Enum ParamExpr 

pub enum ParamExpr {
    Literal(Value),
    Variable(String),
    PreviousResult(String),
    Computed(ComputeRule),
}

Parameter expression — how to compute a parameter value

Variants

Literal(Value)

A fixed literal value

Variable(String)

A variable extracted from user input

PreviousResult(String)

Result from a previous step

Computed(ComputeRule)

A computed transformation

Trait Implementations

impl Clone for ParamExpr

fn clone(&self) -> ParamExpr

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ParamExpr

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for ParamExpr

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for ParamExpr

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

where __S: Serializer,

Serialize this value into the given Serde serializer.