pca006132
/
nac3
forked from M-Labs/nac3
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

change the parse type annotation parameter type, refactoring top level

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
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

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 // we cannot have other types, virtual type should be handled by function calls
_ => unreachable!(), _ => 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() { let index = if let TopLevelDef::Class { fields, .. } = &*def.read() {
fields.iter().find_position(|x| x.0 == attr).unwrap().0 fields.iter().find_position(|x| x.0 == attr).unwrap().0
} else { } else {
@ -104,8 +104,7 @@ impl<'ctx, 'a> CodeGenContext<'ctx, 'a> {
ret: Type, ret: Type,
) -> Option<BasicValueEnum<'ctx>> { ) -> Option<BasicValueEnum<'ctx>> {
let key = self.get_subst_key(obj.map(|(a, _)| a), fun.0); let key = self.get_subst_key(obj.map(|(a, _)| a), fun.0);
let defs = self.top_level.definitions.read(); let definition = self.top_level.definitions.get(fun.1 .0).unwrap();
let definition = defs.get(fun.1 .0).unwrap();
let val = if let TopLevelDef::Function { instance_to_symbol, .. } = &*definition.read() { let val = if let TopLevelDef::Function { instance_to_symbol, .. } = &*definition.read() {
let symbol = instance_to_symbol.get(&key).unwrap_or_else(|| { let symbol = instance_to_symbol.get(&key).unwrap_or_else(|| {
// TODO: codegen for function that are not yet generated // 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) { match &*unifier.get_ty(ty) {
TObj { obj_id, fields, .. } => { TObj { obj_id, fields, .. } => {
// a struct with fields in the order of declaration // a struct with fields in the order of declaration
let defs = top_level.definitions.read(); let definition = top_level.definitions.get(obj_id.0).unwrap();
let definition = defs.get(obj_id.0).unwrap();
let ty = if let TopLevelDef::Class { fields: fields_list, .. } = &*definition.read() let ty = if let TopLevelDef::Class { fields: fields_list, .. } = &*definition.read()
{ {
let fields = fields.borrow(); 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 std::collections::HashMap;
use crate::top_level::{DefinitionId, TopLevelContext, TopLevelDef}; use crate::top_level::{DefinitionId, TopLevelDef};
use crate::typecheck::{ use crate::typecheck::{
type_inferencer::PrimitiveStore, type_inferencer::PrimitiveStore,
typedef::{Type, Unifier}, typedef::{Type, Unifier},
}; };
use crate::{location::Location, typecheck::typedef::TypeEnum}; use crate::{location::Location, typecheck::typedef::TypeEnum};
use itertools::{chain, izip}; use itertools::{chain, izip};
use parking_lot::RwLock;
use rustpython_parser::ast::Expr; use rustpython_parser::ast::Expr;
#[derive(Clone, PartialEq)] #[derive(Clone, PartialEq)]
@ -39,7 +40,7 @@ pub trait SymbolResolver {
// convert type annotation into type // convert type annotation into type
pub fn parse_type_annotation<T>( pub fn parse_type_annotation<T>(
resolver: &dyn SymbolResolver, resolver: &dyn SymbolResolver,
top_level: &TopLevelContext, top_level_defs: &[Arc<RwLock<TopLevelDef>>],
unifier: &mut Unifier, unifier: &mut Unifier,
primitives: &PrimitiveStore, primitives: &PrimitiveStore,
expr: &Expr<T>, expr: &Expr<T>,
@ -55,8 +56,7 @@ pub fn parse_type_annotation<T>(
x => { x => {
let obj_id = resolver.get_identifier_def(x); let obj_id = resolver.get_identifier_def(x);
if let Some(obj_id) = obj_id { if let Some(obj_id) = obj_id {
let defs = top_level.definitions.read(); let def = top_level_defs[obj_id.0].read();
let def = defs[obj_id.0].read();
if let TopLevelDef::Class { fields, methods, type_vars, .. } = &*def { if let TopLevelDef::Class { fields, methods, type_vars, .. } = &*def {
if !type_vars.is_empty() { if !type_vars.is_empty() {
return Err(format!( return Err(format!(
@ -96,26 +96,25 @@ pub fn parse_type_annotation<T>(
if let Name { id, .. } = &value.node { if let Name { id, .. } = &value.node {
if id == "virtual" { if id == "virtual" {
let ty = 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 })) Ok(unifier.add_ty(TypeEnum::TVirtual { ty }))
} else { } else {
let types = if let Tuple { elts, .. } = &slice.node { let types = if let Tuple { elts, .. } = &slice.node {
elts.iter() elts.iter()
.map(|v| { .map(|v| {
parse_type_annotation(resolver, top_level, unifier, primitives, v) parse_type_annotation(resolver, top_level_defs, unifier, primitives, v)
}) })
.collect::<Result<Vec<_>, _>>()? .collect::<Result<Vec<_>, _>>()?
} else { } else {
vec![parse_type_annotation( vec![parse_type_annotation(
resolver, top_level, unifier, primitives, slice, resolver, top_level_defs, unifier, primitives, slice,
)?] )?]
}; };
let obj_id = resolver let obj_id = resolver
.get_identifier_def(id) .get_identifier_def(id)
.ok_or_else(|| format!("Unknown type annotation {}", id))?; .ok_or_else(|| format!("Unknown type annotation {}", id))?;
let defs = top_level.definitions.read(); let def = top_level_defs[obj_id.0].read();
let def = defs[obj_id.0].read();
if let TopLevelDef::Class { fields, methods, type_vars, .. } = &*def { if let TopLevelDef::Class { fields, methods, type_vars, .. } = &*def {
if types.len() != type_vars.len() { if types.len() != type_vars.len() {
return Err(format!( return Err(format!(
@ -164,11 +163,11 @@ pub fn parse_type_annotation<T>(
impl dyn SymbolResolver + Send + Sync { impl dyn SymbolResolver + Send + Sync {
pub fn parse_type_annotation<T>( pub fn parse_type_annotation<T>(
&self, &self,
top_level: &TopLevelContext, top_level_defs: &[Arc<RwLock<TopLevelDef>>],
unifier: &mut Unifier, unifier: &mut Unifier,
primitives: &PrimitiveStore, primitives: &PrimitiveStore,
expr: &Expr<T>, expr: &Expr<T>,
) -> Result<Type, String> { ) -> 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::type_inferencer::PrimitiveStore;
use super::typecheck::typedef::{SharedUnifier, Type, TypeEnum, Unifier}; 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 crate::{symbol_resolver::SymbolResolver, typecheck::typedef::Mapping};
use itertools::Itertools; use itertools::{Itertools, izip};
use parking_lot::{Mutex, RwLock}; use parking_lot::{Mutex, RwLock};
use rustpython_parser::ast::{self, Stmt}; use rustpython_parser::ast::{self, Stmt};
@ -55,50 +55,44 @@ pub enum TopLevelDef {
}, },
} }
impl TopLevelDef { pub struct TopLevelContext {
fn get_function_type(&self) -> Result<Type, String> { pub definitions: Arc<Vec<Arc<RwLock<TopLevelDef>>>>,
if let Self::Function { signature, .. } = self { pub unifiers: Arc<RwLock<Vec<(SharedUnifier, PrimitiveStore)>>>,
Ok(*signature)
} else {
Err("only expect function def here".into())
}
}
} }
pub struct TopLevelContext { impl TopLevelContext {
pub definitions: Arc<RwLock<Vec<Arc<RwLock<TopLevelDef>>>>>, pub fn read_top_level_def_list(&self) -> &[Arc<RwLock<TopLevelDef>>] {
pub unifiers: Arc<RwLock<Vec<(SharedUnifier, PrimitiveStore)>>>, self.definitions.as_slice()
}
} }
pub struct TopLevelComposer { pub struct TopLevelComposer {
// list of top level definitions, same as top level context // 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 // start as a primitive unifier, will add more top_level defs inside
pub unifier: Unifier, pub unifier: Unifier,
// primitive store // primitive store
pub primitives: PrimitiveStore, pub primitives: PrimitiveStore,
// mangled class method name to def_id // 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 // 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 { impl TopLevelComposer {
pub fn to_top_level_context(&self) -> TopLevelContext { pub fn to_top_level_context(self) -> TopLevelContext {
let def_list =
self.definition_ast_list.read().iter().map(|(x, _)| x.clone()).collect::<Vec<_>>();
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? // FIXME: all the big unifier or?
unifiers: Default::default(), 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) { pub fn make_primitives() -> (PrimitiveStore, Unifier) {
let mut unifier = Unifier::new(); let mut unifier = Unifier::new();
let int32 = unifier.add_ty(TypeEnum::TObj { 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 ast_list: Vec<Option<ast::Stmt<()>>> = vec![None, None, None, None, None];
let composer = TopLevelComposer { let composer = TopLevelComposer {
definition_ast_list: RwLock::new( definition_ast_list: izip!(top_level_def_list, ast_list).collect_vec(),
top_level_def_list.into_iter().zip(ast_list).collect_vec(),
)
.into(),
primitives: primitives.0, primitives: primitives.0,
unifier: primitives.1, unifier: primitives.1,
class_method_to_def_id: Default::default(), // class_method_to_def_id: Default::default(),
to_be_analyzed_class: Default::default(), // to_be_analyzed_class: Default::default(),
}; };
( (
vec![ 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 /// step 0, register, just remeber the names of top level classes/function
pub fn register_top_level( pub fn register_top_level(
&mut self, &mut self,
ast: ast::Stmt<()>, ast: ast::Stmt<()>,
resolver: Option<Arc<Mutex<dyn SymbolResolver + Send + Sync>>>, resolver: Option<Arc<Mutex<dyn SymbolResolver + Send + Sync>>>,
) -> Result<(String, DefinitionId), String> { ) -> Result<(String, DefinitionId), String> {
let mut def_list = self.definition_ast_list.write();
match &ast.node { match &ast.node {
ast::StmtKind::ClassDef { name, body, .. } => { ast::StmtKind::ClassDef { name, body, .. } => {
let class_name = name.to_string(); 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, // since later when registering class method, ast will still be used,
// here push None temporarly, later will move the ast inside // here push None temporarly, later will move the ast inside
let mut class_def_ast = ( let mut class_def_ast = (
@ -232,49 +239,60 @@ impl TopLevelComposer {
String, String,
Arc<RwLock<TopLevelDef>>, Arc<RwLock<TopLevelDef>>,
DefinitionId, DefinitionId,
Type
)> = Vec::new(); )> = Vec::new();
let mut class_method_index_offset = 0; let mut class_method_index_offset = 0;
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 {
let method_name = Self::name_mangling(class_name.clone(), method_name); let method_def_id = self.definition_ast_list.len() + {
let method_def_id = def_list.len() + {
class_method_index_offset += 1; class_method_index_offset += 1;
class_method_index_offset class_method_index_offset
}; };
// dummy method define here // 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(( class_method_name_def_ids.push((
method_name.clone(), method_name.clone(),
RwLock::new(Self::make_top_level_function_def( RwLock::new(Self::make_top_level_function_def(
method_name.clone(), Self::name_mangling(class_name, method_name),
self.primitives.none, // later unify with parsed type
dummy_method_type.0,
resolver.clone(), resolver.clone(),
)) ))
.into(), .into(),
DefinitionId(method_def_id), 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 // move the ast to the entry of the class in the ast_list
class_def_ast.1 = Some(ast); 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 // 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); self.definition_ast_list.push(class_def_ast);
for (name, def, id) in class_method_name_def_ids { for (_, def, ..) in class_method_name_def_ids {
def_list.push((def, None)); self.definition_ast_list.push((def, None));
self.class_method_to_def_id.insert(name, id);
} }
// put the constructor into the def_list // 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) }) RwLock::new(TopLevelDef::Initializer { class_id: DefinitionId(class_def_id) })
.into(), .into(),
None, None,
)); ));
// class, put its def_id into the to be analyzed set // 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))) Ok((class_name, DefinitionId(class_def_id)))
} }
@ -283,10 +301,11 @@ impl TopLevelComposer {
let fun_name = name.to_string(); let fun_name = name.to_string();
// add to the definition list // add to the definition list
def_list.push(( self.definition_ast_list.push((
RwLock::new(Self::make_top_level_function_def( RwLock::new(Self::make_top_level_function_def(
name.into(), name.into(),
self.primitives.none, // unify with correct type later
self.unifier.get_fresh_var().0,
resolver, resolver,
)) ))
.into(), .into(),
@ -294,7 +313,7 @@ impl TopLevelComposer {
)); ));
// return // 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()), _ => 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 /// step 1, analyze the type vars associated with top level class
fn analyze_top_level_class_type_var(&mut self) -> Result<(), String> { fn analyze_top_level_class_type_var(&mut self) -> Result<(), String> {
let mut def_list = self.definition_ast_list.write(); for (class_def, class_ast) in self.definition_ast_list {
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() {
// only deal with class def here // only deal with class def here
let mut class_def = class_def.write(); let mut class_def = class_def.write();
let (class_bases_ast, class_def_type_vars, class_resolver) = { 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.as_ref().unwrap().lock();
let class_resolver = class_resolver.deref();
let mut is_generic = false; let mut is_generic = false;
for b in class_bases_ast { for b in class_bases_ast {
match &b.node { match &b.node {
@ -335,65 +349,56 @@ impl TopLevelComposer {
// things like `class A(Generic[T, V, ImportedModule.T])` is not supported // things like `class A(Generic[T, V, ImportedModule.T])` is not supported
// i.e. only simple names are allowed in the subscript // i.e. only simple names are allowed in the subscript
// should update the TopLevelDef::Class.typevars and the TypeEnum::TObj.params // 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 { if !is_generic {
is_generic = true; is_generic = true;
} else { } else {
return Err("Only single Generic[...] can be in bases".into()); 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 `class A(Generic[T, V, G])`
if let ast::ExprKind::Tuple { elts, .. } = &slice.node { if let ast::ExprKind::Tuple { elts, .. } = &slice.node {
// parse the type vars type_var_list.extend(elts.iter());
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);
// `class A(Generic[T])` // `class A(Generic[T])`
} else { } else {
let ty = class_resolver.parse_type_annotation( type_var_list.push(slice.deref());
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);
} }
// 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 // 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, /// if the type var associated with class `B` has not been handled properly,
/// the parse of type annotation of `B[int, bool]` will fail /// the parse of type annotation of `B[int, bool]` will fail
fn analyze_top_level_class_bases(&mut self) -> Result<(), String> { fn analyze_top_level_class_bases(&mut self) -> Result<(), String> {
let mut def_list = self.definition_ast_list.write(); for (class_def, class_ast) in self.definition_ast_list.iter_mut() {
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() {
let mut class_def = class_def.write(); let mut class_def = class_def.write();
let (class_bases, class_ancestors, class_resolver) = { let (class_bases, class_ancestors, class_resolver) = {
if let TopLevelDef::Class { ancestors, resolver, .. } = class_def.deref_mut() { 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.as_ref().unwrap().lock();
let class_resolver = class_resolver.deref();
let mut has_base = false;
for b in class_bases { for b in class_bases {
// type vars have already been handled, so skip on `Generic[...]` // type vars have already been handled, so skip on `Generic[...]`
if let ast::ExprKind::Subscript { value, .. } = &b.node { if matches!(
if let ast::ExprKind::Name { id, .. } = &value.node { &b.node,
if id == "Generic" { ast::ExprKind::Subscript { value, .. }
continue; 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( let base_ty = class_resolver.parse_type_annotation(
converted_top_level, &temp_def_list,
unifier.borrow_mut(), self.unifier.borrow_mut(),
primitives, &self.primitives,
b, b
)?; )?;
let base_id = 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 *obj_id
} else { } else {
return Err("expect concrete class/type to be base class".into()); 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) { // TODO: when base class is generic, record the generic type parameter
class_ancestors.push(base_id); // TODO: check to prevent cyclic base class
} else { class_ancestors.push(base_id);
return Err("cannot specify the same base class twice".into());
}
} }
} }
Ok(()) Ok(())
} }
/// step 3, class fields and methods /// 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> { 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; let mut max_iter = to_be_analyzed_class.len() * 4;
'class: loop { 'class: loop {
if to_be_analyzed_class.is_empty() && { if to_be_analyzed_class.is_empty() && {
@ -506,6 +505,8 @@ impl TopLevelComposer {
unreachable!("should be class def ast") 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 all_base_class_analyzed = {
let not_yet_analyzed = let not_yet_analyzed =
@ -524,16 +525,7 @@ impl TopLevelComposer {
let class_bases_ty = class_bases_ast let class_bases_ty = class_bases_ast
.iter() .iter()
.filter_map(|x| { .filter_map(|x| {
class_resolver self.parse_type_annotation(class_resolver, x).ok()
.as_ref()
.lock()
.parse_type_annotation(
converted_top_level,
unifier.borrow_mut(),
primitives,
x,
)
.ok()
}) })
.collect_vec(); .collect_vec();
@ -564,12 +556,7 @@ impl TopLevelComposer {
})? })?
.as_ref(); .as_ref();
let ty = class_resolver.as_ref().lock().parse_type_annotation( let ty = self.parse_type_annotation(class_resolver, annotation)?;
converted_top_level,
unifier.borrow_mut(),
primitives,
annotation,
)?;
if !Self::check_ty_analyzed(ty, unifier, to_be_analyzed_class) { if !Self::check_ty_analyzed(ty, unifier, to_be_analyzed_class) {
to_be_analyzed_class.push(DefinitionId(class_ind)); to_be_analyzed_class.push(DefinitionId(class_ind));
continue 'class; continue 'class;
@ -600,12 +587,7 @@ impl TopLevelComposer {
let ty = method_returns_ast let ty = method_returns_ast
.as_ref() .as_ref()
.map(|x| { .map(|x| {
class_resolver.as_ref().lock().parse_type_annotation( self.parse_type_annotation(class_resolver, x)
converted_top_level,
unifier.borrow_mut(),
primitives,
x.as_ref(),
)
}) })
.ok_or_else(|| "return type annotation error".to_string())??; .ok_or_else(|| "return type annotation error".to_string())??;
if !Self::check_ty_analyzed(ty, unifier, to_be_analyzed_class) { if !Self::check_ty_analyzed(ty, unifier, to_be_analyzed_class) {
@ -640,12 +622,7 @@ impl TopLevelComposer {
} => } =>
{ {
let field_ty = let field_ty =
class_resolver.as_ref().lock().parse_type_annotation( self.parse_type_annotation(class_resolver, annotation)?;
converted_top_level,
unifier.borrow_mut(),
primitives,
annotation.as_ref(),
)?;
if !Self::check_ty_analyzed( if !Self::check_ty_analyzed(
field_ty, field_ty,
unifier, unifier,

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

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

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

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