Enum `Error`

enum Error

An error that occurred during parsing or compiling a regular expression.

Variants

Syntax(alloc::string::String)

A syntax error.

CompiledTooBig(usize)

The compiled program exceeded the set size limit. The argument is the size limit imposed by RegexBuilder::size_limit. Even when not configured explicitly, it defaults to a reasonable limit.

If you're getting this error, it occurred because your regex has been compiled to an intermediate state that is too big. It is important to note that exceeding this limit does not mean the regex is too big to work, but rather, the regex is big enough that it may wind up being surprisingly slow when used in a search. In other words, this error is meant to be a practical heuristic for avoiding a performance footgun, and especially so for the case where the regex pattern is coming from an untrusted source.

There are generally two ways to move forward if you hit this error. The first is to find some way to use a smaller regex. The second is to increase the size limit via RegexBuilder::size_limit. However, if your regex pattern is not from a trusted source, then neither of these approaches may be appropriate. Instead, you'll have to determine just how big of a regex you want to allow.

Implementations

`impl Clone for Error`

fn clone(self: &Self) -> Error

`impl Debug for Error`

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

`impl Display for Error`

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

`impl Error for Error`

fn description(self: &Self) -> &str

`impl Freeze for Error`

`impl PartialEq for Error`

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

`impl RefUnwindSafe for Error`

`impl Send for Error`

`impl StructuralPartialEq for Error`

`impl Sync for Error`

`impl Unpin for Error`

`impl UnsafeUnpin for Error`

`impl UnwindSafe for Error`

`impl<T> Any for Error`

fn type_id(self: &Self) -> TypeId

`impl<T> Borrow for Error`

fn borrow(self: &Self) -> &T

`impl<T> BorrowMut for Error`

fn borrow_mut(self: &mut Self) -> &mut T

`impl<T> CloneToUninit for Error`

unsafe fn clone_to_uninit(self: &Self, dest: *mut u8)

`impl<T> From for Error`

fn from(t: T) -> T: Returns the argument unchanged.

`impl<T> ToOwned for Error`

fn to_owned(self: &Self) -> T
fn clone_into(self: &Self, target: &mut T)

`impl<T> ToString for Error`

fn to_string(self: &Self) -> String

`impl<T, U> Into for Error`

fn into(self: Self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of [From]<T> for U chooses to do.

`impl<T, U> TryFrom for Error`

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

`impl<T, U> TryInto for Error`

fn try_into(self: Self) -> Result<U, <U as TryFrom<T>>::Error>