nac3core/src/codegen/expr.rs

@@ -3236,9 +3236,6 @@ pub fn gen_expr<'ctx, G: CodeGenerator>(
                     let Some(val) = generator.gen_expr(ctx, value)? else { return Ok(None) };
 
                     // Handle Class Method calls
-                    // The attribute will be `DefinitionId` of the method if the call is to one of the parent methods
-                    let func_id = attr.to_string().parse::<usize>();
-
                     let id = if let TypeEnum::TObj { obj_id, .. } =
                         &*ctx.unifier.get_ty(value.custom.unwrap())
                     {
@@ -3246,11 +3243,7 @@ pub fn gen_expr<'ctx, G: CodeGenerator>(
                     } else {
                         codegen_unreachable!(ctx)
                     };
-
+                    let fun_id = {
-                    // Use the `DefinitionID` from attribute if it is available
-                    let fun_id = if let Ok(func_id) = func_id {
-                        DefinitionId(func_id)
-                    } else {
                         let defs = ctx.top_level.definitions.read();
                         let obj_def = defs.get(id.0).unwrap().read();
                         let TopLevelDef::Class { methods, .. } = &*obj_def else {

nac3core/src/toplevel/composer.rs

@@ -23,7 +23,7 @@ impl Default for ComposerConfig {
     }
 }
 
-pub type DefAst = (Arc<RwLock<TopLevelDef>>, Option<Stmt<()>>);
+type DefAst = (Arc<RwLock<TopLevelDef>>, Option<Stmt<()>>);
 pub struct TopLevelComposer {
     // list of top level definitions, same as top level context
     pub definition_ast_list: Vec<DefAst>,
@@ -1822,12 +1822,7 @@ impl TopLevelComposer {
                         if *name != init_str_id {
                             unreachable!("must be init function here")
                         }
-
+                        let all_inited = Self::get_all_assigned_field(body.as_slice())?;
-                        let all_inited = Self::get_all_assigned_field(
-                            object_id.0,
-                            definition_ast_list,
-                            body.as_slice(),
-                        )?;
                         for (f, _, _) in fields {
                             if !all_inited.contains(f) {
                                 return Err(HashSet::from([

nac3core/src/toplevel/helper.rs

@@ -3,7 +3,6 @@ use std::convert::TryInto;
 use crate::symbol_resolver::SymbolValue;
 use crate::toplevel::numpy::unpack_ndarray_var_tys;
 use crate::typecheck::typedef::{into_var_map, iter_type_vars, Mapping, TypeVarId, VarMap};
-use ast::ExprKind;
 use nac3parser::ast::{Constant, Location};
 use strum::IntoEnumIterator;
 use strum_macros::EnumIter;
@@ -734,16 +733,7 @@ impl TopLevelComposer {
         )
     }
 
-    /// This function returns the fields that have been initialized in the `__init__` function of a class
+    pub fn get_all_assigned_field(stmts: &[Stmt<()>]) -> Result<HashSet<StrRef>, HashSet<String>> {
-    /// The function takes as input:
-    ///  * `class_id`: The `object_id` of the class whose function is being evaluated (check `TopLevelDef::Class`)
-    ///  * `definition_ast_list`: A list of ast definitions and statements defined in `TopLevelComposer`
-    ///  * `stmts`: The body of function being parsed. Each statment is analyzed to check varaible initialization statements
-    pub fn get_all_assigned_field(
-        class_id: usize,
-        definition_ast_list: &Vec<DefAst>,
-        stmts: &[Stmt<()>],
-    ) -> Result<HashSet<StrRef>, HashSet<String>> {
         let mut result = HashSet::new();
         for s in stmts {
             match &s.node {
@@ -779,138 +769,30 @@ impl TopLevelComposer {
                 // TODO: do not check for For and While?
                 ast::StmtKind::For { body, orelse, .. }
                 | ast::StmtKind::While { body, orelse, .. } => {
-                    result.extend(Self::get_all_assigned_field(
+                    result.extend(Self::get_all_assigned_field(body.as_slice())?);
-                        class_id,
+                    result.extend(Self::get_all_assigned_field(orelse.as_slice())?);
-                        definition_ast_list,
-                        body.as_slice(),
-                    )?);
-                    result.extend(Self::get_all_assigned_field(
-                        class_id,
-                        definition_ast_list,
-                        orelse.as_slice(),
-                    )?);
                 }
                 ast::StmtKind::If { body, orelse, .. } => {
-                    let inited_for_sure = Self::get_all_assigned_field(
+                    let inited_for_sure = Self::get_all_assigned_field(body.as_slice())?
-                        class_id,
+                        .intersection(&Self::get_all_assigned_field(orelse.as_slice())?)
-                        definition_ast_list,
+                        .copied()
-                        body.as_slice(),
+                        .collect::<HashSet<_>>();
-                    )?
-                    .intersection(&Self::get_all_assigned_field(
-                        class_id,
-                        definition_ast_list,
-                        orelse.as_slice(),
-                    )?)
-                    .copied()
-                    .collect::<HashSet<_>>();
                     result.extend(inited_for_sure);
                 }
                 ast::StmtKind::Try { body, orelse, finalbody, .. } => {
-                    let inited_for_sure = Self::get_all_assigned_field(
+                    let inited_for_sure = Self::get_all_assigned_field(body.as_slice())?
-                        class_id,
+                        .intersection(&Self::get_all_assigned_field(orelse.as_slice())?)
-                        definition_ast_list,
+                        .copied()
-                        body.as_slice(),
+                        .collect::<HashSet<_>>();
-                    )?
-                    .intersection(&Self::get_all_assigned_field(
-                        class_id,
-                        definition_ast_list,
-                        orelse.as_slice(),
-                    )?)
-                    .copied()
-                    .collect::<HashSet<_>>();
                     result.extend(inited_for_sure);
-                    result.extend(Self::get_all_assigned_field(
+                    result.extend(Self::get_all_assigned_field(finalbody.as_slice())?);
-                        class_id,
-                        definition_ast_list,
-                        finalbody.as_slice(),
-                    )?);
                 }
                 ast::StmtKind::With { body, .. } => {
-                    result.extend(Self::get_all_assigned_field(
+                    result.extend(Self::get_all_assigned_field(body.as_slice())?);
-                        class_id,
-                        definition_ast_list,
-                        body.as_slice(),
-                    )?);
-                }
-                // Variables Initialized in function calls
-                ast::StmtKind::Expr { value, .. } => {
-                    let ExprKind::Call { func, .. } = &value.node else {
-                        continue;
-                    };
-                    let ExprKind::Attribute { value, attr, .. } = &func.node else {
-                        continue;
-                    };
-                    let ExprKind::Name { id, .. } = &value.node else {
-                        continue;
-                    };
-                    // Need to consider the two cases:
-                    //  Case 1) Call to class function i.e. id = `self`
-                    //  Case 2) Call to class ancestor function i.e. id = ancestor_name
-                    // We leave checking whether function in case 2 belonged to class ancestor or not to type checker
-                    //
-                    // According to current handling of `self`, function definition are fixed and do not change regardless
-                    // of which object is passed as `self` i.e. virtual polymorphism is not supported
-                    // Therefore, we change class id for case 2 to reflect behavior of our compiler
-
-                    let class_name = if *id == "self".into() {
-                        let ast::StmtKind::ClassDef { name, .. } =
-                            &definition_ast_list[class_id].1.as_ref().unwrap().node
-                        else {
-                            unreachable!()
-                        };
-                        name
-                    } else {
-                        id
-                    };
-
-                    let parent_method = definition_ast_list.iter().find_map(|def| {
-                        let (
-                            class_def,
-                            Some(ast::Located {
-                                node: ast::StmtKind::ClassDef { name, body, .. },
-                                ..
-                            }),
-                        ) = &def
-                        else {
-                            return None;
-                        };
-                        let TopLevelDef::Class { object_id: class_id, .. } = &*class_def.read()
-                        else {
-                            unreachable!()
-                        };
-
-                        if name == class_name {
-                            body.iter().find_map(|m| {
-                                let ast::StmtKind::FunctionDef { name, body, .. } = &m.node else {
-                                    return None;
-                                };
-                                if *name == *attr {
-                                    return Some((body.clone(), class_id.0));
-                                }
-                                None
-                            })
-                        } else {
-                            None
-                        }
-                    });
-
-                    // If method body is none then method does not exist
-                    if let Some((method_body, class_id)) = parent_method {
-                        result.extend(Self::get_all_assigned_field(
-                            class_id,
-                            definition_ast_list,
-                            method_body.as_slice(),
-                        )?);
-                    } else {
-                        return Err(HashSet::from([format!(
-                            "{}.{} not found in class {class_name} at {}",
-                            *id, *attr, value.location
-                        )]));
-                    }
                 }
                 ast::StmtKind::Pass { .. }
                 | ast::StmtKind::Assert { .. }
-                | ast::StmtKind::AnnAssign { .. } => {}
+                | ast::StmtKind::Expr { .. } => {}
 
                 _ => {
                     unimplemented!()

nac3core/src/typecheck/type_inferencer/mod.rs

@@ -12,7 +12,6 @@ use super::{
         RecordField, RecordKey, Type, TypeEnum, TypeVar, Unifier, VarMap,
     },
 };
-use crate::toplevel::type_annotation::TypeAnnotation;
 use crate::{
     symbol_resolver::{SymbolResolver, SymbolValue},
     toplevel::{
@@ -103,7 +102,6 @@ pub struct Inferencer<'a> {
 }
 
 type InferenceError = HashSet<String>;
-type OverrideResult = Result<Option<ast::Expr<Option<Type>>>, InferenceError>;
 
 struct NaiveFolder();
 impl Fold<()> for NaiveFolder {
@@ -1674,86 +1672,6 @@ impl<'a> Inferencer<'a> {
         Ok(None)
     }
 
-    /// Checks whether a class method is calling parent function
-    /// Returns [`None`] if its not a call to parent method, otherwise
-    /// returns a new `func` with class name replaced by `self` and method resolved to its `DefinitionID`
-    ///
-    /// e.g.  A.f1(self, ...) returns Some(self.{DefintionID(f1)})
-    fn check_overriding(&mut self, func: &ast::Expr<()>, args: &[ast::Expr<()>]) -> OverrideResult {
-        // `self` must be first argument for call to parent method
-        if let Some(Located { node: ExprKind::Name { id, .. }, .. }) = &args.first() {
-            if *id != "self".into() {
-                return Ok(None);
-            }
-        } else {
-            return Ok(None);
-        }
-
-        let Located {
-            node: ExprKind::Attribute { value, attr: method_name, ctx }, location, ..
-        } = func
-        else {
-            return Ok(None);
-        };
-        let ExprKind::Name { id: class_name, ctx: class_ctx } = &value.node else {
-            return Ok(None);
-        };
-        let zelf = &self.fold_expr(args[0].clone())?;
-
-        // Check whether the method belongs to class ancestors
-        let def_id = self.unifier.get_ty(zelf.custom.unwrap());
-        let TypeEnum::TObj { obj_id, .. } = def_id.as_ref() else { unreachable!() };
-        let defs = self.top_level.definitions.read();
-        let res = {
-            if let TopLevelDef::Class { ancestors, .. } = &*defs[obj_id.0].read() {
-                let res = ancestors.iter().find_map(|f| {
-                    let TypeAnnotation::CustomClass { id, .. } = f else { unreachable!() };
-                    let TopLevelDef::Class { name, methods, .. } = &*defs[id.0].read() else {
-                        unreachable!()
-                    };
-                    // Class names are stored as `__module__.class`
-                    let name = name.to_string();
-                    let (_, name) = name.rsplit_once('.').unwrap();
-                    if name == class_name.to_string() {
-                        return methods.iter().find_map(|f| {
-                            if f.0 == *method_name {
-                                return Some(*f);
-                            }
-                            None
-                        });
-                    }
-                    None
-                });
-                res
-            } else {
-                None
-            }
-        };
-
-        match res {
-            Some(r) => {
-                let mut new_func = func.clone();
-                let mut new_value = value.clone();
-                new_value.node = ExprKind::Name { id: "self".into(), ctx: *class_ctx };
-                new_func.node =
-                    ExprKind::Attribute { value: new_value.clone(), attr: *method_name, ctx: *ctx };
-
-                let mut new_func = self.fold_expr(new_func)?;
-
-                let ExprKind::Attribute { value, .. } = new_func.node else { unreachable!() };
-                new_func.node =
-                    ExprKind::Attribute { value, attr: r.2 .0.to_string().into(), ctx: *ctx };
-                new_func.custom = Some(r.1);
-
-                Ok(Some(new_func))
-            }
-            None => report_error(
-                format!("Ancestor method [{class_name}.{method_name}] should be defined with same decorator as its overridden version").as_str(),
-                *location,
-            ),
-        }
-    }
-
     fn fold_call(
         &mut self,
         location: Location,
@@ -1767,20 +1685,8 @@ impl<'a> Inferencer<'a> {
             return Ok(spec_call_func);
         }
 
-        // Check for call to parent method
+        let func = Box::new(self.fold_expr(func)?);
-        let override_res = self.check_overriding(&func, &args)?;
+        let args = args.into_iter().map(|v| self.fold_expr(v)).collect::<Result<Vec<_>, _>>()?;
-        let is_override = override_res.is_some();
-        let func = if is_override { override_res.unwrap() } else { self.fold_expr(func)? };
-        let func = Box::new(func);
-
-        let mut args =
-            args.into_iter().map(|v| self.fold_expr(v)).collect::<Result<Vec<_>, _>>()?;
-
-        // TODO: Handle passing of self to functions to allow runtime lookup of functions to be called
-        // Currently removing `self` and using compile time function definitions
-        if is_override {
-            args.remove(0);
-        }
         let keywords = keywords
             .into_iter()
             .map(|v| fold::fold_keyword(self, v))

nac3standalone/demo/src/inheritance.py

@@ -10,58 +10,23 @@ class A:
     def __init__(self, a: int32):
         self.a = a
     
-    def output_all_fields(self):
+    def f1(self):
-        output_int32(self.a)
+        self.f2()
     
-    def set_a(self, a: int32):
+    def f2(self):
-        self.a = a
+        output_int32(self.a)
 
 class B(A):
     b: int32
 
     def __init__(self, b: int32):
-        A.__init__(self, b + 1)
+        self.a = b + 1
-        self.set_b(b)
-    
-    def output_parent_fields(self):
-        A.output_all_fields(self)
-
-    def output_all_fields(self):
-        A.output_all_fields(self)
-        output_int32(self.b)
-    
-    def set_b(self, b: int32):
         self.b = b
 
-class C(B):
-    c: int32
-
-    def __init__(self, c: int32):
-        B.__init__(self, c + 1)
-        self.c = c
-    
-    def output_parent_fields(self):
-        B.output_all_fields(self)
-
-    def output_all_fields(self):
-        B.output_all_fields(self)
-        output_int32(self.c)
-    
-    def set_c(self, c: int32):
-        self.c = c
 
 def run() -> int32:
-    ccc = C(10)
+    aaa = A(5)
-    ccc.output_all_fields()
+    bbb = B(2)
-    ccc.set_a(1)
+    aaa.f1()
-    ccc.set_b(2)
+    bbb.f1()
-    ccc.set_c(3)
-    ccc.output_all_fields()
-
-    bbb = B(10)
-    bbb.set_a(9)
-    bbb.set_b(8)
-    bbb.output_all_fields()
-    ccc.output_all_fields()
-
     return 0