Struct PromptTemplate 

pub struct PromptTemplate {
    pub base_template: String,
    pub system_message: Option<String>,
    pub example_template: String,
    pub format_type: FormatType,
    pub provider_type: ProviderType,
    pub max_examples: Option<usize>,
    pub include_reasoning: bool,
}

Advanced prompt template with dynamic variables and provider adaptation

Fields

base_template: String

Base template string with variable placeholders

system_message: Option<String>

System message for providers that support it

example_template: String

Template for formatting examples

format_type: FormatType

Output format type

provider_type: ProviderType

Target provider type for optimization

max_examples: Option<usize>

Maximum number of examples to include

include_reasoning: bool

Whether to include reasoning instructions

Implementations

impl PromptTemplate

pub fn new(format_type: FormatType, provider_type: ProviderType) -> Self

Create a new prompt template

pub fn for_provider( provider_type: ProviderType, format_type: FormatType, ) -> Self

Create template optimized for specific provider

pub fn with_max_examples(self, max: usize) -> Self

Set maximum number of examples

pub fn with_system_message(self, message: String) -> Self

Set system message

pub fn with_reasoning(self, enable: bool) -> Self

Enable or disable reasoning instructions

pub fn with_base_template(self, template: String) -> Self

Set custom base template

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 TemplateRenderer for PromptTemplate

fn render(&self, context: &PromptContext) -> LangExtractResult<String>

Render the template with the given context

fn validate(&self) -> LangExtractResult<()>

Validate the template structure

fn required_variables(&self) -> Vec<String>

Get required variables for this template