ClassWrapperTree

com.jsmacrosce.jsmacros.core.helper.ClassWrapperTree

Registry that dispatches values to wrappers according to their runtime class.
Core's helper registry uses this tree to select helpers; scripts can also request wrapping through JavaUtils.getHelperFromRaw(raw).

const raw = Chat.createTextHelperFromString("hello").getRaw();  
const helper = JavaUtils.getHelperFromRaw(raw);  
if (helper !== null) print(helper);

Type Parameters

• K: the input type accepted by registered wrappers
• V: the wrapper result type

Constructors

new ClassWrapperTree

new ClassWrapperTree(Class<K> baseType, Function<K, V> baseTypeWrapper)#

Initializes the fallback wrapper used when no registered child type matches.

Parameters:

• baseType: type handled by this tree's fallback wrapper
• baseTypeWrapper: fallback wrapper function

Methods

getSubtypeWrapper

getSubtypeWrapper(Class<T extends K> type): ClassWrapperTree<T extends K, U extends V>#

Searches the first assignable child recursively, or returns this node if none matches. The fallback also applies when type is unrelated to this node's registered type.

Parameters:

• type: class to look up

Type Parameters:

• T: queried type
• U: wrapper result type

Returns: the first matching descendant, or this node as the fallback

registerType

registerType(Class<T extends K> type, Function<T extends K, U extends V> wrapper): void#

Registers or replaces a wrapper and places assignable registered types beneath it.

Parameters:

• type: input class to register
• wrapper: function applied to matching values

Type Parameters:

• T: registered input type
• U: result type produced by the wrapper

wrap

wrap(T extends K inputType): V#

Applies the first matching registered wrapper to the input's runtime class.

Parameters:

• inputType: value to wrap; must be non-null

Type Parameters:

• T: input type

Returns: the selected wrapper's result, which may be null