forked from M-Labs/nac3
tmp
This commit is contained in:
parent
84c980fed3
commit
e554737b68
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@ -1,5 +1,7 @@
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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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[[package]]
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name = "ahash"
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version = "0.7.4"
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@ -73,6 +75,12 @@ version = "1.0.68"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "4a72c244c1ff497a746a7e1fb3d14bd08420ecda70c8f25c7112f2781652d787"
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||||
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||||
[[package]]
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name = "cfg-if"
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version = "0.1.10"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "4785bdd1c96b2a846b2bd7cc02e86b6b3dbf14e7e53446c4f54c92a361040822"
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||||
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[[package]]
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name = "cfg-if"
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version = "1.0.0"
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@ -107,7 +115,7 @@ version = "2.0.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "b98cf8ebf19c3d1b223e151f99a4f9f0690dca41414773390fc824184ac833e1"
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dependencies = [
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"cfg-if",
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"cfg-if 1.0.0",
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"dirs-sys-next",
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]
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@ -143,13 +151,22 @@ version = "0.2.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "37ab347416e802de484e4d03c7316c48f1ecb56574dfd4a46a80f173ce1de04d"
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||||
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||||
[[package]]
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name = "generational-arena"
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version = "0.2.8"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "8e1d3b771574f62d0548cee0ad9057857e9fc25d7a3335f140c84f6acd0bf601"
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dependencies = [
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"cfg-if 0.1.10",
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]
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[[package]]
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name = "getrandom"
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version = "0.1.16"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "8fc3cb4d91f53b50155bdcfd23f6a4c39ae1969c2ae85982b135750cccaf5fce"
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dependencies = [
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"cfg-if",
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"cfg-if 1.0.0",
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"libc",
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"wasi 0.9.0+wasi-snapshot-preview1",
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]
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@ -160,7 +177,7 @@ version = "0.2.3"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "7fcd999463524c52659517fe2cea98493cfe485d10565e7b0fb07dbba7ad2753"
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dependencies = [
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"cfg-if",
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"cfg-if 1.0.0",
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"libc",
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"wasi 0.10.2+wasi-snapshot-preview1",
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]
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@ -236,7 +253,7 @@ dependencies = [
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[[package]]
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name = "inkwell"
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version = "0.1.0"
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source = "git+https://github.com/TheDan64/inkwell#aa4de1d78471a3d2f0fda1f56801177ddf80f3bf"
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source = "git+https://github.com/TheDan64/inkwell?branch=master#aa4de1d78471a3d2f0fda1f56801177ddf80f3bf"
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dependencies = [
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"either",
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"inkwell_internals",
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@ -250,7 +267,7 @@ dependencies = [
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[[package]]
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name = "inkwell_internals"
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version = "0.3.0"
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source = "git+https://github.com/TheDan64/inkwell#aa4de1d78471a3d2f0fda1f56801177ddf80f3bf"
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source = "git+https://github.com/TheDan64/inkwell?branch=master#aa4de1d78471a3d2f0fda1f56801177ddf80f3bf"
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dependencies = [
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"proc-macro2",
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"quote",
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@ -263,7 +280,7 @@ version = "0.1.9"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "61124eeebbd69b8190558df225adf7e4caafce0d743919e5d6b19652314ec5ec"
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dependencies = [
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"cfg-if",
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"cfg-if 1.0.0",
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]
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[[package]]
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@ -369,7 +386,7 @@ version = "0.4.14"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "51b9bbe6c47d51fc3e1a9b945965946b4c44142ab8792c50835a980d362c2710"
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dependencies = [
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"cfg-if",
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"cfg-if 1.0.0",
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]
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[[package]]
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@ -382,6 +399,8 @@ checksum = "b16bd47d9e329435e309c58469fe0791c2d0d1ba96ec0954152a5ae2b04387dc"
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name = "nac3core"
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version = "0.1.0"
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dependencies = [
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"ena",
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"generational-arena",
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"indoc 1.0.3",
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"inkwell",
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"num-bigint 0.3.2",
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@ -478,7 +497,7 @@ version = "0.8.3"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "fa7a782938e745763fe6907fc6ba86946d72f49fe7e21de074e08128a99fb018"
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dependencies = [
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"cfg-if",
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"cfg-if 1.0.0",
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"instant",
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"libc",
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"redox_syscall",
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@ -729,7 +748,7 @@ checksum = "f497285884f3fcff424ffc933e56d7cbca511def0c9831a7f9b5f6153e3cc89b"
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[[package]]
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name = "rustpython-ast"
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version = "0.1.0"
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source = "git+https://github.com/RustPython/RustPython#bee5794b6e2b777ee343c7277954b73d06b5cb7d"
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source = "git+https://github.com/RustPython/RustPython?branch=master#bee5794b6e2b777ee343c7277954b73d06b5cb7d"
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dependencies = [
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"num-bigint 0.4.0",
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]
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@ -737,7 +756,7 @@ dependencies = [
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[[package]]
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name = "rustpython-parser"
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version = "0.1.2"
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source = "git+https://github.com/RustPython/RustPython#bee5794b6e2b777ee343c7277954b73d06b5cb7d"
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source = "git+https://github.com/RustPython/RustPython?branch=master#bee5794b6e2b777ee343c7277954b73d06b5cb7d"
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dependencies = [
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"ahash",
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"lalrpop",
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@ -10,4 +10,6 @@ num-traits = "0.2"
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inkwell = { git = "https://github.com/TheDan64/inkwell", branch = "master", features = ["llvm10-0"] }
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rustpython-parser = { git = "https://github.com/RustPython/RustPython", branch = "master" }
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indoc = "1.0"
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generational-arena = "0.2"
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ena = "0.14"
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@ -5,6 +5,8 @@ extern crate num_bigint;
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extern crate inkwell;
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extern crate rustpython_parser;
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extern crate indoc;
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extern crate generational_arena;
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extern crate ena;
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mod typecheck;
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@ -1,7 +1,7 @@
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#![allow(dead_code)]
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mod context;
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pub mod location;
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mod magic_methods;
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mod primitives;
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pub mod symbol_resolver;
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// mod context;
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// pub mod location;
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// mod magic_methods;
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// mod primitives;
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// pub mod symbol_resolver;
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pub mod typedef;
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@ -1,64 +1,219 @@
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use ena::unify::{InPlaceUnificationTable, NoError, UnifyKey, UnifyValue};
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use generational_arena::{Arena, Index};
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use std::cell::RefCell;
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use std::collections::HashMap;
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use std::collections::HashSet;
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use std::rc::Rc;
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#[derive(PartialEq, Eq, Copy, Clone, Hash, Debug)]
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pub struct VariableId(pub(crate) usize);
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// Order:
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// TVar
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// |--> TSeq
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// | |--> TTuple
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// | `--> TList
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// |--> TRecord
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// | |--> TObj
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// | `--> TVirtual
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// `--> TCall
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// `--> TFunc
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#[derive(PartialEq, Eq, Copy, Clone, Hash, Debug)]
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pub struct TypeId(pub(crate) usize);
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#[derive(Copy, Clone, PartialEq, Eq, Debug)]
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struct Type(u32);
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#[derive(PartialEq, Eq, Clone, Hash, Debug)]
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pub enum TypeEnum {
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ClassType(TypeId, Vec<Rc<TypeEnum>>),
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TypeVariable(VariableId),
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#[derive(Copy, Clone, Debug, PartialEq, Eq)]
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struct TypeIndex(Index);
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impl UnifyValue for TypeIndex {
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type Error = NoError;
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fn unify_values(_: &Self, value2: &Self) -> Result<Self, Self::Error> {
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// WARN: depends on the implementation details of ena.
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// We do not use this to do unification, instead we perform unification and assign the type
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// by `union_value(key, new_value)`, which set the value as `unify_values(key.value, new_value)`.
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// So, we need to return the right one.
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Ok(*value2)
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}
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}
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pub type Type = Rc<TypeEnum>;
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#[derive(Clone)]
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pub struct BaseDef<'a> {
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pub name: &'a str,
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pub fields: HashMap<&'a str, Type>,
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impl UnifyKey for Type {
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type Value = TypeIndex;
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fn index(&self) -> u32 {
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self.0
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}
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fn from_index(u: u32) -> Self {
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Type(u)
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}
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fn tag() -> &'static str {
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"TypeKey"
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}
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}
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#[derive(Clone)]
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pub struct TypeDef<'a> {
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pub base: BaseDef<'a>,
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pub parents: Vec<TypeId>,
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pub params: Vec<VariableId>,
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type VarMapping = HashMap<u32, Type>;
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struct Call {
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posargs: Vec<Type>,
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kwargs: HashMap<String, Type>,
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ret: Type,
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fn_id: usize,
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}
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#[derive(Clone)]
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pub struct VarDef<'a> {
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pub name: Option<&'a str>,
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pub bound: Vec<Type>,
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struct FuncArg {
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name: String,
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ty: Type,
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is_optional: bool,
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}
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enum TypeEnum {
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TVar {
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// TODO: upper/lower bound
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id: u32,
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},
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TSeq {
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index: HashMap<u32, Type>,
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},
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TTuple {
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index: HashMap<u32, Type>,
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},
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TList {
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ty: Type,
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},
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TRecord {
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fields: HashMap<String, Type>,
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},
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TObj {
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obj_id: usize,
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instantiation: VarMapping,
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},
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TVirtual {
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obj_id: usize,
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instantiation: VarMapping,
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},
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TCall {
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calls: Vec<Call>,
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},
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TFunc {
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args: Vec<FuncArg>,
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ret: Type,
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instantiation: VarMapping,
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},
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}
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impl TypeEnum {
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pub fn get_vars(&self, vars: &mut HashSet<VariableId>) {
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fn get_int(&self) -> i32 {
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match self {
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TypeEnum::TypeVariable(id) => {
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vars.insert(*id);
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}
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TypeEnum::ClassType(_, params) => {
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for t in params.iter() {
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t.get_vars(vars)
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}
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}
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TypeEnum::TVar { .. } => 1,
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TypeEnum::TSeq { .. } => 5,
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TypeEnum::TTuple { .. } => 10,
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TypeEnum::TList { .. } => 15,
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TypeEnum::TRecord { .. } => 7,
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TypeEnum::TObj { .. } => 14,
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TypeEnum::TVirtual { .. } => 21,
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TypeEnum::TCall { .. } => 11,
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TypeEnum::TFunc { .. } => 22,
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}
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}
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pub fn subst(&self, map: &HashMap<VariableId, Type>) -> Type {
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match self {
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TypeEnum::TypeVariable(id) => map
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.get(id)
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.cloned()
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.unwrap_or_else(|| Rc::new(self.clone())),
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TypeEnum::ClassType(id, params) => Rc::new(TypeEnum::ClassType(
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*id,
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params.iter().map(|t| t.subst(map)).collect(),
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)),
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// e.g. List <: Var
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pub fn kind_le(&self, other: &TypeEnum) -> bool {
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let a = self.get_int();
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let b = other.get_int();
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(a % b) == 0
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}
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}
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struct ObjDef {
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name: String,
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fields: HashMap<String, Type>,
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}
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struct Unifier {
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unification_table: RefCell<InPlaceUnificationTable<Type>>,
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type_arena: RefCell<Arena<TypeEnum>>,
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obj_def_table: Vec<ObjDef>,
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}
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impl Unifier {
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fn unify(&self, a: Type, b: Type) {
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let (i_a, i_b) = {
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let mut table = self.unification_table.borrow_mut();
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(table.probe_value(a), table.probe_value(b))
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};
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if i_a == i_b {
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return;
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}
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let arena = self.type_arena.borrow();
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let mut ty_a = arena.get(i_a.0).unwrap();
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let mut ty_b = arena.get(i_b.0).unwrap();
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// simplify our pattern matching...
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if ty_a.kind_le(ty_b) {
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std::mem::swap(&mut ty_a, &mut ty_b);
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}
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// TODO: type variables bound check
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match (ty_a, ty_b) {
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(TypeEnum::TVar { .. }, TypeEnum::TVar { .. }) => {
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self.unification_table.borrow_mut().union(a, b);
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let old = if self.unification_table.borrow_mut().find(a) == a {
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i_b
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} else {
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i_a
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}
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.0;
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self.type_arena.borrow_mut().remove(old);
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}
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(TypeEnum::TVar { .. }, _) => {
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let mut table = self.unification_table.borrow_mut();
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table.union(a, b);
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table.union_value(a, i_b);
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// TODO: occur check...
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self.type_arena.borrow_mut().remove(i_a.0);
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}
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(TypeEnum::TSeq { .. }, TypeEnum::TSeq { .. }) => {
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let is_a = {
|
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let mut table = self.unification_table.borrow_mut();
|
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table.union(a, b);
|
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table.find(a) == a
|
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};
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// fighting with the borrow checker...
|
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// we have to manually drop this before we call borrow_mut
|
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std::mem::drop(arena);
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let (mut new, old) = {
|
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// the mutable arena would be dropped before calling unify later
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let mut arena = self.type_arena.borrow_mut();
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let (ty_a, ty_b) = arena.get2_mut(i_a.0, i_b.0);
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let index1 = if let Some(TypeEnum::TSeq { index }) = ty_a {
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std::mem::take(index)
|
||||
} else {
|
||||
unreachable!()
|
||||
};
|
||||
let index2 = if let Some(TypeEnum::TSeq { index }) = ty_b {
|
||||
std::mem::take(index)
|
||||
} else {
|
||||
unreachable!()
|
||||
};
|
||||
if is_a {
|
||||
arena.remove(i_b.0);
|
||||
(index1, index2)
|
||||
} else {
|
||||
arena.remove(i_a.0);
|
||||
(index2, index1)
|
||||
}
|
||||
};
|
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for (key, value) in old.iter() {
|
||||
if let Some(ty) = new.get(key) {
|
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self.unify(*ty, *value);
|
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} else {
|
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new.insert(*key, *value);
|
||||
}
|
||||
}
|
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// put it back
|
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let index = if is_a { i_a } else { i_b }.0;
|
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if let Some(TypeEnum::TSeq { index }) = self.type_arena.borrow_mut().get_mut(index) {
|
||||
*index = new;
|
||||
} else {
|
||||
unreachable!()
|
||||
}
|
||||
}
|
||||
_ => unimplemented!(),
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
|
|||
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