pub struct Error { /* fields omitted */ }
An error that occurred while parsing a regular expression into an abstract
syntax tree.
Note that note all ASTs represents a valid regular expression. For example,
an AST is constructed without error for \p{Quux}
, but Quux
is not a
valid Unicode property name. That particular error is reported when
translating an AST to the high-level intermediate representation (HIR
).
Return the type of this error.
The original pattern string in which this error occurred.
Every span reported by this error is reported in terms of this string.
Return the span at which this error occurred.
Return an auxiliary span. This span exists only for some errors that
benefit from being able to point to two locations in the original
regular expression. For example, "duplicate" errors will have the
main error position set to the duplicate occurrence while its
auxiliary span will be set to the initial occurrence.
This method tests for self
and other
values to be equal, and is used by ==
. Read more
This method tests for !=
.
Performs copy-assignment from source
. Read more
Formats the value using the given formatter. Read more
Formats the value using the given formatter. Read more
Deprecated since 1.33.0:
replaced by Error::source, which can support downcasting
The lower-level cause of this error, if any. Read more
The lower-level source of this error, if any. Read more
Creates owned data from borrowed data, usually by cloning. Read more
🔬 This is a nightly-only experimental API. (toowned_clone_into
)
recently added
Uses borrowed data to replace owned data, usually by cloning. Read more
Converts the given value to a String
. Read more
🔬 This is a nightly-only experimental API. (try_from
)
The type returned in the event of a conversion error.
🔬 This is a nightly-only experimental API. (try_from
)
Immutably borrows from an owned value. Read more
Mutably borrows from an owned value. Read more
🔬 This is a nightly-only experimental API. (try_from
)
The type returned in the event of a conversion error.
🔬 This is a nightly-only experimental API. (try_from
)
🔬 This is a nightly-only experimental API. (get_type_id
)
this method will likely be replaced by an associated static