Enum BddError 

pub enum BddError {
    TooManyVariables(usize),
    MissingWitness,
    UnknownVariable(String),
    Limit(LimitError),
    BudgetExceeded {
        limit: usize,
    },
}

BDD 判定错误。

Variants

TooManyVariables(usize)

BDD 变量数超过 u16 上限。

MissingWitness

BDD 说可满足但取不到赋值（不应发生）。

UnknownVariable(String)

被量化的变量不在表达式里。

Limit(LimitError)

表达式超出资源预算。

BudgetExceeded

单个 BDD 的节点数超出预算。

Fields

limit: usize

上限。

Trait Implementations

impl Debug for BddError

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

Formats the value using the given formatter.

impl Display for BddError

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

Formats the value using the given formatter.

impl Error for BddError

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<BddError> for PolicyError

fn from(source: BddError) -> PolicyError

Converts to this type from the input type.

impl From<LimitError> for BddError

fn from(source: LimitError) -> BddError

Converts to this type from the input type.