| // Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file |
| // for details. All rights reserved. Use of this source code is governed by a |
| // BSD-style license that can be found in the LICENSE file. |
| |
| library dart2js.js_emitter.lazy_emitter.model_emitter; |
| |
| import 'package:js_runtime/shared/embedded_names.dart' |
| show |
| CREATE_NEW_ISOLATE, |
| DEFERRED_LIBRARY_URIS, |
| DEFERRED_LIBRARY_HASHES, |
| GET_TYPE_FROM_NAME, |
| INITIALIZE_LOADED_HUNK, |
| INTERCEPTORS_BY_TAG, |
| IS_HUNK_INITIALIZED, |
| IS_HUNK_LOADED, |
| LEAF_TAGS, |
| MANGLED_GLOBAL_NAMES, |
| METADATA, |
| TYPE_TO_INTERCEPTOR_MAP, |
| TYPES; |
| |
| import '../../../compiler_new.dart'; |
| import '../../compiler.dart' show Compiler; |
| import '../../constants/values.dart' show ConstantValue, FunctionConstantValue; |
| import '../../common_elements.dart' show CommonElements; |
| import '../../elements/elements.dart' show ClassElement, MethodElement; |
| import '../../js/js.dart' as js; |
| import '../../js_backend/js_backend.dart' |
| show JavaScriptBackend, Namer, ConstantEmitter; |
| import '../../js_backend/interceptor_data.dart'; |
| import '../../world.dart'; |
| import '../constant_ordering.dart' show deepCompareConstants; |
| import '../code_emitter_task.dart'; |
| import '../js_emitter.dart' show NativeEmitter; |
| import '../js_emitter.dart' show NativeGenerator, buildTearOffCode; |
| import '../model.dart'; |
| |
| class ModelEmitter { |
| final Compiler compiler; |
| final Namer namer; |
| ConstantEmitter constantEmitter; |
| final NativeEmitter nativeEmitter; |
| final ClosedWorld _closedWorld; |
| |
| JavaScriptBackend get backend => compiler.backend; |
| |
| /// For deferred loading we communicate the initializers via this global var. |
| static const String deferredInitializersGlobal = |
| r"$__dart_deferred_initializers__"; |
| |
| static const String deferredExtension = "part.js"; |
| |
| static const String typeNameProperty = r"builtin$cls"; |
| |
| ModelEmitter(this.compiler, this.namer, this.nativeEmitter, this._closedWorld, |
| CodeEmitterTask task) { |
| this.constantEmitter = new ConstantEmitter( |
| compiler.options, |
| _closedWorld.commonElements, |
| compiler.codegenWorldBuilder, |
| _closedWorld.rtiNeed, |
| compiler.backend.rtiEncoder, |
| namer, |
| task, |
| this.generateConstantReference, |
| constantListGenerator); |
| } |
| |
| InterceptorData get _interceptorData => _closedWorld.interceptorData; |
| |
| js.Expression constantListGenerator(js.Expression array) { |
| // TODO(floitsch): remove hard-coded name. |
| return js.js('makeConstList(#)', [array]); |
| } |
| |
| js.Expression generateEmbeddedGlobalAccess(String global) { |
| return js.js(generateEmbeddedGlobalAccessString(global)); |
| } |
| |
| String generateEmbeddedGlobalAccessString(String global) { |
| // TODO(floitsch): don't use 'init' as global embedder storage. |
| return 'init.$global'; |
| } |
| |
| bool isConstantInlinedOrAlreadyEmitted(ConstantValue constant) { |
| if (constant.isFunction) return true; // Already emitted. |
| if (constant.isPrimitive) return true; // Inlined. |
| if (constant.isDummy) return true; // Inlined. |
| // The name is null when the constant is already a JS constant. |
| // TODO(floitsch): every constant should be registered, so that we can |
| // share the ones that take up too much space (like some strings). |
| if (namer.constantName(constant) == null) return true; |
| return false; |
| } |
| |
| // TODO(floitsch): copied from full emitter. Adjust or share. |
| int compareConstants(ConstantValue a, ConstantValue b) { |
| // Inlined constants don't affect the order and sometimes don't even have |
| // names. |
| int cmp1 = isConstantInlinedOrAlreadyEmitted(a) ? 0 : 1; |
| int cmp2 = isConstantInlinedOrAlreadyEmitted(b) ? 0 : 1; |
| if (cmp1 + cmp2 < 2) return cmp1 - cmp2; |
| |
| // Emit constant interceptors first. Constant interceptors for primitives |
| // might be used by code that builds other constants. See Issue 18173. |
| if (a.isInterceptor != b.isInterceptor) { |
| return a.isInterceptor ? -1 : 1; |
| } |
| |
| // Sorting by the long name clusters constants with the same constructor |
| // which compresses a tiny bit better. |
| int r = namer.constantLongName(a).compareTo(namer.constantLongName(b)); |
| if (r != 0) return r; |
| |
| // Resolve collisions in the long name by using a structural order. |
| return deepCompareConstants(a, b); |
| } |
| |
| js.Expression generateStaticClosureAccess(MethodElement element) { |
| return js.js('#.#()', [ |
| namer.globalObjectForMember(element), |
| namer.staticClosureName(element) |
| ]); |
| } |
| |
| js.Expression generateConstantReference(ConstantValue value) { |
| if (value.isFunction) { |
| FunctionConstantValue functionConstant = value; |
| return generateStaticClosureAccess(functionConstant.element); |
| } |
| |
| // We are only interested in the "isInlined" part, but it does not hurt to |
| // test for the other predicates. |
| if (isConstantInlinedOrAlreadyEmitted(value)) { |
| return constantEmitter.generate(value); |
| } |
| return js.js('#.#()', |
| [namer.globalObjectForConstant(value), namer.constantName(value)]); |
| } |
| |
| int emitProgram(Program program) { |
| List<Fragment> fragments = program.fragments; |
| MainFragment mainFragment = fragments.first; |
| Iterable<Fragment> deferredFragments = program.deferredFragments; |
| |
| int totalSize = 0; |
| |
| // We have to emit the deferred fragments first, since we need their |
| // deferred hash (which depends on the output) when emitting the main |
| // fragment. |
| List<js.Expression> fragmentsCode = deferredFragments.map((deferredUnit) { |
| js.Expression types = |
| program.metadataTypesForOutputUnit(deferredUnit.outputUnit); |
| return emitDeferredFragment(types, deferredUnit, program.holders); |
| }).toList(); |
| |
| js.Statement mainAst = emitMainFragment(program); |
| |
| js.TokenCounter counter = new js.TokenCounter(); |
| fragmentsCode.forEach(counter.countTokens); |
| counter.countTokens(mainAst); |
| |
| program.finalizers.forEach((js.TokenFinalizer f) => f.finalizeTokens()); |
| |
| // TODO(johnniwinther): Support source maps in this emitter. |
| for (int i = 0; i < fragmentsCode.length; ++i) { |
| String code = js |
| .createCodeBuffer(fragmentsCode[i], compiler.options, |
| backend.sourceInformationStrategy) |
| .getText(); |
| totalSize += code.length; |
| compiler.outputProvider.createOutputSink( |
| fragments[i + 1].outputFileName, deferredExtension, OutputType.jsPart) |
| ..add(code) |
| ..close(); |
| } |
| |
| String mainCode = js |
| .createCodeBuffer( |
| mainAst, compiler.options, backend.sourceInformationStrategy) |
| .getText(); |
| compiler.outputProvider |
| .createOutputSink(mainFragment.outputFileName, 'js', OutputType.js) |
| ..add(buildGeneratedBy(compiler)) |
| ..add(mainCode) |
| ..close(); |
| totalSize += mainCode.length; |
| |
| return totalSize; |
| } |
| |
| /// Returns a [js.Literal] that represents the string result of unparsing |
| /// [value]. |
| /// |
| /// The returned node will, when its string value is requested, pretty-print |
| /// the given [value] and, if [protectForEval] is true, wrap the resulting |
| /// string in parenthesis. The result is also escaped. |
| /// |
| /// See [_UnparsedNode] for details. |
| js.Literal unparse(Compiler compiler, js.Node value, |
| {bool protectForEval: true}) { |
| return new js.UnparsedNode(value, compiler.options, protectForEval); |
| } |
| |
| String buildGeneratedBy(compiler) { |
| var suffix = ''; |
| if (compiler.options.hasBuildId) { |
| suffix = ' version: ${compiler.options.buildId}'; |
| } |
| return '// Generated by dart2js, the Dart to JavaScript compiler$suffix.\n'; |
| } |
| |
| js.Statement emitMainFragment(Program program) { |
| MainFragment fragment = program.fragments.first; |
| List<js.Expression> elements = fragment.libraries.map(emitLibrary).toList(); |
| elements.add( |
| emitLazilyInitializedStatics(fragment.staticLazilyInitializedFields)); |
| elements.add(emitConstants(fragment.constants)); |
| |
| js.Expression code = new js.ArrayInitializer(elements); |
| |
| Map<String, dynamic> holes = { |
| 'deferredInitializer': emitDeferredInitializerGlobal(program.loadMap), |
| 'holders': emitHolders(program.holders), |
| 'tearOff': buildTearOffCode(compiler.options, backend.emitter.emitter, |
| backend.namer, _closedWorld.commonElements), |
| 'parseFunctionDescriptor': |
| js.js.statement(parseFunctionDescriptorBoilerplate, { |
| 'argumentCount': js.string(namer.requiredParameterField), |
| 'defaultArgumentValues': js.string(namer.defaultValuesField), |
| 'callName': js.string(namer.callNameField) |
| }), |
| 'cyclicThrow': backend.emitter |
| .staticFunctionAccess(_closedWorld.commonElements.cyclicThrowHelper), |
| 'outputContainsConstantList': program.outputContainsConstantList, |
| 'embeddedGlobals': emitEmbeddedGlobals(program), |
| 'readMetadataTypeFunction': readMetadataTypeFunction, |
| 'staticNonFinals': |
| emitStaticNonFinalFields(fragment.staticNonFinalFields), |
| 'operatorIsPrefix': js.string(namer.operatorIsPrefix), |
| 'callName': js.string(namer.callNameField), |
| 'argumentCount': js.string(namer.requiredParameterField), |
| 'defaultArgumentValues': js.string(namer.defaultValuesField), |
| 'eagerClasses': emitEagerClassInitializations(fragment.libraries), |
| 'invokeMain': fragment.invokeMain, |
| 'code': code |
| }; |
| |
| holes.addAll(nativeHoles(program)); |
| |
| return js.js.statement(boilerplate, holes); |
| } |
| |
| Map<String, dynamic> nativeHoles(Program program) { |
| Map<String, dynamic> nativeHoles = <String, dynamic>{}; |
| |
| js.Statement nativeIsolateAffinityTagInitialization; |
| if (NativeGenerator |
| .needsIsolateAffinityTagInitialization(_closedWorld.backendUsage)) { |
| nativeIsolateAffinityTagInitialization = |
| NativeGenerator.generateIsolateAffinityTagInitialization( |
| _closedWorld.backendUsage, |
| generateEmbeddedGlobalAccess, |
| // TODO(floitsch): internStringFunction. |
| js.js("(function(x) { return x; })", [])); |
| } else { |
| nativeIsolateAffinityTagInitialization = js.js.statement(";"); |
| } |
| nativeHoles['nativeIsolateAffinityTagInitialization'] = |
| nativeIsolateAffinityTagInitialization; |
| |
| js.Expression nativeInfoAccess = js.js('nativeInfo', []); |
| js.Expression constructorAccess = js.js('constructor', []); |
| Function subclassReadGenerator = (js.Expression subclass) { |
| return js.js('holdersMap[#][#].ensureResolved()', [subclass, subclass]); |
| }; |
| js.Expression interceptorsByTagAccess = |
| generateEmbeddedGlobalAccess(INTERCEPTORS_BY_TAG); |
| js.Expression leafTagsAccess = generateEmbeddedGlobalAccess(LEAF_TAGS); |
| js.Statement nativeInfoHandler = NativeGenerator.buildNativeInfoHandler( |
| nativeInfoAccess, |
| constructorAccess, |
| subclassReadGenerator, |
| interceptorsByTagAccess, |
| leafTagsAccess); |
| |
| nativeHoles['needsNativeSupport'] = program.needsNativeSupport; |
| nativeHoles['needsNoNativeSupport'] = !program.needsNativeSupport; |
| nativeHoles['nativeInfoHandler'] = nativeInfoHandler; |
| |
| return nativeHoles; |
| } |
| |
| js.Block emitHolders(List<Holder> holders) { |
| // The top-level variables for holders must *not* be renamed by the |
| // JavaScript pretty printer because a lot of code already uses the |
| // non-renamed names. The generated code looks like this: |
| // |
| // var H = {}, ..., G = {}; |
| // var holders = [ H, ..., G ]; |
| // |
| // and it is inserted at the top of the top-level function expression |
| // that covers the entire program. |
| |
| List<js.Statement> statements = [ |
| new js.ExpressionStatement(new js.VariableDeclarationList(holders |
| .map((e) => new js.VariableInitialization( |
| new js.VariableDeclaration(e.name, allowRename: false), |
| new js.ObjectInitializer(const []))) |
| .toList())), |
| js.js.statement( |
| 'var holders = #', |
| new js.ArrayInitializer(holders |
| .map((e) => new js.VariableUse(e.name)) |
| .toList(growable: false))), |
| js.js.statement('var holdersMap = Object.create(null)') |
| ]; |
| return new js.Block(statements); |
| } |
| |
| js.Block emitEmbeddedGlobals(Program program) { |
| List<js.Property> globals = <js.Property>[]; |
| |
| if (program.loadMap.isNotEmpty) { |
| globals.addAll(emitEmbeddedGlobalsForDeferredLoading(program.loadMap)); |
| } |
| |
| if (program.typeToInterceptorMap != null) { |
| globals.add(new js.Property( |
| js.string(TYPE_TO_INTERCEPTOR_MAP), program.typeToInterceptorMap)); |
| } |
| |
| if (program.hasIsolateSupport) { |
| String isolateName = namer.staticStateHolder; |
| globals.add(new js.Property(js.string(CREATE_NEW_ISOLATE), |
| js.js('function () { return $isolateName; }'))); |
| // TODO(floitsch): add remaining isolate functions. |
| } |
| |
| globals.add(emitMangledGlobalNames()); |
| |
| globals.add(emitGetTypeFromName()); |
| |
| globals.addAll(emitMetadata(program)); |
| |
| if (program.needsNativeSupport) { |
| globals.add(new js.Property( |
| js.string(INTERCEPTORS_BY_TAG), js.js('Object.create(null)', []))); |
| globals.add(new js.Property( |
| js.string(LEAF_TAGS), js.js('Object.create(null)', []))); |
| } |
| |
| js.ObjectInitializer globalsObject = new js.ObjectInitializer(globals); |
| |
| List<js.Statement> statements = [ |
| new js.ExpressionStatement(new js.VariableDeclarationList([ |
| new js.VariableInitialization( |
| new js.VariableDeclaration("init", allowRename: false), |
| globalsObject) |
| ])) |
| ]; |
| return new js.Block(statements); |
| } |
| |
| js.Property emitMangledGlobalNames() { |
| List<js.Property> names = <js.Property>[]; |
| |
| CommonElements commonElements = _closedWorld.commonElements; |
| // We want to keep the original names for the most common core classes when |
| // calling toString on them. |
| List<ClassElement> nativeClassesNeedingUnmangledName = [ |
| commonElements.intClass, |
| commonElements.doubleClass, |
| commonElements.numClass, |
| commonElements.stringClass, |
| commonElements.boolClass, |
| commonElements.nullClass, |
| commonElements.listClass |
| ]; |
| nativeClassesNeedingUnmangledName.forEach((element) { |
| names.add(new js.Property( |
| js.quoteName(namer.className(element)), js.string(element.name))); |
| }); |
| |
| return new js.Property( |
| js.string(MANGLED_GLOBAL_NAMES), new js.ObjectInitializer(names)); |
| } |
| |
| js.Statement emitDeferredInitializerGlobal(Map loadMap) { |
| if (loadMap.isEmpty) return new js.Block.empty(); |
| |
| return js.js.statement(""" |
| if (typeof($deferredInitializersGlobal) === 'undefined') |
| var $deferredInitializersGlobal = Object.create(null);"""); |
| } |
| |
| Iterable<js.Property> emitEmbeddedGlobalsForDeferredLoading( |
| Map<String, List<Fragment>> loadMap) { |
| List<js.Property> globals = <js.Property>[]; |
| |
| js.ArrayInitializer fragmentUris(List<Fragment> fragments) { |
| return js.stringArray(fragments |
| .map((fragment) => "${fragment.outputFileName}.$deferredExtension")); |
| } |
| |
| js.ArrayInitializer fragmentHashes(List<Fragment> fragments) { |
| // TODO(floitsch): the hash must depend on the generated code. |
| return js.numArray(fragments.map((fragment) => fragment.hashCode)); |
| } |
| |
| List<js.Property> uris = new List<js.Property>(loadMap.length); |
| List<js.Property> hashes = new List<js.Property>(loadMap.length); |
| int count = 0; |
| loadMap.forEach((String loadId, List<Fragment> fragmentList) { |
| uris[count] = |
| new js.Property(js.string(loadId), fragmentUris(fragmentList)); |
| hashes[count] = |
| new js.Property(js.string(loadId), fragmentHashes(fragmentList)); |
| count++; |
| }); |
| |
| globals.add(new js.Property( |
| js.string(DEFERRED_LIBRARY_URIS), new js.ObjectInitializer(uris))); |
| globals.add(new js.Property( |
| js.string(DEFERRED_LIBRARY_HASHES), new js.ObjectInitializer(hashes))); |
| |
| js.Expression isHunkLoadedFunction = |
| js.js("function(hash) { return !!$deferredInitializersGlobal[hash]; }"); |
| globals |
| .add(new js.Property(js.string(IS_HUNK_LOADED), isHunkLoadedFunction)); |
| |
| js.Expression isHunkInitializedFunction = |
| js.js("function(hash) { return false; }"); |
| globals.add(new js.Property( |
| js.string(IS_HUNK_INITIALIZED), isHunkInitializedFunction)); |
| |
| js.Expression typesAccess = generateEmbeddedGlobalAccess(TYPES); |
| |
| /// See [emitEmbeddedGlobalsForDeferredLoading] for the format of the |
| /// deferred hunk. |
| js.Expression initializeLoadedHunkFunction = js.js(""" |
| function(hash) { |
| var hunk = $deferredInitializersGlobal[hash]; |
| $setupProgramName(hunk[0], #typesAccess.length); |
| eval(hunk[1]); |
| var deferredTypes = eval(hunk[2]); |
| #typesAccess.push.apply(#typesAccess, deferredTypes); |
| }""", {'typesAccess': typesAccess}); |
| |
| globals.add(new js.Property( |
| js.string(INITIALIZE_LOADED_HUNK), initializeLoadedHunkFunction)); |
| |
| return globals; |
| } |
| |
| js.Property emitGetTypeFromName() { |
| js.Expression function = js.js("""function(name) { |
| return holdersMap[name][name].ensureResolved(); |
| }"""); |
| return new js.Property(js.string(GET_TYPE_FROM_NAME), function); |
| } |
| |
| static final String readMetadataTypeName = "readMetadataType"; |
| |
| js.Statement get readMetadataTypeFunction { |
| // Types are non-evaluated and must be compiled at first use. |
| // Compiled strings are guaranteed not to be strings, and it's thus safe |
| // to use a type-test to determine if a type has already been compiled. |
| return js.js.statement('''function $readMetadataTypeName(index) { |
| var type = #typesAccess[index]; |
| if (typeof type == 'string') { |
| type = expressionCompile(type); |
| #typesAccess[index] = type; |
| } |
| return type; |
| }''', {"typesAccess": generateEmbeddedGlobalAccess(TYPES)}); |
| } |
| |
| js.Template get templateForReadType { |
| // TODO(floitsch): make sure that no local variable shadows the access to |
| // the readMetadataType function. |
| return js.js.expressionTemplateFor('$readMetadataTypeName(#)'); |
| } |
| |
| static final String readMetadataName = "readLazyMetadata"; |
| static final String lazyMetadataName = "lazy_$METADATA"; |
| |
| js.Statement get readMetadataFunction { |
| // Types are non-evaluated and must be compiled at first use. |
| // Compiled strings are guaranteed not to be strings, and it's thus safe |
| // to use a type-test to determine if a type has already been compiled. |
| return js.js.statement('''function $readMetadataName(index) { |
| var lazyMetadata = #lazyMetadataAccess[index]; |
| if (typeof lazyMetadata == 'string') { |
| #metadataAccess[index] = expressionCompile(lazyMetadata); |
| #lazyMetadataAccess[index] = null; |
| } |
| return #metadataAccess[index]; |
| }''', { |
| "lazyMetadataAccess": generateEmbeddedGlobalAccess(lazyMetadataName), |
| "metadataAccess": generateEmbeddedGlobalAccess(METADATA) |
| }); |
| } |
| |
| js.Template get templateForReadMetadata { |
| // TODO(floitsch): make sure that no local variable shadows the access to |
| // the readMetadata function. |
| return js.js.expressionTemplateFor('$readMetadataName(#)'); |
| } |
| |
| List<js.Property> emitMetadata(Program program) { |
| List<js.Property> metadataGlobals = <js.Property>[]; |
| |
| js.Property createGlobal(js.Expression metadata, String global) { |
| return new js.Property(js.string(global), metadata); |
| } |
| |
| metadataGlobals.add(createGlobal(program.metadata, METADATA)); |
| js.Expression types = |
| program.metadataTypesForOutputUnit(program.mainFragment.outputUnit); |
| metadataGlobals.add(createGlobal(types, TYPES)); |
| |
| return metadataGlobals; |
| } |
| |
| js.Expression emitDeferredFragment(js.Expression deferredTypes, |
| DeferredFragment fragment, List<Holder> holders) { |
| // TODO(floitsch): initialize eager classes. |
| // TODO(floitsch): the hash must depend on the output. |
| int hash = fragment.hashCode; |
| |
| List<js.Expression> deferredCode = |
| fragment.libraries.map(emitLibrary).toList(); |
| |
| deferredCode.add( |
| emitLazilyInitializedStatics(fragment.staticLazilyInitializedFields)); |
| deferredCode.add(emitConstants(fragment.constants)); |
| |
| js.ArrayInitializer deferredArray = new js.ArrayInitializer(deferredCode); |
| |
| // This is the code that must be evaluated after all deferred classes have |
| // been setup. |
| js.Statement immediateCode = new js.Block([ |
| emitStaticNonFinalFields(fragment.staticNonFinalFields), |
| emitEagerClassInitializations(fragment.libraries) |
| ]); |
| |
| js.Literal immediateString = unparse(compiler, immediateCode); |
| |
| js.ArrayInitializer hunk = new js.ArrayInitializer( |
| [deferredArray, immediateString, deferredTypes]); |
| |
| return js.js("$deferredInitializersGlobal[$hash] = #", hunk); |
| } |
| |
| // This string should be referenced wherever JavaScript code makes assumptions |
| // on the constants format. |
| static final String constantsDescription = |
| "The constants are encoded as a follows:" |
| " [constantsHolderIndex, name, code, name2, code2, ...]." |
| "The array is completely empty if there is no constant at all."; |
| |
| js.ArrayInitializer emitConstants(List<Constant> constants) { |
| List<js.Expression> data = <js.Expression>[]; |
| if (constants.isNotEmpty) { |
| int holderIndex = constants.first.holder.index; |
| data.add(js.number(holderIndex)); |
| data.addAll(constants.expand((Constant constant) { |
| assert(constant.holder.index == holderIndex); |
| js.Expression code = constantEmitter.generate(constant.value); |
| return [js.quoteName(constant.name), unparse(compiler, code)]; |
| })); |
| } |
| return new js.ArrayInitializer(data); |
| } |
| |
| js.Block emitStaticNonFinalFields(List<StaticField> fields) { |
| Iterable<js.Statement> statements = fields.map((StaticField field) { |
| return js.js |
| .statement("#.# = #;", [field.holder.name, field.name, field.code]); |
| }); |
| return new js.Block(statements.toList()); |
| } |
| |
| js.Expression emitLazilyInitializedStatics(List<StaticField> fields) { |
| Iterable fieldDescriptors = fields.expand((field) => [ |
| js.quoteName(field.name), |
| js.quoteName(namer.deriveLazyInitializerName(field.name)), |
| js.number(field.holder.index), |
| emitLazyInitializer(field) |
| ]); |
| return new js.ArrayInitializer(fieldDescriptors.toList(growable: false)); |
| } |
| |
| js.Block emitEagerClassInitializations(List<Library> libraries) { |
| js.Statement createInstantiation(Class cls) { |
| return js.js.statement('new #.#()', [cls.holder.name, cls.name]); |
| } |
| |
| List<js.Statement> instantiations = libraries |
| .expand((Library library) => library.classes) |
| .where((Class cls) => cls.isEager) |
| .map(createInstantiation) |
| .toList(growable: false); |
| return new js.Block(instantiations); |
| } |
| |
| // This string should be referenced wherever JavaScript code makes assumptions |
| // on the mixin format. |
| static final String nativeInfoDescription = "A class is encoded as follows:" |
| " [name, class-code, holder-index], or " |
| " [name, class-code, native-info, holder-index]."; |
| |
| js.Expression emitLibrary(Library library) { |
| Iterable staticDescriptors = library.statics.expand(emitStaticMethod); |
| |
| Iterable classDescriptors = library.classes.expand((Class cls) { |
| js.Literal name = js.quoteName(cls.name); |
| js.LiteralNumber holderIndex = js.number(cls.holder.index); |
| js.Expression emittedClass = emitClass(cls); |
| js.Expression nativeInfo = NativeGenerator.encodeNativeInfo(cls); |
| if (nativeInfo == null) { |
| return [name, emittedClass, holderIndex]; |
| } else { |
| return [name, emittedClass, nativeInfo, holderIndex]; |
| } |
| }); |
| |
| js.Expression staticArray = |
| new js.ArrayInitializer(staticDescriptors.toList(growable: false)); |
| js.Expression classArray = |
| new js.ArrayInitializer(classDescriptors.toList(growable: false)); |
| |
| return new js.ArrayInitializer([staticArray, classArray]); |
| } |
| |
| js.Expression _generateConstructor(Class cls) { |
| List<js.Name> fieldNames = const <js.Name>[]; |
| |
| // If the class is not directly instantiated we only need it for inheritance |
| // or RTI. In either case we don't need its fields. |
| if (cls.isDirectlyInstantiated && !cls.isNative) { |
| fieldNames = cls.fields.map((Field field) => field.name).toList(); |
| if (cls.hasRtiField) { |
| fieldNames.add(namer.rtiFieldJsName); |
| } |
| } |
| js.Name name = cls.name; |
| |
| Iterable<js.Name> assignments = fieldNames.map((js.Name field) { |
| return js.js("this.#field = #field", {"field": field}); |
| }); |
| |
| return js.js('function #(#) { # }', [name, fieldNames, assignments]); |
| } |
| |
| Method _generateGetter(Field field) { |
| String getterTemplateFor(int flags) { |
| switch (flags) { |
| case 1: |
| return "function() { return this[#]; }"; |
| case 2: |
| return "function(receiver) { return receiver[#]; }"; |
| case 3: |
| return "function(receiver) { return this[#]; }"; |
| } |
| return null; |
| } |
| |
| js.Expression fieldName = js.quoteName(field.name); |
| js.Expression code = js.js(getterTemplateFor(field.getterFlags), fieldName); |
| js.Name getterName = namer.deriveGetterName(field.accessorName); |
| return new StubMethod(getterName, code); |
| } |
| |
| Method _generateSetter(Field field) { |
| String setterTemplateFor(int flags) { |
| switch (flags) { |
| case 1: |
| return "function(val) { return this[#] = val; }"; |
| case 2: |
| return "function(receiver, val) { return receiver[#] = val; }"; |
| case 3: |
| return "function(receiver, val) { return this[#] = val; }"; |
| } |
| return null; |
| } |
| |
| js.Expression fieldName = js.quoteName(field.name); |
| js.Expression code = js.js(setterTemplateFor(field.setterFlags), fieldName); |
| js.Name setterName = namer.deriveSetterName(field.accessorName); |
| return new StubMethod(setterName, code); |
| } |
| |
| Iterable<Method> _generateGettersSetters(Class cls) { |
| Iterable<Method> getters = cls.fields |
| .where((Field field) => field.needsGetter) |
| .map(_generateGetter); |
| |
| Iterable<Method> setters = cls.fields |
| .where((Field field) => field.needsUncheckedSetter) |
| .map(_generateSetter); |
| |
| return [getters, setters].expand((x) => x); |
| } |
| |
| // This string should be referenced wherever JavaScript code makes assumptions |
| // on the mixin format. |
| static final String mixinFormatDescription = |
| "Mixins have a reference to their mixin class at the place of the usual" |
| "constructor. If they are instantiated the constructor follows the" |
| "reference."; |
| |
| js.Expression emitClass(Class cls) { |
| List elements = [ |
| js.quoteName(cls.superclassName, allowNull: true), |
| js.number(cls.superclassHolderIndex) |
| ]; |
| |
| if (cls.isMixinApplication) { |
| MixinApplication mixin = cls; |
| elements.add(js.quoteName(mixin.mixinClass.name)); |
| elements.add(js.number(mixin.mixinClass.holder.index)); |
| if (cls.isDirectlyInstantiated) { |
| elements.add(_generateConstructor(cls)); |
| } |
| } else { |
| elements.add(_generateConstructor(cls)); |
| } |
| Iterable<Method> methods = cls.methods; |
| Iterable<Method> isChecks = cls.isChecks; |
| Iterable<Method> callStubs = cls.callStubs; |
| Iterable<Method> noSuchMethodStubs = cls.noSuchMethodStubs; |
| Iterable<Method> gettersSetters = _generateGettersSetters(cls); |
| Iterable<Method> allMethods = [ |
| methods, |
| isChecks, |
| callStubs, |
| noSuchMethodStubs, |
| gettersSetters |
| ].expand((x) => x); |
| elements.addAll(allMethods.expand(emitInstanceMethod)); |
| |
| return unparse(compiler, new js.ArrayInitializer(elements)); |
| } |
| |
| js.Expression emitLazyInitializer(StaticField field) { |
| assert(field.isLazy); |
| return unparse(compiler, field.code); |
| } |
| |
| /// JavaScript code template that implements parsing of a function descriptor. |
| /// Descriptors are used in place of the actual JavaScript function |
| /// definition in the output if additional information needs to be passed to |
| /// facilitate the generation of tearOffs at runtime. The format is an array |
| /// with the following fields: |
| /// |
| /// * [InstanceMethod.aliasName] (optional). |
| /// * [Method.code] |
| /// * [DartMethod.callName] |
| /// * isInterceptedMethod (optional, present if [DartMethod.needsTearOff]). |
| /// * [DartMethod.tearOffName] (optional, present if |
| /// [DartMethod.needsTearOff]). |
| /// * functionType (optional, present if [DartMethod.needsTearOff]). |
| /// |
| /// followed by |
| /// |
| /// * [ParameterStubMethod.name] |
| /// * [ParameterStubMethod.callName] |
| /// * [ParameterStubMethod.code] |
| /// |
| /// for each stub in [DartMethod.parameterStubs]. |
| /// |
| /// If the closure could be used in `Function.apply` (i.e. |
| /// [DartMethod.canBeApplied] is true) then the following fields are appended: |
| /// |
| /// * [DartMethod.requiredParameterCount] |
| /// * [DartMethod.optionalParameterDefaultValues] |
| |
| static final String parseFunctionDescriptorBoilerplate = r""" |
| function parseFunctionDescriptor(proto, name, descriptor, typesOffset) { |
| if (descriptor instanceof Array) { |
| // 'pos' points to the last read entry. |
| var f, pos = -1; |
| var aliasOrFunction = descriptor[++pos]; |
| if (typeof aliasOrFunction == "string") { |
| // Install the alias for super calls on the prototype chain. |
| proto[aliasOrFunction] = f = descriptor[++pos]; |
| } else { |
| f = aliasOrFunction; |
| } |
| |
| proto[name] = f; |
| var funs = [f]; |
| f[#callName] = descriptor[++pos]; |
| |
| var isInterceptedOrParameterStubName = descriptor[pos + 1]; |
| var isIntercepted, tearOffName, reflectionInfo; |
| if (typeof isInterceptedOrParameterStubName == "boolean") { |
| isIntercepted = descriptor[++pos]; |
| tearOffName = descriptor[++pos]; |
| reflectionInfo = descriptor[++pos]; |
| if (typeof reflectionInfo == "number") { |
| reflectionInfo = reflectionInfo + typesOffset; |
| } |
| } |
| |
| // We iterate in blocks of 3 but have to stop before we reach the (optional) |
| // two trailing items. To accomplish this, we only iterate until we reach |
| // length - 2. |
| for (++pos; pos < descriptor.length - 2; pos += 3) { |
| var stub = descriptor[pos + 2]; |
| stub[#callName] = descriptor[pos + 1]; |
| proto[descriptor[pos]] = stub; |
| funs.push(stub); |
| } |
| |
| if (tearOffName) { |
| proto[tearOffName] = |
| tearOff(funs, reflectionInfo, false, name, isIntercepted); |
| } |
| if (pos < descriptor.length) { |
| f[#argumentCount] = descriptor[pos]; |
| f[#defaultArgumentValues] = descriptor[pos + 1]; |
| } |
| } else { |
| proto[name] = descriptor; |
| } |
| } |
| """; |
| |
| js.Expression _encodeOptionalParameterDefaultValues(DartMethod method) { |
| // TODO(herhut): Replace [js.LiteralNull] with [js.ArrayHole]. |
| if (method.optionalParameterDefaultValues is List) { |
| List<ConstantValue> defaultValues = method.optionalParameterDefaultValues; |
| Iterable<js.Expression> elements = |
| defaultValues.map(generateConstantReference); |
| return new js.ArrayInitializer(elements.toList()); |
| } else { |
| Map<String, ConstantValue> defaultValues = |
| method.optionalParameterDefaultValues; |
| List<js.Property> properties = <js.Property>[]; |
| defaultValues.forEach((String name, ConstantValue value) { |
| properties.add( |
| new js.Property(js.string(name), generateConstantReference(value))); |
| }); |
| return new js.ObjectInitializer(properties); |
| } |
| } |
| |
| Iterable<js.Expression> emitInstanceMethod(Method method) { |
| List<js.Expression> makeNameCodePair(Method method) { |
| return [js.quoteName(method.name), method.code]; |
| } |
| |
| List<js.Expression> makeNameCallNameCodeTriplet(ParameterStubMethod stub) { |
| js.Expression callName = stub.callName == null |
| ? new js.LiteralNull() |
| : js.quoteName(stub.callName); |
| return [js.quoteName(stub.name), callName, stub.code]; |
| } |
| |
| if (method is InstanceMethod) { |
| if (method.needsTearOff || method.aliasName != null) { |
| /// See [parseFunctionDescriptorBoilerplate] for a full description of |
| /// the format. |
| // [name, [aliasName, function, callName, isIntercepted, tearOffName, |
| // functionType, stub1_name, stub1_callName, stub1_code, ...] |
| var data = []; |
| if (method.aliasName != null) { |
| data.add(js.quoteName(method.aliasName)); |
| } |
| data.add(method.code); |
| data.add(js.quoteName(method.callName, allowNull: true)); |
| |
| if (method.needsTearOff) { |
| MethodElement element = method.element; |
| bool isIntercepted = _interceptorData.isInterceptedMethod(element); |
| data.add(new js.LiteralBool(isIntercepted)); |
| data.add(js.quoteName(method.tearOffName)); |
| data.add((method.functionType)); |
| } |
| |
| data.addAll(method.parameterStubs.expand(makeNameCallNameCodeTriplet)); |
| if (method.canBeApplied) { |
| data.add(js.number(method.requiredParameterCount)); |
| data.add(_encodeOptionalParameterDefaultValues(method)); |
| } |
| return [js.quoteName(method.name), new js.ArrayInitializer(data)]; |
| } else { |
| // TODO(floitsch): not the most efficient way... |
| return (<dynamic>[method]..addAll(method.parameterStubs)) |
| .expand(makeNameCodePair); |
| } |
| } else { |
| return makeNameCodePair(method); |
| } |
| } |
| |
| Iterable<js.Expression> emitStaticMethod(StaticMethod method) { |
| js.Expression holderIndex = js.number(method.holder.index); |
| List<js.Expression> output = <js.Expression>[]; |
| |
| void _addMethod(Method method) { |
| js.Expression unparsed = unparse(compiler, method.code); |
| output.add(js.quoteName(method.name)); |
| output.add(holderIndex); |
| output.add(unparsed); |
| } |
| |
| List<js.Expression> makeNameCallNameCodeTriplet(ParameterStubMethod stub) { |
| js.Expression callName = stub.callName == null |
| ? new js.LiteralNull() |
| : js.quoteName(stub.callName); |
| return [js.quoteName(stub.name), callName, unparse(compiler, stub.code)]; |
| } |
| |
| _addMethod(method); |
| // TODO(floitsch): can there be anything else than a StaticDartMethod? |
| if (method is StaticDartMethod) { |
| if (method.needsTearOff) { |
| /// The format emitted is the same as for the parser specified at |
| /// [parseFunctionDescriptorBoilerplate] except for the missing |
| /// field whether the method is intercepted. |
| // [name, [function, callName, tearOffName, functionType, |
| // stub1_name, stub1_callName, stub1_code, ...] |
| var data = <js.Expression>[unparse(compiler, method.code)]; |
| data.add(js.quoteName(method.callName)); |
| data.add(js.quoteName(method.tearOffName)); |
| data.add(method.functionType); |
| data.addAll(method.parameterStubs.expand(makeNameCallNameCodeTriplet)); |
| if (method.canBeApplied) { |
| data.add(js.number(method.requiredParameterCount)); |
| data.add(_encodeOptionalParameterDefaultValues(method)); |
| } |
| return [ |
| js.quoteName(method.name), |
| holderIndex, |
| new js.ArrayInitializer(data) |
| ]; |
| } else { |
| method.parameterStubs.forEach(_addMethod); |
| } |
| } |
| return output; |
| } |
| |
| static final String setupProgramName = "setupProgram"; |
| |
| static final String boilerplate = """ |
| { |
| // Declare deferred-initializer global. |
| #deferredInitializer; |
| |
| (function(start, program) { |
| // Initialize holder objects. |
| #holders; |
| var nativeInfos = Object.create(null); |
| |
| // Counter to generate unique names for tear offs. |
| var functionCounter = 0; |
| |
| function $setupProgramName(program, typesOffset) { |
| for (var i = 0; i < program.length - 2; i++) { |
| setupLibrary(program[i], typesOffset); |
| } |
| setupLazyStatics(program[i]); |
| setupConstants(program[i + 1]); |
| } |
| |
| function setupLibrary(library, typesOffset) { |
| var statics = library[0]; |
| for (var i = 0; i < statics.length; i += 3) { |
| var holderIndex = statics[i + 1]; |
| setupStatic(statics[i], holders[holderIndex], statics[i + 2], |
| typesOffset); |
| } |
| |
| var classes = library[1]; |
| for (var i = 0; i < classes.length; i += 3) { |
| var name = classes[i]; |
| var cls = classes[i + 1]; |
| |
| if (#needsNativeSupport) { |
| // $nativeInfoDescription. |
| var indexOrNativeInfo = classes[i + 2]; |
| if (typeof indexOrNativeInfo == "number") { |
| var holderIndex = classes[i + 2]; |
| } else { |
| nativeInfos[name] = indexOrNativeInfo; |
| holderIndex = classes[i + 3]; |
| i++; |
| } |
| } |
| |
| if (#needsNoNativeSupport) { |
| var holderIndex = classes[i + 2]; |
| } |
| |
| holdersMap[name] = holders[holderIndex]; |
| setupClass(name, holders[holderIndex], cls, typesOffset); |
| } |
| } |
| |
| function setupLazyStatics(statics) { |
| for (var i = 0; i < statics.length; i += 4) { |
| var name = statics[i]; |
| var getterName = statics[i + 1]; |
| var holderIndex = statics[i + 2]; |
| var initializer = statics[i + 3]; |
| setupLazyStatic(name, getterName, holders[holderIndex], initializer); |
| } |
| } |
| |
| function setupConstants(constants) { |
| // $constantsDescription. |
| if (constants.length == 0) return; |
| // We assume that all constants are in the same holder. |
| var holder = holders[constants[0]]; |
| for (var i = 1; i < constants.length; i += 2) { |
| var name = constants[i]; |
| var initializer = constants[i + 1]; |
| setupConstant(name, holder, initializer); |
| } |
| } |
| |
| function setupStatic(name, holder, descriptor, typesOffset) { |
| if (typeof descriptor == 'string') { |
| holder[name] = function() { |
| if (descriptor == null) { |
| // Already compiled. This happens when we have calls to the static as |
| // arguments to the static: `foo(foo(499))`; |
| return holder[name].apply(this, arguments); |
| } |
| var method = compile(name, descriptor); |
| holder[name] = method; |
| descriptor = null; // GC the descriptor. |
| return method.apply(this, arguments); |
| }; |
| } else { |
| // Parse the tear off information and generate compile handlers. |
| // TODO(herhut): Share parser with instance methods. |
| function compileAllStubs(typesOffset) { |
| var funs; |
| var fun = compile(name, descriptor[0]); |
| fun[#callName] = descriptor[1]; |
| holder[name] = fun; |
| funs = [fun]; |
| // We iterate in blocks of 3 but have to stop before we reach the |
| // (optional) two trailing items. To accomplish this, we only iterate |
| // until we reach length - 2. |
| for (var pos = 4; pos < descriptor.length - 2; pos += 3) { |
| var stubName = descriptor[pos]; |
| fun = compile(stubName, descriptor[pos + 2]); |
| fun[#callName] = descriptor[pos + 1]; |
| holder[stubName] = fun; |
| funs.push(fun); |
| } |
| if (descriptor[2] != null) { // tear-off name. |
| // functions, reflectionInfo, isStatic, name, isIntercepted. |
| var reflectionInfo = descriptor[3]; |
| if (typeof reflectionInfo == "number") { |
| reflectionInfo = reflectionInfo + typesOffset; |
| } |
| holder[descriptor[2]] = |
| tearOff(funs, reflectionInfo, true, name, false); |
| } |
| if (pos < descriptor.length) { |
| fun[#argumentCount] = descriptor[pos]; |
| fun[#defaultArgumentValues] = descriptor[pos + 1]; |
| } |
| } |
| |
| function setupCompileAllAndDelegateStub(name, typesOffset) { |
| holder[name] = function() { |
| // The descriptor is null if we already compiled this function. This |
| // happens when we have calls to the static as arguments to the |
| // static: `foo(foo(499))`; |
| if (descriptor != null) { |
| compileAllStubs(typesOffset); |
| descriptor = null; // GC the descriptor. |
| } |
| return holder[name].apply(this, arguments); |
| }; |
| } |
| |
| setupCompileAllAndDelegateStub(name, typesOffset); |
| for (var pos = 4; pos < descriptor.length; pos += 3) { |
| setupCompileAllAndDelegateStub(descriptor[pos], typesOffset); |
| } |
| if (descriptor[2] != null) { // tear-off name. |
| setupCompileAllAndDelegateStub(descriptor[2], typesOffset) |
| } |
| } |
| } |
| |
| function setupLazyStatic(name, getterName, holder, descriptor) { |
| holder[name] = null; |
| holder[getterName] = function() { |
| var initializer = compile(name, descriptor); |
| holder[getterName] = function() { #cyclicThrow(name) }; |
| var result; |
| var sentinelInProgress = descriptor; |
| try { |
| result = holder[name] = sentinelInProgress; |
| result = holder[name] = initializer(); |
| } finally { |
| // Use try-finally, not try-catch/throw as it destroys the stack trace. |
| if (result === sentinelInProgress) { |
| // The lazy static (holder[name]) might have been set to a different |
| // value. According to spec we still have to reset it to null, if the |
| // initialization failed. |
| holder[name] = null; |
| } |
| // TODO(floitsch): the function should probably be unique for each |
| // static. |
| holder[getterName] = function() { return this[name]; }; |
| } |
| return result; |
| }; |
| } |
| |
| function setupConstant(name, holder, descriptor) { |
| var c; |
| holder[name] = function() { |
| if (descriptor !== null) { |
| c = compile(name, descriptor); |
| name = null; |
| descriptor = null; |
| } |
| return c; |
| }; |
| } |
| |
| function setupClass(name, holder, descriptor, typesOffset) { |
| var patch = function() { |
| if (patch.ensureResolved == patch) { |
| // We have not yet been compiled. |
| var constructor = compileConstructor(name, descriptor, typesOffset); |
| holder[name] = constructor; |
| name = holder = descriptor = null; // GC the captured arguments. |
| // Make sure we can invoke 'ensureResolved' multiple times on the patch |
| // function. |
| patch.ensureResolved = function() { return constructor; }; |
| constructor.ensureResolved = function() { return this; }; |
| } else { |
| // This can happen when arguments to the constructor are of the same |
| // class, like in `new A(new A(null))`. |
| constructor = patch.ensureResolved(); |
| } |
| // If the patch has been called as "ensureResolved" return. |
| if (this === patch) return constructor; |
| var object = new constructor(); |
| constructor.apply(object, arguments); |
| return object; |
| }; |
| |
| // We store the patch function on itself to make it |
| // possible to resolve superclass references without constructing instances. |
| patch.ensureResolved = patch; |
| holder[name] = patch; |
| } |
| |
| #tearOff; |
| |
| #parseFunctionDescriptor; |
| |
| function compileConstructor(name, descriptor, typesOffset) { |
| descriptor = compile(name, descriptor); |
| var prototype = determinePrototype(descriptor); |
| var constructor; |
| var functionsIndex; |
| // $mixinFormatDescription. |
| if (typeof descriptor[2] !== 'function') { |
| fillPrototypeWithMixedIn(descriptor[2], descriptor[3], prototype); |
| // descriptor[4] contains the constructor if the mixin application is |
| // directly instantiated. |
| if (typeof descriptor[4] === 'function') { |
| constructor = descriptor[4]; |
| functionsIndex = 5; |
| } else { |
| constructor = function() {}; |
| functionsIndex = 4; |
| } |
| } else { |
| constructor = descriptor[2]; |
| functionsIndex = 3; |
| } |
| |
| for (var i = functionsIndex; i < descriptor.length; i += 2) { |
| parseFunctionDescriptor(prototype, descriptor[i], descriptor[i + 1], |
| typesOffset); |
| } |
| |
| constructor.$typeNameProperty = name; // Needed for RTI. |
| constructor.prototype = prototype; |
| prototype[#operatorIsPrefix + name] = constructor; |
| prototype.constructor = constructor; |
| return constructor; |
| } |
| |
| function fillPrototypeWithMixedIn(mixinName, mixinHolderIndex, prototype) { |
| var mixin = holders[mixinHolderIndex][mixinName].ensureResolved(); |
| var mixinPrototype = mixin.prototype; |
| |
| // Fill the prototype with the mixin's properties. |
| var mixinProperties = Object.keys(mixinPrototype); |
| for (var i = 0; i < mixinProperties.length; i++) { |
| var p = mixinProperties[i]; |
| prototype[p] = mixinPrototype[p]; |
| } |
| } |
| |
| function determinePrototype(descriptor) { |
| var superclassName = descriptor[0]; |
| if (!superclassName) return { }; |
| |
| // Look up the superclass constructor function in the right holder. |
| var holderIndex = descriptor[1]; |
| var superclass = holders[holderIndex][superclassName].ensureResolved(); |
| |
| // Create a new prototype object chained to the superclass prototype. |
| var intermediate = function() { }; |
| intermediate.prototype = superclass.prototype; |
| return new intermediate(); |
| } |
| |
| function compile(__name__, __s__) { |
| 'use strict'; |
| // TODO(floitsch): evaluate the performance impact of the string |
| // concatenations. |
| return eval(__s__ + "\\n//# sourceURL=" + __name__ + ".js"); |
| } |
| |
| if (#outputContainsConstantList) { |
| function makeConstList(list) { |
| // By assigning a function to the properties they become part of the |
| // hidden class. The actual values of the fields don't matter, since we |
| // only check if they exist. |
| list.immutable\$list = Array; |
| list.fixed\$length = Array; |
| return list; |
| } |
| } |
| |
| if (#needsNativeSupport) { |
| function handleNativeClassInfos() { |
| for (var nativeClass in nativeInfos) { |
| var constructor = holdersMap[nativeClass][nativeClass].ensureResolved(); |
| var nativeInfo = nativeInfos[nativeClass]; |
| #nativeInfoHandler; |
| } |
| } |
| } |
| |
| $setupProgramName(program, 0); |
| |
| // Initialize globals. |
| #embeddedGlobals; |
| |
| function expressionCompile(__s__) { |
| 'use strict'; |
| return eval('(' + __s__ + ')'); |
| } |
| |
| #readMetadataTypeFunction; |
| |
| // TODO(floitsch): this order means that native classes may not be |
| // referenced from constants. I'm mostly afraid of things like using them as |
| // generic arguments (which should be fine, but maybe there are other |
| // similar things). |
| // Initialize natives. |
| if (#needsNativeSupport) handleNativeClassInfos(); |
| |
| // Initialize static non-final fields. |
| #staticNonFinals; |
| |
| // Add native boilerplate code. |
| #nativeIsolateAffinityTagInitialization; |
| |
| // Initialize eager classes. |
| #eagerClasses; |
| |
| var end = Date.now(); |
| // print('Setup: ' + (end - start) + ' ms.'); |
| |
| #invokeMain; // Start main. |
| |
| })(Date.now(), #code) |
| }"""; |
| } |
