Module spvd_decode 

PVD (pvData) Type Introspection and Value Decoding

Implements parsing of PVAccess field descriptions and value decoding according to the pvData serialization specification.

Structs

FieldDesc

Field description (name + type)

PvdDecoder

PVD Decoder state

StructureDesc

Structure description with optional ID

Enums

DecodedValue

Decoded value

FieldType

Field type description

TypeCode

PVD type codes from the specification

Functions

extract_nt_scalar_value

Extract the “value” field from a decoded NTScalar structure

extract_subfield_desc

Extract a sub-field from a StructureDesc by dot-separated path. Returns the sub-field as an owned StructureDesc. For leaf (non-structure) fields, returns a single-field StructureDesc wrapping the matched field. Returns the full desc if path is empty.

format_compact_value

Compact display of decoded value for logging - shows only updated fields concisely

format_structure_desc

Format a structure description for display

format_structure_tree