Enum ValidationError 

#[non_exhaustive]
pub enum ValidationError {
    EmptyField {
        field: &'static str,
    },
    InvalidHttpHeaderValue {
        field: &'static str,
    },
    InvalidHexPrefix {
        field: &'static str,
    },
    InvalidHexLength {
        field: &'static str,
        expected: usize,
    },
    InvalidHexCharacters {
        field: &'static str,
    },
    InvalidNumeric {
        field: &'static str,
    },
    NumericOverflow {
        field: &'static str,
    },
    UnsupportedChain {
        chain_id: u64,
    },
    ValidToOutOfRange {
        actual_seconds: u64,
    },
    DecimalsOutOfRange {
        actual: u8,
        max: u8,
    },
}

Validation failures for typed user input and configuration values.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

EmptyField

A required string or collection field was empty after validation.

Fields

field: &'static str

Identifies the invalid field.

InvalidHttpHeaderValue

A value could not be serialized into a valid HTTP header.

Fields

field: &'static str

Identifies the invalid field.

InvalidHexPrefix

A hexadecimal value did not include the required 0x prefix.

Fields

field: &'static str

Identifies the invalid field.

InvalidHexLength

A fixed-length hexadecimal value had the wrong number of hex characters.

Fields

field: &'static str

Identifies the invalid field.

expected: usize

Required number of hex characters excluding the 0x prefix.

InvalidHexCharacters

A hexadecimal value contained non-hex characters.

Fields

field: &'static str

Identifies the invalid field.

InvalidNumeric

A decimal or hexadecimal numeric value could not be parsed.

Fields

field: &'static str

Identifies the invalid field.

NumericOverflow

A parsed numeric value exceeded the supported uint256 range.

Fields

field: &'static str

Identifies the invalid field.

UnsupportedChain

A chain id was not part of the supported CoW Protocol network set.

Fields

chain_id: u64

Unsupported numeric chain id supplied by the caller.

ValidToOutOfRange

A valid_to timestamp exceeded the protocol-fixed u32 epoch ceiling.

Fields

actual_seconds: u64

Requested absolute timestamp in seconds.

DecimalsOutOfRange

A decimals scale passed to Amount::parse_units was above the maximum representable value.

The maximum is 77 because 10^77 < 2^256 - 1 < 10^78, so any decimals value above 77 would make 10^decimals overflow the inner uint256 that backs Amount. Every ERC-20 token across the supported chains ships decimals <= 18, so the bound is structurally satisfied in practice; the explicit error fails closed at construction time instead of saturating or panicking.

Fields

actual: u8

The decimals scale that was rejected.

max: u8

The maximum representable decimals scale.

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, __formatter: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Eq for ValidationError

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 From<ValidationError> for CoreError

fn from(source: ValidationError) -> Self

Converts to this type from the input type.

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 StructuralPartialEq for ValidationError