| Commit message (Collapse) | Author | Age | Files | Lines |
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Scalameta et al need to be able to customize the
type completer behavior, so we must use factory methods
to instantiate them, rather than instantiating the classes
directly.
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Create named subclasses, preserve factory methods for external users.
Make explicit that TypeCompleterBase is not meant for wrapping.
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mkTypeCompleter is not suitable for wrapping
potentially polymorphic completers
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- remove logging wrapper that also does important work
- `assignAndEnterSymbol(tree)` --> `enterInScope(assignMemberSymbol(tree))`
- reduce redundant type test (we know it's an import/package/member)
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Some places in the compiler, and many places in macros, use
`untypecheck` (aka `resetAttrs`) to strip types and local symbols
from a tree before retypechecking it under some different context.
The refactoring of the desugaring of vals and vars in Scala 2.12.0
broke an assumption in this facility.
When a ValDef must be split into multiple members (e.g. a field and
a getter, or a perhaps also a setter), the ValDef that was parsed
assumes the role of the `field`, and the trees for other members are
stached by `Namer` to the `synthetics` map of the compilation unit,
in order to spliced into the right statement list by typechecking.
See `enterGetterSetter` for more details.
However, the parsed ValDef is now used verbatim, carrying the meaning
(ie, the symbol) of the `private[this]` field. This tree now had
an inconsistency between the flags in `tree.mods.flags` and
`tree.symbol.flags`. `tree.name` also differed from `tree.symbol.name`
(the latter was renamed to be a local name, ie one with a trailing space.)
When `ResetAttrs` stripped off the symbol and we retypechecked, we'd
end up with two symbols in scope with the same name.
In the first from the `run` test:
```
================================================================================
{
class a extends scala.AnyRef {
def <init>(): a = {
a.super.<init>();
()
};
private[this] val x: Int = 42;
<stable> <accessor> def x: Int = a.this.x
};
new a()
}
{
class a extends scala.AnyRef {
def <init>() = {
super.<init>();
()
};
val x = 42; // oops, the name is "x" rather than "x " and we've missing `private[this]`!
<stable> <accessor> def x: Int = a.this.x
};
new a()
}
scala.tools.reflect.ToolBoxError: reflective typecheck has failed: x is already defined as value x
```
This commit uses the flags and name of the symbol in `typedValDef`.
I've also had to modify the internals of `CodePrinter` to use the
implicit, override, and deferred flags from the modifiers of an
accessor when recovering pre-typer tree for a ValDef.
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They remain ValDefs until then.
- remove lazy accessor logic
now that we have a single ValDef for lazy vals,
with the underlying machinery being hidden until the fields phase
leave a `@deprecated def lazyAccessor` for scala-refactoring
- don't skolemize in purely synthetic getters,
but *do* skolemize in lazy accessor during typers
Lazy accessors have arbitrary user code, so have to skolemize.
We exempt the purely synthetic accessors (`isSyntheticAccessor`)
for strict vals, and lazy accessors emitted by the fields phase
to avoid spurious type mismatches due to issues with existentials
(That bug is tracked as https://github.com/scala/scala-dev/issues/165)
When we're past typer, lazy accessors are synthetic,
but before they are user-defined to make this hack less hacky,
we could rework our flag usage to allow for
requiring both the ACCESSOR and the SYNTHETIC bits
to identify synthetic accessors and trigger the exemption.
see also https://github.com/scala/scala-dev/issues/165
ok 7 - pos/existentials-harmful.scala
ok 8 - pos/t2435.scala
ok 9 - pos/existentials.scala
previous attempt: skolemize type of val inside the private[this] val
because its type is only observed from inside the
accessor methods (inside the method scope its existentials are skolemized)
- bean accessors have regular method types, not nullary method types
- must re-infer type for param accessor
some weirdness with scoping of param accessor vals and defs?
- tailcalls detect lazy vals, which are defdefs after fields
- can inline constant lazy val from trait
- don't mix in fields etc for an overridden lazy val
- need try-lift in lazy vals: the assign is not seen in uncurry
because fields does the transform (see run/t2333.scala)
- ensure field members end up final in bytecode
- implicit class companion method: annot filter in completer
- update check: previous error message was tangled up with unrelated
field definitions (`var s` and `val s_scope`),
now it behaves consistently whether those are val/vars or defs
- analyzer plugin check update seems benign, but no way to know...
- error message gen: there is no underlying symbol for a deferred var
look for missing getter/setter instead
- avoid retypechecking valdefs while duplicating for specialize
see pos/spec-private
- Scaladoc uniformly looks to field/accessor symbol
- test updates to innerClassAttribute by Lukas
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Usually, `contains` should not look into class symbol infos.
For instance, we expect that:
```
scala> trait C { def foo: Int }; typeOf[C].contains(IntClass)
defined trait C
res1: Boolean = false
```
We do, however, look at the decls of a `RefinedType` in contains:
```
scala> typeOf[{ def foo: Int }].contains(IntClass)
res2: Boolean = true
```
Things get a little vague, however, when we consider a type ref
to the refinement class symbol of a refined type.
```
scala> TypeRef(NoPrefix, typeOf[{ def foo: Int }].typeSymbol, Nil)
res3: $r.intp.global.Type = AnyRef{def foo: Int}
scala> .contains(IntClass)
res4: Boolean = false
```
These show up in the first element of the base type seq of a refined
type, e.g:
```
scala> typeOf[{ def foo: Int }].typeSymbol.tpe_*
res5: $r.intp.global.Type = AnyRef{def foo: Int}
scala> typeOf[{ def foo: Int }].baseTypeSeq(0).getClass
res7: Class[_ <: $r.intp.global.Type] = class scala.reflect.internal.Types$RefinementTypeRef
scala> typeOf[{ def foo: Int }].typeSymbol.tpe_*.getClass
res6: Class[_ <: $r.intp.global.Type] = class scala.reflect.internal.Types$RefinementTypeRef
```
This commit takes the opinion that a `RefinementTypeRef` should be
transparent with respect to `contains`. This paves the way for fixing
the base type sequences of existential types over refinement types.
The implementation of `ContainsCollector` was already calling
`normalize`, which goes from `RefinementTypeRef` to `RefinedType`.
This commit maps over the result, which looks in the parents and
decls.
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- fix initialization NPE in doc headers
- fix assertion errors for java fields
- ignore comments when deciding where to put interface methods
- consider DocDefs when checking for constructors
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Derive/filter/propagate annotations in info transformer,
don't rely on having type checked the derived trees in order
to see the annotations.
Use synthetics mechanism for bean accessors -- the others
will soon follow.
Propagate inferred tpt from valdef to accessors
by setting type in right spot of synthetic tree
during the info completer.
No need to add trees in derivedTrees, and get rid of
some overfactoring in method synthesis, now that we have
joined symbol and tree creation.
Preserve symbol order because tests are sensitive to it.
Drop warning on potentially discarded annotations,
I don't think this warrants a warning.
Motivated by breaking the scala-js compiler, which relied
on annotations appearing when trees are type checked.
Now that ordering constraint is gone in the new encoding,
we may as well finally fix annotation assignment.
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Remove obsolete hack for BeanSetter's RHS
Use currentOwner.isClass instead of exprOwner.isLocalDummy
Refactor: shortest branches first in if/else
Fix comments from when the prototype ran before refchecks
Also, store `isScala212` as a `val` in `Namer`
since the `def` on `settings` parses the version each time...
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One step towards teasing apart the mixin phase, making
each phase that adds members to traits responsible for
mixing in those members into subclasses of said traits.
Another design tenet is to not emit symbols or trees
only to later remove them. Therefore, we model a
val in a trait as its accessor. The underlying field
is an implementation detail. It must be mixed into
subclasses, but has no business in a trait (an interface).
Also trying to reduce tree creation by changing less in subtrees
during tree transforms.
A lot of nice fixes fall out from this rework:
- Correct bridges and more precise generic signatures for
mixed in accessors, since they are now created before erasure.
- Correct enclosing method attribute for classes nested in trait fields.
Trait fields are now created as MethodSymbol (no longer TermSymbol).
This symbol shows up in the `originalOwner` chain of a class declared
within the field initializer. This promoted the field getter to
being the enclosing method of the nested class, which it is not
(the EnclosingMethod attribute is a source-level property).
- Signature inference is now more similar between vals and defs
- No more field for constant-typed vals, or mixed in accessors
for subclasses. A constant val can be fully implemented in a trait.
TODO:
- give same treatment to trait lazy vals (only accessors, no fields)
- remove support for presuper vals in traits
(they don't have the right init semantics in traits anyway)
- lambdalift should emit accessors for captured vals in traits,
not a field
Assorted notes from the full git history before squashing below.
Unit-typed vals: don't suppress field
it affects the memory model -- even a write of unit to a field is relevant...
unit-typed lazy vals should never receive a field
this need was unmasked by test/files/run/t7843-jsr223-service.scala,
which no longer printed the output expected from the `0 to 10 foreach`
Use getter.referenced to track traitsetter
reify's toolbox compiler changes the name of the trait
that owns the accessor between fields and constructors (`$` suffix),
so that the trait setter cannot be found when doing mkAssign in constructors
this could be solved by creating the mkAssign tree immediately during fields
anyway, first experiment: use `referenced` now that fields runs closer
to the constructors phase (I tried this before and something broke)
Infer result type for `val`s, like we do for `def`s
The lack of result type inference caused pos/t6780 to fail
in the new field encoding for traits, as there is no separate accessor,
and method synthesis computes the type signature based on the ValDef tree.
This caused a cyclic error in implicit search, because now the
implicit val's result type was not inferred from the super member,
and inferring it from the RHS would cause implicit search to consider
the member in question, so that a cycle is detected and type checking fails...
Regardless of the new encoding, we should consistently infer result types
for `def`s and `val`s.
Removed test/files/run/t4287inferredMethodTypes.scala and test/files/presentation/t4287c,
since they were relying on inferring argument types from "overridden" constructors
in a test for range positions of default arguments. Constructors don't override,
so that was a mis-feature of -Yinfer-argument-types.
Had to slightly refactor test/files/presentation/doc, as it was relying
on scalac inferring a big intersection type to approximate the anonymous
class that's instantiated for `override lazy val analyzer`.
Now that we infer `Global` as the expected type based on the overridden val,
we make `getComment` private in navigating between good old Skylla and Charybdis.
I'm not sure why we need this restriction for anonymous classes though;
only structural calls are restricted in the way that we're trying to avoid.
The old behavior is maintained nder -Xsource:2.11.
Tests:
- test/files/{pos,neg}/val_infer.scala
- test/files/neg/val_sig_infer_match.scala
- test/files/neg/val_sig_infer_struct.scala
need NMT when inferring sig for accessor
Q: why are we calling valDefSig and not methodSig?
A: traits use defs for vals, but still use valDefSig...
keep accessor and field info in synch
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- Language imports are preceding other imports
- Deleted empty file: InlineErasure
- Removed some unused private[parallel] methods in
scala/collection/parallel/package.scala
This removes hundreds of warnings when compiling with
"-Xlint -Ywarn-dead-code -Ywarn-unused -Ywarn-unused-import".
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This logic was scattered all over the hierarchy,
even though it's only needed in one spot, and is unlikely to evolve.
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Originally (modulo renaming & reduction of double negation in previous commit):
```
def deriveAccessors(vd: ValDef) = vd.mods.isLazy || !(
!owner.isClass
|| (vd.mods.isPrivateLocal && !vd.mods.isCaseAccessor) // this is an error -- now checking first
|| (vd.name startsWith nme.OUTER)
|| (context.unit.isJava) // pulled out to caller
|| isEnumConstant(vd)
)
def deriveAccessorTrees(vd: ValDef) = !(
(vd.mods.isPrivateLocal && !vd.mods.isLazy) // lazy was pulled out to outer disjunction
|| vd.symbol.isModuleVar // pulled out to caller
|| isEnumConstant(vd))
```
With changes in comments above, these conditions are now captured by one method.
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Give Getter control over whether a setter is needed. For now,
only mutable ValDefs entail setters. In the new trait encoding,
a trait val will also receive a setter from the start.
Similarly, distinguish whether to derive a field from deferredness of the val.
(Later, fields will not be emitted for traits, deferred or not.)
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- Added `since` to deprecation statement
- Added unit to parameter list
- Removed usage of deprecated method polyType
- Replaced deprecated `debugwarn` with `devWarning`
- Changed switch statement to if else in order to remove a warning
- Switched implementation of `init` and `processOptions` to prevent
warning
- Replaced deprecated `Console.readLine` with `scala.io.StdIn.readLine`
- Replaced deprecated `startOrPoint` with `start`
- Replaced deprecated `tpe_=` with `setType`
- Replaced deprecated `typeCheck` with `typecheck`
- Replaced deprecated `CompilationUnit.warning` with `typer.context.warning`
- Replaced deprecated `scala.tools.nsc.util.ScalaClassLoader` with `scala.reflect.internal.util.ScalaClassLoader`
- Replaced deprecated `scala.tools.ListOfNil` with `scala.reflect.internal.util.ListOfNil`
- Replaced deprecated `scala.tools.utils.ScalaClassLoader` with `scala.reflect.internal.util.ScalaClassLoader`
- Replaced deprecated `emptyValDef` with `noSelfType`
- In `BoxesRunTime` removed unused method and commented out unused values. Did not delete to keep a reference to the values. If they are deleted people might wonder why `1` and `2` are not used.
- Replaced deprecated `scala.tools.nsc.util.AbstractFileClassLoader` with `scala.reflect.internal.util.AbstractFileClassLoader`
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... replaced by hasPackageFlag, hasSymbolIn, getterIn, setterIn.
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When we name an implicit class, `enterImplicitWrapper` is called,
which enters the symbol for the factory method into the
owning scope. The tree defining this factory method is stowed into
`unit.synthetics`, from whence it will be retrieved and incorporated
into the enclosing tree during typechecking (`addDerivedTrees`).
The entry in `unit.synthetics` is removed at that point.
However, in the presentation compiler, we can typecheck a unit
more than once in a single run. For example, if, as happens
in the enclosed test, a call to ask for a type at a given
position interrupts type checking of the entire unit, we
can get into a situation whereby the first type checking
invocation has consumed the entry from `unit.synthetics`,
and the second will crash when it can't find an entry.
Similar problems have been solved in the past in
`enterExistingSym` in the presentation compiler. This method
is called when the namer encounters a tree that already has
a symbol attached. See 0b78a0196 / 148736c3df.
This commit takes a two pronged approach.
First, `enterExistingSym` is extended to handle implicit classes.
Any previous factory method in the owning scope is removed, and
`enterImplicitWrapper` is called to place a new tree for the factory
into `unit.synthetics` and to enter its symbol into the owning scope.
Second, the assertions that could be tripped in `addDerivedTrees`
and in `ImplicitClassWrapper#derivedSym` have been converted to
positioned errors.
The first change is sufficient to fix this bug, but the second
is also enough to make the enclosed test pass, and has been retained
as an extra layer of defence.
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And uses a map per-compilation unit, rather than one per Typer.
One small change required: we now need to clear this map in the
the interactive compiler which reuses compilation units, rather
than in the call to `Typer#reset`.
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TreeDSL has no future - it was always a temporary measure
waiting for something like quasiquotes to come along. In this
commit I cull as much of it as I can, especially the delicate
matter of creating new DefDefs and ValDefs, which I completely
turn over to the old style creators.
I unified all the symbol-based DefDef and ValDef creators under
a single method, since it was yet another place where ctrl-C and
ctrl-V were being punched with glee. Was beaten to the punch on
adding copyTypeDef to fill out the *Def creators.
Eliminated as many redundant positioning calls as I could find.
If you are creating a DefTree tree based on a symbol, it will
always have an atPos(sym.pos) { ... } wrapped around it. You
don't need another one.
All of this is motivated by positions work: positions are
assigned in so many places and in such an ad hoc fashion that
it is impossible to bring consistency to that without first
bringing some consistency to tree creation.
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The implementation had come to depend on finalResultType
accidentally doing things beyond its charter - in particular,
widening types. After hunting down and fixing the call sites
depending on the bugs, I was able to rewrite the method to do
only what it's supposed to do.
I threw in a different way of writing it entirely to suggest how
some correctness might be obtained in the future. It's a lot
harder for a method written like this to break.
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This is a retry of #2801 after figuring out the range position
error. Should there be anyone out there who compiles with -Xdev,
know that this commit eliminates the 1406 errors one presently
incurs compiling src/library.
A val declared in source code receives only one tree from the
parser, but two are needed - one for the field and one for the
getter. I discovered long ago that if the val had an existential
type, this was creating issues with incompatible existentials
between the field and the getter. However the remedy for that
did not take into account the whole of the wide range of super
subtle issues which accompany tree duplication.
In particular, the duplicated tree must be given not only a
fresh TypeTree(), but that TypeTree cannot share the same
original without running afoul of range position invariants.
That's because typedTypeTree resurrects the original tree with
whatever position it has - so the "original" needs to be a
duplicate of the original with a focused position.
Should the call to TypeTree.duplicate also duplicate the original?
I think so, but I bequeath this question to others.
This commit also eliminated some duplicate error messages, because
duplicate suppression depends on the errors having the same position.
See c478eb770d, 7a6fa80937 for previous related work.
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Optimistically, this is preparation for a day when we don't
let numeric types drift with the winds. Even without the optimism
it's a good idea. It flushed out an undocumented change in
the math package object relative to the methods being forwarded (a
type is widened from what is returned in java) so I documented
the intentionality of it.
Managing type coercions manually is a bit tedious, no doubt,
but it's not tedious enough to warrant abandoning type safety
just because java did it.
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We have lots of core classes for which we need not go through
the symbol to get the type:
ObjectClass.tpe -> ObjectTpe
AnyClass.tpe -> AnyTpe
I updated everything to use the concise/direct version,
and eliminated a bunch of noise where places were calling
typeConstructor, erasedTypeRef, and other different-seeming methods
only to always wind up with the same type they would have received
from sym.tpe. There's only one Object type, before or after erasure,
with or without type arguments.
Calls to typeConstructor were especially damaging because (see
previous commit) it had a tendency to cache a different type than
the type one would find via other means. The two types would
compare =:=, but possibly not == and definitely not eq. (I still
don't understand what == is expected to do with types.)
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Sifted through extraneous methods trying to find consistency,
consolidating and deprecating as I went. The original motivation
for all this was the restoration of LOCAL_SUFFIX to originalName,
because:
It looks like in an attempt to make originalName print
consistently with decodedName, I went a little too far and
stripped invisible trailing spaces from originalName. This
meant outer fields would have an originalName of '$outer'
instead of '$outer ', which in turn could have caused them to
be mis-recognized as outer accessors, because the logic of
outerSource hinges upon "originalName == nme.OUTER".
I don't know if this affected anything - I noticed it by
inspection, improbably enough.
Deprecated originalName - original, compared to what? - in
favor of unexpandedName, which has a more obvious complement.
Introduced string_== for the many spots where people have
given up and are comparing string representations of names.
A light dusting of types is still better than nothing.
Editoral note: LOCAL_SUFFIX is the worst. Significant trailing
whitespace! It's a time bomb.
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Maybe this was useful in some way; but no way I ever saw.
I have comments which tell me this is exposed in the IDE so
I left a stub.
I also removed mkCheckInit. That probably sounds like it's related
to -Xcheckinit. Guess again, guy-who-thinks-names-mean-things. It
was only used by -Xcheck-null.
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* excluded from merge:
[nomerge] SI-6667 Demote a new ambiguity error to a lint warning.
Revert "SI-6422: add missing Fractional and Integral alias in scala package"
[backport] SI-6482, lost bounds in extension methods.
* commit '81d8f9d3da': (31 commits)
reflecting @throws defined in Scala code
pullrequest feedback
SI-5833 Fixes tail-of-Nil problem in RefinedType#normalizeImpl
SI-6017 Scaladoc: Show all letters without dangling links
SI-6017 Generate Scaladoc's index links in Scala side
SI-5313 Minor code cleanup for store clobbering
SI-5313 Test clobbers on the back edge of a loop
SI-7033 Be symful when creating factory methods.
SI-7022 Additional test case for value class w. bounds
SI-7039 unapplySeq result type independent of subpattern count
evicts javac-artifacts.jar
SI-7008 @throws annotations are now populated in reflect
Fix SI-6578. Deprecated `askType` because of possible race conditions in type checker.
SI-7029 - Make test more robust
SI-7029 - Makes sure that uncaught exceptions are propagated to the UEH for the global ExecutionContext
SI-6941 tests
SI-6686 drop valdef unused in flatMapCond's block
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Conflicts:
src/compiler/scala/tools/nsc/backend/opt/DeadCodeElimination.scala
src/compiler/scala/tools/nsc/transform/ExtensionMethods.scala
src/reflect/scala/reflect/internal/Definitions.scala
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SI-7033 Be symful when creating factory methods.
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Implicit class factory methods were synthesizing the
reference to the class as `Ident(classDef.name)`, which
was unhygienic in case of `implicit class X[X]`.
To use symbols without causing a cycle, I switched from
`REF(symbol)` to `Ident(symbol)`. The former calls into:
at scala.reflect.internal.TreeGen.mkAttributedSelect(TreeGen.scala:184)
at scala.reflect.internal.TreeGen.mkAttributedRef(TreeGen.scala:124)
at scala.reflect.internal.TreeGen.mkAttributedRef(TreeGen.scala:130)
at scala.tools.nsc.ast.TreeDSL$CODE$.REF(TreeDSL.scala:307)
which forces the info of enclosing module and forms a cycle.
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Conflicts:
src/compiler/scala/tools/nsc/typechecker/Contexts.scala
src/compiler/scala/tools/nsc/typechecker/Namers.scala
src/compiler/scala/tools/nsc/typechecker/Typers.scala
src/continuations/plugin/scala/tools/selectivecps/CPSAnnotationChecker.scala
src/reflect/scala/reflect/internal/AnnotationCheckers.scala
src/reflect/scala/reflect/internal/Symbols.scala
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- when typing (and naming) a ValDef, tpt and rhs are now type checked
in the same context (the inner / ValDef context). this does not change
any behavior, but is more uniform (same as for DefDef). martin told me
(offline) that this change is desirable if it doesn't break anything.
(it doesn't).
- typeSig is now more uniform with a separate method for each case
(methodSig, valDefSig, etc). methodSig was cleaned up (no more variables)
and documented. the type returned by methodSig no longer contains /
refers to type skolems, but to the actual type parameters (so we don't
need to replace the skolems lateron).
- documentation on constructor contexts, type skolems
- more tests for SI-5543
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Annotations on abstract vals which are not meta-annotated
were silently discarded. Still discarded, only less silently.
I warned on as many "lost annotation" situations as I was
reasonably able to cover without false positives.
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When all the logic in a method is for symbol creation,
and then at the last minute it throws on a hastily zipped
ValDef, it's really not a tree generation method, it's a
symbol creation method.
Eliminated redundancy and overgeneralization; marked some
bits for further de-duplication. Did my best with my limited
archeological skills to document what is supposed to be
happening in eliminateModuleDefs.
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* commit 'refs/pull/1718/head':
Expunged the .net backend.
Conflicts:
build.detach.xml
build.examples.xml
build.xml
project/Build.scala
src/compiler/scala/tools/ant/Scalac.scala
src/compiler/scala/tools/nsc/Global.scala
src/compiler/scala/tools/nsc/settings/StandardScalaSettings.scala
src/compiler/scala/tools/nsc/symtab/clr/TypeParser.scala
src/compiler/scala/tools/nsc/transform/Mixin.scala
src/intellij/compiler.iml.SAMPLE
tools/buildcp
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It lives on in a branch born from this commit's parent.
It's abrupt; no attempt is made to offer a "smooth transition"
for the serious msil userbase, population zero. If anyone feels
very strongly that such a transition is necessary, I will be
happy to talk you into feeling differently.
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And simplify the name implicits.
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* merge-2.10.wip-x: (24 commits)
SI-6023 reify abstract vals
Removing controversial `either` method from Futures API.
SI-6695 Test case for fixed Array match bug
adds comments to standard attachments
SI-6673 fixes macro problems with eta expansions
Restore the opimization apparently lost after merge.
SI-6624 set info of case pattern binder to help find case field accessors
Scaladoc update for collection.mutable.MultiMap
SI-6663: don't ignore type parameter on selectDynamic invocation
SI-6551: don't insert apply call in polymorphic expression.
SI-6634 Fixes data corruption issue in ListBuffer#remove
Fixes SI-6628, Revert "Fix for view isEmpty."
SI-6661 - Remove obsolete implicit parameter of scala.concurrent.promise method
Fixes SI-6150 - backport to 2.10.x branch.
SI-5330, SI-6014 deal with existential self-type
Fixes SI-6559 - StringContext not using passed in escape function.
SI-6648 copyAttrs must preserve TypeTree#wasEmpty
Fix raw string interpolator: string parts which were after the first argument were still escaped
sane printing of renamed imports
SI-6440 Address regressions around MissingRequirementError
...
Conflicts:
src/library/scala/collection/generic/IndexedSeqFactory.scala
src/library/scala/collection/mutable/ListBuffer.scala
src/reflect/scala/reflect/internal/Symbols.scala
src/reflect/scala/reflect/internal/Types.scala
test/files/run/t6150.scala
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Type trees created by MethodSynthesis for abstract val getters carry symless originals,
which are unusable for reification purposes
(or the result of reification will be unhygienic).
To combat this, type trees for such getters are now created empty,
i.e. without any `tpe` set, just having an original assigned.
Subsequent `typedTypeTree` invocations fill in the `tpe` and
update the original to be symful.
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Removing code from this neighborhood is more difficult than
elsewhere, making it all the more important that it be done.
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This reverts commit 951fc3a486.
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I want to get this commit into the history because
the tests pass here, which demonstrates that every commented
out method is not only unnecessary internally but has zero
test coverage. Since I know (based on the occasional source
code comment, or more often based on knowing something about
other source bases) that some of these can't be removed
without breaking other things, I want to at least record
a snapshot of the identities of all these unused and
untested methods.
This commit will be reverted; then there will be another
commit which removes the subset of these methods which I
believe to be removable. The remainder are in great need of
tests which exercise the interfaces upon which other
repositories depend.
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A dizzying number of unused imports, limited to files
in src/compiler. I especially like that the unused import
option (not quite ready for checkin itself) finds places
where feature implicits have been imported which are no
longer necessary, e.g. this commit includes half a dozen
removals of "import scala.language.implicitConversions".
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