Struct FoundationFrame 

pub struct FoundationFrame {
    pub previous_active: String,
    pub snapshot: Vec<(String, Option<Op>)>,
    pub previous_active_implementations: Vec<(String, Option<ActiveImplementationDescriptor>)>,
    pub previous_strict_carrier: bool,
    pub previous_carrier: Option<Vec<f64>>,
    pub previous_carrier_label: Option<String>,
}

Stack frame pushed when entering a foundation scope. Stores the previous active foundation name plus a snapshot of any operators the foundation rebinds, so exit_foundation can restore the prior semantics exactly. snapshot maps operator name -> previous Op (None if the op did not exist before). Carrier snapshot fields (issue #97 Section 2) preserve the strict-carrier state of the enclosing scope so nested (with-foundation ...) bodies roll back cleanly when their inner scope exits.

Fields

previous_active: String

snapshot: Vec<(String, Option<Op>)>

previous_active_implementations: Vec<(String, Option<ActiveImplementationDescriptor>)>

previous_strict_carrier: bool

previous_carrier: Option<Vec<f64>>

previous_carrier_label: Option<String>

Trait Implementations

impl Clone for FoundationFrame

fn clone(&self) -> FoundationFrame

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for FoundationFrame

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

Formats the value using the given formatter.