Class RuntimeCollectionTransform

java.lang.Object

io.github.protasm.jvmud.compiler.runtime.RuntimeCollectionTransform

public final class RuntimeCollectionTransform
extends Object

Runtime helpers for LPC collection callbacks.

Method Summary

Modifier and Type	Method	Description
static Object	filter(Object source, RuntimeCallable callback, Object[] extras, RuntimeContext runtime)	Applies LPC filter() semantics to arrays, strings, and mappings.
static Object	map(Object source, RuntimeCallable callback, Object[] extras, RuntimeContext runtime)	Applies LPC map() semantics to arrays, strings, and mappings.
static Object	sortArray(Object source, RuntimeCallable callback, Object[] extras, RuntimeContext runtime)	Applies callable-form LPC sort_array() semantics.

Methods inherited from class Object

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

Method Details

filter

public static Object filter(Object source,
 RuntimeCallable callback,
 Object[] extras,
 RuntimeContext runtime)

Applies LPC filter() semantics to arrays, strings, and mappings.

Mappings are filtered as key/value pairs and return a mapping. Other iterable values keep the existing JVMud behavior: each item is passed as the first callback argument and matching items are returned as an array.

map

public static Object map(Object source,
 RuntimeCallable callback,
 Object[] extras,
 RuntimeContext runtime)

Applies LPC map() semantics to arrays, strings, and mappings.

Mappings are traversed as key/value pairs and return a mapping with the original keys and transformed values. Other iterable values return an array of callback results.

sortArray

public static Object sortArray(Object source,
 RuntimeCallable callback,
 Object[] extras,
 RuntimeContext runtime)

Applies callable-form LPC sort_array() semantics.

The callback receives the two candidate values as $1 and $2. Additional arguments are forwarded starting at $3. A truthy callback result swaps the two candidate values, matching the selection-sort behavior historically used by JVMud's compiler lowering for sort_array(values, (: ... :)).