Struct MsgField 

pub struct MsgField {
    pub name: String,
    pub type_ref: MsgTypeRef,
    pub is_array: bool,
    pub array_size: Option<usize>,
    pub string_max_len: Option<usize>,
    pub description: String,
}

Fields

name: String

type_ref: MsgTypeRef

is_array: bool

array_size: Option<usize>

Fixed array size (e.g. 9 for float32[9]). None means unbounded (T[]).

string_max_len: Option<usize>

Upper bound for string<=N / wstring<=N fields. None when not declared. Preserved so MCP JSON Schema can emit maxLength.

description: String

Trailing-comment annotation from the .msg line, e.g. # in metres or # range [0, 1]. Empty when there was no comment. Standard ROS messages use these for units / value ranges; we propagate them to MCP description because they give an LLM real semantic hints about the field.

Trait Implementations

impl Clone for MsgField

fn clone(&self) -> MsgField

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for MsgField

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

Formats the value using the given formatter.