dis-rs 0.13.0

An implementation of the Distributed Interactive Simulation protocol (IEEE-1278.1) in Rust. This main crate contains PDU implementations and facilities to read/write PDUs from Rust data structures to the wire format and vice versa. It supports versions 6 and 7 of the protocol.
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use crate::common::attribute::builder::AttributeBuilder;
use crate::common::model::{EntityId, PduBody, SimulationAddress};
use crate::common::{BodyInfo, Interaction};
use crate::enumerations::{AttributeActionCode, PduType, ProtocolVersion, VariableRecordType};
use crate::BodyRaw;
#[cfg(feature = "serde")]
use serde::{Deserialize, Serialize};

pub const BASE_ATTRIBUTE_BODY_LENGTH: u16 = 20;
pub const BASE_ATTRIBUTE_RECORD_SET_LENGTH: u16 = 8;
pub const BASE_ATTRIBUTE_RECORD_LENGTH_OCTETS: u16 = 6;

/// 5.3.6 Attribute PDU
///
/// 7.2.6 Attribute PDU
#[derive(Clone, Debug, Default, PartialEq)]
#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
pub struct Attribute {
    pub originating_simulation_address: SimulationAddress,
    pub record_pdu_type: PduType,
    pub record_protocol_version: ProtocolVersion,
    pub master_attribute_record_type: VariableRecordType,
    pub action_code: AttributeActionCode,
    pub attribute_record_sets: Vec<AttributeRecordSet>,
}

impl BodyRaw for Attribute {
    type Builder = AttributeBuilder;

    fn builder() -> AttributeBuilder {
        AttributeBuilder::new()
    }

    fn into_builder(self) -> AttributeBuilder {
        AttributeBuilder::new_from_body(self)
    }

    fn into_pdu_body(self) -> PduBody {
        PduBody::Attribute(self)
    }
}

impl BodyInfo for Attribute {
    fn body_length(&self) -> u16 {
        BASE_ATTRIBUTE_BODY_LENGTH
            + self
                .attribute_record_sets
                .iter()
                .map(|set| {
                    BASE_ATTRIBUTE_RECORD_SET_LENGTH
                        + set
                            .attribute_records
                            .iter()
                            .map(|record| {
                                BASE_ATTRIBUTE_RECORD_LENGTH_OCTETS
                                    + record.specific_fields.len() as u16
                            })
                            .sum::<u16>()
                })
                .sum::<u16>()
    }

    fn body_type(&self) -> PduType {
        PduType::Attribute
    }
}

impl Interaction for Attribute {
    fn originator(&self) -> Option<&EntityId> {
        None
    }

    fn receiver(&self) -> Option<&EntityId> {
        None
    }
}

/// 5.3.6.3
#[derive(Clone, Debug, PartialEq)]
#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
pub struct AttributeRecordSet {
    pub entity_id: EntityId,
    pub attribute_records: Vec<AttributeRecord>,
}

impl Default for AttributeRecordSet {
    fn default() -> Self {
        Self::new()
    }
}

impl AttributeRecordSet {
    #[must_use]
    pub fn new() -> Self {
        Self {
            entity_id: EntityId::default(),
            attribute_records: vec![],
        }
    }

    #[must_use]
    pub fn with_entity_id(mut self, entity_id: EntityId) -> Self {
        self.entity_id = entity_id;
        self
    }

    #[must_use]
    pub fn with_attribute_records(mut self, attribute_records: Vec<AttributeRecord>) -> Self {
        self.attribute_records = attribute_records;
        self
    }

    #[must_use]
    pub fn with_attribute_record(mut self, attribute_record: AttributeRecord) -> Self {
        self.attribute_records.push(attribute_record);
        self
    }
}

/// 6.2.10 Attribute record
#[derive(Clone, Debug, PartialEq)]
#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
pub struct AttributeRecord {
    pub record_type: VariableRecordType,
    pub specific_fields: Vec<u8>,
}

impl Default for AttributeRecord {
    fn default() -> Self {
        Self::new()
    }
}

impl AttributeRecord {
    #[must_use]
    pub fn new() -> Self {
        Self {
            record_type: VariableRecordType::default(),
            specific_fields: vec![],
        }
    }

    #[must_use]
    pub fn with_record_type(mut self, record_type: VariableRecordType) -> Self {
        self.record_type = record_type;
        self
    }

    #[must_use]
    pub fn with_specific_fields(mut self, specific_fields: Vec<u8>) -> Self {
        self.specific_fields = specific_fields;
        self
    }
}