Package dev.frostlake.functions

Class HigherOrderFunctionNames

java.lang.Object

dev.frostlake.functions.HigherOrderFunctionNames

public final class HigherOrderFunctionNames
extends Object

The higher-order functions — the ones whose last argument is a lambda, so the argument must NOT be pre-evaluated. ExpressionEvaluatorVisitor applies the lambda per array element instead of looking the name up in the FunctionRegistry maps, which is why these names were invisible to SHOW FUNCTIONS while being perfectly dispatchable.

This set is load-bearing for dispatch: the visitor tests membership here to decide whether to take the higher-order path, and SHOW FUNCTIONS enumerates the same set through FunctionRegistry.allDispatchableNames(), so the listing cannot drift from the dispatch again.

Snowflake lists all three (SHOW BUILTIN FUNCTIONS LIKE 'TRANSFORM' returns TRANSFORM(ARRAY, FUNCTION(VARIANT)) RETURN ARRAY, is_builtin = 'Y').

Method Summary

Modifier and Type	Method	Description
static boolean	contains(String name)	Whether this name takes a lambda argument and is evaluated by the higher-order path.
static SortedSet<String>	names()	Every higher-order function name, upper-cased and sorted.

Methods inherited from class java.lang.Object

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

Method Details

contains

public static boolean contains(String name)

Whether this name takes a lambda argument and is evaluated by the higher-order path.

names

public static SortedSet<String> names()

Every higher-order function name, upper-cased and sorted.