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Remove generic position from nodes and replace with Spans

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This commit is contained in:
Jeff 2024-08-07 19:03:50 -04:00
parent 35eca1f7b4
commit 1fe26e0296
6 changed files with 70 additions and 90 deletions
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6
README.md
View File

@ -13,8 +13,8 @@ important than safety and ease of use.
### Effortless Concurrency
Rust promises *fearless* concurrency, and Dust takes it a step further by making concurrency as
simple as possible. Dust is organized into **statements**, and any sequence of statements can be
run concurrently by simply adding the `async` keyword before the block of statements.
*effortless* as possible. Dust is organized into **statements**, and any sequence of statements can
be run concurrently by simply adding the `async` keyword before the block of statements.
```dust
# This function will count from 0 to 9, sleeping for an increasing amount of
@ -28,7 +28,7 @@ count_slowly = fn (
sleep_time = i * multiplier;
thread.sleep(sleep_time)
thread.write_line(i as str)
io.write_line(i as str)
i += 1
}

44
dust-lang/src/abstract_tree.rs
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@ -5,21 +5,21 @@ use std::{
use serde::{Deserialize, Serialize};
use crate::{Identifier, Type, Value};
use crate::{Identifier, Span, Type, Value};
#[derive(Debug, Clone, Eq, PartialEq, PartialOrd, Ord, Serialize, Deserialize)]
pub struct AbstractSyntaxTree<P> {
pub nodes: VecDeque<Node<P>>,
pub struct AbstractSyntaxTree {
pub nodes: VecDeque<Node>,
}
#[derive(Debug, Clone, Eq, PartialEq, PartialOrd, Ord, Serialize, Deserialize)]
pub struct Node<P> {
pub statement: Statement<P>,
pub position: P,
pub struct Node {
pub statement: Statement,
pub position: Span,
}
impl<P> Node<P> {
pub fn new(operation: Statement<P>, position: P) -> Self {
impl Node {
pub fn new(operation: Statement, position: Span) -> Self {
Self {
statement: operation,
position,
@ -27,39 +27,39 @@ impl<P> Node<P> {
}
}
impl<P> Display for Node<P> {
impl Display for Node {
fn fmt(&self, f: &mut Formatter) -> fmt::Result {
write!(f, "{}", self.statement)
}
}
#[derive(Debug, Clone, Eq, PartialEq, PartialOrd, Ord, Serialize, Deserialize)]
pub enum Statement<P> {
pub enum Statement {
// Top-level statements
Assign(Box<Node<P>>, Box<Node<P>>),
Assign(Box<Node>, Box<Node>),
// Expressions
Add(Box<Node<P>>, Box<Node<P>>),
Add(Box<Node>, Box<Node>),
BuiltInFunctionCall {
function: BuiltInFunction,
type_arguments: Option<Vec<Node<P>>>,
value_arguments: Option<Vec<Node<P>>>,
type_arguments: Option<Vec<Node>>,
value_arguments: Option<Vec<Node>>,
},
FunctionCall {
function: Box<Node<P>>,
type_arguments: Option<Vec<Node<P>>>,
value_arguments: Option<Vec<Node<P>>>,
function: Box<Node>,
type_arguments: Option<Vec<Node>>,
value_arguments: Option<Vec<Node>>,
},
PropertyAccess(Box<Node<P>>, Box<Node<P>>),
List(Vec<Node<P>>),
Multiply(Box<Node<P>>, Box<Node<P>>),
PropertyAccess(Box<Node>, Box<Node>),
List(Vec<Node>),
Multiply(Box<Node>, Box<Node>),
// Hard-coded values
Constant(Value),
Identifier(Identifier),
}
impl<P> Statement<P> {
impl Statement {
pub fn expected_type(&self, variables: &HashMap<Identifier, Value>) -> Option<Type> {
match self {
Statement::Add(left, _) => left.statement.expected_type(variables),
@ -77,7 +77,7 @@ impl<P> Statement<P> {
}
}
impl<P> Display for Statement<P> {
impl Display for Statement {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
match self {
Statement::Assign(left, right) => write!(f, "{left} = {right}"),

30
dust-lang/src/analyzer.rs
View File

@ -7,7 +7,7 @@
/// - `Analyzer` struct
use std::collections::HashMap;
use crate::{AbstractSyntaxTree, Identifier, Node, Statement, Type, Value};
use crate::{AbstractSyntaxTree, Identifier, Node, Span, Statement, Type, Value};
/// Analyzes the abstract syntax tree for errors.
///
@ -22,10 +22,10 @@ use crate::{AbstractSyntaxTree, Identifier, Node, Statement, Type, Value};
///
/// assert!(result.is_err());
/// ```
pub fn analyze<P: Clone>(
abstract_tree: &AbstractSyntaxTree<P>,
pub fn analyze(
abstract_tree: &AbstractSyntaxTree,
variables: &HashMap<Identifier, Value>,
) -> Result<(), AnalyzerError<P>> {
) -> Result<(), AnalyzerError> {
let analyzer = Analyzer::new(abstract_tree, variables);
analyzer.analyze()
@ -44,14 +44,14 @@ pub fn analyze<P: Clone>(
/// let result = analyzer.analyze();
///
/// assert!(result.is_err());
pub struct Analyzer<'a, P> {
abstract_tree: &'a AbstractSyntaxTree<P>,
pub struct Analyzer<'a> {
abstract_tree: &'a AbstractSyntaxTree,
variables: &'a HashMap<Identifier, Value>,
}
impl<'a, P: Clone> Analyzer<'a, P> {
impl<'a> Analyzer<'a> {
pub fn new(
abstract_tree: &'a AbstractSyntaxTree<P>,
abstract_tree: &'a AbstractSyntaxTree,
variables: &'a HashMap<Identifier, Value>,
) -> Self {
Self {
@ -60,7 +60,7 @@ impl<'a, P: Clone> Analyzer<'a, P> {
}
}
pub fn analyze(&self) -> Result<(), AnalyzerError<P>> {
pub fn analyze(&self) -> Result<(), AnalyzerError> {
for node in &self.abstract_tree.nodes {
self.analyze_node(node)?;
}
@ -68,7 +68,7 @@ impl<'a, P: Clone> Analyzer<'a, P> {
Ok(())
}
fn analyze_node(&self, node: &Node<P>) -> Result<(), AnalyzerError<P>> {
fn analyze_node(&self, node: &Node) -> Result<(), AnalyzerError> {
match &node.statement {
Statement::Add(left, right) => {
if let Some(Type::Integer) | Some(Type::Float) =
@ -166,11 +166,11 @@ impl<'a, P: Clone> Analyzer<'a, P> {
}
#[derive(Clone, Debug, PartialEq)]
pub enum AnalyzerError<P> {
ExpectedFunction { position: P },
ExpectedIdentifier { actual: Node<P> },
ExpectedIntegerOrFloat { actual: Node<P> },
UnexpectedIdentifier { identifier: Node<P> },
pub enum AnalyzerError {
ExpectedFunction { position: Span },
ExpectedIdentifier { actual: Node },
ExpectedIntegerOrFloat { actual: Node },
UnexpectedIdentifier { identifier: Node },
}
#[cfg(test)]

10
dust-lang/src/parse.rs
View File

@ -39,7 +39,7 @@ use crate::{
/// }),
/// );
/// ```
pub fn parse(input: &str) -> Result<AbstractSyntaxTree<Span>, ParseError> {
pub fn parse(input: &str) -> Result<AbstractSyntaxTree, ParseError> {
let lexer = Lexer::new(input);
let mut parser = Parser::new(lexer);
let mut nodes = VecDeque::new();
@ -80,7 +80,7 @@ pub fn parse(input: &str) -> Result<AbstractSyntaxTree<Span>, ParseError> {
///
/// assert_eq!(
/// nodes,
/// Into::<VecDeque<Node<Span>>>::into([
/// Into::<VecDeque<Node>>::into([
/// Node {
/// statement: Statement::Assign(
/// Box::new(Node {
@ -110,7 +110,7 @@ impl<'src> Parser<'src> {
Parser { lexer, current }
}
pub fn parse(&mut self) -> Result<Node<Span>, ParseError> {
pub fn parse(&mut self) -> Result<Node, ParseError> {
self.parse_node(0)
}
@ -124,7 +124,7 @@ impl<'src> Parser<'src> {
Ok(())
}
fn parse_node(&mut self, precedence: u8) -> Result<Node<Span>, ParseError> {
fn parse_node(&mut self, precedence: u8) -> Result<Node, ParseError> {
let left_node = self.parse_primary()?;
let left_start = left_node.position.0;
@ -181,7 +181,7 @@ impl<'src> Parser<'src> {
Ok(left_node)
}
fn parse_primary(&mut self) -> Result<Node<Span>, ParseError> {
fn parse_primary(&mut self) -> Result<Node, ParseError> {
match self.current.clone() {
(Token::Boolean(boolean), span) => {
self.next_token()?;

6
dust-lang/src/value.rs
View File

@ -12,7 +12,7 @@ use serde::{
Deserialize, Deserializer, Serialize,
};
use crate::{identifier::Identifier, AbstractSyntaxTree, Type, Vm, VmError};
use crate::{identifier::Identifier, AbstractSyntaxTree, Span, Type, Vm, VmError};
#[derive(Clone, Debug, PartialEq)]
pub struct Value(Arc<ValueInner>);
@ -551,7 +551,7 @@ pub struct Function {
pub name: Identifier,
pub type_parameters: Option<Vec<Type>>,
pub value_parameters: Option<Vec<(Identifier, Type)>>,
pub body: AbstractSyntaxTree<()>,
pub body: AbstractSyntaxTree,
}
impl Function {
@ -560,7 +560,7 @@ impl Function {
_type_arguments: Option<Vec<Type>>,
value_arguments: Option<Vec<Value>>,
variables: &HashMap<Identifier, Value>,
) -> Result<Option<Value>, VmError<()>> {
) -> Result<Option<Value>, VmError> {
let mut new_variables = variables.clone();
if let (Some(value_parameters), Some(value_arguments)) =

64
dust-lang/src/vm.rs
View File

@ -8,7 +8,7 @@ use crate::{
pub fn run(
input: &str,
variables: &mut HashMap<Identifier, Value>,
) -> Result<Option<Value>, VmError<Span>> {
) -> Result<Option<Value>, VmError> {
let abstract_syntax_tree = parse(input)?;
let analyzer = Analyzer::new(&abstract_syntax_tree, variables);
@ -19,19 +19,19 @@ pub fn run(
vm.run(variables)
}
pub struct Vm<P> {
abstract_tree: AbstractSyntaxTree<P>,
pub struct Vm {
abstract_tree: AbstractSyntaxTree,
}
impl<P: Copy> Vm<P> {
pub fn new(abstract_tree: AbstractSyntaxTree<P>) -> Self {
impl Vm {
pub fn new(abstract_tree: AbstractSyntaxTree) -> Self {
Self { abstract_tree }
}
pub fn run(
&mut self,
variables: &mut HashMap<Identifier, Value>,
) -> Result<Option<Value>, VmError<P>> {
) -> Result<Option<Value>, VmError> {
let mut previous_value = None;
while let Some(node) = self.abstract_tree.nodes.pop_front() {
@ -43,9 +43,9 @@ impl<P: Copy> Vm<P> {
fn run_node(
&self,
node: Node<P>,
node: Node,
variables: &mut HashMap<Identifier, Value>,
) -> Result<Option<Value>, VmError<P>> {
) -> Result<Option<Value>, VmError> {
match node.statement {
Statement::Add(left, right) => {
let left_span = left.position;
@ -158,13 +158,7 @@ impl<P: Copy> Vm<P> {
None
};
Ok(function
.clone()
.call(None, value_parameters, variables)
.map_err(|error| VmError::FunctionCallFailed {
error: Box::new(error),
position: function_position,
})?)
Ok(function.clone().call(None, value_parameters, variables)?)
}
Statement::Identifier(_) => Ok(None),
Statement::List(nodes) => {
@ -178,7 +172,7 @@ impl<P: Copy> Vm<P> {
Err(VmError::ExpectedValue { position: span })
}
})
.collect::<Result<Vec<Value>, VmError<P>>>()?;
.collect::<Result<Vec<Value>, VmError>>()?;
Ok(Some(Value::list(values)))
}
@ -244,54 +238,40 @@ impl<P: Copy> Vm<P> {
}
#[derive(Clone, Debug, PartialEq)]
pub enum VmError<P> {
AnaylyzerError(AnalyzerError<P>),
pub enum VmError {
AnaylyzerError(AnalyzerError),
ParseError(ParseError),
ValueError(ValueError),
// Anaylsis Failures
// These should be prevented by running the analyzer before the VM
BuiltInFunctionCallFailed(BuiltInFunctionError),
ExpectedIdentifier {
position: P,
},
ExpectedIdentifierOrInteger {
position: P,
},
ExpectedInteger {
position: P,
},
ExpectedList {
position: P,
},
ExpectedValue {
position: P,
},
FunctionCallFailed {
error: Box<VmError<()>>,
position: P,
},
ExpectedIdentifier { position: Span },
ExpectedIdentifierOrInteger { position: Span },
ExpectedInteger { position: Span },
ExpectedList { position: Span },
ExpectedValue { position: Span },
}
impl<P> From<BuiltInFunctionError> for VmError<P> {
impl From<BuiltInFunctionError> for VmError {
fn from(v: BuiltInFunctionError) -> Self {
Self::BuiltInFunctionCallFailed(v)
}
}
impl<P> From<AnalyzerError<P>> for VmError<P> {
fn from(error: AnalyzerError<P>) -> Self {
impl From<AnalyzerError> for VmError {
fn from(error: AnalyzerError) -> Self {
Self::AnaylyzerError(error)
}
}
impl<P> From<ParseError> for VmError<P> {
impl From<ParseError> for VmError {
fn from(error: ParseError) -> Self {
Self::ParseError(error)
}
}
impl<P> From<ValueError> for VmError<P> {
impl From<ValueError> for VmError {
fn from(error: ValueError) -> Self {
Self::ValueError(error)
}