Struct SystemPromptSource 

pub struct SystemPromptSource { /* private fields */ }

A Source that emits a fixed system-prompt string every turn.

Critical-priority, marked non-redactable so governance can’t quietly rewrite the system prompt. The tokenizer hint defaults to text.len() / 4; override with Self::with_estimated_tokens when you have a tighter number from your tokenizer.

Implementations

impl SystemPromptSource

pub fn new(text: impl Into<String>) -> Self

Construct a source with the default ID "system_prompt".

pub fn with_id(self, id: impl Into<SourceId>) -> Self

Override the default SourceId (useful when wiring multiple system prompts — e.g. a base prompt plus a user-specific personality layer — and you want them attributed separately in the receipt).

pub fn with_estimated_tokens(self, tokens: usize) -> Self

Override the source-side token estimate. The builder always re-tokenizes ground-truth, so this is a hint only.

pub fn text(&self) -> &str

The raw system-prompt text.

Trait Implementations

impl Clone for SystemPromptSource

fn clone(&self) -> SystemPromptSource

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SystemPromptSource

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

Formats the value using the given formatter.

impl Source for SystemPromptSource

fn id(&self) -> SourceId

Stable identifier for this source. Receipts and message attribution key off this value.

fn priority(&self) -> Priority

Priority bucket. Drives budget floors and prune ordering.

fn contribute<'life0, 'life1, 'async_trait>( &'life0 self, _ctx: &'life1 BriefContext, ) -> Pin<Box<dyn Future<Output = Result<Vec<Contribution>, SourceError>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Produce zero or more Contributions for this turn.