Enum EvaluationFailure 

pub(crate) enum EvaluationFailure {
    SymbolDefinitionLoop {
        span: SimpleSpan,
        deps_in_order: OneOrMore<SymbolName>,
    },
    BlockTooLarge(SimpleSpan, MachineLimitExceededFailure),
    FailedToAssignIndexRegister(ExhaustedIndexRegisters),
    HereIsNotAllowedHere(SimpleSpan),
}

We failed while evaluating the value of a word (typically, the value of a word in the final assembled output).

Variants

SymbolDefinitionLoop

Evaluation failed because there was a loop in the definition of a symbol (i.e. in one of the equaities we needed to evaluate to determine the final result).

Fields

span: SimpleSpan

deps_in_order: OneOrMore<SymbolName>

BlockTooLarge(SimpleSpan, MachineLimitExceededFailure)

A block of the program is too large.

FailedToAssignIndexRegister(ExhaustedIndexRegisters)

More index values needed to be default-assigned than there are index registers in the TX-2 architecture.

HereIsNotAllowedHere(SimpleSpan)

We could not evaluate something because # was used in a context in which it was not allowed (an origin value).

Implementations

impl EvaluationFailure

pub(crate) fn into_program_error(self) -> ProgramError

Convert an instance of EvaluationFailure (which describes why an evaluation failed) into an instance of ProgramError (which describes why the user’s program cannot be assembled).

Trait Implementations

impl Debug for EvaluationFailure

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

Formats the value using the given formatter.

impl Display for EvaluationFailure

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

Formats the value using the given formatter.

impl Error for EvaluationFailure

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 EvaluationFailure

fn eq(&self, other: &EvaluationFailure) -> 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 Spanned for EvaluationFailure

fn span(&self) -> SimpleSpan

impl Eq for EvaluationFailure

impl StructuralPartialEq for EvaluationFailure