Enum NativeShapingError 

pub enum NativeShapingError {
    ContextBudgetExceeded {
        length: usize,
        max_allowed: usize,
    },
    EmptyText,
    InvalidByteRange {
        offset: usize,
        text_len: usize,
    },
    MidScalarBoundary {
        offset: usize,
    },
    FallbackRequired {
        unshaped_byte_offset: usize,
    },
    PlatformUnavailable(String),
    AdapterError(String),
}

Errors arising from native shaping operations.

Variants

ContextBudgetExceeded

The input text exceeds the maximum allowable context budget for a single call (Plan §10.9).

Fields

length: usize

Actual byte length of the input.

max_allowed: usize

Maximum allowed bytes under the active work budget.

EmptyText

The input text was empty.

InvalidByteRange

An offset was out of bounds for the input text.

Fields

offset: usize

Out of bounds offset.

text_len: usize

Total text length.

MidScalarBoundary

An offset fell within a UTF-8 scalar sequence rather than on a scalar boundary.

Fields

offset: usize

Invalid offset.

FallbackRequired

The text contains characters missing from the primary font, but system fallback was disabled.

Fields

unshaped_byte_offset: usize

Offset of the unshaped character in the original bytes.

PlatformUnavailable(String)

The native platform bridge or required system framework is unavailable.

AdapterError(String)

The platform shaper reported an internal error during layout.

Trait Implementations

impl Clone for NativeShapingError

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 NativeShapingError

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

Formats the value using the given formatter.

impl Display for NativeShapingError

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

Formats the value using the given formatter.

impl Eq for NativeShapingError

impl Error for NativeShapingError

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 NativeShapingError

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for NativeShapingError