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change the parse type annotation parameter type, refactoring top level

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This commit is contained in:
ychenfo 2021-08-19 17:31:23 +08:00
parent f5b8b58826
commit 40b062ce0f
6 changed files with 160 additions and 186 deletions
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5
nac3core/src/codegen/expr.rs
View File

@ -56,7 +56,7 @@ impl<'ctx, 'a> CodeGenContext<'ctx, 'a> {
// we cannot have other types, virtual type should be handled by function calls
_ => unreachable!(),
};
let def = &self.top_level.definitions.read()[obj_id.0];
let def = &self.top_level.definitions[obj_id.0];
let index = if let TopLevelDef::Class { fields, .. } = &*def.read() {
fields.iter().find_position(|x| x.0 == attr).unwrap().0
} else {
@ -104,8 +104,7 @@ impl<'ctx, 'a> CodeGenContext<'ctx, 'a> {
ret: Type,
) -> Option<BasicValueEnum<'ctx>> {
let key = self.get_subst_key(obj.map(|(a, _)| a), fun.0);
let defs = self.top_level.definitions.read();
let definition = defs.get(fun.1 .0).unwrap();
let definition = self.top_level.definitions.get(fun.1 .0).unwrap();
let val = if let TopLevelDef::Function { instance_to_symbol, .. } = &*definition.read() {
let symbol = instance_to_symbol.get(&key).unwrap_or_else(|| {
// TODO: codegen for function that are not yet generated

3
nac3core/src/codegen/mod.rs
View File

@ -206,8 +206,7 @@ fn get_llvm_type<'ctx>(
match &*unifier.get_ty(ty) {
TObj { obj_id, fields, .. } => {
// a struct with fields in the order of declaration
let defs = top_level.definitions.read();
let definition = defs.get(obj_id.0).unwrap();
let definition = top_level.definitions.get(obj_id.0).unwrap();
let ty = if let TopLevelDef::Class { fields: fields_list, .. } = &*definition.read()
{
let fields = fields.borrow();

23
nac3core/src/symbol_resolver.rs
View File

@ -1,13 +1,14 @@
use std::cell::RefCell;
use std::{cell::RefCell, sync::Arc};
use std::collections::HashMap;
use crate::top_level::{DefinitionId, TopLevelContext, TopLevelDef};
use crate::top_level::{DefinitionId, TopLevelDef};
use crate::typecheck::{
type_inferencer::PrimitiveStore,
typedef::{Type, Unifier},
};
use crate::{location::Location, typecheck::typedef::TypeEnum};
use itertools::{chain, izip};
use parking_lot::RwLock;
use rustpython_parser::ast::Expr;
#[derive(Clone, PartialEq)]
@ -39,7 +40,7 @@ pub trait SymbolResolver {
// convert type annotation into type
pub fn parse_type_annotation<T>(
resolver: &dyn SymbolResolver,
top_level: &TopLevelContext,
top_level_defs: &[Arc<RwLock<TopLevelDef>>],
unifier: &mut Unifier,
primitives: &PrimitiveStore,
expr: &Expr<T>,
@ -55,8 +56,7 @@ pub fn parse_type_annotation<T>(
x => {
let obj_id = resolver.get_identifier_def(x);
if let Some(obj_id) = obj_id {
let defs = top_level.definitions.read();
let def = defs[obj_id.0].read();
let def = top_level_defs[obj_id.0].read();
if let TopLevelDef::Class { fields, methods, type_vars, .. } = &*def {
if !type_vars.is_empty() {
return Err(format!(
@ -96,26 +96,25 @@ pub fn parse_type_annotation<T>(
if let Name { id, .. } = &value.node {
if id == "virtual" {
let ty =
parse_type_annotation(resolver, top_level, unifier, primitives, slice)?;
parse_type_annotation(resolver, top_level_defs, unifier, primitives, slice)?;
Ok(unifier.add_ty(TypeEnum::TVirtual { ty }))
} else {
let types = if let Tuple { elts, .. } = &slice.node {
elts.iter()
.map(|v| {
parse_type_annotation(resolver, top_level, unifier, primitives, v)
parse_type_annotation(resolver, top_level_defs, unifier, primitives, v)
})
.collect::<Result<Vec<_>, _>>()?
} else {
vec![parse_type_annotation(
resolver, top_level, unifier, primitives, slice,
resolver, top_level_defs, unifier, primitives, slice,
)?]
};
let obj_id = resolver
.get_identifier_def(id)
.ok_or_else(|| format!("Unknown type annotation {}", id))?;
let defs = top_level.definitions.read();
let def = defs[obj_id.0].read();
let def = top_level_defs[obj_id.0].read();
if let TopLevelDef::Class { fields, methods, type_vars, .. } = &*def {
if types.len() != type_vars.len() {
return Err(format!(
@ -164,11 +163,11 @@ pub fn parse_type_annotation<T>(
impl dyn SymbolResolver + Send + Sync {
pub fn parse_type_annotation<T>(
&self,
top_level: &TopLevelContext,
top_level_defs: &[Arc<RwLock<TopLevelDef>>],
unifier: &mut Unifier,
primitives: &PrimitiveStore,
expr: &Expr<T>,
) -> Result<Type, String> {
parse_type_annotation(self, top_level, unifier, primitives, expr)
parse_type_annotation(self, top_level_defs, unifier, primitives, expr)
}
}

309
nac3core/src/top_level.rs
View File

@ -4,9 +4,9 @@ use std::{collections::HashMap, collections::HashSet, sync::Arc};
use super::typecheck::type_inferencer::PrimitiveStore;
use super::typecheck::typedef::{SharedUnifier, Type, TypeEnum, Unifier};
use crate::typecheck::typedef::{FunSignature, FuncArg};
use crate::typecheck::{typedef::{FunSignature, FuncArg}};
use crate::{symbol_resolver::SymbolResolver, typecheck::typedef::Mapping};
use itertools::Itertools;
use itertools::{Itertools, izip};
use parking_lot::{Mutex, RwLock};
use rustpython_parser::ast::{self, Stmt};
@ -55,50 +55,44 @@ pub enum TopLevelDef {
},
}
impl TopLevelDef {
fn get_function_type(&self) -> Result<Type, String> {
if let Self::Function { signature, .. } = self {
Ok(*signature)
} else {
Err("only expect function def here".into())
}
}
pub struct TopLevelContext {
pub definitions: Arc<Vec<Arc<RwLock<TopLevelDef>>>>,
pub unifiers: Arc<RwLock<Vec<(SharedUnifier, PrimitiveStore)>>>,
}
pub struct TopLevelContext {
pub definitions: Arc<RwLock<Vec<Arc<RwLock<TopLevelDef>>>>>,
pub unifiers: Arc<RwLock<Vec<(SharedUnifier, PrimitiveStore)>>>,
impl TopLevelContext {
pub fn read_top_level_def_list(&self) -> &[Arc<RwLock<TopLevelDef>>] {
self.definitions.as_slice()
}
}
pub struct TopLevelComposer {
// list of top level definitions, same as top level context
pub definition_ast_list: Arc<RwLock<Vec<(Arc<RwLock<TopLevelDef>>, Option<ast::Stmt<()>>)>>>,
pub definition_ast_list: Vec<(Arc<RwLock<TopLevelDef>>, Option<ast::Stmt<()>>)>,
// start as a primitive unifier, will add more top_level defs inside
pub unifier: Unifier,
// primitive store
pub primitives: PrimitiveStore,
// mangled class method name to def_id
pub class_method_to_def_id: HashMap<String, DefinitionId>,
// pub class_method_to_def_id: HashMap<String, DefinitionId>,
// record the def id of the classes whoses fields and methods are to be analyzed
pub to_be_analyzed_class: Vec<DefinitionId>,
// pub to_be_analyzed_class: Vec<DefinitionId>,
}
impl TopLevelComposer {
pub fn to_top_level_context(&self) -> TopLevelContext {
let def_list =
self.definition_ast_list.read().iter().map(|(x, _)| x.clone()).collect::<Vec<_>>();
pub fn to_top_level_context(self) -> TopLevelContext {
TopLevelContext {
definitions: RwLock::new(def_list).into(),
definitions: self
.definition_ast_list
.into_iter()
.map(|(x, ..)| x)
.collect::<Vec<_>>()
.into(),
// FIXME: all the big unifier or?
unifiers: Default::default(),
}
}
fn name_mangling(mut class_name: String, method_name: &str) -> String {
class_name.push_str(method_name);
class_name
}
pub fn make_primitives() -> (PrimitiveStore, Unifier) {
let mut unifier = Unifier::new();
let int32 = unifier.add_ty(TypeEnum::TObj {
@ -147,14 +141,11 @@ impl TopLevelComposer {
let ast_list: Vec<Option<ast::Stmt<()>>> = vec![None, None, None, None, None];
let composer = TopLevelComposer {
definition_ast_list: RwLock::new(
top_level_def_list.into_iter().zip(ast_list).collect_vec(),
)
.into(),
definition_ast_list: izip!(top_level_def_list, ast_list).collect_vec(),
primitives: primitives.0,
unifier: primitives.1,
class_method_to_def_id: Default::default(),
to_be_analyzed_class: Default::default(),
// class_method_to_def_id: Default::default(),
// to_be_analyzed_class: Default::default(),
};
(
vec![
@ -201,19 +192,35 @@ impl TopLevelComposer {
}
}
// fn get_class_method_def_id(class_name: &str, method_name: &str, resolver: &dyn SymbolResolver) -> Result<DefinitionId, String> {
// let class_def = resolver.get_identifier_def(class_name).ok_or_else(|| "no such class".to_string())?;
// }
fn name_mangling(class_name: String, method_name: &str) -> String {
class_name.push_str(method_name);
class_name
}
fn extract_def_list(&self) -> Vec<Arc<RwLock<TopLevelDef>>> {
self
.definition_ast_list
.iter()
.map(|(def, ..)| def.clone())
.collect_vec()
}
/// step 0, register, just remeber the names of top level classes/function
pub fn register_top_level(
&mut self,
ast: ast::Stmt<()>,
resolver: Option<Arc<Mutex<dyn SymbolResolver + Send + Sync>>>,
) -> Result<(String, DefinitionId), String> {
let mut def_list = self.definition_ast_list.write();
match &ast.node {
ast::StmtKind::ClassDef { name, body, .. } => {
let class_name = name.to_string();
let class_def_id = def_list.len();
let class_def_id = self.definition_ast_list.len();
// add the class to the definition lists
// since later when registering class method, ast will still be used,
// here push None temporarly, later will move the ast inside
let mut class_def_ast = (
@ -232,49 +239,60 @@ impl TopLevelComposer {
String,
Arc<RwLock<TopLevelDef>>,
DefinitionId,
Type
)> = Vec::new();
let mut class_method_index_offset = 0;
for b in body {
if let ast::StmtKind::FunctionDef { name: method_name, .. } = &b.node {
let method_name = Self::name_mangling(class_name.clone(), method_name);
let method_def_id = def_list.len() + {
let method_def_id = self.definition_ast_list.len() + {
class_method_index_offset += 1;
class_method_index_offset
};
// dummy method define here
// the ast of class method is in the class, push None in to the list here
let dummy_method_type = self.unifier.get_fresh_var();
class_method_name_def_ids.push((
method_name.clone(),
RwLock::new(Self::make_top_level_function_def(
method_name.clone(),
self.primitives.none,
Self::name_mangling(class_name, method_name),
// later unify with parsed type
dummy_method_type.0,
resolver.clone(),
))
.into(),
DefinitionId(method_def_id),
dummy_method_type.0
));
} else {
// do nothing
continue
}
}
// move the ast to the entry of the class in the ast_list
class_def_ast.1 = Some(ast);
// get the methods into the class_def
for (name, _, id, ty) in class_method_name_def_ids {
if let TopLevelDef::Class { methods, .. } = class_def_ast.0.get_mut() {
methods.push((name, ty, id))
} else { unreachable!() }
}
// now class_def_ast and class_method_def_ast_ids are ok, put them into actual def list in correct order
def_list.push(class_def_ast);
for (name, def, id) in class_method_name_def_ids {
def_list.push((def, None));
self.class_method_to_def_id.insert(name, id);
self.definition_ast_list.push(class_def_ast);
for (_, def, ..) in class_method_name_def_ids {
self.definition_ast_list.push((def, None));
}
// put the constructor into the def_list
def_list.push((
self.definition_ast_list.push((
RwLock::new(TopLevelDef::Initializer { class_id: DefinitionId(class_def_id) })
.into(),
None,
));
// class, put its def_id into the to be analyzed set
self.to_be_analyzed_class.push(DefinitionId(class_def_id));
// self.to_be_analyzed_class.push(DefinitionId(class_def_id));
Ok((class_name, DefinitionId(class_def_id)))
}
@ -283,10 +301,11 @@ impl TopLevelComposer {
let fun_name = name.to_string();
// add to the definition list
def_list.push((
self.definition_ast_list.push((
RwLock::new(Self::make_top_level_function_def(
name.into(),
self.primitives.none,
// unify with correct type later
self.unifier.get_fresh_var().0,
resolver,
))
.into(),
@ -294,7 +313,7 @@ impl TopLevelComposer {
));
// return
Ok((fun_name, DefinitionId(def_list.len() - 1)))
Ok((fun_name, DefinitionId(self.definition_ast_list.len() - 1)))
}
_ => Err("only registrations of top level classes/functions are supprted".into()),
@ -303,12 +322,7 @@ impl TopLevelComposer {
/// step 1, analyze the type vars associated with top level class
fn analyze_top_level_class_type_var(&mut self) -> Result<(), String> {
let mut def_list = self.definition_ast_list.write();
let converted_top_level = &self.to_top_level_context();
let primitives = &self.primitives;
let unifier = &mut self.unifier;
for (class_def, class_ast) in def_list.iter_mut() {
for (class_def, class_ast) in self.definition_ast_list {
// only deal with class def here
let mut class_def = class_def.write();
let (class_bases_ast, class_def_type_vars, class_resolver) = {
@ -326,7 +340,7 @@ impl TopLevelComposer {
}
};
let class_resolver = class_resolver.as_ref().unwrap().lock();
let class_resolver = class_resolver.deref();
let mut is_generic = false;
for b in class_bases_ast {
match &b.node {
@ -335,65 +349,56 @@ impl TopLevelComposer {
// 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 matches!(&value.node, ast::ExprKind::Name { id, .. } if id == "Generic") =>
{
ast::ExprKind::Subscript { value, slice, .. }
if {
matches!(&value.node, ast::ExprKind::Name { id, .. } if id == "Generic")
} => {
if !is_generic {
is_generic = true;
} else {
return Err("Only single Generic[...] can be in bases".into());
}
let type_var_list: Vec<&ast::Expr<()>> = vec![];
// if `class A(Generic[T, V, G])`
if let ast::ExprKind::Tuple { elts, .. } = &slice.node {
// parse the type vars
let type_vars = elts
.iter()
.map(|e| {
class_resolver.parse_type_annotation(
converted_top_level,
unifier.borrow_mut(),
primitives,
e,
)
})
.collect::<Result<Vec<_>, _>>()?;
// check if all are unique type vars
let mut occured_type_var_id: HashSet<u32> = HashSet::new();
let all_unique_type_var = type_vars.iter().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);
type_var_list.extend(elts.iter());
// `class A(Generic[T])`
} else {
let ty = class_resolver.parse_type_annotation(
converted_top_level,
unifier.borrow_mut(),
primitives,
&slice,
)?;
// 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());
}
// add to TopLevelDef
class_def_type_vars.push(ty);
type_var_list.push(slice.deref());
}
// parse the type vars
let type_vars = type_var_list
.into_iter()
.map(|e| {
let temp_def_list = self.extract_def_list();
class_resolver.parse_type_annotation(
&temp_def_list,
self.unifier.borrow_mut(),
&self.primitives,
e
)
})
.collect::<Result<Vec<_>, _>>()?;
// check if all are unique type vars
let mut occured_type_var_id: HashSet<u32> = HashSet::new();
let all_unique_type_var = type_vars.iter().all(|x| {
let ty = self.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);
}
// if others, do nothing in this function
@ -410,12 +415,7 @@ impl TopLevelComposer {
/// 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_ast_list.write();
let converted_top_level = &self.to_top_level_context();
let primitives = &self.primitives;
let unifier = &mut self.unifier;
for (class_def, class_ast) in def_list.iter_mut() {
for (class_def, class_ast) in self.definition_ast_list.iter_mut() {
let mut class_def = class_def.write();
let (class_bases, class_ancestors, class_resolver) = {
if let TopLevelDef::Class { ancestors, resolver, .. } = class_def.deref_mut() {
@ -432,52 +432,51 @@ impl TopLevelComposer {
}
};
let class_resolver = class_resolver.as_ref().unwrap().lock();
let class_resolver = class_resolver.deref();
let mut has_base = false;
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;
}
}
if matches!(
&b.node,
ast::ExprKind::Subscript { value, .. }
if matches!(
&value.node,
ast::ExprKind::Name { id, .. } if id == "Generic"
)
) { continue }
has_base = true;
if has_base {
return Err("a class def can only have at most one base class \
declaration and one generic declaration".into())
}
// get the def id of the base class
let temp_def_list = self.extract_def_list();
let base_ty = class_resolver.parse_type_annotation(
converted_top_level,
unifier.borrow_mut(),
primitives,
b,
&temp_def_list,
self.unifier.borrow_mut(),
&self.primitives,
b
)?;
let base_id =
if let TypeEnum::TObj { obj_id, .. } = unifier.get_ty(base_ty).as_ref() {
if let TypeEnum::TObj { obj_id, .. } = self.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, make sure the uniqueness
if !class_ancestors.contains(&base_id) {
class_ancestors.push(base_id);
} else {
return Err("cannot specify the same base class twice".into());
}
// TODO: when base class is generic, record the generic type parameter
// TODO: check to prevent cyclic base class
class_ancestors.push(base_id);
}
}
Ok(())
}
/// step 3, class fields and methods
// FIXME: analyze base classes here
// FIXME: deal with self type
// NOTE: prevent cycles only roughly done
fn analyze_top_level_class_fields_methods(&mut self) -> Result<(), String> {
let mut def_ast_list = self.definition_ast_list.write();
let converted_top_level = &self.to_top_level_context();
let primitives = &self.primitives;
let to_be_analyzed_class = &mut self.to_be_analyzed_class;
let unifier = &mut self.unifier;
// NOTE: roughly prevent infinite loop
let mut max_iter = to_be_analyzed_class.len() * 4;
'class: loop {
if to_be_analyzed_class.is_empty() && {
@ -506,6 +505,8 @@ impl TopLevelComposer {
unreachable!("should be class def ast")
}
};
let class_resolver = class_resolver.as_ref().lock();
let class_resolver = class_resolver.deref();
let all_base_class_analyzed = {
let not_yet_analyzed =
@ -524,16 +525,7 @@ impl TopLevelComposer {
let class_bases_ty = class_bases_ast
.iter()
.filter_map(|x| {
class_resolver
.as_ref()
.lock()
.parse_type_annotation(
converted_top_level,
unifier.borrow_mut(),
primitives,
x,
)
.ok()
self.parse_type_annotation(class_resolver, x).ok()
})
.collect_vec();
@ -564,12 +556,7 @@ impl TopLevelComposer {
})?
.as_ref();
let ty = class_resolver.as_ref().lock().parse_type_annotation(
converted_top_level,
unifier.borrow_mut(),
primitives,
annotation,
)?;
let ty = self.parse_type_annotation(class_resolver, annotation)?;
if !Self::check_ty_analyzed(ty, unifier, to_be_analyzed_class) {
to_be_analyzed_class.push(DefinitionId(class_ind));
continue 'class;
@ -600,12 +587,7 @@ impl TopLevelComposer {
let ty = method_returns_ast
.as_ref()
.map(|x| {
class_resolver.as_ref().lock().parse_type_annotation(
converted_top_level,
unifier.borrow_mut(),
primitives,
x.as_ref(),
)
self.parse_type_annotation(class_resolver, x)
})
.ok_or_else(|| "return type annotation error".to_string())??;
if !Self::check_ty_analyzed(ty, unifier, to_be_analyzed_class) {
@ -640,12 +622,7 @@ impl TopLevelComposer {
} =>
{
let field_ty =
class_resolver.as_ref().lock().parse_type_annotation(
converted_top_level,
unifier.borrow_mut(),
primitives,
annotation.as_ref(),
)?;
self.parse_type_annotation(class_resolver, annotation)?;
if !Self::check_ty_analyzed(
field_ty,
unifier,

4
nac3core/src/typecheck/type_inferencer/mod.rs
View File

@ -83,7 +83,7 @@ impl<'a> fold::Fold<()> for Inferencer<'a> {
None
};
let annotation_type = self.function_data.resolver.parse_type_annotation(
self.top_level,
self.top_level.read_top_level_def_list(),
self.unifier,
&self.primitives,
annotation.as_ref(),
@ -345,7 +345,7 @@ impl<'a> Inferencer<'a> {
let arg0 = self.fold_expr(args.remove(0))?;
let ty = if let Some(arg) = args.pop() {
self.function_data.resolver.parse_type_annotation(
self.top_level,
self.top_level.read_top_level_def_list(),
self.unifier,
self.primitives,
&arg,

2
nac3core/src/typecheck/type_inferencer/test.rs
View File

@ -269,7 +269,7 @@ impl TestEnvironment {
.collect();
let top_level = TopLevelContext {
definitions: Arc::new(RwLock::new(top_level_defs)),
definitions: Arc::new(top_level_defs),
unifiers: Default::default(),
};