Enum mentat_query_algebrizer::BindingError

pub enum BindingError {
    NoBoundVariable,
    UnexpectedBinding,
    RepeatedBoundVariable,
    ExpectedBindRel,
    ExpectedBindRelOrBindColl,
    InvalidNumberOfBindings {
        number: usize,
        expected: usize,
    },
}

Variants

NoBoundVariableUnexpectedBindingRepeatedBoundVariableExpectedBindRel

Expected [[?x ?y]] but got some other type of binding. Mentat is deliberately more strict than Datomic: we won't try to make sense of non-obvious (and potentially erroneous) bindings.

ExpectedBindRelOrBindColl

Expected [[?x ?y]] or [?x ...] but got some other type of binding. Mentat is deliberately more strict than Datomic: we won't try to make sense of non-obvious (and potentially erroneous) bindings.

InvalidNumberOfBindings

Expected [?x1 … ?xN] or [[?x1 … ?xN]] but got some other number of bindings. Mentat is deliberately more strict than Datomic: we prefer placeholders to omission.

Fields of InvalidNumberOfBindings

number: usize
expected: usize

Trait Implementations

impl Clone for BindingError

fn clone(&self) -> BindingError

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for BindingError

fn fmt(&self, __arg_0: &mut Formatter) -> Result

Formats the value using the given formatter.

impl Eq for BindingError

impl PartialEq for BindingError

fn eq(&self, __arg_0: &BindingError) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, __arg_0: &BindingError) -> bool

This method tests for !=.