Struct Provenance 

pub struct Provenance {
    pub steps: Vec<ProvenanceStep>,
}

Ordered evidence explaining how a runtime value was produced. 说明某个运行期取值如何产生的有序证据。

Fields

steps: Vec<ProvenanceStep>

Observations in the order they occurred. 按发生顺序排列的观测步骤。

Implementations

impl Provenance

pub fn push( self, node: NodeId, object: &'static str, operation: &'static str, value: impl Into<String>, ) -> Provenance

Append one observation and return the extended chain. 追加一条观测并返回扩展后的证据链。

Trait Implementations

impl Clone for Provenance

fn clone(&self) -> Provenance

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Provenance

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

Formats the value using the given formatter.

impl Default for Provenance

fn default() -> Provenance

Returns the “default value” for a type.

impl Eq for Provenance

impl PartialEq for Provenance

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Provenance