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This commit is contained in:
ychenfo 2021-08-23 11:13:45 +08:00
parent fb5b4697a9
commit 7b1fe36e90
4 changed files with 193 additions and 131 deletions
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25
nac3core/src/symbol_resolver.rs
View File

@ -1,5 +1,5 @@
use std::{cell::RefCell, sync::Arc};
use std::collections::HashMap;
use std::{cell::RefCell, sync::Arc};
use crate::top_level::{DefinitionId, TopLevelDef};
use crate::typecheck::{
@ -95,19 +95,34 @@ pub fn parse_type_annotation<T>(
Subscript { value, slice, .. } => {
if let Name { id, .. } = &value.node {
if id == "virtual" {
let ty =
parse_type_annotation(resolver, top_level_defs, unifier, primitives, slice)?;
let ty = parse_type_annotation(
resolver,
top_level_defs,
unifier,
primitives,
slice,
)?;
Ok(unifier.add_ty(TypeEnum::TVirtual { ty }))
} else {
let types = if let Tuple { elts, .. } = &slice.node {
elts.iter()
.map(|v| {
parse_type_annotation(resolver, top_level_defs, unifier, primitives, v)
parse_type_annotation(
resolver,
top_level_defs,
unifier,
primitives,
v,
)
})
.collect::<Result<Vec<_>, _>>()?
} else {
vec![parse_type_annotation(
resolver, top_level_defs, unifier, primitives, slice,
resolver,
top_level_defs,
unifier,
primitives,
slice,
)?]
};

288
nac3core/src/top_level.rs
View File

@ -5,9 +5,9 @@ use std::{collections::HashMap, collections::HashSet, sync::Arc};
use self::top_level_type_annotation_info::*;
use super::typecheck::type_inferencer::PrimitiveStore;
use super::typecheck::typedef::{SharedUnifier, Type, TypeEnum, Unifier};
use crate::typecheck::{typedef::{FunSignature, FuncArg}};
use crate::symbol_resolver::SymbolResolver;
use itertools::{Itertools, izip};
use crate::typecheck::typedef::{FunSignature, FuncArg};
use itertools::{izip, Itertools};
use parking_lot::{Mutex, RwLock};
use rustpython_parser::ast::{self, Stmt};
@ -23,7 +23,7 @@ pub mod top_level_type_annotation_info {
ConcretizedCustomClassKind {
id: DefinitionId,
// can not be type var, others are all fine
params: Vec<TypeAnnotation>
params: Vec<TypeAnnotation>,
},
// can only be ConcretizedCustomClassKind
VirtualKind(Box<TypeAnnotation>),
@ -39,10 +39,22 @@ pub mod top_level_type_annotation_info {
expr: &ast::Expr<T>,
) -> Result<TypeAnnotation, String> {
let results = vec![
parse_ast_to_concrete_primitive_kind(resolver, top_level_defs, unifier, primitives, expr),
parse_ast_to_concretized_custom_class_kind(resolver, top_level_defs, unifier, primitives, expr),
parse_ast_to_concrete_primitive_kind(
resolver,
top_level_defs,
unifier,
primitives,
expr,
),
parse_ast_to_concretized_custom_class_kind(
resolver,
top_level_defs,
unifier,
primitives,
expr,
),
parse_ast_to_type_variable_kind(resolver, top_level_defs, unifier, primitives, expr),
parse_ast_to_virtual_kind(resolver, top_level_defs, unifier, primitives, expr)
parse_ast_to_virtual_kind(resolver, top_level_defs, unifier, primitives, expr),
];
let results = results.iter().filter(|x| x.is_ok()).collect_vec();
@ -51,19 +63,18 @@ pub mod top_level_type_annotation_info {
} else {
Err("cannot be parsed the type annotation without ambiguity".into())
}
}
pub fn get_type_from_type_annotation_kinds(
top_level_defs: &[Arc<RwLock<TopLevelDef>>],
unifier: &mut Unifier,
primitives: &PrimitiveStore,
ann: &TypeAnnotation
ann: &TypeAnnotation,
) -> Result<Type, String> {
match ann {
TypeAnnotation::ConcretizedCustomClassKind { id, params } => {
let class_def = top_level_defs[id.0].read();
if let TopLevelDef::Class {fields, methods, type_vars, .. } = &*class_def {
if let TopLevelDef::Class { fields, methods, type_vars, .. } = &*class_def {
if type_vars.len() != params.len() {
Err(format!(
"unexpected number of type parameters: expected {} but got {}",
@ -73,12 +84,14 @@ pub mod top_level_type_annotation_info {
} else {
let param_ty = params
.iter()
.map(|x| get_type_from_type_annotation_kinds(
top_level_defs,
unifier,
primitives,
x
))
.map(|x| {
get_type_from_type_annotation_kinds(
top_level_defs,
unifier,
primitives,
x,
)
})
.collect::<Result<Vec<_>, _>>()?;
let subst = type_vars
@ -100,19 +113,15 @@ pub mod top_level_type_annotation_info {
(name.clone(), subst_ty)
})
.collect::<HashMap<String, Type>>();
tobj_fields.extend(
fields
.iter()
.map(|(name, ty)| {
let subst_ty = unifier.subst(*ty, &subst).unwrap_or(*ty);
(name.clone(), subst_ty)
})
);
tobj_fields.extend(fields.iter().map(|(name, ty)| {
let subst_ty = unifier.subst(*ty, &subst).unwrap_or(*ty);
(name.clone(), subst_ty)
}));
Ok(unifier.add_ty(TypeEnum::TObj {
obj_id: *id,
fields: tobj_fields.into(),
params: subst.into()
params: subst.into(),
}))
}
} else {
@ -121,7 +130,7 @@ pub mod top_level_type_annotation_info {
}
TypeAnnotation::SelfTypeKind(obj_id) => {
let class_def = top_level_defs[obj_id.0].read();
if let TopLevelDef::Class {fields, methods, type_vars, .. } = &*class_def {
if let TopLevelDef::Class { fields, methods, type_vars, .. } = &*class_def {
let subst = type_vars
.iter()
.map(|x| {
@ -135,16 +144,14 @@ pub mod top_level_type_annotation_info {
let mut tobj_fields = methods
.iter()
.map(|(name, ty, _)| {
(name.clone(), *ty)
})
.map(|(name, ty, _)| (name.clone(), *ty))
.collect::<HashMap<String, Type>>();
tobj_fields.extend(fields.clone().into_iter());
Ok(unifier.add_ty(TypeEnum::TObj {
obj_id: *obj_id,
fields: tobj_fields.into(),
params: subst.into()
params: subst.into(),
}))
} else {
unreachable!("should be class def here")
@ -157,7 +164,7 @@ pub mod top_level_type_annotation_info {
top_level_defs,
unifier,
primitives,
ty.as_ref()
ty.as_ref(),
)?;
Ok(unifier.add_ty(TypeEnum::TVirtual { ty }))
}
@ -176,12 +183,12 @@ pub mod top_level_type_annotation_info {
"int32" => Ok(TypeAnnotation::PrimitiveKind(primitives.int32)),
"int64" => Ok(TypeAnnotation::PrimitiveKind(primitives.int64)),
"float" => Ok(TypeAnnotation::PrimitiveKind(primitives.float)),
"bool" => Ok(TypeAnnotation::PrimitiveKind(primitives.bool)),
"None" => Ok(TypeAnnotation::PrimitiveKind(primitives.none)),
_ => Err("not primitive".into())
}
"bool" => Ok(TypeAnnotation::PrimitiveKind(primitives.bool)),
"None" => Ok(TypeAnnotation::PrimitiveKind(primitives.none)),
_ => Err("not primitive".into()),
},
_ => Err("not primitive".into())
_ => Err("not primitive".into()),
}
}
@ -194,15 +201,19 @@ pub mod top_level_type_annotation_info {
) -> Result<TypeAnnotation, String> {
match &expr.node {
ast::ExprKind::Name { id, .. } => match id.as_str() {
"int32" | "int64" | "float" | "bool" | "None" =>
Err("expect custom class instead of primitives here".into()),
"int32" | "int64" | "float" | "bool" | "None" => {
Err("expect custom class instead of primitives here".into())
}
x => {
let obj_id = resolver
.get_identifier_def(x)
.ok_or_else(|| "unknown class name".to_string())?;
let def = top_level_defs[obj_id.0].read();
if let TopLevelDef::Class { .. } = &*def {
Ok(TypeAnnotation::ConcretizedCustomClassKind { id: obj_id, params: vec![]})
Ok(TypeAnnotation::ConcretizedCustomClassKind {
id: obj_id,
params: vec![],
})
} else {
Err("function cannot be used as a type".into())
}
@ -211,13 +222,15 @@ pub mod top_level_type_annotation_info {
ast::ExprKind::Subscript { value, slice, .. } => {
if let ast::ExprKind::Name { id, .. } = &value.node {
if vec!["virtual", "Generic"].contains(&id.as_str()) { return Err("keywords cannot be class name".into()) }
if vec!["virtual", "Generic"].contains(&id.as_str()) {
return Err("keywords cannot be class name".into());
}
let obj_id = resolver
.get_identifier_def(id)
.ok_or_else(|| "unknown class name".to_string())?;
let def = top_level_defs[obj_id.0].read();
if let TopLevelDef::Class { .. } = &*def {
let param_type_infos =
let param_type_infos =
if let ast::ExprKind::Tuple { elts, .. } = &slice.node {
elts.iter()
.map(|v| {
@ -226,28 +239,40 @@ pub mod top_level_type_annotation_info {
top_level_defs,
unifier,
primitives,
v
v,
)
})
.collect::<Result<Vec<_>, _>>()?
} else {
vec![parse_ast_to_type_annotation_kinds(
resolver, top_level_defs, unifier, primitives, slice,
resolver,
top_level_defs,
unifier,
primitives,
slice,
)?]
};
if param_type_infos.iter().any(|x| matches!(x, TypeAnnotation::TypeVarKind( .. ))) {
return Err("cannot apply type variable to class generic parameters".into())
if param_type_infos
.iter()
.any(|x| matches!(x, TypeAnnotation::TypeVarKind(..)))
{
return Err(
"cannot apply type variable to class generic parameters".into()
);
}
Ok(TypeAnnotation::ConcretizedCustomClassKind { id: obj_id, params: param_type_infos })
Ok(TypeAnnotation::ConcretizedCustomClassKind {
id: obj_id,
params: param_type_infos,
})
} else {
Err("function cannot be used as a type".into())
}
} else {
Err("unsupported expression type".into())
}
},
}
_ => Err("unsupported expression type".into())
_ => Err("unsupported expression type".into()),
}
}
@ -260,13 +285,14 @@ pub mod top_level_type_annotation_info {
) -> Result<TypeAnnotation, String> {
match &expr.node {
ast::ExprKind::Subscript { value, slice, .. }
if matches!(&value.node, ast::ExprKind::Name { id, .. } if id == "virtual") => {
if { matches!(&value.node, ast::ExprKind::Name { id, .. } if id == "virtual") } =>
{
let def = parse_ast_to_concretized_custom_class_kind(
resolver,
top_level_defs,
unifier,
primitives,
slice.as_ref()
slice.as_ref(),
)?;
if !matches!(def, TypeAnnotation::ConcretizedCustomClassKind { .. }) {
unreachable!("should must be concretized custom class kind")
@ -274,7 +300,7 @@ pub mod top_level_type_annotation_info {
Ok(TypeAnnotation::VirtualKind(def.into()))
}
_ => Err("virtual type annotation must be like `virtual[ .. ]`".into())
_ => Err("virtual type annotation must be like `virtual[ .. ]`".into()),
}
}
@ -360,12 +386,10 @@ pub struct TopLevelComposer {
impl TopLevelComposer {
pub fn make_top_level_context(self) -> TopLevelContext {
TopLevelContext {
definitions: RwLock::new(self
.definition_ast_list
.into_iter()
.map(|(x, ..)| x)
.collect::<Vec<_>>()
).into(),
definitions: RwLock::new(
self.definition_ast_list.into_iter().map(|(x, ..)| x).collect::<Vec<_>>(),
)
.into(),
// FIXME: all the big unifier or?
unifiers: Default::default(),
}
@ -436,7 +460,7 @@ impl TopLevelComposer {
"bool".into(),
"none".into(),
"None".into(),
]
],
};
(
vec![
@ -489,11 +513,7 @@ impl TopLevelComposer {
}
fn extract_def_list(&self) -> Vec<Arc<RwLock<TopLevelDef>>> {
self
.definition_ast_list
.iter()
.map(|(def, ..)| def.clone())
.collect_vec()
self.definition_ast_list.iter().map(|(def, ..)| def.clone()).collect_vec()
}
/// step 0, register, just remeber the names of top level classes/function
@ -505,9 +525,9 @@ impl TopLevelComposer {
match &ast.node {
ast::StmtKind::ClassDef { name, body, .. } => {
if self.keyword_list.contains(name) {
return Err("cannot use keyword as a class name".into())
return Err("cannot use keyword as a class name".into());
}
let class_name = name.to_string();
let class_def_id = self.definition_ast_list.len();
@ -531,7 +551,7 @@ impl TopLevelComposer {
// in this top level def, method name is prefixed with the class name
Arc<RwLock<TopLevelDef>>,
DefinitionId,
Type
Type,
)> = Vec::new();
let mut class_method_index_offset = 0;
for b in body {
@ -553,15 +573,14 @@ impl TopLevelComposer {
))
.into(),
DefinitionId(method_def_id),
dummy_method_type.0
dummy_method_type.0,
));
} else {
// do nothing
continue
continue;
}
}
// move the ast to the entry of the class in the ast_list
class_def_ast.1 = Some(ast);
// get the methods into the class_def
@ -569,7 +588,9 @@ impl TopLevelComposer {
let mut class_def = class_def_ast.0.write();
if let TopLevelDef::Class { methods, .. } = class_def.deref_mut() {
methods.push((name.clone(), *ty, *id))
} else { unreachable!() }
} else {
unreachable!()
}
}
// now class_def_ast and class_method_def_ast_ids are ok, put them into actual def list in correct order
self.definition_ast_list.push(class_def_ast);
@ -647,8 +668,9 @@ impl TopLevelComposer {
// should update the TopLevelDef::Class.typevars and the TypeEnum::TObj.params
ast::ExprKind::Subscript { value, slice, .. }
if {
matches!(&value.node, ast::ExprKind::Name { id, .. } if id == "Generic")
} => {
matches!(&value.node, ast::ExprKind::Name { id, .. } if id == "Generic")
} =>
{
if !is_generic {
is_generic = true;
} else {
@ -672,7 +694,7 @@ impl TopLevelComposer {
&temp_def_list,
unifier,
primitives_store,
e
e,
)
})
.collect::<Result<Vec<_>, _>>()?;
@ -702,11 +724,11 @@ impl TopLevelComposer {
}
})
.collect_vec();
if !all_unique_type_var {
return Err("expect unique type variables".into());
}
// add to TopLevelDef
class_def_type_vars.extend(type_vars);
}
@ -751,11 +773,14 @@ impl TopLevelComposer {
&value.node,
ast::ExprKind::Name { id, .. } if id == "Generic"
)
) { continue }
) {
continue;
}
if has_base {
return Err("a class def can only have at most one base class \
declaration and one generic declaration".into())
declaration and one generic declaration"
.into());
}
has_base = true;
@ -764,14 +789,16 @@ impl TopLevelComposer {
&temp_def_list,
self.unifier.borrow_mut(),
&self.primitives_ty,
b
b,
)?;
if let TypeAnnotation::ConcretizedCustomClassKind { .. } = base_ty {
// TODO: check to prevent cyclic base class
class_ancestors.push(base_ty);
} else {
return Err("class base declaration can only be concretized custom class".into())
return Err(
"class base declaration can only be concretized custom class".into()
);
}
}
}
@ -784,7 +811,7 @@ impl TopLevelComposer {
let unifier = self.unifier.borrow_mut();
let primitives = &self.primitives_ty;
let def_ast_list = &self.definition_ast_list;
let mut type_var_to_concrete_def: HashMap<Type, TypeAnnotation> = HashMap::new();
for (class_def, class_ast) in def_ast_list {
Self::analyze_single_class(
@ -793,19 +820,20 @@ impl TopLevelComposer {
&temp_def_list,
unifier,
primitives,
&mut type_var_to_concrete_def
&mut type_var_to_concrete_def,
)?
}
// base class methods add and check
// TODO:
// TODO:
// unification of previously assigned typevar
for (ty, def) in type_var_to_concrete_def {
let target_ty = get_type_from_type_annotation_kinds(&temp_def_list, unifier, primitives, &def)?;
let target_ty =
get_type_from_type_annotation_kinds(&temp_def_list, unifier, primitives, &def)?;
unifier.unify(ty, target_ty)?;
}
Ok(())
}
@ -830,17 +858,18 @@ impl TopLevelComposer {
let resolver = resolver.unwrap();
let resolver = resolver.deref().lock();
let function_resolver = resolver.deref();
let arg_types = {
args
.args
args.args
.iter()
.map(|x| -> Result<FuncArg, String> {
let annotation = x
.node
.annotation
.as_ref()
.ok_or_else(|| "function parameter type annotation needed".to_string())?
.ok_or_else(|| {
"function parameter type annotation needed".to_string()
})?
.as_ref();
Ok(FuncArg {
name: x.node.arg.clone(),
@ -848,10 +877,10 @@ impl TopLevelComposer {
temp_def_list.as_slice(),
unifier,
primitives_store,
annotation
annotation,
)?,
// TODO: function type var
default_value: Default::default()
default_value: Default::default(),
})
})
.collect::<Result<Vec<_>, _>>()?
@ -866,16 +895,19 @@ impl TopLevelComposer {
temp_def_list.as_slice(),
unifier,
primitives_store,
return_annotation
return_annotation,
)?
};
let function_ty = unifier.add_ty(TypeEnum::TFunc(FunSignature {
args: arg_types,
ret: return_ty,
// TODO: handle var map
vars: Default::default()
}.into()));
let function_ty = unifier.add_ty(TypeEnum::TFunc(
FunSignature {
args: arg_types,
ret: return_ty,
// TODO: handle var map
vars: Default::default(),
}
.into(),
));
unifier.unify(*dummy_ty, function_ty)?;
} else {
unreachable!("must be both function");
@ -883,7 +915,7 @@ impl TopLevelComposer {
} else {
continue;
}
};
}
Ok(())
}
@ -899,7 +931,7 @@ impl TopLevelComposer {
temp_def_list: &[Arc<RwLock<TopLevelDef>>],
unifier: &mut Unifier,
primitives: &PrimitiveStore,
type_var_to_concrete_def: &mut HashMap<Type, TypeAnnotation>
type_var_to_concrete_def: &mut HashMap<Type, TypeAnnotation>,
) -> Result<(), String> {
let mut class_def = class_def.write();
let (
@ -920,9 +952,20 @@ impl TopLevelComposer {
resolver,
type_vars,
..
} = class_def.deref_mut() {
} = class_def.deref_mut()
{
if let ast::StmtKind::ClassDef { name, bases, body, .. } = &class_ast {
(object_id, name.clone(), bases, body, ancestors, fields, methods, type_vars, resolver)
(
object_id,
name.clone(),
bases,
body,
ancestors,
fields,
methods,
type_vars,
resolver,
)
} else {
unreachable!("here must be class def ast");
}
@ -935,12 +978,13 @@ impl TopLevelComposer {
for b in class_body_ast {
if let ast::StmtKind::FunctionDef { args, returns, name, body, .. } = &b.node {
let (method_dummy_ty, ..) = Self::get_class_method_def_info(class_methods_def, name)?;
let (method_dummy_ty, ..) =
Self::get_class_method_def_info(class_methods_def, name)?;
// TODO: handle self arg
// TODO: handle parameter with same name
let arg_type: Vec<FuncArg> = {
let mut result = Vec::new();
for x in &args.args{
for x in &args.args {
let name = x.node.arg.clone();
let type_ann = {
let annotation_expr = x
@ -954,7 +998,7 @@ impl TopLevelComposer {
temp_def_list,
unifier,
primitives,
annotation_expr
annotation_expr,
)?
};
if let TypeAnnotation::TypeVarKind(_ty) = &type_ann {
@ -965,7 +1009,7 @@ impl TopLevelComposer {
name,
ty: unifier.get_fresh_var().0,
// TODO: symbol default value?
default_value: None
default_value: None,
};
// push the dummy type and the type annotation
// into the list for later unification
@ -984,7 +1028,7 @@ impl TopLevelComposer {
temp_def_list,
unifier,
primitives,
result
result,
)?;
let dummy_return_type = unifier.get_fresh_var().0;
type_var_to_concrete_def.insert(dummy_return_type, annotation.clone());
@ -993,11 +1037,9 @@ impl TopLevelComposer {
// TODO: handle var map, to create a new copy of type var
// while tracking the type var associated with class
let method_var_map: HashMap<u32, Type> = HashMap::new();
let method_type = unifier.add_ty(TypeEnum::TFunc(FunSignature {
args: arg_type,
ret: ret_type,
vars: method_var_map
}.into()));
let method_type = unifier.add_ty(TypeEnum::TFunc(
FunSignature { args: arg_type, ret: ret_type, vars: method_var_map }.into(),
));
// unify now since function type is not in type annotation define
// which is fine since type within method_type will be subst later
unifier.unify(method_dummy_ty, method_type)?;
@ -1007,9 +1049,12 @@ impl TopLevelComposer {
for b in body {
let mut defined_fields: HashSet<String> = HashSet::new();
// TODO: check the type of value, field instantiation check
if let ast::StmtKind::AnnAssign { annotation, target, value: _, .. } = &b.node {
if let ast::StmtKind::AnnAssign { annotation, target, value: _, .. } =
&b.node
{
if let ast::ExprKind::Attribute { value, attr, .. } = &target.node {
if matches!(&value.node, ast::ExprKind::Name { id, .. } if id == "self") {
if matches!(&value.node, ast::ExprKind::Name { id, .. } if id == "self")
{
if defined_fields.insert(attr.to_string()) {
let dummy_field_type = unifier.get_fresh_var().0;
class_fields_def.push((attr.to_string(), dummy_field_type));
@ -1018,9 +1063,10 @@ impl TopLevelComposer {
&temp_def_list,
unifier,
primitives,
annotation.as_ref()
annotation.as_ref(),
)?;
type_var_to_concrete_def.insert(dummy_field_type, annotation);
type_var_to_concrete_def
.insert(dummy_field_type, annotation);
} else {
return Err("same class fields defined twice".into());
}
@ -1032,13 +1078,13 @@ impl TopLevelComposer {
} else {
continue;
}
};
}
Ok(())
}
fn get_class_method_def_info(
class_methods_def: &[(String, Type, DefinitionId)],
method_name: &str
method_name: &str,
) -> Result<(Type, DefinitionId), String> {
for (name, ty, def_id) in class_methods_def {
if name == method_name {
@ -1047,4 +1093,4 @@ impl TopLevelComposer {
}
Err(format!("no method {} in the current class", method_name))
}
}
}

6
nac3core/src/typecheck/typedef/mod.rs
View File

@ -672,7 +672,11 @@ impl Unifier {
}
fn incompatible_types(&mut self, a: Type, b: Type) -> Result<(), String> {
Err(format!("Cannot unify {} with {}", self.internal_stringify(a), self.internal_stringify(b)))
Err(format!(
"Cannot unify {} with {}",
self.internal_stringify(a),
self.internal_stringify(b)
))
}
/// Instantiate a function if it hasn't been instantiated.

5
nac3core/src/typecheck/typedef/test.rs
View File

@ -469,10 +469,7 @@ fn test_rigid_var() {
assert_eq!(env.unifier.unify(a, b), Err("Cannot unify var3 with var2".to_string()));
env.unifier.unify(list_a, list_x).unwrap();
assert_eq!(
env.unifier.unify(list_x, list_int),
Err("Cannot unify 0 with var2".to_string())
);
assert_eq!(env.unifier.unify(list_x, list_int), Err("Cannot unify 0 with var2".to_string()));
env.unifier.replace_rigid_var(a, int);
env.unifier.unify(list_x, list_int).unwrap();