType)); }
 341
 342     anyctrl
 343     {
 344         // flag the error
 345         BOOST_WAVE_UPDATE_CURSOR();     // adjust the input cursor
 346         (*s->error_proc)(s, lexing_exception::generic_lexing_error,
 347             "invalid character '\\%03o' in input stream", *--YYCURSOR);
 348     }
 349 */
 350
 351 ccomment:
 352 /*!re2c
 353     "*/"            { BOOST_WAVE_RET(T_CCOMMENT); }
 354
 355     Newline
 356     {
 357         /*if(cursor == s->eof) BOOST_WAVE_RET(T_EOF);*/
 358         /*s->tok = cursor; */
 359         s->line += count_backslash_newlines(s, cursor) +1;
 360         cursor.column = 1;
 361         goto ccomment;
 362     }
 363
 364     any            { goto ccomment; }
 365
 366     "\000"
 367     {
 368         if(cursor == s->eof)
 369         {
 370             BOOST_WAVE_UPDATE_CURSOR();   // adjust the input cursor
 371             (*s->error_proc)(s, lexing_exception::generic_lexing_warning,
 372                 "Unterminated 'C' style comment");
 373         }
 374         else
 375         {
 376             --YYCURSOR;                   // next call returns T_EOF
 377             BOOST_WAVE_UPDATE_CURSOR();   // adjust the input cursor
 378             (*s->error_proc)(s, lexing_exception::generic_lexing_error,
 379                 "invalid character: '\\000' in input stream");
 380         }
 381     }
 382
 383     anyctrl
 384     {
 385         // flag the error
 386         BOOST_WAVE_UPDATE_CURSOR();     // adjust the input cursor
 387         (*s->error_proc)(s, lexing_exception::generic_lexing_error,
 388             "invalid character '\\%03o' in input stream", *--YYCURSOR);
 389     }
 390 */
 391
 392 cppcomment:
 393 /*!re2c
 394     Newline
 395     {
 396         /*if(cursor == s->eof) BOOST_WAVE_RET(T_EOF); */
 397         /*s->tok = cursor; */
 398         s->line++;
 399         cursor.column = 1;
 400         BOOST_WAVE_RET(T_CPPCOMMENT);
 401     }
 402
 403     any            { goto cppcomment; }
 404
 405     "\000"
 406     {
 407         if (s->eof && cursor != s->eof)
 408         {
 409             --YYCURSOR;                     // next call returns T_EOF
 410             BOOST_WAVE_UPDATE_CURSOR();     // adjust the input cursor
 411             (*s->error_proc)(s, lexing_exception::generic_lexing_error,
 412                 "invalid character '\\000' in input stream");
 413         }
 414
 415         --YYCURSOR;                         // next call returns T_EOF
 416         if (!s->single_line_only)
 417         {
 418             BOOST_WAVE_UPDATE_CURSOR();     // adjust the input cursor
 419             (*s->error_proc)(s, lexing_exception::generic_lexing_warning,
 420                 "Unterminated 'C++' style comment");
 421         }
 422         BOOST_WAVE_RET(T_CPPCOMMENT);
 423     }
 424
 425     anyctrl
 426     {
 427         // flag the error
 428         BOOST_WAVE_UPDATE_CURSOR();     // adjust the input cursor
 429         (*s->error_proc)(s, lexing_exception::generic_lexing_error,
 430             "invalid character '\\%03o' in input stream", *--YYCURSOR);
 431     }
 432 */
 433
 434 /* this subscanner is called whenever a pp_number has been started */
 435 pp_number:
 436 {
 437     cursor = uchar_wrapper(s->tok = s->cur, s->column = s->curr_column);
 438     marker = uchar_wrapper(s->ptr);
 439     limit = uchar_wrapper(s->lim);
 440
 441     if (s->detect_pp_numbers) {
 442     /*!re2c
 443         "."? Digit (Digit | NonDigit | ExponentStart | ".")*
 444             { BOOST_WAVE_RET(T_PP_NUMBER); }
 445     */
 446     }
 447     else {
 448     /*!re2c
 449         ((FractionalConstant ExponentPart?) | (Digit+ ExponentPart)) FloatingSuffix?
 450             { BOOST_WAVE_RET(T_FLOATLIT); }
 451
 452         Integer { goto integer_suffix; }
 453     */
 454     }
 455 }
 456
 457 /* this subscanner is called, whenever an Integer was recognized */
 458 integer_suffix:
 459 {
 460     if (s->enable_ms_extensions) {
 461     /*!re2c
 462         LongIntegerSuffix | MSLongIntegerSuffix
 463             { BOOST_WAVE_RET(T_LONGINTLIT); }
 464
 465         IntegerSuffix?
 466             { BOOST_WAVE_RET(T_INTLIT); }
 467     */
 468     }
 469     else {
 470     /*!re2c
 471         LongIntegerSuffix
 472             { BOOST_WAVE_RET(T_LONGINTLIT); }
 473
 474         IntegerSuffix?
 475             { BOOST_WAVE_RET(T_INTLIT); }
 476     */
 477     }
 478 }
 479
 480 /* this subscanner is invoked for C++0x extended character literals */
 481 extcharlit:
 482 {
 483     /*!re2c
 484         ((EscapeSequence | UniversalChar | any\[\n\r\\']) ['])
 485             { BOOST_WAVE_RET(T_CHARLIT); }
 486
 487         any
 488             { BOOST_WAVE_RET(TOKEN_FROM_ID(*s->tok, UnknownTokenType)); }
 489     */
 490 }
 491
 492 /* this subscanner is invoked for C++0x extended character string literals */
 493 extstringlit:
 494 {
 495     /*!re2c
 496         ((EscapeSequence | UniversalChar | any\[\n\r\\"])* ["])
 497             { BOOST_WAVE_RET(T_STRINGLIT); }
 498
 499         any
 500             { BOOST_WAVE_RET(TOKEN_FROM_ID(*s->tok, UnknownTokenType)); }
 501     */
 502 }
 503
 504 extrawstringlit:
 505 {
 506     /*!re2c
 507         (EscapeSequence | UniversalChar | any\[\r\n\\"])
 508         {
 509             goto extrawstringlit;
 510         }
 511
 512         Newline
 513         {
 514             s->line += count_backslash_newlines(s, cursor) +1;
 515             cursor.column = 1;
 516             goto extrawstringlit;
 517         }
 518
 519         ["] { BOOST_WAVE_RET(T_RAWSTRINGLIT); }
 520     */
 521 }