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nac3core/toplevel/composer: fixes #29

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pca006132 2021-09-25 22:02:19 +08:00
parent 693ac7d336
commit 3c121dfcda
1 changed files with 14 additions and 4 deletions
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18
nac3core/src/toplevel/composer.rs
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@ -417,6 +417,11 @@ impl TopLevelComposer {
/// now that the type vars of all classes are done, handle base classes and
/// put Self class into the ancestors list. We only allow single inheritance
fn analyze_top_level_class_bases(&mut self) -> Result<(), String> {
if self.unifier.top_level.is_none() {
let ctx = Arc::new(self.make_top_level_context());
self.unifier.top_level = Some(ctx);
}
let temp_def_list = self.extract_def_list();
let unifier = self.unifier.borrow_mut();
@ -765,7 +770,9 @@ impl TopLevelComposer {
FunSignature { args: arg_types, ret: return_ty, vars: function_var_map }
.into(),
));
unifier.unify(*dummy_ty, function_ty)?;
unifier
.unify(*dummy_ty, function_ty)
.map_err(|old| format!("{} at {}", old, function_ast.location))?;
} else {
unreachable!("must be both function");
}
@ -1175,7 +1182,7 @@ impl TopLevelComposer {
fn analyze_function_instance(&mut self) -> Result<(), String> {
// first get the class contructor type correct for the following type check in function body
// also do class field instantiation check
for (def, _) in self.definition_ast_list.iter().skip(self.built_in_num) {
for (def, ast) in self.definition_ast_list.iter().skip(self.built_in_num) {
let class_def = def.read();
if let TopLevelDef::Class {
constructor,
@ -1217,7 +1224,9 @@ impl TopLevelComposer {
FunSignature { args: contor_args, ret: self_type, vars: contor_type_vars }
.into(),
));
self.unifier.unify(constructor.unwrap(), contor_type)?;
self.unifier
.unify(constructor.unwrap(), contor_type)
.map_err(|old| format!("{} at {}", old, ast.as_ref().unwrap().location))?;
// class field instantiation check
if let (Some(init_id), false) = (init_id, fields.is_empty()) {
@ -1239,6 +1248,7 @@ impl TopLevelComposer {
}
}
let ctx = Arc::new(self.make_top_level_context());
// type inference inside function body
for (id, (def, ast)) in self.definition_ast_list.iter().enumerate().skip(self.built_in_num)
{
@ -1334,7 +1344,7 @@ impl TopLevelComposer {
};
let mut calls: HashMap<CodeLocation, CallId> = HashMap::new();
let mut inferencer = Inferencer {
top_level: &self.make_top_level_context(),
top_level: ctx.as_ref(),
defined_identifiers: identifiers.clone(),
function_data: &mut FunctionData {
resolver: resolver.as_ref().unwrap().clone(),