Function get_source_fields

rust/fory-derive/src/util.rs:82–124

Returns source fields with their original indices and field names preserved.

(fields: &[&'a Field])

/// Returns source fields with their original indices and field names preserved.
pub fn get_source_fields<'a>(fields: &[&'a Field]) -> Vec<SourceField<'a>> {
    use crate::object::util::get_sorted_field_names;

    let is_tuple = !fields.is_empty() && fields[0].ident.is_none();
    let sorted_names = get_sorted_field_names(fields);
    let mut result = Vec::with_capacity(fields.len());

    for name in &sorted_names {
        if is_tuple {
            // For tuple structs, field name is the original index as string
            if let Ok(idx) = name.parse::<usize>() {
                if idx < fields.len() {
                    result.push(SourceField {
                        original_index: idx,
                        field: fields[idx],
                        field_name: name.clone(),
                        is_tuple_struct: true,
                    });
                }
            }
        } else {
            // For named structs, match by field identifier
            for (idx, field) in fields.iter().enumerate() {
                if field
                    .ident
                    .as_ref()
                    .map(|ident| ident == name)
                    .unwrap_or(false)
                {
                    result.push(SourceField {
                        original_index: idx,
                        field,
                        field_name: name.clone(),
                        is_tuple_struct: false,
                    });
                    break;
                }
            }
        }
    }

    result
}

/// Extract just the fields from source fields.
pub fn extract_fields<'a>(source_fields: &[SourceField<'a>]) -> Vec<&'a Field> {