Struct Lowercase 

pub struct Lowercase<Mode> { /* private fields */ }

Rule and transformer for ensuring that a string is entirely lowercase.

Example

use wary::Wary;

#[derive(Wary)]
struct Person {
  #[validate(lowercase)]
  name: String,
  #[validate(lowercase(ascii))]
  greeting: String,
  #[transform(lowercase)]
  message: String,
}

let mut person = Person {
  name: "hello".into(),
  greeting: "hello".into(),
  message: "HELLO".into(),
};

assert!(person.wary(&()).is_ok());
assert_eq!(person.message, "hello");

Implementations

impl Lowercase<Unset>

pub const fn new() -> Self

pub const fn ascii(self) -> Lowercase<Ascii>

Rule

Ensures that the input is entirely lowercase in ascii.

Transformer

Uses str::make_ascii_lowercase to convert in-place instead of requiring a new allocation with str::to_lowercase.

Trait Implementations

impl<I> Rule<I> for Lowercase<Ascii>

where I: AsRef<str> + ?Sized,

type Context = ()

Additional context required to validate the input.

fn validate(&self, _ctx: &Self::Context, item: &I) -> Result<()>

Validates the item.

impl<I> Rule<I> for Lowercase<Unset>

where I: AsRef<str> + ?Sized,

type Context = ()

Additional context required to validate the input.

fn validate(&self, _ctx: &Self::Context, item: &I) -> Result<()>

Validates the item.

impl<I> Transformer<I> for Lowercase<Ascii>

where I: AsMut<str>,

type Context = ()

Additional context required to transform the input.

fn transform(&self, _ctx: &Self::Context, item: &mut I)

Transform the input.

impl Transformer<String> for Lowercase<Unset>

Available on crate feature alloc only.

type Context = ()

Additional context required to transform the input.

fn transform(&self, _ctx: &Self::Context, item: &mut String)

Transform the input.