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bef4011947
Previously because extractClassInstance didn't use the declaration stack, we wouldn't notice that it was legal to refer to its type variable in the context of extracting a specialised method <-> method source-decl edge. This led to erasing the types of the source-decl, so that e.g. Map.put(...) would have signature (Object, Object) not (K, V) as it should.
20 lines
622 B
Plaintext
20 lines
622 B
Plaintext
import java
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class InstantiatedType extends ParameterizedType {
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InstantiatedType() { typeArgs(_, _, this) }
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}
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// This checks that all type parameter references are erased in the context of a $default function.
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predicate containsTypeVariables(Type t) {
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t instanceof TypeVariable or
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containsTypeVariables(t.(InstantiatedType).getATypeArgument()) or
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containsTypeVariables(t.(NestedType).getEnclosingType()) or
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containsTypeVariables(t.(Wildcard).getATypeBound().getType())
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}
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from Expr e
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where
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e.getEnclosingCallable().getName().matches("%$default") and
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containsTypeVariables(e.getType())
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select e, e.getType()
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