Struct Engine 

pub struct Engine { /* private fields */ }

A template engine that compiles templates into an AST and renders them.

Templates are added by name and can reference each other via {% include %} and {% extends %} / {% block %}.

Implementations

impl Engine

pub fn new(mode: EscapeMode) -> Self

Create a new engine with the given escaping mode.

pub fn add_template(&mut self, name: &str, source: &str) -> Result<(), Error>

Compile and register a template by name.

Returns an error if the template source contains invalid syntax (e.g. unclosed {{ }}, mismatched {% if %} / {% endif %}) or if a template with the same name already exists.

pub fn render<S: Serialize>( &self, name: &str, variables: S, ) -> Result<String, Error>

Render a named template with the given context variables.

The variables argument can be any type that implements Serialize (e.g. serde_json::Value, a struct with #[derive(Serialize)]).

Returns an error if the template name is not registered or if an expression fails during rendering.