forked from AbleScript/ablescript
Removed ident type, fixed tests
This commit is contained in:
ondra05
parent
db7fc4d592
commit
38fe23d2b5
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@ -50,62 +50,38 @@ impl<T: Hash> Hash for Spanned<T> {
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}
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}
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#[derive(Debug, Clone)]
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pub struct Ident {
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pub ident: String,
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pub span: Span,
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}
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impl Ident {
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pub fn new(ident: String, span: Span) -> Self {
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Self { ident, span }
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}
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}
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impl PartialEq for Ident {
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fn eq(&self, other: &Self) -> bool {
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self.ident == other.ident
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}
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}
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impl Hash for Ident {
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fn hash<H: std::hash::Hasher>(&self, state: &mut H) {
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self.ident.hash(state)
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}
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}
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#[derive(Debug, PartialEq, Clone, Hash)]
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pub struct Assignable {
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pub ident: Ident,
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pub ident: Spanned<String>,
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pub kind: AssignableKind,
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}
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#[derive(Debug, PartialEq, Clone, Hash)]
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pub enum AssignableKind {
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Variable,
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Index { indices: Vec<Spanned<ExprKind>> },
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Index { indices: Vec<Spanned<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: Spanned<ExprKind>) -> Result<Assignable, InvalidAssignable> {
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pub fn from_expr(expr: Spanned<Expr>) -> Result<Assignable, InvalidAssignable> {
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match expr.item {
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ExprKind::Variable(ident) => Ok(Assignable {
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ident: Ident::new(ident, expr.span),
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Expr::Variable(ident) => Ok(Assignable {
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ident: Spanned::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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Expr::Index { expr, index } => Self::from_index(*expr, *index),
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_ => Err(InvalidAssignable),
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}
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}
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fn from_index(mut buf: Spanned<ExprKind>, index: Spanned<ExprKind>) -> Result<Assignable, InvalidAssignable> {
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fn from_index(mut buf: Spanned<Expr>, index: Spanned<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.item {
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ExprKind::Variable(ident) => break ident,
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ExprKind::Index { expr, index } => {
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Expr::Variable(ident) => break ident,
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Expr::Index { expr, index } => {
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indices.push(*index);
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buf = *expr;
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}
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@ -115,23 +91,20 @@ impl Assignable {
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indices.reverse();
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Ok(Assignable {
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ident: Ident::new(ident, buf.span),
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ident: Spanned::new(ident, buf.span),
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kind: AssignableKind::Index { indices },
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})
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}
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}
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#[derive(Debug, PartialEq, Clone, Hash)]
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pub struct Block {
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pub block: Vec<Spanned<StmtKind>>,
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}
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pub type Block = Vec<Spanned<Stmt>>;
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/// A syntactic unit expressing an effect.
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#[derive(Debug, PartialEq, Clone, Hash)]
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pub enum StmtKind {
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pub enum Stmt {
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// Control flow
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If {
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cond: Spanned<ExprKind>,
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cond: Spanned<Expr>,
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body: Block,
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},
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Loop {
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@ -141,31 +114,31 @@ pub enum StmtKind {
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HopBack,
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Var {
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ident: Ident,
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init: Option<Spanned<ExprKind>>,
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ident: Spanned<String>,
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init: Option<Spanned<Expr>>,
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},
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Assign {
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assignable: Assignable,
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value: Spanned<ExprKind>,
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value: Spanned<Expr>,
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},
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Functio {
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ident: Ident,
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params: Vec<Ident>,
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ident: Spanned<String>,
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params: Vec<Spanned<String>>,
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body: Block,
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},
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BfFunctio {
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ident: Ident,
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tape_len: Option<Spanned<ExprKind>>,
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ident: Spanned<String>,
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tape_len: Option<Spanned<Expr>>,
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code: Vec<u8>,
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},
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Call {
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expr: Spanned<ExprKind>,
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args: Vec<Spanned<ExprKind>>,
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expr: Spanned<Expr>,
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args: Vec<Spanned<Expr>>,
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},
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Print(Spanned<ExprKind>),
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Print(Spanned<Expr>),
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Read(Assignable),
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Melo(Ident),
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Melo(Spanned<String>),
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Rlyeh,
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Rickroll,
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}
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@ -173,20 +146,20 @@ pub enum StmtKind {
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/// Expression is parse unit which do not cause any effect,
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/// like math and logical operations or values.
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#[derive(Debug, PartialEq, Clone, Hash)]
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pub enum ExprKind {
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pub enum Expr {
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BinOp {
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lhs: Box<Spanned<ExprKind>>,
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rhs: Box<Spanned<ExprKind>>,
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lhs: Box<Spanned<Expr>>,
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rhs: Box<Spanned<Expr>>,
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kind: BinOpKind,
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},
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Not(Box<Spanned<ExprKind>>),
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Not(Box<Spanned<Expr>>),
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Literal(Value),
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Cart(Vec<(Spanned<ExprKind>, Spanned<ExprKind>)>),
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Cart(Vec<(Spanned<Expr>, Spanned<Expr>)>),
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Index {
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expr: Box<Spanned<ExprKind>>,
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index: Box<Spanned<ExprKind>>,
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expr: Box<Spanned<Expr>>,
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index: Box<Spanned<Expr>>,
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},
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Len(Box<Spanned<ExprKind>>),
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Len(Box<Spanned<Expr>>),
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Variable(String),
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}
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@ -19,7 +19,7 @@ use std::{
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use rand::random;
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use crate::{
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ast::{Assignable, AssignableKind, ExprKind, Ident, Spanned, StmtKind},
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ast::{Assignable, AssignableKind, Expr, Spanned, Stmt},
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base_55,
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consts::ablescript_consts,
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error::{Error, ErrorKind},
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@ -108,7 +108,7 @@ impl ExecEnv {
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/// Execute a set of Statements in the root stack frame. Return an
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/// error if one or more of the Stmts failed to evaluate, or if a
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/// `break` or `hopback` statement occurred at the top level.
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pub fn eval_stmts(&mut self, stmts: &[Spanned<StmtKind>]) -> Result<(), Error> {
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pub fn eval_stmts(&mut self, stmts: &[Spanned<Stmt>]) -> Result<(), Error> {
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match self.eval_stmts_hs(stmts, false)? {
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HaltStatus::Finished => Ok(()),
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HaltStatus::Break(span) | HaltStatus::Hopback(span) => Err(Error {
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@ -128,7 +128,7 @@ impl ExecEnv {
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/// function over `eval_stmts`.
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fn eval_stmts_hs(
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&mut self,
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stmts: &[Spanned<StmtKind>],
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stmts: &[Spanned<Stmt>],
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stackframe: bool,
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) -> Result<HaltStatus, Error> {
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let init_depth = self.stack.len();
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@ -155,9 +155,9 @@ impl ExecEnv {
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}
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/// Evaluate an Expr, returning its value or an error.
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fn eval_expr(&self, expr: &Spanned<ExprKind>) -> Result<Value, Error> {
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fn eval_expr(&self, expr: &Spanned<Expr>) -> Result<Value, Error> {
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use crate::ast::BinOpKind::*;
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use crate::ast::ExprKind::*;
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use crate::ast::Expr::*;
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Ok(match &expr.item {
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BinOp { lhs, rhs, kind } => {
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@ -176,7 +176,7 @@ impl ExecEnv {
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}
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Not(expr) => !self.eval_expr(expr)?,
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Literal(value) => value.clone(),
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ExprKind::Cart(members) => Value::Cart(
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Expr::Cart(members) => Value::Cart(
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members
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.iter()
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.map(|(value, key)| {
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@ -200,47 +200,44 @@ impl ExecEnv {
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// TODO: not too happy with constructing an artificial
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// Ident here.
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Variable(name) => self.get_var(&Ident {
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ident: name.to_owned(),
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span: expr.span.clone(),
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})?,
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Variable(name) => self.get_var(&Spanned::new(name.to_owned(), expr.span.clone()))?,
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})
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}
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/// Perform the action indicated by a statement.
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fn eval_stmt(&mut self, stmt: &Spanned<StmtKind>) -> Result<HaltStatus, Error> {
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fn eval_stmt(&mut self, stmt: &Spanned<Stmt>) -> Result<HaltStatus, Error> {
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match &stmt.item {
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StmtKind::Print(expr) => {
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Stmt::Print(expr) => {
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println!("{}", self.eval_expr(expr)?);
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}
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StmtKind::Var { ident, init } => {
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Stmt::Var { ident, init } => {
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let init = match init {
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Some(e) => self.eval_expr(e)?,
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None => Value::Nul,
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};
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self.decl_var(&ident.ident, init);
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self.decl_var(&ident.item, init);
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}
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StmtKind::Functio {
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Stmt::Functio {
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ident,
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params,
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body,
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} => {
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self.decl_var(
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&ident.ident,
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&ident.item,
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Value::Functio(Functio::Able {
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params: params.iter().map(|ident| ident.ident.to_owned()).collect(),
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body: body.block.to_owned(),
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params: params.iter().map(|ident| ident.item.to_owned()).collect(),
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body: body.to_owned(),
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}),
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);
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}
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StmtKind::BfFunctio {
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Stmt::BfFunctio {
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ident,
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tape_len,
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code,
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} => {
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self.decl_var(
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&ident.ident,
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&ident.item,
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Value::Functio(Functio::Bf {
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instructions: code.to_owned(),
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tape_len: tape_len
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@ -252,47 +249,47 @@ impl ExecEnv {
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}),
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);
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}
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StmtKind::If { cond, body } => {
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Stmt::If { cond, body } => {
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if self.eval_expr(cond)?.into_abool().to_bool() {
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return self.eval_stmts_hs(&body.block, true);
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return self.eval_stmts_hs(body, true);
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}
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}
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StmtKind::Call { expr, args } => {
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Stmt::Call { expr, args } => {
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let func = self.eval_expr(expr)?.into_functio();
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self.fn_call(func, args, &stmt.span)?;
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}
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StmtKind::Loop { body } => loop {
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let res = self.eval_stmts_hs(&body.block, true)?;
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Stmt::Loop { body } => loop {
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let res = self.eval_stmts_hs(body, true)?;
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match res {
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HaltStatus::Finished => {}
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HaltStatus::Break(_) => break,
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HaltStatus::Hopback(_) => continue,
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}
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},
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StmtKind::Assign { assignable, value } => {
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Stmt::Assign { assignable, value } => {
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self.assign(assignable, self.eval_expr(value)?)?;
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}
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StmtKind::Break => {
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Stmt::Break => {
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return Ok(HaltStatus::Break(stmt.span.clone()));
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}
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StmtKind::HopBack => {
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Stmt::HopBack => {
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return Ok(HaltStatus::Hopback(stmt.span.clone()));
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}
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StmtKind::Melo(ident) => {
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Stmt::Melo(ident) => {
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self.get_var_mut(ident)?.melo = true;
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}
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StmtKind::Rlyeh => {
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Stmt::Rlyeh => {
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// Maybe print a creepy error message or something
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// here at some point. ~~Alex
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exit(random());
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}
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StmtKind::Rickroll => {
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Stmt::Rickroll => {
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stdout()
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.write_all(include_str!("rickroll").as_bytes())
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.expect("Failed to write to stdout");
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}
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StmtKind::Read(assignable) => {
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Stmt::Read(assignable) => {
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let mut value = 0;
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for _ in 0..READ_BITS {
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value <<= 1;
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@ -360,7 +357,7 @@ impl ExecEnv {
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fn fn_call(
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&mut self,
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func: Functio,
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args: &[Spanned<ExprKind>],
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args: &[Spanned<Expr>],
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span: &Range<usize>,
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) -> Result<(), Error> {
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// Arguments that are ExprKind::Variable are pass by
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@ -368,11 +365,8 @@ impl ExecEnv {
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let args = args
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.iter()
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.map(|arg| {
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if let ExprKind::Variable(name) = &arg.item {
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self.get_var_rc(&Ident {
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ident: name.to_owned(),
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span: arg.span.clone(),
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})
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if let Expr::Variable(name) = &arg.item {
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self.get_var_rc(&Spanned::new(name.to_owned(), arg.span.clone()))
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} else {
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self.eval_expr(arg).map(ValueRef::new)
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}
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@ -522,9 +516,9 @@ impl ExecEnv {
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/// Get the value of a variable. Throw an error if the variable is
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/// inaccessible or banned.
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fn get_var(&self, name: &Ident) -> Result<Value, Error> {
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fn get_var(&self, name: &Spanned<String>) -> Result<Value, Error> {
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// One-letter names are reserved as base55 numbers.
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let mut chars = name.ident.chars();
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let mut chars = name.item.chars();
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if let (Some(first), None) = (chars.next(), chars.next()) {
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return Ok(Value::Int(base_55::char2num(first)));
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}
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@ -535,20 +529,20 @@ impl ExecEnv {
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.stack
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.iter()
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.rev()
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.find_map(|scope| scope.variables.get(&name.ident))
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.find_map(|scope| scope.variables.get(&name.item))
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{
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Some(var) => {
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if !var.melo {
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Ok(var.value.borrow().clone())
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} else {
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Err(Error {
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kind: ErrorKind::MeloVariable(name.ident.to_owned()),
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kind: ErrorKind::MeloVariable(name.item.to_owned()),
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span: name.span.clone(),
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})
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}
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}
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None => Err(Error {
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kind: ErrorKind::UnknownVariable(name.ident.to_owned()),
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kind: ErrorKind::UnknownVariable(name.item.to_owned()),
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span: name.span.clone(),
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}),
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}
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@ -556,27 +550,27 @@ impl ExecEnv {
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/// Get a mutable reference to a variable. Throw an error if the
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/// variable is inaccessible or banned.
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fn get_var_mut(&mut self, name: &Ident) -> Result<&mut Variable, Error> {
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fn get_var_mut(&mut self, name: &Spanned<String>) -> Result<&mut Variable, Error> {
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// This function has a lot of duplicated code with `get_var`,
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// which I feel like is a bad sign...
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match self
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.stack
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.iter_mut()
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.rev()
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.find_map(|scope| scope.variables.get_mut(&name.ident))
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.find_map(|scope| scope.variables.get_mut(&name.item))
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{
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Some(var) => {
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if !var.melo {
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Ok(var)
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} else {
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Err(Error {
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kind: ErrorKind::MeloVariable(name.ident.to_owned()),
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kind: ErrorKind::MeloVariable(name.item.to_owned()),
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span: name.span.clone(),
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})
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}
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}
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None => Err(Error {
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kind: ErrorKind::UnknownVariable(name.ident.to_owned()),
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kind: ErrorKind::UnknownVariable(name.item.to_owned()),
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span: name.span.clone(),
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}),
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}
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@ -584,7 +578,7 @@ impl ExecEnv {
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/// Get an Rc'd pointer to the value of a variable. Throw an error
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/// if the variable is inaccessible or banned.
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fn get_var_rc(&mut self, name: &Ident) -> Result<ValueRef, Error> {
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fn get_var_rc(&mut self, name: &Spanned<String>) -> Result<ValueRef, Error> {
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Ok(self.get_var_mut(name)?.value.clone())
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}
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|
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@ -606,7 +600,7 @@ impl ExecEnv {
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#[cfg(test)]
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mod tests {
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use crate::ast::ExprKind;
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use crate::ast::Expr;
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use super::*;
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|
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@ -615,14 +609,14 @@ mod tests {
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// Check that 2 + 2 = 4.
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let env = ExecEnv::new();
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assert_eq!(
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env.eval_expr(&Expr {
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kind: ExprKind::BinOp {
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lhs: Box::new(Expr {
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kind: ExprKind::Literal(Value::Int(2)),
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env.eval_expr(&Spanned {
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item: Expr::BinOp {
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lhs: Box::new(Spanned {
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item: Expr::Literal(Value::Int(2)),
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span: 1..1,
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}),
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rhs: Box::new(Expr {
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kind: ExprKind::Literal(Value::Int(2)),
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rhs: Box::new(Spanned {
|
||||
item: Expr::Literal(Value::Int(2)),
|
||||
span: 1..1,
|
||||
}),
|
||||
kind: crate::ast::BinOpKind::Add,
|
||||
|
|
@ -642,14 +636,14 @@ mod tests {
|
|||
|
||||
let env = ExecEnv::new();
|
||||
assert_eq!(
|
||||
env.eval_expr(&Expr {
|
||||
kind: ExprKind::BinOp {
|
||||
lhs: Box::new(Expr {
|
||||
kind: ExprKind::Literal(Value::Int(2)),
|
||||
env.eval_expr(&Spanned {
|
||||
item: Expr::BinOp {
|
||||
lhs: Box::new(Spanned {
|
||||
item: Expr::Literal(Value::Int(2)),
|
||||
span: 1..1,
|
||||
}),
|
||||
rhs: Box::new(Expr {
|
||||
kind: ExprKind::Literal(Value::Abool(Abool::Always)),
|
||||
rhs: Box::new(Spanned {
|
||||
item: Expr::Literal(Value::Abool(Abool::Always)),
|
||||
span: 1..1,
|
||||
}),
|
||||
kind: crate::ast::BinOpKind::Add,
|
||||
|
|
@ -667,14 +661,14 @@ mod tests {
|
|||
// of panicking.
|
||||
let env = ExecEnv::new();
|
||||
assert_eq!(
|
||||
env.eval_expr(&Expr {
|
||||
kind: ExprKind::BinOp {
|
||||
lhs: Box::new(Expr {
|
||||
kind: ExprKind::Literal(Value::Int(isize::MAX)),
|
||||
env.eval_expr(&Spanned {
|
||||
item: Expr::BinOp {
|
||||
lhs: Box::new(Spanned {
|
||||
item: Expr::Literal(Value::Int(isize::MAX)),
|
||||
span: 1..1,
|
||||
}),
|
||||
rhs: Box::new(Expr {
|
||||
kind: ExprKind::Literal(Value::Int(1)),
|
||||
rhs: Box::new(Spanned {
|
||||
item: Expr::Literal(Value::Int(1)),
|
||||
span: 1..1,
|
||||
}),
|
||||
kind: crate::ast::BinOpKind::Add,
|
||||
|
|
@ -687,14 +681,14 @@ mod tests {
|
|||
|
||||
// And the same for divide by zero.
|
||||
assert_eq!(
|
||||
env.eval_expr(&Expr {
|
||||
kind: ExprKind::BinOp {
|
||||
lhs: Box::new(Expr {
|
||||
kind: ExprKind::Literal(Value::Int(84)),
|
||||
env.eval_expr(&Spanned {
|
||||
item: Expr::BinOp {
|
||||
lhs: Box::new(Spanned {
|
||||
item: Expr::Literal(Value::Int(84)),
|
||||
span: 1..1,
|
||||
}),
|
||||
rhs: Box::new(Expr {
|
||||
kind: ExprKind::Literal(Value::Int(0)),
|
||||
rhs: Box::new(Spanned {
|
||||
item: Expr::Literal(Value::Int(0)),
|
||||
span: 1..1,
|
||||
}),
|
||||
kind: crate::ast::BinOpKind::Divide,
|
||||
|
|
@ -728,8 +722,8 @@ mod tests {
|
|||
// Declaring and reading from a variable.
|
||||
eval(&mut env, "var foo = 32; var bar = foo + 1;").unwrap();
|
||||
assert_eq!(
|
||||
env.get_var(&Ident {
|
||||
ident: "bar".to_owned(),
|
||||
env.get_var(&Spanned {
|
||||
item: "bar".to_owned(),
|
||||
span: 1..1,
|
||||
})
|
||||
.unwrap(),
|
||||
|
|
@ -739,8 +733,8 @@ mod tests {
|
|||
// Assigning an existing variable.
|
||||
eval(&mut env, "foo = /*hi*/;").unwrap();
|
||||
assert_eq!(
|
||||
env.get_var(&Ident {
|
||||
ident: "foo".to_owned(),
|
||||
env.get_var(&Spanned {
|
||||
item: "foo".to_owned(),
|
||||
span: 1..1,
|
||||
})
|
||||
.unwrap(),
|
||||
|
|
@ -765,8 +759,8 @@ mod tests {
|
|||
.unwrap();
|
||||
|
||||
assert_eq!(
|
||||
env.get_var(&Ident {
|
||||
ident: "foo".to_owned(),
|
||||
env.get_var(&Spanned {
|
||||
item: "foo".to_owned(),
|
||||
span: 1..1,
|
||||
})
|
||||
.unwrap(),
|
||||
|
|
|
|||
|
|
@ -29,7 +29,7 @@ impl<'source> Parser<'source> {
|
|||
/// Start parsing tokens
|
||||
///
|
||||
/// Loops trough lexer, parses statements, returns AST
|
||||
pub fn init(&mut self) -> Result<Vec<Spanned<StmtKind>>, Error> {
|
||||
pub fn init(&mut self) -> Result<Block, Error> {
|
||||
let mut ast = vec![];
|
||||
while let Some(token) = self.lexer.next() {
|
||||
match token {
|
||||
|
|
@ -37,7 +37,7 @@ impl<'source> Parser<'source> {
|
|||
Token::Comment => continue,
|
||||
|
||||
// T-Dark block (replace `lang` with `script`)
|
||||
Token::TDark => ast.extend(self.tdark_flow()?.block),
|
||||
Token::TDark => ast.extend(self.tdark_flow()?),
|
||||
token => ast.push(self.parse(token)?),
|
||||
}
|
||||
}
|
||||
|
|
@ -64,7 +64,7 @@ impl<'source> Parser<'source> {
|
|||
///
|
||||
/// This function will route to corresponding flow functions
|
||||
/// which may advance the lexer iterator
|
||||
fn parse(&mut self, token: Token) -> Result<Spanned<StmtKind>, Error> {
|
||||
fn parse(&mut self, token: Token) -> Result<Spanned<Stmt>, Error> {
|
||||
let start = self.lexer.span().start;
|
||||
|
||||
match token {
|
||||
|
|
@ -75,22 +75,28 @@ impl<'source> Parser<'source> {
|
|||
)),
|
||||
Token::Bff => Ok(Spanned::new(self.bff_flow()?, start..self.lexer.span().end)),
|
||||
Token::Var => Ok(Spanned::new(self.var_flow()?, start..self.lexer.span().end)),
|
||||
Token::Melo => Ok(Spanned::new(self.melo_flow()?, start..self.lexer.span().end)),
|
||||
Token::Loop => Ok(Spanned::new(self.loop_flow()?, start..self.lexer.span().end)),
|
||||
Token::Melo => Ok(Spanned::new(
|
||||
self.melo_flow()?,
|
||||
start..self.lexer.span().end,
|
||||
)),
|
||||
Token::Loop => Ok(Spanned::new(
|
||||
self.loop_flow()?,
|
||||
start..self.lexer.span().end,
|
||||
)),
|
||||
Token::Break => Ok(Spanned::new(
|
||||
self.semicolon_terminated(StmtKind::Break)?,
|
||||
self.semicolon_terminated(Stmt::Break)?,
|
||||
start..self.lexer.span().end,
|
||||
)),
|
||||
Token::HopBack => Ok(Spanned::new(
|
||||
self.semicolon_terminated(StmtKind::HopBack)?,
|
||||
self.semicolon_terminated(Stmt::HopBack)?,
|
||||
start..self.lexer.span().end,
|
||||
)),
|
||||
Token::Rlyeh => Ok(Spanned::new(
|
||||
self.semicolon_terminated(StmtKind::Rlyeh)?,
|
||||
self.semicolon_terminated(Stmt::Rlyeh)?,
|
||||
start..self.lexer.span().end,
|
||||
)),
|
||||
Token::Rickroll => Ok(Spanned::new(
|
||||
self.semicolon_terminated(StmtKind::Rickroll)?,
|
||||
self.semicolon_terminated(Stmt::Rickroll)?,
|
||||
start..self.lexer.span().end,
|
||||
)),
|
||||
|
||||
|
|
@ -114,7 +120,7 @@ impl<'source> Parser<'source> {
|
|||
/// Require statement to be semicolon terminated
|
||||
///
|
||||
/// Utility function for short statements
|
||||
fn semicolon_terminated(&mut self, stmt_kind: StmtKind) -> Result<StmtKind, Error> {
|
||||
fn semicolon_terminated(&mut self, stmt_kind: Stmt) -> Result<Stmt, Error> {
|
||||
self.require(Token::Semicolon)?;
|
||||
Ok(stmt_kind)
|
||||
}
|
||||
|
|
@ -128,16 +134,16 @@ impl<'source> Parser<'source> {
|
|||
}
|
||||
|
||||
/// Get an Identifier
|
||||
fn get_ident(&mut self) -> Result<Ident, Error> {
|
||||
fn get_ident(&mut self) -> Result<Spanned<String>, Error> {
|
||||
match self.checked_next()? {
|
||||
Token::Identifier(ident) => Ok(Ident {
|
||||
ident: if self.tdark {
|
||||
Token::Identifier(ident) => Ok(Spanned::new(
|
||||
if self.tdark {
|
||||
ident.replace("lang", "script")
|
||||
} else {
|
||||
ident
|
||||
},
|
||||
span: self.lexer.span(),
|
||||
}),
|
||||
self.lexer.span(),
|
||||
)),
|
||||
t => Err(Error::new(ErrorKind::UnexpectedToken(t), self.lexer.span())),
|
||||
}
|
||||
}
|
||||
|
|
@ -147,7 +153,11 @@ impl<'source> Parser<'source> {
|
|||
/// AbleScript strongly separates expressions from statements.
|
||||
/// Expressions do not have any side effects and the are
|
||||
/// only mathematial and logical operations or values.
|
||||
fn parse_expr(&mut self, token: Token, buf: &mut Option<Spanned<ExprKind>>) -> Result<Spanned<ExprKind>, Error> {
|
||||
fn parse_expr(
|
||||
&mut self,
|
||||
token: Token,
|
||||
buf: &mut Option<Spanned<Expr>>,
|
||||
) -> Result<Spanned<Expr>, Error> {
|
||||
let start = match buf {
|
||||
Some(e) => e.span.start,
|
||||
None => self.lexer.span().start,
|
||||
|
|
@ -156,7 +166,7 @@ impl<'source> Parser<'source> {
|
|||
match token {
|
||||
// Values
|
||||
Token::Identifier(i) => Ok(Spanned::new(
|
||||
ExprKind::Variable(if self.tdark {
|
||||
Expr::Variable(if self.tdark {
|
||||
i.replace("lang", "script")
|
||||
} else {
|
||||
i
|
||||
|
|
@ -164,11 +174,11 @@ impl<'source> Parser<'source> {
|
|||
start..self.lexer.span().end,
|
||||
)),
|
||||
Token::Integer(i) => Ok(Spanned::new(
|
||||
ExprKind::Literal(Value::Int(i)),
|
||||
Expr::Literal(Value::Int(i)),
|
||||
start..self.lexer.span().end,
|
||||
)),
|
||||
Token::String(s) => Ok(Spanned::new(
|
||||
ExprKind::Literal(Value::Str(if self.tdark {
|
||||
Expr::Literal(Value::Str(if self.tdark {
|
||||
s.replace("lang", "script")
|
||||
} else {
|
||||
s
|
||||
|
|
@ -181,7 +191,10 @@ impl<'source> Parser<'source> {
|
|||
self.index_flow(buf)?,
|
||||
start..self.lexer.span().end,
|
||||
)),
|
||||
None => Ok(Spanned::new(self.cart_flow()?, start..self.lexer.span().end)),
|
||||
None => Ok(Spanned::new(
|
||||
self.cart_flow()?,
|
||||
start..self.lexer.span().end,
|
||||
)),
|
||||
},
|
||||
|
||||
// Operations
|
||||
|
|
@ -203,7 +216,7 @@ impl<'source> Parser<'source> {
|
|||
Token::Not => Ok(Spanned::new(
|
||||
{
|
||||
let next = self.checked_next()?;
|
||||
ExprKind::Not(Box::new(self.parse_expr(next, buf)?))
|
||||
Expr::Not(Box::new(self.parse_expr(next, buf)?))
|
||||
},
|
||||
start..self.lexer.span().end,
|
||||
)),
|
||||
|
|
@ -214,7 +227,7 @@ impl<'source> Parser<'source> {
|
|||
}
|
||||
|
||||
/// Flow for creating carts
|
||||
fn cart_flow(&mut self) -> Result<ExprKind, Error> {
|
||||
fn cart_flow(&mut self) -> Result<Expr, Error> {
|
||||
let mut cart = vec![];
|
||||
let mut buf = None;
|
||||
|
||||
|
|
@ -256,24 +269,24 @@ impl<'source> Parser<'source> {
|
|||
}
|
||||
}
|
||||
|
||||
Ok(ExprKind::Cart(cart))
|
||||
Ok(Expr::Cart(cart))
|
||||
}
|
||||
|
||||
/// Flow for indexing operations
|
||||
///
|
||||
/// Indexing with empty index resolves to length of expression, else it indexes
|
||||
fn index_flow(&mut self, expr: Spanned<ExprKind>) -> Result<ExprKind, Error> {
|
||||
fn index_flow(&mut self, expr: Spanned<Expr>) -> Result<Expr, Error> {
|
||||
let mut buf = None;
|
||||
Ok(loop {
|
||||
match self.checked_next()? {
|
||||
Token::RightBracket => match buf {
|
||||
Some(index) => {
|
||||
break ExprKind::Index {
|
||||
break Expr::Index {
|
||||
expr: Box::new(expr),
|
||||
index: Box::new(index),
|
||||
}
|
||||
}
|
||||
None => break ExprKind::Len(Box::new(expr)),
|
||||
None => break Expr::Len(Box::new(expr)),
|
||||
},
|
||||
token => buf = Some(self.parse_expr(token, &mut buf)?),
|
||||
}
|
||||
|
|
@ -285,8 +298,12 @@ impl<'source> Parser<'source> {
|
|||
/// Generates operation from LHS buffer and next expression as RHS
|
||||
///
|
||||
/// This is unaware of precedence, as AbleScript do not have it
|
||||
fn binop_flow(&mut self, kind: BinOpKind, lhs: &mut Option<Spanned<ExprKind>>) -> Result<ExprKind, Error> {
|
||||
Ok(ExprKind::BinOp {
|
||||
fn binop_flow(
|
||||
&mut self,
|
||||
kind: BinOpKind,
|
||||
lhs: &mut Option<Spanned<Expr>>,
|
||||
) -> Result<Expr, Error> {
|
||||
Ok(Expr::BinOp {
|
||||
lhs: Box::new(
|
||||
lhs.take()
|
||||
.ok_or_else(|| Error::new(ErrorKind::MissingLhs, self.lexer.span()))?,
|
||||
|
|
@ -303,7 +320,7 @@ impl<'source> Parser<'source> {
|
|||
}
|
||||
|
||||
/// Parse expressions until terminate token
|
||||
fn expr_flow(&mut self, terminate: Token) -> Result<Spanned<ExprKind>, Error> {
|
||||
fn expr_flow(&mut self, terminate: Token) -> Result<Spanned<Expr>, Error> {
|
||||
let mut buf = None;
|
||||
Ok(loop {
|
||||
match self.checked_next()? {
|
||||
|
|
@ -325,11 +342,11 @@ impl<'source> Parser<'source> {
|
|||
loop {
|
||||
match self.checked_next()? {
|
||||
Token::RightCurly => break,
|
||||
Token::TDark => block.extend(self.tdark_flow()?.block),
|
||||
Token::TDark => block.extend(self.tdark_flow()?),
|
||||
t => block.push(self.parse(t)?),
|
||||
}
|
||||
}
|
||||
Ok(Block { block })
|
||||
Ok(block)
|
||||
}
|
||||
|
||||
/// Parse T-Dark block
|
||||
|
|
@ -343,13 +360,13 @@ impl<'source> Parser<'source> {
|
|||
/// If Statement parser gets any kind of value (Identifier or Literal)
|
||||
/// It cannot parse it as it do not parse expressions. Instead of it it
|
||||
/// will parse it to function call or print statement.
|
||||
fn value_flow(&mut self, init: Token) -> Result<StmtKind, Error> {
|
||||
fn value_flow(&mut self, init: Token) -> Result<Stmt, Error> {
|
||||
let mut buf = Some(self.parse_expr(init, &mut None)?);
|
||||
let r = loop {
|
||||
match self.checked_next()? {
|
||||
// Print to stdout
|
||||
Token::Print => {
|
||||
let stmt = StmtKind::Print(buf.take().ok_or_else(|| {
|
||||
let stmt = Stmt::Print(buf.take().ok_or_else(|| {
|
||||
Error::new(ErrorKind::UnexpectedToken(Token::Print), self.lexer.span())
|
||||
})?);
|
||||
break self.semicolon_terminated(stmt)?;
|
||||
|
|
@ -368,7 +385,7 @@ impl<'source> Parser<'source> {
|
|||
// Variable Assignment
|
||||
Token::Equal => {
|
||||
if let Some(Ok(assignable)) = buf.take().map(Assignable::from_expr) {
|
||||
break StmtKind::Assign {
|
||||
break Stmt::Assign {
|
||||
assignable,
|
||||
value: self.expr_flow(Token::Semicolon)?,
|
||||
};
|
||||
|
|
@ -384,7 +401,7 @@ impl<'source> Parser<'source> {
|
|||
Token::Read => {
|
||||
if let Some(Ok(assignable)) = buf.take().map(Assignable::from_expr) {
|
||||
self.require(Token::Semicolon)?;
|
||||
break StmtKind::Read(assignable);
|
||||
break Stmt::Read(assignable);
|
||||
} else {
|
||||
return Err(Error::new(
|
||||
ErrorKind::UnexpectedToken(Token::Read),
|
||||
|
|
@ -403,20 +420,20 @@ impl<'source> Parser<'source> {
|
|||
/// Parse If flow
|
||||
///
|
||||
/// Consists of condition and block, there is no else
|
||||
fn if_flow(&mut self) -> Result<StmtKind, Error> {
|
||||
fn if_flow(&mut self) -> Result<Stmt, Error> {
|
||||
self.require(Token::LeftParen)?;
|
||||
|
||||
let cond = self.expr_flow(Token::RightParen)?;
|
||||
|
||||
let body = self.get_block()?;
|
||||
|
||||
Ok(StmtKind::If { cond, body })
|
||||
Ok(Stmt::If { cond, body })
|
||||
}
|
||||
|
||||
/// Parse functio flow
|
||||
///
|
||||
/// functio $ident (a, b, c) { ... }
|
||||
fn functio_flow(&mut self) -> Result<StmtKind, Error> {
|
||||
fn functio_flow(&mut self) -> Result<Stmt, Error> {
|
||||
let ident = self.get_ident()?;
|
||||
|
||||
self.require(Token::LeftParen)?;
|
||||
|
|
@ -426,7 +443,7 @@ impl<'source> Parser<'source> {
|
|||
match self.checked_next()? {
|
||||
Token::RightParen => break,
|
||||
Token::Identifier(i) => {
|
||||
params.push(Ident::new(i, self.lexer.span()));
|
||||
params.push(Spanned::new(i, self.lexer.span()));
|
||||
|
||||
// Require comma (next) or right paren (end) after identifier
|
||||
match self.checked_next()? {
|
||||
|
|
@ -446,7 +463,7 @@ impl<'source> Parser<'source> {
|
|||
|
||||
let body = self.get_block()?;
|
||||
|
||||
Ok(StmtKind::Functio {
|
||||
Ok(Stmt::Functio {
|
||||
ident,
|
||||
params,
|
||||
body,
|
||||
|
|
@ -456,7 +473,7 @@ impl<'source> Parser<'source> {
|
|||
/// Parse BF function declaration
|
||||
///
|
||||
/// `bff $ident ([tapelen]) { ... }`
|
||||
fn bff_flow(&mut self) -> Result<StmtKind, Error> {
|
||||
fn bff_flow(&mut self) -> Result<Stmt, Error> {
|
||||
let ident = self.get_ident()?;
|
||||
|
||||
let tape_len = match self.checked_next()? {
|
||||
|
|
@ -489,7 +506,7 @@ impl<'source> Parser<'source> {
|
|||
}
|
||||
}
|
||||
|
||||
Ok(StmtKind::BfFunctio {
|
||||
Ok(Stmt::BfFunctio {
|
||||
ident,
|
||||
tape_len,
|
||||
code,
|
||||
|
|
@ -497,7 +514,7 @@ impl<'source> Parser<'source> {
|
|||
}
|
||||
|
||||
/// Parse functio call flow
|
||||
fn functio_call_flow(&mut self, expr: Spanned<ExprKind>) -> Result<StmtKind, Error> {
|
||||
fn functio_call_flow(&mut self, expr: Spanned<Expr>) -> Result<Stmt, Error> {
|
||||
let mut args = vec![];
|
||||
let mut buf = None;
|
||||
loop {
|
||||
|
|
@ -526,11 +543,11 @@ impl<'source> Parser<'source> {
|
|||
}
|
||||
|
||||
self.require(Token::Semicolon)?;
|
||||
Ok(StmtKind::Call { expr, args })
|
||||
Ok(Stmt::Call { expr, args })
|
||||
}
|
||||
|
||||
/// Parse variable declaration
|
||||
fn var_flow(&mut self) -> Result<StmtKind, Error> {
|
||||
fn var_flow(&mut self) -> Result<Stmt, Error> {
|
||||
let ident = self.get_ident()?;
|
||||
let init = match self.checked_next()? {
|
||||
Token::Equal => Some(self.expr_flow(Token::Semicolon)?),
|
||||
|
|
@ -538,20 +555,20 @@ impl<'source> Parser<'source> {
|
|||
t => return Err(Error::new(ErrorKind::UnexpectedToken(t), self.lexer.span())),
|
||||
};
|
||||
|
||||
Ok(StmtKind::Var { ident, init })
|
||||
Ok(Stmt::Var { ident, init })
|
||||
}
|
||||
|
||||
/// Parse Melo flow
|
||||
fn melo_flow(&mut self) -> Result<StmtKind, Error> {
|
||||
fn melo_flow(&mut self) -> Result<Stmt, Error> {
|
||||
let ident = self.get_ident()?;
|
||||
self.semicolon_terminated(StmtKind::Melo(ident))
|
||||
self.semicolon_terminated(Stmt::Melo(ident))
|
||||
}
|
||||
|
||||
/// Parse loop flow
|
||||
///
|
||||
/// `loop` is an infinite loop, no condition, only body
|
||||
fn loop_flow(&mut self) -> Result<StmtKind, Error> {
|
||||
Ok(StmtKind::Loop {
|
||||
fn loop_flow(&mut self) -> Result<Stmt, Error> {
|
||||
Ok(Stmt::Loop {
|
||||
body: self.get_block()?,
|
||||
})
|
||||
}
|
||||
|
|
@ -564,23 +581,23 @@ mod tests {
|
|||
#[test]
|
||||
fn simple_math() {
|
||||
let code = "1 * (a + 3) / 666 print;";
|
||||
let expected = &[Stmt {
|
||||
kind: StmtKind::Print(Expr {
|
||||
kind: ExprKind::BinOp {
|
||||
lhs: Box::new(Expr {
|
||||
kind: ExprKind::BinOp {
|
||||
lhs: Box::new(Expr {
|
||||
kind: ExprKind::Literal(Value::Int(1)),
|
||||
let expected = &[Spanned {
|
||||
item: Stmt::Print(Spanned {
|
||||
item: Expr::BinOp {
|
||||
lhs: Box::new(Spanned {
|
||||
item: Expr::BinOp {
|
||||
lhs: Box::new(Spanned {
|
||||
item: Expr::Literal(Value::Int(1)),
|
||||
span: 0..1,
|
||||
}),
|
||||
rhs: Box::new(Expr {
|
||||
kind: ExprKind::BinOp {
|
||||
lhs: Box::new(Expr {
|
||||
kind: ExprKind::Variable("a".to_owned()),
|
||||
rhs: Box::new(Spanned {
|
||||
item: Expr::BinOp {
|
||||
lhs: Box::new(Spanned {
|
||||
item: Expr::Variable("a".to_owned()),
|
||||
span: 5..6,
|
||||
}),
|
||||
rhs: Box::new(Expr {
|
||||
kind: ExprKind::Literal(Value::Int(3)),
|
||||
rhs: Box::new(Spanned {
|
||||
item: Expr::Literal(Value::Int(3)),
|
||||
span: 9..10,
|
||||
}),
|
||||
kind: BinOpKind::Add,
|
||||
|
|
@ -591,8 +608,8 @@ mod tests {
|
|||
},
|
||||
span: 0..11,
|
||||
}),
|
||||
rhs: Box::new(Expr {
|
||||
kind: ExprKind::Literal(Value::Int(666)),
|
||||
rhs: Box::new(Spanned {
|
||||
item: Expr::Literal(Value::Int(666)),
|
||||
span: 14..17,
|
||||
}),
|
||||
kind: BinOpKind::Divide,
|
||||
|
|
@ -609,14 +626,14 @@ mod tests {
|
|||
#[test]
|
||||
fn variable_declaration() {
|
||||
let code = "var a = 42;";
|
||||
let expected = &[Stmt {
|
||||
kind: StmtKind::Var {
|
||||
ident: Ident {
|
||||
ident: "a".to_owned(),
|
||||
let expected = &[Spanned {
|
||||
item: Stmt::Var {
|
||||
ident: Spanned {
|
||||
item: "a".to_owned(),
|
||||
span: 4..5,
|
||||
},
|
||||
init: Some(Expr {
|
||||
kind: ExprKind::Literal(Value::Int(42)),
|
||||
init: Some(Spanned {
|
||||
item: Expr::Literal(Value::Int(42)),
|
||||
span: 8..10,
|
||||
}),
|
||||
},
|
||||
|
|
@ -630,31 +647,29 @@ mod tests {
|
|||
#[test]
|
||||
fn if_flow() {
|
||||
let code = "if (a == always) { /*Buy Able products!*/ print; }";
|
||||
let expected = &[Stmt {
|
||||
kind: StmtKind::If {
|
||||
cond: Expr {
|
||||
kind: ExprKind::BinOp {
|
||||
lhs: Box::new(Expr {
|
||||
kind: ExprKind::Variable("a".to_owned()),
|
||||
let expected = &[Spanned {
|
||||
item: Stmt::If {
|
||||
cond: Spanned {
|
||||
item: Expr::BinOp {
|
||||
lhs: Box::new(Spanned {
|
||||
item: Expr::Variable("a".to_owned()),
|
||||
span: 4..5,
|
||||
}),
|
||||
rhs: Box::new(Expr {
|
||||
kind: ExprKind::Variable("always".to_owned()),
|
||||
rhs: Box::new(Spanned {
|
||||
item: Expr::Variable("always".to_owned()),
|
||||
span: 9..15,
|
||||
}),
|
||||
kind: BinOpKind::Equal,
|
||||
},
|
||||
span: 4..15,
|
||||
},
|
||||
body: Block {
|
||||
block: vec![Stmt {
|
||||
kind: StmtKind::Print(Expr {
|
||||
kind: ExprKind::Literal(Value::Str("Buy Able products!".to_owned())),
|
||||
span: 19..39,
|
||||
}),
|
||||
span: 19..46,
|
||||
}],
|
||||
},
|
||||
body: vec![Spanned {
|
||||
item: Stmt::Print(Spanned {
|
||||
item: Expr::Literal(Value::Str("Buy Able products!".to_owned())),
|
||||
span: 19..39,
|
||||
}),
|
||||
span: 19..46,
|
||||
}],
|
||||
},
|
||||
span: 0..48,
|
||||
}];
|
||||
|
|
@ -666,20 +681,20 @@ mod tests {
|
|||
#[test]
|
||||
fn tdark() {
|
||||
let code = "T-Dark { var lang = /*lang*/ + lang; }";
|
||||
let expected = &[Stmt {
|
||||
kind: StmtKind::Var {
|
||||
ident: Ident {
|
||||
ident: "script".to_owned(),
|
||||
let expected = &[Spanned {
|
||||
item: Stmt::Var {
|
||||
ident: Spanned {
|
||||
item: "script".to_owned(),
|
||||
span: 13..17,
|
||||
},
|
||||
init: Some(Expr {
|
||||
kind: ExprKind::BinOp {
|
||||
lhs: Box::new(Expr {
|
||||
kind: ExprKind::Literal(Value::Str("script".to_owned())),
|
||||
init: Some(Spanned {
|
||||
item: Expr::BinOp {
|
||||
lhs: Box::new(Spanned {
|
||||
item: Expr::Literal(Value::Str("script".to_owned())),
|
||||
span: 20..26,
|
||||
}),
|
||||
rhs: Box::new(Expr {
|
||||
kind: ExprKind::Variable("script".to_owned()),
|
||||
rhs: Box::new(Spanned {
|
||||
item: Expr::Variable("script".to_owned()),
|
||||
span: 29..33,
|
||||
}),
|
||||
kind: BinOpKind::Add,
|
||||
|
|
@ -697,33 +712,33 @@ mod tests {
|
|||
#[test]
|
||||
fn cart_construction() {
|
||||
let code = "[/*able*/ <= 1, /*script*/ <= 3 - 1] print;";
|
||||
let expected = &[Stmt {
|
||||
kind: StmtKind::Print(Expr {
|
||||
kind: ExprKind::Cart(vec![
|
||||
let expected = &[Spanned {
|
||||
item: Stmt::Print(Spanned {
|
||||
item: Expr::Cart(vec![
|
||||
(
|
||||
Expr {
|
||||
kind: ExprKind::Literal(Value::Str("able".to_owned())),
|
||||
Spanned {
|
||||
item: Expr::Literal(Value::Str("able".to_owned())),
|
||||
span: 1..7,
|
||||
},
|
||||
Expr {
|
||||
kind: ExprKind::Literal(Value::Int(1)),
|
||||
Spanned {
|
||||
item: Expr::Literal(Value::Int(1)),
|
||||
span: 11..12,
|
||||
},
|
||||
),
|
||||
(
|
||||
Expr {
|
||||
kind: ExprKind::Literal(Value::Str("script".to_owned())),
|
||||
Spanned {
|
||||
item: Expr::Literal(Value::Str("script".to_owned())),
|
||||
span: 14..22,
|
||||
},
|
||||
Expr {
|
||||
kind: ExprKind::BinOp {
|
||||
Spanned {
|
||||
item: Expr::BinOp {
|
||||
kind: BinOpKind::Subtract,
|
||||
lhs: Box::new(Expr {
|
||||
kind: ExprKind::Literal(Value::Int(3)),
|
||||
lhs: Box::new(Spanned {
|
||||
item: Expr::Literal(Value::Int(3)),
|
||||
span: 26..27,
|
||||
}),
|
||||
rhs: Box::new(Expr {
|
||||
kind: ExprKind::Literal(Value::Int(1)),
|
||||
rhs: Box::new(Spanned {
|
||||
item: Expr::Literal(Value::Int(1)),
|
||||
span: 30..31,
|
||||
}),
|
||||
},
|
||||
|
|
@ -743,24 +758,24 @@ mod tests {
|
|||
#[test]
|
||||
fn cart_index() {
|
||||
let code = "[/*able*/ <= /*ablecorp*/][/*ablecorp*/] print;";
|
||||
let expected = &[Stmt {
|
||||
kind: StmtKind::Print(Expr {
|
||||
kind: ExprKind::Index {
|
||||
expr: Box::new(Expr {
|
||||
kind: ExprKind::Cart(vec![(
|
||||
Expr {
|
||||
kind: ExprKind::Literal(Value::Str("able".to_owned())),
|
||||
let expected = &[Spanned {
|
||||
item: Stmt::Print(Spanned {
|
||||
item: Expr::Index {
|
||||
expr: Box::new(Spanned {
|
||||
item: Expr::Cart(vec![(
|
||||
Spanned {
|
||||
item: Expr::Literal(Value::Str("able".to_owned())),
|
||||
span: 1..7,
|
||||
},
|
||||
Expr {
|
||||
kind: ExprKind::Literal(Value::Str("ablecorp".to_owned())),
|
||||
Spanned {
|
||||
item: Expr::Literal(Value::Str("ablecorp".to_owned())),
|
||||
span: 11..21,
|
||||
},
|
||||
)]),
|
||||
span: 0..22,
|
||||
}),
|
||||
index: Box::new(Expr {
|
||||
kind: ExprKind::Literal(Value::Str("ablecorp".to_owned())),
|
||||
index: Box::new(Spanned {
|
||||
item: Expr::Literal(Value::Str("ablecorp".to_owned())),
|
||||
span: 23..33,
|
||||
}),
|
||||
},
|
||||
|
|
|
|||
|
|
@ -12,7 +12,7 @@ use std::{
|
|||
|
||||
use rand::Rng;
|
||||
|
||||
use crate::{brian::INSTRUCTION_MAPPINGS, consts, ast::{Spanned, StmtKind}};
|
||||
use crate::{ast::Block, brian::INSTRUCTION_MAPPINGS, consts};
|
||||
|
||||
#[derive(Debug, Clone, Copy, PartialEq, PartialOrd)]
|
||||
pub enum Abool {
|
||||
|
|
@ -58,7 +58,7 @@ pub enum Functio {
|
|||
},
|
||||
Able {
|
||||
params: Vec<String>,
|
||||
body: Vec<Spanned<StmtKind>>,
|
||||
body: Block,
|
||||
},
|
||||
Builtin(BuiltinFunctio),
|
||||
Chain {
|
||||
|
|
|
|||
Loading…
Reference in a new issue