Trait InputBuild 

pub trait InputBuild<T: FromStr> {
    // Required methods
    fn msg(self, msg: impl ToString) -> Self;
    fn repeat_msg(self, msg: impl ToString) -> Self;
    fn err(self, err: impl ToString) -> Self;
    fn add_test<F: Fn(&T) -> bool + 'static>(self, test: F) -> Self;
    fn add_err_test<F>(self, test: F, err: impl ToString) -> Self
       where F: Fn(&T) -> bool + 'static;
    fn clear_tests(self) -> Self;
    fn err_match<F>(self, err_match: F) -> Self
       where F: Fn(&T::Err) -> Option<String> + 'static;
    fn inside<U: InsideFunc<T>>(self, constraint: U) -> Self;
    fn inside_err<U: InsideFunc<T>>(
        self,
        constraint: U,
        err: impl ToString,
    ) -> Self;
    fn toggle_msg_repeat(self) -> Self;
    fn prompting_on(self, prompt_output: RefCell<Box<dyn Write>>) -> Self;
    fn prompting_on_stderr(self) -> Self;
}

Trait for common types that store input settings.

Required Methods

fn msg(self, msg: impl ToString) -> Self

Changes or adds a prompt message that gets printed once when input if fetched.

fn repeat_msg(self, msg: impl ToString) -> Self

Changes or adds a prompt message and that is repeated each time input is requested.

fn err(self, err: impl ToString) -> Self

Changes fallback error message.

fn add_test<F: Fn(&T) -> bool + 'static>(self, test: F) -> Self

Adds a validation check on input.

fn add_err_test<F>(self, test: F, err: impl ToString) -> Self

where F: Fn(&T) -> bool + 'static,

Adds a validation check on input with a custom error message printed when the test fails.

fn clear_tests(self) -> Self

Removes all validation checks made by .add_test(), .add_err_test(), .inside() and .inside_err().

fn err_match<F>(self, err_match: F) -> Self

where F: Fn(&T::Err) -> Option<String> + 'static,

Used specify custom error messages that depend on the errors produced by from_str().

fn inside<U: InsideFunc<T>>(self, constraint: U) -> Self

Ensures that input is within a range, array or vector.

fn inside_err<U: InsideFunc<T>>(self, constraint: U, err: impl ToString) -> Self

Ensures that input is within a range, array or vector with a custom error message printed when input fails.

fn toggle_msg_repeat(self) -> Self

Toggles whether a prompt message gets printed once or each time input is requested.

fn prompting_on(self, prompt_output: RefCell<Box<dyn Write>>) -> Self

Send prompts to custom writer instead of stdout

fn prompting_on_stderr(self) -> Self

Send prompts to stderr instead of stdout

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

impl<T: FromStr> InputBuild<T> for InputBuilder<T>

impl<T: FromStr> InputBuild<T> for InputBuilderOnce<T>