mirror of
https://github.com/dart-lang/sdk
synced 2024-09-05 08:24:39 +00:00
[dart2js] improve nullsafe API for a few _find* methods
A few private methods in common/elements.dart are used to lookup classes and members. This is a step in normalizing these methods, so that we use different APIs when the values are required and when they are not. Ideally this is a change we'd do more generally in our APIs (e.g. the env APIs should be split). Change-Id: Iacc2f012f6f60ae960c61d8897630f6a7f1d60e6 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/260080 Commit-Queue: Sigmund Cherem <sigmund@google.com> Reviewed-by: Mayank Patke <fishythefish@google.com>
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@ -30,63 +30,63 @@ abstract class CommonElements {
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CommonElements(this.dartTypes, this._env);
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/// The `Object` class defined in 'dart:core'.
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late final ClassEntity objectClass = _findClass(coreLibrary, 'Object')!;
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late final ClassEntity objectClass = _findClass(coreLibrary, 'Object');
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/// The `bool` class defined in 'dart:core'.
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late final ClassEntity boolClass = _findClass(coreLibrary, 'bool')!;
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late final ClassEntity boolClass = _findClass(coreLibrary, 'bool');
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/// The `num` class defined in 'dart:core'.
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late final ClassEntity numClass = _findClass(coreLibrary, 'num')!;
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late final ClassEntity numClass = _findClass(coreLibrary, 'num');
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/// The `int` class defined in 'dart:core'.
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late final ClassEntity intClass = _findClass(coreLibrary, 'int')!;
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late final ClassEntity intClass = _findClass(coreLibrary, 'int');
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/// The `double` class defined in 'dart:core'.
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late final ClassEntity doubleClass = _findClass(coreLibrary, 'double')!;
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late final ClassEntity doubleClass = _findClass(coreLibrary, 'double');
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/// The `String` class defined in 'dart:core'.
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late final ClassEntity stringClass = _findClass(coreLibrary, 'String')!;
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late final ClassEntity stringClass = _findClass(coreLibrary, 'String');
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/// The `Function` class defined in 'dart:core'.
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late final ClassEntity functionClass = _findClass(coreLibrary, 'Function')!;
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late final ClassEntity functionClass = _findClass(coreLibrary, 'Function');
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/// The `Resource` class defined in 'dart:core'.
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late final ClassEntity resourceClass = _findClass(coreLibrary, 'Resource')!;
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late final ClassEntity resourceClass = _findClass(coreLibrary, 'Resource');
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/// The `Symbol` class defined in 'dart:core'.
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late final ClassEntity symbolClass = _findClass(coreLibrary, 'Symbol')!;
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late final ClassEntity symbolClass = _findClass(coreLibrary, 'Symbol');
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/// The `Null` class defined in 'dart:core'.
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late final ClassEntity nullClass = _findClass(coreLibrary, 'Null')!;
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late final ClassEntity nullClass = _findClass(coreLibrary, 'Null');
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/// The `Type` class defined in 'dart:core'.
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late final ClassEntity typeClass = _findClass(coreLibrary, 'Type')!;
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late final ClassEntity typeClass = _findClass(coreLibrary, 'Type');
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/// The `StackTrace` class defined in 'dart:core';
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late final ClassEntity stackTraceClass =
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_findClass(coreLibrary, 'StackTrace')!;
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_findClass(coreLibrary, 'StackTrace');
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/// The `List` class defined in 'dart:core';
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late final ClassEntity listClass = _findClass(coreLibrary, 'List')!;
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late final ClassEntity listClass = _findClass(coreLibrary, 'List');
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/// The `Set` class defined in 'dart:core';
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late final ClassEntity setClass = _findClass(coreLibrary, 'Set')!;
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late final ClassEntity setClass = _findClass(coreLibrary, 'Set');
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/// The `Map` class defined in 'dart:core';
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late final ClassEntity mapClass = _findClass(coreLibrary, 'Map')!;
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late final ClassEntity mapClass = _findClass(coreLibrary, 'Map');
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/// The `Set` class defined in 'dart:core';
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late final ClassEntity unmodifiableSetClass =
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_findClass(_env.lookupLibrary(Uris.dart_collection), '_UnmodifiableSet')!;
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_findClass(collectionLibrary, '_UnmodifiableSet');
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/// The `Iterable` class defined in 'dart:core';
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late final ClassEntity iterableClass = _findClass(coreLibrary, 'Iterable')!;
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late final ClassEntity iterableClass = _findClass(coreLibrary, 'Iterable');
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/// The `Future` class defined in 'async';.
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late final ClassEntity futureClass = _findClass(asyncLibrary, 'Future')!;
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late final ClassEntity futureClass = _findClass(asyncLibrary, 'Future');
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/// The `Stream` class defined in 'async';
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late final ClassEntity streamClass = _findClass(asyncLibrary, 'Stream')!;
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late final ClassEntity streamClass = _findClass(asyncLibrary, 'Stream');
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/// The dart:core library.
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late final LibraryEntity coreLibrary =
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@ -95,14 +95,22 @@ abstract class CommonElements {
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/// The dart:async library.
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late final LibraryEntity? asyncLibrary = _env.lookupLibrary(Uris.dart_async);
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/// The dart:collection library.
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late final LibraryEntity? collectionLibrary =
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_env.lookupLibrary(Uris.dart_collection);
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/// The dart:mirrors library.
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/// Null if the program doesn't access dart:mirrors.
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late final LibraryEntity? mirrorsLibrary =
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_env.lookupLibrary(Uris.dart_mirrors);
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/// The dart:typed_data library.
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late final LibraryEntity? typedDataLibrary =
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_env.lookupLibrary(Uris.dart__native_typed_data);
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late final LibraryEntity typedDataLibrary =
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_env.lookupLibrary(Uris.dart__native_typed_data, required: true)!;
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/// The dart:_js_shared_embedded_names library.
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late final LibraryEntity sharedEmbeddedNamesLibrary =
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_env.lookupLibrary(Uris.dart__js_shared_embedded_names, required: true)!;
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/// The dart:_js_helper library.
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late final LibraryEntity? jsHelperLibrary =
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@ -141,7 +149,7 @@ abstract class CommonElements {
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/// The `NativeTypedData` class from dart:typed_data.
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ClassEntity get typedDataClass =>
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_findClass(typedDataLibrary, 'NativeTypedData')!;
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_findClass(typedDataLibrary, 'NativeTypedData');
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/// Constructor of the `Symbol` class in dart:internal.
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///
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@ -152,7 +160,7 @@ abstract class CommonElements {
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// so this cannot be found in kernel. Find a consistent way to handle
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// this and similar cases.
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return _symbolConstructorTarget ??=
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_findConstructor(symbolImplementationClass, '')!;
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_env.lookupConstructor(symbolImplementationClass, '')!;
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}
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void _ensureSymbolConstructorDependencies() {
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@ -161,21 +169,22 @@ abstract class CommonElements {
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if (_symbolConstructorTarget == null) {
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if (_symbolImplementationClass == null) {
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_symbolImplementationClass =
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_findClass(internalLibrary, 'Symbol', required: false);
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_findClassOrNull(internalLibrary, 'Symbol');
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}
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if (_symbolImplementationClass != null) {
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_symbolConstructorTarget =
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_findConstructor(_symbolImplementationClass!, '', required: false);
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_symbolConstructorTarget = _env.lookupConstructor(
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_symbolImplementationClass!, '',
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required: false);
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}
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}
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if (_symbolClass == null) {
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_symbolClass = _findClass(coreLibrary, 'Symbol', required: false);
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_symbolClass = _findClassOrNull(coreLibrary, 'Symbol');
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}
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if (_symbolClass == null) {
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return;
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}
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_symbolConstructorImplementationTarget =
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_findConstructor(symbolClass, '', required: false);
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_env.lookupConstructor(symbolClass, '', required: false);
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}
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/// Whether [element] is the same as [symbolConstructor].
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@ -310,10 +319,13 @@ abstract class CommonElements {
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return _createInterfaceType(streamClass, [elementType]);
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}
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ClassEntity? _findClass(LibraryEntity? library, String name,
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{bool required = true}) {
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ClassEntity _findClass(LibraryEntity? library, String name) {
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return _env.lookupClass(library!, name, required: true)!;
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}
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ClassEntity? _findClassOrNull(LibraryEntity? library, String name) {
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if (library == null) return null;
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return _env.lookupClass(library, name, required: required);
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return _env.lookupClass(library, name, required: false);
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}
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T? _findLibraryMember<T extends MemberEntity>(
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@ -324,16 +336,17 @@ abstract class CommonElements {
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setter: setter, required: required) as T?;
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}
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T? _findClassMember<T extends MemberEntity>(ClassEntity cls, String name,
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{bool setter = false, bool required = true}) {
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T? _findClassMemberOrNull<T extends MemberEntity>(
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ClassEntity cls, String name) {
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return _env.lookupLocalClassMember(
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cls, Name(name, cls.library.canonicalUri, isSetter: setter),
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required: required) as T?;
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cls, Name(name, cls.library.canonicalUri, isSetter: false),
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required: false) as T?;
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}
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ConstructorEntity? _findConstructor(ClassEntity cls, String name,
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{bool required = true}) {
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return _env.lookupConstructor(cls, name, required: required);
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T _findClassMember<T extends MemberEntity>(ClassEntity cls, String name) {
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return _env.lookupLocalClassMember(
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cls, Name(name, cls.library.canonicalUri, isSetter: false),
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required: true) as T;
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}
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/// Return the raw type of [cls].
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@ -387,8 +400,7 @@ abstract class CommonElements {
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if (_mapLiteralClass == null) {
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_mapLiteralClass = _env.lookupClass(coreLibrary, 'LinkedHashMap');
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if (_mapLiteralClass == null) {
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_mapLiteralClass = _findClass(
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_env.lookupLibrary(Uris.dart_collection), 'LinkedHashMap');
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_mapLiteralClass = _findClass(collectionLibrary, 'LinkedHashMap');
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}
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}
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return _mapLiteralClass!;
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@ -408,7 +420,7 @@ abstract class CommonElements {
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as FunctionEntity;
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late final ClassEntity setLiteralClass =
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_findClass(_env.lookupLibrary(Uris.dart_collection), 'LinkedHashSet')!;
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_findClass(collectionLibrary, 'LinkedHashSet');
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late final ConstructorEntity setLiteralConstructor =
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_env.lookupConstructor(setLiteralClass, '_literal')!;
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@ -436,7 +448,7 @@ abstract class CommonElements {
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// From dart:async
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ClassEntity _findAsyncHelperClass(String name) =>
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_findClass(asyncLibrary, name)!;
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_findClass(asyncLibrary, name);
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FunctionEntity _findAsyncHelperFunction(String name) =>
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_findLibraryMember(asyncLibrary, name)!;
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@ -502,7 +514,7 @@ abstract class CommonElements {
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// From dart:_interceptors
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ClassEntity _findInterceptorsClass(String name) =>
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_findClass(interceptorsLibrary, name)!;
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_findClass(interceptorsLibrary, name);
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FunctionEntity _findInterceptorsFunction(String name) =>
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_findLibraryMember(interceptorsLibrary, name)!;
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@ -580,7 +592,7 @@ abstract class CommonElements {
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_findInterceptorsFunction('getNativeInterceptor');
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late final ConstructorEntity jsArrayTypedConstructor =
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_findConstructor(jsArrayClass, 'typed')!;
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_env.lookupConstructor(jsArrayClass, 'typed')!;
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// From dart:_js_helper
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// TODO(johnniwinther): Avoid the need for this (from [CheckedModeHelper]).
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@ -590,7 +602,7 @@ abstract class CommonElements {
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_findLibraryMember(jsHelperLibrary, name)!;
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ClassEntity _findHelperClass(String name) =>
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_findClass(jsHelperLibrary, name)!;
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_findClass(jsHelperLibrary, name);
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FunctionEntity _findLateHelperFunction(String name) =>
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_findLibraryMember(lateHelperLibrary, name)!;
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@ -619,7 +631,7 @@ abstract class CommonElements {
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InterfaceType get requiredSentinelType => _getRawType(requiredSentinelClass);
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late final MemberEntity invocationTypeArgumentGetter =
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_findClassMember(jsInvocationMirrorClass, 'typeArguments')!;
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_findClassMember(jsInvocationMirrorClass, 'typeArguments');
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/// Interface used to determine if an object has the JavaScript
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/// indexing behavior. The interface is only visible to specific libraries.
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@ -787,7 +799,7 @@ abstract class CommonElements {
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// From dart:_rti
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ClassEntity _findRtiClass(String name) => _findClass(rtiLibrary, name)!;
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ClassEntity _findRtiClass(String name) => _findClass(rtiLibrary, name);
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FunctionEntity _findRtiFunction(String name) =>
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_findLibraryMember(rtiLibrary, name)!;
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@ -808,12 +820,12 @@ abstract class CommonElements {
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late final FunctionEntity checkTypeBound = _findRtiFunction('checkTypeBound');
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ClassEntity get _rtiImplClass => _findClass(rtiLibrary, 'Rti')!;
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ClassEntity get _rtiImplClass => _findRtiClass('Rti');
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ClassEntity get _rtiUniverseClass => _findClass(rtiLibrary, '_Universe')!;
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ClassEntity get _rtiUniverseClass => _findRtiClass('_Universe');
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FieldEntity _findRtiClassField(String name) =>
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_findClassMember(_rtiImplClass, name)!;
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_findClassMember(_rtiImplClass, name);
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late final FieldEntity rtiAsField = _findRtiClassField('_as');
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@ -825,19 +837,19 @@ abstract class CommonElements {
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_findRtiClassField('_precomputed1');
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late final FunctionEntity rtiEvalMethod =
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_findClassMember(_rtiImplClass, '_eval')!;
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_findClassMember(_rtiImplClass, '_eval');
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late final FunctionEntity rtiBindMethod =
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_findClassMember(_rtiImplClass, '_bind')!;
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_findClassMember(_rtiImplClass, '_bind');
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late final FunctionEntity rtiAddRulesMethod =
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_findClassMember(_rtiUniverseClass, 'addRules')!;
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_findClassMember(_rtiUniverseClass, 'addRules');
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late final FunctionEntity rtiAddErasedTypesMethod =
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_findClassMember(_rtiUniverseClass, 'addErasedTypes')!;
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_findClassMember(_rtiUniverseClass, 'addErasedTypes');
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late final FunctionEntity rtiAddTypeParameterVariancesMethod =
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_findClassMember(_rtiUniverseClass, 'addTypeParameterVariances')!;
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_findClassMember(_rtiUniverseClass, 'addTypeParameterVariances');
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FunctionEntity get installSpecializedIsTest =>
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_findRtiFunction('_installSpecializedIsTest');
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@ -916,19 +928,18 @@ abstract class CommonElements {
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// From dart:_internal
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late final ClassEntity symbolImplementationClass =
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_findClass(internalLibrary, 'Symbol')!;
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_findClass(internalLibrary, 'Symbol');
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/// Used to annotate items that have the keyword "native".
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late final ClassEntity externalNameClass =
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_findClass(internalLibrary, 'ExternalName')!;
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_findClass(internalLibrary, 'ExternalName');
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InterfaceType get externalNameType => _getRawType(externalNameClass);
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// From dart:_js_embedded_names
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late final ClassEntity jsGetNameEnum = _findClass(
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_env.lookupLibrary(Uris.dart__js_shared_embedded_names, required: true),
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'JsGetName')!;
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late final ClassEntity jsGetNameEnum =
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_findClass(sharedEmbeddedNamesLibrary, 'JsGetName');
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/// Returns `true` if [member] is a "foreign helper", that is, a member whose
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/// semantics is defined synthetically and not through Dart code.
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@ -1027,18 +1038,18 @@ class KCommonElements extends CommonElements {
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// From package:js
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late final ClassEntity? jsAnnotationClass1 =
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_findClass(packageJsLibrary, 'JS', required: false);
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_findClassOrNull(packageJsLibrary, 'JS');
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late final ClassEntity? jsAnonymousClass1 =
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_findClass(packageJsLibrary, '_Anonymous', required: false);
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_findClassOrNull(packageJsLibrary, '_Anonymous');
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// From dart:_js_annotations
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late final ClassEntity? jsAnnotationClass2 =
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_findClass(dartJsAnnotationsLibrary, 'JS', required: false);
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_findClassOrNull(dartJsAnnotationsLibrary, 'JS');
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late final ClassEntity? jsAnonymousClass2 =
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_findClass(dartJsAnnotationsLibrary, '_Anonymous', required: false);
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_findClassOrNull(dartJsAnnotationsLibrary, '_Anonymous');
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/// Returns `true` if [cls] is a @JS() annotation.
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///
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return cls == jsAnonymousClass1 || cls == jsAnonymousClass2;
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}
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late final ClassEntity pragmaClass = _findClass(coreLibrary, 'pragma')!;
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late final ClassEntity pragmaClass = _findClass(coreLibrary, 'pragma');
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late final FieldEntity pragmaClassNameField =
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_findClassMember(pragmaClass, 'name')!;
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_findClassMember(pragmaClass, 'name');
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late final FieldEntity pragmaClassOptionsField =
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_findClassMember(pragmaClass, 'options')!;
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_findClassMember(pragmaClass, 'options');
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}
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class JCommonElements extends CommonElements {
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FunctionEntity? _jsStringSplit;
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JCommonElements(super.dartTypes, super.env);
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/// Returns `true` if [element] is the unnamed constructor of `List`.
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@ -1106,9 +1115,9 @@ class JCommonElements extends CommonElements {
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}
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late final FunctionEntity jsArrayRemoveLast =
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_findClassMember(jsArrayClass, 'removeLast')!;
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_findClassMember(jsArrayClass, 'removeLast');
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late final FunctionEntity jsArrayAdd = _findClassMember(jsArrayClass, 'add')!;
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late final FunctionEntity jsArrayAdd = _findClassMember(jsArrayClass, 'add');
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bool _isJsStringClass(ClassEntity cls) {
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return cls.name == 'JSString' && cls.library == interceptorsLibrary;
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@ -1123,33 +1132,29 @@ class JCommonElements extends CommonElements {
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/// Returns `true` if [selector] applies to `JSString.split` on [receiver]
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/// in the given [world].
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///
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/// Returns `false` if `JSString.split` is not available.
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/// Returns `false` if `JSString.split` is not available (e.g. the
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/// method was tree-shaken in an earlier compilation phase).
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bool appliesToJsStringSplit(Selector selector, AbstractValue? receiver,
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AbstractValueDomain abstractValueDomain) {
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if (_jsStringSplit == null) {
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ClassEntity? cls =
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_findClass(interceptorsLibrary, 'JSString', required: false);
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if (cls == null) return false;
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_jsStringSplit = _findClassMember(cls, 'split', required: false);
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if (_jsStringSplit == null) return false;
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}
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return selector.applies(_jsStringSplit!) &&
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final splitMember = jsStringSplit;
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if (splitMember == null) return false;
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return selector.applies(splitMember) &&
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(receiver == null ||
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abstractValueDomain
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.isTargetingMember(receiver, jsStringSplit, selector.memberName)
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.isTargetingMember(receiver, splitMember, selector.memberName)
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.isPotentiallyTrue);
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}
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FunctionEntity get jsStringSplit =>
|
||||
_jsStringSplit ??= _findClassMember(jsStringClass, 'split')!;
|
||||
late final FunctionEntity? jsStringSplit =
|
||||
_findClassMemberOrNull(jsStringClass, 'split');
|
||||
|
||||
late final FunctionEntity jsStringToString =
|
||||
_findClassMember(jsStringClass, 'toString')!;
|
||||
_findClassMember(jsStringClass, 'toString');
|
||||
|
||||
late final FunctionEntity jsStringOperatorAdd =
|
||||
_findClassMember(jsStringClass, '+')!;
|
||||
_findClassMember(jsStringClass, '+');
|
||||
|
||||
late final ClassEntity jsConstClass = _findClass(foreignLibrary, 'JS_CONST')!;
|
||||
late final ClassEntity jsConstClass = _findClass(foreignLibrary, 'JS_CONST');
|
||||
|
||||
/// Return `true` if [member] is the 'checkInt' function defined in
|
||||
/// dart:_js_helpers.
|
||||
|
@ -1186,17 +1191,14 @@ class JCommonElements extends CommonElements {
|
|||
|
||||
// From dart:_native_typed_data
|
||||
|
||||
late final ClassEntity? typedArrayOfIntClass = _findClass(
|
||||
_env.lookupLibrary(Uris.dart__native_typed_data, required: true),
|
||||
'NativeTypedArrayOfInt');
|
||||
late final ClassEntity? typedArrayOfIntClass =
|
||||
_findClass(typedDataLibrary, 'NativeTypedArrayOfInt');
|
||||
|
||||
late final ClassEntity typedArrayOfDoubleClass = _findClass(
|
||||
_env.lookupLibrary(Uris.dart__native_typed_data, required: true),
|
||||
'NativeTypedArrayOfDouble')!;
|
||||
late final ClassEntity typedArrayOfDoubleClass =
|
||||
_findClass(typedDataLibrary, 'NativeTypedArrayOfDouble');
|
||||
|
||||
late final ClassEntity jsBuiltinEnum = _findClass(
|
||||
_env.lookupLibrary(Uris.dart__js_shared_embedded_names, required: true),
|
||||
'JsBuiltin')!;
|
||||
late final ClassEntity jsBuiltinEnum =
|
||||
_findClass(sharedEmbeddedNamesLibrary, 'JsBuiltin');
|
||||
|
||||
bool isForeign(MemberEntity element) => element.library == foreignLibrary;
|
||||
|
||||
|
|
Loading…
Reference in a new issue