Enum regex_automata::util::captures::GroupInfoErrorKind

enum GroupInfoErrorKind {
    TooManyPatterns {
        err: PatternIDError,
    },
    TooManyGroups {
        pattern: PatternID,
        minimum: usize,
    },
    MissingGroups {
        pattern: PatternID,
    },
    FirstMustBeUnnamed {
        pattern: PatternID,
    },
    Duplicate {
        pattern: PatternID,
        name: String,
    },
}

The kind of error that occurs when building a GroupInfo fails.

We keep this un-exported because it’s not clear how useful it is to export it.

Variants

TooManyPatterns

This occurs when too many patterns have been added. i.e., It would otherwise overflow a PatternID.

Fields

err: PatternIDError

TooManyGroups

This occurs when too many capturing groups have been added for a particular pattern.

Fields

pattern: PatternID

The ID of the pattern that had too many groups.

minimum: usize

The minimum number of groups that the caller has tried to add for a pattern.

MissingGroups

An error that occurs when a pattern has no capture groups. Either the group info must be empty, or all patterns must have at least one group (corresponding to the unnamed group for the entire pattern).

Fields

pattern: PatternID

The ID of the pattern that had no capturing groups.

FirstMustBeUnnamed

An error that occurs when one tries to provide a name for the capture group at index 0. This capturing group must currently always be unnamed.

Fields

pattern: PatternID

The ID of the pattern that was found to have a named first capturing group.

Duplicate

An error that occurs when duplicate capture group names for the same pattern are added.

NOTE: At time of writing, this error can never occur if you’re using regex-syntax, since the parser itself will reject patterns with duplicate capture group names. This error can only occur when the builder is used to hand construct NFAs.

Fields

pattern: PatternID

The pattern in which the duplicate capture group name was found.

name: String

The duplicate name.

Trait Implementations

impl Clone for GroupInfoErrorKind

fn clone(&self) -> GroupInfoErrorKind

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for GroupInfoErrorKind

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

Formats the value using the given formatter.