CacheVersion class refactoring:
Responsibilities of class CacheVersion are splitted into:
- interface CacheAttributesManager<Attrs>, that should:
- load actual cache attribute values from FS
- provide expected attribute values (that is required for current build)
- checks when the existed cache (with actual attributes) values is suitable for current build (expected atribute values)
- write new values to FS for next build
- CacheAttributesDiff is created by calling CacheAttributesManager.loadDiff extension method. This is just pair of actual and expected cache attributes values, with reference to manager. Result of loadDiff can be saved.
CacheAttributesDiff are designed to be used as facade of attributes operations: CacheAttributesDiff.status are calculated based on actual and expected attribute values. Based on that status system may perform required actions (i.e. rebuild something, clearing caches, etc...).
Methods of CacheAttributesManager other then loadDiff should be used only through CacheAttributesDiff.
Build system should work in this order:
- get implementation of CacheAttributesManager for particular compiler and cache
- call loadDiff __once__ and save it result
- perform actions based on `diff.status`
- save new cache attribute values by calling `diff.saveExpectedIfNeeded()`
There are 2 implementation of CacheAttributesManager:
- CacheVersionManager that simple checks cache version number.
- CompositeLookupsCacheAttributesManager - manager for global lookups cache that may contain lookups for several compilers (jvm, js).
Gradle:
Usages of CacheVersion in gradle are kept as is. For compatibility this methods are added: CacheAttributesManager.saveIfNeeded, CacheAttributesManager.clean. This methods should not be used in new code.
JPS:
All JPS logic that was responsible for cache version checking completely rewritten.
To write proper implementation for version checking, this things also changed:
- KotlinCompileContext introduced. This context lives between first calling build of kotlin target until build finish. As of now all kotlin targets are loaded on KotlinCompileContext initialization. This is required to collect kotlin target types used in this build (jvm/js). Also all build-wide logic are moved from KotlinBuilder to KotlinCompileContext. Chunk dependency calculation also moved to build start which improves performance for big projects #KT-26113
- Kotlin bindings to JPS build targets also stored in KotlinCompileContext, and binding is fixed. Previously it is stored in local Context and reacreated for each chunk, now they stored in KotlinCompileContext which is binded by GlobalContextKey with this exception: source roots are calculated for each round, since temporary source roots with groovy stubs are created at build time and visible only in local compile context.
- KotlinChunk introduced. All chunk-wide logic are moved from KotlinModuleBuildTarget (i.e compiler, language, cache version checking and dependent cache loading)
- Fix legacy MPP common dependent modules
Cache version checking logic now works as following:
- At first chunk building all targets are loaded and used platforms are collected. Lookups cache manger is created based on this set. Actual cache attributes are loaded from FS. Based on CacheAttributesDiff.status this actions are performed: if cache is invalid all kotlin will be rebuilt. If cache is not required anymore it will be cleaned.
- Before build of each chunk local chunk cache attributes will be checked. If cache is invalid, chunk will be rebuilt. If cache is not required anymore it will be cleaned.
#KT-26113 Fixed
#KT-26072 Fixed
These three methods are conflicting with existing extensions,
thus the behavior might be changed when switching to JDK 11
Probably, it's worth revisiting our strategy here,
e.g. by blacklisting all new methods in
#KT-24974 Fixed
Suspend functions and callable references to suspend lambdas are already
supported.
Support callSuspendBy of suspend function of big arity.
#KT-24854: Fixed
- Why we bother? Because this test tries to read @Metadata via
reflection, and in 1.3 @Metadata has @Since("1.3") annotation. Thus,
with version fixed to 1.2, this test fails with UNRESOLVED_REFERENCE
- Why it is correct? Because initially this directive was used to enable
'LanguageFeature.JvmPackageName' (we didn't have infrastructure for
enabling particulare feature at that moment). So, now we could change it
to the '!LANGUAGE:+JvmPackageName', but it is actually redundant,
because master is already >= 1.2
Rationaly is that facet importer knows better about which language
versions should be used, so we shouldn't interfere.
Otherwise, Gradle or Maven projects which have upgraded corresponding
plugin to 1.3 will be imported with 1.2 levels, which is undesirable
* First, it overrides `addCommonSourceSetToPlatformSourceSet` with an
old signature that was drop during migration to 'KotlinSourceSet's
* Second, it uses an extension SourceSet.kotlin that got dropped during
the aforementioned migration
Now, for the old MPP K/N plugin, `addCommonSourceSetToPlatformSourceSet`
is called twice, one time with the new signature and another with the
old one, which it overrides.
Version for IDEA 182 does not work properly here (returns null),
so we have to use `DataManager.getDataContext(focusedComponent)` directly
#KT-26399 Fixed
The extraction itself is needed due to different behaviour of related
IDEA functions in different platforms.
Check on null is needed because `createFromAnAction` last argument
cannot be null, otherwise we will get an exception.
Partial fix of KT-26399
When 'languageVersion' isn't passed explicitly, compiler will choose
'LATEST_STABLE'.
This may lead to spurious migration of a project to the next major
version after plugin update (e.g. when user had project of major
version X and then installed plugin of version X+1 -- in such case,
meaning of "no language version" suddenly changes).
So, we set it to RELEASED_VERSION, which is exactly the version
that is safe to use as the fallback.
There are few more such places. Better fix would be to avoid
situation, when we need to fallback. So in every project these
settings are defined. It means "Latest stable" setting is not good.
#KT-26364 Fixed
Make it the same type as in case of an empty collection, so that
`emptyRange.random()` throws the same exception as `emptyRange.toList().random()`.
#KT-15539
Sergey Rostov