Struct QueryDialect 

pub struct QueryDialect {
    pub name: &'static str,
    pub and_tokens: &'static [&'static str],
    pub or_tokens: &'static [&'static str],
    pub not_tokens: &'static [&'static str],
    pub implicit_and: bool,
}

Boolean-syntax configuration for a query dialect. The reverse analogue of the boolean-operator half of TextQueryConfig: a pure data table that drives the shared tokenizer and boolean parser.

Leaf syntax (field predicates, ranges, quoting, wildcards) is dialect specific and handled by Frontend::parse_atom, not here.

Fields

name: &'static str

Human-readable dialect name ("lucene").

and_tokens: &'static [&'static str]

Tokens that mean logical AND (e.g. ["AND", "&&"]).

or_tokens: &'static [&'static str]

Tokens that mean logical OR (e.g. ["OR", "||"]).

not_tokens: &'static [&'static str]

Tokens (and prefixes) that mean logical NOT (e.g. ["NOT", "!"]).

implicit_and: bool

Whether adjacent terms with no explicit operator are ANDed (true) or ORed (false).

Trait Implementations

impl Clone for QueryDialect

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for QueryDialect

impl Debug for QueryDialect

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

Formats the value using the given formatter.