If an implicit value of type u.
Alternatives of patterns, eliminated by explicitouter, except for occurrences in encoded Switch stmt (=remaining Match(CaseDef(.
An extractor class to create and pattern match with syntax Alternative(trees)
.
A tree that has an annotation attached to it.
An extractor class to create and pattern match with syntax Annotated(annot, arg)
.
The AnnotatedType
type signature is used for annotated types of the
for <type> @<annotation>
.
An extractor class to create and pattern match with syntax
AnnotatedType(annotations, underlying, selfsym)
.
Applied type <tpt> [ <args> ], eliminated by RefCheck
An extractor class to create and pattern match with syntax AppliedTypeTree(tpt, args)
.
Value application
Dynamic value application.
An extractor class to create and pattern match with syntax ApplyDynamic(qual, args)
.
An extractor class to create and pattern match with syntax Apply(fun, args)
.
Array of expressions, needs to be translated in backend.
An extractor class to create and pattern match with syntax ArrayValue(elemtpt, elems)
.
Assignment
An extractor class to create and pattern match with syntax Assign(lhs, rhs)
.
Either an assignment or a named argument.
An extractor class to create and pattern match with syntax AssignOrNamedArg(lhs, rhs)
.
Bind of a variable to a rhs pattern, eliminated by explicitouter Eliminated by patmat/explicitouter.
An extractor class to create and pattern match with syntax Bind(name, body)
.
Block of expressions (semicolon separated expressions)
An extractor class to create and pattern match with syntax Block(stats, expr)
.
BoundedWildcardTypes, used only during type inference, are created in two places that I can find:
Case clause in a pattern match, eliminated during explicitouter (except for occurrences in switch statements).
An extractor class to create and pattern match with syntax CaseDef(pat, guard, body)
.
A class definition.
An extractor class to create and pattern match with syntax ClassDef(mods, name, tparams, impl)
.
The ClassInfo
type signature is used to define parents and declarations
of classes, traits, and objects.
An extractor class to create and pattern match with syntax ClassInfo(parents, decls, clazz)
Here, parents
is the list of parent types of the class, decls
is the scope
containing all declarations in the class, and clazz
is the symbol of the class
itself.
The abstract type of class symbols representing class and trait definitions
The base API that all class symbols support
A subtype of Type representing refined types as well as ClassInfo
signatures.
Intersection type <parent1> with .
An extractor class to create and pattern match with syntax CompoundTypeTree(templ)
.
The ConstantType
type is not directly written in user programs, but arises as the type of a constant.
An extractor class to create and pattern match with syntax ConstantType(constant)
Here, constant
is the constant value represented by the type.
A method or macro definition.
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 ExistentialType
type signature is used for existential types and
wildcard types.
An extractor class to create and pattern match with syntax
ExistentialType(quantified, underlying)
.
Document me!
An extractor class to create and pattern match with syntax ExistentialTypeTree(tpt, whereClauses)
.
An abstract type representing sets of flags that apply to definition trees and symbols
The abstract type of free terms introduced by reification
The base API that all free term symbols support
The abstract type of free types introduced by reification
The base API that all free type symbols support
Anonymous function, eliminated by lambdalift
An extractor class to create and pattern match with syntax Function(vparams, body)
.
Common base class for Apply and TypeApply.
Identifier <name>
An extractor class to create and pattern match with syntax Ident(qual, name)
.
Conditional expression
An extractor class to create and pattern match with syntax If(cond, thenp, elsep)
.
A common base class for class and object definitions.
Import clause
An extractor class to create and pattern match with syntax Import(expr, selectors)
.
Import selector
An extractor class to create and pattern match with syntax ImportSelector(name:, namePos, rename, renamePos)
.
A labelled expression.
An extractor class to create and pattern match with syntax LabelDef(name, params, rhs)
.
Literal
An extractor class to create and pattern match with syntax Literal(value)
.
- Pattern matching expression (before explicitouter)
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 abstract type of method symbols representing def declarations
The base API that all method symbols support
The MethodType
type signature is used to indicate parameters and result type of a method
An extractor class to create and pattern match with syntax MethodType(params, respte)
Here, params
is a potentially empty list of parameter symbols of the method,
and restpe
is the result type of the method.
.
.
.
An object definition, e.
An extractor class to create and pattern match with syntax ModuleDef(mods, name, impl)
.
The abstract type of module symbols representing object declarations
The base API that all module symbols support
The abstract type of names
The base API that all names support
A tree with a name - effectively, a DefTree or RefTree.
Object instantiation One should always use factory method below to build a user level new.
An extractor class to create and pattern match with syntax New(tpt)
.
The NullaryMethodType
type signature is used for parameterless methods
with declarations of the form def foo: T
An extractor class to create and pattern match with syntax NullaryMethodType(resultType)
.
A packaging, such as package pid { stats }
An extractor class to create and pattern match with syntax PackageDef(pid, stats)
.
The PolyType
type signature is used for polymorphic methods
that have at least one type parameter.
An extractor class to create and pattern match with syntax PolyType(typeParams, resultType)
.
.
A tree which references a symbol-carrying entity.
Marks underlying reference to id as boxed.
An extractor class to create and pattern match with syntax ReferenceToBoxed(ident)
.
The RefinedType
type defines types of any of the forms on the left,
with their RefinedType representations to the right.
An extractor class to create and pattern match with syntax RefinedType(parents, decls)
Here, parents
is the list of parent types of the class, and decls
is the scope
containing all declarations in the class.
Return expression
An extractor class to create and pattern match with syntax Return(expr)
.
Designator <qualifier> .
An extractor class to create and pattern match with syntax Select(qual, name)
.
Type selection <qualifier> # <name>, eliminated by RefCheck
An extractor class to create and pattern match with syntax SelectFromTypeTree(qualifier, name)
.
The SingleType
type describes types of any of the forms on the left,
with their TypeRef representations to the right.
An extractor class to create and pattern match with syntax SingleType(pre, sym)
Here, pre
is the prefix of the single-type, and sym
is the stable value symbol
referred to by the single-type.
The type of Scala singleton types, i.
Singleton type, eliminated by RefCheck
An extractor class to create and pattern match with syntax SingletonTypeTree(ref)
.
Repetition of pattern.
An extractor class to create and pattern match with syntax Star(elem)
.
Super reference, qual = corresponding this reference A super reference C.
An extractor class to create and pattern match with syntax Super(qual, mix)
.
The SuperType
type is not directly written, but arises when C.super
is used
as a prefix in a TypeRef
or SingleType
.
An extractor class to create and pattern match with syntax SingleType(thistpe, supertpe)
A tree with a mutable symbol field, initialized to NoSymbol.
The abstract type of symbols representing declarations
The base API that all symbols support
Instantiation template of a class or trait
An extractor class to create and pattern match with syntax Template(parents, self, body)
.
The abstract type of names representing types
The abstract type of term symbols representing val, var, def, and object declarations as well as packages and value parameters.
The base API that all term symbols support
A tree for a term.
Self reference
An extractor class to create and pattern match with syntax This(qual)
.
The ThisType
type describes types of the form on the left with the
correspnding ThisType representations to the right.
An extractor class to create and pattern match with syntax ThisType(sym)
where sym
is the class prefix of the this type.
Throw expression
An extractor class to create and pattern match with syntax Throw(expr)
.
Tree is the basis for scala's abstract syntax.
The base API that all trees support
[Eugene++] comment me!
An extractor class to create and pattern match with syntax Try(block, catches, finalizer)
.
A tree for a type.
The type of Scala types, and also Scala type signatures.
Explicit type application.
An extractor class to create and pattern match with syntax TypeApply(fun, args)
.
The base API that all types support
The TypeBounds
type signature is used to indicate lower and upper type bounds
of type parameters and abstract types.
An extractor class to create and pattern match with syntax TypeBound(lower, upper)
Here, lower
is the lower bound of the TypeBounds
pair, and upper
is
the upper bound.
Document me!
An extractor class to create and pattern match with syntax TypeBoundsTree(lo, hi)
.
An abstract type, a type parameter, or a type alias.
An extractor class to create and pattern match with syntax TypeDef(mods, name, tparams, rhs)
.
The abstract type of names representing terms
The TypeRef
type describes types of any of the forms on the left,
with their TypeRef representations to the right.
An extractor class to create and pattern match with syntax TypeRef(pre, sym, args)
Here, pre
is the prefix of the type reference, sym
is the symbol
referred to by the type reference, and args
is a possible empty list of
type argumenrts.
The abstract type of type symbols representing type, class, and trait declarations, as well as type parameters
The base API that all type symbols support
If an implicit value of type u.
A synthetic tree holding an arbitrary type.
An extractor class to create and pattern match with syntax TypeTree()
.
Type annotation, eliminated by cleanup
An extractor class to create and pattern match with syntax Typed(expr, tpt)
.
Noone knows what this is.
An extractor class to create and pattern match with syntax UnApply(fun, args)
.
Broadly speaking, a value definition.
An extractor class to create and pattern match with syntax ValDef(mods, name, tpt, rhs)
.
A common base class for ValDefs and DefDefs.
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 constructor/deconstructor for Alternative
instances.
A tag that preserves the identity of the Alternative
abstract type from erasure.
The constructor/deconstructor for Annotated
instances.
A tag that preserves the identity of the Annotated
abstract type from erasure.
The constructor/deconstructor for AnnotatedType
instances.
A tag that preserves the identity of the AnnotatedType
abstract type from erasure.
The constructor/deconstructor for AppliedTypeTree
instances.
A tag that preserves the identity of the AppliedTypeTree
abstract type from erasure.
The constructor/deconstructor for Apply
instances.
The constructor/deconstructor for ApplyDynamic
instances.
A tag that preserves the identity of the ApplyDynamic
abstract type from erasure.
A tag that preserves the identity of the Apply
abstract type from erasure.
The constructor/deconstructor for ArrayValue
instances.
A tag that preserves the identity of the ArrayValue
abstract type from erasure.
The constructor/deconstructor for Assign
instances.
The constructor/deconstructor for AssignOrNamedArg
instances.
A tag that preserves the identity of the AssignOrNamedArg
abstract type from erasure.
A tag that preserves the identity of the Assign
abstract type from erasure.
The constructor/deconstructor for Bind
instances.
A tag that preserves the identity of the Bind
abstract type from erasure.
Block factory that flattens directly nested blocks.
The constructor/deconstructor for Block
instances.
A tag that preserves the identity of the Block
abstract type from erasure.
A tag that preserves the identity of the BoundedWildcardType
abstract type from erasure.
casedef shorthand
The constructor/deconstructor for CaseDef
instances.
A tag that preserves the identity of the CaseDef
abstract type from erasure.
The constructor/deconstructor for ClassDef
instances.
A tag that preserves the identity of the ClassDef
abstract type from erasure.
The constructor/deconstructor for ClassInfoType
instances.
A tag that preserves the identity of the ClassInfoType
abstract type from erasure.
A tag that preserves the identity of the ClassSymbol
abstract type from erasure.
A tag that preserves the identity of the CompoundType
abstract type from erasure.
The constructor/deconstructor for CompoundTypeTree
instances.
A tag that preserves the identity of the CompoundTypeTree
abstract type from erasure.
The constructor/deconstructor for ConstantType
instances.
A tag that preserves the identity of the ConstantType
abstract type from erasure.
The constructor/deconstructor for DefDef
instances.
A tag that preserves the identity of the DefDef
abstract type from erasure.
A tag that preserves the identity of the DefTree
abstract type from erasure.
The empty tree
The constructor/deconstructor for ExistentialType
instances.
A tag that preserves the identity of the ExistentialType
abstract type from erasure.
The constructor/deconstructor for ExistentialTypeTree
instances.
A tag that preserves the identity of the ExistentialTypeTree
abstract type from erasure.
A tag that preserves the identity of the FlagSet
abstract type from erasure.
A tag that preserves the identity of the FreeTermSymbol
abstract type from erasure.
A tag that preserves the identity of the FreeTypeSymbol
abstract type from erasure.
The constructor/deconstructor for Function
instances.
A tag that preserves the identity of the Function
abstract type from erasure.
A tag that preserves the identity of the GenericApply
abstract type from erasure.
The constructor/deconstructor for Ident
instances.
A tag that preserves the identity of the Ident
abstract type from erasure.
The constructor/deconstructor for If
instances.
A tag that preserves the identity of the If
abstract type from erasure.
A tag that preserves the identity of the ImplDef
abstract type from erasure.
The constructor/deconstructor for Import
instances.
The constructor/deconstructor for ImportSelector
instances.
A tag that preserves the identity of the ImportSelector
abstract type from erasure.
A tag that preserves the identity of the Import
abstract type from erasure.
The constructor/deconstructor for LabelDef
instances.
A tag that preserves the identity of the LabelDef
abstract type from erasure.
The constructor/deconstructor for Literal
instances.
A tag that preserves the identity of the Literal
abstract type from erasure.
The constructor/deconstructor for Match
instances.
A tag that preserves the identity of the Match
abstract type from erasure.
A tag that preserves the identity of the MemberDef
abstract type from erasure.
A tag that preserves the identity of the MethodSymbol
abstract type from erasure.
The constructor/deconstructor for MethodType
instances.
A tag that preserves the identity of the MethodType
abstract type from erasure.
A tag that preserves the identity of the Modifiers
abstract type from erasure.
The constructor/deconstructor for ModuleDef
instances.
A tag that preserves the identity of the ModuleDef
abstract type from erasure.
A tag that preserves the identity of the ModuleSymbol
abstract type from erasure.
A tag that preserves the identity of the NameTree
abstract type from erasure.
0-1 argument list new, based on a type.
Factory method for object creation new tpt(args_1)...(args_n)
A New(t, as)
is expanded to: (new t).<init>(as)
The constructor/deconstructor for New
instances.
A tag that preserves the identity of the New
abstract type from erasure.
The empty set of flags
.
...
.
This constant is used as a special value denoting the empty prefix in a path dependent type.
A special "missing" symbol
This constant is used as a special value that indicates that no meaningful type exists.
The constructor/deconstructor for NullaryMethodType
instances.
A tag that preserves the identity of the NullaryMethodType
abstract type from erasure.
The constructor/deconstructor for PackageDef
instances.
A tag that preserves the identity of the PackageDef
abstract type from erasure.
The constructor/deconstructor for PolyType
instances.
A tag that preserves the identity of the PolyType
abstract type from erasure.
A tag that preserves the identity of the FlagSet
abstract type from erasure.
A tag that preserves the identity of the RefTree
abstract type from erasure.
The constructor/deconstructor for ReferenceToBoxed
instances.
A tag that preserves the identity of the ReferenceToBoxed
abstract type from erasure.
The constructor/deconstructor for RefinedType
instances.
A tag that preserves the identity of the RefinedType
abstract type from erasure.
The constructor/deconstructor for Return
instances.
A tag that preserves the identity of the Return
abstract type from erasure.
A tag that preserves the identity of the Scope
abstract type from erasure.
The constructor/deconstructor for Select
instances.
The constructor/deconstructor for SelectFromTypeTree
instances.
A tag that preserves the identity of the SelectFromTypeTree
abstract type from erasure.
A tag that preserves the identity of the Select
abstract type from erasure.
The constructor/deconstructor for SingleType
instances.
A tag that preserves the identity of the SingleType
abstract type from erasure.
A tag that preserves the identity of the SingletonType
abstract type from erasure.
The constructor/deconstructor for SingletonTypeTree
instances.
A tag that preserves the identity of the SingletonTypeTree
abstract type from erasure.
The constructor/deconstructor for Star
instances.
A tag that preserves the identity of the Star
abstract type from erasure.
The constructor/deconstructor for Super
instances.
A tag that preserves the identity of the Super
abstract type from erasure.
The constructor/deconstructor for SuperType
instances.
A tag that preserves the identity of the SuperType
abstract type from erasure.
A tag that preserves the identity of the SymTree
abstract type from erasure.
A tag that preserves the identity of the Symbol
abstract type from erasure.
The constructor/deconstructor for Template
instances.
A tag that preserves the identity of the Template
abstract type from erasure.
A tag that preserves the identity of the TermSymbol
abstract type from erasure.
A tag that preserves the identity of the TermTree
abstract type from erasure.
The constructor/deconstructor for This
instances.
A tag that preserves the identity of the This
abstract type from erasure.
The constructor/deconstructor for ThisType
instances.
A tag that preserves the identity of the ThisType
abstract type from erasure.
The constructor/deconstructor for Throw
instances.
A tag that preserves the identity of the Throw
abstract type from erasure.
A tag that preserves the identity of the Tree
abstract type from erasure.
The constructor/deconstructor for Try
instances.
A tag that preserves the identity of the Try
abstract type from erasure.
A tag that preserves the identity of the TypTree
abstract type from erasure.
The constructor/deconstructor for TypeApply
instances.
A tag that preserves the identity of the TypeApply
abstract type from erasure.
The constructor/deconstructor for TypeBounds
instances.
A tag that preserves the identity of the TypeBounds
abstract type from erasure.
The constructor/deconstructor for TypeBoundsTree
instances.
A tag that preserves the identity of the TypeBoundsTree
abstract type from erasure.
A TypeDef node which defines abstract type or type parameter for given sym
A TypeDef node which defines given sym
with given tight hand side rhs
.
The constructor/deconstructor for TypeDef
instances.
A tag that preserves the identity of the TypeDef
abstract type from erasure.
The constructor/deconstructor for TypeRef
instances.
A tag that preserves the identity of the TypeRef
abstract type from erasure.
A tag that preserves the identity of the TypeSymbol
abstract type from erasure.
A tag that preserves the identity of the Type
abstract type from erasure.
The constructor/deconstructor for TypeTree
instances.
A tag that preserves the identity of the TypeTree
abstract type from erasure.
The constructor/deconstructor for Typed
instances.
A tag that preserves the identity of the Typed
abstract type from erasure.
The constructor/deconstructor for UnApply
instances.
A tag that preserves the identity of the UnApply
abstract type from erasure.
The constructor/deconstructor for ValDef
instances.
A tag that preserves the identity of the ValDef
abstract type from erasure.
A tag that preserves the identity of the ValOrDefDef
abstract type from erasure.
An object representing an unknown type, used during type inference.
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
.
Assigns a given position to all position-less nodes of a given AST.
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.
Equivalent to !(this eq that)
.
Equivalent to !(this eq that)
.
true
if the argument is not a reference to the receiver object; false
otherwise.
Create a new scope nested in another one with which it shares its elements
Create a new scope
Create a new scope with given initial elements
Create a new term name.
Creates a new type name.
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
Obtains string representation of a tree
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.
(Since version 2.10.0) Use leftOfArrow instead
(Since version 2.10.0) Use resultOfEnsuring instead