Mercurial > projects > ddmd
annotate dmd/Lexer.d @ 73:ef02e2e203c2
Updating to dmd2.033
| author | korDen |
|---|---|
| date | Sat, 28 Aug 2010 19:42:41 +0400 |
| parents | b7d29f613539 |
| children | 43073c7c7769 |
| rev | line source |
|---|---|
| 0 | 1 module dmd.Lexer; |
| 2 | |
| 3 import dmd.StringTable; | |
| 4 import dmd.OutBuffer; | |
| 5 import dmd.Token; | |
| 6 import dmd.Loc; | |
| 7 import dmd.Module; | |
| 8 import dmd.Identifier; | |
| 9 import dmd.TOK; | |
| 10 import dmd.Keyword; | |
| 11 import dmd.StringValue; | |
| 12 import dmd.Global; | |
| 13 import dmd.Util; | |
| 14 import dmd.Id; | |
| 15 import dmd.Dchar; | |
| 16 import dmd.Utf; | |
| 17 | |
| 18 import std.stdio : writeln; | |
| 19 | |
| 4 | 20 import core.memory; |
| 2 | 21 |
| 0 | 22 import core.stdc.ctype; |
| 23 import core.stdc.stdlib; | |
| 24 import core.stdc.string; | |
| 25 import core.stdc.stdio; | |
| 26 import core.stdc.time; | |
| 27 import core.stdc.errno; | |
| 28 | |
| 29 enum LS = 0x2028; // UTF line separator | |
| 30 enum PS = 0x2029; // UTF paragraph separator | |
| 31 | |
| 32 extern (C) extern | |
| 33 { | |
| 34 __gshared char* __locale_decpoint; | |
| 35 } | |
| 36 | |
| 37 int isUniAlpha(uint u) | |
| 38 { | |
| 39 assert(false); | |
| 40 } | |
| 41 | |
| 42 class Lexer | |
| 43 { | |
| 44 static StringTable stringtable; | |
| 45 static OutBuffer stringbuffer; | |
| 46 static Token* freelist; | |
| 47 | |
| 48 Loc loc; // for error messages | |
| 49 | |
| 50 ubyte* base; // pointer to start of buffer | |
| 51 ubyte* end; // past end of buffer | |
| 52 ubyte* p; // current character | |
| 53 Token token; | |
| 54 Module mod; | |
| 55 int doDocComment; // collect doc comment information | |
| 56 int anyToken; // !=0 means seen at least one token | |
| 57 int commentToken; // !=0 means comments are TOKcomment's | |
| 58 | |
| 59 static this() | |
| 60 { | |
| 61 stringtable = new StringTable(); | |
| 62 stringbuffer = new OutBuffer(); | |
| 63 } | |
| 64 | |
| 65 static ~this() | |
| 66 { | |
| 34 | 67 //delete stringtable; |
| 0 | 68 } |
| 69 | |
| 70 this(Module mod, ubyte* base, uint begoffset, uint endoffset, int doDocComment, int commentToken) | |
| 71 { | |
| 72 loc = Loc(mod, 1); | |
| 73 | |
| 74 memset(&token,0,token.sizeof); | |
| 75 this.base = base; | |
| 76 this.end = base + endoffset; | |
| 77 p = base + begoffset; | |
| 78 this.mod = mod; | |
| 79 this.doDocComment = doDocComment; | |
| 80 this.anyToken = 0; | |
| 81 this.commentToken = commentToken; | |
| 82 //initKeywords(); | |
| 83 | |
| 84 /* If first line starts with '#!', ignore the line | |
| 85 */ | |
| 86 | |
| 87 if (p[0] == '#' && p[1] =='!') | |
| 88 { | |
| 89 p += 2; | |
| 90 while (1) | |
| 91 { | |
| 92 ubyte c = *p; | |
| 93 switch (c) | |
| 94 { | |
| 95 case '\n': | |
| 96 p++; | |
| 97 break; | |
| 98 | |
| 99 case '\r': | |
| 100 p++; | |
| 101 if (*p == '\n') | |
| 102 p++; | |
| 103 break; | |
| 104 | |
| 105 case 0: | |
| 106 case 0x1A: | |
| 107 break; | |
| 108 | |
| 109 default: | |
| 110 if (c & 0x80) | |
| 111 { | |
| 112 uint u = decodeUTF(); | |
| 113 if (u == PS || u == LS) | |
| 114 break; | |
| 115 } | |
| 116 p++; | |
| 117 continue; | |
| 118 } | |
| 119 break; | |
| 120 } | |
| 121 loc.linnum = 2; | |
| 122 } | |
| 123 } | |
| 124 | |
| 125 version (DMDV2) { | |
| 126 static Keyword[] keywords = | |
| 127 [ | |
| 128 // { "", TOK }, | |
| 129 | |
| 130 { "this", TOK.TOKthis }, | |
| 131 { "super", TOK.TOKsuper }, | |
| 132 { "assert", TOK.TOKassert }, | |
| 133 { "null", TOK.TOKnull }, | |
| 134 { "true", TOK.TOKtrue }, | |
| 135 { "false", TOK.TOKfalse }, | |
| 136 { "cast", TOK.TOKcast }, | |
| 137 { "new", TOK.TOKnew }, | |
| 138 { "delete", TOK.TOKdelete }, | |
| 139 { "throw", TOK.TOKthrow }, | |
| 140 { "module", TOK.TOKmodule }, | |
| 141 { "pragma", TOK.TOKpragma }, | |
| 142 { "typeof", TOK.TOKtypeof }, | |
| 143 { "typeid", TOK.TOKtypeid }, | |
| 144 | |
| 145 { "template", TOK.TOKtemplate }, | |
| 146 | |
| 147 { "void", TOK.TOKvoid }, | |
| 148 { "byte", TOK.TOKint8 }, | |
| 149 { "ubyte", TOK.TOKuns8 }, | |
| 150 { "short", TOK.TOKint16 }, | |
| 151 { "ushort", TOK.TOKuns16 }, | |
| 152 { "int", TOK.TOKint32 }, | |
| 153 { "uint", TOK.TOKuns32 }, | |
| 154 { "long", TOK.TOKint64 }, | |
| 155 { "ulong", TOK.TOKuns64 }, | |
| 156 { "cent", TOK.TOKcent, }, | |
| 157 { "ucent", TOK.TOKucent, }, | |
| 158 { "float", TOK.TOKfloat32 }, | |
| 159 { "double", TOK.TOKfloat64 }, | |
| 160 { "real", TOK.TOKfloat80 }, | |
| 161 | |
| 162 { "bool", TOK.TOKbool }, | |
| 163 { "char", TOK.TOKchar }, | |
| 164 { "wchar", TOK.TOKwchar }, | |
| 165 { "dchar", TOK.TOKdchar }, | |
| 166 | |
| 167 { "ifloat", TOK.TOKimaginary32 }, | |
| 168 { "idouble", TOK.TOKimaginary64 }, | |
| 169 { "ireal", TOK.TOKimaginary80 }, | |
| 170 | |
| 171 { "cfloat", TOK.TOKcomplex32 }, | |
| 172 { "cdouble", TOK.TOKcomplex64 }, | |
| 173 { "creal", TOK.TOKcomplex80 }, | |
| 174 | |
| 175 { "delegate", TOK.TOKdelegate }, | |
| 176 { "function", TOK.TOKfunction }, | |
| 177 | |
| 178 { "is", TOK.TOKis }, | |
| 179 { "if", TOK.TOKif }, | |
| 180 { "else", TOK.TOKelse }, | |
| 181 { "while", TOK.TOKwhile }, | |
| 182 { "for", TOK.TOKfor }, | |
| 183 { "do", TOK.TOKdo }, | |
| 184 { "switch", TOK.TOKswitch }, | |
| 185 { "case", TOK.TOKcase }, | |
| 186 { "default", TOK.TOKdefault }, | |
| 187 { "break", TOK.TOKbreak }, | |
| 188 { "continue", TOK.TOKcontinue }, | |
| 189 { "synchronized", TOK.TOKsynchronized }, | |
| 190 { "return", TOK.TOKreturn }, | |
| 191 { "goto", TOK.TOKgoto }, | |
| 192 { "try", TOK.TOKtry }, | |
| 193 { "catch", TOK.TOKcatch }, | |
| 194 { "finally", TOK.TOKfinally }, | |
| 195 { "with", TOK.TOKwith }, | |
| 196 { "asm", TOK.TOKasm }, | |
| 197 { "foreach", TOK.TOKforeach }, | |
| 198 { "foreach_reverse", TOK.TOKforeach_reverse }, | |
| 199 { "scope", TOK.TOKscope }, | |
| 200 | |
| 201 { "struct", TOK.TOKstruct }, | |
| 202 { "class", TOK.TOKclass }, | |
| 203 { "interface", TOK.TOKinterface }, | |
| 204 { "union", TOK.TOKunion }, | |
| 205 { "enum", TOK.TOKenum }, | |
| 206 { "import", TOK.TOKimport }, | |
| 207 { "mixin", TOK.TOKmixin }, | |
| 208 { "static", TOK.TOKstatic }, | |
| 209 { "final", TOK.TOKfinal }, | |
| 210 { "const", TOK.TOKconst }, | |
| 211 { "typedef", TOK.TOKtypedef }, | |
| 212 { "alias", TOK.TOKalias }, | |
| 213 { "override", TOK.TOKoverride }, | |
| 214 { "abstract", TOK.TOKabstract }, | |
| 215 { "volatile", TOK.TOKvolatile }, | |
| 216 { "debug", TOK.TOKdebug }, | |
| 217 { "deprecated", TOK.TOKdeprecated }, | |
| 218 { "in", TOK.TOKin }, | |
| 219 { "out", TOK.TOKout }, | |
| 220 { "inout", TOK.TOKinout }, | |
| 221 { "lazy", TOK.TOKlazy }, | |
| 222 { "auto", TOK.TOKauto }, | |
| 223 | |
| 224 { "align", TOK.TOKalign }, | |
| 225 { "extern", TOK.TOKextern }, | |
| 226 { "private", TOK.TOKprivate }, | |
| 227 { "package", TOK.TOKpackage }, | |
| 228 { "protected", TOK.TOKprotected }, | |
| 229 { "public", TOK.TOKpublic }, | |
| 230 { "export", TOK.TOKexport }, | |
| 231 | |
| 232 { "body", TOK.TOKbody }, | |
| 233 { "invariant", TOK.TOKinvariant }, | |
| 234 { "unittest", TOK.TOKunittest }, | |
| 235 { "version", TOK.TOKversion }, | |
| 236 //{ "manifest", TOK.TOKmanifest }, | |
| 237 | |
| 238 // Added after 1.0 | |
| 239 { "ref", TOK.TOKref }, | |
| 240 { "macro", TOK.TOKmacro }, | |
| 241 { "pure", TOK.TOKpure }, | |
| 242 { "nothrow", TOK.TOKnothrow }, | |
| 243 { "__thread", TOK.TOKtls }, | |
| 244 { "__gshared", TOK.TOKgshared }, | |
| 245 { "__traits", TOK.TOKtraits }, | |
| 246 { "__overloadset", TOK.TOKoverloadset }, | |
| 247 { "__FILE__", TOK.TOKfile }, | |
| 248 { "__LINE__", TOK.TOKline }, | |
| 249 { "shared", TOK.TOKshared }, | |
| 250 { "immutable", TOK.TOKimmutable }, | |
| 251 ]; | |
| 252 } else { | |
| 253 static Keyword[] keywords = | |
| 254 [ | |
| 255 // { "", TOK }, | |
| 256 | |
| 257 { "this", TOK.TOKthis }, | |
| 258 { "super", TOK.TOKsuper }, | |
| 259 { "assert", TOK.TOKassert }, | |
| 260 { "null", TOK.TOKnull }, | |
| 261 { "true", TOK.TOKtrue }, | |
| 262 { "false", TOK.TOKfalse }, | |
| 263 { "cast", TOK.TOKcast }, | |
| 264 { "new", TOK.TOKnew }, | |
| 265 { "delete", TOK.TOKdelete }, | |
| 266 { "throw", TOK.TOKthrow }, | |
| 267 { "module", TOK.TOKmodule }, | |
| 268 { "pragma", TOK.TOKpragma }, | |
| 269 { "typeof", TOK.TOKtypeof }, | |
| 270 { "typeid", TOK.TOKtypeid }, | |
| 271 | |
| 272 { "template", TOK.TOKtemplate }, | |
| 273 | |
| 274 { "void", TOK.TOKvoid }, | |
| 275 { "byte", TOK.TOKint8 }, | |
| 276 { "ubyte", TOK.TOKuns8 }, | |
| 277 { "short", TOK.TOKint16 }, | |
| 278 { "ushort", TOK.TOKuns16 }, | |
| 279 { "int", TOK.TOKint32 }, | |
| 280 { "uint", TOK.TOKuns32 }, | |
| 281 { "long", TOK.TOKint64 }, | |
| 282 { "ulong", TOK.TOKuns64 }, | |
| 283 { "cent", TOK.TOKcent, }, | |
| 284 { "ucent", TOK.TOKucent, }, | |
| 285 { "float", TOK.TOKfloat32 }, | |
| 286 { "double", TOK.TOKfloat64 }, | |
| 287 { "real", TOK.TOKfloat80 }, | |
| 288 | |
| 289 { "bool", TOK.TOKbool }, | |
| 290 { "char", TOK.TOKchar }, | |
| 291 { "wchar", TOK.TOKwchar }, | |
| 292 { "dchar", TOK.TOKdchar }, | |
| 293 | |
| 294 { "ifloat", TOK.TOKimaginary32 }, | |
| 295 { "idouble", TOK.TOKimaginary64 }, | |
| 296 { "ireal", TOK.TOKimaginary80 }, | |
| 297 | |
| 298 { "cfloat", TOK.TOKcomplex32 }, | |
| 299 { "cdouble", TOK.TOKcomplex64 }, | |
| 300 { "creal", TOK.TOKcomplex80 }, | |
| 301 | |
| 302 { "delegate", TOK.TOKdelegate }, | |
| 303 { "function", TOK.TOKfunction }, | |
| 304 | |
| 305 { "is", TOK.TOKis }, | |
| 306 { "if", TOK.TOKif }, | |
| 307 { "else", TOK.TOKelse }, | |
| 308 { "while", TOK.TOKwhile }, | |
| 309 { "for", TOK.TOKfor }, | |
| 310 { "do", TOK.TOKdo }, | |
| 311 { "switch", TOK.TOKswitch }, | |
| 312 { "case", TOK.TOKcase }, | |
| 313 { "default", TOK.TOKdefault }, | |
| 314 { "break", TOK.TOKbreak }, | |
| 315 { "continue", TOK.TOKcontinue }, | |
| 316 { "synchronized", TOK.TOKsynchronized }, | |
| 317 { "return", TOK.TOKreturn }, | |
| 318 { "goto", TOK.TOKgoto }, | |
| 319 { "try", TOK.TOKtry }, | |
| 320 { "catch", TOK.TOKcatch }, | |
| 321 { "finally", TOK.TOKfinally }, | |
| 322 { "with", TOK.TOKwith }, | |
| 323 { "asm", TOK.TOKasm }, | |
| 324 { "foreach", TOK.TOKforeach }, | |
| 325 { "foreach_reverse", TOK.TOKforeach_reverse }, | |
| 326 { "scope", TOK.TOKscope }, | |
| 327 | |
| 328 { "struct", TOK.TOKstruct }, | |
| 329 { "class", TOK.TOKclass }, | |
| 330 { "interface", TOK.TOKinterface }, | |
| 331 { "union", TOK.TOKunion }, | |
| 332 { "enum", TOK.TOKenum }, | |
| 333 { "import", TOK.TOKimport }, | |
| 334 { "mixin", TOK.TOKmixin }, | |
| 335 { "static", TOK.TOKstatic }, | |
| 336 { "final", TOK.TOKfinal }, | |
| 337 { "const", TOK.TOKconst }, | |
| 338 { "typedef", TOK.TOKtypedef }, | |
| 339 { "alias", TOK.TOKalias }, | |
| 340 { "override", TOK.TOKoverride }, | |
| 341 { "abstract", TOK.TOKabstract }, | |
| 342 { "volatile", TOK.TOKvolatile }, | |
| 343 { "debug", TOK.TOKdebug }, | |
| 344 { "deprecated", TOK.TOKdeprecated }, | |
| 345 { "in", TOK.TOKin }, | |
| 346 { "out", TOK.TOKout }, | |
| 347 { "inout", TOK.TOKinout }, | |
| 348 { "lazy", TOK.TOKlazy }, | |
| 349 { "auto", TOK.TOKauto }, | |
| 350 | |
| 351 { "align", TOK.TOKalign }, | |
| 352 { "extern", TOK.TOKextern }, | |
| 353 { "private", TOK.TOKprivate }, | |
| 354 { "package", TOK.TOKpackage }, | |
| 355 { "protected", TOK.TOKprotected }, | |
| 356 { "public", TOK.TOKpublic }, | |
| 357 { "export", TOK.TOKexport }, | |
| 358 | |
| 359 { "body", TOK.TOKbody }, | |
| 360 { "invariant", TOK.TOKinvariant }, | |
| 361 { "unittest", TOK.TOKunittest }, | |
| 362 { "version", TOK.TOKversion }, | |
| 363 //{ "manifest", TOK.TOKmanifest }, | |
| 364 | |
| 365 // Added after 1.0 | |
| 366 { "ref", TOK.TOKref }, | |
| 367 { "macro", TOK.TOKmacro }, | |
| 368 ]; | |
| 369 } | |
| 370 | |
| 371 static ubyte cmtable[256]; | |
| 372 enum CMoctal = 0x1; | |
| 373 enum CMhex = 0x2; | |
| 374 enum CMidchar = 0x4; | |
| 375 | |
| 376 ubyte isoctal (ubyte c) { return cmtable[c] & CMoctal; } | |
| 377 ubyte ishex (ubyte c) { return cmtable[c] & CMhex; } | |
| 378 ubyte isidchar(ubyte c) { return cmtable[c] & CMidchar; } | |
| 379 | |
| 380 static void cmtable_init() | |
| 381 { | |
| 382 for (uint c = 0; c < cmtable.length; c++) | |
| 383 { | |
| 384 if ('0' <= c && c <= '7') | |
| 385 cmtable[c] |= CMoctal; | |
| 386 if (isdigit(c) || ('a' <= c && c <= 'f') || ('A' <= c && c <= 'F')) | |
| 387 cmtable[c] |= CMhex; | |
| 388 if (isalnum(c) || c == '_') | |
| 389 cmtable[c] |= CMidchar; | |
| 390 } | |
| 391 } | |
| 392 | |
| 393 static void initKeywords() | |
| 394 { | |
| 395 uint nkeywords = keywords.length; | |
| 396 | |
| 397 if (global.params.Dversion == 1) | |
| 398 nkeywords -= 2; | |
| 399 | |
| 400 cmtable_init(); | |
| 401 | |
| 402 for (uint u = 0; u < nkeywords; u++) | |
| 403 { | |
| 34 | 404 //printf("keyword[%d] = '%.*s'\n",u, keywords[u].name); |
| 0 | 405 string s = keywords[u].name; |
| 406 TOK v = keywords[u].value; | |
| 407 StringValue* sv = stringtable.insert(s); | |
| 408 sv.ptrvalue = cast(void*) new Identifier(sv.lstring.string_, v); | |
| 409 | |
| 410 //printf("tochars[%d] = '%s'\n",v, s); | |
| 411 Token.tochars[v] = s; | |
| 412 } | |
| 413 | |
| 414 Token.tochars[TOK.TOKeof] = "EOF"; | |
| 415 Token.tochars[TOK.TOKlcurly] = "{"; | |
| 416 Token.tochars[TOK.TOKrcurly] = "}"; | |
| 417 Token.tochars[TOK.TOKlparen] = "("; | |
| 418 Token.tochars[TOK.TOKrparen] = ")"; | |
| 419 Token.tochars[TOK.TOKlbracket] = "["; | |
| 420 Token.tochars[TOK.TOKrbracket] = "]"; | |
| 421 Token.tochars[TOK.TOKsemicolon] = ";"; | |
| 422 Token.tochars[TOK.TOKcolon] = ":"; | |
| 423 Token.tochars[TOK.TOKcomma] = ","; | |
| 424 Token.tochars[TOK.TOKdot] = "."; | |
| 425 Token.tochars[TOK.TOKxor] = "^"; | |
| 426 Token.tochars[TOK.TOKxorass] = "^="; | |
| 427 Token.tochars[TOK.TOKassign] = "="; | |
| 428 Token.tochars[TOK.TOKconstruct] = "="; | |
| 429 version (DMDV2) { | |
| 430 Token.tochars[TOK.TOKblit] = "="; | |
| 431 } | |
| 432 Token.tochars[TOK.TOKlt] = "<"; | |
| 433 Token.tochars[TOK.TOKgt] = ">"; | |
| 434 Token.tochars[TOK.TOKle] = "<="; | |
| 435 Token.tochars[TOK.TOKge] = ">="; | |
| 436 Token.tochars[TOK.TOKequal] = "=="; | |
| 437 Token.tochars[TOK.TOKnotequal] = "!="; | |
| 438 Token.tochars[TOK.TOKnotidentity] = "!is"; | |
| 439 Token.tochars[TOK.TOKtobool] = "!!"; | |
| 440 | |
| 441 Token.tochars[TOK.TOKunord] = "!<>="; | |
| 442 Token.tochars[TOK.TOKue] = "!<>"; | |
| 443 Token.tochars[TOK.TOKlg] = "<>"; | |
| 444 Token.tochars[TOK.TOKleg] = "<>="; | |
| 445 Token.tochars[TOK.TOKule] = "!>"; | |
| 446 Token.tochars[TOK.TOKul] = "!>="; | |
| 447 Token.tochars[TOK.TOKuge] = "!<"; | |
| 448 Token.tochars[TOK.TOKug] = "!<="; | |
| 449 | |
| 450 Token.tochars[TOK.TOKnot] = "!"; | |
| 451 Token.tochars[TOK.TOKtobool] = "!!"; | |
| 452 Token.tochars[TOK.TOKshl] = "<<"; | |
| 453 Token.tochars[TOK.TOKshr] = ">>"; | |
| 454 Token.tochars[TOK.TOKushr] = ">>>"; | |
| 455 Token.tochars[TOK.TOKadd] = "+"; | |
| 456 Token.tochars[TOK.TOKmin] = "-"; | |
| 457 Token.tochars[TOK.TOKmul] = "*"; | |
| 458 Token.tochars[TOK.TOKdiv] = "/"; | |
| 459 Token.tochars[TOK.TOKmod] = "%"; | |
| 460 Token.tochars[TOK.TOKslice] = ".."; | |
| 461 Token.tochars[TOK.TOKdotdotdot] = "..."; | |
| 462 Token.tochars[TOK.TOKand] = "&"; | |
| 463 Token.tochars[TOK.TOKandand] = "&&"; | |
| 464 Token.tochars[TOK.TOKor] = "|"; | |
| 465 Token.tochars[TOK.TOKoror] = "||"; | |
| 466 Token.tochars[TOK.TOKarray] = "[]"; | |
| 467 Token.tochars[TOK.TOKindex] = "[i]"; | |
| 468 Token.tochars[TOK.TOKaddress] = "&"; | |
| 469 Token.tochars[TOK.TOKstar] = "*"; | |
| 470 Token.tochars[TOK.TOKtilde] = "~"; | |
| 471 Token.tochars[TOK.TOKdollar] = "$"; | |
| 472 Token.tochars[TOK.TOKcast] = "cast"; | |
| 473 Token.tochars[TOK.TOKplusplus] = "++"; | |
| 474 Token.tochars[TOK.TOKminusminus] = "--"; | |
| 475 Token.tochars[TOK.TOKtype] = "type"; | |
| 476 Token.tochars[TOK.TOKquestion] = "?"; | |
| 477 Token.tochars[TOK.TOKneg] = "-"; | |
| 478 Token.tochars[TOK.TOKuadd] = "+"; | |
| 479 Token.tochars[TOK.TOKvar] = "var"; | |
| 480 Token.tochars[TOK.TOKaddass] = "+="; | |
| 481 Token.tochars[TOK.TOKminass] = "-="; | |
| 482 Token.tochars[TOK.TOKmulass] = "*="; | |
| 483 Token.tochars[TOK.TOKdivass] = "/="; | |
| 484 Token.tochars[TOK.TOKmodass] = "%="; | |
| 485 Token.tochars[TOK.TOKshlass] = "<<="; | |
| 486 Token.tochars[TOK.TOKshrass] = ">>="; | |
| 487 Token.tochars[TOK.TOKushrass] = ">>>="; | |
| 488 Token.tochars[TOK.TOKandass] = "&="; | |
| 489 Token.tochars[TOK.TOKorass] = "|="; | |
| 490 Token.tochars[TOK.TOKcatass] = "~="; | |
| 491 Token.tochars[TOK.TOKcat] = "~"; | |
| 492 Token.tochars[TOK.TOKcall] = "call"; | |
| 493 Token.tochars[TOK.TOKidentity] = "is"; | |
| 494 Token.tochars[TOK.TOKnotidentity] = "!is"; | |
| 495 | |
| 496 Token.tochars[TOK.TOKorass] = "|="; | |
| 497 Token.tochars[TOK.TOKidentifier] = "identifier"; | |
| 498 Token.tochars[TOK.TOKat] = "@"; | |
| 499 | |
| 500 // For debugging | |
| 73 | 501 Token.tochars[TOKerror] = "error"; |
| 0 | 502 Token.tochars[TOK.TOKdotexp] = "dotexp"; |
| 503 Token.tochars[TOK.TOKdotti] = "dotti"; | |
| 504 Token.tochars[TOK.TOKdotvar] = "dotvar"; | |
| 505 Token.tochars[TOK.TOKdottype] = "dottype"; | |
| 506 Token.tochars[TOK.TOKsymoff] = "symoff"; | |
| 507 Token.tochars[TOK.TOKarraylength] = "arraylength"; | |
| 508 Token.tochars[TOK.TOKarrayliteral] = "arrayliteral"; | |
| 509 Token.tochars[TOK.TOKassocarrayliteral] = "assocarrayliteral"; | |
| 510 Token.tochars[TOK.TOKstructliteral] = "structliteral"; | |
| 511 Token.tochars[TOK.TOKstring] = "string"; | |
| 512 Token.tochars[TOK.TOKdsymbol] = "symbol"; | |
| 513 Token.tochars[TOK.TOKtuple] = "tuple"; | |
| 514 Token.tochars[TOK.TOKdeclaration] = "declaration"; | |
| 515 Token.tochars[TOK.TOKdottd] = "dottd"; | |
| 516 Token.tochars[TOK.TOKon_scope_exit] = "scope(exit)"; | |
| 517 Token.tochars[TOK.TOKon_scope_success] = "scope(success)"; | |
| 518 Token.tochars[TOK.TOKon_scope_failure] = "scope(failure)"; | |
| 519 } | |
| 520 | |
| 521 static Identifier idPool(string s) | |
| 522 { | |
| 523 StringValue* sv = stringtable.update(s); | |
| 524 Identifier id = cast(Identifier) sv.ptrvalue; | |
| 525 if (id is null) | |
| 526 { | |
| 527 id = new Identifier(sv.lstring.string_, TOK.TOKidentifier); | |
| 528 sv.ptrvalue = cast(void*)id; | |
| 529 } | |
| 530 | |
| 531 return id; | |
| 532 } | |
| 533 | |
| 534 static Identifier uniqueId(string s) | |
| 535 { | |
| 536 static int num; | |
| 537 return uniqueId(s, ++num); | |
| 538 } | |
| 539 | |
| 540 /********************************************* | |
| 541 * Create a unique identifier using the prefix s. | |
| 542 */ | |
| 543 static Identifier uniqueId(string s, int num) | |
| 544 { | |
| 545 char buffer[32]; | |
| 546 size_t slen = s.length; | |
| 547 | |
| 548 assert(slen + num.sizeof * 3 + 1 <= buffer.sizeof); | |
| 549 int len = sprintf(buffer.ptr, "%.*s%d", s, num); | |
| 550 | |
| 551 return idPool(buffer[0..len].idup); | |
| 552 } | |
| 553 | |
| 554 TOK nextToken() | |
| 555 { | |
| 556 Token *t; | |
| 557 | |
| 558 if (token.next) | |
| 559 { | |
| 560 t = token.next; | |
| 561 memcpy(&token, t, Token.sizeof); | |
| 562 t.next = freelist; | |
| 563 freelist = t; | |
| 564 } | |
| 565 else | |
| 566 { | |
| 567 scan(&token); | |
| 568 } | |
| 569 | |
| 570 //token.print(); | |
| 571 return token.value; | |
| 572 } | |
| 573 | |
| 574 /*********************** | |
| 575 * Look ahead at next token's value. | |
| 576 */ | |
| 577 TOK peekNext() | |
| 578 { | |
| 579 return peek(&token).value; | |
| 580 } | |
| 581 | |
| 582 TOK peekNext2() | |
| 583 { | |
| 584 assert(false); | |
| 585 } | |
| 586 | |
| 587 void scan(Token* t) | |
| 588 { | |
| 589 uint lastLine = loc.linnum; | |
| 590 uint linnum; | |
| 591 | |
| 592 t.blockComment = null; | |
| 593 t.lineComment = null; | |
| 594 while (1) | |
| 595 { | |
| 596 t.ptr = p; | |
| 597 //printf("p = %p, *p = '%c'\n",p,*p); | |
| 598 switch (*p) | |
| 599 { | |
| 600 case 0: | |
| 601 case 0x1A: | |
| 602 t.value = TOK.TOKeof; // end of file | |
| 603 return; | |
| 604 | |
| 605 case ' ': | |
| 606 case '\t': | |
| 607 case '\v': | |
| 608 case '\f': | |
| 609 p++; | |
| 610 continue; // skip white space | |
| 611 | |
| 612 case '\r': | |
| 613 p++; | |
| 614 if (*p != '\n') // if CR stands by itself | |
| 615 loc.linnum++; | |
| 616 continue; // skip white space | |
| 617 | |
| 618 case '\n': | |
| 619 p++; | |
| 620 loc.linnum++; | |
| 621 continue; // skip white space | |
| 622 | |
| 623 case '0': case '1': case '2': case '3': case '4': | |
| 624 case '5': case '6': case '7': case '8': case '9': | |
| 625 t.value = number(t); | |
| 626 return; | |
| 627 | |
| 628 version (CSTRINGS) { | |
| 629 case '\'': | |
| 630 t.value = charConstant(t, 0); | |
| 631 return; | |
| 632 | |
| 633 case '"': | |
| 634 t.value = stringConstant(t,0); | |
| 635 return; | |
| 636 | |
| 637 case 'l': | |
| 638 case 'L': | |
| 639 if (p[1] == '\'') | |
| 640 { | |
| 641 p++; | |
| 642 t.value = charConstant(t, 1); | |
| 643 return; | |
| 644 } | |
| 645 else if (p[1] == '"') | |
| 646 { | |
| 647 p++; | |
| 648 t.value = stringConstant(t, 1); | |
| 649 return; | |
| 650 } | |
| 651 } else { | |
| 652 case '\'': | |
| 653 t.value = charConstant(t,0); | |
| 654 return; | |
| 655 | |
| 656 case 'r': | |
| 657 if (p[1] != '"') | |
| 658 goto case_ident; | |
| 659 p++; | |
| 660 case '`': | |
| 661 t.value = wysiwygStringConstant(t, *p); | |
| 662 return; | |
| 663 | |
| 664 case 'x': | |
| 665 if (p[1] != '"') | |
| 666 goto case_ident; | |
| 667 p++; | |
| 668 t.value = hexStringConstant(t); | |
| 669 return; | |
| 670 | |
| 671 version (DMDV2) { | |
| 672 case 'q': | |
| 673 if (p[1] == '"') | |
| 674 { | |
| 675 p++; | |
| 676 t.value = delimitedStringConstant(t); | |
| 677 return; | |
| 678 } | |
| 679 else if (p[1] == '{') | |
| 680 { | |
| 681 p++; | |
| 682 t.value = tokenStringConstant(t); | |
| 683 return; | |
| 684 } | |
| 685 else | |
| 686 goto case_ident; | |
| 687 } | |
| 688 | |
| 689 case '"': | |
| 690 t.value = escapeStringConstant(t,0); | |
| 691 return; | |
| 692 version (TEXTUAL_ASSEMBLY_OUT) { | |
| 693 } else { | |
| 694 case '\\': // escaped string literal | |
| 695 { uint c; | |
| 696 ubyte* pstart = p; | |
| 697 | |
| 698 stringbuffer.reset(); | |
| 699 do | |
| 700 { | |
| 701 p++; | |
| 702 switch (*p) | |
| 703 { | |
| 704 case 'u': | |
| 705 case 'U': | |
| 706 case '&': | |
| 707 c = escapeSequence(); | |
| 708 stringbuffer.writeUTF8(c); | |
| 709 break; | |
| 710 | |
| 711 default: | |
| 712 c = escapeSequence(); | |
| 713 stringbuffer.writeByte(c); | |
| 714 break; | |
| 715 } | |
| 716 } while (*p == '\\'); | |
| 717 t.len = stringbuffer.offset; | |
| 718 stringbuffer.writeByte(0); | |
| 2 | 719 char* cc = cast(char*)GC.malloc(stringbuffer.offset); |
| 0 | 720 memcpy(cc, stringbuffer.data, stringbuffer.offset); |
| 721 t.ustring = cc; | |
| 722 t.postfix = 0; | |
| 723 t.value = TOK.TOKstring; | |
| 724 if (!global.params.useDeprecated) | |
| 725 error("Escape String literal %.*s is deprecated, use double quoted string literal \"%.*s\" instead", p - pstart, pstart, p - pstart, pstart); | |
| 726 return; | |
| 727 } | |
| 728 } | |
| 729 case 'l': | |
| 730 case 'L': | |
| 731 } | |
| 732 case 'a': case 'b': case 'c': case 'd': case 'e': | |
| 733 case 'f': case 'g': case 'h': case 'i': case 'j': | |
| 734 case 'k': case 'm': case 'n': case 'o': | |
| 735 version (DMDV2) { | |
| 736 case 'p': /*case 'q': case 'r':*/ case 's': case 't': | |
| 737 } else { | |
| 738 case 'p': case 'q': /*case 'r':*/ case 's': case 't': | |
| 739 } | |
| 740 case 'u': case 'v': case 'w': /*case 'x':*/ case 'y': | |
| 741 case 'z': | |
| 742 case 'A': case 'B': case 'C': case 'D': case 'E': | |
| 743 case 'F': case 'G': case 'H': case 'I': case 'J': | |
| 744 case 'K': case 'M': case 'N': case 'O': | |
| 745 case 'P': case 'Q': case 'R': case 'S': case 'T': | |
| 746 case 'U': case 'V': case 'W': case 'X': case 'Y': | |
| 747 case 'Z': | |
| 748 case '_': | |
| 749 case_ident: | |
| 750 { ubyte c; | |
| 751 StringValue *sv; | |
| 752 Identifier id; | |
| 753 | |
| 754 do | |
| 755 { | |
| 756 c = *++p; | |
| 757 } while (isidchar(c) || (c & 0x80 && isUniAlpha(decodeUTF()))); | |
| 758 sv = stringtable.update((cast(immutable(char)*)t.ptr)[0.. p - t.ptr]); /// | |
| 759 id = cast(Identifier) sv.ptrvalue; | |
| 760 if (id is null) | |
| 761 { id = new Identifier(sv.lstring.string_, TOK.TOKidentifier); | |
| 762 sv.ptrvalue = cast(void*)id; | |
| 763 } | |
| 764 t.ident = id; | |
| 765 t.value = cast(TOK) id.value; | |
| 766 anyToken = 1; | |
| 767 if (*t.ptr == '_') // if special identifier token | |
| 768 { | |
| 769 static char date[11+1]; | |
| 770 static char time[8+1]; | |
| 771 static char timestamp[24+1]; | |
| 772 | |
| 773 if (!date[0]) // lazy evaluation | |
| 774 { time_t tm; | |
| 775 char *p; | |
| 776 | |
| 777 .time(&tm); | |
| 778 p = ctime(&tm); | |
| 779 assert(p); | |
| 780 sprintf(date.ptr, "%.6s %.4s", p + 4, p + 20); | |
| 781 sprintf(time.ptr, "%.8s", p + 11); | |
| 782 sprintf(timestamp.ptr, "%.24s", p); | |
| 783 } | |
| 784 | |
| 785 ///version (DMDV1) { | |
| 786 /// if (mod && id == Id.FILE) | |
| 787 /// { | |
| 788 /// t.ustring = cast(ubyte*)(loc.filename ? loc.filename : mod.ident.toChars()); | |
| 789 /// goto Lstr; | |
| 790 /// } | |
| 791 /// else if (mod && id == Id.LINE) | |
| 792 /// { | |
| 793 /// t.value = TOK.TOKint64v; | |
| 794 /// t.uns64value = loc.linnum; | |
| 795 /// } | |
| 796 /// else | |
| 797 ///} | |
| 798 if (id == Id.DATE) | |
| 799 { | |
| 800 t.ustring = date.ptr; | |
| 801 goto Lstr; | |
| 802 } | |
| 803 else if (id == Id.TIME) | |
| 804 { | |
| 805 t.ustring = time.ptr; | |
| 806 goto Lstr; | |
| 807 } | |
| 808 else if (id == Id.VENDOR) | |
| 809 { | |
| 810 t.ustring = "Digital Mars D".ptr; | |
| 811 goto Lstr; | |
| 812 } | |
| 813 else if (id == Id.TIMESTAMP) | |
| 814 { | |
| 815 t.ustring = timestamp.ptr; | |
| 816 Lstr: | |
| 817 t.value = TOK.TOKstring; | |
| 818 Llen: | |
| 819 t.postfix = 0; | |
| 820 t.len = strlen(cast(char*)t.ustring); | |
| 821 } | |
| 822 else if (id == Id.VERSIONX) | |
| 823 { | |
| 824 uint major = 0; | |
| 825 uint minor = 0; | |
| 826 | |
| 827 foreach (char cc; global.version_[1..$]) | |
| 828 { | |
| 829 if (isdigit(cc)) | |
| 830 minor = minor * 10 + cc - '0'; | |
| 831 else if (cc == '.') | |
| 832 { | |
| 833 major = minor; | |
| 834 minor = 0; | |
| 835 } | |
| 836 else | |
| 837 break; | |
| 838 } | |
| 839 t.value = TOK.TOKint64v; | |
| 840 t.uns64value = major * 1000 + minor; | |
| 841 } | |
| 842 ///version (DMDV2) { | |
| 843 else if (id == Id.EOFX) | |
| 844 { | |
| 845 t.value = TOK.TOKeof; | |
| 846 // Advance scanner to end of file | |
| 847 while (!(*p == 0 || *p == 0x1A)) | |
| 848 p++; | |
| 849 } | |
| 850 ///} | |
| 851 } | |
| 852 //printf("t.value = %d\n",t.value); | |
| 853 return; | |
| 854 } | |
| 855 | |
| 856 case '/': | |
| 857 p++; | |
| 858 switch (*p) | |
| 859 { | |
| 860 case '=': | |
| 861 p++; | |
| 862 t.value = TOK.TOKdivass; | |
| 863 return; | |
| 864 | |
| 865 case '*': | |
| 866 p++; | |
| 867 linnum = loc.linnum; | |
| 868 while (1) | |
| 869 { | |
| 870 while (1) | |
| 871 { | |
| 872 ubyte c = *p; | |
| 873 switch (c) | |
| 874 { | |
| 875 case '/': | |
| 876 break; | |
| 877 | |
| 878 case '\n': | |
| 879 loc.linnum++; | |
| 880 p++; | |
| 881 continue; | |
| 882 | |
| 883 case '\r': | |
| 884 p++; | |
| 885 if (*p != '\n') | |
| 886 loc.linnum++; | |
| 887 continue; | |
| 888 | |
| 889 case 0: | |
| 890 case 0x1A: | |
| 891 error("unterminated /* */ comment"); | |
| 892 p = end; | |
| 893 t.value = TOK.TOKeof; | |
| 894 return; | |
| 895 | |
| 896 default: | |
| 897 if (c & 0x80) | |
| 898 { uint u = decodeUTF(); | |
| 899 if (u == PS || u == LS) | |
| 900 loc.linnum++; | |
| 901 } | |
| 902 p++; | |
| 903 continue; | |
| 904 } | |
| 905 break; | |
| 906 } | |
| 907 p++; | |
| 908 if (p[-2] == '*' && p - 3 != t.ptr) | |
| 909 break; | |
| 910 } | |
| 911 if (commentToken) | |
| 912 { | |
| 913 t.value = TOK.TOKcomment; | |
| 914 return; | |
| 915 } | |
| 916 else if (doDocComment && t.ptr[2] == '*' && p - 4 != t.ptr) | |
| 917 { // if /** but not /**/ | |
| 918 getDocComment(t, lastLine == linnum); | |
| 919 } | |
| 920 continue; | |
| 921 | |
| 922 case '/': // do // style comments | |
| 923 linnum = loc.linnum; | |
| 924 while (1) | |
| 925 { ubyte c = *++p; | |
| 926 switch (c) | |
| 927 { | |
| 928 case '\n': | |
| 929 break; | |
| 930 | |
| 931 case '\r': | |
| 932 if (p[1] == '\n') | |
| 933 p++; | |
| 934 break; | |
| 935 | |
| 936 case 0: | |
| 937 case 0x1A: | |
| 938 if (commentToken) | |
| 939 { | |
| 940 p = end; | |
| 941 t.value = TOK.TOKcomment; | |
| 942 return; | |
| 943 } | |
| 944 if (doDocComment && t.ptr[2] == '/') | |
| 945 getDocComment(t, lastLine == linnum); | |
| 946 p = end; | |
| 947 t.value = TOK.TOKeof; | |
| 948 return; | |
| 949 | |
| 950 default: | |
| 951 if (c & 0x80) | |
| 952 { uint u = decodeUTF(); | |
| 953 if (u == PS || u == LS) | |
| 954 break; | |
| 955 } | |
| 956 continue; | |
| 957 } | |
| 958 break; | |
| 959 } | |
| 960 | |
| 961 if (commentToken) | |
| 962 { | |
| 963 p++; | |
| 964 loc.linnum++; | |
| 965 t.value = TOK.TOKcomment; | |
| 966 return; | |
| 967 } | |
| 968 if (doDocComment && t.ptr[2] == '/') | |
| 969 getDocComment(t, lastLine == linnum); | |
| 970 | |
| 971 p++; | |
| 972 loc.linnum++; | |
| 973 continue; | |
| 974 | |
| 975 case '+': | |
| 976 { | |
| 977 int nest; | |
| 978 | |
| 979 linnum = loc.linnum; | |
| 980 p++; | |
| 981 nest = 1; | |
| 982 while (1) | |
| 983 { ubyte c = *p; | |
| 984 switch (c) | |
| 985 { | |
| 986 case '/': | |
| 987 p++; | |
| 988 if (*p == '+') | |
| 989 { | |
| 990 p++; | |
| 991 nest++; | |
| 992 } | |
| 993 continue; | |
| 994 | |
| 995 case '+': | |
| 996 p++; | |
| 997 if (*p == '/') | |
| 998 { | |
| 999 p++; | |
| 1000 if (--nest == 0) | |
| 1001 break; | |
| 1002 } | |
| 1003 continue; | |
| 1004 | |
| 1005 case '\r': | |
| 1006 p++; | |
| 1007 if (*p != '\n') | |
| 1008 loc.linnum++; | |
| 1009 continue; | |
| 1010 | |
| 1011 case '\n': | |
| 1012 loc.linnum++; | |
| 1013 p++; | |
| 1014 continue; | |
| 1015 | |
| 1016 case 0: | |
| 1017 case 0x1A: | |
| 1018 error("unterminated /+ +/ comment"); | |
| 1019 p = end; | |
| 1020 t.value = TOK.TOKeof; | |
| 1021 return; | |
| 1022 | |
| 1023 default: | |
| 1024 if (c & 0x80) | |
| 1025 { uint u = decodeUTF(); | |
| 1026 if (u == PS || u == LS) | |
| 1027 loc.linnum++; | |
| 1028 } | |
| 1029 p++; | |
| 1030 continue; | |
| 1031 } | |
| 1032 break; | |
| 1033 } | |
| 1034 if (commentToken) | |
| 1035 { | |
| 1036 t.value = TOK.TOKcomment; | |
| 1037 return; | |
| 1038 } | |
| 1039 if (doDocComment && t.ptr[2] == '+' && p - 4 != t.ptr) | |
| 1040 { // if /++ but not /++/ | |
| 1041 getDocComment(t, lastLine == linnum); | |
| 1042 } | |
| 1043 continue; | |
| 1044 } | |
| 1045 | |
| 1046 default: | |
| 1047 break; /// | |
| 1048 } | |
| 1049 t.value = TOK.TOKdiv; | |
| 1050 return; | |
| 1051 | |
| 1052 case '.': | |
| 1053 p++; | |
| 1054 if (isdigit(*p)) | |
| 1055 { /* Note that we don't allow ._1 and ._ as being | |
| 1056 * valid floating point numbers. | |
| 1057 */ | |
| 1058 p--; | |
| 1059 t.value = inreal(t); | |
| 1060 } | |
| 1061 else if (p[0] == '.') | |
| 1062 { | |
| 1063 if (p[1] == '.') | |
| 1064 { p += 2; | |
| 1065 t.value = TOK.TOKdotdotdot; | |
| 1066 } | |
| 1067 else | |
| 1068 { p++; | |
| 1069 t.value = TOK.TOKslice; | |
| 1070 } | |
| 1071 } | |
| 1072 else | |
| 1073 t.value = TOK.TOKdot; | |
| 1074 return; | |
| 1075 | |
| 1076 case '&': | |
| 1077 p++; | |
| 1078 if (*p == '=') | |
| 1079 { p++; | |
| 1080 t.value = TOK.TOKandass; | |
| 1081 } | |
| 1082 else if (*p == '&') | |
| 1083 { p++; | |
| 1084 t.value = TOK.TOKandand; | |
| 1085 } | |
| 1086 else | |
| 1087 t.value = TOK.TOKand; | |
| 1088 return; | |
| 1089 | |
| 1090 case '|': | |
| 1091 p++; | |
| 1092 if (*p == '=') | |
| 1093 { p++; | |
| 1094 t.value = TOK.TOKorass; | |
| 1095 } | |
| 1096 else if (*p == '|') | |
| 1097 { p++; | |
| 1098 t.value = TOK.TOKoror; | |
| 1099 } | |
| 1100 else | |
| 1101 t.value = TOK.TOKor; | |
| 1102 return; | |
| 1103 | |
| 1104 case '-': | |
| 1105 p++; | |
| 1106 if (*p == '=') | |
| 1107 { p++; | |
| 1108 t.value = TOK.TOKminass; | |
| 1109 } | |
| 1110 /// #if 0 | |
| 1111 /// else if (*p == '>') | |
| 1112 /// { p++; | |
| 1113 /// t.value = TOK.TOKarrow; | |
| 1114 /// } | |
| 1115 /// #endif | |
| 1116 else if (*p == '-') | |
| 1117 { p++; | |
| 1118 t.value = TOK.TOKminusminus; | |
| 1119 } | |
| 1120 else | |
| 1121 t.value = TOK.TOKmin; | |
| 1122 return; | |
| 1123 | |
| 1124 case '+': | |
| 1125 p++; | |
| 1126 if (*p == '=') | |
| 1127 { p++; | |
| 1128 t.value = TOK.TOKaddass; | |
| 1129 } | |
| 1130 else if (*p == '+') | |
| 1131 { p++; | |
| 1132 t.value = TOK.TOKplusplus; | |
| 1133 } | |
| 1134 else | |
| 1135 t.value = TOK.TOKadd; | |
| 1136 return; | |
| 1137 | |
| 1138 case '<': | |
| 1139 p++; | |
| 1140 if (*p == '=') | |
| 1141 { p++; | |
| 1142 t.value = TOK.TOKle; // <= | |
| 1143 } | |
| 1144 else if (*p == '<') | |
| 1145 { p++; | |
| 1146 if (*p == '=') | |
| 1147 { p++; | |
| 1148 t.value = TOK.TOKshlass; // <<= | |
| 1149 } | |
| 1150 else | |
| 1151 t.value = TOK.TOKshl; // << | |
| 1152 } | |
| 1153 else if (*p == '>') | |
| 1154 { p++; | |
| 1155 if (*p == '=') | |
| 1156 { p++; | |
| 1157 t.value = TOK.TOKleg; // <>= | |
| 1158 } | |
| 1159 else | |
| 1160 t.value = TOK.TOKlg; // <> | |
| 1161 } | |
| 1162 else | |
| 1163 t.value = TOK.TOKlt; // < | |
| 1164 return; | |
| 1165 | |
| 1166 case '>': | |
| 1167 p++; | |
| 1168 if (*p == '=') | |
| 1169 { p++; | |
| 1170 t.value = TOK.TOKge; // >= | |
| 1171 } | |
| 1172 else if (*p == '>') | |
| 1173 { p++; | |
| 1174 if (*p == '=') | |
| 1175 { p++; | |
| 1176 t.value = TOK.TOKshrass; // >>= | |
| 1177 } | |
| 1178 else if (*p == '>') | |
| 1179 { p++; | |
| 1180 if (*p == '=') | |
| 1181 { p++; | |
| 1182 t.value = TOK.TOKushrass; // >>>= | |
| 1183 } | |
| 1184 else | |
| 1185 t.value = TOK.TOKushr; // >>> | |
| 1186 } | |
| 1187 else | |
| 1188 t.value = TOK.TOKshr; // >> | |
| 1189 } | |
| 1190 else | |
| 1191 t.value = TOK.TOKgt; // > | |
| 1192 return; | |
| 1193 | |
| 1194 case '!': | |
| 1195 p++; | |
| 1196 if (*p == '=') | |
| 1197 { p++; | |
| 1198 if (*p == '=' && global.params.Dversion == 1) | |
| 1199 { p++; | |
| 1200 t.value = TOK.TOKnotidentity; // !== | |
| 1201 } | |
| 1202 else | |
| 1203 t.value = TOK.TOKnotequal; // != | |
| 1204 } | |
| 1205 else if (*p == '<') | |
| 1206 { p++; | |
| 1207 if (*p == '>') | |
| 1208 { p++; | |
| 1209 if (*p == '=') | |
| 1210 { p++; | |
| 1211 t.value = TOK.TOKunord; // !<>= | |
| 1212 } | |
| 1213 else | |
| 1214 t.value = TOK.TOKue; // !<> | |
| 1215 } | |
| 1216 else if (*p == '=') | |
| 1217 { p++; | |
| 1218 t.value = TOK.TOKug; // !<= | |
| 1219 } | |
| 1220 else | |
| 1221 t.value = TOK.TOKuge; // !< | |
| 1222 } | |
| 1223 else if (*p == '>') | |
| 1224 { p++; | |
| 1225 if (*p == '=') | |
| 1226 { p++; | |
| 1227 t.value = TOK.TOKul; // !>= | |
| 1228 } | |
| 1229 else | |
| 1230 t.value = TOK.TOKule; // !> | |
| 1231 } | |
| 1232 else | |
| 1233 t.value = TOK.TOKnot; // ! | |
| 1234 return; | |
| 1235 | |
| 1236 case '=': | |
| 1237 p++; | |
| 1238 if (*p == '=') | |
| 1239 { p++; | |
| 1240 if (*p == '=' && global.params.Dversion == 1) | |
| 1241 { p++; | |
| 1242 t.value = TOK.TOKidentity; // === | |
| 1243 } | |
| 1244 else | |
| 1245 t.value = TOK.TOKequal; // == | |
| 1246 } | |
| 1247 else | |
| 1248 t.value = TOK.TOKassign; // = | |
| 1249 return; | |
| 1250 | |
| 1251 case '~': | |
| 1252 p++; | |
| 1253 if (*p == '=') | |
| 1254 { p++; | |
| 1255 t.value = TOK.TOKcatass; // ~= | |
| 1256 } | |
| 1257 else | |
| 1258 t.value = TOK.TOKtilde; // ~ | |
| 1259 return; | |
| 1260 /* | |
| 1261 #define SINGLE(c,tok) case c: p++; t.value = tok; return; | |
| 1262 | |
| 1263 SINGLE('(', TOKlparen) | |
| 1264 SINGLE(')', TOKrparen) | |
| 1265 SINGLE('[', TOKlbracket) | |
| 1266 SINGLE(']', TOKrbracket) | |
| 1267 SINGLE('{', TOKlcurly) | |
| 1268 SINGLE('}', TOKrcurly) | |
| 1269 SINGLE('?', TOKquestion) | |
| 1270 SINGLE(',', TOKcomma) | |
| 1271 SINGLE(';', TOKsemicolon) | |
| 1272 SINGLE(':', TOKcolon) | |
| 1273 SINGLE('$', TOKdollar) | |
| 1274 SINGLE('@', TOKat) | |
| 1275 | |
| 1276 #undef SINGLE | |
| 1277 | |
| 1278 #define DOUBLE(c1,tok1,c2,tok2) \ | |
| 1279 case c1: \ | |
| 1280 p++; \ | |
| 1281 if (*p == c2) \ | |
| 1282 { p++; \ | |
| 1283 t.value = tok2; \ | |
| 1284 } \ | |
| 1285 else \ | |
| 1286 t.value = tok1; \ | |
| 1287 return; | |
| 1288 | |
| 1289 DOUBLE('*', TOKmul, '=', TOKmulass) | |
| 1290 DOUBLE('%', TOKmod, '=', TOKmodass) | |
| 1291 DOUBLE('^', TOKxor, '=', TOKxorass) | |
| 1292 | |
| 1293 #undef DOUBLE | |
| 1294 */ | |
| 1295 | |
| 1296 case '(': p++; t.value = TOK.TOKlparen; return; | |
| 1297 case ')': p++; t.value = TOK.TOKrparen; return; | |
| 1298 case '[': p++; t.value = TOK.TOKlbracket; return; | |
| 1299 case ']': p++; t.value = TOK.TOKrbracket; return; | |
| 1300 case '{': p++; t.value = TOK.TOKlcurly; return; | |
| 1301 case '}': p++; t.value = TOK.TOKrcurly; return; | |
| 1302 case '?': p++; t.value = TOK.TOKquestion; return; | |
| 1303 case ',': p++; t.value = TOK.TOKcomma; return; | |
| 1304 case ';': p++; t.value = TOK.TOKsemicolon; return; | |
| 1305 case ':': p++; t.value = TOK.TOKcolon; return; | |
| 1306 case '$': p++; t.value = TOK.TOKdollar; return; | |
| 1307 case '@': p++; t.value = TOK.TOKat; return; | |
| 1308 | |
| 1309 case '*': | |
| 1310 p++; | |
| 1311 if (*p == '=') { | |
| 1312 p++; | |
| 1313 t.value = TOK.TOKmulass; | |
| 1314 } else { | |
| 1315 t.value = TOK.TOKmul; | |
| 1316 } | |
| 1317 return; | |
| 1318 | |
| 1319 case '%': | |
| 1320 p++; | |
| 1321 if (*p == '=') { | |
| 1322 p++; | |
| 1323 t.value = TOK.TOKmodass; | |
| 1324 } else { | |
| 1325 t.value = TOK.TOKmod; | |
| 1326 } | |
| 1327 return; | |
| 1328 | |
| 1329 case '^': | |
| 1330 p++; | |
| 1331 if (*p == '=') { | |
| 1332 p++; | |
| 1333 t.value = TOK.TOKxorass; | |
| 1334 } else { | |
| 1335 t.value = TOK.TOKxor; | |
| 1336 } | |
| 1337 return; | |
| 1338 | |
| 1339 case '#': | |
| 1340 p++; | |
| 1341 pragma_(); | |
| 1342 continue; | |
| 1343 | |
| 1344 default: | |
| 1345 { ubyte c = *p; | |
| 1346 | |
| 1347 if (c & 0x80) | |
| 1348 { uint u = decodeUTF(); | |
| 1349 | |
| 1350 // Check for start of unicode identifier | |
| 1351 if (isUniAlpha(u)) | |
| 1352 goto case_ident; | |
| 1353 | |
| 1354 if (u == PS || u == LS) | |
| 1355 { | |
| 1356 loc.linnum++; | |
| 1357 p++; | |
| 1358 continue; | |
| 1359 } | |
| 1360 } | |
| 1361 if (isprint(c)) | |
| 1362 error("unsupported char '%c'", c); | |
| 1363 else | |
| 1364 error("unsupported char 0x%02x", c); | |
| 1365 p++; | |
| 1366 continue; | |
| 1367 } | |
| 1368 } | |
| 1369 } | |
| 1370 } | |
| 1371 | |
| 1372 Token* peek(Token* ct) | |
| 1373 { | |
| 1374 Token* t; | |
| 1375 | |
| 1376 if (ct.next) | |
| 1377 t = ct.next; | |
| 1378 else | |
| 1379 { | |
| 1380 t = new Token(); | |
| 1381 scan(t); | |
| 1382 t.next = null; | |
| 1383 ct.next = t; | |
| 1384 } | |
| 1385 return t; | |
| 1386 } | |
| 1387 | |
| 1388 Token* peekPastParen(Token* tk) | |
| 1389 { | |
| 1390 //printf("peekPastParen()\n"); | |
| 1391 int parens = 1; | |
| 1392 int curlynest = 0; | |
| 1393 while (1) | |
| 1394 { | |
| 1395 tk = peek(tk); | |
| 1396 //tk.print(); | |
| 1397 switch (tk.value) | |
| 1398 { | |
| 1399 case TOK.TOKlparen: | |
| 1400 parens++; | |
| 1401 continue; | |
| 1402 | |
| 1403 case TOK.TOKrparen: | |
| 1404 --parens; | |
| 1405 if (parens) | |
| 1406 continue; | |
| 1407 tk = peek(tk); | |
| 1408 break; | |
| 1409 | |
| 1410 case TOK.TOKlcurly: | |
| 1411 curlynest++; | |
| 1412 continue; | |
| 1413 | |
| 1414 case TOK.TOKrcurly: | |
| 1415 if (--curlynest >= 0) | |
| 1416 continue; | |
| 1417 break; | |
| 1418 | |
| 1419 case TOK.TOKsemicolon: | |
| 1420 if (curlynest) | |
| 1421 continue; | |
| 1422 break; | |
| 1423 | |
| 1424 case TOK.TOKeof: | |
| 1425 break; | |
| 1426 | |
| 1427 default: | |
| 1428 continue; | |
| 1429 } | |
| 1430 return tk; | |
| 1431 } | |
| 1432 } | |
| 1433 | |
| 1434 /******************************************* | |
| 1435 * Parse escape sequence. | |
| 1436 */ | |
| 1437 uint escapeSequence() | |
| 1438 { | |
| 1439 uint c = *p; | |
| 1440 | |
| 1441 version (TEXTUAL_ASSEMBLY_OUT) { | |
| 1442 return c; | |
| 1443 } | |
| 1444 int n; | |
| 1445 int ndigits; | |
| 1446 | |
| 1447 switch (c) | |
| 1448 { | |
| 1449 case '\'': | |
| 1450 case '"': | |
| 1451 case '?': | |
| 1452 case '\\': | |
| 1453 Lconsume: | |
| 1454 p++; | |
| 1455 break; | |
| 1456 | |
| 1457 case 'a': c = 7; goto Lconsume; | |
| 1458 case 'b': c = 8; goto Lconsume; | |
| 1459 case 'f': c = 12; goto Lconsume; | |
| 1460 case 'n': c = 10; goto Lconsume; | |
| 1461 case 'r': c = 13; goto Lconsume; | |
| 1462 case 't': c = 9; goto Lconsume; | |
| 1463 case 'v': c = 11; goto Lconsume; | |
| 1464 | |
| 1465 case 'u': | |
| 1466 ndigits = 4; | |
| 1467 goto Lhex; | |
| 1468 case 'U': | |
| 1469 ndigits = 8; | |
| 1470 goto Lhex; | |
| 1471 case 'x': | |
| 1472 ndigits = 2; | |
| 1473 Lhex: | |
| 1474 p++; | |
| 1475 c = *p; | |
| 1476 if (ishex(cast(ubyte)c)) | |
| 1477 { | |
| 1478 uint v; | |
| 1479 | |
| 1480 n = 0; | |
| 1481 v = 0; | |
| 1482 while (1) | |
| 1483 { | |
| 1484 if (isdigit(c)) | |
| 1485 c -= '0'; | |
| 1486 else if (islower(c)) | |
| 1487 c -= 'a' - 10; | |
| 1488 else | |
| 1489 c -= 'A' - 10; | |
| 1490 v = v * 16 + c; | |
| 1491 c = *++p; | |
| 1492 if (++n == ndigits) | |
| 1493 break; | |
| 1494 if (!ishex(cast(ubyte)c)) | |
| 1495 { error("escape hex sequence has %d hex digits instead of %d", n, ndigits); | |
| 1496 break; | |
| 1497 } | |
| 1498 } | |
| 1499 if (ndigits != 2 && !utf_isValidDchar(v)) | |
| 1500 { error("invalid UTF character \\U%08x", v); | |
| 1501 v = '?'; // recover with valid UTF character | |
| 1502 } | |
| 1503 c = v; | |
| 1504 } | |
| 1505 else | |
| 1506 error("undefined escape hex sequence \\%c\n",c); | |
| 1507 break; | |
| 1508 | |
| 1509 case '&': // named character entity | |
| 1510 for (ubyte* idstart = ++p; true; p++) | |
| 1511 { | |
| 1512 switch (*p) | |
| 1513 { | |
| 1514 case ';': | |
| 1515 c = HtmlNamedEntity(idstart, p - idstart); | |
| 1516 if (c == ~0) | |
| 1517 { | |
| 1518 error("unnamed character entity &%s;", idstart[0..(p - idstart)]); | |
| 1519 c = ' '; | |
| 1520 } | |
| 1521 p++; | |
| 1522 break; | |
| 1523 | |
| 1524 default: | |
| 1525 if (isalpha(*p) || | |
| 1526 (p != idstart + 1 && isdigit(*p))) | |
| 1527 continue; | |
| 1528 error("unterminated named entity"); | |
| 1529 break; | |
| 1530 } | |
| 1531 break; | |
| 1532 } | |
| 1533 break; | |
| 1534 | |
| 1535 case 0: | |
| 1536 case 0x1A: // end of file | |
| 1537 c = '\\'; | |
| 1538 break; | |
| 1539 | |
| 1540 default: | |
| 1541 if (isoctal(cast(ubyte)c)) | |
| 1542 { | |
| 1543 uint v; | |
| 1544 | |
| 1545 n = 0; | |
| 1546 v = 0; | |
| 1547 do | |
| 1548 { | |
| 1549 v = v * 8 + (c - '0'); | |
| 1550 c = *++p; | |
| 1551 } while (++n < 3 && isoctal(cast(ubyte)c)); | |
| 1552 c = v; | |
| 1553 if (c > 0xFF) | |
| 1554 error("0%03o is larger than a byte", c); | |
| 1555 } | |
| 1556 else | |
| 1557 error("undefined escape sequence \\%c\n",c); | |
| 1558 break; | |
| 1559 } | |
| 1560 return c; | |
| 1561 } | |
| 1562 | |
| 1563 TOK wysiwygStringConstant(Token* t, int tc) | |
| 1564 { | |
|
8
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1565 uint c; |
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1566 Loc start = loc; |
|
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|
1567 |
|
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|
1568 p++; |
|
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1569 stringbuffer.reset(); |
|
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|
1570 while (true) |
|
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|
1571 { |
|
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1572 c = *p++; |
|
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|
1573 switch (c) |
|
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|
1574 { |
|
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1575 case '\n': |
|
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|
1576 loc.linnum++; |
|
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|
1577 break; |
|
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|
1578 |
|
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|
1579 case '\r': |
|
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|
1580 if (*p == '\n') |
|
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|
1581 continue; // ignore |
|
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|
1582 c = '\n'; // treat EndOfLine as \n character |
|
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|
1583 loc.linnum++; |
|
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|
1584 break; |
|
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|
1585 |
|
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1586 case 0: |
|
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|
1587 case 0x1A: |
|
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|
1588 error("unterminated string constant starting at %s", start.toChars()); |
|
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|
1589 t.ustring = "".ptr; |
|
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|
1590 t.len = 0; |
|
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|
1591 t.postfix = 0; |
|
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|
1592 return TOKstring; |
|
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|
1593 |
|
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|
1594 case '"': |
|
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1595 case '`': |
|
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|
1596 if (c == tc) |
|
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|
1597 { |
|
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|
1598 t.len = stringbuffer.offset; |
|
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|
1599 stringbuffer.writeByte(0); |
|
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1600 char* tmp = cast(char*)GC.malloc(stringbuffer.offset); |
|
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|
1601 memcpy(tmp, stringbuffer.data, stringbuffer.offset); |
|
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|
1602 t.ustring = tmp; |
|
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|
1603 stringPostfix(t); |
|
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|
1604 return TOKstring; |
|
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|
1605 } |
|
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|
1606 break; |
|
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|
1607 |
|
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|
1608 default: |
|
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|
1609 if (c & 0x80) |
|
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|
1610 { p--; |
|
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|
1611 uint u = decodeUTF(); |
|
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|
1612 p++; |
|
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|
1613 if (u == PS || u == LS) |
|
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|
1614 loc.linnum++; |
|
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|
1615 stringbuffer.writeUTF8(u); |
|
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|
1616 continue; |
|
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diff
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|
1617 } |
|
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|
1618 break; |
|
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1619 } |
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1620 stringbuffer.writeByte(c); |
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1621 } |
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1622 |
| 0 | 1623 assert(false); |
| 1624 } | |
| 1625 | |
| 51 | 1626 /************************************** |
| 1627 * Lex hex strings: | |
| 1628 * x"0A ae 34FE BD" | |
| 1629 */ | |
| 0 | 1630 TOK hexStringConstant(Token* t) |
| 1631 { | |
| 51 | 1632 uint c; |
| 1633 Loc start = loc; | |
| 1634 uint n = 0; | |
| 1635 uint v; | |
| 1636 | |
| 1637 p++; | |
| 1638 stringbuffer.reset(); | |
| 1639 while (1) | |
| 1640 { | |
| 1641 c = *p++; | |
| 1642 switch (c) | |
| 1643 { | |
| 1644 case ' ': | |
| 1645 case '\t': | |
| 1646 case '\v': | |
| 1647 case '\f': | |
| 1648 continue; // skip white space | |
| 1649 | |
| 1650 case '\r': | |
| 1651 if (*p == '\n') | |
| 1652 continue; // ignore | |
| 1653 // Treat isolated '\r' as if it were a '\n' | |
| 1654 case '\n': | |
| 1655 loc.linnum++; | |
| 1656 continue; | |
| 1657 | |
| 1658 case 0: | |
| 1659 case 0x1A: | |
| 1660 error("unterminated string constant starting at %s", start.toChars()); | |
| 1661 t.ustring = "".ptr; | |
| 1662 t.len = 0; | |
| 1663 t.postfix = 0; | |
| 1664 return TOKstring; | |
| 1665 | |
| 1666 case '"': | |
| 1667 if (n & 1) | |
| 1668 { | |
| 1669 error("odd number (%d) of hex characters in hex string", n); | |
| 1670 stringbuffer.writeByte(v); | |
| 1671 } | |
| 1672 t.len = stringbuffer.offset; | |
| 1673 stringbuffer.writeByte(0); | |
| 1674 void* mem = malloc(stringbuffer.offset); | |
| 1675 memcpy(mem, stringbuffer.data, stringbuffer.offset); | |
| 1676 t.ustring = cast(const(char)*)mem; | |
| 1677 stringPostfix(t); | |
| 1678 return TOKstring; | |
| 1679 | |
| 1680 default: | |
| 1681 if (c >= '0' && c <= '9') | |
| 1682 c -= '0'; | |
| 1683 else if (c >= 'a' && c <= 'f') | |
| 1684 c -= 'a' - 10; | |
| 1685 else if (c >= 'A' && c <= 'F') | |
| 1686 c -= 'A' - 10; | |
| 1687 else if (c & 0x80) | |
| 1688 { p--; | |
| 1689 uint u = decodeUTF(); | |
| 1690 p++; | |
| 1691 if (u == PS || u == LS) | |
| 1692 loc.linnum++; | |
| 1693 else | |
| 1694 error("non-hex character \\u%x", u); | |
| 1695 } | |
| 1696 else | |
| 1697 error("non-hex character '%c'", c); | |
| 1698 if (n & 1) | |
| 1699 { v = (v << 4) | c; | |
| 1700 stringbuffer.writeByte(v); | |
| 1701 } | |
| 1702 else | |
| 1703 v = c; | |
| 1704 n++; | |
| 1705 break; | |
| 1706 } | |
| 1707 } | |
| 0 | 1708 } |
| 1709 | |
| 1710 version (DMDV2) { | |
| 51 | 1711 /************************************** |
| 1712 * Lex delimited strings: | |
| 1713 * q"(foo(xxx))" // "foo(xxx)" | |
| 1714 * q"[foo(]" // "foo(" | |
| 1715 * q"/foo]/" // "foo]" | |
| 1716 * q"HERE | |
| 1717 * foo | |
| 1718 * HERE" // "foo\n" | |
| 1719 * Input: | |
| 1720 * p is on the " | |
| 1721 */ | |
| 0 | 1722 TOK delimitedStringConstant(Token* t) |
| 1723 { | |
| 51 | 1724 uint c; |
| 1725 Loc start = loc; | |
| 1726 uint delimleft = 0; | |
| 1727 uint delimright = 0; | |
| 1728 uint nest = 1; | |
| 1729 uint nestcount; | |
| 1730 Identifier hereid = null; | |
| 1731 uint blankrol = 0; | |
| 1732 uint startline = 0; | |
| 1733 | |
| 1734 p++; | |
| 1735 stringbuffer.reset(); | |
| 1736 while (1) | |
| 1737 { | |
| 1738 c = *p++; | |
| 1739 //printf("c = '%c'\n", c); | |
| 1740 switch (c) | |
| 1741 { | |
| 1742 case '\n': | |
| 1743 Lnextline: | |
| 1744 loc.linnum++; | |
| 1745 startline = 1; | |
| 1746 if (blankrol) | |
| 1747 { blankrol = 0; | |
| 1748 continue; | |
| 1749 } | |
| 1750 if (hereid) | |
| 1751 { | |
| 1752 stringbuffer.writeUTF8(c); | |
| 1753 continue; | |
| 1754 } | |
| 1755 break; | |
| 1756 | |
| 1757 case '\r': | |
| 1758 if (*p == '\n') | |
| 1759 continue; // ignore | |
| 1760 c = '\n'; // treat EndOfLine as \n character | |
| 1761 goto Lnextline; | |
| 1762 | |
| 1763 case 0: | |
| 1764 case 0x1A: | |
| 1765 goto Lerror; | |
| 1766 | |
| 1767 default: | |
| 1768 if (c & 0x80) | |
| 1769 { p--; | |
| 1770 c = decodeUTF(); | |
| 1771 p++; | |
| 1772 if (c == PS || c == LS) | |
| 1773 goto Lnextline; | |
| 1774 } | |
| 1775 break; | |
| 1776 } | |
| 1777 if (delimleft == 0) | |
| 1778 { | |
| 1779 delimleft = c; | |
| 1780 nest = 1; | |
| 1781 nestcount = 1; | |
| 1782 if (c == '(') | |
| 1783 delimright = ')'; | |
| 1784 else if (c == '{') | |
| 1785 delimright = '}'; | |
| 1786 else if (c == '[') | |
| 1787 delimright = ']'; | |
| 1788 else if (c == '<') | |
| 1789 delimright = '>'; | |
| 1790 else if (isalpha(c) || c == '_' || (c >= 0x80 && isUniAlpha(c))) | |
| 1791 { | |
| 1792 // Start of identifier; must be a heredoc | |
| 1793 Token t2; | |
| 1794 p--; | |
| 1795 scan(&t2); // read in heredoc identifier | |
| 1796 if (t2.value != TOKidentifier) | |
| 1797 { | |
| 1798 error("identifier expected for heredoc, not %s", t2.toChars()); | |
| 1799 delimright = c; | |
| 1800 } | |
| 1801 else | |
| 1802 { | |
| 1803 hereid = t2.ident; | |
| 1804 //printf("hereid = '%s'\n", hereid.toChars()); | |
| 1805 blankrol = 1; | |
| 1806 } | |
| 1807 nest = 0; | |
| 1808 } | |
| 1809 else | |
| 1810 { | |
| 1811 delimright = c; | |
| 1812 nest = 0; | |
| 1813 if (isspace(c)) | |
| 1814 error("delimiter cannot be whitespace"); | |
| 1815 } | |
| 1816 } | |
| 1817 else | |
| 1818 { | |
| 1819 if (blankrol) | |
| 1820 { | |
| 1821 error("heredoc rest of line should be blank"); | |
| 1822 blankrol = 0; | |
| 1823 continue; | |
| 1824 } | |
| 1825 if (nest == 1) | |
| 1826 { | |
| 1827 if (c == delimleft) | |
| 1828 nestcount++; | |
| 1829 else if (c == delimright) | |
| 1830 { nestcount--; | |
| 1831 if (nestcount == 0) | |
| 1832 goto Ldone; | |
| 1833 } | |
| 1834 } | |
| 1835 else if (c == delimright) | |
| 1836 goto Ldone; | |
| 1837 if (startline && isalpha(c) && hereid) | |
| 1838 { | |
| 1839 Token t2; | |
| 1840 ubyte* psave = p; | |
| 1841 p--; | |
| 1842 scan(&t2); // read in possible heredoc identifier | |
| 1843 //printf("endid = '%s'\n", t2.ident.toChars()); | |
| 1844 if (t2.value == TOKidentifier && t2.ident.equals(hereid)) | |
| 1845 { | |
| 1846 /* should check that rest of line is blank | |
| 1847 */ | |
| 1848 goto Ldone; | |
| 1849 } | |
| 1850 p = psave; | |
| 1851 } | |
| 1852 stringbuffer.writeUTF8(c); | |
| 1853 startline = 0; | |
| 1854 } | |
| 1855 } | |
| 1856 | |
| 1857 Ldone: | |
| 1858 if (*p == '"') | |
| 1859 p++; | |
| 1860 else | |
| 1861 error("delimited string must end in %c\"", delimright); | |
| 1862 t.len = stringbuffer.offset; | |
| 1863 stringbuffer.writeByte(0); | |
| 1864 void* mem = malloc(stringbuffer.offset); | |
| 1865 memcpy(mem, stringbuffer.data, stringbuffer.offset); | |
| 1866 t.ustring = cast(const(char)*)mem; | |
| 1867 stringPostfix(t); | |
| 1868 return TOKstring; | |
| 1869 | |
| 1870 Lerror: | |
| 1871 error("unterminated string constant starting at %s", start.toChars()); | |
| 1872 t.ustring = "".ptr; | |
| 1873 t.len = 0; | |
| 1874 t.postfix = 0; | |
| 1875 return TOKstring; | |
| 0 | 1876 } |
| 1877 | |
|
8
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1878 /************************************** |
|
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1879 * Lex delimited strings: |
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1880 * q{ foo(xxx) } // " foo(xxx) " |
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1881 * q{foo(} // "foo(" |
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1882 * q{{foo}"}"} // "{foo}"}"" |
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1883 * Input: |
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1884 * p is on the q |
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1885 */ |
| 0 | 1886 TOK tokenStringConstant(Token* t) |
| 1887 { | |
|
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1888 uint nest = 1; |
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1889 Loc start = loc; |
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1890 ubyte* pstart = ++p; |
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1891 |
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1892 while (true) |
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1893 { |
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1894 Token tok; |
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1895 |
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1896 scan(&tok); |
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1897 switch (tok.value) |
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1898 { |
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1899 case TOKlcurly: |
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1900 nest++; |
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1901 continue; |
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1902 |
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1903 case TOKrcurly: |
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1904 if (--nest == 0) |
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1905 goto Ldone; |
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1906 continue; |
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1907 |
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1908 case TOKeof: |
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1909 goto Lerror; |
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1910 |
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1911 default: |
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1912 continue; |
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1913 } |
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1914 } |
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1915 |
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1916 Ldone: |
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1917 t.len = p - 1 - pstart; |
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1918 char* tmp = cast(char*)GC.malloc(t.len + 1); |
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1919 memcpy(tmp, pstart, t.len); |
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1920 tmp[t.len] = 0; |
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1921 t.ustring = tmp; |
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1922 stringPostfix(t); |
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1923 return TOKstring; |
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1924 |
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1925 Lerror: |
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1926 error("unterminated token string constant starting at %s", start.toChars()); |
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1927 t.ustring = "".ptr; |
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1928 t.len = 0; |
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1929 t.postfix = 0; |
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1930 return TOKstring; |
| 0 | 1931 } |
| 1932 } | |
| 1933 TOK escapeStringConstant(Token* t, int wide) | |
| 1934 { | |
| 1935 uint c; | |
| 1936 Loc start = loc; | |
| 1937 | |
| 1938 p++; | |
| 1939 stringbuffer.reset(); | |
| 1940 while (true) | |
| 1941 { | |
| 1942 c = *p++; | |
| 1943 switch (c) | |
| 1944 { | |
| 1945 version (TEXTUAL_ASSEMBLY_OUT) { | |
| 1946 } else { | |
| 1947 case '\\': | |
| 1948 switch (*p) | |
| 1949 { | |
| 1950 case 'u': | |
| 1951 case 'U': | |
| 1952 case '&': | |
| 1953 c = escapeSequence(); | |
| 1954 stringbuffer.writeUTF8(c); | |
| 1955 continue; | |
| 1956 | |
| 1957 default: | |
| 1958 c = escapeSequence(); | |
| 1959 break; | |
| 1960 } | |
| 1961 break; | |
| 1962 } | |
| 1963 case '\n': | |
| 1964 loc.linnum++; | |
| 1965 break; | |
| 1966 | |
| 1967 case '\r': | |
| 1968 if (*p == '\n') | |
| 1969 continue; // ignore | |
| 1970 c = '\n'; // treat EndOfLine as \n character | |
| 1971 loc.linnum++; | |
| 1972 break; | |
| 1973 | |
| 1974 case '"': | |
| 1975 t.len = stringbuffer.offset; | |
| 1976 stringbuffer.writeByte(0); | |
| 2 | 1977 char* tmp = cast(char*)GC.malloc(stringbuffer.offset); |
| 0 | 1978 memcpy(tmp, stringbuffer.data, stringbuffer.offset); |
| 1979 t.ustring = tmp; | |
| 1980 stringPostfix(t); | |
| 1981 return TOK.TOKstring; | |
| 1982 | |
| 1983 case 0: | |
| 1984 case 0x1A: | |
| 1985 p--; | |
| 1986 error("unterminated string constant starting at %s", start.toChars()); | |
| 1987 t.ustring = "".ptr; | |
| 1988 t.len = 0; | |
| 1989 t.postfix = 0; | |
| 1990 return TOK.TOKstring; | |
| 1991 | |
| 1992 default: | |
| 1993 if (c & 0x80) | |
| 1994 { | |
| 1995 p--; | |
| 1996 c = decodeUTF(); | |
| 1997 if (c == LS || c == PS) | |
| 1998 { c = '\n'; | |
| 1999 loc.linnum++; | |
| 2000 } | |
| 2001 p++; | |
| 2002 stringbuffer.writeUTF8(c); | |
| 2003 continue; | |
| 2004 } | |
| 2005 break; | |
| 2006 } | |
| 2007 stringbuffer.writeByte(c); | |
| 2008 } | |
| 2009 | |
| 2010 assert(false); | |
| 2011 } | |
| 2012 | |
| 2013 TOK charConstant(Token* t, int wide) | |
| 2014 { | |
| 2015 uint c; | |
| 2016 TOK tk = TOKcharv; | |
| 2017 | |
| 2018 //printf("Lexer.charConstant\n"); | |
| 2019 p++; | |
| 2020 c = *p++; | |
| 2021 switch (c) | |
| 2022 { | |
| 2023 version (TEXTUAL_ASSEMBLY_OUT) { | |
| 2024 } else { | |
| 2025 case '\\': | |
| 2026 switch (*p) | |
| 2027 { | |
| 2028 case 'u': | |
| 2029 t.uns64value = escapeSequence(); | |
| 2030 tk = TOKwcharv; | |
| 2031 break; | |
| 2032 | |
| 2033 case 'U': | |
| 2034 case '&': | |
| 2035 t.uns64value = escapeSequence(); | |
| 2036 tk = TOKdcharv; | |
| 2037 break; | |
| 2038 | |
| 2039 default: | |
| 2040 t.uns64value = escapeSequence(); | |
| 2041 break; | |
| 2042 } | |
| 2043 break; | |
| 2044 } | |
| 2045 case '\n': | |
| 2046 L1: | |
| 2047 loc.linnum++; | |
| 2048 case '\r': | |
| 2049 case 0: | |
| 2050 case 0x1A: | |
| 2051 case '\'': | |
| 2052 error("unterminated character constant"); | |
| 2053 return tk; | |
| 2054 | |
| 2055 default: | |
| 2056 if (c & 0x80) | |
| 2057 { | |
| 2058 p--; | |
| 2059 c = decodeUTF(); | |
| 2060 p++; | |
| 2061 if (c == LS || c == PS) | |
| 2062 goto L1; | |
| 2063 if (c < 0xD800 || (c >= 0xE000 && c < 0xFFFE)) | |
| 2064 tk = TOKwcharv; | |
| 2065 else | |
| 2066 tk = TOKdcharv; | |
| 2067 } | |
| 2068 t.uns64value = c; | |
| 2069 break; | |
| 2070 } | |
| 2071 | |
| 2072 if (*p != '\'') | |
| 2073 { | |
| 2074 error("unterminated character constant"); | |
| 2075 return tk; | |
| 2076 } | |
| 2077 p++; | |
| 2078 return tk; | |
| 2079 } | |
| 2080 | |
| 2081 /*************************************** | |
| 2082 * Get postfix of string literal. | |
| 2083 */ | |
| 2084 void stringPostfix(Token* t) | |
| 2085 { | |
| 2086 switch (*p) | |
| 2087 { | |
| 2088 case 'c': | |
| 2089 case 'w': | |
| 2090 case 'd': | |
| 2091 t.postfix = *p; | |
| 2092 p++; | |
| 2093 break; | |
| 2094 | |
| 2095 default: | |
| 2096 t.postfix = 0; | |
| 2097 break; | |
| 2098 } | |
| 2099 } | |
| 2100 | |
| 2101 uint wchar_(uint u) | |
| 2102 { | |
| 2103 assert(false); | |
| 2104 } | |
| 2105 | |
| 2106 /************************************** | |
| 2107 * Read in a number. | |
| 2108 * If it's an integer, store it in tok.TKutok.Vlong. | |
| 2109 * integers can be decimal, octal or hex | |
| 2110 * Handle the suffixes U, UL, LU, L, etc. | |
| 2111 * If it's double, store it in tok.TKutok.Vdouble. | |
| 2112 * Returns: | |
| 2113 * TKnum | |
| 2114 * TKdouble,... | |
| 2115 */ | |
| 2116 | |
| 2117 TOK number(Token* t) | |
| 2118 { | |
| 2119 // We use a state machine to collect numbers | |
| 2120 enum STATE { STATE_initial, STATE_0, STATE_decimal, STATE_octal, STATE_octale, | |
| 2121 STATE_hex, STATE_binary, STATE_hex0, STATE_binary0, | |
| 2122 STATE_hexh, STATE_error }; | |
| 2123 STATE state; | |
| 2124 | |
| 2125 enum FLAGS | |
| 2126 { | |
| 2127 FLAGS_undefined = 0, | |
| 2128 FLAGS_decimal = 1, // decimal | |
| 2129 FLAGS_unsigned = 2, // u or U suffix | |
| 2130 FLAGS_long = 4, // l or L suffix | |
| 2131 }; | |
| 2132 | |
| 2133 FLAGS flags = FLAGS.FLAGS_decimal; | |
| 2134 | |
| 2135 int i; | |
| 2136 int base; | |
| 2137 uint c; | |
| 2138 ubyte *start; | |
| 2139 TOK result; | |
| 2140 | |
| 2141 //printf("Lexer.number()\n"); | |
| 2142 state = STATE.STATE_initial; | |
| 2143 base = 0; | |
| 2144 stringbuffer.reset(); | |
| 2145 start = p; | |
| 2146 while (1) | |
| 2147 { | |
| 2148 c = *p; | |
| 2149 switch (state) | |
| 2150 { | |
| 2151 case STATE.STATE_initial: // opening state | |
| 2152 if (c == '0') | |
| 2153 state = STATE.STATE_0; | |
| 2154 else | |
| 2155 state = STATE.STATE_decimal; | |
| 2156 break; | |
| 2157 | |
| 2158 case STATE.STATE_0: | |
| 2159 flags = (flags & ~FLAGS.FLAGS_decimal); | |
| 2160 switch (c) | |
| 2161 { | |
| 2162 version (ZEROH) { | |
| 2163 case 'H': // 0h | |
| 2164 case 'h': | |
| 2165 goto hexh; | |
| 2166 } | |
| 2167 case 'X': | |
| 2168 case 'x': | |
| 2169 state = STATE.STATE_hex0; | |
| 2170 break; | |
| 2171 | |
| 2172 case '.': | |
| 2173 if (p[1] == '.') // .. is a separate token | |
| 2174 goto done; | |
| 2175 case 'i': | |
| 2176 case 'f': | |
| 2177 case 'F': | |
| 2178 goto real_; | |
| 2179 version (ZEROH) { | |
| 2180 case 'E': | |
| 2181 case 'e': | |
| 2182 goto case_hex; | |
| 2183 } | |
| 2184 case 'B': | |
| 2185 case 'b': | |
| 2186 state = STATE.STATE_binary0; | |
| 2187 break; | |
| 2188 | |
| 2189 case '0': case '1': case '2': case '3': | |
| 2190 case '4': case '5': case '6': case '7': | |
| 2191 state = STATE.STATE_octal; | |
| 2192 break; | |
| 2193 | |
| 2194 version (ZEROH) { | |
| 2195 case '8': case '9': case 'A': | |
| 2196 case 'C': case 'D': case 'F': | |
| 2197 case 'a': case 'c': case 'd': case 'f': | |
| 2198 case_hex: | |
| 2199 state = STATE.STATE_hexh; | |
| 2200 break; | |
| 2201 } | |
| 2202 case '_': | |
| 2203 state = STATE.STATE_octal; | |
| 2204 p++; | |
| 2205 continue; | |
| 2206 | |
| 2207 case 'L': | |
| 2208 if (p[1] == 'i') | |
| 2209 goto real_; | |
| 2210 goto done; | |
| 2211 | |
| 2212 default: | |
| 2213 goto done; | |
| 2214 } | |
| 2215 break; | |
| 2216 | |
| 2217 case STATE.STATE_decimal: // reading decimal number | |
| 2218 if (!isdigit(c)) | |
| 2219 { | |
| 2220 version (ZEROH) { | |
| 2221 if (ishex(c) | |
| 2222 || c == 'H' || c == 'h' | |
| 2223 ) | |
| 2224 goto hexh; | |
| 2225 } | |
| 2226 if (c == '_') // ignore embedded _ | |
| 2227 { p++; | |
| 2228 continue; | |
| 2229 } | |
| 2230 if (c == '.' && p[1] != '.') | |
| 2231 goto real_; | |
| 2232 else if (c == 'i' || c == 'f' || c == 'F' || | |
| 2233 c == 'e' || c == 'E') | |
| 2234 { | |
| 2235 real_: // It's a real number. Back up and rescan as a real | |
| 2236 p = start; | |
| 2237 return inreal(t); | |
| 2238 } | |
| 2239 else if (c == 'L' && p[1] == 'i') | |
| 2240 goto real_; | |
| 2241 goto done; | |
| 2242 } | |
| 2243 break; | |
| 2244 | |
| 2245 case STATE.STATE_hex0: // reading hex number | |
| 2246 case STATE.STATE_hex: | |
| 2247 if (! ishex(cast(ubyte)c)) | |
| 2248 { | |
| 2249 if (c == '_') // ignore embedded _ | |
| 2250 { p++; | |
| 2251 continue; | |
| 2252 } | |
| 2253 if (c == '.' && p[1] != '.') | |
| 2254 goto real_; | |
| 2255 if (c == 'P' || c == 'p' || c == 'i') | |
| 2256 goto real_; | |
| 2257 if (state == STATE.STATE_hex0) | |
| 2258 error("Hex digit expected, not '%c'", c); | |
| 2259 goto done; | |
| 2260 } | |
| 2261 state = STATE.STATE_hex; | |
| 2262 break; | |
| 2263 | |
| 2264 version (ZEROH) { | |
| 2265 hexh: | |
| 2266 state = STATE.STATE_hexh; | |
| 2267 case STATE.STATE_hexh: // parse numbers like 0FFh | |
| 2268 if (!ishex(c)) | |
| 2269 { | |
| 2270 if (c == 'H' || c == 'h') | |
| 2271 { | |
| 2272 p++; | |
| 2273 base = 16; | |
| 2274 goto done; | |
| 2275 } | |
| 2276 else | |
| 2277 { | |
| 2278 // Check for something like 1E3 or 0E24 | |
| 2279 if (memchr(cast(char*)stringbuffer.data, 'E', stringbuffer.offset) || | |
| 2280 memchr(cast(char*)stringbuffer.data, 'e', stringbuffer.offset)) | |
| 2281 goto real_; | |
| 2282 error("Hex digit expected, not '%c'", c); | |
| 2283 goto done; | |
| 2284 } | |
| 2285 } | |
| 2286 break; | |
| 2287 } | |
| 2288 | |
| 2289 case STATE.STATE_octal: // reading octal number | |
| 2290 case STATE.STATE_octale: // reading octal number with non-octal digits | |
| 2291 if (!isoctal(cast(ubyte)c)) | |
| 2292 { | |
| 2293 version (ZEROH) { | |
| 2294 if (ishex(c) | |
| 2295 || c == 'H' || c == 'h' | |
| 2296 ) | |
| 2297 goto hexh; | |
| 2298 } | |
| 2299 if (c == '_') // ignore embedded _ | |
| 2300 { p++; | |
| 2301 continue; | |
| 2302 } | |
| 2303 if (c == '.' && p[1] != '.') | |
| 2304 goto real_; | |
| 2305 if (c == 'i') | |
| 2306 goto real_; | |
| 2307 if (isdigit(c)) | |
| 2308 { | |
| 2309 state = STATE.STATE_octale; | |
| 2310 } | |
| 2311 else | |
| 2312 goto done; | |
| 2313 } | |
| 2314 break; | |
| 2315 | |
| 2316 case STATE.STATE_binary0: // starting binary number | |
| 2317 case STATE.STATE_binary: // reading binary number | |
| 2318 if (c != '0' && c != '1') | |
| 2319 { | |
| 2320 version (ZEROH) { | |
| 2321 if (ishex(c) | |
| 2322 || c == 'H' || c == 'h' | |
| 2323 ) | |
| 2324 goto hexh; | |
| 2325 } | |
| 2326 if (c == '_') // ignore embedded _ | |
| 2327 { p++; | |
| 2328 continue; | |
| 2329 } | |
| 2330 if (state == STATE.STATE_binary0) | |
| 2331 { error("binary digit expected"); | |
| 2332 state = STATE.STATE_error; | |
| 2333 break; | |
| 2334 } | |
| 2335 else | |
| 2336 goto done; | |
| 2337 } | |
| 2338 state = STATE.STATE_binary; | |
| 2339 break; | |
| 2340 | |
| 2341 case STATE.STATE_error: // for error recovery | |
| 2342 if (!isdigit(c)) // scan until non-digit | |
| 2343 goto done; | |
| 2344 break; | |
| 2345 | |
| 2346 default: | |
| 2347 assert(0); | |
| 2348 } | |
| 2349 stringbuffer.writeByte(c); | |
| 2350 p++; | |
| 2351 } | |
| 2352 done: | |
| 2353 stringbuffer.writeByte(0); // terminate string | |
| 2354 if (state == STATE.STATE_octale) | |
| 2355 error("Octal digit expected"); | |
| 2356 | |
| 2357 ulong n; // unsigned >=64 bit integer type | |
| 2358 | |
| 2359 if (stringbuffer.offset == 2 && (state == STATE.STATE_decimal || state == STATE.STATE_0)) | |
| 2360 n = stringbuffer.data[0] - '0'; | |
| 2361 else | |
| 2362 { | |
| 2363 // Convert string to integer | |
| 2364 version (__DMC__) { | |
| 2365 errno = 0; | |
| 2366 n = strtoull(cast(char*)stringbuffer.data,null,base); | |
| 2367 if (errno == ERANGE) | |
| 2368 error("integer overflow"); | |
| 2369 } else { | |
| 2370 // Not everybody implements strtoull() | |
| 2371 char* p = cast(char*)stringbuffer.data; | |
| 2372 int r = 10, d; | |
| 2373 | |
| 2374 if (*p == '0') | |
| 2375 { | |
| 2376 if (p[1] == 'x' || p[1] == 'X') | |
| 2377 p += 2, r = 16; | |
| 2378 else if (p[1] == 'b' || p[1] == 'B') | |
| 2379 p += 2, r = 2; | |
| 2380 else if (isdigit(p[1])) | |
| 2381 p += 1, r = 8; | |
| 2382 } | |
| 2383 | |
| 2384 n = 0; | |
| 2385 while (1) | |
| 2386 { | |
| 2387 if (*p >= '0' && *p <= '9') | |
| 2388 d = *p - '0'; | |
| 2389 else if (*p >= 'a' && *p <= 'z') | |
| 2390 d = *p - 'a' + 10; | |
| 2391 else if (*p >= 'A' && *p <= 'Z') | |
| 2392 d = *p - 'A' + 10; | |
| 2393 else | |
| 2394 break; | |
| 2395 if (d >= r) | |
| 2396 break; | |
| 2397 ulong n2 = n * r; | |
| 2398 //printf("n2 / r = %llx, n = %llx\n", n2/r, n); | |
| 2399 if (n2 / r != n || n2 + d < n) | |
| 2400 { | |
| 2401 error ("integer overflow"); | |
| 2402 break; | |
| 2403 } | |
| 2404 | |
| 2405 n = n2 + d; | |
| 2406 p++; | |
| 2407 } | |
| 2408 } | |
| 2409 if (n.sizeof > 8 && | |
| 2410 n > 0xFFFFFFFFFFFFFFFF) // if n needs more than 64 bits | |
| 2411 error("integer overflow"); | |
| 2412 } | |
| 2413 | |
| 2414 // Parse trailing 'u', 'U', 'l' or 'L' in any combination | |
| 2415 while (1) | |
| 2416 { FLAGS f; | |
| 2417 | |
| 2418 switch (*p) | |
| 2419 { case 'U': | |
| 2420 case 'u': | |
| 2421 f = FLAGS.FLAGS_unsigned; | |
| 2422 goto L1; | |
| 2423 | |
| 2424 case 'l': | |
| 2425 if (1 || !global.params.useDeprecated) | |
| 2426 error("'l' suffix is deprecated, use 'L' instead"); | |
| 2427 case 'L': | |
| 2428 f = FLAGS.FLAGS_long; | |
| 2429 L1: | |
| 2430 p++; | |
| 2431 if (flags & f) | |
| 2432 error("unrecognized token"); | |
| 2433 flags = (flags | f); | |
| 2434 continue; | |
| 2435 default: | |
| 2436 break; | |
| 2437 } | |
| 2438 break; | |
| 2439 } | |
| 2440 | |
| 2441 switch (flags) | |
| 2442 { | |
| 2443 case FLAGS.FLAGS_undefined: | |
| 2444 /* Octal or Hexadecimal constant. | |
| 2445 * First that fits: int, uint, long, ulong | |
| 2446 */ | |
| 2447 if (n & 0x8000000000000000) | |
| 2448 result = TOK.TOKuns64v; | |
| 2449 else if (n & 0xFFFFFFFF00000000) | |
| 2450 result = TOK.TOKint64v; | |
| 2451 else if (n & 0x80000000) | |
| 2452 result = TOK.TOKuns32v; | |
| 2453 else | |
| 2454 result = TOK.TOKint32v; | |
| 2455 break; | |
| 2456 | |
| 2457 case FLAGS.FLAGS_decimal: | |
| 2458 /* First that fits: int, long, long long | |
| 2459 */ | |
| 2460 if (n & 0x8000000000000000) | |
| 2461 { error("signed integer overflow"); | |
| 2462 result = TOK.TOKuns64v; | |
| 2463 } | |
| 2464 else if (n & 0xFFFFFFFF80000000) | |
| 2465 result = TOK.TOKint64v; | |
| 2466 else | |
| 2467 result = TOK.TOKint32v; | |
| 2468 break; | |
| 2469 | |
| 2470 case FLAGS.FLAGS_unsigned: | |
| 2471 case FLAGS.FLAGS_decimal | FLAGS.FLAGS_unsigned: | |
| 2472 /* First that fits: uint, ulong | |
| 2473 */ | |
| 2474 if (n & 0xFFFFFFFF00000000) | |
| 2475 result = TOK.TOKuns64v; | |
| 2476 else | |
| 2477 result = TOK.TOKuns32v; | |
| 2478 break; | |
| 2479 | |
| 2480 case FLAGS.FLAGS_decimal | FLAGS.FLAGS_long: | |
| 2481 if (n & 0x8000000000000000) | |
| 2482 { error("signed integer overflow"); | |
| 2483 result = TOK.TOKuns64v; | |
| 2484 } | |
| 2485 else | |
| 2486 result = TOK.TOKint64v; | |
| 2487 break; | |
| 2488 | |
| 2489 case FLAGS.FLAGS_long: | |
| 2490 if (n & 0x8000000000000000) | |
| 2491 result = TOK.TOKuns64v; | |
| 2492 else | |
| 2493 result = TOK.TOKint64v; | |
| 2494 break; | |
| 2495 | |
| 2496 case FLAGS.FLAGS_unsigned | FLAGS.FLAGS_long: | |
| 2497 case FLAGS.FLAGS_decimal | FLAGS.FLAGS_unsigned | FLAGS.FLAGS_long: | |
| 2498 result = TOK.TOKuns64v; | |
| 2499 break; | |
| 2500 | |
| 2501 default: | |
| 2502 debug { | |
| 2503 printf("%x\n",flags); | |
| 2504 } | |
| 2505 assert(0); | |
| 2506 } | |
| 2507 t.uns64value = n; | |
| 2508 return result; | |
| 2509 } | |
| 2510 | |
| 2511 /************************************** | |
| 2512 * Read in characters, converting them to real. | |
| 2513 * Bugs: | |
| 2514 * Exponent overflow not detected. | |
| 2515 * Too much requested precision is not detected. | |
| 2516 */ | |
| 2517 TOK inreal(Token* t) | |
| 2518 in | |
| 2519 { | |
| 2520 assert(*p == '.' || isdigit(*p)); | |
| 2521 } | |
| 2522 out (result) | |
| 2523 { | |
| 2524 switch (result) | |
| 2525 { | |
| 2526 case TOKfloat32v: | |
| 2527 case TOKfloat64v: | |
| 2528 case TOKfloat80v: | |
| 2529 case TOKimaginary32v: | |
| 2530 case TOKimaginary64v: | |
| 2531 case TOKimaginary80v: | |
| 2532 break; | |
| 2533 | |
| 2534 default: | |
| 2535 assert(0); | |
| 2536 } | |
| 2537 } | |
| 2538 body | |
| 2539 { | |
| 2540 int dblstate; | |
| 2541 uint c; | |
| 2542 char hex; // is this a hexadecimal-floating-constant? | |
| 2543 TOK result; | |
| 2544 | |
| 2545 //printf("Lexer.inreal()\n"); | |
| 2546 stringbuffer.reset(); | |
| 2547 dblstate = 0; | |
| 2548 hex = 0; | |
| 2549 Lnext: | |
| 2550 while (true) | |
| 2551 { | |
| 2552 // Get next char from input | |
| 2553 c = *p++; | |
| 2554 //printf("dblstate = %d, c = '%c'\n", dblstate, c); | |
| 2555 while (true) | |
| 2556 { | |
| 2557 switch (dblstate) | |
| 2558 { | |
| 2559 case 0: // opening state | |
| 2560 if (c == '0') | |
| 2561 dblstate = 9; | |
| 2562 else if (c == '.') | |
| 2563 dblstate = 3; | |
| 2564 else | |
| 2565 dblstate = 1; | |
| 2566 break; | |
| 2567 | |
| 2568 case 9: | |
| 2569 dblstate = 1; | |
| 2570 if (c == 'X' || c == 'x') | |
| 2571 { | |
| 2572 hex++; | |
| 2573 break; | |
| 2574 } | |
| 2575 case 1: // digits to left of . | |
| 2576 case 3: // digits to right of . | |
| 2577 case 7: // continuing exponent digits | |
| 2578 if (!isdigit(c) && !(hex && isxdigit(c))) | |
| 2579 { | |
| 2580 if (c == '_') | |
| 2581 goto Lnext; // ignore embedded '_' | |
| 2582 dblstate++; | |
| 2583 continue; | |
| 2584 } | |
| 2585 break; | |
| 2586 | |
| 2587 case 2: // no more digits to left of . | |
| 2588 if (c == '.') | |
| 2589 { | |
| 2590 dblstate++; | |
| 2591 break; | |
| 2592 } | |
| 2593 case 4: // no more digits to right of . | |
| 2594 if ((c == 'E' || c == 'e') || | |
| 2595 hex && (c == 'P' || c == 'p')) | |
| 2596 { | |
| 2597 dblstate = 5; | |
| 2598 hex = 0; // exponent is always decimal | |
| 2599 break; | |
| 2600 } | |
| 2601 if (hex) | |
| 2602 error("binary-exponent-part required"); | |
| 2603 goto done; | |
| 2604 | |
| 2605 case 5: // looking immediately to right of E | |
| 2606 dblstate++; | |
| 2607 if (c == '-' || c == '+') | |
| 2608 break; | |
| 2609 case 6: // 1st exponent digit expected | |
| 2610 if (!isdigit(c)) | |
| 2611 error("exponent expected"); | |
| 2612 dblstate++; | |
| 2613 break; | |
| 2614 | |
| 2615 case 8: // past end of exponent digits | |
| 2616 goto done; | |
| 2617 } | |
| 2618 break; | |
| 2619 } | |
| 2620 stringbuffer.writeByte(c); | |
| 2621 } | |
| 2622 done: | |
| 2623 p--; | |
| 2624 | |
| 2625 stringbuffer.writeByte(0); | |
| 2626 | |
| 2627 version (_WIN32) { /// && __DMC__ | |
| 2628 char* save = __locale_decpoint; | |
| 2629 __locale_decpoint = cast(char*)".".ptr; | |
| 2630 } | |
| 2631 t.float80value = strtold(cast(char*)stringbuffer.data, null); | |
| 2632 | |
| 2633 errno = 0; | |
| 2634 switch (*p) | |
| 2635 { | |
| 2636 case 'F': | |
| 2637 case 'f': | |
| 2638 strtof(cast(char*)stringbuffer.data, null); | |
| 2639 result = TOKfloat32v; | |
| 2640 p++; | |
| 2641 break; | |
| 2642 | |
| 2643 default: | |
| 2644 strtod(cast(char*)stringbuffer.data, null); | |
| 2645 result = TOKfloat64v; | |
| 2646 break; | |
| 2647 | |
| 2648 case 'l': | |
| 2649 if (!global.params.useDeprecated) | |
| 2650 error("'l' suffix is deprecated, use 'L' instead"); | |
| 2651 case 'L': | |
| 2652 result = TOKfloat80v; | |
| 2653 p++; | |
| 2654 break; | |
| 2655 } | |
| 2656 if (*p == 'i' || *p == 'I') | |
| 2657 { | |
| 2658 if (!global.params.useDeprecated && *p == 'I') | |
| 2659 error("'I' suffix is deprecated, use 'i' instead"); | |
| 2660 p++; | |
| 2661 switch (result) | |
| 2662 { | |
| 2663 case TOKfloat32v: | |
| 2664 result = TOKimaginary32v; | |
| 2665 break; | |
| 2666 case TOKfloat64v: | |
| 2667 result = TOKimaginary64v; | |
| 2668 break; | |
| 2669 case TOKfloat80v: | |
| 2670 result = TOKimaginary80v; | |
| 2671 break; | |
| 2672 } | |
| 2673 } | |
| 2674 | |
| 2675 version (_WIN32) { ///&& __DMC__ | |
| 2676 __locale_decpoint = save; | |
| 2677 } | |
| 2678 if (errno == ERANGE) | |
| 2679 error("number is not representable"); | |
| 2680 | |
| 2681 return result; | |
| 2682 } | |
| 2683 | |
| 2684 void error(T...)(string format, T t) | |
| 2685 { | |
| 2686 error(this.loc, format, t); | |
| 2687 } | |
| 2688 | |
| 2689 void error(T...)(Loc loc, string format, T t) | |
| 2690 { | |
| 2691 if (mod && !global.gag) | |
| 2692 { | |
| 2693 string p = loc.toChars(); | |
| 2694 if (p.length != 0) | |
| 2695 writef("%s: ", p); | |
| 2696 | |
| 2697 writefln(format, t); | |
| 2698 | |
| 2699 if (global.errors >= 20) // moderate blizzard of cascading messages | |
| 2700 fatal(); | |
| 2701 } | |
| 2702 | |
| 2703 global.errors++; | |
| 2704 } | |
| 2705 | |
| 2706 void pragma_() | |
| 2707 { | |
| 2708 assert(false); | |
| 2709 } | |
| 2710 | |
| 49 | 2711 /******************************************** |
| 2712 * Decode UTF character. | |
| 2713 * Issue error messages for invalid sequences. | |
| 2714 * Return decoded character, advance p to last character in UTF sequence. | |
| 2715 */ | |
| 0 | 2716 uint decodeUTF() |
| 2717 { | |
| 49 | 2718 dchar u; |
| 2719 ubyte c; | |
| 2720 ubyte* s = p; | |
| 2721 size_t len; | |
| 2722 size_t idx; | |
| 2723 string msg; | |
| 2724 | |
| 2725 c = *s; | |
| 2726 assert(c & 0x80); | |
| 2727 | |
| 2728 // Check length of remaining string up to 6 UTF-8 characters | |
| 2729 for (len = 1; len < 6 && s[len]; len++) { | |
| 2730 ; | |
| 2731 } | |
| 2732 | |
| 2733 idx = 0; | |
| 2734 msg = utf_decodeChar(cast(string)s[0..len], &idx, &u); | |
| 2735 p += idx - 1; | |
| 2736 if (msg) | |
| 2737 { | |
| 2738 error("%s", msg); | |
| 2739 } | |
| 2740 return u; | |
| 0 | 2741 } |
| 2742 | |
| 2743 void getDocComment(Token* t, uint lineComment) | |
| 2744 { | |
| 2745 assert(false); | |
| 2746 } | |
| 2747 | |
| 2748 static bool isValidIdentifier(string p) | |
| 2749 { | |
| 2750 if (p.length == 0) { | |
| 2751 return false; | |
| 2752 } | |
| 2753 | |
| 2754 if (p[0] >= '0' && p[0] <= '9') { // beware of isdigit() on signed chars | |
| 2755 return false; | |
| 2756 } | |
| 2757 | |
| 2758 size_t idx = 0; | |
| 2759 while (idx < p.length) | |
| 2760 { | |
| 2761 dchar dc; | |
| 2762 | |
| 2763 if (utf_decodeChar(p, &idx, &dc) !is null) { | |
| 2764 return false; | |
| 2765 } | |
| 2766 | |
| 2767 if (!((dc >= 0x80 && isUniAlpha(dc)) || isalnum(dc) || dc == '_')) { | |
| 2768 return false; | |
| 2769 } | |
| 2770 } | |
| 2771 | |
| 2772 return true; | |
| 2773 } | |
| 2774 | |
| 2775 /// TODO: reimplement based on strings | |
| 2776 static ubyte* combineComments(ubyte* c1, ubyte* c2) | |
| 2777 { | |
| 2778 //printf("Lexer.combineComments('%s', '%s')\n", c1, c2); | |
| 2779 | |
| 2780 ubyte* c = c2; | |
| 2781 | |
| 2782 if (c1) | |
| 2783 { | |
| 2784 c = c1; | |
| 2785 if (c2) | |
| 2786 { | |
| 2787 size_t len1 = strlen(cast(char*)c1); | |
| 2788 size_t len2 = strlen(cast(char*)c2); | |
| 2789 | |
| 2 | 2790 c = cast(ubyte*)GC.malloc(len1 + 1 + len2 + 1); |
| 0 | 2791 memcpy(c, c1, len1); |
| 2792 if (len1 && c1[len1 - 1] != '\n') | |
| 2793 { | |
| 2794 c[len1] = '\n'; | |
| 2795 len1++; | |
| 2796 } | |
| 2797 memcpy(c + len1, c2, len2); | |
| 2798 c[len1 + len2] = 0; | |
| 2799 } | |
| 2800 } | |
| 2801 | |
| 2802 return c; | |
| 2803 } | |
| 2804 } |