Element class abstract

The base class for all of the elements in the element model. Generally speaking, the element model is a semantic model of the program that represents things that are declared with a name and hence can be referenced elsewhere in the code.

There are two exceptions to the general case. First, there are elements in the element model that are created for the convenience of various kinds of analysis but that do not have any corresponding declaration within the source code. Such elements are marked as being synthetic. Examples of synthetic elements include

  • default constructors in classes that do not define any explicit constructors,
  • getters and setters that are induced by explicit field declarations,
  • fields that are induced by explicit declarations of getters and setters, and
  • functions representing the initialization expression for a variable.

Second, there are elements in the element model that do not have a name. These correspond to unnamed functions and exist in order to more accurately represent the semantic structure of the program.

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

Implementers

Constructors

Element()

Properties

children → List<Element>
A list of this element's children.
no setter
context → AnalysisContext
The analysis context in which this element is defined.
no setter
declaration → Element?
The declaration of this element.
no setter
displayName → String
The display name of this element, possibly the empty string if the element does not have a name.
no setter
documentationComment → String?
The content of the documentation comment (including delimiters) for this element, or null if this element does not or cannot have documentation.
no setter
enclosingElement → Element?
The element that either physically or logically encloses this element.
no setter
enclosingElement3 → Element?
The element that either physically or logically encloses this element.
no setter
hasAlwaysThrows → bool
Whether the element has an annotation of the form @alwaysThrows.
no setter
hasDeprecated → bool
Whether the element has an annotation of the form @deprecated or @Deprecated('..').
no setter
hasDoNotStore → bool
Whether the element has an annotation of the form @doNotStore.
no setter
hasDoNotSubmit → bool
Whether the element has an annotation of the form @doNotSubmit.
no setter
hasFactory → bool
Whether the element has an annotation of the form @factory.
no setter
hashCode → int
The hash code for this object.
no setterinherited
hasImmutable → bool
Whether the element has an annotation of the form @immutable.
no setter
hasInternal → bool
Whether the element has an annotation of the form @internal.
no setter
hasIsTest → bool
Whether the element has an annotation of the form @isTest.
no setter
hasIsTestGroup → bool
Whether the element has an annotation of the form @isTestGroup.
no setter
hasJS → bool
Whether the element has an annotation of the form @JS(..).
no setter
hasLiteral → bool
Whether the element has an annotation of the form @literal.
no setter
hasMustBeConst → bool
Whether the element has an annotation of the form @mustBeConst.
no setter
hasMustBeOverridden → bool
Whether the element has an annotation of the form @mustBeOverridden.
no setter
hasMustCallSuper → bool
Whether the element has an annotation of the form @mustCallSuper.
no setter
hasNonVirtual → bool
Whether the element has an annotation of the form @nonVirtual.
no setter
hasOptionalTypeArgs → bool
Whether the element has an annotation of the form @optionalTypeArgs.
no setter
hasOverride → bool
Whether the element has an annotation of the form @override.
no setter
hasProtected → bool
Whether the element has an annotation of the form @protected.
no setter
hasRedeclare → bool
Whether the element has an annotation of the form @redeclare.
no setter
hasReopen → bool
Whether the element has an annotation of the form @reopen.
no setter
hasRequired → bool
Whether the element has an annotation of the form @required.
no setter
hasSealed → bool
Whether the element has an annotation of the form @sealed.
no setter
hasUseResult → bool
Whether the element has an annotation of the form @useResult or @UseResult('..').
no setter
hasVisibleForOverriding → bool
Whether the element has an annotation of the form @visibleForOverriding.
no setter
hasVisibleForTemplate → bool
Whether the element has an annotation of the form @visibleForTemplate.
no setter
hasVisibleForTesting → bool
Whether the element has an annotation of the form @visibleForTesting.
no setter
hasVisibleOutsideTemplate → bool
Whether the element has an annotation of the form @visibleOutsideTemplate.
no setter
id → int
The unique integer identifier of this element.
no setter
isPrivate → bool
Whether the element is private.
no setter
isPublic → bool
Whether the element is public.
no setter
isSynthetic → bool
Whether the element is synthetic.
no setter
kind → ElementKind
The kind of element that this is.
no setter
library → LibraryElement?
Library that contains this element.
no setter
librarySource → Source?
If this target is associated with a library, return the source of the library's defining compilation unit; otherwise return null.
no setterinherited
location → ElementLocation?
The location of this element in the element model.
no setter
metadata → List<ElementAnnotation>
All of the metadata associated with this element.
no setter
name → String?
The name of this element, or null if this element does not have a name.
no setter
nameLength → int
The length of the name of this element in the file that contains the declaration of this element, or 0 if this element does not have a name.
no setter
nameOffset → int
The offset of the name of this element in the file that contains the declaration of this element, or -1 if this element is synthetic, does not have a name, or otherwise does not have an offset.
no setter
nonSynthetic → Element
The non-synthetic element that caused this element to be created.
no setter
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
session → AnalysisSession?
The analysis session in which this element is defined.
no setter
sinceSdkVersion → Version?
The version where this SDK API was added.
no setter
source → Source?
Return the source associated with this target, or null if this target is not associated with a source.
no setter

Methods

accept<T>(ElementVisitor<T> visitor) → T?
Uses the given visitor to visit this element.
getDisplayString({bool withNullability = true, bool multiline = false}) → String
Returns the presentation of this element as it should appear when presented to users.
getExtendedDisplayName(String? shortName) → String
Returns a display name for the given element that includes the path to the compilation unit in which the type is defined. If shortName is null then displayName will be used as the name of this element. Otherwise the provided name will be used.
isAccessibleIn(LibraryElement library) → bool
Whether the element, assuming that it is within scope, is accessible to code in the given library.
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
thisOrAncestorMatching<E extends Element>(bool predicate(Element)) → E?
Returns either this element or the most immediate ancestor of this element for which the predicate returns true, or null if there is no such element.
thisOrAncestorMatching3<E extends Element>(bool predicate(Element)) → E?
Returns either this element or the most immediate ancestor of this element for which the predicate returns true, or null if there is no such element.
thisOrAncestorOfType<E extends Element>() → E?
Returns either this element or the most immediate ancestor of this element that has the given type, or null if there is no such element.
thisOrAncestorOfType3<E extends Element>() → E?
Returns either this element or the most immediate ancestor of this element that has the given type, or null if there is no such element.
toString() → String
A string representation of this object.
inherited
visitChildren(ElementVisitor visitor) → void
Uses the given visitor to visit all of the children of this element. There is no guarantee of the order in which the children will be visited.

Operators

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