Enum x11rb_protocol::errors::ParseError

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#[non_exhaustive]
pub enum ParseError { InsufficientData, ConversionFailed, InvalidExpression, InvalidValue, MissingFileDescriptors, }
Expand description

An error occurred while parsing some data

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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InsufficientData

Not enough data was provided.

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ConversionFailed

A value did not fit.

This error can e.g. happen when a value that was received from the X11 server does not fit into an usize.

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InvalidExpression

The value of an expression could not be computed.

As an example, the length of the data in xproto’s GetPropertyReply is described by value_len * (format / 8). The multiplication could cause an overflow, which would be represented by this error.

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InvalidValue

A value was outside of its valid range.

There are two kinds of situations where this error can happen:

  1. The protocol was violated and a nonsensical value was found.
  2. The user of the API called the wrong parsing function.

Examples for the first kind of error:

  • One of a set of values should be present (a <switch> in xcb-proto-speak), but none of the <cases> matched. This can e.g. happen when parsing crate::protocol::xinput::InputInfo.
  • Parsing a request with a length field that is too small for the request header to fit.

Examples for the second kind of error:

  • Parsing an X11 error with response_type != 0.
  • Parsing an X11 reply with response_type != 1.
  • Parsing an X11 request with the wrong value for its minor_opcode.
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MissingFileDescriptors

Some file descriptors were expected, but not enough were received.

Trait Implementations§

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impl Clone for ParseError

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fn clone(&self) -> ParseError

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 ParseError

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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 ParseError

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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 Error for ParseError

1.30.0 · source§

fn source(&self) -> Option<&(dyn Error + 'static)>

The lower-level source of this error, if any. Read more
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fn description(&self) -> &str

👎Deprecated since 1.42.0: use the Display impl or to_string()
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fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0: replaced by Error::source, which can support downcasting
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fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)
Provides type based access to context intended for error reports. Read more
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impl From<ParseError> for ConnectError

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fn from(err: ParseError) -> Self

Converts to this type from the input type.
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impl PartialEq for ParseError

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

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

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl Copy for ParseError

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impl Eq for ParseError

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impl StructuralPartialEq for ParseError

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> 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.