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This closes #4364. I came into rust after modes had begun to be phased out, so I'm not exactly sure what they all did. My strategy was basically to turn on the compilation warnings and then when everything compiles and passes all the tests it's all good.
In most cases, I just dropped the mode, but in others I converted things to use `&` pointers when otherwise a move would happen.
This depends on #5963. When running the tests, everything passed except for a few compile-fail tests. These tests leaked memory, causing the task to abort differently. By suppressing the ICE from #5963, no leaks happen and the tests all pass. I would have looked into where the leaks were coming from, but I wasn't sure where or how to debug them (I found `RUSTRT_TRACK_ALLOCATIONS`, but it wasn't all that useful).
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This switches the unicode functions in core to use static character-range tables and a binary search helper rather than open-coded switch statements. It adds about 50k of read only data to the libcore binary but cuts out a similar amount of compiled IR. Would have done it this way in the first place but we didn't have structured statics for a long time.
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pub mod or pub fn).
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nikomatsakis/rust/issue-5656-change-meaning-of-borrowed-self, r=pcwalton
See #5656 for details.
r? @pcwalton
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Allow a deriving instance using the generic code to short-circuit for
any non-matching enum variants (grouping them all into a _ match),
reducing the number of arms required. Use this to speed up the Eq &
TotalEq implementations.
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deriving code.
Closes #4269, #5588 and #5589.
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interface.
Pulls out many of the common patterns from the Eq and Clone deriving code (and
invents a few of its own), so that deriving instances are very easy to write
for a certain class of traits. (Basically, those which don't have parameters
and where all methods only take arguments of type `&Self` and return either
`Self` or types with no parameters.)
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Good morning,
This first patch series adds support for `#[deriving(Decodable, Encodable)]`, but does not yet remove `#[auto_encode]` and `#[auto_decode]`. I need a snapshot to remove the old code. Along the way it also extends support for tuple structs and struct enum variants.
Also, it includes a minor fix to the pretty printer. We decided a while ago to use 4 spaces to indent a match arm instead of 2. This updates the pretty printer to reflect that.
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Fixes #5656.
Fixes #5541.
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@brson confirms that eval.rs is now dead code
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Cleanup substitutions and treatment of generics around traits in a number of ways
- In a TraitRef, use the self type consistently to refer to the Self type:
- trait ref in `impl Trait<A,B,C> for S` has a self type of `S`.
- trait ref in `A:Trait` has the self type `A`
- trait ref associated with a trait decl has self type `Self`
- trait ref associated with a supertype has self type `Self`
- trait ref in an object type `@Trait` has no self type
- Rewrite `each_bound_traits_and_supertraits` to perform
substitutions as it goes, and thus yield a series of trait refs
that are always in the same 'namespace' as the type parameter
bound given as input. Before, we left this to the caller, but
this doesn't work because the caller lacks adequare information
to perform the type substitutions correctly.
- For provided methods, substitute the generics involved in the provided
method correctly.
- Introduce TypeParameterDef, which tracks the bounds declared on a type
parameter and brings them together with the def_id and (in the future)
other information (maybe even the parameter's name!).
- Introduce Subst trait, which helps to cleanup a lot of the
repetitive code involved with doing type substitution.
- Introduce Repr trait, which makes debug printouts far more convenient.
Fixes #4183. Needed for #5656.
r? @catamorphism
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ways.
- In a TraitRef, use the self type consistently to refer to the Self type:
- trait ref in `impl Trait<A,B,C> for S` has a self type of `S`.
- trait ref in `A:Trait` has the self type `A`
- trait ref associated with a trait decl has self type `Self`
- trait ref associated with a supertype has self type `Self`
- trait ref in an object type `@Trait` has no self type
- Rewrite `each_bound_traits_and_supertraits` to perform
substitutions as it goes, and thus yield a series of trait refs
that are always in the same 'namespace' as the type parameter
bound given as input. Before, we left this to the caller, but
this doesn't work because the caller lacks adequare information
to perform the type substitutions correctly.
- For provided methods, substitute the generics involved in the provided
method correctly.
- Introduce TypeParameterDef, which tracks the bounds declared on a type
parameter and brings them together with the def_id and (in the future)
other information (maybe even the parameter's name!).
- Introduce Subst trait, which helps to cleanup a lot of the
repetitive code involved with doing type substitution.
- Introduce Repr trait, which makes debug printouts far more convenient.
Fixes #4183. Needed for #5656.
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This removes some of the easier instances of mutable fields where the explicit self can just become `&mut self` along with removing some unsafe blocks which aren't necessary any more now that purity is gone.
Most of #4568 is done, except for [one case](https://github.com/alexcrichton/rust/blob/less-mut-fields/src/libcore/vec.rs#L1754) where it looks like it has to do with it being a `const` vector. Removing the unsafe block yields:
```
/Users/alex/code/rust2/src/libcore/vec.rs:1755:12: 1755:16 error: illegal borrow unless pure: creating immutable alias to const vec content
/Users/alex/code/rust2/src/libcore/vec.rs:1755 for self.each |e| {
^~~~
/Users/alex/code/rust2/src/libcore/vec.rs:1757:8: 1757:9 note: impure due to access to impure function
/Users/alex/code/rust2/src/libcore/vec.rs:1757 }
^
error: aborting due to previous error
```
I also didn't delve too much into removing mutable fields with `Cell` or `transmute` and friends.
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Stops an ICE.
Closes #5544.
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bare function store (which is not in fact a kind of value) but rather
ty::TraitRef. Removes many uses of fail!() and other telltale signs of
type-semantic mismatch.
cc #4183 (not a fix, but related)
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per method and list of def-ids per trait.
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This naming is free now that `oldmap` has finally been removed, so this is a search-and-replace to take advantage of that. It might as well be called `HashMap` instead of being named after the specific implementation, since there's only one.
SipHash distributes keys so well that I don't think there will ever be much need to use anything but a simple hash table with open addressing. If there *is* a better way to do it, it will probably be better in all cases and can just be the default implementation.
A cuckoo-hashing implementation combining a weaker hash with SipHash could be useful, but that won't be as general purpose - you would need to write a separate fast hash function specialized for the type to really take advantage of it (like taking a page from libstdc++/libc++ and just using the integer value as the "hash"). I think a more specific naming for a truly alternative implementation like that would be fine, with the nice naming reserved for the general purpose container.
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Changes the parser to parse all streams into token-trees before hitting the parser proper, in preparation for hygiene. As an added bonus, it appears to speed up the parser (albeit by a totally imperceptible 1%).
Also, many comments in the parser.
Also, field renaming in token-trees (readme->forest, cur->stack).
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