Enum ForSourceKind 

pub enum ForSourceKind {
    Producer(String),
    Comprehension(Comprehension),
    Derived {
        base: String,
        filter: Option<String>,
        order: Option<String>,
    },
}

The parsed form of a for source.

Variants

Producer(String)

A bare identifier naming a Streamer wire bound by a for expression elsewhere in scope.

Comprehension(Comprehension)

Comprehension text, parsed to the algebra AST.

Derived

A derivation of a bound producer: base where <pred>, base order <spec>, or both (SRD 113 §3.1). Resolved against the producer at compile time.

Fields

base: String

The producer wire the derivation starts from.

filter: Option<String>

The where predicate text, if any.

order: Option<String>

The order specification text, if any.

Trait Implementations

impl Clone for ForSourceKind

fn clone(&self) -> ForSourceKind

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ForSourceKind

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

Formats the value using the given formatter.