Changes in Gradle integration tests are needed because:
- in new-mpp-android, kotlin-stdlib-jdk8 is used, and JVM IR generates
JDK 8-specific bytecode (invokedynamic). D8 needs to be configured to
desugar it with source/target versions set to 1.8, otherwise it
reports an error.
- in AndroidExtensionsManyVariants and AndroidIcepickProject, D8 fails
with assertions enabled if AGP < 4.0.0 is used because of
https://issuetracker.google.com/issues/148661132. The tests which use
old AGP versions are probably not relevant anymore anyway.
Changes in kotlin-stdlib-runtime-merged.txt are caused by a slightly
different generation scheme of collection subclasses in JVM IR, and are
harmless.
(Previous attempt was at 15e978dbd311c2ba78ec32b394c21acde9811ccb.)
There are several changes here but they all required for at least one test to pass.
- Implemented String class and several utility functions using built-in CharArray
- Added new constant memory segment to hold string literals and required funcs to work with them
- Added very crude mostly incorrect rudimentary ability to pass strings back to javascript
There seems to be no point in configuring the compiler argument per
project. This argument will be deleted soon anyway, when we remove
support for JDK 1.6 & 1.7.
Also remove `disableDeprecatedJvmTargetWarning`. It didn't have any
effect in all modules where it was applied because these modules
reassign `freeCompilerArgs` anyway, with
`-Xsuppress-deprecated-jvm-target-warning` in it.
These compiler arguments enable features which are enabled by default in
the current Kotlin anyway.
The only exception is in :compiler:cli which uses an old language
version.
In the stdlib implementation, render "!" if the type is only
nullability-flexible. Otherwise, render "($lower..$upper)".
Note that full kotlin-reflect has a much more complicated logic (see
`DescriptorRendererImpl.renderFlexibleType`) that renders things like
`(Mutable)List` and so on. It is not a goal of the stdlib implementation
to replicate all of that, since it requires copying a large amount of
code, namely the entirety of `JavaToKotlinClassMap` to map Java class
names to Kotlin.
The proper support will come in KT-15518, but that would be a breaking
change even for stable Kotlin without kotlin-reflect. Before that issue
is fixed, represent Nothing in types with the Void class, and use a flag
in the no-reflect implementation to remember that it's not actually the
Void class itself.
#KT-39166 Fixed
Alexander Udalov