TypeDeclarationExtension extension

Extension providing type casting and declaration resolution for TypeDeclaration.

Adds convenience methods for safely casting to specific declaration types and finding the most specific declaration type.

{@template type_declaration_extension_features}

Key Features

  • Safe type casting methods
  • Declaration type resolution
  • Null-safe operations
  • Covers all TypeDeclaration variants

Example Usage

TypeDeclaration decl = getSomeDeclaration();

// Safe casting
final classDecl = decl.asClass();
if (classDecl != null) {
  print('Found class: ${classDecl.getName()}');
}

// Declaration resolution
final sourceDecl = decl.getDeclaration();

{@endtemplate}

on

Methods

asClass() → ClassDeclaration?

Available on TypeDeclaration, provided by the TypeDeclarationExtension extension

Safely casts to ClassDeclaration if possible.
asEnum() → EnumDeclaration?

Available on TypeDeclaration, provided by the TypeDeclarationExtension extension

Safely casts to EnumDeclaration if possible.
asMixin() → MixinDeclaration?

Available on TypeDeclaration, provided by the TypeDeclarationExtension extension

Safely casts to MixinDeclaration if possible.
asRecord() → RecordDeclaration?

Available on TypeDeclaration, provided by the TypeDeclarationExtension extension

Safely casts to RecordDeclaration if possible.
asTypedef() → TypedefDeclaration?

Available on TypeDeclaration, provided by the TypeDeclarationExtension extension

Safely casts to TypedefDeclaration if possible.
asTypeVariable() → TypeVariableDeclaration?

Available on TypeDeclaration, provided by the TypeDeclarationExtension extension

Safely casts to TypeVariableDeclaration if possible.
getDeclaration() → SourceDeclaration?

Available on TypeDeclaration, provided by the TypeDeclarationExtension extension

Resolves the most specific declaration type.