a2ui-core/dev.ynagai.a2ui.core.surface/EvaluationScope/Collection

Collection

data class Collection(val parent: EvaluationScope, val path: JsonPointer, val index: Int) : EvaluationScope

One item of a list template, nested inside parent.

base is the item's own pointer — the template's bound path extended by index — so a relative binding of name inside a template over /employees reads /employees/0/name for the first instance.

Constructors

Collection

constructor(parent: EvaluationScope, path: JsonPointer, index: Int)

Properties

base

open override val base: JsonPointer

The pointer that a relative binding in this scope is measured from.

index

open override val index: Int

The 0-based index of the item being iterated, or null outside a list template.

parent

val parent: EvaluationScope

path

val path: JsonPointer

Functions

currentIndex

fun EvaluationScope.currentIndex(): Int?

The index @index reads here, or null when this scope is not inside a list template.

iterate

fun EvaluationScope.iterate(path: JsonPointer, index: Int): EvaluationScope.Collection

The scope for item index of a template bound to path, nested inside this scope.

rebase

fun EvaluationScope.rebase(pointer: JsonPointer): JsonPointer

pointer rebased on this scope: absolute pointers unchanged, relative ones measured from EvaluationScope.base.

resolve

fun EvaluationScope.resolve(dataModel: JsonElement, pointer: JsonPointer): JsonElement?

The value pointer addresses in dataModel once rebased on this scope, or null when absent.