Struct StringParser 

pub struct StringParser;

Identity parser: returns the input string unchanged.

Implementations

impl StringParser

pub fn new() -> Self

Construct a StringParser.

Trait Implementations

impl Clone for StringParser

fn clone(&self) -> StringParser

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for StringParser

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

Formats the value using the given formatter.

impl Default for StringParser

fn default() -> StringParser

Returns the “default value” for a type.

impl OutputParser<String> for StringParser

fn parse(&self, text: &str) -> Result<String>

Attempt to parse the LLM output.

fn format_instructions(&self) -> Option<String>

Optional human-readable instructions to embed in a prompt to tell the LLM how to format its output.

impl Runnable<String, String> for StringParser

fn invoke<'life0, 'async_trait>( &'life0 self, input: String, __arg2: RunnableConfig, ) -> Pin<Box<dyn Future<Output = Result<String>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait,

One-shot invocation. The hot path.

fn name(&self) -> &str

Friendly name for telemetry / introspection.

fn batch<'life0, 'async_trait>( &'life0 self, inputs: Vec<I>, config: RunnableConfig, ) -> Pin<Box<dyn Future<Output = Result<Vec<O>>> + Send + 'async_trait>>

where I: 'static, O: 'static, Self: Sized + Sync + 'async_trait, 'life0: 'async_trait,

Run multiple inputs in parallel. Defaults to buffer_unordered honouring config.max_concurrency.

fn stream<'life0, 'async_trait>( &'life0 self, input: I, config: RunnableConfig, ) -> Pin<Box<dyn Future<Output = Result<RunnableStream<O>>> + Send + 'async_trait>>

where Self: Sized + Sync + 'async_trait, 'life0: 'async_trait,

Stream the final output (chunks of O). Default emits one item via invoke — non-streaming runnables are correct without override.

fn stream_events<'life0, 'async_trait>( &'life0 self, input: I, config: RunnableConfig, ) -> Pin<Box<dyn Future<Output = Result<EventStream>> + Send + 'async_trait>>

where I: Serialize, O: Serialize, Self: Sized + Sync + 'async_trait, 'life0: 'async_trait,

Stream structured events. Default emits OnStart + OnEnd around an invoke call. Graph engines override to surface per-node events.

fn input_schema(&self) -> Option<Value>

JSON Schema for the input type, if known.

fn output_schema(&self) -> Option<Value>

JSON Schema for the output type, if known.

impl Copy for StringParser