Struct FunctionParamDefault 

pub struct FunctionParamDefault<X: Extension = NoExt> {
    pub spelling: FunctionParamDefaultSpelling,
    pub value: Expr<X>,
    pub meta: Meta,
}

A routine parameter’s default-value clause: the spelling (DEFAULT keyword vs =) and the value Expr. PostgreSQL’s grammar spells one production two ways — func_arg_with_default: func_arg DEFAULT a_expr | func_arg '=' a_expr — so the tag records which the source used and the value is a live SQL expression reusing Expr rather than a re-derived literal grammar.

sqlparser-rs models the same clause as a bare default_expr: Option<Expr> and always re-renders it as = <expr>, normalizing the DEFAULT spelling away; this AST instead carries the fieldless FunctionParamDefaultSpelling tag so both forms round-trip verbatim (the spelling-fidelity doctrine, as for EqualsSpelling).

Fields

spelling: FunctionParamDefaultSpelling

Exact source spelling retained for faithful rendering.

value: Expr<X>

Value supplied by this syntax.

meta: Meta

Source location and node identity.

Trait Implementations

impl<X: Clone + Extension> Clone for FunctionParamDefault<X>

fn clone(&self) -> FunctionParamDefault<X>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<X: Debug + Extension> Debug for FunctionParamDefault<X>

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

Formats the value using the given formatter.

impl<'de, X> Deserialize<'de> for FunctionParamDefault<X>

where X: Deserialize<'de> + Extension,

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl<X: Eq + Extension> Eq for FunctionParamDefault<X>

impl<X: Hash + Extension> Hash for FunctionParamDefault<X>

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<X: PartialEq + Extension> PartialEq for FunctionParamDefault<X>

fn eq(&self, other: &FunctionParamDefault<X>) -> bool

Equality operator ==.

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

Inequality operator !=.

impl<X: Extension + Render> Render for FunctionParamDefault<X>

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

Return the render for this value.

fn operand_binding_power(&self) -> Option<BindingPower>

The binding power this node contributes when it appears as an operand, or None (the default) for a self-delimiting node — an atom, call, or constructor — that never needs parentheses.

impl<X> Serialize for FunctionParamDefault<X>

where X: Serialize + Extension,

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl<X: Extension> Spanned for FunctionParamDefault<X>

fn span(&self) -> Span

Return the span for this value.

impl<X: PartialEq + Extension> StructuralPartialEq for FunctionParamDefault<X>