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Rollup merge of #105681 - tshepang:doc-mir-visit, r=Nilstrieb

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some fixes/improvements to mir::visit module
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Matthias Krüger 2023-01-03 17:12:10 +01:00 committed by GitHub
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compiler/rustc_middle/src/mir/visit.rs
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@ -3,15 +3,15 @@
//! ## Overview
//!
//! There are two visitors, one for immutable and one for mutable references,
//! but both are generated by the following macro. The code is written according
//! to the following conventions:
//! but both are generated by the `make_mir_visitor` macro.
//! The code is written according to the following conventions:
//!
//! - introduce a `visit_foo` and a `super_foo` method for every MIR type
//! - `visit_foo`, by default, calls `super_foo`
//! - `super_foo`, by default, destructures the `foo` and calls `visit_foo`
//!
//! This allows you as a user to override `visit_foo` for types are
//! interested in, and invoke (within that method) call
//! This allows you to override `visit_foo` for types you are
//! interested in, and invoke (within that method call)
//! `self.super_foo` to get the default behavior. Just as in an OO
//! language, you should never call `super` methods ordinarily except
//! in that circumstance.