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#![cfg_attr(not(feature = "prusti"), no_std)]
use proc_macro::TokenStream;

// -----------------------
// --- PRUSTI DISABLED ---

#[cfg(not(feature = "prusti"))]
#[proc_macro_attribute]
pub fn requires(_attr: TokenStream, tokens: TokenStream) -> TokenStream {
    tokens
}

#[cfg(not(feature = "prusti"))]
#[proc_macro_attribute]
pub fn invariant(_attr: TokenStream, tokens: TokenStream) -> TokenStream {
    tokens
}

#[cfg(not(feature = "prusti"))]
#[proc_macro_attribute]
pub fn ensures(_attr: TokenStream, tokens: TokenStream) -> TokenStream {
    tokens
}

#[cfg(not(feature = "prusti"))]
#[proc_macro_attribute]
pub fn after_expiry(_attr: TokenStream, tokens: TokenStream) -> TokenStream {
    tokens
}

#[cfg(not(feature = "prusti"))]
#[proc_macro_attribute]
pub fn assert_on_expiry(_attr: TokenStream, tokens: TokenStream) -> TokenStream {
    tokens
}

#[cfg(not(feature = "prusti"))]
#[proc_macro_attribute]
pub fn pure(_attr: TokenStream, tokens: TokenStream) -> TokenStream {
    tokens
}

#[cfg(not(feature = "prusti"))]
#[proc_macro_attribute]
pub fn trusted(_attr: TokenStream, tokens: TokenStream) -> TokenStream {
    tokens
}

#[cfg(not(feature = "prusti"))]
#[proc_macro_attribute]
pub fn verified(_attr: TokenStream, tokens: TokenStream) -> TokenStream {
    tokens
}

#[cfg(not(feature = "prusti"))]
#[proc_macro]
pub fn body_invariant(_tokens: TokenStream) -> TokenStream {
    TokenStream::new()
}

#[cfg(not(feature = "prusti"))]
#[proc_macro]
pub fn prusti_assert(_tokens: TokenStream) -> TokenStream {
    TokenStream::new()
}

#[cfg(not(feature = "prusti"))]
#[proc_macro]
pub fn prusti_assume(_tokens: TokenStream) -> TokenStream {
    TokenStream::new()
}

#[cfg(not(feature = "prusti"))]
#[proc_macro]
pub fn prusti_refute(_tokens: TokenStream) -> TokenStream {
    TokenStream::new()
}

#[cfg(not(feature = "prusti"))]
#[proc_macro_attribute]
pub fn refine_trait_spec(_attr: TokenStream, tokens: TokenStream) -> TokenStream {
    tokens
}

#[cfg(not(feature = "prusti"))]
#[proc_macro_attribute]
pub fn extern_spec(_attr: TokenStream, _tokens: TokenStream) -> TokenStream {
    TokenStream::new()
}

#[cfg(not(feature = "prusti"))]
#[proc_macro]
pub fn predicate(_tokens: TokenStream) -> TokenStream {
    TokenStream::new()
}

#[cfg(not(feature = "prusti"))]
#[proc_macro_attribute]
pub fn model(_attr: TokenStream, _tokens: TokenStream) -> TokenStream {
    TokenStream::new()
}

#[cfg(not(feature = "prusti"))]
#[proc_macro_attribute]
pub fn refine_spec(_attr: TokenStream, tokens: TokenStream) -> TokenStream {
    tokens
}

#[cfg(not(feature = "prusti"))]
#[proc_macro]
pub fn ghost(_tokens: TokenStream) -> TokenStream {
    TokenStream::new()
}

#[cfg(not(feature = "prusti"))]
#[proc_macro_attribute]
pub fn print_counterexample(_attr: TokenStream, tokens: TokenStream) -> TokenStream {
    tokens
}

#[cfg(not(feature = "prusti"))]
#[proc_macro_attribute]
pub fn terminates(_attr: TokenStream, _tokens: TokenStream) -> TokenStream {
    TokenStream::new()
}

#[cfg(not(feature = "prusti"))]
#[proc_macro]
pub fn body_variant(_tokens: TokenStream) -> TokenStream {
    TokenStream::new()
}

// ----------------------
// --- PRUSTI ENABLED ---

#[cfg(feature = "prusti")]
use prusti_specs::{rewrite_prusti_attributes, SpecAttributeKind};

#[cfg(feature = "prusti")]
#[proc_macro_attribute]
pub fn requires(attr: TokenStream, tokens: TokenStream) -> TokenStream {
    rewrite_prusti_attributes(SpecAttributeKind::Requires, attr.into(), tokens.into()).into()
}

#[cfg(feature = "prusti")]
#[proc_macro_attribute]
pub fn ensures(attr: TokenStream, tokens: TokenStream) -> TokenStream {
    rewrite_prusti_attributes(SpecAttributeKind::Ensures, attr.into(), tokens.into()).into()
}

#[cfg(feature = "prusti")]
#[proc_macro_attribute]
pub fn after_expiry(attr: TokenStream, tokens: TokenStream) -> TokenStream {
    rewrite_prusti_attributes(SpecAttributeKind::AfterExpiry, attr.into(), tokens.into()).into()
}

#[cfg(feature = "prusti")]
#[proc_macro_attribute]
pub fn assert_on_expiry(attr: TokenStream, tokens: TokenStream) -> TokenStream {
    rewrite_prusti_attributes(
        SpecAttributeKind::AssertOnExpiry,
        attr.into(),
        tokens.into(),
    )
    .into()
}

#[cfg(feature = "prusti")]
#[proc_macro_attribute]
pub fn pure(attr: TokenStream, tokens: TokenStream) -> TokenStream {
    rewrite_prusti_attributes(SpecAttributeKind::Pure, attr.into(), tokens.into()).into()
}

#[cfg(feature = "prusti")]
#[proc_macro_attribute]
pub fn trusted(attr: TokenStream, tokens: TokenStream) -> TokenStream {
    prusti_specs::trusted(attr.into(), tokens.into()).into()
}

#[cfg(feature = "prusti")]
#[proc_macro_attribute]
pub fn verified(attr: TokenStream, tokens: TokenStream) -> TokenStream {
    rewrite_prusti_attributes(SpecAttributeKind::Verified, attr.into(), tokens.into()).into()
}

#[cfg(feature = "prusti")]
#[proc_macro]
pub fn body_invariant(tokens: TokenStream) -> TokenStream {
    prusti_specs::body_invariant(tokens.into()).into()
}

#[cfg(feature = "prusti")]
#[proc_macro]
pub fn prusti_assert(tokens: TokenStream) -> TokenStream {
    prusti_specs::prusti_assertion(tokens.into()).into()
}

#[cfg(feature = "prusti")]
#[proc_macro]
pub fn prusti_assume(tokens: TokenStream) -> TokenStream {
    prusti_specs::prusti_assume(tokens.into()).into()
}

#[cfg(feature = "prusti")]
#[proc_macro]
pub fn prusti_refute(tokens: TokenStream) -> TokenStream {
    prusti_specs::prusti_refutation(tokens.into()).into()
}

#[cfg(feature = "prusti")]
#[proc_macro]
pub fn closure(tokens: TokenStream) -> TokenStream {
    prusti_specs::closure(tokens.into()).into()
}

#[cfg(feature = "prusti")]
#[proc_macro_attribute]
pub fn refine_trait_spec(attr: TokenStream, tokens: TokenStream) -> TokenStream {
    prusti_specs::refine_trait_spec(attr.into(), tokens.into()).into()
}

#[cfg(feature = "prusti")]
#[proc_macro_attribute]
pub fn extern_spec(attr: TokenStream, tokens: TokenStream) -> TokenStream {
    prusti_specs::extern_spec(attr.into(), tokens.into()).into()
}

#[cfg(feature = "prusti")]
#[proc_macro_attribute]
pub fn invariant(attr: TokenStream, tokens: TokenStream) -> TokenStream {
    prusti_specs::invariant(attr.into(), tokens.into()).into()
}

#[cfg(feature = "prusti")]
#[proc_macro]
pub fn predicate(tokens: TokenStream) -> TokenStream {
    prusti_specs::predicate(tokens.into()).into()
}

#[cfg(feature = "prusti")]
#[proc_macro_attribute]
pub fn model(_attr: TokenStream, tokens: TokenStream) -> TokenStream {
    prusti_specs::type_model(_attr.into(), tokens.into()).into()
}

#[cfg(feature = "prusti")]
#[proc_macro_attribute]
pub fn refine_spec(attr: TokenStream, tokens: TokenStream) -> TokenStream {
    rewrite_prusti_attributes(SpecAttributeKind::RefineSpec, attr.into(), tokens.into()).into()
}

#[cfg(feature = "prusti")]
#[proc_macro]
pub fn ghost(tokens: TokenStream) -> TokenStream {
    prusti_specs::ghost(tokens.into()).into()
}

#[cfg(feature = "prusti")]
#[proc_macro_attribute]
pub fn print_counterexample(attr: TokenStream, tokens: TokenStream) -> TokenStream {
    prusti_specs::print_counterexample(attr.into(), tokens.into()).into()
}

#[cfg(feature = "prusti")]
#[proc_macro_attribute]
pub fn terminates(attr: TokenStream, tokens: TokenStream) -> TokenStream {
    rewrite_prusti_attributes(SpecAttributeKind::Terminates, attr.into(), tokens.into()).into()
}

#[cfg(feature = "prusti")]
#[proc_macro]
pub fn body_variant(tokens: TokenStream) -> TokenStream {
    prusti_specs::body_variant(tokens.into()).into()
}

// Ensure that you've also crated a transparent `#[cfg(not(feature = "prusti"))]`
// version of your new macro above!