Struct dfir_lang::graph::ops::OperatorWriteOutput

#[non_exhaustive]
pub struct OperatorWriteOutput {
    pub write_prologue: TokenStream,
    pub write_iterator: TokenStream,
    pub write_iterator_after: TokenStream,
}

The code generated and returned by a OperatorConstraints::write_fn.

Fields (Non-exhaustive)

Non-exhaustive structs could have additional fields added in future. Therefore, non-exhaustive structs cannot be constructed in external crates using the traditional Struct { .. } syntax; cannot be matched against without a wildcard ..; and struct update syntax will not work.

write_prologue: TokenStream

Code which runs once outside the subgraph to set up any external stuff like state API stuff, external chanels, network connections, etc.

write_iterator: TokenStream

Iterator (or pusherator) code inside the subgraphs. The code for each operator is emitted in order.

Emitted code should assign to [WriteContextArgs.ident] and use [WriteIteratorArgs.inputs] (pull iterators) or [WriteIteratorArgs.outputs] (pusherators).

write_iterator_after: TokenStream

Code which runs after iterators have been run. Mainly for flushing IO.

Trait Implementations

impl Default for OperatorWriteOutput

fn default() -> OperatorWriteOutput

Returns the “default value” for a type.