Struct Context 

pub struct Context<'a> { /* private fields */ }

Decoding/encoding context. Lifetime is typically tied to an instance of ContextOwned.

Implementations

impl<'a> Context<'a>

pub fn new( namespaces: &'a NamespaceMap, loaders: &'a TypeLoaderCollection, options: DecodingOptions, ) -> Self

Constructor. Prefer to use ContextOwned to avoid having to juggle NamespaceMap and TypeLoaderCollection yourself.

pub fn load_from_json( &self, node_id: &NodeId, stream: &mut JsonStreamReader<&mut dyn Read>, ) -> EncodingResult<ExtensionObject>

Try to load a type dynamically from JSON, returning an error if no matching type loader was found.

pub fn load_from_binary( &self, node_id: &NodeId, stream: &mut dyn Read, length: Option<usize>, ) -> EncodingResult<ExtensionObject>

Try to load a type dynamically from OPC-UA binary, returning an error if no matching type loader was found.

pub fn load_from_xml( &self, node_id: &NodeId, stream: &mut XmlStreamReader<&mut dyn Read>, name: &str, ) -> EncodingResult<ExtensionObject>

Try to load a type dynamically from XML, returning an error if no matching type loader was found.

pub fn options(&self) -> &DecodingOptions

Get the decoding options.

pub fn namespaces(&self) -> &'a NamespaceMap

Get the namespace map.

pub fn set_index_map(&mut self, index_map: &'a HashMap<u16, u16>)

Set the index map used for resolving namespace indices during XML decoding.

pub fn set_aliases(&mut self, aliases: &'a HashMap<String, String>)

Set the alias table used for resolving node ID aliases during XML decoding.

pub fn resolve_namespace_index( &self, index_in_node_set: u16, ) -> Result<u16, UninitializedIndex>

Resolve the given namespace index to the real, server namespace index. Used when loading nodeset files.

pub fn resolve_namespace_index_inverse( &self, index_in_server: u16, ) -> Result<u16, UninitializedIndex>

Look up namespace index in reverse, finding the index in the node set given the index in the server.

pub fn resolve_alias<'b>(&self, node_id_str: &'b str) -> &'b str

where 'a: 'b,

Resolve a node ID alias, if the alias table is registered. Only used for XML decoding when loading nodeset files.

pub fn resolve_alias_inverse<'b>(&self, node_id_str: &'b str) -> &'b str

where 'a: 'b,

Resolve a node ID alias in inverse, getting the alias value given the node ID.

pub fn with_zero_offset(&self) -> Cow<'_, Self>

Produce a copy of self with zero client_offset, or a borrow if the offset is already zero.

Trait Implementations

impl<'a> Clone for Context<'a>

fn clone(&self) -> Context<'a>

Returns a duplicate of the value.

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

Performs copy-assignment from source.