| Commit message (Collapse) | Author | Age | Files | Lines |
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SessionTest session text can include line continuations
and pasted text. Pasted script (which looks like a
double prompt) probably doesn't work.
This commit includes @retronym's SI-9170 one-liner.
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Now both of the overloaded variants have a parameter list.
This seems to make type inference happier. Or it makes someone
happier.
The user is unaware whether `subsets()` takes a default arg.
But happily, empty application still kicks in.
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SI-9097 Remove spurious warning about conflicting filenames
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`pos` test is subsumed by `run`.
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When using delambdafy:method, closure classes are generated late.
The class is added to a map and integrated into the PackageDef in
transformStats.
When declaring a package object, there are potentially multiple
PackageDefs for the same package. In this case, the closure class
was added to all of them. As a result, GenASM / GenBCode would run
multiple times on the closure class. In GenBCode this would trigger
a warning about conflicting filenames.
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SI-6502 More robust REPL :require
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This saves a check file in the crowded test directory.
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- handle missing files gracefully (rather than NPE)
- read the class name with ASM, rather than with a dummy
classloader. The dummy classloader is prone to throwing
`LinkageError`s, as reported in the comments of SI-6502.
Manual test of the original report:
```
% qscala
Welcome to Scala version 2.11.5-20150115-183424-155dbf3fdf (Java HotSpot(TM) 64-Bit Server VM, Java 1.8.0_25).
Type in expressions to have them evaluated.
Type :help for more information.
scala> :require does/not/exist
Cannot read: does/not/exist
scala> classOf[org.junit.Test]
<console>:8: error: object junit is not a member of package org
classOf[org.junit.Test]
^
scala> :require /Users/jason/.m2/repository/junit/junit/4.11/junit-4.11.jar
Added '/Users/jason/.m2/repository/junit/junit/4.11/junit-4.11.jar' to classpath.
scala> classOf[org.junit.Test]
res1: Class[org.junit.Test] = interface org.junit.Test
```
I have commited an automated test that is a minimization of this one.
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SI-7770 mutable.BitSet.toImmutable isn't immutable
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Mark method as deprecated due to it not providing the expected result,
while fixing it will break existing code.
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Introduces methods for textifying classes, methods, InsnLists and
individual AbstractInsnNodes.
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Fix many typos in docs and comments
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This commit corrects many typos found in scaladocs, comments and
documentation. It should reduce a bit number of PRs which fix one
typo.
There are no changes in the 'real' code except one corrected name of
a JUnit test method and some error messages in exceptions. In the case
of typos in other method or field names etc., I just skipped them.
Obviously this commit doesn't fix all existing typos. I just generated
in IntelliJ the list of potential typos and looked through it quickly.
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SI-7965 Support calls to MethodHandle.{invoke,invokeExact}
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These methods are "signature polymorphic", which means that compiler
should not:
1. adapt the arguments to `Object`
2. wrap the repeated parameters in an array
3. adapt the result type to `Object`, but instead treat it as it
it already conforms to the expected type.
Dispiritingly, my initial attempt to implement this touched the type
checker, uncurry, erasure, and the backend.
However, I realized we could centralize handling of this in the typer
if at each application we substituted the signature polymorphic
symbol with a clone that carried its implied signature, which is
derived from the types of the arguments (typechecked without an
expected type) and position within and enclosing cast or block.
The test case requires Java 7+ to compile so is currently embedded
in a conditionally compiled block of code in a run test.
We ought to create a partest category for modern JVMs so we can
write such tests in a more natural style.
Here's how this looks in bytecode. Note the `bipush` / `istore`
before/after the invocation of `invokeExact`, and the descriptor
`(LO$;I)I`.
```
% cat sandbox/poly-sig.scala && qscala Test && echo ':javap Test$#main' | qscala
import java.lang.invoke._
object O {
def bar(x: Int): Int = -x
}
object Test {
def main(args: Array[String]): Unit = {
def lookup(name: String, params: Array[Class[_]], ret: Class[_]) = {
val lookup = java.lang.invoke.MethodHandles.lookup
val mt = MethodType.methodType(ret, params)
lookup.findVirtual(O.getClass, name, mt)
}
def lookupBar = lookup("bar", Array(classOf[Int]), classOf[Int])
val barResult: Int = lookupBar.invokeExact(O, 42)
()
}
}
scala> :javap Test$#main
public void main(java.lang.String[]);
descriptor: ([Ljava/lang/String;)V
flags: ACC_PUBLIC
Code:
stack=3, locals=3, args_size=2
0: aload_0
1: invokespecial #18 // Method lookupBar$1:()Ljava/lang/invoke/MethodHandle;
4: getstatic #23 // Field O$.MODULE$:LO$;
7: bipush 42
9: invokevirtual #29 // Method java/lang/invoke/MethodHandle.invokeExact:(LO$;I)I
12: istore_2
13: return
LocalVariableTable:
Start Length Slot Name Signature
0 14 0 this LTest$;
0 14 1 args [Ljava/lang/String;
13 0 2 barResult I
LineNumberTable:
line 16: 0
}
```
I've run this test across our active JVMs:
```
% for v in 1.6 1.7 1.8; do java_use $v; pt --terse test/files/run/t7965.scala || break; done
java version "1.6.0_65"
Java(TM) SE Runtime Environment (build 1.6.0_65-b14-466.1-11M4716)
Java HotSpot(TM) 64-Bit Server VM (build 20.65-b04-466.1, mixed mode)
Selected 1 tests drawn from specified tests
.
1/1 passed (elapsed time: 00:00:02)
Test Run PASSED
java version "1.7.0_71"
Java(TM) SE Runtime Environment (build 1.7.0_71-b14)
Java HotSpot(TM) 64-Bit Server VM (build 24.71-b01, mixed mode)
Selected 1 tests drawn from specified tests
.
1/1 passed (elapsed time: 00:00:07)
Test Run PASSED
java version "1.8.0_25"
Java(TM) SE Runtime Environment (build 1.8.0_25-b17)
Java HotSpot(TM) 64-Bit Server VM (build 25.25-b02, mixed mode)
Selected 1 tests drawn from specified tests
.
1/1 passed (elapsed time: 00:00:05)
Test Run PASSED
```
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SI-7459 Handle pattern binders used as prefixes in TypeTrees.
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Match translation was incorrect for:
case t => new t.C
case D(t) => new d.C
We would end up with Types in TypeTrees referring to the wrong
symbols, e.g:
// t7459a.scala
((x0$1: this.LM) => {
case <synthetic> val x1: this.LM = x0$1;
case4(){
matchEnd3(new tttt.Node[Any]())
};
matchEnd3(x: Any){
x
}
Or:
// t7459b.scala
((x0$1: CC) => {
case <synthetic> val x1: CC = x0$1;
case4(){
if (x1.ne(null))
matchEnd3(new tttt.Node[Any]())
else
case5()
};
This commit:
- Changes `bindSubPats` to traverse types, as well as terms,
in search of references to bound symbols
- Changes `Substitution` to reuse `Tree#substituteSymbols` rather
than the home-brew substitution from `Tree`s to `Tree`s, if the
`to` trees are all `Ident`s
- extends `substIdentsForTrees` to substitute selections like
`x1.caseField` into types.
I had to dance around the awkward handling of "swatches" (exception
handlers that can be implemented with JVM native type switches) by
duplicating trees to avoid seeing the results of `substituteSymbols`
in `caseDefs` after we abandon that approach if we detect the
patterns are too complex late in the game.
I also had to add an escape hatch for the "type selection from
volatile type" check in the type checker. Without this, the
translation of `pos/t7459c.scala`:
case <synthetic> val x1: _$1 = (null: Test.Mirror[_]).universe;
case5(){
if (x1.isInstanceOf[Test.JavaUniverse])
{
<synthetic> val x2: _$1 with Test.JavaUniverse = (x1.asInstanceOf[_$1 with Test.JavaUniverse]: _$1 with Test.JavaUniverse);
matchEnd4({
val ju1: Test.JavaUniverse = x2;
val f: () => x2.Type = (() => (null: x2.TypeTag[Nothing]).tpe);
.. triggers that error at `x2.TypeTag`.
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[nomerge] SI-9030 don't call private BoxesRunTime.equalsNumChar
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When comparing a Number and a Character, the would emit a call to the
private method. For binary compatibility, this method remains private
in 2.11, so we just use equalsNumObject instead.
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SI-9015 Reject 0x and minor parser cleanup
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Only print error results. Show deprecated forms.
Test for rejected literals and clean up parser
There was no negative test for what constitutes a legal literal.
The ultimate goal is for the test to report all errors in
one compilation.
This commit follows up the removal of "1." syntax to simplify
number parsing. It removes previous paulp code to contain the
erstwhile complexity.
Leading zero is not immediately put to the buffer. Instead,
the empty buffer is handled on evaluation. In particular, an
empty buffer due to `0x` is a syntax error.
The message for obsolete octal syntax is nuanced and deferred
until evaluation by the parser, which is slightly simpler to
reason about.
Improve comment on usage of base
The slice-and-dicey usage of base deserves a better
comment. The difference is that `intVal` sees an empty
char buffer for input `"0"`.
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The alternative, flat representation of classpath elements
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This commit integrates with the compiler the whole flat classpath
representation build next to the recursive one as an alternative.
From now flat classpath really works and can be turned on. There's
added flag -YclasspathImpl with two options: recursive (the default
one) and flat.
It was needed to make the dynamic dispatch to the particular
classpath representation according to the chosen type of a classpath
representation.
There's added PathResolverFactory which is used instead of a concrete
implementation of a path resolver. It turned out that only a small
subset of path resolvers methods is used outside this class in Scala
sources. Therefore, PathResolverFactory returns an instance of a base
interface PathResolverResult providing only these used methods.
PathResolverFactory in combination with matches in some other places
ensures that in all places using classpath we create/get the proper
representation.
Also the classPath method in Global is modified to use the dynamic
dispatch. This is very important change as a return type changed to
the base ClassFileLookup providing subset of old ClassPath public
methods. It can be problematic if someone was using in his project
the explicit ClassPath type or public methods which are not provided
via ClassFileLookup. I tested flat classpath with sbt and Scala IDE
and there were no problems. Also was looking at sources of some other
projects like e.g. Scala plugin for IntelliJ and there shouldn't be
problems, I think, but it would be better to check these changes
using the community build.
Scalap's Main.scala is changed to be able to use both implementations
and also to use flags related to the classpath implementation.
The classpath invalidation is modified to work properly with the old
(recursive) classpath representation after changes made in a Global.
In the case of the attempt to use the invalidation for the flat cp it
just throws exception with a message that the flat one currently
doesn't support the invalidation. And also that's why the partest's
test for the invalidation has been changed to use (always) the old
implementation. There's added an adequate comment with TODO to this
file.
There's added partest test generating various dependencies
(directories, zips and jars with sources and class files) and testing
whether the compilation and further running an application works
correctly, when there are these various types of entries specified as
-classpath and -sourcepath. It should be a good approximation of real
use cases.
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The structure of scalap's Main has been refactored.
EmptyClasspath is deleted. It looks that it was unused since this
commit: https://github.com/scala/scala/commit/e594fe58ef8116a4bd2560ad0a856ad58ae9db33
Also classpath logging is changed and now uses asClassPathString
method. It was needed to modify one test because of that but it
won't depend on a particular representation.
There aren't changes in the way scalap works.
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SI-9027 Parser no longer consumes space after multi XML elements
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Once the parser starts looking for more <elements>, it should
still lookahead speculatively, leaving any remaining whitespace,
including newlines, after the last element.
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SI-9003 Eagerly capture more potentially mutable binders
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This is a re-run of SI-5158 in two different contexts.
As reported, the result of `unapply[Seq]` under name based pattern
matching might not guarantee stability of results of calls to
`_1`, `apply(i)`, etc, so we call these eagerly, and call them
once only.
I also found a case in regular pattern matching that we hadn't
accounted for: extracting elements of sequences (either from
a case class or from an `unapplySeq`) may also be unstable.
This commit changes `ExtractorTreeMaker` to force storage
of such binders, even under `-optimize`. This parallels the change
to `ProductExtractorTreeMaker` in 8ebe8e3e8.
I have added a special case for traditional `unapply` methods
returning `Option`. This avoids a change for:
```
% cat test/files/run/t9003b.scala
object Single {
def unapply(a: Any) = Some("")
}
object Test {
def main(args: Array[String]): Unit = {
"" match {
case Single(x) =>
(x, x)
}
}
}
% qscalac -optimize -Xprint:patmat test/files/run/t9003b.scala 2>&1 | grep --context=5 get
case <synthetic> val x1: Any = "";
case5(){
<synthetic> val o7: Some[String] = Single.unapply(x1);
if (o7.isEmpty.unary_!)
matchEnd4({
scala.Tuple2.apply[String, String](o7.get, o7.get);
()
})
else
case6()
};
% scalac-hash v2.11.4 -optimize -Xprint:patmat test/files/run/t9003b.scala 2>&1 | grep --context=5 get
case <synthetic> val x1: Any = "";
case5(){
<synthetic> val o7: Some[String] = Single.unapply(x1);
if (o7.isEmpty.unary_!)
matchEnd4({
scala.Tuple2.apply[String, String](o7.get, o7.get);
()
})
else
case6()
};
```
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When unpickling a class, we create stub symbols for references
to classes absent from the current classpath. If these references
only appear in method signatures that aren't called, we can
proceed with compilation. This is in line with javac.
We're getting better at this, but there are still some gaps.
This bug is about the behaviour when a package is completely
missing, rather than just a single class within that package.
To make this work we have to add two special cases to the unpickler:
- When unpickling a `ThisType`, convert a `StubTermSymbol` into
a `StubTypeSymbol`. We hit this when unpickling
`ThisType(missingPackage)`.
- When unpickling a reference to `<owner>.name` where `<owner>`
is a stub symbol, don't call info on that owner, but rather
allow the enclosing code in `readSymbol` fall through to
create a stub for the member.
The test case was distilled from an a problem that a Spray user
encountered when Akka was missing from the classpath.
Two existing test cases have progressed, and the checkfiles are
accordingly updated.
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It passed in PR validation but failed in a later run.
There are some clever ideas bouncing around to make it
stable, but in the meantime I'll shunt it into disabled.
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References to Threads would be retained long after their termination if
reflection is used in them. This led to a steady, long memory leak in
applications using reflection in thread pools.
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SI-5938 Test for a FSC bug with mixin, duplicate static forwarders
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Under resident compilation, we were getting multiple copies of static
forwarders created for mixed in methods. It seems like the bug was
fixed as a by-product of #4040.
This commit adds a test to show this. I've confirmed that the test
fails appropriately with 2.11.4.
For future reference, before I figured out how to write the test
for this one (test/resident doesn't seem to let you run the code
after compiling it), I was using bash to test as follows:
(export V=2.11.x; (scalac-hash $V sandbox/t5938_1.scala; (for i in 1 2; do echo sandbox/t5938.scala; done; printf '\n') | scalac-hash $V -Xresident); stty echo; scala-hash $V X ; echo ':javap -public X' | scala-hash $V);
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SI-8253 Fix incorrect parsing of <elem xmlns={f("a")}/>
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The spliced application was placed in the `attrMap` in
`SymbolicXMLBuilder` and later incorrectly matched by a pattern
intended only to match:
xml.Text(s)
That attribute value is generated by parsing:
<elem xmlns='a'/>
So the net effect was that the two fragments of XML were identical!
This commit sharpens up the match to really look for a syntactic
`_root_.scala.xml.Text("...")`.
The test just prints the parse trees of a variety of cases, as we
we should not test the modularized XML library in scala/scala.
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SI-5639 Fix spurious discarding of implicit import
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In Scala fa0cdc7b (just before 2.9.0), a regression in implicit
search, SI-2866, was discovered by Lift and fixed. The nature of
the regression was that an in-scope, non-implicit symbol failed to
shadow an eponymous implicit import.
The fix for this introduced `isQualifyingImplicit` which discards
in-scope implicits when the current `Context`'s scope contains
a name-clashing entry.
Incidentally, this proved to be a shallow solution, and we later
improved shadowing detection in SI-4270 / 9129cfe9. That picked
up cases where a locally defined symbol in an intervening scope
shadowed an implicit.
This commit includes the test case from the comments of SI-2866.
Part of it is tested as a neg test (to test reporting of ambiguities),
and the rest is tested in a run test (to test which implicits are
picked.)
However, in the test case of SI-5639, we see that the scope lookup
performend by `isQualifyingImplicit` is fooled by a "ghost" module
symbol. The apparition I'm referring to is entered when
`initializeFromClassPath` / `enterClassAndModule` encounters
a class file named 'Baz.class', and speculatively enters _both_ a
class and module symbol. AFAIK, this is done to defer parsing the
class file to determine what inside. If it happens to be a Java
compiled class, the module symbol is needed to house the static
members.
This commit adds a condition that `Symbol#exists` which shines a torch
(forces the info) in the direction of the ghost module symbol. In our
test, this causes it to vanish, as we only need a class symbol for
the Scala defined `class Baz`.
The existing `pos` test for this actually did not exercise the bug,
separate compilation is required. It was originally checked in to
`pending` with this error, and then later moved to `pos` when someone
noticed it was not failing.
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SI-6502 Reenables loading jars into the running REPL (regression in 2.10)
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SI-8925, SI-7407 test cases, fixed in new backend
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Given that the issues are old (2.10) and we move to the new backend
in 2.12, I don't plan to fix them in GenASM.
The test case for 7407 existed already, this commit just adds
`-Yopt:l:none` to the flags to make no dead code is eliminated.
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Without loss of generality or convenience, but helps
reduce the number of files in test/files and may reduce
compile times for test suite.
This commit includes the fix from #3963 and an extra
test of that fix that ensures the stack doesn't grow
on chained drops.
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SI-8835 Fix implementation of Iterator drop to remove quadratic behavior
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SI-5665 Test case for fixed private[this], trait crasher
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Fixed in SI-5508 / cca4d51db.
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Make t8960 pass under delambdafy:method
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When using delambdafy:method, anonymous function classes are not
currently specialized, as noted here:
https://github.com/scala/scala/blob/f08e96571479552b103b15cc2d40ea5454999546/src/compiler/scala/tools/nsc/transform/Delambdafy.scala#L26
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SI-1994 Test case for fixed overriding problem
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