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| 1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file | |
| 2 // for details. All rights reserved. Use of this source code is governed by a | |
| 3 // BSD-style license that can be found in the LICENSE file. | |
| 4 | |
| 5 library resolution.compute_members; | |
| 6 | |
| 7 import '../elements/elements.dart' | |
| 8 show Element, | |
| 9 Name, | |
| 10 PublicName, | |
| 11 Member, | |
| 12 MemberSignature, | |
| 13 LibraryElement, | |
| 14 ClassElement, | |
| 15 MixinApplicationElement; | |
| 16 import '../dart_types.dart'; | |
| 17 import '../dart2jslib.dart' | |
| 18 show Compiler, | |
| 19 MessageKind, | |
| 20 invariant, | |
| 21 isPrivateName; | |
| 22 import '../helpers/helpers.dart'; // Included for debug helpers. | |
| 23 import '../util/util.dart'; | |
| 24 | |
| 25 part 'member_impl.dart'; | |
| 26 | |
| 27 abstract class MembersCreator { | |
| 28 final ClassElement cls; | |
| 29 final Compiler compiler; | |
| 30 | |
| 31 final Iterable<String> computedMemberNames; | |
| 32 final Map<Name, Member> classMembers; | |
| 33 | |
| 34 Map<dynamic/* Member | Element */, Set<MessageKind>> reportedMessages = | |
| 35 new Map<dynamic, Set<MessageKind>>(); | |
| 36 | |
| 37 MembersCreator(Compiler this.compiler, | |
| 38 ClassElement this.cls, | |
| 39 Iterable<String> this.computedMemberNames, | |
| 40 Map<Name, Member> this.classMembers) { | |
| 41 assert(invariant(cls, cls.isDeclaration, | |
| 42 message: "Members may only be computed on declarations.")); | |
| 43 } | |
| 44 | |
| 45 void reportMessage(var marker, MessageKind kind, report()) { | |
| 46 Set<MessageKind> messages = | |
| 47 reportedMessages.putIfAbsent(marker, | |
| 48 () => new Set<MessageKind>()); | |
| 49 if (messages.add(kind)) { | |
| 50 report(); | |
| 51 } | |
| 52 } | |
| 53 | |
| 54 bool shouldSkipMember(MemberSignature member) { | |
| 55 return member == null || shouldSkipName(member.name.text); | |
| 56 | |
| 57 } | |
| 58 | |
| 59 bool shouldSkipName(String name) { | |
| 60 return computedMemberNames != null && | |
| 61 computedMemberNames.contains(name); | |
| 62 } | |
| 63 | |
| 64 /// Compute all members of [cls] with the given names. | |
| 65 void computeMembersByName(String name, Setlet<Name> names) { | |
| 66 computeMembers(name, names); | |
| 67 } | |
| 68 | |
| 69 /// Compute all members of [cls] and checked that [cls] implements its | |
| 70 /// interface unless it is abstract or declares a `noSuchMethod` method. | |
| 71 void computeAllMembers() { | |
| 72 Map<Name, Member> declaredMembers = computeMembers(null, null); | |
| 73 if (!cls.isAbstract && | |
| 74 !declaredMembers.containsKey(const PublicName('noSuchMethod'))) { | |
| 75 // Check for unimplemented members on concrete classes that neither have | |
| 76 // a `@proxy` annotation nor declare a `noSuchMethod` method. | |
| 77 checkInterfaceImplementation(); | |
| 78 } | |
| 79 } | |
| 80 | |
| 81 /// Compute declared and inherited members of [cls] and return a map of the | |
| 82 /// declared members. | |
| 83 /// | |
| 84 /// If [name] and [names] are not null, the computation is restricted to | |
| 85 /// members with these names. | |
| 86 Map<Name, Member> computeMembers(String name, Setlet<Name> names); | |
| 87 | |
| 88 /// Compute the members of the super type(s) of [cls] and store them in | |
| 89 /// [classMembers]. | |
| 90 /// | |
| 91 /// If [name] and [names] are not null, the computation is restricted to | |
| 92 /// members with these names. | |
| 93 void computeSuperMembers(String name, Setlet<Name> names); | |
| 94 | |
| 95 /// Compute the members of the super class of [cls] and store them in | |
| 96 /// [classMembers]. | |
| 97 /// | |
| 98 /// If [name] and [names] are not null, the computation is restricted to | |
| 99 /// members with these names. | |
| 100 void computeSuperClassMembers(String name, Setlet<Name> names) { | |
| 101 InterfaceType supertype = cls.supertype; | |
| 102 if (supertype == null) return; | |
| 103 ClassElement superclass = supertype.element; | |
| 104 | |
| 105 // Inherit class and interface members from superclass. | |
| 106 void inheritClassMember(DeclaredMember member) { | |
| 107 if (shouldSkipMember(member)) return; | |
| 108 if (!member.isStatic) { | |
| 109 DeclaredMember inherited = member.inheritFrom(supertype); | |
| 110 classMembers[member.name] = inherited; | |
| 111 } | |
| 112 } | |
| 113 | |
| 114 if (names != null) { | |
| 115 _computeClassMember(compiler, superclass, name, names); | |
| 116 for (Name memberName in names) { | |
| 117 inheritClassMember(superclass.lookupClassMember(memberName)); | |
| 118 } | |
| 119 } else { | |
| 120 computeAllClassMembers(compiler, superclass); | |
| 121 superclass.forEachClassMember(inheritClassMember); | |
| 122 } | |
| 123 } | |
| 124 | |
| 125 /// Compute the members declared or directly mixed in [cls]. | |
| 126 /// | |
| 127 /// If [name] and [names] are not null, the computation is restricted to | |
| 128 /// members with these names. | |
| 129 Map<Name, Member> computeClassMembers(String nameText, Setlet<Name> names) { | |
| 130 Map<Name, Member> declaredMembers = new Map<Name, Member>(); | |
| 131 | |
| 132 if (cls.isMixinApplication) { | |
| 133 MixinApplicationElement mixinApplication = cls; | |
| 134 if (mixinApplication.mixin != null) { | |
| 135 // Only mix in class members when the mixin type is not malformed. | |
| 136 | |
| 137 void inheritMixinMember(DeclaredMember member) { | |
| 138 if (shouldSkipMember(member)) return; | |
| 139 Name name = member.name; | |
| 140 if (!member.isAbstract && !member.isStatic) { | |
| 141 // Abstract and static members are not mixed in. | |
| 142 DeclaredMember mixedInMember = | |
| 143 member.inheritFrom(mixinApplication.mixinType); | |
| 144 DeclaredMember inherited = classMembers[name]; | |
| 145 classMembers[name] = mixedInMember; | |
| 146 checkValidOverride(mixedInMember, inherited); | |
| 147 } | |
| 148 } | |
| 149 | |
| 150 if (names != null) { | |
| 151 _computeClassMember(compiler, mixinApplication.mixin, | |
| 152 nameText, names); | |
| 153 for (Name memberName in names) { | |
| 154 inheritMixinMember( | |
| 155 mixinApplication.mixin.lookupClassMember(memberName)); | |
| 156 } | |
| 157 } else { | |
| 158 computeAllClassMembers(compiler, mixinApplication.mixin); | |
| 159 mixinApplication.mixin.forEachClassMember(inheritMixinMember); | |
| 160 } | |
| 161 } | |
| 162 } else { | |
| 163 LibraryElement library = cls.library; | |
| 164 InterfaceType thisType = cls.thisType; | |
| 165 | |
| 166 void createMember(Element element) { | |
| 167 if (element.isConstructor) return; | |
| 168 String elementName = element.name; | |
| 169 if (shouldSkipName(elementName)) return; | |
| 170 if (nameText != null && elementName != nameText) return; | |
| 171 | |
| 172 void addDeclaredMember(Name name, | |
| 173 DartType type, FunctionType functionType) { | |
| 174 DeclaredMember inherited = classMembers[name]; | |
| 175 DeclaredMember declared; | |
| 176 if (element.isAbstract) { | |
| 177 declared = new DeclaredAbstractMember( | |
| 178 name, element, thisType, type, functionType, | |
| 179 inherited); | |
| 180 } else { | |
| 181 declared = | |
| 182 new DeclaredMember(name, element, thisType, type, functionType); | |
| 183 } | |
| 184 declaredMembers[name] = declared; | |
| 185 classMembers[name] = declared; | |
| 186 checkValidOverride(declared, inherited); | |
| 187 } | |
| 188 | |
| 189 Name name = new Name(element.name, library); | |
| 190 if (element.isField) { | |
| 191 DartType type = element.computeType(compiler); | |
| 192 addDeclaredMember(name, type, new FunctionType.synthesized(type)); | |
| 193 if (!element.isConst && !element.isFinal) { | |
| 194 addDeclaredMember(name.setter, type, | |
| 195 new FunctionType.synthesized( | |
| 196 const VoidType(), | |
| 197 <DartType>[type])); | |
| 198 } | |
| 199 } else if (element.isGetter) { | |
| 200 FunctionType functionType = element.computeType(compiler); | |
| 201 DartType type = functionType.returnType; | |
| 202 addDeclaredMember(name, type, functionType); | |
| 203 } else if (element.isSetter) { | |
| 204 FunctionType functionType = element.computeType(compiler); | |
| 205 DartType type; | |
| 206 if (!functionType.parameterTypes.isEmpty) { | |
| 207 type = functionType.parameterTypes.first; | |
| 208 } else { | |
| 209 type = const DynamicType(); | |
| 210 } | |
| 211 name = name.setter; | |
| 212 addDeclaredMember(name, type, functionType); | |
| 213 } else { | |
| 214 assert(invariant(element, element.isFunction)); | |
| 215 FunctionType type = element.computeType(compiler); | |
| 216 addDeclaredMember(name, type, type); | |
| 217 } | |
| 218 } | |
| 219 | |
| 220 cls.forEachLocalMember(createMember); | |
| 221 if (cls.isPatched) { | |
| 222 cls.implementation.forEachLocalMember((Element element) { | |
| 223 if (element.isDeclaration) { | |
| 224 createMember(element); | |
| 225 } | |
| 226 }); | |
| 227 } | |
| 228 } | |
| 229 | |
| 230 return declaredMembers; | |
| 231 } | |
| 232 | |
| 233 /// Checks that [classMember] is a valid implementation for [interfaceMember]. | |
| 234 void checkInterfaceMember(Name name, | |
| 235 MemberSignature interfaceMember, | |
| 236 Member classMember) { | |
| 237 if (classMember != null) { | |
| 238 // TODO(johnniwinther): Check that the class member is a valid override | |
| 239 // of the interface member. | |
| 240 return; | |
| 241 } | |
| 242 if (interfaceMember is DeclaredMember && | |
| 243 interfaceMember.declarer.element == cls) { | |
| 244 // Abstract method declared in [cls]. | |
| 245 MessageKind kind = MessageKind.ABSTRACT_METHOD; | |
| 246 if (interfaceMember.isSetter) { | |
| 247 kind = MessageKind.ABSTRACT_SETTER; | |
| 248 } else if (interfaceMember.isGetter) { | |
| 249 kind = MessageKind.ABSTRACT_GETTER; | |
| 250 } | |
| 251 reportMessage( | |
| 252 interfaceMember.element, MessageKind.ABSTRACT_METHOD, () { | |
| 253 compiler.reportWarning( | |
| 254 interfaceMember.element, kind, | |
| 255 {'class': cls.name, 'name': name.text}); | |
| 256 }); | |
| 257 } else { | |
| 258 reportWarning(MessageKind singleKind, | |
| 259 MessageKind multipleKind, | |
| 260 MessageKind explicitlyDeclaredKind, | |
| 261 [MessageKind implicitlyDeclaredKind]) { | |
| 262 Member inherited = interfaceMember.declarations.first; | |
| 263 reportMessage( | |
| 264 interfaceMember, MessageKind.UNIMPLEMENTED_METHOD, () { | |
| 265 compiler.reportWarning(cls, | |
| 266 interfaceMember.declarations.length == 1 | |
| 267 ? singleKind : multipleKind, | |
| 268 {'class': cls.name, | |
| 269 'name': name.text, | |
| 270 'method': interfaceMember, | |
| 271 'declarer': inherited.declarer}); | |
| 272 for (Member inherited in interfaceMember.declarations) { | |
| 273 compiler.reportInfo(inherited.element, | |
| 274 inherited.isDeclaredByField ? | |
| 275 implicitlyDeclaredKind : explicitlyDeclaredKind, | |
| 276 {'class': inherited.declarer.name, | |
| 277 'name': name.text}); | |
| 278 } | |
| 279 }); | |
| 280 } | |
| 281 if (interfaceMember.isSetter) { | |
| 282 reportWarning(MessageKind.UNIMPLEMENTED_SETTER_ONE, | |
| 283 MessageKind.UNIMPLEMENTED_SETTER, | |
| 284 MessageKind.UNIMPLEMENTED_EXPLICIT_SETTER, | |
| 285 MessageKind.UNIMPLEMENTED_IMPLICIT_SETTER); | |
| 286 } else if (interfaceMember.isGetter) { | |
| 287 reportWarning(MessageKind.UNIMPLEMENTED_GETTER_ONE, | |
| 288 MessageKind.UNIMPLEMENTED_GETTER, | |
| 289 MessageKind.UNIMPLEMENTED_EXPLICIT_GETTER, | |
| 290 MessageKind.UNIMPLEMENTED_IMPLICIT_GETTER); | |
| 291 } else if (interfaceMember.isMethod) { | |
| 292 reportWarning(MessageKind.UNIMPLEMENTED_METHOD_ONE, | |
| 293 MessageKind.UNIMPLEMENTED_METHOD, | |
| 294 MessageKind.UNIMPLEMENTED_METHOD_CONT); | |
| 295 } | |
| 296 } | |
| 297 // TODO(johnniwinther): If [cls] is not abstract, check that for all | |
| 298 // interface members, there is a class member whose type is a subtype of | |
| 299 // the interface member. | |
| 300 } | |
| 301 | |
| 302 /// Checks that [cls], if it implements Function, has defined call(). | |
| 303 void checkImplementsFunctionWithCall() { | |
| 304 assert(!cls.isAbstract); | |
| 305 | |
| 306 if (cls.asInstanceOf(compiler.functionClass) == null) return; | |
| 307 if (cls.lookupMember(Compiler.CALL_OPERATOR_NAME) != null) return; | |
| 308 // TODO(johnniwinther): Make separate methods for backend exceptions. | |
| 309 // Avoid warnings on backend implementation classes for closures. | |
| 310 if (compiler.backend.isBackendLibrary(cls.library)) return; | |
| 311 | |
| 312 reportMessage(compiler.functionClass, MessageKind.UNIMPLEMENTED_METHOD, () { | |
| 313 compiler.reportWarning(cls, MessageKind.UNIMPLEMENTED_METHOD_ONE, | |
| 314 {'class': cls.name, | |
| 315 'name': Compiler.CALL_OPERATOR_NAME, | |
| 316 'method': Compiler.CALL_OPERATOR_NAME, | |
| 317 'declarer': compiler.functionClass.name}); | |
| 318 }); | |
| 319 } | |
| 320 | |
| 321 /// Checks that a class member exists for every interface member. | |
| 322 void checkInterfaceImplementation(); | |
| 323 | |
| 324 /// Check that [declared] is a valid override of [superMember]. | |
| 325 void checkValidOverride(Member declared, MemberSignature superMember) { | |
| 326 if (superMember == null) { | |
| 327 // No override. | |
| 328 if (!declared.isStatic) { | |
| 329 ClassElement superclass = cls.superclass; | |
| 330 while (superclass != null) { | |
| 331 Member superMember = | |
| 332 superclass.lookupClassMember(declared.name); | |
| 333 if (superMember != null && superMember.isStatic) { | |
| 334 reportMessage(superMember, MessageKind.INSTANCE_STATIC_SAME_NAME, | |
| 335 () { | |
| 336 compiler.reportWarning( | |
| 337 declared.element, | |
| 338 MessageKind.INSTANCE_STATIC_SAME_NAME, | |
| 339 {'memberName': declared.name, | |
| 340 'className': superclass.name}); | |
| 341 compiler.reportInfo(superMember.element, | |
| 342 MessageKind.INSTANCE_STATIC_SAME_NAME_CONT); | |
| 343 }); | |
| 344 break; | |
| 345 } | |
| 346 superclass = superclass.superclass; | |
| 347 } | |
| 348 } | |
| 349 } else { | |
| 350 assert(declared.name == superMember.name); | |
| 351 if (declared.isStatic) { | |
| 352 for (Member inherited in superMember.declarations) { | |
| 353 reportMessage( | |
| 354 inherited.element, MessageKind.NO_STATIC_OVERRIDE, () { | |
| 355 reportErrorWithContext( | |
| 356 declared.element, MessageKind.NO_STATIC_OVERRIDE, | |
| 357 inherited.element, MessageKind.NO_STATIC_OVERRIDE_CONT); | |
| 358 }); | |
| 359 } | |
| 360 } | |
| 361 | |
| 362 DartType declaredType = declared.functionType; | |
| 363 for (Member inherited in superMember.declarations) { | |
| 364 | |
| 365 void reportError(MessageKind errorKind, MessageKind infoKind) { | |
| 366 reportMessage( | |
| 367 inherited.element, MessageKind.INVALID_OVERRIDE_METHOD, () { | |
| 368 compiler.reportError(declared.element, errorKind, | |
| 369 {'name': declared.name.text, | |
| 370 'class': cls.thisType, | |
| 371 'inheritedClass': inherited.declarer}); | |
| 372 compiler.reportInfo(inherited.element, infoKind, | |
| 373 {'name': declared.name.text, | |
| 374 'class': inherited.declarer}); | |
| 375 }); | |
| 376 } | |
| 377 | |
| 378 if (declared.isDeclaredByField && inherited.isMethod) { | |
| 379 reportError(MessageKind.CANNOT_OVERRIDE_METHOD_WITH_FIELD, | |
| 380 MessageKind.CANNOT_OVERRIDE_METHOD_WITH_FIELD_CONT); | |
| 381 } else if (declared.isMethod && inherited.isDeclaredByField) { | |
| 382 reportError(MessageKind.CANNOT_OVERRIDE_FIELD_WITH_METHOD, | |
| 383 MessageKind.CANNOT_OVERRIDE_FIELD_WITH_METHOD_CONT); | |
| 384 } else if (declared.isGetter && inherited.isMethod) { | |
| 385 reportError(MessageKind.CANNOT_OVERRIDE_METHOD_WITH_GETTER, | |
| 386 MessageKind.CANNOT_OVERRIDE_METHOD_WITH_GETTER_CONT); | |
| 387 } else if (declared.isMethod && inherited.isGetter) { | |
| 388 reportError(MessageKind.CANNOT_OVERRIDE_GETTER_WITH_METHOD, | |
| 389 MessageKind.CANNOT_OVERRIDE_GETTER_WITH_METHOD_CONT); | |
| 390 } else { | |
| 391 DartType inheritedType = inherited.functionType; | |
| 392 if (!compiler.types.isSubtype(declaredType, inheritedType)) { | |
| 393 void reportWarning(var marker, | |
| 394 MessageKind warningKind, | |
| 395 MessageKind infoKind) { | |
| 396 reportMessage(marker, MessageKind.INVALID_OVERRIDE_METHOD, () { | |
| 397 compiler.reportWarning(declared.element, warningKind, | |
| 398 {'declaredType': declared.type, | |
| 399 'name': declared.name.text, | |
| 400 'class': cls.thisType, | |
| 401 'inheritedType': inherited.type, | |
| 402 'inheritedClass': inherited.declarer}); | |
| 403 compiler.reportInfo(inherited.element, infoKind, | |
| 404 {'name': declared.name.text, | |
| 405 'class': inherited.declarer}); | |
| 406 }); | |
| 407 } | |
| 408 if (declared.isDeclaredByField) { | |
| 409 if (inherited.isDeclaredByField) { | |
| 410 reportWarning(inherited.element, | |
| 411 MessageKind.INVALID_OVERRIDE_FIELD, | |
| 412 MessageKind.INVALID_OVERRIDDEN_FIELD); | |
| 413 } else if (inherited.isGetter) { | |
| 414 reportWarning(inherited, | |
| 415 MessageKind.INVALID_OVERRIDE_GETTER_WITH_FIELD, | |
| 416 MessageKind.INVALID_OVERRIDDEN_GETTER); | |
| 417 } else if (inherited.isSetter) { | |
| 418 reportWarning(inherited, | |
| 419 MessageKind.INVALID_OVERRIDE_SETTER_WITH_FIELD, | |
| 420 MessageKind.INVALID_OVERRIDDEN_SETTER); | |
| 421 } | |
| 422 } else if (declared.isGetter) { | |
| 423 if (inherited.isDeclaredByField) { | |
| 424 reportWarning(inherited, | |
| 425 MessageKind.INVALID_OVERRIDE_FIELD_WITH_GETTER, | |
| 426 MessageKind.INVALID_OVERRIDDEN_FIELD); | |
| 427 } else { | |
| 428 reportWarning(inherited, | |
| 429 MessageKind.INVALID_OVERRIDE_GETTER, | |
| 430 MessageKind.INVALID_OVERRIDDEN_GETTER); | |
| 431 } | |
| 432 } else if (declared.isSetter) { | |
| 433 if (inherited.isDeclaredByField) { | |
| 434 reportWarning(inherited, | |
| 435 MessageKind.INVALID_OVERRIDE_FIELD_WITH_SETTER, | |
| 436 MessageKind.INVALID_OVERRIDDEN_FIELD); | |
| 437 } else { | |
| 438 reportWarning(inherited, | |
| 439 MessageKind.INVALID_OVERRIDE_SETTER, | |
| 440 MessageKind.INVALID_OVERRIDDEN_SETTER); | |
| 441 } | |
| 442 } else { | |
| 443 reportWarning(inherited, | |
| 444 MessageKind.INVALID_OVERRIDE_METHOD, | |
| 445 MessageKind.INVALID_OVERRIDDEN_METHOD); | |
| 446 } | |
| 447 } | |
| 448 } | |
| 449 } | |
| 450 } | |
| 451 } | |
| 452 | |
| 453 void reportErrorWithContext(Element errorneousElement, | |
| 454 MessageKind errorMessage, | |
| 455 Element contextElement, | |
| 456 MessageKind contextMessage) { | |
| 457 compiler.reportError( | |
| 458 errorneousElement, | |
| 459 errorMessage, | |
| 460 {'memberName': contextElement.name, | |
| 461 'className': contextElement.enclosingClass.name}); | |
| 462 compiler.reportInfo(contextElement, contextMessage); | |
| 463 } | |
| 464 | |
| 465 /// Compute all class and interface names by the [name] in [cls]. | |
| 466 static void computeClassMembersByName(Compiler compiler, | |
| 467 ClassMemberMixin cls, | |
| 468 String name) { | |
| 469 if (cls.isMemberComputed(name)) return; | |
| 470 LibraryElement library = cls.library; | |
| 471 _computeClassMember(compiler, cls, name, | |
| 472 new Setlet<Name>()..add(new Name(name, library)) | |
| 473 ..add(new Name(name, library, isSetter: true))); | |
| 474 } | |
| 475 | |
| 476 static void _computeClassMember(Compiler compiler, | |
| 477 ClassMemberMixin cls, | |
| 478 String name, | |
| 479 Setlet<Name> names) { | |
| 480 cls.computeClassMember(compiler, name, names); | |
| 481 } | |
| 482 | |
| 483 /// Compute all class and interface names in [cls]. | |
| 484 static void computeAllClassMembers(Compiler compiler, ClassMemberMixin cls) { | |
| 485 cls.computeAllClassMembers(compiler); | |
| 486 } | |
| 487 } | |
| 488 | |
| 489 /// Class member creator for classes where the interface members are known to | |
| 490 /// be a subset of the class members. | |
| 491 class ClassMembersCreator extends MembersCreator { | |
| 492 ClassMembersCreator(Compiler compiler, | |
| 493 ClassElement cls, | |
| 494 Iterable<String> computedMemberNames, | |
| 495 Map<Name, Member> classMembers) | |
| 496 : super(compiler, cls, computedMemberNames, classMembers); | |
| 497 | |
| 498 Map<Name, Member> computeMembers(String name, Setlet<Name> names) { | |
| 499 computeSuperMembers(name, names); | |
| 500 return computeClassMembers(name, names); | |
| 501 } | |
| 502 | |
| 503 void computeSuperMembers(String name, Setlet<Name> names) { | |
| 504 computeSuperClassMembers(name, names); | |
| 505 } | |
| 506 | |
| 507 void checkInterfaceImplementation() { | |
| 508 LibraryElement library = cls.library; | |
| 509 classMembers.forEach((Name name, Member classMember) { | |
| 510 if (!name.isAccessibleFrom(library)) return; | |
| 511 checkInterfaceMember(name, classMember, classMember.implementation); | |
| 512 }); | |
| 513 } | |
| 514 } | |
| 515 | |
| 516 /// Class Member creator for classes where the interface members might be | |
| 517 /// different from the class members. | |
| 518 class InterfaceMembersCreator extends MembersCreator { | |
| 519 final Map<Name, MemberSignature> interfaceMembers; | |
| 520 | |
| 521 InterfaceMembersCreator(Compiler compiler, | |
| 522 ClassElement cls, | |
| 523 Iterable<String> computedMemberNames, | |
| 524 Map<Name, Member> classMembers, | |
| 525 Map<Name, MemberSignature> this.interfaceMembers) | |
| 526 : super(compiler, cls, computedMemberNames, classMembers); | |
| 527 | |
| 528 Map<Name, Member> computeMembers(String name, Setlet<Name> names) { | |
| 529 Map<Name, Setlet<Member>> inheritedInterfaceMembers = | |
| 530 computeSuperMembers(name, names); | |
| 531 Map<Name, Member> declaredMembers = computeClassMembers(name, names); | |
| 532 computeInterfaceMembers(inheritedInterfaceMembers, declaredMembers); | |
| 533 return declaredMembers; | |
| 534 } | |
| 535 | |
| 536 /// Compute the members of the super type(s) of [cls]. The class members are | |
| 537 /// stored if the [classMembers] map and the inherited interface members are | |
| 538 /// returned. | |
| 539 /// | |
| 540 /// If [name] and [names] are not null, the computation is restricted to | |
| 541 /// members with these names. | |
| 542 Map<Name, Setlet<Member>> computeSuperMembers(String name, | |
| 543 Setlet<Name> names) { | |
| 544 computeSuperClassMembers(name, names); | |
| 545 return computeSuperInterfaceMembers(name, names); | |
| 546 } | |
| 547 | |
| 548 Map<Name, Setlet<Member>> computeSuperInterfaceMembers(String name, | |
| 549 Setlet<Name> names) { | |
| 550 | |
| 551 | |
| 552 InterfaceType supertype = cls.supertype; | |
| 553 assert(invariant(cls, supertype != null, | |
| 554 message: "Interface members computed for $cls.")); | |
| 555 ClassElement superclass = supertype.element; | |
| 556 | |
| 557 Map<Name, Setlet<Member>> inheritedInterfaceMembers = | |
| 558 new Map<Name, Setlet<Member>>(); | |
| 559 | |
| 560 void inheritInterfaceMember(InterfaceType supertype, | |
| 561 MemberSignature member) { | |
| 562 if (shouldSkipMember(member)) return; | |
| 563 Setlet<Member> members = | |
| 564 inheritedInterfaceMembers.putIfAbsent( | |
| 565 member.name, () => new Setlet<Member>()); | |
| 566 for (DeclaredMember declaredMember in member.declarations) { | |
| 567 members.add(declaredMember.inheritFrom(supertype)); | |
| 568 } | |
| 569 } | |
| 570 | |
| 571 void inheritInterfaceMembers(InterfaceType supertype) { | |
| 572 supertype.element.forEachInterfaceMember((MemberSignature member) { | |
| 573 inheritInterfaceMember(supertype, member); | |
| 574 }); | |
| 575 } | |
| 576 | |
| 577 if (names != null) { | |
| 578 for (Name memberName in names) { | |
| 579 inheritInterfaceMember(supertype, | |
| 580 superclass.lookupInterfaceMember(memberName)); | |
| 581 } | |
| 582 } else { | |
| 583 inheritInterfaceMembers(supertype); | |
| 584 } | |
| 585 | |
| 586 // Inherit interface members from superinterfaces. | |
| 587 for (Link<DartType> link = cls.interfaces; | |
| 588 !link.isEmpty; | |
| 589 link = link.tail) { | |
| 590 InterfaceType superinterface = link.head; | |
| 591 if (names != null) { | |
| 592 MembersCreator._computeClassMember( | |
| 593 compiler, superinterface.element, name, names); | |
| 594 for (Name memberName in names) { | |
| 595 inheritInterfaceMember(superinterface, | |
| 596 superinterface.element.lookupInterfaceMember(memberName)); | |
| 597 } | |
| 598 } else { | |
| 599 MembersCreator.computeAllClassMembers(compiler, superinterface.element); | |
| 600 inheritInterfaceMembers(superinterface); | |
| 601 } | |
| 602 } | |
| 603 | |
| 604 return inheritedInterfaceMembers; | |
| 605 } | |
| 606 | |
| 607 /// Checks that a class member exists for every interface member. | |
| 608 void checkInterfaceImplementation() { | |
| 609 LibraryElement library = cls.library; | |
| 610 checkImplementsFunctionWithCall(); | |
| 611 interfaceMembers.forEach((Name name, MemberSignature interfaceMember) { | |
| 612 if (!name.isAccessibleFrom(library)) return; | |
| 613 Member classMember = classMembers[name]; | |
| 614 if (classMember != null) classMember = classMember.implementation; | |
| 615 checkInterfaceMember(name, interfaceMember, classMember); | |
| 616 }); | |
| 617 } | |
| 618 | |
| 619 /// Compute the interface members of [cls] given the set of inherited | |
| 620 /// interface members [inheritedInterfaceMembers] and declared members | |
| 621 /// [declaredMembers]. The computed members are stored in [interfaceMembers]. | |
| 622 void computeInterfaceMembers( | |
| 623 Map<Name, Setlet<Member>> inheritedInterfaceMembers, | |
| 624 Map<Name, Member> declaredMembers) { | |
| 625 InterfaceType thisType = cls.thisType; | |
| 626 // Compute the interface members by overriding the inherited members with | |
| 627 // a declared member or by computing a single, possibly synthesized, | |
| 628 // inherited member. | |
| 629 inheritedInterfaceMembers.forEach( | |
| 630 (Name name, Setlet<Member> inheritedMembers) { | |
| 631 Member declared = declaredMembers[name]; | |
| 632 if (declared != null) { | |
| 633 // Check that [declaredMember] is a valid override | |
| 634 for (Member inherited in inheritedMembers) { | |
| 635 checkValidOverride(declared, inherited); | |
| 636 } | |
| 637 if (!declared.isStatic) { | |
| 638 interfaceMembers[name] = declared; | |
| 639 } | |
| 640 } else if (inheritedMembers.length == 1) { | |
| 641 interfaceMembers[name] = inheritedMembers.single; | |
| 642 } else { | |
| 643 bool someAreGetters = false; | |
| 644 bool allAreGetters = true; | |
| 645 Map<DartType, Setlet<Member>> subtypesOfAllInherited = | |
| 646 new Map<DartType, Setlet<Member>>(); | |
| 647 outer: for (Member inherited in inheritedMembers) { | |
| 648 if (inherited.isGetter) { | |
| 649 someAreGetters = true; | |
| 650 if (!allAreGetters) break outer; | |
| 651 } else { | |
| 652 allAreGetters = false; | |
| 653 if (someAreGetters) break outer; | |
| 654 } | |
| 655 for (MemberSignature other in inheritedMembers) { | |
| 656 if (!compiler.types.isSubtype(inherited.functionType, | |
| 657 other.functionType)) { | |
| 658 continue outer; | |
| 659 } | |
| 660 } | |
| 661 subtypesOfAllInherited.putIfAbsent(inherited.functionType, | |
| 662 () => new Setlet<Member>()).add(inherited); | |
| 663 } | |
| 664 if (someAreGetters && !allAreGetters) { | |
| 665 compiler.reportWarning(cls, | |
| 666 MessageKind.INHERIT_GETTER_AND_METHOD, | |
| 667 {'class': thisType, 'name': name.text }); | |
| 668 for (Member inherited in inheritedMembers) { | |
| 669 MessageKind kind; | |
| 670 if (inherited.isMethod) { | |
| 671 kind = MessageKind.INHERITED_METHOD; | |
| 672 } else { | |
| 673 assert(invariant(cls, inherited.isGetter, | |
| 674 message: 'Conflicting member is neither a method nor a ' | |
| 675 'getter.')); | |
| 676 if (inherited.isDeclaredByField) { | |
| 677 kind = MessageKind.INHERITED_IMPLICIT_GETTER; | |
| 678 } else { | |
| 679 kind = MessageKind.INHERITED_EXPLICIT_GETTER; | |
| 680 } | |
| 681 } | |
| 682 compiler.reportInfo(inherited.element, kind, | |
| 683 {'class': inherited.declarer, 'name': name.text }); | |
| 684 } | |
| 685 interfaceMembers[name] = new ErroneousMember(inheritedMembers); | |
| 686 } else if (subtypesOfAllInherited.length == 1) { | |
| 687 // All signatures have the same type. | |
| 688 Setlet<Member> members = subtypesOfAllInherited.values.first; | |
| 689 MemberSignature inherited = members.first; | |
| 690 if (members.length != 1) { | |
| 691 // Multiple signatures with the same type => return a | |
| 692 // synthesized signature. | |
| 693 inherited = new SyntheticMember( | |
| 694 members, inherited.type, inherited.functionType); | |
| 695 } | |
| 696 interfaceMembers[name] = inherited; | |
| 697 } else { | |
| 698 _inheritedSynthesizedMember(name, inheritedMembers); | |
| 699 } | |
| 700 } | |
| 701 }); | |
| 702 | |
| 703 // Add the non-overriding instance methods to the interface members. | |
| 704 declaredMembers.forEach((Name name, Member member) { | |
| 705 if (!member.isStatic) { | |
| 706 interfaceMembers.putIfAbsent(name, () => member); | |
| 707 } | |
| 708 }); | |
| 709 } | |
| 710 | |
| 711 /// Create and inherit a synthesized member for [inheritedMembers]. | |
| 712 void _inheritedSynthesizedMember(Name name, | |
| 713 Setlet<Member> inheritedMembers) { | |
| 714 // Multiple signatures with different types => create the synthesized | |
| 715 // version. | |
| 716 int minRequiredParameters; | |
| 717 int maxPositionalParameters; | |
| 718 Set<String> names = new Set<String>(); | |
| 719 for (MemberSignature member in inheritedMembers) { | |
| 720 int requiredParameters = 0; | |
| 721 int optionalParameters = 0; | |
| 722 if (member.isSetter) { | |
| 723 requiredParameters = 1; | |
| 724 } | |
| 725 if (member.type.isFunctionType) { | |
| 726 FunctionType type = member.type; | |
| 727 type.namedParameters.forEach( | |
| 728 (String name) => names.add(name)); | |
| 729 requiredParameters = type.parameterTypes.length; | |
| 730 optionalParameters = type.optionalParameterTypes.length; | |
| 731 } | |
| 732 int positionalParameters = requiredParameters + optionalParameters; | |
| 733 if (minRequiredParameters == null || | |
| 734 minRequiredParameters > requiredParameters) { | |
| 735 minRequiredParameters = requiredParameters; | |
| 736 } | |
| 737 if (maxPositionalParameters == null || | |
| 738 maxPositionalParameters < positionalParameters) { | |
| 739 maxPositionalParameters = positionalParameters; | |
| 740 } | |
| 741 } | |
| 742 int optionalParameters = | |
| 743 maxPositionalParameters - minRequiredParameters; | |
| 744 // TODO(johnniwinther): Support function types with both optional | |
| 745 // and named parameters? | |
| 746 if (optionalParameters == 0 || names.isEmpty) { | |
| 747 DartType dynamic = const DynamicType(); | |
| 748 List<DartType> requiredParameterTypes = | |
| 749 new List.filled(minRequiredParameters, dynamic); | |
| 750 List<DartType> optionalParameterTypes = | |
| 751 new List.filled(optionalParameters, dynamic); | |
| 752 List<String> namedParameters = | |
| 753 names.toList()..sort((a, b) => a.compareTo(b)); | |
| 754 List<DartType> namedParameterTypes = | |
| 755 new List.filled(namedParameters.length, dynamic); | |
| 756 FunctionType memberType = new FunctionType.synthesized( | |
| 757 const DynamicType(), | |
| 758 requiredParameterTypes, | |
| 759 optionalParameterTypes, | |
| 760 namedParameters, namedParameterTypes); | |
| 761 DartType type = memberType; | |
| 762 if (inheritedMembers.first.isGetter || | |
| 763 inheritedMembers.first.isSetter) { | |
| 764 type = const DynamicType(); | |
| 765 } | |
| 766 interfaceMembers[name] = | |
| 767 new SyntheticMember(inheritedMembers, type, memberType); | |
| 768 } | |
| 769 } | |
| 770 } | |
| 771 | |
| 772 abstract class ClassMemberMixin implements ClassElement { | |
| 773 /// When [classMembers] and [interfaceMembers] have not been fully computed | |
| 774 /// [computedMembersNames] holds the names for which members have already been | |
| 775 /// computed. | |
| 776 /// | |
| 777 /// If [computedMemberNames], [classMembers] and [interfaceMembers] are `null` | |
| 778 /// no members have been computed, if only [computedMemberNames] is `null` all | |
| 779 /// members have been computed. A non-null [computedMemberNames] implicitly | |
| 780 /// includes `call`. | |
| 781 Iterable<String> computedMemberNames; | |
| 782 | |
| 783 /// If `true` interface members are the non-static class member. | |
| 784 bool interfaceMembersAreClassMembers = true; | |
| 785 | |
| 786 Map<Name, Member> classMembers; | |
| 787 Map<Name, MemberSignature> interfaceMembers; | |
| 788 | |
| 789 /// Creates the necessary maps and [MembersCreator] for compute members of | |
| 790 /// this class. | |
| 791 MembersCreator _prepareCreator(Compiler compiler) { | |
| 792 if (classMembers == null) { | |
| 793 classMembers = new Map<Name, Member>(); | |
| 794 | |
| 795 if (interfaceMembersAreClassMembers) { | |
| 796 ClassMemberMixin superclass = this.superclass; | |
| 797 if ((superclass != null && | |
| 798 (!superclass.interfaceMembersAreClassMembers || | |
| 799 superclass.isMixinApplication)) || | |
| 800 !interfaces.isEmpty) { | |
| 801 interfaceMembersAreClassMembers = false; | |
| 802 } | |
| 803 } | |
| 804 if (!interfaceMembersAreClassMembers) { | |
| 805 interfaceMembers = new Map<Name, MemberSignature>(); | |
| 806 } | |
| 807 } | |
| 808 return interfaceMembersAreClassMembers | |
| 809 ? new ClassMembersCreator(compiler, this, | |
| 810 computedMemberNames, classMembers) | |
| 811 : new InterfaceMembersCreator(compiler, this, | |
| 812 computedMemberNames, classMembers, interfaceMembers); | |
| 813 } | |
| 814 | |
| 815 static Iterable<String> _EMPTY_MEMBERS_NAMES = const <String>[]; | |
| 816 | |
| 817 /// Compute the members by the name [name] for this class. [names] collects | |
| 818 /// the set of possible variations of [name], including getter, setter and | |
| 819 /// and private names. | |
| 820 void computeClassMember(Compiler compiler, String name, Setlet<Name> names) { | |
| 821 if (isMemberComputed(name)) return; | |
| 822 if (isPrivateName(name)) { | |
| 823 names..add(new Name(name, library)) | |
| 824 ..add(new Name(name, library, isSetter: true)); | |
| 825 } | |
| 826 MembersCreator creator = _prepareCreator(compiler); | |
| 827 creator.computeMembersByName(name, names); | |
| 828 if (computedMemberNames == null) { | |
| 829 computedMemberNames = _EMPTY_MEMBERS_NAMES; | |
| 830 } | |
| 831 if (name != Compiler.CALL_OPERATOR_NAME) { | |
| 832 Setlet<String> set; | |
| 833 if (identical(computedMemberNames, _EMPTY_MEMBERS_NAMES)) { | |
| 834 computedMemberNames = set = new Setlet<String>(); | |
| 835 } else { | |
| 836 set = computedMemberNames; | |
| 837 } | |
| 838 set.add(name); | |
| 839 } | |
| 840 } | |
| 841 | |
| 842 void computeAllClassMembers(Compiler compiler) { | |
| 843 if (areAllMembersComputed()) return; | |
| 844 MembersCreator creator = _prepareCreator(compiler); | |
| 845 creator.computeAllMembers(); | |
| 846 computedMemberNames = null; | |
| 847 assert(invariant(this, areAllMembersComputed())); | |
| 848 } | |
| 849 | |
| 850 bool areAllMembersComputed() { | |
| 851 return computedMemberNames == null && classMembers != null; | |
| 852 } | |
| 853 | |
| 854 bool isMemberComputed(String name) { | |
| 855 if (computedMemberNames == null) { | |
| 856 return classMembers != null; | |
| 857 } else { | |
| 858 return name == Compiler.CALL_OPERATOR_NAME || | |
| 859 computedMemberNames.contains(name); | |
| 860 } | |
| 861 } | |
| 862 | |
| 863 Member lookupClassMember(Name name) { | |
| 864 assert(invariant(this, | |
| 865 isMemberComputed(name.text), | |
| 866 message: "Member ${name} has not been computed for $this.")); | |
| 867 return classMembers[name]; | |
| 868 } | |
| 869 | |
| 870 void forEachClassMember(f(Member member)) { | |
| 871 assert(invariant(this, areAllMembersComputed(), | |
| 872 message: "Members have not been fully computed for $this.")); | |
| 873 classMembers.forEach((_, member) => f(member)); | |
| 874 } | |
| 875 | |
| 876 MemberSignature lookupInterfaceMember(Name name) { | |
| 877 assert(invariant(this, isMemberComputed(name.text), | |
| 878 message: "Member ${name.text} has not been computed for $this.")); | |
| 879 if (interfaceMembersAreClassMembers) { | |
| 880 Member member = classMembers[name]; | |
| 881 if (member != null && member.isStatic) return null; | |
| 882 return member; | |
| 883 } | |
| 884 return interfaceMembers[name]; | |
| 885 } | |
| 886 | |
| 887 void forEachInterfaceMember(f(MemberSignature member)) { | |
| 888 assert(invariant(this, areAllMembersComputed(), | |
| 889 message: "Members have not been fully computed for $this.")); | |
| 890 if (interfaceMembersAreClassMembers) { | |
| 891 classMembers.forEach((_, member) { | |
| 892 if (!member.isStatic) f(member); | |
| 893 }); | |
| 894 } else { | |
| 895 interfaceMembers.forEach((_, member) => f(member)); | |
| 896 } | |
| 897 } | |
| 898 } | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 694353007:
Move dart2js from sdk/lib/_internal/compiler to pkg/compiler (Closed)
Base URL: https://dart.googlecode.com/svn/branches/bleeding_edge/dart