forked from M-Labs/nac3
cleanup
This commit is contained in:
parent
e95bfe1d31
commit
0296844d5f
@ -9,10 +9,10 @@ num-bigint = "0.3"
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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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ena = "0.14"
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itertools = "0.10.1"
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[dev-dependencies]
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test-case = "1.2.0"
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indoc = "1.0"
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@ -1,12 +1,4 @@
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#![warn(clippy::all)]
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#![allow(clippy::clone_double_ref)]
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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 ena;
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extern crate itertools;
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mod typecheck;
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@ -2,6 +2,5 @@
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pub mod location;
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mod magic_methods;
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pub mod symbol_resolver;
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mod test_typedef;
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pub mod typedef;
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pub mod type_inferencer;
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@ -1,272 +0,0 @@
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#[cfg(test)]
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mod test {
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use super::super::typedef::*;
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use itertools::Itertools;
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use std::collections::HashMap;
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use test_case::test_case;
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struct TestEnvironment {
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pub unifier: Unifier,
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type_mapping: HashMap<String, Type>,
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}
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impl TestEnvironment {
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fn new() -> TestEnvironment {
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let mut unifier = Unifier::new();
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let mut type_mapping = HashMap::new();
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type_mapping.insert(
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"int".into(),
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unifier.add_ty(TypeEnum::TObj {
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obj_id: 0,
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fields: HashMap::new(),
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params: HashMap::new(),
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}),
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);
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type_mapping.insert(
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"float".into(),
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unifier.add_ty(TypeEnum::TObj {
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obj_id: 1,
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fields: HashMap::new(),
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params: HashMap::new(),
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}),
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);
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type_mapping.insert(
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"bool".into(),
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unifier.add_ty(TypeEnum::TObj {
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obj_id: 2,
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fields: HashMap::new(),
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params: HashMap::new(),
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}),
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);
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let (v0, id) = unifier.get_fresh_var();
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type_mapping.insert(
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"Foo".into(),
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unifier.add_ty(TypeEnum::TObj {
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obj_id: 3,
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fields: [("a".into(), v0)].iter().cloned().collect(),
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params: [(id, v0)].iter().cloned().collect(),
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}),
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);
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TestEnvironment {
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unifier,
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type_mapping,
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}
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}
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fn parse(&mut self, typ: &str, mapping: &Mapping<String>) -> Type {
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let result = self.internal_parse(typ, mapping);
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assert!(result.1.is_empty());
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result.0
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}
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fn internal_parse<'a, 'b>(
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&'a mut self,
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typ: &'b str,
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mapping: &Mapping<String>,
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) -> (Type, &'b str) {
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// for testing only, so we can just panic when the input is malformed
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let end = typ
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.find(|c| ['[', ',', ']', '='].contains(&c))
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.unwrap_or_else(|| typ.len());
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match &typ[..end] {
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"Tuple" => {
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let mut s = &typ[end..];
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assert!(&s[0..1] == "[");
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let mut ty = Vec::new();
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while &s[0..1] != "]" {
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let result = self.internal_parse(&s[1..], mapping);
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ty.push(result.0);
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s = result.1;
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}
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(self.unifier.add_ty(TypeEnum::TTuple { ty }), &s[1..])
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}
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"List" => {
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assert!(&typ[end..end + 1] == "[");
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let (ty, s) = self.internal_parse(&typ[end + 1..], mapping);
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assert!(&s[0..1] == "]");
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(self.unifier.add_ty(TypeEnum::TList { ty }), &s[1..])
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}
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"Record" => {
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let mut s = &typ[end..];
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assert!(&s[0..1] == "[");
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let mut fields = HashMap::new();
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while &s[0..1] != "]" {
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let eq = s.find('=').unwrap();
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let key = s[1..eq].to_string();
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let result = self.internal_parse(&s[eq + 1..], mapping);
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fields.insert(key, result.0);
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s = result.1;
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}
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(self.unifier.add_ty(TypeEnum::TRecord { fields }), &s[1..])
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}
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x => {
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let mut s = &typ[end..];
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let ty = mapping.get(x).cloned().unwrap_or_else(|| {
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// mapping should be type variables, type_mapping should be concrete types
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// we should not resolve the type of type variables.
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let mut ty = *self.type_mapping.get(x).unwrap();
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let te = self.unifier.get_ty(ty);
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if let TypeEnum::TObj { params, .. } = &*te.as_ref().borrow() {
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if !params.is_empty() {
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assert!(&s[0..1] == "[");
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let mut p = Vec::new();
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while &s[0..1] != "]" {
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let result = self.internal_parse(&s[1..], mapping);
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p.push(result.0);
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s = result.1;
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}
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s = &s[1..];
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ty = self
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.unifier
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.subst(ty, ¶ms.keys().cloned().zip(p.into_iter()).collect())
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.unwrap_or(ty);
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}
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}
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ty
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});
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(ty, s)
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}
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}
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}
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}
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#[test_case(2,
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&[("v1", "v2"), ("v2", "float")],
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&[("v1", "float"), ("v2", "float")]
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; "simple variable"
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)]
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#[test_case(2,
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&[("v1", "List[v2]"), ("v1", "List[float]")],
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&[("v1", "List[float]"), ("v2", "float")]
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; "list element"
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)]
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#[test_case(3,
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&[
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("v1", "Record[a=v3,b=v3]"),
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("v2", "Record[b=float,c=v3]"),
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("v1", "v2")
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],
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&[
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("v1", "Record[a=float,b=float,c=float]"),
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("v2", "Record[a=float,b=float,c=float]"),
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("v3", "float")
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]
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; "record merge"
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)]
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#[test_case(3,
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&[
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("v1", "Record[a=float]"),
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("v2", "Foo[v3]"),
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("v1", "v2")
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],
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&[
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("v1", "Foo[float]"),
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("v3", "float")
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]
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; "record obj merge"
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)]
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/// Test cases for valid unifications.
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fn test_unify(
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variable_count: u32,
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unify_pairs: &[(&'static str, &'static str)],
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verify_pairs: &[(&'static str, &'static str)],
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) {
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let unify_count = unify_pairs.len();
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// test all permutations...
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for perm in unify_pairs.iter().permutations(unify_count) {
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let mut env = TestEnvironment::new();
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let mut mapping = HashMap::new();
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for i in 1..=variable_count {
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let v = env.unifier.get_fresh_var();
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mapping.insert(format!("v{}", i), v.0);
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}
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// unification may have side effect when we do type resolution, so freeze the types
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// before doing unification.
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let mut pairs = Vec::new();
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for (a, b) in perm.iter() {
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let t1 = env.parse(a, &mapping);
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let t2 = env.parse(b, &mapping);
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pairs.push((t1, t2));
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}
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for (t1, t2) in pairs {
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env.unifier.unify(t1, t2).unwrap();
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}
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for (a, b) in verify_pairs.iter() {
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let t1 = env.parse(a, &mapping);
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let t2 = env.parse(b, &mapping);
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assert!(env.unifier.eq(t1, t2));
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}
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}
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}
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#[test_case(2,
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&[
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("v1", "Tuple[int]"),
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("v2", "List[int]"),
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],
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(("v1", "v2"), "Cannot unify TList with TTuple")
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; "type mismatch"
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)]
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#[test_case(2,
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&[
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("v1", "Tuple[int]"),
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("v2", "Tuple[float]"),
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],
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(("v1", "v2"), "Cannot unify objects with ID 0 and 1")
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; "tuple parameter mismatch"
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)]
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#[test_case(2,
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&[
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("v1", "Tuple[int,int]"),
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("v2", "Tuple[int]"),
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],
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(("v1", "v2"), "Cannot unify tuples with length 2 and 1")
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; "tuple length mismatch"
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)]
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#[test_case(3,
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&[
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("v1", "Record[a=float,b=int]"),
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("v2", "Foo[v3]"),
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],
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(("v1", "v2"), "No such attribute b")
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; "record obj merge"
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)]
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#[test_case(2,
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&[
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("v1", "List[v2]"),
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],
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(("v1", "v2"), "Recursive type is prohibited.")
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; "recursive type for lists"
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)]
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/// Test cases for invalid unifications.
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fn test_invalid_unification(
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variable_count: u32,
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unify_pairs: &[(&'static str, &'static str)],
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errornous_pair: ((&'static str, &'static str), &'static str),
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) {
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let mut env = TestEnvironment::new();
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let mut mapping = HashMap::new();
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for i in 1..=variable_count {
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let v = env.unifier.get_fresh_var();
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mapping.insert(format!("v{}", i), v.0);
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}
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// unification may have side effect when we do type resolution, so freeze the types
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// before doing unification.
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let mut pairs = Vec::new();
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for (a, b) in unify_pairs.iter() {
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let t1 = env.parse(a, &mapping);
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let t2 = env.parse(b, &mapping);
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pairs.push((t1, t2));
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}
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let (t1, t2) = (
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env.parse(errornous_pair.0 .0, &mapping),
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env.parse(errornous_pair.0 .1, &mapping),
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);
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for (a, b) in pairs {
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env.unifier.unify(a, b).unwrap();
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}
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assert_eq!(env.unifier.unify(t1, t2), Err(errornous_pair.1.to_string()));
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}
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}
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@ -6,6 +6,9 @@ use std::iter::once;
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use std::ops::Deref;
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use std::rc::Rc;
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#[cfg(test)]
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mod test_typedef;
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#[derive(Copy, Clone, PartialEq, Eq, Debug)]
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/// Handle for a type, implementated as a key in the unification table.
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pub struct Type(u32);
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269
nac3core/src/typecheck/typedef/test_typedef.rs
Normal file
269
nac3core/src/typecheck/typedef/test_typedef.rs
Normal file
@ -0,0 +1,269 @@
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use super::super::typedef::*;
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use itertools::Itertools;
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use std::collections::HashMap;
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use test_case::test_case;
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struct TestEnvironment {
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pub unifier: Unifier,
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type_mapping: HashMap<String, Type>,
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}
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impl TestEnvironment {
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fn new() -> TestEnvironment {
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let mut unifier = Unifier::new();
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let mut type_mapping = HashMap::new();
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type_mapping.insert(
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"int".into(),
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unifier.add_ty(TypeEnum::TObj {
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obj_id: 0,
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fields: HashMap::new(),
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params: HashMap::new(),
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}),
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);
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type_mapping.insert(
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"float".into(),
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unifier.add_ty(TypeEnum::TObj {
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obj_id: 1,
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fields: HashMap::new(),
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params: HashMap::new(),
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}),
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);
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type_mapping.insert(
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"bool".into(),
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unifier.add_ty(TypeEnum::TObj {
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obj_id: 2,
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fields: HashMap::new(),
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params: HashMap::new(),
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}),
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);
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let (v0, id) = unifier.get_fresh_var();
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type_mapping.insert(
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"Foo".into(),
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unifier.add_ty(TypeEnum::TObj {
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obj_id: 3,
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fields: [("a".into(), v0)].iter().cloned().collect(),
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params: [(id, v0)].iter().cloned().collect(),
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}),
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);
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TestEnvironment {
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unifier,
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type_mapping,
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}
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}
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fn parse(&mut self, typ: &str, mapping: &Mapping<String>) -> Type {
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let result = self.internal_parse(typ, mapping);
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assert!(result.1.is_empty());
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result.0
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}
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fn internal_parse<'a, 'b>(
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&'a mut self,
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typ: &'b str,
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mapping: &Mapping<String>,
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) -> (Type, &'b str) {
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// for testing only, so we can just panic when the input is malformed
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let end = typ
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.find(|c| ['[', ',', ']', '='].contains(&c))
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.unwrap_or_else(|| typ.len());
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match &typ[..end] {
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"Tuple" => {
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let mut s = &typ[end..];
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assert!(&s[0..1] == "[");
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let mut ty = Vec::new();
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while &s[0..1] != "]" {
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let result = self.internal_parse(&s[1..], mapping);
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ty.push(result.0);
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s = result.1;
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}
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(self.unifier.add_ty(TypeEnum::TTuple { ty }), &s[1..])
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}
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"List" => {
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assert!(&typ[end..end + 1] == "[");
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let (ty, s) = self.internal_parse(&typ[end + 1..], mapping);
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assert!(&s[0..1] == "]");
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(self.unifier.add_ty(TypeEnum::TList { ty }), &s[1..])
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}
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"Record" => {
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let mut s = &typ[end..];
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assert!(&s[0..1] == "[");
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let mut fields = HashMap::new();
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while &s[0..1] != "]" {
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let eq = s.find('=').unwrap();
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let key = s[1..eq].to_string();
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let result = self.internal_parse(&s[eq + 1..], mapping);
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fields.insert(key, result.0);
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s = result.1;
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}
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(self.unifier.add_ty(TypeEnum::TRecord { fields }), &s[1..])
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}
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x => {
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let mut s = &typ[end..];
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let ty = mapping.get(x).cloned().unwrap_or_else(|| {
|
||||
// mapping should be type variables, type_mapping should be concrete types
|
||||
// we should not resolve the type of type variables.
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let mut ty = *self.type_mapping.get(x).unwrap();
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let te = self.unifier.get_ty(ty);
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if let TypeEnum::TObj { params, .. } = &*te.as_ref().borrow() {
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if !params.is_empty() {
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assert!(&s[0..1] == "[");
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||||
let mut p = Vec::new();
|
||||
while &s[0..1] != "]" {
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let result = self.internal_parse(&s[1..], mapping);
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p.push(result.0);
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||||
s = result.1;
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||||
}
|
||||
s = &s[1..];
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ty = self
|
||||
.unifier
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.subst(ty, ¶ms.keys().cloned().zip(p.into_iter()).collect())
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.unwrap_or(ty);
|
||||
}
|
||||
}
|
||||
ty
|
||||
});
|
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(ty, s)
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||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
#[test_case(2,
|
||||
&[("v1", "v2"), ("v2", "float")],
|
||||
&[("v1", "float"), ("v2", "float")]
|
||||
; "simple variable"
|
||||
)]
|
||||
#[test_case(2,
|
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&[("v1", "List[v2]"), ("v1", "List[float]")],
|
||||
&[("v1", "List[float]"), ("v2", "float")]
|
||||
; "list element"
|
||||
)]
|
||||
#[test_case(3,
|
||||
&[
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("v1", "Record[a=v3,b=v3]"),
|
||||
("v2", "Record[b=float,c=v3]"),
|
||||
("v1", "v2")
|
||||
],
|
||||
&[
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||||
("v1", "Record[a=float,b=float,c=float]"),
|
||||
("v2", "Record[a=float,b=float,c=float]"),
|
||||
("v3", "float")
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||||
]
|
||||
; "record merge"
|
||||
)]
|
||||
#[test_case(3,
|
||||
&[
|
||||
("v1", "Record[a=float]"),
|
||||
("v2", "Foo[v3]"),
|
||||
("v1", "v2")
|
||||
],
|
||||
&[
|
||||
("v1", "Foo[float]"),
|
||||
("v3", "float")
|
||||
]
|
||||
; "record obj merge"
|
||||
)]
|
||||
/// Test cases for valid unifications.
|
||||
fn test_unify(
|
||||
variable_count: u32,
|
||||
unify_pairs: &[(&'static str, &'static str)],
|
||||
verify_pairs: &[(&'static str, &'static str)],
|
||||
) {
|
||||
let unify_count = unify_pairs.len();
|
||||
// test all permutations...
|
||||
for perm in unify_pairs.iter().permutations(unify_count) {
|
||||
let mut env = TestEnvironment::new();
|
||||
let mut mapping = HashMap::new();
|
||||
for i in 1..=variable_count {
|
||||
let v = env.unifier.get_fresh_var();
|
||||
mapping.insert(format!("v{}", i), v.0);
|
||||
}
|
||||
// unification may have side effect when we do type resolution, so freeze the types
|
||||
// before doing unification.
|
||||
let mut pairs = Vec::new();
|
||||
for (a, b) in perm.iter() {
|
||||
let t1 = env.parse(a, &mapping);
|
||||
let t2 = env.parse(b, &mapping);
|
||||
pairs.push((t1, t2));
|
||||
}
|
||||
for (t1, t2) in pairs {
|
||||
env.unifier.unify(t1, t2).unwrap();
|
||||
}
|
||||
for (a, b) in verify_pairs.iter() {
|
||||
let t1 = env.parse(a, &mapping);
|
||||
let t2 = env.parse(b, &mapping);
|
||||
assert!(env.unifier.eq(t1, t2));
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
#[test_case(2,
|
||||
&[
|
||||
("v1", "Tuple[int]"),
|
||||
("v2", "List[int]"),
|
||||
],
|
||||
(("v1", "v2"), "Cannot unify TList with TTuple")
|
||||
; "type mismatch"
|
||||
)]
|
||||
#[test_case(2,
|
||||
&[
|
||||
("v1", "Tuple[int]"),
|
||||
("v2", "Tuple[float]"),
|
||||
],
|
||||
(("v1", "v2"), "Cannot unify objects with ID 0 and 1")
|
||||
; "tuple parameter mismatch"
|
||||
)]
|
||||
#[test_case(2,
|
||||
&[
|
||||
("v1", "Tuple[int,int]"),
|
||||
("v2", "Tuple[int]"),
|
||||
],
|
||||
(("v1", "v2"), "Cannot unify tuples with length 2 and 1")
|
||||
; "tuple length mismatch"
|
||||
)]
|
||||
#[test_case(3,
|
||||
&[
|
||||
("v1", "Record[a=float,b=int]"),
|
||||
("v2", "Foo[v3]"),
|
||||
],
|
||||
(("v1", "v2"), "No such attribute b")
|
||||
; "record obj merge"
|
||||
)]
|
||||
#[test_case(2,
|
||||
&[
|
||||
("v1", "List[v2]"),
|
||||
],
|
||||
(("v1", "v2"), "Recursive type is prohibited.")
|
||||
; "recursive type for lists"
|
||||
)]
|
||||
/// Test cases for invalid unifications.
|
||||
fn test_invalid_unification(
|
||||
variable_count: u32,
|
||||
unify_pairs: &[(&'static str, &'static str)],
|
||||
errornous_pair: ((&'static str, &'static str), &'static str),
|
||||
) {
|
||||
let mut env = TestEnvironment::new();
|
||||
let mut mapping = HashMap::new();
|
||||
for i in 1..=variable_count {
|
||||
let v = env.unifier.get_fresh_var();
|
||||
mapping.insert(format!("v{}", i), v.0);
|
||||
}
|
||||
// unification may have side effect when we do type resolution, so freeze the types
|
||||
// before doing unification.
|
||||
let mut pairs = Vec::new();
|
||||
for (a, b) in unify_pairs.iter() {
|
||||
let t1 = env.parse(a, &mapping);
|
||||
let t2 = env.parse(b, &mapping);
|
||||
pairs.push((t1, t2));
|
||||
}
|
||||
let (t1, t2) = (
|
||||
env.parse(errornous_pair.0 .0, &mapping),
|
||||
env.parse(errornous_pair.0 .1, &mapping),
|
||||
);
|
||||
for (a, b) in pairs {
|
||||
env.unifier.unify(a, b).unwrap();
|
||||
}
|
||||
assert_eq!(env.unifier.unify(t1, t2), Err(errornous_pair.1.to_string()));
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user