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103 Commits

Author SHA1 Message Date
Florian Diebold
fe1dfd2b20 Refactor some more 
Type-relative paths (`<T>::foo`) also need to work in type context, for example
`<T>::Item` is legal. So rather than returning the type ref from the resolver
function, just check it before.
 2019-09-17 19:47:45 +02:00
Florian Diebold
406280e52f Refactor associated item resolution more 
When resolving an associated item in value namespace, use the `Ty` lowering code
for the segments before the last instead of replicating it.
 2019-09-17 19:47:45 +02:00
Florian Diebold
913ab1ec0a Resolve assoc types on type parameters 
E.g. `fn foo<T: Iterator>() -> T::Item`. It seems that rustc does this only for
type parameters and only based on their bounds, so we also only consider traits
from bounds.
 2019-09-17 19:47:45 +02:00
Florian Diebold
dc935be1b5 Support bare Trait without dyn 2019-09-14 10:20:41 +02:00
Aleksey Kladov
51e2d76b98 Specify desirable namespace when calling resolve 
That way, we are able to get rid of a number of unreachable statements
 2019-09-13 16:24:10 +03:00
Aleksey Kladov
114a1b878e rename AdtDef -> Adt 2019-09-13 00:34:52 +03:00
Aleksey Kladov
bcf30d389c generalize impl_froms to nested enums 2019-09-13 00:31:04 +03:00
Aleksey Kladov
45117c6388 make various enums "inherit" from AdtDef 2019-09-13 00:10:16 +03:00
Aleksey Kladov
63e1e63a91 start cleaning up the resolution 
Nameres related types, like `PerNs<Resolution>`, can represent
unreasonable situations, like a local in a type namespace. We should
clean this up, by requiring that call-site specifies the kind of
resolution it expects.
 2019-09-12 21:34:22 +03:00
Aleksey Kladov
6021a2a83a cleanup hir db imports 2019-09-08 09:55:12 +03:00
Florian Diebold
60bdb66ef2 Lower bounds on trait definition, and resolve assoc types from super traits 2019-09-07 14:31:43 +02:00
Florian Diebold
b8c1e402fa Make type walking infrastructure a bit nicer 
If/when we switch to using Chalk's Ty, we'll need to replace this by its `Fold`
trait, but I didn't want to import the whole thing just yet.
 2019-09-03 14:00:35 +02:00
Florian Diebold
741e350d4b Add support for associated type bindings (where Trait<Type = X>) 2019-09-03 14:00:35 +02:00
Florian Diebold
16a7d8cc85 Add impl Trait and dyn Trait types 
- refactor bounds handling in the AST a bit
 - add HIR for bounds
 - add `Ty::Dyn` and `Ty::Opaque` variants and lower `dyn Trait` / `impl Trait`
   syntax to them
 2019-08-22 19:33:00 +02:00
Florian Diebold
6265497523 Normalize associated types during inference 2019-08-12 21:43:00 +02:00
Florian Diebold
22724f37f3 Lower fully qualified associated type paths 
I.e. `<T as Trait>::Foo`.
 2019-08-12 21:43:00 +02:00
Florian Diebold
0a20770f46 Some renamings for clarity 2019-07-14 18:22:47 +02:00
Florian Diebold
b1b12072ed Start handling environment in trait resolution 
I.e. if we are inside a function with some where clauses, we assume these where
clauses hold.
 2019-07-08 21:20:17 +02:00
Florian Diebold
f854a29c9a Make EnumVariant a GenericDef and simplify some code 2019-07-06 17:43:13 +02:00
Florian Diebold
065d398701 Add trait obligations for where clauses when calling functions/methods 
E.g. if we call `foo<T: Into<u32>>(x)`, that adds an obligation that `x:
Into<u32>`, etc.
 2019-07-06 17:34:05 +02:00
Aleksey Kladov
1834bae5b8 allow rustfmt to reorder imports 
This wasn't a right decision in the first place, the feature flag was
broken in the last rustfmt release, and syntax highlighting of imports
is more important anyway
 2019-07-04 23:09:09 +03:00
Aleksey Kladov
0caec7d250 rename XSignature -> XData 2019-06-18 20:20:08 +03:00
Florian Diebold
49489dc20c Add basic infrastructure for assoc type projection 2019-06-15 18:21:23 +02:00
Aleksey Kladov
780e1a365b somewhat better name 2019-06-08 18:38:14 +03:00
Aleksey Kladov
c6ee9d681c add tests for primitive types 2019-05-30 15:14:11 +03:00
Aleksey Kladov
97158f5c8a add built-in types to scopes 2019-05-30 15:03:58 +03:00
Aleksey Kladov
e6545cc647 add ModuleDef::BuiltInType 2019-05-30 14:06:28 +03:00
Aleksey Kladov
5d54aa6781 add union to code_model 2019-05-23 20:18:47 +03:00
Aleksey Kladov
4ca8331933 remove minor code duplication 2019-05-21 01:02:29 +03:00
Edwin Cheng
3fc344b9f1 Use normal iteration instead of walk_mut 2019-05-20 17:48:58 +08:00
Edwin Cheng
d4dc879415 Add infer for generic default type 2019-05-19 21:08:16 +08:00
Florian Diebold
50bbf9eb09 Handle where clauses in trait solving 2019-05-11 16:21:20 +02:00
Florian Diebold
a4eb1a546c Differentiate Tuple / FnPtr type constructors by cardinality 
This is necessary because Chalk (reasonably) expects each 'struct' to know how
many type parameters it takes.
 2019-05-04 19:11:21 +02:00
Florian Diebold
b9c0c2abb7 Chalk integration 
- add proper canonicalization logic
 - add conversions from/to Chalk IR
 2019-05-04 18:18:30 +02:00
Florian Diebold
8bcbcc454c Extract generic_params method to a HasGenericParams trait 2019-04-14 13:07:45 +02:00
Florian Diebold
9339241b78 Some cleanup 2019-04-14 11:28:53 +02:00
Florian Diebold
a1ed53a4f1 More trait infrastructure 
- make it possible to get parent trait from method
 - add 'obligation' machinery for checking that a type implements a
   trait (and inferring facts about type variables from that)
 - handle type parameters of traits (to a certain degree)
 - improve the hacky implements check to cover enough cases to exercise the
   handling of traits with type parameters
 - basic canonicalization (will probably also be done by Chalk)
 2019-04-14 11:28:53 +02:00
Florian Diebold
413c87f155 Get substs for trait refs in impl blocks 2019-04-14 11:28:53 +02:00
Aleksey Kladov
4fd8cfd6ad replace todo with fixme 2019-03-23 11:07:09 +03:00
yanchith
504c8c7c2e Refactor primitive types into more orthogonal representation 2019-03-22 10:09:35 +01:00
Florian Diebold
f10f5a81b3 TypeName => TypeCtor 2019-03-21 22:20:03 +01:00
Florian Diebold
8a5fbf4713 Remove the old variants replaced by Ty::Apply 2019-03-21 22:17:00 +01:00
Florian Diebold
bc7752e527 Represent FnPtr and Tuple using Substs 2019-03-21 22:11:53 +01:00
Aleksey Kladov
f5165af9a7 make Name::new private 2019-03-20 22:33:26 +03:00
Florian Diebold
7faae12311 Remove FnSig from FnDef type 
It doesn't need to be in there since it's just information from the def. Another
step towards aligning Ty with Chalk's representation.
 2019-03-16 17:29:55 +01:00
Florian Diebold
a9ddaba905 Refactor FnSig a bit 2019-03-16 17:21:32 +01:00
Florian Diebold
c5ee60e05b Replace Display by a pretty printing trait for Ty 
This allows removing the names from Adt and FnDef (and more later), as a first
step towards aligning more with chalk's Ty :)
 2019-03-16 16:36:59 +01:00
Ville Penttinen
29f93a7906 Add static type inference 2019-02-25 10:55:23 +02:00
Ville Penttinen
18b0bd9bff Add const type inference 2019-02-25 10:51:46 +02:00
Florian Diebold
bd8ed644e4 Rename Type => TypeAlias 2019-02-24 21:36:49 +01:00
Florian Diebold
5d72b96988 Implement support for type aliases 2019-02-24 20:54:04 +01:00
Florian Diebold
82fe7b77a3 Refactor associated method resolution a bit and make it work with generics 2019-02-23 23:00:02 +01:00
Florian Diebold
dcfb4ee702 Split ty.rs into several modules 
It was just getting too big. We now have:

 - ty: the `Ty` enum and helpers
 - ty::infer: actual type inference
 - ty::lower: lowering from HIR to `Ty`
 - ty::op: helpers for binary operations, currently
 2019-02-23 15:36:38 +01:00