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Everyone knows that a `help` command will result in `more information`.
This commit moves the version string to the second line and adds some
verve to the welcome.
If anyone can't live without the old banner, they are now able to
configure it explicitly, so there is still no blood on our hands.
```
$ scala
Welcome to Scala version 2.11.6 (Java HotSpot(TM) 64-Bit Server VM, Java 1.8.0_40).
Type in expressions to have them evaluated.
Type :help for more information.
scala> :quit
$ skala
Welcome to Scala!
version 2.11.7-20150623-155244-eab44dd092 (Java HotSpot(TM) 64-Bit Server VM, Java 1.8.0_40).
Type in expressions for evaluation. Or try :help.
scala> :quit
```
REPL tests now lop off the actual length of the welcome header; or, if
necessary, remove the version number from a header embedded in output.
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Closing the REPL with Ctrl+D does not issue a newline, so the user's
prompt displays on the same line as the `scala>` prompt. This is bad.
We now force a newline before closing the interpreter, and display
`:quit` while we're at it so that people know how to exit the REPL
(since `exit` doesn't exist anymore).
The tricky part was to only add a newline when the console is
interrupted, and *not* when it is closed by a command (like `:quit`),
since commands are processed after their text (including newline) has
been sent to the console.
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deprecates resetAllAttrs and resetLocalAttrs in favor of the new API
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We now have c.untypecheck, which is supposed to be a counterpart of c.typecheck
in the sense that it goes back from typed trees to untyped ones:
http://stackoverflow.com/questions/20936509/scala-macros-what-is-the-difference-between-typed-aka-typechecked-an-untyped.
Let’s hope that c.untypecheck will soon be able to solve our problems
with partially/incorrectly attributed trees emitted by macros:
https://groups.google.com/forum/#!topic/scala-internals/TtCTPlj_qcQ.
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Performs the following renamings:
* scala.reflect.macros.BlackboxContext to scala.reflect.macros.blackbox.Context
* scala.reflect.macros.BlackboxMacro to scala.reflect.macros.blackbox.Macro
* scala.reflect.macros.WhiteboxContext to scala.reflect.macros.whitebox.Context
* scala.reflect.macros.WhiteboxMacro to scala.reflect.macros.whitebox.Macro
https://groups.google.com/forum/#!topic/scala-internals/MX40-dM28rk
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This is the first commit in the series. This commit only:
1) Splits Context into BlackboxContext and WhiteboxContext
2) Splits Macro into BlackboxMacro and WhiteboxMacro
3) Introduces the isBundle property in the macro impl binding
Here we just teach the compiler that macros can now be blackbox and whitebox,
without actually imposing any restrictions on blackbox macros. These
restrictions will come in subsequent commits.
For description and documentation of the blackbox/whitebox separation
see the official macro guide at the scaladoc website:
http://docs.scala-lang.org/overviews/macros/blackbox-whitebox.html
Some infrastructure work to make evolving macros easier:
compile partest-extras with quick so they can use latest library/reflect/...
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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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- `New(tpe)` doesn't survive a `resetAttrs` / typecheck; use
a name instead.
- Abandon the tree attachment that passed the default
case from `typer` to `patmat`; this tree eluded the
attribute reset performed in the macro. Instead, add it
to the match. Apart from making the tree re-typable, it
also exposes the true code structure to macros, which
is important if they need to perform other code
transformations.
- Install original trees on the declared types of the
parameters of the `applyOrElse` method to ensure that
references to them within the method pick up the correct
type parameter skolems upon retypechecking.
- Propagate `TypeTree#original` through `copyAttrs`,
which is called during tree duplication / `TreeCopiers`.
Without this, the original trees that we installed were
not visible anymore during `ResetAttrs`.
We are not able to reify partial functions yet -- the
particular sticking point is reification of the parentage
which is only available in the `ClassInfoType`.
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