forked from M-Labs/nac3
nac3core: fixed typevar bug
This commit is contained in:
parent
93af337ed3
commit
35ac5cb6f6
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@ -503,7 +503,7 @@ impl InnerResolver {
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Ok(s) => s,
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Err(e) => return Ok(Err(e)),
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};
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return match (&*unifier.get_ty(extracted_ty), inst_check) {
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match (&*unifier.get_ty(extracted_ty), inst_check) {
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// do the instantiation for these three types
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(TypeEnum::TList { ty }, false) => {
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let len: usize = self.helper.len_fn.call1(py, (obj,))?.extract(py)?;
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@ -538,22 +538,9 @@ impl InnerResolver {
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let types = types?;
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Ok(types.map(|types| unifier.add_ty(TypeEnum::TTuple { ty: types })))
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}
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(TypeEnum::TObj { params, fields, .. }, false) => {
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(TypeEnum::TObj { params: var_map, fields, .. }, false) => {
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self.pyid_to_type.write().insert(ty_id, extracted_ty);
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let mut instantiate_obj = || {
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let var_map = params
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.iter()
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.map(|(id_var, ty)| {
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if let TypeEnum::TVar { id, range, name, loc, .. } =
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&*unifier.get_ty(*ty)
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{
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assert_eq!(*id, *id_var);
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(*id, unifier.get_fresh_var_with_range(range, *name, *loc).0)
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} else {
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unreachable!()
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}
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})
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.collect::<HashMap<_, _>>();
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// loop through non-function fields of the class to get the instantiated value
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for field in fields.iter() {
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let name: String = (*field.0).into();
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@ -590,7 +577,7 @@ impl InnerResolver {
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return Ok(Err("object is not of concrete type".into()));
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}
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}
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Ok(Ok(unifier.subst(extracted_ty, &var_map).unwrap_or(extracted_ty)))
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Ok(Ok(extracted_ty))
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};
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let result = instantiate_obj();
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// do not cache the type if there are errors
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@ -600,7 +587,7 @@ impl InnerResolver {
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result
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}
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_ => Ok(Ok(extracted_ty)),
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};
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}
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}
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fn get_obj_value<'ctx, 'a>(
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@ -919,6 +906,7 @@ impl SymbolResolver for Resolver {
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})
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.unwrap(),
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};
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println!("{:?}", result);
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if let Ok(t) = &result {
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self.0.id_to_type.write().insert(str, *t);
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}
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@ -229,10 +229,10 @@ pub fn parse_type_annotation<T>(
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Err(format!("Cannot use function name as type at {}", loc))
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}
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}
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Err(e) => {
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Err(_) => {
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let ty = resolver
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.get_symbol_type(unifier, top_level_defs, primitives, *id)
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.map_err(|_| format!("Unknown type annotation at {}: {}", loc, e))?;
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.map_err(|e| format!("Unknown type annotation at {}: {}", loc, e))?;
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if let TypeEnum::TVar { .. } = &*unifier.get_ty(ty) {
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Ok(ty)
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} else {
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@ -1,4 +1,5 @@
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use nac3parser::ast::fold::Fold;
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use std::rc::Rc;
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use crate::{
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codegen::{expr::get_subst_key, stmt::exn_constructor},
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@ -1192,18 +1193,9 @@ impl TopLevelComposer {
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unreachable!("must be type var annotation");
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}
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}
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let dummy_return_type = unifier.get_dummy_var().0;
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type_var_to_concrete_def.insert(dummy_return_type, annotation.clone());
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dummy_return_type
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get_type_from_type_annotation_kinds(temp_def_list, unifier, primitives, &annotation)?
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} else {
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// if do not have return annotation, return none
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// for uniform handling, still use type annoatation
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let dummy_return_type = unifier.get_dummy_var().0;
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type_var_to_concrete_def.insert(
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dummy_return_type,
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TypeAnnotation::Primitive(primitives.none),
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);
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dummy_return_type
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primitives.none
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}
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};
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@ -1449,6 +1441,34 @@ impl TopLevelComposer {
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let primitives_ty = &self.primitives_ty;
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let definition_ast_list = &self.definition_ast_list;
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let unifier = &mut self.unifier;
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// first, fix function typevar ids
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// they may be changed with our use of placeholders
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for (def, _) in definition_ast_list.iter().skip(self.builtin_num) {
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if let TopLevelDef::Function {
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signature,
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var_id,
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..
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} = &mut *def.write() {
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if let TypeEnum::TFunc(FunSignature { args, ret, vars }) =
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unifier.get_ty(*signature).as_ref() {
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let new_var_ids = vars.values().map(|v| match &*unifier.get_ty(*v) {
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TypeEnum::TVar{id, ..} => *id,
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_ => unreachable!(),
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}).collect_vec();
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if new_var_ids != *var_id {
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let new_signature = FunSignature {
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args: args.clone(),
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ret: ret.clone(),
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vars: new_var_ids.iter().zip(vars.values()).map(|(id, v)| (*id, v.clone())).collect(),
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};
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unifier.unification_table.set_value(*signature, Rc::new(TypeEnum::TFunc(new_signature)));
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*var_id = new_var_ids;
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}
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}
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}
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}
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let mut errors = HashSet::new();
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let mut analyze = |i, def: &Arc<RwLock<TopLevelDef>>, ast: &Option<Stmt>| {
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let class_def = def.read();
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@ -1650,7 +1670,6 @@ impl TopLevelComposer {
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// if class methods, `vars` also contains all class typevars here
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let (type_var_subst_comb, no_range_vars) = {
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let mut no_ranges: Vec<Type> = Vec::new();
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let var_ids = vars.keys().copied().collect_vec();
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let var_combs = vars
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.iter()
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.map(|(_, ty)| {
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@ -1669,7 +1688,7 @@ impl TopLevelComposer {
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.collect_vec();
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let mut result: Vec<HashMap<u32, Type>> = Default::default();
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for comb in var_combs {
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result.push(var_ids.clone().into_iter().zip(comb).collect());
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result.push(insted_vars.clone().into_iter().zip(comb).collect());
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}
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// NOTE: if is empty, means no type var, append a empty subst, ok to do this?
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if result.is_empty() {
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@ -105,8 +105,6 @@ pub fn parse_ast_to_type_annotation_kinds<T>(
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Ok(TypeAnnotation::CustomClass { id: obj_id, params: vec![] })
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} else if let Ok(ty) = resolver.get_symbol_type(unifier, top_level_defs, primitives, *id) {
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if let TypeEnum::TVar { .. } = unifier.get_ty(ty).as_ref() {
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let var = unifier.get_fresh_var(Some(*id), Some(expr.location)).0;
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unifier.unify(var, ty).unwrap();
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Ok(TypeAnnotation::TypeVar(ty))
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} else {
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Err(format!("`{}` is not a valid type annotation (at {})", id, expr.location))
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@ -156,9 +156,9 @@ pub type SharedUnifier = Arc<Mutex<(UnificationTable<TypeEnum>, u32, Vec<Call>)>
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#[derive(Clone)]
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pub struct Unifier {
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pub top_level: Option<Arc<TopLevelContext>>,
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unification_table: UnificationTable<Rc<TypeEnum>>,
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pub(super) calls: Vec<Rc<Call>>,
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pub(crate) top_level: Option<Arc<TopLevelContext>>,
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pub(crate) unification_table: UnificationTable<Rc<TypeEnum>>,
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pub(crate) calls: Vec<Rc<Call>>,
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var_id: u32,
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unify_cache: HashSet<(Type, Type)>,
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snapshot: Option<(usize, u32)>
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