Mercurial > projects > ddmd
annotate dmd/Lexer.d @ 135:af1bebfd96a4 dmd2037
dmd 2.038
| author | Eldar Insafutdinov <e.insafutdinov@gmail.com> |
|---|---|
| date | Mon, 13 Sep 2010 22:19:42 +0100 |
| parents | 60bb0fe4563e |
| children | b7b61140701d |
| rev | line source |
|---|---|
| 0 | 1 module dmd.Lexer; |
| 2 | |
| 114 | 3 import dmd.common; |
| 0 | 4 import dmd.StringTable; |
| 5 import dmd.OutBuffer; | |
| 6 import dmd.Token; | |
| 7 import dmd.Loc; | |
| 8 import dmd.Module; | |
| 9 import dmd.Identifier; | |
| 10 import dmd.TOK; | |
| 11 import dmd.Keyword; | |
| 12 import dmd.StringValue; | |
| 13 import dmd.Global; | |
| 14 import dmd.Util; | |
| 15 import dmd.Id; | |
| 16 import dmd.Dchar; | |
| 17 import dmd.Utf; | |
| 18 | |
| 19 import std.stdio : writeln; | |
| 20 | |
| 4 | 21 import core.memory; |
| 2 | 22 |
| 0 | 23 import core.stdc.ctype; |
| 24 import core.stdc.stdlib; | |
| 25 import core.stdc.string; | |
| 26 import core.stdc.stdio; | |
| 27 import core.stdc.time; | |
| 28 import core.stdc.errno; | |
| 29 | |
| 30 enum LS = 0x2028; // UTF line separator | |
| 31 enum PS = 0x2029; // UTF paragraph separator | |
| 32 | |
| 33 extern (C) extern | |
| 34 { | |
| 35 __gshared char* __locale_decpoint; | |
| 36 } | |
| 37 | |
| 38 int isUniAlpha(uint u) | |
| 39 { | |
| 40 assert(false); | |
| 41 } | |
| 42 | |
| 43 class Lexer | |
| 44 { | |
| 45 static StringTable stringtable; | |
| 46 static OutBuffer stringbuffer; | |
| 47 static Token* freelist; | |
| 48 | |
| 49 Loc loc; // for error messages | |
| 50 | |
| 51 ubyte* base; // pointer to start of buffer | |
| 52 ubyte* end; // past end of buffer | |
| 53 ubyte* p; // current character | |
| 54 Token token; | |
| 55 Module mod; | |
| 56 int doDocComment; // collect doc comment information | |
| 57 int anyToken; // !=0 means seen at least one token | |
| 58 int commentToken; // !=0 means comments are TOKcomment's | |
| 59 | |
| 60 static this() | |
| 61 { | |
| 62 stringtable = new StringTable(); | |
| 63 stringbuffer = new OutBuffer(); | |
| 64 } | |
| 65 | |
| 66 static ~this() | |
| 67 { | |
| 34 | 68 //delete stringtable; |
| 0 | 69 } |
| 70 | |
| 71 this(Module mod, ubyte* base, uint begoffset, uint endoffset, int doDocComment, int commentToken) | |
| 72 { | |
| 73 loc = Loc(mod, 1); | |
| 74 | |
| 75 memset(&token,0,token.sizeof); | |
| 76 this.base = base; | |
| 77 this.end = base + endoffset; | |
| 78 p = base + begoffset; | |
| 79 this.mod = mod; | |
| 80 this.doDocComment = doDocComment; | |
| 81 this.anyToken = 0; | |
| 82 this.commentToken = commentToken; | |
| 83 //initKeywords(); | |
| 84 | |
| 85 /* If first line starts with '#!', ignore the line | |
| 86 */ | |
| 87 | |
| 88 if (p[0] == '#' && p[1] =='!') | |
| 89 { | |
| 90 p += 2; | |
| 91 while (1) | |
| 92 { | |
| 93 ubyte c = *p; | |
| 94 switch (c) | |
| 95 { | |
| 96 case '\n': | |
| 97 p++; | |
| 98 break; | |
| 99 | |
| 100 case '\r': | |
| 101 p++; | |
| 102 if (*p == '\n') | |
| 103 p++; | |
| 104 break; | |
| 105 | |
| 106 case 0: | |
| 107 case 0x1A: | |
| 108 break; | |
| 109 | |
| 110 default: | |
| 111 if (c & 0x80) | |
| 112 { | |
| 113 uint u = decodeUTF(); | |
| 114 if (u == PS || u == LS) | |
| 115 break; | |
| 116 } | |
| 117 p++; | |
| 118 continue; | |
| 119 } | |
| 120 break; | |
| 121 } | |
| 122 loc.linnum = 2; | |
| 123 } | |
| 124 } | |
| 125 | |
| 126 version (DMDV2) { | |
| 127 static Keyword[] keywords = | |
| 128 [ | |
| 129 // { "", TOK }, | |
| 130 | |
| 131 { "this", TOK.TOKthis }, | |
| 132 { "super", TOK.TOKsuper }, | |
| 133 { "assert", TOK.TOKassert }, | |
| 134 { "null", TOK.TOKnull }, | |
| 135 { "true", TOK.TOKtrue }, | |
| 136 { "false", TOK.TOKfalse }, | |
| 137 { "cast", TOK.TOKcast }, | |
| 138 { "new", TOK.TOKnew }, | |
| 139 { "delete", TOK.TOKdelete }, | |
| 140 { "throw", TOK.TOKthrow }, | |
| 141 { "module", TOK.TOKmodule }, | |
| 142 { "pragma", TOK.TOKpragma }, | |
| 143 { "typeof", TOK.TOKtypeof }, | |
| 144 { "typeid", TOK.TOKtypeid }, | |
| 145 | |
| 146 { "template", TOK.TOKtemplate }, | |
| 147 | |
| 148 { "void", TOK.TOKvoid }, | |
| 149 { "byte", TOK.TOKint8 }, | |
| 150 { "ubyte", TOK.TOKuns8 }, | |
| 151 { "short", TOK.TOKint16 }, | |
| 152 { "ushort", TOK.TOKuns16 }, | |
| 153 { "int", TOK.TOKint32 }, | |
| 154 { "uint", TOK.TOKuns32 }, | |
| 155 { "long", TOK.TOKint64 }, | |
| 156 { "ulong", TOK.TOKuns64 }, | |
| 157 { "cent", TOK.TOKcent, }, | |
| 158 { "ucent", TOK.TOKucent, }, | |
| 159 { "float", TOK.TOKfloat32 }, | |
| 160 { "double", TOK.TOKfloat64 }, | |
| 161 { "real", TOK.TOKfloat80 }, | |
| 162 | |
| 163 { "bool", TOK.TOKbool }, | |
| 164 { "char", TOK.TOKchar }, | |
| 165 { "wchar", TOK.TOKwchar }, | |
| 166 { "dchar", TOK.TOKdchar }, | |
| 167 | |
| 168 { "ifloat", TOK.TOKimaginary32 }, | |
| 169 { "idouble", TOK.TOKimaginary64 }, | |
| 170 { "ireal", TOK.TOKimaginary80 }, | |
| 171 | |
| 172 { "cfloat", TOK.TOKcomplex32 }, | |
| 173 { "cdouble", TOK.TOKcomplex64 }, | |
| 174 { "creal", TOK.TOKcomplex80 }, | |
| 175 | |
| 176 { "delegate", TOK.TOKdelegate }, | |
| 177 { "function", TOK.TOKfunction }, | |
| 178 | |
| 179 { "is", TOK.TOKis }, | |
| 180 { "if", TOK.TOKif }, | |
| 181 { "else", TOK.TOKelse }, | |
| 182 { "while", TOK.TOKwhile }, | |
| 183 { "for", TOK.TOKfor }, | |
| 184 { "do", TOK.TOKdo }, | |
| 185 { "switch", TOK.TOKswitch }, | |
| 186 { "case", TOK.TOKcase }, | |
| 187 { "default", TOK.TOKdefault }, | |
| 188 { "break", TOK.TOKbreak }, | |
| 189 { "continue", TOK.TOKcontinue }, | |
| 190 { "synchronized", TOK.TOKsynchronized }, | |
| 191 { "return", TOK.TOKreturn }, | |
| 192 { "goto", TOK.TOKgoto }, | |
| 193 { "try", TOK.TOKtry }, | |
| 194 { "catch", TOK.TOKcatch }, | |
| 195 { "finally", TOK.TOKfinally }, | |
| 196 { "with", TOK.TOKwith }, | |
| 197 { "asm", TOK.TOKasm }, | |
| 198 { "foreach", TOK.TOKforeach }, | |
| 199 { "foreach_reverse", TOK.TOKforeach_reverse }, | |
| 200 { "scope", TOK.TOKscope }, | |
| 201 | |
| 202 { "struct", TOK.TOKstruct }, | |
| 203 { "class", TOK.TOKclass }, | |
| 204 { "interface", TOK.TOKinterface }, | |
| 205 { "union", TOK.TOKunion }, | |
| 206 { "enum", TOK.TOKenum }, | |
| 207 { "import", TOK.TOKimport }, | |
| 208 { "mixin", TOK.TOKmixin }, | |
| 209 { "static", TOK.TOKstatic }, | |
| 210 { "final", TOK.TOKfinal }, | |
| 211 { "const", TOK.TOKconst }, | |
| 212 { "typedef", TOK.TOKtypedef }, | |
| 213 { "alias", TOK.TOKalias }, | |
| 214 { "override", TOK.TOKoverride }, | |
| 215 { "abstract", TOK.TOKabstract }, | |
| 216 { "volatile", TOK.TOKvolatile }, | |
| 217 { "debug", TOK.TOKdebug }, | |
| 218 { "deprecated", TOK.TOKdeprecated }, | |
| 219 { "in", TOK.TOKin }, | |
| 220 { "out", TOK.TOKout }, | |
| 221 { "inout", TOK.TOKinout }, | |
| 222 { "lazy", TOK.TOKlazy }, | |
| 223 { "auto", TOK.TOKauto }, | |
| 224 | |
| 225 { "align", TOK.TOKalign }, | |
| 226 { "extern", TOK.TOKextern }, | |
| 227 { "private", TOK.TOKprivate }, | |
| 228 { "package", TOK.TOKpackage }, | |
| 229 { "protected", TOK.TOKprotected }, | |
| 230 { "public", TOK.TOKpublic }, | |
| 231 { "export", TOK.TOKexport }, | |
| 232 | |
| 233 { "body", TOK.TOKbody }, | |
| 234 { "invariant", TOK.TOKinvariant }, | |
| 235 { "unittest", TOK.TOKunittest }, | |
| 236 { "version", TOK.TOKversion }, | |
| 237 //{ "manifest", TOK.TOKmanifest }, | |
| 238 | |
| 239 // Added after 1.0 | |
| 240 { "ref", TOK.TOKref }, | |
| 241 { "macro", TOK.TOKmacro }, | |
| 242 { "pure", TOK.TOKpure }, | |
| 243 { "nothrow", TOK.TOKnothrow }, | |
| 244 { "__thread", TOK.TOKtls }, | |
| 245 { "__gshared", TOK.TOKgshared }, | |
| 246 { "__traits", TOK.TOKtraits }, | |
| 247 { "__overloadset", TOK.TOKoverloadset }, | |
| 248 { "__FILE__", TOK.TOKfile }, | |
| 249 { "__LINE__", TOK.TOKline }, | |
| 250 { "shared", TOK.TOKshared }, | |
| 251 { "immutable", TOK.TOKimmutable }, | |
| 252 ]; | |
| 253 } else { | |
| 254 static Keyword[] keywords = | |
| 255 [ | |
| 256 // { "", TOK }, | |
| 257 | |
| 258 { "this", TOK.TOKthis }, | |
| 259 { "super", TOK.TOKsuper }, | |
| 260 { "assert", TOK.TOKassert }, | |
| 261 { "null", TOK.TOKnull }, | |
| 262 { "true", TOK.TOKtrue }, | |
| 263 { "false", TOK.TOKfalse }, | |
| 264 { "cast", TOK.TOKcast }, | |
| 265 { "new", TOK.TOKnew }, | |
| 266 { "delete", TOK.TOKdelete }, | |
| 267 { "throw", TOK.TOKthrow }, | |
| 268 { "module", TOK.TOKmodule }, | |
| 269 { "pragma", TOK.TOKpragma }, | |
| 270 { "typeof", TOK.TOKtypeof }, | |
| 271 { "typeid", TOK.TOKtypeid }, | |
| 272 | |
| 273 { "template", TOK.TOKtemplate }, | |
| 274 | |
| 275 { "void", TOK.TOKvoid }, | |
| 276 { "byte", TOK.TOKint8 }, | |
| 277 { "ubyte", TOK.TOKuns8 }, | |
| 278 { "short", TOK.TOKint16 }, | |
| 279 { "ushort", TOK.TOKuns16 }, | |
| 280 { "int", TOK.TOKint32 }, | |
| 281 { "uint", TOK.TOKuns32 }, | |
| 282 { "long", TOK.TOKint64 }, | |
| 283 { "ulong", TOK.TOKuns64 }, | |
| 284 { "cent", TOK.TOKcent, }, | |
| 285 { "ucent", TOK.TOKucent, }, | |
| 286 { "float", TOK.TOKfloat32 }, | |
| 287 { "double", TOK.TOKfloat64 }, | |
| 288 { "real", TOK.TOKfloat80 }, | |
| 289 | |
| 290 { "bool", TOK.TOKbool }, | |
| 291 { "char", TOK.TOKchar }, | |
| 292 { "wchar", TOK.TOKwchar }, | |
| 293 { "dchar", TOK.TOKdchar }, | |
| 294 | |
| 295 { "ifloat", TOK.TOKimaginary32 }, | |
| 296 { "idouble", TOK.TOKimaginary64 }, | |
| 297 { "ireal", TOK.TOKimaginary80 }, | |
| 298 | |
| 299 { "cfloat", TOK.TOKcomplex32 }, | |
| 300 { "cdouble", TOK.TOKcomplex64 }, | |
| 301 { "creal", TOK.TOKcomplex80 }, | |
| 302 | |
| 303 { "delegate", TOK.TOKdelegate }, | |
| 304 { "function", TOK.TOKfunction }, | |
| 305 | |
| 306 { "is", TOK.TOKis }, | |
| 307 { "if", TOK.TOKif }, | |
| 308 { "else", TOK.TOKelse }, | |
| 309 { "while", TOK.TOKwhile }, | |
| 310 { "for", TOK.TOKfor }, | |
| 311 { "do", TOK.TOKdo }, | |
| 312 { "switch", TOK.TOKswitch }, | |
| 313 { "case", TOK.TOKcase }, | |
| 314 { "default", TOK.TOKdefault }, | |
| 315 { "break", TOK.TOKbreak }, | |
| 316 { "continue", TOK.TOKcontinue }, | |
| 317 { "synchronized", TOK.TOKsynchronized }, | |
| 318 { "return", TOK.TOKreturn }, | |
| 319 { "goto", TOK.TOKgoto }, | |
| 320 { "try", TOK.TOKtry }, | |
| 321 { "catch", TOK.TOKcatch }, | |
| 322 { "finally", TOK.TOKfinally }, | |
| 323 { "with", TOK.TOKwith }, | |
| 324 { "asm", TOK.TOKasm }, | |
| 325 { "foreach", TOK.TOKforeach }, | |
| 326 { "foreach_reverse", TOK.TOKforeach_reverse }, | |
| 327 { "scope", TOK.TOKscope }, | |
| 328 | |
| 329 { "struct", TOK.TOKstruct }, | |
| 330 { "class", TOK.TOKclass }, | |
| 331 { "interface", TOK.TOKinterface }, | |
| 332 { "union", TOK.TOKunion }, | |
| 333 { "enum", TOK.TOKenum }, | |
| 334 { "import", TOK.TOKimport }, | |
| 335 { "mixin", TOK.TOKmixin }, | |
| 336 { "static", TOK.TOKstatic }, | |
| 337 { "final", TOK.TOKfinal }, | |
| 338 { "const", TOK.TOKconst }, | |
| 339 { "typedef", TOK.TOKtypedef }, | |
| 340 { "alias", TOK.TOKalias }, | |
| 341 { "override", TOK.TOKoverride }, | |
| 342 { "abstract", TOK.TOKabstract }, | |
| 343 { "volatile", TOK.TOKvolatile }, | |
| 344 { "debug", TOK.TOKdebug }, | |
| 345 { "deprecated", TOK.TOKdeprecated }, | |
| 346 { "in", TOK.TOKin }, | |
| 347 { "out", TOK.TOKout }, | |
| 348 { "inout", TOK.TOKinout }, | |
| 349 { "lazy", TOK.TOKlazy }, | |
| 350 { "auto", TOK.TOKauto }, | |
| 351 | |
| 352 { "align", TOK.TOKalign }, | |
| 353 { "extern", TOK.TOKextern }, | |
| 354 { "private", TOK.TOKprivate }, | |
| 355 { "package", TOK.TOKpackage }, | |
| 356 { "protected", TOK.TOKprotected }, | |
| 357 { "public", TOK.TOKpublic }, | |
| 358 { "export", TOK.TOKexport }, | |
| 359 | |
| 360 { "body", TOK.TOKbody }, | |
| 361 { "invariant", TOK.TOKinvariant }, | |
| 362 { "unittest", TOK.TOKunittest }, | |
| 363 { "version", TOK.TOKversion }, | |
| 364 //{ "manifest", TOK.TOKmanifest }, | |
| 365 | |
| 366 // Added after 1.0 | |
| 367 { "ref", TOK.TOKref }, | |
| 368 { "macro", TOK.TOKmacro }, | |
| 369 ]; | |
| 370 } | |
| 371 | |
| 372 static ubyte cmtable[256]; | |
| 373 enum CMoctal = 0x1; | |
| 374 enum CMhex = 0x2; | |
| 375 enum CMidchar = 0x4; | |
| 376 | |
| 377 ubyte isoctal (ubyte c) { return cmtable[c] & CMoctal; } | |
| 378 ubyte ishex (ubyte c) { return cmtable[c] & CMhex; } | |
| 379 ubyte isidchar(ubyte c) { return cmtable[c] & CMidchar; } | |
| 380 | |
| 381 static void cmtable_init() | |
| 382 { | |
| 383 for (uint c = 0; c < cmtable.length; c++) | |
| 384 { | |
| 385 if ('0' <= c && c <= '7') | |
| 386 cmtable[c] |= CMoctal; | |
| 387 if (isdigit(c) || ('a' <= c && c <= 'f') || ('A' <= c && c <= 'F')) | |
| 388 cmtable[c] |= CMhex; | |
| 389 if (isalnum(c) || c == '_') | |
| 390 cmtable[c] |= CMidchar; | |
| 391 } | |
| 392 } | |
| 393 | |
| 394 static void initKeywords() | |
| 395 { | |
| 396 uint nkeywords = keywords.length; | |
| 397 | |
| 398 if (global.params.Dversion == 1) | |
| 399 nkeywords -= 2; | |
| 400 | |
| 401 cmtable_init(); | |
| 402 | |
| 403 for (uint u = 0; u < nkeywords; u++) | |
| 404 { | |
| 34 | 405 //printf("keyword[%d] = '%.*s'\n",u, keywords[u].name); |
| 0 | 406 string s = keywords[u].name; |
| 407 TOK v = keywords[u].value; | |
| 408 StringValue* sv = stringtable.insert(s); | |
| 409 sv.ptrvalue = cast(void*) new Identifier(sv.lstring.string_, v); | |
| 410 | |
| 411 //printf("tochars[%d] = '%s'\n",v, s); | |
| 412 Token.tochars[v] = s; | |
| 413 } | |
| 414 | |
| 415 Token.tochars[TOK.TOKeof] = "EOF"; | |
| 416 Token.tochars[TOK.TOKlcurly] = "{"; | |
| 417 Token.tochars[TOK.TOKrcurly] = "}"; | |
| 418 Token.tochars[TOK.TOKlparen] = "("; | |
| 419 Token.tochars[TOK.TOKrparen] = ")"; | |
| 420 Token.tochars[TOK.TOKlbracket] = "["; | |
| 421 Token.tochars[TOK.TOKrbracket] = "]"; | |
| 422 Token.tochars[TOK.TOKsemicolon] = ";"; | |
| 423 Token.tochars[TOK.TOKcolon] = ":"; | |
| 424 Token.tochars[TOK.TOKcomma] = ","; | |
| 425 Token.tochars[TOK.TOKdot] = "."; | |
| 426 Token.tochars[TOK.TOKxor] = "^"; | |
| 427 Token.tochars[TOK.TOKxorass] = "^="; | |
| 428 Token.tochars[TOK.TOKassign] = "="; | |
| 429 Token.tochars[TOK.TOKconstruct] = "="; | |
| 430 version (DMDV2) { | |
| 431 Token.tochars[TOK.TOKblit] = "="; | |
| 432 } | |
| 433 Token.tochars[TOK.TOKlt] = "<"; | |
| 434 Token.tochars[TOK.TOKgt] = ">"; | |
| 435 Token.tochars[TOK.TOKle] = "<="; | |
| 436 Token.tochars[TOK.TOKge] = ">="; | |
| 437 Token.tochars[TOK.TOKequal] = "=="; | |
| 438 Token.tochars[TOK.TOKnotequal] = "!="; | |
| 439 Token.tochars[TOK.TOKnotidentity] = "!is"; | |
| 440 Token.tochars[TOK.TOKtobool] = "!!"; | |
| 441 | |
| 442 Token.tochars[TOK.TOKunord] = "!<>="; | |
| 443 Token.tochars[TOK.TOKue] = "!<>"; | |
| 444 Token.tochars[TOK.TOKlg] = "<>"; | |
| 445 Token.tochars[TOK.TOKleg] = "<>="; | |
| 446 Token.tochars[TOK.TOKule] = "!>"; | |
| 447 Token.tochars[TOK.TOKul] = "!>="; | |
| 448 Token.tochars[TOK.TOKuge] = "!<"; | |
| 449 Token.tochars[TOK.TOKug] = "!<="; | |
| 450 | |
| 451 Token.tochars[TOK.TOKnot] = "!"; | |
| 452 Token.tochars[TOK.TOKtobool] = "!!"; | |
| 453 Token.tochars[TOK.TOKshl] = "<<"; | |
| 454 Token.tochars[TOK.TOKshr] = ">>"; | |
| 455 Token.tochars[TOK.TOKushr] = ">>>"; | |
| 456 Token.tochars[TOK.TOKadd] = "+"; | |
| 457 Token.tochars[TOK.TOKmin] = "-"; | |
| 458 Token.tochars[TOK.TOKmul] = "*"; | |
| 459 Token.tochars[TOK.TOKdiv] = "/"; | |
| 460 Token.tochars[TOK.TOKmod] = "%"; | |
| 461 Token.tochars[TOK.TOKslice] = ".."; | |
| 462 Token.tochars[TOK.TOKdotdotdot] = "..."; | |
| 463 Token.tochars[TOK.TOKand] = "&"; | |
| 464 Token.tochars[TOK.TOKandand] = "&&"; | |
| 465 Token.tochars[TOK.TOKor] = "|"; | |
| 466 Token.tochars[TOK.TOKoror] = "||"; | |
| 467 Token.tochars[TOK.TOKarray] = "[]"; | |
| 468 Token.tochars[TOK.TOKindex] = "[i]"; | |
| 469 Token.tochars[TOK.TOKaddress] = "&"; | |
| 470 Token.tochars[TOK.TOKstar] = "*"; | |
| 471 Token.tochars[TOK.TOKtilde] = "~"; | |
| 472 Token.tochars[TOK.TOKdollar] = "$"; | |
| 473 Token.tochars[TOK.TOKcast] = "cast"; | |
| 474 Token.tochars[TOK.TOKplusplus] = "++"; | |
| 475 Token.tochars[TOK.TOKminusminus] = "--"; | |
| 476 Token.tochars[TOK.TOKtype] = "type"; | |
| 477 Token.tochars[TOK.TOKquestion] = "?"; | |
| 478 Token.tochars[TOK.TOKneg] = "-"; | |
| 479 Token.tochars[TOK.TOKuadd] = "+"; | |
| 480 Token.tochars[TOK.TOKvar] = "var"; | |
| 481 Token.tochars[TOK.TOKaddass] = "+="; | |
| 482 Token.tochars[TOK.TOKminass] = "-="; | |
| 483 Token.tochars[TOK.TOKmulass] = "*="; | |
| 484 Token.tochars[TOK.TOKdivass] = "/="; | |
| 485 Token.tochars[TOK.TOKmodass] = "%="; | |
| 486 Token.tochars[TOK.TOKshlass] = "<<="; | |
| 487 Token.tochars[TOK.TOKshrass] = ">>="; | |
| 488 Token.tochars[TOK.TOKushrass] = ">>>="; | |
| 489 Token.tochars[TOK.TOKandass] = "&="; | |
| 490 Token.tochars[TOK.TOKorass] = "|="; | |
| 491 Token.tochars[TOK.TOKcatass] = "~="; | |
| 492 Token.tochars[TOK.TOKcat] = "~"; | |
| 493 Token.tochars[TOK.TOKcall] = "call"; | |
| 494 Token.tochars[TOK.TOKidentity] = "is"; | |
| 495 Token.tochars[TOK.TOKnotidentity] = "!is"; | |
| 496 | |
| 497 Token.tochars[TOK.TOKorass] = "|="; | |
| 498 Token.tochars[TOK.TOKidentifier] = "identifier"; | |
| 499 Token.tochars[TOK.TOKat] = "@"; | |
|
130
60bb0fe4563e
dmdfe 2.037 first main iteration
Eldar Insafutdinov <e.insafutdinov@gmail.com>
parents:
114
diff
changeset
|
500 Token.tochars[TOK.TOKpow] = "^^"; |
| 135 | 501 Token.tochars[TOK.TOKpowass] = "^^="; |
|
130
60bb0fe4563e
dmdfe 2.037 first main iteration
Eldar Insafutdinov <e.insafutdinov@gmail.com>
parents:
114
diff
changeset
|
502 |
| 0 | 503 // For debugging |
| 73 | 504 Token.tochars[TOKerror] = "error"; |
| 0 | 505 Token.tochars[TOK.TOKdotexp] = "dotexp"; |
| 506 Token.tochars[TOK.TOKdotti] = "dotti"; | |
| 507 Token.tochars[TOK.TOKdotvar] = "dotvar"; | |
| 508 Token.tochars[TOK.TOKdottype] = "dottype"; | |
| 509 Token.tochars[TOK.TOKsymoff] = "symoff"; | |
| 510 Token.tochars[TOK.TOKarraylength] = "arraylength"; | |
| 511 Token.tochars[TOK.TOKarrayliteral] = "arrayliteral"; | |
| 512 Token.tochars[TOK.TOKassocarrayliteral] = "assocarrayliteral"; | |
| 513 Token.tochars[TOK.TOKstructliteral] = "structliteral"; | |
| 514 Token.tochars[TOK.TOKstring] = "string"; | |
| 515 Token.tochars[TOK.TOKdsymbol] = "symbol"; | |
| 516 Token.tochars[TOK.TOKtuple] = "tuple"; | |
| 517 Token.tochars[TOK.TOKdeclaration] = "declaration"; | |
| 518 Token.tochars[TOK.TOKdottd] = "dottd"; | |
| 519 Token.tochars[TOK.TOKon_scope_exit] = "scope(exit)"; | |
| 520 Token.tochars[TOK.TOKon_scope_success] = "scope(success)"; | |
| 521 Token.tochars[TOK.TOKon_scope_failure] = "scope(failure)"; | |
| 522 } | |
| 523 | |
| 524 static Identifier idPool(string s) | |
| 525 { | |
| 526 StringValue* sv = stringtable.update(s); | |
| 527 Identifier id = cast(Identifier) sv.ptrvalue; | |
| 528 if (id is null) | |
| 529 { | |
| 530 id = new Identifier(sv.lstring.string_, TOK.TOKidentifier); | |
| 531 sv.ptrvalue = cast(void*)id; | |
| 532 } | |
| 533 | |
| 534 return id; | |
| 535 } | |
| 536 | |
| 537 static Identifier uniqueId(string s) | |
| 538 { | |
| 539 static int num; | |
| 540 return uniqueId(s, ++num); | |
| 541 } | |
| 542 | |
| 543 /********************************************* | |
| 544 * Create a unique identifier using the prefix s. | |
| 545 */ | |
| 546 static Identifier uniqueId(string s, int num) | |
| 547 { | |
| 548 char buffer[32]; | |
| 549 size_t slen = s.length; | |
| 550 | |
| 551 assert(slen + num.sizeof * 3 + 1 <= buffer.sizeof); | |
| 552 int len = sprintf(buffer.ptr, "%.*s%d", s, num); | |
| 553 | |
| 554 return idPool(buffer[0..len].idup); | |
| 555 } | |
| 556 | |
| 557 TOK nextToken() | |
| 558 { | |
| 559 Token *t; | |
| 560 | |
| 561 if (token.next) | |
| 562 { | |
| 563 t = token.next; | |
| 564 memcpy(&token, t, Token.sizeof); | |
| 565 t.next = freelist; | |
| 566 freelist = t; | |
| 567 } | |
| 568 else | |
| 569 { | |
| 570 scan(&token); | |
| 571 } | |
| 572 | |
| 573 //token.print(); | |
| 574 return token.value; | |
| 575 } | |
| 576 | |
| 577 /*********************** | |
| 578 * Look ahead at next token's value. | |
| 579 */ | |
| 580 TOK peekNext() | |
| 581 { | |
| 582 return peek(&token).value; | |
| 583 } | |
| 584 | |
| 585 TOK peekNext2() | |
| 586 { | |
| 587 assert(false); | |
| 588 } | |
| 589 | |
| 590 void scan(Token* t) | |
| 591 { | |
| 592 uint lastLine = loc.linnum; | |
| 593 uint linnum; | |
| 594 | |
| 595 t.blockComment = null; | |
| 596 t.lineComment = null; | |
| 597 while (1) | |
| 598 { | |
| 599 t.ptr = p; | |
| 600 //printf("p = %p, *p = '%c'\n",p,*p); | |
| 601 switch (*p) | |
| 602 { | |
| 603 case 0: | |
| 604 case 0x1A: | |
| 605 t.value = TOK.TOKeof; // end of file | |
| 606 return; | |
| 607 | |
| 608 case ' ': | |
| 609 case '\t': | |
| 610 case '\v': | |
| 611 case '\f': | |
| 612 p++; | |
| 613 continue; // skip white space | |
| 614 | |
| 615 case '\r': | |
| 616 p++; | |
| 617 if (*p != '\n') // if CR stands by itself | |
| 618 loc.linnum++; | |
| 619 continue; // skip white space | |
| 620 | |
| 621 case '\n': | |
| 622 p++; | |
| 623 loc.linnum++; | |
| 624 continue; // skip white space | |
| 625 | |
| 626 case '0': case '1': case '2': case '3': case '4': | |
| 627 case '5': case '6': case '7': case '8': case '9': | |
| 628 t.value = number(t); | |
| 629 return; | |
| 630 | |
| 631 version (CSTRINGS) { | |
| 632 case '\'': | |
| 633 t.value = charConstant(t, 0); | |
| 634 return; | |
| 635 | |
| 636 case '"': | |
| 637 t.value = stringConstant(t,0); | |
| 638 return; | |
| 639 | |
| 640 case 'l': | |
| 641 case 'L': | |
| 642 if (p[1] == '\'') | |
| 643 { | |
| 644 p++; | |
| 645 t.value = charConstant(t, 1); | |
| 646 return; | |
| 647 } | |
| 648 else if (p[1] == '"') | |
| 649 { | |
| 650 p++; | |
| 651 t.value = stringConstant(t, 1); | |
| 652 return; | |
| 653 } | |
| 654 } else { | |
| 655 case '\'': | |
| 656 t.value = charConstant(t,0); | |
| 657 return; | |
| 658 | |
| 659 case 'r': | |
| 660 if (p[1] != '"') | |
| 661 goto case_ident; | |
| 662 p++; | |
| 663 case '`': | |
| 664 t.value = wysiwygStringConstant(t, *p); | |
| 665 return; | |
| 666 | |
| 667 case 'x': | |
| 668 if (p[1] != '"') | |
| 669 goto case_ident; | |
| 670 p++; | |
| 671 t.value = hexStringConstant(t); | |
| 672 return; | |
| 673 | |
| 674 version (DMDV2) { | |
| 675 case 'q': | |
| 676 if (p[1] == '"') | |
| 677 { | |
| 678 p++; | |
| 679 t.value = delimitedStringConstant(t); | |
| 680 return; | |
| 681 } | |
| 682 else if (p[1] == '{') | |
| 683 { | |
| 684 p++; | |
| 685 t.value = tokenStringConstant(t); | |
| 686 return; | |
| 687 } | |
| 688 else | |
| 689 goto case_ident; | |
| 690 } | |
| 691 | |
| 692 case '"': | |
| 693 t.value = escapeStringConstant(t,0); | |
| 694 return; | |
| 695 version (TEXTUAL_ASSEMBLY_OUT) { | |
| 696 } else { | |
| 697 case '\\': // escaped string literal | |
| 698 { uint c; | |
| 699 ubyte* pstart = p; | |
| 700 | |
| 701 stringbuffer.reset(); | |
| 702 do | |
| 703 { | |
| 704 p++; | |
| 705 switch (*p) | |
| 706 { | |
| 707 case 'u': | |
| 708 case 'U': | |
| 709 case '&': | |
| 710 c = escapeSequence(); | |
| 711 stringbuffer.writeUTF8(c); | |
| 712 break; | |
| 713 | |
| 714 default: | |
| 715 c = escapeSequence(); | |
| 716 stringbuffer.writeByte(c); | |
| 717 break; | |
| 718 } | |
| 719 } while (*p == '\\'); | |
| 720 t.len = stringbuffer.offset; | |
| 721 stringbuffer.writeByte(0); | |
| 2 | 722 char* cc = cast(char*)GC.malloc(stringbuffer.offset); |
| 0 | 723 memcpy(cc, stringbuffer.data, stringbuffer.offset); |
| 724 t.ustring = cc; | |
| 725 t.postfix = 0; | |
| 726 t.value = TOK.TOKstring; | |
| 727 if (!global.params.useDeprecated) | |
| 728 error("Escape String literal %.*s is deprecated, use double quoted string literal \"%.*s\" instead", p - pstart, pstart, p - pstart, pstart); | |
| 729 return; | |
| 730 } | |
| 731 } | |
| 732 case 'l': | |
| 733 case 'L': | |
| 734 } | |
| 735 case 'a': case 'b': case 'c': case 'd': case 'e': | |
| 736 case 'f': case 'g': case 'h': case 'i': case 'j': | |
| 737 case 'k': case 'm': case 'n': case 'o': | |
| 738 version (DMDV2) { | |
| 739 case 'p': /*case 'q': case 'r':*/ case 's': case 't': | |
| 740 } else { | |
| 741 case 'p': case 'q': /*case 'r':*/ case 's': case 't': | |
| 742 } | |
| 743 case 'u': case 'v': case 'w': /*case 'x':*/ case 'y': | |
| 744 case 'z': | |
| 745 case 'A': case 'B': case 'C': case 'D': case 'E': | |
| 746 case 'F': case 'G': case 'H': case 'I': case 'J': | |
| 747 case 'K': case 'M': case 'N': case 'O': | |
| 748 case 'P': case 'Q': case 'R': case 'S': case 'T': | |
| 749 case 'U': case 'V': case 'W': case 'X': case 'Y': | |
| 750 case 'Z': | |
| 751 case '_': | |
| 752 case_ident: | |
| 135 | 753 { |
| 754 ubyte c; | |
| 0 | 755 |
| 135 | 756 while (1) |
| 757 { | |
| 758 c = *++p; | |
| 759 if (isidchar(c)) | |
| 760 continue; | |
| 761 else if (c & 0x80) | |
| 762 { | |
| 763 ubyte *s = p; | |
| 764 uint u = decodeUTF(); | |
| 765 if (isUniAlpha(u)) | |
| 766 continue; | |
| 767 error("char 0x%04x not allowed in identifier", u); | |
| 768 p = s; | |
| 769 } | |
| 770 break; | |
| 771 } | |
| 772 | |
| 773 StringValue *sv = stringtable.update((cast(immutable(char)*)t.ptr)[0.. p - t.ptr]); | |
| 774 Identifier id = cast(Identifier) sv.ptrvalue; | |
| 775 | |
| 0 | 776 if (id is null) |
| 777 { id = new Identifier(sv.lstring.string_, TOK.TOKidentifier); | |
| 778 sv.ptrvalue = cast(void*)id; | |
| 779 } | |
| 780 t.ident = id; | |
| 781 t.value = cast(TOK) id.value; | |
| 782 anyToken = 1; | |
| 783 if (*t.ptr == '_') // if special identifier token | |
| 784 { | |
| 785 static char date[11+1]; | |
| 786 static char time[8+1]; | |
| 787 static char timestamp[24+1]; | |
| 788 | |
| 789 if (!date[0]) // lazy evaluation | |
| 790 { time_t tm; | |
| 791 char *p; | |
| 792 | |
| 793 .time(&tm); | |
| 794 p = ctime(&tm); | |
| 795 assert(p); | |
| 796 sprintf(date.ptr, "%.6s %.4s", p + 4, p + 20); | |
| 797 sprintf(time.ptr, "%.8s", p + 11); | |
| 798 sprintf(timestamp.ptr, "%.24s", p); | |
| 799 } | |
| 800 | |
| 801 ///version (DMDV1) { | |
| 802 /// if (mod && id == Id.FILE) | |
| 803 /// { | |
| 804 /// t.ustring = cast(ubyte*)(loc.filename ? loc.filename : mod.ident.toChars()); | |
| 805 /// goto Lstr; | |
| 806 /// } | |
| 807 /// else if (mod && id == Id.LINE) | |
| 808 /// { | |
| 809 /// t.value = TOK.TOKint64v; | |
| 810 /// t.uns64value = loc.linnum; | |
| 811 /// } | |
| 812 /// else | |
| 813 ///} | |
| 814 if (id == Id.DATE) | |
| 815 { | |
| 816 t.ustring = date.ptr; | |
| 817 goto Lstr; | |
| 818 } | |
| 819 else if (id == Id.TIME) | |
| 820 { | |
| 821 t.ustring = time.ptr; | |
| 822 goto Lstr; | |
| 823 } | |
| 824 else if (id == Id.VENDOR) | |
| 825 { | |
| 826 t.ustring = "Digital Mars D".ptr; | |
| 827 goto Lstr; | |
| 828 } | |
| 829 else if (id == Id.TIMESTAMP) | |
| 830 { | |
| 831 t.ustring = timestamp.ptr; | |
| 832 Lstr: | |
| 833 t.value = TOK.TOKstring; | |
| 834 Llen: | |
| 835 t.postfix = 0; | |
| 836 t.len = strlen(cast(char*)t.ustring); | |
| 837 } | |
| 838 else if (id == Id.VERSIONX) | |
| 839 { | |
| 840 uint major = 0; | |
| 841 uint minor = 0; | |
| 842 | |
| 843 foreach (char cc; global.version_[1..$]) | |
| 844 { | |
| 845 if (isdigit(cc)) | |
| 846 minor = minor * 10 + cc - '0'; | |
| 847 else if (cc == '.') | |
| 848 { | |
| 849 major = minor; | |
| 850 minor = 0; | |
| 851 } | |
| 852 else | |
| 853 break; | |
| 854 } | |
| 855 t.value = TOK.TOKint64v; | |
| 856 t.uns64value = major * 1000 + minor; | |
| 857 } | |
| 858 ///version (DMDV2) { | |
| 859 else if (id == Id.EOFX) | |
| 860 { | |
| 861 t.value = TOK.TOKeof; | |
| 862 // Advance scanner to end of file | |
| 863 while (!(*p == 0 || *p == 0x1A)) | |
| 864 p++; | |
| 865 } | |
| 866 ///} | |
| 867 } | |
| 868 //printf("t.value = %d\n",t.value); | |
| 869 return; | |
| 870 } | |
| 871 | |
| 872 case '/': | |
| 873 p++; | |
| 874 switch (*p) | |
| 875 { | |
| 876 case '=': | |
| 877 p++; | |
| 878 t.value = TOK.TOKdivass; | |
| 879 return; | |
| 880 | |
| 881 case '*': | |
| 882 p++; | |
| 883 linnum = loc.linnum; | |
| 884 while (1) | |
| 885 { | |
| 886 while (1) | |
| 887 { | |
| 888 ubyte c = *p; | |
| 889 switch (c) | |
| 890 { | |
| 891 case '/': | |
| 892 break; | |
| 893 | |
| 894 case '\n': | |
| 895 loc.linnum++; | |
| 896 p++; | |
| 897 continue; | |
| 898 | |
| 899 case '\r': | |
| 900 p++; | |
| 901 if (*p != '\n') | |
| 902 loc.linnum++; | |
| 903 continue; | |
| 904 | |
| 905 case 0: | |
| 906 case 0x1A: | |
| 907 error("unterminated /* */ comment"); | |
| 908 p = end; | |
| 909 t.value = TOK.TOKeof; | |
| 910 return; | |
| 911 | |
| 912 default: | |
| 913 if (c & 0x80) | |
| 914 { uint u = decodeUTF(); | |
| 915 if (u == PS || u == LS) | |
| 916 loc.linnum++; | |
| 917 } | |
| 918 p++; | |
| 919 continue; | |
| 920 } | |
| 921 break; | |
| 922 } | |
| 923 p++; | |
| 924 if (p[-2] == '*' && p - 3 != t.ptr) | |
| 925 break; | |
| 926 } | |
| 927 if (commentToken) | |
| 928 { | |
| 929 t.value = TOK.TOKcomment; | |
| 930 return; | |
| 931 } | |
| 932 else if (doDocComment && t.ptr[2] == '*' && p - 4 != t.ptr) | |
| 933 { // if /** but not /**/ | |
| 934 getDocComment(t, lastLine == linnum); | |
| 935 } | |
| 936 continue; | |
| 937 | |
| 938 case '/': // do // style comments | |
| 939 linnum = loc.linnum; | |
| 940 while (1) | |
| 941 { ubyte c = *++p; | |
| 942 switch (c) | |
| 943 { | |
| 944 case '\n': | |
| 945 break; | |
| 946 | |
| 947 case '\r': | |
| 948 if (p[1] == '\n') | |
| 949 p++; | |
| 950 break; | |
| 951 | |
| 952 case 0: | |
| 953 case 0x1A: | |
| 954 if (commentToken) | |
| 955 { | |
| 956 p = end; | |
| 957 t.value = TOK.TOKcomment; | |
| 958 return; | |
| 959 } | |
| 960 if (doDocComment && t.ptr[2] == '/') | |
| 961 getDocComment(t, lastLine == linnum); | |
| 962 p = end; | |
| 963 t.value = TOK.TOKeof; | |
| 964 return; | |
| 965 | |
| 966 default: | |
| 967 if (c & 0x80) | |
| 968 { uint u = decodeUTF(); | |
| 969 if (u == PS || u == LS) | |
| 970 break; | |
| 971 } | |
| 972 continue; | |
| 973 } | |
| 974 break; | |
| 975 } | |
| 976 | |
| 977 if (commentToken) | |
| 978 { | |
| 979 p++; | |
| 980 loc.linnum++; | |
| 981 t.value = TOK.TOKcomment; | |
| 982 return; | |
| 983 } | |
| 984 if (doDocComment && t.ptr[2] == '/') | |
| 985 getDocComment(t, lastLine == linnum); | |
| 986 | |
| 987 p++; | |
| 988 loc.linnum++; | |
| 989 continue; | |
| 990 | |
| 991 case '+': | |
| 992 { | |
| 993 int nest; | |
| 994 | |
| 995 linnum = loc.linnum; | |
| 996 p++; | |
| 997 nest = 1; | |
| 998 while (1) | |
| 999 { ubyte c = *p; | |
| 1000 switch (c) | |
| 1001 { | |
| 1002 case '/': | |
| 1003 p++; | |
| 1004 if (*p == '+') | |
| 1005 { | |
| 1006 p++; | |
| 1007 nest++; | |
| 1008 } | |
| 1009 continue; | |
| 1010 | |
| 1011 case '+': | |
| 1012 p++; | |
| 1013 if (*p == '/') | |
| 1014 { | |
| 1015 p++; | |
| 1016 if (--nest == 0) | |
| 1017 break; | |
| 1018 } | |
| 1019 continue; | |
| 1020 | |
| 1021 case '\r': | |
| 1022 p++; | |
| 1023 if (*p != '\n') | |
| 1024 loc.linnum++; | |
| 1025 continue; | |
| 1026 | |
| 1027 case '\n': | |
| 1028 loc.linnum++; | |
| 1029 p++; | |
| 1030 continue; | |
| 1031 | |
| 1032 case 0: | |
| 1033 case 0x1A: | |
| 1034 error("unterminated /+ +/ comment"); | |
| 1035 p = end; | |
| 1036 t.value = TOK.TOKeof; | |
| 1037 return; | |
| 1038 | |
| 1039 default: | |
| 1040 if (c & 0x80) | |
| 1041 { uint u = decodeUTF(); | |
| 1042 if (u == PS || u == LS) | |
| 1043 loc.linnum++; | |
| 1044 } | |
| 1045 p++; | |
| 1046 continue; | |
| 1047 } | |
| 1048 break; | |
| 1049 } | |
| 1050 if (commentToken) | |
| 1051 { | |
| 1052 t.value = TOK.TOKcomment; | |
| 1053 return; | |
| 1054 } | |
| 1055 if (doDocComment && t.ptr[2] == '+' && p - 4 != t.ptr) | |
| 1056 { // if /++ but not /++/ | |
| 1057 getDocComment(t, lastLine == linnum); | |
| 1058 } | |
| 1059 continue; | |
| 1060 } | |
| 1061 | |
| 1062 default: | |
| 1063 break; /// | |
| 1064 } | |
| 1065 t.value = TOK.TOKdiv; | |
| 1066 return; | |
| 1067 | |
| 1068 case '.': | |
| 1069 p++; | |
| 1070 if (isdigit(*p)) | |
| 1071 { /* Note that we don't allow ._1 and ._ as being | |
| 1072 * valid floating point numbers. | |
| 1073 */ | |
| 1074 p--; | |
| 1075 t.value = inreal(t); | |
| 1076 } | |
| 1077 else if (p[0] == '.') | |
| 1078 { | |
| 1079 if (p[1] == '.') | |
| 1080 { p += 2; | |
| 1081 t.value = TOK.TOKdotdotdot; | |
| 1082 } | |
| 1083 else | |
| 1084 { p++; | |
| 1085 t.value = TOK.TOKslice; | |
| 1086 } | |
| 1087 } | |
| 1088 else | |
| 1089 t.value = TOK.TOKdot; | |
| 1090 return; | |
| 1091 | |
| 1092 case '&': | |
| 1093 p++; | |
| 1094 if (*p == '=') | |
| 1095 { p++; | |
| 1096 t.value = TOK.TOKandass; | |
| 1097 } | |
| 1098 else if (*p == '&') | |
| 1099 { p++; | |
| 1100 t.value = TOK.TOKandand; | |
| 1101 } | |
| 1102 else | |
| 1103 t.value = TOK.TOKand; | |
| 1104 return; | |
| 1105 | |
| 1106 case '|': | |
| 1107 p++; | |
| 1108 if (*p == '=') | |
| 1109 { p++; | |
| 1110 t.value = TOK.TOKorass; | |
| 1111 } | |
| 1112 else if (*p == '|') | |
| 1113 { p++; | |
| 1114 t.value = TOK.TOKoror; | |
| 1115 } | |
| 1116 else | |
| 1117 t.value = TOK.TOKor; | |
| 1118 return; | |
| 1119 | |
| 1120 case '-': | |
| 1121 p++; | |
| 1122 if (*p == '=') | |
| 1123 { p++; | |
| 1124 t.value = TOK.TOKminass; | |
| 1125 } | |
| 1126 /// #if 0 | |
| 1127 /// else if (*p == '>') | |
| 1128 /// { p++; | |
| 1129 /// t.value = TOK.TOKarrow; | |
| 1130 /// } | |
| 1131 /// #endif | |
| 1132 else if (*p == '-') | |
| 1133 { p++; | |
| 1134 t.value = TOK.TOKminusminus; | |
| 1135 } | |
| 1136 else | |
| 1137 t.value = TOK.TOKmin; | |
| 1138 return; | |
| 1139 | |
| 1140 case '+': | |
| 1141 p++; | |
| 1142 if (*p == '=') | |
| 1143 { p++; | |
| 1144 t.value = TOK.TOKaddass; | |
| 1145 } | |
| 1146 else if (*p == '+') | |
| 1147 { p++; | |
| 1148 t.value = TOK.TOKplusplus; | |
| 1149 } | |
| 1150 else | |
| 1151 t.value = TOK.TOKadd; | |
| 1152 return; | |
| 1153 | |
| 1154 case '<': | |
| 1155 p++; | |
| 1156 if (*p == '=') | |
| 1157 { p++; | |
| 1158 t.value = TOK.TOKle; // <= | |
| 1159 } | |
| 1160 else if (*p == '<') | |
| 1161 { p++; | |
| 1162 if (*p == '=') | |
| 1163 { p++; | |
| 1164 t.value = TOK.TOKshlass; // <<= | |
| 1165 } | |
| 1166 else | |
| 1167 t.value = TOK.TOKshl; // << | |
| 1168 } | |
| 1169 else if (*p == '>') | |
| 1170 { p++; | |
| 1171 if (*p == '=') | |
| 1172 { p++; | |
| 1173 t.value = TOK.TOKleg; // <>= | |
| 1174 } | |
| 1175 else | |
| 1176 t.value = TOK.TOKlg; // <> | |
| 1177 } | |
| 1178 else | |
| 1179 t.value = TOK.TOKlt; // < | |
| 1180 return; | |
| 1181 | |
| 1182 case '>': | |
| 1183 p++; | |
| 1184 if (*p == '=') | |
| 1185 { p++; | |
| 1186 t.value = TOK.TOKge; // >= | |
| 1187 } | |
| 1188 else if (*p == '>') | |
| 1189 { p++; | |
| 1190 if (*p == '=') | |
| 1191 { p++; | |
| 1192 t.value = TOK.TOKshrass; // >>= | |
| 1193 } | |
| 1194 else if (*p == '>') | |
| 1195 { p++; | |
| 1196 if (*p == '=') | |
| 1197 { p++; | |
| 1198 t.value = TOK.TOKushrass; // >>>= | |
| 1199 } | |
| 1200 else | |
| 1201 t.value = TOK.TOKushr; // >>> | |
| 1202 } | |
| 1203 else | |
| 1204 t.value = TOK.TOKshr; // >> | |
| 1205 } | |
| 1206 else | |
| 1207 t.value = TOK.TOKgt; // > | |
| 1208 return; | |
| 1209 | |
| 1210 case '!': | |
| 1211 p++; | |
| 1212 if (*p == '=') | |
| 1213 { p++; | |
| 1214 if (*p == '=' && global.params.Dversion == 1) | |
| 1215 { p++; | |
| 1216 t.value = TOK.TOKnotidentity; // !== | |
| 1217 } | |
| 1218 else | |
| 1219 t.value = TOK.TOKnotequal; // != | |
| 1220 } | |
| 1221 else if (*p == '<') | |
| 1222 { p++; | |
| 1223 if (*p == '>') | |
| 1224 { p++; | |
| 1225 if (*p == '=') | |
| 1226 { p++; | |
| 1227 t.value = TOK.TOKunord; // !<>= | |
| 1228 } | |
| 1229 else | |
| 1230 t.value = TOK.TOKue; // !<> | |
| 1231 } | |
| 1232 else if (*p == '=') | |
| 1233 { p++; | |
| 1234 t.value = TOK.TOKug; // !<= | |
| 1235 } | |
| 1236 else | |
| 1237 t.value = TOK.TOKuge; // !< | |
| 1238 } | |
| 1239 else if (*p == '>') | |
| 1240 { p++; | |
| 1241 if (*p == '=') | |
| 1242 { p++; | |
| 1243 t.value = TOK.TOKul; // !>= | |
| 1244 } | |
| 1245 else | |
| 1246 t.value = TOK.TOKule; // !> | |
| 1247 } | |
| 1248 else | |
| 1249 t.value = TOK.TOKnot; // ! | |
| 1250 return; | |
| 1251 | |
| 1252 case '=': | |
| 1253 p++; | |
| 1254 if (*p == '=') | |
| 1255 { p++; | |
| 1256 if (*p == '=' && global.params.Dversion == 1) | |
| 1257 { p++; | |
| 1258 t.value = TOK.TOKidentity; // === | |
| 1259 } | |
| 1260 else | |
| 1261 t.value = TOK.TOKequal; // == | |
| 1262 } | |
| 1263 else | |
| 1264 t.value = TOK.TOKassign; // = | |
| 1265 return; | |
| 1266 | |
| 1267 case '~': | |
| 1268 p++; | |
| 1269 if (*p == '=') | |
| 1270 { p++; | |
| 1271 t.value = TOK.TOKcatass; // ~= | |
| 1272 } | |
| 1273 else | |
| 1274 t.value = TOK.TOKtilde; // ~ | |
| 1275 return; | |
|
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1276 |
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|
1277 version(DMDV2) { |
|
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1278 case '^': |
|
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1279 p++; |
|
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1280 if (*p == '^') |
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1281 { p++; |
| 135 | 1282 if (*p == '=') |
| 1283 { p++; | |
| 1284 t.value = TOKpowass; // ^^= | |
| 1285 } | |
| 1286 else | |
|
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1287 t.value = TOKpow; // ^^ |
|
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1288 } |
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1289 else if (*p == '=') |
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1290 { p++; |
|
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1291 t.value = TOKxorass; // ^= |
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1292 } |
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1293 else |
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1294 t.value = TOKxor; // ^ |
|
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1295 return; |
|
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1296 } |
|
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1297 |
| 0 | 1298 /* |
| 1299 #define SINGLE(c,tok) case c: p++; t.value = tok; return; | |
| 1300 | |
| 1301 SINGLE('(', TOKlparen) | |
| 1302 SINGLE(')', TOKrparen) | |
| 1303 SINGLE('[', TOKlbracket) | |
| 1304 SINGLE(']', TOKrbracket) | |
| 1305 SINGLE('{', TOKlcurly) | |
| 1306 SINGLE('}', TOKrcurly) | |
| 1307 SINGLE('?', TOKquestion) | |
| 1308 SINGLE(',', TOKcomma) | |
| 1309 SINGLE(';', TOKsemicolon) | |
| 1310 SINGLE(':', TOKcolon) | |
| 1311 SINGLE('$', TOKdollar) | |
| 1312 SINGLE('@', TOKat) | |
| 1313 | |
| 1314 #undef SINGLE | |
| 1315 | |
| 1316 #define DOUBLE(c1,tok1,c2,tok2) \ | |
| 1317 case c1: \ | |
| 1318 p++; \ | |
| 1319 if (*p == c2) \ | |
| 1320 { p++; \ | |
| 1321 t.value = tok2; \ | |
| 1322 } \ | |
| 1323 else \ | |
| 1324 t.value = tok1; \ | |
| 1325 return; | |
| 1326 | |
| 1327 DOUBLE('*', TOKmul, '=', TOKmulass) | |
| 1328 DOUBLE('%', TOKmod, '=', TOKmodass) | |
|
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1329 #if DMDV1 |
| 0 | 1330 DOUBLE('^', TOKxor, '=', TOKxorass) |
|
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1331 #endif |
| 0 | 1332 #undef DOUBLE |
| 1333 */ | |
| 1334 | |
| 1335 case '(': p++; t.value = TOK.TOKlparen; return; | |
| 1336 case ')': p++; t.value = TOK.TOKrparen; return; | |
| 1337 case '[': p++; t.value = TOK.TOKlbracket; return; | |
| 1338 case ']': p++; t.value = TOK.TOKrbracket; return; | |
| 1339 case '{': p++; t.value = TOK.TOKlcurly; return; | |
| 1340 case '}': p++; t.value = TOK.TOKrcurly; return; | |
| 1341 case '?': p++; t.value = TOK.TOKquestion; return; | |
| 1342 case ',': p++; t.value = TOK.TOKcomma; return; | |
| 1343 case ';': p++; t.value = TOK.TOKsemicolon; return; | |
| 1344 case ':': p++; t.value = TOK.TOKcolon; return; | |
| 1345 case '$': p++; t.value = TOK.TOKdollar; return; | |
| 1346 case '@': p++; t.value = TOK.TOKat; return; | |
| 1347 | |
| 1348 case '*': | |
| 1349 p++; | |
| 1350 if (*p == '=') { | |
| 1351 p++; | |
| 1352 t.value = TOK.TOKmulass; | |
| 1353 } else { | |
| 1354 t.value = TOK.TOKmul; | |
| 1355 } | |
| 1356 return; | |
| 1357 | |
| 1358 case '%': | |
| 1359 p++; | |
| 1360 if (*p == '=') { | |
| 1361 p++; | |
| 1362 t.value = TOK.TOKmodass; | |
| 1363 } else { | |
| 1364 t.value = TOK.TOKmod; | |
| 1365 } | |
| 1366 return; | |
|
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|
1367 version(DMDV1) { |
| 0 | 1368 case '^': |
| 1369 p++; | |
| 1370 if (*p == '=') { | |
| 1371 p++; | |
| 1372 t.value = TOK.TOKxorass; | |
| 1373 } else { | |
| 1374 t.value = TOK.TOKxor; | |
| 1375 } | |
| 1376 return; | |
|
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|
1377 } |
| 0 | 1378 case '#': |
| 1379 p++; | |
| 1380 pragma_(); | |
| 1381 continue; | |
| 1382 | |
| 1383 default: | |
| 135 | 1384 { uint c = *p; |
| 0 | 1385 |
| 1386 if (c & 0x80) | |
| 135 | 1387 { c = decodeUTF(); |
| 0 | 1388 |
| 1389 // Check for start of unicode identifier | |
| 135 | 1390 if (isUniAlpha(c)) |
| 0 | 1391 goto case_ident; |
| 1392 | |
| 135 | 1393 if (c == PS || c == LS) |
| 0 | 1394 { |
| 1395 loc.linnum++; | |
| 1396 p++; | |
| 1397 continue; | |
| 1398 } | |
| 1399 } | |
| 135 | 1400 if (c < 0x80 && isprint(c)) |
| 0 | 1401 error("unsupported char '%c'", c); |
| 1402 else | |
| 1403 error("unsupported char 0x%02x", c); | |
| 1404 p++; | |
| 1405 continue; | |
| 1406 } | |
| 1407 } | |
| 1408 } | |
| 1409 } | |
| 1410 | |
| 1411 Token* peek(Token* ct) | |
| 1412 { | |
| 1413 Token* t; | |
| 1414 | |
| 1415 if (ct.next) | |
| 1416 t = ct.next; | |
| 1417 else | |
| 1418 { | |
| 1419 t = new Token(); | |
| 1420 scan(t); | |
| 1421 t.next = null; | |
| 1422 ct.next = t; | |
| 1423 } | |
| 1424 return t; | |
| 1425 } | |
| 1426 | |
| 1427 Token* peekPastParen(Token* tk) | |
| 1428 { | |
| 1429 //printf("peekPastParen()\n"); | |
| 1430 int parens = 1; | |
| 1431 int curlynest = 0; | |
| 1432 while (1) | |
| 1433 { | |
| 1434 tk = peek(tk); | |
| 1435 //tk.print(); | |
| 1436 switch (tk.value) | |
| 1437 { | |
| 1438 case TOK.TOKlparen: | |
| 1439 parens++; | |
| 1440 continue; | |
| 1441 | |
| 1442 case TOK.TOKrparen: | |
| 1443 --parens; | |
| 1444 if (parens) | |
| 1445 continue; | |
| 1446 tk = peek(tk); | |
| 1447 break; | |
| 1448 | |
| 1449 case TOK.TOKlcurly: | |
| 1450 curlynest++; | |
| 1451 continue; | |
| 1452 | |
| 1453 case TOK.TOKrcurly: | |
| 1454 if (--curlynest >= 0) | |
| 1455 continue; | |
| 1456 break; | |
| 1457 | |
| 1458 case TOK.TOKsemicolon: | |
| 1459 if (curlynest) | |
| 1460 continue; | |
| 1461 break; | |
| 1462 | |
| 1463 case TOK.TOKeof: | |
| 1464 break; | |
| 1465 | |
| 1466 default: | |
| 1467 continue; | |
| 1468 } | |
| 1469 return tk; | |
| 1470 } | |
| 1471 } | |
| 1472 | |
| 1473 /******************************************* | |
| 1474 * Parse escape sequence. | |
| 1475 */ | |
| 1476 uint escapeSequence() | |
| 1477 { | |
| 1478 uint c = *p; | |
| 1479 | |
| 1480 version (TEXTUAL_ASSEMBLY_OUT) { | |
| 1481 return c; | |
| 1482 } | |
| 1483 int n; | |
| 1484 int ndigits; | |
| 1485 | |
| 1486 switch (c) | |
| 1487 { | |
| 1488 case '\'': | |
| 1489 case '"': | |
| 1490 case '?': | |
| 1491 case '\\': | |
| 1492 Lconsume: | |
| 1493 p++; | |
| 1494 break; | |
| 1495 | |
| 1496 case 'a': c = 7; goto Lconsume; | |
| 1497 case 'b': c = 8; goto Lconsume; | |
| 1498 case 'f': c = 12; goto Lconsume; | |
| 1499 case 'n': c = 10; goto Lconsume; | |
| 1500 case 'r': c = 13; goto Lconsume; | |
| 1501 case 't': c = 9; goto Lconsume; | |
| 1502 case 'v': c = 11; goto Lconsume; | |
| 1503 | |
| 1504 case 'u': | |
| 1505 ndigits = 4; | |
| 1506 goto Lhex; | |
| 1507 case 'U': | |
| 1508 ndigits = 8; | |
| 1509 goto Lhex; | |
| 1510 case 'x': | |
| 1511 ndigits = 2; | |
| 1512 Lhex: | |
| 1513 p++; | |
| 1514 c = *p; | |
| 1515 if (ishex(cast(ubyte)c)) | |
| 1516 { | |
| 1517 uint v; | |
| 1518 | |
| 1519 n = 0; | |
| 1520 v = 0; | |
| 1521 while (1) | |
| 1522 { | |
| 1523 if (isdigit(c)) | |
| 1524 c -= '0'; | |
| 1525 else if (islower(c)) | |
| 1526 c -= 'a' - 10; | |
| 1527 else | |
| 1528 c -= 'A' - 10; | |
| 1529 v = v * 16 + c; | |
| 1530 c = *++p; | |
| 1531 if (++n == ndigits) | |
| 1532 break; | |
| 1533 if (!ishex(cast(ubyte)c)) | |
| 1534 { error("escape hex sequence has %d hex digits instead of %d", n, ndigits); | |
| 1535 break; | |
| 1536 } | |
| 1537 } | |
| 1538 if (ndigits != 2 && !utf_isValidDchar(v)) | |
| 1539 { error("invalid UTF character \\U%08x", v); | |
| 1540 v = '?'; // recover with valid UTF character | |
| 1541 } | |
| 1542 c = v; | |
| 1543 } | |
| 1544 else | |
| 1545 error("undefined escape hex sequence \\%c\n",c); | |
| 1546 break; | |
| 1547 | |
| 1548 case '&': // named character entity | |
| 1549 for (ubyte* idstart = ++p; true; p++) | |
| 1550 { | |
| 1551 switch (*p) | |
| 1552 { | |
| 1553 case ';': | |
| 1554 c = HtmlNamedEntity(idstart, p - idstart); | |
| 1555 if (c == ~0) | |
| 1556 { | |
| 1557 error("unnamed character entity &%s;", idstart[0..(p - idstart)]); | |
| 1558 c = ' '; | |
| 1559 } | |
| 1560 p++; | |
| 1561 break; | |
| 1562 | |
| 1563 default: | |
| 1564 if (isalpha(*p) || | |
| 1565 (p != idstart + 1 && isdigit(*p))) | |
| 1566 continue; | |
| 1567 error("unterminated named entity"); | |
| 1568 break; | |
| 1569 } | |
| 1570 break; | |
| 1571 } | |
| 1572 break; | |
| 1573 | |
| 1574 case 0: | |
| 1575 case 0x1A: // end of file | |
| 1576 c = '\\'; | |
| 1577 break; | |
| 1578 | |
| 1579 default: | |
| 1580 if (isoctal(cast(ubyte)c)) | |
| 1581 { | |
| 1582 uint v; | |
| 1583 | |
| 1584 n = 0; | |
| 1585 v = 0; | |
| 1586 do | |
| 1587 { | |
| 1588 v = v * 8 + (c - '0'); | |
| 1589 c = *++p; | |
| 1590 } while (++n < 3 && isoctal(cast(ubyte)c)); | |
| 1591 c = v; | |
| 1592 if (c > 0xFF) | |
| 1593 error("0%03o is larger than a byte", c); | |
| 1594 } | |
| 1595 else | |
| 1596 error("undefined escape sequence \\%c\n",c); | |
| 1597 break; | |
| 1598 } | |
| 1599 return c; | |
| 1600 } | |
| 1601 | |
| 1602 TOK wysiwygStringConstant(Token* t, int tc) | |
| 1603 { | |
|
8
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1604 uint c; |
|
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1605 Loc start = loc; |
|
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1606 |
|
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|
1607 p++; |
|
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wysiwyg strings, alias this, templates, TypeSlice implementation
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|
1608 stringbuffer.reset(); |
|
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wysiwyg strings, alias this, templates, TypeSlice implementation
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|
1609 while (true) |
|
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wysiwyg strings, alias this, templates, TypeSlice implementation
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|
1610 { |
|
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1611 c = *p++; |
|
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1612 switch (c) |
|
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1613 { |
|
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1614 case '\n': |
|
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1615 loc.linnum++; |
|
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|
1616 break; |
|
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|
1617 |
|
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1618 case '\r': |
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1619 if (*p == '\n') |
|
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1620 continue; // ignore |
|
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1621 c = '\n'; // treat EndOfLine as \n character |
|
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1622 loc.linnum++; |
|
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1623 break; |
|
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|
1624 |
|
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1625 case 0: |
|
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1626 case 0x1A: |
|
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1627 error("unterminated string constant starting at %s", start.toChars()); |
|
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|
1628 t.ustring = "".ptr; |
|
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|
1629 t.len = 0; |
|
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|
1630 t.postfix = 0; |
|
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|
1631 return TOKstring; |
|
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|
1632 |
|
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|
1633 case '"': |
|
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|
1634 case '`': |
|
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|
1635 if (c == tc) |
|
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|
1636 { |
|
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|
1637 t.len = stringbuffer.offset; |
|
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|
1638 stringbuffer.writeByte(0); |
|
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|
1639 char* tmp = cast(char*)GC.malloc(stringbuffer.offset); |
|
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|
1640 memcpy(tmp, stringbuffer.data, stringbuffer.offset); |
|
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|
1641 t.ustring = tmp; |
|
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|
1642 stringPostfix(t); |
|
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|
1643 return TOKstring; |
|
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|
1644 } |
|
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|
1645 break; |
|
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|
1646 |
|
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|
1647 default: |
|
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|
1648 if (c & 0x80) |
|
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|
1649 { p--; |
|
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|
1650 uint u = decodeUTF(); |
|
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|
1651 p++; |
|
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|
1652 if (u == PS || u == LS) |
|
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4
diff
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|
1653 loc.linnum++; |
|
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|
1654 stringbuffer.writeUTF8(u); |
|
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diff
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|
1655 continue; |
|
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4
diff
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|
1656 } |
|
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diff
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|
1657 break; |
|
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diff
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|
1658 } |
|
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|
1659 stringbuffer.writeByte(c); |
|
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|
1660 } |
|
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|
1661 |
| 0 | 1662 assert(false); |
| 1663 } | |
| 1664 | |
| 51 | 1665 /************************************** |
| 1666 * Lex hex strings: | |
| 1667 * x"0A ae 34FE BD" | |
| 1668 */ | |
| 0 | 1669 TOK hexStringConstant(Token* t) |
| 1670 { | |
| 51 | 1671 uint c; |
| 1672 Loc start = loc; | |
| 1673 uint n = 0; | |
| 1674 uint v; | |
| 1675 | |
| 1676 p++; | |
| 1677 stringbuffer.reset(); | |
| 1678 while (1) | |
| 1679 { | |
| 1680 c = *p++; | |
| 1681 switch (c) | |
| 1682 { | |
| 1683 case ' ': | |
| 1684 case '\t': | |
| 1685 case '\v': | |
| 1686 case '\f': | |
| 1687 continue; // skip white space | |
| 1688 | |
| 1689 case '\r': | |
| 1690 if (*p == '\n') | |
| 1691 continue; // ignore | |
| 1692 // Treat isolated '\r' as if it were a '\n' | |
| 1693 case '\n': | |
| 1694 loc.linnum++; | |
| 1695 continue; | |
| 1696 | |
| 1697 case 0: | |
| 1698 case 0x1A: | |
| 1699 error("unterminated string constant starting at %s", start.toChars()); | |
| 1700 t.ustring = "".ptr; | |
| 1701 t.len = 0; | |
| 1702 t.postfix = 0; | |
| 1703 return TOKstring; | |
| 1704 | |
| 1705 case '"': | |
| 1706 if (n & 1) | |
| 1707 { | |
| 1708 error("odd number (%d) of hex characters in hex string", n); | |
| 1709 stringbuffer.writeByte(v); | |
| 1710 } | |
| 1711 t.len = stringbuffer.offset; | |
| 1712 stringbuffer.writeByte(0); | |
| 1713 void* mem = malloc(stringbuffer.offset); | |
| 1714 memcpy(mem, stringbuffer.data, stringbuffer.offset); | |
| 1715 t.ustring = cast(const(char)*)mem; | |
| 1716 stringPostfix(t); | |
| 1717 return TOKstring; | |
| 1718 | |
| 1719 default: | |
| 1720 if (c >= '0' && c <= '9') | |
| 1721 c -= '0'; | |
| 1722 else if (c >= 'a' && c <= 'f') | |
| 1723 c -= 'a' - 10; | |
| 1724 else if (c >= 'A' && c <= 'F') | |
| 1725 c -= 'A' - 10; | |
| 1726 else if (c & 0x80) | |
| 1727 { p--; | |
| 1728 uint u = decodeUTF(); | |
| 1729 p++; | |
| 1730 if (u == PS || u == LS) | |
| 1731 loc.linnum++; | |
| 1732 else | |
| 135 | 1733 error("non-hex character \\u%04x", u); |
| 51 | 1734 } |
| 1735 else | |
| 1736 error("non-hex character '%c'", c); | |
| 1737 if (n & 1) | |
| 1738 { v = (v << 4) | c; | |
| 1739 stringbuffer.writeByte(v); | |
| 1740 } | |
| 1741 else | |
| 1742 v = c; | |
| 1743 n++; | |
| 1744 break; | |
| 1745 } | |
| 1746 } | |
| 0 | 1747 } |
| 1748 | |
| 1749 version (DMDV2) { | |
| 51 | 1750 /************************************** |
| 1751 * Lex delimited strings: | |
| 1752 * q"(foo(xxx))" // "foo(xxx)" | |
| 1753 * q"[foo(]" // "foo(" | |
| 1754 * q"/foo]/" // "foo]" | |
| 1755 * q"HERE | |
| 1756 * foo | |
| 1757 * HERE" // "foo\n" | |
| 1758 * Input: | |
| 1759 * p is on the " | |
| 1760 */ | |
| 0 | 1761 TOK delimitedStringConstant(Token* t) |
| 1762 { | |
| 51 | 1763 uint c; |
| 1764 Loc start = loc; | |
| 1765 uint delimleft = 0; | |
| 1766 uint delimright = 0; | |
| 1767 uint nest = 1; | |
| 1768 uint nestcount; | |
| 1769 Identifier hereid = null; | |
| 1770 uint blankrol = 0; | |
| 1771 uint startline = 0; | |
| 1772 | |
| 1773 p++; | |
| 1774 stringbuffer.reset(); | |
| 1775 while (1) | |
| 1776 { | |
| 1777 c = *p++; | |
| 1778 //printf("c = '%c'\n", c); | |
| 1779 switch (c) | |
| 1780 { | |
| 1781 case '\n': | |
| 1782 Lnextline: | |
| 1783 loc.linnum++; | |
| 1784 startline = 1; | |
| 1785 if (blankrol) | |
| 1786 { blankrol = 0; | |
| 1787 continue; | |
| 1788 } | |
| 1789 if (hereid) | |
| 1790 { | |
| 1791 stringbuffer.writeUTF8(c); | |
| 1792 continue; | |
| 1793 } | |
| 1794 break; | |
| 1795 | |
| 1796 case '\r': | |
| 1797 if (*p == '\n') | |
| 1798 continue; // ignore | |
| 1799 c = '\n'; // treat EndOfLine as \n character | |
| 1800 goto Lnextline; | |
| 1801 | |
| 1802 case 0: | |
| 1803 case 0x1A: | |
| 1804 goto Lerror; | |
| 1805 | |
| 1806 default: | |
| 1807 if (c & 0x80) | |
| 1808 { p--; | |
| 1809 c = decodeUTF(); | |
| 1810 p++; | |
| 1811 if (c == PS || c == LS) | |
| 1812 goto Lnextline; | |
| 1813 } | |
| 1814 break; | |
| 1815 } | |
| 1816 if (delimleft == 0) | |
| 1817 { | |
| 1818 delimleft = c; | |
| 1819 nest = 1; | |
| 1820 nestcount = 1; | |
| 1821 if (c == '(') | |
| 1822 delimright = ')'; | |
| 1823 else if (c == '{') | |
| 1824 delimright = '}'; | |
| 1825 else if (c == '[') | |
| 1826 delimright = ']'; | |
| 1827 else if (c == '<') | |
| 1828 delimright = '>'; | |
| 1829 else if (isalpha(c) || c == '_' || (c >= 0x80 && isUniAlpha(c))) | |
| 1830 { | |
| 1831 // Start of identifier; must be a heredoc | |
| 1832 Token t2; | |
| 1833 p--; | |
| 1834 scan(&t2); // read in heredoc identifier | |
| 1835 if (t2.value != TOKidentifier) | |
| 1836 { | |
| 1837 error("identifier expected for heredoc, not %s", t2.toChars()); | |
| 1838 delimright = c; | |
| 1839 } | |
| 1840 else | |
| 1841 { | |
| 1842 hereid = t2.ident; | |
| 1843 //printf("hereid = '%s'\n", hereid.toChars()); | |
| 1844 blankrol = 1; | |
| 1845 } | |
| 1846 nest = 0; | |
| 1847 } | |
| 1848 else | |
| 1849 { | |
| 1850 delimright = c; | |
| 1851 nest = 0; | |
| 1852 if (isspace(c)) | |
| 1853 error("delimiter cannot be whitespace"); | |
| 1854 } | |
| 1855 } | |
| 1856 else | |
| 1857 { | |
| 1858 if (blankrol) | |
| 1859 { | |
| 1860 error("heredoc rest of line should be blank"); | |
| 1861 blankrol = 0; | |
| 1862 continue; | |
| 1863 } | |
| 1864 if (nest == 1) | |
| 1865 { | |
| 1866 if (c == delimleft) | |
| 1867 nestcount++; | |
| 1868 else if (c == delimright) | |
| 1869 { nestcount--; | |
| 1870 if (nestcount == 0) | |
| 1871 goto Ldone; | |
| 1872 } | |
| 1873 } | |
| 1874 else if (c == delimright) | |
| 1875 goto Ldone; | |
| 1876 if (startline && isalpha(c) && hereid) | |
| 1877 { | |
| 1878 Token t2; | |
| 1879 ubyte* psave = p; | |
| 1880 p--; | |
| 1881 scan(&t2); // read in possible heredoc identifier | |
| 1882 //printf("endid = '%s'\n", t2.ident.toChars()); | |
| 1883 if (t2.value == TOKidentifier && t2.ident.equals(hereid)) | |
| 1884 { | |
| 1885 /* should check that rest of line is blank | |
| 1886 */ | |
| 1887 goto Ldone; | |
| 1888 } | |
| 1889 p = psave; | |
| 1890 } | |
| 1891 stringbuffer.writeUTF8(c); | |
| 1892 startline = 0; | |
| 1893 } | |
| 1894 } | |
| 1895 | |
| 1896 Ldone: | |
| 1897 if (*p == '"') | |
| 1898 p++; | |
| 1899 else | |
| 1900 error("delimited string must end in %c\"", delimright); | |
| 1901 t.len = stringbuffer.offset; | |
| 1902 stringbuffer.writeByte(0); | |
| 1903 void* mem = malloc(stringbuffer.offset); | |
| 1904 memcpy(mem, stringbuffer.data, stringbuffer.offset); | |
| 1905 t.ustring = cast(const(char)*)mem; | |
| 1906 stringPostfix(t); | |
| 1907 return TOKstring; | |
| 1908 | |
| 1909 Lerror: | |
| 1910 error("unterminated string constant starting at %s", start.toChars()); | |
| 1911 t.ustring = "".ptr; | |
| 1912 t.len = 0; | |
| 1913 t.postfix = 0; | |
| 1914 return TOKstring; | |
| 0 | 1915 } |
| 1916 | |
|
8
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1917 /************************************** |
|
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|
1918 * Lex delimited strings: |
|
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|
1919 * q{ foo(xxx) } // " foo(xxx) " |
|
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1920 * q{foo(} // "foo(" |
|
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1921 * q{{foo}"}"} // "{foo}"}"" |
|
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|
1922 * Input: |
|
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|
1923 * p is on the q |
|
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|
1924 */ |
| 0 | 1925 TOK tokenStringConstant(Token* t) |
| 1926 { | |
|
8
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1927 uint nest = 1; |
|
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|
1928 Loc start = loc; |
|
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|
1929 ubyte* pstart = ++p; |
|
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1930 |
|
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|
1931 while (true) |
|
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1932 { |
|
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|
1933 Token tok; |
|
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1934 |
|
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1935 scan(&tok); |
|
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|
1936 switch (tok.value) |
|
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|
1937 { |
|
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|
1938 case TOKlcurly: |
|
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|
1939 nest++; |
|
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|
1940 continue; |
|
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|
1941 |
|
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|
1942 case TOKrcurly: |
|
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|
1943 if (--nest == 0) |
|
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|
1944 goto Ldone; |
|
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|
1945 continue; |
|
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|
1946 |
|
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1947 case TOKeof: |
|
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1948 goto Lerror; |
|
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1949 |
|
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|
1950 default: |
|
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1951 continue; |
|
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|
1952 } |
|
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1953 } |
|
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1954 |
|
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1955 Ldone: |
|
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1956 t.len = p - 1 - pstart; |
|
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1957 char* tmp = cast(char*)GC.malloc(t.len + 1); |
|
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1958 memcpy(tmp, pstart, t.len); |
|
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1959 tmp[t.len] = 0; |
|
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1960 t.ustring = tmp; |
|
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1961 stringPostfix(t); |
|
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1962 return TOKstring; |
|
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|
1963 |
|
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|
1964 Lerror: |
|
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|
1965 error("unterminated token string constant starting at %s", start.toChars()); |
|
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parents:
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diff
changeset
|
1966 t.ustring = "".ptr; |
|
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dkoroskin <>
parents:
4
diff
changeset
|
1967 t.len = 0; |
|
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wysiwyg strings, alias this, templates, TypeSlice implementation
dkoroskin <>
parents:
4
diff
changeset
|
1968 t.postfix = 0; |
|
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parents:
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diff
changeset
|
1969 return TOKstring; |
| 0 | 1970 } |
| 1971 } | |
| 1972 TOK escapeStringConstant(Token* t, int wide) | |
| 1973 { | |
| 1974 uint c; | |
| 1975 Loc start = loc; | |
| 1976 | |
| 1977 p++; | |
| 1978 stringbuffer.reset(); | |
| 1979 while (true) | |
| 1980 { | |
| 1981 c = *p++; | |
| 1982 switch (c) | |
| 1983 { | |
| 1984 version (TEXTUAL_ASSEMBLY_OUT) { | |
| 1985 } else { | |
| 1986 case '\\': | |
| 1987 switch (*p) | |
| 1988 { | |
| 1989 case 'u': | |
| 1990 case 'U': | |
| 1991 case '&': | |
| 1992 c = escapeSequence(); | |
| 1993 stringbuffer.writeUTF8(c); | |
| 1994 continue; | |
| 1995 | |
| 1996 default: | |
| 1997 c = escapeSequence(); | |
| 1998 break; | |
| 1999 } | |
| 2000 break; | |
| 2001 } | |
| 2002 case '\n': | |
| 2003 loc.linnum++; | |
| 2004 break; | |
| 2005 | |
| 2006 case '\r': | |
| 2007 if (*p == '\n') | |
| 2008 continue; // ignore | |
| 2009 c = '\n'; // treat EndOfLine as \n character | |
| 2010 loc.linnum++; | |
| 2011 break; | |
| 2012 | |
| 2013 case '"': | |
| 2014 t.len = stringbuffer.offset; | |
| 2015 stringbuffer.writeByte(0); | |
| 2 | 2016 char* tmp = cast(char*)GC.malloc(stringbuffer.offset); |
| 0 | 2017 memcpy(tmp, stringbuffer.data, stringbuffer.offset); |
| 2018 t.ustring = tmp; | |
| 2019 stringPostfix(t); | |
| 2020 return TOK.TOKstring; | |
| 2021 | |
| 2022 case 0: | |
| 2023 case 0x1A: | |
| 2024 p--; | |
| 2025 error("unterminated string constant starting at %s", start.toChars()); | |
| 2026 t.ustring = "".ptr; | |
| 2027 t.len = 0; | |
| 2028 t.postfix = 0; | |
| 2029 return TOK.TOKstring; | |
| 2030 | |
| 2031 default: | |
| 2032 if (c & 0x80) | |
| 2033 { | |
| 2034 p--; | |
| 2035 c = decodeUTF(); | |
| 2036 if (c == LS || c == PS) | |
| 2037 { c = '\n'; | |
| 2038 loc.linnum++; | |
| 2039 } | |
| 2040 p++; | |
| 2041 stringbuffer.writeUTF8(c); | |
| 2042 continue; | |
| 2043 } | |
| 2044 break; | |
| 2045 } | |
| 2046 stringbuffer.writeByte(c); | |
| 2047 } | |
| 2048 | |
| 2049 assert(false); | |
| 2050 } | |
| 2051 | |
| 2052 TOK charConstant(Token* t, int wide) | |
| 2053 { | |
| 2054 uint c; | |
| 2055 TOK tk = TOKcharv; | |
| 2056 | |
| 2057 //printf("Lexer.charConstant\n"); | |
| 2058 p++; | |
| 2059 c = *p++; | |
| 2060 switch (c) | |
| 2061 { | |
| 2062 version (TEXTUAL_ASSEMBLY_OUT) { | |
| 2063 } else { | |
| 2064 case '\\': | |
| 2065 switch (*p) | |
| 2066 { | |
| 2067 case 'u': | |
| 2068 t.uns64value = escapeSequence(); | |
| 2069 tk = TOKwcharv; | |
| 2070 break; | |
| 2071 | |
| 2072 case 'U': | |
| 2073 case '&': | |
| 2074 t.uns64value = escapeSequence(); | |
| 2075 tk = TOKdcharv; | |
| 2076 break; | |
| 2077 | |
| 2078 default: | |
| 2079 t.uns64value = escapeSequence(); | |
| 2080 break; | |
| 2081 } | |
| 2082 break; | |
| 2083 } | |
| 2084 case '\n': | |
| 2085 L1: | |
| 2086 loc.linnum++; | |
| 2087 case '\r': | |
| 2088 case 0: | |
| 2089 case 0x1A: | |
| 2090 case '\'': | |
| 2091 error("unterminated character constant"); | |
| 2092 return tk; | |
| 2093 | |
| 2094 default: | |
| 2095 if (c & 0x80) | |
| 2096 { | |
| 2097 p--; | |
| 2098 c = decodeUTF(); | |
| 2099 p++; | |
| 2100 if (c == LS || c == PS) | |
| 2101 goto L1; | |
| 2102 if (c < 0xD800 || (c >= 0xE000 && c < 0xFFFE)) | |
| 2103 tk = TOKwcharv; | |
| 2104 else | |
| 2105 tk = TOKdcharv; | |
| 2106 } | |
| 2107 t.uns64value = c; | |
| 2108 break; | |
| 2109 } | |
| 2110 | |
| 2111 if (*p != '\'') | |
| 2112 { | |
| 2113 error("unterminated character constant"); | |
| 2114 return tk; | |
| 2115 } | |
| 2116 p++; | |
| 2117 return tk; | |
| 2118 } | |
| 2119 | |
| 2120 /*************************************** | |
| 2121 * Get postfix of string literal. | |
| 2122 */ | |
| 2123 void stringPostfix(Token* t) | |
| 2124 { | |
| 2125 switch (*p) | |
| 2126 { | |
| 2127 case 'c': | |
| 2128 case 'w': | |
| 2129 case 'd': | |
| 2130 t.postfix = *p; | |
| 2131 p++; | |
| 2132 break; | |
| 2133 | |
| 2134 default: | |
| 2135 t.postfix = 0; | |
| 2136 break; | |
| 2137 } | |
| 2138 } | |
| 2139 | |
| 2140 uint wchar_(uint u) | |
| 2141 { | |
| 2142 assert(false); | |
| 2143 } | |
| 2144 | |
| 2145 /************************************** | |
| 2146 * Read in a number. | |
| 2147 * If it's an integer, store it in tok.TKutok.Vlong. | |
| 2148 * integers can be decimal, octal or hex | |
| 2149 * Handle the suffixes U, UL, LU, L, etc. | |
| 2150 * If it's double, store it in tok.TKutok.Vdouble. | |
| 2151 * Returns: | |
| 2152 * TKnum | |
| 2153 * TKdouble,... | |
| 2154 */ | |
| 2155 | |
| 2156 TOK number(Token* t) | |
| 2157 { | |
| 2158 // We use a state machine to collect numbers | |
| 2159 enum STATE { STATE_initial, STATE_0, STATE_decimal, STATE_octal, STATE_octale, | |
| 2160 STATE_hex, STATE_binary, STATE_hex0, STATE_binary0, | |
| 2161 STATE_hexh, STATE_error }; | |
| 2162 STATE state; | |
| 2163 | |
| 2164 enum FLAGS | |
| 2165 { | |
| 2166 FLAGS_undefined = 0, | |
| 2167 FLAGS_decimal = 1, // decimal | |
| 2168 FLAGS_unsigned = 2, // u or U suffix | |
| 2169 FLAGS_long = 4, // l or L suffix | |
| 2170 }; | |
| 2171 | |
| 2172 FLAGS flags = FLAGS.FLAGS_decimal; | |
| 2173 | |
| 2174 int i; | |
| 2175 int base; | |
| 2176 uint c; | |
| 2177 ubyte *start; | |
| 2178 TOK result; | |
| 2179 | |
| 2180 //printf("Lexer.number()\n"); | |
| 2181 state = STATE.STATE_initial; | |
| 2182 base = 0; | |
| 2183 stringbuffer.reset(); | |
| 2184 start = p; | |
| 2185 while (1) | |
| 2186 { | |
| 2187 c = *p; | |
| 2188 switch (state) | |
| 2189 { | |
| 2190 case STATE.STATE_initial: // opening state | |
| 2191 if (c == '0') | |
| 2192 state = STATE.STATE_0; | |
| 2193 else | |
| 2194 state = STATE.STATE_decimal; | |
| 2195 break; | |
| 2196 | |
| 2197 case STATE.STATE_0: | |
| 2198 flags = (flags & ~FLAGS.FLAGS_decimal); | |
| 2199 switch (c) | |
| 2200 { | |
| 2201 version (ZEROH) { | |
| 2202 case 'H': // 0h | |
| 2203 case 'h': | |
| 2204 goto hexh; | |
| 2205 } | |
| 2206 case 'X': | |
| 2207 case 'x': | |
| 2208 state = STATE.STATE_hex0; | |
| 2209 break; | |
| 2210 | |
| 2211 case '.': | |
| 2212 if (p[1] == '.') // .. is a separate token | |
| 2213 goto done; | |
| 2214 case 'i': | |
| 2215 case 'f': | |
| 2216 case 'F': | |
| 2217 goto real_; | |
| 2218 version (ZEROH) { | |
| 2219 case 'E': | |
| 2220 case 'e': | |
| 2221 goto case_hex; | |
| 2222 } | |
| 2223 case 'B': | |
| 2224 case 'b': | |
| 2225 state = STATE.STATE_binary0; | |
| 2226 break; | |
| 2227 | |
| 2228 case '0': case '1': case '2': case '3': | |
| 2229 case '4': case '5': case '6': case '7': | |
| 2230 state = STATE.STATE_octal; | |
| 2231 break; | |
| 2232 | |
| 2233 version (ZEROH) { | |
| 2234 case '8': case '9': case 'A': | |
| 2235 case 'C': case 'D': case 'F': | |
| 2236 case 'a': case 'c': case 'd': case 'f': | |
| 2237 case_hex: | |
| 2238 state = STATE.STATE_hexh; | |
| 2239 break; | |
| 2240 } | |
| 2241 case '_': | |
| 2242 state = STATE.STATE_octal; | |
| 2243 p++; | |
| 2244 continue; | |
| 2245 | |
| 2246 case 'L': | |
| 2247 if (p[1] == 'i') | |
| 2248 goto real_; | |
| 2249 goto done; | |
| 2250 | |
| 2251 default: | |
| 2252 goto done; | |
| 2253 } | |
| 2254 break; | |
| 2255 | |
| 2256 case STATE.STATE_decimal: // reading decimal number | |
| 2257 if (!isdigit(c)) | |
| 2258 { | |
| 2259 version (ZEROH) { | |
| 2260 if (ishex(c) | |
| 2261 || c == 'H' || c == 'h' | |
| 2262 ) | |
| 2263 goto hexh; | |
| 2264 } | |
| 2265 if (c == '_') // ignore embedded _ | |
| 2266 { p++; | |
| 2267 continue; | |
| 2268 } | |
| 2269 if (c == '.' && p[1] != '.') | |
| 2270 goto real_; | |
| 2271 else if (c == 'i' || c == 'f' || c == 'F' || | |
| 2272 c == 'e' || c == 'E') | |
| 2273 { | |
| 2274 real_: // It's a real number. Back up and rescan as a real | |
| 2275 p = start; | |
| 2276 return inreal(t); | |
| 2277 } | |
| 2278 else if (c == 'L' && p[1] == 'i') | |
| 2279 goto real_; | |
| 2280 goto done; | |
| 2281 } | |
| 2282 break; | |
| 2283 | |
| 2284 case STATE.STATE_hex0: // reading hex number | |
| 2285 case STATE.STATE_hex: | |
| 2286 if (! ishex(cast(ubyte)c)) | |
| 2287 { | |
| 2288 if (c == '_') // ignore embedded _ | |
| 2289 { p++; | |
| 2290 continue; | |
| 2291 } | |
| 2292 if (c == '.' && p[1] != '.') | |
| 2293 goto real_; | |
| 2294 if (c == 'P' || c == 'p' || c == 'i') | |
| 2295 goto real_; | |
| 2296 if (state == STATE.STATE_hex0) | |
| 2297 error("Hex digit expected, not '%c'", c); | |
| 2298 goto done; | |
| 2299 } | |
| 2300 state = STATE.STATE_hex; | |
| 2301 break; | |
| 2302 | |
| 2303 version (ZEROH) { | |
| 2304 hexh: | |
| 2305 state = STATE.STATE_hexh; | |
| 2306 case STATE.STATE_hexh: // parse numbers like 0FFh | |
| 2307 if (!ishex(c)) | |
| 2308 { | |
| 2309 if (c == 'H' || c == 'h') | |
| 2310 { | |
| 2311 p++; | |
| 2312 base = 16; | |
| 2313 goto done; | |
| 2314 } | |
| 2315 else | |
| 2316 { | |
| 2317 // Check for something like 1E3 or 0E24 | |
| 2318 if (memchr(cast(char*)stringbuffer.data, 'E', stringbuffer.offset) || | |
| 2319 memchr(cast(char*)stringbuffer.data, 'e', stringbuffer.offset)) | |
| 2320 goto real_; | |
| 2321 error("Hex digit expected, not '%c'", c); | |
| 2322 goto done; | |
| 2323 } | |
| 2324 } | |
| 2325 break; | |
| 2326 } | |
| 2327 | |
| 2328 case STATE.STATE_octal: // reading octal number | |
| 2329 case STATE.STATE_octale: // reading octal number with non-octal digits | |
| 2330 if (!isoctal(cast(ubyte)c)) | |
| 2331 { | |
| 2332 version (ZEROH) { | |
| 2333 if (ishex(c) | |
| 2334 || c == 'H' || c == 'h' | |
| 2335 ) | |
| 2336 goto hexh; | |
| 2337 } | |
| 2338 if (c == '_') // ignore embedded _ | |
| 2339 { p++; | |
| 2340 continue; | |
| 2341 } | |
| 2342 if (c == '.' && p[1] != '.') | |
| 2343 goto real_; | |
| 2344 if (c == 'i') | |
| 2345 goto real_; | |
| 2346 if (isdigit(c)) | |
| 2347 { | |
| 2348 state = STATE.STATE_octale; | |
| 2349 } | |
| 2350 else | |
| 2351 goto done; | |
| 2352 } | |
| 2353 break; | |
| 2354 | |
| 2355 case STATE.STATE_binary0: // starting binary number | |
| 2356 case STATE.STATE_binary: // reading binary number | |
| 2357 if (c != '0' && c != '1') | |
| 2358 { | |
| 2359 version (ZEROH) { | |
| 2360 if (ishex(c) | |
| 2361 || c == 'H' || c == 'h' | |
| 2362 ) | |
| 2363 goto hexh; | |
| 2364 } | |
| 2365 if (c == '_') // ignore embedded _ | |
| 2366 { p++; | |
| 2367 continue; | |
| 2368 } | |
| 2369 if (state == STATE.STATE_binary0) | |
| 2370 { error("binary digit expected"); | |
| 2371 state = STATE.STATE_error; | |
| 2372 break; | |
| 2373 } | |
| 2374 else | |
| 2375 goto done; | |
| 2376 } | |
| 2377 state = STATE.STATE_binary; | |
| 2378 break; | |
| 2379 | |
| 2380 case STATE.STATE_error: // for error recovery | |
| 2381 if (!isdigit(c)) // scan until non-digit | |
| 2382 goto done; | |
| 2383 break; | |
| 2384 | |
| 2385 default: | |
| 2386 assert(0); | |
| 2387 } | |
| 2388 stringbuffer.writeByte(c); | |
| 2389 p++; | |
| 2390 } | |
| 2391 done: | |
| 2392 stringbuffer.writeByte(0); // terminate string | |
| 2393 if (state == STATE.STATE_octale) | |
| 2394 error("Octal digit expected"); | |
| 2395 | |
| 2396 ulong n; // unsigned >=64 bit integer type | |
| 2397 | |
| 2398 if (stringbuffer.offset == 2 && (state == STATE.STATE_decimal || state == STATE.STATE_0)) | |
| 2399 n = stringbuffer.data[0] - '0'; | |
| 2400 else | |
| 2401 { | |
| 2402 // Convert string to integer | |
| 2403 version (__DMC__) { | |
| 2404 errno = 0; | |
| 2405 n = strtoull(cast(char*)stringbuffer.data,null,base); | |
| 2406 if (errno == ERANGE) | |
| 2407 error("integer overflow"); | |
| 2408 } else { | |
| 2409 // Not everybody implements strtoull() | |
| 2410 char* p = cast(char*)stringbuffer.data; | |
| 2411 int r = 10, d; | |
| 2412 | |
| 2413 if (*p == '0') | |
| 2414 { | |
| 2415 if (p[1] == 'x' || p[1] == 'X') | |
| 2416 p += 2, r = 16; | |
| 2417 else if (p[1] == 'b' || p[1] == 'B') | |
| 2418 p += 2, r = 2; | |
| 2419 else if (isdigit(p[1])) | |
| 2420 p += 1, r = 8; | |
| 2421 } | |
| 2422 | |
| 2423 n = 0; | |
| 2424 while (1) | |
| 2425 { | |
| 2426 if (*p >= '0' && *p <= '9') | |
| 2427 d = *p - '0'; | |
| 2428 else if (*p >= 'a' && *p <= 'z') | |
| 2429 d = *p - 'a' + 10; | |
| 2430 else if (*p >= 'A' && *p <= 'Z') | |
| 2431 d = *p - 'A' + 10; | |
| 2432 else | |
| 2433 break; | |
| 2434 if (d >= r) | |
| 2435 break; | |
| 2436 ulong n2 = n * r; | |
| 2437 //printf("n2 / r = %llx, n = %llx\n", n2/r, n); | |
| 2438 if (n2 / r != n || n2 + d < n) | |
| 2439 { | |
| 2440 error ("integer overflow"); | |
| 2441 break; | |
| 2442 } | |
| 2443 | |
| 2444 n = n2 + d; | |
| 2445 p++; | |
| 2446 } | |
| 2447 } | |
| 2448 if (n.sizeof > 8 && | |
| 2449 n > 0xFFFFFFFFFFFFFFFF) // if n needs more than 64 bits | |
| 2450 error("integer overflow"); | |
| 2451 } | |
| 2452 | |
| 2453 // Parse trailing 'u', 'U', 'l' or 'L' in any combination | |
| 2454 while (1) | |
| 2455 { FLAGS f; | |
| 2456 | |
| 2457 switch (*p) | |
| 2458 { case 'U': | |
| 2459 case 'u': | |
| 2460 f = FLAGS.FLAGS_unsigned; | |
| 2461 goto L1; | |
| 2462 | |
| 2463 case 'l': | |
| 2464 if (1 || !global.params.useDeprecated) | |
| 2465 error("'l' suffix is deprecated, use 'L' instead"); | |
| 2466 case 'L': | |
| 2467 f = FLAGS.FLAGS_long; | |
| 2468 L1: | |
| 2469 p++; | |
| 2470 if (flags & f) | |
| 2471 error("unrecognized token"); | |
| 2472 flags = (flags | f); | |
| 2473 continue; | |
| 2474 default: | |
| 2475 break; | |
| 2476 } | |
| 2477 break; | |
| 2478 } | |
| 2479 | |
| 2480 switch (flags) | |
| 2481 { | |
| 2482 case FLAGS.FLAGS_undefined: | |
| 2483 /* Octal or Hexadecimal constant. | |
| 2484 * First that fits: int, uint, long, ulong | |
| 2485 */ | |
| 2486 if (n & 0x8000000000000000) | |
| 2487 result = TOK.TOKuns64v; | |
| 2488 else if (n & 0xFFFFFFFF00000000) | |
| 2489 result = TOK.TOKint64v; | |
| 2490 else if (n & 0x80000000) | |
| 2491 result = TOK.TOKuns32v; | |
| 2492 else | |
| 2493 result = TOK.TOKint32v; | |
| 2494 break; | |
| 2495 | |
| 2496 case FLAGS.FLAGS_decimal: | |
| 2497 /* First that fits: int, long, long long | |
| 2498 */ | |
| 2499 if (n & 0x8000000000000000) | |
| 2500 { error("signed integer overflow"); | |
| 2501 result = TOK.TOKuns64v; | |
| 2502 } | |
| 2503 else if (n & 0xFFFFFFFF80000000) | |
| 2504 result = TOK.TOKint64v; | |
| 2505 else | |
| 2506 result = TOK.TOKint32v; | |
| 2507 break; | |
| 2508 | |
| 2509 case FLAGS.FLAGS_unsigned: | |
| 2510 case FLAGS.FLAGS_decimal | FLAGS.FLAGS_unsigned: | |
| 2511 /* First that fits: uint, ulong | |
| 2512 */ | |
| 2513 if (n & 0xFFFFFFFF00000000) | |
| 2514 result = TOK.TOKuns64v; | |
| 2515 else | |
| 2516 result = TOK.TOKuns32v; | |
| 2517 break; | |
| 2518 | |
| 2519 case FLAGS.FLAGS_decimal | FLAGS.FLAGS_long: | |
| 2520 if (n & 0x8000000000000000) | |
| 2521 { error("signed integer overflow"); | |
| 2522 result = TOK.TOKuns64v; | |
| 2523 } | |
| 2524 else | |
| 2525 result = TOK.TOKint64v; | |
| 2526 break; | |
| 2527 | |
| 2528 case FLAGS.FLAGS_long: | |
| 2529 if (n & 0x8000000000000000) | |
| 2530 result = TOK.TOKuns64v; | |
| 2531 else | |
| 2532 result = TOK.TOKint64v; | |
| 2533 break; | |
| 2534 | |
| 2535 case FLAGS.FLAGS_unsigned | FLAGS.FLAGS_long: | |
| 2536 case FLAGS.FLAGS_decimal | FLAGS.FLAGS_unsigned | FLAGS.FLAGS_long: | |
| 2537 result = TOK.TOKuns64v; | |
| 2538 break; | |
| 2539 | |
| 2540 default: | |
| 2541 debug { | |
| 2542 printf("%x\n",flags); | |
| 2543 } | |
| 2544 assert(0); | |
| 2545 } | |
| 2546 t.uns64value = n; | |
| 2547 return result; | |
| 2548 } | |
| 2549 | |
| 2550 /************************************** | |
| 2551 * Read in characters, converting them to real. | |
| 2552 * Bugs: | |
| 2553 * Exponent overflow not detected. | |
| 2554 * Too much requested precision is not detected. | |
| 2555 */ | |
| 2556 TOK inreal(Token* t) | |
| 2557 in | |
| 2558 { | |
| 2559 assert(*p == '.' || isdigit(*p)); | |
| 2560 } | |
| 2561 out (result) | |
| 2562 { | |
| 2563 switch (result) | |
| 2564 { | |
| 2565 case TOKfloat32v: | |
| 2566 case TOKfloat64v: | |
| 2567 case TOKfloat80v: | |
| 2568 case TOKimaginary32v: | |
| 2569 case TOKimaginary64v: | |
| 2570 case TOKimaginary80v: | |
| 2571 break; | |
| 2572 | |
| 2573 default: | |
| 2574 assert(0); | |
| 2575 } | |
| 2576 } | |
| 2577 body | |
| 2578 { | |
| 2579 int dblstate; | |
| 2580 uint c; | |
| 2581 char hex; // is this a hexadecimal-floating-constant? | |
| 2582 TOK result; | |
| 2583 | |
| 2584 //printf("Lexer.inreal()\n"); | |
| 2585 stringbuffer.reset(); | |
| 2586 dblstate = 0; | |
| 2587 hex = 0; | |
| 2588 Lnext: | |
| 2589 while (true) | |
| 2590 { | |
| 2591 // Get next char from input | |
| 2592 c = *p++; | |
| 2593 //printf("dblstate = %d, c = '%c'\n", dblstate, c); | |
| 2594 while (true) | |
| 2595 { | |
| 2596 switch (dblstate) | |
| 2597 { | |
| 2598 case 0: // opening state | |
| 2599 if (c == '0') | |
| 2600 dblstate = 9; | |
| 2601 else if (c == '.') | |
| 2602 dblstate = 3; | |
| 2603 else | |
| 2604 dblstate = 1; | |
| 2605 break; | |
| 2606 | |
| 2607 case 9: | |
| 2608 dblstate = 1; | |
| 2609 if (c == 'X' || c == 'x') | |
| 2610 { | |
| 2611 hex++; | |
| 2612 break; | |
| 2613 } | |
| 2614 case 1: // digits to left of . | |
| 2615 case 3: // digits to right of . | |
| 2616 case 7: // continuing exponent digits | |
| 2617 if (!isdigit(c) && !(hex && isxdigit(c))) | |
| 2618 { | |
| 2619 if (c == '_') | |
| 2620 goto Lnext; // ignore embedded '_' | |
| 2621 dblstate++; | |
| 2622 continue; | |
| 2623 } | |
| 2624 break; | |
| 2625 | |
| 2626 case 2: // no more digits to left of . | |
| 2627 if (c == '.') | |
| 2628 { | |
| 2629 dblstate++; | |
| 2630 break; | |
| 2631 } | |
| 2632 case 4: // no more digits to right of . | |
| 2633 if ((c == 'E' || c == 'e') || | |
| 2634 hex && (c == 'P' || c == 'p')) | |
| 2635 { | |
| 2636 dblstate = 5; | |
| 2637 hex = 0; // exponent is always decimal | |
| 2638 break; | |
| 2639 } | |
| 2640 if (hex) | |
| 2641 error("binary-exponent-part required"); | |
| 2642 goto done; | |
| 2643 | |
| 2644 case 5: // looking immediately to right of E | |
| 2645 dblstate++; | |
| 2646 if (c == '-' || c == '+') | |
| 2647 break; | |
| 2648 case 6: // 1st exponent digit expected | |
| 2649 if (!isdigit(c)) | |
| 2650 error("exponent expected"); | |
| 2651 dblstate++; | |
| 2652 break; | |
| 2653 | |
| 2654 case 8: // past end of exponent digits | |
| 2655 goto done; | |
| 79 | 2656 |
| 2657 default: | |
| 2658 assert(0, "inreal.dblstate has unexpected value"); | |
| 0 | 2659 } |
| 2660 break; | |
| 2661 } | |
| 2662 stringbuffer.writeByte(c); | |
| 2663 } | |
| 2664 done: | |
| 2665 p--; | |
| 2666 | |
| 2667 stringbuffer.writeByte(0); | |
| 2668 | |
| 114 | 2669 version (Windows) { /// && __DMC__ |
| 0 | 2670 char* save = __locale_decpoint; |
| 2671 __locale_decpoint = cast(char*)".".ptr; | |
| 2672 } | |
| 2673 t.float80value = strtold(cast(char*)stringbuffer.data, null); | |
| 2674 | |
| 2675 errno = 0; | |
| 2676 switch (*p) | |
| 2677 { | |
| 2678 case 'F': | |
| 2679 case 'f': | |
| 2680 strtof(cast(char*)stringbuffer.data, null); | |
| 2681 result = TOKfloat32v; | |
| 2682 p++; | |
| 2683 break; | |
| 2684 | |
| 2685 default: | |
| 2686 strtod(cast(char*)stringbuffer.data, null); | |
| 2687 result = TOKfloat64v; | |
| 2688 break; | |
| 2689 | |
| 2690 case 'l': | |
| 2691 if (!global.params.useDeprecated) | |
| 2692 error("'l' suffix is deprecated, use 'L' instead"); | |
| 2693 case 'L': | |
| 2694 result = TOKfloat80v; | |
| 2695 p++; | |
| 2696 break; | |
| 2697 } | |
| 2698 if (*p == 'i' || *p == 'I') | |
| 2699 { | |
| 2700 if (!global.params.useDeprecated && *p == 'I') | |
| 2701 error("'I' suffix is deprecated, use 'i' instead"); | |
| 2702 p++; | |
| 2703 switch (result) | |
| 2704 { | |
| 2705 case TOKfloat32v: | |
| 2706 result = TOKimaginary32v; | |
| 2707 break; | |
| 2708 case TOKfloat64v: | |
| 2709 result = TOKimaginary64v; | |
| 2710 break; | |
| 2711 case TOKfloat80v: | |
| 2712 result = TOKimaginary80v; | |
| 2713 break; | |
| 2714 } | |
| 2715 } | |
| 2716 | |
| 114 | 2717 version (Windows) { ///&& __DMC__ |
| 0 | 2718 __locale_decpoint = save; |
| 2719 } | |
| 2720 if (errno == ERANGE) | |
| 2721 error("number is not representable"); | |
| 2722 | |
| 2723 return result; | |
| 2724 } | |
| 2725 | |
| 2726 void error(T...)(string format, T t) | |
| 2727 { | |
| 2728 error(this.loc, format, t); | |
| 2729 } | |
| 2730 | |
| 2731 void error(T...)(Loc loc, string format, T t) | |
| 2732 { | |
| 2733 if (mod && !global.gag) | |
| 2734 { | |
| 2735 string p = loc.toChars(); | |
| 2736 if (p.length != 0) | |
| 2737 writef("%s: ", p); | |
| 2738 | |
| 2739 writefln(format, t); | |
| 2740 | |
| 2741 if (global.errors >= 20) // moderate blizzard of cascading messages | |
| 2742 fatal(); | |
| 2743 } | |
| 2744 | |
| 2745 global.errors++; | |
| 2746 } | |
| 2747 | |
| 2748 void pragma_() | |
| 2749 { | |
| 2750 assert(false); | |
| 2751 } | |
| 2752 | |
| 49 | 2753 /******************************************** |
| 2754 * Decode UTF character. | |
| 2755 * Issue error messages for invalid sequences. | |
| 2756 * Return decoded character, advance p to last character in UTF sequence. | |
| 2757 */ | |
| 0 | 2758 uint decodeUTF() |
| 2759 { | |
| 49 | 2760 dchar u; |
| 2761 ubyte c; | |
| 2762 ubyte* s = p; | |
| 2763 size_t len; | |
| 2764 size_t idx; | |
| 2765 string msg; | |
| 2766 | |
| 2767 c = *s; | |
| 2768 assert(c & 0x80); | |
| 2769 | |
| 2770 // Check length of remaining string up to 6 UTF-8 characters | |
| 2771 for (len = 1; len < 6 && s[len]; len++) { | |
| 2772 ; | |
| 2773 } | |
| 2774 | |
| 2775 idx = 0; | |
| 2776 msg = utf_decodeChar(cast(string)s[0..len], &idx, &u); | |
| 2777 p += idx - 1; | |
| 2778 if (msg) | |
| 2779 { | |
| 2780 error("%s", msg); | |
| 2781 } | |
| 2782 return u; | |
| 0 | 2783 } |
| 2784 | |
| 2785 void getDocComment(Token* t, uint lineComment) | |
| 2786 { | |
| 2787 assert(false); | |
| 2788 } | |
| 2789 | |
| 2790 static bool isValidIdentifier(string p) | |
| 2791 { | |
| 2792 if (p.length == 0) { | |
| 2793 return false; | |
| 2794 } | |
| 2795 | |
| 2796 if (p[0] >= '0' && p[0] <= '9') { // beware of isdigit() on signed chars | |
| 2797 return false; | |
| 2798 } | |
| 2799 | |
| 2800 size_t idx = 0; | |
| 2801 while (idx < p.length) | |
| 2802 { | |
| 2803 dchar dc; | |
| 2804 | |
| 2805 if (utf_decodeChar(p, &idx, &dc) !is null) { | |
| 2806 return false; | |
| 2807 } | |
| 2808 | |
| 2809 if (!((dc >= 0x80 && isUniAlpha(dc)) || isalnum(dc) || dc == '_')) { | |
| 2810 return false; | |
| 2811 } | |
| 2812 } | |
| 2813 | |
| 2814 return true; | |
| 2815 } | |
| 2816 | |
| 79 | 2817 /// TODO: use normal string append when GC works |
| 2818 static string combineComments(const(char)[] c1, const(char)[] c2) | |
| 0 | 2819 { |
| 79 | 2820 //writef("Lexer.combineComments('%s', '%s')\n", c1, c2); |
| 0 | 2821 |
| 79 | 2822 char[] c = cast(char[]) c2; |
| 2823 | |
| 2824 if (c1 !is null) | |
| 0 | 2825 { |
| 79 | 2826 c = cast(char[]) c1; |
| 2827 if (c2 !is null) | |
| 0 | 2828 { |
| 79 | 2829 c = cast(char[]) (GC.malloc(c1.length + 1 + c2.length)[0 .. c1.length + 1 + c2.length]); |
| 2830 size_t len1 = c1.length; | |
| 2831 c[0..len1] = c1[]; | |
| 2832 c[len1++] = '\n'; | |
| 2833 c[len1 .. len1 + c2.length] = c2[]; | |
| 0 | 2834 } |
| 2835 } | |
| 79 | 2836 |
| 2837 return cast(string)c; | |
| 0 | 2838 } |
| 2839 } |