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Better position of assignment errors.

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This commit is contained in:
Stephen Chung 2022-02-06 21:24:02 +08:00
parent 6a740a9fa1
commit cfbf0397a6
1 changed files with 7 additions and 5 deletions
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12
src/parser.rs
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@ -1758,7 +1758,7 @@ fn make_assignment_stmt(
}
Expr::Property(_, _) => None,
// Anything other than a property after dotting (e.g. a method call) is not an l-value
ref e => Some(e.start_position()),
ref e => Some(e.position()),
},
Expr::Index(x, term, _) | Expr::Dot(x, term, _) => match x.lhs {
Expr::Property(_, _) => unreachable!("unexpected Expr::Property in indexing"),
@ -1767,7 +1767,7 @@ fn make_assignment_stmt(
},
Expr::Property(_, _) if parent_is_dot => None,
Expr::Property(_, _) => unreachable!("unexpected Expr::Property in indexing"),
e if parent_is_dot => Some(e.start_position()),
e if parent_is_dot => Some(e.position()),
_ => None,
}
}
@ -1819,8 +1819,10 @@ fn make_assignment_stmt(
op_pos,
)),
// expr[???] = rhs, expr.??? = rhs
ref expr => Err(PERR::AssignmentToInvalidLHS("".to_string())
.into_err(expr.start_position())),
ref expr => {
Err(PERR::AssignmentToInvalidLHS("".to_string())
.into_err(expr.position()))
}
}
}
Some(err_pos) => {
@ -1835,7 +1837,7 @@ fn make_assignment_stmt(
)
.into_err(op_pos)),
// expr = rhs
_ => Err(PERR::AssignmentToInvalidLHS("".to_string()).into_err(lhs.start_position())),
_ => Err(PERR::AssignmentToInvalidLHS("".to_string()).into_err(lhs.position())),
}
}