trait MatchCodeGen extends Interface
Factory methods used by TreeMakers to make the actual trees.
We have two modes in which to emit trees: optimized (the default) and pure (aka "virtualized": match is parametric in its monad).
- Source
- MatchCodeGen.scala
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Type Members
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trait
MatchMonadInterface extends AnyRef
Interface with user-defined match monad? if there's a
__matchin scope, we use this as the match strategy, assuming it conforms to MatchStrategy as defined below:Interface with user-defined match monad? if there's a
__matchin scope, we use this as the match strategy, assuming it conforms to MatchStrategy as defined below:type Matcher[P[_], M[+_], A] = { def flatMap[B](f: P[A] => M[B]): M[B] def orElse[B >: A](alternative: => M[B]): M[B] } abstract class MatchStrategy[P[_], M[+_]] { // runs the matcher on the given input def runOrElse[T, U](in: P[T])(matcher: P[T] => M[U]): P[U] def zero: M[Nothing] def one[T](x: P[T]): M[T] def guard[T](cond: P[Boolean], then: => P[T]): M[T] }
P and M are derived from one's signature (
def one[T](x: P[T]): M[T])if no
__matchis found, we assume the following implementation (and generate optimized code accordingly)object __match extends MatchStrategy[({type Id[x] = x})#Id, Option] { def zero = None def one[T](x: T) = Some(x) // NOTE: guard's return type must be of the shape M[T], where M is the monad in which the pattern match should be interpreted def guard[T](cond: Boolean, then: => T): Option[T] = if(cond) Some(then) else None def runOrElse[T, U](x: T)(f: T => Option[U]): U = f(x) getOrElse (throw new MatchError(x)) }
- Definition Classes
- Interface
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trait
TypedSubstitution extends MatchMonadInterface
- Definition Classes
- Interface
- trait CodegenCore extends MatchMonadInterface
- trait OptimizedCodegen extends CodegenCore with TypedSubstitution with MatchMonadInterface
- trait PureCodegen extends CodegenCore with PureMatchMonadInterface
- trait PureMatchMonadInterface extends MatchMonadInterface
Concrete Value Members
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object
CODE
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- TreeDSL
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object
vpmName
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final
def
!=(arg0: Any): Boolean
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final
def
##(): Int
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def
+(other: String): String
- Implicit
- This member is added by an implicit conversion from MatchCodeGen to any2stringadd[MatchCodeGen] performed by method any2stringadd in scala.Predef.
- Definition Classes
- any2stringadd
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def
->[B](y: B): (MatchCodeGen, B)
- Implicit
- This member is added by an implicit conversion from MatchCodeGen to ArrowAssoc[MatchCodeGen] performed by method ArrowAssoc in scala.Predef.
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- ArrowAssoc
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- @inline()
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final
def
==(arg0: Any): Boolean
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final
def
asInstanceOf[T0]: T0
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def
clone(): AnyRef
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final
def
dealiasWiden(tp: Global.Type): Global.Type
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def
ensuring(cond: (MatchCodeGen) ⇒ Boolean, msg: ⇒ Any): MatchCodeGen
- Implicit
- This member is added by an implicit conversion from MatchCodeGen to Ensuring[MatchCodeGen] performed by method Ensuring in scala.Predef.
- Definition Classes
- Ensuring
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def
ensuring(cond: (MatchCodeGen) ⇒ Boolean): MatchCodeGen
- Implicit
- This member is added by an implicit conversion from MatchCodeGen to Ensuring[MatchCodeGen] performed by method Ensuring in scala.Predef.
- Definition Classes
- Ensuring
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def
ensuring(cond: Boolean, msg: ⇒ Any): MatchCodeGen
- Implicit
- This member is added by an implicit conversion from MatchCodeGen to Ensuring[MatchCodeGen] performed by method Ensuring in scala.Predef.
- Definition Classes
- Ensuring
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def
ensuring(cond: Boolean): MatchCodeGen
- Implicit
- This member is added by an implicit conversion from MatchCodeGen to Ensuring[MatchCodeGen] performed by method Ensuring in scala.Predef.
- Definition Classes
- Ensuring
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final
def
eq(arg0: AnyRef): Boolean
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def
equals(arg0: Any): Boolean
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def
finalize(): Unit
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final
def
getClass(): Class[_]
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final
def
hasStableSymbol(p: Global.Tree): Boolean
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def
hashCode(): Int
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final
def
isInstanceOf[T0]: Boolean
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final
def
mkFALSE: Global.Literal
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final
def
mkTRUE: Global.Literal
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final
def
ne(arg0: AnyRef): Boolean
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final
def
notify(): Unit
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final
def
notifyAll(): Unit
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final
def
synchronized[T0](arg0: ⇒ T0): T0
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def
toString(): String
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final
def
wait(): Unit
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final
def
wait(arg0: Long, arg1: Int): Unit
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final
def
wait(arg0: Long): Unit
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def
→[B](y: B): (MatchCodeGen, B)
- Implicit
- This member is added by an implicit conversion from MatchCodeGen to ArrowAssoc[MatchCodeGen] performed by method ArrowAssoc in scala.Predef.
- Definition Classes
- ArrowAssoc
Deprecated Value Members
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def
formatted(fmtstr: String): String
- Implicit
- This member is added by an implicit conversion from MatchCodeGen to StringFormat[MatchCodeGen] performed by method StringFormat in scala.Predef.
- Definition Classes
- StringFormat
- Annotations
- @deprecated @inline()
- Deprecated
(Since version 2.12.16) Use
formatString.format(value)instead ofvalue.formatted(formatString), or use thef""string interpolator. In Java 15 and later,formattedresolves to the new method in String which has reversed parameters.
The Scala compiler and reflection APIs.