Crate hiroz_schema 

ROS 2 Type Description Schema

This crate provides the canonical schema types for ROS 2 type descriptions, used by hiroz for:

• Type hash (RIHS01) computation
• Type description service wire format
• Dynamic message schema conversion
• Python binding type ID mapping

The TypeDescription type matches the ROS 2 type_description_interfaces exactly, making it the single source of truth for type information after parsing.

Structs

FieldDescription

Field description in a type

FieldTypeDescription

Field type description with type ID

TypeDescription

Type description for a single message type

TypeDescriptionMsg

ROS2 TypeDescription message structure

TypeHash

RIHS01 type hash (32 bytes)

TypeId

Type ID constants matching ROS 2 RIHS01 specification

Functions

calculate_hash

Calculate RIHS01 hash for a TypeDescriptionMsg

to_hash_version

Convert TypeDescriptionMsg to hash-computation version (excludes default_value)

to_ros2_json

Serialize to ROS2-compatible JSON format