use crate::{ast::{self, FieldKind}, SyntaxError, SyntaxErrorKind::*, }; pub(crate) fn validate_field_expr_node(node: &ast::FieldExpr, errors: &mut Vec) { if let Some(FieldKind::Index(idx)) = node.field_access() { if idx.text().chars().any(|c| c < '0' || c > '9') { errors.push(SyntaxError::new(InvalidTupleIndexFormat, idx.range())); } } }