[web] Share more runtime code between ddc and dart2js

Creates a new 'dart:_js_shared_embedded_names' library for the names accessed from the shared 'dart:_rti' library. Migrate all of the shared symbols and uses to the new location. Change-Id: Iaa72c4522888ad630782b921b0b70d7a2626d1b9 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/241507 Reviewed-by: Sigmund Cherem <sigmund@google.com> Reviewed-by: Mayank Patke <fishythefish@google.com> Commit-Queue: Nicholas Shahan <nshahan@google.com>
2022-05-23 18:04:10 +00:00
parent d18798a6de
commit 444982f364
19 changed files with 277 additions and 266 deletions
@@ -0,0 +1,116 @@
+// Copyright (c) 2022, 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.
+
+// @dart=2.12
+
+/// A 'Universe' object used by 'dart:_rti'.
+const RTI_UNIVERSE = 'typeUniverse';
+
+/// An embedded global that contains the property used to store type information
+/// on JavaScript Array instances. This is a Symbol (except for IE11, where is
+/// is a String).
+const ARRAY_RTI_PROPERTY = 'arrayRti';
+
+/// A list of types used in the program e.g. for reflection or encoding of
+/// function types.
+///
+/// Use [JsBuiltin.getType] instead of directly accessing this embedded global.
+const TYPES = 'types';
+
+/// Names that are supported by [JS_GET_NAME].
+// TODO(herhut): Make entries lower case (as in fields) and find a better name.
+enum JsGetName {
+  GETTER_PREFIX,
+  SETTER_PREFIX,
+  CALL_PREFIX,
+  CALL_PREFIX0,
+  CALL_PREFIX1,
+  CALL_PREFIX2,
+  CALL_PREFIX3,
+  CALL_PREFIX4,
+  CALL_PREFIX5,
+  CALL_CATCH_ALL,
+  REQUIRED_PARAMETER_PROPERTY,
+  DEFAULT_VALUES_PROPERTY,
+  CALL_NAME_PROPERTY,
+  DEFERRED_ACTION_PROPERTY,
+
+  /// Prefix used for generated type test property on classes.
+  OPERATOR_IS_PREFIX,
+
+  /// Name used for generated function types on classes and methods.
+  SIGNATURE_NAME,
+
+  /// Name of JavaScript property used to store runtime-type information on
+  /// instances of parameterized classes.
+  RTI_NAME,
+
+  /// String representation of the type of the Future class.
+  FUTURE_CLASS_TYPE_NAME,
+
+  /// Field name used for determining if an object or its interceptor has
+  /// JavaScript indexing behavior.
+  IS_INDEXABLE_FIELD_NAME,
+
+  /// String representation of the type of the null class.
+  NULL_CLASS_TYPE_NAME,
+
+  /// String representation of the type of the object class.
+  OBJECT_CLASS_TYPE_NAME,
+
+  /// String representation of the type of the List class.
+  LIST_CLASS_TYPE_NAME,
+
+  /// Property name for Rti._as field.
+  RTI_FIELD_AS,
+
+  /// Property name for Rti._is field.
+  RTI_FIELD_IS,
+}
+
+enum JsBuiltin {
+  /// Returns the JavaScript constructor function for Dart's Object class.
+  /// This can be used for type tests, as in
+  ///
+  ///     var constructor = JS_BUILTIN('', JsBuiltin.dartObjectConstructor);
+  ///     if (JS('bool', '# instanceof #', obj, constructor))
+  ///       ...
+  dartObjectConstructor,
+
+  /// Returns the JavaScript constructor function for the runtime's Closure
+  /// class, the base class of all closure objects.  This can be used for type
+  /// tests, as in
+  ///
+  ///     var constructor = JS_BUILTIN('', JsBuiltin.dartClosureConstructor);
+  ///     if (JS('bool', '# instanceof #', obj, constructor))
+  ///       ...
+  dartClosureConstructor,
+
+  /// Returns true if the given type is a type argument of a js-interop class
+  /// or a supertype of a js-interop class.
+  ///
+  ///     JS_BUILTIN('bool', JsBuiltin.isJsInteropTypeArgument, o)
+  isJsInteropTypeArgument,
+
+  /// Returns the metadata of the given [index].
+  ///
+  ///     JS_BUILTIN('returns:var;effects:none;depends:none',
+  ///                JsBuiltin.getMetadata, index);
+  getMetadata,
+
+  /// Returns the type of the given [index].
+  ///
+  ///     JS_BUILTIN('returns:var;effects:none;depends:none',
+  ///                JsBuiltin.getType, index);
+  getType,
+}
+
+/// Names of fields of the Rti Universe object.
+class RtiUniverseFieldNames {
+  static String evalCache = 'eC';
+  static String typeRules = 'tR';
+  static String erasedTypes = 'eT';
+  static String typeParameterVariances = 'tPV';
+  static String sharedEmptyArray = 'sEA';
+}