ok we're back to rust
This commit is contained in:
parent
f85b5d6785
commit
809c25c8bc
17 changed files with 1347 additions and 118 deletions
1
.gitignore
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1
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@ -10,3 +10,4 @@ lib/bs
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__tests__/**/*.mjs
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__tests__/**/*.mjs
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src/**/*.mjs
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src/**/*.mjs
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target
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220
Cargo.lock
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Cargo.lock
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# This file is automatically @generated by Cargo.
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# It is not intended for manual editing.
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version = 3
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"autocfg",
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"scopeguard",
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]
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[[package]]
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dependencies = [
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"cfg-if",
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"libc",
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"redox_syscall",
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"smallvec",
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"windows-targets",
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]
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[[package]]
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dependencies = [
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"rand_core",
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]
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[[package]]
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dependencies = [
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"typenum",
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]
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[[package]]
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dependencies = [
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"windows_aarch64_gnullvm",
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"windows_aarch64_msvc",
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"windows_i686_gnu",
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"windows_i686_msvc",
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"windows_x86_64_gnu",
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"windows_x86_64_gnullvm",
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"windows_x86_64_msvc",
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]
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[[package]]
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[[package]]
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[[package]]
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[[package]]
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[[package]]
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[[package]]
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name = "windows_x86_64_msvc"
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version = "0.48.5"
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checksum = "ed94fce61571a4006852b7389a063ab983c02eb1bb37b47f8272ce92d06d9538"
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3
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[workspace]
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resolver = "2"
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members = ["bidir"]
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4
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.PHONY: doc
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doc:
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cargo doc --workspace --no-deps --document-private-items
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1
bidir/.gitignore
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target
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# This file is automatically @generated by Cargo.
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# It is not intended for manual editing.
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version = 3
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name = "anyhow"
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version = "1.0.75"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "a4668cab20f66d8d020e1fbc0ebe47217433c1b6c8f2040faf858554e394ace6"
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name = "autocfg"
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version = "1.1.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "d468802bab17cbc0cc575e9b053f41e72aa36bfa6b7f55e3529ffa43161b97fa"
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[[package]]
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name = "bidir"
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version = "0.1.0"
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dependencies = [
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"anyhow",
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"im",
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"lazy_static",
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"parking_lot",
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]
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[[package]]
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name = "bitflags"
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version = "1.3.2"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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[[package]]
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name = "bitmaps"
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version = "2.1.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "031043d04099746d8db04daf1fa424b2bc8bd69d92b25962dcde24da39ab64a2"
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dependencies = [
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"typenum",
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]
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name = "cfg-if"
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version = "1.0.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
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name = "im"
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version = "15.1.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "d0acd33ff0285af998aaf9b57342af478078f53492322fafc47450e09397e0e9"
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dependencies = [
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"bitmaps",
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"rand_core",
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"rand_xoshiro",
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"sized-chunks",
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"typenum",
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"version_check",
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]
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name = "lazy_static"
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version = "1.4.0"
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name = "libc"
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version = "0.2.149"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "a08173bc88b7955d1b3145aa561539096c421ac8debde8cbc3612ec635fee29b"
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[[package]]
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name = "lock_api"
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version = "0.4.11"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "3c168f8615b12bc01f9c17e2eb0cc07dcae1940121185446edc3744920e8ef45"
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dependencies = [
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"autocfg",
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"scopeguard",
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]
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name = "parking_lot"
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version = "0.12.1"
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dependencies = [
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"lock_api",
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"parking_lot_core",
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]
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name = "parking_lot_core"
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||||||
|
version = "0.9.9"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "4c42a9226546d68acdd9c0a280d17ce19bfe27a46bf68784e4066115788d008e"
|
||||||
|
dependencies = [
|
||||||
|
"cfg-if",
|
||||||
|
"libc",
|
||||||
|
"redox_syscall",
|
||||||
|
"smallvec",
|
||||||
|
"windows-targets",
|
||||||
|
]
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "rand_core"
|
||||||
|
version = "0.6.4"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "ec0be4795e2f6a28069bec0b5ff3e2ac9bafc99e6a9a7dc3547996c5c816922c"
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "rand_xoshiro"
|
||||||
|
version = "0.6.0"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "6f97cdb2a36ed4183de61b2f824cc45c9f1037f28afe0a322e9fff4c108b5aaa"
|
||||||
|
dependencies = [
|
||||||
|
"rand_core",
|
||||||
|
]
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "redox_syscall"
|
||||||
|
version = "0.4.1"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "4722d768eff46b75989dd134e5c353f0d6296e5aaa3132e776cbdb56be7731aa"
|
||||||
|
dependencies = [
|
||||||
|
"bitflags",
|
||||||
|
]
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "scopeguard"
|
||||||
|
version = "1.2.0"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "94143f37725109f92c262ed2cf5e59bce7498c01bcc1502d7b9afe439a4e9f49"
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "sized-chunks"
|
||||||
|
version = "0.6.5"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "16d69225bde7a69b235da73377861095455d298f2b970996eec25ddbb42b3d1e"
|
||||||
|
dependencies = [
|
||||||
|
"bitmaps",
|
||||||
|
"typenum",
|
||||||
|
]
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "smallvec"
|
||||||
|
version = "1.11.1"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "942b4a808e05215192e39f4ab80813e599068285906cc91aa64f923db842bd5a"
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "typenum"
|
||||||
|
version = "1.17.0"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "42ff0bf0c66b8238c6f3b578df37d0b7848e55df8577b3f74f92a69acceeb825"
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "version_check"
|
||||||
|
version = "0.9.4"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "49874b5167b65d7193b8aba1567f5c7d93d001cafc34600cee003eda787e483f"
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "windows-targets"
|
||||||
|
version = "0.48.5"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "9a2fa6e2155d7247be68c096456083145c183cbbbc2764150dda45a87197940c"
|
||||||
|
dependencies = [
|
||||||
|
"windows_aarch64_gnullvm",
|
||||||
|
"windows_aarch64_msvc",
|
||||||
|
"windows_i686_gnu",
|
||||||
|
"windows_i686_msvc",
|
||||||
|
"windows_x86_64_gnu",
|
||||||
|
"windows_x86_64_gnullvm",
|
||||||
|
"windows_x86_64_msvc",
|
||||||
|
]
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "windows_aarch64_gnullvm"
|
||||||
|
version = "0.48.5"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "2b38e32f0abccf9987a4e3079dfb67dcd799fb61361e53e2882c3cbaf0d905d8"
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "windows_aarch64_msvc"
|
||||||
|
version = "0.48.5"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "dc35310971f3b2dbbf3f0690a219f40e2d9afcf64f9ab7cc1be722937c26b4bc"
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "windows_i686_gnu"
|
||||||
|
version = "0.48.5"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "a75915e7def60c94dcef72200b9a8e58e5091744960da64ec734a6c6e9b3743e"
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "windows_i686_msvc"
|
||||||
|
version = "0.48.5"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "8f55c233f70c4b27f66c523580f78f1004e8b5a8b659e05a4eb49d4166cca406"
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "windows_x86_64_gnu"
|
||||||
|
version = "0.48.5"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "53d40abd2583d23e4718fddf1ebec84dbff8381c07cae67ff7768bbf19c6718e"
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "windows_x86_64_gnullvm"
|
||||||
|
version = "0.48.5"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "0b7b52767868a23d5bab768e390dc5f5c55825b6d30b86c844ff2dc7414044cc"
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "windows_x86_64_msvc"
|
||||||
|
version = "0.48.5"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "ed94fce61571a4006852b7389a063ab983c02eb1bb37b47f8272ce92d06d9538"
|
||||||
12
bidir/Cargo.toml
Normal file
12
bidir/Cargo.toml
Normal file
|
|
@ -0,0 +1,12 @@
|
||||||
|
[package]
|
||||||
|
name = "bidir"
|
||||||
|
version = "0.1.0"
|
||||||
|
edition = "2021"
|
||||||
|
|
||||||
|
# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
|
||||||
|
|
||||||
|
[dependencies]
|
||||||
|
anyhow = "1.0.75"
|
||||||
|
im = "15.1.0"
|
||||||
|
lazy_static = "1.4.0"
|
||||||
|
parking_lot = "0.12.1"
|
||||||
|
|
@ -1,57 +0,0 @@
|
||||||
import { isTypeInContext } from "./contexts";
|
|
||||||
import { ContextEntry, Term, Type } from "./data";
|
|
||||||
|
|
||||||
function check(
|
|
||||||
ctx: ContextEntry[],
|
|
||||||
term: Term,
|
|
||||||
type: Type
|
|
||||||
): [boolean, ContextEntry[]] {
|
|
||||||
switch (term.kind) {
|
|
||||||
case "var":
|
|
||||||
break;
|
|
||||||
case "unit":
|
|
||||||
return [type.kind === "unit", ctx];
|
|
||||||
case "lambda": {
|
|
||||||
// Get A and B first
|
|
||||||
if (type.kind !== "arrow") return [false, ctx];
|
|
||||||
const { input: A, output: B } = type;
|
|
||||||
}
|
|
||||||
case "app":
|
|
||||||
break;
|
|
||||||
case "annot":
|
|
||||||
break;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
function synthesize(ctx: ContextEntry[], term: Term): [Type, ContextEntry[]] {
|
|
||||||
switch (term.kind) {
|
|
||||||
case "var": {
|
|
||||||
const res = lookupTypeVariable(ctx, term.name);
|
|
||||||
if (!res) throw new Error("wtf?");
|
|
||||||
return [res, ctx];
|
|
||||||
}
|
|
||||||
case "unit":
|
|
||||||
return [{ kind: "unit" }, ctx];
|
|
||||||
case "lambda": {
|
|
||||||
}
|
|
||||||
case "app":
|
|
||||||
break;
|
|
||||||
case "annot": {
|
|
||||||
// Require that the type exists
|
|
||||||
if (!isTypeInContext(term.type, ctx))
|
|
||||||
throw new Error("type doesn't exist");
|
|
||||||
|
|
||||||
// Require that the term checks against the type
|
|
||||||
const [result, outputCtx] = check(ctx, term.term, term.type);
|
|
||||||
if (!result) throw new Error("invalid annotation: term doesn't check");
|
|
||||||
|
|
||||||
return [term.type, outputCtx];
|
|
||||||
}
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
function synthesizeApp(
|
|
||||||
ctx: ContextEntry[],
|
|
||||||
funcType: Type,
|
|
||||||
term: Term
|
|
||||||
): [Type, ContextEntry[]] {}
|
|
||||||
|
|
@ -1,18 +0,0 @@
|
||||||
// Helper functions for dealing with contexts
|
|
||||||
|
|
||||||
import { ContextEntry, Type } from "./data";
|
|
||||||
import { isEqual } from "lodash";
|
|
||||||
|
|
||||||
/** Γ |- A (is the given type in this context?) */
|
|
||||||
export function isTypeInContext(type: Type, ctx: ContextEntry[]): boolean {
|
|
||||||
for (const entry of ctx) {
|
|
||||||
switch (entry.kind) {
|
|
||||||
case "termAnnot":
|
|
||||||
if (isEqual(entry.type, type)) return true;
|
|
||||||
break;
|
|
||||||
default:
|
|
||||||
continue;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
return false;
|
|
||||||
}
|
|
||||||
|
|
@ -1,42 +0,0 @@
|
||||||
/**
|
|
||||||
* Terms e ::= x | () | λx. e | e e | (e : A)
|
|
||||||
* Types A, B, C ::= 1 | α | ^α | ∀α. A | A → B
|
|
||||||
* Monotypes τ, σ ::= 1 | α | ^α | τ → σ
|
|
||||||
* Contexts Γ, ∆, Θ ::= · | Γ, α | Γ, x : A
|
|
||||||
* | Γ, ^α | Γ, ^α = τ | Γ, I^α
|
|
||||||
* Complete Contexts Ω ::= · | Ω, α | Ω, x : A
|
|
||||||
* | Ω, ^α = τ | Ω, I^
|
|
||||||
*/
|
|
||||||
|
|
||||||
export type Term =
|
|
||||||
| { kind: "var"; name: string }
|
|
||||||
| { kind: "unit" }
|
|
||||||
| { kind: "lambda"; name: string; body: Term }
|
|
||||||
| { kind: "app"; func: Term; arg: Term }
|
|
||||||
| { kind: "annot"; term: Term; type: Type };
|
|
||||||
|
|
||||||
export type Type =
|
|
||||||
| { kind: "unit" }
|
|
||||||
| { kind: "var"; name: string }
|
|
||||||
| { kind: "existential"; name: string }
|
|
||||||
| { kind: "poly"; name: string; type: Type }
|
|
||||||
| { kind: "arrow"; input: Type; output: Type };
|
|
||||||
|
|
||||||
export type Monotype =
|
|
||||||
| { kind: "unit" }
|
|
||||||
| { kind: "var"; name: string }
|
|
||||||
| { kind: "existential"; name: string }
|
|
||||||
| { kind: "arrow"; input: Monotype; output: Monotype };
|
|
||||||
|
|
||||||
export type ContextEntry =
|
|
||||||
| { kind: "typeVar"; name: string }
|
|
||||||
| { kind: "termAnnot"; name: string; type: Type }
|
|
||||||
| { kind: "existentialVar"; name: string }
|
|
||||||
| { kind: "existentialSolved"; name: string; type: Monotype }
|
|
||||||
| { kind: "marker"; name: string };
|
|
||||||
|
|
||||||
export type CompleteContextEntry =
|
|
||||||
| { kind: "typeVar"; name: string }
|
|
||||||
| { kind: "termAnnot"; name: string; type: Type }
|
|
||||||
| { kind: "existentialSolved"; name: string; type: Monotype }
|
|
||||||
| { kind: "marker"; name: string };
|
|
||||||
134
bidir/src/bidir.rs
Normal file
134
bidir/src/bidir.rs
Normal file
|
|
@ -0,0 +1,134 @@
|
||||||
|
use anyhow::{bail, Result};
|
||||||
|
|
||||||
|
use crate::{
|
||||||
|
data::{ctx_lookup_type, Context, ContextEntry, Term, Type},
|
||||||
|
gensym::gensym_prefix,
|
||||||
|
};
|
||||||
|
|
||||||
|
// Figure 8. Applying a context, as a substitution, to a type
|
||||||
|
|
||||||
|
pub fn app_ctx(ctx: &Context, ty: &Type) -> Type {
|
||||||
|
match ty {
|
||||||
|
Type::Existential(_) => todo!(),
|
||||||
|
Type::Polytype(_, _) => todo!(),
|
||||||
|
Type::Arrow(a, b) => Type::Arrow(Box::new(app_ctx(ctx, a)), Box::new(app_ctx(ctx, b))),
|
||||||
|
_ => ty.clone(),
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
// Figure 9. Algorithmic subtyping
|
||||||
|
|
||||||
|
/// Under input context Γ , type A is a subtype of B, with output context ∆
|
||||||
|
pub fn subtype(ctx: &Context, a: &Type, b: &Type) -> Result<Context> {
|
||||||
|
println!("subtype(ctx = {ctx:?}, a = {a:?}, b = {b:?})");
|
||||||
|
match (a, b) {
|
||||||
|
// <:Unit rule
|
||||||
|
(Type::Unit, Type::Unit) => Ok(ctx.clone()),
|
||||||
|
|
||||||
|
// <:Var rule
|
||||||
|
(Type::Var(x), Type::Var(y)) if x == y => {
|
||||||
|
// Ensure that the name exists in the context
|
||||||
|
if !ctx.iter().any(|entry| match entry {
|
||||||
|
ContextEntry::ExistentialVar(z) if x == z => true,
|
||||||
|
_ => false,
|
||||||
|
}) {
|
||||||
|
bail!("name {x} not in context");
|
||||||
|
}
|
||||||
|
|
||||||
|
Ok(ctx.clone())
|
||||||
|
}
|
||||||
|
|
||||||
|
(Type::Existential(_), Type::Unit) => todo!(),
|
||||||
|
(Type::Existential(_), Type::Var(_)) => todo!(),
|
||||||
|
(Type::Existential(_), Type::Existential(_)) => todo!(),
|
||||||
|
(Type::Existential(_), Type::Polytype(_, _)) => todo!(),
|
||||||
|
(Type::Existential(_), Type::Arrow(_, _)) => todo!(),
|
||||||
|
(Type::Polytype(_, _), Type::Unit) => todo!(),
|
||||||
|
(Type::Polytype(_, _), Type::Var(_)) => todo!(),
|
||||||
|
(Type::Polytype(_, _), Type::Existential(_)) => todo!(),
|
||||||
|
(Type::Polytype(_, _), Type::Polytype(_, _)) => todo!(),
|
||||||
|
(Type::Polytype(_, _), Type::Arrow(_, _)) => todo!(),
|
||||||
|
(Type::Arrow(_, _), Type::Unit) => todo!(),
|
||||||
|
(Type::Arrow(_, _), Type::Var(_)) => todo!(),
|
||||||
|
(Type::Arrow(_, _), Type::Existential(_)) => todo!(),
|
||||||
|
(Type::Arrow(_, _), Type::Polytype(_, _)) => todo!(),
|
||||||
|
(Type::Arrow(_, _), Type::Arrow(_, _)) => todo!(),
|
||||||
|
|
||||||
|
_ => bail!("subtyping relation failed"),
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
// Figure 10. Instantiation
|
||||||
|
|
||||||
|
// Figure 11. Algorithmic typing
|
||||||
|
|
||||||
|
pub fn typecheck(ctx: &Context, term: &Term, ty: &Type) -> Result<Context> {
|
||||||
|
println!("typecheck(ctx = {ctx:?}, term = {term:?}, ty = {ty:?})");
|
||||||
|
match (term, ty) {
|
||||||
|
// 1I rule
|
||||||
|
(Term::Unit, Type::Unit) => Ok(ctx.clone()),
|
||||||
|
|
||||||
|
// ∀I rule
|
||||||
|
(e, Type::Polytype(x, tyA)) => todo!(),
|
||||||
|
|
||||||
|
// →I rule
|
||||||
|
(Term::Lam(x, e), Type::Arrow(ty_a, ty_b)) => {
|
||||||
|
let mut aug_ctx = ctx.clone();
|
||||||
|
todo!()
|
||||||
|
}
|
||||||
|
|
||||||
|
// Sub rule
|
||||||
|
(term, ty) => {
|
||||||
|
let (ty_a, ctx_theta) = synthesize(ctx, term)?;
|
||||||
|
let a = app_ctx(&ctx_theta, &ty_a);
|
||||||
|
let b = app_ctx(&ctx_theta, ty);
|
||||||
|
let ctx_delta = subtype(&ctx_theta, &a, &b)?;
|
||||||
|
Ok(ctx_delta)
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
pub fn synthesize(ctx: &Context, term: &Term) -> Result<(Type, Context)> {
|
||||||
|
println!("synthesize(ctx = {ctx:?}, term = {term:?}");
|
||||||
|
match term {
|
||||||
|
// Var rule
|
||||||
|
Term::Var(name) => {
|
||||||
|
let ty = match ctx_lookup_type(ctx, name) {
|
||||||
|
Some(v) => v,
|
||||||
|
None => bail!("could not find name {name}"),
|
||||||
|
};
|
||||||
|
Ok((ty, ctx.clone()))
|
||||||
|
}
|
||||||
|
|
||||||
|
// 1I⇒ rule
|
||||||
|
Term::Unit => Ok((Type::Unit, ctx.clone())),
|
||||||
|
|
||||||
|
// Anno rule
|
||||||
|
Term::Annot(_, _) => todo!(),
|
||||||
|
|
||||||
|
// →I⇒ rule
|
||||||
|
Term::Lam(x, e) => {
|
||||||
|
let mut aug_ctx = ctx.clone();
|
||||||
|
let ex_a = gensym_prefix("ex");
|
||||||
|
let ex_b = gensym_prefix("ex");
|
||||||
|
aug_ctx.push_back(ContextEntry::TypeVar(ex_a.clone()));
|
||||||
|
aug_ctx.push_back(ContextEntry::TypeVar(ex_b.clone()));
|
||||||
|
aug_ctx.push_back(ContextEntry::TermAnnot(x.clone(), Type::Var(ex_a.clone())));
|
||||||
|
|
||||||
|
let res = typecheck(&aug_ctx, &e, &Type::Var(ex_b.clone()));
|
||||||
|
Ok((
|
||||||
|
Type::Arrow(
|
||||||
|
Box::new(Type::Existential(ex_a)),
|
||||||
|
Box::new(Type::Existential(ex_b)),
|
||||||
|
),
|
||||||
|
ctx.clone(),
|
||||||
|
))
|
||||||
|
}
|
||||||
|
|
||||||
|
// →E rule
|
||||||
|
Term::App(e1, e2) => {
|
||||||
|
let (tyA, out_ctx) = synthesize(ctx, e1)?;
|
||||||
|
todo!()
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
53
bidir/src/data.rs
Normal file
53
bidir/src/data.rs
Normal file
|
|
@ -0,0 +1,53 @@
|
||||||
|
use im::Vector;
|
||||||
|
|
||||||
|
#[derive(Debug, Clone)]
|
||||||
|
pub enum Term {
|
||||||
|
Unit,
|
||||||
|
Var(String),
|
||||||
|
Lam(String, Box<Term>),
|
||||||
|
App(Box<Term>, Box<Term>),
|
||||||
|
Annot(Box<Term>, Type),
|
||||||
|
}
|
||||||
|
|
||||||
|
#[derive(Debug, Clone)]
|
||||||
|
pub enum Type {
|
||||||
|
Unit,
|
||||||
|
Var(String),
|
||||||
|
Existential(String),
|
||||||
|
Polytype(String, Box<Type>),
|
||||||
|
Arrow(Box<Type>, Box<Type>),
|
||||||
|
}
|
||||||
|
|
||||||
|
#[derive(Debug, Clone)]
|
||||||
|
pub enum Monotype {
|
||||||
|
Unit,
|
||||||
|
Var(String),
|
||||||
|
Existential(String),
|
||||||
|
Arrow(Box<Monotype>, Box<Monotype>),
|
||||||
|
}
|
||||||
|
|
||||||
|
pub type Context = Vector<ContextEntry>;
|
||||||
|
|
||||||
|
#[derive(Debug, Clone)]
|
||||||
|
pub enum ContextEntry {
|
||||||
|
TypeVar(String),
|
||||||
|
TermAnnot(String, Type),
|
||||||
|
ExistentialVar(String),
|
||||||
|
ExistentialSolved(String, Monotype),
|
||||||
|
Marker(String),
|
||||||
|
}
|
||||||
|
|
||||||
|
#[derive(Debug, Clone)]
|
||||||
|
pub enum CompleteContextEntry {
|
||||||
|
TypeVar(String),
|
||||||
|
TermAnnot(String, Type),
|
||||||
|
ExistentialSolved(String, Monotype),
|
||||||
|
Marker(String),
|
||||||
|
}
|
||||||
|
|
||||||
|
pub fn ctx_lookup_type(ctx: &Context, name: impl AsRef<str>) -> Option<Type> {
|
||||||
|
ctx.iter().find_map(|entry| match entry {
|
||||||
|
ContextEntry::TermAnnot(n, t) if n == name.as_ref() => Some(t.clone()),
|
||||||
|
_ => None,
|
||||||
|
})
|
||||||
|
}
|
||||||
18
bidir/src/gensym.rs
Normal file
18
bidir/src/gensym.rs
Normal file
|
|
@ -0,0 +1,18 @@
|
||||||
|
use lazy_static::lazy_static;
|
||||||
|
use parking_lot::Mutex;
|
||||||
|
|
||||||
|
lazy_static! {
|
||||||
|
static ref CTR: Mutex<usize> = Mutex::new(0);
|
||||||
|
}
|
||||||
|
|
||||||
|
pub fn gensym() -> String {
|
||||||
|
gensym_prefix("var")
|
||||||
|
}
|
||||||
|
|
||||||
|
pub fn gensym_prefix(prefix: impl AsRef<str>) -> String {
|
||||||
|
let mut g = CTR.lock();
|
||||||
|
let ctr = *g;
|
||||||
|
*g += 1;
|
||||||
|
drop(g);
|
||||||
|
format!("{}{}", prefix.as_ref(), ctr)
|
||||||
|
}
|
||||||
6
bidir/src/lib.rs
Normal file
6
bidir/src/lib.rs
Normal file
|
|
@ -0,0 +1,6 @@
|
||||||
|
mod bidir;
|
||||||
|
mod data;
|
||||||
|
|
||||||
|
mod gensym;
|
||||||
|
#[cfg(test)]
|
||||||
|
mod tests;
|
||||||
13
bidir/src/tests.rs
Normal file
13
bidir/src/tests.rs
Normal file
|
|
@ -0,0 +1,13 @@
|
||||||
|
use anyhow::{bail, Result};
|
||||||
|
use im::Vector;
|
||||||
|
|
||||||
|
use crate::{bidir::synthesize, data::Term};
|
||||||
|
|
||||||
|
#[test]
|
||||||
|
fn test_id() -> Result<()> {
|
||||||
|
let id = Term::Lam("x".to_owned(), Box::new(Term::Var("x".to_owned())));
|
||||||
|
let ctx = Vector::new();
|
||||||
|
let (ty, out_ctx) = synthesize(&ctx, &id)?;
|
||||||
|
// bail!("Output: {ty:?} in context {out_ctx:?}");
|
||||||
|
Ok(())
|
||||||
|
}
|
||||||
660
bidir/tarpaulin-report.html
Normal file
660
bidir/tarpaulin-report.html
Normal file
File diff suppressed because one or more lines are too long
1
rustfmt.toml
Normal file
1
rustfmt.toml
Normal file
|
|
@ -0,0 +1 @@
|
||||||
|
tab_spaces = 2
|
||||||
Loading…
Reference in a new issue