fn render_literal()

in uniffi_bindgen/src/bindings/swift/gen_swift/primitives.rs [13:65]

• 49 lines of code
• 1 McCabe index (conditional complexity)

fn render_literal(literal: &Literal) -> Result<String> {
    fn typed_number(type_: &Type, num_str: String) -> Result<String> {
        let unwrapped_type = match type_ {
            Type::Optional { inner_type } => inner_type,
            t => t,
        };
        Ok(match unwrapped_type {
            // special case Int32.
            Type::Int32 => num_str,
            // otherwise use constructor e.g. UInt8(x)
            Type::Int8
            | Type::UInt8
            | Type::Int16
            | Type::UInt16
            | Type::UInt32
            | Type::Int64
            | Type::UInt64
            | Type::Float32
            | Type::Float64 =>
            // XXX we should pass in the codetype itself.
            {
                format!(
                    "{}({num_str})",
                    super::SwiftCodeOracle.find(type_).type_label()
                )
            }
            _ => bail!("Unexpected literal: {num_str} for type: {type_:?}"),
        })
    }

    Ok(match literal {
        Literal::Boolean(v) => format!("{v}"),
        Literal::String(s) => format!("\"{s}\""),
        Literal::Int(i, radix, type_) => typed_number(
            type_,
            match radix {
                Radix::Octal => format!("0o{i:o}"),
                Radix::Decimal => format!("{i}"),
                Radix::Hexadecimal => format!("{i:#x}"),
            },
        )?,
        Literal::UInt(i, radix, type_) => typed_number(
            type_,
            match radix {
                Radix::Octal => format!("0o{i:o}"),
                Radix::Decimal => format!("{i}"),
                Radix::Hexadecimal => format!("{i:#x}"),
            },
        )?,
        Literal::Float(string, type_) => typed_number(type_, string.clone())?,
        _ => bail!("Invalid literal: {literal:?}"),
    })
}