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

240
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 self::top_level_type_annotation_info::*;
use super::typecheck::type_inferencer::PrimitiveStore; use super::typecheck::type_inferencer::PrimitiveStore;
use super::typecheck::typedef::{SharedUnifier, Type, TypeEnum, Unifier}; use super::typecheck::typedef::{SharedUnifier, Type, TypeEnum, Unifier};
use crate::typecheck::{typedef::{FunSignature, FuncArg}};
use crate::symbol_resolver::SymbolResolver; 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 parking_lot::{Mutex, RwLock};
use rustpython_parser::ast::{self, Stmt}; use rustpython_parser::ast::{self, Stmt};
@ -23,7 +23,7 @@ pub mod top_level_type_annotation_info {
ConcretizedCustomClassKind { ConcretizedCustomClassKind {
id: DefinitionId, id: DefinitionId,
// can not be type var, others are all fine // can not be type var, others are all fine
params: Vec<TypeAnnotation> params: Vec<TypeAnnotation>,
}, },
// can only be ConcretizedCustomClassKind // can only be ConcretizedCustomClassKind
VirtualKind(Box<TypeAnnotation>), VirtualKind(Box<TypeAnnotation>),
@ -39,10 +39,22 @@ pub mod top_level_type_annotation_info {
expr: &ast::Expr<T>, expr: &ast::Expr<T>,
) -> Result<TypeAnnotation, String> { ) -> Result<TypeAnnotation, String> {
let results = vec![ let results = vec![
parse_ast_to_concrete_primitive_kind(resolver, top_level_defs, unifier, primitives, expr), parse_ast_to_concrete_primitive_kind(
parse_ast_to_concretized_custom_class_kind(resolver, top_level_defs, unifier, primitives, expr), 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_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(); let results = results.iter().filter(|x| x.is_ok()).collect_vec();
@ -51,19 +63,18 @@ pub mod top_level_type_annotation_info {
} else { } else {
Err("cannot be parsed the type annotation without ambiguity".into()) Err("cannot be parsed the type annotation without ambiguity".into())
} }
} }
pub fn get_type_from_type_annotation_kinds( pub fn get_type_from_type_annotation_kinds(
top_level_defs: &[Arc<RwLock<TopLevelDef>>], top_level_defs: &[Arc<RwLock<TopLevelDef>>],
unifier: &mut Unifier, unifier: &mut Unifier,
primitives: &PrimitiveStore, primitives: &PrimitiveStore,
ann: &TypeAnnotation ann: &TypeAnnotation,
) -> Result<Type, String> { ) -> Result<Type, String> {
match ann { match ann {
TypeAnnotation::ConcretizedCustomClassKind { id, params } => { TypeAnnotation::ConcretizedCustomClassKind { id, params } => {
let class_def = top_level_defs[id.0].read(); 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() { if type_vars.len() != params.len() {
Err(format!( Err(format!(
"unexpected number of type parameters: expected {} but got {}", "unexpected number of type parameters: expected {} but got {}",
@ -73,12 +84,14 @@ pub mod top_level_type_annotation_info {
} else { } else {
let param_ty = params let param_ty = params
.iter() .iter()
.map(|x| get_type_from_type_annotation_kinds( .map(|x| {
get_type_from_type_annotation_kinds(
top_level_defs, top_level_defs,
unifier, unifier,
primitives, primitives,
x x,
)) )
})
.collect::<Result<Vec<_>, _>>()?; .collect::<Result<Vec<_>, _>>()?;
let subst = type_vars let subst = type_vars
@ -101,18 +114,14 @@ pub mod top_level_type_annotation_info {
}) })
.collect::<HashMap<String, Type>>(); .collect::<HashMap<String, Type>>();
tobj_fields.extend( tobj_fields.extend(fields.iter().map(|(name, ty)| {
fields
.iter()
.map(|(name, ty)| {
let subst_ty = unifier.subst(*ty, &subst).unwrap_or(*ty); let subst_ty = unifier.subst(*ty, &subst).unwrap_or(*ty);
(name.clone(), subst_ty) (name.clone(), subst_ty)
}) }));
);
Ok(unifier.add_ty(TypeEnum::TObj { Ok(unifier.add_ty(TypeEnum::TObj {
obj_id: *id, obj_id: *id,
fields: tobj_fields.into(), fields: tobj_fields.into(),
params: subst.into() params: subst.into(),
})) }))
} }
} else { } else {
@ -121,7 +130,7 @@ pub mod top_level_type_annotation_info {
} }
TypeAnnotation::SelfTypeKind(obj_id) => { TypeAnnotation::SelfTypeKind(obj_id) => {
let class_def = top_level_defs[obj_id.0].read(); 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 let subst = type_vars
.iter() .iter()
.map(|x| { .map(|x| {
@ -135,16 +144,14 @@ pub mod top_level_type_annotation_info {
let mut tobj_fields = methods let mut tobj_fields = methods
.iter() .iter()
.map(|(name, ty, _)| { .map(|(name, ty, _)| (name.clone(), *ty))
(name.clone(), *ty)
})
.collect::<HashMap<String, Type>>(); .collect::<HashMap<String, Type>>();
tobj_fields.extend(fields.clone().into_iter()); tobj_fields.extend(fields.clone().into_iter());
Ok(unifier.add_ty(TypeEnum::TObj { Ok(unifier.add_ty(TypeEnum::TObj {
obj_id: *obj_id, obj_id: *obj_id,
fields: tobj_fields.into(), fields: tobj_fields.into(),
params: subst.into() params: subst.into(),
})) }))
} else { } else {
unreachable!("should be class def here") unreachable!("should be class def here")
@ -157,7 +164,7 @@ pub mod top_level_type_annotation_info {
top_level_defs, top_level_defs,
unifier, unifier,
primitives, primitives,
ty.as_ref() ty.as_ref(),
)?; )?;
Ok(unifier.add_ty(TypeEnum::TVirtual { ty })) Ok(unifier.add_ty(TypeEnum::TVirtual { ty }))
} }
@ -178,10 +185,10 @@ pub mod top_level_type_annotation_info {
"float" => Ok(TypeAnnotation::PrimitiveKind(primitives.float)), "float" => Ok(TypeAnnotation::PrimitiveKind(primitives.float)),
"bool" => Ok(TypeAnnotation::PrimitiveKind(primitives.bool)), "bool" => Ok(TypeAnnotation::PrimitiveKind(primitives.bool)),
"None" => Ok(TypeAnnotation::PrimitiveKind(primitives.none)), "None" => Ok(TypeAnnotation::PrimitiveKind(primitives.none)),
_ => Err("not primitive".into()) _ => 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> { ) -> Result<TypeAnnotation, String> {
match &expr.node { match &expr.node {
ast::ExprKind::Name { id, .. } => match id.as_str() { ast::ExprKind::Name { id, .. } => match id.as_str() {
"int32" | "int64" | "float" | "bool" | "None" => "int32" | "int64" | "float" | "bool" | "None" => {
Err("expect custom class instead of primitives here".into()), Err("expect custom class instead of primitives here".into())
}
x => { x => {
let obj_id = resolver let obj_id = resolver
.get_identifier_def(x) .get_identifier_def(x)
.ok_or_else(|| "unknown class name".to_string())?; .ok_or_else(|| "unknown class name".to_string())?;
let def = top_level_defs[obj_id.0].read(); let def = top_level_defs[obj_id.0].read();
if let TopLevelDef::Class { .. } = &*def { if let TopLevelDef::Class { .. } = &*def {
Ok(TypeAnnotation::ConcretizedCustomClassKind { id: obj_id, params: vec![]}) Ok(TypeAnnotation::ConcretizedCustomClassKind {
id: obj_id,
params: vec![],
})
} else { } else {
Err("function cannot be used as a type".into()) Err("function cannot be used as a type".into())
} }
@ -211,7 +222,9 @@ pub mod top_level_type_annotation_info {
ast::ExprKind::Subscript { value, slice, .. } => { ast::ExprKind::Subscript { value, slice, .. } => {
if let ast::ExprKind::Name { id, .. } = &value.node { 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 let obj_id = resolver
.get_identifier_def(id) .get_identifier_def(id)
.ok_or_else(|| "unknown class name".to_string())?; .ok_or_else(|| "unknown class name".to_string())?;
@ -226,28 +239,40 @@ pub mod top_level_type_annotation_info {
top_level_defs, top_level_defs,
unifier, unifier,
primitives, primitives,
v v,
) )
}) })
.collect::<Result<Vec<_>, _>>()? .collect::<Result<Vec<_>, _>>()?
} else { } else {
vec![parse_ast_to_type_annotation_kinds( 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( .. ))) { if param_type_infos
return Err("cannot apply type variable to class generic parameters".into()) .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 { } else {
Err("function cannot be used as a type".into()) Err("function cannot be used as a type".into())
} }
} else { } else {
Err("unsupported expression type".into()) 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> { ) -> Result<TypeAnnotation, String> {
match &expr.node { match &expr.node {
ast::ExprKind::Subscript { value, slice, .. } 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( let def = parse_ast_to_concretized_custom_class_kind(
resolver, resolver,
top_level_defs, top_level_defs,
unifier, unifier,
primitives, primitives,
slice.as_ref() slice.as_ref(),
)?; )?;
if !matches!(def, TypeAnnotation::ConcretizedCustomClassKind { .. }) { if !matches!(def, TypeAnnotation::ConcretizedCustomClassKind { .. }) {
unreachable!("should must be concretized custom class kind") unreachable!("should must be concretized custom class kind")
@ -274,7 +300,7 @@ pub mod top_level_type_annotation_info {
Ok(TypeAnnotation::VirtualKind(def.into())) 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 { impl TopLevelComposer {
pub fn make_top_level_context(self) -> TopLevelContext { pub fn make_top_level_context(self) -> TopLevelContext {
TopLevelContext { TopLevelContext {
definitions: RwLock::new(self definitions: RwLock::new(
.definition_ast_list self.definition_ast_list.into_iter().map(|(x, ..)| x).collect::<Vec<_>>(),
.into_iter() )
.map(|(x, ..)| x) .into(),
.collect::<Vec<_>>()
).into(),
// FIXME: all the big unifier or? // FIXME: all the big unifier or?
unifiers: Default::default(), unifiers: Default::default(),
} }
@ -436,7 +460,7 @@ impl TopLevelComposer {
"bool".into(), "bool".into(),
"none".into(), "none".into(),
"None".into(), "None".into(),
] ],
}; };
( (
vec![ vec![
@ -489,11 +513,7 @@ impl TopLevelComposer {
} }
fn extract_def_list(&self) -> Vec<Arc<RwLock<TopLevelDef>>> { fn extract_def_list(&self) -> Vec<Arc<RwLock<TopLevelDef>>> {
self self.definition_ast_list.iter().map(|(def, ..)| def.clone()).collect_vec()
.definition_ast_list
.iter()
.map(|(def, ..)| def.clone())
.collect_vec()
} }
/// step 0, register, just remeber the names of top level classes/function /// step 0, register, just remeber the names of top level classes/function
@ -505,7 +525,7 @@ impl TopLevelComposer {
match &ast.node { match &ast.node {
ast::StmtKind::ClassDef { name, body, .. } => { ast::StmtKind::ClassDef { name, body, .. } => {
if self.keyword_list.contains(name) { 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_name = name.to_string();
@ -531,7 +551,7 @@ impl TopLevelComposer {
// in this top level def, method name is prefixed with the class name // in this top level def, method name is prefixed with the class name
Arc<RwLock<TopLevelDef>>, Arc<RwLock<TopLevelDef>>,
DefinitionId, DefinitionId,
Type Type,
)> = Vec::new(); )> = Vec::new();
let mut class_method_index_offset = 0; let mut class_method_index_offset = 0;
for b in body { for b in body {
@ -553,12 +573,11 @@ impl TopLevelComposer {
)) ))
.into(), .into(),
DefinitionId(method_def_id), DefinitionId(method_def_id),
dummy_method_type.0 dummy_method_type.0,
)); ));
} else { } else {
// do nothing // do nothing
continue continue;
} }
} }
@ -569,7 +588,9 @@ impl TopLevelComposer {
let mut class_def = class_def_ast.0.write(); let mut class_def = class_def_ast.0.write();
if let TopLevelDef::Class { methods, .. } = class_def.deref_mut() { if let TopLevelDef::Class { methods, .. } = class_def.deref_mut() {
methods.push((name.clone(), *ty, *id)) 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 // 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); self.definition_ast_list.push(class_def_ast);
@ -648,7 +669,8 @@ impl TopLevelComposer {
ast::ExprKind::Subscript { value, slice, .. } ast::ExprKind::Subscript { value, slice, .. }
if { if {
matches!(&value.node, ast::ExprKind::Name { id, .. } if id == "Generic") matches!(&value.node, ast::ExprKind::Name { id, .. } if id == "Generic")
} => { } =>
{
if !is_generic { if !is_generic {
is_generic = true; is_generic = true;
} else { } else {
@ -672,7 +694,7 @@ impl TopLevelComposer {
&temp_def_list, &temp_def_list,
unifier, unifier,
primitives_store, primitives_store,
e e,
) )
}) })
.collect::<Result<Vec<_>, _>>()?; .collect::<Result<Vec<_>, _>>()?;
@ -751,11 +773,14 @@ impl TopLevelComposer {
&value.node, &value.node,
ast::ExprKind::Name { id, .. } if id == "Generic" ast::ExprKind::Name { id, .. } if id == "Generic"
) )
) { continue } ) {
continue;
}
if has_base { if has_base {
return Err("a class def can only have at most one base class \ 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; has_base = true;
@ -764,14 +789,16 @@ impl TopLevelComposer {
&temp_def_list, &temp_def_list,
self.unifier.borrow_mut(), self.unifier.borrow_mut(),
&self.primitives_ty, &self.primitives_ty,
b b,
)?; )?;
if let TypeAnnotation::ConcretizedCustomClassKind { .. } = base_ty { if let TypeAnnotation::ConcretizedCustomClassKind { .. } = base_ty {
// TODO: check to prevent cyclic base class // TODO: check to prevent cyclic base class
class_ancestors.push(base_ty); class_ancestors.push(base_ty);
} else { } 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()
);
} }
} }
} }
@ -793,7 +820,7 @@ impl TopLevelComposer {
&temp_def_list, &temp_def_list,
unifier, unifier,
primitives, primitives,
&mut type_var_to_concrete_def &mut type_var_to_concrete_def,
)? )?
} }
@ -802,7 +829,8 @@ impl TopLevelComposer {
// unification of previously assigned typevar // unification of previously assigned typevar
for (ty, def) in type_var_to_concrete_def { 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)?; unifier.unify(ty, target_ty)?;
} }
@ -832,15 +860,16 @@ impl TopLevelComposer {
let function_resolver = resolver.deref(); let function_resolver = resolver.deref();
let arg_types = { let arg_types = {
args args.args
.args
.iter() .iter()
.map(|x| -> Result<FuncArg, String> { .map(|x| -> Result<FuncArg, String> {
let annotation = x let annotation = x
.node .node
.annotation .annotation
.as_ref() .as_ref()
.ok_or_else(|| "function parameter type annotation needed".to_string())? .ok_or_else(|| {
"function parameter type annotation needed".to_string()
})?
.as_ref(); .as_ref();
Ok(FuncArg { Ok(FuncArg {
name: x.node.arg.clone(), name: x.node.arg.clone(),
@ -848,10 +877,10 @@ impl TopLevelComposer {
temp_def_list.as_slice(), temp_def_list.as_slice(),
unifier, unifier,
primitives_store, primitives_store,
annotation annotation,
)?, )?,
// TODO: function type var // TODO: function type var
default_value: Default::default() default_value: Default::default(),
}) })
}) })
.collect::<Result<Vec<_>, _>>()? .collect::<Result<Vec<_>, _>>()?
@ -866,16 +895,19 @@ impl TopLevelComposer {
temp_def_list.as_slice(), temp_def_list.as_slice(),
unifier, unifier,
primitives_store, primitives_store,
return_annotation return_annotation,
)? )?
}; };
let function_ty = unifier.add_ty(TypeEnum::TFunc(FunSignature { let function_ty = unifier.add_ty(TypeEnum::TFunc(
FunSignature {
args: arg_types, args: arg_types,
ret: return_ty, ret: return_ty,
// TODO: handle var map // TODO: handle var map
vars: Default::default() vars: Default::default(),
}.into())); }
.into(),
));
unifier.unify(*dummy_ty, function_ty)?; unifier.unify(*dummy_ty, function_ty)?;
} else { } else {
unreachable!("must be both function"); unreachable!("must be both function");
@ -883,7 +915,7 @@ impl TopLevelComposer {
} else { } else {
continue; continue;
} }
}; }
Ok(()) Ok(())
} }
@ -899,7 +931,7 @@ impl TopLevelComposer {
temp_def_list: &[Arc<RwLock<TopLevelDef>>], temp_def_list: &[Arc<RwLock<TopLevelDef>>],
unifier: &mut Unifier, unifier: &mut Unifier,
primitives: &PrimitiveStore, primitives: &PrimitiveStore,
type_var_to_concrete_def: &mut HashMap<Type, TypeAnnotation> type_var_to_concrete_def: &mut HashMap<Type, TypeAnnotation>,
) -> Result<(), String> { ) -> Result<(), String> {
let mut class_def = class_def.write(); let mut class_def = class_def.write();
let ( let (
@ -920,9 +952,20 @@ impl TopLevelComposer {
resolver, resolver,
type_vars, type_vars,
.. ..
} = class_def.deref_mut() { } = class_def.deref_mut()
{
if let ast::StmtKind::ClassDef { name, bases, body, .. } = &class_ast { 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 { } else {
unreachable!("here must be class def ast"); unreachable!("here must be class def ast");
} }
@ -935,12 +978,13 @@ impl TopLevelComposer {
for b in class_body_ast { for b in class_body_ast {
if let ast::StmtKind::FunctionDef { args, returns, name, body, .. } = &b.node { 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 self arg
// TODO: handle parameter with same name // TODO: handle parameter with same name
let arg_type: Vec<FuncArg> = { let arg_type: Vec<FuncArg> = {
let mut result = Vec::new(); let mut result = Vec::new();
for x in &args.args{ for x in &args.args {
let name = x.node.arg.clone(); let name = x.node.arg.clone();
let type_ann = { let type_ann = {
let annotation_expr = x let annotation_expr = x
@ -954,7 +998,7 @@ impl TopLevelComposer {
temp_def_list, temp_def_list,
unifier, unifier,
primitives, primitives,
annotation_expr annotation_expr,
)? )?
}; };
if let TypeAnnotation::TypeVarKind(_ty) = &type_ann { if let TypeAnnotation::TypeVarKind(_ty) = &type_ann {
@ -965,7 +1009,7 @@ impl TopLevelComposer {
name, name,
ty: unifier.get_fresh_var().0, ty: unifier.get_fresh_var().0,
// TODO: symbol default value? // TODO: symbol default value?
default_value: None default_value: None,
}; };
// push the dummy type and the type annotation // push the dummy type and the type annotation
// into the list for later unification // into the list for later unification
@ -984,7 +1028,7 @@ impl TopLevelComposer {
temp_def_list, temp_def_list,
unifier, unifier,
primitives, primitives,
result result,
)?; )?;
let dummy_return_type = unifier.get_fresh_var().0; let dummy_return_type = unifier.get_fresh_var().0;
type_var_to_concrete_def.insert(dummy_return_type, annotation.clone()); 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 // TODO: handle var map, to create a new copy of type var
// while tracking the type var associated with class // while tracking the type var associated with class
let method_var_map: HashMap<u32, Type> = HashMap::new(); let method_var_map: HashMap<u32, Type> = HashMap::new();
let method_type = unifier.add_ty(TypeEnum::TFunc(FunSignature { let method_type = unifier.add_ty(TypeEnum::TFunc(
args: arg_type, FunSignature { args: arg_type, ret: ret_type, vars: method_var_map }.into(),
ret: ret_type, ));
vars: method_var_map
}.into()));
// unify now since function type is not in type annotation define // unify now since function type is not in type annotation define
// which is fine since type within method_type will be subst later // which is fine since type within method_type will be subst later
unifier.unify(method_dummy_ty, method_type)?; unifier.unify(method_dummy_ty, method_type)?;
@ -1007,9 +1049,12 @@ impl TopLevelComposer {
for b in body { for b in body {
let mut defined_fields: HashSet<String> = HashSet::new(); let mut defined_fields: HashSet<String> = HashSet::new();
// TODO: check the type of value, field instantiation check // 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 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()) { if defined_fields.insert(attr.to_string()) {
let dummy_field_type = unifier.get_fresh_var().0; let dummy_field_type = unifier.get_fresh_var().0;
class_fields_def.push((attr.to_string(), dummy_field_type)); class_fields_def.push((attr.to_string(), dummy_field_type));
@ -1018,9 +1063,10 @@ impl TopLevelComposer {
&temp_def_list, &temp_def_list,
unifier, unifier,
primitives, 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 { } else {
return Err("same class fields defined twice".into()); return Err("same class fields defined twice".into());
} }
@ -1032,13 +1078,13 @@ impl TopLevelComposer {
} else { } else {
continue; continue;
} }
}; }
Ok(()) Ok(())
} }
fn get_class_method_def_info( fn get_class_method_def_info(
class_methods_def: &[(String, Type, DefinitionId)], class_methods_def: &[(String, Type, DefinitionId)],
method_name: &str method_name: &str,
) -> Result<(Type, DefinitionId), String> { ) -> Result<(Type, DefinitionId), String> {
for (name, ty, def_id) in class_methods_def { for (name, ty, def_id) in class_methods_def {
if name == method_name { if name == 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> { 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. /// 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())); assert_eq!(env.unifier.unify(a, b), Err("Cannot unify var3 with var2".to_string()));
env.unifier.unify(list_a, list_x).unwrap(); env.unifier.unify(list_a, list_x).unwrap();
assert_eq!( assert_eq!(env.unifier.unify(list_x, list_int), Err("Cannot unify 0 with var2".to_string()));
env.unifier.unify(list_x, list_int),
Err("Cannot unify 0 with var2".to_string())
);
env.unifier.replace_rigid_var(a, int); env.unifier.replace_rigid_var(a, int);
env.unifier.unify(list_x, list_int).unwrap(); env.unifier.unify(list_x, list_int).unwrap();