Enum Error 

#[non_exhaustive]
pub enum Error {
    Malformed,
    MissingResource,
    InvalidOperation,
    LimitExceeded,
    InsufficientMemory,
}

An error from reading a glyph or evaluating a program in the font.

It identifies only the kind of failure. The caller already knows which glyph or table was requested.

Variants (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.

Malformed

The font data is too short, inconsistent, or refers past the end of something that is present.

MissingResource

A required part of the font is absent, such as a glyph, a table, or a CFF dictionary, subroutine index or charset.

InvalidOperation

A program in the font, a charstring or TrueType instructions, did something that is not valid, such as popping an empty stack.

LimitExceeded

The font exceeds a limit this crate sets, such as a nesting depth or a count of points, components or paints. A cycle in a color glyph’s paint graph exceeds the nesting depth.

The limits are in limits.

InsufficientMemory

The memory supplied by the caller is too small.

Trait Implementations

impl Clone for Error

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for Error

impl Debug for Error

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

Formats the value using the given formatter.

impl Display for Error

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

Formats the value using the given formatter.

impl Eq for Error

impl Error for Error

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

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0:

use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

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.

impl From<HintError> for Error

fn from(_: HintError) -> Self

Converts to this type from the input type.

impl From<ReadError> for Error

fn from(_: ReadError) -> Self

Converts to this type from the input type.

impl Hash for Error

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for Error

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

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for Error