Pass computed list of changed classpath names to KAPT instead
of relying on the history files to be computed by stub generation.
Also, stop generating classpath history changes during the stub generation.
This commit does not compute the actual changed classpath entries,
and that will be done in the following commits.
#KT-23880
`-Xbuild-file` argument allows the compiler to run without
passing any Kotlin source file in arguments.
We have been using this property in
Kotlin Gradle plugin for a few important cases:
1. incremental compilation (to update caches when there are only removed files);
2. for KAPT (Kotlin sources don't make sense in context
of running APs).
We want to stop using `-Xbuild-file` in Kotlin Gradle plugin,
and avoid breaking the Gradle plugin or IC in other build-systems.
This change adds an argument to explicitly run
the compiler without specifying any Kotlin source file.
Add support for incremental annotation processors in KAPT. These
processors conform to https://docs.gradle.org/current/userguide/java_plugin.html#sec:incremental_annotation_processing
specification.
Support is provided by using javac compiler APIs and
recording the source file structure. At runtime, processors
are instrumented with custom Filer that is used to keep track of generated
files. In order to support classpath changes, stub generation task is
used to generated a list of changed FQCNs, and this is simply used by KAPT.
Both worker and non-worker mode are supported.
#KT-23880
#KT-27868 Fixed
Previously given dirtyFiles was removed from complementaryFilesMap
exactly on call of clearComplementaryFilesMapping. This causes fail
of next build in case of compilation error of previous build on JPS
(since complementary files not known on second build). The right way
to do it is removing (replacing) them only after successful
build.
This was working on Gradle since Gradle rebuilds whole module (project)
in case of build error.
Problem: previously, format-version.txt file was deleted while cleaning
target output on rebuild. Since directory was deleted, cache
attributesDiff stored in memory was not updated. This causes that on
saveExpectedStateIfNeeded does nothing.
The right way to fix it is move cache version format diff into
AbstractIncrementalCache, and override `clean()` method. But this is
hard to do for lookup storage, since used compilers set (jvm/js) will
known only after context init. This can be done by moving `expected`
attributes out of manager, but this is huge change for small benefit.
So, the optimal way for now is to write version for each build, even if
it is not changed.
#KT-27044 Fixed
Roman Artemev