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Attacking exponential complexity in TypeMaps
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- Don't normalize existentials during the `contain`-s type map;
`ExistentialType#normalize' calls contains internally and
an exponential blowup ensues.
- Ensure that the type map used in variance validation never
returns modified types in order to avoid needless cloning of
symbols.
The enclosed test case still gets stuck in Uncurry, thanks to
the way that `TypeMap#mapOver(List[Symbol])` recurses through the
type first to check whether the type map would be an no-op or not.
If not, it repeats the type map with cloned symbols. Doing the work
twice at each level of recursion blows up the complexity.
Removing that "fast path" allows the enclosed test to compile
completely. As at this commit, it gets stuck in uncurry, which
dealiases `s.List` to `s.c.i.List` within the type.
Some more background on the troublesome part of `TypeMap`:
http://lrytz.github.io/scala-aladdin-bugtracker/displayItem.do%3Fid=1210.html
https://github.com/scala/scala/commit/f8b2b21050e7a2ca0f537ef70e3e0c8eead43abc
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less confusing wording for a dependent method type error
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note to reviewers: the error messages in this file are over the place
about whether they're called "parameter sections", or "argument
lists", or what, so there's no point in being picky about that here
for context see SI-823
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Improvements to the sbt build
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- Move version-related code into a separate VersionUtil object
- Fix the canonical version. The sbt build previously took the full
version including the suffix (plus timestamp and hash) whereas the ant
build uses the version without the suffix
- Include the version number in the generated scaladocs
- Add project descriptions and include them in the scaladocs (like the
ant build does)
- Add other missing scaladoc options to the sbt build
- Copy resources in all subprojects when building dist/mkQuick and
fix `includeFilter` settings to include all required files
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- Docs for actors, compiler, library, reflect and scalap are built by
default. Generated artifacts are removed when cleaning the respective
subproject.
- Fix some exclude patterns for scaladoc sources in the ANT build
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- Add dependencies for scala-swing, scala-continuations-library and
scala-continuations-plugin
- Build all JARs for “pack” in dist/packageBin
- Add “dist/mkQuick” task for building all required projects for
“quick” and creating the launcher scripts
- Add “dist/mkPack” task for packaging all required projects for
“pack” and creating the launcher scripts
- Include classes from “forkjoin” project in scala-library.jar
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Reusing parts of #4593, this commits adds two additional subprojects to
the sbt build:
- repl-jline, which is already used by the ant build, builds the part of
the REPL that depends on JLine. The actual JLine depenency is moved to
this project.
- repl-jline-shaded uses JarJar to create a shaded version of repl-jline
and jline.jar.
Unlike the ant build, this setup does not use any circular dependencies.
dist/mkBin puts all of quick/repl, quick/repl-jline and
quick/repl-jline-shaded onto the classpath of build-sbt/quick/bin/scala.
A future addition to the sbt build for building build-sbt/pack will have
to put the generated classfiles into the correct JARs, mirroring the old
structure.
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- Set the correct unmanagedResourceDirectories for the compiler and
library projects. These projects already had includeFilter definitions
to copy the correct resource files to the target dirs but they were
meaningless without a source dir.
- Set a target path for ‘dist’ to make stream files go to the proper
.gitignored dir.
- Set permissions ugo+rx on all generated script and batch files.
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Multi output problem with delambdafied compilation
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This source is then used to figure out output folder for
compilation product.
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User code compilation with -Ybackend:GenBCode -Ydelambdafy:method
fails for projects with multiple output directories.
The problem has its root in a fact that some `lambdaClass` symbols
the `associatedFile` field is not set. It can be done in Delambdafy.scala
(`makeAnonymousClass` method) and is working for following lambda
examples:
{{{
package acme
object Delambdafy {
type -->[D, I] = PartialFunction[D, I]
def main(args: Array[String]): Unit = {
val result = List(1, 2, 4).map { a =>
val list = List("1", "2", "3").map { _ + "test" }
list.find { _ == a.toString + "test" }
}
lazy val _foo = foo(result) {
case x::xs if x isDefined => x.get.length
case _ => 0
}
lazy val bar: Int => Int = {
case 2 => 13
case _ =>
val v = List(1).map(_ + 42).head
v + 1
}
}
def foo(b: List[Option[String]])(a: List[Option[String]] => Int): Int =
a(b)
}
}}}
but is NOT working for following lambda:
{{{
package acme
object Delambdafy {
type -->[D, I] = PartialFunction[D, I]
def main(args: Array[String]): Unit = {
lazy val _baz = baz {
case 1 =>
val local = List(1).map(_ + 1)
local.head
}
}
def baz[T](f: Any --> Any): Any => Any = f
}
}}}
so that's why source of compilation unit is used to determine output
directory in case when source file is not found for symbol.
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it's Scaladoc, not ScalaDoc
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renaming the existing ScalaDoc and ScalaDocReporter classes might
break stuff, sadly, but at least we can fix the rest
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SI-9497 Fix SetLike#clear() default implementation
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When dealing with mutable collections, it is not safe to assume iterators will remain consistent when the collection is modified mid-traversal. The bug reported in SI-9497 is very similar to SI-7269, "ConcurrentModificationException when filtering converted Java HashMap". Then, only the `retain` method was fixed. This commit fixes `clear`, which had the same problem.
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[SI-9503] Deprecate scala.collection.immutable.PagedSeq
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janekdb/2.11.x-collection-documentation-fixes-previously-4651
2.11.x collection documentation fixes
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- Remove some duplicate method documentation that is now inherited
- Whitespace edits
- Rewording of method docs
- Clearer usage examples
- tparam alignment for some usecase tags
- Prefer () to { } for do nothing bodies
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"macro" is a reserved word since Scala 2.11
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Conform foreach tparam to majority naming convention
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'U' is the common choice for the foreach function result tparam.
This command summarises the naming diversity before and after this change.
$ fgrep -r 'def foreach[' *|cut -f2 -d:|cut -f1 -d'('|tr -s ' '|sed 's/override //g'|sort|uniq -c|sort -nr
Before,
80 def foreach[U]
6 def foreach[C]
6 def foreach[B]
4 final def foreach[U]
3 def foreach[S]
2 inline final def foreach[U]
2 def foreach[A]
1 inline final def foreach[specialized
1 final def foreach[B]
1 * def foreach[U]
1 def foreach[Q]
1 def foreach[D]
1 def foreach[A,B,U]
After,
98 def foreach[U]
5 final def foreach[U]
2 inline final def foreach[U]
1 inline final def foreach[specialized
1 * def foreach[U]
1 def foreach[A,B,U]
(@ symbols removed.)
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SI-4950 Test reduction
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A session test with extra filtering best expresses the intentions.
No check file is required.
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improvements to Windows build & test situation
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experimental for now. destined to be automated via scala-jenkins-infra
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bash's -x flag was flowing down into these scripts, resulting in extra
stuff was getting printed to stderr, resulting in a corrupted
build\pack\META-INF\MANIFEST.MF
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this was failing because the expected output was:
res1: List[String] = List(shello, world.)
but the actual output was:
res1: List[String] = List(shello, world., Picked up _JAVA_OPTIONS: -Duser.home=y:\jenkins)
but the "Picked up..." part caused partest's filters feature to
ignore the entire line (it doesn't anchor matches to start of line.)
This was a tough one to track down.
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Remove two lingering `println`s in non-debug methods of the library.
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misc upgrades to README
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* be clearer about required JDK versions
* eliminate redundancy with existing src/eclipse and src/intellij readmes
* give IntelliJ readme a .md extension
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* link to new scala/contributors room on Gitter
* remove link to old disused CI
* replace list of mailing lists with single link to community page
* link to 2.12 nightlies too, not just 2.11
* update required JDK version info
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SI-9508 fix classpaths in Eclipse configuration
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SI-9513 decrement "deleted" count in OpenHashMap.put() when slot reused
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explicitly specify insertion-order feature in docs
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SI-9492 REPL paste here doc
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