Enum Error 

pub enum Error {
    UnexpectedChar {
        at: Position,
        ch: char,
    },
    UnexpectedEnd {
        expected: &'static str,
    },
    UnexpectedToken {
        at: Position,
        expected: &'static str,
        found: String,
    },
    UnboundVariable {
        name: VarName,
    },
    FuelExhausted {
        limit: u64,
    },
    DanglingReference {
        address: Address,
    },
    NotAReference {
        found: String,
    },
    NotAFunction {
        found: String,
    },
}

All errors in lambda-ref-cat.

Variants

UnexpectedChar

The lexer encountered a character that does not begin any token.

Fields

at: Position

Byte offset in the source where the character was found.

ch: char

The offending character.

UnexpectedEnd

Input ended while the parser still required more tokens.

Fields

expected: &'static str

Short description of what was expected.

UnexpectedToken

The parser found a token that does not satisfy the current production.

Fields

at: Position

Byte offset where the offending token began.

expected: &'static str

Short description of what was expected.

found: String

Rendering of the token that was actually found.

UnboundVariable

Evaluation referenced a variable not bound in the current environment.

Fields

name: VarName

The unbound name.

FuelExhausted

Evaluation exceeded its step budget.

Fields

limit: u64

The configured step limit that was hit.

DanglingReference

A dereference or assignment targeted an address not present in the heap.

Fields

address: Address

The address that could not be resolved.

NotAReference

Dereference or assignment was attempted on a value that is not a cell reference.

Fields

found: String

Rendering of the offending non-reference value.

NotAFunction

Application was attempted with a non-function value in the function position.

Fields

found: String

Rendering of the offending non-function value.

Trait Implementations

impl Clone for Error

fn clone(&self) -> Error

Returns a duplicate of the value.

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

Performs copy-assignment from source.

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, f: &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 PartialEq for Error

fn eq(&self, other: &Error) -> 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 Eq for Error

impl StructuralPartialEq for Error