228         Some(node) if node.as_rule() == rule => Ok(node),  in expect()
229         Some(node) => err_unexpected_rule(rule, node.as_rule()),  in expect()
284 fn parse_endianness(node: Node<'_>, context: &Context) -> Result<crate::ast::Endianness, String> {  in parse_endianness()
285     if node.as_rule() != Rule::endianness_declaration {  in parse_endianness()
286         err_unexpected_rule(Rule::endianness_declaration, node.as_rule())  in parse_endianness()
289             loc: node.as_loc(context),  in parse_endianness()
290             value: match node.as_str() {  in parse_endianness()
299 fn parse_constraint(node: Node<'_>, context: &Context) -> Result<crate::ast::Constraint, String> {  in parse_constraint()
300     if node.as_rule() != Rule::constraint {  in parse_constraint()
301         err_unexpected_rule(Rule::constraint, node.as_rule())  in parse_constraint()
303         let loc = node.as_loc(context);  in parse_constraint()
304         let mut children = node.children();  in parse_constraint()
319 fn parse_enum_value(node: Node<'_>, context: &Context) -> Result<crate::ast::TagValue, String> {  in parse_enum_value()
320     if node.as_rule() != Rule::enum_value {  in parse_enum_value()
321         err_unexpected_rule(Rule::enum_value, node.as_rule())  in parse_enum_value()
323         let loc = node.as_loc(context);  in parse_enum_value()
324         let mut children = node.children();  in parse_enum_value()
339 fn parse_enum_range(node: Node<'_>, context: &Context) -> Result<crate::ast::TagRange, String> {  in parse_enum_range()
340     if node.as_rule() != Rule::enum_range {  in parse_enum_range()
341         err_unexpected_rule(Rule::enum_range, node.as_rule())  in parse_enum_range()
343         let loc = node.as_loc(context);  in parse_enum_range()
344         let mut children = node.children();  in parse_enum_range()
353 fn parse_enum_tag(node: Node<'_>, context: &Context) -> Result<crate::ast::Tag, String> {  in parse_enum_tag()
354     if node.as_rule() != Rule::enum_tag {  in parse_enum_tag()
355         err_unexpected_rule(Rule::enum_tag, node.as_rule())  in parse_enum_tag()
357         match node.children().next() {  in parse_enum_tag()
358             Some(node) if node.as_rule() == Rule::enum_value => {  in parse_enum_tag()
359                 Ok(crate::ast::Tag::Value(parse_enum_value(node, context)?))  in parse_enum_tag()
361             Some(node) if node.as_rule() == Rule::enum_range => {  in parse_enum_tag()
362                 Ok(crate::ast::Tag::Range(parse_enum_range(node, context)?))  in parse_enum_tag()
364             Some(node) => Err(format!(  in parse_enum_tag()
368                 node.as_rule()  in parse_enum_tag()
387 fn parse_field(node: Node<'_>, context: &Context) -> Result<ast::Field, String> {  in parse_field()
388     let loc = node.as_loc(context);  in parse_field()
389     let rule = node.as_rule();  in parse_field()
390     let mut children = node.children();  in parse_field()
520     for node in root.children() {  in parse_toplevel()
521         let loc = node.as_loc(context);  in parse_toplevel()
522         let rule = node.as_rule();  in parse_toplevel()
524             Rule::endianness_declaration => file.endianness = parse_endianness(node, context)?,  in parse_toplevel()
526                 let mut children = node.children();  in parse_toplevel()
536                 let mut children = node.children();  in parse_toplevel()
546                 let mut children = node.children();  in parse_toplevel()
556                 let mut children = node.children();  in parse_toplevel()
567                 let mut children = node.children();  in parse_toplevel()
578                 let mut children = node.children();  in parse_toplevel()