scala.quoted

package scala.quoted

Type members

Classlikes

abstract
class Expr[+T]

Quoted expression of type T.

Quoted expression of type T.

Expr has extension methods that are defined in scala.quoted.Quotes.

Companion
object
Source
Expr.scala
object Expr

Constructors for expressions

Constructors for expressions

Companion
class
Source
Expr.scala
object Exprs
trait FromExpr[T]

A type class for types that can convert a quoted.Expr[T] to a T.

A type class for types that can convert a quoted.Expr[T] to a T.

- Converts expression containing literal values to their values:

  • '{1} -> 1, '{2} -> 2, ...

  • For all primitive types and String - Converts an expression that constructs a copy of its value.

  • This expression must be some kind of data structure (Some, List, Either, ...)

  • Calls to new X or X.apply can be lifted into its value

  • Arguments of constructors can be recursively unlifted

Companion
object
Source
FromExpr.scala
object FromExpr

Default given instances of FromExpr

Default given instances of FromExpr

Companion
class
Source
FromExpr.scala
trait Quotes

Quotation context provided by a macro expansion or in the scope of scala.quoted.staging.run.

Quotation context provided by a macro expansion or in the scope of scala.quoted.staging.run. Used to perform all operations on quoted Expr or Type.

It contains the low-level Typed AST API metaprogramming API. This API does not have the static type guarantees that Expr and Type provide.

Source
Quotes.scala
trait ToExpr[T]

A type class for types that can convert a value of T into quoted.Expr[T] an expression that will create a copy of the value.

A type class for types that can convert a value of T into quoted.Expr[T] an expression that will create a copy of the value.

Companion
object
Source
ToExpr.scala
object ToExpr

Default given instances of ToExpr

Default given instances of ToExpr

Companion
class
Source
ToExpr.scala
abstract
class Type[T <: AnyKind]

Type (or type constructor) T needed contextually when using T in a quoted expression '{... T ...}

Type (or type constructor) T needed contextually when using T in a quoted expression '{... T ...}

Companion
object
Source
Type.scala
object Type

Methods to interact with the current Type[T] in scope

Methods to interact with the current Type[T] in scope

Companion
class
Source
Type.scala
object Varargs

Expression representation of literal sequence of expressions.

Expression representation of literal sequence of expressions.

Varargs can be used to create the an expression args that will be used as varargs '{ f($args: _*) } or it can be used to extract all the arguments of the a varargs.

Source
Varargs.scala

Value members

Concrete methods

transparent inline
def quotes(using inline q: Quotes): q

Current Quotes in scope

Current Quotes in scope

Usage:

def myExpr[T](using Quotes): Expr[T] = {
   import quotes.reflect._
   ...
}
Source
Quotes.scala