ExtensionDeclaration class abstract

The declaration of an extension of a type.

extension ::= 'extension' SimpleIdentifier? TypeParameterList? 'on' TypeAnnotation ShowClause? HideClause? '{' ClassMember* '}'

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

Implemented types

Constructors

ExtensionDeclaration()

Properties

beginToken → Token
Return the first token included in this node's source range.
no setterinherited
childEntities → Iterable<SyntacticEntity>
Return an iterator that can be used to iterate through all the entities (either AST nodes or tokens) that make up the contents of this node, including doc comments but excluding other comments.
no setterinherited
declaredElement → ExtensionElement?
Return the element associated with this declaration, or null if either this node corresponds to a list of declarations or if the AST structure has not been resolved.
no setteroverride
declaredElement2 → ExtensionElement?
Return the element associated with this declaration, or null if either this node corresponds to a list of declarations or if the AST structure has not been resolved.
no setteroverride
documentationComment → Comment?
Return the documentation comment associated with this node, or null if this node does not have a documentation comment associated with it.
no setterinherited
end → int
Return the offset of the character immediately following the last character of this node's source range.
no setterinherited
endToken → Token
Return the last token included in this node's source range.
no setterinherited
extendedType → TypeAnnotation
Return the type that is being extended.
no setter
extensionKeyword → Token
Return the token representing the 'extension' keyword.
no setter
firstTokenAfterCommentAndMetadata → Token
Return the first token following the comment and metadata.
no setterinherited
hashCode → int
The hash code for this object.
no setterinherited
hideClause → HideClause?
Return the hide clause, or null if the extension does not have a hide clause.
no setter
isSynthetic → bool
Return true if this node is a synthetic node.
no setterinherited
leftBracket → Token
Return the left curly bracket.
no setter
length → int
Return the number of characters in the syntactic entity's source range.
no setterinherited
members → NodeList<ClassMember>
Return the members being added to the extended class.
no setter
metadata → NodeList<Annotation>
Return the annotations associated with this node.
no setterinherited
name → SimpleIdentifier?
Return the name of the extension, or null if the extension does not have a name.
no setter
name2 → Token?
Return the name of the extension, or null if the extension does not have a name.
no setter
offset → int
Return the offset from the beginning of the file to the first character in the syntactic entity.
no setterinherited
onKeyword → Token
Return the token representing the 'on' keyword.
no setter
parent → AstNode?
Return this node's parent node, or null if this node is the root of an AST structure.
no setterinherited
rightBracket → Token
Return the right curly bracket.
no setter
root → AstNode
Return the node at the root of this node's AST structure.
no setterinherited
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
showClause → ShowClause?
Return the show clause, or null if the extension does not have a show clause.
no setter
sortedCommentAndAnnotations → List<AstNode>
Return a list containing the comment and annotations associated with this node, sorted in lexical order.
no setterinherited
typeKeyword → Token?
Return the token representing the 'type' keyword.
no setter
typeParameters → TypeParameterList?
Return the type parameters for the extension, or null if the extension does not have any type parameters.
no setter

Methods

accept<E>(AstVisitor<E> visitor) → E?
Use the given visitor to visit this node.
inherited
findPrevious(Token target) → Token?
Return the token before target or null if it cannot be found.
inherited
getProperty<E>(String name) → E?
Return the value of the property with the given name, or null if this node does not have a property with the given name.
inherited
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
setProperty(String name, Object? value) → void
Set the value of the property with the given name to the given value. If the value is null, the property will effectively be removed.
inherited
thisOrAncestorMatching<E extends AstNode>(bool predicate(AstNode)) → E?
Return either this node or the most immediate ancestor of this node for which the predicate returns true, or null if there is no such node.
inherited
thisOrAncestorOfType<E extends AstNode>() → E?
Return either this node or the most immediate ancestor of this node that has the given type, or null if there is no such node.
inherited
toSource() → String
Return a textual description of this node in a form approximating valid source.
inherited
toString() → String
A string representation of this object.
inherited
visitChildren(AstVisitor visitor) → void
Use the given visitor to visit all of the children of this node.
inherited

Operators

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