Struct AttrPath 

pub struct AttrPath {
    pub tag_compression: Option<bool>,
    pub node: Option<u64>,
    pub endpoint: Option<u16>,
    pub cluster: Option<u32>,
    pub attr: Option<u32>,
    pub list_index: Option<Maybe<u16, AsNullable>>,
}

A path to an attribute in the Interaction Model.

Corresponds to the AttrPathIB TLV structure in the Interaction Model.

Fields

tag_compression: Option<bool>

EnableTagCompression per Matter Core spec. When set to true, the spec defines a “tag compression scheme” whereby omitted fields in this AttrPath should be inherited from the previous AttrPath in the same list (rather than treated as wildcards).

rs-matter parses this bit but does not act on it. Omitted fields are always treated as wildcards regardless of value.

This matches the de-facto behaviour of every other Matter implementation in the wild:

• chip’s AttributePathIB::Parser::ParsePath reads the bit and ignores its semantics, treating omitted = wildcard.
• matter.js explicitly leaves it unimplemented with a TODO comment “or likely remove it”.
• per https://github.com/project-chip/connectedhomeip/issues/29359, neither chip-tool nor Google’s controllers handle tag-compressed reports either, and the spec feature is widely expected to be removed rather than implemented.

If/when that landscape changes, real inheritance semantics would slot into PathExpanderIterator in the im::expand module.

node: Option<u64>

endpoint: Option<u16>

cluster: Option<u32>

attr: Option<u32>

list_index: Option<Maybe<u16, AsNullable>>

Implementations

impl AttrPath

pub const fn from_gp(path: &GenericPath) -> AttrPath

Create a new AttrPath from the provided GenericPath, filling all fields which are not provided with their default values.

pub const fn to_gp(&self) -> GenericPath

Convert this AttrPath to a GenericPath.

pub const fn is_wildcard(&self) -> bool

Return true, if the path is wildcard

Trait Implementations

impl Clone for AttrPath

fn clone(&self) -> AttrPath

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for AttrPath

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

Formats the value using the given formatter.

impl Default for AttrPath

fn default() -> AttrPath

Returns the “default value” for a type.

impl Eq for AttrPath

impl<'__from_tlv> FromTLV<'__from_tlv> for AttrPath

fn from_tlv(element: &TLVElement<'__from_tlv>) -> Result<AttrPath, Error>

Deserialize the type from a TLV-encoded element.

fn init_from_tlv(element: TLVElement<'__from_tlv>) -> impl Init<AttrPath, Error>

Generate an in-place initializer for the type that initializes the type from a TLV-encoded element.

fn nullable_from_tlv(element: &TLVElement<'a>) -> Result<Self, Error>

Deserialize the type from a TLV-encoded element.

fn init_nullable_from_tlv(element: TLVElement<'a>) -> impl Init<Self, Error>

Generate an in-place initializer for the type that initializes the type from a TLV-encoded element.

impl Hash for AttrPath

fn hash<__H>(&self, state: &mut __H)

where __H: Hasher,

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for AttrPath

fn eq(&self, other: &AttrPath) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for AttrPath

impl ToTLV for AttrPath

fn to_tlv<W>(&self, tag: &TLVTag, tw: W) -> Result<(), Error>

where W: TLVWrite,

Serialize the type to a TLV-encoded stream.

fn tlv_iter(&self, tag: TLVTag) -> impl Iterator<Item = Result<TLV<'_>, Error>>

Serialize the type as an iterator of TLV instances by potentially borrowing data from the type.

fn nullable_to_tlv<W>(&self, tag: &TLVTag, tw: W) -> Result<(), Error>

where W: TLVWrite,

Serialize the type to a TLV-encoded stream.

fn nullable_tlv_iter( &self, tag: TLVTag, ) -> impl Iterator<Item = Result<TLV<'_>, Error>>

Serialize the type as an iterator of TLV instances by potentially borrowing data from the type.

impl<'__from_tlv> TryFrom<&TLVElement<'__from_tlv>> for AttrPath

type Error = Error

The type returned in the event of a conversion error.

fn try_from( element: &TLVElement<'__from_tlv>, ) -> Result<AttrPath, <AttrPath as TryFrom<&TLVElement<'__from_tlv>>>::Error>

Performs the conversion.