Enum HashSite 

pub enum HashSite<'a> {
    Native,
    NativeIn(&'a str),
    Helper(&'a str),
}

Where the hash itself is spelled.

Variants

Native

Inline this engine’s own hash spelling, from SidSpelling::hash.

NativeIn(&'a str)

Inline this engine’s own hash spelling, in the schema Razeri installed it in — SidPrerequisiteHome::Schema.

The schema, a dot, and then SidSpelling::hash exactly as Native writes it. So a dialect that names a home owes a hash whose opening text BEGINS with the function’s own name: razeri_xxh64( qualifies to razeri.razeri_xxh64(, while a spelling that opened with a cast — CAST(xxHash64( — would put the schema in front of the cast and name nothing. Every engine that opens with a cast has a server-global function and names no home, which is why the two facts have never met.

Helper(&'a str)

Call the HELPER_FUNCTION_NAME function by this — possibly schema-qualified — name. Its body is the HashSite::Native spelling, so the two sites are the same derivation.

The qualifier is the function’s home, not the caller’s schema. One function is created per deployment unit, so a call from any other schema of that unit has to name the schema that has it. A caller that qualifies with its own schema names a function nothing created.

Trait Implementations

impl<'a> Clone for HashSite<'a>

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'a> Copy for HashSite<'a>

impl<'a> Debug for HashSite<'a>

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

Formats the value using the given formatter.