Reduce str transmutes, add mut versions of methods.#41096
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bors merged 1 commit intorust-lang:masterfrom Apr 11, 2017
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Reduce str transmutes, add mut versions of methods.#41096bors merged 1 commit intorust-lang:masterfrom
bors merged 1 commit intorust-lang:masterfrom
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sfackler
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Apr 5, 2017
src/libcollections/str.rs
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For some reason I thought I annotated this as unsafe but I didn't.
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These seem like reasonable additions to me! (clear mirrors of the slice equivalents) |
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Looks like travis also has failures? |
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Travis failures are due to a requirement for docs of the new features; I will fix those in a bit. |
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Also I just added a |
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Looks like the build may still be failing? |
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Seems to be passing now! |
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@bors: r+ |
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📌 Commit a2b28be has been approved by |
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⌛ Testing commit a2b28be with merge dc93ce2... |
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💔 Test failed - status-appveyor |
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⌛ Testing commit a2b28be with merge 478d3b2... |
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💔 Test failed - status-appveyor |
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⌛ Testing commit a2b28be with merge 2137a14... |
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💔 Test failed - status-appveyor |
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Apr 11, 2017
Reduce str transmutes, add mut versions of methods. When I was working on the various parts involved in #40380 one of the comments I got was the excess of transmutes necessary to make the changes work. This is part of a set of multiple changes I'd like to offer to fix this problem. I think that having these methods is reasonable because they're already possible via transmutes, and it makes the code that uses them safer. I can also add `pub(crate)` to these methods for now if the libs team would rather not expose them to the public without an RFC.
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☀️ Test successful - status-appveyor, status-travis |
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More methods for str boxes. (reduce Box<[u8]> ↔ Box<str> transmutes) This is a follow-up to #41096 that adds safer methods for converting between `Box<str>` and `Box<[u8]>`. They're gated under a different feature from the `&mut str` methods because they may be too niche to include in public APIs, although having them internally helps reduce the number of transmutes the standard library uses. What's added: * `From<Box<str>> for Box<[u8]>` * `<Box<str>>::into_boxed_bytes` (just calls `Into::into`) * `alloc::str` (new module) * `from_boxed_utf8` and `from_boxed_utf8_unchecked`, defined in `alloc:str`, exported in `collections::str` * exports `from_utf8_mut` in `collections::str` (missed from previous PR)
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When I was working on the various parts involved in #40380 one of the comments I got was the excess of transmutes necessary to make the changes work. This is part of a set of multiple changes I'd like to offer to fix this problem.
I think that having these methods is reasonable because they're already possible via transmutes, and it makes the code that uses them safer. I can also add
pub(crate)to these methods for now if the libs team would rather not expose them to the public without an RFC.