Struct FieldInfo 

pub struct FieldInfo {
    pub name: String,
    pub proto_type: i32,
    pub label: i32,
    pub is_packed: bool,
    pub nested_type_name: Option<String>,
    pub enum_type_name: Option<String>,
    pub type_display_name: Option<String>,
    pub enum_values: Box<[(i32, Box<str>)]>,
}

Per-field information extracted from a FieldDescriptorProto.

Fields

name: String

Field name (for annotations).

proto_type: i32

Proto type constant (matches Python’s FieldDescriptor.TYPE_* values).

label: i32

Label constant (LABEL_OPTIONAL = 1, LABEL_REQUIRED = 2, LABEL_REPEATED = 3).

is_packed: bool

true for repeated scalar fields encoded as packed (proto2 [packed=true] or proto3 implicit packing).

nested_type_name: Option<String>

Fully-qualified type name for MESSAGE / GROUP fields (e.g. “.pkg.Inner”).

enum_type_name: Option<String>

Enum type name for ENUM fields (for annotations).

type_display_name: Option<String>

Enum/message name (short) for annotations.

enum_values: Box<[(i32, Box<str>)]>

Numeric value → symbolic name table for ENUM fields. Sorted by numeric value for O(log n) lookup via binary_search_by_key. Empty for non-ENUM fields.

Trait Implementations

impl Clone for FieldInfo

fn clone(&self) -> FieldInfo

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for FieldInfo

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.