target_spec::errors

Enum ExpressionParseErrorKind

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#[non_exhaustive]
pub enum ExpressionParseErrorKind { InvalidNot(usize), InvalidCharacters, UnclosedParens, UnopenedParens, UnclosedQuotes, UnopenedQuotes, Empty, Unexpected { expected: &'static [&'static str], }, InvalidInteger, MultipleRootPredicates, InvalidHasAtomic, UnknownBuiltin, }
Expand description

The kind of ExpressionParseError that occurred.

Variants (Non-exhaustive)§

This enum is marked as non-exhaustive
Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.
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InvalidNot(usize)

not() takes exactly 1 predicate, unlike all() and any()

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InvalidCharacters

The characters are not valid in an cfg expression

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UnclosedParens

An opening parens was unmatched with a closing parens

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UnopenedParens

A closing parens was unmatched with an opening parens

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UnclosedQuotes

An opening quotes was unmatched with a closing quotes

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UnopenedQuotes

A closing quotes was unmatched with an opening quotes

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Empty

The expression does not contain any valid terms

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Unexpected

Found an unexpected term, which wasn’t one of the expected terms that is listed

Fields

§expected: &'static [&'static str]

The list of expected terms.

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InvalidInteger

Failed to parse an integer value

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MultipleRootPredicates

The root cfg() may only contain a single predicate

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InvalidHasAtomic

A target_has_atomic predicate didn’t correctly parse.

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UnknownBuiltin

An element was not part of the builtin information in rustc

Trait Implementations§

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impl Clone for ExpressionParseErrorKind

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fn clone(&self) -> ExpressionParseErrorKind

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for ExpressionParseErrorKind

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

Formats the value using the given formatter. Read more
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impl Display for ExpressionParseErrorKind

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

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

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fn eq(&self, other: &ExpressionParseErrorKind) -> 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 ExpressionParseErrorKind

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impl StructuralPartialEq for ExpressionParseErrorKind

Auto Trait Implementations§

Blanket 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<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dst: *mut T)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dst. 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, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

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

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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T> ToString for T
where T: Display + ?Sized,

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default fn to_string(&self) -> String

Converts the given value to a String. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<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.