Module operation 

Enhanced operation framework with composability and validation support

This module provides the core framework for UPnP operations with advanced features:

• Composable operations that can be chained, batched, or made conditional
• Dual validation strategy (boundary vs comprehensive)
• Fluent builder pattern for operation construction
• Strong type safety with minimal boilerplate

Modules

macros

Declarative macros for UPnP operation and service definitions

Structs

ComposableOperation

A composable operation ready for execution

OperationBuilder

Builder for constructing UPnP operations with configuration

OperationMetadata

Metadata about a UPnP operation

Enums

ValidationError

Validation error types

ValidationLevel

Validation levels for operation parameters

Traits

SonosOperation

Base trait for all Sonos API operations (LEGACY)

UPnPOperation

Enhanced UPnP operation trait with composability support

Validate

Trait for types that can be validated

Functions

assert_derivable_arg_name

Compile-time guard rejecting request field names whose UPnP element name cannot be derived by capitalizing the first character.

capitalize_first

Capitalize the first character of a snake_case field name.

parse_sonos_bool

Parse a Sonos UPnP boolean argument out of a SOAP response body.

response_field

Read a named response argument and parse it, falling back to the type’s default when the argument is absent or unparseable.

response_string

Read a named response argument as an owned string, defaulting to empty.

response_text

Read the text content of a named argument out of a SOAP response body.

validate_channel

Validate a RenderingControl channel parameter.

xml_escape

Escape XML special characters in a string for safe SOAP payload interpolation.