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//! Module that implements the public interface to the Stable MIR.
//!
//! This module shall contain all type definitions and APIs that we expect 3P tools to invoke to
//! interact with the compiler.
//!
//! The goal is to eventually move this module to its own crate which shall be published on
//! [crates.io](https://crates.io).
//!
//! ## Note:
//!
//! There shouldn't be any direct references to internal compiler constructs in this module.
//! If you need an internal construct, consider using `rustc_internal` or `rustc_smir`.
pub mod mir;
/// Use String for now but we should replace it.
pub type Symbol = String;
/// The number that identifies a crate.
pub type CrateNum = usize;
/// A unique identification number for each item accessible for the current compilation unit.
pub type DefId = usize;
/// A list of crate items.
pub type CrateItems = Vec<CrateItem>;
/// Holds information about a crate.
#[derive(Clone, PartialEq, Eq, Debug)]
pub struct Crate {
pub(crate) id: CrateNum,
pub name: Symbol,
pub is_local: bool,
}
/// Holds information about an item in the crate.
/// For now, it only stores the item DefId. Use functions inside `rustc_internal` module to
/// use this item.
#[derive(Clone, PartialEq, Eq, Debug)]
pub struct CrateItem(pub(crate) DefId);
impl CrateItem {
pub fn body(&self) -> mir::Body {
crate::rustc_smir::mir_body(self)
}
}
/// Return the function where execution starts if the current
/// crate defines that. This is usually `main`, but could be
/// `start` if the crate is a no-std crate.
pub fn entry_fn() -> Option<CrateItem> {
crate::rustc_smir::entry_fn()
}
/// Access to the local crate.
pub fn local_crate() -> Crate {
crate::rustc_smir::local_crate()
}
/// Try to find a crate with the given name.
pub fn find_crate(name: &str) -> Option<Crate> {
crate::rustc_smir::find_crate(name)
}
/// Try to find a crate with the given name.
pub fn external_crates() -> Vec<Crate> {
crate::rustc_smir::external_crates()
}
/// Retrieve all items in the local crate that have a MIR associated with them.
pub fn all_local_items() -> CrateItems {
crate::rustc_smir::all_local_items()
}
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