Mercurial > projects > ddmd
annotate dmd/expression/Util.d @ 144:ea6325d0edd9
+ RealExp.toCBuffer
| author | Eldar Insafutdinov <e.insafutdinov@gmail.com> |
|---|---|
| date | Tue, 14 Sep 2010 22:39:29 +0100 |
| parents | af1bebfd96a4 |
| children | 0c8cc2a10f99 |
| rev | line source |
|---|---|
| 0 | 1 module dmd.expression.Util; |
| 2 | |
| 114 | 3 import dmd.common; |
| 0 | 4 import dmd.Expression; |
| 5 import dmd.Loc; | |
| 53 | 6 import dmd.RealExp; |
| 0 | 7 import dmd.Scope; |
| 8 import dmd.FuncExp; | |
| 9 import dmd.DelegateExp; | |
| 10 import dmd.LINK; | |
| 11 import dmd.NullExp; | |
| 12 import dmd.SymOffExp; | |
| 13 import dmd.ExpInitializer; | |
| 14 import dmd.Lexer; | |
| 15 import dmd.TypeSArray; | |
| 16 import dmd.TypeArray; | |
| 17 import dmd.VarDeclaration; | |
| 18 import dmd.VoidInitializer; | |
| 19 import dmd.DeclarationExp; | |
| 20 import dmd.VarExp; | |
| 21 import dmd.NewExp; | |
| 22 import dmd.STC; | |
| 23 import dmd.WANT; | |
| 24 import dmd.IndexExp; | |
| 25 import dmd.AssignExp; | |
| 26 import dmd.CommaExp; | |
|
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27 import dmd.CondExp; |
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28 import dmd.Parameter; |
| 0 | 29 import dmd.DefaultInitExp; |
| 30 import dmd.Identifier; | |
| 31 import dmd.Dsymbol; | |
| 32 import dmd.Global; | |
| 33 import dmd.ScopeDsymbol; | |
| 34 import dmd.DotIdExp; | |
| 35 import dmd.DotVarExp; | |
| 36 import dmd.CallExp; | |
| 37 import dmd.TY; | |
| 38 import dmd.MATCH; | |
| 53 | 39 import dmd.BUILTIN; |
| 0 | 40 import dmd.TypeFunction; |
| 41 import dmd.declaration.Match; | |
| 42 import dmd.ArrayTypes; | |
| 43 import dmd.Declaration; | |
| 44 import dmd.FuncAliasDeclaration; | |
| 45 import dmd.AliasDeclaration; | |
| 46 import dmd.FuncDeclaration; | |
| 47 import dmd.TemplateDeclaration; | |
| 48 import dmd.AggregateDeclaration; | |
| 49 import dmd.IntegerExp; | |
| 50 import dmd.Type; | |
| 51 import dmd.TOK; | |
| 52 import dmd.TypeExp; | |
| 53 import dmd.TypeTuple; | |
| 54 import dmd.TupleExp; | |
| 55 import dmd.OutBuffer; | |
| 56 import dmd.HdrGenState; | |
| 57 import dmd.ClassDeclaration; | |
| 58 import dmd.TypeClass; | |
| 59 import dmd.StructDeclaration; | |
| 60 import dmd.TypeStruct; | |
| 61 import dmd.MOD; | |
| 62 import dmd.PROT; | |
| 63 import dmd.PREC; | |
| 64 import dmd.Util; | |
| 65 import dmd.TypeAArray; | |
| 66 import dmd.Id; | |
| 114 | 67 import dmd.PtrExp; |
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68 import dmd.ErrorExp; |
| 0 | 69 |
| 70 import std.stdio : writef; | |
| 71 | |
| 129 | 72 import core.stdc.math; |
| 73 import core.stdc.string; | |
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74 import core.stdc.stdlib; |
| 0 | 75 |
| 76 /*********************************** | |
| 77 * Utility to build a function call out of this reference and argument. | |
| 78 */ | |
| 79 Expression build_overload(Loc loc, Scope sc, Expression ethis, Expression earg, Identifier id) | |
| 80 { | |
| 81 Expression e; | |
| 82 | |
| 83 //printf("build_overload(id = '%s')\n", id.toChars()); | |
| 84 //earg.print(); | |
| 85 //earg.type.print(); | |
| 86 e = new DotIdExp(loc, ethis, id); | |
| 87 | |
| 88 if (earg) | |
| 89 e = new CallExp(loc, e, earg); | |
| 90 else | |
| 91 e = new CallExp(loc, e); | |
| 92 | |
| 93 e = e.semantic(sc); | |
| 94 return e; | |
| 95 } | |
| 96 | |
| 97 /*************************************** | |
| 98 * Search for function funcid in aggregate ad. | |
| 99 */ | |
| 100 | |
| 101 Dsymbol search_function(ScopeDsymbol ad, Identifier funcid) | |
| 102 { | |
| 103 Dsymbol s; | |
| 104 FuncDeclaration fd; | |
| 105 TemplateDeclaration td; | |
| 106 | |
| 107 s = ad.search(Loc(0), funcid, 0); | |
| 108 if (s) | |
| 109 { | |
| 110 Dsymbol s2; | |
| 111 | |
| 112 //printf("search_function: s = '%s'\n", s.kind()); | |
| 113 s2 = s.toAlias(); | |
| 114 //printf("search_function: s2 = '%s'\n", s2.kind()); | |
| 115 fd = s2.isFuncDeclaration(); | |
| 116 if (fd && fd.type.ty == TY.Tfunction) | |
| 117 return fd; | |
| 118 | |
| 119 td = s2.isTemplateDeclaration(); | |
| 120 if (td) | |
| 121 return td; | |
| 122 } | |
| 123 | |
| 124 return null; | |
| 125 } | |
| 126 | |
| 127 /******************************************** | |
| 128 * Find function in overload list that exactly matches t. | |
| 129 */ | |
| 130 | |
| 131 /*************************************************** | |
| 132 * Visit each overloaded function in turn, and call | |
| 133 * dg(param, f) on it. | |
| 134 * Exit when no more, or dg(param, f) returns 1. | |
| 135 * Returns: | |
| 136 * 0 continue | |
| 137 * 1 done | |
| 138 */ | |
| 139 | |
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140 int overloadApply(FuncDeclaration fstart, int delegate(void*, FuncDeclaration) dg, void* param) |
| 0 | 141 { |
| 142 FuncDeclaration f; | |
| 143 Declaration d; | |
| 144 Declaration next; | |
| 145 | |
| 146 for (d = fstart; d; d = next) | |
| 147 { | |
| 148 FuncAliasDeclaration fa = d.isFuncAliasDeclaration(); | |
| 149 | |
| 150 if (fa) | |
| 151 { | |
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152 if (overloadApply(fa.funcalias, dg, param)) |
| 0 | 153 return 1; |
| 154 next = fa.overnext; | |
| 155 } | |
| 156 else | |
| 157 { | |
| 158 AliasDeclaration a = d.isAliasDeclaration(); | |
| 159 | |
| 160 if (a) | |
| 161 { | |
| 162 Dsymbol s = a.toAlias(); | |
| 163 next = s.isDeclaration(); | |
| 164 if (next is a) | |
| 165 break; | |
| 166 if (next is fstart) | |
| 167 break; | |
| 168 } | |
| 169 else | |
| 170 { | |
| 171 f = d.isFuncDeclaration(); | |
| 172 if (f is null) | |
| 173 { | |
| 174 d.error("is aliased to a function"); | |
| 175 break; // BUG: should print error message? | |
| 176 } | |
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177 if (dg(param, f)) |
| 0 | 178 return 1; |
| 179 | |
| 180 next = f.overnext; | |
| 181 } | |
| 182 } | |
| 183 } | |
| 184 return 0; | |
| 185 } | |
| 186 | |
| 187 /******************************************** | |
| 188 * Decide which function matches the arguments best. | |
| 189 */ | |
| 190 | |
| 191 struct Param2 | |
| 192 { | |
| 193 Match* m; | |
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194 version(DMDV2) { |
| 0 | 195 Expression ethis; |
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196 int property; // 0: unintialized |
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197 // 1: seen @property |
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198 // 2: not @property |
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199 } |
| 0 | 200 Expressions arguments; |
| 201 | |
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202 int fp2(void* param, FuncDeclaration f) |
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203 { |
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204 auto p = cast(Param2*)param; |
| 0 | 205 MATCH match; |
| 206 | |
| 207 if (f != m.lastf) // skip duplicates | |
| 208 { | |
| 209 m.anyf = f; | |
| 210 TypeFunction tf = cast(TypeFunction)f.type; | |
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211 |
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212 int property = (tf.isproperty) ? 1 : 2; |
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213 if (p.property == 0) |
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214 p.property = property; |
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215 else if (p.property != property) |
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216 error(f.loc, "cannot overload both property and non-property functions"); |
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217 |
| 0 | 218 match = tf.callMatch(f.needThis() ? ethis : null, arguments); |
| 98 | 219 //printf("test: match = %d\n", match); |
| 0 | 220 if (match != MATCH.MATCHnomatch) |
| 221 { | |
| 222 if (match > m.last) | |
| 223 goto LfIsBetter; | |
| 224 | |
| 225 if (match < m.last) | |
| 226 goto LlastIsBetter; | |
| 227 | |
| 228 /* See if one of the matches overrides the other. | |
| 229 */ | |
| 230 if (m.lastf.overrides(f)) | |
| 231 goto LlastIsBetter; | |
| 232 else if (f.overrides(m.lastf)) | |
| 233 goto LfIsBetter; | |
| 234 | |
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235 version(DMDV2) { |
| 0 | 236 /* Try to disambiguate using template-style partial ordering rules. |
| 237 * In essence, if f() and g() are ambiguous, if f() can call g(), | |
| 238 * but g() cannot call f(), then pick f(). | |
| 239 * This is because f() is "more specialized." | |
| 240 */ | |
| 241 { | |
| 242 MATCH c1 = f.leastAsSpecialized(m.lastf); | |
| 243 MATCH c2 = m.lastf.leastAsSpecialized(f); | |
| 244 //printf("c1 = %d, c2 = %d\n", c1, c2); | |
| 245 if (c1 > c2) | |
| 246 goto LfIsBetter; | |
| 247 if (c1 < c2) | |
| 248 goto LlastIsBetter; | |
| 249 } | |
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250 } |
| 0 | 251 |
| 252 Lambiguous: | |
| 253 m.nextf = f; | |
| 254 m.count++; | |
| 255 return 0; | |
| 256 | |
| 257 LfIsBetter: | |
| 258 m.last = match; | |
| 259 m.lastf = f; | |
| 260 m.count = 1; | |
| 261 return 0; | |
| 262 | |
| 263 LlastIsBetter: | |
| 264 return 0; | |
| 265 } | |
| 266 } | |
| 267 return 0; | |
| 268 } | |
| 269 } | |
| 270 | |
| 271 struct Param1 | |
| 272 { | |
| 273 Type t; // type to match | |
| 274 FuncDeclaration f; // return value | |
| 275 | |
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276 int fp1(void*, FuncDeclaration f) |
| 0 | 277 { |
| 278 if (t.equals(f.type)) | |
| 279 { | |
| 280 this.f = f; | |
| 281 return 1; | |
| 282 } | |
| 283 | |
| 284 version (DMDV2) { | |
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285 /* Allow covariant matches, as long as the return type |
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286 * is just a const conversion. |
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287 * This allows things like pure functions to match with an impure function type. |
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288 */ |
| 0 | 289 if (t.ty == Tfunction) |
| 290 { | |
| 291 TypeFunction tf = cast(TypeFunction)f.type; | |
| 292 if (tf.covariant(t) == 1 && | |
| 293 tf.nextOf().implicitConvTo(t.nextOf()) >= MATCHconst) | |
| 294 { | |
| 295 this.f = f; | |
| 296 return 1; | |
| 297 } | |
| 298 } | |
| 299 } | |
| 300 return 0; | |
| 301 } | |
| 302 } | |
| 303 | |
| 304 void overloadResolveX(Match* m, FuncDeclaration fstart, Expression ethis, Expressions arguments) | |
| 305 { | |
| 306 Param2 p; | |
| 307 p.m = m; | |
| 308 p.ethis = ethis; | |
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309 p.property = 0; |
| 0 | 310 p.arguments = arguments; |
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311 overloadApply(fstart, &p.fp2, &p); |
| 0 | 312 } |
| 313 | |
| 314 void templateResolve(Match* m, TemplateDeclaration td, Scope sc, Loc loc, Objects targsi, Expression ethis, Expressions arguments) | |
| 315 { | |
| 316 FuncDeclaration fd; | |
| 317 | |
| 318 assert(td); | |
| 319 fd = td.deduceFunctionTemplate(sc, loc, targsi, ethis, arguments); | |
| 320 if (!fd) | |
| 321 return; | |
| 322 m.anyf = fd; | |
| 323 if (m.last >= MATCH.MATCHexact) | |
| 324 { | |
| 325 m.nextf = fd; | |
| 326 m.count++; | |
| 327 } | |
| 328 else | |
| 329 { | |
| 330 m.last = MATCH.MATCHexact; | |
| 331 m.lastf = fd; | |
| 332 m.count = 1; | |
| 333 } | |
| 334 } | |
| 335 | |
| 336 /****************************** | |
| 337 * Perform semantic() on an array of Expressions. | |
| 338 */ | |
| 339 | |
| 340 void arrayExpressionSemantic(Expressions exps, Scope sc) | |
| 341 { | |
| 342 if (exps) | |
| 343 { | |
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344 foreach (ref Expression e; exps) |
| 0 | 345 { |
| 346 e = e.semantic(sc); | |
| 347 } | |
| 348 } | |
| 349 } | |
| 350 | |
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351 Expressions arrayExpressionToCommonType(Scope sc, Expressions exps, Type *pt) |
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352 { |
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353 //version(DMDV1) { |
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354 // /* The first element sets the type |
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355 // */ |
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356 // Type *t0 = NULL; |
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357 // for (size_t i = 0; i < exps->dim; i++) |
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358 // { Expression *e = (Expression *)exps->data[i]; |
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359 // |
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360 // if (!e->type) |
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361 // { error("%s has no value", e->toChars()); |
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362 // e = new ErrorExp(); |
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363 // } |
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364 // e = resolveProperties(sc, e); |
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365 // |
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366 // if (!t0) |
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367 // t0 = e->type; |
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368 // else |
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369 // e = e->implicitCastTo(sc, t0); |
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370 // exps->data[i] = (void *)e; |
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371 // } |
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372 // |
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373 // if (!t0) |
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374 // t0 = Type::tvoid; |
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375 // if (pt) |
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376 // *pt = t0; |
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377 // |
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378 // // Eventually, we want to make this copy-on-write |
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379 // return exps; |
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380 //} |
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381 version(DMDV2) { |
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382 /* The type is determined by applying ?: to each pair. |
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383 */ |
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384 /* Still have a problem with: |
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385 * ubyte[][] = [ cast(ubyte[])"hello", [1]]; |
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386 * which works if the array literal is initialized top down with the ubyte[][] |
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387 * type, but fails with this function doing bottom up typing. |
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388 */ |
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389 //printf("arrayExpressionToCommonType()\n"); |
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390 scope integerexp = new IntegerExp(0); |
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391 scope condexp = new CondExp(Loc(0), integerexp, null, null); |
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392 |
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393 Type t0; |
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394 Expression e0; |
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395 int j0; |
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396 foreach (size_t i, Expression e; exps) |
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397 { |
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398 e = resolveProperties(sc, e); |
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399 if (!e.type) |
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400 { error("%s has no value", e.toChars()); |
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401 e = new ErrorExp(); |
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402 } |
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403 |
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404 if (t0) |
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405 { |
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406 if (t0 != e.type) |
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407 { |
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408 /* This applies ?: to merge the types. It's backwards; |
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409 * ?: should call this function to merge types. |
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410 */ |
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411 condexp.type = null; |
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412 condexp.e1 = e0; |
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413 condexp.e2 = e; |
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414 condexp.semantic(sc); |
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415 exps[j0] = condexp.e1; |
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416 e = condexp.e2; |
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417 j0 = i; |
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418 e0 = e; |
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419 t0 = e0.type; |
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420 } |
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421 } |
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422 else |
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423 { |
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424 j0 = i; |
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425 e0 = e; |
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426 t0 = e.type; |
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427 } |
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428 exps[i] = e; |
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429 } |
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430 |
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431 if (t0) |
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432 { |
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433 foreach (ref Expression e; exps) |
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434 { |
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435 e = e.implicitCastTo(sc, t0); |
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436 } |
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437 } |
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438 else |
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439 t0 = Type.tvoid; // [] is typed as void[] |
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440 if (pt) |
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441 *pt = t0; |
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442 |
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443 // Eventually, we want to make this copy-on-write |
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444 return exps; |
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445 } |
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446 } |
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447 |
| 0 | 448 /**************************************** |
| 449 * Preprocess arguments to function. | |
| 450 */ | |
| 451 | |
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452 void preFunctionParameters(Loc loc, Scope sc, Expressions exps) |
| 0 | 453 { |
| 454 if (exps) | |
| 455 { | |
| 456 expandTuples(exps); | |
| 57 | 457 |
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458 foreach (size_t i, ref Expression arg; exps) |
| 0 | 459 { |
| 460 if (!arg.type) | |
| 461 { | |
| 462 debug { | |
| 57 | 463 if (!global.gag) { |
| 0 | 464 writef("1: \n"); |
| 57 | 465 } |
| 0 | 466 } |
| 467 arg.error("%s is not an expression", arg.toChars()); | |
| 468 arg = new IntegerExp(arg.loc, 0, Type.tint32); | |
| 469 } | |
| 470 | |
| 471 arg = resolveProperties(sc, arg); | |
| 472 | |
| 473 //arg.rvalue(); | |
| 474 static if (false) { | |
| 475 if (arg.type.ty == TY.Tfunction) | |
| 476 { | |
| 477 arg = new AddrExp(arg.loc, arg); | |
| 478 arg = arg.semantic(sc); | |
| 479 } | |
| 480 } | |
| 481 } | |
| 482 } | |
| 483 } | |
| 484 | |
| 485 /************************************************************* | |
| 486 * Given var, we need to get the | |
| 487 * right 'this' pointer if var is in an outer class, but our | |
| 488 * existing 'this' pointer is in an inner class. | |
| 489 * Input: | |
| 490 * e1 existing 'this' | |
| 491 * ad struct or class we need the correct 'this' for | |
| 492 * var the specific member of ad we're accessing | |
| 493 */ | |
| 494 | |
| 495 Expression getRightThis(Loc loc, Scope sc, AggregateDeclaration ad, Expression e1, Declaration var) | |
| 496 { | |
| 497 //printf("\ngetRightThis(e1 = %s, ad = %s, var = %s)\n", e1.toChars(), ad.toChars(), var.toChars()); | |
| 498 L1: | |
| 499 Type t = e1.type.toBasetype(); | |
| 500 //printf("e1.type = %s, var.type = %s\n", e1.type.toChars(), var.type.toChars()); | |
| 501 | |
| 502 /* If e1 is not the 'this' pointer for ad | |
| 503 */ | |
| 504 if (ad && !(t.ty == TY.Tpointer && t.nextOf().ty == TY.Tstruct && (cast(TypeStruct)t.nextOf()).sym == ad) && !(t.ty == TY.Tstruct && (cast(TypeStruct)t).sym == ad)) | |
| 505 { | |
| 506 ClassDeclaration cd = ad.isClassDeclaration(); | |
| 507 ClassDeclaration tcd = t.isClassHandle(); | |
| 508 | |
| 509 /* e1 is the right this if ad is a base class of e1 | |
| 510 */ | |
| 511 if (!cd || !tcd || !(tcd == cd || cd.isBaseOf(tcd, null))) | |
| 512 { | |
| 513 /* Only classes can be inner classes with an 'outer' | |
| 514 * member pointing to the enclosing class instance | |
| 515 */ | |
| 516 if (tcd && tcd.isNested()) | |
| 517 { | |
| 518 /* e1 is the 'this' pointer for an inner class: tcd. | |
| 519 * Rewrite it as the 'this' pointer for the outer class. | |
| 520 */ | |
| 521 | |
| 522 e1 = new DotVarExp(loc, e1, tcd.vthis); | |
| 523 e1.type = tcd.vthis.type; | |
| 524 // Do not call checkNestedRef() | |
| 525 //e1 = e1.semantic(sc); | |
| 526 | |
| 527 // Skip up over nested functions, and get the enclosing | |
| 528 // class type. | |
| 529 int n = 0; | |
| 530 Dsymbol s; | |
| 531 for (s = tcd.toParent(); s && s.isFuncDeclaration(); s = s.toParent()) | |
| 532 { | |
| 533 FuncDeclaration f = s.isFuncDeclaration(); | |
| 534 if (f.vthis) | |
| 535 { | |
| 536 //printf("rewriting e1 to %s's this\n", f.toChars()); | |
| 537 n++; | |
| 538 e1 = new VarExp(loc, f.vthis); | |
| 539 } | |
| 540 } | |
| 541 if (s && s.isClassDeclaration()) | |
| 542 { | |
| 543 e1.type = s.isClassDeclaration().type; | |
| 544 if (n > 1) | |
| 545 e1 = e1.semantic(sc); | |
| 546 } | |
| 547 else | |
| 548 e1 = e1.semantic(sc); | |
| 549 goto L1; | |
| 550 } | |
| 551 /* Can't find a path from e1 to ad | |
| 552 */ | |
| 553 e1.error("this for %s needs to be type %s not type %s", var.toChars(), ad.toChars(), t.toChars()); | |
| 554 } | |
| 555 } | |
| 556 return e1; | |
| 557 } | |
| 558 | |
| 559 /******************************************* | |
| 560 * Given a symbol that could be either a FuncDeclaration or | |
| 561 * a function template, resolve it to a function symbol. | |
| 562 * sc instantiation scope | |
| 563 * loc instantiation location | |
| 564 * targsi initial list of template arguments | |
| 565 * ethis if !null, the 'this' pointer argument | |
| 566 * fargs arguments to function | |
| 567 * flags 1: do not issue error message on no match, just return null | |
| 568 */ | |
| 569 | |
| 570 FuncDeclaration resolveFuncCall(Scope sc, Loc loc, Dsymbol s, | |
| 571 Objects tiargs, | |
| 572 Expression ethis, | |
| 573 Expressions arguments, | |
| 574 int flags) | |
| 575 { | |
| 576 if (!s) | |
| 577 return null; // no match | |
| 578 FuncDeclaration f = s.isFuncDeclaration(); | |
| 579 if (f) | |
| 580 f = f.overloadResolve(loc, ethis, arguments); | |
| 581 else | |
| 582 { | |
| 583 TemplateDeclaration td = s.isTemplateDeclaration(); | |
| 584 assert(td); | |
| 585 f = td.deduceFunctionTemplate(sc, loc, tiargs, null, arguments, flags); | |
| 586 } | |
| 587 return f; | |
| 588 } | |
| 589 | |
| 590 /**************************************** | |
| 591 * Now that we know the exact type of the function we're calling, | |
| 592 * the arguments[] need to be adjusted: | |
| 593 * 1. implicitly convert argument to the corresponding parameter type | |
| 594 * 2. add default arguments for any missing arguments | |
| 595 * 3. do default promotions on arguments corresponding to ... | |
| 596 * 4. add hidden _arguments[] argument | |
| 597 * 5. call copy constructor for struct value arguments | |
| 135 | 598 * Returns: |
| 599 * return type from function | |
| 0 | 600 */ |
| 601 | |
| 135 | 602 Type functionParameters(Loc loc, Scope sc, TypeFunction tf, Expressions arguments) |
| 0 | 603 { |
|
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604 //printf("functionParameters()\n"); |
| 0 | 605 assert(arguments); |
| 606 size_t nargs = arguments ? arguments.dim : 0; | |
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607 size_t nparams = Parameter.dim(tf.parameters); |
| 0 | 608 |
| 609 if (nargs > nparams && tf.varargs == 0) | |
| 610 error(loc, "expected %zu arguments, not %zu for non-variadic function type %s", nparams, nargs, tf.toChars()); | |
| 611 | |
| 135 | 612 uint n = (nargs > nparams) ? nargs : nparams; // n = max(nargs, nparams) |
| 0 | 613 |
| 135 | 614 uint wildmatch = 0; |
| 615 | |
| 0 | 616 int done = 0; |
| 617 for (size_t i = 0; i < n; i++) | |
| 618 { | |
| 619 Expression arg; | |
| 620 | |
| 621 if (i < nargs) | |
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622 arg = arguments[i]; |
| 0 | 623 else |
| 624 arg = null; | |
| 625 | |
| 626 Type tb; | |
| 627 | |
| 628 if (i < nparams) | |
| 629 { | |
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630 auto p = Parameter.getNth(tf.parameters, i); |
| 0 | 631 |
| 632 if (!arg) | |
| 633 { | |
| 634 if (!p.defaultArg) | |
| 635 { | |
| 636 if (tf.varargs == 2 && i + 1 == nparams) | |
| 637 goto L2; | |
| 638 | |
| 639 error(loc, "expected %d function arguments, not %d", nparams, nargs); | |
| 135 | 640 return tf.next; |
| 0 | 641 } |
| 642 arg = p.defaultArg; | |
| 643 arg = arg.copy(); | |
|
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644 version (DMDV2) |
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645 { |
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646 arg = arg.resolveLoc(loc, sc); // __FILE__ and __LINE__ |
| 0 | 647 } |
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648 arguments.push(arg); |
| 0 | 649 nargs++; |
| 650 } | |
| 651 | |
| 652 if (tf.varargs == 2 && i + 1 == nparams) | |
| 653 { | |
| 654 //printf("\t\tvarargs == 2, p.type = '%s'\n", p.type.toChars()); | |
| 655 if (arg.implicitConvTo(p.type)) | |
| 656 { | |
| 657 if (nargs != nparams) | |
|
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658 { |
| 0 | 659 error(loc, "expected %zu function arguments, not %zu", nparams, nargs); |
| 135 | 660 return tf.next; |
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661 } |
| 0 | 662 goto L1; |
| 663 } | |
| 664 L2: | |
| 665 tb = p.type.toBasetype(); /// | |
| 666 Type tret = p.isLazyArray(); | |
| 667 switch (tb.ty) | |
| 668 { | |
| 669 case TY.Tsarray: | |
| 670 case TY.Tarray: | |
| 671 { // Create a static array variable v of type arg.type | |
| 672 version (IN_GCC) { | |
| 673 /* GCC 4.0 does not like zero length arrays used like | |
| 674 this; pass a null array value instead. Could also | |
| 675 just make a one-element array. */ | |
| 676 if (nargs - i == 0) | |
| 677 { | |
| 678 arg = new NullExp(loc); | |
| 679 break; | |
| 680 } | |
| 681 } | |
| 682 Identifier id = Lexer.uniqueId("__arrayArg"); | |
| 683 Type t = new TypeSArray((cast(TypeArray)tb).next, new IntegerExp(nargs - i)); | |
| 684 t = t.semantic(loc, sc); | |
| 685 VarDeclaration v = new VarDeclaration(loc, t, id, new VoidInitializer(loc)); | |
| 135 | 686 v.storage_class |= STCctfe; |
| 0 | 687 v.semantic(sc); |
| 688 v.parent = sc.parent; | |
| 689 //sc.insert(v); | |
| 690 | |
| 691 Expression c = new DeclarationExp(Loc(0), v); | |
| 692 c.type = v.type; | |
| 693 | |
| 694 for (size_t u = i; u < nargs; u++) | |
| 695 { | |
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696 auto a = arguments[u]; |
| 0 | 697 if (tret && !(cast(TypeArray)tb).next.equals(a.type)) |
| 698 a = a.toDelegate(sc, tret); | |
| 699 | |
| 700 Expression e = new VarExp(loc, v); | |
| 701 e = new IndexExp(loc, e, new IntegerExp(u + 1 - nparams)); | |
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702 auto ae = new AssignExp(loc, e, a); |
| 0 | 703 |
| 704 version (DMDV2) { | |
| 705 ae.op = TOK.TOKconstruct; | |
| 706 } | |
| 707 | |
| 708 if (c) | |
| 709 c = new CommaExp(loc, c, ae); | |
| 710 else | |
| 711 c = ae; | |
| 712 } | |
| 713 | |
| 714 arg = new VarExp(loc, v); | |
| 715 if (c) | |
| 716 arg = new CommaExp(loc, c, arg); | |
| 717 break; | |
| 718 } | |
| 719 | |
| 720 case TY.Tclass: | |
| 721 { /* Set arg to be: | |
| 722 * new Tclass(arg0, arg1, ..., argn) | |
| 723 */ | |
| 724 Expressions args = new Expressions(); | |
| 725 args.setDim(nargs - i); | |
| 726 for (size_t u = i; u < nargs; u++) | |
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727 args[u - i] = arguments[u]; |
| 0 | 728 arg = new NewExp(loc, null, null, p.type, args); |
| 729 break; | |
| 730 } | |
| 731 | |
| 732 default: | |
| 733 if (!arg) | |
| 734 { | |
| 735 error(loc, "not enough arguments"); | |
| 135 | 736 return tf.next; |
| 0 | 737 } |
| 738 break; | |
| 739 } | |
| 740 | |
| 741 arg = arg.semantic(sc); | |
| 742 //printf("\targ = '%s'\n", arg.toChars()); | |
| 743 arguments.setDim(i + 1); | |
| 744 done = 1; | |
| 745 } | |
| 746 | |
| 747 L1: | |
| 748 if (!(p.storageClass & STC.STClazy && p.type.ty == TY.Tvoid)) | |
| 749 { | |
| 750 if (p.type != arg.type) | |
| 751 { | |
| 752 //printf("arg.type = %s, p.type = %s\n", arg.type.toChars(), p.type.toChars()); | |
| 109 | 753 if (arg.op == TOKtype) |
| 754 arg.error("cannot pass type %s as function argument", arg.toChars()); | |
| 135 | 755 if (p.type.isWild() && tf.next.isWild()) |
| 756 { | |
| 757 Type t = p.type; | |
| 758 MATCH m = arg.implicitConvTo(t); | |
| 759 if (m == MATCH.MATCHnomatch) | |
| 760 { | |
| 761 t = t.constOf(); | |
| 762 m = arg.implicitConvTo(t); | |
| 763 if (m == MATCHnomatch) | |
| 764 { | |
| 765 t = t.sharedConstOf(); | |
| 766 m = arg.implicitConvTo(t); | |
| 767 } | |
| 768 wildmatch |= p.type.wildMatch(arg.type); | |
| 769 } | |
| 770 arg = arg.implicitCastTo(sc, t); | |
| 771 } | |
| 772 else | |
| 773 arg = arg.implicitCastTo(sc, p.type); | |
| 0 | 774 arg = arg.optimize(WANT.WANTvalue); |
| 775 } | |
| 776 } | |
| 777 if (p.storageClass & STC.STCref) | |
| 778 { | |
| 779 arg = arg.toLvalue(sc, arg); | |
| 780 } | |
| 781 else if (p.storageClass & STC.STCout) | |
| 782 { | |
| 783 arg = arg.modifiableLvalue(sc, arg); | |
| 784 } | |
| 785 | |
| 109 | 786 tb = arg.type.toBasetype(); |
| 787 version(SARRAYVALUE) {} else | |
| 788 { | |
| 0 | 789 // Convert static arrays to pointers |
| 790 if (tb.ty == TY.Tsarray) | |
| 791 { | |
| 792 arg = arg.checkToPointer(); | |
| 793 } | |
| 109 | 794 } |
| 0 | 795 version (DMDV2) { |
| 796 if (tb.ty == TY.Tstruct && !(p.storageClass & (STC.STCref | STC.STCout))) | |
| 797 { | |
| 798 arg = callCpCtor(loc, sc, arg); | |
| 799 } | |
| 800 } | |
| 801 | |
| 802 // Convert lazy argument to a delegate | |
| 803 if (p.storageClass & STC.STClazy) | |
| 804 { | |
| 805 arg = arg.toDelegate(sc, p.type); | |
| 806 } | |
| 807 version (DMDV2) { | |
| 808 /* Look for arguments that cannot 'escape' from the called | |
| 809 * function. | |
| 810 */ | |
| 811 if (!tf.parameterEscapes(p)) | |
| 812 { | |
| 813 /* Function literals can only appear once, so if this | |
| 814 * appearance was scoped, there cannot be any others. | |
| 815 */ | |
| 816 if (arg.op == TOK.TOKfunction) | |
| 817 { | |
| 818 FuncExp fe = cast(FuncExp)arg; | |
| 819 fe.fd.tookAddressOf = 0; | |
| 820 } | |
| 821 | |
| 822 /* For passing a delegate to a scoped parameter, | |
| 823 * this doesn't count as taking the address of it. | |
| 824 * We only worry about 'escaping' references to the function. | |
| 825 */ | |
| 826 else if (arg.op == TOK.TOKdelegate) | |
| 827 { | |
| 828 DelegateExp de = cast(DelegateExp)arg; | |
| 829 if (de.e1.op == TOK.TOKvar) | |
| 830 { | |
| 831 VarExp ve = cast(VarExp)de.e1; | |
| 832 FuncDeclaration f = ve.var.isFuncDeclaration(); | |
| 833 if (f) | |
| 834 { | |
| 835 f.tookAddressOf--; | |
| 836 //printf("tookAddressOf = %d\n", f.tookAddressOf); | |
| 837 } | |
| 838 } | |
| 839 } | |
| 840 } | |
| 841 } | |
| 842 } | |
| 843 else | |
| 844 { | |
| 845 // If not D linkage, do promotions | |
| 846 if (tf.linkage != LINK.LINKd) | |
| 847 { | |
| 848 // Promote bytes, words, etc., to ints | |
| 849 arg = arg.integralPromotions(sc); | |
| 850 | |
| 851 // Promote floats to doubles | |
| 852 switch (arg.type.ty) | |
| 853 { | |
| 854 case TY.Tfloat32: | |
| 855 arg = arg.castTo(sc, Type.tfloat64); | |
| 856 break; | |
| 857 | |
| 858 case TY.Timaginary32: | |
| 859 arg = arg.castTo(sc, Type.timaginary64); | |
| 860 break; | |
| 861 default: | |
| 862 break; | |
| 863 } | |
| 864 } | |
| 865 | |
| 866 // Convert static arrays to dynamic arrays | |
| 867 tb = arg.type.toBasetype(); | |
| 868 if (tb.ty == TY.Tsarray) | |
| 869 { | |
| 870 TypeSArray ts = cast(TypeSArray)tb; | |
| 871 Type ta = ts.next.arrayOf(); | |
| 872 if (ts.size(arg.loc) == 0) | |
| 135 | 873 arg = new NullExp(arg.loc, ta); |
| 0 | 874 else |
| 875 arg = arg.castTo(sc, ta); | |
| 876 } | |
| 877 version (DMDV2) { | |
| 73 | 878 if (tb.ty == Tstruct) |
| 0 | 879 { |
| 880 arg = callCpCtor(loc, sc, arg); | |
| 881 } | |
| 73 | 882 } |
| 0 | 883 |
| 73 | 884 // Give error for overloaded function addresses |
| 885 if (arg.op == TOKsymoff) | |
| 886 { | |
| 887 SymOffExp se = cast(SymOffExp)arg; | |
| 888 version (DMDV2) { | |
| 889 bool aux = (se.hasOverloads != 0); | |
| 890 } else { | |
| 891 bool aux = true; | |
| 0 | 892 } |
| 73 | 893 if (aux && !se.var.isFuncDeclaration().isUnique()) |
| 894 arg.error("function %s is overloaded", arg.toChars()); | |
| 895 } | |
| 896 | |
| 897 arg.rvalue(); | |
| 898 } | |
| 899 | |
| 0 | 900 arg = arg.optimize(WANT.WANTvalue); |
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901 arguments[i] = arg; |
| 0 | 902 if (done) |
| 903 break; | |
| 904 } | |
| 905 | |
| 906 // If D linkage and variadic, add _arguments[] as first argument | |
| 907 if (tf.linkage == LINK.LINKd && tf.varargs == 1) | |
| 908 { | |
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909 assert(arguments.dim >= nparams); |
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910 auto e = createTypeInfoArray(sc, &arguments[nparams], arguments.dim - nparams); |
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911 arguments.insert(0, e); |
| 0 | 912 } |
| 135 | 913 |
| 914 Type tret = tf.next; | |
| 915 if (wildmatch) | |
| 916 { /* Adjust function return type based on wildmatch | |
| 917 */ | |
| 918 //printf("wildmatch = x%x\n", wildmatch); | |
| 919 assert(tret.isWild()); | |
| 920 if (wildmatch & MOD.MODconst || wildmatch & (wildmatch - 1)) | |
| 921 tret = tret.constOf(); | |
| 922 else if (wildmatch & MOD.MODimmutable) | |
| 923 tret = tret.invariantOf(); | |
| 924 else | |
| 925 { | |
| 926 assert(wildmatch & MOD.MODmutable); | |
| 927 tret = tret.mutableOf(); | |
| 928 } | |
| 929 } | |
| 930 return tret; | |
| 0 | 931 } |
| 932 | |
|
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933 /****************************** |
|
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934 * Perform canThrow() on an array of Expressions. |
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935 */ |
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936 |
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937 version (DMDV2) { |
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938 bool arrayExpressionCanThrow(Expressions exps) |
|
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939 { |
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940 if (exps) |
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941 { |
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942 foreach (e; exps) |
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943 { |
|
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944 if (e && e.canThrow()) |
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945 return true; |
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946 } |
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947 } |
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|
948 return false; |
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|
949 } |
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950 } |
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951 |
| 0 | 952 /**************************************** |
| 953 * Expand tuples. | |
| 954 */ | |
| 955 | |
| 956 void expandTuples(Expressions exps) | |
| 957 { | |
| 958 //printf("expandTuples()\n"); | |
| 959 if (exps) | |
| 960 { | |
| 961 for (size_t i = 0; i < exps.dim; i++) | |
| 962 { | |
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963 auto arg = exps[i]; |
| 0 | 964 if (!arg) |
| 965 continue; | |
| 966 | |
| 967 // Look for tuple with 0 members | |
| 968 if (arg.op == TOK.TOKtype) | |
| 57 | 969 { |
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970 auto e = cast(TypeExp)arg; |
| 0 | 971 if (e.type.toBasetype().ty == TY.Ttuple) |
| 972 { | |
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973 auto tt = cast(TypeTuple)e.type.toBasetype(); |
| 0 | 974 |
| 975 if (!tt.arguments || tt.arguments.dim == 0) | |
| 976 { | |
| 977 exps.remove(i); | |
| 978 if (i == exps.dim) | |
| 979 return; | |
| 980 i--; | |
| 981 continue; | |
| 982 } | |
| 983 } | |
| 984 } | |
| 985 | |
| 986 // Inline expand all the tuples | |
| 987 while (arg.op == TOK.TOKtuple) | |
| 988 { | |
|
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989 auto te = cast(TupleExp)arg; |
| 0 | 990 |
| 991 exps.remove(i); // remove arg | |
| 57 | 992 exps.insert(i, te.exps); // replace with tuple contents |
| 0 | 993 |
| 994 if (i == exps.dim) | |
| 995 return; // empty tuple, no more arguments | |
| 996 | |
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997 arg = exps[i]; |
| 0 | 998 } |
| 999 } | |
| 1000 } | |
| 1001 } | |
| 1002 | |
| 1003 /************************************************** | |
| 1004 * Write out argument types to buf. | |
| 1005 */ | |
| 1006 | |
| 1007 void argExpTypesToCBuffer(OutBuffer buf, Expressions arguments, HdrGenState* hgs) | |
| 1008 { | |
| 1009 if (arguments) | |
| 1010 { | |
| 1011 scope OutBuffer argbuf = new OutBuffer(); | |
| 1012 | |
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1013 foreach (size_t i, Expression arg; arguments) |
| 0 | 1014 { |
| 1015 if (i) | |
| 1016 buf.writeByte(','); | |
| 1017 | |
| 1018 argbuf.reset(); | |
| 1019 arg.type.toCBuffer2(argbuf, hgs, MOD.MODundefined); | |
| 1020 buf.write(argbuf); | |
| 1021 } | |
| 1022 } | |
| 1023 } | |
| 1024 | |
| 1025 /**************************************** | |
| 1026 * Determine if scope sc has package level access to s. | |
| 1027 */ | |
| 1028 | |
| 1029 bool hasPackageAccess(Scope sc, Dsymbol s) | |
| 1030 { | |
| 1031 version (LOG) { | |
| 1032 printf("hasPackageAccess(s = '%s', sc = '%p')\n", s.toChars(), sc); | |
| 1033 } | |
| 1034 | |
| 1035 for (; s; s = s.parent) | |
| 1036 { | |
| 1037 if (s.isPackage() && !s.isModule()) | |
| 1038 break; | |
| 1039 } | |
| 1040 version (LOG) { | |
| 1041 if (s) | |
| 1042 printf("\tthis is in package '%s'\n", s.toChars()); | |
| 1043 } | |
| 1044 | |
| 1045 if (s && s == sc.module_.parent) | |
| 1046 { | |
| 1047 version (LOG) { | |
| 1048 printf("\ts is in same package as sc\n"); | |
| 1049 } | |
| 1050 return true; | |
| 1051 } | |
| 1052 | |
| 1053 | |
| 1054 version (LOG) { | |
| 1055 printf("\tno package access\n"); | |
| 1056 } | |
| 1057 | |
| 1058 return false; | |
| 1059 } | |
| 1060 | |
| 1061 /********************************************* | |
| 1062 * Call copy constructor for struct value argument. | |
| 1063 */ | |
| 1064 version (DMDV2) { | |
| 1065 Expression callCpCtor(Loc loc, Scope sc, Expression e) | |
| 1066 { | |
| 1067 Type tb = e.type.toBasetype(); | |
| 1068 assert(tb.ty == Tstruct); | |
| 1069 StructDeclaration sd = (cast(TypeStruct)tb).sym; | |
| 1070 if (sd.cpctor) | |
| 1071 { | |
| 1072 /* Create a variable tmp, and replace the argument e with: | |
| 1073 * (tmp = e),tmp | |
| 1074 * and let AssignExp() handle the construction. | |
| 1075 * This is not the most efficent, ideally tmp would be constructed | |
| 1076 * directly onto the stack. | |
| 1077 */ | |
| 1078 Identifier idtmp = Lexer.uniqueId("__tmp"); | |
| 1079 VarDeclaration tmp = new VarDeclaration(loc, tb, idtmp, new ExpInitializer(Loc(0), e)); | |
| 1080 Expression ae = new DeclarationExp(loc, tmp); | |
| 1081 e = new CommaExp(loc, ae, new VarExp(loc, tmp)); | |
| 1082 e = e.semantic(sc); | |
| 1083 } | |
| 1084 return e; | |
| 1085 } | |
| 1086 } | |
| 1087 | |
| 1088 /*************************************** | |
| 1089 * Create a static array of TypeInfo references | |
| 1090 * corresponding to an array of Expression's. | |
| 1091 * Used to supply hidden _arguments[] value for variadic D functions. | |
| 1092 */ | |
| 1093 | |
| 1094 Expression createTypeInfoArray(Scope sc, Expression* exps, int dim) | |
| 1095 { | |
| 79 | 1096 static if (true) |
| 1097 { | |
| 57 | 1098 /* Get the corresponding TypeInfo_Tuple and |
| 1099 * point at its elements[]. | |
| 1100 */ | |
| 1101 | |
| 1102 /* Create the TypeTuple corresponding to the types of args[] | |
| 1103 */ | |
|
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1104 auto args = new Parameters; |
| 57 | 1105 args.setDim(dim); |
| 1106 for (size_t i = 0; i < dim; i++) | |
| 1107 { | |
|
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|
1108 auto arg = new Parameter(STCin, exps[i].type, null, null); |
|
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|
1109 args[i] = arg; |
| 57 | 1110 } |
| 1111 TypeTuple tup = new TypeTuple(args); | |
| 1112 Expression e = tup.getTypeInfo(sc); | |
| 1113 e = e.optimize(WANTvalue); | |
| 1114 assert(e.op == TOKsymoff); // should be SymOffExp | |
| 1115 | |
| 79 | 1116 version (BREAKABI) |
| 1117 { | |
| 57 | 1118 /* |
| 1119 * Should just pass a reference to TypeInfo_Tuple instead, | |
| 1120 * but that would require existing code to be recompiled. | |
| 1121 * Source compatibility can be maintained by computing _arguments[] | |
| 1122 * at the start of the called function by offseting into the | |
| 1123 * TypeInfo_Tuple reference. | |
| 1124 */ | |
| 1125 | |
| 79 | 1126 } |
| 1127 else | |
| 1128 { | |
| 57 | 1129 // Advance to elements[] member of TypeInfo_Tuple |
| 1130 SymOffExp se = cast(SymOffExp)e; | |
| 1131 se.offset += PTRSIZE + PTRSIZE; | |
| 1132 | |
| 1133 // Set type to TypeInfo[]* | |
| 1134 se.type = Type.typeinfo.type.arrayOf().pointerTo(); | |
| 1135 | |
| 1136 // Indirect to get the _arguments[] value | |
| 1137 e = new PtrExp(Loc(0), se); | |
| 1138 e.type = se.type.next; | |
| 1139 } | |
| 1140 return e; | |
| 79 | 1141 } // of static if (true) |
| 1142 else | |
| 1143 { | |
| 57 | 1144 /* Improvements: |
| 1145 * 1) create an array literal instead, | |
| 1146 * as it would eliminate the extra dereference of loading the | |
| 1147 * static variable. | |
| 1148 */ | |
| 1149 | |
| 1150 ArrayInitializer ai = new ArrayInitializer(Loc(0)); | |
| 1151 VarDeclaration v; | |
| 1152 Type t; | |
| 1153 Expression e; | |
| 1154 scope OutBuffer buf = new OutBuffer(); | |
| 1155 Identifier id; | |
| 1156 string name; | |
| 1157 | |
| 1158 // Generate identifier for _arguments[] | |
| 1159 buf.writestring("_arguments_"); | |
| 1160 for (int i = 0; i < dim; i++) | |
| 1161 { | |
| 1162 t = exps[i].type; | |
| 1163 t.toDecoBuffer(buf); | |
| 1164 } | |
| 1165 buf.writeByte(0); | |
| 1166 id = Lexer.idPool(buf.extractString()); | |
| 1167 | |
| 1168 Module m = sc.module_; | |
| 1169 Dsymbol s = m.symtab.lookup(id); | |
| 1170 | |
| 1171 if (s && s.parent == m) | |
| 1172 { | |
| 1173 // Use existing one | |
| 1174 v = s.isVarDeclaration(); | |
| 1175 assert(v); | |
| 1176 } | |
| 1177 else | |
| 1178 { | |
| 1179 // Generate new one | |
| 1180 | |
| 1181 for (int i = 0; i < dim; i++) | |
| 1182 { | |
| 1183 t = exps[i].type; | |
| 1184 e = t.getTypeInfo(sc); | |
| 1185 ai.addInit(new IntegerExp(i), new ExpInitializer(0, e)); | |
| 1186 } | |
| 1187 | |
| 1188 t = Type.typeinfo.type.arrayOf(); | |
| 1189 ai.type = t; | |
| 1190 v = new VarDeclaration(0, t, id, ai); | |
| 1191 m.members.push(v); | |
| 79 | 1192 m.symtabInsert(v); |
| 57 | 1193 sc = sc.push(); |
| 1194 sc.linkage = LINKc; | |
| 1195 sc.stc = STCstatic | STCcomdat; | |
| 1196 ai.semantic(sc, t); | |
| 1197 v.semantic(sc); | |
| 1198 v.parent = m; | |
| 1199 sc = sc.pop(); | |
| 1200 } | |
| 1201 e = new VarExp(0, v); | |
| 1202 e = e.semantic(sc); | |
| 1203 return e; | |
| 1204 } | |
| 0 | 1205 } |
| 1206 | |
| 1207 /************************************** | |
| 1208 * Evaluate builtin function. | |
| 1209 * Return result: null if cannot evaluate it. | |
| 1210 */ | |
| 1211 | |
| 53 | 1212 extern(C) extern real sinl(real); |
| 1213 extern(C) extern real cosl(real); | |
| 1214 extern(C) extern real tanl(real); | |
| 1215 extern(C) extern real sqrtl(real); | |
| 1216 extern(C) extern real fabsl(real); | |
| 1217 | |
| 0 | 1218 Expression eval_builtin(BUILTIN builtin, Expressions arguments) |
| 1219 { | |
| 53 | 1220 assert(arguments && arguments.dim); |
|
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|
1221 auto arg0 = arguments[0]; |
| 53 | 1222 Expression e = null; |
| 1223 switch (builtin) | |
| 1224 { | |
| 1225 case BUILTINsin: | |
| 1226 if (arg0.op == TOKfloat64) | |
| 1227 e = new RealExp(Loc(0), sinl(arg0.toReal()), arg0.type); | |
| 1228 break; | |
| 1229 | |
| 1230 case BUILTINcos: | |
| 1231 if (arg0.op == TOKfloat64) | |
| 1232 e = new RealExp(Loc(0), cosl(arg0.toReal()), arg0.type); | |
| 1233 break; | |
| 1234 | |
| 1235 case BUILTINtan: | |
| 1236 if (arg0.op == TOKfloat64) | |
| 1237 e = new RealExp(Loc(0), tanl(arg0.toReal()), arg0.type); | |
| 1238 break; | |
| 1239 | |
| 1240 case BUILTINsqrt: | |
| 1241 if (arg0.op == TOKfloat64) | |
| 1242 e = new RealExp(Loc(0), sqrtl(arg0.toReal()), arg0.type); | |
| 1243 break; | |
| 1244 | |
| 1245 case BUILTINfabs: | |
| 1246 if (arg0.op == TOKfloat64) | |
| 1247 e = new RealExp(Loc(0), fabsl(arg0.toReal()), arg0.type); | |
| 1248 break; | |
| 1249 } | |
| 1250 return e; | |
| 0 | 1251 } |
| 1252 | |
| 1253 Expression fromConstInitializer(int result, Expression e1) | |
| 1254 { | |
| 1255 //printf("fromConstInitializer(result = %x, %s)\n", result, e1.toChars()); | |
| 1256 //static int xx; if (xx++ == 10) assert(0); | |
| 1257 Expression e = e1; | |
| 1258 if (e1.op == TOK.TOKvar) | |
| 1259 { | |
| 1260 VarExp ve = cast(VarExp)e1; | |
| 1261 VarDeclaration v = ve.var.isVarDeclaration(); | |
| 1262 e = expandVar(result, v); | |
| 1263 if (e) | |
| 1264 { | |
| 1265 if (e.type != e1.type) | |
| 1266 { | |
| 1267 // Type 'paint' operation | |
| 1268 e = e.copy(); | |
| 1269 e.type = e1.type; | |
| 1270 } | |
| 79 | 1271 e.loc = e1.loc; |
| 0 | 1272 } |
| 1273 else | |
| 1274 { | |
| 1275 e = e1; | |
| 1276 } | |
| 1277 } | |
| 1278 return e; | |
| 1279 } | |
| 1280 | |
| 1281 /************************************* | |
| 1282 * If variable has a const initializer, | |
| 1283 * return that initializer. | |
| 1284 */ | |
| 1285 | |
| 1286 Expression expandVar(int result, VarDeclaration v) | |
| 1287 { | |
| 1288 //printf("expandVar(result = %d, v = %p, %s)\n", result, v, v ? v.toChars() : "null"); | |
| 1289 | |
| 1290 Expression e = null; | |
| 1291 if (!v) | |
| 1292 return e; | |
| 1293 | |
| 135 | 1294 if (v.isConst() || v.isImmutable() || v.storage_class & STC.STCmanifest) |
| 0 | 1295 { |
| 1296 if (!v.type) | |
| 1297 { | |
| 1298 //error("ICE"); | |
| 1299 return e; | |
| 1300 } | |
| 1301 | |
| 1302 Type tb = v.type.toBasetype(); | |
| 1303 if (result & WANT.WANTinterpret || v.storage_class & STC.STCmanifest || (tb.ty != TY.Tsarray && tb.ty != TY.Tstruct)) | |
| 1304 { | |
| 1305 if (v.init) | |
| 1306 { | |
| 1307 if (v.inuse) | |
| 1308 { | |
| 1309 if (v.storage_class & STC.STCmanifest) | |
| 1310 v.error("recursive initialization of constant"); | |
| 1311 goto L1; | |
| 1312 } | |
| 1313 Expression ei = v.init.toExpression(); | |
| 1314 if (!ei) | |
| 1315 goto L1; | |
| 1316 if (ei.op == TOK.TOKconstruct || ei.op == TOK.TOKblit) | |
| 1317 { | |
| 1318 AssignExp ae = cast(AssignExp)ei; | |
| 1319 ei = ae.e2; | |
| 1320 if (ei.isConst() != 1 && ei.op != TOK.TOKstring) | |
| 1321 goto L1; | |
| 1322 if (ei.type != v.type) | |
| 1323 goto L1; | |
| 1324 } | |
| 1325 if (v.scope_) | |
| 1326 { | |
| 1327 v.inuse++; | |
| 1328 e = ei.syntaxCopy(); | |
| 1329 e = e.semantic(v.scope_); | |
| 1330 e = e.implicitCastTo(v.scope_, v.type); | |
| 1331 // enabling this line causes test22 in test suite to fail | |
| 1332 //ei.type = e.type; | |
| 1333 v.scope_ = null; | |
| 1334 v.inuse--; | |
| 1335 } | |
| 1336 else if (!ei.type) | |
| 1337 { | |
| 1338 goto L1; | |
| 1339 } | |
| 1340 else | |
| 1341 // Should remove the copy() operation by | |
| 1342 // making all mods to expressions copy-on-write | |
| 1343 e = ei.copy(); | |
| 1344 } | |
| 1345 else | |
| 1346 { | |
| 1347 static if (true) { | |
| 1348 goto L1; | |
| 1349 } else { | |
| 1350 // BUG: what if const is initialized in constructor? | |
| 1351 e = v.type.defaultInit(); | |
| 1352 e.loc = e1.loc; | |
| 1353 } | |
| 1354 } | |
| 1355 if (e.type != v.type) | |
| 1356 { | |
| 1357 e = e.castTo(null, v.type); | |
| 1358 } | |
| 1359 v.inuse++; | |
| 1360 e = e.optimize(result); | |
| 1361 v.inuse--; | |
| 1362 } | |
| 1363 } | |
| 1364 L1: | |
| 1365 //if (e) printf("\te = %s, e.type = %s\n", e.toChars(), e.type.toChars()); | |
| 1366 return e; | |
| 1367 } | |
| 1368 | |
| 1369 /**************************************** | |
| 1370 * Check access to d for expression e.d | |
| 1371 */ | |
| 1372 | |
| 1373 void accessCheck(Loc loc, Scope sc, Expression e, Declaration d) | |
| 1374 { | |
| 1375 version (LOG) { | |
| 1376 if (e) | |
| 1377 { | |
| 1378 printf("accessCheck(%s . %s)\n", e.toChars(), d.toChars()); | |
| 1379 printf("\te.type = %s\n", e.type.toChars()); | |
| 1380 } | |
| 1381 else | |
| 1382 { | |
| 1383 //printf("accessCheck(%s)\n", d.toChars()); | |
| 1384 } | |
| 1385 } | |
| 1386 if (!e) | |
| 1387 { | |
| 1388 if (d.prot() == PROT.PROTprivate && d.getModule() != sc.module_ || | |
| 1389 d.prot() == PROT.PROTpackage && !hasPackageAccess(sc, d)) | |
| 1390 | |
| 1391 error(loc, "%s %s.%s is not accessible from %s", | |
| 1392 d.kind(), d.getModule().toChars(), d.toChars(), sc.module_.toChars()); | |
| 1393 } | |
| 1394 else if (e.type.ty == TY.Tclass) | |
| 1395 { | |
| 1396 // Do access check | |
| 1397 ClassDeclaration cd; | |
| 1398 | |
| 1399 cd = cast(ClassDeclaration)((cast(TypeClass)e.type).sym); | |
| 1400 static if (true) { | |
| 1401 if (e.op == TOK.TOKsuper) | |
| 1402 { | |
| 1403 ClassDeclaration cd2 = sc.func.toParent().isClassDeclaration(); | |
| 1404 if (cd2) | |
| 1405 cd = cd2; | |
| 1406 } | |
| 1407 } | |
| 1408 cd.accessCheck(loc, sc, d); | |
| 1409 } | |
| 1410 else if (e.type.ty == TY.Tstruct) | |
| 1411 { | |
| 1412 // Do access check | |
| 1413 StructDeclaration cd = cast(StructDeclaration)((cast(TypeStruct)e.type).sym); | |
| 1414 cd.accessCheck(loc, sc, d); | |
| 1415 } | |
| 1416 } | |
| 1417 | |
| 1418 /***************************************** | |
| 1419 * Given array of arguments and an aggregate type, | |
| 1420 * if any of the argument types are missing, attempt to infer | |
| 1421 * them from the aggregate type. | |
| 1422 */ | |
| 1423 | |
|
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changeset
|
1424 void inferApplyArgTypes(TOK op, Parameters arguments, Expression aggr) |
| 0 | 1425 { |
| 1426 if (!arguments || !arguments.dim) | |
| 1427 return; | |
| 1428 | |
| 1429 /* Return if no arguments need types. | |
| 1430 */ | |
| 1431 for (size_t u = 0; 1; u++) | |
| 1432 { | |
| 1433 if (u == arguments.dim) | |
| 1434 return; | |
| 1435 | |
|
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Eldar Insafutdinov <e.insafutdinov@gmail.com>
parents:
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diff
changeset
|
1436 auto arg = arguments[u]; |
| 0 | 1437 if (!arg.type) |
| 1438 break; | |
| 1439 } | |
| 1440 | |
| 135 | 1441 Dsymbol s; |
| 0 | 1442 AggregateDeclaration ad; |
| 1443 | |
|
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129
diff
changeset
|
1444 auto arg = arguments[0]; |
| 0 | 1445 Type taggr = aggr.type; |
| 1446 if (!taggr) | |
| 1447 return; | |
| 1448 Type tab = taggr.toBasetype(); | |
| 1449 switch (tab.ty) | |
| 1450 { | |
| 1451 case TY.Tarray: | |
| 1452 case TY.Tsarray: | |
| 1453 case TY.Ttuple: | |
| 1454 if (arguments.dim == 2) | |
| 1455 { | |
| 1456 if (!arg.type) | |
| 1457 arg.type = Type.tsize_t; // key type | |
|
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diff
changeset
|
1458 arg = arguments[1]; |
| 0 | 1459 } |
| 1460 if (!arg.type && tab.ty != TY.Ttuple) | |
| 1461 arg.type = tab.nextOf(); // value type | |
| 1462 break; | |
| 1463 | |
| 1464 case TY.Taarray: | |
| 1465 { | |
|
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changeset
|
1466 auto taa = cast(TypeAArray)tab; |
| 0 | 1467 |
| 1468 if (arguments.dim == 2) | |
| 1469 { | |
| 1470 if (!arg.type) | |
| 1471 arg.type = taa.index; // key type | |
|
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|
1472 arg = arguments[1]; |
| 0 | 1473 } |
| 1474 if (!arg.type) | |
| 1475 arg.type = taa.next; // value type | |
| 1476 break; | |
| 1477 } | |
| 1478 | |
| 1479 case TY.Tclass: | |
| 1480 ad = (cast(TypeClass)tab).sym; | |
| 1481 goto Laggr; | |
| 1482 | |
| 1483 case TY.Tstruct: | |
| 1484 ad = (cast(TypeStruct)tab).sym; | |
| 1485 goto Laggr; | |
| 1486 | |
| 1487 Laggr: | |
| 135 | 1488 s = search_function(ad, (op == TOKforeach_reverse) ? Id.applyReverse : Id.apply); |
| 1489 if (s) | |
| 1490 goto Lapply; // prefer opApply | |
| 1491 | |
| 0 | 1492 if (arguments.dim == 1) |
| 1493 { | |
| 1494 if (!arg.type) | |
| 1495 { | |
| 1496 /* Look for a head() or rear() overload | |
| 1497 */ | |
| 1498 Identifier id = (op == TOK.TOKforeach) ? Id.Fhead : Id.Ftoe; | |
| 135 | 1499 Dsymbol s1 = search_function(ad, id); |
| 1500 FuncDeclaration fd = s1 ? s1.isFuncDeclaration() : null; | |
| 0 | 1501 if (!fd) |
| 1502 { | |
| 135 | 1503 if (s1 && s1.isTemplateDeclaration()) |
| 0 | 1504 break; |
| 1505 goto Lapply; | |
| 1506 } | |
| 1507 arg.type = fd.type.nextOf(); | |
| 1508 } | |
| 1509 break; | |
| 1510 } | |
| 1511 | |
| 1512 Lapply: | |
| 1513 { /* Look for an | |
| 1514 * int opApply(int delegate(ref Type [, ...]) dg); | |
| 1515 * overload | |
| 1516 */ | |
| 1517 if (s) | |
| 1518 { | |
| 1519 FuncDeclaration fd = s.isFuncDeclaration(); | |
| 1520 if (fd) | |
| 1521 { | |
| 1522 inferApplyArgTypesX(fd, arguments); | |
| 1523 break; | |
| 1524 } | |
| 1525 static if (false) { | |
| 1526 TemplateDeclaration td = s.isTemplateDeclaration(); | |
| 1527 if (td) | |
| 1528 { | |
| 1529 inferApplyArgTypesZ(td, arguments); | |
| 1530 break; | |
| 1531 } | |
| 1532 } | |
| 1533 } | |
| 1534 break; | |
| 1535 } | |
| 1536 | |
| 1537 case TY.Tdelegate: | |
| 1538 { | |
| 1539 if (0 && aggr.op == TOK.TOKdelegate) | |
| 1540 { | |
| 1541 DelegateExp de = cast(DelegateExp)aggr; | |
| 1542 | |
| 1543 FuncDeclaration fd = de.func.isFuncDeclaration(); | |
| 1544 if (fd) | |
| 1545 inferApplyArgTypesX(fd, arguments); | |
| 1546 } | |
| 1547 else | |
| 1548 { | |
| 1549 inferApplyArgTypesY(cast(TypeFunction)tab.nextOf(), arguments); | |
| 1550 } | |
| 1551 break; | |
| 1552 } | |
| 1553 | |
| 1554 default: | |
| 1555 break; // ignore error, caught later | |
| 1556 } | |
| 1557 } | |
| 1558 | |
| 1559 struct Param3 | |
| 1560 { | |
| 1561 /******************************** | |
| 1562 * Recursive helper function, | |
| 1563 * analogous to func.overloadResolveX(). | |
| 1564 */ | |
| 1565 | |
|
17
ddae60498573
Implemented mixin statements, DefaultInitExps, FileInitExps, LineInitExps and __traits.
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parents:
16
diff
changeset
|
1566 int fp3(void*, FuncDeclaration f) |
| 0 | 1567 { |
|
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parents:
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diff
changeset
|
1568 auto tf = cast(TypeFunction)f.type; |
| 0 | 1569 if (inferApplyArgTypesY(tf, arguments) == 1) |
| 1570 return 0; | |
| 1571 | |
| 1572 if (arguments.dim == 0) | |
| 1573 return 1; | |
| 1574 | |
| 1575 return 0; | |
| 1576 } | |
| 1577 | |
|
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dmdfe 2.037 first main iteration
Eldar Insafutdinov <e.insafutdinov@gmail.com>
parents:
129
diff
changeset
|
1578 Parameters arguments; |
| 0 | 1579 } |
| 1580 | |
|
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dmdfe 2.037 first main iteration
Eldar Insafutdinov <e.insafutdinov@gmail.com>
parents:
129
diff
changeset
|
1581 void inferApplyArgTypesX(FuncDeclaration fstart, Parameters arguments) |
| 0 | 1582 { |
| 1583 Param3 p3; | |
| 1584 p3.arguments = arguments; | |
|
17
ddae60498573
Implemented mixin statements, DefaultInitExps, FileInitExps, LineInitExps and __traits.
Robert Clipsham <robert@octarineparrot.com>
parents:
16
diff
changeset
|
1585 overloadApply(fstart, &p3.fp3, cast(void*)arguments); |
| 0 | 1586 } |
| 1587 | |
| 1588 /****************************** | |
| 1589 * Infer arguments from type of function. | |
| 1590 * Returns: | |
| 1591 * 0 match for this function | |
| 1592 * 1 no match for this function | |
| 1593 */ | |
| 1594 | |
|
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dmdfe 2.037 first main iteration
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parents:
129
diff
changeset
|
1595 int inferApplyArgTypesY(TypeFunction tf, Parameters arguments) |
| 0 | 1596 { |
| 1597 size_t nparams; | |
|
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1598 Parameter p; |
| 0 | 1599 |
|
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|
1600 if (Parameter.dim(tf.parameters) != 1) |
| 0 | 1601 goto Lnomatch; |
| 1602 | |
|
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|
1603 p = Parameter.getNth(tf.parameters, 0); |
| 0 | 1604 if (p.type.ty != TY.Tdelegate) |
| 1605 goto Lnomatch; | |
| 1606 | |
| 1607 tf = cast(TypeFunction)p.type.nextOf(); | |
| 1608 assert(tf.ty == TY.Tfunction); | |
| 1609 | |
| 1610 /* We now have tf, the type of the delegate. Match it against | |
| 1611 * the arguments, filling in missing argument types. | |
| 1612 */ | |
|
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|
1613 nparams = Parameter.dim(tf.parameters); |
| 0 | 1614 if (nparams == 0 || tf.varargs) |
| 1615 goto Lnomatch; // not enough parameters | |
| 1616 if (arguments.dim != nparams) | |
| 1617 goto Lnomatch; // not enough parameters | |
| 1618 | |
| 1619 for (size_t u = 0; u < nparams; u++) | |
| 1620 { | |
|
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|
1621 auto arg = arguments[u]; |
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|
1622 auto param = Parameter.getNth(tf.parameters, u); |
| 0 | 1623 if (arg.type) |
| 1624 { | |
| 1625 if (!arg.type.equals(param.type)) | |
| 1626 { | |
| 1627 /* Cannot resolve argument types. Indicate an | |
| 1628 * error by setting the number of arguments to 0. | |
| 1629 */ | |
| 1630 arguments.dim = 0; | |
| 1631 goto Lmatch; | |
| 1632 } | |
| 1633 continue; | |
| 1634 } | |
| 1635 arg.type = param.type; | |
| 1636 } | |
| 1637 | |
| 1638 Lmatch: | |
| 1639 return 0; | |
| 1640 | |
| 1641 Lnomatch: | |
| 1642 return 1; | |
| 1643 } | |
| 1644 | |
| 1645 /************************************************** | |
| 1646 * Write expression out to buf, but wrap it | |
| 1647 * in ( ) if its precedence is less than pr. | |
| 1648 */ | |
| 1649 | |
| 1650 void expToCBuffer(OutBuffer buf, HdrGenState* hgs, Expression e, PREC pr) | |
| 1651 { | |
| 1652 //if (precedence[e.op] == 0) e.dump(0); | |
| 1653 if (precedence[e.op] < pr || | |
| 1654 /* Despite precedence, we don't allow a<b<c expressions. | |
| 1655 * They must be parenthesized. | |
| 1656 */ | |
| 1657 (pr == PREC.PREC_rel && precedence[e.op] == pr)) | |
| 1658 { | |
| 1659 buf.writeByte('('); | |
| 1660 e.toCBuffer(buf, hgs); | |
| 1661 buf.writeByte(')'); | |
| 1662 } | |
| 1663 else | |
| 1664 e.toCBuffer(buf, hgs); | |
| 1665 } | |
| 1666 | |
| 1667 /************************************************** | |
| 1668 * Write out argument list to buf. | |
| 1669 */ | |
| 1670 | |
| 1671 void argsToCBuffer(OutBuffer buf, Expressions arguments, HdrGenState* hgs) | |
| 1672 { | |
| 1673 if (arguments) | |
| 1674 { | |
|
84
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|
1675 foreach (size_t i, Expression arg; arguments) |
| 0 | 1676 { |
| 1677 if (arg) | |
| 1678 { | |
| 1679 if (i) | |
| 1680 buf.writeByte(','); | |
| 1681 expToCBuffer(buf, hgs, arg, PREC.PREC_assign); | |
| 1682 } | |
| 1683 } | |
| 1684 } | |
|
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diff
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|
1685 } |
| 53 | 1686 |
| 1687 ulong getMask(ulong v) | |
| 1688 { | |
| 1689 ulong u = 0; | |
| 1690 if (v >= 0x80) | |
| 1691 u = 0xFF; | |
| 1692 while (u < v) | |
| 1693 u = (u << 1) | 1; | |
| 1694 return u; | |
| 64 | 1695 } |
| 1696 | |
| 1697 /****************************** | |
| 1698 * Perform scanForNestedRef() on an array of Expressions. | |
| 1699 */ | |
| 1700 | |
| 1701 void arrayExpressionScanForNestedRef(Scope sc, Expressions a) | |
| 1702 { | |
| 1703 //printf("arrayExpressionScanForNestedRef(%p)\n", a); | |
| 1704 if (a) | |
| 1705 { | |
|
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|
1706 foreach (e; a) |
| 64 | 1707 { |
| 1708 if (e) | |
| 1709 { | |
| 1710 e.scanForNestedRef(sc); | |
| 1711 } | |
| 1712 } | |
| 1713 } | |
| 129 | 1714 } |
| 1715 | |
| 1716 void realToMangleBuffer(OutBuffer buf, real value) | |
| 1717 { | |
| 1718 /* Rely on %A to get portable mangling. | |
| 1719 * Must munge result to get only identifier characters. | |
| 1720 * | |
| 1721 * Possible values from %A => mangled result | |
| 1722 * NAN => NAN | |
| 1723 * -INF => NINF | |
| 1724 * INF => INF | |
| 1725 * -0X1.1BC18BA997B95P+79 => N11BC18BA997B95P79 | |
| 1726 * 0X1.9P+2 => 19P2 | |
| 1727 */ | |
| 1728 | |
| 1729 if (isnan(value)) | |
| 1730 buf.writestring("NAN"); // no -NAN bugs | |
| 1731 else | |
| 1732 { | |
| 1733 char buffer[32]; | |
| 1734 int n = sprintf(buffer.ptr, "%LA", value); | |
| 1735 assert(n > 0 && n < buffer.sizeof); | |
| 1736 for (int i = 0; i < n; i++) | |
| 1737 { char c = buffer[i]; | |
| 1738 | |
| 1739 switch (c) | |
| 1740 { | |
| 1741 case '-': | |
| 1742 buf.writeByte('N'); | |
| 1743 break; | |
| 1744 | |
| 1745 case '+': | |
| 1746 case 'X': | |
| 1747 case '.': | |
| 1748 break; | |
| 1749 | |
| 1750 case '0': | |
| 1751 if (i < 2) | |
| 1752 break; // skip leading 0X | |
| 1753 default: | |
| 1754 buf.writeByte(c); | |
| 1755 break; | |
| 1756 } | |
| 1757 } | |
| 1758 } | |
| 1759 } | |
| 1760 | |
| 1761 /******************************** | |
| 1762 * Test to see if two reals are the same. | |
| 1763 * Regard NaN's as equivalent. | |
| 1764 * Regard +0 and -0 as different. | |
| 1765 */ | |
| 1766 | |
| 1767 int RealEquals(real x1, real x2) | |
| 1768 { | |
| 1769 return (isnan(x1) && isnan(x2)) || | |
| 1770 /* In some cases, the REALPAD bytes get garbage in them, | |
| 1771 * so be sure and ignore them. | |
| 1772 */ | |
| 1773 memcmp(&x1, &x2, REALSIZE - REALPAD) == 0; | |
|
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1774 } |
|
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1775 |
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1776 void floatToBuffer(OutBuffer buf, Type type, real value) |
|
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1777 { |
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1778 /* In order to get an exact representation, try converting it |
|
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1779 * to decimal then back again. If it matches, use it. |
|
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1780 * If it doesn't, fall back to hex, which is |
|
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1781 * always exact. |
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1782 */ |
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1783 char[25] buffer; |
|
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1784 sprintf(buffer.ptr, "%Lg", value); |
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1785 assert(strlen(buffer.ptr) < buffer.length); |
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1786 //#ifdef _WIN32 && __DMC__ |
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1787 // char *save = __locale_decpoint; |
|
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1788 // __locale_decpoint = "."; |
|
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1789 // real_t r = strtold(buffer, NULL); |
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1790 // __locale_decpoint = save; |
|
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1791 //#else |
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1792 real r = strtold(buffer.ptr, null); |
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1793 //#endif |
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1794 if (r == value) // if exact duplication |
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1795 buf.writestring(buffer); |
|
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1796 else |
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1797 buf.printf("%La", value); // ensure exact duplication |
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1798 |
|
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1799 if (type) |
|
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1800 { |
|
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1801 Type t = type.toBasetype(); |
|
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1802 switch (t.ty) |
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1803 { |
|
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1804 case Tfloat32: |
|
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1805 case Timaginary32: |
|
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1806 case Tcomplex32: |
|
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1807 buf.writeByte('F'); |
|
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1808 break; |
|
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1809 |
|
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1810 case Tfloat80: |
|
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1811 case Timaginary80: |
|
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1812 case Tcomplex80: |
|
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1813 buf.writeByte('L'); |
|
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1814 break; |
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1815 |
|
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1816 default: |
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1817 break; |
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1818 } |
|
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1819 if (t.isimaginary()) |
|
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1820 buf.writeByte('i'); |
|
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1821 } |
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1822 } |