M-Labs/nac3
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register top level clean up

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ychenfo 2021-08-12 10:50:01 +08:00
parent 17ee8fe6d0
commit 824a5cb01a
1 changed files with 61 additions and 63 deletions
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122
nac3core/src/top_level.rs
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@ -119,8 +119,8 @@ impl TopLevelComposer {
(primitives, unifier)
}
// return a composer and things to make a "primitive" symbol resolver, so that the symbol
// resolver can later figure out primitive type definitions when passed a primitive type name
/// return a composer and things to make a "primitive" symbol resolver, so that the symbol
/// resolver can later figure out primitive type definitions when passed a primitive type name
pub fn new() -> (Vec<(String, DefinitionId, Type)>, Self) {
let primitives = Self::make_primitives();
// the def list including the entries of primitive info
@ -199,11 +199,11 @@ impl TopLevelComposer {
&mut self,
ast: ast::Stmt<()>,
resolver: Option<Arc<Mutex<dyn SymbolResolver + Send>>>,
) -> Result<Vec<(String, DefinitionId, Type)>, String> {
) -> Result<(String, DefinitionId, Type), String> {
match &ast.node {
ast::StmtKind::ClassDef { name, body, .. } => {
let class_name = name.to_string();
let def_list = self.definition_list.write();
let mut def_list = self.definition_list.write();
let class_def_id = def_list.len();
// add the class to the unifier
@ -213,18 +213,15 @@ impl TopLevelComposer {
params: Default::default(),
});
let mut ret_vector: Vec<(String, DefinitionId, Type)> =
vec![(class_name.clone(), DefinitionId(class_def_id), ty)];
// parse class def body and register class methods into the def list
// NOTE: module's symbol resolver would not know the name of the class methods,
// thus cannot return their definition_id? so we have to manage it ourselves?
// or do we return the class method list of (method_name, def_id, type) to
// application to be used to build symbol resolver? <- current implementation
// FIXME: better do not return and let symbol resolver to manage the mangled name
// module's symbol resolver would not know the name of the class methods,
// thus cannot return their definition_id? so we have to manage it ourselves
// by using the field `class_method_to_def_id`
for b in body {
if let ast::StmtKind::FunctionDef { name, .. } = &b.node {
let fun_name = name_mangling(class_name.clone(), name);
let def_id = self.definition_list.len();
let def_id = def_list.len();
// add to unifier
let ty = self.unifier.add_ty(TypeEnum::TFunc(
crate::typecheck::typedef::FunSignature {
@ -233,51 +230,61 @@ impl TopLevelComposer {
vars: Default::default(),
},
));
// add to the definition list
self.definition_list.push(TopLevelDefInfo {
def: Self::make_top_level_function_def(fun_name.clone(), ty, None), // FIXME:
def_list.push(TopLevelDefInfo {
def: Self::make_top_level_function_def(fun_name.clone(), ty, resolver.clone()),
ty,
ast: None, // since it is inside the class def body statments
// since it is inside the class def body statments, the ast is None
ast: None,
});
ret_vector.push((fun_name, DefinitionId(def_id), ty));
// class method, do not let the symbol manager manage it, use our own map
// FIXME: maybe not do name magling, use map to map instead
self.class_method_to_def_id.insert(
fun_name,
DefinitionId(def_id)
);
// if it is the contructor, special handling is needed. In the above
// handling, we still add __init__ function to the class method
if name == "__init__" {
self.definition_list.push(TopLevelDefInfo {
def_list.push(TopLevelDefInfo {
def: TopLevelDef::Initializer {
class_id: DefinitionId(class_def_id),
},
ty: self.primitives.none, // arbitary picked one
ast: None, // it is inside the class def body statments
// arbitary picked one for the constructor
ty: self.primitives.none,
// it is inside the class def body statments, so None
ast: None,
})
// FIXME: should we return this to the symbol resolver?, should be yes
}
}
}
// add the class to the definition list
self.definition_list.push(TopLevelDefInfo {
def_list.push(TopLevelDefInfo {
def: Self::make_top_level_class_def(class_def_id, resolver),
ast: Some(ast),
ty,
});
Ok(ret_vector)
}
Ok((class_name, DefinitionId(class_def_id), ty))
},
ast::StmtKind::FunctionDef { name, .. } => {
let fun_name = name.to_string();
let def_id = self.definition_list.len();
// add to the unifier
let ty =
self.unifier.add_ty(TypeEnum::TFunc(crate::typecheck::typedef::FunSignature {
args: Default::default(),
ret: self.primitives.none,
vars: Default::default(),
}));
let ty = self.unifier.add_ty(TypeEnum::TFunc(crate::typecheck::typedef::FunSignature {
args: Default::default(),
ret: self.primitives.none,
vars: Default::default(),
}));
// add to the definition list
self.definition_list.push(TopLevelDefInfo {
let mut def_list = self.definition_list.write();
def_list.push(TopLevelDefInfo {
def: Self::make_top_level_function_def(
name.into(),
self.primitives.none,
@ -287,7 +294,7 @@ impl TopLevelComposer {
ty,
});
Ok(vec![(fun_name, DefinitionId(def_id), ty)])
Ok((fun_name, DefinitionId(def_list.len() - 1), ty))
}
_ => Err("only registrations of top level classes/functions are supprted".into()),
@ -296,7 +303,8 @@ impl TopLevelComposer {
/// this should be called after all top level classes are registered, and will actually fill in those fields of the previous dummy one
pub fn analyze_top_level(&mut self) -> Result<(), String> {
for mut d in &mut self.definition_list {
for d in self.definition_list.write().iter_mut() {
// only analyze those with ast, and class_method(ast in class def)
if let Some(ast) = &d.ast {
match &ast.node {
ast::StmtKind::ClassDef {
@ -310,23 +318,25 @@ impl TopLevelComposer {
fields,
methods,
type_vars,
// resolver,
resolver,
) = if let TopLevelDef::Class {
object_id,
ancestors,
fields,
methods,
type_vars,
resolver
resolver: Some(resolver)
} = &mut d.def {
(object_id, ancestors, fields, methods, type_vars) // FIXME: this unwrap is not safe
(object_id, ancestors, fields, methods, type_vars, resolver.lock())
} else { unreachable!() };
// try to get mutable reference of the entry in the unification table, get the `TypeEnum`
let (params,
fields
) = if let TypeEnum::TObj {
params, // FIXME: this params is immutable, even if this is mutable, what should the key be, get the original typevar's var_id?
// FIXME: this params is immutable, even if this is mutable, what
// should the key be, get the original typevar's var_id?
params,
fields,
..
} = self.unifier.get_ty(d.ty).borrow() {
@ -337,7 +347,9 @@ impl TopLevelComposer {
// into the `bases` ast node
for b in bases {
match &b.node {
// typevars bounded to the class, things like `class A(Generic[T, V, ImportedModule.T])`
// typevars bounded to the class, only support things like `class A(Generic[T, V])`,
// things like `class A(Generic[T, V, ImportedModule.T])` is not supported
// i.e. only simple names are allowed in the subscript
// should update the TopLevelDef::Class.typevars and the TypeEnum::TObj.params
ast::ExprKind::Subscript {value, slice, ..} if {
if let ast::ExprKind::Name {id, ..} = &value.node {
@ -345,22 +357,10 @@ impl TopLevelComposer {
} else { false }
} => {
match &slice.node {
// `class Foo(Generic[T, V, P, ImportedModule.T]):`
// `class Foo(Generic[T, V, P]):`
ast::ExprKind::Tuple {elts, ..} => {
for e in elts {
// TODO: I'd better parse the node to get the Type of the type vars(can have things like: A.B.C.typevar?)
match &e.node {
ast::ExprKind::Name {id, ..} => {
// the def_list
// type_vars.push(resolver.get_symbol_type(id).ok_or_else(|| "unknown type variable".to_string())?); FIXME:
// the TypeEnum of the class
// FIXME: the `params` destructed above is not mutable, even if this is mutable, what should the key be?
unimplemented!()
},
_ => unimplemented!()
}
// resolver.parse_type_annotation(self.definition_list.) // FIXME:
}
},
@ -374,17 +374,11 @@ impl TopLevelComposer {
unimplemented!()
},
// `class Foo(Generic[ImportedModule.T])`
ast::ExprKind::Attribute {value, attr, ..} => {
// TODO:
unimplemented!()
},
_ => return Err("not supported".into()) // NOTE: it is really all the supported cases?
_ => return Err("not supported, only simple names are allowed in the subscript".into())
};
},
// base class, name directly available inside the
/* // base class, name directly available inside the
// module, can use this module's symbol resolver
ast::ExprKind::Name {id, ..} => {
// let def_id = resolver.get_identifier_def(id); FIXME:
@ -407,7 +401,9 @@ impl TopLevelComposer {
// `class Foo(ImportedModule.A[int, bool])`, A is a class with associated type variables
ast::ExprKind::Subscript {value, slice, ..} => {
unimplemented!()
},
}, */
// base class is possible in other cases, we parse for thr base class
_ => return Err("not supported".into())
}
}
@ -444,7 +440,9 @@ impl TopLevelComposer {
unimplemented!()
}
_ => return Err("only expect function and class definitions to be submitted here to be analyzed".into())
node => {
return Err("only expect function and class definitions to be submitted here to be analyzed".into())
}
}
}
}