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Clean up context

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This commit is contained in:
Jeff 2024-09-02 05:53:09 -04:00
parent d32061ebba
commit 4433c587f5
4 changed files with 30 additions and 30 deletions
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9
dust-lang/src/ast/mod.rs
View File

@ -13,7 +13,7 @@ use std::{
use serde::{Deserialize, Serialize};
use crate::{Context, ContextError};
use crate::{core_library, Context, ContextError};
pub type Span = (usize, usize);
@ -68,6 +68,13 @@ impl AbstractSyntaxTree {
context: Context::new(),
}
}
pub fn with_core_library() -> Self {
Self {
statements: VecDeque::new(),
context: core_library().create_child(),
}
}
}
impl Default for AbstractSyntaxTree {

29
dust-lang/src/context.rs
View File

@ -13,7 +13,7 @@ pub type Associations = HashMap<Identifier, (ContextData, usize)>;
#[derive(Debug, Clone)]
pub struct Context {
associations: Arc<RwLock<Associations>>,
parent: Arc<RwLock<Option<Context>>>,
parent: Option<Box<Context>>,
}
impl Context {
@ -24,7 +24,7 @@ impl Context {
pub fn with_data(data: Associations) -> Self {
Self {
associations: Arc::new(RwLock::new(data)),
parent: Arc::new(RwLock::new(None)),
parent: None,
}
}
@ -36,14 +36,10 @@ impl Context {
pub fn create_child(&self) -> Self {
Self {
associations: Arc::new(RwLock::new(HashMap::new())),
parent: Arc::new(RwLock::new(Some(self.clone()))),
parent: Some(Box::new(self.clone())),
}
}
pub fn assign_parent(&self, parent: Self) {
self.parent.write().unwrap().replace(parent);
}
/// Returns the number of associated identifiers in the context.
pub fn association_count(&self) -> Result<usize, ContextError> {
Ok(self.associations.read()?.len())
@ -53,7 +49,7 @@ impl Context {
pub fn contains(&self, identifier: &Identifier) -> Result<bool, ContextError> {
if self.associations.read()?.contains_key(identifier) {
Ok(true)
} else if let Some(parent) = self.parent.read().unwrap().as_ref() {
} else if let Some(parent) = &self.parent {
parent.contains(identifier)
} else {
Ok(false)
@ -81,7 +77,7 @@ impl Context {
_ => {}
}
if let Some(parent) = self.parent.read().unwrap().as_ref() {
if let Some(parent) = &self.parent {
parent.get_type(identifier)
} else {
Ok(None)
@ -92,7 +88,7 @@ impl Context {
pub fn get_data(&self, identifier: &Identifier) -> Result<Option<ContextData>, ContextError> {
if let Some((variable_data, _)) = self.associations.read()?.get(identifier) {
Ok(Some(variable_data.clone()))
} else if let Some(parent) = self.parent.read().unwrap().as_ref() {
} else if let Some(parent) = &self.parent {
parent.get_data(identifier)
} else {
Ok(None)
@ -108,7 +104,7 @@ impl Context {
self.associations.read()?.get(identifier)
{
Ok(Some(value.clone()))
} else if let Some(parent) = self.parent.read().unwrap().as_ref() {
} else if let Some(parent) = &self.parent {
parent.get_variable_value(identifier)
} else {
Ok(None)
@ -124,7 +120,7 @@ impl Context {
self.associations.read()?.get(identifier)
{
Ok(Some(constructor.clone()))
} else if let Some(parent) = self.parent.read().unwrap().as_ref() {
} else if let Some(parent) = &self.parent {
parent.get_constructor(identifier)
} else {
Ok(None)
@ -144,7 +140,7 @@ impl Context {
ContextData::ConstructorType(struct_type) => Ok(Some(struct_type.clone())),
_ => Ok(None),
}
} else if let Some(parent) = self.parent.read().unwrap().as_ref() {
} else if let Some(parent) = &self.parent {
parent.get_constructor_type(identifier)
} else {
Ok(None)
@ -280,7 +276,7 @@ impl Context {
Ok(true)
} else {
let ancestor_contains = if let Some(parent) = self.parent.read().unwrap().as_ref() {
let ancestor_contains = if let Some(parent) = &self.parent {
parent.contains(identifier)?
} else {
false
@ -300,9 +296,8 @@ impl Context {
/// Recovers the context from a poisoned state by recovering data from an error.
///
/// This method is not used. The context's other methods do not return poison errors because
/// they are infallible.
pub fn recover_from_poison(&mut self, error: &ContextError) {
/// This method is not used.
pub fn _recover_from_poison(&mut self, error: &ContextError) {
log::debug!("Context is recovering from poison error");
let ContextError::PoisonErrorRecovered(recovered) = error;

8
dust-lang/src/parser.rs
View File

@ -11,8 +11,8 @@ use std::{
};
use crate::{
ast::*, core_library, Context, ContextError, DustError, Identifier, LexError, Lexer, Token,
TokenKind, TokenOwned, Type,
ast::*, Context, ContextError, DustError, Identifier, LexError, Lexer, Token, TokenKind,
TokenOwned, Type,
};
/// Parses the input into an abstract syntax tree.
@ -38,9 +38,7 @@ use crate::{
/// );
/// ```
pub fn parse(source: &str) -> Result<AbstractSyntaxTree, DustError> {
let mut tree = AbstractSyntaxTree::new();
tree.context.assign_parent(core_library().clone());
let mut tree = AbstractSyntaxTree::with_core_library();
let lexer = Lexer::new(source);
let mut parser = Parser::new(lexer);

14
dust-lang/src/vm.rs
View File

@ -357,20 +357,20 @@ impl Vm {
if let Some(ContextData::Constructor(constructor)) = get_data {
let construct_result = constructor.construct_unit();
match construct_result {
return match construct_result {
Ok(value) => Ok(Evaluation::Return(Some(value))),
Err(ConstructError::ExpectedUnit) => Ok(Evaluation::Constructor(constructor)),
Err(error) => Err(RuntimeError::ConstructError {
error,
position: identifier.position,
}),
}
} else {
Err(RuntimeError::UnassociatedIdentifier {
identifier: identifier.inner,
position: identifier.position,
})
};
}
Err(RuntimeError::UnassociatedIdentifier {
identifier: identifier.inner,
position: identifier.position,
})
}
fn run_struct(