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2022-10-16 r/5143 feat(tvix/eval): add an AST pretty-printing moduleVincent Ambo1-1/+2
This implements serde::Serialize for the rnix AST through a wrapper type, and exposes a function for serialising the AST into a (pretty-printed JSON) string representation. This can be used to debug issues with the AST, and to display an AST reprsentation in tools like tvixbolt. Serialize is implemented manually because we don't own any of the structs and the way to traverse them is not easily derived automatically, and this is quite verbose. We might be able to condense it a little bit, but at the same time it's also fairly straightforward. Change-Id: I922df43cfc25636f3c8baee7944c75ade516055c Reviewed-on: https://cl.tvl.fyi/c/depot/+/6943 Autosubmit: tazjin <tazjin@tvl.su> Tested-by: BuildkiteCI Reviewed-by: Adam Joseph <adam@westernsemico.com> Reviewed-by: tazjin <tazjin@tvl.su>
2022-10-13 r/5117 feat(tvix/eval): allow to disable warningsAdam Joseph1-5/+25
The nix_tests test suite produces lots of warnings. We can't fix these, since they are kept in sync with upstream, so there's little point in cluttering up the console with them every time the tests are run. Let's add a clap flag "warnings" and TVIX_WARNINGS environment variable. The default is "true". The test runner overrides this default and mutes the warnings. Signed-off-by: Adam Joseph <adam@westernsemico.com> Change-Id: I4b065f96fe15838afcca6970491a54e248ae4df7 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6985 Reviewed-by: tazjin <tazjin@tvl.su> Reviewed-by: grfn <grfn@gws.fyi> Tested-by: BuildkiteCI
2022-10-12 r/5113 refactor(tvix/eval) s/NixPath/NixSearchPath/Adam Joseph1-4/+4
Since NixString is the Rust type for nix strings, people might mistake NixPath for the Rust type of nix paths, which it is not. Let's call it NixSearchPath instead. Signed-off-by: Adam Joseph <adam@westernsemico.com> Change-Id: Ib2ea155c4b27cb90d6180a04ea7b951d86607373 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6927 Reviewed-by: kanepyork <rikingcoding@gmail.com> Tested-by: BuildkiteCI Reviewed-by: tazjin <tazjin@tvl.su>
2022-10-10 r/5087 feat(tvix/eval): Initial resolution of `<...>` pathsGriffin Smith1-3/+16
This commit implements (lazy) resolution of `<...>` paths via either the NIX_PATH environment variable, or the -I command-line flag - both handled via EvalOptions. As a result, EvalOptions can no longer derive Copy, meaning we have to clone it at each line of the repl - this is probably not a huge deal as repl performance is not exactly an inner loop and we're not cloning very much. Internally, this works by creating a thunk which pushes a constant containing the string inside the brackets to the stack, then a new opcode to resolve that path via the `NixPath`. To get that opcode to work, we now have to pass in the NixPath when constructing the VM. This (intentionally) leaves out proper implementation of path resolution via `findFile` (cppnix just calls whatever identifier called findFile is in scope!!!) as that's widely considered a bit of a misfeature, but if we do decide to implement that down the road it likely wouldn't be more than a few extra ops within the thunk introduced here. Change-Id: Ibc979b7e425b65cbe88599940520239a4a10cee2 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6918 Autosubmit: grfn <grfn@gws.fyi> Reviewed-by: tazjin <tazjin@tvl.su> Tested-by: BuildkiteCI
2022-10-08 r/5063 feat(tvix/eval): fancy-format parse errors returned by rnixVincent Ambo1-5/+4
This change is quite verbose, so a little bit of explaining: 1. To correctly format parse errors, errors must be able to return more than one annotated span (the parser returns a list of errors for each span). To accomplish this, the structure of how the `Diagnostic` struct which formats an error is constructed has changed to delegate the creation of the `SpanLabel` vector to the kind of error. 2. The rnix structures don't have human-readable output formats by default, so some verbose methods for formatting them in human-readable ways have been added in the errors module. We might want to move these out into a submodule. 3. In many cases, the errors returned by rnix are a bit strange - so while we format them with all information that is easily available they may look weird or not necessarily help users. Consider this CL only a first step in the right direction. Change-Id: Ie7dd74751af9e7ecb35d751f8b087aae5ae6e2e8 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6871 Reviewed-by: sterni <sternenseemann@systemli.org> Autosubmit: tazjin <tazjin@tvl.su> Tested-by: BuildkiteCI
2022-10-07 r/5049 feat(tvix/eval): add method for emitting runtime warningsVincent Ambo1-1/+7
This lets the VM emit warnings when it encounters situations that should only be warned about at runtime. For starters, this is used to pass through compilation warnings that come up when `import` is used. Change-Id: I0c4bc8c534d699999887c430d93629fadfa662c4 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6868 Reviewed-by: sterni <sternenseemann@systemli.org> Tested-by: BuildkiteCI
2022-10-07 r/5048 feat(tvix/eval): insert `import` into the builtins itselfVincent Ambo1-6/+14
Adding `import` to builtins causes causes a bootstrap cycle because the `import` builtin needs to be initialised with the set of globals before being inserted into the globals, which also must contain itself. To break out of the cycle this hack wraps the builtins passed to the compiler in an `Rc` (probably sensible anyways, as they will end up getting cloned a bunch), containing a RefCell which gives us mutable access to the builtins. This opens up a potentially dangerous footgun in which we could mutate the builtins at runtime leading to different compiler invocations seeing different builtins, so it'd be nice to have some kind of "finalised" status for them or some such, but I'm not sure how to represent that atm. Change-Id: I25f8d4d2a7e8472d401c8ba2f4bbf9d86ab2abcb Reviewed-on: https://cl.tvl.fyi/c/depot/+/6867 Tested-by: BuildkiteCI Reviewed-by: grfn <grfn@gws.fyi>
2022-10-06 r/5041 feat(tvix/eval): initial implementation of `builtins.import`Vincent Ambo1-2/+11
This adds an initial working version of builtins.import which encapsulates the entire functionality of `import` within the builtin itself, without requiring any changes in the compiler or VM. The key insight that enables this is that we can simply return a Thunk from `import` that is constructed from the output of running the compiler and - ta-da! - no other component needs to know about it. A couple of notes: * builtins.import needs to capture variables like the SourceCode structure. This means it can not currently be constructed the same way as other builtins and has special handling, which leaks out to `eval.rs`. I have postponed dealing with that until we have this working a bit more. * the `globals` are not yet passed through * the error representation for the new variants is absolutely not done yet, we probably want to switch to something that supports cause-chaining now (like miette) * there is no mechanism for emitting warnings at runtime; we need to add that Change-Id: I3117a7ae3ff2432bf44f5ff05ad35f47faca31d5 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6857 Reviewed-by: sterni <sternenseemann@systemli.org> Reviewed-by: wpcarro <wpcarro@gmail.com> Tested-by: BuildkiteCI Reviewed-by: grfn <grfn@gws.fyi>
2022-10-05 r/5035 refactor(tvix/eval): introduce source::SourceCode typeVincent Ambo1-8/+8
This type hides away the lower-level handling of most codemap data structures, especially to library consumers (see corresponding changes in tvixbolt). This will help with implement `import` by giving us central control over how the codemap works. Change-Id: Ifcea36776879725871b30c518aeb96ab5fda035a Reviewed-on: https://cl.tvl.fyi/c/depot/+/6855 Tested-by: BuildkiteCI Reviewed-by: wpcarro <wpcarro@gmail.com>
2022-10-04 r/5034 refactor(tvix/eval): remove unnecessary clones in compilerVincent Ambo1-2/+2
There's basically nothing that needs *ownership* of an AST node (which is just a little box full of references to other things anyways), so we can thread this through as references all the way. Change-Id: I35a1348a50c0e8e07d51dfc18847829379166fbf Reviewed-on: https://cl.tvl.fyi/c/depot/+/6853 Tested-by: BuildkiteCI Reviewed-by: grfn <grfn@gws.fyi>
2022-10-04 r/5032 feat(tvix/eval): use fancy error formatting in REPLVincent Ambo1-7/+8
Change-Id: I8d5652d797b012bc3d5248ca2b2d0c87572dbf2e Reviewed-on: https://cl.tvl.fyi/c/depot/+/6851 Tested-by: BuildkiteCI Reviewed-by: wpcarro <wpcarro@gmail.com>
2022-09-18 r/4911 refactor(tvix/eval): use Clap for arg+env parsingGriffin Smith1-4/+21
Refactor the environment variable and argument parsing for the tvix repl to use Clap instead of doing things ad-hoc, and thread through options obtained from environment variables via explicit arguments rather than obtaining them from the environment as they're needed. This makes adding more flags more sustainable, and also makes the binary fully self-documenting, including supported env vars, via `--help`. Change-Id: Ib1f6a0cd20056e8c9196760ff755fa5729667760 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6653 Autosubmit: grfn <grfn@gws.fyi> Tested-by: BuildkiteCI Reviewed-by: tazjin <tazjin@tvl.su>
2022-09-18 r/4907 refactor(tvix/eval): clone the Arc<codemap::File> for the compilerVincent Ambo1-2/+2
This disconnects ownership of the `File` reference in a compiler from the calling scope, which is required for when we implement `import`. `import` will need to carry an `Rc<RefCell<CodeMap>>` (or maybe, in the future, Arc) to give us the ability to add new detected code files at runtime. Note that the choice of `Arc` over `Rc` here is not ours - it's the codemap crate's. Change-Id: I3aeca4ffc167acbd1701846a332d93550b56ba7d Reviewed-on: https://cl.tvl.fyi/c/depot/+/6630 Tested-by: BuildkiteCI Reviewed-by: grfn <grfn@gws.fyi>
2022-09-13 r/4830 feat(tvix/eval): implement initial fancy display for warningsVincent Ambo1-8/+3
This implements an initial fancy display for warnings emitted by the tvix compiler, using the codemap_diagnostic crate. Each warning variant has an associated message, and optionally an associated annotation for the span displayed to the user. In theory we could get a lot more fancy with the display for specific variants if needed (e.g. re-parse the AST and actually add multiple semantic spans based on context), but this is already a good start. Example: tvix-repl> let toString = https://tvl.fyi; in let inherit toString; in ({}: 42) rec {} warning[W004]: declared variable 'toString' shadows a built-in global! --> [tvix-repl]:1:5 | 1 | let toString = https://tvl.fyi; in let inherit toString; in ({}: 42) rec {} | ^^^^^^^^ variable declared here warning[W001]: URL literal syntax is deprecated, use a quoted string instead --> [tvix-repl]:1:16 | 1 | let toString = https://tvl.fyi; in let inherit toString; in ({}: 42) rec {} | ^^^^^^^^^^^^^^^ warning[W002]: inherited variable already exists with the same value --> [tvix-repl]:1:40 | 1 | let toString = https://tvl.fyi; in let inherit toString; in ({}: 42) rec {} | ^^^^^^^^^^^^^^^^^ warning[W999]: feature not yet implemented in tvix: recursive attribute sets --> [tvix-repl]:1:70 | 1 | let toString = https://tvl.fyi; in let inherit toString; in ({}: 42) rec {} | ^^^^^^ warning[W999]: feature not yet implemented in tvix: closed formals --> [tvix-repl]:1:62 | 1 | let toString = https://tvl.fyi; in let inherit toString; in ({}: 42) rec {} | ^^ warning[W003]: variable 'toString' is declared, but never used: --> [tvix-repl]:1:5 | 1 | let toString = https://tvl.fyi; in let inherit toString; in ({}: 42) rec {} | ^^^^^^^^ variable declared here => 42 :: int These are coloured when output to a terminal. Change-Id: If315648a07e333895db4ae1d0915ee2013806585 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6532 Autosubmit: tazjin <tazjin@tvl.su> Reviewed-by: grfn <grfn@gws.fyi> Tested-by: BuildkiteCI
2022-09-10 r/4785 feat(tvix/eval): conditionally use tracing/disassembling observersVincent Ambo1-7/+23
Gates the observes behind the envvars `TVIX_DUMP_BYTECODE` and `TVIX_TRACE_RUNTIME`. (hi grfn, yes, we should probably introduce CLI flags soon) Change-Id: I4fa194a84b04593d609b96b44471c3644fb30296 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6459 Tested-by: BuildkiteCI Reviewed-by: sterni <sternenseemann@systemli.org>
2022-09-09 r/4780 chore(tvix/eval): clean up remains of previous disassembler implVincent Ambo1-3/+3
Change-Id: Ib402ea23a58dc52ed0c5a97178cb5d0e53d69300 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6454 Reviewed-by: sterni <sternenseemann@systemli.org> Tested-by: BuildkiteCI
2022-09-09 r/4778 feat(tvix/eval): implement runtime tracing methods for ObserverVincent Ambo1-2/+3
These methods make it possible to trace the runtime execution of the VM through an observer. Change-Id: I90e26853ba2fe44748613e7f761ed5c1c5fc9ff7 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6452 Reviewed-by: sterni <sternenseemann@systemli.org> Tested-by: BuildkiteCI
2022-09-09 r/4775 feat(tvix/eval): implement DisassemblingObserver for compilerVincent Ambo1-12/+6
This type implements an observer that is called whenever the compiler emits a chunk (after the toplevel, thunks, or lambdas) and prints the output of the disassembler to its internal writer. This replaces half of the uses of the `disassembler` feature, which has been removed from the Cargo configuration. Note that at this commit runtime tracing is not yet implemented as an observer. Change-Id: I7894ca1ba445761aba4ad51d98e4a7b6445f1aea Reviewed-on: https://cl.tvl.fyi/c/depot/+/6449 Reviewed-by: sterni <sternenseemann@systemli.org> Tested-by: BuildkiteCI
2022-09-08 r/4768 feat(tvix/eval): print lambda memory adresses in disassemblerVincent Ambo1-4/+5
This makes it easier to track exactly which lambda is which when inspecting e.g. the concrete representation of a thunk. At runtime all lambdas live in an Rc. To make this print the right address, the construction of these Rcs had to be moved up right to the point where the lambda is first emitted (and disassembled). Change-Id: I6070e6c8ac55f0bd697966c4e7c5565c20d19106 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6435 Reviewed-by: sterni <sternenseemann@systemli.org> Tested-by: BuildkiteCI
2022-09-08 r/4763 fix(tvix/eval): address current clippy & grfn lintsVincent Ambo1-1/+1
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/4747 feat(tvix/eval): thread codemap through to disassemblerVincent Ambo1-1/+8
If the disassembler feature is enabled, make sure that an Rc of the codemap is available through the chunk. Change-Id: I700f27ab665a704f73457b19bd2d7efc93828a16 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6414 Reviewed-by: sterni <sternenseemann@systemli.org> Tested-by: BuildkiteCI
2022-09-08 r/4741 feat(tvix/eval): ensure all errors always carry a spanVincent Ambo1-4/+7
Previously error spans were optional because the information about code spans was not available at runtime. Now that this information has been added, the error type will always carry a span. This change is very invasive all throughout the codebase. This is due to the fact that many functions that are called *by* the VM expected to return `EvalResult`, but this no longer works as the span information is not available to those functions - only to the VM itself. To work around this the majority of these functions have been changed to return `Result<T, ErrorKind>` instead and an accompanying macro in the VM constructs the "real" error. Note that this implementatino currently has a bug where errors occuring within thunks will yield the location at which the thunk was forced, not the location at which the error occured within the code. This will be fixed soon, but the commit is large enough as is. Change-Id: Ib1ecb81a4d09d464a95ea7ea9e589f3bd08d5202 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6408 Reviewed-by: sterni <sternenseemann@systemli.org> Tested-by: BuildkiteCI
2022-09-07 r/4737 refactor(tvix/eval): store spans instead of nodes in Warning/ErrorVincent Ambo1-5/+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/4711 chore(tvix/eval): thread a codemap::File reference to the compilerVincent Ambo1-1/+10
This instantiates a codemap outside of the compiler and passes a reference to the file currently under compilation to it. Note that the "file" might just be a REPL line. Change-Id: I131ae1ddb6d718e1374750da9ba0b99608c6058d Reviewed-on: https://cl.tvl.fyi/c/depot/+/6378 Tested-by: BuildkiteCI Reviewed-by: sterni <sternenseemann@systemli.org>
2022-09-03 r/4624 chore(tvix/eval): print node representation for compiler errorsVincent Ambo1-1/+5
Better for development flow. Change-Id: I038efb39caca804f28a44fd4c83457e90abbcee4 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6290 Tested-by: BuildkiteCI Reviewed-by: grfn <grfn@gws.fyi>
2022-09-03 r/4608 fix(tvix/eval): address all current clippy lintsVincent Ambo1-2/+0
Change-Id: I758fc4f3b9078de7ca6228a75a4351c3e085c4cf Reviewed-on: https://cl.tvl.fyi/c/depot/+/6272 Reviewed-by: grfn <grfn@gws.fyi> Tested-by: BuildkiteCI
2022-09-02 r/4599 chore(tvix/eval): print slightly more information about warningsVincent Ambo1-1/+2
This is just for dev comfort, it's not going to be useful for the final version. Change-Id: I05fdd590097a61085ed641810655d9ddaf8f3511 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6265 Reviewed-by: sterni <sternenseemann@systemli.org> Tested-by: BuildkiteCI
2022-09-02 r/4588 feat(tvix/eval): introduce mechanism for defining builtinsVincent Ambo1-1/+2
Adds a new builtins module in which builtins can be constructed. The functions in this module should return a correctly structured value to be passed to the compiler's `globals`. This is wired up all the way to the compiler with an example `toString` builtin, available as a global. Note that this does not yet actually behave like the real toString, which has some differences from `Display`. Change-Id: Ibb5f6fbe6207782fdf2434435567fc1bd80039a5 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6254 Tested-by: BuildkiteCI Reviewed-by: sterni <sternenseemann@systemli.org>
2022-09-01 r/4576 refactor(tvix/eval): return a lambda from the compilerVincent Ambo1-2/+2
Changes the internal compiler plumbing to not just return a chunk of code, but the same chunk wrapped inside of a lambda value. This is one more step towards compiling runtime lambdas. Change-Id: If0035f8e65a2970c5ae123fc068a2396e1d8fd72 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6240 Tested-by: BuildkiteCI Reviewed-by: grfn <grfn@gws.fyi>
2022-09-01 r/4572 refactor(tvix/eval): collect vector of errors in compilerVincent Ambo1-0/+8
Instead of exiting the compiler at the first sight of an error, skip any erroneous nodes and continue compiling, collecting more errors along the way. This paves the way for nicer error reporting in which multiple errors can be reported at once, avoiding situations in which users are hunting a fault error-by-error and possibly getting distracted by less useful output. Change-Id: I80c9a87272e33a31297167ae2eb2706a46adf15a Reviewed-on: https://cl.tvl.fyi/c/depot/+/6236 Tested-by: BuildkiteCI Reviewed-by: grfn <grfn@gws.fyi>
2022-09-01 r/4571 feat(tvix/eval): carry optional SyntaxNode in error typeVincent Ambo1-2/+2
This starts paving the way for nicer, source-code based error reporting. Right now the code paths in the VM do not emit annotated errors, as we do not yet preserve that structure from the compiler. However, error emitting code paths in the compiler have been amended to include known nodes. Change-Id: I1b74410ffd891c40cd913361bd73c4336ec8aa5b Reviewed-on: https://cl.tvl.fyi/c/depot/+/6235 Tested-by: BuildkiteCI Reviewed-by: grfn <grfn@gws.fyi>
2022-09-01 r/4567 refactor(tvix/eval): Upgrade to latest rnix-parserVincent Ambo1-7/+13
Since the latest published version of rnix-parser on crates.io, the crate has undergone major changes which are only available in the git repository at the moment. This commit updates the compiler to this newer version of rnix. Most notably, the entire AST provided by rnix is now wrapped in the AST type system. As a result of this traversal is much nicer in many places, especially for things like nested attribute selection. There are a handful of smaller features missing for full feature parity with the previous version, especially handling of path literals, but PRs for these already exist in rnix-parser. Change-Id: Icde6d393067976549492b7d89c4cc49e5e575fc7 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6231 Reviewed-by: sterni <sternenseemann@systemli.org> Tested-by: BuildkiteCI
2022-08-31 r/4558 chore(tvix/eval): return parse errors out of eval::interpretVincent Ambo1-2/+8
Change-Id: I14f25b9c85260c68be38abf07ed80121ead60c7b Reviewed-on: https://cl.tvl.fyi/c/depot/+/6224 Tested-by: BuildkiteCI Reviewed-by: sterni <sternenseemann@systemli.org> Reviewed-by: grfn <grfn@gws.fyi>
2022-08-30 r/4537 fix(tvix/eval): address various clippy lintsVincent Ambo1-1/+1
Change-Id: I3ea0f51475e80948adfeb5d1620c1f2665cc39bc Reviewed-on: https://cl.tvl.fyi/c/depot/+/6201 Tested-by: BuildkiteCI Reviewed-by: sterni <sternenseemann@systemli.org>
2022-08-30 r/4534 feat(tvix/eval): implement chunk disassembler outputVincent Ambo1-1/+3
This makes for a much nicer view of an execution if `--feature disassembler` is set, for example: tvix-repl> let value = [ 1 2 { a = 1; } ]; in value ++ [ 1 ] === compiled bytecode (11 operations) === 02 OpConstant(1) 02 OpConstant(2) 02 OpConstant("a") 02 OpConstant(1) 02 OpAttrs(1) 02 OpList(3) 02 OpGetLocal(0) 02 OpConstant(1) 02 OpList(1) 02 OpConcat 02 OpCloseScope(1) === runtime trace === 0001 OpConstant(ConstantIdx(0)) [ 1 ] 0002 OpConstant(ConstantIdx(1)) [ 1 2 ] 0003 OpConstant(ConstantIdx(2)) [ 1 2 "a" ] 0004 OpConstant(ConstantIdx(3)) [ 1 2 "a" 1 ] 0005 OpAttrs(1) [ 1 2 { a = 1; } ] 0006 OpList(3) [ [ 1 2 { a = 1; } ] ] 0007 OpGetLocal(0) [ [ 1 2 { a = 1; } ] [ 1 2 { a = 1; } ] ] 0008 OpConstant(ConstantIdx(4)) [ [ 1 2 { a = 1; } ] [ 1 2 { a = 1; } ] 1 ] 0009 OpList(1) [ [ 1 2 { a = 1; } ] [ 1 2 { a = 1; } ] [ 1 ] ] 0010 OpConcat [ [ 1 2 { a = 1; } ] [ 1 2 { a = 1; } 1 ] ] 0011 OpCloseScope(1) [ [ 1 2 { a = 1; } 1 ] ] => [ 1 2 { a = 1; } 1 ] :: list Change-Id: If79c7fd1f0f18255ddb3763c1ba585fda8041b1b Reviewed-on: https://cl.tvl.fyi/c/depot/+/6195 Tested-by: BuildkiteCI Reviewed-by: sterni <sternenseemann@systemli.org>
2022-08-28 r/4519 feat(tvix/eval): resolve relative path literalsVincent Ambo1-2/+4
Resolves relative paths (e.g. `./foo`) either relative to the location of the Nix file, or relative to the working directory if none is supplied. Change-Id: I70ec574657b221b458015117a004b6e4a9c25a30 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6185 Tested-by: BuildkiteCI Reviewed-by: sterni <sternenseemann@systemli.org>
2022-08-26 r/4507 feat(tvix/eval): add mechanism for emitting warnings from compilerVincent Ambo1-3/+11
These can be used predominantly to emit warnings about things that the compiler can infer, such as deprecated language features. Change-Id: I3649c625459d7f3f95cdf42d5c651d23d66569ec Reviewed-on: https://cl.tvl.fyi/c/depot/+/6174 Reviewed-by: grfn <grfn@gws.fyi> Tested-by: BuildkiteCI
2022-08-24 r/4463 chore(tvix/eval): only print AST if requestedVincent Ambo1-1/+3
Change-Id: If32c7fd03458a27aecb8c473f2c48b12f8cb5175 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6128 Tested-by: BuildkiteCI Reviewed-by: grfn <grfn@gws.fyi> Autosubmit: tazjin <tazjin@tvl.su>
2022-08-24 r/4461 feat(tvix/tests): check in Nix' language test suiteVincent Ambo1-5/+4
This adds scaffolding code for running the Nix language test suite. The majority of eval-okay-* tests should eventually be runnable as-is by Tvix, however the eval-fail-* tests might not as we intend to have more useful error messages than upstream Nix. Change-Id: I4f3227f0889c55e4274b804a3072850fb78dd1bd Reviewed-on: https://cl.tvl.fyi/c/depot/+/6126 Tested-by: BuildkiteCI Autosubmit: tazjin <tazjin@tvl.su> Reviewed-by: grfn <grfn@gws.fyi>
2022-08-13 r/4432 style(tvix/eval): display `Display` representation of runtime valuesVincent Ambo1-1/+1
Change-Id: Ifbe05c2da9493c9e132a2d2e94a451d6091542a5 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6096 Tested-by: BuildkiteCI Reviewed-by: grfn <grfn@gws.fyi>
2022-08-13 r/4424 fix(tvix/eval): print code even if runtime failsVincent Ambo1-6/+2
Change-Id: I357c9adf939cb6001afa73ad02282d94ee22d0ba Reviewed-on: https://cl.tvl.fyi/c/depot/+/6088 Tested-by: BuildkiteCI Reviewed-by: grfn <grfn@gws.fyi>
2022-08-12 r/4417 refactor(tvix/eval): move NumberPair struct definition to vm moduleVincent Ambo1-1/+1
This isn't relevant to the value type itself. Change-Id: I678bc92a8a530b1081ed498bf3ff7925217bcc01 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6081 Tested-by: BuildkiteCI Autosubmit: tazjin <tazjin@tvl.su> Reviewed-by: grfn <grfn@gws.fyi>
2022-08-12 r/4410 feat(tvix/eval): implement simple arithmetic binary operationsVincent Ambo1-1/+1
Implements simple arithmetic operations (+, -, *, /). There is some scaffolding included to pop and coerce pairs of numbers, as the Nix language will let arithmetic operators apply to arbitrary pairs of number types (always resulting in floats if the types are mixed). Change-Id: I5f62c363bdea8baa6ef812cc64c5406759d257cf Reviewed-on: https://cl.tvl.fyi/c/depot/+/6074 Tested-by: BuildkiteCI Reviewed-by: grfn <grfn@gws.fyi>
2022-08-12 r/4408 chore(tvix/eval): wire things up for development flowVincent Ambo1-2/+21
This creates a REPL which outputs compiled bytecode, constants, and VM results for code snippets. Change-Id: If63f79a961456afd6a4cdf59b994107ff7ab8b47 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6072 Tested-by: BuildkiteCI Reviewed-by: grfn <grfn@gws.fyi> Autosubmit: tazjin <tazjin@tvl.su>
2022-08-12 r/4401 chore(tvix/eval): bootstrap some evaluator boilerplateVincent Ambo1-0/+5
Change-Id: I7770a20948d18a8506c2418dea21202aa21a6ddc Reviewed-on: https://cl.tvl.fyi/c/depot/+/6064 Tested-by: BuildkiteCI Reviewed-by: grfn <grfn@gws.fyi>