/**
 * Some util functions to generate a AST node for transform
 */
import { ClassDeclaration, DecoratorNode, ImportStatement, NamedTypeNode, NamespaceDeclaration, Range, Statement, TypeName } from "assemblyscript";
/**
 * A helper for generate NamedTypeNode which may be namespaced type
 * @param range
 * @param typeName
 * @param isNullable
 * @returns
 */
export declare function genNamedTypeNode(range: Range, typeName: string, isNullable?: boolean): NamedTypeNode;
/**
 * Add an interface to be implemented to a class.
 * @param node class needed to implement a interface
 * @param interfaceName The interface path
 * @returns node
 */
export declare function addImplement(node: ClassDeclaration, interfaceName: string): ClassDeclaration;
/**
 * Add interface list to be implemented to a class.
 * @param node class needed to implement a interface
 * @param interfaceNames The interface path list
 * @returns node
 */
export declare function addImplements(node: ClassDeclaration, interfaceNames: string[]): ClassDeclaration;
/**
 * append `@serialize` to a declaration
 * @param range node range
 * @param decl declaration node
 */
export declare function addSerializeDecorator(decl: {
    range: Range;
    decorators: DecoratorNode[] | null;
}): void;
/**
 * append `@deserialize` to a declaration
 * @param range node range
 * @param decl declaration node
 */
export declare function addDeserializeDecorator(decl: {
    range: Range;
    decorators: DecoratorNode[] | null;
}): void;
/**
 * append a decorator to a declaration
 * @param range node range
 * @param decl declaration node pending to be decorated
 */
export declare function addDecorator(decl: {
    decorators: DecoratorNode[] | null;
}, decorator: DecoratorNode): void;
/**
 * genTypeName create type name for namespaced type such as `__lang.AccountId`.
 * @param name type name
 * @param range
 * @returns typeName ast node
 */
export declare function genTypeName(name: string, range: Range): TypeName;
/**
 * create a namespace
 * @param range related code range
 * @param members all stmts in namespace
 */
export declare function genNamespcae(range: Range, namepsace: string, members: Statement[]): NamespaceDeclaration;
/**
 * Genetate an import statement, e.g.`import * as __lang from "ask-lang"`
 * @param namespace imported namespaced
 * @param path module path
 * @param range
 * @returns ImportStatement
 */
export declare function genImportStatement(namespace: string, path: string, range: Range): ImportStatement;