This test has to be run by a human, to check inputs etc. Fortunately, it
won't bitrot (syntactically, or type-check-ly; it might bitrot
semantically), as it is designed so that the test runner compiles it with
`--cfg robot_mode`, which is used to disable the actual running of code.
- Removes a layer of indirection in the storage of the completion
callback.
- Handles user tab completion in a task in which `complete` hasn't been
properly. Previously, if `complete` was called in one task, and `read`
called in another, attempting to get completions would crash. This
makes the completion handlers non-ambiguously task-local only.
- Fix a mismatch in return values between the Rust code and linenoise.
This way syntax extensions can generate unsafe blocks without worrying about them generating unnecessary unsafe warnings. Perhaps a special keyword could be added to be used in macros, but I don't think that's the best solution.
Currently if you use `format!` and friends in an `unsafe` block you're guaranteed to get some unused-unsafe warnings which is unfortunate. We normally do want these warnings, but I'm ok ignoring them in the case of compiler-generated unsafe blocks. I tried to do this in the least intrusive way possible, but others may have better ideas about how to do this.
This way syntax extensions can generate unsafe blocks without worrying about
them generating unnecessary unsafe warnings. Perhaps a special keyword could be
added to be used in macros, but I don't think that's the best solution.
The default buffer size is the same as the one in Java's BufferedWriter.
We may want BufferedWriter to have a Drop impl that flushes, but that
isn't possible right now due to #4252/#4430. This would be a bit
awkward due to the possibility of the inner flush failing. For what it's
worth, Java's BufferedReader doesn't have a flushing finalizer, but that
may just be because Java's finalizer support is awful.
The current implementation of BufferedStream is weird in my opinion, but
it's what the discussion in #8953 settled on.
I wrote a custom copy function since vec::copy_from doesn't optimize as
well as I would like.
Closes#8953
The default buffer size is the same as the one in Java's BufferedWriter.
We may want BufferedWriter to have a Drop impl that flushes, but that
isn't possible right now due to #4252/#4430. This would be a bit
awkward due to the possibility of the inner flush failing. For what it's
worth, Java's BufferedReader doesn't have a flushing finalizer, but that
may just be because Java's finalizer support is awful.
Closes#8953
update AST so that ExprBreak and ExprCont expressions contain names, not idents. Fixes#9047 and makes progress on #6993. Simplifies the compiler very slightly, should make it (infinitesimally) faster.
r? anyone
Remove some trivial Visitor structs, using their non-trivial Contexts as the Visitor implementation instead.
Removed a little bit of `@boxing` as well.
Part of ongoing work on #7081.
Ensures that each AST node has a unique id. Fixes numerous bugs in macro expansion and deriving. Add two
representative tests.
Fixes#7971Fixes#6304Fixes#8367Fixes#8754Fixes#8852Fixes#2543Fixes#7654
has a unique id. Fixes numerous bugs in macro expansion and deriving. Add two
representative tests.
Fixes#7971Fixes#6304Fixes#8367Fixes#8754Fixes#8852Fixes#2543Fixes#7654
Visit the free functions of std::vec and reimplement or remove some. Most prominently, remove `each_permutation` and replace with two iterators, ElementSwaps and Permutations.
Replace unzip, unzip_slice with an updated `unzip` that works with an iterator argument.
Replace each_permutation with a Permutation iterator. The new permutation iterator is more efficient since it uses an algorithm that produces permutations in an order where each is only one element swap apart, including swapping back to the original state with one swap at the end.
Unify the seldomly used functions `build`, `build_sized`, `build_sized_opt` into just one function `build`.
Remove `equal_sizes`
I've reversed my thinking on this restrictive definition of eq after
two separate bugs were hidden by commenting it out; it's better to
get ICEs than SIGSEGV's, any day.
RE-ENABLING ICE MACHINE!
These functions have very few users since they are mostly replaced by
iterator-based constructions.
Convert a few remaining users in-tree, and reduce the number of
functions by basically renaming build_sized_opt to build, and removing
the other two. This for both the vec and the at_vec versions.
The basic construct x.len() == y.len() is just as simple.
This function used to be a precondition (not sure about the
terminology), so it had to be a function. This is not relevant any more.
Update for a lot of changes (not many free functions left), add examples
of the important methods `slice` and `push`, and write a short bit about
iteration.
Introduce ElementSwaps and Permutations. ElementSwaps is an iterator
that for a given sequence length yields the element swaps needed
to visit each possible permutation of the sequence in turn.
We use an algorithm that generates a sequence such that each permutation
is only one swap apart.
let mut v = [1, 2, 3];
for perm in v.permutations_iter() {
// yields 1 2 3 | 1 3 2 | 3 1 2 | 3 2 1 | 2 3 1 | 2 1 3
}
The `.permutations_iter()` yields clones of the input vector for each
permutation.
If a copyless traversal is needed, it can be constructed with
`ElementSwaps`:
for (a, b) in ElementSwaps::new(3) {
// yields (2, 1), (1, 0), (2, 1) ...
v.swap(a, b);
// ..
}
The iterator over incoming connections has no natural end, so it should always return Some(_).
Currently, if an incoming connection fails, the iterator returns None.
Trying to accept another connection afterwards enters the realm of undefined behavior (due to the iterator protocol being silent on the issue).
This PR changes wraps the underlying accept call in Some, so the iterator never finishes.
Also redefine all of the standard logging macros to use more rust code instead
of custom LLVM translation code. This makes them a bit easier to understand, but
also more flexibile for future types of logging.
Additionally, this commit removes the LogType language item in preparation for
changing how logging is performed.
