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- move plugins into cbt namespace
- enable scalac warnings in builds by default
- merged language flags into AdvancedScala trait
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changes builds from using immutable.Seq to using Predef.Seq in favor of simplicity over purity. This has been discussed on gitter.
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with any other plugin
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this later)
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One large commit, because it is was hard to do these things in isolation or to separate them now.
CBT now knows how to load other versions of itself
- Support for reproducible builds (!), by providing a CBT git URL and hash to tie build to
- Support for composing builds using different CBT versions (!)
- introduce (in compatibility/) Java interfaces all CBT versions need to stay compatible with, so they can talk to each other. And put extension methods to these interfaces in cbt package object
Class loading
- add some sanity checks for class loading
- improve class loader invalidation to fix bugs
- implement caching in Java land class loaders. In particular to prevent the system class loader to repeatedly generate ClassNotFound exceptions in each sink of the class loader DAG for non JDK classes (meaning major speed up for projects with many classes).
- getting rid of transient class loader cache unifying into "persistent" one instead (which is still wrong as invalidation eventually needs to invalidate entire sub graphs of the class loading DAG, not single class loaders. Seems like we'll have to abandon the hashmap based approach and tie caching to dependency objects)
Other Caching
- cache dependencies extracted from xml files, which was one major time killer, but invalidate cache when cbt changed (maven dependency user facing api needs simplification now!)
- memorize last successful compile time in the file system rather than memory, to guard against unnecessary recompiling even across launches (or when using cbt direct)
Structural improvements
- Factor out ClassLoaderCache on Java land into its own class.
- Port MultiClassLoader to Java land, to better compose classloaders in NailgunLauncher.
- Remove many global constants and variables (in object paths and in NailgunLauncher) and pass them through instead. Needed for composing of builds.
- move more code from resolver into Lib for less entanglement with classes (needed to compatibility interfaces) and better re-usability
- remove canBeCached. Everything can be cached now, but we need to be careful about correct invalidation.
- remove build announcing produced jars. We can add if ever needed.
- change callNullary to return exit code instead of Unit as preparation for next commit introducing "recursive"
ScalaTest
- Makes ScalaTest support work (still a bit too inflexible, but mostly works well)
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Adds support for cross building for multiple scala versions
And for automatically appending -SNAPSHOT to the id, when publishing a snapshot.
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This commit also
- requires Dependencies to explicitly implement canBeCached
- unifies some logic for dependency downloading
- moves SBT-like dependency DSL into its own trait
- error message showing build directory for exceptions in builds
Not splitting this up in favor of faster progress to 1.0.
The user facing API can probably be slightly improved using implicits
inside of BasicBuild, but we can do that later.
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replace two level classloader (one for non-cachable dependencies with a cached parent one for cachable ones) with a hierachy of classloaders corresponding
this should eventually allow re-using CBT's classloader between stage1 and stage2
this change breaks the ScalaTest support for now
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caching classloaders hierarchically without deadlocks
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++ for strings everywhere. Added ++ method to File and URL and use it in many places
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lib. qualification from Stage1 for better readability
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