Struct EachDirective 

pub struct EachDirective {
    pub path: String,
    pub as_: String,
}

Iteration directive on an Element: instantiate one element per row of a JSON array resolved from Spec::data.

At resolve time, the templated element is replaced by N clones with auto-suffixed IDs ({element_id}-0, {element_id}-1, …). The loop variable bound by as (default name "row") scopes $data paths starting with /{as}/... to the current iteration row.

Reserved names

The as field must NOT be one of ["data", "root", "_root", "_each", "this", "self"] — see SpecError::EachAsReservedName (validated by Spec::validate in Plan 04).

Wire format example

{
  "type": "Card",
  "$each": { "path": "/orders", "as": "order" },
  "props": { "title": { "$data": "/order/order_number" } }
}

Resource bounds

At Plan 01, the directive is inert — no resolver runs yet. A hard cap on expansion size is a follow-up concern; Phase 163 does not impose a fixed limit. Spec authors are responsible for bounding the resolved array.

Fields

path: String

JSONPath-style slash-separated path to a JSON array in Spec::data.

as_: String

Loop-variable name bound during expansion. Paths starting with /{as}/... in the templated element’s props resolve to the current row.

Trait Implementations

impl Clone for EachDirective

fn clone(&self) -> EachDirective

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for EachDirective

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for EachDirective

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for EachDirective

fn eq(&self, other: &EachDirective) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for EachDirective

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for EachDirective