object patmat extends SubComponent with PatternMatching
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- patmat
- PatternMatching
- PatternExpansion
- MatchWarnings
- MatchOptimization
- MatchAnalysis
- MatchApproximation
- Solving
- ScalaLogic
- TreeAndTypeAnalysis
- Logic
- MatchCps
- MatchTreeMaking
- MatchCodeGen
- MatchTranslation
- Interface
- TreeDSL
- Debugging
- TypingTransformers
- Transform
- SubComponent
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Type Members
- abstract class StdPhase extends GlobalPhase
A standard phase template
A standard phase template
- Definition Classes
- SubComponent
- class Phase extends StdPhase
The phase defined by this transform
The phase defined by this transform
- Definition Classes
- Transform
- abstract class TypingTransformer extends Global.Transformer
- Definition Classes
- TypingTransformers
- 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
- trait TypedSubstitution extends MatchMonadInterface
- Definition Classes
- Interface
- trait PropositionalLogic extends AnyRef
- Definition Classes
- Logic
- trait MatchAnalyzer extends MatchApproximator
- Definition Classes
- MatchAnalysis
- trait MatchApproximator extends TreeMakers with TreesAndTypesDomain
Represent a match as a formula in propositional logic that encodes whether the match matches (abstractly: we only consider types)
Represent a match as a formula in propositional logic that encodes whether the match matches (abstractly: we only consider types)
- Definition Classes
- MatchApproximation
- trait CodegenCore extends MatchMonadInterface
- Definition Classes
- MatchCodeGen
- trait OptimizedCodegen extends CodegenCore with TypedSubstitution with MatchMonadInterface
- Definition Classes
- MatchCodeGen
- trait CommonSubconditionElimination extends OptimizedCodegen with MatchApproximator
- Definition Classes
- MatchOptimization
- trait MatchOptimizer extends OptimizedCodegen with SwitchEmission with CommonSubconditionElimination
- Definition Classes
- MatchOptimization
- trait SwitchEmission extends TreeMakers with MatchMonadInterface
- Definition Classes
- MatchOptimization
- trait MatchTranslator extends PatternMatching.TreeMakers with PatternMatching.TreeMakerWarnings
- Definition Classes
- MatchTranslation
- final case class Suppression(suppressExhaustive: Boolean, suppressUnreachable: Boolean) extends Product with Serializable
- Definition Classes
- MatchTreeMaking
- trait TreeMakers extends TypedSubstitution with CodegenCore
- Definition Classes
- MatchTreeMaking
- trait TreeMakerWarnings extends AnyRef
- Definition Classes
- MatchWarnings
- class ExtractorAlignment extends ExtractorSubPatternAlignment
- Definition Classes
- PatternExpansion
- trait ExtractorSubPatternAlignment extends AnyRef
The arities we can derive looking only at the subpatterns (the args of the unapply node)
The arities we can derive looking only at the subpatterns (the args of the unapply node)
- Definition Classes
- PatternExpansion
- class MatchTransformer extends TypingTransformer
- Definition Classes
- PatternMatching
- class OptimizingMatchTranslator extends MatchTranslator with MatchOptimizer with MatchAnalyzer with Solver
- Definition Classes
- PatternMatching
- trait TreesAndTypesDomain extends PropositionalLogic with CheckableTreeAndTypeAnalysis
- Definition Classes
- ScalaLogic
- trait CNF extends PropositionalLogic
- Definition Classes
- Solving
- trait Solver extends CNF
- Definition Classes
- Solving
- trait CheckableTreeAndTypeAnalysis extends AnyRef
- Definition Classes
- TreeAndTypeAnalysis
Value Members
- final def !=(arg0: Any): Boolean
- Definition Classes
- AnyRef → Any
- final def ##(): Int
- Definition Classes
- AnyRef → Any
- final def ==(arg0: Any): Boolean
- Definition Classes
- AnyRef → Any
- final def afterOwnPhase[T](op: => T): T
- Definition Classes
- SubComponent
- Annotations
- @inline()
- def alignAcrossRows(xss: List[List[Any]], sep: String, lineSep: String = "\n"): String
- Definition Classes
- Logic
- final def asInstanceOf[T0]: T0
- Definition Classes
- Any
- final def beforeOwnPhase[T](op: => T): T
- Definition Classes
- SubComponent
- Annotations
- @inline()
- def binderTypeImpliedByPattern(pat: Global.Tree, pt: Global.Type, binder: Global.Symbol): Global.Type
Compute the type T implied for a value
vmatched by a patternpat(with expected typept).Compute the type T implied for a value
vmatched by a patternpat(with expected typept).Usually, this is the pattern's type because pattern matching implies instance-of checks.
However, Stable Identifier and Literal patterns are matched using
==, which does not imply a type for the binder that binds the matched value.See scala/bug#1503, scala/bug#5024: don't cast binders to types we're not sure they have
- Definition Classes
- TreeAndTypeAnalysis
- def clone(): AnyRef
- Attributes
- protected[lang]
- Definition Classes
- AnyRef
- Annotations
- @throws(classOf[java.lang.CloneNotSupportedException]) @native()
- final def dealiasWiden(tp: Global.Type): Global.Type
- Attributes
- protected
- Definition Classes
- Interface
- def enabled: Boolean
Is this component enabled? Default is true.
Is this component enabled? Default is true.
- Definition Classes
- SubComponent
- final def eq(arg0: AnyRef): Boolean
- Definition Classes
- AnyRef
- def equals(arg0: AnyRef): Boolean
- Definition Classes
- AnyRef → Any
- def equivalentTree(a: Global.Tree, b: Global.Tree): Boolean
- Definition Classes
- TreeAndTypeAnalysis
- def finalize(): Unit
- Attributes
- protected[lang]
- Definition Classes
- AnyRef
- Annotations
- @throws(classOf[java.lang.Throwable])
- final def getClass(): Class[_ <: AnyRef]
- Definition Classes
- AnyRef → Any
- Annotations
- @native()
- val global: Global.this.type
The global environment; overridden by instantiation in Global.
The global environment; overridden by instantiation in Global.
- Definition Classes
- patmat → PatternExpansion → TreeDSL → Debugging → TypingTransformers → SubComponent
- final def hasStableSymbol(p: Global.Tree): Boolean
- Attributes
- protected
- Definition Classes
- Interface
- def hashCode(): Int
SubComponent are added to a HashSet and two phases are the same if they have the same name
SubComponent are added to a HashSet and two phases are the same if they have the same name
- Definition Classes
- SubComponent → AnyRef → Any
- val initial: Boolean
True if this phase runs before all other phases.
True if this phase runs before all other phases. Usually,
parser.- Definition Classes
- SubComponent
- def instanceOfTpImplies(tp: Global.Type, tpImplied: Global.Type): Boolean
- Definition Classes
- TreeAndTypeAnalysis
- val internal: Boolean
True if this phase is not provided by a plug-in.
True if this phase is not provided by a plug-in.
- Definition Classes
- SubComponent
- final def isInstanceOf[T0]: Boolean
- Definition Classes
- Any
- final def mkFALSE: Global.Literal
- Attributes
- protected
- Definition Classes
- Interface
- final def mkTRUE: Global.Literal
- Attributes
- protected
- Definition Classes
- Interface
- final def ne(arg0: AnyRef): Boolean
- Definition Classes
- AnyRef
- def newPhase(prev: nsc.Phase): StdPhase
Create a new phase which applies transformer
Create a new phase which applies transformer
- Definition Classes
- Transform → SubComponent
- def newTransformer(unit: Global.CompilationUnit): Global.Transformer
The transformer factory
The transformer factory
- Definition Classes
- PatternMatching → Transform
- final def notify(): Unit
- Definition Classes
- AnyRef
- Annotations
- @native()
- final def notifyAll(): Unit
- Definition Classes
- AnyRef
- Annotations
- @native()
- def ownPhase: nsc.Phase
The phase corresponding to this subcomponent in the current compiler run
The phase corresponding to this subcomponent in the current compiler run
- Definition Classes
- SubComponent
- val phaseName: String
The name of the phase
The name of the phase
- Definition Classes
- PatternMatching → SubComponent
- def phaseNewFlags: Long
New flags defined by the phase which are not valid before
New flags defined by the phase which are not valid before
- Definition Classes
- SubComponent
- def phaseNextFlags: Long
New flags defined by the phase which are not valid until immediately after it
New flags defined by the phase which are not valid until immediately after it
- Definition Classes
- SubComponent
- def removeCPSFromPt(pt: Global.Type): Global.Type
- Definition Classes
- MatchCps
- val requires: List[String]
Names of phases required by this component.
Names of phases required by this component. Default is
Nil.- Definition Classes
- SubComponent
- val runsAfter: collection.immutable.List[String]
Names of phases that must run before this phase.
Names of phases that must run before this phase.
- Definition Classes
- patmat → SubComponent
- val runsBefore: List[String]
Names of phases that must run after this phase.
Names of phases that must run after this phase. Default is
Nil.- Definition Classes
- SubComponent
- val runsRightAfter: None.type
Name of the phase that this phase must follow immediately.
Name of the phase that this phase must follow immediately.
- Definition Classes
- patmat → SubComponent
- final def synchronized[T0](arg0: => T0): T0
- Definition Classes
- AnyRef
- val terminal: Boolean
True if this phase runs after all other phases.
True if this phase runs after all other phases. Usually,
terminal.- Definition Classes
- SubComponent
- def toString(): String
- Definition Classes
- AnyRef → Any
- def unapplyFormals(fun: Global.Tree, args: List[Global.Tree])(context: Context): List[Global.Type]
- Definition Classes
- PatternExpansion
- final def wait(): Unit
- Definition Classes
- AnyRef
- Annotations
- @throws(classOf[java.lang.InterruptedException])
- final def wait(arg0: Long, arg1: Int): Unit
- Definition Classes
- AnyRef
- Annotations
- @throws(classOf[java.lang.InterruptedException])
- final def wait(arg0: Long): Unit
- Definition Classes
- AnyRef
- Annotations
- @throws(classOf[java.lang.InterruptedException]) @native()
- object CODE
- Definition Classes
- TreeDSL
- object debug
- Definition Classes
- Debugging
- object vpmName
- Definition Classes
- Interface
- object Suppression extends java.io.Serializable
- Definition Classes
- MatchTreeMaking
The Scala compiler and reflection APIs.