Struct pfmt::extras::AdHocOpts

pub struct AdHocOpts<F>where
    F: FnMut(&[String], &[String], &HashMap<String, String>) -> Result<String, SingleFmtError>,{ /* private fields */ }

A wrapper over a closure that accepts full_name, name and options parameters of the format method on Fmt.

Note that the closure can be FnMut, not just Fn. Also note that while it is possible to call other Fmts recursively from the closure, the arguments and flags of the original format call will be lost and will have to be somehow replaced by the closure itself.

Implementations

impl<F> AdHocOpts<F>where
    F: FnMut(&[String], &[String], &HashMap<String, String>) -> Result<String, SingleFmtError>,

pub fn new(closure: F) -> Self

Trait Implementations

impl<F> Fmt for AdHocOpts<F>where
    F: FnMut(&[String], &[String], &HashMap<String, String>) -> Result<String, SingleFmtError>,

fn format(
    &self,
    full_name: &[String],
    name: &[String],
    _args: &[String],
    _flags: &[char],
    options: &HashMap<String, String>
) -> Result<String, SingleFmtError>

Perform the formatting of a single placeholder. Placeholder’s full name, name segments of child format units, arguments, flags and options will be passed to this method.