Enum BuildError 

pub enum BuildError {
    CanvasDimZero {
        which: &'static str,
    },
    CanvasDimTooLarge {
        which: &'static str,
        got: u32,
    },
    CanvasTooLarge {
        canvas_width: u32,
        canvas_height: u32,
    },
    PayloadTooLargeForChunk {
        got: usize,
    },
}

Errors raised by the §2.3–§2.7 builder helpers. Builders refuse inputs that would produce a file the corresponding parser would reject — the symmetry is deliberate so round-trips can’t be constructed-but-unparseable.

Variants

CanvasDimZero

A §2.7.1 canvas dimension is zero. The on-disk field is dim - 1, so a 0 dimension would underflow.

Fields

which: &'static str

Which dimension was zero — "width" or "height".

CanvasDimTooLarge

A §2.7.1 canvas dimension exceeds the 24-bit Minus One field’s maximum representable value (2^24).

Fields

which: &'static str

Which dimension overflowed.

got: u32

The offending 1-based dimension.

CanvasTooLarge

The product canvas_width * canvas_height exceeds the §2.7.1 2^32 - 1 cap.

Fields

canvas_width: u32

1-based canvas width.

canvas_height: u32

1-based canvas height.

PayloadTooLargeForChunk

The caller-supplied payload is larger than a §2.3 chunk’s Size field (a uint32) can address.

Fields

got: usize

Payload length the caller passed in.

Trait Implementations

impl Clone for BuildError

fn clone(&self) -> BuildError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for BuildError

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

Formats the value using the given formatter.

impl Display for BuildError

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

Formats the value using the given formatter.

impl Eq for BuildError

impl Error for BuildError

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<BuildError> for EncodeError

fn from(e: BuildError) -> Self

Converts to this type from the input type.

impl From<BuildError> for Error

fn from(e: BuildError) -> Self

Converts to this type from the input type.

impl PartialEq for BuildError

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for BuildError