Enum EvalError 

pub enum EvalError {
    ArithmeticTrap(String),
    AssertionFailed(String),
    InvariantViolation(String),
    NilAccess(String),
    UnwrapError(String),
    UndefinedVariable(String),
    UndefinedAction(String),
    TypeMismatch(String),
    StdlibError(String),
    UnknownFunction(String),
    GasExhausted,
    Return(Value),
    Runtime(String),
}

Evaluation error — runtime traps, assertion failures, invariant violations.

Variants

ArithmeticTrap(String)

Division by zero, sqrt of negative, overflow, etc.

AssertionFailed(String)

core.assert failure

InvariantViolation(String)

Invariant check failed after action commit

NilAccess(String)

Nil access: nil.field, nil[i], nil used as bool, etc.

UnwrapError(String)

? on an Err variant

UndefinedVariable(String)

Unknown variable

UndefinedAction(String)

Unknown action

TypeMismatch(String)

Type mismatch at runtime

StdlibError(String)

Stdlib call error

UnknownFunction(String)

Unknown module or function

GasExhausted

Gas exhaustion

Return(Value)

return statement (used internally for control flow)

Runtime(String)

Generic runtime error

Trait Implementations

impl Clone for EvalError

fn clone(&self) -> EvalError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for EvalError

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

Formats the value using the given formatter.

impl Display for EvalError

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

Formats the value using the given formatter.

impl Error for EvalError

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.