SymbolProviderRegistry

Overview

SymbolProviderRegistry is a central registry management class which keeps track of the multiple symbol providers in the system. The primary role of the SymbolProviderRegistry is to synchronize the symbols supported by several symbol providers and maintain them in a sorted order. It ensures that only the common symbols across the system are taken into account by the application.

This class operates primarily on singleton methods to maintain and provide a single central registry.

Usage Example

from automata.symbol.base import ISymbolProvider, Symbol
from automata.context_providers.symbol_synchronization import SymbolProviderRegistry

# Define a custom symbol provider
class CustomSymbolProvider(ISymbolProvider):
    ...

custom_provider = CustomSymbolProvider()

# Register your custom provider
SymbolProviderRegistry.register_provider(custom_provider)

# Synchronize the symbols across all providers
SymbolProviderRegistry.synchronize()

# Get the sorted list of supported symbols
symbols = SymbolProviderRegistry.get_sorted_supported_symbols()

# Your code with the symbol
...

Limitations

SymbolProviderRegistry relies on the symbol providers in the system implementing the ISymbolProvider interface correctly. If a symbol provider provides incorrect or incomplete information about supported symbols, it may introduce errors in the sorted symbols list. Additionally, the registry assumes that all symbol providers will be registered before any get or synchronize operation is performed. If a new symbol provider is added after synchronization, it will not be considered until the next synchronization.

Follow-up Questions

  • How does adding a new symbol provider after synchronization affect the result? Is there a watch mechanism or notification setup in symbol providers when new symbols get added?

  • What precautions or considerations should be taken while implementing a custom symbol provider to ensure compatibility with SymbolProviderRegistry?