DartType class Null safety

The type associated with elements in the element model.

Clients may not extend, implement or mix-in this class.

Implementers

Constructors

DartType()

Properties

alias → InstantiatedTypeAliasElement?
If this type is an instantiation of a type alias, information about the alias element, and the type arguments. Otherwise return null.
read-only
aliasArguments → List<DartType>?
If this type is an instantiation of a type alias, return the type arguments used for the instantiation. Otherwise return null.
@Deprecated('Use alias instead'), read-only
aliasElement → TypeAliasElement?
If this type is an instantiation of a type alias, return it. Otherwise return null.
@Deprecated('Use alias instead'), read-only
displayName → String
Return the name of this type as it should appear when presented to users in contexts such as error messages. [...]
@Deprecated('Use getDisplayString instead'), read-only
element → Element?
Return the element representing the declaration of this type, or null if the type has not, or cannot, be associated with an element. The former case will occur if the element model is not yet complete; the latter case will occur if this object represents an undefined type.
read-only
hashCode → int
The hash code for this object. [...]
read-only, inherited
isBottom → bool
Return true if this type represents the bottom type.
read-only
isDartAsyncFuture → bool
Return true if this type represents the type 'Future' defined in the dart:async library.
read-only
isDartAsyncFutureOr → bool
Return true if this type represents the type 'FutureOr' defined in the dart:async library.
read-only
isDartCoreBool → bool
Return true if this type represents the type 'bool' defined in the dart:core library.
read-only
isDartCoreDouble → bool
Return true if this type represents the type 'double' defined in the dart:core library.
read-only
isDartCoreFunction → bool
Return true if this type represents the type 'Function' defined in the dart:core library.
read-only
isDartCoreInt → bool
Return true if this type represents the type 'int' defined in the dart:core library.
read-only
isDartCoreIterable → bool
Returns true if this type represents the type 'Iterable' defined in the dart:core library.
read-only
isDartCoreList → bool
Returns true if this type represents the type 'List' defined in the dart:core library.
read-only
isDartCoreMap → bool
Returns true if this type represents the type 'Map' defined in the dart:core library.
read-only
isDartCoreNull → bool
Return true if this type represents the type 'Null' defined in the dart:core library.
read-only
isDartCoreNum → bool
Return true if this type represents the type 'num' defined in the dart:core library.
read-only
isDartCoreObject → bool
Return true if this type represents the type Object defined in the dart:core library.
read-only
isDartCoreSet → bool
Returns true if this type represents the type 'Set' defined in the dart:core library.
read-only
isDartCoreString → bool
Return true if this type represents the type 'String' defined in the dart:core library.
read-only
isDartCoreSymbol → bool
Returns true if this type represents the type 'Symbol' defined in the dart:core library.
read-only
isDynamic → bool
Return true if this type represents the type 'dynamic'.
read-only
isVoid → bool
Return true if this type represents the type 'void'.
read-only
name → String?
Return the name of this type, or null if the type does not have a name, such as when the type represents the type of an unnamed function.
@Deprecated('Check element, or use getDisplayString()'), read-only
nullabilitySuffix → NullabilitySuffix
Return the nullability suffix of this type.
read-only
runtimeType → Type
A representation of the runtime type of the object.
read-only, inherited

Methods

accept<R>(TypeVisitor<R> visitor) → R
Use the given visitor to visit this type.
acceptWithArgument<R, A>(TypeVisitorWithArgument<R, A> visitor, A argument) → R
Use the given visitor to visit this type.
asInstanceOf(ClassElement element) → InterfaceType?
Return the canonical interface that this type implements for element, or null if such an interface does not exist. [...]
getDisplayString({required bool withNullability}) → String
Return the presentation of this type as it should appear when presented to users in contexts such as error messages. [...]
noSuchMethod(Invocation invocation) → dynamic
Invoked when a non-existent method or property is accessed. [...]
inherited
resolveToBound(DartType objectType) → DartType
If this type is a TypeParameterType, returns its bound if it has one, or objectType otherwise. [...]
toString() → String
A string representation of this object. [...]
inherited

Operators

operator ==(Object other) → bool
The equality operator. [...]
inherited