forked from AbleScript/ablescript
Satisfied most of THE ALLMIGHTY CLIPPY's requests.
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@ -50,19 +50,21 @@ pub enum AssignableKind {
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Index { indices: Vec<Expr> },
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}
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pub struct InvalidAssignable;
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impl Assignable {
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pub fn from_expr(expr: Expr) -> Result<Assignable, ()> {
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pub fn from_expr(expr: Expr) -> Result<Assignable, InvalidAssignable> {
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match expr.kind {
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ExprKind::Variable(ident) => Ok(Assignable {
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ident: Ident::new(ident, expr.span),
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kind: AssignableKind::Variable,
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}),
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ExprKind::Index { expr, index } => Self::from_index(*expr, *index),
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_ => Err(()),
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_ => Err(InvalidAssignable),
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}
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}
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fn from_index(mut buf: Expr, index: Expr) -> Result<Assignable, ()> {
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fn from_index(mut buf: Expr, index: Expr) -> Result<Assignable, InvalidAssignable> {
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let mut indices = vec![index];
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let ident = loop {
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match buf.kind {
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@ -71,7 +73,7 @@ impl Assignable {
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indices.push(*index);
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buf = *expr;
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}
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_ => return Err(()),
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_ => return Err(InvalidAssignable),
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}
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};
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@ -50,6 +50,15 @@ struct Scope {
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variables: HashMap<String, Variable>,
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}
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impl Default for ExecEnv {
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fn default() -> Self {
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Self {
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stack: vec![Default::default()],
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read_buf: Default::default(),
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}
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}
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}
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impl Default for Scope {
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fn default() -> Self {
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Self {
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@ -80,11 +89,7 @@ impl ExecEnv {
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/// Create a new Scope with no predefined variable definitions or
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/// other information.
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pub fn new() -> Self {
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Self {
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// We always need at least one stackframe.
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stack: vec![Default::default()],
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read_buf: Default::default(),
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}
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Self::default()
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}
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/// Create a new Scope with predefined variables
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@ -190,7 +195,7 @@ impl ExecEnv {
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.map(|x| x.borrow().clone())
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.unwrap_or(Value::Nul)
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}
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Len(expr) => Value::Int(self.eval_expr(expr)?.len()),
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Len(expr) => Value::Int(self.eval_expr(expr)?.length()),
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// TODO: not too happy with constructing an artificial
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// Ident here.
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@ -476,7 +481,7 @@ impl ExecEnv {
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.chain(
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args[2 * n_alternations..]
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.iter()
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.map(|r| Rc::clone(r))
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.map(Rc::clone)
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.take(extra_l),
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)
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.collect(),
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@ -486,7 +491,7 @@ impl ExecEnv {
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.chain(
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args[2 * n_alternations..]
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.iter()
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.map(|r| Rc::clone(r))
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.map(Rc::clone)
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.take(extra_r),
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)
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.collect(),
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@ -1,7 +1,5 @@
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use logos::{Lexer, Logos};
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use crate::variables::Abool;
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#[derive(Logos, Debug, PartialEq, Clone)]
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pub enum Token {
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// Symbols
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@ -121,8 +119,8 @@ pub enum Token {
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#[regex(r"-?[0-9]+", get_value)]
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Integer(isize),
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/// A C-complaint identifier
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#[regex(r"[a-zA-Z_][a-zA-Z_0-9]*", get_ident)]
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/// An identifier
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#[regex(r"\p{XID_Start}\p{XID_Continue}*", get_ident)]
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Identifier(String),
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#[regex(r"owo .*")]
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@ -104,7 +104,7 @@ impl std::fmt::Debug for BuiltinFunctio {
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impl PartialEq for BuiltinFunctio {
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fn eq(&self, other: &Self) -> bool {
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Rc::ptr_eq(&self.function, &other.function) && self.arity == other.arity
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self.fn_addr() == other.fn_addr() && self.arity == other.arity
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}
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}
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@ -264,7 +264,7 @@ impl Value {
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.into_abool(),
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Functio::Able { params, body } => {
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let str_to_isize = |x: String| -> isize {
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x.as_bytes().into_iter().map(|x| *x as isize).sum()
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x.as_bytes().iter().map(|x| *x as isize).sum()
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};
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let params: isize = params.into_iter().map(str_to_isize).sum();
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@ -482,8 +482,8 @@ impl Value {
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}
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}
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/// Get a lenght of a value
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pub fn len(&self) -> isize {
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/// Get a length of a value
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pub fn length(&self) -> isize {
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match self {
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Value::Nul => 0,
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Value::Str(s) => s.len() as _,
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@ -547,7 +547,7 @@ impl ops::Add for Value {
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Value::Functio(_) => Value::Functio(self.into_functio()) + rhs,
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Value::Cart(_) => Value::Cart(self.into_cart()) + rhs,
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},
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Value::Str(s) => Value::Str(format!("{}{}", s, rhs.to_string())),
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Value::Str(s) => Value::Str(format!("{s}{rhs}")),
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Value::Int(i) => Value::Int(i.wrapping_add(rhs.into_isize())),
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Value::Bool(b) => Value::Bool(b || rhs.into_bool()),
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Value::Abool(_) => {
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@ -18,7 +18,7 @@ pub fn repl(ast_print: bool) {
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rl.add_history_entry(readline);
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let partial_data = match partial {
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Some(line) => line + &readline,
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Some(line) => line + readline,
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None => readline.to_owned(),
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};
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