Struct rubble_templates_evaluators::simple::evaluator::SimpleEvaluationEngine

pub struct SimpleEvaluationEngine { /* fields omitted */ }

Simple evaluation engine providing basic features like variable and function evaluation.

This engine evaluates are variables, functions and literals in a code fragment and returns a resulting String. It might also return an error when encounters unexpected identifier or a variable with parameters. When it encounters a function, it tries to evaluate it and propagates any error that it returns.

This engine always uses the same Functions for evaluations, but can be supplied with different parameters during every evaluation.

Implementations

impl SimpleEvaluationEngine

pub fn from(
    functions: HashMap<String, Box<dyn Function>>
) -> SimpleEvaluationEngine

Trait Implementations

impl Evaluator for SimpleEvaluationEngine

fn evaluate(
    &self,
    syntax_node: &SyntaxNode,
    context: &mut Context
) -> Result<String, SyntaxError>