Enum Error 

pub enum Error {
    BadNode,
    BadVar,
    MissingVar(Var),
    NotAVar,
    NotAConst,
    EmptyContext,
    EmptyMap,
    UnknownOpcode(String),
    UnknownVariable(String),
    EmptyFile,
    BadChoiceSlice(usize, usize),
    MismatchedSlices,
    BadVarSlice(usize, usize),
    BadVarIndex(usize, usize),
    SingularMatrix(&'static str),
    IoError(Error),
    BadTileSize(usize, usize),
    BadTileOrder(usize, usize),
    EmptyTileSizes,
}

Universal error type for Fidget

Variants

BadNode

Node is not present in this Context

BadVar

Variable is not present in this Context

MissingVar(Var)

Variable is missing in the evaluation map

NotAVar

The given node does not have an associated variable

NotAConst

The given node is not a constant

EmptyContext

Context is empty

EmptyMap

IndexMap is empty

UnknownOpcode(String)

Unknown opcode {0}

UnknownVariable(String)

Unknown variable {0}

EmptyFile

Empty file

BadChoiceSlice(usize, usize)

Choice slice length does not match choice count

MismatchedSlices

Variable slice lengths are mismatched

BadVarSlice(usize, usize)

Variable slice length does not match expected count

BadVarIndex(usize, usize)

Variable index exceeds max var index for this tape

SingularMatrix(&'static str)

Could not solve for matrix pseudo-inverse

IoError(Error)

IO error; see inner code for details

BadTileSize(usize, usize)

Each tile must be divisible by subsequent tiles

BadTileOrder(usize, usize)

Tile size list must be in descending order

EmptyTileSizes

Tile size list must not be empty

Trait Implementations

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, __formatter: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

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 From<Error> for Error

fn from(source: Error) -> Self

Converts to this type from the input type.