Enum regex_syntax::ErrorKind
[−]
[src]
pub enum ErrorKind { DoubleFlagNegation, DuplicateCaptureName(String), EmptyAlternate, EmptyCaptureName, EmptyFlagNegation, EmptyGroup, InvalidBase10(String), InvalidBase16(String), InvalidCaptureName(String), InvalidClassRange { start: char, end: char, }, InvalidClassEscape(Expr), InvalidRepeatRange { min: u32, max: u32, }, InvalidScalarValue(u32), MissingBase10, RepeaterExpectsExpr, RepeaterUnexpectedExpr(Expr), UnclosedCaptureName(String), UnclosedHex, UnclosedParen, UnclosedRepeat, UnclosedUnicodeName, UnexpectedClassEof, UnexpectedEscapeEof, UnexpectedFlagEof, UnexpectedTwoDigitHexEof, UnopenedParen, UnrecognizedEscape(char), UnrecognizedFlag(char), UnrecognizedUnicodeClass(String), // some variants omitted }
The specific type of parse error that can occur.
Variants
DoubleFlagNegation
A negation symbol is used twice in flag settings.
e.g., (?-i-s)
.
DuplicateCaptureName(String)
The same capture name was used more than once.
e.g., (?P<a>.)(?P<a>.)
.
EmptyAlternate
An alternate is empty. e.g., (|a)
.
EmptyCaptureName
A capture group name is empty. e.g., (?P<>a)
.
EmptyFlagNegation
A negation symbol was not proceded by any flags. e.g., (?i-)
.
EmptyGroup
A group is empty. e.g., ()
.
InvalidBase10(String)
An invalid number was used in a counted repetition. e.g., a{b}
.
InvalidBase16(String)
An invalid hexadecimal number was used in an escape sequence.
e.g., \xAG
.
InvalidCaptureName(String)
An invalid capture name was used. e.g., (?P<0a>b)
.
InvalidClassRange
An invalid class range was givien. Specifically, when the start of the
range is greater than the end. e.g., [z-a]
.
Fields
start: char | The first character specified in the range. |
end: char | The second character specified in the range. |
InvalidClassEscape(Expr)
An escape sequence was used in a character class where it is not
allowed. e.g., [a-\pN]
or [\A]
.
InvalidRepeatRange
An invalid counted repetition min/max was given. e.g., a{2,1}
.
Fields
min: u32 | The first number specified in the repetition. |
max: u32 | The second number specified in the repetition. |
InvalidScalarValue(u32)
An invalid Unicode scalar value was used in a long hexadecimal
sequence. e.g., \x{D800}
.
MissingBase10
An empty counted repetition operator. e.g., a{}
.
RepeaterExpectsExpr
A repetition operator was not applied to an expression. e.g., *
.
RepeaterUnexpectedExpr(Expr)
A repetition operator was applied to an expression that cannot be
repeated. e.g., a+*
or a|*
.
UnclosedCaptureName(String)
A capture group name that is never closed. e.g., (?P<a
.
UnclosedHex
An unclosed hexadecimal literal. e.g., \x{a
.
UnclosedParen
An unclosed parenthesis. e.g., (a
.
UnclosedRepeat
An unclosed counted repetition operator. e.g., a{2
.
UnclosedUnicodeName
An unclosed named Unicode class. e.g., \p{Yi
.
UnexpectedClassEof
Saw end of regex before class was closed. e.g., [a
.
UnexpectedEscapeEof
Saw end of regex before escape sequence was closed. e.g., \
.
UnexpectedFlagEof
Saw end of regex before flags were closed. e.g., (?i
.
UnexpectedTwoDigitHexEof
Saw end of regex before two hexadecimal digits were seen. e.g., \xA
.
UnopenedParen
Unopened parenthesis. e.g., )
.
UnrecognizedEscape(char)
Unrecognized escape sequence. e.g., \q
.
UnrecognizedFlag(char)
Unrecognized flag. e.g., (?a)
.
UnrecognizedUnicodeClass(String)
Unrecognized named Unicode class. e.g., \p{Foo}
.
Trait Implementations
impl PartialEq for ErrorKind
[src]
fn eq(&self, __arg_0: &ErrorKind) -> bool
This method tests for self
and other
values to be equal, and is used by ==
. Read more
fn ne(&self, __arg_0: &ErrorKind) -> bool
This method tests for !=
.
impl Debug for ErrorKind
[src]
impl Clone for ErrorKind
[src]
fn clone(&self) -> ErrorKind
Returns a copy of the value. Read more
fn clone_from(&mut self, source: &Self)
1.0.0
Performs copy-assignment from source
. Read more