/**
 * Renderer AST 的工具库
 *
 * 这里维护操作 Renderer AST 的工具，尤其是方便创建 AST。
 * 例如：new AssignmentStatement(new Identifier('html'), new Literal('foo')) 可以简写为 ASSIGN(I('html), L('foo))
 */
import { SyntaxNode, Block, MapLiteral, UnaryOperator, UnaryExpression, NewExpression, VariableDefinition, ReturnStatement, BinaryOperator, If, Null, Undefined, AssignmentStatement, Statement, Expression, Identifier, ExpressionStatement, BinaryExpression, Literal, TryStatement, ConditionalExpression, ArrayLiteral } from './renderer-ast-dfn';
export declare function createHTMLLiteralAppend(html: string): ExpressionStatement;
export declare function createHTMLExpressionAppend(expr: Expression): ExpressionStatement;
export declare function createDefaultValue(expr: Expression, value: Expression): Statement;
export declare function createIfNotNull(expr: Expression, statements: Statement[]): If;
export declare function createIfNull(expr: Expression, statements: Statement[]): If;
export declare function createIfStrictEqual(lhs: Expression, rhs: Expression, statements: Statement[]): If;
export declare function createTryStatement(block: Statement[], param: Identifier, body: Statement[]): TryStatement;
export declare function createDefineWithDefaultValue(varName: string, value: Expression, defaultValue: Expression): VariableDefinition;
export declare function L(val: any): Literal;
export declare function I(name: string): Identifier;
export declare const NULL: Null;
export declare const UNDEFINED: Undefined;
export declare const CTX_DATA: BinaryExpression;
export declare function CONDITIONAL(cond: Expression, thenExpr: Expression, elseExpr: Expression): ConditionalExpression;
export declare function BINARY(lhs: Expression, op: BinaryOperator, rhs: Expression): BinaryExpression;
export declare function UNARY(op: UnaryOperator, val: Expression): UnaryExpression;
export declare function ASSIGN(lhs: Expression, rhs: Expression): AssignmentStatement;
export declare function RETURN(val: Expression): ReturnStatement;
export declare function STATEMENT(expr: Expression): ExpressionStatement;
export declare function DEF(name: string, expr?: Expression): VariableDefinition;
export declare function NEW(name: Expression, args: Expression[]): NewExpression;
export declare const EMPTY_MAP: MapLiteral;
export declare const EMPTY_ARRAY: ArrayLiteral;
export declare function isBlock(node: any): node is Block;
export declare function isSyntaxNode(node: any): node is SyntaxNode;
export declare function isExpressionStatement(node: SyntaxNode): node is ExpressionStatement;
export declare function isBinaryExpression(node: SyntaxNode): node is BinaryExpression;
export declare function isIdentifier(node: SyntaxNode): node is Identifier;
export declare function isLiteral(node: SyntaxNode): node is Literal;