CODEWITHSUNDEEP
scalareflectionscala-macroscase-classscala-2.11
eouw0o83hf
eouw0o83hf

Reputation: 9598

Detect case class in scala macro

Within a method being called as a scala (2.11) macro, is there a way to programmatically determine whether a Type is a case class or not?

The API for the method I'm working through boils down to this:

def typeIsCaseClass(c: Context)(targetType: c.universe.Type): Boolean = {
  // targetType "is case class?"
}

I'm open to altering the API if need be.

Upvotes: 3

Views: 220

Answers (1)

Jasper-M
Jasper-M

Reputation: 15086

The symbols usually contain all the interesting information:

def typeIsCaseClass(c: Context)(targetType: c.universe.Type): Boolean = {
  val sym = targetType.typeSymbol
  sym.isClass && sym.asClass.isCaseClass
}

Upvotes: 5

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