Alternatives of patterns.
The API that all alternatives support
An extractor class to create and pattern match with syntax Alternative(trees)
.
A tree that has an annotation attached to it.
The API that all annotateds support
An extractor class to create and pattern match with syntax Annotated(annot, arg)
.
Applied type <tpt> [ <args> ], eliminated by RefCheck
The API that all applied type trees support
An extractor class to create and pattern match with syntax AppliedTypeTree(tpt, args)
.
Value application
The API that all applies support
An extractor class to create and pattern match with syntax Apply(fun, args)
.
Assignment
The API that all assigns support
An extractor class to create and pattern match with syntax Assign(lhs, rhs)
.
Either an assignment or a named argument.
The API that all assigns support
An extractor class to create and pattern match with syntax AssignOrNamedArg(lhs, rhs)
.
Bind a variable to a rhs pattern.
The API that all binds support
An extractor class to create and pattern match with syntax Bind(name, body)
.
Block of expressions (semicolon separated expressions)
The API that all blocks support
An extractor class to create and pattern match with syntax Block(stats, expr)
.
Case clause in a pattern match.
The API that all case defs support
An extractor class to create and pattern match with syntax CaseDef(pat, guard, body)
.
A class definition.
The API that all class defs support
An extractor class to create and pattern match with syntax ClassDef(mods, name, tparams, impl)
.
Intersection type <parent1> with .
The API that all compound type trees support
An extractor class to create and pattern match with syntax CompoundTypeTree(templ)
.
A method or macro definition.
The API that all def defs support
An extractor class to create and pattern match with syntax DefDef(mods, name, tparams, vparamss, tpt, rhs)
.
A tree which defines a symbol-carrying entity.
The API that all def trees support
Existential type tree node
The API that all existential type trees support
An extractor class to create and pattern match with syntax ExistentialTypeTree(tpt, whereClauses)
.
Anonymous function, eliminated by compiler phase lambdalift
The API that all functions support
An extractor class to create and pattern match with syntax Function(vparams, body)
.
Common base class for Apply and TypeApply.
The API that all applies support
A reference to identifier name
.
The API that all idents support
An extractor class to create and pattern match with syntax Ident(qual, name)
.
Conditional expression
The API that all ifs support
An extractor class to create and pattern match with syntax If(cond, thenp, elsep)
.
A common base class for class and object definitions.
The API that all impl defs support
Import clause
The API that all imports support
An extractor class to create and pattern match with syntax Import(expr, selectors)
.
Import selector
The API that all import selectors support
An extractor class to create and pattern match with syntax ImportSelector(name:, namePos, rename, renamePos)
.
A labelled expression.
The API that all label defs support
An extractor class to create and pattern match with syntax LabelDef(name, params, rhs)
.
Literal
The API that all literals support
An extractor class to create and pattern match with syntax Literal(value)
.
- Pattern matching expression (before compiler phase explicitouter before 2.
The API that all matches support
An extractor class to create and pattern match with syntax Match(selector, cases)
.
Common base class for all member definitions: types, classes, objects, packages, vals and vars, defs.
The API that all member defs support
The type of tree modifiers.
The API that all Modifiers support
An extractor class to create and pattern match with syntax Modifiers(flags, privateWithin, annotations)
.
An object definition, e.
The API that all module defs support
An extractor class to create and pattern match with syntax ModuleDef(mods, name, impl)
.
A tree with a name - effectively, a DefTree or RefTree.
The API that all name trees support
Object instantiation
The API that all news support
An extractor class to create and pattern match with syntax New(tpt)
.
A packaging, such as package pid { stats }
The API that all package defs support
An extractor class to create and pattern match with syntax PackageDef(pid, stats)
.
A tree which references a symbol-carrying entity.
The API that all ref trees support
Marks underlying reference to id as boxed.
The API that all references support
An extractor class to create and pattern match with syntax ReferenceToBoxed(ident)
.
Return expression
The API that all returns support
An extractor class to create and pattern match with syntax Return(expr)
.
A member selection <qualifier> .
The API that all selects support
An extractor class to create and pattern match with syntax Select(qual, name)
.
Type selection <qualifier> # <name>, eliminated by RefCheck
The API that all selects from type trees support
An extractor class to create and pattern match with syntax SelectFromTypeTree(qualifier, name)
.
Singleton type, eliminated by RefCheck
The API that all singleton type trees support
An extractor class to create and pattern match with syntax SingletonTypeTree(ref)
.
Repetition of pattern.
The API that all stars support
An extractor class to create and pattern match with syntax Star(elem)
.
Super reference, where qual
is the corresponding this
reference.
The API that all supers support
An extractor class to create and pattern match with syntax Super(qual, mix)
.
A tree with a mutable symbol field, initialized to NoSymbol.
The API that all sym trees support
Instantiation template of a class or trait
The API that all templates support
An extractor class to create and pattern match with syntax Template(parents, self, body)
.
A tree for a term.
The API that all term trees support
Self reference
The API that all thises support
An extractor class to create and pattern match with syntax This(qual)
.
Throw expression
The API that all tries support
An extractor class to create and pattern match with syntax Throw(expr)
.
A class that implement a default tree transformation strategy: breadth-first component-wise cloning.
A class that implement a default tree traversal strategy: breadth-first component-wise.
The type of Scala abstract syntax trees.
The API that all trees support.
The type of standard (lazy) tree copiers.
The API of a tree copier.
Try catch node
The API that all tries support
An extractor class to create and pattern match with syntax Try(block, catches, finalizer)
.
A tree for a type.
The API that all typ trees support
Explicit type application.
The API that all type applies support
An extractor class to create and pattern match with syntax TypeApply(fun, args)
.
Type bounds tree node
The API that all type bound trees support
An extractor class to create and pattern match with syntax TypeBoundsTree(lo, hi)
.
An abstract type, a type parameter, or a type alias.
The API that all type defs support
An extractor class to create and pattern match with syntax TypeDef(mods, name, tparams, rhs)
.
A synthetic tree holding an arbitrary type.
The API that all type trees support
An extractor class to create and pattern match with syntax TypeTree()
.
Type annotation, eliminated by compiler phase cleanup
The API that all typeds support
An extractor class to create and pattern match with syntax Typed(expr, tpt)
.
Used to represent unapply
methods in pattern matching.
The API that all unapplies support
An extractor class to create and pattern match with syntax UnApply(fun, args)
.
Broadly speaking, a value definition.
The API that all val defs support
An extractor class to create and pattern match with syntax ValDef(mods, name, tpt, rhs)
.
A common base class for ValDefs and DefDefs.
The API that all val defs and def defs support
The constructor/extractor for Alternative
instances.
A tag that preserves the identity of the Alternative
abstract type from erasure.
A tag that preserves the identity of the Alternative
abstract type from erasure.
Can be used for pattern matching, instance tests, serialization and likes.
The constructor/extractor for Annotated
instances.
A tag that preserves the identity of the Annotated
abstract type from erasure.
A tag that preserves the identity of the Annotated
abstract type from erasure.
Can be used for pattern matching, instance tests, serialization and likes.
The constructor/extractor for AppliedTypeTree
instances.
A tag that preserves the identity of the AppliedTypeTree
abstract type from erasure.
A tag that preserves the identity of the AppliedTypeTree
abstract type from erasure.
Can be used for pattern matching, instance tests, serialization and likes.
The constructor/extractor for Apply
instances.
A tag that preserves the identity of the Apply
abstract type from erasure.
A tag that preserves the identity of the Apply
abstract type from erasure.
Can be used for pattern matching, instance tests, serialization and likes.
The constructor/extractor for Assign
instances.
The constructor/extractor for AssignOrNamedArg
instances.
A tag that preserves the identity of the AssignOrNamedArg
abstract type from erasure.
A tag that preserves the identity of the AssignOrNamedArg
abstract type from erasure.
Can be used for pattern matching, instance tests, serialization and likes.
A tag that preserves the identity of the Assign
abstract type from erasure.
A tag that preserves the identity of the Assign
abstract type from erasure.
Can be used for pattern matching, instance tests, serialization and likes.
The constructor/extractor for Bind
instances.
A tag that preserves the identity of the Bind
abstract type from erasure.
A tag that preserves the identity of the Bind
abstract type from erasure.
Can be used for pattern matching, instance tests, serialization and likes.
The constructor/extractor for Block
instances.
A tag that preserves the identity of the Block
abstract type from erasure.
A tag that preserves the identity of the Block
abstract type from erasure.
Can be used for pattern matching, instance tests, serialization and likes.
The constructor/extractor for CaseDef
instances.
A tag that preserves the identity of the CaseDef
abstract type from erasure.
A tag that preserves the identity of the CaseDef
abstract type from erasure.
Can be used for pattern matching, instance tests, serialization and likes.
The constructor/extractor for ClassDef
instances.
A tag that preserves the identity of the ClassDef
abstract type from erasure.
A tag that preserves the identity of the ClassDef
abstract type from erasure.
Can be used for pattern matching, instance tests, serialization and likes.
The constructor/extractor for CompoundTypeTree
instances.
A tag that preserves the identity of the CompoundTypeTree
abstract type from erasure.
A tag that preserves the identity of the CompoundTypeTree
abstract type from erasure.
Can be used for pattern matching, instance tests, serialization and likes.
The constructor/extractor for DefDef
instances.
A tag that preserves the identity of the DefDef
abstract type from erasure.
A tag that preserves the identity of the DefDef
abstract type from erasure.
Can be used for pattern matching, instance tests, serialization and likes.
A tag that preserves the identity of the DefTree
abstract type from erasure.
A tag that preserves the identity of the DefTree
abstract type from erasure.
Can be used for pattern matching, instance tests, serialization and likes.
The empty tree
The constructor/extractor for ExistentialTypeTree
instances.
A tag that preserves the identity of the ExistentialTypeTree
abstract type from erasure.
A tag that preserves the identity of the ExistentialTypeTree
abstract type from erasure.
Can be used for pattern matching, instance tests, serialization and likes.
The constructor/extractor for Function
instances.
A tag that preserves the identity of the Function
abstract type from erasure.
A tag that preserves the identity of the Function
abstract type from erasure.
Can be used for pattern matching, instance tests, serialization and likes.
A tag that preserves the identity of the GenericApply
abstract type from erasure.
A tag that preserves the identity of the GenericApply
abstract type from erasure.
Can be used for pattern matching, instance tests, serialization and likes.
A factory method for Ident
nodes.
The constructor/extractor for Ident
instances.
A tag that preserves the identity of the Ident
abstract type from erasure.
A tag that preserves the identity of the Ident
abstract type from erasure.
Can be used for pattern matching, instance tests, serialization and likes.
The constructor/extractor for If
instances.
A tag that preserves the identity of the If
abstract type from erasure.
A tag that preserves the identity of the If
abstract type from erasure.
Can be used for pattern matching, instance tests, serialization and likes.
A tag that preserves the identity of the ImplDef
abstract type from erasure.
A tag that preserves the identity of the ImplDef
abstract type from erasure.
Can be used for pattern matching, instance tests, serialization and likes.
The constructor/extractor for Import
instances.
The constructor/extractor for ImportSelector
instances.
A tag that preserves the identity of the ImportSelector
abstract type from erasure.
A tag that preserves the identity of the ImportSelector
abstract type from erasure.
Can be used for pattern matching, instance tests, serialization and likes.
A tag that preserves the identity of the Import
abstract type from erasure.
A tag that preserves the identity of the Import
abstract type from erasure.
Can be used for pattern matching, instance tests, serialization and likes.
The constructor/extractor for LabelDef
instances.
A tag that preserves the identity of the LabelDef
abstract type from erasure.
A tag that preserves the identity of the LabelDef
abstract type from erasure.
Can be used for pattern matching, instance tests, serialization and likes.
The constructor/extractor for Literal
instances.
A tag that preserves the identity of the Literal
abstract type from erasure.
A tag that preserves the identity of the Literal
abstract type from erasure.
Can be used for pattern matching, instance tests, serialization and likes.
The constructor/extractor for Match
instances.
A tag that preserves the identity of the Match
abstract type from erasure.
A tag that preserves the identity of the Match
abstract type from erasure.
Can be used for pattern matching, instance tests, serialization and likes.
A tag that preserves the identity of the MemberDef
abstract type from erasure.
A tag that preserves the identity of the MemberDef
abstract type from erasure.
Can be used for pattern matching, instance tests, serialization and likes.
The constructor/extractor for Modifiers
instances.
A tag that preserves the identity of the Modifiers
abstract type from erasure.
A tag that preserves the identity of the Modifiers
abstract type from erasure.
Can be used for pattern matching, instance tests, serialization and likes.
The constructor/extractor for ModuleDef
instances.
A tag that preserves the identity of the ModuleDef
abstract type from erasure.
A tag that preserves the identity of the ModuleDef
abstract type from erasure.
Can be used for pattern matching, instance tests, serialization and likes.
A tag that preserves the identity of the NameTree
abstract type from erasure.
A tag that preserves the identity of the NameTree
abstract type from erasure.
Can be used for pattern matching, instance tests, serialization and likes.
The constructor/extractor for New
instances.
A tag that preserves the identity of the New
abstract type from erasure.
A tag that preserves the identity of the New
abstract type from erasure.
Can be used for pattern matching, instance tests, serialization and likes.
The constructor/extractor for PackageDef
instances.
A tag that preserves the identity of the PackageDef
abstract type from erasure.
A tag that preserves the identity of the PackageDef
abstract type from erasure.
Can be used for pattern matching, instance tests, serialization and likes.
A tag that preserves the identity of the RefTree
abstract type from erasure.
A tag that preserves the identity of the RefTree
abstract type from erasure.
Can be used for pattern matching, instance tests, serialization and likes.
The constructor/extractor for ReferenceToBoxed
instances.
A tag that preserves the identity of the ReferenceToBoxed
abstract type from erasure.
A tag that preserves the identity of the ReferenceToBoxed
abstract type from erasure.
Can be used for pattern matching, instance tests, serialization and likes.
The constructor/extractor for Return
instances.
A tag that preserves the identity of the Return
abstract type from erasure.
A tag that preserves the identity of the Return
abstract type from erasure.
Can be used for pattern matching, instance tests, serialization and likes.
A factory method for Select
nodes.
The constructor/extractor for Select
instances.
The constructor/extractor for SelectFromTypeTree
instances.
A tag that preserves the identity of the SelectFromTypeTree
abstract type from erasure.
A tag that preserves the identity of the SelectFromTypeTree
abstract type from erasure.
Can be used for pattern matching, instance tests, serialization and likes.
A tag that preserves the identity of the Select
abstract type from erasure.
A tag that preserves the identity of the Select
abstract type from erasure.
Can be used for pattern matching, instance tests, serialization and likes.
The constructor/extractor for SingletonTypeTree
instances.
A tag that preserves the identity of the SingletonTypeTree
abstract type from erasure.
A tag that preserves the identity of the SingletonTypeTree
abstract type from erasure.
Can be used for pattern matching, instance tests, serialization and likes.
The constructor/extractor for Star
instances.
A tag that preserves the identity of the Star
abstract type from erasure.
A tag that preserves the identity of the Star
abstract type from erasure.
Can be used for pattern matching, instance tests, serialization and likes.
The constructor/extractor for Super
instances.
A tag that preserves the identity of the Super
abstract type from erasure.
A tag that preserves the identity of the Super
abstract type from erasure.
Can be used for pattern matching, instance tests, serialization and likes.
A tag that preserves the identity of the SymTree
abstract type from erasure.
A tag that preserves the identity of the SymTree
abstract type from erasure.
Can be used for pattern matching, instance tests, serialization and likes.
The constructor/extractor for Template
instances.
A tag that preserves the identity of the Template
abstract type from erasure.
A tag that preserves the identity of the Template
abstract type from erasure.
Can be used for pattern matching, instance tests, serialization and likes.
A tag that preserves the identity of the TermTree
abstract type from erasure.
A tag that preserves the identity of the TermTree
abstract type from erasure.
Can be used for pattern matching, instance tests, serialization and likes.
A factory method for This
nodes.
The constructor/extractor for This
instances.
A tag that preserves the identity of the This
abstract type from erasure.
A tag that preserves the identity of the This
abstract type from erasure.
Can be used for pattern matching, instance tests, serialization and likes.
The constructor/extractor for Throw
instances.
A tag that preserves the identity of the Throw
abstract type from erasure.
A tag that preserves the identity of the Throw
abstract type from erasure.
Can be used for pattern matching, instance tests, serialization and likes.
A tag that preserves the identity of the Tree
abstract type from erasure.
A tag that preserves the identity of the Tree
abstract type from erasure.
Can be used for pattern matching, instance tests, serialization and likes.
The constructor/extractor for Try
instances.
A tag that preserves the identity of the Try
abstract type from erasure.
A tag that preserves the identity of the Try
abstract type from erasure.
Can be used for pattern matching, instance tests, serialization and likes.
A tag that preserves the identity of the TypTree
abstract type from erasure.
A tag that preserves the identity of the TypTree
abstract type from erasure.
Can be used for pattern matching, instance tests, serialization and likes.
The constructor/extractor for TypeApply
instances.
A tag that preserves the identity of the TypeApply
abstract type from erasure.
A tag that preserves the identity of the TypeApply
abstract type from erasure.
Can be used for pattern matching, instance tests, serialization and likes.
The constructor/extractor for TypeBoundsTree
instances.
A tag that preserves the identity of the TypeBoundsTree
abstract type from erasure.
A tag that preserves the identity of the TypeBoundsTree
abstract type from erasure.
Can be used for pattern matching, instance tests, serialization and likes.
The constructor/extractor for TypeDef
instances.
A tag that preserves the identity of the TypeDef
abstract type from erasure.
A tag that preserves the identity of the TypeDef
abstract type from erasure.
Can be used for pattern matching, instance tests, serialization and likes.
A factory method for TypeTree
nodes.
The constructor/extractor for TypeTree
instances.
A tag that preserves the identity of the TypeTree
abstract type from erasure.
A tag that preserves the identity of the TypeTree
abstract type from erasure.
Can be used for pattern matching, instance tests, serialization and likes.
The constructor/extractor for Typed
instances.
A tag that preserves the identity of the Typed
abstract type from erasure.
A tag that preserves the identity of the Typed
abstract type from erasure.
Can be used for pattern matching, instance tests, serialization and likes.
The constructor/extractor for UnApply
instances.
A tag that preserves the identity of the UnApply
abstract type from erasure.
A tag that preserves the identity of the UnApply
abstract type from erasure.
Can be used for pattern matching, instance tests, serialization and likes.
The constructor/extractor for ValDef
instances.
A tag that preserves the identity of the ValDef
abstract type from erasure.
A tag that preserves the identity of the ValDef
abstract type from erasure.
Can be used for pattern matching, instance tests, serialization and likes.
A tag that preserves the identity of the ValOrDefDef
abstract type from erasure.
A tag that preserves the identity of the ValOrDefDef
abstract type from erasure.
Can be used for pattern matching, instance tests, serialization and likes.
An empty deferred value definition corresponding to:
val _: _
This is used as a placeholder in the self
parameter Template if there is
no definition of a self value of self type.
Creates a lazy tree copier.
Creates a strict tree copier.
Obtains string representation of a tree
Obtains string representation of a tree
A factory method for Apply
nodes.
A factory method for Apply
nodes.
(Since version 2.10.1) Use Apply(Ident(sym), args.toList) instead
0-1 argument list new, based on a type tree.
0-1 argument list new, based on a type tree.
(Since version 2.10.1) Use Apply(Select(New(tpt), nme.CONSTRUCTOR), args) instead
A factory method for Bind
nodes.
A factory method for Bind
nodes.
(Since version 2.10.1) Use the canonical Bind constructor to create a bind and then initialize its symbol manually
A factory method for Block
nodes.
A factory method for Block
nodes.
Flattens directly nested blocks.
(Since version 2.10.1) Use the canonical Block constructor, explicitly specifying its expression if necessary. Flatten directly nested blocks manually if needed
A factory method for CaseDef
nodes.
A factory method for CaseDef
nodes.
(Since version 2.10.1) Use the canonical CaseDef constructor passing EmptyTree for guard
A factory method for ClassDef
nodes.
A factory method for ClassDef
nodes.
(Since version 2.10.1) Use the canonical ClassDef constructor to create a class and then initialize its position and symbol manually
A factory method for ValDef
nodes.
A factory method for ValDef
nodes.
(Since version 2.10.1) Use the canonical DefDef constructor to create a method and then initialize its position and symbol manually
A factory method for ValDef
nodes.
A factory method for ValDef
nodes.
(Since version 2.10.1) Use the canonical DefDef constructor to create a method and then initialize its position and symbol manually
A factory method for ValDef
nodes.
A factory method for ValDef
nodes.
(Since version 2.10.1) Use the canonical DefDef constructor to create a method and then initialize its position and symbol manually
A factory method for ValDef
nodes.
A factory method for ValDef
nodes.
(Since version 2.10.1) Use the canonical DefDef constructor to create a method and then initialize its position and symbol manually
A factory method for ValDef
nodes.
A factory method for ValDef
nodes.
(Since version 2.10.1) Use the canonical DefDef constructor to create a method and then initialize its position and symbol manually
A factory method for Ident
nodes.
A factory method for Ident
nodes.
(Since version 2.10.1) Use Ident(newTermName(name)) instead
A factory method for LabelDef
nodes.
A factory method for LabelDef
nodes.
(Since version 2.10.1) Use the canonical LabelDef constructor to create a label and then initialize its position and symbol manually
A factory method for ModuleDef
nodes.
A factory method for ModuleDef
nodes.
(Since version 2.10.1) Use the canonical ModuleDef constructor to create an object and then initialize its position and symbol manually
0-1 argument list new, based on a symbol.
0-1 argument list new, based on a symbol.
(Since version 2.10.1) Use New(sym.toType, args) instead
0-1 argument list new, based on a type.
0-1 argument list new, based on a type.
(Since version 2.10.1) Use New(TypeTree(tpe), args.toList) instead
Factory method for object creation new tpt(args_1)...(args_n)
A New(t, as)
is expanded to: (new t).<init>(as)
Factory method for object creation new tpt(args_1)...(args_n)
A New(t, as)
is expanded to: (new t).<init>(as)
(Since version 2.10.1) Use Apply(...Apply(Select(New(tpt), nme.CONSTRUCTOR), args1)...argsN) instead
A factory method for Select
nodes.
A factory method for Select
nodes.
The string name
argument is assumed to represent a TermName
.
(Since version 2.10.1) Use Select(tree, newTermName(name)) instead
A factory method for Super
nodes.
A factory method for Super
nodes.
(Since version 2.10.1) Use Super(This(sym), mix) instead
A factory method for Throw
nodes.
A factory method for Throw
nodes.
(Since version 2.10.1) Use the canonical New constructor to create an object instantiation expression and then wrap it in Throw
A factory method for Try
nodes.
A factory method for Try
nodes.
(Since version 2.10.1) Use canonical CaseDef constructors to to create exception catching expressions and then wrap them in Try
A factory method for TypeDef
nodes.
A factory method for TypeDef
nodes.
(Since version 2.10.1) Use the canonical TypeDef constructor to create an abstract type or type parameter and then initialize its position and symbol manually
A factory method for TypeDef
nodes.
A factory method for TypeDef
nodes.
(Since version 2.10.1) Use the canonical TypeDef constructor to create a type alias and then initialize its position and symbol manually
A factory method for ValDef
nodes.
A factory method for ValDef
nodes.
(Since version 2.10.1) Use the canonical ValDef constructor to create a val with an empty right-hand side and then initialize its position and symbol manually
A factory method for ValDef
nodes.
A factory method for ValDef
nodes.
(Since version 2.10.1) Use the canonical ValDef constructor to create a val and then initialize its position and symbol manually
Test two objects for inequality.
Test two objects for inequality.
true
if !(this == that), false otherwise.
Equivalent to x.hashCode
except for boxed numeric types and null
.
Equivalent to x.hashCode
except for boxed numeric types and null
.
For numerics, it returns a hash value which is consistent
with value equality: if two value type instances compare
as true, then ## will produce the same hash value for each
of them.
For null
returns a hashcode where null.hashCode
throws a
NullPointerException
.
a hash value consistent with ==
Test two objects for equality.
Test two objects for equality.
The expression x == that
is equivalent to if (x eq null) that eq null else x.equals(that)
.
true
if the receiver object is equivalent to the argument; false
otherwise.
The factory for Modifiers
instances.
The factory for Modifiers
instances.
An empty Modifiers
object: no flags, empty visibility annotation and no Scala annotations.
Cast the receiver object to be of type T0
.
Cast the receiver object to be of type T0
.
Note that the success of a cast at runtime is modulo Scala's erasure semantics.
Therefore the expression 1.asInstanceOf[String]
will throw a ClassCastException
at
runtime, while the expression List(1).asInstanceOf[List[String]]
will not.
In the latter example, because the type argument is erased as part of compilation it is
not possible to check whether the contents of the list are of the requested type.
the receiver object.
if the receiver object is not an instance of the erasure of type T0
.
Create a copy of the receiver object.
Tests whether the argument (arg0
) is a reference to the receiver object (this
).
Tests whether the argument (arg0
) is a reference to the receiver object (this
).
The eq
method implements an equivalence relation on
non-null instances of AnyRef
, and has three additional properties:
x
and y
of type AnyRef
, multiple invocations of
x.eq(y)
consistently returns true
or consistently returns false
.x
of type AnyRef
, x.eq(null)
and null.eq(x)
returns false
.null.eq(null)
returns true
. When overriding the equals
or hashCode
methods, it is important to ensure that their behavior is
consistent with reference equality. Therefore, if two objects are references to each other (o1 eq o2
), they
should be equal to each other (o1 == o2
) and they should hash to the same value (o1.hashCode == o2.hashCode
).
true
if the argument is a reference to the receiver object; false
otherwise.
The equality method for reference types.
Called by the garbage collector on the receiver object when there are no more references to the object.
Called by the garbage collector on the receiver object when there are no more references to the object.
The details of when and if the finalize
method is invoked, as
well as the interaction between finalize
and non-local returns
and exceptions, are all platform dependent.
Returns string formatted according to given format
string.
Returns string formatted according to given format
string.
Format strings are as for String.format
(@see java.lang.String.format).
A representation that corresponds to the dynamic class of the receiver object.
A representation that corresponds to the dynamic class of the receiver object.
The nature of the representation is platform dependent.
a representation that corresponds to the dynamic class of the receiver object.
not specified by SLS as a member of AnyRef
The hashCode method for reference types.
Test whether the dynamic type of the receiver object is T0
.
Test whether the dynamic type of the receiver object is T0
.
Note that the result of the test is modulo Scala's erasure semantics.
Therefore the expression 1.isInstanceOf[String]
will return false
, while the
expression List(1).isInstanceOf[List[String]]
will return true
.
In the latter example, because the type argument is erased as part of compilation it is
not possible to check whether the contents of the list are of the specified type.
true
if the receiver object is an instance of erasure of type T0
; false
otherwise.
Delegates the transformation strategy to scala.reflect.internal.Trees
,
because pattern matching on abstract types we have here degrades performance.
Delegates the transformation strategy to scala.reflect.internal.Trees
,
because pattern matching on abstract types we have here degrades performance.
Delegates the traversal strategy to scala.reflect.internal.Trees
,
because pattern matching on abstract types we have here degrades performance.
Delegates the traversal strategy to scala.reflect.internal.Trees
,
because pattern matching on abstract types we have here degrades performance.
Equivalent to !(this eq that)
.
Equivalent to !(this eq that)
.
true
if the argument is not a reference to the receiver object; false
otherwise.
Wakes up a single thread that is waiting on the receiver object's monitor.
Wakes up a single thread that is waiting on the receiver object's monitor.
not specified by SLS as a member of AnyRef
Wakes up all threads that are waiting on the receiver object's monitor.
Wakes up all threads that are waiting on the receiver object's monitor.
not specified by SLS as a member of AnyRef
Creates a String representation of this object.
Creates a String representation of this object. The default representation is platform dependent. On the java platform it is the concatenation of the class name, "@", and the object's hashcode in hexadecimal.
a String representation of the object.
The standard (lazy) tree copier.
Provides an extension hook for the transformation strategy.
Provides an extension hook for the transformation strategy. Future-proofs against new node types.
Provides an extension hook for the traversal strategy.
Provides an extension hook for the traversal strategy. Future-proofs against new node types.
(trees: StringAdd).self
(trees: StringFormat).self
(trees: ArrowAssoc[Trees]).x
(Since version 2.10.0) Use leftOfArrow
instead
(trees: Ensuring[Trees]).x
(Since version 2.10.0) Use resultOfEnsuring
instead
The methods available for each reflection entity, without the implementation. Since the reflection entities are later overridden by runtime reflection and macros, their API counterparts guarantee a minimum set of methods that are implemented.
Extractors provide the machinery necessary to allow pattern matching and construction of reflection entities that is similar to case classes, although the entities are only abstract types that are later overridden.
Implicit values that provide ClassTags
for the reflection
classes. These are abstract in the interface but are later filled in to provide ClassTags
for the either the runtime reflection or macros entities, depending on the use.
EXPERIMENTAL
This trait defines the node types used in Scala abstract syntax trees (AST) and operations on them.
Trees are the basis for Scala's abstract syntax that is used to represent programs. They are also called abstract syntax trees and commonly abbreviated as ASTs.
In Scala reflection, APIs that produce or use
Tree
s are:Trees are immutable, except for three fields pos, symbol, and tpe, which are assigned when a tree is typechecked to attribute it with the information gathered by the typechecker.
Examples
The following creates an AST representing a literal 5 in Scala source code:
Literal(Constant(5))
The following creates an AST representing
print("Hello World")
:The following creates an AST from a literal 5, and then uses
showRaw
to print it in a readable format.For more information about
Tree
s, see the Reflection Guide: Symbols, Trees, Types.