Simplify Tasty Trees #4277
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Simplify Tasty Trees #4277
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The test case caused a crash in NamedType, because `Lambda` is higher-kinded. We now report an error instead.
Several changes mean that quite a bit of boilerplate can be removed. Also, some fixes.
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nicolasstucki
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tests/pos/TastyADT.scala
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| } | ||
| object NoSymbol extends Symbol | ||
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| trait Definition { |
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Should extend Statement
Avoid `Empty` and `Tpt`
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| case Block(stats: List[Statement], expr: Term) | ||
| case Inlined(call: Term, bindings: List[Definition], expr: Term) | ||
| case Lambda(method: Term, tpt: Term | Empty) | ||
| case Lambda(method: Term, tpt: Option[TypeTree]) |
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Actually, the doc is wrong. https://github.com/lampepfl/dotty/blob/master/compiler/src/dotty/tools/dotc/core/tasty/TreeUnpickler.scala#L1022-L1025
The docs should be updated to
LAMBDA Length meth_Term target_Type?
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| case class TypeBounds(loBound: Type, hiBound: Type) | ||
| case class NoPrefix() | ||
| object NoPrefix extends NoPrefix |
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Why both a class and an object for NoPrefix?
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To allow NoPrefix to be used in | types and be a singleton at the same time.
nicolasstucki
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Several simplifications and fixes for tasty trees.
Also: Avoid crash if prefix of selection is higher-kinded
The test case caused a crash in NamedType, because
Lambdais higher-kinded.We now report an error instead.