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top-level related changes

This commit is contained in:
pca006132 2021-08-03 13:38:27 +08:00
parent d4d12a9d1d
commit f00c1813e3
6 changed files with 139 additions and 48 deletions
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5
nac3core/src/typecheck/mod.rs
View File

@ -1,8 +1,9 @@
#![allow(dead_code)]
mod function_check;
pub mod location;
mod magic_methods;
pub mod symbol_resolver;
pub mod typedef;
mod top_level;
pub mod type_inferencer;
pub mod typedef;
mod unification_table;
mod function_check;

4
nac3core/src/typecheck/symbol_resolver.rs
View File

@ -1,5 +1,6 @@
use super::typedef::Type;
use super::location::Location;
use super::top_level::DefinitionId;
use super::typedef::Type;
use rustpython_parser::ast::Expr;
pub enum SymbolValue<'a> {
@ -14,6 +15,7 @@ pub enum SymbolValue<'a> {
pub trait SymbolResolver {
fn get_symbol_type(&mut self, str: &str) -> Option<Type>;
fn parse_type_name(&mut self, expr: &Expr<()>) -> Option<Type>;
fn get_function_def(&mut self, str: &str) -> DefinitionId;
fn get_symbol_value(&mut self, str: &str) -> Option<SymbolValue>;
fn get_symbol_location(&mut self, str: &str) -> Option<Location>;
// handle function call etc.

51
nac3core/src/typecheck/top_level.rs Normal file
View File

@ -0,0 +1,51 @@
use std::collections::HashMap;
use super::typedef::{SharedUnifier, Type};
use crossbeam::queue::SegQueue;
use crossbeam::sync::ShardedLock;
use rustpython_parser::ast::Stmt;
pub struct DefinitionId(usize);
pub enum TopLevelDef {
Class {
// object ID used for TypeEnum
object_id: usize,
// type variables bounded to the class.
type_vars: Vec<Type>,
// class fields and method signature.
fields: Vec<(String, Type)>,
// class methods, pointing to the corresponding function definition.
methods: Vec<(String, DefinitionId)>,
// ancestor classes, including itself.
ancestors: Vec<DefinitionId>,
},
Function {
signature: Type,
/// Function instance to symbol mapping
/// Key: string representation of type variable values, sorted by variable ID in ascending
/// order, including type variables associated with the class.
/// Value: function symbol name.
instance_to_symbol: HashMap<String, String>,
/// Function instances to annotated AST mapping
/// Key: string representation of type variable values, sorted by variable ID in ascending
/// order, including type variables associated with the class. Excluding rigid type
/// variables.
/// Value: AST annotated with types together with a unification table index. Could contain
/// rigid type variables that would be substituted when the function is instantiated.
instance_to_stmt: HashMap<String, (Stmt<Type>, usize)>,
},
}
pub struct CodeGenTask {
pub subst: HashMap<usize, Type>,
pub symbol_name: String,
pub body: Stmt<Type>,
pub unifier: SharedUnifier,
}
pub struct TopLevelContext {
pub definitions: Vec<ShardedLock<TopLevelDef>>,
pub unifiers: Vec<SharedUnifier>,
pub codegen_queue: SegQueue<CodeGenTask>,
}

27
nac3core/src/typecheck/type_inferencer/test.rs
View File

@ -1,5 +1,6 @@
use super::super::location::Location;
use super::super::symbol_resolver::*;
use super::super::top_level::DefinitionId;
use super::super::typedef::*;
use super::*;
use indoc::indoc;
@ -33,6 +34,10 @@ impl SymbolResolver for Resolver {
fn get_symbol_location(&mut self, _: &str) -> Option<Location> {
unimplemented!()
}
fn get_function_def(&mut self, _: &str) -> DefinitionId {
unimplemented!()
}
}
struct TestEnvironment {
@ -96,16 +101,17 @@ impl TestEnvironment {
let mut identifier_mapping = HashMap::new();
identifier_mapping.insert("None".into(), none);
let resolver =
Box::new(Resolver { identifier_mapping: identifier_mapping.clone(), class_names: Default::default() })
as Box<dyn SymbolResolver>;
let resolver = Box::new(Resolver {
identifier_mapping: identifier_mapping.clone(),
class_names: Default::default(),
}) as Box<dyn SymbolResolver>;
TestEnvironment {
unifier,
function_data: FunctionData {
resolver,
bound_variables: Vec::new(),
return_type: None
return_type: None,
},
primitives,
id_to_name,
@ -171,7 +177,11 @@ impl TestEnvironment {
}));
let bar = unifier.add_ty(TypeEnum::TObj {
obj_id: 6,
fields: [("a".into(), int32), ("b".into(), fun)].iter().cloned().collect::<HashMap<_, _>>().into(),
fields: [("a".into(), int32), ("b".into(), fun)]
.iter()
.cloned()
.collect::<HashMap<_, _>>()
.into(),
params: Default::default(),
});
identifier_mapping.insert(
@ -185,7 +195,11 @@ impl TestEnvironment {
let bar2 = unifier.add_ty(TypeEnum::TObj {
obj_id: 7,
fields: [("a".into(), bool), ("b".into(), fun)].iter().cloned().collect::<HashMap<_, _>>().into(),
fields: [("a".into(), bool), ("b".into(), fun)]
.iter()
.cloned()
.collect::<HashMap<_, _>>()
.into(),
params: Default::default(),
});
identifier_mapping.insert(
@ -470,3 +484,4 @@ fn test_primitive_magic_methods(source: &str, mapping: HashMap<&str, &str>) {
assert_eq!(format!("{}: {}", k, v), format!("{}: {}", k, name));
}
}

30
nac3core/src/typecheck/typedef/mod.rs
View File

@ -1,9 +1,10 @@
use itertools::{chain, zip, Itertools};
use std::{borrow::Cow, sync::Arc};
use std::borrow::Cow;
use std::cell::RefCell;
use std::collections::HashMap;
use std::iter::once;
use std::rc::Rc;
use std::sync::{Arc, Mutex};
use super::unification_table::{UnificationKey, UnificationTable};
@ -89,6 +90,8 @@ impl TypeEnum {
}
}
pub type SharedUnifier = Arc<Mutex<(UnificationTable<TypeEnum>, u32)>>;
pub struct Unifier {
unification_table: UnificationTable<Rc<TypeEnum>>,
var_id: u32,
@ -100,6 +103,15 @@ impl Unifier {
Unifier { unification_table: UnificationTable::new(), var_id: 0 }
}
pub fn from_shared_unifier(unifier: &SharedUnifier) -> Unifier {
let lock = unifier.lock().unwrap();
Unifier { unification_table: UnificationTable::from_send(&lock.0), var_id: lock.1 }
}
pub fn get_shared_unifier(&self) -> SharedUnifier {
Arc::new(Mutex::new((self.unification_table.get_send(), self.var_id)))
}
/// Register a type to the unifier.
/// Returns a key in the unification_table.
pub fn add_ty(&mut self, a: TypeEnum) -> Type {
@ -373,7 +385,11 @@ impl Unifier {
(TVar { meta: Record(map), id, range, .. }, TObj { fields, .. }) => {
self.occur_check(a, b)?;
for (k, v) in map.borrow().iter() {
let ty = fields.borrow().get(k).copied().ok_or_else(|| format!("No such attribute {}", k))?;
let ty = fields
.borrow()
.get(k)
.copied()
.ok_or_else(|| format!("No such attribute {}", k))?;
self.unify(ty, *v)?;
}
let x = self.check_var_compatibility(*id, b, &range.borrow())?.unwrap_or(b);
@ -385,7 +401,11 @@ impl Unifier {
let ty = self.get_ty(*ty);
if let TObj { fields, .. } = ty.as_ref() {
for (k, v) in map.borrow().iter() {
let ty = fields.borrow().get(k).copied().ok_or_else(|| format!("No such attribute {}", k))?;
let ty = fields
.borrow()
.get(k)
.copied()
.ok_or_else(|| format!("No such attribute {}", k))?;
if !matches!(self.get_ty(ty).as_ref(), TFunc { .. }) {
return Err(format!("Cannot access field {} for virtual type", k));
}
@ -659,7 +679,9 @@ impl Unifier {
if need_subst {
let obj_id = *obj_id;
let params = self.subst_map(&params, mapping).unwrap_or_else(|| params.clone());
let fields = self.subst_map(&fields.borrow(), mapping).unwrap_or_else(|| fields.borrow().clone());
let fields = self
.subst_map(&fields.borrow(), mapping)
.unwrap_or_else(|| fields.borrow().clone());
Some(self.add_ty(TypeEnum::TObj { obj_id, params, fields: fields.into() }))
} else {
None

10
nac3core/src/typecheck/unification_table.rs
View File

@ -71,13 +71,13 @@ impl<V> UnificationTable<Rc<V>>
where
V: Clone,
{
pub fn into_send(self) -> UnificationTable<V> {
pub fn get_send(&self) -> UnificationTable<V> {
let values = self.values.iter().map(|v| v.as_ref().clone()).collect();
UnificationTable { parents: self.parents, ranks: self.ranks, values }
UnificationTable { parents: self.parents.clone(), ranks: self.ranks.clone(), values }
}
pub fn from_send(table: UnificationTable<V>) -> UnificationTable<Rc<V>> {
let values = table.values.into_iter().map(Rc::new).collect();
UnificationTable { parents: table.parents, ranks: table.ranks, values }
pub fn from_send(table: &UnificationTable<V>) -> UnificationTable<Rc<V>> {
let values = table.values.iter().cloned().map(Rc::new).collect();
UnificationTable { parents: table.parents.clone(), ranks: table.ranks.clone(), values }
}
}