trait Helpers extends AnyRef
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- def +(other: String): String
- def ->[B](y: B): (Helpers, B)
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- def decreaseMetalevel(tp: tools.nsc.Global.Type): tools.nsc.Global.Type
Decreases metalevel of the type, i.e.
Decreases metalevel of the type, i.e. transforms: * c.Expr[T] to T * Nothing to Nothing * Anything else to NoType
- See also
Metalevels.scala for more information and examples about metalevels
- def ensuring(cond: (Helpers) => Boolean, msg: => Any): Helpers
- def ensuring(cond: (Helpers) => Boolean): Helpers
- def ensuring(cond: Boolean, msg: => Any): Helpers
- def ensuring(cond: Boolean): Helpers
- final def eq(arg0: AnyRef): Boolean
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- def hashCode(): Int
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- def increaseMetalevel(pre: tools.nsc.Global.Type, tp: tools.nsc.Global.Type): tools.nsc.Global.Type
Increases metalevel of the type, i.e.
Increases metalevel of the type, i.e. transforms: * T to c.Expr[T]
- See also
Metalevels.scala for more information and examples about metalevels
- final def isInstanceOf[T0]: Boolean
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- def toString(): String
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- def transformTypeTagEvidenceParams(macroImplRef: tools.nsc.Global.Tree, transform: (tools.nsc.Global.Symbol, tools.nsc.Global.Symbol) => tools.nsc.Global.Symbol): List[List[tools.nsc.Global.Symbol]]
Transforms parameters lists of a macro impl.
Transforms parameters lists of a macro impl. The
transformfunction is invoked only for WeakTypeTag evidence parameters.The transformer takes two arguments: a value parameter from the parameter list and a type parameter that is witnesses by the value parameter.
If the transformer returns a NoSymbol, the value parameter is not included from the result. If the transformer returns something else, this something else is included in the result instead of the value parameter.
Despite of being highly esoteric, this function significantly simplifies signature analysis. For example, it can be used to strip macroImpl.paramss from the evidences (necessary when checking def <-> impl correspondence) or to streamline creation of the list of macro arguments.
- def untypeMetalevel(tp: tools.nsc.Global.Type): tools.nsc.Global.Type
Transforms c.Expr[T] types into c.Tree and leaves the rest unchanged.
- final def wait(): Unit
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Deprecated Value Members
- def →[B](y: B): (Helpers, B)
- Implicit
- This member is added by an implicit conversion from Helpers toArrowAssoc[Helpers] performed by method ArrowAssoc in scala.Predef.
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(Since version 2.13.0) Use
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The Scala compiler and reflection APIs.