Enum EncodeError 

#[non_exhaustive]
pub enum EncodeError {
    DataTooLong {
        required_bits: Option<usize>,
        capacity_bits: usize,
    },
    InvalidData {
        mode: &'static str,
        byte_offset: usize,
    },
    TextNotRepresentable {
        byte_offset: usize,
        family: &'static str,
    },
    InvalidEciAssignment(u32),
    InvalidApplicationIndicator,
    InvalidVersionRange,
    UnsupportedMode {
        mode: &'static str,
        family: &'static str,
    },
    UnsupportedErrorCorrection {
        version: SymbolVersion,
        error_correction: SymbolErrorCorrection,
    },
    InvalidMask,
    InvalidStructuredAppendPartCount {
        count: usize,
    },
}

Errors returned while encoding a QR Code symbol.

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.

DataTooLong

The encoded bit stream exceeds the selected symbol capacity.

Fields

required_bits: Option<usize>

The exact number of bits the encoded data needs, or None when the encoder rejected the input before measuring it, for example from a capacity precheck or a character count over the indicator limit.

capacity_bits: usize

The number of data bits the selected symbols hold.

InvalidData

The input contains a byte that is not valid for the requested mode.

Fields

mode: &'static str

The name of the requested mode.

byte_offset: usize

The byte offset of the first invalid character in the input.

TextNotRepresentable

Available on crate feature micro-qr only.

The input cannot be represented by the selected symbol family.

Fields

byte_offset: usize

The byte offset of the character that cannot be represented.

family: &'static str

The name of the symbol family.

InvalidEciAssignment(u32)

Available on crate features qr or rmqr only.

The ECI assignment is outside the range supported by QR Code.

InvalidApplicationIndicator

Available on crate features qr or rmqr only.

The FNC1 second-position application indicator is invalid.

InvalidVersionRange

The selected version range is empty or invalid.

UnsupportedMode

Available on crate feature micro-qr only.

The selected symbol family does not support a requested mode.

Fields

mode: &'static str

The name of the unsupported mode.

family: &'static str

The name of the symbol family or version.

UnsupportedErrorCorrection

Available on crate feature micro-qr only.

The selected version does not support the requested error correction level.

Fields

version: SymbolVersion

The selected version.

error_correction: SymbolErrorCorrection

The requested error correction level.

InvalidMask

The requested mask number is outside the supported range.

InvalidStructuredAppendPartCount

Available on crate feature qr only.

A Structured Append sequence has fewer than one or more than 16 parts.

Fields

count: usize

The number of parts that was given.

Trait Implementations

impl Debug for EncodeError

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

Formats the value using the given formatter.

impl Display for EncodeError

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

Formats the value using the given formatter.

impl Error for EncodeError

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.