| Commit message (Collapse) | Author | Age | Files | Lines |
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Otherwise we can think that `+` in `1 + BigInt(2)` refers
to a method in `Int`.
In general, this protects the IDE from observing results from
"exploratory" typing which is discarded as the compiler backtracks
to another possibility.
This protection subsumes the condition that checked for overloaded
types: presentation/t7458 now passes without this.
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We shouldn't observe tree types under silent mode.
The enclosed test is a standalone version of `1 + BigInt(2)`,
a standard example of exploratory typing in Scala. Once we determine
that none of the `+` methods in `Int` accepts (possibly implicitly
coerced `BigInt`), we have to backtrack and look for a view from
`Int => { +(_: BigInt): ? }`.
The next commit will correct the problem.
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targeted type-checked
When asking for targeted typecheck, the located tree may have overloaded types
is the source isn't yet fully typechecked (e.g., a select tree for an
overloaded method). This is problematic as it can lead to unknown 'hovers',
broken hyperlinking that suddenly starts working, unresolved ScalaDoc comments,
and similar, in the Scala IDE.
With this commit we are hardening the contract of `askTypeAt` to return the
same type whether the file was fully type-checked or targeted type-checked.
This is done by preventing the typechecker to stop too early if the `located`
tree has an overloaded type. Furthermore, I'm assuming that if `located.tpe`
is of type `OverloadedType`, by letting the compiler carry-on the typechecking,
the `located.tpe` will eventually be resolved to a non-overloaded type. Said
otherwise, I expect the targeted typechecking will always terminate (if my
reasoning isn't sound, please say so).
The test provided with this commit demonstrates the new behavior (the position
used to execute the test is resolved to the `foo` method's call). In fact,
before this commit, executing the test returned the following:
(x: Int, y: String)Unit <and> (x: String)Unit <and> (x: Int)Unit
Showing that the tree's type is an overloaded type. The ambiguity is fixed by
this commit, and in fact the test's output is now:
(x: Int)Unit
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Backport of
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Updates localeContext() to return the best context possible when there are none directly
associated with the given position. It happens when an expression cannot be
successfully typed, as no precise ContextTree covers the expression location, or if the
position is not inside any expression.
Adds corresponding tests
(cherry picked from commit 3028327e2a2b553b12ee45519413515c8aa0865f)
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(cherry picked from commit 3d55fe723f1af91f4d2db421f0e0965c583346dc)
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Adds a new marker /*_*/ to trigger scope completion test.
Original type completion test oracles update for the tweaked output
(cherry picked from commit 9c7c66ff7907e3ab814f0f4375eeaf6cdd230d5e)
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The tree created during expansion of default arguments contained trees with the
wrong type of positions. Let's discuss this with an example. Below is the tree
generated for the `foo` method in the test class included in this commit.
Before this commit:
```
[54:94]def foo(): [58]Unit = <70:90>{
[70:79]<artifact> val qual$1: [70]Bar = [70:79][70:79][70:79]new [74:77]Bar();
[80]<artifact> val x$1: [80]Int = [80]qual$1.bar$default$1;
<70:90><70:83>qual$1.bar([80]x$1)
}
```
Now:
```
[54:99]def foo(): [58]Unit = <70:95>{
<70:84><artifact> val qual$1: [70]Bar = [70:84][70:84][70:84]new [74:77]Bar();
[85]<artifact> val x$1: [85]Int = [85]qual$1.bar$default$1;
<70:95>[84:88]qual$1.bar([85]x$1)
}
```
Here are the list of changes:
* The synthetic `qual$1` has a transparent position, instead of a range position.
* The new Select tree (i.e., `qual$1.bar`) should always have a range position,
because `selected` (i.e., the called method) is always visible in the source
(in fact, this is the whole point of the fix, we need a range position or
hyperlinking request from the Scala IDE won't work).
* The Block that contains the expanded default arguments is forced to have a
transparent position, as it never exist in the original source.
The tricky part of the fix is the position assigned to the new Select tree,
which needs to respect the range position's invariants. In the specific case,
we ought to make sure that range positions don't overlap. Therefore, the position
assigned to the new Select tree is computed by intersecting the original Select
position (i.e., `baseFun`'s position) and the original qualifier's position
(i.e., `qual`'s position).
If you take a closer look at the range positions assigned in the tree after this
commit, you'll notice that the range position of the `qual$1`'s rhs (i.e.,
[70:84]), and `qual$1.bar` (i.e., [84:88]) might seem to overlap, because the
former ends where the latter begins. However, this not the case because of the
range position's invariant 2, which states:
> Invariant 2: in a range position, start <= point < end
Hence, the above two positions aren't overlapping as far as the compiler is
concerned.
One additional aspect (that may look like a detail) is that we make sure to
never generate a position such that its start is after its end. This is why we
take the position with the smallest end point.
Furthermore, calling `withStart` would turn any position in a range position,
which isn't desiderable in general (and, even worse, this can lead to
generation of invalid positions - bad offsets - if the computation is performed
on offset positions). Hence, the position's computation is only performed when
both `baseFun` and `qual` positions are range positions. Indeed, I expect this to
be always the case if the compiler is started with -Yrangepos.
(cherry picked from commit 3009a525b58a4c7865ff524899b85518884ee5f7)
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SI-7280 Scope completion not returning members provided by imports
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Updates localeContext() to return the best context possible when there are none directly
associated with the given position. It happens when an expression cannot be
successfully typed, as no precise ContextTree covers the expression location, or if the
position is not inside any expression.
Adds corresponding tests
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Adds a new marker /*_*/ to trigger scope completion test.
Original type completion test oracles update for the tweaked output
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SI-7915 Corrected range positions created during default args expansion
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The tree created during expansion of default arguments contained trees with the
wrong type of positions. Let's discuss this with an example. Below is the tree
generated for the `foo` method in the test class included in this commit.
Before this commit:
```
[54:94]def foo(): [58]Unit = <70:90>{
[70:79]<artifact> val qual$1: [70]Bar = [70:79][70:79][70:79]new [74:77]Bar();
[80]<artifact> val x$1: [80]Int = [80]qual$1.bar$default$1;
<70:90><70:83>qual$1.bar([80]x$1)
}
```
Now:
```
[54:99]def foo(): [58]Unit = <70:95>{
<70:84><artifact> val qual$1: [70]Bar = [70:84][70:84][70:84]new [74:77]Bar();
[85]<artifact> val x$1: [85]Int = [85]qual$1.bar$default$1;
<70:95>[84:88]qual$1.bar([85]x$1)
}
```
Here are the list of changes:
* The synthetic `qual$1` has a transparent position, instead of a range position.
* The new Select tree (i.e., `qual$1.bar`) should always have a range position,
because `selected` (i.e., the called method) is always visible in the source
(in fact, this is the whole point of the fix, we need a range position or
hyperlinking request from the Scala IDE won't work).
* The Block that contains the expanded default arguments is forced to have a
transparent position, as it never exist in the original source.
The tricky part of the fix is the position assigned to the new Select tree,
which needs to respect the range position's invariants. In the specific case,
we ought to make sure that range positions don't overlap. Therefore, the position
assigned to the new Select tree is computed by intersecting the original Select
position (i.e., `baseFun`'s position) and the original qualifier's position
(i.e., `qual`'s position).
If you take a closer look at the range positions assigned in the tree after this
commit, you'll notice that the range position of the `qual$1`'s rhs (i.e.,
[70:84]), and `qual$1.bar` (i.e., [84:88]) might seem to overlap, because the
former ends where the latter begins. However, this not the case because of the
range position's invariant 2, which states:
> Invariant 2: in a range position, start <= point < end
Hence, the above two positions aren't overlapping as far as the compiler is
concerned.
One additional aspect (that may look like a detail) is that we make sure to
never generate a position such that its start is after its end. This is why we
take the position with the smallest end point.
Furthermore, calling `withStart` would turn any position in a range position,
which isn't desiderable in general (and, even worse, this can lead to
generation of invalid positions - bad offsets - if the computation is performed
on offset positions). Hence, the position's computation is only performed when
both `baseFun` and `qual` positions are range positions. Indeed, I expect this to
be always the case if the compiler is started with -Yrangepos.
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Conflicts:
src/interactive/scala/tools/nsc/interactive/Global.scala
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`List(1, 2, 3).map(f).<ctrl-space>` now works; before
the tree had the type `(bf: CanBuildFrom[...]):...` and
did not contribute completions from the result type.
This commit checks if the tree has an implicit method
type, and typechecks it as a qualifier. That is enough
to get to `adaptToImplicitMethod` in the type checker,
infer the implicit arguments, and compute the final result
type accordingly.
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Modularize scaladoc... almost
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Actual modularization is delayed until 2.12.
The one big (one-line) change is to make the interactive compiler independent
of scaladoc. We have one "integration test": `MemoryLeaksTest`.
This commit adds a bunch of comments marked `TODO: modularize the compiler`,
that should be uncommented when we're ready to continue the modularization
effort.
I decided to merge them commented out to avoid having to rebase xml patches.
There's still some chance of bitrot, but I'm willing to take my chances.
I previously refactored the build to make it easier to add jars in a coherent
way, which hinges on the `init-project-prop` mechanism, so the relevant
properties are already injected there.
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So that they aren't offered as an autocomplete suggestion:
implicit class Shouty(string: String) extends AnyVal {
def SHOUT_! = string.toUpperCase + "!"
}
"". // autocompletion offers `.string` here
The original incarnation of value classes didn't allow this
sort of encapsulation, so we either invented goofy names like
`__thingToAdd` or just picked `x` or `self`. But SI-7859 has
delivered us the freedom to keep the accessor private.
Should we keep any of these accessors around in a deprecated
form?
The implicit classes in Predef were added in 2.11.0-M2
(c26a8db067e4f), so they are okay.
I think we can make reason that these APIs were both accidental
and unlikely to be interpreted as public, so we can break them
immediately.
scala> Left(1).x
res0: scala.util.Either[Int,Int] = Left(1)
scala> import concurrent.duration._
import concurrent.duration._
scala> 1.n
res1: Int = 1
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It we can only safely use vals in Definitions for top-level symbols.
Otherwise, when the IDE switches to loading the symbol from source,
we can hold on to a stale symbol, which in turn impedes implicit
materialization of TypeTags.
This commit moves (most) of the accessors for member symbols
into RunDefinitions, and changes calling code accordingly.
This is a win for presentation compiler correctness, and
might even shave of a few cycles.
In a few cases, I have had to leave a `def` to a member symbol
in Definitions so we can get to it from the SymbolTable cake,
which doesn't see RunDefinitions.
The macro FastTrack facility now correctly recreates the mapping
from Symbol to macro implementation each run, using a new facility
in perRunCaches to create a run-indexed cache.
The enclosed test recreates the situation reported in the ticket,
in which TypeTags.scala is loaded from source.
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(for f in $(find test -name '*.check' -o -name '*.flags'); do bare=$(echo $f | sed -E 's/\.\w+$//'); ([[ -f "$bare" ]] || [[ -d "$bare" ]] || [[ -f "$bare.scala" ]] || [[ -f "$bare.test" ]] || echo $f) done;) | xargs rm
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Francois is investigating the root cause as part of his
work on stabilizing Scaladoc preview in the IDE.
The test seems to only fail on the windows nightly build.
I suspect this is due to a slower or loaded machine.
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One last flurry with the broom before I leave you slobs to code
in your own filth. Eliminated all the trailing whitespace I
could manage, with special prejudice reserved for the test cases
which depended on the preservation of trailing whitespace.
Was reminded I cannot figure out how to eliminate the trailing
space on the "scala> " prompt in repl transcripts. At least
reduced the number of such empty prompts by trimming transcript
code on the way in.
Routed ConsoleReporter's "printMessage" through a trailing
whitespace stripping method which might help futureproof
against the future of whitespace diseases. Deleted the up-to-40
lines of trailing whitespace found in various library files.
It seems like only yesterday we performed whitespace surgery
on the whole repo. Clearly it doesn't stick very well. I suggest
it would work better to enforce a few requirements on the way in.
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Without it, the enclosed test fails with:
ArrayBuffer(Problem(RangePosition(partial-fun/src/PartialFun.scala, 62, 62, 77),type mismatch;
found : Int => Int
required: PartialFunction[Int,Int],2))
And with that, we can remove this option altogether.
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ClassfileParser depends on forcing infos during typer phase.
It's not entirely clear why this is needed (git blame doesn't
help much) but I decided to preserve the logic.
Therefore, I introduced an abstract method called
`lookupMemberAtTyperPhaseIfPossible` which preserves the original
semantics but is implemented outside of ClassfileParser so the
ClassfileParser itself doesn't need to depend on typer phase and
phase mutation utilities.
I removed `loaders` override in `test/files/presentation/doc`.
I would have to update it to implement the
`lookupMemberAtTyperPhaseIfPossible` method. However, the override
doesn't seem to be doing anything useful so I just removed it.
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Some scalac output is on stderr, and it's useful to see that
in the log file, especially for debugging.
Adds a line filter for logs, specified as "filter: pattern"
in the test source.
Backslashes are made forward only when detected as paths.
Test alignments:
Deprecations which do not pertain to the system under test
are corrected in the obvious way.
When testing deprecated API, suppress warnings by deprecating
the Test object.
Check files are updated with useful true warnings, instead of
running under -nowarn.
Language feature imports as required, instead of running under -language.
Language feature not required, such as casual use of postfix.
Heed useful warning.
Ignore broken warnings. (Rarely, -nowarn.)
Inliner warnings pop up under -optimise only, so for now, just
filter them out where they occur.
Debug output from the test required an update.
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The nondeterminism presently showing itself in
presentation/implicit-member is a consequence of the
presentation compiler tests relying on details of the
behavior of toString calls. We need to stomp this out,
but it will take a while. Based on the check file
changes enclosed with this commit, this will suffice
for the presentation compiler tests. A broader assault
will have to take place, but not yet.
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This is a cleanup of scaladoc code.
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It fixes the following inefficiences or code style violations:
- Explicit asInstanceOf calls.
- Boxing symbols instead of using plain NoSymbol.
- Matching `this` instead of late-binding.
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I resisted the urge to fix "aksTypeCompletion" for as long
as I possibly could. While I was there I threw in what seem
to be like significant output improvements, but you tell me.
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Code by retronym, test by huitseeker, I just move stuff around.
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I started out looking to limit the noise from empty type
bounds, i.e. the endless repetition of
class A[T >: _root_.scala.Nothing <: _root_.scala.Any]
This led me to be reminded of all the unnecessary and
in fact damaging overreaches which are performed during parsing.
Why should a type parameter for which no bounds are
specified be immediately encoded with this giant tree:
TypeBounds(
Select(Select(Ident(nme.ROOTPKG), tpnme.scala_), tpnme.Nothing),
Select(Select(Ident(nme.ROOTPKG), tpnme.scala_), tpnme.Any)
)
...which must then be manually recognized as empty type bounds?
Truly, this is madness.
- It deftly eliminates the possibility of recognizing
whether the user wrote "class A[T]" or "class A[T >: Nothing]"
or "class A[T <: Any]" or specified both bounds. The fact
that these work out the same internally does not imply the
information should be exterminated even before parsing completes.
- It burdens everyone who must recognize type bounds trees,
such as this author
- It is far less efficient than the obvious encoding
- It offers literally no advantage whatsoever
Encode empty type bounds as
TypeBounds(EmptyTree, EmptyTree)
What could be simpler.
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Currently the exceptions that happen in the test are swallowed, as
the JVM is forced to exit before printing the stack trace.
Also assert message doesn't contain information about the problem.
The call to "sys.exit" masks bugs in the testing framework, that
has to be addressed more elaborately, so here we remove it. Also
add the message parameter to assert to make it more informative.
After removing "sys.exit" call, doc test starts failing. I suspect
there might be a problem when expanding doc variables, but this
should be addressed separately.
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Conflicts:
src/compiler/scala/tools/nsc/typechecker/Typers.scala
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Don't focus positions assigned to the TypeTree of a parent of a Template
when the parent exists in the source. A focused position (instance
of `OffsetPosition`) makes it invisible to the presentation compiler
when it looks for the innermost enclosing tree of a given position
(breaking hyperlinking, for example).
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This is the commit which brings it all together. The booleans
forInteractive and forScaladoc are now deprecated and are not
inspected for any purpose. All behavioral changes formerly
accomplished via tests of those flags are embodied in the globals
built specifically for those tasks.
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This leverages the preceding several commits to push scaladoc
specific code into src/scaladoc. It also renders some scanner
code more comprehensible.
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Resurrect some undead code from 373ded2ad3 (tuple2Pickler).
Conflicts:
src/compiler/scala/tools/nsc/interactive/CompilerControl.scala
src/compiler/scala/tools/nsc/typechecker/Typers.scala
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for given fragments. Don't type-check when forcing doc comments, but rather
do it directly. Test the new functionality as well as better tests for
the old one.
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Conflicts:
build.number
src/compiler/scala/tools/nsc/doc/base/MemberLookupBase.scala
src/compiler/scala/tools/nsc/typechecker/Macros.scala
test/files/presentation/doc/doc.scala
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SI-7134: don't require doc.Settings in base api of scaladoc.
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1) Deprecates much of Predef and scala.Console, especially:
- the read* methods (see below)
- the set{Out,Err,In} methods (see SI-4793)
2) Removed long-deprecated:
- Predef#exit
- Predef#error should have gone, but could not due to sbt
At least the whole source base has now been future-proofed
against the eventual removal of Predef#error.
The low justification for the read* methods should be readily
apparent: they are little used and have no call to be in global
namespace, especially given their weird ad hoc semantics and
unreasonably tempting names such as readBoolean().
3) Segregated the deprecated elements in Predef from the part
which still thrives.
4) Converted all the standard Predef implicits into implicit
classes, value classes where possible:
- ArrowAssoc, Ensuring, StringFormat, StringAdd, RichException (value)
- SeqCharSequence, ArrayCharSequence (non-value)
Non-implicit deprecated stubs prop up the names of the
formerly converting methods.
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* origin/2.10.x:
Fix for paramaccessor alias regression.
Expanded bytecode testing code.
SI-5675 Discard duplicate feature warnings at a position
accommodates pull request feedback
term and type reftrees are now reified uniformly
SI-6591 Reify and path-dependent types
SI-7096 SubstSymMap copies trees before modifying their symbols
SI-6961 no structural sharing in list serialization
SI-6187 Make partial functions re-typable
[backport] SI-6478 Fixing JavaTokenParser ident
SI-7100 Fixed infinite recursion in duplicators
SI-6146 More accurate prefixes for sealed subtypes.
SI-5082 Cycle avoidance between case companions
SI-6113 typeOf now works for type lambdas
SI-5824 Fix crashes in reify with _*
SI-7026: parseTree should never return a typed one
SI-7070 Turn restriction on companions in pkg objs into warning
Conflicts:
src/compiler/scala/reflect/reify/codegen/GenSymbols.scala
src/compiler/scala/tools/nsc/typechecker/PatternMatching.scala
src/compiler/scala/tools/nsc/typechecker/Typers.scala
src/compiler/scala/tools/reflect/ToolBoxFactory.scala
src/library/scala/collection/immutable/List.scala
src/reflect/scala/reflect/internal/TreeInfo.scala
src/reflect/scala/reflect/internal/Types.scala
src/reflect/scala/reflect/internal/settings/MutableSettings.scala
src/reflect/scala/reflect/runtime/Settings.scala
test/files/buildmanager/t2650_1/t2650_1.check
test/files/buildmanager/t2657/t2657.check
test/files/neg/t3234.check
test/files/run/idempotency-this.check
test/files/run/macro-typecheck-macrosdisabled2.check
test/files/run/showraw_tree.check
test/files/run/showraw_tree_ids.check
test/files/run/showraw_tree_kinds.check
test/files/run/showraw_tree_types_ids.check
test/files/run/showraw_tree_types_typed.check
test/files/run/showraw_tree_types_untyped.check
test/files/run/showraw_tree_ultimate.check
test/files/run/t2886.check
test/files/run/t5225_2.check
test/files/run/t5374.check
test/files/run/t5374.scala
test/files/run/t6329_repl.check
test/files/run/toolbox_typecheck_macrosdisabled2.check
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SI-7026 Asking for a parse tree will now never result in a typed tree
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This commit fixes ticket SI-7026. This makes it safe to use
parseTree outside of the presentation compiler thread.
Solved it with an implementation that just parses the source every
time without trying to memorize anything. Added tests that checks
that
1. You get a new parse tree every time you ask for one.
2. You always get a parse tree, never a typed tree.
3. A parse tree should never contain any symbols or types [1].
4. If you ask for a parse tree and then ask for a typed tree it
shouldn't change the parse tree you originally asked for, i.e.
property 3 still holds.
Additionally the parser is now only interruptible when running
on the presentation compiler thread.
[1] There is an exception to this though. Some of the nodes that
the compiler generates will actually contain symbols. I've
chosen to just ignore these special cases for now.
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* commit 'f784fbfbce':
Add a request to presentation compiler to fetch doc comment information.
Refactor scaladoc base functionality to allow it to be mixed in with Global in the IDE.
Conflicts:
src/compiler/scala/tools/nsc/interactive/Doc.scala
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