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Work on functions and parameter name resolution.

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This commit is contained in:
Jesse Brault 2025-10-31 12:14:33 -05:00
parent 9b83a531ca
commit 12a3a61156
11 changed files with 236 additions and 46 deletions
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101
src/name_analysis/first_pass.rs
View File

@ -1,7 +1,7 @@
use crate::ast::node::{
CompilationUnit, ConcreteUseStatement, ConcreteUseStatementSuffix, Function, FunctionBody,
GenericParameters, Identifier, IdentifierOrFqn, Module, ModuleLevelDeclaration, Parameters,
PrimitiveType, ReturnType, StarUseStatement, TypeUse, TypedArray, UseStatement,
GenericParameters, Identifier, IdentifierOrFqn, Module, ModuleLevelDeclaration, Parameter,
Parameters, PrimitiveType, ReturnType, StarUseStatement, TypeUse, TypedArray, UseStatement,
UseStatementIdentifier, UseStatementPrefix,
};
use crate::diagnostic::DmDiagnostic;
@ -14,7 +14,7 @@ use crate::name_analysis::symbol::primitive_type_symbol::PrimitiveTypeSymbol;
use crate::name_analysis::symbol::source_definition::SourceDefinition;
use crate::name_analysis::symbol::type_symbol::TypeSymbol;
use crate::name_analysis::symbol::use_symbol::{ConcreteUseSymbol, StarUseSymbol};
use crate::name_analysis::symbol_table::SymbolTable;
use crate::name_analysis::symbol_table::{SymbolInsertError, SymbolTable};
use crate::name_analysis::util::{
format_fqn, handle_insert_error, handle_lookup_error, join_fqn_parts,
};
@ -243,8 +243,6 @@ fn na_p1_function(
symbol_table: &mut SymbolTable,
diagnostics: &mut Vec<DmDiagnostic>,
) -> Option<Rc<RefCell<FunctionSymbol>>> {
symbol_table.push_scope(&format!("FunctionScope {}", function.identifier().name()));
let to_insert = FunctionSymbol::new(
&symbol_table.resolve_fqn(Rc::from(function.identifier().name())),
function.is_public(),
@ -253,8 +251,26 @@ fn na_p1_function(
);
let function_symbol = match symbol_table.insert_function_symbol(to_insert) {
Ok(function_symbol) => {
{
let mut as_ref_mut = function_symbol.borrow_mut();
Some(function_symbol)
}
Err(symbol_insert_error) => {
handle_insert_error(
symbol_insert_error,
function.identifier().name(),
function.identifier().file_id(),
function.identifier().range(),
diagnostics,
);
None
}
};
if function_symbol.is_some() {
let mut as_ref_mut = function_symbol.as_ref().unwrap().borrow_mut();
// push a scope for this function
symbol_table.push_scope(&format!("FunctionScope {}", function.identifier().name()));
// generics
na_p1_generic_parameters(function.generics_mut(), symbol_table, diagnostics);
@ -271,22 +287,14 @@ fn na_p1_function(
if let Some(type_symbol) = return_type {
as_ref_mut.set_return_type(type_symbol);
}
}
Some(function_symbol)
}
Err(symbol_insert_error) => {
handle_insert_error(
symbol_insert_error,
function.identifier().name(),
function.identifier().file_id(),
function.identifier().range(),
diagnostics,
);
None
}
};
symbol_table.push_scope(&format!("FunctionBodyScope {}", function.identifier().name()));
na_p1_function_body(function.function_body_mut(), symbol_table, diagnostics);
symbol_table.pop_scope();
symbol_table.pop_scope();
}
function_symbol
}
@ -296,7 +304,40 @@ fn na_p1_parameters(
symbol_table: &mut SymbolTable,
diagnostics: &mut Vec<DmDiagnostic>,
) -> Vec<Rc<RefCell<ParameterSymbol>>> {
todo!()
parameters
.parameters_mut()
.map(|parameter| na_p1_parameter(parameter, symbol_table, diagnostics))
.filter(Option::is_some)
.map(Option::unwrap)
.collect()
}
fn na_p1_parameter(
parameter: &mut Parameter,
symbol_table: &mut SymbolTable,
diagnostics: &mut Vec<DmDiagnostic>,
) -> Option<Rc<RefCell<ParameterSymbol>>> {
let parameter_type_symbol = na_p1_type_use(parameter.type_use_mut(), symbol_table, diagnostics);
let to_insert = ParameterSymbol::new(
parameter.identifier().name(),
Some(SourceDefinition::from_identifier(parameter.identifier())),
parameter_type_symbol,
);
match symbol_table.insert_parameter_symbol(to_insert) {
Ok(parameter_symbol) => {
Some(parameter_symbol)
}
Err(symbol_insert_error) => {
handle_insert_error(
symbol_insert_error,
parameter.identifier().name(),
parameter.identifier().file_id(),
parameter.identifier().range(),
diagnostics,
);
None
}
}
}
fn na_p1_return_type(
@ -430,5 +471,19 @@ fn na_p1_function_body(
symbol_table: &mut SymbolTable,
diagnostics: &mut Vec<DmDiagnostic>,
) {
todo!()
match function_body {
FunctionBody::FunctionAliasBody(alias_body) => {
// no-op, resolve in pass 2
}
FunctionBody::FunctionEqualsBody(equals_body) => {
// see below
}
FunctionBody::FunctionBlockBody(block_body) => {
// we need to do all insertion/resolution in pass 2, because we
// might call functions/use classes/etc from the same compilation
// unit which haven't been defined yet. So the strategy is to set
// the scope id for the body and then in pass 2, set the symbol
// table's current scope to that id.
}
}
}

24
src/name_analysis/mod.rs
View File

@ -71,6 +71,8 @@ mod tests {
use codespan_reporting::term::termcolor::{ColorChoice, StandardStream};
use pest::Parser;
use std::collections::HashMap;
use std::rc::Rc;
use crate::name_analysis::symbol::use_symbol::StarUseSymbol;
fn parse_compilation_units<'a>(
files: &mut SimpleFiles<&'a str, &'a str>,
@ -189,4 +191,26 @@ mod tests {
)]);
assert_number_of_diagnostics(sources, &mut SymbolTable::new(), 1);
}
#[test]
fn sees_println() {
let sources = HashMap::from([(
"main.dm",
"
fn main(args: Array<String>)
println args
end
"
)]);
let mut symbol_table = SymbolTable::new();
let global_std_core_use = StarUseSymbol::new(
&[Rc::from("std"), Rc::from("core")],
None
);
symbol_table.insert_star_use_symbol(global_std_core_use)
.expect("Failed to insert star use symbol.");
add_std_core_symbols(&mut symbol_table).expect("Failed to add std/core symbols.");
assert_no_diagnostics(sources, &mut symbol_table);
}
}

5
src/name_analysis/symbol/class_member_symbol.rs
View File

@ -1,4 +1,5 @@
use crate::name_analysis::symbol::source_definition::SourceDefinition;
use crate::name_analysis::symbol::Symbol;
use std::fmt::{Debug, Formatter};
#[derive(Clone)]
@ -35,8 +36,10 @@ impl ClassMemberSymbol {
pub fn declared_name(&self) -> &str {
&self.declared_name
}
}
pub fn source_definition(&self) -> Option<&SourceDefinition> {
impl Symbol for ClassMemberSymbol {
fn source_definition(&self) -> Option<&SourceDefinition> {
self.source_definition.as_ref()
}
}

28
src/name_analysis/symbol/lv_symbol.rs Normal file
View File

@ -0,0 +1,28 @@
use std::cell::RefCell;
use std::rc::Rc;
use crate::name_analysis::symbol::class_member_symbol::ClassMemberSymbol;
use crate::name_analysis::symbol::parameter_symbol::ParameterSymbol;
use crate::name_analysis::symbol::Symbol;
use crate::name_analysis::symbol::variable_symbol::VariableSymbol;
pub enum LVSymbol {
ClassMember(Rc<RefCell<ClassMemberSymbol>>),
Parameter(Rc<RefCell<ParameterSymbol>>),
Variable(Rc<RefCell<VariableSymbol>>),
}
impl LVSymbol {
pub fn to_symbol(self) -> Rc<RefCell<dyn Symbol>> {
match self {
LVSymbol::ClassMember(class_member_symbol) => {
class_member_symbol as Rc<RefCell<dyn Symbol>>
}
LVSymbol::Parameter(parameter_symbol) => {
parameter_symbol as Rc<RefCell<dyn Symbol>>
}
LVSymbol::Variable(variable_symbol) => {
variable_symbol as Rc<RefCell<dyn Symbol>>
}
}
}
}

1
src/name_analysis/symbol/mod.rs
View File

@ -3,6 +3,7 @@ pub mod class_symbol;
pub mod function_symbol;
pub mod generic_type_symbol;
pub mod interface_symbol;
pub mod lv_symbol;
pub mod module_level_symbol;
pub mod module_symbol;
pub mod parameter_symbol;

16
src/name_analysis/symbol/parameter_symbol.rs
View File

@ -1,9 +1,11 @@
use crate::name_analysis::symbol::source_definition::SourceDefinition;
use crate::name_analysis::symbol::type_symbol::TypeSymbol;
use crate::name_analysis::symbol::Symbol;
use std::fmt::{Debug, Formatter};
use std::rc::Rc;
pub struct ParameterSymbol {
declared_name: String,
declared_name: Rc<str>,
source_definition: Option<SourceDefinition>,
type_symbol: Option<TypeSymbol>,
}
@ -14,8 +16,8 @@ impl ParameterSymbol {
source_definition: Option<SourceDefinition>,
type_symbol: Option<TypeSymbol>,
) -> Self {
ParameterSymbol {
declared_name: declared_name.to_string(),
Self {
declared_name: Rc::from(declared_name),
source_definition,
type_symbol,
}
@ -25,7 +27,13 @@ impl ParameterSymbol {
&self.declared_name
}
pub fn source_definition(&self) -> Option<&SourceDefinition> {
pub fn declared_name_owned(&self) -> Rc<str> {
self.declared_name.clone()
}
}
impl Symbol for ParameterSymbol {
fn source_definition(&self) -> Option<&SourceDefinition> {
self.source_definition.as_ref()
}
}

11
src/name_analysis/symbol/variable_symbol.rs
View File

@ -1,4 +1,5 @@
use crate::name_analysis::symbol::source_definition::SourceDefinition;
use crate::name_analysis::symbol::Symbol;
use std::fmt::{Debug, Formatter};
#[derive(Clone)]
@ -9,7 +10,11 @@ pub struct VariableSymbol {
}
impl VariableSymbol {
pub fn new(declared_name: &str, is_mutable: bool, source_definition: Option<SourceDefinition>) -> Self {
pub fn new(
declared_name: &str,
is_mutable: bool,
source_definition: Option<SourceDefinition>,
) -> Self {
VariableSymbol {
declared_name: declared_name.to_string(),
is_mutable,
@ -24,8 +29,10 @@ impl VariableSymbol {
pub fn is_mutable(&self) -> bool {
self.is_mutable
}
}
pub fn source_definition(&self) -> Option<&SourceDefinition> {
impl Symbol for VariableSymbol {
fn source_definition(&self) -> Option<&SourceDefinition> {
self.source_definition.as_ref()
}
}

22
src/name_analysis/symbol_table/mod.rs
View File

@ -1,6 +1,7 @@
use crate::name_analysis::symbol::function_symbol::FunctionSymbol;
use crate::name_analysis::symbol::generic_type_symbol::GenericTypeSymbol;
use crate::name_analysis::symbol::module_symbol::ModuleSymbol;
use crate::name_analysis::symbol::parameter_symbol::ParameterSymbol;
use crate::name_analysis::symbol::type_symbol::TypeSymbol;
use crate::name_analysis::symbol::usable_symbol::UsableSymbol;
use crate::name_analysis::symbol::use_symbol::{ConcreteUseSymbol, StarUseSymbol};
@ -112,6 +113,10 @@ impl SymbolTable {
})
}
pub fn register_module(&mut self, fqn_parts: &[&str]) {
self.symbol_tree.register_module_by_fqn_parts(fqn_parts);
}
pub fn find_usable_symbols_by_base_fqn(
&self,
fqn_parts: &[Rc<str>],
@ -205,6 +210,23 @@ impl SymbolTable {
}
}
pub fn insert_parameter_symbol(
&mut self,
parameter_symbol: ParameterSymbol,
) -> Result<Rc<RefCell<ParameterSymbol>>, SymbolInsertError> {
if let Some(defined_symbol) = self
.current_scope()
.find_lv_symbol(parameter_symbol.declared_name())
{
Err(SymbolAlreadyDefined(defined_symbol.to_symbol()))
} else {
let inserted = self
.current_scope_mut()
.insert_parameter_symbol(parameter_symbol);
Ok(inserted)
}
}
pub fn lookup_type(&self, declared_name: &str) -> Result<TypeSymbol, SymbolLookupError> {
let mut current_scope: Option<&Scope> = Some(self.current_scope());
while let Some(scope) = current_scope.take() {

36
src/name_analysis/symbol_table/scope.rs
View File

@ -3,6 +3,7 @@ use crate::name_analysis::symbol::class_symbol::ClassSymbol;
use crate::name_analysis::symbol::function_symbol::FunctionSymbol;
use crate::name_analysis::symbol::generic_type_symbol::GenericTypeSymbol;
use crate::name_analysis::symbol::interface_symbol::InterfaceSymbol;
use crate::name_analysis::symbol::lv_symbol::LVSymbol;
use crate::name_analysis::symbol::module_level_symbol::ModuleLevelSymbol;
use crate::name_analysis::symbol::module_symbol::ModuleSymbol;
use crate::name_analysis::symbol::parameter_symbol::ParameterSymbol;
@ -26,9 +27,9 @@ pub struct Scope {
class_symbols: HashMap<Rc<str>, Rc<RefCell<ClassSymbol>>>,
generic_symbols: HashMap<Rc<str>, Rc<RefCell<GenericTypeSymbol>>>,
function_symbols: HashMap<Rc<str>, Rc<RefCell<FunctionSymbol>>>,
parameter_symbols: HashMap<Rc<str>, ParameterSymbol>,
variable_symbols: HashMap<Rc<str>, VariableSymbol>,
class_member_symbols: HashMap<Rc<str>, ClassMemberSymbol>,
parameter_symbols: HashMap<Rc<str>, Rc<RefCell<ParameterSymbol>>>,
variable_symbols: HashMap<Rc<str>, Rc<RefCell<VariableSymbol>>>,
class_member_symbols: HashMap<Rc<str>, Rc<RefCell<ClassMemberSymbol>>>,
debug_name: String,
}
@ -126,11 +127,22 @@ impl Scope {
self.class_symbols.get(declared_name)
}
pub fn insert_generic_type_symbol(&mut self, symbol: GenericTypeSymbol) -> Rc<RefCell<GenericTypeSymbol>> {
pub fn insert_generic_type_symbol(
&mut self,
symbol: GenericTypeSymbol,
) -> Rc<RefCell<GenericTypeSymbol>> {
let key = symbol.declared_name_owned();
insert_symbol!(self.generic_symbols, symbol, key)
}
pub fn insert_parameter_symbol(
&mut self,
symbol: ParameterSymbol,
) -> Rc<RefCell<ParameterSymbol>> {
let key = symbol.declared_name_owned();
insert_symbol!(self.parameter_symbols, symbol, key)
}
pub fn find_module_level_symbol(&self, declared_name: &str) -> Option<ModuleLevelSymbol> {
self.module_symbols
.get(declared_name)
@ -168,6 +180,22 @@ impl Scope {
})
}
pub fn find_lv_symbol(&self, declared_name: &str) -> Option<LVSymbol> {
self.class_member_symbols
.get(declared_name)
.map(|class_member_symbol| LVSymbol::ClassMember(class_member_symbol.clone()))
.or_else(|| {
self.parameter_symbols
.get(declared_name)
.map(|parameter_symbol| LVSymbol::Parameter(parameter_symbol.clone()))
})
.or_else(|| {
self.variable_symbols
.get(declared_name)
.map(|variable_symbol| LVSymbol::Variable(variable_symbol.clone()))
})
}
pub fn debug_name(&self) -> &str {
&self.debug_name
}

9
src/name_analysis/symbol_table/symbol_tree.rs
View File

@ -63,6 +63,15 @@ impl SymbolTree {
self.recurse_register_module(&module_symbol.borrow().fqn_parts());
}
pub fn register_module_by_fqn_parts(&mut self, fqn_parts: &[&str]) {
self.recurse_register_module(
&fqn_parts
.iter()
.map(|part| Rc::from(*part))
.collect::<Vec<Rc<str>>>(),
);
}
fn recurse_register_module(&mut self, fqn_parts: &[Rc<str>]) {
if fqn_parts.len() == 0 {
panic!("Unable to register module fqn with no parts.")

11
src/std_core/mod.rs
View File

@ -7,11 +7,16 @@ use std::cell::RefCell;
use std::rc::Rc;
pub fn add_std_core_symbols(symbol_table: &mut SymbolTable) -> Result<(), SymbolInsertError> {
symbol_table.register_module(&["std"]);
symbol_table.register_module(&["std", "core"]);
symbol_table.set_current_fqn(&vec!["std", "core"]);
let println_msg_symbol = ParameterSymbol::new("msg", None, Some(
TypeSymbol::Primitive(PrimitiveTypeSymbol::Any)
));
let println_msg_symbol = ParameterSymbol::new(
"msg",
None,
Some(TypeSymbol::Primitive(PrimitiveTypeSymbol::Any)),
);
let println_symbol = FunctionSymbol::with_parameters_and_return_type(
&symbol_table.resolve_fqn(Rc::from("println")),