syntax::unescape

Enum EscapeError

pub enum EscapeError {
Show 23 variants ZeroChars, MoreThanOneChar, LoneSlash, InvalidEscape, BareCarriageReturn, BareCarriageReturnInRawString, EscapeOnlyChar, TooShortHexEscape, InvalidCharInHexEscape, OutOfRangeHexEscape, NoBraceInUnicodeEscape, InvalidCharInUnicodeEscape, EmptyUnicodeEscape, UnclosedUnicodeEscape, LeadingUnderscoreUnicodeEscape, OverlongUnicodeEscape, LoneSurrogateUnicodeEscape, OutOfRangeUnicodeEscape, UnicodeEscapeInByte, NonAsciiCharInByte, NulInCStr, UnskippedWhitespaceWarning, MultipleSkippedLinesWarning,
}
Expand description

Errors and warnings that can occur during string unescaping. They mostly relate to malformed escape sequences, but there are a few that are about other problems.

Variants§

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ZeroChars

Expected 1 char, but 0 were found.

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MoreThanOneChar

Expected 1 char, but more than 1 were found.

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LoneSlash

Escaped ’' character without continuation.

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InvalidEscape

Invalid escape character (e.g. ‘\z’).

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BareCarriageReturn

Raw ‘\r’ encountered.

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BareCarriageReturnInRawString

Raw ‘\r’ encountered in raw string.

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EscapeOnlyChar

Unescaped character that was expected to be escaped (e.g. raw ‘\t’).

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TooShortHexEscape

Numeric character escape is too short (e.g. ‘\x1’).

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InvalidCharInHexEscape

Invalid character in numeric escape (e.g. ‘\xz’)

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OutOfRangeHexEscape

Character code in numeric escape is non-ascii (e.g. ‘\xFF’).

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NoBraceInUnicodeEscape

‘\u’ not followed by ‘{’.

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InvalidCharInUnicodeEscape

Non-hexadecimal value in ‘\u{..}’.

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EmptyUnicodeEscape

‘\u{}’

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UnclosedUnicodeEscape

No closing brace in ‘\u{..}’, e.g. ‘\u{12’.

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LeadingUnderscoreUnicodeEscape

‘\u{_12}’

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OverlongUnicodeEscape

More than 6 characters in ‘\u{..}’, e.g. ‘\u{10FFFF_FF}’

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LoneSurrogateUnicodeEscape

Invalid in-bound unicode character code, e.g. ‘\u{DFFF}’.

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OutOfRangeUnicodeEscape

Out of bounds unicode character code, e.g. ‘\u{FFFFFF}’.

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UnicodeEscapeInByte

Unicode escape code in byte literal.

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NonAsciiCharInByte

Non-ascii character in byte literal, byte string literal, or raw byte string literal.

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NulInCStr

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UnskippedWhitespaceWarning

After a line ending with ’', the next line contains whitespace characters that are not skipped.

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MultipleSkippedLinesWarning

After a line ending with ’', multiple lines are skipped.

Implementations§

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impl EscapeError

pub fn is_fatal(&self) -> bool

Returns true for actual errors, as opposed to warnings.

Trait Implementations§

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impl Debug for EscapeError

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

Formats the value using the given formatter. Read more
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impl PartialEq for EscapeError

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

Tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl Eq for EscapeError

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impl StructuralPartialEq for EscapeError

Auto Trait Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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

Mutably borrows from an owned value. Read more
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impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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fn equivalent(&self, key: &K) -> bool

Checks if this value is equivalent to the given key. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided [Span], returning an Instrumented wrapper. Read more
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fn into(self) -> U

Calls U::from(self).

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fn into_box(self) -> Box<dyn Any>

Convert self into the appropriate boxed form.
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fn into_box(self) -> Box<dyn Any + Send>

Convert self into the appropriate boxed form.
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Convert self into the appropriate boxed form.
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fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
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Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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impl<T, U> TryFrom<U> for T
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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
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