Merge #370

370: Self params & type r=matklad a=flodiebold

This implements type inference for `self`, so field completion for methods taking `self` works now.

 - rename `IMPL_ITEM` to `IMPL_BLOCK` -- rustc calls the methods etc. inside an impl `ImplItem`s, and the impl itself doesn't define an item, so I thought this name was clearer.
 - add HIR for impl blocks -- we collect all impls in a crate at once, so we can go from methods to containing impls, and since we will later also need to find all impls for a certain type (which may be anywhere in the crate, I think?). We could be more lazy here, but I don't know if it's worth the complexity.
 - resolve `self` and `Self` during type inference
 - refactor a bit in ty.rs as well

Co-authored-by: Florian Diebold <[email protected]>

1 files changed, 6 insertions, 0 deletions

diff --git a/crates/ra_hir/src/ty/tests/data/0007_self.txt b/crates/ra_hir/src/ty/tests/data/0007_self.txt
new file mode 100644
index 000000000..db4ba17d0
--- /dev/null
+++ b/crates/ra_hir/src/ty/tests/data/0007_self.txt
@@ -0,0 +1,6 @@
+[50; 54) 'self': &S
+[34; 38) 'self': &S
+[40; 61) '{     ...     }': ()
+[88; 109) '{     ...     }': ()
+[98; 102) 'self': &S
+[75; 79) 'self': &S