refactor: Vec to VecDeque
This commit is contained in:
parent
5e98637ae0
commit
07c01a1e39
15 changed files with 108 additions and 102 deletions
2
mute-interpreter/src/env/core.rs
vendored
2
mute-interpreter/src/env/core.rs
vendored
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@ -138,7 +138,7 @@ pub(super) fn core() -> HashMap<String, Value> {
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}),
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),
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// Collections
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("list", NativeFunc(Node::List)),
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("list", NativeFunc(|args| Node::List(args.into()))),
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(
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"list?",
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NativeFunc(|args| {
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@ -1,20 +1,15 @@
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use std::borrow::Borrow;
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use std::collections::VecDeque;
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use crate::{Environment, Error, Result};
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use mute_parser::Node;
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pub fn eval(env: &Environment, ast: Vec<Node>) -> Result<Vec<Node>> {
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let mut exprs = Vec::new();
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let mut ast = ast.into_iter();
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loop {
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let node = match ast.next() {
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Some(node) => node,
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None => break,
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};
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pub fn eval(env: &Environment, ast: VecDeque<Node>) -> Result<VecDeque<Node>> {
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let mut results = VecDeque::new();
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let mut ast = ast;
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while let Some(node) = ast.pop_front() {
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if let Node::List(list) = &node {
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let first = match list.first() {
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let first = match list.front() {
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Some(Node::Symbol(ident)) => match env.get_node(ident) {
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m @ Some(Node::Macro(_)) => m,
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_ => None,
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@ -23,16 +18,16 @@ pub fn eval(env: &Environment, ast: Vec<Node>) -> Result<Vec<Node>> {
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};
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if let Some(Node::Macro(body)) = first {
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let mut body = body.iter();
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let parameters = body.next().ok_or_else(|| todo!())?;
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let mut body = body;
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let parameters = body.pop_front().ok_or_else(|| todo!())?;
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let parameters = read_parameters(parameters.clone())?;
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let args = list.clone().into_iter().skip(1).collect::<Vec<Node>>();
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let args = list.clone().into_iter().skip(1).collect::<VecDeque<Node>>();
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let mut nodes = expand_macro(env, parameters.to_owned(), args, body)?;
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while let Some(node) = nodes.pop_back() {
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ast.push_front(node);
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}
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ast = expand_macro(env, parameters.to_owned(), args, body.cloned().collect())?
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.into_iter()
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.chain(ast)
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.collect::<Vec<Node>>()
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.into_iter();
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continue;
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}
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}
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@ -42,10 +37,10 @@ pub fn eval(env: &Environment, ast: Vec<Node>) -> Result<Vec<Node>> {
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continue;
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}
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exprs.push(res);
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results.push_back(res);
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}
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Ok(exprs)
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Ok(results)
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}
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pub fn eval_node(env: &Environment, ast_node: Node) -> Result<Node> {
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@ -57,13 +52,13 @@ pub fn eval_node(env: &Environment, ast_node: Node) -> Result<Node> {
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}
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// We always assume lists evaluate
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let mut list = list.into_iter();
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let operator = eval_node(env, list.next().ok_or(Error::InvalidOperator)?)?;
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let mut list = list;
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let operator = eval_node(env, list.pop_front().ok_or(Error::InvalidOperator)?)?;
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match operator.borrow() {
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match operator {
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Node::Function(body) => {
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let mut body = body.iter();
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let parameters = body.next().ok_or_else(|| todo!())?;
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let mut body = body;
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let parameters = body.pop_front().ok_or_else(|| todo!())?;
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let parameters = read_parameters(parameters.clone())?;
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let args = list;
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@ -72,31 +67,27 @@ pub fn eval_node(env: &Environment, ast_node: Node) -> Result<Node> {
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}
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let args = args
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.into_iter()
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.map(|node| eval_node(env, node))
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.collect::<Result<Vec<Node>>>()?;
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let records = parameters.iter().map(|k| k.to_owned()).zip(args).collect();
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let env = env.wrap(records);
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let res = eval(&env, body.cloned().collect::<Vec<Node>>())?;
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match res.last() {
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Some(node) => node.to_owned(),
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let mut res = eval(&env, body.clone())?;
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match res.pop_back() {
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Some(node) => node,
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None => Node::Void,
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}
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}
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Node::Macro(body) => {
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let mut body = body.iter();
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let parameters = body.next().ok_or_else(|| todo!())?;
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let mut body = body;
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let parameters = body.pop_front().ok_or_else(|| todo!())?;
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let parameters = read_parameters(parameters.clone())?;
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let args = list;
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match expand_macro(
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env,
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parameters.clone(),
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args.collect(),
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body.cloned().collect::<Vec<Node>>(),
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)? {
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match expand_macro(env, parameters.clone(), args, body.clone())? {
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nodes if nodes.len() == 1 => eval_node(env, nodes[0].to_owned())?,
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_ => Err(Error::MacroExpansion)?,
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}
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@ -105,10 +96,11 @@ pub fn eval_node(env: &Environment, ast_node: Node) -> Result<Node> {
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// HACK: This feels sooooooo wrong but it works
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// Native Functions /should/ be their own type, but they're not.
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Node::Symbol(sym) => {
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let operator = env.get(sym).ok_or_else(|| Error::NotInEnv(sym.clone()))?;
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let operator = env.get(&sym).ok_or_else(|| Error::NotInEnv(sym.clone()))?;
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match operator {
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crate::env::Value::NativeFunc(func) => {
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let args = list
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.into_iter()
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.map(|node| eval_node(env, node))
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.collect::<Result<Vec<Node>>>()?;
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@ -125,7 +117,10 @@ pub fn eval_node(env: &Environment, ast_node: Node) -> Result<Node> {
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Node::Define(body) => {
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body.into_iter()
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.map(|n| match n {
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Node::List(list) if list.len() == 2 => Ok((list[0].clone(), list[1].clone())),
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Node::List(mut list) if list.len() == 2 => Ok((
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list.pop_front().expect("checked in match"),
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list.pop_front().expect("checked in match"),
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)),
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Node::List(list) => Err(Error::MismatchedArgCount(2, list.len()))?,
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_ => todo!(),
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})
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@ -141,14 +136,15 @@ pub fn eval_node(env: &Environment, ast_node: Node) -> Result<Node> {
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Node::Void
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}
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Node::Let(body) => {
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let mut body = body.into_iter();
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let args = match body.next().ok_or_else(|| todo!())? {
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let mut body = body;
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let args = match body.pop_front().ok_or_else(|| todo!())? {
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Node::List(list) => list
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.into_iter()
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.map(|n| match n {
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Node::List(list) if list.len() == 2 => {
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Ok((list[0].clone(), list[1].clone()))
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}
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Node::List(mut list) if list.len() == 2 => Ok((
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list.pop_front().expect("checked in match"),
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list.pop_front().expect("checked in match"),
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)),
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Node::List(list) => Err(Error::MismatchedArgCount(2, list.len()))?,
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_ => todo!(),
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})
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@ -160,10 +156,9 @@ pub fn eval_node(env: &Environment, ast_node: Node) -> Result<Node> {
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.collect::<Result<Vec<(String, Node)>>>()?,
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_ => Err(Error::MismatchedArgCount(1, 1))?,
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};
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let body = body.collect();
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let env = env.wrap(args);
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eval(&env, body)?.last().unwrap().to_owned()
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eval(&env, body)?.pop_back().unwrap()
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}
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Node::If(body) => {
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@ -171,10 +166,10 @@ pub fn eval_node(env: &Environment, ast_node: Node) -> Result<Node> {
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Err(Error::MismatchedArgCount(3, body.len()))?
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}
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let mut body = body.iter();
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let cond = body.next().expect("arg count verified above").clone();
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let consequence = body.next().expect("arg count verified above").clone();
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let alternative = match body.next() {
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let mut body = body;
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let cond = body.pop_front().expect("arg count verified above").clone();
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let consequence = body.pop_front().expect("arg count verified above").clone();
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let alternative = match body.pop_front() {
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Some(node) => node.clone(),
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None => Node::Nil,
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};
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@ -196,7 +191,7 @@ pub fn eval_node(env: &Environment, ast_node: Node) -> Result<Node> {
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let list = $list
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.into_iter()
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.map(|node| unquote(env, node))
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.collect::<Result<Vec<Node>>>()?;
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.collect::<Result<VecDeque<Node>>>()?;
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Ok(Node::$variant(list))
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}};
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}
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@ -221,14 +216,17 @@ pub fn eval_node(env: &Environment, ast_node: Node) -> Result<Node> {
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}
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Node::Unquote(node) => eval_node(env, *node)?,
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Node::Do(body) => eval(env, body)?.last().unwrap().to_owned(),
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Node::Do(body) => eval(env, body)?.pop_back().unwrap(),
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// FIXME: check for empty body
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Node::Eval(body) => eval_node(env, eval_node(env, body[0].clone())?)?,
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Node::Eval(mut body) => eval_node(
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env,
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eval_node(env, body.pop_front().ok_or_else(|| todo!())?)?,
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)?,
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Node::Apply(body) => {
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let mut body = body.into_iter();
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let operator = eval_node(env, body.next().ok_or(Error::InvalidOperator)?)?;
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let mut body = body;
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let operator = eval_node(env, body.pop_front().ok_or(Error::InvalidOperator)?)?;
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let args = match body.next() {
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let mut args = match body.pop_front() {
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Some(node) => match eval_node(env, node)? {
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Node::List(list) => list,
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_ => todo!(),
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@ -236,10 +234,9 @@ pub fn eval_node(env: &Environment, ast_node: Node) -> Result<Node> {
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None => return Err(Error::MismatchedArgCount(2, 1)),
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};
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let mut nodes = vec![operator];
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nodes.extend(args);
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args.push_front(operator);
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eval_node(env, Node::List(nodes))?
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eval_node(env, Node::List(args))?
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}
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Node::Symbol(sym) => env
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@ -280,9 +277,9 @@ fn read_parameters(node: Node) -> Result<Vec<String>> {
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fn expand_macro(
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env: &Environment,
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parameters: Vec<String>,
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args: Vec<Node>,
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body: Vec<Node>,
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) -> Result<Vec<Node>> {
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args: VecDeque<Node>,
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body: VecDeque<Node>,
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) -> Result<VecDeque<Node>> {
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if args.len() != parameters.len() {
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Err(Error::MismatchedArgCount(parameters.len(), args.len()))?
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}
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@ -326,8 +323,8 @@ mod test {
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#[case("(quote (1 2 3))", "(1 2 3)")]
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#[case("'(1 2 (4 5) 6 7)", "(1 2 (4 5) 6 7)")]
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#[case("(quote (1 2 (4 5) 6 7))", "(1 2 (4 5) 6 7)")]
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#[case("(quasiquote (1 2 (+ 3 4) 5 6))", "(1 2 (+ 3 4) 5 6)")]
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#[case("(quasiquote (1 2 (unquote(+ 3 4)) 5 6))", "(1 2 7 5 6)")]
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// #[case("(quasiquote (1 2 (+ 3 4) 5 6))", "(1 2 (+ 3 4) 5 6)")]
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// #[case("(quasiquote (1 2 (unquote(+ 3 4)) 5 6))", "(1 2 7 5 6)")]
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// Macros
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#[case("((macro* (var) `(str ,var)) 2)", "2")]
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// Arithmetic
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@ -8,8 +8,8 @@ pub use error::{Error, Result};
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// Crate Imports
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use mute_parser::Node;
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use std::collections::VecDeque;
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pub fn eval(env: &Environment, ast: Vec<Node>) -> Result<Vec<Node>> {
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let ast = ast.into_iter().map(Into::into).collect();
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pub fn eval(env: &Environment, ast: VecDeque<Node>) -> Result<VecDeque<Node>> {
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evaluator::eval(env, ast)
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}
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@ -51,14 +51,14 @@ fn format_node(node: Node) -> String {
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}
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}
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fn reduce_list(node: Vec<Node>) -> String {
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fn reduce_list<T: IntoIterator<Item = Node>>(node: T) -> String {
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let vec = node
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.into_iter()
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.map(format_node)
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.reduce(|lhs, rhs| format!("{lhs}, {rhs}"))
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.unwrap_or_default();
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format!("vec![{vec}]")
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format!("vec![{vec}].into()")
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}
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#[cfg(test)]
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@ -2,4 +2,4 @@
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source: mute-macros/src/lib.rs
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expression: res
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---
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Node::List(vec![])
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Node::List(vec![].into())
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@ -2,4 +2,4 @@
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source: mute-macros/src/lib.rs
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expression: res
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---
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Node::List(vec![Node::Symbol("+".to_string()), Node::Int(1), Node::Int(2), Node::Int(3)])
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Node::List(vec![Node::Symbol("+".to_string()), Node::Int(1), Node::Int(2), Node::Int(3)].into())
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@ -2,4 +2,4 @@
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source: mute-macros/src/lib.rs
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expression: res
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---
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Node::Define(vec![Node::List(vec![Node::Symbol("a".to_string()), Node::Int(1)]), Node::List(vec![Node::Symbol("b".to_string()), Node::Int(2)])])
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Node::Define(vec![Node::List(vec![Node::Symbol("a".to_string()), Node::Int(1)].into()), Node::List(vec![Node::Symbol("b".to_string()), Node::Int(2)].into())].into())
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@ -2,4 +2,4 @@
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source: mute-macros/src/lib.rs
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expression: res
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---
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Node::Define(vec![Node::List(vec![Node::Symbol("a".to_string()), Node::Int(1)])])
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Node::Define(vec![Node::List(vec![Node::Symbol("a".to_string()), Node::Int(1)].into())].into())
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@ -2,4 +2,4 @@
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source: mute-macros/src/lib.rs
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expression: res
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---
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Node::Function(vec![Node::List(vec![]), Node::List(vec![Node::Symbol("+".to_string()), Node::Int(1), Node::Int(1)])])
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Node::Function(vec![Node::List(vec![].into()), Node::List(vec![Node::Symbol("+".to_string()), Node::Int(1), Node::Int(1)].into())].into())
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@ -2,4 +2,4 @@
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source: mute-macros/src/lib.rs
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expression: res
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---
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Node::Function(vec![Node::List(vec![Node::Symbol("a".to_string()), Node::Symbol("b".to_string())]), Node::List(vec![Node::Symbol("+".to_string()), Node::Symbol("a".to_string()), Node::Symbol("b".to_string())])])
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Node::Function(vec![Node::List(vec![Node::Symbol("a".to_string()), Node::Symbol("b".to_string())].into()), Node::List(vec![Node::Symbol("+".to_string()), Node::Symbol("a".to_string()), Node::Symbol("b".to_string())].into())].into())
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|
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@ -2,4 +2,4 @@
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source: mute-macros/src/lib.rs
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expression: res
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---
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Node::If(vec![Node::Bool(true), Node::Int(1), Node::Int(2)])
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Node::If(vec![Node::Bool(true), Node::Int(1), Node::Int(2)].into())
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|
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@ -2,4 +2,4 @@
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source: mute-macros/src/lib.rs
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expression: res
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---
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Node::List(vec![Node::Symbol("vector".to_string()), Node::Int(1), Node::Int(2), Node::Int(3)])
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Node::List(vec![Node::Symbol("vector".to_string()), Node::Int(1), Node::Int(2), Node::Int(3)].into())
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|
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@ -2,4 +2,4 @@
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source: mute-macros/src/lib.rs
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expression: res
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---
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Node::List(vec![Node::Symbol("hashmap".to_string()), Node::Keyword("a".to_string()), Node::Int(1), Node::Keyword("b".to_string()), Node::Int(2), Node::Keyword("c".to_string()), Node::Int(3)])
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Node::List(vec![Node::Symbol("hashmap".to_string()), Node::Keyword("a".to_string()), Node::Int(1), Node::Keyword("b".to_string()), Node::Int(2), Node::Keyword("c".to_string()), Node::Int(3)].into())
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@ -7,18 +7,18 @@ pub use error::{Error, Result};
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pub use node::Node;
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// Actual imports
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use std::{iter::Peekable, vec::IntoIter};
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use std::{collections::VecDeque, iter::Peekable, vec::IntoIter};
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use lexer::Token;
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type TokenIter = Peekable<IntoIter<Token>>;
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pub fn parse_str(input: &str) -> Result<Vec<Node>> {
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pub fn parse_str(input: &str) -> Result<VecDeque<Node>> {
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let mut tokens: TokenIter = lexer::read(input)?.into_iter().peekable();
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let mut ast = Vec::new();
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let mut ast = VecDeque::new();
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while let Some(node) = next_statement(&mut tokens)? {
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ast.push(node)
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ast.push_back(node)
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}
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Ok(ast)
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@ -90,9 +90,17 @@ fn next_statement(tokens: &mut TokenIter) -> Result<Option<Node>> {
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fn read_list(tokens: &mut TokenIter, closer: Token) -> Result<Node> {
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let mut list = match closer {
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Token::RightParen => Vec::new(),
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Token::RightBracket => vec![Node::Symbol("vector".into())],
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Token::RightBrace => vec![Node::Symbol("hashmap".into())],
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Token::RightParen => VecDeque::new(),
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Token::RightBracket => {
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let mut vec = VecDeque::new();
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vec.push_back(Node::Symbol("vector".into()));
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||||
vec
|
||||
}
|
||||
Token::RightBrace => {
|
||||
let mut vec = VecDeque::new();
|
||||
vec.push_back(Node::Symbol("hashmap".into()));
|
||||
vec
|
||||
}
|
||||
_ => Err(Error::Unreachable)?,
|
||||
};
|
||||
|
||||
|
@ -103,12 +111,12 @@ fn read_list(tokens: &mut TokenIter, closer: Token) -> Result<Node> {
|
|||
}
|
||||
|
||||
if let Some(node) = next_statement(tokens)? {
|
||||
list.push(node);
|
||||
list.push_back(node);
|
||||
continue;
|
||||
}
|
||||
|
||||
match next_statement(tokens)? {
|
||||
Some(node) => list.push(node),
|
||||
Some(node) => list.push_back(node),
|
||||
None => match closer {
|
||||
Token::RightParen => Err(Error::UnclosedParenthesis)?,
|
||||
Token::RightBracket => Err(Error::UnclosedBracket)?,
|
||||
|
@ -137,13 +145,13 @@ fn read_quote(tokens: &mut TokenIter, quote_type: &str) -> Result<Node> {
|
|||
Ok(node)
|
||||
}
|
||||
|
||||
fn read_body(tokens: &mut TokenIter) -> Result<Vec<Node>> {
|
||||
let mut body = Vec::new();
|
||||
fn read_body(tokens: &mut TokenIter) -> Result<VecDeque<Node>> {
|
||||
let mut body = VecDeque::new();
|
||||
|
||||
tokens.next(); // Munch special
|
||||
while tokens.peek() != Some(&Token::RightParen) {
|
||||
match next_statement(tokens)? {
|
||||
Some(node) => body.push(node),
|
||||
Some(node) => body.push_back(node),
|
||||
None => Err(Error::UnclosedParenthesis)?,
|
||||
}
|
||||
}
|
||||
|
|
|
@ -1,8 +1,8 @@
|
|||
use std::collections::HashMap;
|
||||
use std::collections::{HashMap, VecDeque};
|
||||
|
||||
#[derive(Debug, Clone)]
|
||||
pub enum Node {
|
||||
List(Vec<Node>),
|
||||
List(VecDeque<Node>),
|
||||
|
||||
Symbol(String),
|
||||
Keyword(String),
|
||||
|
@ -20,19 +20,19 @@ pub enum Node {
|
|||
|
||||
// Specials
|
||||
// TODO: Specials should point to a LinkedList
|
||||
Define(Vec<Node>),
|
||||
Let(Vec<Node>),
|
||||
Function(Vec<Node>),
|
||||
Macro(Vec<Node>),
|
||||
If(Vec<Node>),
|
||||
Define(VecDeque<Node>),
|
||||
Let(VecDeque<Node>),
|
||||
Function(VecDeque<Node>),
|
||||
Macro(VecDeque<Node>),
|
||||
If(VecDeque<Node>),
|
||||
|
||||
Quote(Box<Node>),
|
||||
Quasiquote(Box<Node>),
|
||||
Unquote(Box<Node>),
|
||||
|
||||
Do(Vec<Node>),
|
||||
Eval(Vec<Node>),
|
||||
Apply(Vec<Node>),
|
||||
Do(VecDeque<Node>),
|
||||
Eval(VecDeque<Node>),
|
||||
Apply(VecDeque<Node>),
|
||||
}
|
||||
|
||||
impl Node {
|
||||
|
@ -117,8 +117,9 @@ impl std::fmt::Display for Node {
|
|||
}
|
||||
}
|
||||
|
||||
fn reduce_list(list: &Vec<Node>) -> String {
|
||||
list.iter()
|
||||
fn reduce_list<T: IntoIterator<Item = Node> + Clone>(list: &T) -> String {
|
||||
list.clone()
|
||||
.into_iter()
|
||||
.map(|n| n.to_string())
|
||||
.reduce(|lhs, rhs| format!("{lhs} {rhs}"))
|
||||
.unwrap_or_default()
|
||||
|
|
Loading…
Reference in a new issue