Function format

aiscript-vm/src/builtins/format.rs:6–21

Format function that implements Python-like string formatting

(
    state: &mut State<'gc>,
    args: Vec<Value<'gc>>,
)

/// Format function that implements Python-like string formatting
pub(super) fn format<'gc>(
    state: &mut State<'gc>,
    args: Vec<Value<'gc>>,
) -> Result<Value<'gc>, VmError> {
    if args.is_empty() {
        return Err(VmError::RuntimeError(
            "format() missing required argument.".into(),
        ));
    }

    let template = args[0].as_string()?.to_str().unwrap();
    let format_args = &args[1..];

    let result = format_string(template, format_args)?;
    Ok(Value::IoString(Gc::new(state, result)))
}

#[derive(Debug, Default)]
struct FormatSpec {