Struct Str 

pub struct Str { /* private fields */ }

(string feature) Accepts a string, with optional length bounds and (with the regex feature) a pattern. No coercion: non-string values are rejected.

Implementations

impl Str

pub fn with_meta(self, meta: Meta) -> Self

Attach human-facing metadata (name, description, examples, default, output conversion).

pub fn new() -> Self

pub fn min_chars(self, min: usize) -> Self

pub fn max_chars(self, max: usize) -> Self

pub fn regex(self, pattern: impl Into<String>) -> Result<Self, String>

Require the string to match pattern.

Returns Err with the compiler message if pattern is not a valid regular expression, so the caller must ? or unwrap it.

Trait Implementations

impl Clone for Str

fn clone(&self) -> Str

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Str

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for Str

fn default() -> Str

Returns the “default value” for a type.

impl Validator for Str

fn meta(&self) -> &Meta

This validator’s human-facing metadata.

fn meta_mut(&mut self) -> &mut Meta

Mutable access to this validator’s metadata (backs the WithMeta builder setters).

fn check(&self, value: &mut Value) -> Result<(), Error>

The validation rule: check (and coerce) value in place.

fn validate(&self, value: &mut Value) -> Result<(), Error>

Run check; on error attach this validator’s Meta (innermost wins); on success apply the output conversion in meta().convert, if any.