NullConstant (lisa-sdk 0.1 API)

java.lang.Object
- it.unive.lisa.symbolic.SymbolicExpression
- - it.unive.lisa.symbolic.value.ValueExpression
  - - it.unive.lisa.symbolic.value.Constant
    - - it.unive.lisa.symbolic.value.NullConstant

All Implemented Interfaces:

ScopedObject<SymbolicExpression>
```
public class NullConstant
extends Constant
```
A Constant that represent the null value.

- Constructor Summary
  
  Constructors
  Constructor Description
  
  NullConstant(CodeLocation location)
  Builds a null constant.
- Method Summary
  
  All Methods Instance Methods Concrete Methods
  Modifier and Type Method Description
  
  boolean equals(java.lang.Object obj)
  
  int hashCode()
  
  java.lang.String toString()
  - Methods inherited from class it.unive.lisa.symbolic.value.Constant
    accept, getValue, mightNeedRewriting, popScope, pushScope
  - Methods inherited from class it.unive.lisa.symbolic.value.ValueExpression
    removeNegations
  - Methods inherited from class it.unive.lisa.symbolic.SymbolicExpression
    getCodeLocation, getStaticType
  - Methods inherited from class java.lang.Object
    clone, finalize, getClass, notify, notifyAll, wait, wait, wait

- Constructor Detail
  - NullConstant
```
public NullConstant(CodeLocation location)
```
    Builds a null constant.
    
    Parameters:
    
    location - the location where the expression is defined within the program
- Method Detail
  - hashCode
```
public int hashCode()
```
    Overrides:
    
    hashCode in class Constant
  - equals
```
public boolean equals(java.lang.Object obj)
```
    Overrides:
    
    equals in class Constant
  - toString
```
public java.lang.String toString()
```
    Overrides:
    
    toString in class Constant