Class ExtractLiteralOperand

java.lang.Object

org.ek9lang.compiler.support.ExtractLiteralOperand

All Implemented Interfaces:

Function<EK9Parser.ExpressionContext, EK9Parser.LiteralContext>

public final class ExtractLiteralOperand
extends Object
implements Function<EK9Parser.ExpressionContext, EK9Parser.LiteralContext>

Extracts the literal an expression resolves to, or null if it is not a (possibly negated) literal. A bare literal is returned directly; a unary-minus applied to a literal unwraps to that inner literal so that '-1' is recognised as a constant operand.

Shared by the constant-comparison and constant-coalescing checks, where the subtle unary-minus unwrap rule must stay in one place rather than being fixed in one copy and missed in another.

Constructor Summary

Constructors

Constructor	Description
ExtractLiteralOperand()

Method Summary

Modifier and Type	Method	Description
EK9Parser.LiteralContext	apply(EK9Parser.ExpressionContext expr)

Methods inherited from class Object

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

Methods inherited from interface Function

andThen, compose

Constructor Details

ExtractLiteralOperand

public ExtractLiteralOperand()

Method Details

apply

public EK9Parser.LiteralContext apply(EK9Parser.ExpressionContext expr)

Specified by:

apply in interface Function<EK9Parser.ExpressionContext, EK9Parser.LiteralContext>