Struct StepGuardNode 

pub struct StepGuardNode {
    pub kind: String,
    pub name: String,
    pub target: String,
    pub binding: String,
    pub loc: Loc,
}

v2.83.0 — a governance application written INSIDE the step it governs: mandate SECCompliance on data, shield PatientShield on symptoms -> clean_data, ots Extract on raw.

README XV has always written the application in this position — a mandate next to the output: it constrains, scoped to THIS step’s generation — and the parser accepted the same form only at flow level, which is why README blocks 40–42 never compiled. The AST node is deliberately the same shape as the flow-level *ApplyStep family: one concept, two positions.

Fields

kind: String

Which primitive: "mandate" | "shield" | "ots".

name: String

The declared governor this guard names (e.g. SECCompliance).

target: String

What it is applied to — a binding or a call expression, verbatim (data, ContractDrafter(terms)). Empty when no on clause.

binding: String

The binding the guarded result flows into (-> clean_data). Empty when absent.

loc: Loc

Trait Implementations

impl Debug for StepGuardNode

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

Formats the value using the given formatter.