LambdaExpressionNestedState (Apache Tomcat 10.1.56 API Documentation)

java.lang.Object
- org.apache.el.lang.LambdaExpressionNestedState

```
public final class LambdaExpressionNestedState
extends java.lang.Object
```
Stores the state required for correct evaluation of lambda expressions. Lambda expressions may be nested. Correct evaluation requires knowledge not just of the current lambda expression, but also of any nested and nesting expressions.
The sets of nodes for parsed expressions are cached and, as a result, a set of nodes may be being used by multiple concurrent threads. This means any state relating to evaluation cannot be stored in the nodes. State is therefore stored in the EvaluationContext which is created, used for a single evaluation and then discarded.

Constructor Summary

Constructors
Constructor Description

LambdaExpressionNestedState()
Default constructor.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`boolean`	`getHasFormalParameters()`	Returns whether the current lambda expression has formal parameters.
`int`	`getNestingCount()`	Returns the current nesting count.
`void`	`incrementNestingCount()`	Increments the nesting count for nested lambda expressions.
`void`	`setHasFormalParameters()`	Marks that the current lambda expression has formal parameters.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - LambdaExpressionNestedState
```
public LambdaExpressionNestedState()
```
    Default constructor.
- Method Detail
  - incrementNestingCount
```
public void incrementNestingCount()
```
    Increments the nesting count for nested lambda expressions.
  - getNestingCount
```
public int getNestingCount()
```
    Returns the current nesting count.
    
    Returns:
    
    the nesting count
  - setHasFormalParameters
```
public void setHasFormalParameters()
```
    Marks that the current lambda expression has formal parameters.
  - getHasFormalParameters
```
public boolean getHasFormalParameters()
```
    Returns whether the current lambda expression has formal parameters.
    
    Returns:
    
    true if the lambda has formal parameters