Enum ConsumeErrorType

pub enum ConsumeErrorType {
    InsufficientTokens {
        index: usize,
    },
    UnexpectedToken {
        index: usize,
        token: char,
    },
    InvalidValue {
        index: usize,
    },
}

One item in ConsumeError. these can occur while consuming from a `source.

Multiple instances of this type can occur during one parsing. Especially, multiple instance of these error occur, when using enum’s or using the Either<L, R> struct.

Variants

InsufficientTokens

An error varient which occurs when while consuming more tokens where expected, but none were found.

Fields

index: usize

The utf-8 character index within the source at which more tokens were expected, but not found.

UnexpectedToken

An error varient which occurs when while consuming a token that was not expected is presented.

Fields

index: usize

The utf-8 character index within the source at which an unexpected token was found.

token: char

The utf-8 character which was unexpected.

InvalidValue

An error varient which occurs when while consuming a consume condition is not met.

This happens most often when a condition is specified for consumation, but it is not met. However, this also happens when a integer or float overflows tries to assume an incorrect value.

Fields

index: usize

The utf-8 character index within the source at which an invalid value started to be formed.

Implementations

impl ConsumeErrorType

pub fn index(&self) -> &usize

Fetch the utf-8 character index at which a consume error occured.

pub fn offset(self, by: usize) -> Self

Mutate self to move the utf-8 character index at which they were caused by by.

Examples

use manger::ConsumeErrorType::*;
assert_eq!(
    InvalidValue { index: 0 }.offset(2),
    InvalidValue { index: 2 },
);

Trait Implementations

impl Clone for ConsumeErrorType

fn clone(&self) -> ConsumeErrorType

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for ConsumeErrorType

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

Formats the value using the given formatter.

impl Display for ConsumeErrorType

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

Formats the value using the given formatter.

impl Error for ConsumeErrorType

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 ConsumeErrorType

fn eq(&self, other: &ConsumeErrorType) -> 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 Copy for ConsumeErrorType

impl StructuralPartialEq for ConsumeErrorType