Package dev.frostlake.executor.expressions

Class BinaryOperationExpression

java.lang.Object

dev.frostlake.executor.expressions.BinaryOperationExpression

All Implemented Interfaces:

Expression

public class BinaryOperationExpression
extends Object
implements Expression

Represents a binary operation (e.g., a + b, x > 5, name = 'Alice')

Constructor Summary

Constructors

Constructor	Description
BinaryOperationExpression(Expression left, BinaryOperator operator, Expression right)
BinaryOperationExpression(Expression left, BinaryOperator operator, Expression right, Expression escape)

Method Summary

Modifier and Type	Method	Description
<T> T	accept(ExpressionVisitor<T> visitor)	Accept a visitor for the visitor pattern
Expression	getEscape()	The LIKE/ILIKE ESCAPE character expression, or null if the query had no ESCAPE clause.
Expression	getLeft()
BinaryOperator	getOperator()
SourcePosition	getPosition()	Where the OPERATOR token sits — not the expression's start and not the enclosing select item's.
Expression	getRight()
boolean	isSimpleCaseTest()	Whether this is the equality a simple CASE builds — CASE x WHEN v tests x = v, the subject on the left.
void	markSimpleCaseTest()	Mark this equality as a simple CASE's WHEN test — see isSimpleCaseTest().
void	setPosition(SourcePosition position)
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Details

BinaryOperationExpression

public BinaryOperationExpression(Expression left,
 BinaryOperator operator,
 Expression right)

BinaryOperationExpression

public BinaryOperationExpression(Expression left,
 BinaryOperator operator,
 Expression right,
 Expression escape)

Method Details

getPosition

public SourcePosition getPosition()

Where the OPERATOR token sits — not the expression's start and not the enclosing select item's. An argument-type refusal is anchored here, which is what Snowflake points at: over SELECT bn || s AS c FROM t the refusal reads position 10, the offset of ||, and over SELECT n AS a, bn || s AS c FROM t it reads 18 — it tracks the operator through a longer prefix, a parenthesis, an enclosing call and a second select item alike (live-verified).

Returns:

the operator's position, or null where the expression was not built from a parse tree

setPosition

public void setPosition(SourcePosition position)

isSimpleCaseTest

public boolean isSimpleCaseTest()

Whether this is the equality a simple CASE builds — CASE x WHEN v tests x = v, the subject on the left. Two collations that disagree there are named subject first, where a written comparison names its right side first (live-verified).

Returns:

true for a simple CASE's WHEN test

markSimpleCaseTest

public void markSimpleCaseTest()

Mark this equality as a simple CASE's WHEN test — see isSimpleCaseTest().

getLeft

public Expression getLeft()

getRight

public Expression getRight()

getOperator

public BinaryOperator getOperator()

getEscape

public Expression getEscape()

The LIKE/ILIKE ESCAPE character expression, or null if the query had no ESCAPE clause.

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