cairo-native 0.9.0-rc.7

A compiler to convert Cairo's IR Sierra code to MLIR and execute it.
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//! # Box type
//!
//! The type box for a given type `T`.
//!
//! ## Layout
//!
//! Its layout is that of whatever it wraps. In other words, if it was Rust it would be equivalent
//! to the following:
//!
//! ```
//! #[repr(transparent)]
//! pub struct Box<T>(pub T);
//! ```

use super::WithSelf;
use crate::{error::Result, metadata::MetadataStorage, utils::ProgramRegistryExt};
use cairo_lang_sierra::{
    extensions::{
        core::{CoreLibfunc, CoreType},
        types::InfoAndTypeConcreteType,
    },
    program_registry::ProgramRegistry,
};
use melior::{
    dialect::llvm,
    ir::{Module, Type},
    Context,
};

/// Build the MLIR type.
///
/// Check out [the module](self) for more info.
pub fn build<'ctx>(
    context: &'ctx Context,
    module: &Module<'ctx>,
    registry: &ProgramRegistry<CoreType, CoreLibfunc>,
    metadata: &mut MetadataStorage,
    info: WithSelf<InfoAndTypeConcreteType>,
) -> Result<Type<'ctx>> {
    // Ensure the inner type is built.
    registry.build_type(context, module, metadata, &info.ty)?;

    Ok(llvm::r#type::pointer(context, 0))
}