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use stellar_xdr::ScStatic;

use crate::{decl_tagged_val_wrapper_methods, impl_wrapper_from, Env, EnvVal, RawVal, Tag};

/// Wrapper for a [RawVal] that is tagged with [Tag::Static], interpreting the
/// [RawVal]'s body as a 32-bit value from a reserved set of "static" values
/// corresponding to the enumerated cases of [ScStatic].
#[derive(Copy, Clone)]
pub struct Static(RawVal);

decl_tagged_val_wrapper_methods!(Static);

impl_wrapper_from!((), Static);
impl_wrapper_from!(bool, Static);

impl Static {
    // NB: we don't provide a "get_type" to avoid casting a bad bit-pattern into
    // an ScStatic. Instead we provide an "is_type" to check any specific
    // bit-pattern.

    #[inline(always)]
    pub const fn is_type(&self, ty: ScStatic) -> bool {
        self.as_raw().has_minor(ty as u32)
    }
}