Both for callables obtained via reflection API (KClass.members etc) and
for callables obtained via ::-references, the instance parameter is now
the class which was used to construct the type at the left-hand side of
the reference, NOT the class where the callable is originally declared
as is known at compile-time. The reason is to reduce the difference in
behavior of KCallable.call vs FunctionN.invoke: the latter always
required the subclass instance for a fake override, and it's reasonable
that the former would require it as well.
Note that in Java reflection, behavior could differ in a similar case.
For a simple fake override, Class.getMethod would return the method
declared in the base class and that method will accept instances of the
base class in invoke. However, it's difficult to rely on this behavior
because if there's a bridge for a fake override in the derived class
(e.g. when overridden members have different signatures), the returned
Method object is accepting the derived class as the receiver. This just
confirms the fact that Java reflection operates on a different level of
abstraction, namely JVM methods in .class files, which is not applicable
to our use cases directly. Another reason not to replicate Java
reflection's behavior is the uncertainty as to which member is returned
in case there are several in the hierarchy for a given fake override:
see the "otherwise one of the methods is chosen arbitrarily" note in
javadoc on Class.getMethod.
#KT-24170 Fixed
Also fix a bug where nullability of the assigned value was not checked
in ClassCompanionFieldSetter because it wasn't a subclass of FieldSetter
where this check occurred
Preface: Kotlin 1.3 will be able to read metadata of .class files
produced by Kotlin 1.4 (see KT-25972). Also, to simplify implementation
and to improve diagnostic messages, we're going to advance JVM metadata
version to 1.4.0 in Kotlin 1.4, and would like to keep it in sync with
the compiler version thereafter. This presents a problem: in an unlikely
event that before releasing 1.4, we find out that the metadata-reading
implementation in 1.3 was incorrect, we'd like to be able to fix the bug
in that implementation and _forbid_ 1.3 from reading metadata of 1.4.
But prior to this commit the only way to do this was to advance the
metadata version, in this case to 1.5, and that breaks the
metadata/compiler version equivalence we'd like to keep.
The solution is to add another boolean flag to the class file, called
"strict metadata version semantics", which signifies that if this class
file has metadata version 1.X, then it can only be read by the compilers
of versions 1.X and greater. This flag effectively disables the smooth
migration scenario proposed in KT-25972 (as does increasing metadata
version by 2), and will be used only in hopeless situations as in the
case described above.
Make it possible to specify annotations of the setter parameter when
constructing the default setter via DescriptorFactory; pass the split
annotations in DescriptorResolver.resolvePropertySetterDescriptor
#KT-25500 Fixed
This will make it possible to avoid raw types when inheriting from both
FunctionBase and Function<R>. This change adds a generic type parameter
to FunctionBase and Lambda which is not source-breaking under our policy
because both FunctionBase and Lambda are internal classes (located in
package kotlin.jvm.internal)
Caused by 4266e50be8 and 8ccbbf71ec. Previously it worked because we
used hardcoded signatures of equals/hashCode/toString and always looked
them up in java.lang.Object
#KT-25404 Fixed
* SuccessOrFailure inline class is introduced
* Continuation.resumeWith(SuccessOrFailure)
* createCoroutineUnintercepted
* [Restricted]ContinuationImpl as named suspending function base
* [Restricted]SuspendLambda as suspending lambda base
* SuspendFunction[01] interfaces for efficient createCoroutine
* Serializable coroutine classes
This is now fully covered by the JVM signature mapping, introduced in
the previous commit. The change in KDeclarationContainerImpl.methodOwner
is needed because primitive classes have no methods on JVM; and when
we're looking for "Int.equals", we'll now look it up in the Class object
for java.lang.Integer, not for the primitive int.
There are cases when members deserialized from JVM classes have no JVM
signature in the proto. For example, if a member is inherited from a
built-in class (such as Map.getOrDefault in some Map implementations),
or if a member is synthesized in the compiler front-end and back-end
separately (such as enum values/valueOf). In these cases, we'll use the
naive type mapping to try to recover the signature.
#KT-16616 Fixed
#KT-17542 Fixed
Instead of IndexOutOfBoundsException from the protobuf internals which
was thrown when loading extension with a non-existing index out of the
list of all extensions (KT-23413)
Introduce a method to create org.jetbrains.kotlin.load.kotlin.MemberSignature directly from JvmMemberSignature.
Create JvmFunctionSignature from JvmMemberSignature.
'hasDefaultValue' needs to be adapted to support locating default values
in 'expect' functions, and this is not possible in module 'descriptors',
where it was originally declared. Therefore, move it to module
'resolution' and copy its current logic to a separate function
'declaresOrInheritsDefaultValue' which is used in 5 places.
'hasDefaultValue' itself is updated in subsequent commits.
Besides changing imports, also use a simpler declaresDefaultValue in
some places, which does not include default values inherited from
supertypes: this is OK for constructors, and in LazyJavaClassMemberScope
for functions from built-ins which do not have default argument values
at all
To make it obvious that this is a part of kotlin-reflect and should not
be packed into the compiler jar. Also copy 'classId' utility to
AbstractLocalClassProtoTest to minimize dependencies on
kotlin.reflect.jvm.internal
Note that the module itself is still needed and can't be merged into
kotlin-reflect because of the way it's used in
AbstractJvmRuntimeDescriptorLoaderTest
This is needed to avoid the split package problem on Java 9 (KT-19258):
both kotlin-stdlib.jar and kotlin-reflect.jar export the package
kotlin.reflect
Alexander Udalov