Represents a constructor of a Dart class, including its parameters,
modifiers (const, factory), and the ability to create new instances.
This abstraction allows runtime instantiation of classes using metadata.
Example
class Person {
final String name;
final int age;
Person(this.name, this.age);
}
final constructor = reflector.reflectConstructor(Person);
final person = constructor.newInstance({'name': 'Alice', 'age': 30});
print(person.name); // Alice
This is especially useful in frameworks like dependency injection, serialization, and code generation where runtime construction is needed.
- Inheritance
-
- Object
- BaseDeclaration
- Declaration
- EntityDeclaration
- SourceDeclaration
- MemberDeclaration
- ConstructorDeclaration
Properties
- hashCode → int
-
The hash code for this object.
no setterinherited
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
Methods
-
equalizedProperties(
) → List< Object?> -
Mixin-style contract for value-based equality,
hashCode, andtoString.inherited -
getAnnotations(
) → List< AnnotationDeclaration> -
Returns all annotations applied to this declaration in source code.
inherited
-
getDebugIdentifier(
) → String -
Returns the stable debug identifier for this entity.
inherited
-
getIsAbstract(
) → bool -
Indicates whether this member is declared as
abstract.inherited -
getIsConst(
) → bool -
Returns
trueif this constructor is declaredconst. -
getIsFactory(
) → bool -
Returns
trueif this constructor is afactory. -
getIsPublic(
) → bool -
Indicates whether this declaration is publicly visible.
inherited
-
getIsStatic(
) → bool -
Indicates whether this member is declared as
static.inherited -
getIsSynthetic(
) → bool -
Indicates whether this declaration is synthetic.
inherited
-
getName(
) → String -
Returns the simple (unqualified) name of this declaration.
inherited
-
getParameters(
) → List< ParameterDeclaration> - Returns all parameters required by this constructor.
-
getParentClass(
) → LinkDeclaration? -
Returns a link to the class that declares this member.
inherited
-
getSourceLocation(
) → Uri? -
Returns the URI pointing to the source location where this declaration
is defined.
inherited
-
getType(
) → Type -
Returns the Dart Type represented by this declaration.
inherited
-
newInstance<
T> (Map< String, dynamic> arguments) → T - Creates a new instance of the class using this constructor.
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
toJson(
) → Map< String, Object> -
Serializes this declaration into a JSON-compatible map.
inherited
-
toString(
) → String -
A string representation of this object.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited