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parser: workaround for assignment by ref

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Ryan Chandler 2022-12-05 00:32:40 +00:00
parent e8b58ba52b
commit d71600ee65
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2 changed files with 14 additions and 3 deletions
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1
src/parser/ast.rs
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@ -833,6 +833,7 @@ pub enum InfixOp {
And, And,
Or, Or,
Assign, Assign,
AssignRef,
AddAssign, AddAssign,
Pow, Pow,
Instanceof, Instanceof,

16
src/parser/mod.rs
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@ -1353,8 +1353,15 @@ impl Parser {
} }
} }
_ => { _ => {
// FIXME: Hacky, should probably be refactored.
let by_ref = kind == TokenKind::Equals && state.current.kind == TokenKind::Ampersand;
if by_ref {
state.next();
}
let rhs = self.expression(state, rpred)?; let rhs = self.expression(state, rpred)?;
left = infix(left, kind, rhs);
left = infix(left, kind, rhs, by_ref);
} }
} }
@ -1853,10 +1860,13 @@ fn prefix(op: &TokenKind, rhs: Expression) -> Expression {
} }
} }
fn infix(lhs: Expression, op: TokenKind, rhs: Expression) -> Expression { fn infix(lhs: Expression, op: TokenKind, rhs: Expression, by_ref: bool) -> Expression {
Expression::Infix { Expression::Infix {
lhs: Box::new(lhs), lhs: Box::new(lhs),
op: op.into(), op: match (&op, by_ref) {
(TokenKind::Equals, true) => ast::InfixOp::AssignRef,
_ => op.into()
},
rhs: Box::new(rhs), rhs: Box::new(rhs),
} }
} }