Enum MacFontAdapterError 

pub enum MacFontAdapterError {
    ContextBudgetExceeded {
        length: usize,
        max_allowed: usize,
    },
    EmptyText,
    InvalidUtf16Offset {
        utf16_offset: usize,
    },
    MidScalarBoundary {
        byte_offset: usize,
    },
    BridgeUnavailable(String),
    ForeignCallFailed(String),
    RasterDimensionTooLarge {
        dimension: u32,
        max_allowed: u32,
    },
    RasterBytesTooLarge {
        bytes: usize,
        max_allowed: usize,
    },
    RasterBufferMismatch {
        expected: usize,
        actual: usize,
    },
    FallbackDisabled {
        unshaped_byte_offset: usize,
    },
}

Errors occurring during Mac font adapter operations.

Variants

ContextBudgetExceeded

Text exceeds the bounded work context budget (Plan §10.9).

Fields

length: usize

max_allowed: usize

EmptyText

Input text was empty.

InvalidUtf16Offset

UTF-16 code unit offset from CoreText could not be mapped to UTF-8 bytes.

Fields

utf16_offset: usize

MidScalarBoundary

Mapped byte offset fell inside a multi-byte UTF-8 scalar.

Fields

byte_offset: usize

BridgeUnavailable(String)

Native bridge failed or framework is unavailable.

ForeignCallFailed(String)

Foreign call execution failed.

RasterDimensionTooLarge

Raster dimension exceeded configured maximum.

Fields

dimension: u32

max_allowed: u32

RasterBytesTooLarge

Raster buffer memory size exceeded configured maximum.

Fields

bytes: usize

max_allowed: usize

RasterBufferMismatch

Raster buffer length does not match expected width * height * 4.

Fields

expected: usize

actual: usize

FallbackDisabled

Missing required fallback face when system fallback is disabled.

Fields

unshaped_byte_offset: usize

Trait Implementations

impl Clone for MacFontAdapterError

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for MacFontAdapterError

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

Formats the value using the given formatter.

impl Display for MacFontAdapterError

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

Formats the value using the given formatter.

impl Eq for MacFontAdapterError

impl Error for MacFontAdapterError

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<MacFontAdapterError> for NativeShapingError

fn from(err: MacFontAdapterError) -> Self

Converts to this type from the input type.

impl PartialEq for MacFontAdapterError

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for MacFontAdapterError