Struct PromptManager 

pub struct PromptManager { /* private fields */ }

Manages prompt templates using minijinja for rendering.

Templates can be added individually via add_template or loaded in bulk from a directory via load_from_dir.

Implementations

impl PromptManager

pub fn new() -> Self

Creates a new empty prompt manager with no templates loaded.

Use add_template or load_from_dir to populate with templates.

pub fn with_builtin_templates() -> Result<Self, PromptError>

Creates a new prompt manager pre-loaded with all built-in templates.

Built-in templates are embedded at compile time via include_str! and are always available, even when installed via cargo install.

Errors

Returns PromptError::InvalidTemplate if any built-in template has invalid minijinja syntax.

Examples

use coda_pm::PromptManager;

let pm = PromptManager::with_builtin_templates().unwrap();
assert!(pm.get_template("init/system").is_some());

pub fn add_template( &mut self, template: PromptTemplate, ) -> Result<(), PromptError>

Registers a single template with the manager.

Errors

Returns PromptError::InvalidTemplate if the template content has invalid minijinja syntax.

pub fn load_from_dir(&mut self, dir: &Path) -> Result<(), PromptError>

Loads all .j2 templates from a directory recursively.

Template names are derived from relative paths (e.g., init/system from init/system.j2). Existing templates with the same name are overwritten.

Errors

Returns PromptError::IoError if the directory cannot be read, or PromptError::InvalidTemplate if a template has invalid syntax.

pub fn render<T: Serialize>( &self, name: &str, ctx: T, ) -> Result<String, PromptError>

Renders a named template with the given context data.

Errors

Returns PromptError::TemplateNotFound if no template with the given name exists, or PromptError::RenderError if rendering fails.

pub fn get_template(&self, name: &str) -> Option<&PromptTemplate>

Returns a reference to the template with the given name, if it exists.

pub fn template_count(&self) -> usize

Returns the number of templates currently loaded.

Examples

use coda_pm::{PromptManager, PromptTemplate};

let mut pm = PromptManager::new();
assert_eq!(pm.template_count(), 0);
pm.add_template(PromptTemplate::new("test", "Hello")).unwrap();
assert_eq!(pm.template_count(), 1);

Trait Implementations

impl Clone for PromptManager

fn clone(&self) -> PromptManager

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for PromptManager

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

Formats the value using the given formatter.

impl Default for PromptManager

fn default() -> Self

Returns the “default value” for a type.