Enum GLLParseError 

pub enum GLLParseError<'a> {
    UnexpectedByte {
        pointer: usize,
        expected: u8,
        offender: u8,
    },
    TooLong {
        pointer: usize,
        offender: Terminal<'a>,
    },
    NoCandidates {
        pointer: usize,
        rule: String,
        context: String,
    },
    ZeroWeights {
        pointer: usize,
        rule: String,
        context: String,
    },
}

Errors possible while GLL parsing.

Variants

UnexpectedByte

Encountered an unexpected byte.

Fields

pointer: usize

Where in the string the byte was encountered.

expected: u8

What we expected to see.

offender: u8

What we got.

TooLong

Expected more bytes than found in the input string.

Fields

pointer: usize

Where we are at the input string.

offender: Terminal<'a>

What character we expected to see.

NoCandidates

All the alternatives to this rule failed the first_set check.

Fields

pointer: usize

Where in the input stream this happened.

rule: String

String representation of the rule it happened in.

context: String

String representation of the parse context at this time.

ZeroWeights

All the alternatives to this rule had a 0 weight.

Fields

pointer: usize

Where in the input stream this happened.

rule: String

String representation of the rule it happened in.

context: String

String representation of the parse context at this time.

Trait Implementations

impl<'a> Debug for GLLParseError<'a>

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

Formats the value using the given formatter.

impl<'a> Display for GLLParseError<'a>

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

Formats the value using the given formatter.

impl<'a> Error for GLLParseError<'a>

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<'a> From<GLLParseError<'a>> for GLLError<'a>

fn from(value: GLLParseError<'a>) -> Self

Converts to this type from the input type.