IC caches often contain file paths. To make them relocatable, we need
to convert these file paths into relative paths, relative to a base
directory.
- If the file paths are source files, we can use the root project
directory as base.
- If the file paths are class files, we should use the classes
directory as base (before this commit, we used the root project
directory in both cases, that's why we hit KT-58547).
The key changes in this commit include:
- RelocatableFileToPathConverter: converts paths to relative paths
- IncrementalCompilationContext: contains 2 different path converters,
one for source files and one for class files
- SourceToOutputFilesMap: maps source files to class files using the
above path converters
- IncrementalCompilerRunner: creates the path converters based on file
locations
Test: RelocatableFileToPathConverterTest unit test
SourceToOutputFilesMapTest unit test
BuildCacheRelocationIT.testCustomBuildDirectory integration test
^KT-58547 Fixed
Previously, when snapshotting the classpath with
`ClasspathEntrySnapshotTransform`, for each jar we load all classes
in memory at once. This was needed to detect inaccessible classes
(classes that don't impact incremental compilation and therefore
don't need to be snapshotted).
To reduce memory consumption, this commit updates the algorithm such
that we can now load one class at a time while still being able to
detect inaccessible classes.
In addition, we now read jar files with `java.util.zip.ZipFile` API
instead of `java.util.zip.ZipInputStream` to avoid current JDK bugs with
`ZipInputStream` (e.g., https://bugs.openjdk.org/browse/JDK-8298530).
^KT-57757 Fixed
^KT-57767 Fixed
Alexander.Likhachev