Mercurial > projects > ddmd
annotate dmd/Lexer.d @ 51:b7d29f613539
StaticAssertStatement.syntaxCopy
IfStatement.syntaxCopy
CompoundDeclarationStatement.syntaxCopy
VoidInitializer.syntaxCopy
TypeAArray.syntaxCopy
TypeTypeof.syntaxCopy
TypeAArray.resolve
TypeSArray.deduceType
TypeAArray.deduceType
TypeAArray.implicitConvTo
TemplateDeclaration.leastAsSpecialized
TemplateTypeParameter.dummyArg
TypeIdentifier.deduceType
TemplateTypeParameter.syntaxCopy
Lexer.hexStringConstant
Lexer.delimitedStringConstant
GotoDefaultStatement.ctor
CaseRangeStatement.ctor
Type.castMod
StorageClassDeclaration.syntaxCopy
TemplateDeclaration.syntaxCopy
| author | korDen |
|---|---|
| date | Sat, 21 Aug 2010 11:17:42 +0400 |
| parents | 0aa7d1437ada |
| children | ef02e2e203c2 |
| 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 | |
| 501 Token.tochars[TOK.TOKdotexp] = "dotexp"; | |
| 502 Token.tochars[TOK.TOKdotti] = "dotti"; | |
| 503 Token.tochars[TOK.TOKdotvar] = "dotvar"; | |
| 504 Token.tochars[TOK.TOKdottype] = "dottype"; | |
| 505 Token.tochars[TOK.TOKsymoff] = "symoff"; | |
| 506 Token.tochars[TOK.TOKarraylength] = "arraylength"; | |
| 507 Token.tochars[TOK.TOKarrayliteral] = "arrayliteral"; | |
| 508 Token.tochars[TOK.TOKassocarrayliteral] = "assocarrayliteral"; | |
| 509 Token.tochars[TOK.TOKstructliteral] = "structliteral"; | |
| 510 Token.tochars[TOK.TOKstring] = "string"; | |
| 511 Token.tochars[TOK.TOKdsymbol] = "symbol"; | |
| 512 Token.tochars[TOK.TOKtuple] = "tuple"; | |
| 513 Token.tochars[TOK.TOKdeclaration] = "declaration"; | |
| 514 Token.tochars[TOK.TOKdottd] = "dottd"; | |
| 515 Token.tochars[TOK.TOKon_scope_exit] = "scope(exit)"; | |
| 516 Token.tochars[TOK.TOKon_scope_success] = "scope(success)"; | |
| 517 Token.tochars[TOK.TOKon_scope_failure] = "scope(failure)"; | |
| 518 } | |
| 519 | |
| 520 static Identifier idPool(string s) | |
| 521 { | |
| 522 StringValue* sv = stringtable.update(s); | |
| 523 Identifier id = cast(Identifier) sv.ptrvalue; | |
| 524 if (id is null) | |
| 525 { | |
| 526 id = new Identifier(sv.lstring.string_, TOK.TOKidentifier); | |
| 527 sv.ptrvalue = cast(void*)id; | |
| 528 } | |
| 529 | |
| 530 return id; | |
| 531 } | |
| 532 | |
| 533 static Identifier uniqueId(string s) | |
| 534 { | |
| 535 static int num; | |
| 536 return uniqueId(s, ++num); | |
| 537 } | |
| 538 | |
| 539 /********************************************* | |
| 540 * Create a unique identifier using the prefix s. | |
| 541 */ | |
| 542 static Identifier uniqueId(string s, int num) | |
| 543 { | |
| 544 char buffer[32]; | |
| 545 size_t slen = s.length; | |
| 546 | |
| 547 assert(slen + num.sizeof * 3 + 1 <= buffer.sizeof); | |
| 548 int len = sprintf(buffer.ptr, "%.*s%d", s, num); | |
| 549 | |
| 550 return idPool(buffer[0..len].idup); | |
| 551 } | |
| 552 | |
| 553 TOK nextToken() | |
| 554 { | |
| 555 Token *t; | |
| 556 | |
| 557 if (token.next) | |
| 558 { | |
| 559 t = token.next; | |
| 560 memcpy(&token, t, Token.sizeof); | |
| 561 t.next = freelist; | |
| 562 freelist = t; | |
| 563 } | |
| 564 else | |
| 565 { | |
| 566 scan(&token); | |
| 567 } | |
| 568 | |
| 569 //token.print(); | |
| 570 return token.value; | |
| 571 } | |
| 572 | |
| 573 /*********************** | |
| 574 * Look ahead at next token's value. | |
| 575 */ | |
| 576 TOK peekNext() | |
| 577 { | |
| 578 return peek(&token).value; | |
| 579 } | |
| 580 | |
| 581 TOK peekNext2() | |
| 582 { | |
| 583 assert(false); | |
| 584 } | |
| 585 | |
| 586 void scan(Token* t) | |
| 587 { | |
| 588 uint lastLine = loc.linnum; | |
| 589 uint linnum; | |
| 590 | |
| 591 t.blockComment = null; | |
| 592 t.lineComment = null; | |
| 593 while (1) | |
| 594 { | |
| 595 t.ptr = p; | |
| 596 //printf("p = %p, *p = '%c'\n",p,*p); | |
| 597 switch (*p) | |
| 598 { | |
| 599 case 0: | |
| 600 case 0x1A: | |
| 601 t.value = TOK.TOKeof; // end of file | |
| 602 return; | |
| 603 | |
| 604 case ' ': | |
| 605 case '\t': | |
| 606 case '\v': | |
| 607 case '\f': | |
| 608 p++; | |
| 609 continue; // skip white space | |
| 610 | |
| 611 case '\r': | |
| 612 p++; | |
| 613 if (*p != '\n') // if CR stands by itself | |
| 614 loc.linnum++; | |
| 615 continue; // skip white space | |
| 616 | |
| 617 case '\n': | |
| 618 p++; | |
| 619 loc.linnum++; | |
| 620 continue; // skip white space | |
| 621 | |
| 622 case '0': case '1': case '2': case '3': case '4': | |
| 623 case '5': case '6': case '7': case '8': case '9': | |
| 624 t.value = number(t); | |
| 625 return; | |
| 626 | |
| 627 version (CSTRINGS) { | |
| 628 case '\'': | |
| 629 t.value = charConstant(t, 0); | |
| 630 return; | |
| 631 | |
| 632 case '"': | |
| 633 t.value = stringConstant(t,0); | |
| 634 return; | |
| 635 | |
| 636 case 'l': | |
| 637 case 'L': | |
| 638 if (p[1] == '\'') | |
| 639 { | |
| 640 p++; | |
| 641 t.value = charConstant(t, 1); | |
| 642 return; | |
| 643 } | |
| 644 else if (p[1] == '"') | |
| 645 { | |
| 646 p++; | |
| 647 t.value = stringConstant(t, 1); | |
| 648 return; | |
| 649 } | |
| 650 } else { | |
| 651 case '\'': | |
| 652 t.value = charConstant(t,0); | |
| 653 return; | |
| 654 | |
| 655 case 'r': | |
| 656 if (p[1] != '"') | |
| 657 goto case_ident; | |
| 658 p++; | |
| 659 case '`': | |
| 660 t.value = wysiwygStringConstant(t, *p); | |
| 661 return; | |
| 662 | |
| 663 case 'x': | |
| 664 if (p[1] != '"') | |
| 665 goto case_ident; | |
| 666 p++; | |
| 667 t.value = hexStringConstant(t); | |
| 668 return; | |
| 669 | |
| 670 version (DMDV2) { | |
| 671 case 'q': | |
| 672 if (p[1] == '"') | |
| 673 { | |
| 674 p++; | |
| 675 t.value = delimitedStringConstant(t); | |
| 676 return; | |
| 677 } | |
| 678 else if (p[1] == '{') | |
| 679 { | |
| 680 p++; | |
| 681 t.value = tokenStringConstant(t); | |
| 682 return; | |
| 683 } | |
| 684 else | |
| 685 goto case_ident; | |
| 686 } | |
| 687 | |
| 688 case '"': | |
| 689 t.value = escapeStringConstant(t,0); | |
| 690 return; | |
| 691 version (TEXTUAL_ASSEMBLY_OUT) { | |
| 692 } else { | |
| 693 case '\\': // escaped string literal | |
| 694 { uint c; | |
| 695 ubyte* pstart = p; | |
| 696 | |
| 697 stringbuffer.reset(); | |
| 698 do | |
| 699 { | |
| 700 p++; | |
| 701 switch (*p) | |
| 702 { | |
| 703 case 'u': | |
| 704 case 'U': | |
| 705 case '&': | |
| 706 c = escapeSequence(); | |
| 707 stringbuffer.writeUTF8(c); | |
| 708 break; | |
| 709 | |
| 710 default: | |
| 711 c = escapeSequence(); | |
| 712 stringbuffer.writeByte(c); | |
| 713 break; | |
| 714 } | |
| 715 } while (*p == '\\'); | |
| 716 t.len = stringbuffer.offset; | |
| 717 stringbuffer.writeByte(0); | |
| 2 | 718 char* cc = cast(char*)GC.malloc(stringbuffer.offset); |
| 0 | 719 memcpy(cc, stringbuffer.data, stringbuffer.offset); |
| 720 t.ustring = cc; | |
| 721 t.postfix = 0; | |
| 722 t.value = TOK.TOKstring; | |
| 723 if (!global.params.useDeprecated) | |
| 724 error("Escape String literal %.*s is deprecated, use double quoted string literal \"%.*s\" instead", p - pstart, pstart, p - pstart, pstart); | |
| 725 return; | |
| 726 } | |
| 727 } | |
| 728 case 'l': | |
| 729 case 'L': | |
| 730 } | |
| 731 case 'a': case 'b': case 'c': case 'd': case 'e': | |
| 732 case 'f': case 'g': case 'h': case 'i': case 'j': | |
| 733 case 'k': case 'm': case 'n': case 'o': | |
| 734 version (DMDV2) { | |
| 735 case 'p': /*case 'q': case 'r':*/ case 's': case 't': | |
| 736 } else { | |
| 737 case 'p': case 'q': /*case 'r':*/ case 's': case 't': | |
| 738 } | |
| 739 case 'u': case 'v': case 'w': /*case 'x':*/ case 'y': | |
| 740 case 'z': | |
| 741 case 'A': case 'B': case 'C': case 'D': case 'E': | |
| 742 case 'F': case 'G': case 'H': case 'I': case 'J': | |
| 743 case 'K': case 'M': case 'N': case 'O': | |
| 744 case 'P': case 'Q': case 'R': case 'S': case 'T': | |
| 745 case 'U': case 'V': case 'W': case 'X': case 'Y': | |
| 746 case 'Z': | |
| 747 case '_': | |
| 748 case_ident: | |
| 749 { ubyte c; | |
| 750 StringValue *sv; | |
| 751 Identifier id; | |
| 752 | |
| 753 do | |
| 754 { | |
| 755 c = *++p; | |
| 756 } while (isidchar(c) || (c & 0x80 && isUniAlpha(decodeUTF()))); | |
| 757 sv = stringtable.update((cast(immutable(char)*)t.ptr)[0.. p - t.ptr]); /// | |
| 758 id = cast(Identifier) sv.ptrvalue; | |
| 759 if (id is null) | |
| 760 { id = new Identifier(sv.lstring.string_, TOK.TOKidentifier); | |
| 761 sv.ptrvalue = cast(void*)id; | |
| 762 } | |
| 763 t.ident = id; | |
| 764 t.value = cast(TOK) id.value; | |
| 765 anyToken = 1; | |
| 766 if (*t.ptr == '_') // if special identifier token | |
| 767 { | |
| 768 static char date[11+1]; | |
| 769 static char time[8+1]; | |
| 770 static char timestamp[24+1]; | |
| 771 | |
| 772 if (!date[0]) // lazy evaluation | |
| 773 { time_t tm; | |
| 774 char *p; | |
| 775 | |
| 776 .time(&tm); | |
| 777 p = ctime(&tm); | |
| 778 assert(p); | |
| 779 sprintf(date.ptr, "%.6s %.4s", p + 4, p + 20); | |
| 780 sprintf(time.ptr, "%.8s", p + 11); | |
| 781 sprintf(timestamp.ptr, "%.24s", p); | |
| 782 } | |
| 783 | |
| 784 ///version (DMDV1) { | |
| 785 /// if (mod && id == Id.FILE) | |
| 786 /// { | |
| 787 /// t.ustring = cast(ubyte*)(loc.filename ? loc.filename : mod.ident.toChars()); | |
| 788 /// goto Lstr; | |
| 789 /// } | |
| 790 /// else if (mod && id == Id.LINE) | |
| 791 /// { | |
| 792 /// t.value = TOK.TOKint64v; | |
| 793 /// t.uns64value = loc.linnum; | |
| 794 /// } | |
| 795 /// else | |
| 796 ///} | |
| 797 if (id == Id.DATE) | |
| 798 { | |
| 799 t.ustring = date.ptr; | |
| 800 goto Lstr; | |
| 801 } | |
| 802 else if (id == Id.TIME) | |
| 803 { | |
| 804 t.ustring = time.ptr; | |
| 805 goto Lstr; | |
| 806 } | |
| 807 else if (id == Id.VENDOR) | |
| 808 { | |
| 809 t.ustring = "Digital Mars D".ptr; | |
| 810 goto Lstr; | |
| 811 } | |
| 812 else if (id == Id.TIMESTAMP) | |
| 813 { | |
| 814 t.ustring = timestamp.ptr; | |
| 815 Lstr: | |
| 816 t.value = TOK.TOKstring; | |
| 817 Llen: | |
| 818 t.postfix = 0; | |
| 819 t.len = strlen(cast(char*)t.ustring); | |
| 820 } | |
| 821 else if (id == Id.VERSIONX) | |
| 822 { | |
| 823 uint major = 0; | |
| 824 uint minor = 0; | |
| 825 | |
| 826 foreach (char cc; global.version_[1..$]) | |
| 827 { | |
| 828 if (isdigit(cc)) | |
| 829 minor = minor * 10 + cc - '0'; | |
| 830 else if (cc == '.') | |
| 831 { | |
| 832 major = minor; | |
| 833 minor = 0; | |
| 834 } | |
| 835 else | |
| 836 break; | |
| 837 } | |
| 838 t.value = TOK.TOKint64v; | |
| 839 t.uns64value = major * 1000 + minor; | |
| 840 } | |
| 841 ///version (DMDV2) { | |
| 842 else if (id == Id.EOFX) | |
| 843 { | |
| 844 t.value = TOK.TOKeof; | |
| 845 // Advance scanner to end of file | |
| 846 while (!(*p == 0 || *p == 0x1A)) | |
| 847 p++; | |
| 848 } | |
| 849 ///} | |
| 850 } | |
| 851 //printf("t.value = %d\n",t.value); | |
| 852 return; | |
| 853 } | |
| 854 | |
| 855 case '/': | |
| 856 p++; | |
| 857 switch (*p) | |
| 858 { | |
| 859 case '=': | |
| 860 p++; | |
| 861 t.value = TOK.TOKdivass; | |
| 862 return; | |
| 863 | |
| 864 case '*': | |
| 865 p++; | |
| 866 linnum = loc.linnum; | |
| 867 while (1) | |
| 868 { | |
| 869 while (1) | |
| 870 { | |
| 871 ubyte c = *p; | |
| 872 switch (c) | |
| 873 { | |
| 874 case '/': | |
| 875 break; | |
| 876 | |
| 877 case '\n': | |
| 878 loc.linnum++; | |
| 879 p++; | |
| 880 continue; | |
| 881 | |
| 882 case '\r': | |
| 883 p++; | |
| 884 if (*p != '\n') | |
| 885 loc.linnum++; | |
| 886 continue; | |
| 887 | |
| 888 case 0: | |
| 889 case 0x1A: | |
| 890 error("unterminated /* */ comment"); | |
| 891 p = end; | |
| 892 t.value = TOK.TOKeof; | |
| 893 return; | |
| 894 | |
| 895 default: | |
| 896 if (c & 0x80) | |
| 897 { uint u = decodeUTF(); | |
| 898 if (u == PS || u == LS) | |
| 899 loc.linnum++; | |
| 900 } | |
| 901 p++; | |
| 902 continue; | |
| 903 } | |
| 904 break; | |
| 905 } | |
| 906 p++; | |
| 907 if (p[-2] == '*' && p - 3 != t.ptr) | |
| 908 break; | |
| 909 } | |
| 910 if (commentToken) | |
| 911 { | |
| 912 t.value = TOK.TOKcomment; | |
| 913 return; | |
| 914 } | |
| 915 else if (doDocComment && t.ptr[2] == '*' && p - 4 != t.ptr) | |
| 916 { // if /** but not /**/ | |
| 917 getDocComment(t, lastLine == linnum); | |
| 918 } | |
| 919 continue; | |
| 920 | |
| 921 case '/': // do // style comments | |
| 922 linnum = loc.linnum; | |
| 923 while (1) | |
| 924 { ubyte c = *++p; | |
| 925 switch (c) | |
| 926 { | |
| 927 case '\n': | |
| 928 break; | |
| 929 | |
| 930 case '\r': | |
| 931 if (p[1] == '\n') | |
| 932 p++; | |
| 933 break; | |
| 934 | |
| 935 case 0: | |
| 936 case 0x1A: | |
| 937 if (commentToken) | |
| 938 { | |
| 939 p = end; | |
| 940 t.value = TOK.TOKcomment; | |
| 941 return; | |
| 942 } | |
| 943 if (doDocComment && t.ptr[2] == '/') | |
| 944 getDocComment(t, lastLine == linnum); | |
| 945 p = end; | |
| 946 t.value = TOK.TOKeof; | |
| 947 return; | |
| 948 | |
| 949 default: | |
| 950 if (c & 0x80) | |
| 951 { uint u = decodeUTF(); | |
| 952 if (u == PS || u == LS) | |
| 953 break; | |
| 954 } | |
| 955 continue; | |
| 956 } | |
| 957 break; | |
| 958 } | |
| 959 | |
| 960 if (commentToken) | |
| 961 { | |
| 962 p++; | |
| 963 loc.linnum++; | |
| 964 t.value = TOK.TOKcomment; | |
| 965 return; | |
| 966 } | |
| 967 if (doDocComment && t.ptr[2] == '/') | |
| 968 getDocComment(t, lastLine == linnum); | |
| 969 | |
| 970 p++; | |
| 971 loc.linnum++; | |
| 972 continue; | |
| 973 | |
| 974 case '+': | |
| 975 { | |
| 976 int nest; | |
| 977 | |
| 978 linnum = loc.linnum; | |
| 979 p++; | |
| 980 nest = 1; | |
| 981 while (1) | |
| 982 { ubyte c = *p; | |
| 983 switch (c) | |
| 984 { | |
| 985 case '/': | |
| 986 p++; | |
| 987 if (*p == '+') | |
| 988 { | |
| 989 p++; | |
| 990 nest++; | |
| 991 } | |
| 992 continue; | |
| 993 | |
| 994 case '+': | |
| 995 p++; | |
| 996 if (*p == '/') | |
| 997 { | |
| 998 p++; | |
| 999 if (--nest == 0) | |
| 1000 break; | |
| 1001 } | |
| 1002 continue; | |
| 1003 | |
| 1004 case '\r': | |
| 1005 p++; | |
| 1006 if (*p != '\n') | |
| 1007 loc.linnum++; | |
| 1008 continue; | |
| 1009 | |
| 1010 case '\n': | |
| 1011 loc.linnum++; | |
| 1012 p++; | |
| 1013 continue; | |
| 1014 | |
| 1015 case 0: | |
| 1016 case 0x1A: | |
| 1017 error("unterminated /+ +/ comment"); | |
| 1018 p = end; | |
| 1019 t.value = TOK.TOKeof; | |
| 1020 return; | |
| 1021 | |
| 1022 default: | |
| 1023 if (c & 0x80) | |
| 1024 { uint u = decodeUTF(); | |
| 1025 if (u == PS || u == LS) | |
| 1026 loc.linnum++; | |
| 1027 } | |
| 1028 p++; | |
| 1029 continue; | |
| 1030 } | |
| 1031 break; | |
| 1032 } | |
| 1033 if (commentToken) | |
| 1034 { | |
| 1035 t.value = TOK.TOKcomment; | |
| 1036 return; | |
| 1037 } | |
| 1038 if (doDocComment && t.ptr[2] == '+' && p - 4 != t.ptr) | |
| 1039 { // if /++ but not /++/ | |
| 1040 getDocComment(t, lastLine == linnum); | |
| 1041 } | |
| 1042 continue; | |
| 1043 } | |
| 1044 | |
| 1045 default: | |
| 1046 break; /// | |
| 1047 } | |
| 1048 t.value = TOK.TOKdiv; | |
| 1049 return; | |
| 1050 | |
| 1051 case '.': | |
| 1052 p++; | |
| 1053 if (isdigit(*p)) | |
| 1054 { /* Note that we don't allow ._1 and ._ as being | |
| 1055 * valid floating point numbers. | |
| 1056 */ | |
| 1057 p--; | |
| 1058 t.value = inreal(t); | |
| 1059 } | |
| 1060 else if (p[0] == '.') | |
| 1061 { | |
| 1062 if (p[1] == '.') | |
| 1063 { p += 2; | |
| 1064 t.value = TOK.TOKdotdotdot; | |
| 1065 } | |
| 1066 else | |
| 1067 { p++; | |
| 1068 t.value = TOK.TOKslice; | |
| 1069 } | |
| 1070 } | |
| 1071 else | |
| 1072 t.value = TOK.TOKdot; | |
| 1073 return; | |
| 1074 | |
| 1075 case '&': | |
| 1076 p++; | |
| 1077 if (*p == '=') | |
| 1078 { p++; | |
| 1079 t.value = TOK.TOKandass; | |
| 1080 } | |
| 1081 else if (*p == '&') | |
| 1082 { p++; | |
| 1083 t.value = TOK.TOKandand; | |
| 1084 } | |
| 1085 else | |
| 1086 t.value = TOK.TOKand; | |
| 1087 return; | |
| 1088 | |
| 1089 case '|': | |
| 1090 p++; | |
| 1091 if (*p == '=') | |
| 1092 { p++; | |
| 1093 t.value = TOK.TOKorass; | |
| 1094 } | |
| 1095 else if (*p == '|') | |
| 1096 { p++; | |
| 1097 t.value = TOK.TOKoror; | |
| 1098 } | |
| 1099 else | |
| 1100 t.value = TOK.TOKor; | |
| 1101 return; | |
| 1102 | |
| 1103 case '-': | |
| 1104 p++; | |
| 1105 if (*p == '=') | |
| 1106 { p++; | |
| 1107 t.value = TOK.TOKminass; | |
| 1108 } | |
| 1109 /// #if 0 | |
| 1110 /// else if (*p == '>') | |
| 1111 /// { p++; | |
| 1112 /// t.value = TOK.TOKarrow; | |
| 1113 /// } | |
| 1114 /// #endif | |
| 1115 else if (*p == '-') | |
| 1116 { p++; | |
| 1117 t.value = TOK.TOKminusminus; | |
| 1118 } | |
| 1119 else | |
| 1120 t.value = TOK.TOKmin; | |
| 1121 return; | |
| 1122 | |
| 1123 case '+': | |
| 1124 p++; | |
| 1125 if (*p == '=') | |
| 1126 { p++; | |
| 1127 t.value = TOK.TOKaddass; | |
| 1128 } | |
| 1129 else if (*p == '+') | |
| 1130 { p++; | |
| 1131 t.value = TOK.TOKplusplus; | |
| 1132 } | |
| 1133 else | |
| 1134 t.value = TOK.TOKadd; | |
| 1135 return; | |
| 1136 | |
| 1137 case '<': | |
| 1138 p++; | |
| 1139 if (*p == '=') | |
| 1140 { p++; | |
| 1141 t.value = TOK.TOKle; // <= | |
| 1142 } | |
| 1143 else if (*p == '<') | |
| 1144 { p++; | |
| 1145 if (*p == '=') | |
| 1146 { p++; | |
| 1147 t.value = TOK.TOKshlass; // <<= | |
| 1148 } | |
| 1149 else | |
| 1150 t.value = TOK.TOKshl; // << | |
| 1151 } | |
| 1152 else if (*p == '>') | |
| 1153 { p++; | |
| 1154 if (*p == '=') | |
| 1155 { p++; | |
| 1156 t.value = TOK.TOKleg; // <>= | |
| 1157 } | |
| 1158 else | |
| 1159 t.value = TOK.TOKlg; // <> | |
| 1160 } | |
| 1161 else | |
| 1162 t.value = TOK.TOKlt; // < | |
| 1163 return; | |
| 1164 | |
| 1165 case '>': | |
| 1166 p++; | |
| 1167 if (*p == '=') | |
| 1168 { p++; | |
| 1169 t.value = TOK.TOKge; // >= | |
| 1170 } | |
| 1171 else if (*p == '>') | |
| 1172 { p++; | |
| 1173 if (*p == '=') | |
| 1174 { p++; | |
| 1175 t.value = TOK.TOKshrass; // >>= | |
| 1176 } | |
| 1177 else if (*p == '>') | |
| 1178 { p++; | |
| 1179 if (*p == '=') | |
| 1180 { p++; | |
| 1181 t.value = TOK.TOKushrass; // >>>= | |
| 1182 } | |
| 1183 else | |
| 1184 t.value = TOK.TOKushr; // >>> | |
| 1185 } | |
| 1186 else | |
| 1187 t.value = TOK.TOKshr; // >> | |
| 1188 } | |
| 1189 else | |
| 1190 t.value = TOK.TOKgt; // > | |
| 1191 return; | |
| 1192 | |
| 1193 case '!': | |
| 1194 p++; | |
| 1195 if (*p == '=') | |
| 1196 { p++; | |
| 1197 if (*p == '=' && global.params.Dversion == 1) | |
| 1198 { p++; | |
| 1199 t.value = TOK.TOKnotidentity; // !== | |
| 1200 } | |
| 1201 else | |
| 1202 t.value = TOK.TOKnotequal; // != | |
| 1203 } | |
| 1204 else if (*p == '<') | |
| 1205 { p++; | |
| 1206 if (*p == '>') | |
| 1207 { p++; | |
| 1208 if (*p == '=') | |
| 1209 { p++; | |
| 1210 t.value = TOK.TOKunord; // !<>= | |
| 1211 } | |
| 1212 else | |
| 1213 t.value = TOK.TOKue; // !<> | |
| 1214 } | |
| 1215 else if (*p == '=') | |
| 1216 { p++; | |
| 1217 t.value = TOK.TOKug; // !<= | |
| 1218 } | |
| 1219 else | |
| 1220 t.value = TOK.TOKuge; // !< | |
| 1221 } | |
| 1222 else if (*p == '>') | |
| 1223 { p++; | |
| 1224 if (*p == '=') | |
| 1225 { p++; | |
| 1226 t.value = TOK.TOKul; // !>= | |
| 1227 } | |
| 1228 else | |
| 1229 t.value = TOK.TOKule; // !> | |
| 1230 } | |
| 1231 else | |
| 1232 t.value = TOK.TOKnot; // ! | |
| 1233 return; | |
| 1234 | |
| 1235 case '=': | |
| 1236 p++; | |
| 1237 if (*p == '=') | |
| 1238 { p++; | |
| 1239 if (*p == '=' && global.params.Dversion == 1) | |
| 1240 { p++; | |
| 1241 t.value = TOK.TOKidentity; // === | |
| 1242 } | |
| 1243 else | |
| 1244 t.value = TOK.TOKequal; // == | |
| 1245 } | |
| 1246 else | |
| 1247 t.value = TOK.TOKassign; // = | |
| 1248 return; | |
| 1249 | |
| 1250 case '~': | |
| 1251 p++; | |
| 1252 if (*p == '=') | |
| 1253 { p++; | |
| 1254 t.value = TOK.TOKcatass; // ~= | |
| 1255 } | |
| 1256 else | |
| 1257 t.value = TOK.TOKtilde; // ~ | |
| 1258 return; | |
| 1259 /* | |
| 1260 #define SINGLE(c,tok) case c: p++; t.value = tok; return; | |
| 1261 | |
| 1262 SINGLE('(', TOKlparen) | |
| 1263 SINGLE(')', TOKrparen) | |
| 1264 SINGLE('[', TOKlbracket) | |
| 1265 SINGLE(']', TOKrbracket) | |
| 1266 SINGLE('{', TOKlcurly) | |
| 1267 SINGLE('}', TOKrcurly) | |
| 1268 SINGLE('?', TOKquestion) | |
| 1269 SINGLE(',', TOKcomma) | |
| 1270 SINGLE(';', TOKsemicolon) | |
| 1271 SINGLE(':', TOKcolon) | |
| 1272 SINGLE('$', TOKdollar) | |
| 1273 SINGLE('@', TOKat) | |
| 1274 | |
| 1275 #undef SINGLE | |
| 1276 | |
| 1277 #define DOUBLE(c1,tok1,c2,tok2) \ | |
| 1278 case c1: \ | |
| 1279 p++; \ | |
| 1280 if (*p == c2) \ | |
| 1281 { p++; \ | |
| 1282 t.value = tok2; \ | |
| 1283 } \ | |
| 1284 else \ | |
| 1285 t.value = tok1; \ | |
| 1286 return; | |
| 1287 | |
| 1288 DOUBLE('*', TOKmul, '=', TOKmulass) | |
| 1289 DOUBLE('%', TOKmod, '=', TOKmodass) | |
| 1290 DOUBLE('^', TOKxor, '=', TOKxorass) | |
| 1291 | |
| 1292 #undef DOUBLE | |
| 1293 */ | |
| 1294 | |
| 1295 case '(': p++; t.value = TOK.TOKlparen; return; | |
| 1296 case ')': p++; t.value = TOK.TOKrparen; return; | |
| 1297 case '[': p++; t.value = TOK.TOKlbracket; return; | |
| 1298 case ']': p++; t.value = TOK.TOKrbracket; return; | |
| 1299 case '{': p++; t.value = TOK.TOKlcurly; return; | |
| 1300 case '}': p++; t.value = TOK.TOKrcurly; return; | |
| 1301 case '?': p++; t.value = TOK.TOKquestion; return; | |
| 1302 case ',': p++; t.value = TOK.TOKcomma; return; | |
| 1303 case ';': p++; t.value = TOK.TOKsemicolon; return; | |
| 1304 case ':': p++; t.value = TOK.TOKcolon; return; | |
| 1305 case '$': p++; t.value = TOK.TOKdollar; return; | |
| 1306 case '@': p++; t.value = TOK.TOKat; return; | |
| 1307 | |
| 1308 case '*': | |
| 1309 p++; | |
| 1310 if (*p == '=') { | |
| 1311 p++; | |
| 1312 t.value = TOK.TOKmulass; | |
| 1313 } else { | |
| 1314 t.value = TOK.TOKmul; | |
| 1315 } | |
| 1316 return; | |
| 1317 | |
| 1318 case '%': | |
| 1319 p++; | |
| 1320 if (*p == '=') { | |
| 1321 p++; | |
| 1322 t.value = TOK.TOKmodass; | |
| 1323 } else { | |
| 1324 t.value = TOK.TOKmod; | |
| 1325 } | |
| 1326 return; | |
| 1327 | |
| 1328 case '^': | |
| 1329 p++; | |
| 1330 if (*p == '=') { | |
| 1331 p++; | |
| 1332 t.value = TOK.TOKxorass; | |
| 1333 } else { | |
| 1334 t.value = TOK.TOKxor; | |
| 1335 } | |
| 1336 return; | |
| 1337 | |
| 1338 case '#': | |
| 1339 p++; | |
| 1340 pragma_(); | |
| 1341 continue; | |
| 1342 | |
| 1343 default: | |
| 1344 { ubyte c = *p; | |
| 1345 | |
| 1346 if (c & 0x80) | |
| 1347 { uint u = decodeUTF(); | |
| 1348 | |
| 1349 // Check for start of unicode identifier | |
| 1350 if (isUniAlpha(u)) | |
| 1351 goto case_ident; | |
| 1352 | |
| 1353 if (u == PS || u == LS) | |
| 1354 { | |
| 1355 loc.linnum++; | |
| 1356 p++; | |
| 1357 continue; | |
| 1358 } | |
| 1359 } | |
| 1360 if (isprint(c)) | |
| 1361 error("unsupported char '%c'", c); | |
| 1362 else | |
| 1363 error("unsupported char 0x%02x", c); | |
| 1364 p++; | |
| 1365 continue; | |
| 1366 } | |
| 1367 } | |
| 1368 } | |
| 1369 } | |
| 1370 | |
| 1371 Token* peek(Token* ct) | |
| 1372 { | |
| 1373 Token* t; | |
| 1374 | |
| 1375 if (ct.next) | |
| 1376 t = ct.next; | |
| 1377 else | |
| 1378 { | |
| 1379 t = new Token(); | |
| 1380 scan(t); | |
| 1381 t.next = null; | |
| 1382 ct.next = t; | |
| 1383 } | |
| 1384 return t; | |
| 1385 } | |
| 1386 | |
| 1387 Token* peekPastParen(Token* tk) | |
| 1388 { | |
| 1389 //printf("peekPastParen()\n"); | |
| 1390 int parens = 1; | |
| 1391 int curlynest = 0; | |
| 1392 while (1) | |
| 1393 { | |
| 1394 tk = peek(tk); | |
| 1395 //tk.print(); | |
| 1396 switch (tk.value) | |
| 1397 { | |
| 1398 case TOK.TOKlparen: | |
| 1399 parens++; | |
| 1400 continue; | |
| 1401 | |
| 1402 case TOK.TOKrparen: | |
| 1403 --parens; | |
| 1404 if (parens) | |
| 1405 continue; | |
| 1406 tk = peek(tk); | |
| 1407 break; | |
| 1408 | |
| 1409 case TOK.TOKlcurly: | |
| 1410 curlynest++; | |
| 1411 continue; | |
| 1412 | |
| 1413 case TOK.TOKrcurly: | |
| 1414 if (--curlynest >= 0) | |
| 1415 continue; | |
| 1416 break; | |
| 1417 | |
| 1418 case TOK.TOKsemicolon: | |
| 1419 if (curlynest) | |
| 1420 continue; | |
| 1421 break; | |
| 1422 | |
| 1423 case TOK.TOKeof: | |
| 1424 break; | |
| 1425 | |
| 1426 default: | |
| 1427 continue; | |
| 1428 } | |
| 1429 return tk; | |
| 1430 } | |
| 1431 } | |
| 1432 | |
| 1433 /******************************************* | |
| 1434 * Parse escape sequence. | |
| 1435 */ | |
| 1436 uint escapeSequence() | |
| 1437 { | |
| 1438 uint c = *p; | |
| 1439 | |
| 1440 version (TEXTUAL_ASSEMBLY_OUT) { | |
| 1441 return c; | |
| 1442 } | |
| 1443 int n; | |
| 1444 int ndigits; | |
| 1445 | |
| 1446 switch (c) | |
| 1447 { | |
| 1448 case '\'': | |
| 1449 case '"': | |
| 1450 case '?': | |
| 1451 case '\\': | |
| 1452 Lconsume: | |
| 1453 p++; | |
| 1454 break; | |
| 1455 | |
| 1456 case 'a': c = 7; goto Lconsume; | |
| 1457 case 'b': c = 8; goto Lconsume; | |
| 1458 case 'f': c = 12; goto Lconsume; | |
| 1459 case 'n': c = 10; goto Lconsume; | |
| 1460 case 'r': c = 13; goto Lconsume; | |
| 1461 case 't': c = 9; goto Lconsume; | |
| 1462 case 'v': c = 11; goto Lconsume; | |
| 1463 | |
| 1464 case 'u': | |
| 1465 ndigits = 4; | |
| 1466 goto Lhex; | |
| 1467 case 'U': | |
| 1468 ndigits = 8; | |
| 1469 goto Lhex; | |
| 1470 case 'x': | |
| 1471 ndigits = 2; | |
| 1472 Lhex: | |
| 1473 p++; | |
| 1474 c = *p; | |
| 1475 if (ishex(cast(ubyte)c)) | |
| 1476 { | |
| 1477 uint v; | |
| 1478 | |
| 1479 n = 0; | |
| 1480 v = 0; | |
| 1481 while (1) | |
| 1482 { | |
| 1483 if (isdigit(c)) | |
| 1484 c -= '0'; | |
| 1485 else if (islower(c)) | |
| 1486 c -= 'a' - 10; | |
| 1487 else | |
| 1488 c -= 'A' - 10; | |
| 1489 v = v * 16 + c; | |
| 1490 c = *++p; | |
| 1491 if (++n == ndigits) | |
| 1492 break; | |
| 1493 if (!ishex(cast(ubyte)c)) | |
| 1494 { error("escape hex sequence has %d hex digits instead of %d", n, ndigits); | |
| 1495 break; | |
| 1496 } | |
| 1497 } | |
| 1498 if (ndigits != 2 && !utf_isValidDchar(v)) | |
| 1499 { error("invalid UTF character \\U%08x", v); | |
| 1500 v = '?'; // recover with valid UTF character | |
| 1501 } | |
| 1502 c = v; | |
| 1503 } | |
| 1504 else | |
| 1505 error("undefined escape hex sequence \\%c\n",c); | |
| 1506 break; | |
| 1507 | |
| 1508 case '&': // named character entity | |
| 1509 for (ubyte* idstart = ++p; true; p++) | |
| 1510 { | |
| 1511 switch (*p) | |
| 1512 { | |
| 1513 case ';': | |
| 1514 c = HtmlNamedEntity(idstart, p - idstart); | |
| 1515 if (c == ~0) | |
| 1516 { | |
| 1517 error("unnamed character entity &%s;", idstart[0..(p - idstart)]); | |
| 1518 c = ' '; | |
| 1519 } | |
| 1520 p++; | |
| 1521 break; | |
| 1522 | |
| 1523 default: | |
| 1524 if (isalpha(*p) || | |
| 1525 (p != idstart + 1 && isdigit(*p))) | |
| 1526 continue; | |
| 1527 error("unterminated named entity"); | |
| 1528 break; | |
| 1529 } | |
| 1530 break; | |
| 1531 } | |
| 1532 break; | |
| 1533 | |
| 1534 case 0: | |
| 1535 case 0x1A: // end of file | |
| 1536 c = '\\'; | |
| 1537 break; | |
| 1538 | |
| 1539 default: | |
| 1540 if (isoctal(cast(ubyte)c)) | |
| 1541 { | |
| 1542 uint v; | |
| 1543 | |
| 1544 n = 0; | |
| 1545 v = 0; | |
| 1546 do | |
| 1547 { | |
| 1548 v = v * 8 + (c - '0'); | |
| 1549 c = *++p; | |
| 1550 } while (++n < 3 && isoctal(cast(ubyte)c)); | |
| 1551 c = v; | |
| 1552 if (c > 0xFF) | |
| 1553 error("0%03o is larger than a byte", c); | |
| 1554 } | |
| 1555 else | |
| 1556 error("undefined escape sequence \\%c\n",c); | |
| 1557 break; | |
| 1558 } | |
| 1559 return c; | |
| 1560 } | |
| 1561 | |
| 1562 TOK wysiwygStringConstant(Token* t, int tc) | |
| 1563 { | |
|
8
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1564 uint c; |
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1565 Loc start = loc; |
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1566 |
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1567 p++; |
|
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1568 stringbuffer.reset(); |
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1569 while (true) |
|
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1570 { |
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1571 c = *p++; |
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1572 switch (c) |
|
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|
1573 { |
|
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1574 case '\n': |
|
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1575 loc.linnum++; |
|
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|
1576 break; |
|
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|
1577 |
|
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1578 case '\r': |
|
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1579 if (*p == '\n') |
|
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|
1580 continue; // ignore |
|
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|
1581 c = '\n'; // treat EndOfLine as \n character |
|
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|
1582 loc.linnum++; |
|
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|
1583 break; |
|
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|
1584 |
|
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1585 case 0: |
|
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|
1586 case 0x1A: |
|
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|
1587 error("unterminated string constant starting at %s", start.toChars()); |
|
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1588 t.ustring = "".ptr; |
|
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|
1589 t.len = 0; |
|
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|
1590 t.postfix = 0; |
|
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|
1591 return TOKstring; |
|
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|
1592 |
|
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|
1593 case '"': |
|
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1594 case '`': |
|
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|
1595 if (c == tc) |
|
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|
1596 { |
|
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|
1597 t.len = stringbuffer.offset; |
|
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|
1598 stringbuffer.writeByte(0); |
|
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1599 char* tmp = cast(char*)GC.malloc(stringbuffer.offset); |
|
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1600 memcpy(tmp, stringbuffer.data, stringbuffer.offset); |
|
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|
1601 t.ustring = tmp; |
|
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|
1602 stringPostfix(t); |
|
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|
1603 return TOKstring; |
|
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|
1604 } |
|
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|
1605 break; |
|
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|
1606 |
|
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|
1607 default: |
|
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|
1608 if (c & 0x80) |
|
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|
1609 { p--; |
|
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|
1610 uint u = decodeUTF(); |
|
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|
1611 p++; |
|
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|
1612 if (u == PS || u == LS) |
|
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|
1613 loc.linnum++; |
|
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|
1614 stringbuffer.writeUTF8(u); |
|
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|
1615 continue; |
|
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1616 } |
|
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|
1617 break; |
|
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|
1618 } |
|
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1619 stringbuffer.writeByte(c); |
|
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1620 } |
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1621 |
| 0 | 1622 assert(false); |
| 1623 } | |
| 1624 | |
| 51 | 1625 /************************************** |
| 1626 * Lex hex strings: | |
| 1627 * x"0A ae 34FE BD" | |
| 1628 */ | |
| 0 | 1629 TOK hexStringConstant(Token* t) |
| 1630 { | |
| 51 | 1631 uint c; |
| 1632 Loc start = loc; | |
| 1633 uint n = 0; | |
| 1634 uint v; | |
| 1635 | |
| 1636 p++; | |
| 1637 stringbuffer.reset(); | |
| 1638 while (1) | |
| 1639 { | |
| 1640 c = *p++; | |
| 1641 switch (c) | |
| 1642 { | |
| 1643 case ' ': | |
| 1644 case '\t': | |
| 1645 case '\v': | |
| 1646 case '\f': | |
| 1647 continue; // skip white space | |
| 1648 | |
| 1649 case '\r': | |
| 1650 if (*p == '\n') | |
| 1651 continue; // ignore | |
| 1652 // Treat isolated '\r' as if it were a '\n' | |
| 1653 case '\n': | |
| 1654 loc.linnum++; | |
| 1655 continue; | |
| 1656 | |
| 1657 case 0: | |
| 1658 case 0x1A: | |
| 1659 error("unterminated string constant starting at %s", start.toChars()); | |
| 1660 t.ustring = "".ptr; | |
| 1661 t.len = 0; | |
| 1662 t.postfix = 0; | |
| 1663 return TOKstring; | |
| 1664 | |
| 1665 case '"': | |
| 1666 if (n & 1) | |
| 1667 { | |
| 1668 error("odd number (%d) of hex characters in hex string", n); | |
| 1669 stringbuffer.writeByte(v); | |
| 1670 } | |
| 1671 t.len = stringbuffer.offset; | |
| 1672 stringbuffer.writeByte(0); | |
| 1673 void* mem = malloc(stringbuffer.offset); | |
| 1674 memcpy(mem, stringbuffer.data, stringbuffer.offset); | |
| 1675 t.ustring = cast(const(char)*)mem; | |
| 1676 stringPostfix(t); | |
| 1677 return TOKstring; | |
| 1678 | |
| 1679 default: | |
| 1680 if (c >= '0' && c <= '9') | |
| 1681 c -= '0'; | |
| 1682 else if (c >= 'a' && c <= 'f') | |
| 1683 c -= 'a' - 10; | |
| 1684 else if (c >= 'A' && c <= 'F') | |
| 1685 c -= 'A' - 10; | |
| 1686 else if (c & 0x80) | |
| 1687 { p--; | |
| 1688 uint u = decodeUTF(); | |
| 1689 p++; | |
| 1690 if (u == PS || u == LS) | |
| 1691 loc.linnum++; | |
| 1692 else | |
| 1693 error("non-hex character \\u%x", u); | |
| 1694 } | |
| 1695 else | |
| 1696 error("non-hex character '%c'", c); | |
| 1697 if (n & 1) | |
| 1698 { v = (v << 4) | c; | |
| 1699 stringbuffer.writeByte(v); | |
| 1700 } | |
| 1701 else | |
| 1702 v = c; | |
| 1703 n++; | |
| 1704 break; | |
| 1705 } | |
| 1706 } | |
| 0 | 1707 } |
| 1708 | |
| 1709 version (DMDV2) { | |
| 51 | 1710 /************************************** |
| 1711 * Lex delimited strings: | |
| 1712 * q"(foo(xxx))" // "foo(xxx)" | |
| 1713 * q"[foo(]" // "foo(" | |
| 1714 * q"/foo]/" // "foo]" | |
| 1715 * q"HERE | |
| 1716 * foo | |
| 1717 * HERE" // "foo\n" | |
| 1718 * Input: | |
| 1719 * p is on the " | |
| 1720 */ | |
| 0 | 1721 TOK delimitedStringConstant(Token* t) |
| 1722 { | |
| 51 | 1723 uint c; |
| 1724 Loc start = loc; | |
| 1725 uint delimleft = 0; | |
| 1726 uint delimright = 0; | |
| 1727 uint nest = 1; | |
| 1728 uint nestcount; | |
| 1729 Identifier hereid = null; | |
| 1730 uint blankrol = 0; | |
| 1731 uint startline = 0; | |
| 1732 | |
| 1733 p++; | |
| 1734 stringbuffer.reset(); | |
| 1735 while (1) | |
| 1736 { | |
| 1737 c = *p++; | |
| 1738 //printf("c = '%c'\n", c); | |
| 1739 switch (c) | |
| 1740 { | |
| 1741 case '\n': | |
| 1742 Lnextline: | |
| 1743 loc.linnum++; | |
| 1744 startline = 1; | |
| 1745 if (blankrol) | |
| 1746 { blankrol = 0; | |
| 1747 continue; | |
| 1748 } | |
| 1749 if (hereid) | |
| 1750 { | |
| 1751 stringbuffer.writeUTF8(c); | |
| 1752 continue; | |
| 1753 } | |
| 1754 break; | |
| 1755 | |
| 1756 case '\r': | |
| 1757 if (*p == '\n') | |
| 1758 continue; // ignore | |
| 1759 c = '\n'; // treat EndOfLine as \n character | |
| 1760 goto Lnextline; | |
| 1761 | |
| 1762 case 0: | |
| 1763 case 0x1A: | |
| 1764 goto Lerror; | |
| 1765 | |
| 1766 default: | |
| 1767 if (c & 0x80) | |
| 1768 { p--; | |
| 1769 c = decodeUTF(); | |
| 1770 p++; | |
| 1771 if (c == PS || c == LS) | |
| 1772 goto Lnextline; | |
| 1773 } | |
| 1774 break; | |
| 1775 } | |
| 1776 if (delimleft == 0) | |
| 1777 { | |
| 1778 delimleft = c; | |
| 1779 nest = 1; | |
| 1780 nestcount = 1; | |
| 1781 if (c == '(') | |
| 1782 delimright = ')'; | |
| 1783 else if (c == '{') | |
| 1784 delimright = '}'; | |
| 1785 else if (c == '[') | |
| 1786 delimright = ']'; | |
| 1787 else if (c == '<') | |
| 1788 delimright = '>'; | |
| 1789 else if (isalpha(c) || c == '_' || (c >= 0x80 && isUniAlpha(c))) | |
| 1790 { | |
| 1791 // Start of identifier; must be a heredoc | |
| 1792 Token t2; | |
| 1793 p--; | |
| 1794 scan(&t2); // read in heredoc identifier | |
| 1795 if (t2.value != TOKidentifier) | |
| 1796 { | |
| 1797 error("identifier expected for heredoc, not %s", t2.toChars()); | |
| 1798 delimright = c; | |
| 1799 } | |
| 1800 else | |
| 1801 { | |
| 1802 hereid = t2.ident; | |
| 1803 //printf("hereid = '%s'\n", hereid.toChars()); | |
| 1804 blankrol = 1; | |
| 1805 } | |
| 1806 nest = 0; | |
| 1807 } | |
| 1808 else | |
| 1809 { | |
| 1810 delimright = c; | |
| 1811 nest = 0; | |
| 1812 if (isspace(c)) | |
| 1813 error("delimiter cannot be whitespace"); | |
| 1814 } | |
| 1815 } | |
| 1816 else | |
| 1817 { | |
| 1818 if (blankrol) | |
| 1819 { | |
| 1820 error("heredoc rest of line should be blank"); | |
| 1821 blankrol = 0; | |
| 1822 continue; | |
| 1823 } | |
| 1824 if (nest == 1) | |
| 1825 { | |
| 1826 if (c == delimleft) | |
| 1827 nestcount++; | |
| 1828 else if (c == delimright) | |
| 1829 { nestcount--; | |
| 1830 if (nestcount == 0) | |
| 1831 goto Ldone; | |
| 1832 } | |
| 1833 } | |
| 1834 else if (c == delimright) | |
| 1835 goto Ldone; | |
| 1836 if (startline && isalpha(c) && hereid) | |
| 1837 { | |
| 1838 Token t2; | |
| 1839 ubyte* psave = p; | |
| 1840 p--; | |
| 1841 scan(&t2); // read in possible heredoc identifier | |
| 1842 //printf("endid = '%s'\n", t2.ident.toChars()); | |
| 1843 if (t2.value == TOKidentifier && t2.ident.equals(hereid)) | |
| 1844 { | |
| 1845 /* should check that rest of line is blank | |
| 1846 */ | |
| 1847 goto Ldone; | |
| 1848 } | |
| 1849 p = psave; | |
| 1850 } | |
| 1851 stringbuffer.writeUTF8(c); | |
| 1852 startline = 0; | |
| 1853 } | |
| 1854 } | |
| 1855 | |
| 1856 Ldone: | |
| 1857 if (*p == '"') | |
| 1858 p++; | |
| 1859 else | |
| 1860 error("delimited string must end in %c\"", delimright); | |
| 1861 t.len = stringbuffer.offset; | |
| 1862 stringbuffer.writeByte(0); | |
| 1863 void* mem = malloc(stringbuffer.offset); | |
| 1864 memcpy(mem, stringbuffer.data, stringbuffer.offset); | |
| 1865 t.ustring = cast(const(char)*)mem; | |
| 1866 stringPostfix(t); | |
| 1867 return TOKstring; | |
| 1868 | |
| 1869 Lerror: | |
| 1870 error("unterminated string constant starting at %s", start.toChars()); | |
| 1871 t.ustring = "".ptr; | |
| 1872 t.len = 0; | |
| 1873 t.postfix = 0; | |
| 1874 return TOKstring; | |
| 0 | 1875 } |
| 1876 | |
|
8
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1877 /************************************** |
|
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1878 * Lex delimited strings: |
|
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1879 * q{ foo(xxx) } // " foo(xxx) " |
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1880 * q{foo(} // "foo(" |
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1881 * q{{foo}"}"} // "{foo}"}"" |
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1882 * Input: |
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1883 * p is on the q |
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1884 */ |
| 0 | 1885 TOK tokenStringConstant(Token* t) |
| 1886 { | |
|
8
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1887 uint nest = 1; |
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1888 Loc start = loc; |
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1889 ubyte* pstart = ++p; |
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1890 |
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1891 while (true) |
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1892 { |
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1893 Token tok; |
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1894 |
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1895 scan(&tok); |
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1896 switch (tok.value) |
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1897 { |
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1898 case TOKlcurly: |
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1899 nest++; |
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1900 continue; |
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1901 |
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1902 case TOKrcurly: |
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1903 if (--nest == 0) |
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1904 goto Ldone; |
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1905 continue; |
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1906 |
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1907 case TOKeof: |
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1908 goto Lerror; |
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1909 |
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1910 default: |
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1911 continue; |
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1912 } |
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1913 } |
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1914 |
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1915 Ldone: |
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1916 t.len = p - 1 - pstart; |
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1917 char* tmp = cast(char*)GC.malloc(t.len + 1); |
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1918 memcpy(tmp, pstart, t.len); |
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1919 tmp[t.len] = 0; |
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1920 t.ustring = tmp; |
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1921 stringPostfix(t); |
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1922 return TOKstring; |
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|
1923 |
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1924 Lerror: |
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1925 error("unterminated token string constant starting at %s", start.toChars()); |
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1926 t.ustring = "".ptr; |
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1927 t.len = 0; |
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1928 t.postfix = 0; |
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1929 return TOKstring; |
| 0 | 1930 } |
| 1931 } | |
| 1932 TOK escapeStringConstant(Token* t, int wide) | |
| 1933 { | |
| 1934 uint c; | |
| 1935 Loc start = loc; | |
| 1936 | |
| 1937 p++; | |
| 1938 stringbuffer.reset(); | |
| 1939 while (true) | |
| 1940 { | |
| 1941 c = *p++; | |
| 1942 switch (c) | |
| 1943 { | |
| 1944 version (TEXTUAL_ASSEMBLY_OUT) { | |
| 1945 } else { | |
| 1946 case '\\': | |
| 1947 switch (*p) | |
| 1948 { | |
| 1949 case 'u': | |
| 1950 case 'U': | |
| 1951 case '&': | |
| 1952 c = escapeSequence(); | |
| 1953 stringbuffer.writeUTF8(c); | |
| 1954 continue; | |
| 1955 | |
| 1956 default: | |
| 1957 c = escapeSequence(); | |
| 1958 break; | |
| 1959 } | |
| 1960 break; | |
| 1961 } | |
| 1962 case '\n': | |
| 1963 loc.linnum++; | |
| 1964 break; | |
| 1965 | |
| 1966 case '\r': | |
| 1967 if (*p == '\n') | |
| 1968 continue; // ignore | |
| 1969 c = '\n'; // treat EndOfLine as \n character | |
| 1970 loc.linnum++; | |
| 1971 break; | |
| 1972 | |
| 1973 case '"': | |
| 1974 t.len = stringbuffer.offset; | |
| 1975 stringbuffer.writeByte(0); | |
| 2 | 1976 char* tmp = cast(char*)GC.malloc(stringbuffer.offset); |
| 0 | 1977 memcpy(tmp, stringbuffer.data, stringbuffer.offset); |
| 1978 t.ustring = tmp; | |
| 1979 stringPostfix(t); | |
| 1980 return TOK.TOKstring; | |
| 1981 | |
| 1982 case 0: | |
| 1983 case 0x1A: | |
| 1984 p--; | |
| 1985 error("unterminated string constant starting at %s", start.toChars()); | |
| 1986 t.ustring = "".ptr; | |
| 1987 t.len = 0; | |
| 1988 t.postfix = 0; | |
| 1989 return TOK.TOKstring; | |
| 1990 | |
| 1991 default: | |
| 1992 if (c & 0x80) | |
| 1993 { | |
| 1994 p--; | |
| 1995 c = decodeUTF(); | |
| 1996 if (c == LS || c == PS) | |
| 1997 { c = '\n'; | |
| 1998 loc.linnum++; | |
| 1999 } | |
| 2000 p++; | |
| 2001 stringbuffer.writeUTF8(c); | |
| 2002 continue; | |
| 2003 } | |
| 2004 break; | |
| 2005 } | |
| 2006 stringbuffer.writeByte(c); | |
| 2007 } | |
| 2008 | |
| 2009 assert(false); | |
| 2010 } | |
| 2011 | |
| 2012 TOK charConstant(Token* t, int wide) | |
| 2013 { | |
| 2014 uint c; | |
| 2015 TOK tk = TOKcharv; | |
| 2016 | |
| 2017 //printf("Lexer.charConstant\n"); | |
| 2018 p++; | |
| 2019 c = *p++; | |
| 2020 switch (c) | |
| 2021 { | |
| 2022 version (TEXTUAL_ASSEMBLY_OUT) { | |
| 2023 } else { | |
| 2024 case '\\': | |
| 2025 switch (*p) | |
| 2026 { | |
| 2027 case 'u': | |
| 2028 t.uns64value = escapeSequence(); | |
| 2029 tk = TOKwcharv; | |
| 2030 break; | |
| 2031 | |
| 2032 case 'U': | |
| 2033 case '&': | |
| 2034 t.uns64value = escapeSequence(); | |
| 2035 tk = TOKdcharv; | |
| 2036 break; | |
| 2037 | |
| 2038 default: | |
| 2039 t.uns64value = escapeSequence(); | |
| 2040 break; | |
| 2041 } | |
| 2042 break; | |
| 2043 } | |
| 2044 case '\n': | |
| 2045 L1: | |
| 2046 loc.linnum++; | |
| 2047 case '\r': | |
| 2048 case 0: | |
| 2049 case 0x1A: | |
| 2050 case '\'': | |
| 2051 error("unterminated character constant"); | |
| 2052 return tk; | |
| 2053 | |
| 2054 default: | |
| 2055 if (c & 0x80) | |
| 2056 { | |
| 2057 p--; | |
| 2058 c = decodeUTF(); | |
| 2059 p++; | |
| 2060 if (c == LS || c == PS) | |
| 2061 goto L1; | |
| 2062 if (c < 0xD800 || (c >= 0xE000 && c < 0xFFFE)) | |
| 2063 tk = TOKwcharv; | |
| 2064 else | |
| 2065 tk = TOKdcharv; | |
| 2066 } | |
| 2067 t.uns64value = c; | |
| 2068 break; | |
| 2069 } | |
| 2070 | |
| 2071 if (*p != '\'') | |
| 2072 { | |
| 2073 error("unterminated character constant"); | |
| 2074 return tk; | |
| 2075 } | |
| 2076 p++; | |
| 2077 return tk; | |
| 2078 } | |
| 2079 | |
| 2080 /*************************************** | |
| 2081 * Get postfix of string literal. | |
| 2082 */ | |
| 2083 void stringPostfix(Token* t) | |
| 2084 { | |
| 2085 switch (*p) | |
| 2086 { | |
| 2087 case 'c': | |
| 2088 case 'w': | |
| 2089 case 'd': | |
| 2090 t.postfix = *p; | |
| 2091 p++; | |
| 2092 break; | |
| 2093 | |
| 2094 default: | |
| 2095 t.postfix = 0; | |
| 2096 break; | |
| 2097 } | |
| 2098 } | |
| 2099 | |
| 2100 uint wchar_(uint u) | |
| 2101 { | |
| 2102 assert(false); | |
| 2103 } | |
| 2104 | |
| 2105 /************************************** | |
| 2106 * Read in a number. | |
| 2107 * If it's an integer, store it in tok.TKutok.Vlong. | |
| 2108 * integers can be decimal, octal or hex | |
| 2109 * Handle the suffixes U, UL, LU, L, etc. | |
| 2110 * If it's double, store it in tok.TKutok.Vdouble. | |
| 2111 * Returns: | |
| 2112 * TKnum | |
| 2113 * TKdouble,... | |
| 2114 */ | |
| 2115 | |
| 2116 TOK number(Token* t) | |
| 2117 { | |
| 2118 // We use a state machine to collect numbers | |
| 2119 enum STATE { STATE_initial, STATE_0, STATE_decimal, STATE_octal, STATE_octale, | |
| 2120 STATE_hex, STATE_binary, STATE_hex0, STATE_binary0, | |
| 2121 STATE_hexh, STATE_error }; | |
| 2122 STATE state; | |
| 2123 | |
| 2124 enum FLAGS | |
| 2125 { | |
| 2126 FLAGS_undefined = 0, | |
| 2127 FLAGS_decimal = 1, // decimal | |
| 2128 FLAGS_unsigned = 2, // u or U suffix | |
| 2129 FLAGS_long = 4, // l or L suffix | |
| 2130 }; | |
| 2131 | |
| 2132 FLAGS flags = FLAGS.FLAGS_decimal; | |
| 2133 | |
| 2134 int i; | |
| 2135 int base; | |
| 2136 uint c; | |
| 2137 ubyte *start; | |
| 2138 TOK result; | |
| 2139 | |
| 2140 //printf("Lexer.number()\n"); | |
| 2141 state = STATE.STATE_initial; | |
| 2142 base = 0; | |
| 2143 stringbuffer.reset(); | |
| 2144 start = p; | |
| 2145 while (1) | |
| 2146 { | |
| 2147 c = *p; | |
| 2148 switch (state) | |
| 2149 { | |
| 2150 case STATE.STATE_initial: // opening state | |
| 2151 if (c == '0') | |
| 2152 state = STATE.STATE_0; | |
| 2153 else | |
| 2154 state = STATE.STATE_decimal; | |
| 2155 break; | |
| 2156 | |
| 2157 case STATE.STATE_0: | |
| 2158 flags = (flags & ~FLAGS.FLAGS_decimal); | |
| 2159 switch (c) | |
| 2160 { | |
| 2161 version (ZEROH) { | |
| 2162 case 'H': // 0h | |
| 2163 case 'h': | |
| 2164 goto hexh; | |
| 2165 } | |
| 2166 case 'X': | |
| 2167 case 'x': | |
| 2168 state = STATE.STATE_hex0; | |
| 2169 break; | |
| 2170 | |
| 2171 case '.': | |
| 2172 if (p[1] == '.') // .. is a separate token | |
| 2173 goto done; | |
| 2174 case 'i': | |
| 2175 case 'f': | |
| 2176 case 'F': | |
| 2177 goto real_; | |
| 2178 version (ZEROH) { | |
| 2179 case 'E': | |
| 2180 case 'e': | |
| 2181 goto case_hex; | |
| 2182 } | |
| 2183 case 'B': | |
| 2184 case 'b': | |
| 2185 state = STATE.STATE_binary0; | |
| 2186 break; | |
| 2187 | |
| 2188 case '0': case '1': case '2': case '3': | |
| 2189 case '4': case '5': case '6': case '7': | |
| 2190 state = STATE.STATE_octal; | |
| 2191 break; | |
| 2192 | |
| 2193 version (ZEROH) { | |
| 2194 case '8': case '9': case 'A': | |
| 2195 case 'C': case 'D': case 'F': | |
| 2196 case 'a': case 'c': case 'd': case 'f': | |
| 2197 case_hex: | |
| 2198 state = STATE.STATE_hexh; | |
| 2199 break; | |
| 2200 } | |
| 2201 case '_': | |
| 2202 state = STATE.STATE_octal; | |
| 2203 p++; | |
| 2204 continue; | |
| 2205 | |
| 2206 case 'L': | |
| 2207 if (p[1] == 'i') | |
| 2208 goto real_; | |
| 2209 goto done; | |
| 2210 | |
| 2211 default: | |
| 2212 goto done; | |
| 2213 } | |
| 2214 break; | |
| 2215 | |
| 2216 case STATE.STATE_decimal: // reading decimal number | |
| 2217 if (!isdigit(c)) | |
| 2218 { | |
| 2219 version (ZEROH) { | |
| 2220 if (ishex(c) | |
| 2221 || c == 'H' || c == 'h' | |
| 2222 ) | |
| 2223 goto hexh; | |
| 2224 } | |
| 2225 if (c == '_') // ignore embedded _ | |
| 2226 { p++; | |
| 2227 continue; | |
| 2228 } | |
| 2229 if (c == '.' && p[1] != '.') | |
| 2230 goto real_; | |
| 2231 else if (c == 'i' || c == 'f' || c == 'F' || | |
| 2232 c == 'e' || c == 'E') | |
| 2233 { | |
| 2234 real_: // It's a real number. Back up and rescan as a real | |
| 2235 p = start; | |
| 2236 return inreal(t); | |
| 2237 } | |
| 2238 else if (c == 'L' && p[1] == 'i') | |
| 2239 goto real_; | |
| 2240 goto done; | |
| 2241 } | |
| 2242 break; | |
| 2243 | |
| 2244 case STATE.STATE_hex0: // reading hex number | |
| 2245 case STATE.STATE_hex: | |
| 2246 if (! ishex(cast(ubyte)c)) | |
| 2247 { | |
| 2248 if (c == '_') // ignore embedded _ | |
| 2249 { p++; | |
| 2250 continue; | |
| 2251 } | |
| 2252 if (c == '.' && p[1] != '.') | |
| 2253 goto real_; | |
| 2254 if (c == 'P' || c == 'p' || c == 'i') | |
| 2255 goto real_; | |
| 2256 if (state == STATE.STATE_hex0) | |
| 2257 error("Hex digit expected, not '%c'", c); | |
| 2258 goto done; | |
| 2259 } | |
| 2260 state = STATE.STATE_hex; | |
| 2261 break; | |
| 2262 | |
| 2263 version (ZEROH) { | |
| 2264 hexh: | |
| 2265 state = STATE.STATE_hexh; | |
| 2266 case STATE.STATE_hexh: // parse numbers like 0FFh | |
| 2267 if (!ishex(c)) | |
| 2268 { | |
| 2269 if (c == 'H' || c == 'h') | |
| 2270 { | |
| 2271 p++; | |
| 2272 base = 16; | |
| 2273 goto done; | |
| 2274 } | |
| 2275 else | |
| 2276 { | |
| 2277 // Check for something like 1E3 or 0E24 | |
| 2278 if (memchr(cast(char*)stringbuffer.data, 'E', stringbuffer.offset) || | |
| 2279 memchr(cast(char*)stringbuffer.data, 'e', stringbuffer.offset)) | |
| 2280 goto real_; | |
| 2281 error("Hex digit expected, not '%c'", c); | |
| 2282 goto done; | |
| 2283 } | |
| 2284 } | |
| 2285 break; | |
| 2286 } | |
| 2287 | |
| 2288 case STATE.STATE_octal: // reading octal number | |
| 2289 case STATE.STATE_octale: // reading octal number with non-octal digits | |
| 2290 if (!isoctal(cast(ubyte)c)) | |
| 2291 { | |
| 2292 version (ZEROH) { | |
| 2293 if (ishex(c) | |
| 2294 || c == 'H' || c == 'h' | |
| 2295 ) | |
| 2296 goto hexh; | |
| 2297 } | |
| 2298 if (c == '_') // ignore embedded _ | |
| 2299 { p++; | |
| 2300 continue; | |
| 2301 } | |
| 2302 if (c == '.' && p[1] != '.') | |
| 2303 goto real_; | |
| 2304 if (c == 'i') | |
| 2305 goto real_; | |
| 2306 if (isdigit(c)) | |
| 2307 { | |
| 2308 state = STATE.STATE_octale; | |
| 2309 } | |
| 2310 else | |
| 2311 goto done; | |
| 2312 } | |
| 2313 break; | |
| 2314 | |
| 2315 case STATE.STATE_binary0: // starting binary number | |
| 2316 case STATE.STATE_binary: // reading binary number | |
| 2317 if (c != '0' && c != '1') | |
| 2318 { | |
| 2319 version (ZEROH) { | |
| 2320 if (ishex(c) | |
| 2321 || c == 'H' || c == 'h' | |
| 2322 ) | |
| 2323 goto hexh; | |
| 2324 } | |
| 2325 if (c == '_') // ignore embedded _ | |
| 2326 { p++; | |
| 2327 continue; | |
| 2328 } | |
| 2329 if (state == STATE.STATE_binary0) | |
| 2330 { error("binary digit expected"); | |
| 2331 state = STATE.STATE_error; | |
| 2332 break; | |
| 2333 } | |
| 2334 else | |
| 2335 goto done; | |
| 2336 } | |
| 2337 state = STATE.STATE_binary; | |
| 2338 break; | |
| 2339 | |
| 2340 case STATE.STATE_error: // for error recovery | |
| 2341 if (!isdigit(c)) // scan until non-digit | |
| 2342 goto done; | |
| 2343 break; | |
| 2344 | |
| 2345 default: | |
| 2346 assert(0); | |
| 2347 } | |
| 2348 stringbuffer.writeByte(c); | |
| 2349 p++; | |
| 2350 } | |
| 2351 done: | |
| 2352 stringbuffer.writeByte(0); // terminate string | |
| 2353 if (state == STATE.STATE_octale) | |
| 2354 error("Octal digit expected"); | |
| 2355 | |
| 2356 ulong n; // unsigned >=64 bit integer type | |
| 2357 | |
| 2358 if (stringbuffer.offset == 2 && (state == STATE.STATE_decimal || state == STATE.STATE_0)) | |
| 2359 n = stringbuffer.data[0] - '0'; | |
| 2360 else | |
| 2361 { | |
| 2362 // Convert string to integer | |
| 2363 version (__DMC__) { | |
| 2364 errno = 0; | |
| 2365 n = strtoull(cast(char*)stringbuffer.data,null,base); | |
| 2366 if (errno == ERANGE) | |
| 2367 error("integer overflow"); | |
| 2368 } else { | |
| 2369 // Not everybody implements strtoull() | |
| 2370 char* p = cast(char*)stringbuffer.data; | |
| 2371 int r = 10, d; | |
| 2372 | |
| 2373 if (*p == '0') | |
| 2374 { | |
| 2375 if (p[1] == 'x' || p[1] == 'X') | |
| 2376 p += 2, r = 16; | |
| 2377 else if (p[1] == 'b' || p[1] == 'B') | |
| 2378 p += 2, r = 2; | |
| 2379 else if (isdigit(p[1])) | |
| 2380 p += 1, r = 8; | |
| 2381 } | |
| 2382 | |
| 2383 n = 0; | |
| 2384 while (1) | |
| 2385 { | |
| 2386 if (*p >= '0' && *p <= '9') | |
| 2387 d = *p - '0'; | |
| 2388 else if (*p >= 'a' && *p <= 'z') | |
| 2389 d = *p - 'a' + 10; | |
| 2390 else if (*p >= 'A' && *p <= 'Z') | |
| 2391 d = *p - 'A' + 10; | |
| 2392 else | |
| 2393 break; | |
| 2394 if (d >= r) | |
| 2395 break; | |
| 2396 ulong n2 = n * r; | |
| 2397 //printf("n2 / r = %llx, n = %llx\n", n2/r, n); | |
| 2398 if (n2 / r != n || n2 + d < n) | |
| 2399 { | |
| 2400 error ("integer overflow"); | |
| 2401 break; | |
| 2402 } | |
| 2403 | |
| 2404 n = n2 + d; | |
| 2405 p++; | |
| 2406 } | |
| 2407 } | |
| 2408 if (n.sizeof > 8 && | |
| 2409 n > 0xFFFFFFFFFFFFFFFF) // if n needs more than 64 bits | |
| 2410 error("integer overflow"); | |
| 2411 } | |
| 2412 | |
| 2413 // Parse trailing 'u', 'U', 'l' or 'L' in any combination | |
| 2414 while (1) | |
| 2415 { FLAGS f; | |
| 2416 | |
| 2417 switch (*p) | |
| 2418 { case 'U': | |
| 2419 case 'u': | |
| 2420 f = FLAGS.FLAGS_unsigned; | |
| 2421 goto L1; | |
| 2422 | |
| 2423 case 'l': | |
| 2424 if (1 || !global.params.useDeprecated) | |
| 2425 error("'l' suffix is deprecated, use 'L' instead"); | |
| 2426 case 'L': | |
| 2427 f = FLAGS.FLAGS_long; | |
| 2428 L1: | |
| 2429 p++; | |
| 2430 if (flags & f) | |
| 2431 error("unrecognized token"); | |
| 2432 flags = (flags | f); | |
| 2433 continue; | |
| 2434 default: | |
| 2435 break; | |
| 2436 } | |
| 2437 break; | |
| 2438 } | |
| 2439 | |
| 2440 switch (flags) | |
| 2441 { | |
| 2442 case FLAGS.FLAGS_undefined: | |
| 2443 /* Octal or Hexadecimal constant. | |
| 2444 * First that fits: int, uint, long, ulong | |
| 2445 */ | |
| 2446 if (n & 0x8000000000000000) | |
| 2447 result = TOK.TOKuns64v; | |
| 2448 else if (n & 0xFFFFFFFF00000000) | |
| 2449 result = TOK.TOKint64v; | |
| 2450 else if (n & 0x80000000) | |
| 2451 result = TOK.TOKuns32v; | |
| 2452 else | |
| 2453 result = TOK.TOKint32v; | |
| 2454 break; | |
| 2455 | |
| 2456 case FLAGS.FLAGS_decimal: | |
| 2457 /* First that fits: int, long, long long | |
| 2458 */ | |
| 2459 if (n & 0x8000000000000000) | |
| 2460 { error("signed integer overflow"); | |
| 2461 result = TOK.TOKuns64v; | |
| 2462 } | |
| 2463 else if (n & 0xFFFFFFFF80000000) | |
| 2464 result = TOK.TOKint64v; | |
| 2465 else | |
| 2466 result = TOK.TOKint32v; | |
| 2467 break; | |
| 2468 | |
| 2469 case FLAGS.FLAGS_unsigned: | |
| 2470 case FLAGS.FLAGS_decimal | FLAGS.FLAGS_unsigned: | |
| 2471 /* First that fits: uint, ulong | |
| 2472 */ | |
| 2473 if (n & 0xFFFFFFFF00000000) | |
| 2474 result = TOK.TOKuns64v; | |
| 2475 else | |
| 2476 result = TOK.TOKuns32v; | |
| 2477 break; | |
| 2478 | |
| 2479 case FLAGS.FLAGS_decimal | FLAGS.FLAGS_long: | |
| 2480 if (n & 0x8000000000000000) | |
| 2481 { error("signed integer overflow"); | |
| 2482 result = TOK.TOKuns64v; | |
| 2483 } | |
| 2484 else | |
| 2485 result = TOK.TOKint64v; | |
| 2486 break; | |
| 2487 | |
| 2488 case FLAGS.FLAGS_long: | |
| 2489 if (n & 0x8000000000000000) | |
| 2490 result = TOK.TOKuns64v; | |
| 2491 else | |
| 2492 result = TOK.TOKint64v; | |
| 2493 break; | |
| 2494 | |
| 2495 case FLAGS.FLAGS_unsigned | FLAGS.FLAGS_long: | |
| 2496 case FLAGS.FLAGS_decimal | FLAGS.FLAGS_unsigned | FLAGS.FLAGS_long: | |
| 2497 result = TOK.TOKuns64v; | |
| 2498 break; | |
| 2499 | |
| 2500 default: | |
| 2501 debug { | |
| 2502 printf("%x\n",flags); | |
| 2503 } | |
| 2504 assert(0); | |
| 2505 } | |
| 2506 t.uns64value = n; | |
| 2507 return result; | |
| 2508 } | |
| 2509 | |
| 2510 /************************************** | |
| 2511 * Read in characters, converting them to real. | |
| 2512 * Bugs: | |
| 2513 * Exponent overflow not detected. | |
| 2514 * Too much requested precision is not detected. | |
| 2515 */ | |
| 2516 TOK inreal(Token* t) | |
| 2517 in | |
| 2518 { | |
| 2519 assert(*p == '.' || isdigit(*p)); | |
| 2520 } | |
| 2521 out (result) | |
| 2522 { | |
| 2523 switch (result) | |
| 2524 { | |
| 2525 case TOKfloat32v: | |
| 2526 case TOKfloat64v: | |
| 2527 case TOKfloat80v: | |
| 2528 case TOKimaginary32v: | |
| 2529 case TOKimaginary64v: | |
| 2530 case TOKimaginary80v: | |
| 2531 break; | |
| 2532 | |
| 2533 default: | |
| 2534 assert(0); | |
| 2535 } | |
| 2536 } | |
| 2537 body | |
| 2538 { | |
| 2539 int dblstate; | |
| 2540 uint c; | |
| 2541 char hex; // is this a hexadecimal-floating-constant? | |
| 2542 TOK result; | |
| 2543 | |
| 2544 //printf("Lexer.inreal()\n"); | |
| 2545 stringbuffer.reset(); | |
| 2546 dblstate = 0; | |
| 2547 hex = 0; | |
| 2548 Lnext: | |
| 2549 while (true) | |
| 2550 { | |
| 2551 // Get next char from input | |
| 2552 c = *p++; | |
| 2553 //printf("dblstate = %d, c = '%c'\n", dblstate, c); | |
| 2554 while (true) | |
| 2555 { | |
| 2556 switch (dblstate) | |
| 2557 { | |
| 2558 case 0: // opening state | |
| 2559 if (c == '0') | |
| 2560 dblstate = 9; | |
| 2561 else if (c == '.') | |
| 2562 dblstate = 3; | |
| 2563 else | |
| 2564 dblstate = 1; | |
| 2565 break; | |
| 2566 | |
| 2567 case 9: | |
| 2568 dblstate = 1; | |
| 2569 if (c == 'X' || c == 'x') | |
| 2570 { | |
| 2571 hex++; | |
| 2572 break; | |
| 2573 } | |
| 2574 case 1: // digits to left of . | |
| 2575 case 3: // digits to right of . | |
| 2576 case 7: // continuing exponent digits | |
| 2577 if (!isdigit(c) && !(hex && isxdigit(c))) | |
| 2578 { | |
| 2579 if (c == '_') | |
| 2580 goto Lnext; // ignore embedded '_' | |
| 2581 dblstate++; | |
| 2582 continue; | |
| 2583 } | |
| 2584 break; | |
| 2585 | |
| 2586 case 2: // no more digits to left of . | |
| 2587 if (c == '.') | |
| 2588 { | |
| 2589 dblstate++; | |
| 2590 break; | |
| 2591 } | |
| 2592 case 4: // no more digits to right of . | |
| 2593 if ((c == 'E' || c == 'e') || | |
| 2594 hex && (c == 'P' || c == 'p')) | |
| 2595 { | |
| 2596 dblstate = 5; | |
| 2597 hex = 0; // exponent is always decimal | |
| 2598 break; | |
| 2599 } | |
| 2600 if (hex) | |
| 2601 error("binary-exponent-part required"); | |
| 2602 goto done; | |
| 2603 | |
| 2604 case 5: // looking immediately to right of E | |
| 2605 dblstate++; | |
| 2606 if (c == '-' || c == '+') | |
| 2607 break; | |
| 2608 case 6: // 1st exponent digit expected | |
| 2609 if (!isdigit(c)) | |
| 2610 error("exponent expected"); | |
| 2611 dblstate++; | |
| 2612 break; | |
| 2613 | |
| 2614 case 8: // past end of exponent digits | |
| 2615 goto done; | |
| 2616 } | |
| 2617 break; | |
| 2618 } | |
| 2619 stringbuffer.writeByte(c); | |
| 2620 } | |
| 2621 done: | |
| 2622 p--; | |
| 2623 | |
| 2624 stringbuffer.writeByte(0); | |
| 2625 | |
| 2626 version (_WIN32) { /// && __DMC__ | |
| 2627 char* save = __locale_decpoint; | |
| 2628 __locale_decpoint = cast(char*)".".ptr; | |
| 2629 } | |
| 2630 t.float80value = strtold(cast(char*)stringbuffer.data, null); | |
| 2631 | |
| 2632 errno = 0; | |
| 2633 switch (*p) | |
| 2634 { | |
| 2635 case 'F': | |
| 2636 case 'f': | |
| 2637 strtof(cast(char*)stringbuffer.data, null); | |
| 2638 result = TOKfloat32v; | |
| 2639 p++; | |
| 2640 break; | |
| 2641 | |
| 2642 default: | |
| 2643 strtod(cast(char*)stringbuffer.data, null); | |
| 2644 result = TOKfloat64v; | |
| 2645 break; | |
| 2646 | |
| 2647 case 'l': | |
| 2648 if (!global.params.useDeprecated) | |
| 2649 error("'l' suffix is deprecated, use 'L' instead"); | |
| 2650 case 'L': | |
| 2651 result = TOKfloat80v; | |
| 2652 p++; | |
| 2653 break; | |
| 2654 } | |
| 2655 if (*p == 'i' || *p == 'I') | |
| 2656 { | |
| 2657 if (!global.params.useDeprecated && *p == 'I') | |
| 2658 error("'I' suffix is deprecated, use 'i' instead"); | |
| 2659 p++; | |
| 2660 switch (result) | |
| 2661 { | |
| 2662 case TOKfloat32v: | |
| 2663 result = TOKimaginary32v; | |
| 2664 break; | |
| 2665 case TOKfloat64v: | |
| 2666 result = TOKimaginary64v; | |
| 2667 break; | |
| 2668 case TOKfloat80v: | |
| 2669 result = TOKimaginary80v; | |
| 2670 break; | |
| 2671 } | |
| 2672 } | |
| 2673 | |
| 2674 version (_WIN32) { ///&& __DMC__ | |
| 2675 __locale_decpoint = save; | |
| 2676 } | |
| 2677 if (errno == ERANGE) | |
| 2678 error("number is not representable"); | |
| 2679 | |
| 2680 return result; | |
| 2681 } | |
| 2682 | |
| 2683 void error(T...)(string format, T t) | |
| 2684 { | |
| 2685 error(this.loc, format, t); | |
| 2686 } | |
| 2687 | |
| 2688 void error(T...)(Loc loc, string format, T t) | |
| 2689 { | |
| 2690 if (mod && !global.gag) | |
| 2691 { | |
| 2692 string p = loc.toChars(); | |
| 2693 if (p.length != 0) | |
| 2694 writef("%s: ", p); | |
| 2695 | |
| 2696 writefln(format, t); | |
| 2697 | |
| 2698 if (global.errors >= 20) // moderate blizzard of cascading messages | |
| 2699 fatal(); | |
| 2700 } | |
| 2701 | |
| 2702 global.errors++; | |
| 2703 } | |
| 2704 | |
| 2705 void pragma_() | |
| 2706 { | |
| 2707 assert(false); | |
| 2708 } | |
| 2709 | |
| 49 | 2710 /******************************************** |
| 2711 * Decode UTF character. | |
| 2712 * Issue error messages for invalid sequences. | |
| 2713 * Return decoded character, advance p to last character in UTF sequence. | |
| 2714 */ | |
| 0 | 2715 uint decodeUTF() |
| 2716 { | |
| 49 | 2717 dchar u; |
| 2718 ubyte c; | |
| 2719 ubyte* s = p; | |
| 2720 size_t len; | |
| 2721 size_t idx; | |
| 2722 string msg; | |
| 2723 | |
| 2724 c = *s; | |
| 2725 assert(c & 0x80); | |
| 2726 | |
| 2727 // Check length of remaining string up to 6 UTF-8 characters | |
| 2728 for (len = 1; len < 6 && s[len]; len++) { | |
| 2729 ; | |
| 2730 } | |
| 2731 | |
| 2732 idx = 0; | |
| 2733 msg = utf_decodeChar(cast(string)s[0..len], &idx, &u); | |
| 2734 p += idx - 1; | |
| 2735 if (msg) | |
| 2736 { | |
| 2737 error("%s", msg); | |
| 2738 } | |
| 2739 return u; | |
| 0 | 2740 } |
| 2741 | |
| 2742 void getDocComment(Token* t, uint lineComment) | |
| 2743 { | |
| 2744 assert(false); | |
| 2745 } | |
| 2746 | |
| 2747 static bool isValidIdentifier(string p) | |
| 2748 { | |
| 2749 if (p.length == 0) { | |
| 2750 return false; | |
| 2751 } | |
| 2752 | |
| 2753 if (p[0] >= '0' && p[0] <= '9') { // beware of isdigit() on signed chars | |
| 2754 return false; | |
| 2755 } | |
| 2756 | |
| 2757 size_t idx = 0; | |
| 2758 while (idx < p.length) | |
| 2759 { | |
| 2760 dchar dc; | |
| 2761 | |
| 2762 if (utf_decodeChar(p, &idx, &dc) !is null) { | |
| 2763 return false; | |
| 2764 } | |
| 2765 | |
| 2766 if (!((dc >= 0x80 && isUniAlpha(dc)) || isalnum(dc) || dc == '_')) { | |
| 2767 return false; | |
| 2768 } | |
| 2769 } | |
| 2770 | |
| 2771 return true; | |
| 2772 } | |
| 2773 | |
| 2774 /// TODO: reimplement based on strings | |
| 2775 static ubyte* combineComments(ubyte* c1, ubyte* c2) | |
| 2776 { | |
| 2777 //printf("Lexer.combineComments('%s', '%s')\n", c1, c2); | |
| 2778 | |
| 2779 ubyte* c = c2; | |
| 2780 | |
| 2781 if (c1) | |
| 2782 { | |
| 2783 c = c1; | |
| 2784 if (c2) | |
| 2785 { | |
| 2786 size_t len1 = strlen(cast(char*)c1); | |
| 2787 size_t len2 = strlen(cast(char*)c2); | |
| 2788 | |
| 2 | 2789 c = cast(ubyte*)GC.malloc(len1 + 1 + len2 + 1); |
| 0 | 2790 memcpy(c, c1, len1); |
| 2791 if (len1 && c1[len1 - 1] != '\n') | |
| 2792 { | |
| 2793 c[len1] = '\n'; | |
| 2794 len1++; | |
| 2795 } | |
| 2796 memcpy(c + len1, c2, len2); | |
| 2797 c[len1 + len2] = 0; | |
| 2798 } | |
| 2799 } | |
| 2800 | |
| 2801 return c; | |
| 2802 } | |
| 2803 } |