Struct PromptTemplate 

pub struct PromptTemplate {
    pub template: String,
    pub few_shot: Vec<String>,
}

A prompt template with optional few-shot examples.

Fields

template: String

Template body containing {{variable}} placeholders.

few_shot: Vec<String>

Few-shot example strings rendered before the template body.

Implementations

impl PromptTemplate

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

Create a template from a body string.

pub fn with_few_shot(self, examples: Vec<String>) -> Self

Set the few-shot examples, returning the updated template.

pub fn render(&self, vars: &[(&str, &str)]) -> String

Render the few-shot examples then the substituted template body.

Each few-shot example is emitted on its own line before the template body. Variable substitution reuses crate::llm::prompt::render_prompt, so any {{variable}} without a matching entry is left as-is.

pub fn variables(&self) -> Vec<String>

Extract the {{variable}} names referenced by the template, in first-seen order.

Scans the template body for tokens between the literal strings "{{" and "}}", returning the unique names in order of first appearance. Few-shot examples are not scanned.

Trait Implementations

impl Clone for PromptTemplate

fn clone(&self) -> PromptTemplate

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for PromptTemplate

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for PromptTemplate

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for PromptTemplate

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

where __S: Serializer,

Serialize this value into the given Serde serializer.