Enum ClauseSource 

pub enum ClauseSource {
    Single(String),
    Parallel {
        mode: ZipMode,
        exprs: Vec<String>,
    },
}

A clause’s source of values. See Clause for context.

Variants

Single(String)

A single expression yielding Vec<Value>. Length of the value list matches the iteration cardinality. vars.len() is 1 for the single-var common case; vars.len() > 1 would mean destructure form (Layer 7b, gated on Value::Tuple).

Parallel

One expression per var; the sources zip in lockstep. vars.len() == exprs.len() ≥ 2. Length policy is controlled by ZipMode: strict (default) errors on mismatch, truncate cuts to the shortest, cycle repeats shorter sources to the longest.

Fields

mode: ZipMode

The length policy when the sources differ in length.

exprs: Vec<String>

One expression per element name, zipped in lockstep.

Trait Implementations

impl Clone for ClauseSource

fn clone(&self) -> ClauseSource

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ClauseSource

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for ClauseSource

fn deserialize<__D>( __deserializer: __D, ) -> Result<ClauseSource, <__D as Deserializer<'de>>::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for ClauseSource

impl PartialEq for ClauseSource

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for ClauseSource

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for ClauseSource