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Enable export let/export const short-hand.

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Stephen Chung
2020-11-09 12:21:11 +08:00
parent 48886eacc8
commit 4b622a8830
5 changed files with 81 additions and 54 deletions
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30
src/ast.rs
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@@ -608,10 +608,10 @@ pub enum Stmt {
Loop(Box<Stmt>, Position),
/// for id in expr { stmt }
For(Expr, Box<(String, Stmt)>, Position),
/// let id = expr
Let(Box<Ident>, Option<Expr>, Position),
/// const id = expr
Const(Box<Ident>, Option<Expr>, Position),
/// [export] let id = expr
Let(Box<Ident>, Option<Expr>, bool, Position),
/// [export] const id = expr
Const(Box<Ident>, Option<Expr>, bool, Position),
/// expr op= expr
Assignment(Box<(Expr, Cow<'static, str>, Expr)>, Position),
/// { stmt; ... }
@@ -665,10 +665,10 @@ impl Stmt {
| Self::While(_, _, pos)
| Self::Loop(_, pos)
| Self::For(_, _, pos)
| Self::ReturnWithVal((_, pos), _, _) => *pos,
Self::Let(x, _, _) | Self::Const(x, _, _) => x.pos,
Self::TryCatch(_, pos, _) => *pos,
| Self::ReturnWithVal((_, pos), _, _)
| Self::Let(_, _, _, pos)
| Self::Const(_, _, _, pos)
| Self::TryCatch(_, pos, _) => *pos,
Self::Expr(x) => x.position(),
@@ -694,10 +694,10 @@ impl Stmt {
| Self::While(_, _, pos)
| Self::Loop(_, pos)
| Self::For(_, _, pos)
| Self::ReturnWithVal((_, pos), _, _) => *pos = new_pos,
Self::Let(x, _, _) | Self::Const(x, _, _) => x.pos = new_pos,
Self::TryCatch(_, pos, _) => *pos = new_pos,
| Self::ReturnWithVal((_, pos), _, _)
| Self::Let(_, _, _, pos)
| Self::Const(_, _, _, pos)
| Self::TryCatch(_, pos, _) => *pos = new_pos,
Self::Expr(x) => {
x.set_position(new_pos);
@@ -728,8 +728,8 @@ impl Stmt {
// A No-op requires a semicolon in order to know it is an empty statement!
Self::Noop(_) => false,
Self::Let(_, _, _)
| Self::Const(_, _, _)
Self::Let(_, _, _, _)
| Self::Const(_, _, _, _)
| Self::Assignment(_, _)
| Self::Expr(_)
| Self::Continue(_)
@@ -756,7 +756,7 @@ impl Stmt {
Self::While(condition, block, _) => condition.is_pure() && block.is_pure(),
Self::Loop(block, _) => block.is_pure(),
Self::For(iterable, x, _) => iterable.is_pure() && x.1.is_pure(),
Self::Let(_, _, _) | Self::Const(_, _, _) | Self::Assignment(_, _) => false,
Self::Let(_, _, _, _) | Self::Const(_, _, _, _) | Self::Assignment(_, _) => false,
Self::Block(block, _) => block.iter().all(|stmt| stmt.is_pure()),
Self::Continue(_) | Self::Break(_) | Self::ReturnWithVal(_, _, _) => false,
Self::TryCatch(x, _, _) => x.0.is_pure() && x.2.is_pure(),