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start to handle base inheritance methods, fields

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This commit is contained in:
ychenfo 2021-08-18 17:32:55 +08:00
parent 6279dbb589
commit 9cb07e6f04
1 changed files with 41 additions and 10 deletions
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51
nac3core/src/top_level.rs
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@ -10,7 +10,7 @@ use itertools::Itertools;
use parking_lot::{Mutex, RwLock};
use rustpython_parser::ast::{self, Stmt};
#[derive(PartialEq, Eq, PartialOrd, Ord, Clone, Copy)]
#[derive(PartialEq, Eq, PartialOrd, Ord, Clone, Copy, Hash)]
pub struct DefinitionId(pub usize);
pub enum TopLevelDef {
@ -462,9 +462,9 @@ impl TopLevelComposer {
}
/// step 3, class fields and methods
// FIXME: need analyze base classes here
// FIXME: how to deal with self type
// FIXME: how to prevent cycles
// 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();
@ -472,20 +472,27 @@ impl TopLevelComposer {
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() {
if to_be_analyzed_class.is_empty() && { max_iter -= 1; max_iter > 0 } {
break;
}
let class_ind = to_be_analyzed_class.remove(0).0;
let (class_name, class_body, class_resolver) = {
let (class_name,
class_body_ast,
class_bases_ast,
class_resolver,
class_ancestors
) = {
let (class_def, class_ast) = &mut def_ast_list[class_ind];
if let Some(ast::Located {
node: ast::StmtKind::ClassDef { name, body, .. }, ..
node: ast::StmtKind::ClassDef { name, body, bases, .. }, ..
}) = class_ast.as_ref()
{
if let TopLevelDef::Class { resolver, .. } = class_def.write().deref() {
(name, body, resolver.as_ref().unwrap().clone())
if let TopLevelDef::Class { resolver, ancestors, .. } = class_def.write().deref() {
(name, body, bases, resolver.as_ref().unwrap().clone(), ancestors.clone())
} else {
unreachable!()
}
@ -494,11 +501,35 @@ impl TopLevelComposer {
}
};
let all_base_class_analyzed = {
let not_yet_analyzed = to_be_analyzed_class.clone().into_iter().collect::<HashSet<_>>();
let base = class_ancestors.clone().into_iter().collect::<HashSet<_>>();
let intersection = not_yet_analyzed.intersection(&base).collect_vec();
intersection.is_empty()
};
if !all_base_class_analyzed {
to_be_analyzed_class.push(DefinitionId(class_ind));
continue 'class;
}
// get the bases type, can directly do this since it
// already pass the check in the previous stages
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()
})
.collect_vec();
// need these vectors to check re-defining methods, class fields
// and store the parsed result in case some method cannot be typed for now
let mut class_methods_parsing_result: Vec<(String, Type, DefinitionId)> = vec![];
let mut class_fields_parsing_result: Vec<(String, Type)> = vec![];
for b in class_body {
for b in class_body_ast {
if let ast::StmtKind::FunctionDef {
args: method_args_ast,
body: method_body_ast,