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| 1 // Copyright (c) 2013, 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 dart2js.ir_builder_task; | |
| 6 | |
| 7 import 'package:js_runtime/shared/embedded_names.dart' | |
| 8 show JsBuiltin, JsGetName; | |
| 9 | |
| 10 import '../closure.dart' as closure; | |
| 11 import '../common.dart'; | |
| 12 import '../common/names.dart' show Identifiers, Names, Selectors; | |
| 13 import '../common/tasks.dart' show CompilerTask; | |
| 14 import '../compiler.dart' show Compiler; | |
| 15 import '../constants/expressions.dart'; | |
| 16 import '../constants/values.dart' show ConstantValue; | |
| 17 import '../constants/values.dart'; | |
| 18 import '../dart_types.dart'; | |
| 19 import '../elements/elements.dart'; | |
| 20 import '../elements/modelx.dart' show ConstructorBodyElementX; | |
| 21 import '../io/source_information.dart'; | |
| 22 import '../js/js.dart' as js show js, Template, Expression, Name; | |
| 23 import '../js_backend/backend_helpers.dart' show BackendHelpers; | |
| 24 import '../js_backend/js_backend.dart' | |
| 25 show JavaScriptBackend, SyntheticConstantKind; | |
| 26 import '../native/native.dart' show NativeBehavior, HasCapturedPlaceholders; | |
| 27 import '../resolution/operators.dart' as op; | |
| 28 import '../resolution/semantic_visitor.dart'; | |
| 29 import '../resolution/tree_elements.dart' show TreeElements; | |
| 30 import '../ssa/types.dart' show TypeMaskFactory; | |
| 31 import '../tree/tree.dart' as ast; | |
| 32 import '../types/types.dart' show TypeMask; | |
| 33 import '../universe/call_structure.dart' show CallStructure; | |
| 34 import '../universe/selector.dart' show Selector; | |
| 35 import '../util/util.dart'; | |
| 36 import 'cps_ir_builder.dart'; | |
| 37 import 'cps_ir_nodes.dart' as ir; | |
| 38 import 'type_mask_system.dart' show TypeMaskSystem; | |
| 39 // TODO(karlklose): remove. | |
| 40 | |
| 41 typedef void IrBuilderCallback(Element element, ir.FunctionDefinition irNode); | |
| 42 | |
| 43 class ExplicitReceiverParameter implements Local { | |
| 44 final ExecutableElement executableContext; | |
| 45 | |
| 46 ExplicitReceiverParameter(this.executableContext); | |
| 47 | |
| 48 String get name => 'receiver'; | |
| 49 String toString() => 'ExplicitReceiverParameter($executableContext)'; | |
| 50 } | |
| 51 | |
| 52 /// This task provides the interface to build IR nodes from [ast.Node]s, which | |
| 53 /// is used from the [CpsFunctionCompiler] to generate code. | |
| 54 /// | |
| 55 /// This class is mainly there to correctly measure how long building the IR | |
| 56 /// takes. | |
| 57 class IrBuilderTask extends CompilerTask { | |
| 58 final SourceInformationStrategy sourceInformationStrategy; | |
| 59 final Compiler compiler; | |
| 60 | |
| 61 String bailoutMessage = null; | |
| 62 | |
| 63 /// If not null, this function will be called with for each | |
| 64 /// [ir.FunctionDefinition] node that has been built. | |
| 65 IrBuilderCallback builderCallback; | |
| 66 | |
| 67 IrBuilderTask(Compiler compiler, this.sourceInformationStrategy, | |
| 68 [this.builderCallback]) | |
| 69 : compiler = compiler, | |
| 70 super(compiler.measurer); | |
| 71 | |
| 72 String get name => 'CPS builder'; | |
| 73 | |
| 74 ir.FunctionDefinition buildNode( | |
| 75 AstElement element, TypeMaskSystem typeMaskSystem) { | |
| 76 return measure(() { | |
| 77 bailoutMessage = null; | |
| 78 | |
| 79 ResolvedAst resolvedAst = element.resolvedAst; | |
| 80 element = element.implementation; | |
| 81 return compiler.reporter.withCurrentElement(element, () { | |
| 82 SourceInformationBuilder sourceInformationBuilder = | |
| 83 sourceInformationStrategy.createBuilderForContext(resolvedAst); | |
| 84 | |
| 85 IrBuilderVisitor builder = new IrBuilderVisitor( | |
| 86 resolvedAst, compiler, sourceInformationBuilder, typeMaskSystem); | |
| 87 ir.FunctionDefinition irNode = builder.buildExecutable(element); | |
| 88 if (irNode == null) { | |
| 89 bailoutMessage = builder.bailoutMessage; | |
| 90 } else if (builderCallback != null) { | |
| 91 builderCallback(element, irNode); | |
| 92 } | |
| 93 return irNode; | |
| 94 }); | |
| 95 }); | |
| 96 } | |
| 97 } | |
| 98 | |
| 99 /// Translates the frontend AST of a method to its CPS IR. | |
| 100 /// | |
| 101 /// The visitor has an [IrBuilder] which contains an IR fragment to build upon | |
| 102 /// and the current reaching definition of local variables. | |
| 103 /// | |
| 104 /// Visiting a statement or expression extends the IR builder's fragment. | |
| 105 /// For expressions, the primitive holding the resulting value is returned. | |
| 106 /// For statements, `null` is returned. | |
| 107 // TODO(johnniwinther): Implement [SemanticDeclVisitor]. | |
| 108 class IrBuilderVisitor extends ast.Visitor<ir.Primitive> | |
| 109 with | |
| 110 IrBuilderMixin<ast.Node>, | |
| 111 SemanticSendResolvedMixin<ir.Primitive, dynamic>, | |
| 112 ErrorBulkMixin<ir.Primitive, dynamic>, | |
| 113 BaseImplementationOfStaticsMixin<ir.Primitive, dynamic>, | |
| 114 BaseImplementationOfLocalsMixin<ir.Primitive, dynamic>, | |
| 115 BaseImplementationOfDynamicsMixin<ir.Primitive, dynamic>, | |
| 116 BaseImplementationOfConstantsMixin<ir.Primitive, dynamic>, | |
| 117 BaseImplementationOfNewMixin<ir.Primitive, dynamic>, | |
| 118 BaseImplementationOfCompoundsMixin<ir.Primitive, dynamic>, | |
| 119 BaseImplementationOfSetIfNullsMixin<ir.Primitive, dynamic>, | |
| 120 BaseImplementationOfIndexCompoundsMixin<ir.Primitive, dynamic>, | |
| 121 BaseImplementationOfSuperIndexSetIfNullMixin<ir.Primitive, dynamic> | |
| 122 implements SemanticSendVisitor<ir.Primitive, dynamic> { | |
| 123 final ResolvedAst resolvedAst; | |
| 124 final Compiler compiler; | |
| 125 final SourceInformationBuilder sourceInformationBuilder; | |
| 126 final TypeMaskSystem typeMaskSystem; | |
| 127 | |
| 128 /// A map from try statements in the source to analysis information about | |
| 129 /// them. | |
| 130 /// | |
| 131 /// The analysis information includes the set of variables that must be | |
| 132 /// copied into [ir.MutableVariable]s on entry to the try and copied out on | |
| 133 /// exit. | |
| 134 Map<ast.Node, TryStatementInfo> tryStatements = null; | |
| 135 | |
| 136 // In SSA terms, join-point continuation parameters are the phis and the | |
| 137 // continuation invocation arguments are the corresponding phi inputs. To | |
| 138 // support name introduction and renaming for source level variables, we use | |
| 139 // nested (delimited) visitors for constructing subparts of the IR that will | |
| 140 // need renaming. Each source variable is assigned an index. | |
| 141 // | |
| 142 // Each nested visitor maintains a list of free variable uses in the body. | |
| 143 // These are implemented as a list of parameters, each with their own use | |
| 144 // list of references. When the delimited subexpression is plugged into the | |
| 145 // surrounding context, the free occurrences can be captured or become free | |
| 146 // occurrences in the next outer delimited subexpression. | |
| 147 // | |
| 148 // Each nested visitor maintains a list that maps indexes of variables | |
| 149 // assigned in the delimited subexpression to their reaching definition --- | |
| 150 // that is, the definition in effect at the hole in 'current'. These are | |
| 151 // used to determine if a join-point continuation needs to be passed | |
| 152 // arguments, and what the arguments are. | |
| 153 | |
| 154 /// Construct a top-level visitor. | |
| 155 IrBuilderVisitor(this.resolvedAst, this.compiler, | |
| 156 this.sourceInformationBuilder, this.typeMaskSystem); | |
| 157 | |
| 158 TreeElements get elements => resolvedAst.elements; | |
| 159 | |
| 160 JavaScriptBackend get backend => compiler.backend; | |
| 161 BackendHelpers get helpers => backend.helpers; | |
| 162 DiagnosticReporter get reporter => compiler.reporter; | |
| 163 | |
| 164 String bailoutMessage = null; | |
| 165 | |
| 166 ir.Primitive visit(ast.Node node) => node.accept(this); | |
| 167 | |
| 168 @override | |
| 169 ir.Primitive apply(ast.Node node, _) => node.accept(this); | |
| 170 | |
| 171 SemanticSendVisitor get sendVisitor => this; | |
| 172 | |
| 173 /// Result of closure conversion for the current body of code. | |
| 174 /// | |
| 175 /// Will be initialized upon entering the body of a function. | |
| 176 /// It is computed by the [ClosureTranslator]. | |
| 177 closure.ClosureClassMap closureClassMap; | |
| 178 | |
| 179 /// If [node] has declarations for variables that should be boxed, | |
| 180 /// returns a [ClosureScope] naming a box to create, and enumerating the | |
| 181 /// variables that should be stored in the box. | |
| 182 /// | |
| 183 /// Also see [ClosureScope]. | |
| 184 ClosureScope getClosureScopeForNode(ast.Node node) { | |
| 185 // We translate a ClosureScope from closure.dart into IR builder's variant | |
| 186 // because the IR builder should not depend on the synthetic elements | |
| 187 // created in closure.dart. | |
| 188 return new ClosureScope(closureClassMap.capturingScopes[node]); | |
| 189 } | |
| 190 | |
| 191 /// Returns the [ClosureScope] for any function, possibly different from the | |
| 192 /// one currently being built. | |
| 193 ClosureScope getClosureScopeForFunction(FunctionElement function) { | |
| 194 closure.ClosureClassMap map = compiler.closureToClassMapper | |
| 195 .computeClosureToClassMapping(function.resolvedAst); | |
| 196 return new ClosureScope(map.capturingScopes[function.node]); | |
| 197 } | |
| 198 | |
| 199 /// If the current function is a nested function with free variables (or a | |
| 200 /// captured reference to `this`), returns a [ClosureEnvironment] | |
| 201 /// indicating how to access these. | |
| 202 ClosureEnvironment getClosureEnvironment() { | |
| 203 return new ClosureEnvironment(closureClassMap); | |
| 204 } | |
| 205 | |
| 206 IrBuilder getBuilderFor(Element element) { | |
| 207 return new IrBuilder( | |
| 208 new GlobalProgramInformation(compiler), backend.constants, element); | |
| 209 } | |
| 210 | |
| 211 /// Builds the [ir.FunctionDefinition] for an executable element. In case the | |
| 212 /// function uses features that cannot be expressed in the IR, this element | |
| 213 /// returns `null`. | |
| 214 ir.FunctionDefinition buildExecutable(ExecutableElement element) { | |
| 215 return nullIfGiveup(() { | |
| 216 ir.FunctionDefinition root; | |
| 217 switch (element.kind) { | |
| 218 case ElementKind.GENERATIVE_CONSTRUCTOR: | |
| 219 root = buildConstructor(element); | |
| 220 break; | |
| 221 | |
| 222 case ElementKind.GENERATIVE_CONSTRUCTOR_BODY: | |
| 223 root = buildConstructorBody(element); | |
| 224 break; | |
| 225 | |
| 226 case ElementKind.FACTORY_CONSTRUCTOR: | |
| 227 case ElementKind.FUNCTION: | |
| 228 case ElementKind.GETTER: | |
| 229 case ElementKind.SETTER: | |
| 230 root = buildFunction(element); | |
| 231 break; | |
| 232 | |
| 233 case ElementKind.FIELD: | |
| 234 if (Elements.isStaticOrTopLevel(element)) { | |
| 235 root = buildStaticFieldInitializer(element); | |
| 236 } else { | |
| 237 // Instance field initializers are inlined in the constructor, | |
| 238 // so we shouldn't need to build anything here. | |
| 239 // TODO(asgerf): But what should we return? | |
| 240 return null; | |
| 241 } | |
| 242 break; | |
| 243 | |
| 244 default: | |
| 245 reporter.internalError(element, "Unexpected element type $element"); | |
| 246 } | |
| 247 return root; | |
| 248 }); | |
| 249 } | |
| 250 | |
| 251 /// Loads the type variables for all super classes of [superClass] into the | |
| 252 /// IR builder's environment with their corresponding values. | |
| 253 /// | |
| 254 /// The type variables for [currentClass] must already be in the IR builder's | |
| 255 /// environment. | |
| 256 /// | |
| 257 /// Type variables are stored as [TypeVariableLocal] in the environment. | |
| 258 /// | |
| 259 /// This ensures that access to type variables mentioned inside the | |
| 260 /// constructors and initializers will happen through the local environment | |
| 261 /// instead of using 'this'. | |
| 262 void loadTypeVariablesForSuperClasses(ClassElement currentClass) { | |
| 263 if (currentClass.isObject) return; | |
| 264 loadTypeVariablesForType(currentClass.supertype); | |
| 265 if (currentClass is MixinApplicationElement) { | |
| 266 loadTypeVariablesForType(currentClass.mixinType); | |
| 267 } | |
| 268 } | |
| 269 | |
| 270 /// Loads all type variables for [type] and all of its super classes into | |
| 271 /// the environment. All type variables mentioned in [type] must already | |
| 272 /// be in the environment. | |
| 273 void loadTypeVariablesForType(InterfaceType type) { | |
| 274 ClassElement clazz = type.element; | |
| 275 assert(clazz.typeVariables.length == type.typeArguments.length); | |
| 276 for (int i = 0; i < clazz.typeVariables.length; ++i) { | |
| 277 irBuilder.declareTypeVariable( | |
| 278 clazz.typeVariables[i], type.typeArguments[i]); | |
| 279 } | |
| 280 loadTypeVariablesForSuperClasses(clazz); | |
| 281 } | |
| 282 | |
| 283 /// Returns the constructor body associated with the given constructor or | |
| 284 /// creates a new constructor body, if none can be found. | |
| 285 /// | |
| 286 /// Returns `null` if the constructor does not have a body. | |
| 287 ConstructorBodyElement getConstructorBody(FunctionElement constructor) { | |
| 288 // TODO(asgerf): This is largely inherited from the SSA builder. | |
| 289 // The ConstructorBodyElement has an invalid function signature, but we | |
| 290 // cannot add a BoxLocal as parameter, because BoxLocal is not an element. | |
| 291 // Instead of forging ParameterElements to forge a FunctionSignature, we | |
| 292 // need a way to create backend methods without creating more fake elements. | |
| 293 assert(constructor.isGenerativeConstructor); | |
| 294 assert(constructor.isImplementation); | |
| 295 if (constructor.isSynthesized) return null; | |
| 296 ResolvedAst resolvedAst = constructor.resolvedAst; | |
| 297 ast.FunctionExpression node = constructor.node; | |
| 298 // If we know the body doesn't have any code, we don't generate it. | |
| 299 if (!node.hasBody) return null; | |
| 300 if (node.hasEmptyBody) return null; | |
| 301 ClassElement classElement = constructor.enclosingClass; | |
| 302 ConstructorBodyElement bodyElement; | |
| 303 classElement.forEachBackendMember((Element backendMember) { | |
| 304 if (backendMember.isGenerativeConstructorBody) { | |
| 305 ConstructorBodyElement body = backendMember; | |
| 306 if (body.constructor == constructor) { | |
| 307 bodyElement = backendMember; | |
| 308 } | |
| 309 } | |
| 310 }); | |
| 311 if (bodyElement == null) { | |
| 312 bodyElement = new ConstructorBodyElementX(resolvedAst, constructor); | |
| 313 classElement.addBackendMember(bodyElement); | |
| 314 | |
| 315 if (constructor.isPatch) { | |
| 316 // Create origin body element for patched constructors. | |
| 317 ConstructorBodyElementX patch = bodyElement; | |
| 318 ConstructorBodyElementX origin = | |
| 319 new ConstructorBodyElementX(resolvedAst, constructor.origin); | |
| 320 origin.applyPatch(patch); | |
| 321 classElement.origin.addBackendMember(bodyElement.origin); | |
| 322 } | |
| 323 } | |
| 324 assert(bodyElement.isGenerativeConstructorBody); | |
| 325 return bodyElement; | |
| 326 } | |
| 327 | |
| 328 /// The list of parameters to send from the generative constructor | |
| 329 /// to the generative constructor body. | |
| 330 /// | |
| 331 /// Boxed parameters are not in the list, instead, a [BoxLocal] is passed | |
| 332 /// containing the boxed parameters. | |
| 333 /// | |
| 334 /// For example, given the following constructor, | |
| 335 /// | |
| 336 /// Foo(x, y) : field = (() => ++x) { print(x + y) } | |
| 337 /// | |
| 338 /// the argument `x` would be replaced by a [BoxLocal]: | |
| 339 /// | |
| 340 /// Foo_body(box0, y) { print(box0.x + y) } | |
| 341 /// | |
| 342 List<Local> getConstructorBodyParameters(ConstructorBodyElement body) { | |
| 343 List<Local> parameters = <Local>[]; | |
| 344 ClosureScope scope = getClosureScopeForFunction(body.constructor); | |
| 345 if (scope != null) { | |
| 346 parameters.add(scope.box); | |
| 347 } | |
| 348 body.functionSignature.orderedForEachParameter((ParameterElement param) { | |
| 349 if (scope != null && scope.capturedVariables.containsKey(param)) { | |
| 350 // Do not pass this parameter; the box will carry its value. | |
| 351 } else { | |
| 352 parameters.add(param); | |
| 353 } | |
| 354 }); | |
| 355 return parameters; | |
| 356 } | |
| 357 | |
| 358 /// Builds the IR for a given constructor. | |
| 359 /// | |
| 360 /// 1. Computes the type held in all own or "inherited" type variables. | |
| 361 /// 2. Evaluates all own or inherited field initializers. | |
| 362 /// 3. Creates the object and assigns its fields and runtime type. | |
| 363 /// 4. Calls constructor body and super constructor bodies. | |
| 364 /// 5. Returns the created object. | |
| 365 ir.FunctionDefinition buildConstructor(ConstructorElement constructor) { | |
| 366 // TODO(asgerf): Optimization: If constructor is redirecting, then just | |
| 367 // evaluate arguments and call the target constructor. | |
| 368 constructor = constructor.implementation; | |
| 369 ClassElement classElement = constructor.enclosingClass.implementation; | |
| 370 | |
| 371 IrBuilder builder = getBuilderFor(constructor); | |
| 372 | |
| 373 final bool requiresTypeInformation = | |
| 374 builder.program.requiresRuntimeTypesFor(classElement); | |
| 375 | |
| 376 return withBuilder(builder, () { | |
| 377 // Setup parameters and create a box if anything is captured. | |
| 378 List<Local> parameters = <Local>[]; | |
| 379 if (constructor.isGenerativeConstructor && | |
| 380 backend.isNativeOrExtendsNative(classElement)) { | |
| 381 parameters.add(new ExplicitReceiverParameter(constructor)); | |
| 382 } | |
| 383 constructor.functionSignature | |
| 384 .orderedForEachParameter((ParameterElement p) => parameters.add(p)); | |
| 385 | |
| 386 int firstTypeArgumentParameterIndex; | |
| 387 | |
| 388 // If instances of the class may need runtime type information, we add a | |
| 389 // synthetic parameter for each type parameter. | |
| 390 if (requiresTypeInformation) { | |
| 391 firstTypeArgumentParameterIndex = parameters.length; | |
| 392 classElement.typeVariables.forEach((TypeVariableType variable) { | |
| 393 parameters.add(new closure.TypeVariableLocal(variable, constructor)); | |
| 394 }); | |
| 395 } else { | |
| 396 classElement.typeVariables.forEach((TypeVariableType variable) { | |
| 397 irBuilder.declareTypeVariable(variable, const DynamicType()); | |
| 398 }); | |
| 399 } | |
| 400 | |
| 401 // Create IR parameters and setup the environment. | |
| 402 List<ir.Parameter> irParameters = builder.buildFunctionHeader(parameters, | |
| 403 closureScope: getClosureScopeForFunction(constructor)); | |
| 404 | |
| 405 // Create a list of the values of all type argument parameters, if any. | |
| 406 ir.Primitive typeInformation; | |
| 407 if (requiresTypeInformation) { | |
| 408 typeInformation = new ir.TypeExpression( | |
| 409 ir.TypeExpressionKind.INSTANCE, | |
| 410 classElement.thisType, | |
| 411 irParameters.sublist(firstTypeArgumentParameterIndex)); | |
| 412 irBuilder.add(new ir.LetPrim(typeInformation)); | |
| 413 } else { | |
| 414 typeInformation = null; | |
| 415 } | |
| 416 | |
| 417 // -- Load values for type variables declared on super classes -- | |
| 418 // Field initializers for super classes can reference these, so they | |
| 419 // must be available before evaluating field initializers. | |
| 420 // This could be interleaved with field initialization, but we choose do | |
| 421 // get it out of the way here to avoid complications with mixins. | |
| 422 loadTypeVariablesForSuperClasses(classElement); | |
| 423 | |
| 424 /// Maps each field from this class or a superclass to its initial value. | |
| 425 Map<FieldElement, ir.Primitive> fieldValues = | |
| 426 <FieldElement, ir.Primitive>{}; | |
| 427 | |
| 428 // -- Evaluate field initializers --- | |
| 429 // Evaluate field initializers in constructor and super constructors. | |
| 430 List<ConstructorElement> constructorList = <ConstructorElement>[]; | |
| 431 evaluateConstructorFieldInitializers( | |
| 432 constructor, constructorList, fieldValues); | |
| 433 | |
| 434 // All parameters in all constructors are now bound in the environment. | |
| 435 // BoxLocals for captured parameters are also in the environment. | |
| 436 // The initial value of all fields are now bound in [fieldValues]. | |
| 437 | |
| 438 // --- Create the object --- | |
| 439 // Get the initial field values in the canonical order. | |
| 440 List<ir.Primitive> instanceArguments = <ir.Primitive>[]; | |
| 441 List<FieldElement> fields = <FieldElement>[]; | |
| 442 classElement.forEachInstanceField((ClassElement c, FieldElement field) { | |
| 443 ir.Primitive value = fieldValues[field]; | |
| 444 if (value != null) { | |
| 445 fields.add(field); | |
| 446 instanceArguments.add(value); | |
| 447 } else { | |
| 448 assert(backend.isNativeOrExtendsNative(c)); | |
| 449 // Native fields are initialized elsewhere. | |
| 450 } | |
| 451 }, includeSuperAndInjectedMembers: true); | |
| 452 | |
| 453 ir.Primitive instance; | |
| 454 if (constructor.isGenerativeConstructor && | |
| 455 backend.isNativeOrExtendsNative(classElement)) { | |
| 456 instance = irParameters.first; | |
| 457 instance.type = | |
| 458 new TypeMask.exact(classElement, typeMaskSystem.classWorld); | |
| 459 irBuilder.addPrimitive(new ir.ReceiverCheck.nullCheck( | |
| 460 instance, Selectors.toString_, null)); | |
| 461 for (int i = 0; i < fields.length; i++) { | |
| 462 irBuilder.addPrimitive( | |
| 463 new ir.SetField(instance, fields[i], instanceArguments[i])); | |
| 464 } | |
| 465 } else { | |
| 466 instance = new ir.CreateInstance( | |
| 467 classElement, | |
| 468 instanceArguments, | |
| 469 typeInformation, | |
| 470 constructor.hasNode | |
| 471 ? sourceInformationBuilder.buildCreate(constructor.node) | |
| 472 // TODO(johnniwinther): Provide source information for creation | |
| 473 // through synthetic constructors. | |
| 474 : null); | |
| 475 irBuilder.add(new ir.LetPrim(instance)); | |
| 476 } | |
| 477 | |
| 478 // --- Call constructor bodies --- | |
| 479 for (ConstructorElement target in constructorList) { | |
| 480 ConstructorBodyElement bodyElement = getConstructorBody(target); | |
| 481 if (bodyElement == null) continue; // Skip if constructor has no body. | |
| 482 List<ir.Primitive> bodyArguments = <ir.Primitive>[]; | |
| 483 for (Local param in getConstructorBodyParameters(bodyElement)) { | |
| 484 bodyArguments.add(irBuilder.environment.lookup(param)); | |
| 485 } | |
| 486 Selector selector = new Selector.call( | |
| 487 target.memberName, new CallStructure(bodyArguments.length)); | |
| 488 irBuilder.addPrimitive(new ir.InvokeMethodDirectly( | |
| 489 instance, bodyElement, selector, bodyArguments, null)); | |
| 490 } | |
| 491 | |
| 492 // --- step 4: return the created object ---- | |
| 493 irBuilder.buildReturn( | |
| 494 value: instance, | |
| 495 sourceInformation: | |
| 496 sourceInformationBuilder.buildImplicitReturn(constructor)); | |
| 497 | |
| 498 return irBuilder.makeFunctionDefinition( | |
| 499 sourceInformationBuilder.buildVariableDeclaration()); | |
| 500 }); | |
| 501 } | |
| 502 | |
| 503 /// Make a visitor suitable for translating ASTs taken from [context]. | |
| 504 /// | |
| 505 /// Every visitor can only be applied to nodes in one context, because | |
| 506 /// the [elements] field is specific to that context. | |
| 507 IrBuilderVisitor makeVisitorForContext(AstElement context) { | |
| 508 ResolvedAst resolvedAst = context.resolvedAst; | |
| 509 return new IrBuilderVisitor(resolvedAst, compiler, | |
| 510 sourceInformationBuilder.forContext(resolvedAst), typeMaskSystem); | |
| 511 } | |
| 512 | |
| 513 /// Builds the IR for an [expression] taken from a different [context]. | |
| 514 /// | |
| 515 /// Such expressions need to be compiled with a different [sourceFile] and | |
| 516 /// [elements] mapping. | |
| 517 ir.Primitive inlineExpression(AstElement context, ast.Expression expression) { | |
| 518 IrBuilderVisitor visitor = makeVisitorForContext(context); | |
| 519 return visitor.withBuilder(irBuilder, () => visitor.visit(expression)); | |
| 520 } | |
| 521 | |
| 522 /// Evaluate the implicit super call in the given mixin constructor. | |
| 523 void forwardSynthesizedMixinConstructor( | |
| 524 ConstructorElement constructor, | |
| 525 List<ConstructorElement> supers, | |
| 526 Map<FieldElement, ir.Primitive> fieldValues) { | |
| 527 assert(constructor.enclosingClass.implementation.isMixinApplication); | |
| 528 assert(constructor.isSynthesized); | |
| 529 ConstructorElement target = constructor.definingConstructor.implementation; | |
| 530 // The resolver gives us the exact same FunctionSignature for the two | |
| 531 // constructors. The parameters for the synthesized constructor | |
| 532 // are already in the environment, so the target constructor's parameters | |
| 533 // are also in the environment since their elements are the same. | |
| 534 assert(constructor.functionSignature == target.functionSignature); | |
| 535 IrBuilderVisitor visitor = makeVisitorForContext(target); | |
| 536 visitor.withBuilder(irBuilder, () { | |
| 537 visitor.evaluateConstructorFieldInitializers(target, supers, fieldValues); | |
| 538 }); | |
| 539 } | |
| 540 | |
| 541 /// In preparation of inlining (part of) [target], the [arguments] are moved | |
| 542 /// into the environment bindings for the corresponding parameters. | |
| 543 /// | |
| 544 /// Defaults for optional arguments are evaluated in order to ensure | |
| 545 /// all parameters are available in the environment. | |
| 546 void loadArguments(ConstructorElement target, CallStructure call, | |
| 547 List<ir.Primitive> arguments) { | |
| 548 assert(target.isImplementation); | |
| 549 assert(target.declaration == resolvedAst.element); | |
| 550 FunctionSignature signature = target.functionSignature; | |
| 551 | |
| 552 // Establish a scope in case parameters are captured. | |
| 553 ClosureScope scope = getClosureScopeForFunction(target); | |
| 554 irBuilder.enterScope(scope); | |
| 555 | |
| 556 // Load required parameters | |
| 557 int index = 0; | |
| 558 signature.forEachRequiredParameter((ParameterElement param) { | |
| 559 irBuilder.declareLocalVariable(param, initialValue: arguments[index]); | |
| 560 index++; | |
| 561 }); | |
| 562 | |
| 563 // Load optional parameters, evaluating default values for omitted ones. | |
| 564 signature.forEachOptionalParameter((ParameterElement param) { | |
| 565 ir.Primitive value; | |
| 566 // Load argument if provided. | |
| 567 if (signature.optionalParametersAreNamed) { | |
| 568 int nameIndex = call.namedArguments.indexOf(param.name); | |
| 569 if (nameIndex != -1) { | |
| 570 int translatedIndex = call.positionalArgumentCount + nameIndex; | |
| 571 value = arguments[translatedIndex]; | |
| 572 } | |
| 573 } else if (index < arguments.length) { | |
| 574 value = arguments[index]; | |
| 575 } | |
| 576 // Load default if argument was not provided. | |
| 577 if (value == null) { | |
| 578 if (param.initializer != null) { | |
| 579 value = visit(param.initializer); | |
| 580 } else { | |
| 581 value = irBuilder.buildNullConstant(); | |
| 582 } | |
| 583 } | |
| 584 irBuilder.declareLocalVariable(param, initialValue: value); | |
| 585 index++; | |
| 586 }); | |
| 587 } | |
| 588 | |
| 589 /// Evaluates a call to the given constructor from an initializer list. | |
| 590 /// | |
| 591 /// Calls [loadArguments] and [evaluateConstructorFieldInitializers] in a | |
| 592 /// visitor that has the proper [TreeElements] mapping. | |
| 593 void evaluateConstructorCallFromInitializer( | |
| 594 ConstructorElement target, | |
| 595 CallStructure call, | |
| 596 List<ir.Primitive> arguments, | |
| 597 List<ConstructorElement> supers, | |
| 598 Map<FieldElement, ir.Primitive> fieldValues) { | |
| 599 IrBuilderVisitor visitor = makeVisitorForContext(target); | |
| 600 visitor.withBuilder(irBuilder, () { | |
| 601 visitor.loadArguments(target, call, arguments); | |
| 602 visitor.evaluateConstructorFieldInitializers(target, supers, fieldValues); | |
| 603 }); | |
| 604 } | |
| 605 | |
| 606 /// Evaluates all field initializers on [constructor] and all constructors | |
| 607 /// invoked through `this()` or `super()` ("superconstructors"). | |
| 608 /// | |
| 609 /// The resulting field values will be available in [fieldValues]. The values | |
| 610 /// are not stored in any fields. | |
| 611 /// | |
| 612 /// This procedure assumes that the parameters to [constructor] are available | |
| 613 /// in the IR builder's environment. | |
| 614 /// | |
| 615 /// The parameters to superconstructors are, however, assumed *not* to be in | |
| 616 /// the environment, but will be put there by this procedure. | |
| 617 /// | |
| 618 /// All constructors will be added to [supers], with superconstructors first. | |
| 619 void evaluateConstructorFieldInitializers( | |
| 620 ConstructorElement constructor, | |
| 621 List<ConstructorElement> supers, | |
| 622 Map<FieldElement, ir.Primitive> fieldValues) { | |
| 623 assert(constructor.isImplementation); | |
| 624 assert(constructor.declaration == resolvedAst.element); | |
| 625 ClassElement enclosingClass = constructor.enclosingClass.implementation; | |
| 626 // Evaluate declaration-site field initializers, unless this constructor | |
| 627 // redirects to another using a `this()` initializer. In that case, these | |
| 628 // will be initialized by the effective target constructor. | |
| 629 if (!constructor.isRedirectingGenerative) { | |
| 630 enclosingClass.forEachInstanceField((ClassElement c, FieldElement field) { | |
| 631 if (field.initializer != null) { | |
| 632 fieldValues[field] = inlineExpression(field, field.initializer); | |
| 633 } else { | |
| 634 if (backend.isNativeOrExtendsNative(c)) { | |
| 635 // Native field is initialized elsewhere. | |
| 636 } else { | |
| 637 // Fields without an initializer default to null. | |
| 638 // This value will be overwritten below if an initializer is found. | |
| 639 fieldValues[field] = irBuilder.buildNullConstant(); | |
| 640 } | |
| 641 } | |
| 642 }); | |
| 643 } | |
| 644 // If this is a mixin constructor, it does not have its own parameter list | |
| 645 // or initializer list. Directly forward to the super constructor. | |
| 646 // Note that the declaration-site initializers originating from the | |
| 647 // mixed-in class were handled above. | |
| 648 if (enclosingClass.isMixinApplication) { | |
| 649 forwardSynthesizedMixinConstructor(constructor, supers, fieldValues); | |
| 650 return; | |
| 651 } | |
| 652 // Evaluate initializing parameters, e.g. `Foo(this.x)`. | |
| 653 constructor.functionSignature | |
| 654 .orderedForEachParameter((ParameterElement parameter) { | |
| 655 if (parameter.isInitializingFormal) { | |
| 656 InitializingFormalElement fieldParameter = parameter; | |
| 657 fieldValues[fieldParameter.fieldElement] = | |
| 658 irBuilder.buildLocalGet(parameter); | |
| 659 } | |
| 660 }); | |
| 661 // Evaluate constructor initializers, e.g. `Foo() : x = 50`. | |
| 662 ast.FunctionExpression node = constructor.node; | |
| 663 bool hasConstructorCall = false; // Has this() or super() initializer? | |
| 664 if (node != null && node.initializers != null) { | |
| 665 for (ast.Node initializer in node.initializers) { | |
| 666 if (initializer is ast.SendSet) { | |
| 667 // Field initializer. | |
| 668 FieldElement field = elements[initializer]; | |
| 669 fieldValues[field] = visit(initializer.arguments.head); | |
| 670 } else if (initializer is ast.Send) { | |
| 671 // Super or this initializer. | |
| 672 ConstructorElement target = elements[initializer].implementation; | |
| 673 Selector selector = elements.getSelector(initializer); | |
| 674 List<ir.Primitive> arguments = initializer.arguments.mapToList(visit); | |
| 675 evaluateConstructorCallFromInitializer( | |
| 676 target, selector.callStructure, arguments, supers, fieldValues); | |
| 677 hasConstructorCall = true; | |
| 678 } else { | |
| 679 reporter.internalError( | |
| 680 initializer, "Unexpected initializer type $initializer"); | |
| 681 } | |
| 682 } | |
| 683 } | |
| 684 // If no super() or this() was found, also call default superconstructor. | |
| 685 if (!hasConstructorCall && !enclosingClass.isObject) { | |
| 686 ClassElement superClass = enclosingClass.superclass; | |
| 687 FunctionElement target = superClass.lookupDefaultConstructor(); | |
| 688 if (target == null) { | |
| 689 reporter.internalError(superClass, "No default constructor available."); | |
| 690 } | |
| 691 target = target.implementation; | |
| 692 evaluateConstructorCallFromInitializer( | |
| 693 target, CallStructure.NO_ARGS, const [], supers, fieldValues); | |
| 694 } | |
| 695 // Add this constructor after the superconstructors. | |
| 696 supers.add(constructor); | |
| 697 } | |
| 698 | |
| 699 TryBoxedVariables _analyzeTryBoxedVariables(ast.Node node) { | |
| 700 TryBoxedVariables variables = new TryBoxedVariables(elements); | |
| 701 try { | |
| 702 variables.analyze(node); | |
| 703 } catch (e) { | |
| 704 bailoutMessage = variables.bailoutMessage; | |
| 705 rethrow; | |
| 706 } | |
| 707 return variables; | |
| 708 } | |
| 709 | |
| 710 /// Builds the IR for the body of a constructor. | |
| 711 /// | |
| 712 /// This function is invoked from one or more "factory" constructors built by | |
| 713 /// [buildConstructor]. | |
| 714 ir.FunctionDefinition buildConstructorBody(ConstructorBodyElement body) { | |
| 715 ConstructorElement constructor = body.constructor; | |
| 716 ast.FunctionExpression node = constructor.node; | |
| 717 closureClassMap = compiler.closureToClassMapper | |
| 718 .computeClosureToClassMapping(constructor.resolvedAst); | |
| 719 | |
| 720 // We compute variables boxed in mutable variables on entry to each try | |
| 721 // block, not including variables captured by a closure (which are boxed | |
| 722 // in the heap). This duplicates some of the work of closure conversion | |
| 723 // without directly using the results. This duplication is wasteful and | |
| 724 // error-prone. | |
| 725 // TODO(kmillikin): We should combine closure conversion and try/catch | |
| 726 // variable analysis in some way. | |
| 727 TryBoxedVariables variables = _analyzeTryBoxedVariables(node); | |
| 728 tryStatements = variables.tryStatements; | |
| 729 IrBuilder builder = getBuilderFor(body); | |
| 730 | |
| 731 return withBuilder(builder, () { | |
| 732 irBuilder.buildConstructorBodyHeader( | |
| 733 getConstructorBodyParameters(body), getClosureScopeForNode(node)); | |
| 734 visit(node.body); | |
| 735 return irBuilder.makeFunctionDefinition( | |
| 736 sourceInformationBuilder.buildVariableDeclaration()); | |
| 737 }); | |
| 738 } | |
| 739 | |
| 740 ir.FunctionDefinition buildFunction(FunctionElement element) { | |
| 741 assert(invariant(element, element.isImplementation)); | |
| 742 ast.FunctionExpression node = element.node; | |
| 743 | |
| 744 assert(!element.isSynthesized); | |
| 745 assert(node != null); | |
| 746 assert(elements[node] != null); | |
| 747 | |
| 748 closureClassMap = compiler.closureToClassMapper | |
| 749 .computeClosureToClassMapping(element.resolvedAst); | |
| 750 TryBoxedVariables variables = _analyzeTryBoxedVariables(node); | |
| 751 tryStatements = variables.tryStatements; | |
| 752 IrBuilder builder = getBuilderFor(element); | |
| 753 return withBuilder( | |
| 754 builder, () => _makeFunctionBody(builder, element, node)); | |
| 755 } | |
| 756 | |
| 757 ir.FunctionDefinition buildStaticFieldInitializer(FieldElement element) { | |
| 758 if (!backend.constants.lazyStatics.contains(element)) { | |
| 759 return null; // Nothing to do. | |
| 760 } | |
| 761 closureClassMap = compiler.closureToClassMapper | |
| 762 .computeClosureToClassMapping(element.resolvedAst); | |
| 763 IrBuilder builder = getBuilderFor(element); | |
| 764 return withBuilder(builder, () { | |
| 765 irBuilder.buildFunctionHeader(<Local>[]); | |
| 766 ir.Primitive initialValue = visit(element.initializer); | |
| 767 ast.VariableDefinitions node = element.node; | |
| 768 ast.SendSet sendSet = node.definitions.nodes.head; | |
| 769 irBuilder.buildReturn( | |
| 770 value: initialValue, | |
| 771 sourceInformation: | |
| 772 sourceInformationBuilder.buildReturn(sendSet.assignmentOperator)); | |
| 773 return irBuilder.makeFunctionDefinition( | |
| 774 sourceInformationBuilder.buildVariableDeclaration()); | |
| 775 }); | |
| 776 } | |
| 777 | |
| 778 /// Builds the IR for a constant taken from a different [context]. | |
| 779 /// | |
| 780 /// Such constants need to be compiled with a different [sourceFile] and | |
| 781 /// [elements] mapping. | |
| 782 ir.Primitive inlineConstant(AstElement context, ast.Expression exp) { | |
| 783 IrBuilderVisitor visitor = makeVisitorForContext(context); | |
| 784 return visitor.withBuilder(irBuilder, () => visitor.translateConstant(exp)); | |
| 785 } | |
| 786 | |
| 787 /// Creates a primitive for the default value of [parameter]. | |
| 788 ir.Primitive translateDefaultValue(ParameterElement parameter) { | |
| 789 if (parameter.initializer == null || | |
| 790 // TODO(sigmund): JS doesn't support default values, so this should be | |
| 791 // reported as an error earlier (Issue #25759). | |
| 792 backend.isJsInterop(parameter.functionDeclaration)) { | |
| 793 return irBuilder.buildNullConstant(); | |
| 794 } else { | |
| 795 return inlineConstant(parameter.executableContext, parameter.initializer); | |
| 796 } | |
| 797 } | |
| 798 | |
| 799 /// Normalizes the argument list of a static invocation. | |
| 800 /// | |
| 801 /// A static invocation is one where the target is known. The argument list | |
| 802 /// [arguments] is normalized by adding default values for optional arguments | |
| 803 /// that are not passed, and by sorting it in place so that named arguments | |
| 804 /// appear in a canonical order. A [CallStructure] reflecting this order | |
| 805 /// is returned. | |
| 806 CallStructure normalizeStaticArguments(CallStructure callStructure, | |
| 807 FunctionElement target, List<ir.Primitive> arguments) { | |
| 808 target = target.implementation; | |
| 809 FunctionSignature signature = target.functionSignature; | |
| 810 if (!signature.optionalParametersAreNamed && | |
| 811 signature.parameterCount == arguments.length) { | |
| 812 return callStructure; | |
| 813 } | |
| 814 | |
| 815 if (!signature.optionalParametersAreNamed) { | |
| 816 int i = signature.requiredParameterCount; | |
| 817 signature.forEachOptionalParameter((ParameterElement element) { | |
| 818 if (i < callStructure.positionalArgumentCount) { | |
| 819 ++i; | |
| 820 } else { | |
| 821 arguments.add(translateDefaultValue(element)); | |
| 822 } | |
| 823 }); | |
| 824 return new CallStructure(signature.parameterCount); | |
| 825 } | |
| 826 | |
| 827 int offset = signature.requiredParameterCount; | |
| 828 List<ir.Primitive> namedArguments = arguments.sublist(offset); | |
| 829 arguments.length = offset; | |
| 830 List<String> normalizedNames = <String>[]; | |
| 831 // Iterate over the optional parameters of the signature, and try to | |
| 832 // find them in the callStructure's named arguments. If found, we use the | |
| 833 // value in the temporary list, otherwise the default value. | |
| 834 signature.orderedOptionalParameters.forEach((ParameterElement element) { | |
| 835 int nameIndex = callStructure.namedArguments.indexOf(element.name); | |
| 836 arguments.add(nameIndex == -1 | |
| 837 ? translateDefaultValue(element) | |
| 838 : namedArguments[nameIndex]); | |
| 839 normalizedNames.add(element.name); | |
| 840 }); | |
| 841 return new CallStructure(signature.parameterCount, normalizedNames); | |
| 842 } | |
| 843 | |
| 844 /// Normalizes the argument list of a dynamic invocation. | |
| 845 /// | |
| 846 /// A dynamic invocation is one where the target is not known. The argument | |
| 847 /// list [arguments] is normalized by sorting it in place so that the named | |
| 848 /// arguments appear in a canonical order. A [CallStructure] reflecting this | |
| 849 /// order is returned. | |
| 850 CallStructure normalizeDynamicArguments( | |
| 851 CallStructure callStructure, List<ir.Primitive> arguments) { | |
| 852 assert(arguments.length == callStructure.argumentCount); | |
| 853 if (callStructure.namedArguments.isEmpty) return callStructure; | |
| 854 int destinationIndex = callStructure.positionalArgumentCount; | |
| 855 List<ir.Primitive> namedArguments = arguments.sublist(destinationIndex); | |
| 856 for (String argName in callStructure.getOrderedNamedArguments()) { | |
| 857 int sourceIndex = callStructure.namedArguments.indexOf(argName); | |
| 858 arguments[destinationIndex++] = namedArguments[sourceIndex]; | |
| 859 } | |
| 860 return new CallStructure( | |
| 861 callStructure.argumentCount, callStructure.getOrderedNamedArguments()); | |
| 862 } | |
| 863 | |
| 864 /// Read the value of [field]. | |
| 865 ir.Primitive buildStaticFieldGet(FieldElement field, SourceInformation src) { | |
| 866 ConstantValue constant = getConstantForVariable(field); | |
| 867 if (constant != null && !field.isAssignable) { | |
| 868 typeMaskSystem.associateConstantValueWithElement(constant, field); | |
| 869 return irBuilder.buildConstant(constant, sourceInformation: src); | |
| 870 } else if (backend.constants.lazyStatics.contains(field)) { | |
| 871 return irBuilder.addPrimitive(new ir.GetLazyStatic(field, | |
| 872 sourceInformation: src, | |
| 873 isFinal: compiler.world.fieldNeverChanges(field))); | |
| 874 } else { | |
| 875 return irBuilder.addPrimitive(new ir.GetStatic(field, | |
| 876 sourceInformation: src, | |
| 877 isFinal: compiler.world.fieldNeverChanges(field))); | |
| 878 } | |
| 879 } | |
| 880 | |
| 881 ir.FunctionDefinition _makeFunctionBody( | |
| 882 IrBuilder builder, FunctionElement element, ast.FunctionExpression node) { | |
| 883 FunctionSignature signature = element.functionSignature; | |
| 884 List<Local> parameters = <Local>[]; | |
| 885 signature.orderedForEachParameter( | |
| 886 (LocalParameterElement e) => parameters.add(e)); | |
| 887 | |
| 888 bool requiresRuntimeTypes = false; | |
| 889 if (element.isFactoryConstructor) { | |
| 890 requiresRuntimeTypes = | |
| 891 builder.program.requiresRuntimeTypesFor(element.enclosingElement); | |
| 892 if (requiresRuntimeTypes) { | |
| 893 // Type arguments are passed in as extra parameters. | |
| 894 for (DartType typeVariable in element.enclosingClass.typeVariables) { | |
| 895 parameters.add(new closure.TypeVariableLocal(typeVariable, element)); | |
| 896 } | |
| 897 } | |
| 898 } | |
| 899 | |
| 900 irBuilder.buildFunctionHeader(parameters, | |
| 901 closureScope: getClosureScopeForNode(node), | |
| 902 env: getClosureEnvironment()); | |
| 903 | |
| 904 if (element == helpers.jsArrayTypedConstructor) { | |
| 905 // Generate a body for JSArray<E>.typed(allocation): | |
| 906 // | |
| 907 // t1 = setRuntimeTypeInfo(allocation, TypeExpression($E)); | |
| 908 // return Refinement(t1, <JSArray>); | |
| 909 // | |
| 910 assert(parameters.length == 1 || parameters.length == 2); | |
| 911 ir.Primitive allocation = irBuilder.buildLocalGet(parameters[0]); | |
| 912 | |
| 913 // Only call setRuntimeTypeInfo if JSArray requires the type parameter. | |
| 914 if (requiresRuntimeTypes) { | |
| 915 assert(parameters.length == 2); | |
| 916 closure.TypeVariableLocal typeParameter = parameters[1]; | |
| 917 ir.Primitive typeArgument = | |
| 918 irBuilder.buildTypeVariableAccess(typeParameter.typeVariable); | |
| 919 | |
| 920 ir.Primitive typeInformation = irBuilder.addPrimitive( | |
| 921 new ir.TypeExpression(ir.TypeExpressionKind.INSTANCE, | |
| 922 element.enclosingClass.thisType, <ir.Primitive>[typeArgument])); | |
| 923 | |
| 924 MethodElement helper = helpers.setRuntimeTypeInfo; | |
| 925 CallStructure callStructure = CallStructure.TWO_ARGS; | |
| 926 Selector selector = new Selector.call(helper.memberName, callStructure); | |
| 927 allocation = irBuilder.buildInvokeStatic( | |
| 928 helper, | |
| 929 selector, | |
| 930 <ir.Primitive>[allocation, typeInformation], | |
| 931 sourceInformationBuilder.buildGeneric(node)); | |
| 932 } | |
| 933 | |
| 934 ir.Primitive refinement = irBuilder.addPrimitive( | |
| 935 new ir.Refinement(allocation, typeMaskSystem.arrayType)); | |
| 936 | |
| 937 irBuilder.buildReturn( | |
| 938 value: refinement, | |
| 939 sourceInformation: | |
| 940 sourceInformationBuilder.buildImplicitReturn(element)); | |
| 941 } else { | |
| 942 visit(node.body); | |
| 943 } | |
| 944 return irBuilder.makeFunctionDefinition( | |
| 945 sourceInformationBuilder.buildVariableDeclaration()); | |
| 946 } | |
| 947 | |
| 948 /// Builds the IR for creating an instance of the closure class corresponding | |
| 949 /// to the given nested function. | |
| 950 closure.ClosureClassElement makeSubFunction(ast.FunctionExpression node) { | |
| 951 closure.ClosureClassMap innerMap = | |
| 952 compiler.closureToClassMapper.getMappingForNestedFunction(node); | |
| 953 closure.ClosureClassElement closureClass = innerMap.closureClassElement; | |
| 954 return closureClass; | |
| 955 } | |
| 956 | |
| 957 ir.Primitive visitFunctionExpression(ast.FunctionExpression node) { | |
| 958 return irBuilder.buildFunctionExpression( | |
| 959 makeSubFunction(node), sourceInformationBuilder.buildCreate(node)); | |
| 960 } | |
| 961 | |
| 962 visitFunctionDeclaration(ast.FunctionDeclaration node) { | |
| 963 LocalFunctionElement element = elements[node.function]; | |
| 964 Object inner = makeSubFunction(node.function); | |
| 965 irBuilder.declareLocalFunction( | |
| 966 element, inner, sourceInformationBuilder.buildCreate(node.function)); | |
| 967 } | |
| 968 | |
| 969 // ## Statements ## | |
| 970 visitBlock(ast.Block node) { | |
| 971 irBuilder.buildBlock(node.statements.nodes, build); | |
| 972 } | |
| 973 | |
| 974 ir.Primitive visitBreakStatement(ast.BreakStatement node) { | |
| 975 if (!irBuilder.buildBreak(elements.getTargetOf(node))) { | |
| 976 reporter.internalError(node, "'break' target not found"); | |
| 977 } | |
| 978 return null; | |
| 979 } | |
| 980 | |
| 981 ir.Primitive visitContinueStatement(ast.ContinueStatement node) { | |
| 982 if (!irBuilder.buildContinue(elements.getTargetOf(node))) { | |
| 983 reporter.internalError(node, "'continue' target not found"); | |
| 984 } | |
| 985 return null; | |
| 986 } | |
| 987 | |
| 988 // Build(EmptyStatement, C) = C | |
| 989 ir.Primitive visitEmptyStatement(ast.EmptyStatement node) { | |
| 990 assert(irBuilder.isOpen); | |
| 991 return null; | |
| 992 } | |
| 993 | |
| 994 // Build(ExpressionStatement(e), C) = C' | |
| 995 // where (C', _) = Build(e, C) | |
| 996 ir.Primitive visitExpressionStatement(ast.ExpressionStatement node) { | |
| 997 assert(irBuilder.isOpen); | |
| 998 if (node.expression is ast.Throw) { | |
| 999 // Throw expressions that occur as statements are translated differently | |
| 1000 // from ones that occur as subexpressions. This is achieved by peeking | |
| 1001 // at statement-level expressions here. | |
| 1002 irBuilder.buildThrow(visit(node.expression)); | |
| 1003 } else { | |
| 1004 visit(node.expression); | |
| 1005 } | |
| 1006 return null; | |
| 1007 } | |
| 1008 | |
| 1009 ir.Primitive visitRethrow(ast.Rethrow node) { | |
| 1010 assert(irBuilder.isOpen); | |
| 1011 irBuilder.buildRethrow(); | |
| 1012 return null; | |
| 1013 } | |
| 1014 | |
| 1015 /// Construct a method that executes the forwarding call to the target | |
| 1016 /// constructor. This is only required, if the forwarding factory | |
| 1017 /// constructor can potentially be the target of a reflective call, because | |
| 1018 /// the builder shortcuts calls to redirecting factories at the call site | |
| 1019 /// (see [handleConstructorInvoke]). | |
| 1020 visitRedirectingFactoryBody(ast.RedirectingFactoryBody node) { | |
| 1021 ConstructorElement targetConstructor = | |
| 1022 elements.getRedirectingTargetConstructor(node).implementation; | |
| 1023 ConstructorElement redirectingConstructor = | |
| 1024 irBuilder.state.currentElement.implementation; | |
| 1025 List<ir.Primitive> arguments = <ir.Primitive>[]; | |
| 1026 FunctionSignature redirectingSignature = | |
| 1027 redirectingConstructor.functionSignature; | |
| 1028 List<String> namedParameters = <String>[]; | |
| 1029 redirectingSignature.forEachParameter((ParameterElement parameter) { | |
| 1030 arguments.add(irBuilder.environment.lookup(parameter)); | |
| 1031 if (parameter.isNamed) { | |
| 1032 namedParameters.add(parameter.name); | |
| 1033 } | |
| 1034 }); | |
| 1035 ClassElement cls = redirectingConstructor.enclosingClass; | |
| 1036 InterfaceType targetType = | |
| 1037 redirectingConstructor.computeEffectiveTargetType(cls.thisType); | |
| 1038 CallStructure callStructure = | |
| 1039 new CallStructure(redirectingSignature.parameterCount, namedParameters); | |
| 1040 callStructure = | |
| 1041 normalizeStaticArguments(callStructure, targetConstructor, arguments); | |
| 1042 ir.Primitive instance = irBuilder.buildConstructorInvocation( | |
| 1043 targetConstructor, | |
| 1044 callStructure, | |
| 1045 targetType, | |
| 1046 arguments, | |
| 1047 sourceInformationBuilder.buildNew(node)); | |
| 1048 irBuilder.buildReturn( | |
| 1049 value: instance, | |
| 1050 sourceInformation: sourceInformationBuilder.buildReturn(node)); | |
| 1051 } | |
| 1052 | |
| 1053 visitFor(ast.For node) { | |
| 1054 List<LocalElement> loopVariables = <LocalElement>[]; | |
| 1055 if (node.initializer is ast.VariableDefinitions) { | |
| 1056 ast.VariableDefinitions definitions = node.initializer; | |
| 1057 for (ast.Node node in definitions.definitions.nodes) { | |
| 1058 LocalElement loopVariable = elements[node]; | |
| 1059 loopVariables.add(loopVariable); | |
| 1060 } | |
| 1061 } | |
| 1062 | |
| 1063 JumpTarget target = elements.getTargetDefinition(node); | |
| 1064 irBuilder.buildFor( | |
| 1065 buildInitializer: subbuild(node.initializer), | |
| 1066 buildCondition: subbuild(node.condition), | |
| 1067 buildBody: subbuild(node.body), | |
| 1068 buildUpdate: subbuildSequence(node.update), | |
| 1069 closureScope: getClosureScopeForNode(node), | |
| 1070 loopVariables: loopVariables, | |
| 1071 target: target); | |
| 1072 } | |
| 1073 | |
| 1074 visitIf(ast.If node) { | |
| 1075 irBuilder.buildIf(build(node.condition), subbuild(node.thenPart), | |
| 1076 subbuild(node.elsePart), sourceInformationBuilder.buildIf(node)); | |
| 1077 } | |
| 1078 | |
| 1079 visitLabeledStatement(ast.LabeledStatement node) { | |
| 1080 ast.Statement body = node.statement; | |
| 1081 if (body is ast.Loop) { | |
| 1082 visit(body); | |
| 1083 } else { | |
| 1084 JumpTarget target = elements.getTargetDefinition(body); | |
| 1085 irBuilder.buildLabeledStatement( | |
| 1086 buildBody: subbuild(body), target: target); | |
| 1087 } | |
| 1088 } | |
| 1089 | |
| 1090 visitDoWhile(ast.DoWhile node) { | |
| 1091 irBuilder.buildDoWhile( | |
| 1092 buildBody: subbuild(node.body), | |
| 1093 buildCondition: subbuild(node.condition), | |
| 1094 target: elements.getTargetDefinition(node), | |
| 1095 closureScope: getClosureScopeForNode(node)); | |
| 1096 } | |
| 1097 | |
| 1098 visitWhile(ast.While node) { | |
| 1099 irBuilder.buildWhile( | |
| 1100 buildCondition: subbuild(node.condition), | |
| 1101 buildBody: subbuild(node.body), | |
| 1102 target: elements.getTargetDefinition(node), | |
| 1103 closureScope: getClosureScopeForNode(node)); | |
| 1104 } | |
| 1105 | |
| 1106 visitAsyncForIn(ast.AsyncForIn node) { | |
| 1107 // Translate await for into a loop over a StreamIterator. The source | |
| 1108 // statement: | |
| 1109 // | |
| 1110 // await for (<decl> in <stream>) <body> | |
| 1111 // | |
| 1112 // is translated as if it were: | |
| 1113 // | |
| 1114 // var iterator = new StreamIterator(<stream>); | |
| 1115 // try { | |
| 1116 // while (await iterator.hasNext()) { | |
| 1117 // <decl> = await iterator.current; | |
| 1118 // <body> | |
| 1119 // } | |
| 1120 // } finally { | |
| 1121 // await iterator.cancel(); | |
| 1122 // } | |
| 1123 ir.Primitive stream = visit(node.expression); | |
| 1124 ir.Primitive dummyTypeArgument = irBuilder.buildNullConstant(); | |
| 1125 ConstructorElement constructor = helpers.streamIteratorConstructor; | |
| 1126 ir.Primitive iterator = irBuilder.addPrimitive(new ir.InvokeConstructor( | |
| 1127 constructor.enclosingClass.thisType, | |
| 1128 constructor, | |
| 1129 new Selector.callConstructor(constructor.memberName, 1), | |
| 1130 <ir.Primitive>[stream, dummyTypeArgument], | |
| 1131 sourceInformationBuilder.buildGeneric(node))); | |
| 1132 | |
| 1133 buildTryBody(IrBuilder builder) { | |
| 1134 ir.Node buildLoopCondition(IrBuilder builder) { | |
| 1135 ir.Primitive moveNext = builder.buildDynamicInvocation( | |
| 1136 iterator, | |
| 1137 Selectors.moveNext, | |
| 1138 elements.getMoveNextTypeMask(node), | |
| 1139 <ir.Primitive>[], | |
| 1140 sourceInformationBuilder.buildForInMoveNext(node)); | |
| 1141 return builder.addPrimitive(new ir.Await(moveNext)); | |
| 1142 } | |
| 1143 | |
| 1144 ir.Node buildLoopBody(IrBuilder builder) { | |
| 1145 return withBuilder(builder, () { | |
| 1146 ir.Primitive current = irBuilder.buildDynamicInvocation( | |
| 1147 iterator, | |
| 1148 Selectors.current, | |
| 1149 elements.getCurrentTypeMask(node), | |
| 1150 <ir.Primitive>[], | |
| 1151 sourceInformationBuilder.buildForInCurrent(node)); | |
| 1152 Element variable = elements.getForInVariable(node); | |
| 1153 SourceInformation sourceInformation = | |
| 1154 sourceInformationBuilder.buildForInSet(node); | |
| 1155 if (Elements.isLocal(variable)) { | |
| 1156 if (node.declaredIdentifier.asVariableDefinitions() != null) { | |
| 1157 irBuilder.declareLocalVariable(variable); | |
| 1158 } | |
| 1159 irBuilder.buildLocalVariableSet( | |
| 1160 variable, current, sourceInformation); | |
| 1161 } else if (Elements.isError(variable) || | |
| 1162 Elements.isMalformed(variable)) { | |
| 1163 Selector selector = | |
| 1164 new Selector.setter(new Name(variable.name, variable.library)); | |
| 1165 List<ir.Primitive> args = <ir.Primitive>[current]; | |
| 1166 // Note the comparison below. It can be the case that an element | |
| 1167 // isError and isMalformed. | |
| 1168 if (Elements.isError(variable)) { | |
| 1169 irBuilder.buildStaticNoSuchMethod( | |
| 1170 selector, args, sourceInformation); | |
| 1171 } else { | |
| 1172 irBuilder.buildErroneousInvocation( | |
| 1173 variable, selector, args, sourceInformation); | |
| 1174 } | |
| 1175 } else if (Elements.isStaticOrTopLevel(variable)) { | |
| 1176 if (variable.isField) { | |
| 1177 irBuilder.addPrimitive(new ir.SetStatic(variable, current)); | |
| 1178 } else { | |
| 1179 irBuilder.buildStaticSetterSet( | |
| 1180 variable, current, sourceInformation); | |
| 1181 } | |
| 1182 } else { | |
| 1183 ir.Primitive receiver = irBuilder.buildThis(); | |
| 1184 ast.Node identifier = node.declaredIdentifier; | |
| 1185 irBuilder.buildDynamicSet( | |
| 1186 receiver, | |
| 1187 elements.getSelector(identifier), | |
| 1188 elements.getTypeMask(identifier), | |
| 1189 current, | |
| 1190 sourceInformation); | |
| 1191 } | |
| 1192 visit(node.body); | |
| 1193 }); | |
| 1194 } | |
| 1195 | |
| 1196 builder.buildWhile( | |
| 1197 buildCondition: buildLoopCondition, | |
| 1198 buildBody: buildLoopBody, | |
| 1199 target: elements.getTargetDefinition(node), | |
| 1200 closureScope: getClosureScopeForNode(node)); | |
| 1201 } | |
| 1202 | |
| 1203 ir.Node buildFinallyBody(IrBuilder builder) { | |
| 1204 ir.Primitive cancellation = builder.buildDynamicInvocation( | |
| 1205 iterator, | |
| 1206 Selectors.cancel, | |
| 1207 backend.dynamicType, | |
| 1208 <ir.Primitive>[], | |
| 1209 sourceInformationBuilder.buildGeneric(node)); | |
| 1210 return builder.addPrimitive(new ir.Await(cancellation)); | |
| 1211 } | |
| 1212 | |
| 1213 irBuilder.buildTryFinally( | |
| 1214 new TryStatementInfo(), buildTryBody, buildFinallyBody); | |
| 1215 } | |
| 1216 | |
| 1217 visitAwait(ast.Await node) { | |
| 1218 assert(irBuilder.isOpen); | |
| 1219 ir.Primitive value = visit(node.expression); | |
| 1220 return irBuilder.addPrimitive(new ir.Await(value)); | |
| 1221 } | |
| 1222 | |
| 1223 visitYield(ast.Yield node) { | |
| 1224 assert(irBuilder.isOpen); | |
| 1225 ir.Primitive value = visit(node.expression); | |
| 1226 return irBuilder.addPrimitive(new ir.Yield(value, node.hasStar)); | |
| 1227 } | |
| 1228 | |
| 1229 visitSyncForIn(ast.SyncForIn node) { | |
| 1230 // [node.declaredIdentifier] can be either an [ast.VariableDefinitions] | |
| 1231 // (defining a new local variable) or a send designating some existing | |
| 1232 // variable. | |
| 1233 ast.Node identifier = node.declaredIdentifier; | |
| 1234 ast.VariableDefinitions variableDeclaration = | |
| 1235 identifier.asVariableDefinitions(); | |
| 1236 Element variableElement = elements.getForInVariable(node); | |
| 1237 Selector selector = elements.getSelector(identifier); | |
| 1238 | |
| 1239 irBuilder.buildForIn( | |
| 1240 buildExpression: subbuild(node.expression), | |
| 1241 buildVariableDeclaration: subbuild(variableDeclaration), | |
| 1242 variableElement: variableElement, | |
| 1243 variableSelector: selector, | |
| 1244 variableMask: elements.getTypeMask(identifier), | |
| 1245 variableSetSourceInformation: | |
| 1246 sourceInformationBuilder.buildForInSet(node), | |
| 1247 currentMask: elements.getCurrentTypeMask(node), | |
| 1248 currentSourceInformation: | |
| 1249 sourceInformationBuilder.buildForInCurrent(node), | |
| 1250 moveNextMask: elements.getMoveNextTypeMask(node), | |
| 1251 moveNextSourceInformation: | |
| 1252 sourceInformationBuilder.buildForInMoveNext(node), | |
| 1253 iteratorMask: elements.getIteratorTypeMask(node), | |
| 1254 iteratorSourceInformation: | |
| 1255 sourceInformationBuilder.buildForInIterator(node), | |
| 1256 buildBody: subbuild(node.body), | |
| 1257 target: elements.getTargetDefinition(node), | |
| 1258 closureScope: getClosureScopeForNode(node)); | |
| 1259 } | |
| 1260 | |
| 1261 /// If compiling with trusted type annotations, assumes that [value] is | |
| 1262 /// now known to be `null` or an instance of [type]. | |
| 1263 /// | |
| 1264 /// This is also where we should add type checks in checked mode, but this | |
| 1265 /// is not supported yet. | |
| 1266 ir.Primitive checkType(ir.Primitive value, DartType dartType) { | |
| 1267 if (!compiler.options.trustTypeAnnotations) return value; | |
| 1268 TypeMask type = typeMaskSystem.subtypesOf(dartType).nullable(); | |
| 1269 return irBuilder.addPrimitive(new ir.Refinement(value, type)); | |
| 1270 } | |
| 1271 | |
| 1272 ir.Primitive checkTypeVsElement(ir.Primitive value, TypedElement element) { | |
| 1273 return checkType(value, element.type); | |
| 1274 } | |
| 1275 | |
| 1276 ir.Primitive visitVariableDefinitions(ast.VariableDefinitions node) { | |
| 1277 assert(irBuilder.isOpen); | |
| 1278 for (ast.Node definition in node.definitions.nodes) { | |
| 1279 Element element = elements[definition]; | |
| 1280 ir.Primitive initialValue; | |
| 1281 // Definitions are either SendSets if there is an initializer, or | |
| 1282 // Identifiers if there is no initializer. | |
| 1283 if (definition is ast.SendSet) { | |
| 1284 assert(!definition.arguments.isEmpty); | |
| 1285 assert(definition.arguments.tail.isEmpty); | |
| 1286 initialValue = visit(definition.arguments.head); | |
| 1287 initialValue = checkTypeVsElement(initialValue, element); | |
| 1288 } else { | |
| 1289 assert(definition is ast.Identifier); | |
| 1290 } | |
| 1291 irBuilder.declareLocalVariable(element, initialValue: initialValue); | |
| 1292 } | |
| 1293 return null; | |
| 1294 } | |
| 1295 | |
| 1296 static final RegExp nativeRedirectionRegExp = | |
| 1297 new RegExp(r'^[a-zA-Z][a-zA-Z_$0-9]*$'); | |
| 1298 | |
| 1299 // Build(Return(e), C) = C'[InvokeContinuation(return, x)] | |
| 1300 // where (C', x) = Build(e, C) | |
| 1301 // | |
| 1302 // Return without a subexpression is translated as if it were return null. | |
| 1303 visitReturn(ast.Return node) { | |
| 1304 assert(irBuilder.isOpen); | |
| 1305 SourceInformation source = sourceInformationBuilder.buildReturn(node); | |
| 1306 if (node.beginToken.value == 'native') { | |
| 1307 FunctionElement function = irBuilder.state.currentElement; | |
| 1308 assert(backend.isNative(function)); | |
| 1309 ast.Node nativeBody = node.expression; | |
| 1310 if (nativeBody != null) { | |
| 1311 ast.LiteralString jsCode = nativeBody.asLiteralString(); | |
| 1312 String javaScriptCode = jsCode.dartString.slowToString(); | |
| 1313 assert(invariant( | |
| 1314 nativeBody, !nativeRedirectionRegExp.hasMatch(javaScriptCode), | |
| 1315 message: "Deprecated syntax, use @JSName('name') instead.")); | |
| 1316 assert(invariant( | |
| 1317 nativeBody, function.functionSignature.parameterCount == 0, | |
| 1318 message: 'native "..." syntax is restricted to ' | |
| 1319 'functions with zero parameters.')); | |
| 1320 irBuilder.buildNativeFunctionBody(function, javaScriptCode, | |
| 1321 sourceInformationBuilder.buildForeignCode(node)); | |
| 1322 } else { | |
| 1323 String name = backend.nativeData.getFixedBackendName(function); | |
| 1324 irBuilder.buildRedirectingNativeFunctionBody(function, name, source); | |
| 1325 } | |
| 1326 } else { | |
| 1327 irBuilder.buildReturn( | |
| 1328 value: build(node.expression), sourceInformation: source); | |
| 1329 } | |
| 1330 } | |
| 1331 | |
| 1332 visitSwitchStatement(ast.SwitchStatement node) { | |
| 1333 // Dart switch cases can be labeled and be the target of continue from | |
| 1334 // within the switch. Such cases are 'recursive'. If there are any | |
| 1335 // recursive cases, we implement the switch using a pair of switches with | |
| 1336 // the second one switching over a state variable in a loop. The first | |
| 1337 // switch contains the non-recursive cases, and the second switch contains | |
| 1338 // the recursive ones. | |
| 1339 // | |
| 1340 // For example, for the Dart switch: | |
| 1341 // | |
| 1342 // switch (E) { | |
| 1343 // case 0: | |
| 1344 // BODY0; | |
| 1345 // break; | |
| 1346 // LABEL0: case 1: | |
| 1347 // BODY1; | |
| 1348 // break; | |
| 1349 // case 2: | |
| 1350 // BODY2; | |
| 1351 // continue LABEL1; | |
| 1352 // LABEL1: case 3: | |
| 1353 // BODY3; | |
| 1354 // continue LABEL0; | |
| 1355 // default: | |
| 1356 // BODY4; | |
| 1357 // } | |
| 1358 // | |
| 1359 // We translate it as if it were the JavaScript: | |
| 1360 // | |
| 1361 // var state = -1; | |
| 1362 // switch (E) { | |
| 1363 // case 0: | |
| 1364 // BODY0; | |
| 1365 // break; | |
| 1366 // case 1: | |
| 1367 // state = 0; // Recursive, label ID = 0. | |
| 1368 // break; | |
| 1369 // case 2: | |
| 1370 // BODY2; | |
| 1371 // state = 1; // Continue to label ID = 1. | |
| 1372 // break; | |
| 1373 // case 3: | |
| 1374 // state = 1; // Recursive, label ID = 1. | |
| 1375 // break; | |
| 1376 // default: | |
| 1377 // BODY4; | |
| 1378 // } | |
| 1379 // L: while (state != -1) { | |
| 1380 // case 0: | |
| 1381 // BODY1; | |
| 1382 // break L; // Break from switch becomes break from loop. | |
| 1383 // case 1: | |
| 1384 // BODY2; | |
| 1385 // state = 0; // Continue to label ID = 0. | |
| 1386 // break; | |
| 1387 // } | |
| 1388 assert(irBuilder.isOpen); | |
| 1389 // Preprocess: compute a list of cases that are the target of continue. | |
| 1390 // These are the so-called 'recursive' cases. | |
| 1391 List<JumpTarget> continueTargets = <JumpTarget>[]; | |
| 1392 List<ast.Node> switchCases = node.cases.nodes.toList(); | |
| 1393 for (ast.SwitchCase switchCase in switchCases) { | |
| 1394 for (ast.Node labelOrCase in switchCase.labelsAndCases) { | |
| 1395 if (labelOrCase is ast.Label) { | |
| 1396 LabelDefinition definition = elements.getLabelDefinition(labelOrCase); | |
| 1397 if (definition != null && definition.isContinueTarget) { | |
| 1398 continueTargets.add(definition.target); | |
| 1399 } | |
| 1400 } | |
| 1401 } | |
| 1402 } | |
| 1403 | |
| 1404 // If any cases are continue targets, use an anonymous local value to | |
| 1405 // implement a state machine. The initial value is -1. | |
| 1406 ir.Primitive initial; | |
| 1407 int stateIndex; | |
| 1408 if (continueTargets.isNotEmpty) { | |
| 1409 initial = irBuilder.buildIntegerConstant(-1); | |
| 1410 stateIndex = irBuilder.environment.length; | |
| 1411 irBuilder.environment.extend(null, initial); | |
| 1412 } | |
| 1413 | |
| 1414 // Use a simple switch for the non-recursive cases. A break will go to the | |
| 1415 // join-point after the switch. A continue to a labeled case will assign | |
| 1416 // to the state variable and go to the join-point. | |
| 1417 ir.Primitive value = visit(node.expression); | |
| 1418 JumpCollector join = new ForwardJumpCollector(irBuilder.environment, | |
| 1419 target: elements.getTargetDefinition(node)); | |
| 1420 irBuilder.state.breakCollectors.add(join); | |
| 1421 for (int i = 0; i < continueTargets.length; ++i) { | |
| 1422 // The state value is i, the case's position in the list of recursive | |
| 1423 // cases. | |
| 1424 irBuilder.state.continueCollectors | |
| 1425 .add(new GotoJumpCollector(continueTargets[i], stateIndex, i, join)); | |
| 1426 } | |
| 1427 | |
| 1428 // For each non-default case use a pair of functions, one to translate the | |
| 1429 // condition and one to translate the body. For the default case use a | |
| 1430 // function to translate the body. Use continueTargetIterator as a pointer | |
| 1431 // to the next recursive case. | |
| 1432 Iterator<JumpTarget> continueTargetIterator = continueTargets.iterator; | |
| 1433 continueTargetIterator.moveNext(); | |
| 1434 List<SwitchCaseInfo> cases = <SwitchCaseInfo>[]; | |
| 1435 SubbuildFunction buildDefaultBody; | |
| 1436 for (ast.SwitchCase switchCase in switchCases) { | |
| 1437 JumpTarget nextContinueTarget = continueTargetIterator.current; | |
| 1438 if (switchCase.isDefaultCase) { | |
| 1439 if (nextContinueTarget != null && | |
| 1440 switchCase == nextContinueTarget.statement) { | |
| 1441 // In this simple switch, recursive cases are as if they immediately | |
| 1442 // continued to themselves. | |
| 1443 buildDefaultBody = nested(() { | |
| 1444 irBuilder.buildContinue(nextContinueTarget); | |
| 1445 }); | |
| 1446 continueTargetIterator.moveNext(); | |
| 1447 } else { | |
| 1448 // Non-recursive cases consist of the translation of the body. | |
| 1449 // For the default case, there is implicitly a break if control | |
| 1450 // flow reaches the end. | |
| 1451 buildDefaultBody = nested(() { | |
| 1452 irBuilder.buildSequence(switchCase.statements, visit); | |
| 1453 if (irBuilder.isOpen) irBuilder.jumpTo(join); | |
| 1454 }); | |
| 1455 } | |
| 1456 continue; | |
| 1457 } | |
| 1458 | |
| 1459 ir.Primitive buildCondition(IrBuilder builder) { | |
| 1460 // There can be multiple cases sharing the same body, because empty | |
| 1461 // cases are allowed to fall through to the next one. Each case is | |
| 1462 // a comparison, build a short-circuited disjunction of all of them. | |
| 1463 return withBuilder(builder, () { | |
| 1464 ir.Primitive condition; | |
| 1465 for (ast.Node labelOrCase in switchCase.labelsAndCases) { | |
| 1466 if (labelOrCase is ast.CaseMatch) { | |
| 1467 ir.Primitive buildComparison() { | |
| 1468 ir.Primitive constant = | |
| 1469 translateConstant(labelOrCase.expression); | |
| 1470 return irBuilder.buildIdentical(value, constant); | |
| 1471 } | |
| 1472 | |
| 1473 if (condition == null) { | |
| 1474 condition = buildComparison(); | |
| 1475 } else { | |
| 1476 condition = irBuilder.buildLogicalOperator( | |
| 1477 condition, | |
| 1478 nested(buildComparison), | |
| 1479 sourceInformationBuilder.buildSwitchCase(switchCase), | |
| 1480 isLazyOr: true); | |
| 1481 } | |
| 1482 } | |
| 1483 } | |
| 1484 return condition; | |
| 1485 }); | |
| 1486 } | |
| 1487 | |
| 1488 SubbuildFunction buildBody; | |
| 1489 if (nextContinueTarget != null && | |
| 1490 switchCase == nextContinueTarget.statement) { | |
| 1491 // Recursive cases are as if they immediately continued to themselves. | |
| 1492 buildBody = nested(() { | |
| 1493 irBuilder.buildContinue(nextContinueTarget); | |
| 1494 }); | |
| 1495 continueTargetIterator.moveNext(); | |
| 1496 } else { | |
| 1497 // Non-recursive cases consist of the translation of the body. It is a | |
| 1498 // runtime error if control-flow reaches the end of the body of any but | |
| 1499 // the last case. | |
| 1500 buildBody = (IrBuilder builder) { | |
| 1501 withBuilder(builder, () { | |
| 1502 irBuilder.buildSequence(switchCase.statements, visit); | |
| 1503 if (irBuilder.isOpen) { | |
| 1504 if (switchCase == switchCases.last) { | |
| 1505 irBuilder.jumpTo(join); | |
| 1506 } else { | |
| 1507 Element error = helpers.fallThroughError; | |
| 1508 ir.Primitive exception = irBuilder.buildInvokeStatic( | |
| 1509 error, | |
| 1510 new Selector.fromElement(error), | |
| 1511 <ir.Primitive>[], | |
| 1512 sourceInformationBuilder.buildGeneric(node)); | |
| 1513 irBuilder.buildThrow(exception); | |
| 1514 } | |
| 1515 } | |
| 1516 }); | |
| 1517 return null; | |
| 1518 }; | |
| 1519 } | |
| 1520 | |
| 1521 cases.add(new SwitchCaseInfo(buildCondition, buildBody, | |
| 1522 sourceInformationBuilder.buildSwitchCase(switchCase))); | |
| 1523 } | |
| 1524 | |
| 1525 irBuilder.buildSimpleSwitch(join, cases, buildDefaultBody); | |
| 1526 irBuilder.state.breakCollectors.removeLast(); | |
| 1527 irBuilder.state.continueCollectors.length -= continueTargets.length; | |
| 1528 if (continueTargets.isEmpty) return; | |
| 1529 | |
| 1530 // If there were recursive cases build a while loop whose body is a | |
| 1531 // switch containing (only) the recursive cases. The condition is | |
| 1532 // 'state != initialValue' so the loop is not taken when the state variable | |
| 1533 // has not been assigned. | |
| 1534 // | |
| 1535 // 'loop' is the join-point of the exits from the inner switch which will | |
| 1536 // perform another iteration of the loop. 'exit' is the join-point of the | |
| 1537 // breaks from the switch, outside the loop. | |
| 1538 JumpCollector loop = new ForwardJumpCollector(irBuilder.environment); | |
| 1539 JumpCollector exit = new ForwardJumpCollector(irBuilder.environment, | |
| 1540 target: elements.getTargetDefinition(node)); | |
| 1541 irBuilder.state.breakCollectors.add(exit); | |
| 1542 for (int i = 0; i < continueTargets.length; ++i) { | |
| 1543 irBuilder.state.continueCollectors | |
| 1544 .add(new GotoJumpCollector(continueTargets[i], stateIndex, i, loop)); | |
| 1545 } | |
| 1546 cases.clear(); | |
| 1547 for (int i = 0; i < continueTargets.length; ++i) { | |
| 1548 // The conditions compare to the recursive case index. | |
| 1549 ir.Primitive buildCondition(IrBuilder builder) { | |
| 1550 ir.Primitive constant = builder.buildIntegerConstant(i); | |
| 1551 return builder.buildIdentical( | |
| 1552 builder.environment.index2value[stateIndex], constant); | |
| 1553 } | |
| 1554 | |
| 1555 ir.Primitive buildBody(IrBuilder builder) { | |
| 1556 withBuilder(builder, () { | |
| 1557 ast.SwitchCase switchCase = continueTargets[i].statement; | |
| 1558 irBuilder.buildSequence(switchCase.statements, visit); | |
| 1559 if (irBuilder.isOpen) { | |
| 1560 if (switchCase == switchCases.last) { | |
| 1561 irBuilder.jumpTo(exit); | |
| 1562 } else { | |
| 1563 Element error = helpers.fallThroughError; | |
| 1564 ir.Primitive exception = irBuilder.buildInvokeStatic( | |
| 1565 error, | |
| 1566 new Selector.fromElement(error), | |
| 1567 <ir.Primitive>[], | |
| 1568 sourceInformationBuilder.buildGeneric(node)); | |
| 1569 irBuilder.buildThrow(exception); | |
| 1570 } | |
| 1571 } | |
| 1572 }); | |
| 1573 return null; | |
| 1574 } | |
| 1575 | |
| 1576 cases.add(new SwitchCaseInfo(buildCondition, buildBody, | |
| 1577 sourceInformationBuilder.buildSwitch(node))); | |
| 1578 } | |
| 1579 | |
| 1580 // A loop with a simple switch in the body. | |
| 1581 IrBuilder whileBuilder = irBuilder.makeDelimitedBuilder(); | |
| 1582 whileBuilder.buildWhile(buildCondition: (IrBuilder builder) { | |
| 1583 ir.Primitive condition = builder.buildIdentical( | |
| 1584 builder.environment.index2value[stateIndex], initial); | |
| 1585 return builder.buildNegation( | |
| 1586 condition, sourceInformationBuilder.buildSwitch(node)); | |
| 1587 }, buildBody: (IrBuilder builder) { | |
| 1588 builder.buildSimpleSwitch(loop, cases, null); | |
| 1589 }); | |
| 1590 // Jump to the exit continuation. This jump is the body of the loop exit | |
| 1591 // continuation, so the loop exit continuation can be eta-reduced. The | |
| 1592 // jump is here for simplicity because `buildWhile` does not expose the | |
| 1593 // loop's exit continuation directly and has already emitted all jumps | |
| 1594 // to it anyway. | |
| 1595 whileBuilder.jumpTo(exit); | |
| 1596 irBuilder.add(new ir.LetCont(exit.continuation, whileBuilder.root)); | |
| 1597 irBuilder.environment = exit.environment; | |
| 1598 irBuilder.environment.discard(1); // Discard the state variable. | |
| 1599 irBuilder.state.breakCollectors.removeLast(); | |
| 1600 irBuilder.state.continueCollectors.length -= continueTargets.length; | |
| 1601 } | |
| 1602 | |
| 1603 visitTryStatement(ast.TryStatement node) { | |
| 1604 List<CatchClauseInfo> catchClauseInfos = <CatchClauseInfo>[]; | |
| 1605 for (ast.CatchBlock catchClause in node.catchBlocks.nodes) { | |
| 1606 LocalVariableElement exceptionVariable; | |
| 1607 if (catchClause.exception != null) { | |
| 1608 exceptionVariable = elements[catchClause.exception]; | |
| 1609 } | |
| 1610 LocalVariableElement stackTraceVariable; | |
| 1611 if (catchClause.trace != null) { | |
| 1612 stackTraceVariable = elements[catchClause.trace]; | |
| 1613 } | |
| 1614 DartType type; | |
| 1615 if (catchClause.onKeyword != null) { | |
| 1616 type = elements.getType(catchClause.type); | |
| 1617 } | |
| 1618 catchClauseInfos.add(new CatchClauseInfo( | |
| 1619 type: type, | |
| 1620 exceptionVariable: exceptionVariable, | |
| 1621 stackTraceVariable: stackTraceVariable, | |
| 1622 buildCatchBlock: subbuild(catchClause.block), | |
| 1623 sourceInformation: sourceInformationBuilder.buildCatch(catchClause))); | |
| 1624 } | |
| 1625 | |
| 1626 assert(!node.catchBlocks.isEmpty || node.finallyBlock != null); | |
| 1627 if (!node.catchBlocks.isEmpty && node.finallyBlock != null) { | |
| 1628 // Try/catch/finally is encoded in terms of try/catch and try/finally: | |
| 1629 // | |
| 1630 // try tryBlock catch (ex, st) catchBlock finally finallyBlock | |
| 1631 // ==> | |
| 1632 // try { try tryBlock catch (ex, st) catchBlock } finally finallyBlock | |
| 1633 irBuilder.buildTryFinally(tryStatements[node.finallyBlock], | |
| 1634 (IrBuilder inner) { | |
| 1635 inner.buildTryCatch(tryStatements[node.catchBlocks], | |
| 1636 subbuild(node.tryBlock), catchClauseInfos); | |
| 1637 }, subbuild(node.finallyBlock)); | |
| 1638 } else if (!node.catchBlocks.isEmpty) { | |
| 1639 irBuilder.buildTryCatch(tryStatements[node.catchBlocks], | |
| 1640 subbuild(node.tryBlock), catchClauseInfos); | |
| 1641 } else { | |
| 1642 irBuilder.buildTryFinally(tryStatements[node.finallyBlock], | |
| 1643 subbuild(node.tryBlock), subbuild(node.finallyBlock)); | |
| 1644 } | |
| 1645 } | |
| 1646 | |
| 1647 // ## Expressions ## | |
| 1648 ir.Primitive visitConditional(ast.Conditional node) { | |
| 1649 return irBuilder.buildConditional( | |
| 1650 build(node.condition), | |
| 1651 subbuild(node.thenExpression), | |
| 1652 subbuild(node.elseExpression), | |
| 1653 sourceInformationBuilder.buildIf(node)); | |
| 1654 } | |
| 1655 | |
| 1656 // For all simple literals: | |
| 1657 // Build(Literal(c), C) = C[let val x = Constant(c) in [], x] | |
| 1658 ir.Primitive visitLiteralBool(ast.LiteralBool node) { | |
| 1659 assert(irBuilder.isOpen); | |
| 1660 return irBuilder.buildBooleanConstant(node.value); | |
| 1661 } | |
| 1662 | |
| 1663 ir.Primitive visitLiteralDouble(ast.LiteralDouble node) { | |
| 1664 assert(irBuilder.isOpen); | |
| 1665 return irBuilder.buildDoubleConstant(node.value); | |
| 1666 } | |
| 1667 | |
| 1668 ir.Primitive visitLiteralInt(ast.LiteralInt node) { | |
| 1669 assert(irBuilder.isOpen); | |
| 1670 return irBuilder.buildIntegerConstant(node.value); | |
| 1671 } | |
| 1672 | |
| 1673 ir.Primitive visitLiteralNull(ast.LiteralNull node) { | |
| 1674 assert(irBuilder.isOpen); | |
| 1675 return irBuilder.buildNullConstant(); | |
| 1676 } | |
| 1677 | |
| 1678 ir.Primitive visitLiteralString(ast.LiteralString node) { | |
| 1679 assert(irBuilder.isOpen); | |
| 1680 return irBuilder.buildDartStringConstant(node.dartString); | |
| 1681 } | |
| 1682 | |
| 1683 ConstantValue getConstantForNode(ast.Node node) { | |
| 1684 return irBuilder.state.constants.getConstantValueForNode(node, elements); | |
| 1685 } | |
| 1686 | |
| 1687 ConstantValue getConstantForVariable(VariableElement element) { | |
| 1688 ConstantExpression constant = element.constant; | |
| 1689 if (constant != null) { | |
| 1690 return irBuilder.state.constants.getConstantValue(constant); | |
| 1691 } | |
| 1692 return null; | |
| 1693 } | |
| 1694 | |
| 1695 ir.Primitive buildConstantExpression( | |
| 1696 ConstantExpression expression, SourceInformation sourceInformation) { | |
| 1697 return irBuilder.buildConstant( | |
| 1698 irBuilder.state.constants.getConstantValue(expression), | |
| 1699 sourceInformation: sourceInformation); | |
| 1700 } | |
| 1701 | |
| 1702 /// Returns the allocation site-specific type for a given allocation. | |
| 1703 /// | |
| 1704 /// Currently, it is an error to call this with anything that is not the | |
| 1705 /// allocation site for a List object (a literal list or a call to one | |
| 1706 /// of the List constructors). | |
| 1707 TypeMask getAllocationSiteType(ast.Node node) { | |
| 1708 return compiler.typesTask | |
| 1709 .getGuaranteedTypeOfNode(elements.analyzedElement, node); | |
| 1710 } | |
| 1711 | |
| 1712 ir.Primitive visitLiteralList(ast.LiteralList node) { | |
| 1713 if (node.isConst) { | |
| 1714 return translateConstant(node); | |
| 1715 } | |
| 1716 List<ir.Primitive> values = node.elements.nodes.mapToList(visit); | |
| 1717 InterfaceType type = elements.getType(node); | |
| 1718 TypeMask allocationSiteType = getAllocationSiteType(node); | |
| 1719 // TODO(sra): In checked mode, the elements must be checked as though | |
| 1720 // operator[]= is called. | |
| 1721 ir.Primitive list = irBuilder.buildListLiteral(type, values, | |
| 1722 allocationSiteType: allocationSiteType); | |
| 1723 if (type.treatAsRaw) return list; | |
| 1724 // Call JSArray<E>.typed(allocation) to install the reified type. | |
| 1725 ConstructorElement constructor = helpers.jsArrayTypedConstructor; | |
| 1726 ir.Primitive tagged = irBuilder.buildConstructorInvocation( | |
| 1727 constructor.effectiveTarget, | |
| 1728 CallStructure.ONE_ARG, | |
| 1729 constructor.computeEffectiveTargetType(type), | |
| 1730 <ir.Primitive>[list], | |
| 1731 sourceInformationBuilder.buildNew(node)); | |
| 1732 | |
| 1733 if (allocationSiteType == null) return tagged; | |
| 1734 | |
| 1735 return irBuilder | |
| 1736 .addPrimitive(new ir.Refinement(tagged, allocationSiteType)); | |
| 1737 } | |
| 1738 | |
| 1739 ir.Primitive visitLiteralMap(ast.LiteralMap node) { | |
| 1740 assert(irBuilder.isOpen); | |
| 1741 if (node.isConst) { | |
| 1742 return translateConstant(node); | |
| 1743 } | |
| 1744 | |
| 1745 InterfaceType type = elements.getType(node); | |
| 1746 | |
| 1747 if (node.entries.nodes.isEmpty) { | |
| 1748 if (type.treatAsRaw) { | |
| 1749 return irBuilder.buildStaticFunctionInvocation( | |
| 1750 helpers.mapLiteralUntypedEmptyMaker, | |
| 1751 <ir.Primitive>[], | |
| 1752 sourceInformationBuilder.buildNew(node)); | |
| 1753 } else { | |
| 1754 ConstructorElement constructor = helpers.mapLiteralConstructorEmpty; | |
| 1755 return irBuilder.buildConstructorInvocation( | |
| 1756 constructor.effectiveTarget, | |
| 1757 CallStructure.NO_ARGS, | |
| 1758 constructor.computeEffectiveTargetType(type), | |
| 1759 <ir.Primitive>[], | |
| 1760 sourceInformationBuilder.buildNew(node)); | |
| 1761 } | |
| 1762 } | |
| 1763 | |
| 1764 List<ir.Primitive> keysAndValues = <ir.Primitive>[]; | |
| 1765 for (ast.LiteralMapEntry entry in node.entries.nodes.toList()) { | |
| 1766 keysAndValues.add(visit(entry.key)); | |
| 1767 keysAndValues.add(visit(entry.value)); | |
| 1768 } | |
| 1769 ir.Primitive keysAndValuesList = | |
| 1770 irBuilder.buildListLiteral(null, keysAndValues); | |
| 1771 | |
| 1772 if (type.treatAsRaw) { | |
| 1773 return irBuilder.buildStaticFunctionInvocation( | |
| 1774 helpers.mapLiteralUntypedMaker, | |
| 1775 <ir.Primitive>[keysAndValuesList], | |
| 1776 sourceInformationBuilder.buildNew(node)); | |
| 1777 } else { | |
| 1778 ConstructorElement constructor = helpers.mapLiteralConstructor; | |
| 1779 return irBuilder.buildConstructorInvocation( | |
| 1780 constructor.effectiveTarget, | |
| 1781 CallStructure.ONE_ARG, | |
| 1782 constructor.computeEffectiveTargetType(type), | |
| 1783 <ir.Primitive>[keysAndValuesList], | |
| 1784 sourceInformationBuilder.buildNew(node)); | |
| 1785 } | |
| 1786 } | |
| 1787 | |
| 1788 ir.Primitive visitLiteralSymbol(ast.LiteralSymbol node) { | |
| 1789 assert(irBuilder.isOpen); | |
| 1790 return translateConstant(node); | |
| 1791 } | |
| 1792 | |
| 1793 ir.Primitive visitParenthesizedExpression(ast.ParenthesizedExpression node) { | |
| 1794 assert(irBuilder.isOpen); | |
| 1795 return visit(node.expression); | |
| 1796 } | |
| 1797 | |
| 1798 // Stores the result of visiting a CascadeReceiver, so we can return it from | |
| 1799 // its enclosing Cascade. | |
| 1800 ir.Primitive _currentCascadeReceiver; | |
| 1801 | |
| 1802 ir.Primitive visitCascadeReceiver(ast.CascadeReceiver node) { | |
| 1803 assert(irBuilder.isOpen); | |
| 1804 return _currentCascadeReceiver = visit(node.expression); | |
| 1805 } | |
| 1806 | |
| 1807 ir.Primitive visitCascade(ast.Cascade node) { | |
| 1808 assert(irBuilder.isOpen); | |
| 1809 var oldCascadeReceiver = _currentCascadeReceiver; | |
| 1810 // Throw away the result of visiting the expression. | |
| 1811 // Instead we return the result of visiting the CascadeReceiver. | |
| 1812 visit(node.expression); | |
| 1813 ir.Primitive receiver = _currentCascadeReceiver; | |
| 1814 _currentCascadeReceiver = oldCascadeReceiver; | |
| 1815 return receiver; | |
| 1816 } | |
| 1817 | |
| 1818 @override | |
| 1819 ir.Primitive visitAssert(ast.Assert node) { | |
| 1820 assert(irBuilder.isOpen); | |
| 1821 if (compiler.options.enableUserAssertions) { | |
| 1822 return giveup(node, 'assert in checked mode not implemented'); | |
| 1823 } else { | |
| 1824 // The call to assert and its argument expression must be ignored | |
| 1825 // in production mode. | |
| 1826 // Assertions can only occur in expression statements, so no value needs | |
| 1827 // to be returned. | |
| 1828 return null; | |
| 1829 } | |
| 1830 } | |
| 1831 | |
| 1832 // ## Sends ## | |
| 1833 @override | |
| 1834 void previsitDeferredAccess(ast.Send node, PrefixElement prefix, _) { | |
| 1835 if (prefix != null) buildCheckDeferredIsLoaded(prefix, node); | |
| 1836 } | |
| 1837 | |
| 1838 /// Create a call to check that a deferred import has already been loaded. | |
| 1839 ir.Primitive buildCheckDeferredIsLoaded(PrefixElement prefix, ast.Send node) { | |
| 1840 SourceInformation sourceInformation = | |
| 1841 sourceInformationBuilder.buildCall(node, node.selector); | |
| 1842 ir.Primitive name = irBuilder.buildStringConstant( | |
| 1843 compiler.deferredLoadTask.getImportDeferName(node, prefix)); | |
| 1844 ir.Primitive uri = | |
| 1845 irBuilder.buildStringConstant('${prefix.deferredImport.uri}'); | |
| 1846 return irBuilder.buildStaticFunctionInvocation( | |
| 1847 helpers.checkDeferredIsLoaded, | |
| 1848 <ir.Primitive>[name, uri], | |
| 1849 sourceInformation); | |
| 1850 } | |
| 1851 | |
| 1852 ir.Primitive visitNamedArgument(ast.NamedArgument node) { | |
| 1853 assert(irBuilder.isOpen); | |
| 1854 return visit(node.expression); | |
| 1855 } | |
| 1856 | |
| 1857 @override | |
| 1858 ir.Primitive visitExpressionInvoke(ast.Send node, ast.Node expression, | |
| 1859 ast.NodeList argumentsNode, CallStructure callStructure, _) { | |
| 1860 ir.Primitive receiver = visit(expression); | |
| 1861 List<ir.Primitive> arguments = argumentsNode.nodes.mapToList(visit); | |
| 1862 callStructure = normalizeDynamicArguments(callStructure, arguments); | |
| 1863 return irBuilder.buildCallInvocation(receiver, callStructure, arguments, | |
| 1864 sourceInformationBuilder.buildCall(node, argumentsNode)); | |
| 1865 } | |
| 1866 | |
| 1867 /// Returns `true` if [node] is a super call. | |
| 1868 // TODO(johnniwinther): Remove the need for this. | |
| 1869 bool isSuperCall(ast.Send node) { | |
| 1870 return node != null && node.receiver != null && node.receiver.isSuper(); | |
| 1871 } | |
| 1872 | |
| 1873 @override | |
| 1874 ir.Primitive handleConstantGet( | |
| 1875 ast.Node node, ConstantExpression constant, _) { | |
| 1876 return buildConstantExpression( | |
| 1877 constant, sourceInformationBuilder.buildGet(node)); | |
| 1878 } | |
| 1879 | |
| 1880 /// If [node] is null, returns this. | |
| 1881 /// Otherwise visits [node] and returns the result. | |
| 1882 ir.Primitive translateReceiver(ast.Expression node) { | |
| 1883 return node != null ? visit(node) : irBuilder.buildThis(); | |
| 1884 } | |
| 1885 | |
| 1886 @override | |
| 1887 ir.Primitive handleDynamicGet( | |
| 1888 ast.Send node, ast.Node receiver, Name name, _) { | |
| 1889 return irBuilder.buildDynamicGet( | |
| 1890 translateReceiver(receiver), | |
| 1891 new Selector.getter(name), | |
| 1892 elements.getTypeMask(node), | |
| 1893 sourceInformationBuilder.buildGet(node)); | |
| 1894 } | |
| 1895 | |
| 1896 @override | |
| 1897 ir.Primitive visitIfNotNullDynamicPropertyGet( | |
| 1898 ast.Send node, ast.Node receiver, Name name, _) { | |
| 1899 ir.Primitive target = visit(receiver); | |
| 1900 return irBuilder.buildIfNotNullSend( | |
| 1901 target, | |
| 1902 nested(() => irBuilder.buildDynamicGet( | |
| 1903 target, | |
| 1904 new Selector.getter(name), | |
| 1905 elements.getTypeMask(node), | |
| 1906 sourceInformationBuilder.buildGet(node))), | |
| 1907 sourceInformationBuilder.buildIf(node)); | |
| 1908 } | |
| 1909 | |
| 1910 @override | |
| 1911 ir.Primitive visitDynamicTypeLiteralGet( | |
| 1912 ast.Send node, ConstantExpression constant, _) { | |
| 1913 return buildConstantExpression( | |
| 1914 constant, sourceInformationBuilder.buildGet(node)); | |
| 1915 } | |
| 1916 | |
| 1917 @override | |
| 1918 ir.Primitive visitLocalVariableGet( | |
| 1919 ast.Send node, LocalVariableElement element, _) { | |
| 1920 return element.isConst | |
| 1921 ? irBuilder.buildConstant(getConstantForVariable(element), | |
| 1922 sourceInformation: sourceInformationBuilder.buildGet(node)) | |
| 1923 : irBuilder.buildLocalGet(element); | |
| 1924 } | |
| 1925 | |
| 1926 ir.Primitive handleLocalGet(ast.Send node, LocalElement element, _) { | |
| 1927 return irBuilder.buildLocalGet(element); | |
| 1928 } | |
| 1929 | |
| 1930 @override | |
| 1931 ir.Primitive handleStaticFunctionGet( | |
| 1932 ast.Send node, MethodElement function, _) { | |
| 1933 return irBuilder.addPrimitive(new ir.GetStatic(function, isFinal: true)); | |
| 1934 } | |
| 1935 | |
| 1936 @override | |
| 1937 ir.Primitive handleStaticGetterGet(ast.Send node, FunctionElement getter, _) { | |
| 1938 return buildStaticGetterGet( | |
| 1939 getter, node, sourceInformationBuilder.buildGet(node)); | |
| 1940 } | |
| 1941 | |
| 1942 /// Create a getter invocation of the static getter [getter]. This also | |
| 1943 /// handles the special case where [getter] is the `loadLibrary` | |
| 1944 /// pseudo-function on library prefixes of deferred imports. | |
| 1945 ir.Primitive buildStaticGetterGet(MethodElement getter, ast.Send node, | |
| 1946 SourceInformation sourceInformation) { | |
| 1947 if (getter.isDeferredLoaderGetter) { | |
| 1948 PrefixElement prefix = getter.enclosingElement; | |
| 1949 ir.Primitive loadId = irBuilder.buildStringConstant( | |
| 1950 compiler.deferredLoadTask.getImportDeferName(node, prefix)); | |
| 1951 return irBuilder.buildStaticFunctionInvocation( | |
| 1952 compiler.loadLibraryFunction, | |
| 1953 <ir.Primitive>[loadId], | |
| 1954 sourceInformation); | |
| 1955 } else { | |
| 1956 return irBuilder.buildStaticGetterGet(getter, sourceInformation); | |
| 1957 } | |
| 1958 } | |
| 1959 | |
| 1960 @override | |
| 1961 ir.Primitive visitSuperFieldGet(ast.Send node, FieldElement field, _) { | |
| 1962 return irBuilder.buildSuperFieldGet( | |
| 1963 field, sourceInformationBuilder.buildGet(node)); | |
| 1964 } | |
| 1965 | |
| 1966 @override | |
| 1967 ir.Primitive visitSuperGetterGet(ast.Send node, FunctionElement getter, _) { | |
| 1968 return irBuilder.buildSuperGetterGet( | |
| 1969 getter, sourceInformationBuilder.buildGet(node)); | |
| 1970 } | |
| 1971 | |
| 1972 @override | |
| 1973 ir.Primitive visitSuperMethodGet(ast.Send node, MethodElement method, _) { | |
| 1974 return irBuilder.buildSuperMethodGet( | |
| 1975 method, sourceInformationBuilder.buildGet(node)); | |
| 1976 } | |
| 1977 | |
| 1978 @override | |
| 1979 ir.Primitive visitUnresolvedSuperGet(ast.Send node, Element element, _) { | |
| 1980 return buildSuperNoSuchMethod( | |
| 1981 elements.getSelector(node), | |
| 1982 elements.getTypeMask(node), | |
| 1983 [], | |
| 1984 sourceInformationBuilder.buildGet(node)); | |
| 1985 } | |
| 1986 | |
| 1987 @override | |
| 1988 ir.Primitive visitUnresolvedSuperSet( | |
| 1989 ast.Send node, Element element, ast.Node rhs, _) { | |
| 1990 return buildSuperNoSuchMethod( | |
| 1991 elements.getSelector(node), | |
| 1992 elements.getTypeMask(node), | |
| 1993 [visit(rhs)], | |
| 1994 sourceInformationBuilder.buildAssignment(node)); | |
| 1995 } | |
| 1996 | |
| 1997 @override | |
| 1998 ir.Primitive visitThisGet(ast.Identifier node, _) { | |
| 1999 if (irBuilder.state.thisParameter == null) { | |
| 2000 // TODO(asgerf,johnniwinther): Should be in a visitInvalidThis method. | |
| 2001 // 'this' in static context. Just translate to null. | |
| 2002 assert(compiler.compilationFailed); | |
| 2003 return irBuilder.buildNullConstant(); | |
| 2004 } | |
| 2005 return irBuilder.buildThis(); | |
| 2006 } | |
| 2007 | |
| 2008 ir.Primitive translateTypeVariableTypeLiteral( | |
| 2009 TypeVariableElement element, SourceInformation sourceInformation) { | |
| 2010 return irBuilder.buildReifyTypeVariable(element.type, sourceInformation); | |
| 2011 } | |
| 2012 | |
| 2013 @override | |
| 2014 ir.Primitive visitTypeVariableTypeLiteralGet( | |
| 2015 ast.Send node, TypeVariableElement element, _) { | |
| 2016 return translateTypeVariableTypeLiteral( | |
| 2017 element, sourceInformationBuilder.buildGet(node)); | |
| 2018 } | |
| 2019 | |
| 2020 ir.Primitive translateLogicalOperator(ast.Expression left, | |
| 2021 ast.Expression right, SourceInformation sourceInformation, | |
| 2022 {bool isLazyOr}) { | |
| 2023 ir.Primitive leftValue = visit(left); | |
| 2024 | |
| 2025 ir.Primitive buildRightValue(IrBuilder rightBuilder) { | |
| 2026 return withBuilder(rightBuilder, () => visit(right)); | |
| 2027 } | |
| 2028 | |
| 2029 return irBuilder.buildLogicalOperator( | |
| 2030 leftValue, buildRightValue, sourceInformation, | |
| 2031 isLazyOr: isLazyOr); | |
| 2032 } | |
| 2033 | |
| 2034 @override | |
| 2035 ir.Primitive visitIfNull(ast.Send node, ast.Node left, ast.Node right, _) { | |
| 2036 return irBuilder.buildIfNull( | |
| 2037 build(left), subbuild(right), sourceInformationBuilder.buildIf(node)); | |
| 2038 } | |
| 2039 | |
| 2040 @override | |
| 2041 ir.Primitive visitLogicalAnd( | |
| 2042 ast.Send node, ast.Node left, ast.Node right, _) { | |
| 2043 return translateLogicalOperator( | |
| 2044 left, right, sourceInformationBuilder.buildIf(node), | |
| 2045 isLazyOr: false); | |
| 2046 } | |
| 2047 | |
| 2048 @override | |
| 2049 ir.Primitive visitLogicalOr(ast.Send node, ast.Node left, ast.Node right, _) { | |
| 2050 return translateLogicalOperator( | |
| 2051 left, right, sourceInformationBuilder.buildIf(node), | |
| 2052 isLazyOr: true); | |
| 2053 } | |
| 2054 | |
| 2055 @override | |
| 2056 ir.Primitive visitAs(ast.Send node, ast.Node expression, DartType type, _) { | |
| 2057 ir.Primitive receiver = visit(expression); | |
| 2058 return irBuilder.buildTypeOperator( | |
| 2059 receiver, type, sourceInformationBuilder.buildAs(node), | |
| 2060 isTypeTest: false); | |
| 2061 } | |
| 2062 | |
| 2063 @override | |
| 2064 ir.Primitive visitIs(ast.Send node, ast.Node expression, DartType type, _) { | |
| 2065 ir.Primitive value = visit(expression); | |
| 2066 return irBuilder.buildTypeOperator( | |
| 2067 value, type, sourceInformationBuilder.buildIs(node), | |
| 2068 isTypeTest: true); | |
| 2069 } | |
| 2070 | |
| 2071 @override | |
| 2072 ir.Primitive visitIsNot( | |
| 2073 ast.Send node, ast.Node expression, DartType type, _) { | |
| 2074 ir.Primitive value = visit(expression); | |
| 2075 ir.Primitive check = irBuilder.buildTypeOperator( | |
| 2076 value, type, sourceInformationBuilder.buildIs(node), | |
| 2077 isTypeTest: true); | |
| 2078 return irBuilder.buildNegation( | |
| 2079 check, sourceInformationBuilder.buildIf(node)); | |
| 2080 } | |
| 2081 | |
| 2082 ir.Primitive translateBinary(ast.Send node, ast.Node left, | |
| 2083 op.BinaryOperator operator, ast.Node right) { | |
| 2084 ir.Primitive receiver = visit(left); | |
| 2085 Selector selector = new Selector.binaryOperator(operator.selectorName); | |
| 2086 List<ir.Primitive> arguments = <ir.Primitive>[visit(right)]; | |
| 2087 CallStructure callStructure = | |
| 2088 normalizeDynamicArguments(selector.callStructure, arguments); | |
| 2089 return irBuilder.buildDynamicInvocation( | |
| 2090 receiver, | |
| 2091 new Selector(selector.kind, selector.memberName, callStructure), | |
| 2092 elements.getTypeMask(node), | |
| 2093 arguments, | |
| 2094 sourceInformationBuilder.buildCall(node, node.selector)); | |
| 2095 } | |
| 2096 | |
| 2097 @override | |
| 2098 ir.Primitive visitBinary(ast.Send node, ast.Node left, | |
| 2099 op.BinaryOperator operator, ast.Node right, _) { | |
| 2100 return translateBinary(node, left, operator, right); | |
| 2101 } | |
| 2102 | |
| 2103 @override | |
| 2104 ir.Primitive visitIndex(ast.Send node, ast.Node receiver, ast.Node index, _) { | |
| 2105 ir.Primitive target = visit(receiver); | |
| 2106 Selector selector = new Selector.index(); | |
| 2107 List<ir.Primitive> arguments = <ir.Primitive>[visit(index)]; | |
| 2108 CallStructure callStructure = | |
| 2109 normalizeDynamicArguments(selector.callStructure, arguments); | |
| 2110 return irBuilder.buildDynamicInvocation( | |
| 2111 target, | |
| 2112 new Selector(selector.kind, selector.memberName, callStructure), | |
| 2113 elements.getTypeMask(node), | |
| 2114 arguments, | |
| 2115 sourceInformationBuilder.buildCall(receiver, node.selector)); | |
| 2116 } | |
| 2117 | |
| 2118 ir.Primitive translateSuperBinary( | |
| 2119 FunctionElement function, | |
| 2120 op.BinaryOperator operator, | |
| 2121 ast.Node argument, | |
| 2122 SourceInformation sourceInformation) { | |
| 2123 List<ir.Primitive> arguments = <ir.Primitive>[visit(argument)]; | |
| 2124 return irBuilder.buildSuperMethodInvocation( | |
| 2125 function, CallStructure.ONE_ARG, arguments, sourceInformation); | |
| 2126 } | |
| 2127 | |
| 2128 @override | |
| 2129 ir.Primitive visitSuperBinary(ast.Send node, FunctionElement function, | |
| 2130 op.BinaryOperator operator, ast.Node argument, _) { | |
| 2131 return translateSuperBinary(function, operator, argument, | |
| 2132 sourceInformationBuilder.buildBinary(node)); | |
| 2133 } | |
| 2134 | |
| 2135 @override | |
| 2136 ir.Primitive visitSuperIndex( | |
| 2137 ast.Send node, FunctionElement function, ast.Node index, _) { | |
| 2138 return irBuilder.buildSuperIndex( | |
| 2139 function, visit(index), sourceInformationBuilder.buildIndex(node)); | |
| 2140 } | |
| 2141 | |
| 2142 @override | |
| 2143 ir.Primitive visitEquals(ast.Send node, ast.Node left, ast.Node right, _) { | |
| 2144 return translateBinary(node, left, op.BinaryOperator.EQ, right); | |
| 2145 } | |
| 2146 | |
| 2147 @override | |
| 2148 ir.Primitive visitSuperEquals( | |
| 2149 ast.Send node, FunctionElement function, ast.Node argument, _) { | |
| 2150 return translateSuperBinary(function, op.BinaryOperator.EQ, argument, | |
| 2151 sourceInformationBuilder.buildBinary(node)); | |
| 2152 } | |
| 2153 | |
| 2154 @override | |
| 2155 ir.Primitive visitNot(ast.Send node, ast.Node expression, _) { | |
| 2156 return irBuilder.buildNegation( | |
| 2157 visit(expression), sourceInformationBuilder.buildIf(node)); | |
| 2158 } | |
| 2159 | |
| 2160 @override | |
| 2161 ir.Primitive visitNotEquals(ast.Send node, ast.Node left, ast.Node right, _) { | |
| 2162 return irBuilder.buildNegation( | |
| 2163 translateBinary(node, left, op.BinaryOperator.NOT_EQ, right), | |
| 2164 sourceInformationBuilder.buildIf(node)); | |
| 2165 } | |
| 2166 | |
| 2167 @override | |
| 2168 ir.Primitive visitSuperNotEquals( | |
| 2169 ast.Send node, FunctionElement function, ast.Node argument, _) { | |
| 2170 return irBuilder.buildNegation( | |
| 2171 translateSuperBinary(function, op.BinaryOperator.NOT_EQ, argument, | |
| 2172 sourceInformationBuilder.buildBinary(node)), | |
| 2173 sourceInformationBuilder.buildIf(node)); | |
| 2174 } | |
| 2175 | |
| 2176 @override | |
| 2177 ir.Primitive visitUnary( | |
| 2178 ast.Send node, op.UnaryOperator operator, ast.Node expression, _) { | |
| 2179 // TODO(johnniwinther): Clean up the creation of selectors. | |
| 2180 Selector selector = operator.selector; | |
| 2181 ir.Primitive receiver = translateReceiver(expression); | |
| 2182 return irBuilder.buildDynamicInvocation( | |
| 2183 receiver, | |
| 2184 selector, | |
| 2185 elements.getTypeMask(node), | |
| 2186 const [], | |
| 2187 sourceInformationBuilder.buildCall(expression, node)); | |
| 2188 } | |
| 2189 | |
| 2190 @override | |
| 2191 ir.Primitive visitSuperUnary( | |
| 2192 ast.Send node, op.UnaryOperator operator, FunctionElement function, _) { | |
| 2193 return irBuilder.buildSuperMethodInvocation(function, CallStructure.NO_ARGS, | |
| 2194 const [], sourceInformationBuilder.buildCall(node, node)); | |
| 2195 } | |
| 2196 | |
| 2197 // TODO(johnniwinther): Handle this in the [IrBuilder] to ensure the correct | |
| 2198 // semantic correlation between arguments and invocation. | |
| 2199 CallStructure translateDynamicArguments(ast.NodeList nodeList, | |
| 2200 CallStructure callStructure, List<ir.Primitive> arguments) { | |
| 2201 assert(arguments.isEmpty); | |
| 2202 for (ast.Node node in nodeList) arguments.add(visit(node)); | |
| 2203 return normalizeDynamicArguments(callStructure, arguments); | |
| 2204 } | |
| 2205 | |
| 2206 // TODO(johnniwinther): Handle this in the [IrBuilder] to ensure the correct | |
| 2207 // semantic correlation between arguments and invocation. | |
| 2208 CallStructure translateStaticArguments(ast.NodeList nodeList, Element element, | |
| 2209 CallStructure callStructure, List<ir.Primitive> arguments) { | |
| 2210 assert(arguments.isEmpty); | |
| 2211 for (ast.Node node in nodeList) arguments.add(visit(node)); | |
| 2212 return normalizeStaticArguments(callStructure, element, arguments); | |
| 2213 } | |
| 2214 | |
| 2215 ir.Primitive translateCallInvoke( | |
| 2216 ir.Primitive target, | |
| 2217 ast.NodeList argumentsNode, | |
| 2218 CallStructure callStructure, | |
| 2219 SourceInformation sourceInformation) { | |
| 2220 List<ir.Primitive> arguments = <ir.Primitive>[]; | |
| 2221 callStructure = | |
| 2222 translateDynamicArguments(argumentsNode, callStructure, arguments); | |
| 2223 return irBuilder.buildCallInvocation( | |
| 2224 target, callStructure, arguments, sourceInformation); | |
| 2225 } | |
| 2226 | |
| 2227 @override | |
| 2228 ir.Primitive handleConstantInvoke(ast.Send node, ConstantExpression constant, | |
| 2229 ast.NodeList arguments, CallStructure callStructure, _) { | |
| 2230 ir.Primitive target = buildConstantExpression( | |
| 2231 constant, sourceInformationBuilder.buildGet(node)); | |
| 2232 return translateCallInvoke(target, arguments, callStructure, | |
| 2233 sourceInformationBuilder.buildCall(node, arguments)); | |
| 2234 } | |
| 2235 | |
| 2236 @override | |
| 2237 ir.Primitive handleConstructorInvoke( | |
| 2238 ast.NewExpression node, | |
| 2239 ConstructorElement constructor, | |
| 2240 DartType type, | |
| 2241 ast.NodeList argumentsNode, | |
| 2242 CallStructure callStructure, | |
| 2243 _) { | |
| 2244 // TODO(sigmund): move these checks down after visiting arguments | |
| 2245 // (see issue #25355) | |
| 2246 ast.Send send = node.send; | |
| 2247 // If an allocation refers to a type using a deferred import prefix (e.g. | |
| 2248 // `new lib.A()`), we must ensure that the deferred import has already been | |
| 2249 // loaded. | |
| 2250 var prefix = | |
| 2251 compiler.deferredLoadTask.deferredPrefixElement(send, elements); | |
| 2252 if (prefix != null) buildCheckDeferredIsLoaded(prefix, send); | |
| 2253 | |
| 2254 // We also emit deferred import checks when using redirecting factories that | |
| 2255 // refer to deferred prefixes. | |
| 2256 if (constructor.isRedirectingFactory && !constructor.isCyclicRedirection) { | |
| 2257 ConstructorElement current = constructor; | |
| 2258 while (current.isRedirectingFactory) { | |
| 2259 var prefix = current.redirectionDeferredPrefix; | |
| 2260 if (prefix != null) buildCheckDeferredIsLoaded(prefix, send); | |
| 2261 current = current.immediateRedirectionTarget; | |
| 2262 } | |
| 2263 } | |
| 2264 | |
| 2265 List<ir.Primitive> arguments = argumentsNode.nodes.mapToList(visit); | |
| 2266 if (constructor.isGenerativeConstructor && | |
| 2267 backend.isNativeOrExtendsNative(constructor.enclosingClass)) { | |
| 2268 arguments.insert(0, irBuilder.buildNullConstant()); | |
| 2269 } | |
| 2270 // Use default values from the effective target, not the immediate target. | |
| 2271 ConstructorElement target; | |
| 2272 if (constructor == compiler.symbolConstructor) { | |
| 2273 // The Symbol constructor should perform validation of its argument | |
| 2274 // which is not expressible as a Dart const constructor. Instead, the | |
| 2275 // libraries contain a dummy const constructor implementation that | |
| 2276 // doesn't perform validation and the compiler compiles a call to | |
| 2277 // (non-const) Symbol.validated when it sees new Symbol(...). | |
| 2278 target = helpers.symbolValidatedConstructor; | |
| 2279 } else { | |
| 2280 target = constructor.implementation; | |
| 2281 } | |
| 2282 while (target.isRedirectingFactory && !target.isCyclicRedirection) { | |
| 2283 target = target.effectiveTarget.implementation; | |
| 2284 } | |
| 2285 | |
| 2286 callStructure = normalizeStaticArguments(callStructure, target, arguments); | |
| 2287 TypeMask allocationSiteType; | |
| 2288 | |
| 2289 if (Elements.isFixedListConstructorCall(constructor, send, compiler) || | |
| 2290 Elements.isGrowableListConstructorCall(constructor, send, compiler) || | |
| 2291 Elements.isFilledListConstructorCall(constructor, send, compiler) || | |
| 2292 Elements.isConstructorOfTypedArraySubclass(constructor, compiler)) { | |
| 2293 allocationSiteType = getAllocationSiteType(send); | |
| 2294 } | |
| 2295 ConstructorElement constructorImplementation = constructor.implementation; | |
| 2296 return irBuilder.buildConstructorInvocation( | |
| 2297 target, | |
| 2298 callStructure, | |
| 2299 constructorImplementation.computeEffectiveTargetType(type), | |
| 2300 arguments, | |
| 2301 sourceInformationBuilder.buildNew(node), | |
| 2302 allocationSiteType: allocationSiteType); | |
| 2303 } | |
| 2304 | |
| 2305 @override | |
| 2306 ir.Primitive handleDynamicInvoke(ast.Send node, ast.Node receiver, | |
| 2307 ast.NodeList argumentsNode, Selector selector, _) { | |
| 2308 ir.Primitive target = translateReceiver(receiver); | |
| 2309 List<ir.Primitive> arguments = <ir.Primitive>[]; | |
| 2310 CallStructure callStructure = translateDynamicArguments( | |
| 2311 argumentsNode, selector.callStructure, arguments); | |
| 2312 return irBuilder.buildDynamicInvocation( | |
| 2313 target, | |
| 2314 new Selector(selector.kind, selector.memberName, callStructure), | |
| 2315 elements.getTypeMask(node), | |
| 2316 arguments, | |
| 2317 sourceInformationBuilder.buildCall(node, node.selector)); | |
| 2318 } | |
| 2319 | |
| 2320 @override | |
| 2321 ir.Primitive visitIfNotNullDynamicPropertyInvoke(ast.Send node, | |
| 2322 ast.Node receiver, ast.NodeList argumentsNode, Selector selector, _) { | |
| 2323 ir.Primitive target = visit(receiver); | |
| 2324 return irBuilder.buildIfNotNullSend(target, nested(() { | |
| 2325 List<ir.Primitive> arguments = <ir.Primitive>[]; | |
| 2326 CallStructure callStructure = translateDynamicArguments( | |
| 2327 argumentsNode, selector.callStructure, arguments); | |
| 2328 return irBuilder.buildDynamicInvocation( | |
| 2329 target, | |
| 2330 new Selector(selector.kind, selector.memberName, callStructure), | |
| 2331 elements.getTypeMask(node), | |
| 2332 arguments, | |
| 2333 sourceInformationBuilder.buildCall(node, node.selector)); | |
| 2334 }), sourceInformationBuilder.buildIf(node)); | |
| 2335 } | |
| 2336 | |
| 2337 ir.Primitive handleLocalInvoke(ast.Send node, LocalElement element, | |
| 2338 ast.NodeList argumentsNode, CallStructure callStructure, _) { | |
| 2339 ir.Primitive function = irBuilder.buildLocalGet(element); | |
| 2340 List<ir.Primitive> arguments = <ir.Primitive>[]; | |
| 2341 callStructure = | |
| 2342 translateDynamicArguments(argumentsNode, callStructure, arguments); | |
| 2343 return irBuilder.buildCallInvocation(function, callStructure, arguments, | |
| 2344 sourceInformationBuilder.buildCall(node, argumentsNode)); | |
| 2345 } | |
| 2346 | |
| 2347 @override | |
| 2348 ir.Primitive handleStaticFieldGet(ast.Send node, FieldElement field, _) { | |
| 2349 return buildStaticFieldGet(field, sourceInformationBuilder.buildGet(node)); | |
| 2350 } | |
| 2351 | |
| 2352 @override | |
| 2353 ir.Primitive handleStaticFieldInvoke(ast.Send node, FieldElement field, | |
| 2354 ast.NodeList argumentsNode, CallStructure callStructure, _) { | |
| 2355 SourceInformation src = sourceInformationBuilder.buildGet(node); | |
| 2356 ir.Primitive target = buildStaticFieldGet(field, src); | |
| 2357 List<ir.Primitive> arguments = <ir.Primitive>[]; | |
| 2358 callStructure = | |
| 2359 translateDynamicArguments(argumentsNode, callStructure, arguments); | |
| 2360 return irBuilder.buildCallInvocation(target, callStructure, arguments, | |
| 2361 sourceInformationBuilder.buildCall(node, argumentsNode)); | |
| 2362 } | |
| 2363 | |
| 2364 @override | |
| 2365 ir.Primitive handleStaticFunctionInvoke(ast.Send node, MethodElement function, | |
| 2366 ast.NodeList argumentsNode, CallStructure callStructure, _) { | |
| 2367 if (compiler.backend.isForeign(function)) { | |
| 2368 return handleForeignCode(node, function, argumentsNode, callStructure); | |
| 2369 } else { | |
| 2370 List<ir.Primitive> arguments = <ir.Primitive>[]; | |
| 2371 callStructure = translateStaticArguments( | |
| 2372 argumentsNode, function, callStructure, arguments); | |
| 2373 Selector selector = new Selector.call(function.memberName, callStructure); | |
| 2374 return irBuilder.buildInvokeStatic(function, selector, arguments, | |
| 2375 sourceInformationBuilder.buildCall(node, node.selector)); | |
| 2376 } | |
| 2377 } | |
| 2378 | |
| 2379 @override | |
| 2380 ir.Primitive handleStaticFunctionIncompatibleInvoke( | |
| 2381 ast.Send node, | |
| 2382 MethodElement function, | |
| 2383 ast.NodeList arguments, | |
| 2384 CallStructure callStructure, | |
| 2385 _) { | |
| 2386 return irBuilder.buildStaticNoSuchMethod( | |
| 2387 elements.getSelector(node), | |
| 2388 arguments.nodes.mapToList(visit), | |
| 2389 sourceInformationBuilder.buildCall(node, node.selector)); | |
| 2390 } | |
| 2391 | |
| 2392 @override | |
| 2393 ir.Primitive handleStaticGetterInvoke(ast.Send node, FunctionElement getter, | |
| 2394 ast.NodeList argumentsNode, CallStructure callStructure, _) { | |
| 2395 ir.Primitive target = buildStaticGetterGet( | |
| 2396 getter, node, sourceInformationBuilder.buildGet(node)); | |
| 2397 List<ir.Primitive> arguments = <ir.Primitive>[]; | |
| 2398 callStructure = | |
| 2399 translateDynamicArguments(argumentsNode, callStructure, arguments); | |
| 2400 return irBuilder.buildCallInvocation(target, callStructure, arguments, | |
| 2401 sourceInformationBuilder.buildCall(node, argumentsNode)); | |
| 2402 } | |
| 2403 | |
| 2404 @override | |
| 2405 ir.Primitive visitSuperFieldInvoke(ast.Send node, FieldElement field, | |
| 2406 ast.NodeList argumentsNode, CallStructure callStructure, _) { | |
| 2407 ir.Primitive target = irBuilder.buildSuperFieldGet( | |
| 2408 field, sourceInformationBuilder.buildGet(node)); | |
| 2409 List<ir.Primitive> arguments = <ir.Primitive>[]; | |
| 2410 callStructure = | |
| 2411 translateDynamicArguments(argumentsNode, callStructure, arguments); | |
| 2412 return irBuilder.buildCallInvocation(target, callStructure, arguments, | |
| 2413 sourceInformationBuilder.buildCall(node, argumentsNode)); | |
| 2414 } | |
| 2415 | |
| 2416 @override | |
| 2417 ir.Primitive visitSuperGetterInvoke(ast.Send node, FunctionElement getter, | |
| 2418 ast.NodeList argumentsNode, CallStructure callStructure, _) { | |
| 2419 ir.Primitive target = irBuilder.buildSuperGetterGet( | |
| 2420 getter, sourceInformationBuilder.buildGet(node)); | |
| 2421 List<ir.Primitive> arguments = <ir.Primitive>[]; | |
| 2422 callStructure = | |
| 2423 translateDynamicArguments(argumentsNode, callStructure, arguments); | |
| 2424 return irBuilder.buildCallInvocation(target, callStructure, arguments, | |
| 2425 sourceInformationBuilder.buildCall(node, argumentsNode)); | |
| 2426 } | |
| 2427 | |
| 2428 @override | |
| 2429 ir.Primitive visitSuperMethodInvoke(ast.Send node, MethodElement method, | |
| 2430 ast.NodeList argumentsNode, CallStructure callStructure, _) { | |
| 2431 List<ir.Primitive> arguments = <ir.Primitive>[]; | |
| 2432 callStructure = translateStaticArguments( | |
| 2433 argumentsNode, method, callStructure, arguments); | |
| 2434 return irBuilder.buildSuperMethodInvocation(method, callStructure, | |
| 2435 arguments, sourceInformationBuilder.buildCall(node, node.selector)); | |
| 2436 } | |
| 2437 | |
| 2438 @override | |
| 2439 ir.Primitive visitSuperMethodIncompatibleInvoke( | |
| 2440 ast.Send node, | |
| 2441 MethodElement method, | |
| 2442 ast.NodeList arguments, | |
| 2443 CallStructure callStructure, | |
| 2444 _) { | |
| 2445 List<ir.Primitive> normalizedArguments = <ir.Primitive>[]; | |
| 2446 CallStructure normalizedCallStructure = translateDynamicArguments( | |
| 2447 arguments, callStructure, normalizedArguments); | |
| 2448 return buildSuperNoSuchMethod( | |
| 2449 new Selector.call(method.memberName, normalizedCallStructure), | |
| 2450 elements.getTypeMask(node), | |
| 2451 normalizedArguments, | |
| 2452 sourceInformationBuilder.buildCall(node, arguments)); | |
| 2453 } | |
| 2454 | |
| 2455 @override | |
| 2456 ir.Primitive visitUnresolvedSuperInvoke(ast.Send node, Element element, | |
| 2457 ast.NodeList argumentsNode, Selector selector, _) { | |
| 2458 List<ir.Primitive> arguments = <ir.Primitive>[]; | |
| 2459 CallStructure callStructure = translateDynamicArguments( | |
| 2460 argumentsNode, selector.callStructure, arguments); | |
| 2461 // TODO(johnniwinther): Supply a member name to the visit function instead | |
| 2462 // of looking it up in elements. | |
| 2463 return buildSuperNoSuchMethod( | |
| 2464 new Selector.call(elements.getSelector(node).memberName, callStructure), | |
| 2465 elements.getTypeMask(node), | |
| 2466 arguments, | |
| 2467 sourceInformationBuilder.buildCall(node, argumentsNode)); | |
| 2468 } | |
| 2469 | |
| 2470 @override | |
| 2471 ir.Primitive visitThisInvoke( | |
| 2472 ast.Send node, ast.NodeList arguments, CallStructure callStructure, _) { | |
| 2473 return translateCallInvoke(irBuilder.buildThis(), arguments, callStructure, | |
| 2474 sourceInformationBuilder.buildCall(node, arguments)); | |
| 2475 } | |
| 2476 | |
| 2477 @override | |
| 2478 ir.Primitive visitTypeVariableTypeLiteralInvoke( | |
| 2479 ast.Send node, | |
| 2480 TypeVariableElement element, | |
| 2481 ast.NodeList arguments, | |
| 2482 CallStructure callStructure, | |
| 2483 _) { | |
| 2484 return translateCallInvoke( | |
| 2485 translateTypeVariableTypeLiteral( | |
| 2486 element, sourceInformationBuilder.buildGet(node)), | |
| 2487 arguments, | |
| 2488 callStructure, | |
| 2489 sourceInformationBuilder.buildCall(node, arguments)); | |
| 2490 } | |
| 2491 | |
| 2492 @override | |
| 2493 ir.Primitive visitIndexSet( | |
| 2494 ast.SendSet node, ast.Node receiver, ast.Node index, ast.Node rhs, _) { | |
| 2495 return irBuilder.buildDynamicIndexSet( | |
| 2496 visit(receiver), | |
| 2497 elements.getTypeMask(node), | |
| 2498 visit(index), | |
| 2499 visit(rhs), | |
| 2500 sourceInformationBuilder.buildIndexSet(node)); | |
| 2501 } | |
| 2502 | |
| 2503 @override | |
| 2504 ir.Primitive visitSuperIndexSet(ast.SendSet node, FunctionElement function, | |
| 2505 ast.Node index, ast.Node rhs, _) { | |
| 2506 return irBuilder.buildSuperIndexSet(function, visit(index), visit(rhs), | |
| 2507 sourceInformationBuilder.buildIndexSet(node)); | |
| 2508 } | |
| 2509 | |
| 2510 ir.Primitive translateIfNull(ast.SendSet node, ir.Primitive getValue(), | |
| 2511 ast.Node rhs, void setValue(ir.Primitive value)) { | |
| 2512 ir.Primitive value = getValue(); | |
| 2513 // Unlike other compound operators if-null conditionally will not do the | |
| 2514 // assignment operation. | |
| 2515 return irBuilder.buildIfNull(value, nested(() { | |
| 2516 ir.Primitive newValue = build(rhs); | |
| 2517 setValue(newValue); | |
| 2518 return newValue; | |
| 2519 }), sourceInformationBuilder.buildIf(node)); | |
| 2520 } | |
| 2521 | |
| 2522 ir.Primitive translateCompounds(ast.SendSet node, ir.Primitive getValue(), | |
| 2523 CompoundRhs rhs, void setValue(ir.Primitive value)) { | |
| 2524 ir.Primitive value = getValue(); | |
| 2525 op.BinaryOperator operator = rhs.operator; | |
| 2526 assert(operator.kind != op.BinaryOperatorKind.IF_NULL); | |
| 2527 | |
| 2528 Selector operatorSelector = | |
| 2529 new Selector.binaryOperator(operator.selectorName); | |
| 2530 ir.Primitive rhsValue; | |
| 2531 if (rhs.kind == CompoundKind.ASSIGNMENT) { | |
| 2532 rhsValue = visit(rhs.rhs); | |
| 2533 } else { | |
| 2534 rhsValue = irBuilder.buildIntegerConstant(1); | |
| 2535 } | |
| 2536 List<ir.Primitive> arguments = <ir.Primitive>[rhsValue]; | |
| 2537 CallStructure callStructure = | |
| 2538 normalizeDynamicArguments(operatorSelector.callStructure, arguments); | |
| 2539 TypeMask operatorTypeMask = | |
| 2540 elements.getOperatorTypeMaskInComplexSendSet(node); | |
| 2541 SourceInformation operatorSourceInformation = | |
| 2542 sourceInformationBuilder.buildCall(node, node.assignmentOperator); | |
| 2543 ir.Primitive result = irBuilder.buildDynamicInvocation( | |
| 2544 value, | |
| 2545 new Selector( | |
| 2546 operatorSelector.kind, operatorSelector.memberName, callStructure), | |
| 2547 operatorTypeMask, | |
| 2548 arguments, | |
| 2549 operatorSourceInformation); | |
| 2550 setValue(result); | |
| 2551 return rhs.kind == CompoundKind.POSTFIX ? value : result; | |
| 2552 } | |
| 2553 | |
| 2554 ir.Primitive translateSetIfNull(ast.SendSet node, ir.Primitive getValue(), | |
| 2555 ast.Node rhs, void setValue(ir.Primitive value)) { | |
| 2556 ir.Primitive value = getValue(); | |
| 2557 // Unlike other compound operators if-null conditionally will not do the | |
| 2558 // assignment operation. | |
| 2559 return irBuilder.buildIfNull(value, nested(() { | |
| 2560 ir.Primitive newValue = build(rhs); | |
| 2561 setValue(newValue); | |
| 2562 return newValue; | |
| 2563 }), sourceInformationBuilder.buildIf(node)); | |
| 2564 } | |
| 2565 | |
| 2566 @override | |
| 2567 ir.Primitive handleSuperIndexSetIfNull( | |
| 2568 ast.SendSet node, | |
| 2569 Element indexFunction, | |
| 2570 Element indexSetFunction, | |
| 2571 ast.Node index, | |
| 2572 ast.Node rhs, | |
| 2573 arg, | |
| 2574 {bool isGetterValid, | |
| 2575 bool isSetterValid}) { | |
| 2576 return translateSetIfNull( | |
| 2577 node, | |
| 2578 () { | |
| 2579 if (isGetterValid) { | |
| 2580 return irBuilder.buildSuperMethodGet( | |
| 2581 indexFunction, sourceInformationBuilder.buildIndex(node)); | |
| 2582 } else { | |
| 2583 return buildSuperNoSuchGetter( | |
| 2584 indexFunction, | |
| 2585 elements.getGetterTypeMaskInComplexSendSet(node), | |
| 2586 sourceInformationBuilder.buildIndex(node)); | |
| 2587 } | |
| 2588 }, | |
| 2589 rhs, | |
| 2590 (ir.Primitive result) { | |
| 2591 if (isSetterValid) { | |
| 2592 return irBuilder.buildSuperMethodGet( | |
| 2593 indexSetFunction, sourceInformationBuilder.buildIndexSet(node)); | |
| 2594 } else { | |
| 2595 return buildSuperNoSuchSetter( | |
| 2596 indexSetFunction, | |
| 2597 elements.getTypeMask(node), | |
| 2598 result, | |
| 2599 sourceInformationBuilder.buildIndexSet(node)); | |
| 2600 } | |
| 2601 }); | |
| 2602 } | |
| 2603 | |
| 2604 @override | |
| 2605 ir.Primitive visitIndexSetIfNull( | |
| 2606 ast.SendSet node, ast.Node receiver, ast.Node index, ast.Node rhs, arg) { | |
| 2607 ir.Primitive target = visit(receiver); | |
| 2608 ir.Primitive indexValue = visit(index); | |
| 2609 return translateSetIfNull( | |
| 2610 node, | |
| 2611 () { | |
| 2612 Selector selector = new Selector.index(); | |
| 2613 List<ir.Primitive> arguments = <ir.Primitive>[indexValue]; | |
| 2614 CallStructure callStructure = | |
| 2615 normalizeDynamicArguments(selector.callStructure, arguments); | |
| 2616 return irBuilder.buildDynamicInvocation( | |
| 2617 target, | |
| 2618 new Selector(selector.kind, selector.memberName, callStructure), | |
| 2619 elements.getGetterTypeMaskInComplexSendSet(node), | |
| 2620 arguments, | |
| 2621 sourceInformationBuilder.buildCall(receiver, node)); | |
| 2622 }, | |
| 2623 rhs, | |
| 2624 (ir.Primitive result) { | |
| 2625 irBuilder.buildDynamicIndexSet(target, elements.getTypeMask(node), | |
| 2626 indexValue, result, sourceInformationBuilder.buildIndexSet(node)); | |
| 2627 }); | |
| 2628 } | |
| 2629 | |
| 2630 @override | |
| 2631 ir.Primitive handleDynamicSet( | |
| 2632 ast.SendSet node, ast.Node receiver, Name name, ast.Node rhs, _) { | |
| 2633 return irBuilder.buildDynamicSet( | |
| 2634 translateReceiver(receiver), | |
| 2635 new Selector.setter(name), | |
| 2636 elements.getTypeMask(node), | |
| 2637 visit(rhs), | |
| 2638 sourceInformationBuilder.buildAssignment(node)); | |
| 2639 } | |
| 2640 | |
| 2641 @override | |
| 2642 ir.Primitive visitIfNotNullDynamicPropertySet( | |
| 2643 ast.SendSet node, ast.Node receiver, Name name, ast.Node rhs, _) { | |
| 2644 ir.Primitive target = visit(receiver); | |
| 2645 return irBuilder.buildIfNotNullSend( | |
| 2646 target, | |
| 2647 nested(() => irBuilder.buildDynamicSet( | |
| 2648 target, | |
| 2649 new Selector.setter(name), | |
| 2650 elements.getTypeMask(node), | |
| 2651 visit(rhs), | |
| 2652 sourceInformationBuilder.buildAssignment(node))), | |
| 2653 sourceInformationBuilder.buildIf(node)); | |
| 2654 } | |
| 2655 | |
| 2656 @override | |
| 2657 ir.Primitive handleLocalSet( | |
| 2658 ast.SendSet node, LocalElement element, ast.Node rhs, _) { | |
| 2659 ir.Primitive value = visit(rhs); | |
| 2660 value = checkTypeVsElement(value, element); | |
| 2661 return irBuilder.buildLocalVariableSet( | |
| 2662 element, value, sourceInformationBuilder.buildAssignment(node)); | |
| 2663 } | |
| 2664 | |
| 2665 @override | |
| 2666 ir.Primitive handleStaticFieldSet( | |
| 2667 ast.SendSet node, FieldElement field, ast.Node rhs, _) { | |
| 2668 ir.Primitive value = visit(rhs); | |
| 2669 irBuilder.addPrimitive(new ir.SetStatic( | |
| 2670 field, value, sourceInformationBuilder.buildAssignment(node))); | |
| 2671 return value; | |
| 2672 } | |
| 2673 | |
| 2674 @override | |
| 2675 ir.Primitive visitSuperFieldSet( | |
| 2676 ast.SendSet node, FieldElement field, ast.Node rhs, _) { | |
| 2677 return irBuilder.buildSuperFieldSet( | |
| 2678 field, visit(rhs), sourceInformationBuilder.buildAssignment(node)); | |
| 2679 } | |
| 2680 | |
| 2681 @override | |
| 2682 ir.Primitive visitSuperSetterSet( | |
| 2683 ast.SendSet node, FunctionElement setter, ast.Node rhs, _) { | |
| 2684 return irBuilder.buildSuperSetterSet( | |
| 2685 setter, visit(rhs), sourceInformationBuilder.buildAssignment(node)); | |
| 2686 } | |
| 2687 | |
| 2688 @override | |
| 2689 ir.Primitive visitUnresolvedSuperIndexSet( | |
| 2690 ast.Send node, Element element, ast.Node index, ast.Node rhs, arg) { | |
| 2691 return giveup(node, 'visitUnresolvedSuperIndexSet'); | |
| 2692 } | |
| 2693 | |
| 2694 @override | |
| 2695 ir.Primitive handleStaticSetterSet( | |
| 2696 ast.SendSet node, FunctionElement setter, ast.Node rhs, _) { | |
| 2697 return irBuilder.buildStaticSetterSet( | |
| 2698 setter, visit(rhs), sourceInformationBuilder.buildAssignment(node)); | |
| 2699 } | |
| 2700 | |
| 2701 @override | |
| 2702 ir.Primitive handleTypeLiteralConstantCompounds( | |
| 2703 ast.SendSet node, ConstantExpression constant, CompoundRhs rhs, arg) { | |
| 2704 SourceInformation src = sourceInformationBuilder.buildGet(node); | |
| 2705 return translateCompounds( | |
| 2706 node, | |
| 2707 () { | |
| 2708 return buildConstantExpression(constant, src); | |
| 2709 }, | |
| 2710 rhs, | |
| 2711 (ir.Primitive value) { | |
| 2712 // The binary operator will throw before this. | |
| 2713 }); | |
| 2714 } | |
| 2715 | |
| 2716 @override | |
| 2717 ir.Primitive handleTypeLiteralConstantSetIfNulls( | |
| 2718 ast.SendSet node, ConstantExpression constant, ast.Node rhs, _) { | |
| 2719 // The type literal is never `null`. | |
| 2720 return buildConstantExpression( | |
| 2721 constant, sourceInformationBuilder.buildGet(node)); | |
| 2722 } | |
| 2723 | |
| 2724 @override | |
| 2725 ir.Primitive handleDynamicCompounds( | |
| 2726 ast.SendSet node, ast.Node receiver, Name name, CompoundRhs rhs, arg) { | |
| 2727 ir.Primitive target = translateReceiver(receiver); | |
| 2728 ir.Primitive helper() { | |
| 2729 return translateCompounds( | |
| 2730 node, | |
| 2731 () { | |
| 2732 return irBuilder.buildDynamicGet( | |
| 2733 target, | |
| 2734 new Selector.getter(name), | |
| 2735 elements.getGetterTypeMaskInComplexSendSet(node), | |
| 2736 sourceInformationBuilder.buildGet(node)); | |
| 2737 }, | |
| 2738 rhs, | |
| 2739 (ir.Primitive result) { | |
| 2740 irBuilder.buildDynamicSet( | |
| 2741 target, | |
| 2742 new Selector.setter(name), | |
| 2743 elements.getTypeMask(node), | |
| 2744 result, | |
| 2745 sourceInformationBuilder.buildAssignment(node)); | |
| 2746 }); | |
| 2747 } | |
| 2748 | |
| 2749 return node.isConditional | |
| 2750 ? irBuilder.buildIfNotNullSend( | |
| 2751 target, nested(helper), sourceInformationBuilder.buildIf(node)) | |
| 2752 : helper(); | |
| 2753 } | |
| 2754 | |
| 2755 @override | |
| 2756 ir.Primitive handleDynamicSetIfNulls( | |
| 2757 ast.Send node, ast.Node receiver, Name name, ast.Node rhs, _) { | |
| 2758 ir.Primitive target = translateReceiver(receiver); | |
| 2759 ir.Primitive helper() { | |
| 2760 return translateSetIfNull( | |
| 2761 node, | |
| 2762 () { | |
| 2763 return irBuilder.buildDynamicGet( | |
| 2764 target, | |
| 2765 new Selector.getter(name), | |
| 2766 elements.getGetterTypeMaskInComplexSendSet(node), | |
| 2767 sourceInformationBuilder.buildGet(node)); | |
| 2768 }, | |
| 2769 rhs, | |
| 2770 (ir.Primitive result) { | |
| 2771 irBuilder.buildDynamicSet( | |
| 2772 target, | |
| 2773 new Selector.setter(name), | |
| 2774 elements.getTypeMask(node), | |
| 2775 result, | |
| 2776 sourceInformationBuilder.buildAssignment(node)); | |
| 2777 }); | |
| 2778 } | |
| 2779 | |
| 2780 return node.isConditional | |
| 2781 ? irBuilder.buildIfNotNullSend( | |
| 2782 target, nested(helper), sourceInformationBuilder.buildIf(node)) | |
| 2783 : helper(); | |
| 2784 } | |
| 2785 | |
| 2786 ir.Primitive buildLocalNoSuchSetter(LocalElement local, ir.Primitive value, | |
| 2787 SourceInformation sourceInformation) { | |
| 2788 Selector selector = new Selector.setter( | |
| 2789 new Name(local.name, local.library, isSetter: true)); | |
| 2790 return irBuilder.buildStaticNoSuchMethod( | |
| 2791 selector, [value], sourceInformation); | |
| 2792 } | |
| 2793 | |
| 2794 @override | |
| 2795 ir.Primitive handleLocalCompounds( | |
| 2796 ast.SendSet node, LocalElement local, CompoundRhs rhs, arg, | |
| 2797 {bool isSetterValid}) { | |
| 2798 return translateCompounds( | |
| 2799 node, | |
| 2800 () { | |
| 2801 return irBuilder.buildLocalGet(local); | |
| 2802 }, | |
| 2803 rhs, | |
| 2804 (ir.Primitive result) { | |
| 2805 if (isSetterValid) { | |
| 2806 irBuilder.buildLocalVariableSet( | |
| 2807 local, result, sourceInformationBuilder.buildAssignment(node)); | |
| 2808 } else { | |
| 2809 Selector selector = new Selector.setter( | |
| 2810 new Name(local.name, local.library, isSetter: true)); | |
| 2811 irBuilder.buildStaticNoSuchMethod(selector, <ir.Primitive>[result], | |
| 2812 sourceInformationBuilder.buildAssignment(node)); | |
| 2813 } | |
| 2814 }); | |
| 2815 } | |
| 2816 | |
| 2817 @override | |
| 2818 ir.Primitive handleLocalSetIfNulls( | |
| 2819 ast.SendSet node, LocalElement local, ast.Node rhs, _, | |
| 2820 {bool isSetterValid}) { | |
| 2821 return translateSetIfNull( | |
| 2822 node, | |
| 2823 () { | |
| 2824 return irBuilder.buildLocalGet(local, | |
| 2825 sourceInformation: sourceInformationBuilder.buildGet(node)); | |
| 2826 }, | |
| 2827 rhs, | |
| 2828 (ir.Primitive result) { | |
| 2829 SourceInformation sourceInformation = | |
| 2830 sourceInformationBuilder.buildAssignment(node); | |
| 2831 if (isSetterValid) { | |
| 2832 irBuilder.buildLocalVariableSet(local, result, sourceInformation); | |
| 2833 } else { | |
| 2834 Selector selector = new Selector.setter( | |
| 2835 new Name(local.name, local.library, isSetter: true)); | |
| 2836 irBuilder.buildStaticNoSuchMethod( | |
| 2837 selector, <ir.Primitive>[result], sourceInformation); | |
| 2838 } | |
| 2839 }); | |
| 2840 } | |
| 2841 | |
| 2842 @override | |
| 2843 ir.Primitive handleStaticCompounds( | |
| 2844 ast.SendSet node, | |
| 2845 Element getter, | |
| 2846 CompoundGetter getterKind, | |
| 2847 Element setter, | |
| 2848 CompoundSetter setterKind, | |
| 2849 CompoundRhs rhs, | |
| 2850 arg) { | |
| 2851 return translateCompounds( | |
| 2852 node, | |
| 2853 () { | |
| 2854 SourceInformation sourceInformation = | |
| 2855 sourceInformationBuilder.buildGet(node); | |
| 2856 switch (getterKind) { | |
| 2857 case CompoundGetter.FIELD: | |
| 2858 return buildStaticFieldGet(getter, sourceInformation); | |
| 2859 case CompoundGetter.GETTER: | |
| 2860 return buildStaticGetterGet(getter, node, sourceInformation); | |
| 2861 case CompoundGetter.METHOD: | |
| 2862 return irBuilder.addPrimitive(new ir.GetStatic(getter, | |
| 2863 sourceInformation: sourceInformation, isFinal: true)); | |
| 2864 case CompoundGetter.UNRESOLVED: | |
| 2865 return irBuilder.buildStaticNoSuchMethod( | |
| 2866 new Selector.getter(new Name(getter.name, getter.library)), | |
| 2867 <ir.Primitive>[], | |
| 2868 sourceInformation); | |
| 2869 } | |
| 2870 }, | |
| 2871 rhs, | |
| 2872 (ir.Primitive result) { | |
| 2873 SourceInformation sourceInformation = | |
| 2874 sourceInformationBuilder.buildAssignment(node); | |
| 2875 switch (setterKind) { | |
| 2876 case CompoundSetter.FIELD: | |
| 2877 irBuilder.addPrimitive( | |
| 2878 new ir.SetStatic(setter, result, sourceInformation)); | |
| 2879 return; | |
| 2880 case CompoundSetter.SETTER: | |
| 2881 irBuilder.buildStaticSetterSet(setter, result, sourceInformation); | |
| 2882 return; | |
| 2883 case CompoundSetter.INVALID: | |
| 2884 irBuilder.buildStaticNoSuchMethod( | |
| 2885 new Selector.setter(new Name(setter.name, setter.library)), | |
| 2886 <ir.Primitive>[result], | |
| 2887 sourceInformation); | |
| 2888 return; | |
| 2889 } | |
| 2890 }); | |
| 2891 } | |
| 2892 | |
| 2893 @override | |
| 2894 ir.Primitive handleStaticSetIfNulls( | |
| 2895 ast.SendSet node, | |
| 2896 Element getter, | |
| 2897 CompoundGetter getterKind, | |
| 2898 Element setter, | |
| 2899 CompoundSetter setterKind, | |
| 2900 ast.Node rhs, | |
| 2901 _) { | |
| 2902 return translateSetIfNull( | |
| 2903 node, | |
| 2904 () { | |
| 2905 SourceInformation sourceInformation = | |
| 2906 sourceInformationBuilder.buildGet(node); | |
| 2907 switch (getterKind) { | |
| 2908 case CompoundGetter.FIELD: | |
| 2909 return buildStaticFieldGet(getter, sourceInformation); | |
| 2910 case CompoundGetter.GETTER: | |
| 2911 return buildStaticGetterGet(getter, node, sourceInformation); | |
| 2912 case CompoundGetter.METHOD: | |
| 2913 return irBuilder.addPrimitive(new ir.GetStatic(getter, | |
| 2914 sourceInformation: sourceInformation, isFinal: true)); | |
| 2915 case CompoundGetter.UNRESOLVED: | |
| 2916 return irBuilder.buildStaticNoSuchMethod( | |
| 2917 new Selector.getter(new Name(getter.name, getter.library)), | |
| 2918 <ir.Primitive>[], | |
| 2919 sourceInformation); | |
| 2920 } | |
| 2921 }, | |
| 2922 rhs, | |
| 2923 (ir.Primitive result) { | |
| 2924 SourceInformation sourceInformation = | |
| 2925 sourceInformationBuilder.buildAssignment(node); | |
| 2926 switch (setterKind) { | |
| 2927 case CompoundSetter.FIELD: | |
| 2928 irBuilder.addPrimitive( | |
| 2929 new ir.SetStatic(setter, result, sourceInformation)); | |
| 2930 return; | |
| 2931 case CompoundSetter.SETTER: | |
| 2932 irBuilder.buildStaticSetterSet(setter, result, sourceInformation); | |
| 2933 return; | |
| 2934 case CompoundSetter.INVALID: | |
| 2935 irBuilder.buildStaticNoSuchMethod( | |
| 2936 new Selector.setter(new Name(setter.name, setter.library)), | |
| 2937 <ir.Primitive>[result], | |
| 2938 sourceInformation); | |
| 2939 return; | |
| 2940 } | |
| 2941 }); | |
| 2942 } | |
| 2943 | |
| 2944 ir.Primitive buildSuperNoSuchGetter( | |
| 2945 Element element, TypeMask mask, SourceInformation sourceInformation) { | |
| 2946 return buildSuperNoSuchMethod( | |
| 2947 new Selector.getter(new Name(element.name, element.library)), | |
| 2948 mask, | |
| 2949 const <ir.Primitive>[], | |
| 2950 sourceInformation); | |
| 2951 } | |
| 2952 | |
| 2953 ir.Primitive buildSuperNoSuchSetter(Element element, TypeMask mask, | |
| 2954 ir.Primitive value, SourceInformation sourceInformation) { | |
| 2955 return buildSuperNoSuchMethod( | |
| 2956 new Selector.setter(new Name(element.name, element.library)), | |
| 2957 mask, | |
| 2958 <ir.Primitive>[value], | |
| 2959 sourceInformation); | |
| 2960 } | |
| 2961 | |
| 2962 @override | |
| 2963 ir.Primitive handleSuperCompounds( | |
| 2964 ast.SendSet node, | |
| 2965 Element getter, | |
| 2966 CompoundGetter getterKind, | |
| 2967 Element setter, | |
| 2968 CompoundSetter setterKind, | |
| 2969 CompoundRhs rhs, | |
| 2970 arg) { | |
| 2971 return translateCompounds( | |
| 2972 node, | |
| 2973 () { | |
| 2974 switch (getterKind) { | |
| 2975 case CompoundGetter.FIELD: | |
| 2976 return irBuilder.buildSuperFieldGet( | |
| 2977 getter, sourceInformationBuilder.buildGet(node)); | |
| 2978 case CompoundGetter.GETTER: | |
| 2979 return irBuilder.buildSuperGetterGet( | |
| 2980 getter, sourceInformationBuilder.buildGet(node)); | |
| 2981 case CompoundGetter.METHOD: | |
| 2982 return irBuilder.buildSuperMethodGet( | |
| 2983 getter, sourceInformationBuilder.buildGet(node)); | |
| 2984 case CompoundGetter.UNRESOLVED: | |
| 2985 return buildSuperNoSuchGetter( | |
| 2986 getter, | |
| 2987 elements.getGetterTypeMaskInComplexSendSet(node), | |
| 2988 sourceInformationBuilder.buildGet(node)); | |
| 2989 } | |
| 2990 }, | |
| 2991 rhs, | |
| 2992 (ir.Primitive result) { | |
| 2993 switch (setterKind) { | |
| 2994 case CompoundSetter.FIELD: | |
| 2995 irBuilder.buildSuperFieldSet(setter, result, | |
| 2996 sourceInformationBuilder.buildAssignment(node)); | |
| 2997 return; | |
| 2998 case CompoundSetter.SETTER: | |
| 2999 irBuilder.buildSuperSetterSet(setter, result, | |
| 3000 sourceInformationBuilder.buildAssignment(node)); | |
| 3001 return; | |
| 3002 case CompoundSetter.INVALID: | |
| 3003 buildSuperNoSuchSetter(setter, elements.getTypeMask(node), result, | |
| 3004 sourceInformationBuilder.buildAssignment(node)); | |
| 3005 return; | |
| 3006 } | |
| 3007 }); | |
| 3008 } | |
| 3009 | |
| 3010 @override | |
| 3011 ir.Primitive handleSuperSetIfNulls( | |
| 3012 ast.SendSet node, | |
| 3013 Element getter, | |
| 3014 CompoundGetter getterKind, | |
| 3015 Element setter, | |
| 3016 CompoundSetter setterKind, | |
| 3017 ast.Node rhs, | |
| 3018 _) { | |
| 3019 return translateSetIfNull( | |
| 3020 node, | |
| 3021 () { | |
| 3022 switch (getterKind) { | |
| 3023 case CompoundGetter.FIELD: | |
| 3024 return irBuilder.buildSuperFieldGet( | |
| 3025 getter, sourceInformationBuilder.buildGet(node)); | |
| 3026 case CompoundGetter.GETTER: | |
| 3027 return irBuilder.buildSuperGetterGet( | |
| 3028 getter, sourceInformationBuilder.buildGet(node)); | |
| 3029 case CompoundGetter.METHOD: | |
| 3030 return irBuilder.buildSuperMethodGet( | |
| 3031 getter, sourceInformationBuilder.buildGet(node)); | |
| 3032 case CompoundGetter.UNRESOLVED: | |
| 3033 return buildSuperNoSuchGetter( | |
| 3034 getter, | |
| 3035 elements.getGetterTypeMaskInComplexSendSet(node), | |
| 3036 sourceInformationBuilder.buildGet(node)); | |
| 3037 } | |
| 3038 }, | |
| 3039 rhs, | |
| 3040 (ir.Primitive result) { | |
| 3041 switch (setterKind) { | |
| 3042 case CompoundSetter.FIELD: | |
| 3043 irBuilder.buildSuperFieldSet(setter, result, | |
| 3044 sourceInformationBuilder.buildAssignment(node)); | |
| 3045 return; | |
| 3046 case CompoundSetter.SETTER: | |
| 3047 irBuilder.buildSuperSetterSet(setter, result, | |
| 3048 sourceInformationBuilder.buildAssignment(node)); | |
| 3049 return; | |
| 3050 case CompoundSetter.INVALID: | |
| 3051 buildSuperNoSuchSetter(setter, elements.getTypeMask(node), result, | |
| 3052 sourceInformationBuilder.buildAssignment(node)); | |
| 3053 return; | |
| 3054 } | |
| 3055 }); | |
| 3056 } | |
| 3057 | |
| 3058 @override | |
| 3059 ir.Primitive handleTypeVariableTypeLiteralCompounds(ast.SendSet node, | |
| 3060 TypeVariableElement typeVariable, CompoundRhs rhs, arg) { | |
| 3061 return translateCompounds( | |
| 3062 node, | |
| 3063 () { | |
| 3064 return irBuilder.buildReifyTypeVariable( | |
| 3065 typeVariable.type, sourceInformationBuilder.buildGet(node)); | |
| 3066 }, | |
| 3067 rhs, | |
| 3068 (ir.Primitive value) { | |
| 3069 // The binary operator will throw before this. | |
| 3070 }); | |
| 3071 } | |
| 3072 | |
| 3073 @override | |
| 3074 ir.Primitive visitTypeVariableTypeLiteralSetIfNull( | |
| 3075 ast.Send node, TypeVariableElement element, ast.Node rhs, _) { | |
| 3076 // The type variable is never `null`. | |
| 3077 return translateTypeVariableTypeLiteral( | |
| 3078 element, sourceInformationBuilder.buildGet(node)); | |
| 3079 } | |
| 3080 | |
| 3081 @override | |
| 3082 ir.Primitive handleIndexCompounds(ast.SendSet node, ast.Node receiver, | |
| 3083 ast.Node index, CompoundRhs rhs, arg) { | |
| 3084 ir.Primitive target = visit(receiver); | |
| 3085 ir.Primitive indexValue = visit(index); | |
| 3086 return translateCompounds( | |
| 3087 node, | |
| 3088 () { | |
| 3089 Selector selector = new Selector.index(); | |
| 3090 List<ir.Primitive> arguments = <ir.Primitive>[indexValue]; | |
| 3091 CallStructure callStructure = | |
| 3092 normalizeDynamicArguments(selector.callStructure, arguments); | |
| 3093 return irBuilder.buildDynamicInvocation( | |
| 3094 target, | |
| 3095 new Selector(selector.kind, selector.memberName, callStructure), | |
| 3096 elements.getGetterTypeMaskInComplexSendSet(node), | |
| 3097 arguments, | |
| 3098 sourceInformationBuilder.buildCall(receiver, node)); | |
| 3099 }, | |
| 3100 rhs, | |
| 3101 (ir.Primitive result) { | |
| 3102 irBuilder.buildDynamicIndexSet(target, elements.getTypeMask(node), | |
| 3103 indexValue, result, sourceInformationBuilder.buildIndexSet(node)); | |
| 3104 }); | |
| 3105 } | |
| 3106 | |
| 3107 @override | |
| 3108 ir.Primitive handleSuperIndexCompounds( | |
| 3109 ast.SendSet node, | |
| 3110 Element indexFunction, | |
| 3111 Element indexSetFunction, | |
| 3112 ast.Node index, | |
| 3113 CompoundRhs rhs, | |
| 3114 arg, | |
| 3115 {bool isGetterValid, | |
| 3116 bool isSetterValid}) { | |
| 3117 ir.Primitive indexValue = visit(index); | |
| 3118 return translateCompounds( | |
| 3119 node, | |
| 3120 () { | |
| 3121 if (isGetterValid) { | |
| 3122 return irBuilder.buildSuperIndex(indexFunction, indexValue, | |
| 3123 sourceInformationBuilder.buildIndex(node)); | |
| 3124 } else { | |
| 3125 return buildSuperNoSuchMethod( | |
| 3126 new Selector.index(), | |
| 3127 elements.getGetterTypeMaskInComplexSendSet(node), | |
| 3128 <ir.Primitive>[indexValue], | |
| 3129 sourceInformationBuilder.buildIndex(node)); | |
| 3130 } | |
| 3131 }, | |
| 3132 rhs, | |
| 3133 (ir.Primitive result) { | |
| 3134 if (isSetterValid) { | |
| 3135 irBuilder.buildSuperIndexSet(indexSetFunction, indexValue, result, | |
| 3136 sourceInformationBuilder.buildIndexSet(node)); | |
| 3137 } else { | |
| 3138 buildSuperNoSuchMethod( | |
| 3139 new Selector.indexSet(), | |
| 3140 elements.getTypeMask(node), | |
| 3141 <ir.Primitive>[indexValue, result], | |
| 3142 sourceInformationBuilder.buildIndexSet(node)); | |
| 3143 } | |
| 3144 }); | |
| 3145 } | |
| 3146 | |
| 3147 /// Build code to handle foreign code, that is, native JavaScript code, or | |
| 3148 /// builtin values and operations of the backend. | |
| 3149 ir.Primitive handleForeignCode(ast.Send node, MethodElement function, | |
| 3150 ast.NodeList argumentList, CallStructure callStructure) { | |
| 3151 void validateArgumentCount({int minimum, int exactly}) { | |
| 3152 assert((minimum == null) != (exactly == null)); | |
| 3153 int count = 0; | |
| 3154 int maximum; | |
| 3155 if (exactly != null) { | |
| 3156 minimum = exactly; | |
| 3157 maximum = exactly; | |
| 3158 } | |
| 3159 for (ast.Node argument in argumentList) { | |
| 3160 count++; | |
| 3161 if (maximum != null && count > maximum) { | |
| 3162 internalError(argument, 'Additional argument.'); | |
| 3163 } | |
| 3164 } | |
| 3165 if (count < minimum) { | |
| 3166 internalError(node, 'Expected at least $minimum arguments.'); | |
| 3167 } | |
| 3168 } | |
| 3169 | |
| 3170 /// Call a helper method from the isolate library. The isolate library uses | |
| 3171 /// its own isolate structure, that encapsulates dart2js's isolate. | |
| 3172 ir.Primitive buildIsolateHelperInvocation( | |
| 3173 MethodElement element, CallStructure callStructure) { | |
| 3174 if (element == null) { | |
| 3175 reporter.internalError(node, 'Isolate library and compiler mismatch.'); | |
| 3176 } | |
| 3177 List<ir.Primitive> arguments = <ir.Primitive>[]; | |
| 3178 callStructure = translateStaticArguments( | |
| 3179 argumentList, element, callStructure, arguments); | |
| 3180 Selector selector = new Selector.call(element.memberName, callStructure); | |
| 3181 return irBuilder.buildInvokeStatic(element, selector, arguments, | |
| 3182 sourceInformationBuilder.buildCall(node, node.selector)); | |
| 3183 } | |
| 3184 | |
| 3185 /// Lookup the value of the enum described by [node]. | |
| 3186 getEnumValue(ast.Node node, EnumClassElement enumClass, List values) { | |
| 3187 Element element = elements[node]; | |
| 3188 if (element is! EnumConstantElement || | |
| 3189 element.enclosingClass != enumClass) { | |
| 3190 internalError(node, 'expected a JsBuiltin enum value'); | |
| 3191 } | |
| 3192 EnumConstantElement enumConstant = element; | |
| 3193 int index = enumConstant.index; | |
| 3194 return values[index]; | |
| 3195 } | |
| 3196 | |
| 3197 /// Returns the String the node evaluates to, or throws an error if the | |
| 3198 /// result is not a string constant. | |
| 3199 String expectStringConstant(ast.Node node) { | |
| 3200 ir.Primitive nameValue = visit(node); | |
| 3201 if (nameValue is ir.Constant && nameValue.value.isString) { | |
| 3202 StringConstantValue constantValue = nameValue.value; | |
| 3203 return constantValue.primitiveValue.slowToString(); | |
| 3204 } else { | |
| 3205 return internalError(node, 'expected a literal string'); | |
| 3206 } | |
| 3207 } | |
| 3208 | |
| 3209 Link<ast.Node> argumentNodes = argumentList.nodes; | |
| 3210 NativeBehavior behavior = elements.getNativeData(node); | |
| 3211 switch (function.name) { | |
| 3212 case 'JS': | |
| 3213 validateArgumentCount(minimum: 2); | |
| 3214 // The first two arguments are the type and the foreign code template, | |
| 3215 // which already have been analyzed by the resolver and can be retrieved | |
| 3216 // using [NativeBehavior]. We can ignore these arguments in the backend. | |
| 3217 List<ir.Primitive> arguments = | |
| 3218 argumentNodes.skip(2).mapToList(visit, growable: false); | |
| 3219 if (behavior.codeTemplate.positionalArgumentCount != arguments.length) { | |
| 3220 reporter.reportErrorMessage(node, MessageKind.GENERIC, { | |
| 3221 'text': 'Mismatch between number of placeholders' | |
| 3222 ' and number of arguments.' | |
| 3223 }); | |
| 3224 return irBuilder.buildNullConstant(); | |
| 3225 } | |
| 3226 | |
| 3227 if (HasCapturedPlaceholders.check(behavior.codeTemplate.ast)) { | |
| 3228 reporter.reportErrorMessage(node, MessageKind.JS_PLACEHOLDER_CAPTURE); | |
| 3229 return irBuilder.buildNullConstant(); | |
| 3230 } | |
| 3231 | |
| 3232 return irBuilder.buildForeignCode(behavior.codeTemplate, arguments, | |
| 3233 behavior, sourceInformationBuilder.buildForeignCode(node)); | |
| 3234 | |
| 3235 case 'DART_CLOSURE_TO_JS': | |
| 3236 // TODO(ahe): This should probably take care to wrap the closure in | |
| 3237 // another closure that saves the current isolate. | |
| 3238 case 'RAW_DART_FUNCTION_REF': | |
| 3239 validateArgumentCount(exactly: 1); | |
| 3240 | |
| 3241 ast.Node argument = node.arguments.single; | |
| 3242 FunctionElement closure = elements[argument].implementation; | |
| 3243 if (!Elements.isStaticOrTopLevelFunction(closure)) { | |
| 3244 internalError(argument, 'only static or toplevel function supported'); | |
| 3245 } | |
| 3246 if (closure.functionSignature.hasOptionalParameters) { | |
| 3247 internalError( | |
| 3248 argument, 'closures with optional parameters not supported'); | |
| 3249 } | |
| 3250 return irBuilder.buildForeignCode( | |
| 3251 js.js.expressionTemplateYielding( | |
| 3252 backend.emitter.staticFunctionAccess(closure)), | |
| 3253 <ir.Primitive>[], | |
| 3254 NativeBehavior.PURE, | |
| 3255 sourceInformationBuilder.buildForeignCode(node), | |
| 3256 dependency: closure); | |
| 3257 | |
| 3258 case 'JS_BUILTIN': | |
| 3259 // The first argument is a description of the type and effect of the | |
| 3260 // builtin, which has already been analyzed in the frontend. The second | |
| 3261 // argument must be a [JsBuiltin] value. All other arguments are | |
| 3262 // values used by the JavaScript template that is associated with the | |
| 3263 // builtin. | |
| 3264 validateArgumentCount(minimum: 2); | |
| 3265 | |
| 3266 ast.Node builtin = argumentNodes.tail.head; | |
| 3267 JsBuiltin value = | |
| 3268 getEnumValue(builtin, helpers.jsBuiltinEnum, JsBuiltin.values); | |
| 3269 js.Template template = backend.emitter.builtinTemplateFor(value); | |
| 3270 List<ir.Primitive> arguments = | |
| 3271 argumentNodes.skip(2).mapToList(visit, growable: false); | |
| 3272 return irBuilder.buildForeignCode(template, arguments, behavior, | |
| 3273 sourceInformationBuilder.buildForeignCode(node)); | |
| 3274 | |
| 3275 case 'JS_EMBEDDED_GLOBAL': | |
| 3276 validateArgumentCount(exactly: 2); | |
| 3277 | |
| 3278 String name = expectStringConstant(argumentNodes.tail.head); | |
| 3279 js.Expression access = | |
| 3280 backend.emitter.generateEmbeddedGlobalAccess(name); | |
| 3281 js.Template template = js.js.expressionTemplateYielding(access); | |
| 3282 return irBuilder.buildForeignCode(template, <ir.Primitive>[], behavior, | |
| 3283 sourceInformationBuilder.buildForeignCode(node)); | |
| 3284 | |
| 3285 case 'JS_INTERCEPTOR_CONSTANT': | |
| 3286 validateArgumentCount(exactly: 1); | |
| 3287 | |
| 3288 ast.Node argument = argumentNodes.head; | |
| 3289 ir.Primitive argumentValue = visit(argument); | |
| 3290 if (argumentValue is ir.Constant && argumentValue.value.isType) { | |
| 3291 TypeConstantValue constant = argumentValue.value; | |
| 3292 ConstantValue interceptorValue = | |
| 3293 new InterceptorConstantValue(constant.representedType); | |
| 3294 return irBuilder.buildConstant(interceptorValue); | |
| 3295 } | |
| 3296 return internalError(argument, 'expected Type as argument'); | |
| 3297 | |
| 3298 case 'JS_EFFECT': | |
| 3299 return irBuilder.buildNullConstant(); | |
| 3300 | |
| 3301 case 'JS_GET_NAME': | |
| 3302 validateArgumentCount(exactly: 1); | |
| 3303 | |
| 3304 ast.Node argument = argumentNodes.head; | |
| 3305 JsGetName id = | |
| 3306 getEnumValue(argument, helpers.jsGetNameEnum, JsGetName.values); | |
| 3307 js.Name name = backend.namer.getNameForJsGetName(argument, id); | |
| 3308 ConstantValue nameConstant = new SyntheticConstantValue( | |
| 3309 SyntheticConstantKind.NAME, js.js.quoteName(name)); | |
| 3310 | |
| 3311 return irBuilder.buildConstant(nameConstant); | |
| 3312 | |
| 3313 case 'JS_GET_FLAG': | |
| 3314 validateArgumentCount(exactly: 1); | |
| 3315 | |
| 3316 String name = expectStringConstant(argumentNodes.first); | |
| 3317 bool value = false; | |
| 3318 switch (name) { | |
| 3319 case 'MUST_RETAIN_METADATA': | |
| 3320 value = backend.mustRetainMetadata; | |
| 3321 break; | |
| 3322 case 'USE_CONTENT_SECURITY_POLICY': | |
| 3323 value = compiler.options.useContentSecurityPolicy; | |
| 3324 break; | |
| 3325 default: | |
| 3326 internalError(node, 'Unknown internal flag "$name".'); | |
| 3327 } | |
| 3328 return irBuilder.buildBooleanConstant(value); | |
| 3329 | |
| 3330 case 'JS_STRING_CONCAT': | |
| 3331 validateArgumentCount(exactly: 2); | |
| 3332 List<ir.Primitive> arguments = argumentNodes.mapToList(visit); | |
| 3333 return irBuilder.buildStringConcatenation( | |
| 3334 arguments, sourceInformationBuilder.buildForeignCode(node)); | |
| 3335 | |
| 3336 case 'JS_CURRENT_ISOLATE_CONTEXT': | |
| 3337 validateArgumentCount(exactly: 0); | |
| 3338 | |
| 3339 if (!compiler.hasIsolateSupport) { | |
| 3340 // If the isolate library is not used, we just generate code | |
| 3341 // to fetch the current isolate. | |
| 3342 continue getStaticState; | |
| 3343 } | |
| 3344 return buildIsolateHelperInvocation( | |
| 3345 helpers.currentIsolate, CallStructure.NO_ARGS); | |
| 3346 | |
| 3347 getStaticState: | |
| 3348 case 'JS_GET_STATIC_STATE': | |
| 3349 validateArgumentCount(exactly: 0); | |
| 3350 | |
| 3351 return irBuilder.buildForeignCode( | |
| 3352 js.js.parseForeignJS(backend.namer.staticStateHolder), | |
| 3353 const <ir.Primitive>[], | |
| 3354 NativeBehavior.DEPENDS_OTHER, | |
| 3355 sourceInformationBuilder.buildForeignCode(node)); | |
| 3356 | |
| 3357 case 'JS_SET_STATIC_STATE': | |
| 3358 validateArgumentCount(exactly: 1); | |
| 3359 | |
| 3360 ir.Primitive value = visit(argumentNodes.single); | |
| 3361 String isolateName = backend.namer.staticStateHolder; | |
| 3362 return irBuilder.buildForeignCode( | |
| 3363 js.js.parseForeignJS("$isolateName = #"), | |
| 3364 <ir.Primitive>[value], | |
| 3365 NativeBehavior.CHANGES_OTHER, | |
| 3366 sourceInformationBuilder.buildForeignCode(node)); | |
| 3367 | |
| 3368 case 'JS_CALL_IN_ISOLATE': | |
| 3369 validateArgumentCount(exactly: 2); | |
| 3370 | |
| 3371 if (!compiler.hasIsolateSupport) { | |
| 3372 ir.Primitive closure = visit(argumentNodes.tail.head); | |
| 3373 return irBuilder.buildCallInvocation( | |
| 3374 closure, | |
| 3375 CallStructure.NO_ARGS, | |
| 3376 const <ir.Primitive>[], | |
| 3377 sourceInformationBuilder.buildForeignCode(node)); | |
| 3378 } | |
| 3379 return buildIsolateHelperInvocation( | |
| 3380 helpers.callInIsolate, CallStructure.TWO_ARGS); | |
| 3381 | |
| 3382 default: | |
| 3383 return giveup(node, 'unplemented native construct: ${function.name}'); | |
| 3384 } | |
| 3385 } | |
| 3386 | |
| 3387 /// Evaluates a string interpolation and appends each part to [accumulator] | |
| 3388 /// (after stringify conversion). | |
| 3389 void buildStringParts(ast.Node node, List<ir.Primitive> accumulator) { | |
| 3390 if (node is ast.StringJuxtaposition) { | |
| 3391 buildStringParts(node.first, accumulator); | |
| 3392 buildStringParts(node.second, accumulator); | |
| 3393 } else if (node is ast.StringInterpolation) { | |
| 3394 buildStringParts(node.string, accumulator); | |
| 3395 for (ast.StringInterpolationPart part in node.parts) { | |
| 3396 buildStringParts(part.expression, accumulator); | |
| 3397 buildStringParts(part.string, accumulator); | |
| 3398 } | |
| 3399 } else if (node is ast.LiteralString) { | |
| 3400 // Empty strings often occur at the end of a string interpolation, | |
| 3401 // do not bother to include them. | |
| 3402 if (!node.dartString.isEmpty) { | |
| 3403 accumulator.add(irBuilder.buildDartStringConstant(node.dartString)); | |
| 3404 } | |
| 3405 } else if (node is ast.ParenthesizedExpression) { | |
| 3406 buildStringParts(node.expression, accumulator); | |
| 3407 } else { | |
| 3408 ir.Primitive value = visit(node); | |
| 3409 accumulator.add(irBuilder.buildStaticFunctionInvocation( | |
| 3410 helpers.stringInterpolationHelper, | |
| 3411 <ir.Primitive>[value], | |
| 3412 sourceInformationBuilder.buildStringInterpolation(node))); | |
| 3413 } | |
| 3414 } | |
| 3415 | |
| 3416 ir.Primitive visitStringJuxtaposition(ast.StringJuxtaposition node) { | |
| 3417 assert(irBuilder.isOpen); | |
| 3418 List<ir.Primitive> parts = <ir.Primitive>[]; | |
| 3419 buildStringParts(node, parts); | |
| 3420 return irBuilder.buildStringConcatenation( | |
| 3421 parts, sourceInformationBuilder.buildStringInterpolation(node)); | |
| 3422 } | |
| 3423 | |
| 3424 ir.Primitive visitStringInterpolation(ast.StringInterpolation node) { | |
| 3425 assert(irBuilder.isOpen); | |
| 3426 List<ir.Primitive> parts = <ir.Primitive>[]; | |
| 3427 buildStringParts(node, parts); | |
| 3428 return irBuilder.buildStringConcatenation( | |
| 3429 parts, sourceInformationBuilder.buildStringInterpolation(node)); | |
| 3430 } | |
| 3431 | |
| 3432 ir.Primitive translateConstant(ast.Node node) { | |
| 3433 assert(irBuilder.isOpen); | |
| 3434 return irBuilder.buildConstant(getConstantForNode(node), | |
| 3435 sourceInformation: sourceInformationBuilder.buildGet(node)); | |
| 3436 } | |
| 3437 | |
| 3438 ir.Primitive visitThrow(ast.Throw node) { | |
| 3439 assert(irBuilder.isOpen); | |
| 3440 // This function is not called for throw expressions occurring as | |
| 3441 // statements. | |
| 3442 return irBuilder.buildNonTailThrow(visit(node.expression)); | |
| 3443 } | |
| 3444 | |
| 3445 ir.Primitive buildSuperNoSuchMethod(Selector selector, TypeMask mask, | |
| 3446 List<ir.Primitive> arguments, SourceInformation sourceInformation) { | |
| 3447 ClassElement cls = elements.analyzedElement.enclosingClass; | |
| 3448 MethodElement element = cls.lookupSuperMember(Identifiers.noSuchMethod_); | |
| 3449 if (!Selectors.noSuchMethod_.signatureApplies(element)) { | |
| 3450 element = compiler.coreClasses.objectClass | |
| 3451 .lookupMember(Identifiers.noSuchMethod_); | |
| 3452 } | |
| 3453 return irBuilder.buildSuperMethodInvocation( | |
| 3454 element, | |
| 3455 Selectors.noSuchMethod_.callStructure, | |
| 3456 [irBuilder.buildInvocationMirror(selector, arguments)], | |
| 3457 sourceInformation); | |
| 3458 } | |
| 3459 | |
| 3460 @override | |
| 3461 ir.Primitive visitUnresolvedCompound(ast.Send node, Element element, | |
| 3462 op.AssignmentOperator operator, ast.Node rhs, _) { | |
| 3463 return irBuilder.buildStaticNoSuchMethod( | |
| 3464 new Selector.getter(new Name(element.name, element.library)), | |
| 3465 [], | |
| 3466 sourceInformationBuilder.buildGet(node)); | |
| 3467 } | |
| 3468 | |
| 3469 @override | |
| 3470 ir.Primitive visitUnresolvedClassConstructorInvoke( | |
| 3471 ast.NewExpression node, | |
| 3472 Element element, | |
| 3473 DartType type, | |
| 3474 ast.NodeList arguments, | |
| 3475 Selector selector, | |
| 3476 _) { | |
| 3477 // If the class is missing it's a runtime error. | |
| 3478 ir.Primitive message = | |
| 3479 irBuilder.buildStringConstant("Unresolved class: '${element.name}'"); | |
| 3480 return irBuilder.buildStaticFunctionInvocation(helpers.throwRuntimeError, | |
| 3481 <ir.Primitive>[message], sourceInformationBuilder.buildNew(node)); | |
| 3482 } | |
| 3483 | |
| 3484 @override | |
| 3485 ir.Primitive visitUnresolvedConstructorInvoke( | |
| 3486 ast.NewExpression node, | |
| 3487 Element constructor, | |
| 3488 DartType type, | |
| 3489 ast.NodeList argumentsNode, | |
| 3490 Selector selector, | |
| 3491 _) { | |
| 3492 // If the class is there but the constructor is missing, it's an NSM error. | |
| 3493 List<ir.Primitive> arguments = <ir.Primitive>[]; | |
| 3494 CallStructure callStructure = translateDynamicArguments( | |
| 3495 argumentsNode, selector.callStructure, arguments); | |
| 3496 return irBuilder.buildStaticNoSuchMethod( | |
| 3497 new Selector(selector.kind, selector.memberName, callStructure), | |
| 3498 arguments, | |
| 3499 sourceInformationBuilder.buildNew(node)); | |
| 3500 } | |
| 3501 | |
| 3502 @override | |
| 3503 ir.Primitive visitConstructorIncompatibleInvoke( | |
| 3504 ast.NewExpression node, | |
| 3505 ConstructorElement constructor, | |
| 3506 DartType type, | |
| 3507 ast.NodeList argumentsNode, | |
| 3508 CallStructure callStructure, | |
| 3509 _) { | |
| 3510 List<ir.Primitive> arguments = <ir.Primitive>[]; | |
| 3511 callStructure = | |
| 3512 translateDynamicArguments(argumentsNode, callStructure, arguments); | |
| 3513 return irBuilder.buildStaticNoSuchMethod( | |
| 3514 new Selector.call(constructor.memberName, callStructure), | |
| 3515 arguments, | |
| 3516 sourceInformationBuilder.buildNew(node)); | |
| 3517 } | |
| 3518 | |
| 3519 @override | |
| 3520 ir.Primitive visitUnresolvedGet(ast.Send node, Element element, _) { | |
| 3521 return irBuilder.buildStaticNoSuchMethod(elements.getSelector(node), [], | |
| 3522 sourceInformationBuilder.buildGet(node)); | |
| 3523 } | |
| 3524 | |
| 3525 @override | |
| 3526 ir.Primitive visitUnresolvedInvoke(ast.Send node, Element element, | |
| 3527 ast.NodeList arguments, Selector selector, _) { | |
| 3528 return irBuilder.buildStaticNoSuchMethod( | |
| 3529 elements.getSelector(node), | |
| 3530 arguments.nodes.mapToList(visit), | |
| 3531 sourceInformationBuilder.buildCall(node, node.selector)); | |
| 3532 } | |
| 3533 | |
| 3534 @override | |
| 3535 ir.Primitive visitUnresolvedRedirectingFactoryConstructorInvoke( | |
| 3536 ast.NewExpression node, | |
| 3537 ConstructorElement constructor, | |
| 3538 InterfaceType type, | |
| 3539 ast.NodeList argumentsNode, | |
| 3540 CallStructure callStructure, | |
| 3541 _) { | |
| 3542 String nameString = Elements.reconstructConstructorName(constructor); | |
| 3543 Name name = new Name(nameString, constructor.library); | |
| 3544 List<ir.Primitive> arguments = <ir.Primitive>[]; | |
| 3545 callStructure = | |
| 3546 translateDynamicArguments(argumentsNode, callStructure, arguments); | |
| 3547 return irBuilder.buildStaticNoSuchMethod( | |
| 3548 new Selector.call(name, callStructure), | |
| 3549 arguments, | |
| 3550 sourceInformationBuilder.buildNew(node)); | |
| 3551 } | |
| 3552 | |
| 3553 @override | |
| 3554 ir.Primitive visitUnresolvedSet( | |
| 3555 ast.Send node, Element element, ast.Node rhs, _) { | |
| 3556 return irBuilder.buildStaticNoSuchMethod(elements.getSelector(node), | |
| 3557 [visit(rhs)], sourceInformationBuilder.buildAssignment(node)); | |
| 3558 } | |
| 3559 | |
| 3560 @override | |
| 3561 ir.Primitive visitUnresolvedSuperIndex( | |
| 3562 ast.Send node, Element function, ast.Node index, _) { | |
| 3563 // Assume the index getter is missing. | |
| 3564 return buildSuperNoSuchMethod( | |
| 3565 new Selector.index(), | |
| 3566 elements.getTypeMask(node), | |
| 3567 [visit(index)], | |
| 3568 sourceInformationBuilder.buildIndex(node)); | |
| 3569 } | |
| 3570 | |
| 3571 @override | |
| 3572 ir.Primitive visitUnresolvedSuperBinary(ast.Send node, Element element, | |
| 3573 op.BinaryOperator operator, ast.Node argument, _) { | |
| 3574 return buildSuperNoSuchMethod( | |
| 3575 elements.getSelector(node), | |
| 3576 elements.getTypeMask(node), | |
| 3577 [visit(argument)], | |
| 3578 sourceInformationBuilder.buildCall(node, node.selector)); | |
| 3579 } | |
| 3580 | |
| 3581 @override | |
| 3582 ir.Primitive visitUnresolvedSuperUnary( | |
| 3583 ast.Send node, op.UnaryOperator operator, Element element, _) { | |
| 3584 return buildSuperNoSuchMethod( | |
| 3585 elements.getSelector(node), | |
| 3586 elements.getTypeMask(node), | |
| 3587 [], | |
| 3588 sourceInformationBuilder.buildCall(node, node.selector)); | |
| 3589 } | |
| 3590 | |
| 3591 @override | |
| 3592 ir.Primitive bulkHandleNode(ast.Node node, String message, _) { | |
| 3593 return giveup(node, "Unhandled node: ${message.replaceAll('#', '$node')}"); | |
| 3594 } | |
| 3595 | |
| 3596 @override | |
| 3597 ir.Primitive bulkHandleError(ast.Node node, ErroneousElement error, _) { | |
| 3598 return irBuilder.buildNullConstant(); | |
| 3599 } | |
| 3600 | |
| 3601 @override | |
| 3602 ir.Primitive visitClassTypeLiteralSet( | |
| 3603 ast.SendSet node, TypeConstantExpression constant, ast.Node rhs, _) { | |
| 3604 InterfaceType type = constant.type; | |
| 3605 ClassElement element = type.element; | |
| 3606 return irBuilder.buildStaticNoSuchMethod( | |
| 3607 new Selector.setter(element.memberName), | |
| 3608 [visit(rhs)], | |
| 3609 sourceInformationBuilder.buildAssignment(node)); | |
| 3610 } | |
| 3611 | |
| 3612 @override | |
| 3613 ir.Primitive visitTypedefTypeLiteralSet( | |
| 3614 ast.SendSet node, TypeConstantExpression constant, ast.Node rhs, _) { | |
| 3615 TypedefType type = constant.type; | |
| 3616 TypedefElement element = type.element; | |
| 3617 return irBuilder.buildStaticNoSuchMethod( | |
| 3618 new Selector.setter(element.memberName), | |
| 3619 [visit(rhs)], | |
| 3620 sourceInformationBuilder.buildAssignment(node)); | |
| 3621 } | |
| 3622 | |
| 3623 @override | |
| 3624 ir.Primitive visitTypeVariableTypeLiteralSet( | |
| 3625 ast.SendSet node, TypeVariableElement element, ast.Node rhs, _) { | |
| 3626 return irBuilder.buildStaticNoSuchMethod( | |
| 3627 new Selector.setter(element.memberName), | |
| 3628 [visit(rhs)], | |
| 3629 sourceInformationBuilder.buildAssignment(node)); | |
| 3630 } | |
| 3631 | |
| 3632 @override | |
| 3633 ir.Primitive visitDynamicTypeLiteralSet( | |
| 3634 ast.SendSet node, ConstantExpression constant, ast.Node rhs, _) { | |
| 3635 return irBuilder.buildStaticNoSuchMethod( | |
| 3636 new Selector.setter(Names.dynamic_), | |
| 3637 [visit(rhs)], | |
| 3638 sourceInformationBuilder.buildAssignment(node)); | |
| 3639 } | |
| 3640 | |
| 3641 @override | |
| 3642 ir.Primitive visitAbstractClassConstructorInvoke( | |
| 3643 ast.NewExpression node, | |
| 3644 ConstructorElement element, | |
| 3645 InterfaceType type, | |
| 3646 ast.NodeList arguments, | |
| 3647 CallStructure callStructure, | |
| 3648 _) { | |
| 3649 for (ast.Node argument in arguments) visit(argument); | |
| 3650 ir.Primitive name = | |
| 3651 irBuilder.buildStringConstant(element.enclosingClass.name); | |
| 3652 return irBuilder.buildStaticFunctionInvocation( | |
| 3653 helpers.throwAbstractClassInstantiationError, | |
| 3654 <ir.Primitive>[name], | |
| 3655 sourceInformationBuilder.buildNew(node)); | |
| 3656 } | |
| 3657 | |
| 3658 @override | |
| 3659 ir.Primitive handleFinalStaticFieldSet( | |
| 3660 ast.SendSet node, FieldElement field, ast.Node rhs, _) { | |
| 3661 // TODO(asgerf): Include class name somehow for static class members? | |
| 3662 return irBuilder.buildStaticNoSuchMethod( | |
| 3663 new Selector.setter(field.memberName), | |
| 3664 [visit(rhs)], | |
| 3665 sourceInformationBuilder.buildAssignment(node)); | |
| 3666 } | |
| 3667 | |
| 3668 @override | |
| 3669 ir.Primitive visitFinalSuperFieldSet( | |
| 3670 ast.SendSet node, FieldElement field, ast.Node rhs, _) { | |
| 3671 return buildSuperNoSuchMethod( | |
| 3672 new Selector.setter(field.memberName), | |
| 3673 elements.getTypeMask(node), | |
| 3674 [visit(rhs)], | |
| 3675 sourceInformationBuilder.buildAssignment(node)); | |
| 3676 } | |
| 3677 | |
| 3678 @override | |
| 3679 ir.Primitive handleImmutableLocalSet( | |
| 3680 ast.SendSet node, LocalElement local, ast.Node rhs, _) { | |
| 3681 return irBuilder.buildStaticNoSuchMethod( | |
| 3682 new Selector.setter(new Name(local.name, local.library)), | |
| 3683 [visit(rhs)], | |
| 3684 sourceInformationBuilder.buildAssignment(node)); | |
| 3685 } | |
| 3686 | |
| 3687 @override | |
| 3688 ir.Primitive handleStaticFunctionSet( | |
| 3689 ast.Send node, MethodElement function, ast.Node rhs, _) { | |
| 3690 return irBuilder.buildStaticNoSuchMethod( | |
| 3691 new Selector.setter(function.memberName), | |
| 3692 [visit(rhs)], | |
| 3693 sourceInformationBuilder.buildAssignment(node)); | |
| 3694 } | |
| 3695 | |
| 3696 @override | |
| 3697 ir.Primitive handleStaticGetterSet( | |
| 3698 ast.SendSet node, GetterElement getter, ast.Node rhs, _) { | |
| 3699 return irBuilder.buildStaticNoSuchMethod( | |
| 3700 new Selector.setter(getter.memberName), | |
| 3701 [visit(rhs)], | |
| 3702 sourceInformationBuilder.buildAssignment(node)); | |
| 3703 } | |
| 3704 | |
| 3705 @override | |
| 3706 ir.Primitive handleStaticSetterGet(ast.Send node, SetterElement setter, _) { | |
| 3707 return irBuilder.buildStaticNoSuchMethod( | |
| 3708 new Selector.getter(setter.memberName), | |
| 3709 [], | |
| 3710 sourceInformationBuilder.buildGet(node)); | |
| 3711 } | |
| 3712 | |
| 3713 @override | |
| 3714 ir.Primitive handleStaticSetterInvoke(ast.Send node, SetterElement setter, | |
| 3715 ast.NodeList argumentsNode, CallStructure callStructure, _) { | |
| 3716 // Translate as a method call. | |
| 3717 List<ir.Primitive> arguments = argumentsNode.nodes.mapToList(visit); | |
| 3718 return irBuilder.buildStaticNoSuchMethod( | |
| 3719 new Selector.call(setter.memberName, callStructure), | |
| 3720 arguments, | |
| 3721 sourceInformationBuilder.buildCall(node, argumentsNode)); | |
| 3722 } | |
| 3723 | |
| 3724 @override | |
| 3725 ir.Primitive visitSuperGetterSet( | |
| 3726 ast.SendSet node, GetterElement getter, ast.Node rhs, _) { | |
| 3727 return buildSuperNoSuchMethod( | |
| 3728 new Selector.setter(getter.memberName), | |
| 3729 elements.getTypeMask(node), | |
| 3730 [visit(rhs)], | |
| 3731 sourceInformationBuilder.buildAssignment(node)); | |
| 3732 } | |
| 3733 | |
| 3734 @override | |
| 3735 ir.Primitive visitSuperMethodSet( | |
| 3736 ast.Send node, MethodElement method, ast.Node rhs, _) { | |
| 3737 return buildSuperNoSuchMethod( | |
| 3738 new Selector.setter(method.memberName), | |
| 3739 elements.getTypeMask(node), | |
| 3740 [visit(rhs)], | |
| 3741 sourceInformationBuilder.buildAssignment(node)); | |
| 3742 } | |
| 3743 | |
| 3744 @override | |
| 3745 ir.Primitive visitSuperSetterGet(ast.Send node, SetterElement setter, _) { | |
| 3746 return buildSuperNoSuchMethod( | |
| 3747 new Selector.getter(setter.memberName), | |
| 3748 elements.getTypeMask(node), | |
| 3749 [], | |
| 3750 sourceInformationBuilder.buildGet(node)); | |
| 3751 } | |
| 3752 | |
| 3753 @override | |
| 3754 ir.Primitive visitSuperSetterInvoke(ast.Send node, SetterElement setter, | |
| 3755 ast.NodeList argumentsNode, CallStructure callStructure, _) { | |
| 3756 List<ir.Primitive> arguments = <ir.Primitive>[]; | |
| 3757 callStructure = | |
| 3758 translateDynamicArguments(argumentsNode, callStructure, arguments); | |
| 3759 return buildSuperNoSuchMethod( | |
| 3760 new Selector.call(setter.memberName, callStructure), | |
| 3761 elements.getTypeMask(node), | |
| 3762 arguments, | |
| 3763 sourceInformationBuilder.buildCall(node, argumentsNode)); | |
| 3764 } | |
| 3765 | |
| 3766 ir.FunctionDefinition nullIfGiveup(ir.FunctionDefinition action()) { | |
| 3767 try { | |
| 3768 return action(); | |
| 3769 } catch (e) { | |
| 3770 if (e == ABORT_IRNODE_BUILDER) { | |
| 3771 return null; | |
| 3772 } | |
| 3773 rethrow; | |
| 3774 } | |
| 3775 } | |
| 3776 | |
| 3777 internalError(ast.Node node, String message) { | |
| 3778 reporter.internalError(node, message); | |
| 3779 } | |
| 3780 | |
| 3781 @override | |
| 3782 visitNode(ast.Node node) { | |
| 3783 giveup(node, "Unhandled node"); | |
| 3784 } | |
| 3785 | |
| 3786 dynamic giveup(ast.Node node, [String reason]) { | |
| 3787 bailoutMessage = '($node): $reason'; | |
| 3788 throw ABORT_IRNODE_BUILDER; | |
| 3789 } | |
| 3790 } | |
| 3791 | |
| 3792 final String ABORT_IRNODE_BUILDER = "IrNode builder aborted"; | |
| 3793 | |
| 3794 /// Determines which local variables should be boxed in a mutable variable | |
| 3795 /// inside a given try block. | |
| 3796 class TryBoxedVariables extends ast.Visitor { | |
| 3797 final TreeElements elements; | |
| 3798 TryBoxedVariables(this.elements); | |
| 3799 | |
| 3800 FunctionElement currentFunction; | |
| 3801 bool insideInitializer = false; | |
| 3802 Set<Local> capturedVariables = new Set<Local>(); | |
| 3803 | |
| 3804 /// A map containing variables boxed inside try blocks. | |
| 3805 /// | |
| 3806 /// The map is keyed by the [NodeList] of catch clauses for try/catch and | |
| 3807 /// by the finally block for try/finally. try/catch/finally is treated | |
| 3808 /// as a try/catch nested in the try block of a try/finally. | |
| 3809 Map<ast.Node, TryStatementInfo> tryStatements = | |
| 3810 <ast.Node, TryStatementInfo>{}; | |
| 3811 | |
| 3812 List<TryStatementInfo> tryNestingStack = <TryStatementInfo>[]; | |
| 3813 bool get inTryStatement => tryNestingStack.isNotEmpty; | |
| 3814 | |
| 3815 String bailoutMessage = null; | |
| 3816 | |
| 3817 giveup(ast.Node node, [String reason]) { | |
| 3818 bailoutMessage = '($node): $reason'; | |
| 3819 throw ABORT_IRNODE_BUILDER; | |
| 3820 } | |
| 3821 | |
| 3822 void markAsCaptured(Local local) { | |
| 3823 capturedVariables.add(local); | |
| 3824 } | |
| 3825 | |
| 3826 analyze(ast.Node node) { | |
| 3827 visit(node); | |
| 3828 // Variables that are captured by a closure are boxed for their entire | |
| 3829 // lifetime, so they never need to be boxed on entry to a try block. | |
| 3830 // They are not filtered out before this because we cannot identify all | |
| 3831 // of them in the same pass (they may be captured by a closure after the | |
| 3832 // try statement). | |
| 3833 for (TryStatementInfo info in tryStatements.values) { | |
| 3834 info.boxedOnEntry.removeAll(capturedVariables); | |
| 3835 } | |
| 3836 } | |
| 3837 | |
| 3838 visit(ast.Node node) => node.accept(this); | |
| 3839 | |
| 3840 visitNode(ast.Node node) { | |
| 3841 node.visitChildren(this); | |
| 3842 } | |
| 3843 | |
| 3844 void handleSend(ast.Send node) { | |
| 3845 Element element = elements[node]; | |
| 3846 if (Elements.isLocal(element) && | |
| 3847 !element.isConst && | |
| 3848 element.enclosingElement != currentFunction) { | |
| 3849 LocalElement local = element; | |
| 3850 markAsCaptured(local); | |
| 3851 } | |
| 3852 } | |
| 3853 | |
| 3854 visitSend(ast.Send node) { | |
| 3855 handleSend(node); | |
| 3856 node.visitChildren(this); | |
| 3857 } | |
| 3858 | |
| 3859 visitSendSet(ast.SendSet node) { | |
| 3860 handleSend(node); | |
| 3861 Element element = elements[node]; | |
| 3862 if (Elements.isLocal(element)) { | |
| 3863 LocalElement local = element; | |
| 3864 if (insideInitializer && | |
| 3865 (local.isRegularParameter || local.isInitializingFormal) && | |
| 3866 local.enclosingElement == currentFunction) { | |
| 3867 assert(local.enclosingElement.isConstructor); | |
| 3868 // Initializers in an initializer-list can communicate via parameters. | |
| 3869 // If a parameter is stored in an initializer list we box it. | |
| 3870 // TODO(sigurdm): Fix this. | |
| 3871 // Though these variables do not outlive the activation of the | |
| 3872 // function, they still need to be boxed. As a simplification, we | |
| 3873 // treat them as if they are captured by a closure (i.e., they do | |
| 3874 // outlive the activation of the function). | |
| 3875 markAsCaptured(local); | |
| 3876 } else if (inTryStatement) { | |
| 3877 assert(local.isRegularParameter || | |
| 3878 local.isVariable || | |
| 3879 local.isInitializingFormal); | |
| 3880 // Search for the position of the try block containing the variable | |
| 3881 // declaration, or -1 if it is declared outside the outermost try. | |
| 3882 int i = tryNestingStack.length - 1; | |
| 3883 while (i >= 0 && !tryNestingStack[i].declared.contains(local)) { | |
| 3884 --i; | |
| 3885 } | |
| 3886 // If there is a next inner try, then the variable should be boxed on | |
| 3887 // entry to it. | |
| 3888 if (i + 1 < tryNestingStack.length) { | |
| 3889 tryNestingStack[i + 1].boxedOnEntry.add(local); | |
| 3890 } | |
| 3891 } | |
| 3892 } | |
| 3893 node.visitChildren(this); | |
| 3894 } | |
| 3895 | |
| 3896 visitFunctionExpression(ast.FunctionExpression node) { | |
| 3897 FunctionElement savedFunction = currentFunction; | |
| 3898 currentFunction = elements[node]; | |
| 3899 | |
| 3900 if (currentFunction.asyncMarker != AsyncMarker.SYNC && | |
| 3901 currentFunction.asyncMarker != AsyncMarker.SYNC_STAR && | |
| 3902 currentFunction.asyncMarker != AsyncMarker.ASYNC) { | |
| 3903 giveup(node, "cannot handle async* functions"); | |
| 3904 } | |
| 3905 | |
| 3906 if (node.initializers != null) { | |
| 3907 visit(node.initializers); | |
| 3908 } | |
| 3909 visit(node.body); | |
| 3910 currentFunction = savedFunction; | |
| 3911 } | |
| 3912 | |
| 3913 visitTryStatement(ast.TryStatement node) { | |
| 3914 // Try/catch/finally is treated as two simpler constructs: try/catch and | |
| 3915 // try/finally. The encoding is: | |
| 3916 // | |
| 3917 // try S0 catch (ex, st) S1 finally S2 | |
| 3918 // ==> | |
| 3919 // try { try S0 catch (ex, st) S1 } finally S2 | |
| 3920 // | |
| 3921 // The analysis associates variables assigned in S0 with the catch clauses | |
| 3922 // and variables assigned in S0 and S1 with the finally block. | |
| 3923 TryStatementInfo enterTryFor(ast.Node node) { | |
| 3924 TryStatementInfo info = new TryStatementInfo(); | |
| 3925 tryStatements[node] = info; | |
| 3926 tryNestingStack.add(info); | |
| 3927 return info; | |
| 3928 } | |
| 3929 | |
| 3930 void leaveTryFor(TryStatementInfo info) { | |
| 3931 assert(tryNestingStack.last == info); | |
| 3932 tryNestingStack.removeLast(); | |
| 3933 } | |
| 3934 | |
| 3935 bool hasCatch = !node.catchBlocks.isEmpty; | |
| 3936 bool hasFinally = node.finallyBlock != null; | |
| 3937 TryStatementInfo catchInfo, finallyInfo; | |
| 3938 // There is a nesting stack of try blocks, so the outer try/finally block | |
| 3939 // is added first. | |
| 3940 if (hasFinally) finallyInfo = enterTryFor(node.finallyBlock); | |
| 3941 if (hasCatch) catchInfo = enterTryFor(node.catchBlocks); | |
| 3942 visit(node.tryBlock); | |
| 3943 | |
| 3944 if (hasCatch) { | |
| 3945 leaveTryFor(catchInfo); | |
| 3946 visit(node.catchBlocks); | |
| 3947 } | |
| 3948 if (hasFinally) { | |
| 3949 leaveTryFor(finallyInfo); | |
| 3950 visit(node.finallyBlock); | |
| 3951 } | |
| 3952 } | |
| 3953 | |
| 3954 visitVariableDefinitions(ast.VariableDefinitions node) { | |
| 3955 if (inTryStatement) { | |
| 3956 for (ast.Node definition in node.definitions.nodes) { | |
| 3957 LocalVariableElement local = elements[definition]; | |
| 3958 assert(local != null); | |
| 3959 // In the closure conversion pass we check for isInitializingFormal, | |
| 3960 // but I'm not sure it can arise. | |
| 3961 assert(!local.isInitializingFormal); | |
| 3962 tryNestingStack.last.declared.add(local); | |
| 3963 } | |
| 3964 } | |
| 3965 node.visitChildren(this); | |
| 3966 } | |
| 3967 } | |
| 3968 | |
| 3969 /// The [IrBuilder]s view on the information about the program that has been | |
| 3970 /// computed in resolution and and type interence. | |
| 3971 class GlobalProgramInformation { | |
| 3972 final Compiler _compiler; | |
| 3973 JavaScriptBackend get _backend => _compiler.backend; | |
| 3974 | |
| 3975 GlobalProgramInformation(this._compiler); | |
| 3976 | |
| 3977 /// Returns [true], if the analysis could not determine that the type | |
| 3978 /// arguments for the class [cls] are never used in the program. | |
| 3979 bool requiresRuntimeTypesFor(ClassElement cls) { | |
| 3980 return cls.typeVariables.isNotEmpty && _backend.classNeedsRti(cls); | |
| 3981 } | |
| 3982 | |
| 3983 FunctionElement get throwTypeErrorHelper => _backend.helpers.throwTypeError; | |
| 3984 Element get throwNoSuchMethod => _backend.helpers.throwNoSuchMethod; | |
| 3985 | |
| 3986 ClassElement get nullClass => _compiler.coreClasses.nullClass; | |
| 3987 | |
| 3988 DartType unaliasType(DartType type) => type.unaliased; | |
| 3989 | |
| 3990 TypeMask getTypeMaskForForeign(NativeBehavior behavior) { | |
| 3991 if (behavior == null) { | |
| 3992 return _backend.dynamicType; | |
| 3993 } | |
| 3994 return TypeMaskFactory.fromNativeBehavior(behavior, _compiler); | |
| 3995 } | |
| 3996 | |
| 3997 bool isArrayType(TypeMask type) { | |
| 3998 return type.satisfies(_backend.helpers.jsArrayClass, _compiler.world); | |
| 3999 } | |
| 4000 | |
| 4001 TypeMask getTypeMaskForNativeFunction(FunctionElement function) { | |
| 4002 return _compiler.typesTask.getGuaranteedReturnTypeOfElement(function); | |
| 4003 } | |
| 4004 | |
| 4005 FieldElement locateSingleField(Selector selector, TypeMask type) { | |
| 4006 return _compiler.world.locateSingleField(selector, type); | |
| 4007 } | |
| 4008 | |
| 4009 bool fieldNeverChanges(FieldElement field) { | |
| 4010 return _compiler.world.fieldNeverChanges(field); | |
| 4011 } | |
| 4012 | |
| 4013 Element get closureConverter { | |
| 4014 return _backend.helpers.closureConverter; | |
| 4015 } | |
| 4016 | |
| 4017 void addNativeMethod(FunctionElement function) { | |
| 4018 _backend.emitter.nativeEmitter.nativeMethods.add(function); | |
| 4019 } | |
| 4020 | |
| 4021 bool get trustJSInteropTypeAnnotations => | |
| 4022 _compiler.options.trustJSInteropTypeAnnotations; | |
| 4023 | |
| 4024 bool isNative(ClassElement element) => _backend.isNative(element); | |
| 4025 | |
| 4026 bool isJsInterop(FunctionElement element) => _backend.isJsInterop(element); | |
| 4027 | |
| 4028 bool isJsInteropAnonymous(FunctionElement element) => | |
| 4029 _backend.jsInteropAnalysis.hasAnonymousAnnotation(element.contextClass); | |
| 4030 | |
| 4031 String getJsInteropTargetPath(FunctionElement element) { | |
| 4032 return '${_backend.namer.fixedBackendPath(element)}.' | |
| 4033 '${_backend.nativeData.getFixedBackendName(element)}'; | |
| 4034 } | |
| 4035 | |
| 4036 DartType get jsJavascriptObjectType => | |
| 4037 _backend.helpers.jsJavaScriptObjectClass.thisType; | |
| 4038 } | |
| OLD | NEW |
|---|
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