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| author | Dmitry Petrashko <dmitry.petrashko@gmail.com> | 2014-09-26 14:59:51 +0200 |
|---|---|---|
| committer | Dmitry Petrashko <dmitry.petrashko@gmail.com> | 2014-10-11 06:38:11 +0200 |
| commit | cc792576ff1174820d68d5e10c39f909dd5b39ec (patch) | |
| tree | 455a1f02b833d03027580e0ac863147922064cfa /src/dotty/tools/dotc/transform/PatternMatcher.scala | |
| parent | d936dec0c27d43dc861194594ecc22c4770450bd (diff) | |
| download | dotty-cc792576ff1174820d68d5e10c39f909dd5b39ec.tar.gz dotty-cc792576ff1174820d68d5e10c39f909dd5b39ec.tar.bz2 dotty-cc792576ff1174820d68d5e10c39f909dd5b39ec.zip | |
Make SubstOnlyTreeMaker maintain type-safety.
Implementation of pattern
sel match {
x => <body>
}
used to replace references to x by references to sel in <body>.
This is not type correct and it also requires additional traversal of
body.
Now SubstOnlyTreeMaker generates a `x = sel` statement.
Diffstat (limited to 'src/dotty/tools/dotc/transform/PatternMatcher.scala')
| -rw-r--r-- | src/dotty/tools/dotc/transform/PatternMatcher.scala | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/src/dotty/tools/dotc/transform/PatternMatcher.scala b/src/dotty/tools/dotc/transform/PatternMatcher.scala index 9fbf705b9..e7780a128 100644 --- a/src/dotty/tools/dotc/transform/PatternMatcher.scala +++ b/src/dotty/tools/dotc/transform/PatternMatcher.scala @@ -427,9 +427,9 @@ class PatternMatcher extends MiniPhaseTransform with DenotTransformer {thisTrans case class SubstOnlyTreeMaker(prevBinder: Symbol, nextBinder: Symbol) extends TreeMaker { val pos = Positions.NoPosition - val localSubstitution = Substitution(prevBinder, ref(nextBinder)) - def chainBefore(next: Tree)(casegen: Casegen): Tree = /*substitution(*/next//) - override def toString = "S" + localSubstitution + val localSubstitution = EmptySubstitution + def chainBefore(next: Tree)(casegen: Casegen): Tree = Block(List(ValDef(prevBinder.asTerm, ref(nextBinder))), next) + //override def toString = "S" + localSubstitution } sealed abstract class FunTreeMaker extends TreeMaker { |