depot - monorepo for the virus lounge

Age	Commit message (Collapse)	Author	Files	Lines
2022-09-11	r/4801 refactor(tvix/eval): capture entire with_stack in upvalues	Vincent Ambo	1	-13/+0
	This completely rewrites the handling of "dynamic upvalues" to, instead of resolving them at thunk/closure instantiation time (which forces some values too early), capture the entire with stack of parent contexts if it exists. There are a couple of things in here that could be written more efficiently, but I'm first working through this to get to a bug related to with + recursion and the code complexity of some of the optimisations is distracting. Change-Id: Ia538e06c9146e3bf8decb9adf02dd726d2c651cf Reviewed-on: https://cl.tvl.fyi/c/depot/+/6486 Tested-by: BuildkiteCI Reviewed-by: sterni <sternenseemann@systemli.org>
2022-09-11	r/4795 refactor(tvix/eval): add `initialised` arg to declare_phantom	Vincent Ambo	1	-3/+3
	There are more upcomming uses of declare_phantom where this will come in handy to avoid some code bloat. Change-Id: I75cad8caf14511c519ab2f56e87e99bcbf0a082e Reviewed-on: https://cl.tvl.fyi/c/depot/+/6467 Tested-by: BuildkiteCI Reviewed-by: sterni <sternenseemann@systemli.org>
2022-09-11	r/4794 refactor(tvix/eval): encapsulate scope cleanup logic in module	Vincent Ambo	1	-4/+45
	Moves the logic for removing tracked locals from a given scope from the compiler's locals list, and leaves only the actual compiler-related stuff (emitting warnings, cleaning up locals at runtime) in the compiler itself. Change-Id: I9da6eb54967f0a7775f624d602fe11be4c7ed5c4 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6466 Tested-by: BuildkiteCI Reviewed-by: sterni <sternenseemann@systemli.org>
2022-09-10	r/4786 fix(tvix/eval): fix doc comment syntax where applicable	Vincent Ambo	1	-17/+17
	As pointed out by grfn on cl/6091 Change-Id: I28308577b7cf99dffb4a4fd3cc8783eb9ab4d0d6 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6460 Tested-by: BuildkiteCI Reviewed-by: sterni <sternenseemann@systemli.org>
2022-09-09	r/4781 chore(tvix/eval): clean up a stale comment	Vincent Ambo	1	-4/+0
	Change-Id: If1b02fe1c78398387ea98490e5b099f1ff1b4164 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6455 Reviewed-by: sterni <sternenseemann@systemli.org> Tested-by: BuildkiteCI
2022-09-08	r/4763 fix(tvix/eval): address current clippy & grfn lints	Vincent Ambo	1	-4/+5
	Change-Id: I65c6feb9f817b5b367d37204a1f57acfe4100d97 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6430 Reviewed-by: sterni <sternenseemann@systemli.org> Tested-by: BuildkiteCI
2022-09-08	r/4757 fix(tvix/eval): ensure that root stack slot actually exists	Vincent Ambo	1	-4/+0
	Instead of using a sentinel LocalIdx which potentially points to a value in the locals stack that does not actually exist, set up an initial uninitialised phantom value representing the result of the root expression. Change-Id: I82ea774daab83168020a3850bed57d35ab25c7df Reviewed-on: https://cl.tvl.fyi/c/depot/+/6424 Reviewed-by: sterni <sternenseemann@systemli.org> Tested-by: BuildkiteCI
2022-09-08	r/4755 fix(tvix/eval): propagate scope depth when nesting scopes	Vincent Ambo	1	-0/+1
	Change-Id: Id441646db550f6195c2e247a0afbb5c9d91da8a0 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6422 Reviewed-by: sterni <sternenseemann@systemli.org> Tested-by: BuildkiteCI
2022-09-08	r/4754 refactor(tvix/eval): refactor locals to use an enum for phantoms	Vincent Ambo	1	-14/+36
	Instead of using sentinel values and an additional bool, this tracks the identifier of a local as an enum that is either a statically known name, or a phantom. To make this work correctly some more locals related logic has been encapsulated in the `scope` module, which is a good thing (that's the goal). Phantom values are now not initialised by default, but the only current call site of phantoms (`with` expression compilation) performs the initialisation right away. This commit changes no actual functionality right now, but paves the way for fixing an issue related to `let` bodies. Change-Id: I679f93a59a4daeacfe40f4012263cfb7bc05034e Reviewed-on: https://cl.tvl.fyi/c/depot/+/6421 Reviewed-by: sterni <sternenseemann@systemli.org> Tested-by: BuildkiteCI
2022-09-08	r/4753 refactor(tvix/eval): always pass slot to compiler methods	Vincent Ambo	1	-0/+4
	The slot is now always known (at the root of the file it is simply stack slot 0 once the scope drops back down to 0), so it does not need to be wrapped in an `Option` and accessed in cumbersome ways anymore. Change-Id: I46bf67a4cf5cb96e4874dffd0e3fb07c551d44f0 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6420 Reviewed-by: sterni <sternenseemann@systemli.org> Tested-by: BuildkiteCI
2022-09-08	r/4743 fix(tvix/eval): inherit scope poisoning data in nested contexts	Vincent Ambo	1	-0/+9
	Scope poisoning must be inherited across lambda context boundaries, e.g. if an outer scope has a poisoned `null`, any lambdas defined on the same level must reference that poisoned identifier correctly. Change-Id: I1aac64e1c048a6f3bacadb6d78ed295fa439e8b4 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6410 Reviewed-by: sterni <sternenseemann@systemli.org> Tested-by: BuildkiteCI
2022-09-07	r/4737 refactor(tvix/eval): store spans instead of nodes in Warning/Error	Vincent Ambo	1	-6/+6
	Another step towards being able to report accurate errors. The codemap spans contain strictly more accessible information, as they now retain information about which input file something came from. This required some shuffling around in the compiler to thread all the right information to the right places. Change-Id: I18ccfb20f07b0c33e1c4f51ca00cd09f7b2d19c6 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6404 Reviewed-by: sterni <sternenseemann@systemli.org> Tested-by: BuildkiteCI
2022-09-07	r/4733 feat(tvix/eval): track source spans for upvalues	Vincent Ambo	1	-0/+1
	With this change, the upvalue data instructions used by finalisers for thunks and closures track the source span of the first identifier that created the upvalue (if the same value is closed over multiple times the upvalue will be reused, hence only the first one). To do this the upvalue struct used by the compiler's scope now carries an identifier node, which had to be threaded through quite a few places. Change-Id: I15a5fcb4c8abbd48544a2325f297a5ad14ec06ae Reviewed-on: https://cl.tvl.fyi/c/depot/+/6400 Reviewed-by: sterni <sternenseemann@systemli.org> Tested-by: BuildkiteCI
2022-09-07	r/4732 refactor(tvix/eval): split out Upvalue struct & UpvalueKind enum	Vincent Ambo	1	-1/+6
	This separation makes it possible to annotate the upvalue itself with the span that created it, which (due to upvalue reuse) is only the first one for an instance of the given UpvalueKind. Change-Id: I9a991da6a3e8d71a92f981314bed900bcf434d44 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6399 Reviewed-by: sterni <sternenseemann@systemli.org> Tested-by: BuildkiteCI
2022-09-07	r/4706 fix(tvix/eval): address current clippy lints	Vincent Ambo	1	-2/+2
	Note that I've allowed `needless_lifetimes` for the attribute set iterator, as I find the type easier to understand with these annotations present. Change-Id: I33abb17837ee4813076cdb9a87f54bac4a37044e Reviewed-on: https://cl.tvl.fyi/c/depot/+/6373 Reviewed-by: sterni <sternenseemann@systemli.org> Tested-by: BuildkiteCI
2022-09-07	r/4695 chore(tvix/eval): implement Debug for compiler::scope::Scope	Vincent Ambo	1	-1/+2
	Change-Id: I112b0119bd0511f26bb72f7e73d867d1b7144a36 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6359 Tested-by: BuildkiteCI Reviewed-by: sterni <sternenseemann@systemli.org>
2022-09-06	r/4670 fix(tvix/eval): distinguish statically between StackIdx and LocalIdx	Vincent Ambo	1	-21/+79
	Previously the functions in the scope module returned usize values, which - sometimes from the same function - were either indexes into the runtime stack or indexes into the compiler's local stack. This is extremely confusing because it requires the caller to be aware of the difference, and it actually caused subtle bugs. To avoid this, there is now a new LocalIdx wrapper type which is used by the scope module to return indexes into the compiler's stack, as well as helpers for accounting for the differences between these indexes and the runtime indexes. Change-Id: I58f0b50ad94b28a304e3372fd9731b6590b3fdb8 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6340 Tested-by: BuildkiteCI Reviewed-by: sterni <sternenseemann@systemli.org>
2022-09-06	r/4668 feat(tvix/eval): track whether locals needs to be finalised	Vincent Ambo	1	-0/+4
	When encountering a deferred local upvalue, the compiler will now mark the corresponding local as needing a finaliser which makes it possible to emit the OpFinalise instruction for this stack slot a little bit down the line. Change-Id: I3962066f10fc6c6e1472722b8bdb415a811e0740 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6338 Tested-by: BuildkiteCI Reviewed-by: sterni <sternenseemann@systemli.org>
2022-09-06	r/4661 refactor(tvix/eval): decouple local depth & initialisation tracking	Vincent Ambo	1	-40/+22
	In order to resolve recursive references correctly, these two can not be initialised the same way as a potentially large number of (nested!) locals can be declared without initialising their depth. This would lead to issues with detecting things like shadowed variables, so making both bits explicit is preferable. Change-Id: I100cdf1724faa4a2b5a0748429841cf8ef206252 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6325 Tested-by: BuildkiteCI Reviewed-by: sterni <sternenseemann@systemli.org>
2022-09-06	r/4657 refactor(tvix/eval): thread dynamic upvalues through all contexts	Vincent Ambo	1	-2/+9
	With this change, encountering a dynamic upvalue will thread through all contexts starting from the lowest context that has a non-empty `with`-stack. The additional upvalues are not actually used yet, so the effective behaviour remains mostly the same. This is done in preparation for an upcoming change, which will implement proper dynamic resolution for complex cases of nested dynamic upvalues. Yes, this whole upvalue + dynamic values thing is a little bit mind-bending, but we would like to not give up being able to resolve a large chunk of the scoping behaviour statically. Change-Id: Ia58cdd47d79212390a6503ef13cef46b6b3e19a2 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6321 Tested-by: BuildkiteCI Reviewed-by: sterni <sternenseemann@systemli.org>
2022-09-04	r/4643 refactor(tvix/eval): track with stack size as a simple integer	Vincent Ambo	1	-7/+18
	The `With` struct no longer contained any internals after the cleanup logic for the stack had been moved into Compiler::compile_with, leaving the `Vec<With>` to essentially act as a counter for the number of things on the with stack. That's inefficient of course, so with this commit it actually becomes an integer (with an encapsulated API within scope::Scope). Change-Id: I67a00987fc8b46b30d369a96d41e83c8af5b1998 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6311 Tested-by: BuildkiteCI Reviewed-by: sterni <sternenseemann@systemli.org>
2022-09-04	r/4642 refactor(tvix/eval): move compiler's scope logic to separate module	Vincent Ambo	1	-0/+189
	The compiler module is getting quite long and this will help keep some order. Right now the scope internals are not very well encapsulated; this paves a way to reducing the API surface of the `scope` type to the things that are actually used by the compiler instead of giving access to its internals. Change-Id: I8c16c26d263f018baa263f395c9cd80715199241 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6310 Tested-by: BuildkiteCI Reviewed-by: sterni <sternenseemann@systemli.org>