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nac3core: keep checks for class constructors

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wylited 2022-04-13 15:57:21 +08:00
parent ef7a7f55ce
commit d8caaed2d1
1 changed files with 14 additions and 2 deletions
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16
nac3core/src/toplevel/composer.rs
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@ -167,7 +167,7 @@ impl TopLevelComposer {
) -> Result<(StrRef, DefinitionId, Option<Type>), String> { ) -> Result<(StrRef, DefinitionId, Option<Type>), String> {
let defined_names = &mut self.defined_names; let defined_names = &mut self.defined_names;
match &ast.node { match &ast.node {
ast::StmtKind::ClassDef { name: class_name, body, .. } => { ast::StmtKind::ClassDef { name: class_name, bases, body, .. } => {
if self.keyword_list.contains(class_name) { if self.keyword_list.contains(class_name) {
return Err(format!( return Err(format!(
"cannot use keyword `{}` as a class name (at {})", "cannot use keyword `{}` as a class name (at {})",
@ -221,9 +221,19 @@ impl TopLevelComposer {
// we do not push anything to the def list, so we keep track of the index // we do not push anything to the def list, so we keep track of the index
// and then push in the correct order after the for loop // and then push in the correct order after the for loop
let mut class_method_index_offset = 0; let mut class_method_index_offset = 0;
let init_id = "__init__".into();
let exception_id = "Exception".into();
// TODO: Fix this hack. We will generate constructor for classes that inherit
// from Exception class (directly or indirectly), but this code cannot handle
// subclass of other exception classes.
let mut contains_constructor = bases
.iter().any(|base| matches!(base.node, ast::ExprKind::Name { id, .. } if id == exception_id));
for b in body { for b in body {
if let ast::StmtKind::FunctionDef { name: method_name, .. } = &b.node { if let ast::StmtKind::FunctionDef { name: method_name, .. } = &b.node {
if method_name == &init_id {
contains_constructor = true;
}
if self.keyword_list.contains(method_name) { if self.keyword_list.contains(method_name) {
return Err(format!( return Err(format!(
"cannot use keyword `{}` as a method name (at {})", "cannot use keyword `{}` as a method name (at {})",
@ -289,7 +299,9 @@ impl TopLevelComposer {
self.definition_ast_list.push((def, Some(ast))); self.definition_ast_list.push((def, Some(ast)));
} }
let result_ty = Some(constructor_ty); // Quick way to fix #221, contains constructor can be used in the future for some implementation if required.
let result_ty = if contains_constructor { Some(constructor_ty) } else { Some(constructor_ty) };
Ok((class_name, DefinitionId(class_def_id), result_ty)) Ok((class_name, DefinitionId(class_def_id), result_ty))
} }