Trait scala.reflect.api.Trees.TreeApi
trait TreeApi extends Product
Abstract Value Members
abstract def canEqual(that: Any): Boolean
- Definition Classes
- Equals
abstract def canHaveAttrs: Boolean
Can this tree carry attributes (i.e. symbols, types or positions)? Typically the answer is yes, except for the EmptyTree null object and two special singletons: noSelfType and pendingSuperCall.
abstract def children: List[Universe.Tree]
The direct child trees of this tree. EmptyTrees are always omitted. Lists are flattened.
abstract def collect[T](pf: PartialFunction[Universe.Tree, T]): List[T]
abstract def duplicate: TreeApi.this.type
abstract def equalsStructure(that: Universe.Tree): Boolean
Tests whether two trees are structurally equal. Note that == on trees is reference equality.
abstract def exists(p: (Universe.Tree) ⇒ Boolean): Boolean
abstract def filter(f: (Universe.Tree) ⇒ Boolean): List[Universe.Tree]
Find all subtrees matching predicate p. Same as withFilter
abstract def find(p: (Universe.Tree) ⇒ Boolean): Option[Universe.Tree]
abstract def forAll(p: (Universe.Tree) ⇒ Boolean): Boolean
abstract def foreach(f: (Universe.Tree) ⇒ Unit): Unit
abstract def isDef: Boolean
abstract def isEmpty: Boolean
Is this tree one of the empty trees?
Empty trees are: the EmptyTree null object and TypeTree instances that don't carry a type.
- See also
canHaveAttrs
abstract def isTerm: Boolean
abstract def isType: Boolean
abstract def nonEmpty: Boolean
Is this tree not an empty tree?
- See also
isEmpty
abstract def orElse(alt: ⇒ Universe.Tree): Universe.Tree
Provides an alternate if tree is empty
- alt
The alternate tree
- returns
If this tree is non empty, this tree, otherwise
alt.
abstract def pos: Universe.Position
abstract def productArity: Int
- Definition Classes
- Product
abstract def productElement(n: Int): Any
- Definition Classes
- Product
abstract def symbol: Universe.Symbol
Symbol of the tree.
For most trees symbol is null. In SymTrees, it is overridden and implemented with a var, initialized to NoSymbol.
Trees which are not SymTrees but which carry symbols do so by overriding def symbol to forward it elsewhere. Examples:
Super(qual, _) has qual's symbol,
Apply(fun, args) has fun's symbol,
TypeApply(fun, args) has fun's symbol,
AppliedTypeTree(tpt, args) has tpt's symbol,
TypeTree(tpe) has tpe's typeSymbol, if tpe != null. abstract def tpe: Universe.Type
Type of the tree.
Upon creation most trees have their tpe set to null. Types are typically assigned to trees during typechecking. Some node factory methods set tpe immediately after creation.
When the typechecker encounters a tree with a non-null tpe, it will assume it to be correct and not check it again. This means one has to be careful not to erase the tpe field of subtrees.
abstract def withFilter(f: (Universe.Tree) ⇒ Boolean): List[Universe.Tree]
Find all subtrees matching predicate p. Same as filter
Concrete Value Members
final def !=(arg0: Any): Boolean
- Definition Classes
- AnyRef → Any
final def ##(): Int
- Definition Classes
- AnyRef → Any
def +(other: String): String
- Implicit
- This member is added by an implicit conversion from Universe.TreeApi to any2stringadd[Universe.TreeApi] performed by method any2stringadd in scala.Predef.
- Definition Classes
- any2stringadd
def ->[B](y: B): (Universe.TreeApi, B)
- Implicit
- This member is added by an implicit conversion from Universe.TreeApi to ArrowAssoc[Universe.TreeApi] performed by method ArrowAssoc in scala.Predef.
- Definition Classes
- ArrowAssoc
- Annotations
- @inline()
final def ==(arg0: Any): Boolean
- Definition Classes
- AnyRef → Any
final def asInstanceOf[T0]: T0
- Definition Classes
- Any
def clone(): AnyRef
- Attributes
- protected[lang]
- Definition Classes
- AnyRef
- Annotations
- @throws( ... ) @native()
def ensuring(cond: (Universe.TreeApi) ⇒ Boolean, msg: ⇒ Any): Universe.TreeApi
- Implicit
- This member is added by an implicit conversion from Universe.TreeApi to Ensuring[Universe.TreeApi] performed by method Ensuring in scala.Predef.
- Definition Classes
- Ensuring
def ensuring(cond: (Universe.TreeApi) ⇒ Boolean): Universe.TreeApi
- Implicit
- This member is added by an implicit conversion from Universe.TreeApi to Ensuring[Universe.TreeApi] performed by method Ensuring in scala.Predef.
- Definition Classes
- Ensuring
def ensuring(cond: Boolean, msg: ⇒ Any): Universe.TreeApi
- Implicit
- This member is added by an implicit conversion from Universe.TreeApi to Ensuring[Universe.TreeApi] performed by method Ensuring in scala.Predef.
- Definition Classes
- Ensuring
def ensuring(cond: Boolean): Universe.TreeApi
- Implicit
- This member is added by an implicit conversion from Universe.TreeApi to Ensuring[Universe.TreeApi] performed by method Ensuring in scala.Predef.
- Definition Classes
- Ensuring
final def eq(arg0: AnyRef): Boolean
- Definition Classes
- AnyRef
def equals(arg0: Any): Boolean
- Definition Classes
- AnyRef → Any
def finalize(): Unit
- Attributes
- protected[lang]
- Definition Classes
- AnyRef
- Annotations
- @throws( classOf[java.lang.Throwable] )
def formatted(fmtstr: String): String
- Implicit
- This member is added by an implicit conversion from Universe.TreeApi to StringFormat[Universe.TreeApi] performed by method StringFormat in scala.Predef.
- Definition Classes
- StringFormat
- Annotations
- @inline()
final def getClass(): Class[_]
- Definition Classes
- AnyRef → Any
- Annotations
- @native()
def hashCode(): Int
- Definition Classes
- AnyRef → Any
- Annotations
- @native()
final def isInstanceOf[T0]: Boolean
- Definition Classes
- Any
final def ne(arg0: AnyRef): Boolean
- Definition Classes
- AnyRef
final def notify(): Unit
- Definition Classes
- AnyRef
- Annotations
- @native()
final def notifyAll(): Unit
- Definition Classes
- AnyRef
- Annotations
- @native()
def productIterator: Iterator[Any]
- Definition Classes
- Product
def productPrefix: String
- Definition Classes
- Product
final def synchronized[T0](arg0: ⇒ T0): T0
- Definition Classes
- AnyRef
def toString(): String
Obtains string representation of a tree
- Definition Classes
- TreeApi → AnyRef → Any
final def wait(): Unit
- Definition Classes
- AnyRef
- Annotations
- @throws( ... )
final def wait(arg0: Long, arg1: Int): Unit
- Definition Classes
- AnyRef
- Annotations
- @throws( ... )
final def wait(arg0: Long): Unit
- Definition Classes
- AnyRef
- Annotations
- @throws( ... ) @native()
def →[B](y: B): (Universe.TreeApi, B)
- Implicit
- This member is added by an implicit conversion from Universe.TreeApi to ArrowAssoc[Universe.TreeApi] performed by method ArrowAssoc in scala.Predef.
- Definition Classes
- ArrowAssoc
© 2002-2019 EPFL, with contributions from Lightbend.
Licensed under the Apache License, Version 2.0.
https://www.scala-lang.org/api/2.12.9/scala-reflect/scala/reflect/api/Trees$TreeApi.html
The API that all trees support. The main source of information about trees is the scala.reflect.api.Trees page.