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compare: imxyy1soope1:e33770c1bf0a3db934e8e04a244148ccb6ebcf6f
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imxyy1soope1:new imxyy1soope1:main

5 Commits
e29e432328 ... e33770c1bf

Author SHA1 Message Date
imxyy_soope_
e33770c1bf chore: tidy 2026-01-10 22:04:23 +08:00
imxyy_soope_
fbf35ba4cd feat: implement coerceToString 2026-01-10 22:03:05 +08:00
imxyy_soope_
1adb7a24a9 feat: implement SCC analysis; refactor test; rename js helper functions 2026-01-10 22:03:05 +08:00
imxyy_soope_
36ccc735f9 refactor: avoid Pin hack 2026-01-10 15:16:48 +08:00
imxyy_soope_
fdda1ae682 fix: throw error on duplicated let entry 2026-01-10 11:55:51 +08:00
44 changed files with 2908 additions and 1126 deletions
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7
.lazy.lua Normal file
View File

@@ -0,0 +1,7 @@
vim.lsp.config("biome", {
root_dir = function (bufnr, on_dir)
on_dir(vim.fn.getcwd())
end
})
return {}

317
Cargo.lock generated
View File

@@ -23,6 +23,18 @@ version = "0.2.21"
source = "registry+https://github.com/rust-lang/crates.io-index" source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "683d7910e743518b0e34f1186f92494becacb047c7b6bf616c96772180fef923" checksum = "683d7910e743518b0e34f1186f92494becacb047c7b6bf616c96772180fef923"
[[package]]
name = "anes"
version = "0.1.6"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "4b46cbb362ab8752921c97e041f5e366ee6297bd428a31275b9fcf1e380f7299"
[[package]]
name = "anstyle"
version = "1.0.13"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "5192cca8006f1fd4f7237516f40fa183bb07f8fbdfedaa0036de5ea9b0b45e78"
[[package]] [[package]]
name = "anyhow" name = "anyhow"
version = "1.0.98" version = "1.0.98"
@@ -165,6 +177,12 @@ dependencies = [
"syn", "syn",
] ]
[[package]]
name = "cast"
version = "0.3.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "37b2a672a2cb129a2e41c10b1224bb368f9f37a2b16b612598138befd7b37eb5"
[[package]] [[package]]
name = "cc" name = "cc"
version = "1.2.34" version = "1.2.34"
@@ -195,6 +213,33 @@ version = "0.1.1"
source = "registry+https://github.com/rust-lang/crates.io-index" source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "fd16c4719339c4530435d38e511904438d07cce7950afa3718a84ac36c10e89e" checksum = "fd16c4719339c4530435d38e511904438d07cce7950afa3718a84ac36c10e89e"
[[package]]
name = "ciborium"
version = "0.2.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "42e69ffd6f0917f5c029256a24d0161db17cea3997d185db0d35926308770f0e"
dependencies = [
"ciborium-io",
"ciborium-ll",
"serde",
]
[[package]]
name = "ciborium-io"
version = "0.2.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "05afea1e0a06c9be33d539b876f1ce3692f4afea2cb41f740e7743225ed1c757"
[[package]]
name = "ciborium-ll"
version = "0.2.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "57663b653d948a338bfb3eeba9bb2fd5fcfaecb9e199e87e1eda4d9e8b240fd9"
dependencies = [
"ciborium-io",
"half",
]
[[package]] [[package]]
name = "clang-sys" name = "clang-sys"
version = "1.8.1" version = "1.8.1"
@@ -206,6 +251,31 @@ dependencies = [
"libloading", "libloading",
] ]
[[package]]
name = "clap"
version = "4.5.54"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "c6e6ff9dcd79cff5cd969a17a545d79e84ab086e444102a591e288a8aa3ce394"
dependencies = [
"clap_builder",
]
[[package]]
name = "clap_builder"
version = "4.5.54"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "fa42cf4d2b7a41bc8f663a7cab4031ebafa1bf3875705bfaf8466dc60ab52c00"
dependencies = [
"anstyle",
"clap_lex",
]
[[package]]
name = "clap_lex"
version = "0.7.6"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "a1d728cc89cf3aee9ff92b05e62b19ee65a02b5702cff7d5a377e32c6ae29d8d"
[[package]] [[package]]
name = "clipboard-win" name = "clipboard-win"
version = "5.4.1" version = "5.4.1"
@@ -263,6 +333,73 @@ dependencies = [
"cfg-if", "cfg-if",
] ]
[[package]]
name = "criterion"
version = "0.5.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "f2b12d017a929603d80db1831cd3a24082f8137ce19c69e6447f54f5fc8d692f"
dependencies = [
"anes",
"cast",
"ciborium",
"clap",
"criterion-plot",
"is-terminal",
"itertools 0.10.5",
"num-traits",
"once_cell",
"oorandom",
"plotters",
"rayon",
"regex",
"serde",
"serde_derive",
"serde_json",
"tinytemplate",
"walkdir",
]
[[package]]
name = "criterion-plot"
version = "0.5.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "6b50826342786a51a89e2da3a28f1c32b06e387201bc2d19791f622c673706b1"
dependencies = [
"cast",
"itertools 0.10.5",
]
[[package]]
name = "crossbeam-deque"
version = "0.8.6"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "9dd111b7b7f7d55b72c0a6ae361660ee5853c9af73f70c3c2ef6858b950e2e51"
dependencies = [
"crossbeam-epoch",
"crossbeam-utils",
]
[[package]]
name = "crossbeam-epoch"
version = "0.9.18"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "5b82ac4a3c2ca9c3460964f020e1402edd5753411d7737aa39c3714ad1b5420e"
dependencies = [
"crossbeam-utils",
]
[[package]]
name = "crossbeam-utils"
version = "0.8.21"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "d0a5c400df2834b80a4c3327b3aad3a4c4cd4de0629063962b03235697506a28"
[[package]]
name = "crunchy"
version = "0.2.4"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "460fbee9c2c2f33933d720630a6a0bac33ba7053db5344fac858d4b8952d77d5"
[[package]] [[package]]
name = "data-encoding" name = "data-encoding"
version = "2.9.0" version = "2.9.0"
@@ -507,6 +644,12 @@ dependencies = [
"windows-sys 0.59.0", "windows-sys 0.59.0",
] ]
[[package]]
name = "fixedbitset"
version = "0.5.7"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "1d674e81391d1e1ab681a28d99df07927c6d4aa5b027d7da16ba32d1d21ecd99"
[[package]] [[package]]
name = "foldhash" name = "foldhash"
version = "0.1.5" version = "0.1.5"
@@ -660,6 +803,17 @@ dependencies = [
"crc32fast", "crc32fast",
] ]
[[package]]
name = "half"
version = "2.7.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "6ea2d84b969582b4b1864a92dc5d27cd2b77b622a8d79306834f1be5ba20d84b"
dependencies = [
"cfg-if",
"crunchy",
"zerocopy",
]
[[package]] [[package]]
name = "hashbrown" name = "hashbrown"
version = "0.14.5" version = "0.14.5"
@@ -692,6 +846,12 @@ version = "0.5.0"
source = "registry+https://github.com/rust-lang/crates.io-index" source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "2304e00983f87ffb38b55b444b5e3b60a884b5d30c0fca7d82fe33449bbe55ea" checksum = "2304e00983f87ffb38b55b444b5e3b60a884b5d30c0fca7d82fe33449bbe55ea"
[[package]]
name = "hermit-abi"
version = "0.5.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "fc0fef456e4baa96da950455cd02c081ca953b141298e41db3fc7e36b1da849c"
[[package]] [[package]]
name = "home" name = "home"
version = "0.5.11" version = "0.5.11"
@@ -865,6 +1025,26 @@ dependencies = [
"hashbrown 0.16.1", "hashbrown 0.16.1",
] ]
[[package]]
name = "is-terminal"
version = "0.4.17"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "3640c1c38b8e4e43584d8df18be5fc6b0aa314ce6ebf51b53313d4306cca8e46"
dependencies = [
"hermit-abi",
"libc",
"windows-sys 0.61.2",
]
[[package]]
name = "itertools"
version = "0.10.5"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "b0fd2260e829bddf4cb6ea802289de2f86d6a7a690192fbe91b3f46e0f2c8473"
dependencies = [
"either",
]
[[package]] [[package]]
name = "itertools" name = "itertools"
version = "0.13.0" version = "0.13.0"
@@ -1046,6 +1226,7 @@ name = "nix-js"
version = "0.1.0" version = "0.1.0"
dependencies = [ dependencies = [
"anyhow", "anyhow",
"criterion",
"deno_core", "deno_core",
"deno_error", "deno_error",
"derive_more", "derive_more",
@@ -1053,7 +1234,7 @@ dependencies = [
"itertools 0.14.0", "itertools 0.14.0",
"mimalloc", "mimalloc",
"nix-js-macros", "nix-js-macros",
"pin-project", "petgraph",
"regex", "regex",
"rnix", "rnix",
"rustyline", "rustyline",
@@ -1117,6 +1298,12 @@ version = "1.21.3"
source = "registry+https://github.com/rust-lang/crates.io-index" source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "42f5e15c9953c5e4ccceeb2e7382a716482c34515315f7b03532b8b4e8393d2d" checksum = "42f5e15c9953c5e4ccceeb2e7382a716482c34515315f7b03532b8b4e8393d2d"
[[package]]
name = "oorandom"
version = "11.1.5"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "d6790f58c7ff633d8771f42965289203411a5e5c68388703c06e14f24770b41e"
[[package]] [[package]]
name = "outref" name = "outref"
version = "0.5.2" version = "0.5.2"
@@ -1158,6 +1345,18 @@ version = "2.3.2"
source = "registry+https://github.com/rust-lang/crates.io-index" source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "9b4f627cb1b25917193a259e49bdad08f671f8d9708acfd5fe0a8c1455d87220" checksum = "9b4f627cb1b25917193a259e49bdad08f671f8d9708acfd5fe0a8c1455d87220"
[[package]]
name = "petgraph"
version = "0.8.3"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "8701b58ea97060d5e5b155d383a69952a60943f0e6dfe30b04c287beb0b27455"
dependencies = [
"fixedbitset",
"hashbrown 0.15.5",
"indexmap",
"serde",
]
[[package]] [[package]]
name = "pin-project" name = "pin-project"
version = "1.1.10" version = "1.1.10"
@@ -1190,6 +1389,34 @@ version = "0.1.0"
source = "registry+https://github.com/rust-lang/crates.io-index" source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "8b870d8c151b6f2fb93e84a13146138f05d02ed11c7e7c54f8826aaaf7c9f184" checksum = "8b870d8c151b6f2fb93e84a13146138f05d02ed11c7e7c54f8826aaaf7c9f184"
[[package]]
name = "plotters"
version = "0.3.7"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "5aeb6f403d7a4911efb1e33402027fc44f29b5bf6def3effcc22d7bb75f2b747"
dependencies = [
"num-traits",
"plotters-backend",
"plotters-svg",
"wasm-bindgen",
"web-sys",
]
[[package]]
name = "plotters-backend"
version = "0.3.7"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "df42e13c12958a16b3f7f4386b9ab1f3e7933914ecea48da7139435263a4172a"
[[package]]
name = "plotters-svg"
version = "0.3.7"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "51bae2ac328883f7acdfea3d66a7c35751187f870bc81f94563733a154d7a670"
dependencies = [
"plotters-backend",
]
[[package]] [[package]]
name = "potential_utf" name = "potential_utf"
version = "0.1.4" version = "0.1.4"
@@ -1266,6 +1493,26 @@ version = "0.6.4"
source = "registry+https://github.com/rust-lang/crates.io-index" source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "ec0be4795e2f6a28069bec0b5ff3e2ac9bafc99e6a9a7dc3547996c5c816922c" checksum = "ec0be4795e2f6a28069bec0b5ff3e2ac9bafc99e6a9a7dc3547996c5c816922c"
[[package]]
name = "rayon"
version = "1.11.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "368f01d005bf8fd9b1206fb6fa653e6c4a81ceb1466406b81792d87c5677a58f"
dependencies = [
"either",
"rayon-core",
]
[[package]]
name = "rayon-core"
version = "1.13.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "22e18b0f0062d30d4230b2e85ff77fdfe4326feb054b9783a3460d8435c8ab91"
dependencies = [
"crossbeam-deque",
"crossbeam-utils",
]
[[package]] [[package]]
name = "redox_syscall" name = "redox_syscall"
version = "0.5.18" version = "0.5.18"
@@ -1411,6 +1658,15 @@ dependencies = [
"windows-sys 0.52.0", "windows-sys 0.52.0",
] ]
[[package]]
name = "same-file"
version = "1.0.6"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "93fc1dc3aaa9bfed95e02e6eadabb4baf7e3078b0bd1b4d7b6b0b68378900502"
dependencies = [
"winapi-util",
]
[[package]] [[package]]
name = "scopeguard" name = "scopeguard"
version = "1.2.0" version = "1.2.0"
@@ -1749,6 +2005,16 @@ dependencies = [
"zerovec", "zerovec",
] ]
[[package]]
name = "tinytemplate"
version = "1.2.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "be4d6b5f19ff7664e8c98d03e2139cb510db9b0a60b55f8e8709b689d939b6bc"
dependencies = [
"serde",
"serde_json",
]
[[package]] [[package]]
name = "tokio" name = "tokio"
version = "1.48.0" version = "1.48.0"
@@ -1864,6 +2130,16 @@ version = "0.8.0"
source = "registry+https://github.com/rust-lang/crates.io-index" source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "5c3082ca00d5a5ef149bb8b555a72ae84c9c59f7250f013ac822ac2e49b19c64" checksum = "5c3082ca00d5a5ef149bb8b555a72ae84c9c59f7250f013ac822ac2e49b19c64"
[[package]]
name = "walkdir"
version = "2.5.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "29790946404f91d9c5d06f9874efddea1dc06c5efe94541a7d6863108e3a5e4b"
dependencies = [
"same-file",
"winapi-util",
]
[[package]] [[package]]
name = "wasi" name = "wasi"
version = "0.11.1+wasi-snapshot-preview1" version = "0.11.1+wasi-snapshot-preview1"
@@ -1934,6 +2210,16 @@ dependencies = [
"thiserror", "thiserror",
] ]
[[package]]
name = "web-sys"
version = "0.3.83"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "9b32828d774c412041098d182a8b38b16ea816958e07cf40eec2bc080ae137ac"
dependencies = [
"js-sys",
"wasm-bindgen",
]
[[package]] [[package]]
name = "which" name = "which"
version = "6.0.3" version = "6.0.3"
@@ -1962,6 +2248,15 @@ version = "0.4.0"
source = "registry+https://github.com/rust-lang/crates.io-index" source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6" checksum = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
[[package]]
name = "winapi-util"
version = "0.1.11"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "c2a7b1c03c876122aa43f3020e6c3c3ee5c05081c9a00739faf7503aeba10d22"
dependencies = [
"windows-sys 0.61.2",
]
[[package]] [[package]]
name = "winapi-x86_64-pc-windows-gnu" name = "winapi-x86_64-pc-windows-gnu"
version = "0.4.0" version = "0.4.0"
@@ -2189,6 +2484,26 @@ dependencies = [
"synstructure", "synstructure",
] ]
[[package]]
name = "zerocopy"
version = "0.8.33"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "668f5168d10b9ee831de31933dc111a459c97ec93225beb307aed970d1372dfd"
dependencies = [
"zerocopy-derive",
]
[[package]]
name = "zerocopy-derive"
version = "0.8.33"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "2c7962b26b0a8685668b671ee4b54d007a67d4eaf05fda79ac0ecf41e32270f1"
dependencies = [
"proc-macro2",
"quote",
"syn",
]
[[package]] [[package]]
name = "zerofrom" name = "zerofrom"
version = "0.1.6" version = "0.1.6"

9
biome.json
View File

@@ -1,5 +1,5 @@
{ {
"$schema": "https://biomejs.dev/schemas/2.3.6/schema.json", "$schema": "https://biomejs.dev/schemas/2.3.9/schema.json",
"vcs": { "vcs": {
"enabled": true, "enabled": true,
"clientKind": "git", "clientKind": "git",
@@ -17,6 +17,13 @@
"lineWidth": 110, "lineWidth": 110,
"lineEnding": "lf" "lineEnding": "lf"
}, },
"linter": {
"rules": {
"style": {
"useNamingConvention": "warn"
}
}
},
"javascript": { "javascript": {
"formatter": { "formatter": {
"arrowParentheses": "always", "arrowParentheses": "always",

5
flake.nix
View File

@@ -22,13 +22,16 @@
"rustfmt" "rustfmt"
"rust-analyzer" "rust-analyzer"
]) ])
cargo-outdated
lldb lldb
valgrind valgrind
claude-code hyperfine
nodejs nodejs
nodePackages.npm nodePackages.npm
biome biome
claude-code
]; ];
}; };
} }

26
nix-js/Cargo.toml
View File

@@ -11,13 +11,16 @@ mimalloc = "0.1"
anyhow = "1.0" anyhow = "1.0"
rustyline = "14.0" rustyline = "14.0"
regex = "1.11"
hashbrown = "0.16"
derive_more = { version = "2", features = ["full"] } derive_more = { version = "2", features = ["full"] }
thiserror = "2" thiserror = "2"
hashbrown = "0.16"
petgraph = "0.8"
string-interner = "0.19" string-interner = "0.19"
itertools = "0.14" itertools = "0.14"
pin-project = "1"
regex = "1.11"
deno_core = "0.376" deno_core = "0.376"
deno_error = "0.7" deno_error = "0.7"
@@ -28,3 +31,20 @@ nix-js-macros = { path = "../nix-js-macros" }
[dev-dependencies] [dev-dependencies]
tempfile = "3.24" tempfile = "3.24"
criterion = { version = "0.5", features = ["html_reports"] }
[[bench]]
name = "basic_ops"
harness = false
[[bench]]
name = "builtins"
harness = false
[[bench]]
name = "scc_optimization"
harness = false
[[bench]]
name = "compile_time"
harness = false

111
nix-js/benches/basic_ops.rs Normal file
View File

@@ -0,0 +1,111 @@
mod utils;
use criterion::{Criterion, black_box, criterion_group, criterion_main};
use utils::eval;
fn bench_arithmetic(c: &mut Criterion) {
let mut group = c.benchmark_group("arithmetic");
group.bench_function("addition", |b| b.iter(|| eval(black_box("1 + 1"))));
group.bench_function("subtraction", |b| b.iter(|| eval(black_box("10 - 5"))));
group.bench_function("multiplication", |b| b.iter(|| eval(black_box("6 * 7"))));
group.bench_function("division", |b| b.iter(|| eval(black_box("100 / 5"))));
group.bench_function("complex_expression", |b| {
b.iter(|| eval(black_box("(5 + 3) * (10 - 2) / 4")))
});
group.finish();
}
fn bench_comparison(c: &mut Criterion) {
let mut group = c.benchmark_group("comparison");
group.bench_function("equality", |b| b.iter(|| eval(black_box("42 == 42"))));
group.bench_function("less_than", |b| b.iter(|| eval(black_box("5 < 10"))));
group.bench_function("logical_and", |b| {
b.iter(|| eval(black_box("true && false")))
});
group.bench_function("logical_or", |b| {
b.iter(|| eval(black_box("true || false")))
});
group.finish();
}
fn bench_function_application(c: &mut Criterion) {
let mut group = c.benchmark_group("function_application");
group.bench_function("simple_identity", |b| {
b.iter(|| eval(black_box("(x: x) 42")))
});
group.bench_function("curried_function", |b| {
b.iter(|| eval(black_box("(x: y: x + y) 10 20")))
});
group.bench_function("nested_application", |b| {
b.iter(|| eval(black_box("((x: y: z: x + y + z) 1) 2 3")))
});
group.finish();
}
fn bench_let_bindings(c: &mut Criterion) {
let mut group = c.benchmark_group("let_bindings");
group.bench_function("simple_let", |b| {
b.iter(|| eval(black_box("let x = 5; in x + 10")))
});
group.bench_function("multiple_bindings", |b| {
b.iter(|| eval(black_box("let a = 1; b = 2; c = 3; in a + b + c")))
});
group.bench_function("dependent_bindings", |b| {
b.iter(|| eval(black_box("let x = 5; y = x * 2; z = y + 3; in z")))
});
group.finish();
}
fn bench_attrsets(c: &mut Criterion) {
let mut group = c.benchmark_group("attrsets");
group.bench_function("simple_attrset", |b| {
b.iter(|| eval(black_box("{ a = 1; b = 2; }.a")))
});
group.bench_function("nested_attrset", |b| {
b.iter(|| eval(black_box("{ a.b.c = 42; }.a.b.c")))
});
group.bench_function("rec_attrset", |b| {
b.iter(|| eval(black_box("rec { a = 1; b = a + 1; }.b")))
});
group.bench_function("attrset_update", |b| {
b.iter(|| eval(black_box("{ a = 1; } // { b = 2; }")))
});
group.finish();
}
fn bench_lists(c: &mut Criterion) {
let mut group = c.benchmark_group("lists");
group.bench_function("simple_list", |b| {
b.iter(|| eval(black_box("[ 1 2 3 4 5 ]")))
});
group.bench_function("list_concatenation", |b| {
b.iter(|| eval(black_box("[ 1 2 3 ] ++ [ 4 5 6 ]")))
});
group.bench_function("nested_list", |b| {
b.iter(|| eval(black_box("[ [ 1 2 ] [ 3 4 ] [ 5 6 ] ]")))
});
group.finish();
}
criterion_group!(
benches,
bench_arithmetic,
bench_comparison,
bench_function_application,
bench_let_bindings,
bench_attrsets,
bench_lists
);
criterion_main!(benches);

143
nix-js/benches/builtins.rs Normal file
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@@ -0,0 +1,143 @@
mod utils;
use criterion::{Criterion, black_box, criterion_group, criterion_main};
use utils::eval;
fn bench_builtin_math(c: &mut Criterion) {
let mut group = c.benchmark_group("builtin_math");
group.bench_function("add", |b| b.iter(|| eval(black_box("builtins.add 10 20"))));
group.bench_function("sub", |b| b.iter(|| eval(black_box("builtins.sub 20 10"))));
group.bench_function("mul", |b| b.iter(|| eval(black_box("builtins.mul 6 7"))));
group.bench_function("div", |b| b.iter(|| eval(black_box("builtins.div 100 5"))));
group.finish();
}
fn bench_builtin_list(c: &mut Criterion) {
let mut group = c.benchmark_group("builtin_list");
group.bench_function("length_small", |b| {
b.iter(|| eval(black_box("builtins.length [1 2 3 4 5]")))
});
group.bench_function("length_large", |b| {
b.iter(|| {
eval(black_box(
"builtins.length [1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20]",
))
})
});
group.bench_function("head", |b| {
b.iter(|| eval(black_box("builtins.head [1 2 3 4 5]")))
});
group.bench_function("tail", |b| {
b.iter(|| eval(black_box("builtins.tail [1 2 3 4 5]")))
});
group.bench_function("elem_found", |b| {
b.iter(|| eval(black_box("builtins.elem 3 [1 2 3 4 5]")))
});
group.bench_function("elem_not_found", |b| {
b.iter(|| eval(black_box("builtins.elem 10 [1 2 3 4 5]")))
});
group.bench_function("concat_lists", |b| {
b.iter(|| eval(black_box("builtins.concatLists [[1 2] [3 4] [5 6]]")))
});
group.finish();
}
fn bench_builtin_map_filter(c: &mut Criterion) {
let mut group = c.benchmark_group("builtin_map_filter");
group.bench_function("map_small", |b| {
b.iter(|| eval(black_box("builtins.map (x: x * 2) [1 2 3 4 5]")))
});
group.bench_function("map_large", |b| {
b.iter(|| {
eval(black_box(
"builtins.map (x: x * 2) [1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20]",
))
})
});
group.bench_function("filter_small", |b| {
b.iter(|| eval(black_box("builtins.filter (x: x > 2) [1 2 3 4 5]")))
});
group.bench_function("filter_large", |b| {
b.iter(|| {
eval(black_box(
"builtins.filter (x: x > 10) [1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20]",
))
})
});
group.bench_function("foldl", |b| {
b.iter(|| {
eval(black_box(
"builtins.foldl' (acc: x: acc + x) 0 [1 2 3 4 5 6 7 8 9 10]",
))
})
});
group.finish();
}
fn bench_builtin_attrset(c: &mut Criterion) {
let mut group = c.benchmark_group("builtin_attrset");
group.bench_function("attrNames", |b| {
b.iter(|| eval(black_box("builtins.attrNames { a = 1; b = 2; c = 3; }")))
});
group.bench_function("attrValues", |b| {
b.iter(|| eval(black_box("builtins.attrValues { a = 1; b = 2; c = 3; }")))
});
group.bench_function("hasAttr", |b| {
b.iter(|| eval(black_box("builtins.hasAttr \"a\" { a = 1; b = 2; c = 3; }")))
});
group.bench_function("getAttr", |b| {
b.iter(|| eval(black_box("builtins.getAttr \"b\" { a = 1; b = 2; c = 3; }")))
});
group.finish();
}
fn bench_builtin_type_checks(c: &mut Criterion) {
let mut group = c.benchmark_group("builtin_type_checks");
group.bench_function("isInt", |b| b.iter(|| eval(black_box("builtins.isInt 42"))));
group.bench_function("isList", |b| {
b.iter(|| eval(black_box("builtins.isList [1 2 3]")))
});
group.bench_function("isAttrs", |b| {
b.iter(|| eval(black_box("builtins.isAttrs { a = 1; }")))
});
group.bench_function("isFunction", |b| {
b.iter(|| eval(black_box("builtins.isFunction (x: x)")))
});
group.bench_function("typeOf", |b| {
b.iter(|| eval(black_box("builtins.typeOf 42")))
});
group.finish();
}
fn bench_free_globals(c: &mut Criterion) {
let mut group = c.benchmark_group("free_globals");
group.bench_function("map", |b| {
b.iter(|| eval(black_box("map (x: x * 2) [1 2 3 4 5]")))
});
group.bench_function("isNull", |b| b.iter(|| eval(black_box("isNull null"))));
group.bench_function("toString", |b| b.iter(|| eval(black_box("toString 42"))));
group.finish();
}
criterion_group!(
benches,
bench_builtin_math,
bench_builtin_list,
bench_builtin_map_filter,
bench_builtin_attrset,
bench_builtin_type_checks,
bench_free_globals
);
criterion_main!(benches);

139
nix-js/benches/compile_time.rs Normal file
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@@ -0,0 +1,139 @@
mod utils;
use criterion::{Criterion, black_box, criterion_group, criterion_main};
use nix_js::context::Context;
use utils::compile;
fn bench_parse_and_downgrade(c: &mut Criterion) {
let mut group = c.benchmark_group("parse_and_downgrade");
group.bench_function("simple_expression", |b| {
b.iter(|| {
compile(black_box("1 + 1"));
})
});
group.bench_function("complex_function", |b| {
b.iter(|| {
compile(black_box(
"let fib = n: if n <= 1 then 1 else fib (n - 1) + fib (n - 2); in fib",
));
})
});
group.bench_function("large_attrset", |b| {
b.iter(|| {
compile(black_box(
"{ a = 1; b = 2; c = 3; d = 4; e = 5; f = 6; g = 7; h = 8; i = 9; j = 10; k = 11; l = 12; m = 13; n = 14; o = 15; }",
));
})
});
group.bench_function("nested_let_bindings", |b| {
b.iter(|| {
compile(black_box(
"let a = 1; b = 2; c = 3; in let d = a + b; e = b + c; in let f = d + e; in f",
));
})
});
group.finish();
}
fn bench_codegen(c: &mut Criterion) {
let mut group = c.benchmark_group("codegen");
group.bench_function("arithmetic_expression", |b| {
b.iter(|| compile(black_box("(1 + 2) * (3 - 4) / 5")))
});
group.bench_function("function_with_closure", |b| {
b.iter(|| compile(black_box("let x = 10; f = y: x + y; in f 5")))
});
group.bench_function("recursive_attrset", |b| {
b.iter(|| {
compile(black_box(
"rec { a = 1; b = a + 1; c = b + 1; d = c + 1; e = d + 1; }",
))
})
});
group.finish();
}
fn bench_full_pipeline(c: &mut Criterion) {
let mut group = c.benchmark_group("full_pipeline");
group.bench_function("simple_eval", |b| b.iter(|| compile(black_box("1 + 1"))));
group.bench_function("fibonacci_10", |b| {
b.iter(|| {
compile(black_box(
"let fib = n: if n <= 1 then 1 else fib (n - 1) + fib (n - 2); in fib 10",
))
})
});
group.bench_function("map_operation", |b| {
b.iter(|| compile(black_box("map (x: x * 2) [1 2 3 4 5 6 7 8 9 10]")))
});
group.bench_function("complex_attrset_access", |b| {
b.iter(|| {
compile(black_box(
"let attrs = { a.b.c = { d.e = 42; }; }; in attrs.a.b.c.d.e",
))
})
});
group.bench_function("with_expression", |b| {
b.iter(|| {
compile(black_box(
"let attrs = { x = 1; y = 2; z = 3; }; in with attrs; x + y + z",
))
})
});
group.finish();
}
fn bench_context_creation(c: &mut Criterion) {
c.bench_function("context_new", |b| {
b.iter(|| {
let _ = Context::new();
})
});
}
fn bench_symbol_interning(c: &mut Criterion) {
let mut group = c.benchmark_group("symbol_interning");
group.bench_function("many_unique_symbols", |b| {
b.iter(|| {
compile(black_box(
"let a1 = 1; a2 = 2; a3 = 3; a4 = 4; a5 = 5; a6 = 6; a7 = 7; a8 = 8; a9 = 9; a10 = 10; in a1 + a2 + a3 + a4 + a5 + a6 + a7 + a8 + a9 + a10",
))
})
});
group.bench_function("repeated_symbols", |b| {
b.iter(|| {
compile(black_box(
"let x = 1; y = x; z = x; a = x; b = x; c = x; in x + y + z + a + b + c",
))
})
});
group.finish();
}
criterion_group!(
benches,
bench_parse_and_downgrade,
bench_codegen,
bench_full_pipeline,
bench_context_creation,
bench_symbol_interning
);
criterion_main!(benches);

172
nix-js/benches/scc_optimization.rs Normal file
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@@ -0,0 +1,172 @@
mod utils;
use criterion::{Criterion, black_box, criterion_group, criterion_main};
use utils::eval;
fn bench_non_recursive(c: &mut Criterion) {
let mut group = c.benchmark_group("non_recursive");
group.bench_function("simple_bindings", |b| {
b.iter(|| eval(black_box("let x = 1; y = 2; z = x + y; in z")))
});
group.bench_function("many_bindings", |b| {
b.iter(|| {
eval(black_box(
"let a = 1; b = 2; c = 3; d = 4; e = 5; f = 6; g = 7; h = 8; i = 9; j = 10; in a + b + c + d + e + f + g + h + i + j",
))
})
});
group.bench_function("dependent_chain", |b| {
b.iter(|| {
eval(black_box(
"let a = 1; b = a + 1; c = b + 1; d = c + 1; e = d + 1; in e",
))
})
});
group.bench_function("rec_attrset_non_recursive", |b| {
b.iter(|| eval(black_box("rec { a = 1; b = 2; c = 3; d = a + b + c; }.d")))
});
group.finish();
}
fn bench_recursive(c: &mut Criterion) {
let mut group = c.benchmark_group("recursive");
group.bench_function("simple_recursion", |b| {
b.iter(|| {
eval(black_box(
"let f = n: if n == 0 then 0 else f (n - 1); in f 10",
))
})
});
group.bench_function("fibonacci", |b| {
b.iter(|| {
eval(black_box(
"let fib = n: if n <= 1 then 1 else fib (n - 1) + fib (n - 2); in fib 10",
))
})
});
group.bench_function("factorial", |b| {
b.iter(|| {
eval(black_box(
"let factorial = n: if n == 0 then 1 else n * factorial (n - 1); in factorial 10",
))
})
});
group.bench_function("rec_attrset_recursive", |b| {
b.iter(|| {
eval(black_box(
"rec { f = n: if n == 0 then 1 else f (n - 1); }.f 10",
))
})
});
group.finish();
}
fn bench_mutual_recursion(c: &mut Criterion) {
let mut group = c.benchmark_group("mutual_recursion");
group.bench_function("two_way", |b| {
b.iter(|| {
eval(black_box(
"let f = n: if n == 0 then 0 else g (n - 1); g = n: if n == 0 then 1 else f (n - 1); in f 10",
))
})
});
group.bench_function("even_odd", |b| {
b.iter(|| {
eval(black_box(
"let even = n: if n == 0 then true else odd (n - 1); odd = n: if n == 0 then false else even (n - 1); in even 20",
))
})
});
group.bench_function("three_way", |b| {
b.iter(|| {
eval(black_box(
"let a = n: if n == 0 then 1 else b (n - 1); b = n: if n == 0 then 2 else c (n - 1); c = n: if n == 0 then 3 else a (n - 1); in a 15",
))
})
});
group.finish();
}
fn bench_mixed(c: &mut Criterion) {
let mut group = c.benchmark_group("mixed");
group.bench_function("recursive_with_constants", |b| {
b.iter(|| {
eval(black_box(
"let x = 10; fib = n: if n <= 1 then 1 else fib (n - 1) + fib (n - 2); in fib x",
))
})
});
group.bench_function("multiple_recursive_functions", |b| {
b.iter(|| {
eval(black_box(
"let fib = n: if n <= 1 then 1 else fib (n - 1) + fib (n - 2); fact = n: if n == 0 then 1 else n * fact (n - 1); in (fib 8) + (fact 5)",
))
})
});
group.bench_function("complex_dependency_graph", |b| {
b.iter(|| {
eval(black_box(
"let a = 1; b = 2; c = a + b; fib = n: if n <= 1 then 1 else fib (n - 1) + fib (n - 2); result = c + fib 8; in result",
))
})
});
group.finish();
}
fn bench_nested_scopes(c: &mut Criterion) {
let mut group = c.benchmark_group("nested_scopes");
group.bench_function("nested_let_non_recursive", |b| {
b.iter(|| {
eval(black_box(
"let x = 1; in let y = x + 1; in let z = y + 1; in z",
))
})
});
group.bench_function("nested_let_with_recursive", |b| {
b.iter(|| {
eval(black_box(
"let f = n: if n == 0 then 0 else f (n - 1); in let g = m: f m; in g 10",
))
})
});
group.bench_function("deeply_nested", |b| {
b.iter(|| {
eval(black_box(
"let a = 1; in let b = a + 1; in let c = b + 1; in let d = c + 1; in let e = d + 1; in e",
))
})
});
group.finish();
}
criterion_group!(
benches,
bench_non_recursive,
bench_recursive,
bench_mutual_recursion,
bench_mixed,
bench_nested_scopes
);
criterion_main!(benches);

16
nix-js/benches/utils.rs Normal file
View File

@@ -0,0 +1,16 @@
#![allow(dead_code)]
use nix_js::context::Context;
use nix_js::value::Value;
pub fn eval(expr: &str) -> Value {
Context::new().unwrap().eval_code(expr).unwrap()
}
pub fn eval_result(expr: &str) -> Result<Value, nix_js::error::Error> {
Context::new().unwrap().eval_code(expr)
}
pub fn compile(expr: &str) -> String {
Context::new().unwrap().compile_code(expr).unwrap()
}

24
nix-js/runtime-ts/src/builtins/arithmetic.ts
View File

@@ -3,33 +3,33 @@
*/ */
import type { NixBool, NixInt, NixNumber, NixValue } from "../types"; import type { NixBool, NixInt, NixNumber, NixValue } from "../types";
import { force_numeric, coerce_numeric, force_int } from "../type-assert"; import { forceNumeric, coerceNumeric, forceInt } from "../type-assert";
export const add = export const add =
(a: NixValue) => (a: NixValue) =>
(b: NixValue): bigint | number => { (b: NixValue): bigint | number => {
const [av, bv] = coerce_numeric(force_numeric(a), force_numeric(b)); const [av, bv] = coerceNumeric(forceNumeric(a), forceNumeric(b));
return (av as any) + (bv as any); return (av as any) + (bv as any);
}; };
export const sub = export const sub =
(a: NixValue) => (a: NixValue) =>
(b: NixValue): bigint | number => { (b: NixValue): bigint | number => {
const [av, bv] = coerce_numeric(force_numeric(a), force_numeric(b)); const [av, bv] = coerceNumeric(forceNumeric(a), forceNumeric(b));
return (av as any) - (bv as any); return (av as any) - (bv as any);
}; };
export const mul = export const mul =
(a: NixValue) => (a: NixValue) =>
(b: NixValue): bigint | number => { (b: NixValue): bigint | number => {
const [av, bv] = coerce_numeric(force_numeric(a), force_numeric(b)); const [av, bv] = coerceNumeric(forceNumeric(a), forceNumeric(b));
return (av as any) * (bv as any); return (av as any) * (bv as any);
}; };
export const div = export const div =
(a: NixValue) => (a: NixValue) =>
(b: NixValue): NixNumber => { (b: NixValue): NixNumber => {
const [av, bv] = coerce_numeric(force_numeric(a), force_numeric(b)); const [av, bv] = coerceNumeric(forceNumeric(a), forceNumeric(b));
if (bv === 0 || bv === 0n) { if (bv === 0 || bv === 0n) {
throw new RangeError("Division by zero"); throw new RangeError("Division by zero");
@@ -42,28 +42,28 @@ export const div =
export const bitAnd = export const bitAnd =
(a: NixValue) => (a: NixValue) =>
(b: NixValue): NixInt => { (b: NixValue): NixInt => {
const av = force_int(a); const av = forceInt(a);
const bv = force_int(b); const bv = forceInt(b);
return av & bv; return av & bv;
}; };
export const bitOr = export const bitOr =
(a: NixValue) => (a: NixValue) =>
(b: NixValue): NixInt => { (b: NixValue): NixInt => {
const av = force_int(a); const av = forceInt(a);
const bv = force_int(b); const bv = forceInt(b);
return av | bv; return av | bv;
}; };
export const bitXor = export const bitXor =
(a: NixValue) => (a: NixValue) =>
(b: NixValue): NixInt => { (b: NixValue): NixInt => {
const av = force_int(a); const av = forceInt(a);
const bv = force_int(b); const bv = forceInt(b);
return av ^ bv; return av ^ bv;
}; };
export const lessThan = export const lessThan =
(a: NixValue) => (a: NixValue) =>
(b: NixValue): NixBool => (b: NixValue): NixBool =>
force_numeric(a) < force_numeric(b); forceNumeric(a) < forceNumeric(b);

42
nix-js/runtime-ts/src/builtins/attrs.ts
View File

@@ -3,30 +3,30 @@
*/ */
import type { NixValue, NixAttrs, NixList } from "../types"; import type { NixValue, NixAttrs, NixList } from "../types";
import { force_attrs, force_string, force_function, force_list } from "../type-assert"; import { forceAttrs, forceString, forceFunction, forceList } from "../type-assert";
export const attrNames = (set: NixValue): string[] => Object.keys(force_attrs(set)).sort(); export const attrNames = (set: NixValue): string[] => Object.keys(forceAttrs(set)).sort();
export const attrValues = (set: NixValue): NixValue[] => Object.values(force_attrs(set)); export const attrValues = (set: NixValue): NixValue[] => Object.values(forceAttrs(set));
export const getAttr = export const getAttr =
(s: NixValue) => (s: NixValue) =>
(set: NixValue): NixValue => (set: NixValue): NixValue =>
force_attrs(set)[force_string(s)]; forceAttrs(set)[forceString(s)];
export const hasAttr = export const hasAttr =
(s: NixValue) => (s: NixValue) =>
(set: NixValue): boolean => (set: NixValue): boolean =>
Object.hasOwn(force_attrs(set), force_string(s)); Object.hasOwn(forceAttrs(set), forceString(s));
export const mapAttrs = export const mapAttrs =
(f: NixValue) => (f: NixValue) =>
(attrs: NixValue): NixAttrs => { (attrs: NixValue): NixAttrs => {
const new_attrs: NixAttrs = {}; const new_attrs: NixAttrs = {};
const forced_attrs = force_attrs(attrs); const forced_attrs = forceAttrs(attrs);
const forced_f = force_function(f); const forced_f = forceFunction(f);
for (const key in forced_attrs) { for (const key in forced_attrs) {
new_attrs[key] = forced_f(key)(forced_attrs[key]); new_attrs[key] = forceFunction(forced_f(key))(forced_attrs[key]);
} }
return new_attrs; return new_attrs;
}; };
@@ -35,8 +35,8 @@ export const removeAttrs =
(attrs: NixValue) => (attrs: NixValue) =>
(list: NixValue): NixAttrs => { (list: NixValue): NixAttrs => {
const new_attrs: NixAttrs = {}; const new_attrs: NixAttrs = {};
const forced_attrs = force_attrs(attrs); const forced_attrs = forceAttrs(attrs);
const forced_list = force_list(list); const forced_list = forceList(list);
for (const key in forced_attrs) { for (const key in forced_attrs) {
if (!(key in forced_list)) { if (!(key in forced_list)) {
@@ -48,10 +48,10 @@ export const removeAttrs =
export const listToAttrs = (e: NixValue): NixAttrs => { export const listToAttrs = (e: NixValue): NixAttrs => {
const attrs: NixAttrs = {}; const attrs: NixAttrs = {};
const forced_e = [...force_list(e)].reverse(); const forced_e = [...forceList(e)].reverse();
for (const obj of forced_e) { for (const obj of forced_e) {
const item = force_attrs(obj); const item = forceAttrs(obj);
attrs[force_string(item.name)] = item.value; attrs[forceString(item.name)] = item.value;
} }
return attrs; return attrs;
}; };
@@ -59,8 +59,8 @@ export const listToAttrs = (e: NixValue): NixAttrs => {
export const intersectAttrs = export const intersectAttrs =
(e1: NixValue) => (e1: NixValue) =>
(e2: NixValue): NixAttrs => { (e2: NixValue): NixAttrs => {
const f1 = force_attrs(e1); const f1 = forceAttrs(e1);
const f2 = force_attrs(e2); const f2 = forceAttrs(e2);
const attrs: NixAttrs = {}; const attrs: NixAttrs = {};
for (const key of Object.keys(f2)) { for (const key of Object.keys(f2)) {
if (Object.hasOwn(f1, key)) { if (Object.hasOwn(f1, key)) {
@@ -73,9 +73,9 @@ export const intersectAttrs =
export const catAttrs = export const catAttrs =
(attr: NixValue) => (attr: NixValue) =>
(list: NixValue): NixList => { (list: NixValue): NixList => {
const key = force_string(attr); const key = forceString(attr);
return force_list(list) return forceList(list)
.map((set) => force_attrs(set)[key]) .map((set) => forceAttrs(set)[key])
.filter((val) => val !== undefined); .filter((val) => val !== undefined);
}; };
@@ -83,10 +83,10 @@ export const groupBy =
(f: NixValue) => (f: NixValue) =>
(list: NixValue): NixAttrs => { (list: NixValue): NixAttrs => {
const attrs: NixAttrs = {}; const attrs: NixAttrs = {};
const forced_f = force_function(f); const forced_f = forceFunction(f);
const forced_list = force_list(list); const forced_list = forceList(list);
for (const elem of forced_list) { for (const elem of forced_list) {
const key = force_string(forced_f(elem)); const key = forceString(forced_f(elem));
if (!attrs[key]) attrs[key] = []; if (!attrs[key]) attrs[key] = [];
(attrs[key] as NixList).push(elem); (attrs[key] as NixList).push(elem);
} }

177
nix-js/runtime-ts/src/builtins/conversion.ts
View File

@@ -1,8 +1,9 @@
/** /**
* Conversion and serialization builtin functions (unimplemented) * Conversion and serialization builtin functions
*/ */
import type { NixValue } from "../types"; import type { NixValue } from "../types";
import { force } from "../thunk";
export const fromJSON = (e: NixValue): never => { export const fromJSON = (e: NixValue): never => {
throw new Error("Not implemented: fromJSON"); throw new Error("Not implemented: fromJSON");
@@ -20,6 +21,176 @@ export const toXML = (e: NixValue): never => {
throw new Error("Not implemented: toXML"); throw new Error("Not implemented: toXML");
}; };
export const toString = (name: NixValue, s: NixValue): never => { /**
throw new Error("Not implemented: toString"); * String coercion modes control which types can be coerced to strings
*
* - Base: Only strings are allowed (no coercion)
* - Interpolation: Used in string interpolation "${expr}" - allows strings and integers
* - ToString: Used in builtins.toString - allows all types (bools, floats, null, lists, etc.)
*/
export enum StringCoercionMode {
Base = 0,
Interpolation = 1,
ToString = 2,
}
/**
* Helper function to get human-readable type names for error messages
*/
const typeName = (value: NixValue): string => {
const val = force(value);
if (typeof val === "bigint") return "int";
if (typeof val === "number") return "float";
if (typeof val === "boolean") return "boolean";
if (typeof val === "string") return "string";
if (val === null) return "null";
if (Array.isArray(val)) return "list";
if (typeof val === "function") return "lambda";
if (typeof val === "object") return "attribute set";
return `unknown type`;
};
/**
* Coerce a Nix value to a string according to the specified mode.
* This implements the same behavior as Lix's EvalState::coerceToString.
*
* @param value - The value to coerce
* @param mode - The coercion mode (controls which types are allowed)
* @param copyToStore - If true, paths should be copied to the Nix store (not implemented yet)
* @returns The string representation of the value
* @throws TypeError if the value cannot be coerced in the given mode
*
* Coercion rules by type:
* - String: Always returns as-is
* - Path: Returns the path string (copyToStore not implemented yet)
* - Integer: Only in Interpolation or ToString mode
* - Float: Only in ToString mode
* - Boolean: Only in ToString mode (true → "1", false → "")
* - Null: Only in ToString mode (→ "")
* - List: Only in ToString mode (recursively coerce elements, join with spaces)
* - Attrs: Check for __toString method or outPath attribute
* - Function: Never coercible (throws error)
*/
export const coerceToString = (
value: NixValue,
mode: StringCoercionMode = StringCoercionMode.ToString,
copyToStore: boolean = false,
): string => {
const v = force(value);
// Strings are always returned as-is, regardless of mode
if (typeof v === "string") {
return v;
}
// Attribute sets can define custom string conversion via __toString method
// or may have an outPath attribute (for derivations and paths)
if (typeof v === "object" && v !== null && !Array.isArray(v)) {
// First, try the __toString method if present
// This allows custom types to define their own string representation
if ("__toString" in v) {
// Force the method in case it's a thunk
const toStringMethod = force(v["__toString"]);
if (typeof toStringMethod === "function") {
// Call the method with self as argument
const result = force(toStringMethod(v));
if (typeof result !== "string") {
throw new TypeError(`__toString returned ${typeName(result)} instead of string`);
}
return result;
}
}
// If no __toString, try outPath (used for derivations and store paths)
// This allows derivation objects like { outPath = "/nix/store/..."; } to be coerced
if ("outPath" in v) {
// Recursively coerce the outPath value (it might itself be an attrs with __toString)
return coerceToString(v["outPath"], mode, copyToStore);
}
// Attribute sets without __toString or outPath cannot be coerced
throw new TypeError(`cannot coerce ${typeName(v)} to a string`);
}
// Integer coercion is allowed in Interpolation and ToString modes
// This enables string interpolation like "value: ${42}"
if (mode >= StringCoercionMode.Interpolation) {
if (typeof v === "bigint") {
return v.toString();
}
}
// The following types are only coercible in ToString mode (builtins.toString)
if (mode >= StringCoercionMode.ToString) {
// Booleans: true → "1", false → ""
// This is for shell scripting convenience (same as null)
if (typeof v === "boolean") {
return v ? "1" : "";
}
// Floats are converted using JavaScript's default toString
if (typeof v === "number") {
return v.toString();
}
// Null becomes empty string (for shell scripting convenience)
if (v === null) {
return "";
}
// Lists are recursively converted and joined with spaces
// We cannot use Array.join() directly because of special spacing rules:
// - Elements are recursively coerced to strings
// - Spaces are added between elements, BUT:
// * No space is added after an element if it's an empty list
// * The last element never gets a trailing space
//
// Examples:
// - [ 1 2 3 ] → "1 2 3"
// - [ 1 [ ] 2 ] → "1 2" (empty list doesn't add space)
// - [ 1 [ [ ] ] 2 ] → "1 2" (nested empty list is not itself empty, so adds space)
// - [ [ 1 2 ] [ 3 4 ] ] → "1 2 3 4" (nested lists flatten)
if (Array.isArray(v)) {
let result = "";
for (let i = 0; i < v.length; i++) {
const item = v[i];
// Recursively convert element to string
const str = coerceToString(item, mode, copyToStore);
result += str;
// Add space after this element if:
// 1. It's not the last element, AND
// 2. The element is not an empty list
//
// Note: We check if the ELEMENT is an empty list, not if its
// string representation is empty.
// For example, [[]] is not an empty list (length 1), so it gets
// a trailing space even though its toString is "".
if (i < v.length - 1) {
const forcedItem = force(item);
if (!Array.isArray(forcedItem) || forcedItem.length !== 0) {
result += " ";
}
}
}
return result;
}
}
throw new TypeError(`cannot coerce ${typeName(v)} to a string`);
};
/**
* builtins.toString - Convert a value to a string
*
* This is the public builtin function exposed to Nix code.
* It uses ToString mode, which allows coercing all types except functions.
*
* @param value - The value to convert to a string
* @returns The string representation
*/
export const toStringFunc = (value: NixValue): string => {
return coerceToString(value, StringCoercionMode.ToString, false);
}; };

4
nix-js/runtime-ts/src/builtins/functional.ts
View File

@@ -4,7 +4,7 @@
import { CatchableError, type NixValue } from "../types"; import { CatchableError, type NixValue } from "../types";
import { force } from "../thunk"; import { force } from "../thunk";
import { force_string } from "../type-assert"; import { forceString } from "../type-assert";
export const seq = export const seq =
(e1: NixValue) => (e1: NixValue) =>
@@ -24,7 +24,7 @@ export const abort = (s: NixValue): never => {
}; };
export const throwFunc = (s: NixValue): never => { export const throwFunc = (s: NixValue): never => {
throw new CatchableError(force_string(s)); throw new CatchableError(forceString(s));
}; };
export const trace = (e1: NixValue, e2: NixValue): NixValue => { export const trace = (e1: NixValue, e2: NixValue): NixValue => {

10
nix-js/runtime-ts/src/builtins/index.ts
View File

@@ -3,7 +3,7 @@
* Combines all builtin function categories into the global `builtins` object * Combines all builtin function categories into the global `builtins` object
*/ */
import { create_thunk } from "../thunk"; import { createThunk } from "../thunk";
/** /**
* Symbol used to mark functions as primops (primitive operations) * Symbol used to mark functions as primops (primitive operations)
@@ -211,7 +211,7 @@ export const builtins: any = {
fromTOML: mkPrimop(conversion.fromTOML, "fromTOML", 1), fromTOML: mkPrimop(conversion.fromTOML, "fromTOML", 1),
toJSON: mkPrimop(conversion.toJSON, "toJSON", 1), toJSON: mkPrimop(conversion.toJSON, "toJSON", 1),
toXML: mkPrimop(conversion.toXML, "toXML", 1), toXML: mkPrimop(conversion.toXML, "toXML", 1),
toString: mkPrimop(conversion.toString, "toString", 1), toString: mkPrimop(conversion.toStringFunc, "toString", 1),
addErrorContext: mkPrimop(misc.addErrorContext, "addErrorContext", 1), addErrorContext: mkPrimop(misc.addErrorContext, "addErrorContext", 1),
appendContext: mkPrimop(misc.appendContext, "appendContext", 1), appendContext: mkPrimop(misc.appendContext, "appendContext", 1),
@@ -247,11 +247,11 @@ export const builtins: any = {
tryEval: mkPrimop(misc.tryEval, "tryEval", 1), tryEval: mkPrimop(misc.tryEval, "tryEval", 1),
zipAttrsWith: mkPrimop(misc.zipAttrsWith, "zipAttrsWith", 2), zipAttrsWith: mkPrimop(misc.zipAttrsWith, "zipAttrsWith", 2),
builtins: create_thunk(() => builtins), builtins: createThunk(() => builtins),
currentSystem: create_thunk(() => { currentSystem: createThunk(() => {
throw new Error("Not implemented: currentSystem"); throw new Error("Not implemented: currentSystem");
}), }),
currentTime: create_thunk(() => Date.now()), currentTime: createThunk(() => Date.now()),
false: false, false: false,
true: true, true: true,

13
nix-js/runtime-ts/src/builtins/io.ts
View File

@@ -3,23 +3,20 @@
* Implemented via Rust ops exposed through deno_core * Implemented via Rust ops exposed through deno_core
*/ */
import { forceString } from "../type-assert";
import type { NixValue } from "../types"; import type { NixValue } from "../types";
import { force_string } from "../type-assert";
// Declare Deno.core.ops global (provided by deno_core runtime) // Declare Deno.core.ops global (provided by deno_core runtime)
export const importFunc = (path: NixValue): NixValue => { export const importFunc = (path: NixValue): NixValue => {
// For MVP: only support string paths // For MVP: only support string paths
// TODO: After implementing path type, also accept path values // TODO: After implementing path type, also accept path values
const pathStr = force_string(path); const pathStr = forceString(path);
// Call Rust op - returns JS code string // Call Rust op - returns JS code string
const code = Deno.core.ops.op_import(pathStr); const code = Deno.core.ops.op_import(pathStr);
// Eval in current context - returns V8 value directly! return Function(`return (${code})`)();
// (0, eval) = indirect eval = global scope
// Wrap in parentheses to ensure object literals are parsed correctly
return (0, eval)(`(${code})`);
}; };
export const scopedImport = export const scopedImport =
@@ -61,7 +58,7 @@ export const readDir = (path: NixValue): never => {
}; };
export const readFile = (path: NixValue): string => { export const readFile = (path: NixValue): string => {
const pathStr = force_string(path); const pathStr = forceString(path);
return Deno.core.ops.op_read_file(pathStr); return Deno.core.ops.op_read_file(pathStr);
}; };
@@ -70,7 +67,7 @@ export const readFileType = (path: NixValue): never => {
}; };
export const pathExists = (path: NixValue): boolean => { export const pathExists = (path: NixValue): boolean => {
const pathStr = force_string(path); const pathStr = forceString(path);
return Deno.core.ops.op_path_exists(pathStr); return Deno.core.ops.op_path_exists(pathStr);
}; };

52
nix-js/runtime-ts/src/builtins/list.ts
View File

@@ -5,38 +5,38 @@
import type { NixValue, NixList, NixAttrs } from "../types"; import type { NixValue, NixList, NixAttrs } from "../types";
import { force } from "../thunk"; import { force } from "../thunk";
import { force_list, force_function, force_numeric, force_int } from "../type-assert"; import { forceList, forceFunction, forceInt } from "../type-assert";
export const map = export const map =
(f: NixValue) => (f: NixValue) =>
(list: NixValue): NixList => (list: NixValue): NixList =>
force_list(list).map(force_function(f)); forceList(list).map(forceFunction(f));
export const filter = export const filter =
(f: NixValue) => (f: NixValue) =>
(list: NixValue): NixList => (list: NixValue): NixList =>
force_list(list).filter(force_function(f)); forceList(list).filter(forceFunction(f));
export const length = (e: NixValue): bigint => { export const length = (e: NixValue): bigint => {
const forced = force(e); const forced = force(e);
if (typeof forced === "string") return BigInt(forced.length); if (typeof forced === "string") return BigInt(forced.length);
return BigInt(force_list(forced).length); return BigInt(forceList(forced).length);
}; };
export const head = (list: NixValue): NixValue => force_list(list)[0]; export const head = (list: NixValue): NixValue => forceList(list)[0];
export const tail = (list: NixValue): NixList => force_list(list).slice(1); export const tail = (list: NixValue): NixList => forceList(list).slice(1);
export const elem = export const elem =
(x: NixValue) => (x: NixValue) =>
(xs: NixValue): boolean => (xs: NixValue): boolean =>
force_list(xs).includes(force(x)); forceList(xs).includes(force(x));
export const elemAt = export const elemAt =
(xs: NixValue) => (xs: NixValue) =>
(n: NixValue): NixValue => { (n: NixValue): NixValue => {
const list = force_list(xs); const list = forceList(xs);
const idx = Number(force_int(n)); const idx = Number(forceInt(n));
if (idx < 0 || idx >= list.length) { if (idx < 0 || idx >= list.length) {
throw new RangeError(`Index ${idx} out of bounds for list of length ${list.length}`); throw new RangeError(`Index ${idx} out of bounds for list of length ${list.length}`);
@@ -46,16 +46,16 @@ export const elemAt =
}; };
export const concatLists = (lists: NixValue): NixList => { export const concatLists = (lists: NixValue): NixList => {
return force_list(lists).reduce((acc: NixList, cur: NixValue) => { return forceList(lists).reduce((acc: NixList, cur: NixValue) => {
return acc.concat(force_list(cur)); return acc.concat(forceList(cur));
}, []); }, []);
}; };
export const concatMap = export const concatMap =
(f: NixValue) => (f: NixValue) =>
(lists: NixValue): NixList => { (lists: NixValue): NixList => {
const fn = force_function(f); const fn = forceFunction(f);
return force_list(lists).reduce((acc: NixList, cur: NixValue) => { return forceList(lists).reduce((acc: NixList, cur: NixValue) => {
return acc.concat(force(fn(cur)) as NixList); return acc.concat(force(fn(cur)) as NixList);
}, []); }, []);
}; };
@@ -64,20 +64,20 @@ export const foldlPrime =
(op_fn: NixValue) => (op_fn: NixValue) =>
(nul: NixValue) => (nul: NixValue) =>
(list: NixValue): NixValue => { (list: NixValue): NixValue => {
const forced_op = force_function(op_fn); const forced_op = forceFunction(op_fn);
return force_list(list).reduce((acc: NixValue, cur: NixValue) => { return forceList(list).reduce((acc: NixValue, cur: NixValue) => {
return forced_op(acc)(cur); return forceFunction(forced_op(acc))(cur);
}, nul); }, nul);
}; };
export const sort = export const sort =
(cmp: NixValue) => (cmp: NixValue) =>
(list: NixValue): NixList => { (list: NixValue): NixList => {
const forced_list = [...force_list(list)]; const forced_list = [...forceList(list)];
const forced_cmp = force_function(cmp); const forced_cmp = forceFunction(cmp);
return forced_list.sort((a, b) => { return forced_list.sort((a, b) => {
if (force(forced_cmp(a)(b))) return -1; if (force(forceFunction(forced_cmp(a))(b))) return -1;
if (force(forced_cmp(b)(a))) return 1; if (force(forceFunction(forced_cmp(b))(a))) return 1;
return 0; return 0;
}); });
}; };
@@ -85,8 +85,8 @@ export const sort =
export const partition = export const partition =
(pred: NixValue) => (pred: NixValue) =>
(list: NixValue): NixAttrs => { (list: NixValue): NixAttrs => {
const forced_list = force_list(list); const forced_list = forceList(list);
const forced_pred = force_function(pred); const forced_pred = forceFunction(pred);
const attrs: NixAttrs = { const attrs: NixAttrs = {
right: [], right: [],
wrong: [], wrong: [],
@@ -104,8 +104,8 @@ export const partition =
export const genList = export const genList =
(f: NixValue) => (f: NixValue) =>
(len: NixValue): NixList => { (len: NixValue): NixList => {
const func = force_function(f); const func = forceFunction(f);
const length = force_int(len); const length = forceInt(len);
if (length < 0) { if (length < 0) {
throw new TypeError(`genList length must be non-negative integer, got ${length}`); throw new TypeError(`genList length must be non-negative integer, got ${length}`);
@@ -117,9 +117,9 @@ export const genList =
export const all = export const all =
(pred: NixValue) => (pred: NixValue) =>
(list: NixValue): boolean => (list: NixValue): boolean =>
force_list(list).every(force_function(pred)); forceList(list).every(forceFunction(pred));
export const any = export const any =
(pred: NixValue) => (pred: NixValue) =>
(list: NixValue): boolean => (list: NixValue): boolean =>
force_list(list).some(force_function(pred)); forceList(list).some(forceFunction(pred));

6
nix-js/runtime-ts/src/builtins/math.ts
View File

@@ -3,16 +3,16 @@
*/ */
import type { NixValue } from "../types"; import type { NixValue } from "../types";
import { force_numeric } from "../type-assert"; import { forceNumeric } from "../type-assert";
export const ceil = (x: NixValue): bigint => { export const ceil = (x: NixValue): bigint => {
const val = force_numeric(x); const val = forceNumeric(x);
if (typeof val === "bigint") return val; // Already an integer if (typeof val === "bigint") return val; // Already an integer
return BigInt(Math.ceil(val)); // Convert to integer return BigInt(Math.ceil(val)); // Convert to integer
}; };
export const floor = (x: NixValue): bigint => { export const floor = (x: NixValue): bigint => {
const val = force_numeric(x); const val = forceNumeric(x);
if (typeof val === "bigint") return val; // Already an integer if (typeof val === "bigint") return val; // Already an integer
return BigInt(Math.floor(val)); // Convert to integer return BigInt(Math.floor(val)); // Convert to integer
}; };

2
nix-js/runtime-ts/src/builtins/misc.ts
View File

@@ -1,5 +1,5 @@
/** /**
* Miscellaneous unimplemented builtin functions * Miscellaneous builtin functions
*/ */
import { force } from "../thunk"; import { force } from "../thunk";

14
nix-js/runtime-ts/src/builtins/string.ts
View File

@@ -3,27 +3,27 @@
*/ */
import type { NixValue } from "../types"; import type { NixValue } from "../types";
import { force_string, force_list, force_int } from "../type-assert"; import { forceString, forceList, forceInt } from "../type-assert";
export const stringLength = (e: NixValue): number => force_string(e).length; export const stringLength = (e: NixValue): number => forceString(e).length;
export const substring = export const substring =
(start: NixValue) => (start: NixValue) =>
(len: NixValue) => (len: NixValue) =>
(s: NixValue): string => { (s: NixValue): string => {
const str = force_string(s); const str = forceString(s);
const startPos = Number(force_int(start)); const startPos = Number(forceInt(start));
const length = Number(force_int(len)); const length = Number(forceInt(len));
return str.substring(startPos, startPos + length); return str.substring(startPos, startPos + length);
}; };
export const concatStringsSep = export const concatStringsSep =
(sep: NixValue) => (sep: NixValue) =>
(list: NixValue): string => (list: NixValue): string =>
force_list(list).join(force_string(sep)); forceList(list).join(forceString(sep));
export const baseNameOf = (x: NixValue): string => { export const baseNameOf = (x: NixValue): string => {
const str = force_string(x); const str = forceString(x);
if (str.length === 0) return ""; if (str.length === 0) return "";
let last = str.length - 1; let last = str.length - 1;

24
nix-js/runtime-ts/src/helpers.ts
View File

@@ -3,7 +3,7 @@
*/ */
import type { NixValue, NixAttrs, NixBool } from "./types"; import type { NixValue, NixAttrs, NixBool } from "./types";
import { force_attrs, force_string } from "./type-assert"; import { forceAttrs, forceString } from "./type-assert";
import { isAttrs } from "./builtins/type-check"; import { isAttrs } from "./builtins/type-check";
/** /**
@@ -13,8 +13,8 @@ import { isAttrs } from "./builtins/type-check";
* @param path - Path string (may be relative or absolute) * @param path - Path string (may be relative or absolute)
* @returns Absolute path string * @returns Absolute path string
*/ */
export const resolve_path = (path: NixValue): string => { export const resolvePath = (path: NixValue): string => {
const path_str = force_string(path); const path_str = forceString(path);
return Deno.core.ops.op_resolve_path(path_str); return Deno.core.ops.op_resolve_path(path_str);
}; };
@@ -28,8 +28,8 @@ export const resolve_path = (path: NixValue): string => {
* @throws Error if obj is null/undefined or key not found * @throws Error if obj is null/undefined or key not found
*/ */
export const select = (obj: NixValue, key: NixValue): NixValue => { export const select = (obj: NixValue, key: NixValue): NixValue => {
const forced_obj = force_attrs(obj); const forced_obj = forceAttrs(obj);
const forced_key = force_string(key); const forced_key = forceString(key);
if (!(forced_key in forced_obj)) { if (!(forced_key in forced_obj)) {
throw new Error(`Attribute '${forced_key}' not found`); throw new Error(`Attribute '${forced_key}' not found`);
@@ -47,9 +47,9 @@ export const select = (obj: NixValue, key: NixValue): NixValue => {
* @param default_val - Value to return if key not found * @param default_val - Value to return if key not found
* @returns obj[key] if exists, otherwise default_val * @returns obj[key] if exists, otherwise default_val
*/ */
export const select_with_default = (obj: NixValue, key: NixValue, default_val: NixValue): NixValue => { export const selectWithDefault = (obj: NixValue, key: NixValue, default_val: NixValue): NixValue => {
const attrs = force_attrs(obj); const attrs = forceAttrs(obj);
const forced_key = force_string(key); const forced_key = forceString(key);
if (!(forced_key in attrs)) { if (!(forced_key in attrs)) {
return default_val; return default_val;
@@ -58,14 +58,14 @@ export const select_with_default = (obj: NixValue, key: NixValue, default_val: N
return attrs[forced_key]; return attrs[forced_key];
}; };
export const has_attr = (obj: NixValue, attrpath: NixValue[]): NixBool => { export const hasAttr = (obj: NixValue, attrpath: NixValue[]): NixBool => {
if (!isAttrs(obj)) { if (!isAttrs(obj)) {
return false; return false;
} }
let attrs = obj; let attrs = obj;
for (const attr of attrpath.slice(0, -1)) { for (const attr of attrpath.slice(0, -1)) {
const cur = attrs[force_string(attr)]; const cur = attrs[forceString(attr)];
if (!isAttrs(cur)) { if (!isAttrs(cur)) {
return false; return false;
} }
@@ -89,12 +89,12 @@ export const has_attr = (obj: NixValue, attrpath: NixValue[]): NixBool => {
* @returns The forced argument object * @returns The forced argument object
* @throws Error if required param missing or unexpected param present * @throws Error if required param missing or unexpected param present
*/ */
export const validate_params = ( export const validateParams = (
arg: NixValue, arg: NixValue,
required: string[] | null, required: string[] | null,
allowed: string[] | null, allowed: string[] | null,
): NixAttrs => { ): NixAttrs => {
const forced_arg = force_attrs(arg); const forced_arg = forceAttrs(arg);
// Check required parameters // Check required parameters
if (required) { if (required) {

19
nix-js/runtime-ts/src/index.ts
View File

@@ -4,10 +4,11 @@
* All functionality is exported via the global `Nix` object * All functionality is exported via the global `Nix` object
*/ */
import { create_thunk, force, is_thunk, IS_THUNK } from "./thunk"; import { createThunk, force, isThunk, IS_THUNK } from "./thunk";
import { select, select_with_default, validate_params, resolve_path, has_attr } from "./helpers"; import { select, selectWithDefault, validateParams, resolvePath, hasAttr } from "./helpers";
import { op } from "./operators"; import { op } from "./operators";
import { builtins, PRIMOP_METADATA } from "./builtins"; import { builtins, PRIMOP_METADATA } from "./builtins";
import { coerceToString, StringCoercionMode } from "./builtins/conversion";
export type NixRuntime = typeof Nix; export type NixRuntime = typeof Nix;
@@ -15,16 +16,18 @@ export type NixRuntime = typeof Nix;
* The global Nix runtime object * The global Nix runtime object
*/ */
export const Nix = { export const Nix = {
create_thunk, createThunk,
force, force,
is_thunk, isThunk,
IS_THUNK, IS_THUNK,
has_attr, hasAttr,
select, select,
select_with_default, selectWithDefault,
validate_params, validateParams,
resolve_path, resolvePath,
coerceToString,
StringCoercionMode,
op, op,
builtins, builtins,

22
nix-js/runtime-ts/src/operators.ts
View File

@@ -5,7 +5,7 @@
import type { NixValue, NixList, NixAttrs } from "./types"; import type { NixValue, NixList, NixAttrs } from "./types";
import { force } from "./thunk"; import { force } from "./thunk";
import { force_numeric, force_list, force_attrs, coerce_numeric } from "./type-assert"; import { forceNumeric, forceList, forceAttrs, coerceNumeric } from "./type-assert";
/** /**
* Operator object exported as Nix.op * Operator object exported as Nix.op
@@ -15,22 +15,22 @@ export const op = {
// Arithmetic operators - preserve int/float distinction // Arithmetic operators - preserve int/float distinction
add: (a: NixValue, b: NixValue): bigint | number => { add: (a: NixValue, b: NixValue): bigint | number => {
// FIXME: String & Path // FIXME: String & Path
const [av, bv] = coerce_numeric(force_numeric(a), force_numeric(b)); const [av, bv] = coerceNumeric(forceNumeric(a), forceNumeric(b));
return (av as any) + (bv as any); return (av as any) + (bv as any);
}, },
sub: (a: NixValue, b: NixValue): bigint | number => { sub: (a: NixValue, b: NixValue): bigint | number => {
const [av, bv] = coerce_numeric(force_numeric(a), force_numeric(b)); const [av, bv] = coerceNumeric(forceNumeric(a), forceNumeric(b));
return (av as any) - (bv as any); return (av as any) - (bv as any);
}, },
mul: (a: NixValue, b: NixValue): bigint | number => { mul: (a: NixValue, b: NixValue): bigint | number => {
const [av, bv] = coerce_numeric(force_numeric(a), force_numeric(b)); const [av, bv] = coerceNumeric(forceNumeric(a), forceNumeric(b));
return (av as any) * (bv as any); return (av as any) * (bv as any);
}, },
div: (a: NixValue, b: NixValue): bigint | number => { div: (a: NixValue, b: NixValue): bigint | number => {
const [av, bv] = coerce_numeric(force_numeric(a), force_numeric(b)); const [av, bv] = coerceNumeric(forceNumeric(a), forceNumeric(b));
if (bv === 0 || bv === 0n) { if (bv === 0 || bv === 0n) {
throw new RangeError("Division by zero"); throw new RangeError("Division by zero");
@@ -54,22 +54,22 @@ export const op = {
}, },
lt: (a: NixValue, b: NixValue): boolean => { lt: (a: NixValue, b: NixValue): boolean => {
// FIXME: Non-numeric // FIXME: Non-numeric
const [av, bv] = coerce_numeric(force_numeric(a), force_numeric(b)); const [av, bv] = coerceNumeric(forceNumeric(a), forceNumeric(b));
return (av as any) < (bv as any); return (av as any) < (bv as any);
}, },
lte: (a: NixValue, b: NixValue): boolean => { lte: (a: NixValue, b: NixValue): boolean => {
// FIXME: Non-numeric // FIXME: Non-numeric
const [av, bv] = coerce_numeric(force_numeric(a), force_numeric(b)); const [av, bv] = coerceNumeric(forceNumeric(a), forceNumeric(b));
return (av as any) <= (bv as any); return (av as any) <= (bv as any);
}, },
gt: (a: NixValue, b: NixValue): boolean => { gt: (a: NixValue, b: NixValue): boolean => {
// FIXME: Non-numeric // FIXME: Non-numeric
const [av, bv] = coerce_numeric(force_numeric(a), force_numeric(b)); const [av, bv] = coerceNumeric(forceNumeric(a), forceNumeric(b));
return (av as any) > (bv as any); return (av as any) > (bv as any);
}, },
gte: (a: NixValue, b: NixValue): boolean => { gte: (a: NixValue, b: NixValue): boolean => {
// FIXME: Non-numeric // FIXME: Non-numeric
const [av, bv] = coerce_numeric(force_numeric(a), force_numeric(b)); const [av, bv] = coerceNumeric(forceNumeric(a), forceNumeric(b));
return (av as any) >= (bv as any); return (av as any) >= (bv as any);
}, },
@@ -81,11 +81,11 @@ export const op = {
// List concatenation // List concatenation
concat: (a: NixValue, b: NixValue): NixList => { concat: (a: NixValue, b: NixValue): NixList => {
return Array.prototype.concat.call(force_list(a), force_list(b)); return Array.prototype.concat.call(forceList(a), forceList(b));
}, },
// Attribute set update (merge) // Attribute set update (merge)
update: (a: NixValue, b: NixValue): NixAttrs => { update: (a: NixValue, b: NixValue): NixAttrs => {
return { ...force_attrs(a), ...force_attrs(b) }; return { ...forceAttrs(a), ...forceAttrs(b) };
}, },
}; };

6
nix-js/runtime-ts/src/thunk.ts
View File

@@ -34,7 +34,7 @@ export class NixThunk implements NixThunkInterface {
* @param value - Value to check * @param value - Value to check
* @returns true if value is a NixThunk * @returns true if value is a NixThunk
*/ */
export const is_thunk = (value: unknown): value is NixThunkInterface => { export const isThunk = (value: unknown): value is NixThunkInterface => {
return value !== null && typeof value === "object" && IS_THUNK in value && value[IS_THUNK] === true; return value !== null && typeof value === "object" && IS_THUNK in value && value[IS_THUNK] === true;
}; };
@@ -47,7 +47,7 @@ export const is_thunk = (value: unknown): value is NixThunkInterface => {
* @returns The forced/evaluated value * @returns The forced/evaluated value
*/ */
export const force = (value: NixValue): NixStrictValue => { export const force = (value: NixValue): NixStrictValue => {
if (!is_thunk(value)) { if (!isThunk(value)) {
return value; return value;
} }
@@ -69,6 +69,6 @@ export const force = (value: NixValue): NixStrictValue => {
* @param func - Function that produces a value when called * @param func - Function that produces a value when called
* @returns A new NixThunk wrapping the function * @returns A new NixThunk wrapping the function
*/ */
export const create_thunk = (func: () => NixValue): NixThunkInterface => { export const createThunk = (func: () => NixValue): NixThunkInterface => {
return new NixThunk(func); return new NixThunk(func);
}; };

19
nix-js/runtime-ts/src/type-assert.ts
View File

@@ -5,7 +5,6 @@
import type { NixValue, NixList, NixAttrs, NixFunction, NixInt, NixFloat, NixNumber } from "./types"; import type { NixValue, NixList, NixAttrs, NixFunction, NixInt, NixFloat, NixNumber } from "./types";
import { force } from "./thunk"; import { force } from "./thunk";
import { isAttrs } from "./builtins/type-check";
const typeName = (value: NixValue): string => { const typeName = (value: NixValue): string => {
const val = force(value); const val = force(value);
@@ -26,7 +25,7 @@ const typeName = (value: NixValue): string => {
* Force a value and assert it's a list * Force a value and assert it's a list
* @throws TypeError if value is not a list after forcing * @throws TypeError if value is not a list after forcing
*/ */
export const force_list = (value: NixValue): NixList => { export const forceList = (value: NixValue): NixList => {
const forced = force(value); const forced = force(value);
if (!Array.isArray(forced)) { if (!Array.isArray(forced)) {
throw new TypeError(`Expected list, got ${typeName(forced)}`); throw new TypeError(`Expected list, got ${typeName(forced)}`);
@@ -38,7 +37,7 @@ export const force_list = (value: NixValue): NixList => {
* Force a value and assert it's a function * Force a value and assert it's a function
* @throws TypeError if value is not a function after forcing * @throws TypeError if value is not a function after forcing
*/ */
export const force_function = (value: NixValue): NixFunction => { export const forceFunction = (value: NixValue): NixFunction => {
const forced = force(value); const forced = force(value);
if (typeof forced !== "function") { if (typeof forced !== "function") {
throw new TypeError(`Expected function, got ${typeName(forced)}`); throw new TypeError(`Expected function, got ${typeName(forced)}`);
@@ -50,7 +49,7 @@ export const force_function = (value: NixValue): NixFunction => {
* Force a value and assert it's an attribute set * Force a value and assert it's an attribute set
* @throws TypeError if value is not an attribute set after forcing * @throws TypeError if value is not an attribute set after forcing
*/ */
export const force_attrs = (value: NixValue): NixAttrs => { export const forceAttrs = (value: NixValue): NixAttrs => {
const forced = force(value); const forced = force(value);
if (typeof forced !== "object" || Array.isArray(forced) || forced === null) { if (typeof forced !== "object" || Array.isArray(forced) || forced === null) {
throw new TypeError(`Expected attribute set, got ${typeName(forced)}`); throw new TypeError(`Expected attribute set, got ${typeName(forced)}`);
@@ -62,7 +61,7 @@ export const force_attrs = (value: NixValue): NixAttrs => {
* Force a value and assert it's a string * Force a value and assert it's a string
* @throws TypeError if value is not a string after forcing * @throws TypeError if value is not a string after forcing
*/ */
export const force_string = (value: NixValue): string => { export const forceString = (value: NixValue): string => {
const forced = force(value); const forced = force(value);
if (typeof forced !== "string") { if (typeof forced !== "string") {
throw new TypeError(`Expected string, got ${typeName(forced)}`); throw new TypeError(`Expected string, got ${typeName(forced)}`);
@@ -74,7 +73,7 @@ export const force_string = (value: NixValue): string => {
* Force a value and assert it's a boolean * Force a value and assert it's a boolean
* @throws TypeError if value is not a boolean after forcing * @throws TypeError if value is not a boolean after forcing
*/ */
export const force_bool = (value: NixValue): boolean => { export const forceBool = (value: NixValue): boolean => {
const forced = force(value); const forced = force(value);
if (typeof forced !== "boolean") { if (typeof forced !== "boolean") {
throw new TypeError(`Expected boolean, got ${typeName(forced)}`); throw new TypeError(`Expected boolean, got ${typeName(forced)}`);
@@ -86,7 +85,7 @@ export const force_bool = (value: NixValue): boolean => {
* Force a value and extract int value * Force a value and extract int value
* @throws TypeError if value is not an int * @throws TypeError if value is not an int
*/ */
export const force_int = (value: NixValue): NixInt => { export const forceInt = (value: NixValue): NixInt => {
const forced = force(value); const forced = force(value);
if (typeof forced === "bigint") { if (typeof forced === "bigint") {
return forced; return forced;
@@ -98,7 +97,7 @@ export const force_int = (value: NixValue): NixInt => {
* Force a value and extract float value * Force a value and extract float value
* @throws TypeError if value is not a float * @throws TypeError if value is not a float
*/ */
export const force_float = (value: NixValue): NixFloat => { export const forceFloat = (value: NixValue): NixFloat => {
const forced = force(value); const forced = force(value);
if (typeof forced === "number") { if (typeof forced === "number") {
return forced; return forced;
@@ -110,7 +109,7 @@ export const force_float = (value: NixValue): NixFloat => {
* Force a value and extract numeric value (int or float) * Force a value and extract numeric value (int or float)
* @throws TypeError if value is not a numeric type * @throws TypeError if value is not a numeric type
*/ */
export const force_numeric = (value: NixValue): NixNumber => { export const forceNumeric = (value: NixValue): NixNumber => {
const forced = force(value); const forced = force(value);
if (typeof forced === "bigint" || typeof forced === "number") { if (typeof forced === "bigint" || typeof forced === "number") {
return forced; return forced;
@@ -123,7 +122,7 @@ export const force_numeric = (value: NixValue): NixNumber => {
* Rule: If either is float, convert both to float; otherwise keep as bigint * Rule: If either is float, convert both to float; otherwise keep as bigint
* @returns [a, b] tuple of coerced values * @returns [a, b] tuple of coerced values
*/ */
export const coerce_numeric = (a: NixNumber, b: NixNumber): [NixFloat, NixFloat] | [NixInt, NixInt] => { export const coerceNumeric = (a: NixNumber, b: NixNumber): [NixFloat, NixFloat] | [NixInt, NixInt] => {
const aIsInt = typeof a === "bigint"; const aIsInt = typeof a === "bigint";
const bIsInt = typeof b === "bigint"; const bIsInt = typeof b === "bigint";

8
nix-js/runtime-ts/src/types.ts
View File

@@ -15,7 +15,7 @@ export type NixNull = null;
// Nix composite types // Nix composite types
export type NixList = NixValue[]; export type NixList = NixValue[];
export type NixAttrs = { [key: string]: NixValue }; export type NixAttrs = { [key: string]: NixValue };
export type NixFunction = (...args: any[]) => any; export type NixFunction = (arg: NixValue) => NixValue;
/** /**
* Interface for lazy thunk values * Interface for lazy thunk values
@@ -42,11 +42,7 @@ export type NixStrictValue = Exclude<NixValue, NixThunkInterface>;
* CatchableError: Error type thrown by `builtins.throw` * CatchableError: Error type thrown by `builtins.throw`
* This can be caught by `builtins.tryEval` * This can be caught by `builtins.tryEval`
*/ */
export class CatchableError extends Error { export class CatchableError extends Error {}
constructor(msg: string) {
super(msg);
}
}
// Operator function signatures // Operator function signatures
export type BinaryOp<T = NixValue, U = NixValue, R = NixValue> = (a: T, b: U) => R; export type BinaryOp<T = NixValue, U = NixValue, R = NixValue> = (a: T, b: U) => R;

63
nix-js/src/codegen.rs
View File

@@ -36,7 +36,7 @@ impl<Ctx: CodegenContext> Compile<Ctx> for Ir {
Ir::Path(p) => { Ir::Path(p) => {
// Path needs runtime resolution for interpolated paths // Path needs runtime resolution for interpolated paths
let path_expr = ctx.get_ir(p.expr).compile(ctx); let path_expr = ctx.get_ir(p.expr).compile(ctx);
format!("Nix.resolve_path({})", path_expr) format!("Nix.resolvePath({})", path_expr)
} }
&Ir::If(If { cond, consq, alter }) => { &Ir::If(If { cond, consq, alter }) => {
let cond = ctx.get_ir(cond).compile(ctx); let cond = ctx.get_ir(cond).compile(ctx);
@@ -59,7 +59,7 @@ impl<Ctx: CodegenContext> Compile<Ctx> for Ir {
Ir::Select(x) => x.compile(ctx), Ir::Select(x) => x.compile(ctx),
&Ir::Thunk(expr_id) => { &Ir::Thunk(expr_id) => {
let inner = ctx.get_ir(expr_id).compile(ctx); let inner = ctx.get_ir(expr_id).compile(ctx);
format!("Nix.create_thunk(()=>({}))", inner) format!("Nix.createThunk(()=>({}))", inner)
} }
&Ir::ExprRef(expr_id) => { &Ir::ExprRef(expr_id) => {
format!("expr{}", expr_id.0) format!("expr{}", expr_id.0)
@@ -166,36 +166,40 @@ impl Func {
"null".to_string() "null".to_string()
}; };
// Call Nix.validate_params and store the result // Call Nix.validateParams and store the result
format!("Nix.validate_params(arg{},{},{});", id, required, allowed) format!("Nix.validateParams(arg{},{},{});", id, required, allowed)
} }
} }
impl<Ctx: CodegenContext> Compile<Ctx> for Let { impl<Ctx: CodegenContext> Compile<Ctx> for Let {
fn compile(&self, ctx: &Ctx) -> String { fn compile(&self, ctx: &Ctx) -> String {
let declarations: Vec<String> = self let info = &self.binding_sccs;
.bindings let mut js_statements = Vec::new();
.iter()
.map(|&expr| format!("let expr{}", expr.0))
.collect();
let assignments: Vec<String> = self for (scc_exprs, is_recursive) in info.sccs.iter() {
.bindings if *is_recursive {
.iter() for &expr in scc_exprs {
.map(|&expr| { js_statements.push(format!("let expr{}", expr.0));
}
for &expr in scc_exprs {
let value = ctx.get_ir(expr).compile(ctx); let value = ctx.get_ir(expr).compile(ctx);
format!("expr{}={}", expr.0, value) js_statements.push(format!("expr{}={}", expr.0, value));
}) }
.collect(); } else {
for &expr in scc_exprs {
let ir = ctx.get_ir(expr);
let value = if let Ir::Thunk(inner) = ir {
ctx.get_ir(*inner).compile(ctx)
} else {
ir.compile(ctx)
};
js_statements.push(format!("let expr{}={}", expr.0, value));
}
}
}
let body = ctx.get_ir(self.body).compile(ctx); let body = ctx.get_ir(self.body).compile(ctx);
format!("(()=>{{{}; return {}}})()", js_statements.join(";"), body)
format!(
"(()=>{{{}; {}; return {}}})()",
declarations.join(";"),
assignments.join(";"),
body
)
} }
} }
@@ -216,7 +220,7 @@ impl<Ctx: CodegenContext> Compile<Ctx> for Select {
{ {
let default_val = ctx.get_ir(default).compile(ctx); let default_val = ctx.get_ir(default).compile(ctx);
format!( format!(
"Nix.select_with_default({}, \"{}\", {})", "Nix.selectWithDefault({}, \"{}\", {})",
result, key, default_val result, key, default_val
) )
} else { } else {
@@ -230,7 +234,7 @@ impl<Ctx: CodegenContext> Compile<Ctx> for Select {
{ {
let default_val = ctx.get_ir(default).compile(ctx); let default_val = ctx.get_ir(default).compile(ctx);
format!( format!(
"Nix.select_with_default({}, {}, {})", "Nix.selectWithDefault({}, {}, {})",
result, key, default_val result, key, default_val
) )
} else { } else {
@@ -284,8 +288,11 @@ impl<Ctx: CodegenContext> Compile<Ctx> for ConcatStrings {
.iter() .iter()
.map(|part| { .map(|part| {
let compiled = ctx.get_ir(*part).compile(ctx); let compiled = ctx.get_ir(*part).compile(ctx);
// TODO: coerce to string // TODO: copyToStore
format!("String(Nix.force({}))", compiled) format!(
"Nix.coerceToString({}, Nix.StringCoercionMode.Interpolation, false)",
compiled
)
}) })
.collect(); .collect();
@@ -307,6 +314,6 @@ impl<Ctx: CodegenContext> Compile<Ctx> for HasAttr {
Attr::Dynamic(expr_id) => ctx.get_ir(*expr_id).compile(ctx), Attr::Dynamic(expr_id) => ctx.get_ir(*expr_id).compile(ctx),
}) })
.join(","); .join(",");
format!("Nix.has_attr({lhs}, [{attrpath}])") format!("Nix.hasAttr({lhs}, [{attrpath}])")
} }
} }

847
nix-js/src/context.rs
View File

@@ -1,5 +1,4 @@
use std::path::PathBuf; use std::path::PathBuf;
use std::pin::Pin;
use std::ptr::NonNull; use std::ptr::NonNull;
use hashbrown::HashMap; use hashbrown::HashMap;
@@ -9,109 +8,97 @@ use string_interner::DefaultStringInterner;
use crate::codegen::{CodegenContext, Compile}; use crate::codegen::{CodegenContext, Compile};
use crate::error::{Error, Result}; use crate::error::{Error, Result};
use crate::ir::{Builtin, DowngradeContext, ExprId, Ir, SymId}; use crate::ir::{Builtin, DowngradeContext, ExprId, Ir, SymId};
use crate::runtime::Runtime; use crate::runtime::{Runtime, RuntimeCtx};
use crate::value::Value; use crate::value::Value;
use downgrade::DowngradeCtx; use downgrade::DowngradeCtx;
use drop_guard::{PathDropGuard, PathStackProvider};
mod downgrade; mod downgrade;
mod drop_guard;
pub struct Context { mod private {
ctx: Pin<Box<Ctx>>, use super::*;
runtime: Runtime, use std::ops::DerefMut;
} use std::ptr::NonNull;
pub(crate) struct CtxPtr(NonNull<Ctx>); pub struct CtxPtr(NonNull<Ctx>);
impl CtxPtr { impl CtxPtr {
pub(crate) unsafe fn as_ref(&self) -> &Ctx { pub fn new(ctx: &mut Ctx) -> Self {
unsafe { CtxPtr(NonNull::new_unchecked(ctx)) }
}
fn as_ref(&self) -> &Ctx {
// SAFETY: This is safe since inner `NonNull<Ctx>` is obtained from `&mut Ctx`
unsafe { self.0.as_ref() } unsafe { self.0.as_ref() }
} }
pub(crate) unsafe fn as_mut(&mut self) -> Pin<&mut Ctx> { fn as_mut(&mut self) -> &mut Ctx {
unsafe { Pin::new_unchecked(self.0.as_mut()) } // SAFETY: This is safe since inner `NonNull<Ctx>` is obtained from `&mut Ctx`
unsafe { self.0.as_mut() }
} }
} }
impl PathStackProvider for CtxPtr {
fn path_stack(&mut self) -> &mut Vec<PathBuf> {
&mut self.as_mut().path_stack
}
}
impl RuntimeCtx for CtxPtr {
fn get_current_dir(&self) -> PathBuf {
self.as_ref().get_current_dir()
}
fn push_path_stack(&mut self, path: PathBuf) -> impl DerefMut<Target = Self> {
PathDropGuard::new(path, self)
}
fn compile_code(&mut self, expr: &str) -> Result<String> {
self.as_mut().compile_code(expr)
}
}
}
use private::CtxPtr;
#[derive(Debug)]
pub struct SccInfo {
/// list of SCCs (exprs, recursive)
pub sccs: Vec<(Vec<ExprId>, bool)>,
}
pub struct Context {
ctx: Ctx,
runtime: Runtime<CtxPtr>,
}
impl Context { impl Context {
pub fn new() -> Result<Self> { pub fn new() -> Result<Self> {
let mut ctx = Box::pin(Ctx::new()); let ctx = Ctx::new();
let ptr = unsafe { CtxPtr(NonNull::new_unchecked(Pin::get_unchecked_mut(ctx.as_mut()))) }; let runtime = Runtime::new()?;
let runtime = Runtime::new(ptr)?;
Ok(Self { ctx, runtime }) Ok(Self { ctx, runtime })
} }
pub fn eval_code(&mut self, expr: &str) -> Result<Value> { pub fn eval_code(&mut self, expr: &str) -> Result<Value> {
// Initialize `path_stack` with current directory for relative path resolution // Initialize `path_stack` with current directory for relative path resolution
let mut guard = PathDropGuard::new_cwd(self.ctx.as_mut())?; let mut guard = PathDropGuard::new_cwd(&mut self.ctx)?;
let ctx = guard.as_ctx(); let ctx = guard.as_ctx();
let root = rnix::Root::parse(expr); let code = ctx.compile_code(expr)?;
if !root.errors().is_empty() { self.runtime.eval(code, CtxPtr::new(&mut self.ctx))
return Err(Error::parse_error(root.errors().iter().join("; ")));
} }
#[allow(clippy::unwrap_used)] pub fn compile_code(&mut self, expr: &str) -> Result<String> {
// Always `Some` since there is no parse error self.ctx.compile_code(expr)
let root = ctx
.as_mut()
.downgrade_ctx()
.downgrade(root.tree().expr().unwrap())?;
let code = ctx.get_ir(root).compile(Pin::get_ref(ctx.as_ref()));
let code = format!("Nix.force({})", code);
println!("[DEBUG] generated code: {}", &code);
self.runtime.eval(code)
} }
#[allow(dead_code)] #[allow(dead_code)]
pub(crate) fn eval_js(&mut self, code: String) -> Result<Value> { pub(crate) fn eval_js(&mut self, code: String) -> Result<Value> {
self.runtime.eval(code) self.runtime.eval(code, CtxPtr::new(&mut self.ctx))
} }
} }
#[pin_project::pin_project(PinnedDrop)]
pub(crate) struct Ctx { pub(crate) struct Ctx {
irs: Vec<Ir>, irs: Vec<Ir>,
symbols: DefaultStringInterner, symbols: DefaultStringInterner,
global: NonNull<HashMap<SymId, ExprId>>, global: NonNull<HashMap<SymId, ExprId>>,
path_stack: Vec<PathBuf>, path_stack: Vec<PathBuf>,
#[pin]
_marker: std::marker::PhantomPinned,
}
#[pin_project::pinned_drop]
impl PinnedDrop for Ctx {
fn drop(self: Pin<&mut Self>) {
unsafe {
drop(Box::from_raw(self.global.as_ptr()));
}
}
}
pub(crate) struct PathDropGuard<'ctx> {
ctx: Pin<&'ctx mut Ctx>,
}
impl<'ctx> PathDropGuard<'ctx> {
pub(crate) fn new(path: PathBuf, mut ctx: Pin<&'ctx mut Ctx>) -> Self {
ctx.as_mut().project().path_stack.push(path);
Self { ctx }
}
pub(crate) fn new_cwd(mut ctx: Pin<&'ctx mut Ctx>) -> Result<Self> {
let cwd = std::env::current_dir()
.map_err(|err| Error::downgrade_error(format!("cannot get cwd: {err}")))?;
let virtual_file = cwd.join("__eval__.nix");
ctx.as_mut().project().path_stack.push(virtual_file);
Ok(Self { ctx })
}
pub(crate) fn as_ctx<'a>(&'a mut self) -> &'a mut Pin<&'ctx mut Ctx> {
&mut self.ctx
}
}
impl Drop for PathDropGuard<'_> {
fn drop(&mut self) {
self.ctx.as_mut().project().path_stack.pop();
}
} }
impl Default for Ctx { impl Default for Ctx {
@@ -165,7 +152,6 @@ impl Default for Ctx {
irs, irs,
global: unsafe { NonNull::new_unchecked(Box::leak(Box::new(global))) }, global: unsafe { NonNull::new_unchecked(Box::leak(Box::new(global))) },
path_stack: Vec::new(), path_stack: Vec::new(),
_marker: std::marker::PhantomPinned,
} }
} }
} }
@@ -175,7 +161,7 @@ impl Ctx {
Self::default() Self::default()
} }
pub(crate) fn downgrade_ctx<'a>(self: Pin<&'a mut Self>) -> DowngradeCtx<'a> { pub(crate) fn downgrade_ctx<'a>(&'a mut self) -> DowngradeCtx<'a> {
let global_ref = unsafe { self.global.as_ref() }; let global_ref = unsafe { self.global.as_ref() };
DowngradeCtx::new(self, global_ref) DowngradeCtx::new(self, global_ref)
} }
@@ -190,6 +176,24 @@ impl Ctx {
.expect("path in path_stack should always have a parent dir. this is a bug") .expect("path in path_stack should always have a parent dir. this is a bug")
.to_path_buf() .to_path_buf()
} }
fn compile_code(&mut self, expr: &str) -> Result<String> {
let root = rnix::Root::parse(expr);
if !root.errors().is_empty() {
return Err(Error::parse_error(root.errors().iter().join("; ")));
}
#[allow(clippy::unwrap_used)]
// Always `Some` since there is no parse error
let root = self
.downgrade_ctx()
.downgrade(root.tree().expr().unwrap())?;
let code = self.get_ir(root).compile(self);
let code = format!("Nix.force({})", code);
#[cfg(debug_assertions)]
eprintln!("[DEBUG] generated code: {}", &code);
Ok(code)
}
} }
impl CodegenContext for Ctx { impl CodegenContext for Ctx {
@@ -202,707 +206,8 @@ impl CodegenContext for Ctx {
} }
} }
#[cfg(test)] impl PathStackProvider for Ctx {
#[allow(clippy::unwrap_used)] fn path_stack(&mut self) -> &mut Vec<PathBuf> {
mod test { &mut self.path_stack
use std::collections::BTreeMap;
use super::*;
use crate::value::{AttrSet, List, Symbol};
#[test]
fn basic_eval() {
assert_eq!(
Context::new().unwrap().eval_code("1 + 1").unwrap(),
Value::Int(2)
);
assert_eq!(
Context::new().unwrap().eval_code("(x: x) 1").unwrap(),
Value::Int(1)
);
assert_eq!(
Context::new()
.unwrap()
.eval_code("(x: y: x - y) 2 1")
.unwrap(),
Value::Int(1)
);
assert_eq!(
Context::new()
.unwrap()
.eval_code("rec { b = a; a = 1; }.b")
.unwrap(),
Value::Int(1)
);
assert_eq!(
Context::new()
.unwrap()
.eval_code("let b = a; a = 1; in b")
.unwrap(),
Value::Int(1)
);
assert_eq!(
Context::new().unwrap().eval_code("let fib = n: if n == 1 || n == 2 then 1 else (fib (n - 1)) + (fib (n - 2)); in fib 30").unwrap(),
Value::Int(832040)
);
assert_eq!(
Context::new()
.unwrap()
.eval_code("((f: let x = f x; in x)(self: { x = 1; y = self.x + 1; })).y")
.unwrap(),
Value::Int(2)
);
}
#[test]
fn test_binop() {
let tests = [
("1 + 1", Value::Int(2)),
("2 - 1", Value::Int(1)),
("1. * 1", Value::Float(1.)),
("1 / 1.", Value::Float(1.)),
("1 == 1", Value::Bool(true)),
("1 != 1", Value::Bool(false)),
("2 < 1", Value::Bool(false)),
("2 > 1", Value::Bool(true)),
("1 <= 1", Value::Bool(true)),
("1 >= 1", Value::Bool(true)),
// Short-circuit evaluation: true || <expr> should not evaluate <expr>
("true || (1 / 0)", Value::Bool(true)),
("true && 1 == 0", Value::Bool(false)),
(
"[ 1 2 3 ] ++ [ 4 5 6 ]",
Value::List(List::new((1..=6).map(Value::Int).collect())),
),
(
"{ a.b = 1; b = 2; } // { a.c = 2; }",
Value::AttrSet(AttrSet::new(BTreeMap::from([
(
Symbol::from("a"),
Value::AttrSet(AttrSet::new(BTreeMap::from([(
Symbol::from("c"),
Value::Int(2),
)]))),
),
(Symbol::from("b"), Value::Int(2)),
]))),
),
];
for (expr, expected) in tests {
assert_eq!(Context::new().unwrap().eval_code(expr).unwrap(), expected);
}
}
#[test]
fn test_param_check_required() {
// Test function with required parameters
assert_eq!(
Context::new()
.unwrap()
.eval_code("({ a, b }: a + b) { a = 1; b = 2; }")
.unwrap(),
Value::Int(3)
);
// Test missing required parameter should fail
let result = Context::new()
.unwrap()
.eval_code("({ a, b }: a + b) { a = 1; }");
assert!(result.is_err());
// Test all required parameters present
assert_eq!(
Context::new()
.unwrap()
.eval_code("({ x, y, z }: x + y + z) { x = 1; y = 2; z = 3; }")
.unwrap(),
Value::Int(6)
);
}
#[test]
fn test_param_check_allowed() {
// Test function without ellipsis - should reject unexpected arguments
let result = Context::new()
.unwrap()
.eval_code("({ a, b }: a + b) { a = 1; b = 2; c = 3; }");
assert!(result.is_err());
// Test function with ellipsis - should accept extra arguments
assert_eq!(
Context::new()
.unwrap()
.eval_code("({ a, b, ... }: a + b) { a = 1; b = 2; c = 3; }")
.unwrap(),
Value::Int(3)
);
}
#[test]
fn test_param_check_with_default() {
// Test function with default parameters
assert_eq!(
Context::new()
.unwrap()
.eval_code("({ a, b ? 5 }: a + b) { a = 1; }")
.unwrap(),
Value::Int(6)
);
// Test overriding default parameter
assert_eq!(
Context::new()
.unwrap()
.eval_code("({ a, b ? 5 }: a + b) { a = 1; b = 10; }")
.unwrap(),
Value::Int(11)
);
}
#[test]
fn test_param_check_with_alias() {
// Test function with @ pattern (alias)
assert_eq!(
Context::new()
.unwrap()
.eval_code("(args@{ a, b }: args.a + args.b) { a = 1; b = 2; }")
.unwrap(),
Value::Int(3)
);
}
#[test]
fn test_simple_param_no_check() {
// Test simple parameter (no pattern) should not have validation
assert_eq!(
Context::new()
.unwrap()
.eval_code("(x: x.a + x.b) { a = 1; b = 2; }")
.unwrap(),
Value::Int(3)
);
// Simple parameter accepts any argument
assert_eq!(
Context::new().unwrap().eval_code("(x: x) 42").unwrap(),
Value::Int(42)
);
}
#[test]
fn test_builtins_basic_access() {
// Test that builtins identifier is accessible
let result = Context::new().unwrap().eval_code("builtins").unwrap();
// Should return an AttrSet with builtin functions
assert!(matches!(result, Value::AttrSet(_)));
}
#[test]
fn test_builtins_self_reference() {
// Test builtins.builtins (self-reference as thunk)
let result = Context::new()
.unwrap()
.eval_code("builtins.builtins")
.unwrap();
assert!(matches!(result, Value::AttrSet(_)));
}
#[test]
fn test_builtin_function_add() {
// Test calling builtin function: builtins.add 1 2
assert_eq!(
Context::new()
.unwrap()
.eval_code("builtins.add 1 2")
.unwrap(),
Value::Int(3)
);
}
#[test]
fn test_builtin_function_length() {
// Test builtin with list: builtins.length [1 2 3]
assert_eq!(
Context::new()
.unwrap()
.eval_code("builtins.length [1 2 3]")
.unwrap(),
Value::Int(3)
);
}
#[test]
fn test_builtin_function_map() {
// Test higher-order builtin: map (x: x * 2) [1 2 3]
assert_eq!(
Context::new()
.unwrap()
.eval_code("map (x: x * 2) [1 2 3]")
.unwrap(),
Value::List(List::new(
vec![Value::Int(2), Value::Int(4), Value::Int(6),]
))
);
}
#[test]
fn test_builtin_function_filter() {
// Test predicate builtin: builtins.filter (x: x > 1) [1 2 3]
assert_eq!(
Context::new()
.unwrap()
.eval_code("builtins.filter (x: x > 1) [1 2 3]")
.unwrap(),
Value::List(List::new(vec![Value::Int(2), Value::Int(3),]))
);
}
#[test]
fn test_builtin_function_attrnames() {
// Test builtins.attrNames { a = 1; b = 2; }
let result = Context::new()
.unwrap()
.eval_code("builtins.attrNames { a = 1; b = 2; }")
.unwrap();
// Should return a list of attribute names
assert!(matches!(result, Value::List(_)));
if let Value::List(list) = result {
// List should contain 2 elements
assert_eq!(format!("{:?}", list).matches(',').count() + 1, 2);
}
}
#[test]
fn test_builtin_function_head() {
// Test builtins.head [1 2 3]
assert_eq!(
Context::new()
.unwrap()
.eval_code("builtins.head [1 2 3]")
.unwrap(),
Value::Int(1)
);
}
#[test]
fn test_builtin_function_tail() {
// Test builtins.tail [1 2 3]
assert_eq!(
Context::new()
.unwrap()
.eval_code("builtins.tail [1 2 3]")
.unwrap(),
Value::List(List::new(vec![Value::Int(2), Value::Int(3),]))
);
}
#[test]
fn test_builtin_in_let() {
// Test builtins in let binding
assert_eq!(
Context::new()
.unwrap()
.eval_code("let b = builtins; in b.add 5 3")
.unwrap(),
Value::Int(8)
);
}
#[test]
fn test_builtin_in_with() {
// Test builtins with 'with' expression
assert_eq!(
Context::new()
.unwrap()
.eval_code("with builtins; add 10 20")
.unwrap(),
Value::Int(30)
);
}
#[test]
fn test_builtin_nested_access() {
// Test nested function calls with builtins
assert_eq!(
Context::new()
.unwrap()
.eval_code("builtins.add (builtins.mul 2 3) (builtins.sub 10 5)")
.unwrap(),
Value::Int(11) // (2*3) + (10-5 = 6 + 5 = 11
);
}
#[test]
fn test_builtin_type_checks() {
// Test type checking functions
assert_eq!(
Context::new()
.unwrap()
.eval_code("builtins.isList [1 2 3]")
.unwrap(),
Value::Bool(true)
);
assert_eq!(
Context::new()
.unwrap()
.eval_code("builtins.isAttrs { a = 1; }")
.unwrap(),
Value::Bool(true)
);
assert_eq!(
Context::new()
.unwrap()
.eval_code("builtins.isFunction (x: x)")
.unwrap(),
Value::Bool(true)
);
assert_eq!(
Context::new()
.unwrap()
.eval_code("builtins.isNull null")
.unwrap(),
Value::Bool(true)
);
assert_eq!(
Context::new()
.unwrap()
.eval_code("builtins.isBool true")
.unwrap(),
Value::Bool(true)
);
}
#[test]
fn test_builtin_shadowing() {
// Test that user can shadow builtins (Nix allows this)
assert_eq!(
Context::new()
.unwrap()
.eval_code("let builtins = { add = x: y: x - y; }; in builtins.add 5 3")
.unwrap(),
Value::Int(2) // Uses shadowed version
);
}
#[test]
fn test_builtin_lazy_evaluation() {
// Test that builtins.builtins is lazy (thunk)
// This should not cause infinite recursion
let result = Context::new()
.unwrap()
.eval_code("builtins.builtins.builtins.add 1 1")
.unwrap();
assert_eq!(result, Value::Int(2));
}
// Free globals tests
#[test]
fn test_free_global_true() {
assert_eq!(
Context::new().unwrap().eval_code("true").unwrap(),
Value::Bool(true)
);
}
#[test]
fn test_free_global_false() {
assert_eq!(
Context::new().unwrap().eval_code("false").unwrap(),
Value::Bool(false)
);
}
#[test]
fn test_free_global_null() {
assert_eq!(
Context::new().unwrap().eval_code("null").unwrap(),
Value::Null
);
}
#[test]
fn test_free_global_map() {
// Test free global function: map (x: x * 2) [1 2 3]
assert_eq!(
Context::new()
.unwrap()
.eval_code("map (x: x * 2) [1 2 3]")
.unwrap(),
Value::List(List::new(
vec![Value::Int(2), Value::Int(4), Value::Int(6),]
))
);
}
#[test]
fn test_free_global_isnull() {
// Test isNull function
assert_eq!(
Context::new().unwrap().eval_code("isNull null").unwrap(),
Value::Bool(true)
);
assert_eq!(
Context::new().unwrap().eval_code("isNull 5").unwrap(),
Value::Bool(false)
);
}
#[test]
fn test_free_global_shadowing() {
// Test shadowing of free globals
assert_eq!(
Context::new()
.unwrap()
.eval_code("let true = false; in true")
.unwrap(),
Value::Bool(false)
);
assert_eq!(
Context::new()
.unwrap()
.eval_code("let map = x: y: x; in map 1 2")
.unwrap(),
Value::Int(1)
);
}
#[test]
fn test_free_global_mixed_usage() {
// Test mixing free globals in expressions
assert_eq!(
Context::new()
.unwrap()
.eval_code("if true then map (x: x + 1) [1 2] else []")
.unwrap(),
Value::List(List::new(vec![Value::Int(2), Value::Int(3),]))
);
}
#[test]
fn test_free_global_in_let() {
// Test free globals in let bindings
assert_eq!(
Context::new()
.unwrap()
.eval_code("let x = true; y = false; in x && y")
.unwrap(),
Value::Bool(false)
);
}
// BigInt and numeric type tests
#[test]
fn test_bigint_precision() {
let mut ctx = Context::new().unwrap();
// Test large i64 values
assert_eq!(
ctx.eval_code("9223372036854775807").unwrap(),
Value::Int(9223372036854775807)
);
// Test negative large value
// Can't use -9223372036854775808 since unary minus is actually desugared to (0 - <expr>)
assert_eq!(
ctx.eval_code("-9223372036854775807").unwrap(),
Value::Int(-9223372036854775807)
);
// Test large number arithmetic
assert_eq!(
ctx.eval_code("5000000000000000000 + 3000000000000000000")
.unwrap(),
Value::Int(8000000000000000000i64)
);
}
#[test]
fn test_int_float_distinction() {
let mut ctx = Context::new().unwrap();
// isInt tests
assert_eq!(
ctx.eval_code("builtins.isInt 42").unwrap(),
Value::Bool(true)
);
assert_eq!(
ctx.eval_code("builtins.isInt 42.0").unwrap(),
Value::Bool(false)
);
// isFloat tests
assert_eq!(
ctx.eval_code("builtins.isFloat 42").unwrap(),
Value::Bool(false)
);
assert_eq!(
ctx.eval_code("builtins.isFloat 42.5").unwrap(),
Value::Bool(true)
);
assert_eq!(
ctx.eval_code("builtins.isFloat 1.0").unwrap(),
Value::Bool(true)
);
// typeOf tests
assert_eq!(
ctx.eval_code("builtins.typeOf 1").unwrap(),
Value::String("int".to_string())
);
assert_eq!(
ctx.eval_code("builtins.typeOf 1.0").unwrap(),
Value::String("float".to_string())
);
assert_eq!(
ctx.eval_code("builtins.typeOf 3.14").unwrap(),
Value::String("float".to_string())
);
// literal tests
assert_eq!(ctx.eval_code("1").unwrap(), Value::Int(1));
assert_eq!(ctx.eval_code("1.").unwrap(), Value::Float(1.))
}
#[test]
fn test_arithmetic_type_preservation() {
let mut ctx = Context::new().unwrap();
// int + int = int
assert_eq!(
ctx.eval_code("builtins.typeOf (1 + 2)").unwrap(),
Value::String("int".to_string())
);
// int + float = float
assert_eq!(
ctx.eval_code("builtins.typeOf (1 + 2.0)").unwrap(),
Value::String("float".to_string())
);
// int * int = int
assert_eq!(
ctx.eval_code("builtins.typeOf (3 * 4)").unwrap(),
Value::String("int".to_string())
);
// int * float = float
assert_eq!(
ctx.eval_code("builtins.typeOf (3 * 4.0)").unwrap(),
Value::String("float".to_string())
);
}
#[test]
fn test_integer_division() {
let mut ctx = Context::new().unwrap();
assert_eq!(ctx.eval_code("5 / 2").unwrap(), Value::Int(2));
assert_eq!(ctx.eval_code("7 / 3").unwrap(), Value::Int(2));
assert_eq!(ctx.eval_code("10 / 3").unwrap(), Value::Int(3));
// Float division returns float
assert_eq!(ctx.eval_code("5 / 2.0").unwrap(), Value::Float(2.5));
assert_eq!(ctx.eval_code("7.0 / 2").unwrap(), Value::Float(3.5));
assert_eq!(ctx.eval_code("(-7) / 3").unwrap(), Value::Int(-2));
}
#[test]
fn test_builtin_arithmetic_with_bigint() {
let mut ctx = Context::new().unwrap();
// Test builtin add with large numbers
assert_eq!(
ctx.eval_code("builtins.add 5000000000000000000 3000000000000000000")
.unwrap(),
Value::Int(8000000000000000000i64)
);
// Test builtin mul with large numbers
assert_eq!(
ctx.eval_code("builtins.mul 1000000000 1000000000").unwrap(),
Value::Int(1000000000000000000i64)
);
}
#[test]
fn test_import_absolute_path() {
let mut ctx = Context::new().unwrap();
let temp_dir = tempfile::tempdir().unwrap();
let lib_path = temp_dir.path().join("nix_test_lib.nix");
std::fs::write(&lib_path, "{ add = a: b: a + b; }").unwrap();
let expr = format!(r#"(import "{}").add 3 5"#, lib_path.display());
assert_eq!(ctx.eval_code(&expr).unwrap(), Value::Int(8));
}
#[test]
fn test_import_nested() {
let mut ctx = Context::new().unwrap();
let temp_dir = tempfile::tempdir().unwrap();
let lib_path = temp_dir.path().join("lib.nix");
std::fs::write(&lib_path, "{ add = a: b: a + b; }").unwrap();
let main_path = temp_dir.path().join("main.nix");
let main_content = format!(
r#"let lib = import {}; in {{ result = lib.add 10 20; }}"#,
lib_path.display()
);
std::fs::write(&main_path, main_content).unwrap();
let expr = format!(r#"(import "{}").result"#, main_path.display());
assert_eq!(ctx.eval_code(&expr).unwrap(), Value::Int(30));
}
#[test]
fn test_import_relative_path() {
let mut ctx = Context::new().unwrap();
let temp_dir = tempfile::tempdir().unwrap();
let subdir = temp_dir.path().join("subdir");
std::fs::create_dir_all(&subdir).unwrap();
let lib_path = temp_dir.path().join("lib.nix");
std::fs::write(&lib_path, "{ multiply = a: b: a * b; }").unwrap();
let helper_path = subdir.join("helper.nix");
std::fs::write(&helper_path, "{ subtract = a: b: a - b; }").unwrap();
let main_path = temp_dir.path().join("main.nix");
let main_content = r#"
let
lib = import ./lib.nix;
helper = import ./subdir/helper.nix;
in {
result1 = lib.multiply 3 4;
result2 = helper.subtract 10 3;
}
"#;
std::fs::write(&main_path, main_content).unwrap();
let expr = format!(r#"let x = import "{}"; in x.result1"#, main_path.display());
assert_eq!(ctx.eval_code(&expr).unwrap(), Value::Int(12));
let expr = format!(r#"let x = import "{}"; in x.result2"#, main_path.display());
assert_eq!(ctx.eval_code(&expr).unwrap(), Value::Int(7));
}
#[test]
fn test_import_returns_function() {
let mut ctx = Context::new().unwrap();
let temp_dir = tempfile::tempdir().unwrap();
let func_path = temp_dir.path().join("nix_test_func.nix");
std::fs::write(&func_path, "x: x * 2").unwrap();
let expr = format!(r#"(import "{}") 5"#, func_path.display());
assert_eq!(ctx.eval_code(&expr).unwrap(), Value::Int(10));
} }
} }

91
nix-js/src/context/downgrade.rs
View File

@@ -1,12 +1,21 @@
use std::pin::Pin;
use hashbrown::HashMap; use hashbrown::HashMap;
use hashbrown::HashSet;
use petgraph::Directed;
use petgraph::Graph;
use petgraph::graph::NodeIndex;
use crate::codegen::CodegenContext; use crate::codegen::CodegenContext;
use crate::error::{Error, Result}; use crate::error::{Error, Result};
use crate::ir::{ArgId, Downgrade, DowngradeContext, ExprId, Ir, SymId, ToIr}; use crate::ir::{ArgId, Downgrade, DowngradeContext, ExprId, Ir, SymId, ToIr};
use super::Ctx; use super::{Ctx, SccInfo};
struct DependencyTracker {
expr_to_node: HashMap<ExprId, NodeIndex>,
graph: Graph<ExprId, (), Directed>,
current_binding: Option<ExprId>,
let_scope_exprs: HashSet<ExprId>,
}
enum Scope<'ctx> { enum Scope<'ctx> {
Global(&'ctx HashMap<SymId, ExprId>), Global(&'ctx HashMap<SymId, ExprId>),
@@ -32,18 +41,20 @@ impl<'a, 'ctx> ScopeGuard<'a, 'ctx> {
} }
pub struct DowngradeCtx<'ctx> { pub struct DowngradeCtx<'ctx> {
ctx: Pin<&'ctx mut Ctx>, ctx: &'ctx mut Ctx,
irs: Vec<Option<Ir>>, irs: Vec<Option<Ir>>,
scopes: Vec<Scope<'ctx>>, scopes: Vec<Scope<'ctx>>,
arg_id: usize, arg_id: usize,
dep_tracker_stack: Vec<DependencyTracker>,
} }
impl<'ctx> DowngradeCtx<'ctx> { impl<'ctx> DowngradeCtx<'ctx> {
pub fn new(ctx: Pin<&'ctx mut Ctx>, global: &'ctx HashMap<SymId, ExprId>) -> Self { pub fn new(ctx: &'ctx mut Ctx, global: &'ctx HashMap<SymId, ExprId>) -> Self {
Self { Self {
scopes: vec![Scope::Global(global)], scopes: vec![Scope::Global(global)],
irs: vec![], irs: vec![],
arg_id: 0, arg_id: 0,
dep_tracker_stack: Vec::new(),
ctx, ctx,
} }
} }
@@ -62,7 +73,7 @@ impl DowngradeContext for DowngradeCtx<'_> {
} }
fn new_sym(&mut self, sym: String) -> SymId { fn new_sym(&mut self, sym: String) -> SymId {
self.ctx.as_mut().project().symbols.get_or_intern(sym) self.ctx.symbols.get_or_intern(sym)
} }
fn get_sym(&self, id: SymId) -> &str { fn get_sym(&self, id: SymId) -> &str {
@@ -79,7 +90,16 @@ impl DowngradeContext for DowngradeCtx<'_> {
} }
Scope::Let(let_scope) => { Scope::Let(let_scope) => {
if let Some(&expr) = let_scope.get(&sym) { if let Some(&expr) = let_scope.get(&sym) {
// Wrap in ExprRef to reference the binding instead of recompiling if let Some(tracker) = self.dep_tracker_stack.last_mut()
&& let Some(current) = tracker.current_binding
&& tracker.let_scope_exprs.contains(&current)
&& tracker.let_scope_exprs.contains(&expr)
{
let from = tracker.expr_to_node[&current];
let to = tracker.expr_to_node[&expr];
tracker.graph.add_edge(from, to, ());
}
return Ok(self.new_expr(Ir::ExprRef(expr))); return Ok(self.new_expr(Ir::ExprRef(expr)));
} }
} }
@@ -144,8 +164,6 @@ impl DowngradeContext for DowngradeCtx<'_> {
fn downgrade(mut self, root: rnix::ast::Expr) -> Result<ExprId> { fn downgrade(mut self, root: rnix::ast::Expr) -> Result<ExprId> {
let root = root.downgrade(&mut self)?; let root = root.downgrade(&mut self)?;
self.ctx self.ctx
.as_mut()
.project()
.irs .irs
.extend(self.irs.into_iter().map(Option::unwrap)); .extend(self.irs.into_iter().map(Option::unwrap));
Ok(root) Ok(root)
@@ -181,4 +199,59 @@ impl DowngradeContext for DowngradeCtx<'_> {
fn get_current_dir(&self) -> std::path::PathBuf { fn get_current_dir(&self) -> std::path::PathBuf {
self.ctx.get_current_dir() self.ctx.get_current_dir()
} }
fn push_dep_tracker(&mut self, slots: &[ExprId]) {
let mut graph = Graph::new();
let mut expr_to_node = HashMap::new();
let mut let_scope_exprs = HashSet::new();
for &expr in slots.iter() {
let node = graph.add_node(expr);
expr_to_node.insert(expr, node);
let_scope_exprs.insert(expr);
}
self.dep_tracker_stack.push(DependencyTracker {
expr_to_node,
graph,
current_binding: None,
let_scope_exprs,
});
}
fn set_current_binding(&mut self, expr: Option<ExprId>) {
if let Some(tracker) = self.dep_tracker_stack.last_mut() {
tracker.current_binding = expr;
}
}
fn pop_dep_tracker(&mut self) -> Result<SccInfo> {
let tracker = self
.dep_tracker_stack
.pop()
.expect("pop_dep_tracker without active tracker");
use petgraph::algo::kosaraju_scc;
let sccs = kosaraju_scc(&tracker.graph);
let mut sccs_topo = Vec::new();
for scc_nodes in sccs.iter() {
let mut scc_exprs = Vec::new();
let mut is_recursive = scc_nodes.len() > 1;
for &node_idx in scc_nodes {
let expr = tracker.graph[node_idx];
scc_exprs.push(expr);
if !is_recursive && tracker.graph.contains_edge(node_idx, node_idx) {
is_recursive = true;
}
}
sccs_topo.push((scc_exprs, is_recursive));
}
Ok(SccInfo { sccs: sccs_topo })
}
} }

41
nix-js/src/context/drop_guard.rs Normal file
View File

@@ -0,0 +1,41 @@
use std::ops::{Deref, DerefMut};
use std::path::PathBuf;
use crate::error::{Error, Result};
pub trait PathStackProvider {
fn path_stack(&mut self) -> &mut Vec<PathBuf>;
}
pub struct PathDropGuard<'ctx, Ctx: PathStackProvider> {
ctx: &'ctx mut Ctx,
}
impl<'ctx, Ctx: PathStackProvider> PathDropGuard<'ctx, Ctx> {
pub fn new(path: PathBuf, ctx: &'ctx mut Ctx) -> Self {
ctx.path_stack().push(path);
Self { ctx }
}
pub fn new_cwd(ctx: &'ctx mut Ctx) -> Result<Self> {
let cwd = std::env::current_dir()
.map_err(|err| Error::downgrade_error(format!("cannot get cwd: {err}")))?;
let virtual_file = cwd.join("__eval__.nix");
ctx.path_stack().push(virtual_file);
Ok(Self { ctx })
}
pub fn as_ctx(&mut self) -> &mut Ctx {
self.ctx
}
}
impl<Ctx: PathStackProvider> Deref for PathDropGuard<'_, Ctx> {
type Target = Ctx;
fn deref(&self) -> &Self::Target {
self.ctx
}
}
impl<Ctx: PathStackProvider> DerefMut for PathDropGuard<'_, Ctx> {
fn deref_mut(&mut self) -> &mut Self::Target {
self.ctx
}
}

9
nix-js/src/ir.rs
View File

@@ -3,6 +3,7 @@ use hashbrown::{HashMap, HashSet};
use rnix::ast; use rnix::ast;
use string_interner::symbol::SymbolU32; use string_interner::symbol::SymbolU32;
use crate::context::SccInfo;
use crate::error::{Error, Result}; use crate::error::{Error, Result};
use crate::value::format_symbol; use crate::value::format_symbol;
use nix_js_macros::ir; use nix_js_macros::ir;
@@ -38,6 +39,10 @@ pub trait DowngradeContext {
F: FnOnce(&mut Self) -> R; F: FnOnce(&mut Self) -> R;
fn get_current_dir(&self) -> std::path::PathBuf; fn get_current_dir(&self) -> std::path::PathBuf;
fn push_dep_tracker(&mut self, slots: &[ExprId]);
fn set_current_binding(&mut self, expr: Option<ExprId>);
fn pop_dep_tracker(&mut self) -> Result<SccInfo>;
} }
ir! { ir! {
@@ -315,8 +320,8 @@ pub struct Func {
/// Represents a `let ... in ...` expression. /// Represents a `let ... in ...` expression.
#[derive(Debug)] #[derive(Debug)]
pub struct Let { pub struct Let {
/// The bindings in the let expression. /// The bindings in the `let` expression, group in SCCs
pub bindings: Vec<ExprId>, pub binding_sccs: SccInfo,
/// The body expression evaluated in the scope of the bindings. /// The body expression evaluated in the scope of the bindings.
pub body: ExprId, pub body: ExprId,
} }

85
nix-js/src/ir/downgrade.rs
View File

@@ -171,7 +171,7 @@ impl<Ctx: DowngradeContext> Downgrade<Ctx> for ast::AttrSet {
// rec { a = 1; b = a; } => let a = 1; b = a; in { inherit a b; } // rec { a = 1; b = a; } => let a = 1; b = a; in { inherit a b; }
let entries: Vec<_> = self.entries().collect(); let entries: Vec<_> = self.entries().collect();
let (bindings, body) = downgrade_let_bindings(entries, ctx, |ctx, binding_keys| { let (binding_sccs, body) = downgrade_let_bindings(entries, ctx, |ctx, binding_keys| {
// Create plain attrset as body with inherit // Create plain attrset as body with inherit
let mut attrs = AttrSet { let mut attrs = AttrSet {
stcs: HashMap::new(), stcs: HashMap::new(),
@@ -186,7 +186,7 @@ impl<Ctx: DowngradeContext> Downgrade<Ctx> for ast::AttrSet {
Ok(ctx.new_expr(attrs.to_ir())) Ok(ctx.new_expr(attrs.to_ir()))
})?; })?;
Ok(ctx.new_expr(Let { bindings, body }.to_ir())) Ok(ctx.new_expr(Let { body, binding_sccs }.to_ir()))
} }
} }
@@ -288,10 +288,10 @@ impl<Ctx: DowngradeContext> Downgrade<Ctx> for ast::LetIn {
let entries: Vec<_> = self.entries().collect(); let entries: Vec<_> = self.entries().collect();
let body_expr = self.body().unwrap(); let body_expr = self.body().unwrap();
let (bindings, body) = let (binding_sccs, body) =
downgrade_let_bindings(entries, ctx, |ctx, _binding_keys| body_expr.downgrade(ctx))?; downgrade_let_bindings(entries, ctx, |ctx, _binding_keys| body_expr.downgrade(ctx))?;
Ok(ctx.new_expr(Let { bindings, body }.to_ir())) Ok(ctx.new_expr(Let { body, binding_sccs }.to_ir()))
} }
} }
@@ -332,76 +332,35 @@ impl<Ctx: DowngradeContext> Downgrade<Ctx> for ast::Lambda {
.with_param_scope(param_sym, arg, |ctx| self.body().unwrap().downgrade(ctx))?; .with_param_scope(param_sym, arg, |ctx| self.body().unwrap().downgrade(ctx))?;
} }
ast::Param::Pattern(pattern) => { ast::Param::Pattern(pattern) => {
// Complex case: `{ a, b ? 2, ... }@args: body`
let alias = pattern let alias = pattern
.pat_bind() .pat_bind()
.map(|alias| ctx.new_sym(alias.ident().unwrap().to_string())); .map(|alias| ctx.new_sym(alias.ident().unwrap().to_string()));
ident = alias; ident = alias;
let entries = pattern let has_ellipsis = pattern.ellipsis_token().is_some();
.pat_entries() let pat_entries = pattern.pat_entries();
.map(|entry| {
let ident = ctx.new_sym(entry.ident().unwrap().to_string());
if entry.default().is_none() {
Ok((ident, None))
} else {
entry
.default()
.unwrap()
.downgrade(ctx)
.map(|ok| (ident, Some(ok)))
}
})
.collect::<Result<Vec<_>>>()?;
required = Some( let PatternBindings {
entries body: inner_body,
.iter() scc_info,
.filter_map(|(k, d)| if d.is_none() { Some(*k) } else { None }) required_params,
.collect(), allowed_params,
); } = downgrade_pattern_bindings(
allowed = if pattern.ellipsis_token().is_some() { pat_entries,
None // `...` means any attribute is allowed. alias,
} else { arg,
Some(entries.iter().map(|(k, _)| *k).collect()) has_ellipsis,
}; ctx,
|ctx, _| self.body().unwrap().downgrade(ctx),
)?;
// Desugar pattern matching in function arguments into a `let` expression. required = Some(required_params);
// For example, `({ a, b ? 2 }): a + b` is desugared into: allowed = allowed_params;
// `arg: let a = arg.a; b = arg.b or 2; in a + b`
let mut bindings: HashMap<_, _> = entries
.into_iter()
.map(|(k, default)| {
// For each formal parameter, create a `Select` expression to extract it from the argument set.
(
k,
ctx.new_expr(
Select {
expr: arg,
attrpath: vec![Attr::Str(k)],
default,
}
.to_ir(),
),
)
})
.collect();
// If there's an alias (`... }@alias`), bind the alias name to the raw argument set.
if let Some(alias) = alias {
bindings.insert(alias, arg);
}
// Downgrade body in Let scope and create Let expression
let bindings_vec: Vec<ExprId> = bindings.values().copied().collect();
let inner_body =
ctx.with_let_scope(bindings, |ctx| self.body().unwrap().downgrade(ctx))?;
// Create Let expression to wrap the bindings
body = ctx.new_expr( body = ctx.new_expr(
Let { Let {
bindings: bindings_vec,
body: inner_body, body: inner_body,
binding_sccs: scc_info,
} }
.to_ir(), .to_ir(),
); );

286
nix-js/src/ir/utils.rs
View File

@@ -219,76 +219,151 @@ pub fn downgrade_static_attrpathvalue(
attrs.insert(path, value, ctx) attrs.insert(path, value, ctx)
} }
/// Helper function to downgrade entries with let bindings semantics. pub struct PatternBindings {
/// This extracts common logic for both `rec` attribute sets and `let...in` expressions. pub body: ExprId,
pub scc_info: SccInfo,
pub required_params: Vec<SymId>,
pub allowed_params: Option<HashSet<SymId>>,
}
/// Helper function for Lambda pattern parameters with SCC analysis.
/// Processes pattern entries like `{ a, b ? 2, ... }@alias` and creates optimized bindings.
/// ///
/// Returns a tuple of (binding slots, body result) where: /// # Parameters
/// - binding slots: pre-allocated expression slots for the bindings /// - `pat_entries`: Iterator over pattern entries from the AST
/// - body result: the result of calling `body_fn` in the let scope /// - `alias`: Optional alias symbol (from @alias syntax)
pub fn downgrade_let_bindings<Ctx, F, R>( /// - `arg`: The argument expression to extract from
entries: Vec<ast::Entry>, ///
/// Returns a tuple of (binding slots, body, SCC info, required params, allowed params)
pub fn downgrade_pattern_bindings<Ctx>(
pat_entries: impl Iterator<Item = ast::PatEntry>,
alias: Option<SymId>,
arg: ExprId,
has_ellipsis: bool,
ctx: &mut Ctx, ctx: &mut Ctx,
body_fn: F, body_fn: impl FnOnce(&mut Ctx, &[SymId]) -> Result<ExprId>,
) -> Result<(Vec<ExprId>, R)> ) -> Result<PatternBindings>
where where
Ctx: DowngradeContext, Ctx: DowngradeContext,
F: FnOnce(&mut Ctx, &[SymId]) -> Result<R>,
{ {
// 1. Collect all top-level binding keys let mut param_syms = Vec::new();
let mut binding_syms = HashSet::new(); let mut param_defaults = Vec::new();
let mut seen_params = HashSet::new();
for entry in &entries { for entry in pat_entries {
match entry { let sym = ctx.new_sym(entry.ident().unwrap().to_string());
ast::Entry::Inherit(inherit) => {
for attr in inherit.attrs() { if !seen_params.insert(sym) {
if let ast::Attr::Ident(ident) = attr { return Err(Error::downgrade_error(format!(
binding_syms.insert(ctx.new_sym(ident.to_string())); "duplicate parameter '{}'",
} format_symbol(ctx.get_sym(sym))
} )));
}
ast::Entry::AttrpathValue(value) => {
let attrpath = value.attrpath().unwrap();
if let Some(first_attr) = attrpath.attrs().next()
&& let ast::Attr::Ident(ident) = first_attr
{
binding_syms.insert(ctx.new_sym(ident.to_string()));
}
}
}
} }
let binding_keys: Vec<_> = binding_syms.into_iter().collect(); let default_ast = entry.default();
param_syms.push(sym);
param_defaults.push(default_ast);
}
// 2. Reserve slots for bindings let mut binding_keys: Vec<SymId> = param_syms.clone();
let slots_iter = ctx.reserve_slots(binding_keys.len()); if let Some(alias_sym) = alias {
let slots_clone = slots_iter.clone(); binding_keys.push(alias_sym);
}
// 3. Create let scope bindings let required: Vec<SymId> = param_syms
let let_bindings: HashMap<_, _> = binding_keys.iter().copied().zip(slots_iter).collect(); .iter()
.zip(param_defaults.iter())
.filter_map(|(&sym, default)| if default.is_none() { Some(sym) } else { None })
.collect();
// 4. Process entries in let scope let allowed: Option<HashSet<SymId>> = if has_ellipsis {
let body = ctx.with_let_scope(let_bindings, |ctx| { None
// Collect all bindings in a temporary AttrSet } else {
let mut temp_attrs = AttrSet { Some(param_syms.iter().copied().collect())
stcs: HashMap::new(),
dyns: Vec::new(),
}; };
for entry in entries { let (scc_info, body) = downgrade_bindings_generic(
match entry { ctx,
ast::Entry::Inherit(inherit) => { binding_keys,
downgrade_inherit(inherit, &mut temp_attrs.stcs, ctx)?; |ctx, sym_to_slot| {
} let mut bindings = HashMap::new();
ast::Entry::AttrpathValue(value) => {
downgrade_static_attrpathvalue(value, &mut temp_attrs, ctx)?; for (sym, default_ast) in param_syms.iter().zip(param_defaults.iter()) {
} let slot = *sym_to_slot.get(sym).unwrap();
ctx.set_current_binding(Some(slot));
let default = if let Some(default_expr) = default_ast {
Some(default_expr.clone().downgrade(ctx)?)
} else {
None
};
let select_expr = ctx.new_expr(
Select {
expr: arg,
attrpath: vec![Attr::Str(*sym)],
default,
} }
.to_ir(),
);
bindings.insert(*sym, select_expr);
ctx.set_current_binding(None);
} }
// Fill pre-allocated slots with top-level bindings if let Some(alias_sym) = alias {
for (sym, slot) in binding_keys.iter().copied().zip(slots_clone.clone()) { bindings.insert(alias_sym, arg);
if let Some(&expr) = temp_attrs.stcs.get(&sym) { }
ctx.replace_expr(slot, Ir::Thunk(expr));
Ok(bindings)
},
body_fn,
)?;
Ok(PatternBindings {
body,
scc_info,
required_params: required,
allowed_params: allowed,
})
}
/// Generic helper function to downgrade bindings with SCC analysis.
/// This is the core logic for let bindings, extracted for reuse.
///
/// # Parameters
/// - `binding_keys`: The symbols for all bindings
/// - `compute_bindings_fn`: Called in let scope with sym_to_slot mapping to compute binding values
/// - `body_fn`: Called in let scope to compute the body expression
///
/// Returns a tuple of (binding slots, body result, SCC info)
pub fn downgrade_bindings_generic<Ctx, B, F>(
ctx: &mut Ctx,
binding_keys: Vec<SymId>,
compute_bindings_fn: B,
body_fn: F,
) -> Result<(SccInfo, ExprId)>
where
Ctx: DowngradeContext,
B: FnOnce(&mut Ctx, &HashMap<SymId, ExprId>) -> Result<HashMap<SymId, ExprId>>,
F: FnOnce(&mut Ctx, &[SymId]) -> Result<ExprId>,
{
let slots: Vec<_> = ctx.reserve_slots(binding_keys.len()).collect();
let let_bindings: HashMap<_, _> = binding_keys
.iter()
.copied()
.zip(slots.iter().copied())
.collect();
ctx.push_dep_tracker(&slots);
ctx.with_let_scope(let_bindings.clone(), |ctx| {
let bindings = compute_bindings_fn(ctx, &let_bindings)?;
let scc_info = ctx.pop_dep_tracker()?;
for (sym, slot) in binding_keys.iter().copied().zip(slots.iter()) {
if let Some(&expr) = bindings.get(&sym) {
ctx.replace_expr(*slot, Ir::Thunk(expr));
} else { } else {
return Err(Error::downgrade_error(format!( return Err(Error::downgrade_error(format!(
"binding '{}' not found", "binding '{}' not found",
@@ -297,10 +372,103 @@ where
} }
} }
// Call the body function with the binding keys let body = body_fn(ctx, &binding_keys)?;
body_fn(ctx, &binding_keys)
})?;
// 5. Return the slots and body Ok((scc_info, body))
Ok((slots_clone.collect(), body)) })
}
/// Helper function to downgrade entries with let bindings semantics.
/// This extracts common logic for both `rec` attribute sets and `let...in` expressions.
///
/// Returns a tuple of (binding slots, body result, SCC info) where:
/// - binding slots: pre-allocated expression slots for the bindings
/// - body result: the result of calling `body_fn` in the let scope
/// - SCC info: strongly connected components information for optimization
pub fn downgrade_let_bindings<Ctx, F>(
entries: Vec<ast::Entry>,
ctx: &mut Ctx,
body_fn: F,
) -> Result<(SccInfo, ExprId)>
where
Ctx: DowngradeContext,
F: FnOnce(&mut Ctx, &[SymId]) -> Result<ExprId>,
{
let mut binding_syms = HashSet::new();
for entry in &entries {
match entry {
ast::Entry::Inherit(inherit) => {
for attr in inherit.attrs() {
if let ast::Attr::Ident(ident) = attr {
let sym = ctx.new_sym(ident.to_string());
if !binding_syms.insert(sym) {
return Err(Error::downgrade_error(format!(
"attribute '{}' already defined",
format_symbol(ctx.get_sym(sym))
)));
}
}
}
}
ast::Entry::AttrpathValue(value) => {
let attrpath = value.attrpath().unwrap();
if let Some(first_attr) = attrpath.attrs().next()
&& let ast::Attr::Ident(ident) = first_attr
{
let sym = ctx.new_sym(ident.to_string());
if !binding_syms.insert(sym) {
return Err(Error::downgrade_error(format!(
"attribute '{}' already defined",
format_symbol(ctx.get_sym(sym))
)));
}
}
}
}
}
let binding_keys: Vec<_> = binding_syms.into_iter().collect();
downgrade_bindings_generic(
ctx,
binding_keys,
|ctx, sym_to_slot| {
let mut temp_attrs = AttrSet {
stcs: HashMap::new(),
dyns: Vec::new(),
};
for entry in entries {
match entry {
ast::Entry::Inherit(inherit) => {
for attr in inherit.attrs() {
if let ast::Attr::Ident(ident) = attr {
let sym = ctx.new_sym(ident.to_string());
let slot = *sym_to_slot.get(&sym).unwrap();
ctx.set_current_binding(Some(slot));
}
}
downgrade_inherit(inherit, &mut temp_attrs.stcs, ctx)?;
ctx.set_current_binding(None);
}
ast::Entry::AttrpathValue(value) => {
let attrpath = value.attrpath().unwrap();
if let Some(first_attr) = attrpath.attrs().next()
&& let ast::Attr::Ident(ident) = first_attr
{
let sym = ctx.new_sym(ident.to_string());
let slot = *sym_to_slot.get(&sym).unwrap();
ctx.set_current_binding(Some(slot));
}
downgrade_static_attrpathvalue(value, &mut temp_attrs, ctx)?;
ctx.set_current_binding(None);
}
}
}
Ok(temp_attrs.stcs)
},
body_fn,
)
} }

78
nix-js/src/runtime.rs
View File

@@ -1,38 +1,40 @@
use std::borrow::Cow; use std::borrow::Cow;
use std::pin::Pin; use std::marker::PhantomData;
use std::ops::DerefMut;
use std::path::PathBuf;
use std::sync::Once; use std::sync::Once;
use deno_core::{Extension, ExtensionFileSource, JsRuntime, OpDecl, OpState, RuntimeOptions, v8}; use deno_core::{Extension, ExtensionFileSource, JsRuntime, OpState, RuntimeOptions, v8};
use deno_error::JsErrorClass; use deno_error::JsErrorClass;
use crate::codegen::{CodegenContext, Compile};
use crate::context::{CtxPtr, PathDropGuard};
use crate::error::{Error, Result}; use crate::error::{Error, Result};
use crate::ir::DowngradeContext;
use crate::value::{AttrSet, List, Symbol, Value}; use crate::value::{AttrSet, List, Symbol, Value};
type ScopeRef<'p, 's> = v8::PinnedRef<'p, v8::HandleScope<'s>>; type ScopeRef<'p, 's> = v8::PinnedRef<'p, v8::HandleScope<'s>>;
type LocalValue<'a> = v8::Local<'a, v8::Value>; type LocalValue<'a> = v8::Local<'a, v8::Value>;
type LocalSymbol<'a> = v8::Local<'a, v8::Symbol>; type LocalSymbol<'a> = v8::Local<'a, v8::Symbol>;
fn runtime_extension(ctx: CtxPtr) -> Extension { pub(crate) trait RuntimeCtx: 'static {
fn get_current_dir(&self) -> PathBuf;
fn push_path_stack(&mut self, path: PathBuf) -> impl DerefMut<Target = Self>;
fn compile_code(&mut self, code: &str) -> Result<String>;
}
fn runtime_extension<Ctx: RuntimeCtx>() -> Extension {
const ESM: &[ExtensionFileSource] = const ESM: &[ExtensionFileSource] =
&deno_core::include_js_files!(nix_runtime dir "runtime-ts/dist", "runtime.js"); &deno_core::include_js_files!(nix_runtime dir "runtime-ts/dist", "runtime.js");
const OPS: &[OpDecl] = &[ let ops = vec![
op_import(), op_import::<Ctx>(),
op_read_file(), op_read_file(),
op_path_exists(), op_path_exists(),
op_resolve_path(), op_resolve_path::<Ctx>(),
]; ];
Extension { Extension {
name: "nix_runtime", name: "nix_runtime",
esm_files: Cow::Borrowed(ESM), esm_files: Cow::Borrowed(ESM),
esm_entry_point: Some("ext:nix_runtime/runtime.js"), esm_entry_point: Some("ext:nix_runtime/runtime.js"),
ops: Cow::Borrowed(OPS), ops: Cow::Owned(ops),
op_state_fn: Some(Box::new(move |state| {
state.put(ctx);
})),
enabled: true, enabled: true,
..Default::default() ..Default::default()
} }
@@ -67,9 +69,11 @@ use private::NixError;
#[deno_core::op2] #[deno_core::op2]
#[string] #[string]
fn op_import(state: &mut OpState, #[string] path: String) -> std::result::Result<String, NixError> { fn op_import<Ctx: RuntimeCtx>(
let ptr = state.borrow_mut::<CtxPtr>(); state: &mut OpState,
let ctx = unsafe { ptr.as_mut() }; #[string] path: String,
) -> std::result::Result<String, NixError> {
let ctx = state.borrow_mut::<Ctx>();
let current_dir = ctx.get_current_dir(); let current_dir = ctx.get_current_dir();
let mut absolute_path = current_dir let mut absolute_path = current_dir
@@ -80,30 +84,13 @@ fn op_import(state: &mut OpState, #[string] path: String) -> std::result::Result
absolute_path.push("default.nix") absolute_path.push("default.nix")
} }
let mut guard = PathDropGuard::new(absolute_path.clone(), ctx);
let ctx = guard.as_ctx();
let content = std::fs::read_to_string(&absolute_path) let content = std::fs::read_to_string(&absolute_path)
.map_err(|e| format!("Failed to read {}: {}", absolute_path.display(), e))?; .map_err(|e| format!("Failed to read {}: {}", absolute_path.display(), e))?;
let root = rnix::Root::parse(&content); let mut guard = ctx.push_path_stack(absolute_path);
if !root.errors().is_empty() { let ctx = guard.deref_mut();
return Err(format!(
"Parse error in {}: {:?}",
absolute_path.display(),
root.errors()
)
.into());
}
let expr = root.tree().expr().ok_or("No expression in file")?; Ok(ctx.compile_code(&content).map_err(|err| err.to_string())?)
let expr_id = ctx
.as_mut()
.downgrade_ctx()
.downgrade(expr)
.map_err(|e| format!("Downgrade error: {}", e))?;
Ok(ctx.get_ir(expr_id).compile(Pin::get_ref(ctx.as_ref())))
} }
#[deno_core::op2] #[deno_core::op2]
@@ -119,12 +106,11 @@ fn op_path_exists(#[string] path: String) -> bool {
#[deno_core::op2] #[deno_core::op2]
#[string] #[string]
fn op_resolve_path( fn op_resolve_path<Ctx: RuntimeCtx>(
state: &mut OpState, state: &mut OpState,
#[string] path: String, #[string] path: String,
) -> std::result::Result<String, NixError> { ) -> std::result::Result<String, NixError> {
let ptr = state.borrow::<CtxPtr>(); let ctx = state.borrow::<Ctx>();
let ctx = unsafe { ptr.as_ref() };
// If already absolute, return as-is // If already absolute, return as-is
if path.starts_with('/') { if path.starts_with('/') {
@@ -141,14 +127,15 @@ fn op_resolve_path(
.map_err(|e| format!("Failed to resolve path {}: {}", path, e))?) .map_err(|e| format!("Failed to resolve path {}: {}", path, e))?)
} }
pub(crate) struct Runtime { pub(crate) struct Runtime<Ctx: RuntimeCtx> {
js_runtime: JsRuntime, js_runtime: JsRuntime,
is_thunk_symbol: v8::Global<v8::Symbol>, is_thunk_symbol: v8::Global<v8::Symbol>,
primop_metadata_symbol: v8::Global<v8::Symbol>, primop_metadata_symbol: v8::Global<v8::Symbol>,
_marker: PhantomData<Ctx>,
} }
impl Runtime { impl<Ctx: RuntimeCtx> Runtime<Ctx> {
pub(crate) fn new(ctx: CtxPtr) -> Result<Self> { pub(crate) fn new() -> Result<Self> {
// Initialize V8 once // Initialize V8 once
static INIT: Once = Once::new(); static INIT: Once = Once::new();
INIT.call_once(|| { INIT.call_once(|| {
@@ -159,7 +146,7 @@ impl Runtime {
}); });
let mut js_runtime = JsRuntime::new(RuntimeOptions { let mut js_runtime = JsRuntime::new(RuntimeOptions {
extensions: vec![runtime_extension(ctx)], extensions: vec![runtime_extension::<Ctx>()],
..Default::default() ..Default::default()
}); });
@@ -172,10 +159,13 @@ impl Runtime {
js_runtime, js_runtime,
is_thunk_symbol, is_thunk_symbol,
primop_metadata_symbol, primop_metadata_symbol,
_marker: PhantomData,
}) })
} }
pub(crate) fn eval(&mut self, script: String) -> Result<Value> { pub(crate) fn eval(&mut self, script: String, ctx: Ctx) -> Result<Value> {
self.js_runtime.op_state().borrow_mut().put(ctx);
let global_value = self let global_value = self
.js_runtime .js_runtime
.execute_script("<eval>", script) .execute_script("<eval>", script)

65
nix-js/tests/basic_eval.rs Normal file
View File

@@ -0,0 +1,65 @@
mod utils;
use nix_js::value::Value;
use utils::eval;
#[test]
fn arithmetic() {
assert_eq!(eval("1 + 1"), Value::Int(2));
}
#[test]
fn simple_function_application() {
assert_eq!(eval("(x: x) 1"), Value::Int(1));
}
#[test]
fn curried_function() {
assert_eq!(eval("(x: y: x - y) 2 1"), Value::Int(1));
}
#[test]
fn rec_attrset() {
assert_eq!(eval("rec { b = a; a = 1; }.b"), Value::Int(1));
}
#[test]
fn let_binding() {
assert_eq!(eval("let b = a; a = 1; in b"), Value::Int(1));
}
#[test]
fn fibonacci() {
assert_eq!(
eval(
"let fib = n: if n == 1 || n == 2 then 1 else (fib (n - 1)) + (fib (n - 2)); in fib 30"
),
Value::Int(832040)
);
}
#[test]
fn fixed_point_combinator() {
assert_eq!(
eval("((f: let x = f x; in x)(self: { x = 1; y = self.x + 1; })).y"),
Value::Int(2)
);
}
#[test]
fn conditional_true() {
assert_eq!(eval("if true then 1 else 0"), Value::Int(1));
}
#[test]
fn conditional_false() {
assert_eq!(eval("if false then 1 else 0"), Value::Int(0));
}
#[test]
fn nested_let() {
assert_eq!(
eval("let x = 1; in let y = x + 1; z = y + 1; in z"),
Value::Int(3)
);
}

149
nix-js/tests/builtins.rs Normal file
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@@ -0,0 +1,149 @@
mod utils;
use nix_js::value::{List, Value};
use utils::eval;
#[test]
fn builtins_accessible() {
let result = eval("builtins");
assert!(matches!(result, Value::AttrSet(_)));
}
#[test]
fn builtins_self_reference() {
let result = eval("builtins.builtins");
assert!(matches!(result, Value::AttrSet(_)));
}
#[test]
fn builtins_add() {
assert_eq!(eval("builtins.add 1 2"), Value::Int(3));
}
#[test]
fn builtins_length() {
assert_eq!(eval("builtins.length [1 2 3]"), Value::Int(3));
}
#[test]
fn builtins_map() {
assert_eq!(
eval("builtins.map (x: x * 2) [1 2 3]"),
Value::List(List::new(vec![Value::Int(2), Value::Int(4), Value::Int(6)]))
);
}
#[test]
fn builtins_filter() {
assert_eq!(
eval("builtins.filter (x: x > 1) [1 2 3]"),
Value::List(List::new(vec![Value::Int(2), Value::Int(3)]))
);
}
#[test]
fn builtins_attrnames() {
let result = eval("builtins.attrNames { a = 1; b = 2; }");
assert!(matches!(result, Value::List(_)));
if let Value::List(list) = result {
assert_eq!(format!("{:?}", list).matches(',').count() + 1, 2);
}
}
#[test]
fn builtins_head() {
assert_eq!(eval("builtins.head [1 2 3]"), Value::Int(1));
}
#[test]
fn builtins_tail() {
assert_eq!(
eval("builtins.tail [1 2 3]"),
Value::List(List::new(vec![Value::Int(2), Value::Int(3)]))
);
}
#[test]
fn builtins_in_let() {
assert_eq!(eval("let b = builtins; in b.add 5 3"), Value::Int(8));
}
#[test]
fn builtins_in_with() {
assert_eq!(eval("with builtins; add 10 20"), Value::Int(30));
}
#[test]
fn builtins_nested_calls() {
assert_eq!(
eval("builtins.add (builtins.mul 2 3) (builtins.sub 10 5)"),
Value::Int(11)
);
}
#[test]
fn builtins_is_list() {
assert_eq!(eval("builtins.isList [1 2 3]"), Value::Bool(true));
}
#[test]
fn builtins_is_attrs() {
assert_eq!(eval("builtins.isAttrs { a = 1; }"), Value::Bool(true));
}
#[test]
fn builtins_is_function() {
assert_eq!(eval("builtins.isFunction (x: x)"), Value::Bool(true));
}
#[test]
fn builtins_is_null() {
assert_eq!(eval("builtins.isNull null"), Value::Bool(true));
}
#[test]
fn builtins_is_bool() {
assert_eq!(eval("builtins.isBool true"), Value::Bool(true));
}
#[test]
fn builtins_shadowing() {
assert_eq!(
eval("let builtins = { add = x: y: x - y; }; in builtins.add 5 3"),
Value::Int(2)
);
}
#[test]
fn builtins_lazy_evaluation() {
let result = eval("builtins.builtins.builtins.add 1 1");
assert_eq!(result, Value::Int(2));
}
#[test]
fn builtins_foldl() {
assert_eq!(
eval("builtins.foldl' (acc: x: acc + x) 0 [1 2 3 4 5]"),
Value::Int(15)
);
}
#[test]
fn builtins_elem() {
assert_eq!(eval("builtins.elem 2 [1 2 3]"), Value::Bool(true));
assert_eq!(eval("builtins.elem 5 [1 2 3]"), Value::Bool(false));
}
#[test]
fn builtins_concat_lists() {
assert_eq!(
eval("builtins.concatLists [[1 2] [3 4] [5]]"),
Value::List(List::new(vec![
Value::Int(1),
Value::Int(2),
Value::Int(3),
Value::Int(4),
Value::Int(5)
]))
);
}

75
nix-js/tests/free_globals.rs Normal file
View File

@@ -0,0 +1,75 @@
mod utils;
use nix_js::value::{List, Value};
use utils::eval;
#[test]
fn true_literal() {
assert_eq!(eval("true"), Value::Bool(true));
}
#[test]
fn false_literal() {
assert_eq!(eval("false"), Value::Bool(false));
}
#[test]
fn null_literal() {
assert_eq!(eval("null"), Value::Null);
}
#[test]
fn map_function() {
assert_eq!(
eval("map (x: x * 2) [1 2 3]"),
Value::List(List::new(vec![Value::Int(2), Value::Int(4), Value::Int(6)]))
);
}
#[test]
fn is_null_function() {
assert_eq!(eval("isNull null"), Value::Bool(true));
assert_eq!(eval("isNull 5"), Value::Bool(false));
}
#[test]
fn shadow_true() {
assert_eq!(eval("let true = false; in true"), Value::Bool(false));
}
#[test]
fn shadow_map() {
assert_eq!(eval("let map = x: y: x; in map 1 2"), Value::Int(1));
}
#[test]
fn mixed_usage() {
assert_eq!(
eval("if true then map (x: x + 1) [1 2] else []"),
Value::List(List::new(vec![Value::Int(2), Value::Int(3)]))
);
}
#[test]
fn in_let_bindings() {
assert_eq!(
eval("let x = true; y = false; in x && y"),
Value::Bool(false)
);
}
#[test]
fn shadow_in_function() {
assert_eq!(eval("(true: true) false"), Value::Bool(false));
}
#[test]
fn throw_function() {
let result = utils::eval_result("throw \"error message\"");
assert!(result.is_err());
}
#[test]
fn to_string_function() {
assert_eq!(eval("toString 42"), Value::String("42".to_string()));
}

121
nix-js/tests/functions.rs Normal file
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@@ -0,0 +1,121 @@
mod utils;
use nix_js::value::Value;
use utils::{eval, eval_result};
#[test]
fn required_parameters() {
assert_eq!(eval("({ a, b }: a + b) { a = 1; b = 2; }"), Value::Int(3));
}
#[test]
fn missing_required_parameter() {
let result = eval_result("({ a, b }: a + b) { a = 1; }");
assert!(result.is_err());
}
#[test]
fn all_required_parameters_present() {
assert_eq!(
eval("({ x, y, z }: x + y + z) { x = 1; y = 2; z = 3; }"),
Value::Int(6)
);
}
#[test]
fn reject_unexpected_arguments() {
let result = eval_result("({ a, b }: a + b) { a = 1; b = 2; c = 3; }");
assert!(result.is_err());
}
#[test]
fn ellipsis_accepts_extra_arguments() {
assert_eq!(
eval("({ a, b, ... }: a + b) { a = 1; b = 2; c = 3; }"),
Value::Int(3)
);
}
#[test]
fn default_parameters() {
assert_eq!(eval("({ a, b ? 5 }: a + b) { a = 1; }"), Value::Int(6));
}
#[test]
fn override_default_parameter() {
assert_eq!(
eval("({ a, b ? 5 }: a + b) { a = 1; b = 10; }"),
Value::Int(11)
);
}
#[test]
fn at_pattern_alias() {
assert_eq!(
eval("(args@{ a, b }: args.a + args.b) { a = 1; b = 2; }"),
Value::Int(3)
);
}
#[test]
fn simple_parameter_no_validation() {
assert_eq!(eval("(x: x.a + x.b) { a = 1; b = 2; }"), Value::Int(3));
}
#[test]
fn simple_parameter_accepts_any_argument() {
assert_eq!(eval("(x: x) 42"), Value::Int(42));
}
#[test]
fn nested_function_parameters() {
assert_eq!(
eval("({ a }: { b }: a + b) { a = 5; } { b = 3; }"),
Value::Int(8)
);
}
#[test]
fn pattern_param_simple_reference_in_default() {
assert_eq!(eval("({ a, b ? a }: b) { a = 10; }"), Value::Int(10));
}
#[test]
fn pattern_param_multiple_references_in_default() {
assert_eq!(
eval("({ a, b ? a + 5, c ? 1 }: b + c) { a = 10; }"),
Value::Int(16)
);
}
#[test]
fn pattern_param_mutual_reference() {
assert_eq!(
eval("({ a, b ? c + 1, c ? 5 }: b) { a = 1; }"),
Value::Int(6)
);
}
#[test]
fn pattern_param_override_mutual_reference() {
assert_eq!(
eval("({ a, b ? c + 1, c ? 5 }: b) { a = 1; c = 10; }"),
Value::Int(11)
);
}
#[test]
fn pattern_param_reference_list() {
assert_eq!(
eval("({ a, b ? [ a 2 ] }: builtins.elemAt b 0) { a = 42; }"),
Value::Int(42)
);
}
#[test]
fn pattern_param_alias_in_default() {
assert_eq!(
eval("(args@{ a, b ? args.a + 10 }: b) { a = 5; }"),
Value::Int(15)
);
}

102
nix-js/tests/io_operations.rs Normal file
View File

@@ -0,0 +1,102 @@
mod utils;
use nix_js::context::Context;
use nix_js::value::Value;
#[test]
fn import_absolute_path() {
let mut ctx = Context::new().unwrap();
let temp_dir = tempfile::tempdir().unwrap();
let lib_path = temp_dir.path().join("nix_test_lib.nix");
std::fs::write(&lib_path, "{ add = a: b: a + b; }").unwrap();
let expr = format!(r#"(import "{}").add 3 5"#, lib_path.display());
assert_eq!(ctx.eval_code(&expr).unwrap(), Value::Int(8));
}
#[test]
fn import_nested() {
let mut ctx = Context::new().unwrap();
let temp_dir = tempfile::tempdir().unwrap();
let lib_path = temp_dir.path().join("lib.nix");
std::fs::write(&lib_path, "{ add = a: b: a + b; }").unwrap();
let main_path = temp_dir.path().join("main.nix");
let main_content = format!(
r#"let lib = import {}; in {{ result = lib.add 10 20; }}"#,
lib_path.display()
);
std::fs::write(&main_path, main_content).unwrap();
let expr = format!(r#"(import "{}").result"#, main_path.display());
assert_eq!(ctx.eval_code(&expr).unwrap(), Value::Int(30));
}
#[test]
fn import_relative_path() {
let mut ctx = Context::new().unwrap();
let temp_dir = tempfile::tempdir().unwrap();
let subdir = temp_dir.path().join("subdir");
std::fs::create_dir_all(&subdir).unwrap();
let lib_path = temp_dir.path().join("lib.nix");
std::fs::write(&lib_path, "{ multiply = a: b: a * b; }").unwrap();
let helper_path = subdir.join("helper.nix");
std::fs::write(&helper_path, "{ subtract = a: b: a - b; }").unwrap();
let main_path = temp_dir.path().join("main.nix");
let main_content = r#"
let
lib = import ./lib.nix;
helper = import ./subdir/helper.nix;
in {
result1 = lib.multiply 3 4;
result2 = helper.subtract 10 3;
}
"#;
std::fs::write(&main_path, main_content).unwrap();
let expr = format!(r#"let x = import "{}"; in x.result1"#, main_path.display());
assert_eq!(ctx.eval_code(&expr).unwrap(), Value::Int(12));
let expr = format!(r#"let x = import "{}"; in x.result2"#, main_path.display());
assert_eq!(ctx.eval_code(&expr).unwrap(), Value::Int(7));
}
#[test]
fn import_returns_function() {
let mut ctx = Context::new().unwrap();
let temp_dir = tempfile::tempdir().unwrap();
let func_path = temp_dir.path().join("nix_test_func.nix");
std::fs::write(&func_path, "x: x * 2").unwrap();
let expr = format!(r#"(import "{}") 5"#, func_path.display());
assert_eq!(ctx.eval_code(&expr).unwrap(), Value::Int(10));
}
#[test]
fn import_with_complex_dependency_graph() {
let mut ctx = Context::new().unwrap();
let temp_dir = tempfile::tempdir().unwrap();
let utils_path = temp_dir.path().join("utils.nix");
std::fs::write(&utils_path, "{ double = x: x * 2; }").unwrap();
let math_path = temp_dir.path().join("math.nix");
let math_content = r#"let utils = import ./utils.nix; in { triple = x: x + utils.double x; }"#;
std::fs::write(&math_path, math_content).unwrap();
let main_path = temp_dir.path().join("main.nix");
let main_content = r#"let math = import ./math.nix; in math.triple 5"#;
std::fs::write(&main_path, main_content).unwrap();
let expr = format!(r#"import "{}""#, main_path.display());
assert_eq!(ctx.eval_code(&expr).unwrap(), Value::Int(15));
}

139
nix-js/tests/numeric_types.rs Normal file
View File

@@ -0,0 +1,139 @@
mod utils;
use nix_js::value::Value;
use utils::eval;
#[test]
fn large_i64_max() {
assert_eq!(eval("9223372036854775807"), Value::Int(9223372036854775807));
}
#[test]
fn large_i64_negative() {
assert_eq!(
eval("-9223372036854775807"),
Value::Int(-9223372036854775807)
);
}
#[test]
fn large_number_arithmetic() {
assert_eq!(
eval("5000000000000000000 + 3000000000000000000"),
Value::Int(8000000000000000000i64)
);
}
#[test]
fn is_int_with_int() {
assert_eq!(eval("builtins.isInt 42"), Value::Bool(true));
}
#[test]
fn is_int_with_float() {
assert_eq!(eval("builtins.isInt 42.0"), Value::Bool(false));
}
#[test]
fn is_float_with_int() {
assert_eq!(eval("builtins.isFloat 42"), Value::Bool(false));
}
#[test]
fn is_float_with_float() {
assert_eq!(eval("builtins.isFloat 42.5"), Value::Bool(true));
assert_eq!(eval("builtins.isFloat 1.0"), Value::Bool(true));
}
#[test]
fn typeof_int() {
assert_eq!(eval("builtins.typeOf 1"), Value::String("int".to_string()));
}
#[test]
fn typeof_float() {
assert_eq!(
eval("builtins.typeOf 1.0"),
Value::String("float".to_string())
);
assert_eq!(
eval("builtins.typeOf 3.14"),
Value::String("float".to_string())
);
}
#[test]
fn int_literal() {
assert_eq!(eval("1"), Value::Int(1));
}
#[test]
fn float_literal() {
assert_eq!(eval("1."), Value::Float(1.));
}
#[test]
fn int_plus_int() {
assert_eq!(
eval("builtins.typeOf (1 + 2)"),
Value::String("int".to_string())
);
}
#[test]
fn int_plus_float() {
assert_eq!(
eval("builtins.typeOf (1 + 2.0)"),
Value::String("float".to_string())
);
}
#[test]
fn int_times_int() {
assert_eq!(
eval("builtins.typeOf (3 * 4)"),
Value::String("int".to_string())
);
}
#[test]
fn int_times_float() {
assert_eq!(
eval("builtins.typeOf (3 * 4.0)"),
Value::String("float".to_string())
);
}
#[test]
fn integer_division() {
assert_eq!(eval("5 / 2"), Value::Int(2));
assert_eq!(eval("7 / 3"), Value::Int(2));
assert_eq!(eval("10 / 3"), Value::Int(3));
}
#[test]
fn float_division() {
assert_eq!(eval("5 / 2.0"), Value::Float(2.5));
assert_eq!(eval("7.0 / 2"), Value::Float(3.5));
}
#[test]
fn negative_integer_division() {
assert_eq!(eval("(-7) / 3"), Value::Int(-2));
}
#[test]
fn builtin_add_with_large_numbers() {
assert_eq!(
eval("builtins.add 5000000000000000000 3000000000000000000"),
Value::Int(8000000000000000000i64)
);
}
#[test]
fn builtin_mul_with_large_numbers() {
assert_eq!(
eval("builtins.mul 1000000000 1000000000"),
Value::Int(1000000000000000000i64)
);
}

101
nix-js/tests/operators.rs Normal file
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@@ -0,0 +1,101 @@
mod utils;
use nix_js::value::{AttrSet, List, Symbol, Value};
use std::collections::BTreeMap;
use utils::eval;
#[test]
fn addition() {
assert_eq!(eval("1 + 1"), Value::Int(2));
}
#[test]
fn subtraction() {
assert_eq!(eval("2 - 1"), Value::Int(1));
}
#[test]
fn multiplication() {
assert_eq!(eval("1. * 1"), Value::Float(1.));
}
#[test]
fn division() {
assert_eq!(eval("1 / 1."), Value::Float(1.));
}
#[test]
fn equality() {
assert_eq!(eval("1 == 1"), Value::Bool(true));
}
#[test]
fn inequality() {
assert_eq!(eval("1 != 1"), Value::Bool(false));
}
#[test]
fn less_than() {
assert_eq!(eval("2 < 1"), Value::Bool(false));
}
#[test]
fn greater_than() {
assert_eq!(eval("2 > 1"), Value::Bool(true));
}
#[test]
fn less_than_or_equal() {
assert_eq!(eval("1 <= 1"), Value::Bool(true));
}
#[test]
fn greater_than_or_equal() {
assert_eq!(eval("1 >= 1"), Value::Bool(true));
}
#[test]
fn logical_or_short_circuit() {
assert_eq!(eval("true || (1 / 0)"), Value::Bool(true));
}
#[test]
fn logical_and() {
assert_eq!(eval("true && 1 == 0"), Value::Bool(false));
}
#[test]
fn list_concatenation() {
assert_eq!(
eval("[ 1 2 3 ] ++ [ 4 5 6 ]"),
Value::List(List::new((1..=6).map(Value::Int).collect()))
);
}
#[test]
fn attrset_update() {
assert_eq!(
eval("{ a.b = 1; b = 2; } // { a.c = 2; }"),
Value::AttrSet(AttrSet::new(BTreeMap::from([
(
Symbol::from("a"),
Value::AttrSet(AttrSet::new(BTreeMap::from([(
Symbol::from("c"),
Value::Int(2),
)]))),
),
(Symbol::from("b"), Value::Int(2)),
])))
);
}
#[test]
fn unary_negation() {
assert_eq!(eval("-5"), Value::Int(-5));
}
#[test]
fn logical_not() {
assert_eq!(eval("!true"), Value::Bool(false));
assert_eq!(eval("!false"), Value::Bool(true));
}

120
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mod utils;
use nix_js::value::Value;
use utils::eval;
#[test]
fn non_recursive_bindings() {
assert_eq!(eval("let x = 1; y = 2; z = x + y; in z"), Value::Int(3));
}
#[test]
fn non_recursive_multiple_bindings() {
assert_eq!(
eval("let a = 10; b = 20; c = 30; d = a + b + c; in d"),
Value::Int(60)
);
}
#[test]
fn recursive_fibonacci() {
assert_eq!(
eval("let fib = n: if n <= 1 then 1 else fib (n - 1) + fib (n - 2); in fib 5"),
Value::Int(8)
);
}
#[test]
fn recursive_factorial() {
assert_eq!(
eval("let factorial = n: if n == 0 then 1 else n * factorial (n - 1); in factorial 5"),
Value::Int(120)
);
}
#[test]
fn mutual_recursion_simple() {
assert_eq!(
eval(
"let f = n: if n == 0 then 0 else g (n - 1); g = n: if n == 0 then 1 else f (n - 1); in f 5"
),
Value::Int(1)
);
}
#[test]
fn mutual_recursion_even_odd() {
assert_eq!(
eval(
"let even = n: if n == 0 then true else odd (n - 1); odd = n: if n == 0 then false else even (n - 1); in even 4"
),
Value::Bool(true)
);
}
#[test]
fn mixed_recursive_and_non_recursive() {
assert_eq!(
eval("let x = 1; f = n: if n == 0 then x else f (n - 1); in f 5"),
Value::Int(1)
);
}
#[test]
fn mixed_with_multiple_non_recursive() {
assert_eq!(
eval(
"let a = 10; b = 20; sum = a + b; countdown = n: if n == 0 then sum else countdown (n - 1); in countdown 3"
),
Value::Int(30)
);
}
#[test]
fn rec_attrset_non_recursive() {
assert_eq!(eval("rec { x = 1; y = 2; z = x + y; }.z"), Value::Int(3));
}
#[test]
fn rec_attrset_recursive() {
assert_eq!(
eval("rec { f = n: if n == 0 then 0 else f (n - 1); }.f 10"),
Value::Int(0)
);
}
#[test]
fn nested_let_non_recursive() {
assert_eq!(
eval("let x = 1; in let y = x + 1; z = y + 1; in z"),
Value::Int(3)
);
}
#[test]
fn nested_let_with_recursive() {
assert_eq!(
eval("let f = n: if n == 0 then 0 else f (n - 1); in let g = m: f m; in g 5"),
Value::Int(0)
);
}
#[test]
fn three_way_mutual_recursion() {
assert_eq!(
eval(
"let a = n: if n == 0 then 1 else b (n - 1); b = n: if n == 0 then 2 else c (n - 1); c = n: if n == 0 then 3 else a (n - 1); in a 6"
),
Value::Int(1)
);
}
#[test]
fn complex_mixed_dependencies() {
assert_eq!(
eval(
"let x = 5; y = 10; sum = x + y; fib = n: if n <= 1 then 1 else fib (n - 1) + fib (n - 2); result = sum + fib 5; in result"
),
Value::Int(23)
);
}

251
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mod utils;
use nix_js::value::Value;
use utils::eval;
#[test]
fn string_returns_as_is() {
assert_eq!(
eval(r#"toString "hello""#),
Value::String("hello".to_string())
);
}
#[test]
fn integer_to_string() {
assert_eq!(eval("toString 42"), Value::String("42".to_string()));
assert_eq!(eval("toString (-5)"), Value::String("-5".to_string()));
assert_eq!(eval("toString 0"), Value::String("0".to_string()));
}
#[test]
fn float_to_string() {
assert_eq!(eval("toString 3.14"), Value::String("3.14".to_string()));
assert_eq!(eval("toString 0.0"), Value::String("0".to_string()));
assert_eq!(eval("toString (-2.5)"), Value::String("-2.5".to_string()));
}
#[test]
fn bool_to_string() {
assert_eq!(eval("toString true"), Value::String("1".to_string()));
assert_eq!(eval("toString false"), Value::String("".to_string()));
}
#[test]
fn null_to_string() {
assert_eq!(eval("toString null"), Value::String("".to_string()));
}
#[test]
fn simple_list_to_string() {
assert_eq!(eval("toString [1 2 3]"), Value::String("1 2 3".to_string()));
assert_eq!(
eval(r#"toString ["a" "b" "c"]"#),
Value::String("a b c".to_string())
);
}
#[test]
fn nested_list_flattens() {
assert_eq!(
eval("toString [[1 2] [3 4]]"),
Value::String("1 2 3 4".to_string())
);
assert_eq!(
eval("toString [1 [2 3] 4]"),
Value::String("1 2 3 4".to_string())
);
}
#[test]
fn empty_list_in_list_no_extra_space() {
assert_eq!(eval("toString [1 [] 2]"), Value::String("1 2".to_string()));
assert_eq!(eval("toString [[] 1 2]"), Value::String("1 2".to_string()));
assert_eq!(eval("toString [1 2 []]"), Value::String("1 2 ".to_string()));
}
#[test]
fn list_with_multiple_empty_lists() {
assert_eq!(
eval("toString [1 [] [] 2]"),
Value::String("1 2".to_string())
);
assert_eq!(eval("toString [[] [] 1]"), Value::String("1".to_string()));
}
#[test]
fn list_with_bool_and_null() {
assert_eq!(
eval("toString [true false null]"),
Value::String("1 ".to_string())
);
assert_eq!(
eval("toString [1 true 2 false 3]"),
Value::String("1 1 2 3".to_string())
);
}
#[test]
fn mixed_type_list() {
assert_eq!(
eval(r#"toString [1 "hello" 2.5 true]"#),
Value::String("1 hello 2.5 1".to_string())
);
}
#[test]
fn attrs_with_out_path() {
assert_eq!(
eval(r#"toString { outPath = "/nix/store/foo"; }"#),
Value::String("/nix/store/foo".to_string())
);
}
#[test]
fn attrs_with_to_string_method() {
assert_eq!(
eval(r#"toString { __toString = self: "custom"; }"#),
Value::String("custom".to_string())
);
}
#[test]
fn attrs_to_string_self_reference() {
assert_eq!(
eval(
r#"let obj = { x = 42; __toString = self: "x is ${toString self.x}"; }; in toString obj"#
),
Value::String("x is 42".to_string())
);
}
#[test]
fn attrs_to_string_priority() {
assert_eq!(
eval(r#"toString { __toString = self: "custom"; outPath = "/nix/store/foo"; }"#),
Value::String("custom".to_string())
);
}
#[test]
fn derivation_like_object() {
assert_eq!(
eval(
r#"let drv = { type = "derivation"; outPath = "/nix/store/hash-pkg"; }; in toString drv"#
),
Value::String("/nix/store/hash-pkg".to_string())
);
}
#[test]
fn string_interpolation_with_int() {
assert_eq!(
eval(r#""value: ${toString 42}""#),
Value::String("value: 42".to_string())
);
}
#[test]
fn string_interpolation_with_list() {
assert_eq!(
eval(r#""items: ${toString [1 2 3]}""#),
Value::String("items: 1 2 3".to_string())
);
}
#[test]
fn nested_to_string_calls() {
assert_eq!(
eval(r#"toString (toString 42)"#),
Value::String("42".to_string())
);
}
#[test]
fn to_string_in_let_binding() {
assert_eq!(
eval(r#"let x = toString 42; y = toString 10; in "${x}-${y}""#),
Value::String("42-10".to_string())
);
}
#[test]
fn empty_string() {
assert_eq!(eval(r#"toString """#), Value::String("".to_string()));
}
#[test]
fn empty_list() {
assert_eq!(eval("toString []"), Value::String("".to_string()));
}
#[test]
fn to_string_preserves_spaces_in_strings() {
assert_eq!(
eval(r#"toString "hello world""#),
Value::String("hello world".to_string())
);
}
#[test]
fn list_of_empty_strings() {
assert_eq!(
eval(r#"toString ["" "" ""]"#),
Value::String(" ".to_string())
);
}
#[test]
fn deeply_nested_lists() {
assert_eq!(
eval("toString [[[1] [2]] [[3] [4]]]"),
Value::String("1 2 3 4".to_string())
);
}
#[test]
fn list_with_nested_empty_lists() {
assert_eq!(
eval("toString [1 [[]] 2]"),
Value::String("1 2".to_string())
);
}
#[test]
fn attrs_without_out_path_or_to_string_fails() {
let result = utils::eval_result(r#"toString { foo = "bar"; }"#);
assert!(result.is_err());
}
#[test]
fn function_to_string_fails() {
let result = utils::eval_result("toString (x: x)");
assert!(result.is_err());
}
#[test]
fn to_string_method_must_return_string() {
let result = utils::eval_result(r#"toString { __toString = self: 42; }"#);
assert!(result.is_err());
}
#[test]
fn out_path_can_be_nested() {
assert_eq!(
eval(r#"toString { outPath = { outPath = "/final/path"; }; }"#),
Value::String("/final/path".to_string())
);
}
#[test]
fn list_spacing_matches_nix_behavior() {
assert_eq!(
eval(r#"toString ["a" "b"]"#),
Value::String("a b".to_string())
);
assert_eq!(
eval(r#"toString ["a" ["b" "c"] "d"]"#),
Value::String("a b c d".to_string())
);
}

12
nix-js/tests/utils.rs Normal file
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#![allow(dead_code)]
use nix_js::context::Context;
use nix_js::value::Value;
pub fn eval(expr: &str) -> Value {
Context::new().unwrap().eval_code(expr).unwrap()
}
pub fn eval_result(expr: &str) -> Result<Value, nix_js::error::Error> {
Context::new().unwrap().eval_code(expr)
}