cedar_policy_core::ast

Trait BoundedDisplay

Source 
pub trait BoundedDisplay {
    // Required method
    fn fmt(&self, f: &mut impl Write, n: Option<usize>) -> Result;

    // Provided methods
    fn fmt_bounded(&self, f: &mut impl Write, n: usize) -> Result { ... }
    fn fmt_unbounded(&self, f: &mut impl Write) -> Result { ... }
}
Expand description

Like Display, but optionally truncates embedded sets/records to n elements/pairs, including recursively.

n: the maximum number of set elements, or record key-value pairs, that will be shown before eliding the rest with ... None means no bound.

Intended for error messages, to avoid very large/long error messages.

Required Methods§

Source

fn fmt(&self, f: &mut impl Write, n: Option<usize>) -> Result

Write self to the writer f, truncating set elements or key-value pairs if necessary based on n

Provided Methods§

Source

fn fmt_bounded(&self, f: &mut impl Write, n: usize) -> Result

Convenience method, equivalent to fmt() with n as Some.

You should generally not re-implement this, just use the default implementation.

Source

fn fmt_unbounded(&self, f: &mut impl Write) -> Result

Convenience method, equivalent to fmt() with n as None.

You should generally not re-implement this, just use the default implementation.

Dyn Compatibility§

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors§