Struct Variables 

pub struct Variables { /* private fields */ }

The mutable variable bag for one flow run.

Implementations

impl Variables

pub fn new() -> Self

An empty state ({}).

pub fn from_value(value: Value) -> Self

Wrap an existing JSON object as state. A non-object is replaced by {}.

pub fn seed_from_inputs( inputs: &BTreeMap<String, InputSpec>, args: &Value, ) -> (Self, Vec<String>)

Seed state from an entry node’s declared inputs and the caller-supplied argument object. Required inputs missing from args and lacking a default are reported by name (so the caller can reject the invocation); present values and defaults are written, and _inputs is set to the seeded map.

pub fn as_value(&self) -> &Value

Borrow the underlying JSON object.

pub fn into_value(self) -> Value

Consume and return the underlying JSON object.

pub fn get(&self, path: &str) -> Option<&Value>

Look up a dotted path within the state.

pub fn set(&mut self, name: &str, value: Value)

Set a top-level variable. (Nested assignment uses Self::set_path.)

pub fn set_last(&mut self, value: Value)

Set the reserved _last edge payload (the next node’s input).

pub fn set_path(&mut self, path: &str, value: Value)

Set a value at a dotted path, creating intermediate objects as needed. A leading/empty segment is ignored; an empty path is a no-op.

Trait Implementations

impl Clone for Variables

fn clone(&self) -> Variables

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Variables

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

Formats the value using the given formatter.

impl Default for Variables

fn default() -> Variables

Returns the “default value” for a type.

impl PartialEq for Variables

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Variables