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package com.sun.source.tree;

import java.util.List;

A tree node for a lambda expression.
For example:

  ()->{}
  (List<String> ls)->ls.size()
  (x,y)-> { return x + y; }

/**
 * A tree node for a lambda expression.
 *
 * For example:
 * <pre>{@code
 *   ()->{}
 *   (List<String> ls)->ls.size()
 *   (x,y)-> { return x + y; }
 * }</pre>
 */
public interface LambdaExpressionTree extends ExpressionTree {

    
Lambda expressions come in two forms:

 expression lambdas, whose body is an expression, and
 statement lambdas, whose body is a block

/**
     * Lambda expressions come in two forms:
     * <ul>
     * <li> expression lambdas, whose body is an expression, and
     * <li> statement lambdas, whose body is a block
     * </ul>
     */
    public enum BodyKind {
        
enum constant for expression lambdas /** enum constant for expression lambdas */
        EXPRESSION,
        
enum constant for statement lambdas /** enum constant for statement lambdas */
        STATEMENT
    }

    
Returns the parameters of this lambda expression.
Returns:
the parameters/**
     * Returns the parameters of this lambda expression.
     * @return the parameters
     */
    List<? extends VariableTree> getParameters();

    
Returns the body of the lambda expression.
Returns:
the body/**
     * Returns the body of the lambda expression.
     * @return the body
     */
    Tree getBody();

    
Returns the kind of the body of the lambda expression.
Returns:
the kind of the body/**
     * Returns the kind of the body of the lambda expression.
     * @return the kind of the body
     */
    BodyKind getBodyKind();
}