Struct ValidationError 

pub struct ValidationError {
    pub code_point: u32,
    pub position: usize,
    pub message: String,
}

Describes a single code-point validation failure.

A ValidationError pinpoints the exact character that caused the check to fail, its position in the input string, and a human-readable message.

Examples

use japanese_codepoints::CodePoints;

let cp = CodePoints::ascii_printable();
let err = cp.validate("hello\0world").unwrap_err();
assert_eq!(err.code_point, 0);   // NULL character
assert_eq!(err.position, 5);     // index of '\0'
assert!(err.to_string().contains("U+0000"));

Fields

code_point: u32

The Unicode code point that is not allowed by the character set.

position: usize

Zero-based character index (not byte index) within the input string.

message: String

A human-readable description of the error.

Implementations

impl ValidationError

pub fn new(code_point: u32, position: usize) -> Self

Creates a ValidationError for the given code point and character index.

pub fn with_message( code_point: u32, position: usize, message: impl Into<String>, ) -> Self

Creates a ValidationError with an explicit message, overriding the default formatting.

Trait Implementations

impl Clone for ValidationError

fn clone(&self) -> ValidationError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ValidationError

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

Formats the value using the given formatter.

impl Display for ValidationError

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

Formats the value using the given formatter.

impl Error for ValidationError

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0: use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0: replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.

impl PartialEq for ValidationError

fn eq(&self, other: &ValidationError) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Eq for ValidationError

impl StructuralPartialEq for ValidationError