| Commit message (Collapse) | Author | Age | Files | Lines |
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At the lowest level I'm reluctantly starting to see the need for errors
that stop the program in its tracks. Only way to avoid memory corruption
and security issues. But beyond that core I still want to be as lenient
as possible at higher levels of abstraction.
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Always show recipe name where error occurred. But don't show internal
'interactive' name for sandboxes, that's just confusing.
What started out as warnings are now ossifying into errors that halt all
execution. Is this how things went with C and Unix as well?
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Bugfix to 2186. I hadn't taken care of 'reload' as cleanly as I had
'run-interactive'.
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Exception: allow run-interactive to continue even if it encounters
errors in parsing its ingredient as mu code.
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Ingredients of 'main' are always strings (type address:array:character),
and are delineated from .mu files to load by a "--", e.g.:
$ ./mu x.mu y.mu -- a b c
Here 'main' must be defined in one of x.mu and y.mu, and will receive
the ingredients "a", "b", and "c".
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Make a test more robust, especially when running just until layer 38.
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Still iterating on the right way to handle incorrect number of
ingredients. My first idea of creating null results doesn't really work
once they're used in later instructions. Just add a warning at one place
in the run loop, but otherwise only add products when there's something
to save in them.
Undoes some work around commit 1886.
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For example:
x:number <- index y:address:array:number, 3
(forgetting to do a lookup)
Thanks Caleb Couch.
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First step to reducing typing burden. Next step: inferring types.
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Also standardized warnings.
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More verbose, but it saves trouble when debugging; there's never
something you thought should be traced but just never came out the other
end.
Also got rid of fatal errors entirely. Everything's a warning now, and
code after a warning isn't guaranteed to run.
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It comes up pretty early in the codebase, but hopefully won't come up
in the mu level until we get to higher-order recipes. Potentially
intimidating name, but such prime real estate with no confusing
overloadings in other projects!
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It should now be easy to do dynamic dispatch, create higher-order
functions, etc.
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chessboard finally passing all its tests. What made this hard was that
for some reason one of the background routines in the main chessboard
test wasn't terminating like it used to. And so it was polluting *later*
tests. Just clean up that source of contamination for now. Later we'll
think about routine termination.
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Just figured out why a first keystroke of backspace was sending me out
for a spin: run_interactive needs all early exits that don't actually
run anything to increment the current_step_index(). FML, this is lousy..
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Required fixing two levels of bugs:
a) The hack in tangle to drop initial comments a '%' directive..
b) ..was masking a bug where run_mu_scenario wasn't robust to initial
comments.
Mildly concerned that neither of the sub-issues have their own tests,
but I'm just removing hacks, and writing tests for that throwaway
function like run_mu_scenario seems pointless. Instead I've solved the
problem by disallowing comments before '%' directives.
I've also taken this opportunity to at least try to document the
'scenarios' and '%' directives at the first layer where they appear.
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This bit me in the last commit for the first time.
Layer 010vm.cc is starting to look weird. It has references to stuff
that gets implemented much later, like containers and exclusive
containers. Its helpers are getting an increasing amount of logic. And
it has no tests.
I'm still inclined to think it's useful to have major data structures in
one place, even if they aren't used for a bit. But those helpers should
perhaps move out somehow or get some tests in the same layer.
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Drop the #$%# 'encapsulated' stack ADT.
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..now that we support non-integers.
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This one layer had grown a dependency on a later layer. I could swear I
ran all the tests when I fixed the test harness in 1358..
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I added one test to check that divide can return a float, then hacked at
the rippling failures across the entire entire codebase until all tests
pass. Now I need to look at the changes I made and see if there's a
system to them, identify other places that I missed, and figure out the
best way to cover all cases. I also need to show real rather than
encoded values in the traces, but I can't use value() inside reagent
methods because of the name clash with the member variable. So let's
take a snapshot before we attempt any refactoring. This was non-trivial
to get right.
Even if I convince myself that I've gotten it right, I might back this
all out if I can't easily *persuade others* that I've gotten it right.
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Hacky new way to turn off child threads.
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I tried to bring too much into this commit, and paid the price with some
debugging effort. Still havent't tried to enable line buffering, but
I'll take a snapshot.
Some tests are failing because of the huge hack in the scheduler.
For a while I thought there was a bug in termbox because I kept seeing
segfaults and valgrind complained about out-of-bounds access. But that
was just subsidiary threads trying to print to the screen after I'd
returned to console mode.
Maybe I should add a test for send-keys-to-channel. Or just use a fake
keyboard rather than a channel.
And *then* there's the fact that the interaction is molasses slow.
Slower than the arc version even though the tests run so much faster.
And what's with the long pauses in printing strings to screen?
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Still need a nice syntax for managing the routine under test.
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Useful check:
$ grep "[^ '\"]\[[^\"]" *.cc \
|perl -pwe 's/\Wargv\[|\WTests\[|\Wframe\[|\WMemory\[|\WName\[|\WSurrounding_space\[|\WRecipe\[|\WType\[|\WRecipe_number\[|\WType_number\[|\WBefore_fragments\[|\WAfter_fragments\[//g' \
|perl -pwe 's/\Wargv\[|\WTests\[|\Wframe\[|\WMemory\[|\WName\[|\WSurrounding_space\[|\WRecipe\[|\WType\[|\WRecipe_number\[|\WType_number\[|\WBefore_fragments\[|\WAfter_fragments\[//g' \
|grep '[^ ]\['
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All primitives now always write to all their products. If a product is
not used that's fine, but if an instruction seems to expect too many
products mu will complain.
In the process, many primitives can operate on more than two ingredients
where it seems intuitive. You can add or divide more than two numbers
together, copy or negate multiple corresponding locations, etc.
There's one remaining bit of ugliness. Some instructions like
get/get-address, index/index-address, wait-for-location, these can
unnecessarily load values from memory when they don't need to.
Useful vim commands:
%s/ingredients\[\([^\]]*\)\]/ingredients.at(\1)/gc
%s/products\[\([^\]]*\)\]/products.at(\1)/gc
.,$s/\[\(.\)]/.at(\1)/gc
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I spent a couple of hours debugging this because routine-state only
sometimes writes to its product. This is unacceptable. Fix this first.
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I've tried to update the Readme, but there are at least a couple of issues.
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