Struct rubble_templates_core::functions::SimpleFunction[][src]

pub struct SimpleFunction<F> where
    F: Fn(&[String]) -> String
{ /* fields omitted */ }

A wrapper for a Fn(&[String]) -> String, to be used in Evaluator.

Example:

use rubble_templates_core::evaluator::{Evaluator, Function, SyntaxError};
use std::collections::HashMap;
use rubble_templates_core::functions::SimpleFunction;

fn plus_function(parameters: &[String]) -> String {
    parameters.iter()
            .map(|param|
                param.parse::<i32>().unwrap()
            )
            .sum::<i32>()
            .to_string()
}

let mut functions: HashMap<String, Box<dyn Function>> = HashMap::new();
functions.insert("plus".to_string(), SimpleFunction::new(plus_function)); // will be treated as Box<dyn Function>

Implementations

impl<F> SimpleFunction<F> where
    F: Fn(&[String]) -> String
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pub fn new(function: F) -> Box<SimpleFunction<F>>[src]

Trait Implementations

impl<F> Function for SimpleFunction<F> where
    F: Fn(&[String]) -> String
[src]

Auto Trait Implementations

impl<F> RefUnwindSafe for SimpleFunction<F> where
    F: RefUnwindSafe

impl<F> Send for SimpleFunction<F> where
    F: Send

impl<F> Sync for SimpleFunction<F> where
    F: Sync

impl<F> Unpin for SimpleFunction<F> where
    F: Unpin

impl<F> UnwindSafe for SimpleFunction<F> where
    F: UnwindSafe

Blanket Implementations

impl<T> Any for T where
    T: 'static + ?Sized
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impl<T> Borrow<T> for T where
    T: ?Sized
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impl<T> BorrowMut<T> for T where
    T: ?Sized
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impl<T> From<T> for T[src]

impl<T, U> Into<U> for T where
    U: From<T>, 
[src]

impl<T, U> TryFrom<U> for T where
    U: Into<T>, 
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type Error = Infallible

The type returned in the event of a conversion error.

impl<T, U> TryInto<U> for T where
    U: TryFrom<T>, 
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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.