forked from M-Labs/nac3
nac3core/toplevel/composer: fixes #29
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@ -417,6 +417,11 @@ impl TopLevelComposer {
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/// now that the type vars of all classes are done, handle base classes and
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/// put Self class into the ancestors list. We only allow single inheritance
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fn analyze_top_level_class_bases(&mut self) -> Result<(), String> {
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if self.unifier.top_level.is_none() {
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let ctx = Arc::new(self.make_top_level_context());
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self.unifier.top_level = Some(ctx);
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}
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let temp_def_list = self.extract_def_list();
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let unifier = self.unifier.borrow_mut();
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@ -765,7 +770,9 @@ impl TopLevelComposer {
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FunSignature { args: arg_types, ret: return_ty, vars: function_var_map }
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.into(),
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));
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unifier.unify(*dummy_ty, function_ty)?;
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unifier
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.unify(*dummy_ty, function_ty)
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.map_err(|old| format!("{} at {}", old, function_ast.location))?;
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} else {
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unreachable!("must be both function");
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}
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@ -1175,7 +1182,7 @@ impl TopLevelComposer {
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fn analyze_function_instance(&mut self) -> Result<(), String> {
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// first get the class contructor type correct for the following type check in function body
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// also do class field instantiation check
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for (def, _) in self.definition_ast_list.iter().skip(self.built_in_num) {
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for (def, ast) in self.definition_ast_list.iter().skip(self.built_in_num) {
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let class_def = def.read();
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if let TopLevelDef::Class {
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constructor,
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@ -1217,7 +1224,9 @@ impl TopLevelComposer {
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FunSignature { args: contor_args, ret: self_type, vars: contor_type_vars }
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.into(),
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));
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self.unifier.unify(constructor.unwrap(), contor_type)?;
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self.unifier
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.unify(constructor.unwrap(), contor_type)
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.map_err(|old| format!("{} at {}", old, ast.as_ref().unwrap().location))?;
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// class field instantiation check
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if let (Some(init_id), false) = (init_id, fields.is_empty()) {
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@ -1239,6 +1248,7 @@ impl TopLevelComposer {
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}
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}
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let ctx = Arc::new(self.make_top_level_context());
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// type inference inside function body
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for (id, (def, ast)) in self.definition_ast_list.iter().enumerate().skip(self.built_in_num)
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{
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@ -1334,7 +1344,7 @@ impl TopLevelComposer {
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};
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let mut calls: HashMap<CodeLocation, CallId> = HashMap::new();
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let mut inferencer = Inferencer {
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top_level: &self.make_top_level_context(),
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top_level: ctx.as_ref(),
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defined_identifiers: identifiers.clone(),
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function_data: &mut FunctionData {
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resolver: resolver.as_ref().unwrap().clone(),
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