Enum TraceError 

pub enum TraceError {
    UnsupportedEdge(&'static str),
    UnassignedRead(LocalVarId),
    EndWithoutBegin(FirstMatchId),
    BeginWhileOpen(FirstMatchId),
    MatchedWithoutClocks,
    NestedMatched,
    BadClocks,
    BadTimeline,
    NotASequence,
}

An automaton shape this interpreter refuses to run, never a guess.

Variants

UnsupportedEdge(&'static str)

An edge kind with no meaning outside the full engine (abort edges belong to T20 and later; the local-variable edges are only interpreted by attempt_with_locals, which has a frame to run them on).

UnassignedRead(LocalVarId)

A leaf read local variable var while it was unassigned (16.10): the builder rejects every read it can prove unassigned, so this is a malformed automaton or an evaluator reading a slot it was not given.

EndWithoutBegin(FirstMatchId)

A Transition::FirstMatchEnd reached by a thread that never took the group’s Transition::FirstMatchBegin: a malformed automaton.

BeginWhileOpen(FirstMatchId)

A Transition::FirstMatchBegin reached while the group is already open on the same thread: a malformed automaton (a region cannot contain itself).

MatchedWithoutClocks

A .matched end point run without a clock model: its status depends on the two clocks’ tick times, which only attempt_with_clocks has.

NestedMatched

A .matched end point inside an instance that is itself being run in another clock’s tick space: the model has one destination and one source clock, so a third is refused rather than guessed.

BadClocks

The clock model’s tick times are not strictly increasing.

BadTimeline

A Timeline’s tick list is not strictly increasing, or names a step at or past the trace’s real length.

NotASequence

crate::sva::property::Evaluator::root_sequence_matches on a property whose root is not a bare sequence (a cover sequence always has one).

Trait Implementations

impl Clone for TraceError

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for TraceError

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

Formats the value using the given formatter.

impl Display for TraceError

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

Formats the value using the given formatter.

impl Eq for TraceError

impl Error for TraceError

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 TraceError

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for TraceError