forked from M-Labs/nac3
split top level handling in several functions
This commit is contained in:
parent
d3ad894521
commit
d8c3c063ec
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@ -60,8 +60,6 @@ pub struct TopLevelContext {
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pub struct TopLevelComposer {
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// list of top level definitions, same as top level context
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pub definition_list: Arc<RwLock<Vec<RwLock<TopLevelDef>>>>,
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// list of top level Type, the index is same as the field `definition_list`
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pub ty_list: RwLock<Vec<Type>>,
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// list of top level ast, the index is same as the field `definition_list` and `ty_list`
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pub ast_list: RwLock<Vec<Option<ast::Stmt<()>>>>,
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// start as a primitive unifier, will add more top_level defs inside
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@ -70,6 +68,8 @@ pub struct TopLevelComposer {
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pub primitives: PrimitiveStore,
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// mangled class method name to def_id
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pub class_method_to_def_id: RwLock<HashMap<String, DefinitionId>>,
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// record the def id of the classes whoses fields and methods are to be analyzed
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pub to_be_analyzed_class: RwLock<Vec<DefinitionId>>,
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}
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impl TopLevelComposer {
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@ -133,21 +133,13 @@ impl TopLevelComposer {
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let ast_list: Vec<Option<ast::Stmt<()>>> = vec![None, None, None, None, None];
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let ty_list: Vec<Type> = vec![
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primitives.0.int32,
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primitives.0.int64,
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primitives.0.float,
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primitives.0.bool,
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primitives.0.none,
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];
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let composer = TopLevelComposer {
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definition_list: RwLock::new(top_level_def_list).into(),
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ty_list: RwLock::new(ty_list),
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ast_list: RwLock::new(ast_list),
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primitives: primitives.0,
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unifier: primitives.1.into(),
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class_method_to_def_id: Default::default(),
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to_be_analyzed_class: Default::default(),
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};
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(
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vec![
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@ -190,17 +182,20 @@ impl TopLevelComposer {
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}
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}
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/// step 0, register, just remeber the names of top level classes/function
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pub fn register_top_level(
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&mut self,
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ast: ast::Stmt<()>,
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resolver: Option<Arc<Mutex<dyn SymbolResolver + Send + Sync>>>,
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) -> Result<(String, DefinitionId, Type), String> {
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// get write access to the lists
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let (mut def_list, mut ty_list, mut ast_list) =
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(self.definition_list.write(), self.ty_list.write(), self.ast_list.write());
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) -> Result<(String, DefinitionId), String> {
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let (
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mut def_list,
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mut ast_list
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) = (
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self.definition_list.write(),
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self.ast_list.write()
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);
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// will be deleted after tested
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assert_eq!(ty_list.len(), def_list.len());
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assert_eq!(def_list.len(), ast_list.len());
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match &ast.node {
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@ -208,25 +203,17 @@ impl TopLevelComposer {
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let class_name = name.to_string();
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let class_def_id = def_list.len();
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// add the class to the unifier
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let ty = self.unifier.write().add_ty(TypeEnum::TObj {
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obj_id: DefinitionId(class_def_id),
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fields: Default::default(),
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params: Default::default(),
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});
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// add the class to the definition lists
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def_list
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.push(Self::make_top_level_class_def(class_def_id, resolver.clone()).into());
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ty_list.push(ty);
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// since later when registering class method, ast will still be used,
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// here push None temporarly, later will push the ast
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// here push None temporarly, later will move the ast inside
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ast_list.push(None);
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// parse class def body and register class methods into the def list.
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// module's symbol resolver would not know the name of the class methods,
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// thus cannot return their definition_id? so we have to manage it ourselves
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// by using the field `class_method_to_def_id`
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// by using `class_method_to_def_id`
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for b in body {
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if let ast::StmtKind::FunctionDef { name, .. } = &b.node {
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let fun_name = Self::name_mangling(class_name.clone(), name);
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@ -248,356 +235,297 @@ impl TopLevelComposer {
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)
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.into(),
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);
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ty_list.push(ty);
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// the ast of class method is in the class, push None in to the list here
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ast_list.push(None);
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// class method, do not let the symbol manager manage it, use our own map
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self.class_method_to_def_id.write().insert(fun_name, DefinitionId(def_id));
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// if it is the contructor, special handling is needed. In the above
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// handling, we still add __init__ function to the class method
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if name == "__init__" {
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// NOTE: how can this later be fetched?
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def_list.push(
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TopLevelDef::Initializer { class_id: DefinitionId(class_def_id) }
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.into(),
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);
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// arbitarily push one to make sure the index is correct
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ty_list.push(self.primitives.none);
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ast_list.push(None);
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}
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}
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}
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// move the ast to the entry of the class in the ast_list
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ast_list[class_def_id] = Some(ast);
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// return
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Ok((class_name, DefinitionId(class_def_id), ty))
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// put the constructor into the def_list
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def_list.push(
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TopLevelDef::Initializer { class_id: DefinitionId(class_def_id) }
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.into(),
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);
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ast_list.push(None);
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// class, put its def_id into the to be analyzed set
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let mut to_be_analyzed = self.to_be_analyzed_class.write();
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to_be_analyzed.push(DefinitionId(class_def_id));
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Ok((class_name, DefinitionId(class_def_id)))
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}
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ast::StmtKind::FunctionDef { name, .. } => {
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let fun_name = name.to_string();
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// add to the unifier
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let ty = self.unifier.write().add_ty(TypeEnum::TFunc(FunSignature {
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args: Default::default(),
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ret: self.primitives.none,
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vars: Default::default(),
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}));
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// add to the definition list
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def_list.push(
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Self::make_top_level_function_def(name.into(), self.primitives.none, resolver)
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.into(),
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);
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ty_list.push(ty);
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ast_list.push(Some(ast));
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// return
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Ok((fun_name, DefinitionId(def_list.len() - 1), ty))
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Ok((fun_name, DefinitionId(def_list.len() - 1)))
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}
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_ => Err("only registrations of top level classes/functions are supprted".into()),
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}
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}
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pub fn analyze_top_level_class_type_var(&mut self) -> Result<(), String> {
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/// step 1, analyze the type vars associated with top level class
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fn analyze_top_level_class_type_var(&mut self) -> Result<(), String> {
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let mut def_list = self.definition_list.write();
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let ty_list = self.ty_list.read();
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let ast_list = self.ast_list.read();
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let mut unifier = self.unifier.write();
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for (def, ty, ast) in def_list
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for (class_def, class_ast) in def_list
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.iter_mut()
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.zip(ty_list.iter())
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.zip(ast_list.iter())
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.map(|((x, y), z)| (x, y, z))
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.collect::<Vec<(&mut RwLock<TopLevelDef>, &Type, &Option<ast::Stmt<()>>)>>()
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{
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unimplemented!()
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}
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unimplemented!()
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}
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/// this should be called after all top level classes are registered, and
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/// will actually fill in those fields of the previous dummy one
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pub fn analyze_top_level(&mut self) -> Result<(), String> {
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let mut def_list = self.definition_list.write();
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let ty_list = self.ty_list.read();
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let ast_list = self.ast_list.read();
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let mut unifier = self.unifier.write();
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for (def, ty, ast) in def_list
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.iter_mut()
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.zip(ty_list.iter())
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.zip(ast_list.iter())
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.map(|((x, y), z)| (x, y, z))
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.collect::<Vec<(&mut RwLock<TopLevelDef>, &Type, &Option<ast::Stmt<()>>)>>()
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{
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// only analyze those entries with ast, and class_method(whose ast in class def)
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match ast {
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Some(ast::Located{node: ast::StmtKind::ClassDef {
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bases,
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body,
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name: class_name,
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.collect::<Vec<(&mut RwLock<TopLevelDef>, &Option<ast::Stmt<()>>)>>() {
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// only deal with class def here
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let (
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class_bases,
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class_def_type_vars,
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class_resolver
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) = {
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if let TopLevelDef::Class {
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type_vars,
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resolver,
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..
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}, .. }) => {
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// get the mutable reference of the entry in the
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// definition list, get the `TopLevelDef`
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let (
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def_ancestors,
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def_fields,
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def_methods,
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def_type_vars,
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resolver,
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) = if let TopLevelDef::Class {
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object_id: _,
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ancestors,
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fields,
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methods,
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type_vars,
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resolver: Some(resolver)
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} = def.get_mut() {
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(ancestors, fields, methods, type_vars, resolver.lock())
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} else { unreachable!() };
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// try to get mutable reference of the entry in the
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// unification table, get the `TypeEnum`
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let type_enum = unifier.get_ty(*ty);
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let (
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enum_params,
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enum_fields
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) = if let TypeEnum::TObj {
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params,
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fields,
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} = class_def.get_mut() {
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if let Some(ast::Located {node: ast::StmtKind::ClassDef {
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bases,
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..
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} = type_enum.borrow() {
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(params, fields)
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} else { unreachable!() };
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}, .. }) = class_ast {
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(bases, type_vars, resolver)
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} else { unreachable!("must be both class") }
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} else { continue }
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};
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// ancestors and typevars associate with the class are analyzed by looking
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// into the `bases` ast node
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// `Generic` should only occur once, use this flag
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let mut generic_occured = false;
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// TODO: haven't check this yet
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let mut occured_type_var: HashSet<Type> = Default::default();
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// TODO: haven't check this yet
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let mut occured_base: HashSet<DefinitionId> = Default::default();
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for b in bases {
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match &b.node {
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// analyze typevars bounded to the class,
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// only support things like `class A(Generic[T, V])`,
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// things like `class A(Generic[T, V, ImportedModule.T])` is not supported
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// i.e. only simple names are allowed in the subscript
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// should update the TopLevelDef::Class.typevars and the TypeEnum::TObj.params
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ast::ExprKind::Subscript {value, slice, ..} if {
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// can only be `Generic[...]` and this can only appear once
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if let ast::ExprKind::Name { id, .. } = &value.node {
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if id == "Generic" {
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if !generic_occured {
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generic_occured = true;
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true
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} else {
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return Err("Only single Generic[...] or Protocol[...] can be in bases".into())
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}
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} else { false }
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} else { false }
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} => {
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match &slice.node {
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// `class Foo(Generic[T, V, P]):` multiple element inside the subscript
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ast::ExprKind::Tuple {elts, ..} => {
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let tys = elts
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.iter()
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// here parse_type_annotation should be fine,
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// since we only expect type vars, which is not relevant
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// to the top-level parsing
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.map(|x| resolver.parse_type_annotation(
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&self.to_top_level_context(),
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unifier.borrow_mut(),
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&self.primitives,
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x))
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.collect::<Result<Vec<_>, _>>()?;
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let ty_var_ids = tys
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.iter()
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.map(|t| {
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let tmp = unifier.get_ty(*t);
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// make sure it is type var
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if let TypeEnum::TVar {id, ..} = tmp.as_ref() {
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Ok(*id)
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} else {
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Err("Expect type variabls here".to_string())
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}
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})
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.collect::<Result<Vec<_>, _>>()?;
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// write to TypeEnum
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for (id, ty) in ty_var_ids.iter().zip(tys.iter()) {
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enum_params.borrow_mut().insert(*id, *ty);
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}
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// write to TopLevelDef
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for ty in tys{
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def_type_vars.push(ty)
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}
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},
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// `class Foo(Generic[T]):`, only single element
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_ => {
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let ty = resolver.parse_type_annotation(
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&self.to_top_level_context(),
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unifier.borrow_mut(),
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&self.primitives,
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&slice
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)?;
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let ty_var_id = if let TypeEnum::TVar { id, .. } = unifier
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.get_ty(ty)
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.as_ref() { *id } else {
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return Err("Expect type variabls here".to_string())
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};
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// write to TypeEnum
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enum_params.borrow_mut().insert(ty_var_id, ty);
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// write to TopLevelDef
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def_type_vars.push(ty);
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},
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};
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}
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// analyze base classes, which is possible in
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// other cases, we parse for the base class
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// FIXME: calling parse_type_annotation here might cause some problem
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// when the base class is parametrized `BaseClass[int, bool]`, since the
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// analysis of type var of some class is not done yet.
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// we can first only look at the name, and later check the
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// parameter when others are done
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// Or
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// first get all the class' type var analyzed, and then
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// analyze the base class
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_ => {
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let ty = resolver.parse_type_annotation(
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&self.to_top_level_context(),
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unifier.borrow_mut(),
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&self.primitives,
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b
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)?;
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let obj_def_id = if let TypeEnum::TObj { obj_id, .. } = unifier
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.get_ty(ty)
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.as_ref() {
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*obj_id
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} else {
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return Err("Expect concrete classes/types here".into())
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};
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// write to TopLevelDef
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def_ancestors.push(obj_def_id);
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}
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}
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}
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// class method and field are analyzed by
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// looking into the class body ast node
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// NOTE: should consider parents' method and fields(check re-def and add),
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// but we do it later we go over these again after we finish analyze the
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// fields/methods as declared in the ast
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// method with same name should not occur twice, so use this
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let defined_method: HashSet<String> = Default::default();
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for stmt in body {
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if let ast::StmtKind::FunctionDef {
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name: func_name,
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args,
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body,
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returns,
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..
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} = &stmt.node {
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// build type enum, need FunSignature {args, vars, ret}
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// args. Now only args with no default TODO: other kinds of args
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let func_args = args.args
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let mut generic_occured = false;
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for b in class_bases {
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match &b.node {
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// analyze typevars bounded to the class,
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// only support things like `class A(Generic[T, V])`,
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// things like `class A(Generic[T, V, ImportedModule.T])` is not supported
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// i.e. only simple names are allowed in the subscript
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// should update the TopLevelDef::Class.typevars and the TypeEnum::TObj.params
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ast::ExprKind::Subscript {value, slice, ..} if {
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// can only be `Generic[...]` and this can only appear once
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if let ast::ExprKind::Name { id, .. } = &value.node {
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if id == "Generic" {
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if !generic_occured {
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generic_occured = true;
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true
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} else {
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return Err("Only single Generic[...] can be in bases".into())
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}
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} else { false }
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} else { false }
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} => {
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// if `class A(Generic[T, V, G])`
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if let ast::ExprKind::Tuple { elts, .. } = &slice.node {
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// parse the type vars
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let type_vars = elts
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.iter()
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.map(|x| -> Result<FuncArg, String> {
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Ok(FuncArg {
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name: x.node.arg.clone(),
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ty: resolver.parse_type_annotation(
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.map(|e|
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class_resolver
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.as_ref()
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.unwrap()
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.lock()
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.parse_type_annotation(
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&self.to_top_level_context(),
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unifier.borrow_mut(),
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&self.primitives,
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x
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.node
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.annotation
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.as_ref()
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.ok_or_else(|| "type annotations required for function parameters".to_string())?
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)?,
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default_value: None
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})
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})
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.collect::<Result<Vec<FuncArg>, _>>()?;
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// vars. find TypeVars used in the argument type annotation
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let func_vars = func_args
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e)
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)
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.collect::<Result<Vec<_>, _>>()?;
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// check if all are unique type vars
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let mut occured_type_var_id: HashSet<u32> = HashSet::new();
|
||||
let all_unique_type_var = type_vars
|
||||
.iter()
|
||||
.filter_map(|FuncArg { ty, .. } | {
|
||||
if let TypeEnum::TVar { id, .. } = unifier.get_ty(*ty).as_ref() {
|
||||
Some((*id, *ty))
|
||||
} else { None }
|
||||
})
|
||||
.collect::<HashMap<u32, Type>>();
|
||||
// return type
|
||||
let func_ret = resolver
|
||||
.parse_type_annotation(
|
||||
.all(|x| {
|
||||
let ty = unifier.get_ty(*x);
|
||||
if let TypeEnum::TVar {id, ..} = ty.as_ref() {
|
||||
occured_type_var_id.insert(*id)
|
||||
} else { false }
|
||||
});
|
||||
|
||||
if !all_unique_type_var { return Err("expect unique type variables".into()) }
|
||||
|
||||
// add to TopLevelDef
|
||||
class_def_type_vars.extend(type_vars);
|
||||
|
||||
// `class A(Generic[T])`
|
||||
} else {
|
||||
let ty =
|
||||
class_resolver
|
||||
.as_ref()
|
||||
.unwrap()
|
||||
.lock()
|
||||
.parse_type_annotation(
|
||||
&self.to_top_level_context(),
|
||||
unifier.borrow_mut(),
|
||||
&self.primitives,
|
||||
returns
|
||||
.as_ref()
|
||||
.ok_or_else(|| "return type annotations required here".to_string())?
|
||||
.as_ref(),
|
||||
&slice
|
||||
)?;
|
||||
// build the TypeEnum
|
||||
let func_type_sig = FunSignature {
|
||||
args: func_args,
|
||||
vars: func_vars,
|
||||
ret: func_ret
|
||||
};
|
||||
// check if it is type var
|
||||
let is_type_var = matches!(
|
||||
unifier.get_ty(ty).as_ref(),
|
||||
&TypeEnum::TVar { .. }
|
||||
);
|
||||
if !is_type_var { return Err("expect type variable here".into()) }
|
||||
|
||||
// write to the TypeEnum and Def_list (by replacing the ty with the new Type created above)
|
||||
let func_name_mangled = Self::name_mangling(class_name.clone(), func_name);
|
||||
let def_id = self.class_method_to_def_id.read()[&func_name_mangled];
|
||||
unimplemented!();
|
||||
|
||||
|
||||
if func_name == "__init__" {
|
||||
// special for constructor, need to look into the fields
|
||||
// TODO: look into the function body and see
|
||||
}
|
||||
} else {
|
||||
// do nothing. we do not care about things like this?
|
||||
// class A:
|
||||
// a = 3
|
||||
// b = [2, 3]
|
||||
// add to TopLevelDef
|
||||
class_def_type_vars.push(ty);
|
||||
}
|
||||
}
|
||||
},
|
||||
|
||||
// top level function definition
|
||||
Some(ast::Located{node: ast::StmtKind::FunctionDef {
|
||||
name,
|
||||
args,
|
||||
body,
|
||||
returns,
|
||||
// if others, do nothing in this function
|
||||
_ => continue
|
||||
}
|
||||
}
|
||||
|
||||
};
|
||||
Ok(())
|
||||
}
|
||||
|
||||
/// step 2, base classes. Need to separate step1 and step2 for this reason:
|
||||
/// `class B(Generic[T, V]);
|
||||
/// class A(B[int, bool])`
|
||||
/// if the type var associated with class `B` has not been handled properly,
|
||||
/// the parse of type annotation of `B[int, bool]` will fail
|
||||
fn analyze_top_level_class_bases(&mut self) -> Result<(), String> {
|
||||
let mut def_list = self.definition_list.write();
|
||||
let ast_list = self.ast_list.read();
|
||||
let mut unifier = self.unifier.write();
|
||||
|
||||
for (class_def, class_ast) in def_list
|
||||
.iter_mut()
|
||||
.zip(ast_list.iter())
|
||||
.collect::<Vec<(&mut RwLock<TopLevelDef>, &Option<ast::Stmt<()>>)>>() {
|
||||
let (
|
||||
class_bases,
|
||||
class_ancestors,
|
||||
class_resolver
|
||||
) = {
|
||||
if let TopLevelDef::Class {
|
||||
ancestors,
|
||||
resolver,
|
||||
..
|
||||
}, .. }) => {
|
||||
// TODO:
|
||||
unimplemented!()
|
||||
} = class_def.get_mut() {
|
||||
if let Some(ast::Located {node: ast::StmtKind::ClassDef {
|
||||
bases,
|
||||
..
|
||||
}, .. }) = class_ast {
|
||||
(bases, ancestors, resolver)
|
||||
} else { unreachable!("must be both class") }
|
||||
} else { continue }
|
||||
};
|
||||
for b in class_bases {
|
||||
// type vars have already been handled, so skip on `Generic[...]`
|
||||
if let ast::ExprKind::Subscript {value, ..} = &b.node {
|
||||
if let ast::ExprKind::Name {id, ..} = &value.node {
|
||||
if id == "Generic" { continue }
|
||||
}
|
||||
}
|
||||
// get the def id of the base class
|
||||
let base_ty = class_resolver.as_ref().unwrap().lock().parse_type_annotation(
|
||||
&self.to_top_level_context(),
|
||||
unifier.borrow_mut(),
|
||||
&self.primitives,
|
||||
b
|
||||
)?;
|
||||
let base_id =
|
||||
if let TypeEnum::TObj {obj_id, ..} = unifier.get_ty(base_ty).as_ref() {
|
||||
*obj_id
|
||||
} else { return Err("expect concrete class/type to be base class".into()) };
|
||||
|
||||
// write to the class ancestors
|
||||
class_ancestors.push(base_id);
|
||||
}
|
||||
|
||||
};
|
||||
Ok(())
|
||||
}
|
||||
|
||||
/// step 3, class_fields
|
||||
fn analyze_top_level_class_fields_methods(&mut self) -> Result<(), String> {
|
||||
let mut def_list = self.definition_list.write();
|
||||
let ast_list = self.ast_list.read();
|
||||
let mut unifier = self.unifier.write();
|
||||
let class_method_to_def_id = self.class_method_to_def_id.read();
|
||||
let mut to_be_analyzed_class = self.to_be_analyzed_class.write();
|
||||
|
||||
while !to_be_analyzed_class.is_empty() {
|
||||
let ind = to_be_analyzed_class.remove(0).0;
|
||||
|
||||
let (class_def, class_ast) = (
|
||||
&mut def_list[ind], &ast_list[ind]
|
||||
);
|
||||
let (
|
||||
class_name,
|
||||
class_fields,
|
||||
class_methods,
|
||||
class_resolver,
|
||||
class_body
|
||||
) = {
|
||||
if let TopLevelDef::Class {
|
||||
resolver,
|
||||
fields,
|
||||
methods,
|
||||
..
|
||||
} = class_def.get_mut() {
|
||||
if let Some(ast::Located {node: ast::StmtKind::ClassDef {
|
||||
name,
|
||||
body,
|
||||
..
|
||||
}, .. }) = class_ast {
|
||||
(name, fields, methods, resolver, body)
|
||||
} else { unreachable!("must be both class") }
|
||||
} else { continue }
|
||||
};
|
||||
for b in class_body {
|
||||
if let ast::StmtKind::FunctionDef {
|
||||
args: func_args,
|
||||
body: func_body,
|
||||
name: func_name,
|
||||
returns: func_returns,
|
||||
..
|
||||
} = &b.node {
|
||||
// unwrap should not fail
|
||||
let method_def_id =
|
||||
class_method_to_def_id
|
||||
.get(&Self::name_mangling(
|
||||
class_name.into(),
|
||||
func_name)
|
||||
).unwrap();
|
||||
|
||||
let a = &def_list[method_def_id.0];
|
||||
} else {
|
||||
// what should we do with `class A: a = 3`?
|
||||
continue
|
||||
}
|
||||
|
||||
// only expect class def and function def ast
|
||||
_ => return Err("only expect function and class definitions to be submitted here to be analyzed".into())
|
||||
}
|
||||
}
|
||||
Ok(())
|
||||
|
||||
}
|
||||
|
||||
fn analyze_top_level_inheritance(&mut self) -> Result<(), String> {
|
||||
unimplemented!()
|
||||
}
|
||||
|
||||
fn analyze_top_level_field_instantiation(&mut self) -> Result<(), String> {
|
||||
unimplemented!()
|
||||
}
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in New Issue