mirror
/
rustc-dev-guide
mirror of https://github.com/rust-lang/rustc-dev-guide.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

add a bit about def path (#548)

This commit is contained in:
Who? Me?! 2019-12-31 06:46:18 -06:00 committed by Santiago Pastorino
parent 423808fb45
commit e668a1ff29
1 changed files with 6 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
src/hir.md
View File

@ -102,6 +102,12 @@ sorts of identifiers in active use:
[`BodyId`]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc/hir/struct.BodyId.html
[`NodeId`]: https://doc.rust-lang.org/nightly/nightly-rustc/syntax/ast/struct.NodeId.html
We also have an internal map to go from `DefId` to what’s called "Def path". "Def path" is like a
module path but a bit more rich. For example, it may be `crate::foo::MyStruct` that identifies
this definition uniquely. It’s a bit different than a module path because it might include a type
parameter `T`, which you can't write in normal rust, like `crate::foo::MyStruct::T`. These are used
in incremental compilation.
### The HIR Map
Most of the time when you are working with the HIR, you will do so via