A formal parameter with a default value.
There are two kinds of parameters that are both represented by this class: named formal parameters and positional formal parameters.
defaultFormalParameter ::= NormalFormalParameter ('=' Expression)?
defaultNamedParameter ::= NormalFormalParameter (':' Expression)?
- Implemented types
Properties
- beginToken → Token
-
The first token included in this node's source range.
no setterinherited
-
childEntities
→ Iterable<
SyntacticEntity> -
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
- covariantKeyword → Token?
-
The
covariant
keyword, ornull
if the keyword isn't used.no setterinherited - declaredElement → ParameterElement?
-
The element representing this parameter, or
null
if this parameter hasn't been resolved.no setterinherited - declaredFragment → FormalParameterFragment?
-
The fragment declared by this parameter.
no setterinherited
- defaultValue → Expression?
-
The expression computing the default value for the parameter, or
null
if there's no default value.no setter - end → int
-
The offset of the character immediately following the last character of
this node's source range.
no setterinherited
- endToken → Token
-
The last token included in this node's source range.
no setterinherited
- hashCode → int
-
The hash code for this object.
no setterinherited
- isConst → bool
-
Whether this parameter was declared with the 'const' modifier.
no setterinherited
- isExplicitlyTyped → bool
-
Whether the parameter has an explicit type.
no setterinherited
- isFinal → bool
-
Whether this parameter was declared with the 'final' modifier.
no setterinherited
- isNamed → bool
-
Whether this parameter is a named parameter.
no setterinherited
- isOptional → bool
-
Whether this parameter is an optional parameter.
no setterinherited
- isOptionalNamed → bool
-
Whether this parameter is both an optional and named parameter.
no setterinherited
- isOptionalPositional → bool
-
Whether this parameter is both an optional and positional
parameter.
no setterinherited
- isPositional → bool
-
Whether this parameter is a positional parameter.
no setterinherited
- isRequired → bool
-
Whether this parameter is a required parameter.
no setterinherited
- isRequiredNamed → bool
-
Whether this parameter is both a required and named parameter.
no setterinherited
- isRequiredPositional → bool
-
Whether this parameter is both a required and positional parameter.
no setterinherited
- isSynthetic → bool
-
Whether this node is a synthetic node.
no setterinherited
- length → int
-
Return the number of characters in the syntactic entity's source range.
no setterinherited
-
metadata
→ NodeList<
Annotation> -
The annotations associated with this parameter.
no setterinherited
- name → Token?
-
The name of the parameter being declared, or
null
if the parameter doesn't have a name, such as when it's part of a generic function type.no setterinherited - offset → int
-
Return the offset from the beginning of the file to the first character in
the syntactic entity.
no setterinherited
- parameter → NormalFormalParameter
-
The formal parameter with which the default value is associated.
no setter
- parent → AstNode?
-
Returns this node's parent node, or
null
if this node is the root of an AST structure.no setterinherited - requiredKeyword → Token?
-
The
required
keyword, ornull
if the keyword isn't used.no setterinherited - root → AstNode
-
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
- separator → Token?
-
The token separating the parameter from the default value, or
null
if there's no default value.no setter
Methods
-
accept<
E> (AstVisitor< E> visitor) → E? -
Use the given
visitor
to visit this node.inherited -
findPrevious(
Token target) → Token? -
Returns the token before
target
, ornull
if it can't be found.inherited -
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
thisOrAncestorMatching<
E extends AstNode> (bool predicate(AstNode)) → E? -
Returns either this node or the most immediate ancestor of this node for
which the
predicate
returnstrue
, ornull
if there's no such node.inherited -
thisOrAncestorOfType<
E extends AstNode> () → E? -
Returns either this node or the most immediate ancestor of this node that
has the given type, or
null
if there's no such node.inherited -
toSource(
) → String -
Returns 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