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[core] Add IdentifierInfo 

Keeps track of whether an identifier refers to a global or local
variable.
This commit is contained in:
David Mak 2024-10-04 13:06:05 +08:00
parent 1407553a2f
commit 192290889b
5 changed files with 59 additions and 39 deletions
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8
nac3core/src/codegen/test.rs
View File

@ -28,7 +28,7 @@ use crate::{
DefinitionId, FunInstance, TopLevelContext, TopLevelDef,
},
typecheck::{
type_inferencer::{FunctionData, Inferencer, PrimitiveStore},
type_inferencer::{FunctionData, IdentifierInfo, Inferencer, PrimitiveStore},
typedef::{FunSignature, FuncArg, Type, TypeEnum, Unifier, VarMap},
},
};
@ -141,7 +141,8 @@ fn test_primitives() {
};
let mut virtual_checks = Vec::new();
let mut calls = HashMap::new();
let mut identifiers: HashSet<_> = ["a".into(), "b".into()].into();
let mut identifiers: HashMap<_, _> =
["a".into(), "b".into()].map(|id| (id, IdentifierInfo::default())).into();
let mut inferencer = Inferencer {
top_level: &top_level,
function_data: &mut function_data,
@ -320,7 +321,8 @@ fn test_simple_call() {
};
let mut virtual_checks = Vec::new();
let mut calls = HashMap::new();
let mut identifiers: HashSet<_> = ["a".into(), "foo".into()].into();
let mut identifiers: HashMap<_, _> =
["a".into(), "foo".into()].map(|id| (id, IdentifierInfo::default())).into();
let mut inferencer = Inferencer {
top_level: &top_level,
function_data: &mut function_data,

9
nac3core/src/toplevel/composer.rs
View File

@ -7,7 +7,7 @@ use crate::{
codegen::{expr::get_subst_key, stmt::exn_constructor},
symbol_resolver::SymbolValue,
typecheck::{
type_inferencer::{FunctionData, Inferencer},
type_inferencer::{FunctionData, IdentifierInfo, Inferencer},
typedef::{TypeVar, VarMap},
},
};
@ -2057,11 +2057,12 @@ impl TopLevelComposer {
})
};
let mut identifiers = {
let mut result: HashSet<_> = HashSet::new();
let mut result = HashMap::new();
if self_type.is_some() {
result.insert("self".into());
result.insert("self".into(), IdentifierInfo::default());
}
result.extend(inst_args.iter().map(|x| x.name));
result
.extend(inst_args.iter().map(|x| (x.name, IdentifierInfo::default())));
result
};
let mut calls: HashMap<CodeLocation, CallId> = HashMap::new();

37
nac3core/src/typecheck/function_check.rs
View File

@ -1,4 +1,7 @@
use std::{collections::HashSet, iter::once};
use std::{
collections::{HashMap, HashSet},
iter::once,
};
use nac3parser::ast::{
self, Constant, Expr, ExprKind,
@ -7,7 +10,7 @@ use nac3parser::ast::{
};
use super::{
type_inferencer::Inferencer,
type_inferencer::{IdentifierInfo, Inferencer},
typedef::{Type, TypeEnum},
};
use crate::toplevel::helper::PrimDef;
@ -24,15 +27,15 @@ impl<'a> Inferencer<'a> {
fn check_pattern(
&mut self,
pattern: &Expr<Option<Type>>,
defined_identifiers: &mut HashSet<StrRef>,
defined_identifiers: &mut HashMap<StrRef, IdentifierInfo>,
) -> Result<(), HashSet<String>> {
match &pattern.node {
ExprKind::Name { id, .. } if id == &"none".into() => {
Err(HashSet::from([format!("cannot assign to a `none` (at {})", pattern.location)]))
}
ExprKind::Name { id, .. } => {
if !defined_identifiers.contains(id) {
defined_identifiers.insert(*id);
if !defined_identifiers.contains_key(id) {
defined_identifiers.insert(*id, IdentifierInfo::default());
}
self.should_have_value(pattern)?;
Ok(())
@ -72,7 +75,7 @@ impl<'a> Inferencer<'a> {
fn check_expr(
&mut self,
expr: &Expr<Option<Type>>,
defined_identifiers: &mut HashSet<StrRef>,
defined_identifiers: &mut HashMap<StrRef, IdentifierInfo>,
) -> Result<(), HashSet<String>> {
// there are some cases where the custom field is None
if let Some(ty) = &expr.custom {
@ -93,7 +96,7 @@ impl<'a> Inferencer<'a> {
return Ok(());
}
self.should_have_value(expr)?;
if !defined_identifiers.contains(id) {
if !defined_identifiers.contains_key(id) {
match self.function_data.resolver.get_symbol_type(
self.unifier,
&self.top_level.definitions.read(),
@ -101,7 +104,7 @@ impl<'a> Inferencer<'a> {
*id,
) {
Ok(_) => {
self.defined_identifiers.insert(*id);
self.defined_identifiers.insert(*id, IdentifierInfo::default());
}
Err(e) => {
return Err(HashSet::from([format!(
@ -174,9 +177,7 @@ impl<'a> Inferencer<'a> {
let mut defined_identifiers = defined_identifiers.clone();
for arg in &args.args {
// TODO: should we check the types here?
if !defined_identifiers.contains(&arg.node.arg) {
defined_identifiers.insert(arg.node.arg);
}
defined_identifiers.entry(arg.node.arg).or_default();
}
self.check_expr(body, &mut defined_identifiers)?;
}
@ -239,7 +240,7 @@ impl<'a> Inferencer<'a> {
fn check_stmt(
&mut self,
stmt: &Stmt<Option<Type>>,
defined_identifiers: &mut HashSet<StrRef>,
defined_identifiers: &mut HashMap<StrRef, IdentifierInfo>,
) -> Result<bool, HashSet<String>> {
match &stmt.node {
StmtKind::For { target, iter, body, orelse, .. } => {
@ -265,9 +266,11 @@ impl<'a> Inferencer<'a> {
let body_returned = self.check_block(body, &mut body_identifiers)?;
let orelse_returned = self.check_block(orelse, &mut orelse_identifiers)?;
for ident in &body_identifiers {
if !defined_identifiers.contains(ident) && orelse_identifiers.contains(ident) {
defined_identifiers.insert(*ident);
for ident in body_identifiers.keys() {
if !defined_identifiers.contains_key(ident)
&& orelse_identifiers.contains_key(ident)
{
defined_identifiers.insert(*ident, IdentifierInfo::default());
}
}
Ok(body_returned && orelse_returned)
@ -298,7 +301,7 @@ impl<'a> Inferencer<'a> {
let mut defined_identifiers = defined_identifiers.clone();
let ast::ExcepthandlerKind::ExceptHandler { name, body, .. } = &handler.node;
if let Some(name) = name {
defined_identifiers.insert(*name);
defined_identifiers.insert(*name, IdentifierInfo::default());
}
self.check_block(body, &mut defined_identifiers)?;
}
@ -370,7 +373,7 @@ impl<'a> Inferencer<'a> {
pub fn check_block(
&mut self,
block: &[Stmt<Option<Type>>],
defined_identifiers: &mut HashSet<StrRef>,
defined_identifiers: &mut HashMap<StrRef, IdentifierInfo>,
) -> Result<bool, HashSet<String>> {
let mut ret = false;
for stmt in block {

32
nac3core/src/typecheck/type_inferencer/mod.rs
View File

@ -88,6 +88,20 @@ impl PrimitiveStore {
}
}
/// Information regarding a defined identifier.
#[derive(Clone, Copy, Debug, Default)]
pub struct IdentifierInfo {
/// Whether this identifier refers to a global variable.
pub is_global: bool,
}
impl IdentifierInfo {
#[must_use]
pub fn new() -> IdentifierInfo {
IdentifierInfo::default()
}
}
pub struct FunctionData {
pub resolver: Arc<dyn SymbolResolver + Send + Sync>,
pub return_type: Option<Type>,
@ -96,7 +110,7 @@ pub struct FunctionData {
pub struct Inferencer<'a> {
pub top_level: &'a TopLevelContext,
pub defined_identifiers: HashSet<StrRef>,
pub defined_identifiers: HashMap<StrRef, IdentifierInfo>,
pub function_data: &'a mut FunctionData,
pub unifier: &'a mut Unifier,
pub primitives: &'a PrimitiveStore,
@ -228,9 +242,7 @@ impl<'a> Fold<()> for Inferencer<'a> {
handler.location,
));
if let Some(name) = name {
if !self.defined_identifiers.contains(&name) {
self.defined_identifiers.insert(name);
}
self.defined_identifiers.entry(name).or_default();
if let Some(old_typ) = self.variable_mapping.insert(name, typ) {
let loc = handler.location;
self.unifier.unify(old_typ, typ).map_err(|e| {
@ -553,7 +565,7 @@ impl<'a> Fold<()> for Inferencer<'a> {
unreachable!("must be tobj")
}
} else {
if !self.defined_identifiers.contains(id) {
if !self.defined_identifiers.contains_key(id) {
match self.function_data.resolver.get_symbol_type(
self.unifier,
&self.top_level.definitions.read(),
@ -561,7 +573,7 @@ impl<'a> Fold<()> for Inferencer<'a> {
*id,
) {
Ok(_) => {
self.defined_identifiers.insert(*id);
self.defined_identifiers.insert(*id, IdentifierInfo::default());
}
Err(e) => {
return report_error(
@ -626,8 +638,8 @@ impl<'a> Inferencer<'a> {
fn infer_pattern<T>(&mut self, pattern: &ast::Expr<T>) -> Result<(), InferenceError> {
match &pattern.node {
ExprKind::Name { id, .. } => {
if !self.defined_identifiers.contains(id) {
self.defined_identifiers.insert(*id);
if !self.defined_identifiers.contains_key(id) {
self.defined_identifiers.insert(*id, IdentifierInfo::default());
}
Ok(())
}
@ -736,8 +748,8 @@ impl<'a> Inferencer<'a> {
let mut defined_identifiers = self.defined_identifiers.clone();
for arg in &args.args {
let name = &arg.node.arg;
if !defined_identifiers.contains(name) {
defined_identifiers.insert(*name);
if !defined_identifiers.contains_key(name) {
defined_identifiers.insert(*name, IdentifierInfo::default());
}
}
let fn_args: Vec<_> = args

12
nac3core/src/typecheck/type_inferencer/test.rs
View File

@ -519,7 +519,7 @@ impl TestEnvironment {
primitives: &mut self.primitives,
virtual_checks: &mut self.virtual_checks,
calls: &mut self.calls,
defined_identifiers: HashSet::default(),
defined_identifiers: HashMap::default(),
in_handler: false,
}
}
@ -595,8 +595,9 @@ fn test_basic(source: &str, mapping: &HashMap<&str, &str>, virtuals: &[(&str, &s
println!("source:\n{source}");
let mut env = TestEnvironment::new();
let id_to_name = std::mem::take(&mut env.id_to_name);
let mut defined_identifiers: HashSet<_> = env.identifier_mapping.keys().copied().collect();
defined_identifiers.insert("virtual".into());
let mut defined_identifiers: HashMap<_, _> =
env.identifier_mapping.keys().copied().map(|id| (id, IdentifierInfo::default())).collect();
defined_identifiers.insert("virtual".into(), IdentifierInfo::default());
let mut inferencer = env.get_inferencer();
inferencer.defined_identifiers.clone_from(&defined_identifiers);
let statements = parse_program(source, FileName::default()).unwrap();
@ -741,8 +742,9 @@ fn test_primitive_magic_methods(source: &str, mapping: &HashMap<&str, &str>) {
println!("source:\n{source}");
let mut env = TestEnvironment::basic_test_env();
let id_to_name = std::mem::take(&mut env.id_to_name);
let mut defined_identifiers: HashSet<_> = env.identifier_mapping.keys().copied().collect();
defined_identifiers.insert("virtual".into());
let mut defined_identifiers: HashMap<_, _> =
env.identifier_mapping.keys().copied().map(|id| (id, IdentifierInfo::default())).collect();
defined_identifiers.insert("virtual".into(), IdentifierInfo::default());
let mut inferencer = env.get_inferencer();
inferencer.defined_identifiers.clone_from(&defined_identifiers);
let statements = parse_program(source, FileName::default()).unwrap();