Package dev.frostlake.executor.expressions

Class IsNullExpression

java.lang.Object

dev.frostlake.executor.expressions.IsNullExpression

All Implemented Interfaces:

Expression

public class IsNullExpression
extends Object
implements Expression

Represents an x IS NULL / x IS NOT NULL test.

Added during the ANTLR expression-AST migration: the grammar's IsNullExpr alternative had no corresponding node (the old string evaluator handled IS NULL inline).

Constructor Summary

Constructors

Constructor	Description
IsNullExpression(Expression operand, boolean not)

Method Summary

Modifier and Type	Method	Description
<T> T	accept(ExpressionVisitor<T> visitor)	Accept a visitor for the visitor pattern
Expression	getOperand()
boolean	isNot()
String	toString()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Details

IsNullExpression

public IsNullExpression(Expression operand,
 boolean not)

Method Details

getOperand

public Expression getOperand()

isNot

public boolean isNot()

accept

public <T> T accept(ExpressionVisitor<T> visitor)

Description copied from interface: Expression

Accept a visitor for the visitor pattern

Specified by:

accept in interface Expression

toString

public String toString()

Overrides:

toString in class Object