Enum CaretOperator 

pub enum CaretOperator {
    Unsupported,
    Exponent,
    BitwiseXor,
}

What the always-lexed ^ operator token means in a dialect — the operator-meaning analog of PipeOperator/DoubleAmpersand.

The ^ byte is a single-character self token that always tokenizes; this decides what an infix ^ binds to. PostgreSQL/DuckDB read it as arithmetic exponentiation, MySQL as bitwise XOR, and ANSI/SQLite give it no infix meaning at all. The three readings are mutually exclusive per dialect — one byte, one meaning — so a single meaning-enum makes the invalid “both power and XOR” state unrepresentable (conflict-exempt: the both-state is unrepresentable by construction, so no GrammarConflict registry variant governs the exclusion). It folds together what used to be an exponent_operator bool and a Caret-XOR spelling that prose alone kept apart. The precedence follows from the mapped BinaryOperator via the dialect’s BindingPowerTable (exponent at its own tier tighter than *; Caret XOR at the bitwise-XOR rank), so there is no separate override here.

Bitwise XOR’s other spelling # (PostgreSQL) rides a different byte on its own axis, FeatureSet::hash_bitwise_xor; ^ and # never share this enum.

Variants

Unsupported

^ is not an infix operator (ANSI/SQLite): it still lexes, but the parser ends the expression rather than binding it.

Exponent

^ is arithmetic exponentiation (BinaryOperator::Exponent, PostgreSQL/DuckDB) — its own precedence tier, tighter than *.

BitwiseXor

^ is bitwise XOR (BinaryOperator::BitwiseXor under the Caret spelling, MySQL).

Implementations

impl CaretOperator

pub const fn binary_operator(self) -> Option<BinaryOperator>

The canonical binary operator ^ maps to under this dialect, or None when the dialect gives ^ no infix meaning.

Trait Implementations

impl Clone for CaretOperator

fn clone(&self) -> CaretOperator

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for CaretOperator

impl Debug for CaretOperator

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

Formats the value using the given formatter.

impl Eq for CaretOperator

impl PartialEq for CaretOperator

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for CaretOperator