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3894eb77d8
1286: Add infer for generic default type r=flodiebold a=edwin0cheng
This PR add infer support for generic default type:
```
struct Gen<T=u32> {
val: T
}
```
* add the (unresolved) defaults from the definition to GenericParams
* add a query generic_defaults that resolves those defaults to types and returns a Substs
* add the missing type in `substs_from_path_segment`
* add tests
based on the idea in this [comment](https://github.com/rust-analyzer/rust-analyzer/issues/1099#issuecomment-484206279)
Co-authored-by: Edwin Cheng <edwin0cheng@gmail.com>
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| .. | ||
| gen_lsp_server | ||
| ra_arena | ||
| ra_assists | ||
| ra_batch | ||
| ra_cli | ||
| ra_db | ||
| ra_fmt | ||
| ra_hir | ||
| ra_ide_api | ||
| ra_lsp_server | ||
| ra_mbe | ||
| ra_parser | ||
| ra_prof | ||
| ra_project_model | ||
| ra_syntax | ||
| ra_text_edit | ||
| ra_tt | ||
| test_utils | ||
| thread_worker | ||
| tools | ||