Struct GenConst 

pub struct GenConst<'a> { /* private fields */ }

A builder for constants.

Implementations

impl<'a> GenConst<'a>

pub fn make_pub(self) -> Self

Make the const pub. By default the const will have no visibility modifier and will only be visible in the current scope.

pub fn with_attr(self, attr: impl Into<String>) -> Self

Add an outer attribute

pub fn with_value<F>(self, f: F) -> Result

where F: FnOnce(&mut StreamBuilder) -> Result,

Complete the constant definition. This function takes a callback that will form the value of the constant.

generator.impl_for("Foo")
         .generate_const("BAR", "u8")
         .with_value(|b| {
            b.push_parsed("5")?;
            Ok(())
         })?;

Generates:

impl Foo for <struct or enum> {
    const BAR: u8 = 5;
}