Enum FunctionParamMode 

pub enum FunctionParamMode {
    In,
    Out,
    InOut,
    Variadic,
}

A routine parameter’s argument mode — PostgreSQL’s arg_class prefix (func_arg: arg_class param_name func_type | …). IN is the default and may be omitted; OUT/INOUT mark output parameters; VARIADIC marks a trailing array-spread parameter. A fieldless Copy tag whose span rides the owning FunctionParam (the FunctionParamDefaultSpelling precedent): it records only the written mode so it round-trips.

PostgreSQL admits the mode either before or after the name (IN a int and a IN int both parse); this models the documented, canonical mode-first spelling (which sqlparser-rs’s ArgMode also targets) and adds Variadic, which sqlparser-rs omits but real PostgreSQL requires. The rarer name-first spelling is a deliberate parse-surface boundary — no corpus exercises it and PostgreSQL itself normalizes the two orders to one AST.

Variants

In

IN — an input parameter (the default when omitted).

Out

OUT — an output parameter.

InOut

INOUT — an input/output parameter.

Variadic

VARIADIC — a trailing array-spread parameter.

Trait Implementations

impl Clone for FunctionParamMode

fn clone(&self) -> FunctionParamMode

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for FunctionParamMode

impl Debug for FunctionParamMode

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for FunctionParamMode

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for FunctionParamMode

impl Hash for FunctionParamMode

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for FunctionParamMode

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for FunctionParamMode

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for FunctionParamMode