Enum Error 

pub enum Error {
    UnexpectedEof,
    BadMagic,
    BadHeader,
    MissingTable(&'static str),
    BadOffset,
    GlyphOutOfRange(u16),
    UnsupportedCmapFormat(u16),
    CompositeTooDeep,
    BadLocaOffset,
    BadStructure(&'static str),
    SubfontOutOfRange(u32),
}

Errors emitted during font parsing or glyph lookup.

Variants

UnexpectedEof

The input slice is too short for the requested header / structure.

BadMagic

The sfnt magic version did not match 0x00010000, OTTO, or true.

BadHeader

The table count in the sfnt header is implausibly large.

MissingTable(&'static str)

A required table was missing from the table directory.

BadOffset

A length / offset field pointed outside the file.

GlyphOutOfRange(u16)

A glyph index was out of range vs. maxp.numGlyphs.

UnsupportedCmapFormat(u16)

A cmap subtable used a format we do not implement in round 1.

CompositeTooDeep

A composite-glyph chain exceeded the max recursion depth (16).

BadLocaOffset

A loca offset pointed past the end of glyf.

BadStructure(&'static str)

A varying-length structure was malformed.

SubfontOutOfRange(u32)

A from_collection_bytes call asked for a subfont index that the TTC header does not contain. Carries the requested index.

Trait Implementations

impl Clone for Error

fn clone(&self) -> Error

Returns a duplicate of the value.

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

Performs copy-assignment from source.

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 PartialEq for Error

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Error