Method typ

src/expr/src/scalar.rs:1083–1101

(&self, column_types: &[ReprColumnType])

    }

    pub fn typ(&self, column_types: &[ReprColumnType]) -> ReprColumnType {
        match self {
            MirScalarExpr::Column(i, _name) => column_types[*i].clone(),
            MirScalarExpr::Literal(_, typ) => typ.clone(),
            MirScalarExpr::CallUnmaterializable(func) => func.output_type(),
            MirScalarExpr::CallUnary { expr, func } => func.output_type(expr.typ(column_types)),
            MirScalarExpr::CallBinary { expr1, expr2, func } => {
                func.output_type(&[expr1.typ(column_types), expr2.typ(column_types)])
            }
            MirScalarExpr::CallVariadic { exprs, func } => {
                func.output_type(exprs.iter().map(|e| e.typ(column_types)).collect())
            }
            MirScalarExpr::If { cond: _, then, els } => {
                let then_type = then.typ(column_types);
                let else_type = els.typ(column_types);
                then_type.union(&else_type).unwrap()
            }
        }
    }

    /// True iff the expression contains
    /// `UnmaterializableFunc::MzNow`.