output.txt

=== DIRECTORY TREE (INCLUDED ONLY) ===
gotstate/
    tests/
        unit/
    gotstate/
        runtime/
        core/
        types/
        extensions/
        persistence/

=== PACKED FILES ===

--- START OF FILE: /home/atomik/src/gotstate/tests/__init__.py ---

--- END OF FILE: /home/atomik/src/gotstate/tests/__init__.py ---

--- START OF FILE: /home/atomik/src/gotstate/tests/unit/__init__.py ---

--- END OF FILE: /home/atomik/src/gotstate/tests/unit/__init__.py ---

--- START OF FILE: /home/atomik/src/gotstate/gotstate/__init__.py ---
"""gotstate: UML-compliant Hierarchical Finite State Machine (HFSM) implementation

This package provides a robust implementation of hierarchical state machines following
UML state machine semantics.

Responsibilities:
    - State machine definition and execution
    - Event processing and transition management
    - Hierarchical state composition 
    - Parallel region handling
    - History state tracking
    - Runtime validation

Interactions:
    - Client code through public API
    - Python type system for static/runtime type checking
    - Operating system for concurrency primitives
    - Storage systems for persistence
    - Logging system for diagnostics

Cross-cutting Concerns:
    Thread Safety:
        - All public APIs are thread-safe
        - Internal state protected by appropriate locks
        - Documented thread safety guarantees per component

    Error Handling:
        - Structured error hierarchy
        - Consistent error reporting
        - Clean error recovery paths

    Logging:
        - Structured logging format
        - Configurable verbosity levels
        - Performance impact minimized

    Performance:
        - O(1) state lookup where possible
        - Bounded memory usage
        - Predictable latency

    Security:
        - Input validation on all public APIs
        - Safe serialization/deserialization
        - Protected internal state
"""

__version__ = "0.1.0"

--- END OF FILE: /home/atomik/src/gotstate/gotstate/__init__.py ---

--- START OF FILE: /home/atomik/src/gotstate/gotstate/runtime/__init__.py ---
"""
Runtime package for execution and monitoring.

Architecture:
- Manages event execution and run-to-completion
- Handles time and change event scheduling
- Provides monitoring and metrics
- Coordinates with core components
- Maintains execution guarantees

Design Patterns:
- State Pattern for execution
- Publisher/Subscriber for monitoring
- Factory Pattern for creation
- Builder Pattern for configuration
- Singleton Pattern for schedulers

Security:
- Execution isolation
- Resource monitoring
- Timer management
- Event validation
- Extension boundaries

Cross-cutting:
- Error handling with recovery
- Performance optimization
- Execution metrics
- Thread safety
"""

from .executor import Executor
from .scheduler import Scheduler
from .monitor import Monitor

__all__ = ["Executor", "Scheduler", "Monitor"]

--- END OF FILE: /home/atomik/src/gotstate/gotstate/runtime/__init__.py ---

--- START OF FILE: /home/atomik/src/gotstate/gotstate/runtime/monitor.py ---
"""
State machine monitoring and metrics management.

Architecture:
- Provides introspection capabilities
- Emits state machine events
- Tracks execution metrics
- Coordinates with all modules
- Maintains monitoring boundaries

Design Patterns:
- Observer Pattern: State monitoring
- Publisher/Subscriber: Event emission
- Strategy Pattern: Metric collection
- Decorator Pattern: Monitoring hooks
- Chain of Responsibility: Event filtering

Responsibilities:
1. State Introspection
   - Current state access
   - Active transitions
   - Event status
   - Machine configuration
   - Runtime metrics

2. Event Emission
   - State changes
   - Transition events
   - Event handling
   - Error conditions
   - Resource usage

3. Metric Collection
   - Execution timing
   - Resource usage
   - Event statistics
   - Error rates
   - Performance data

4. Monitoring Control
   - Filter configuration
   - Metric selection
   - Event filtering
   - Resource limits
   - Data retention

Security:
- Data protection
- Access control
- Resource limits
- Event filtering

Cross-cutting:
- Error handling
- Performance impact
- Resource usage
- Thread safety

Dependencies:
- machine.py: Machine monitoring
- executor.py: Execution metrics
- scheduler.py: Timer metrics
- event.py: Event monitoring
"""

from typing import Optional, Dict, List, Set, Any
from enum import Enum, auto
from dataclasses import dataclass
from threading import Lock, Event
from queue import Queue


class MonitoringLevel(Enum):
    """Defines monitoring detail levels.
    
    Used to control monitoring granularity and resource usage.
    """
    MINIMAL = auto()   # Basic state changes only
    NORMAL = auto()    # Standard monitoring level
    DETAILED = auto()  # Detailed metrics and events
    DEBUG = auto()     # Full debugging information


class MetricType(Enum):
    """Defines types of metrics to collect.
    
    Used to categorize and organize monitoring data.
    """
    STATE = auto()      # State-related metrics
    TRANSITION = auto() # Transition timing/counts
    EVENT = auto()      # Event processing stats
    RESOURCE = auto()   # Resource utilization
    ERROR = auto()      # Error statistics


class Monitor:
    """Provides state machine monitoring and metrics.
    
    The Monitor class implements the Observer pattern to track
    state machine behavior and collect performance metrics.
    
    Class Invariants:
    1. Must maintain monitoring boundaries
    2. Must preserve event order
    3. Must track all metrics
    4. Must control resource usage
    5. Must handle concurrent access
    6. Must filter sensitive data
    7. Must maintain history
    8. Must support queries
    9. Must minimize impact
    10. Must enforce limits
    
    Design Patterns:
    - Observer: Monitors state machine
    - Publisher: Emits monitoring events
    - Strategy: Implements policies
    - Decorator: Adds monitoring
    - Chain: Filters events
    
    Data Structures:
    - Queue for events
    - Map for metrics
    - Set for subscribers
    - Tree for filtering
    - Ring buffer for history
    
    Algorithms:
    - Event filtering
    - Metric aggregation
    - Data retention
    - Resource tracking
    - Query processing
    
    Threading/Concurrency Guarantees:
    1. Thread-safe monitoring
    2. Atomic metric updates
    3. Synchronized event emission
    4. Safe concurrent access
    5. Lock-free inspection
    6. Mutex protection
    
    Performance Characteristics:
    1. O(1) event emission
    2. O(log n) metric updates
    3. O(f) filtering where f is filter count
    4. O(s) subscription where s is subscriber count
    5. O(q) querying where q is query complexity
    
    Resource Management:
    1. Bounded memory usage
    2. Controlled event rate
    3. Data retention policies
    4. Automatic cleanup
    5. Load shedding
    """
    pass


class StateMonitor:
    """Monitors state machine state changes.
    
    StateMonitor tracks state configurations and transitions
    with minimal performance impact.
    
    Class Invariants:
    1. Must track all states
    2. Must detect changes
    3. Must maintain history
    4. Must minimize impact
    
    Design Patterns:
    - Observer: Monitors states
    - Strategy: Implements tracking
    - Command: Encapsulates queries
    
    Threading/Concurrency Guarantees:
    1. Thread-safe tracking
    2. Atomic updates
    3. Safe concurrent access
    
    Performance Characteristics:
    1. O(1) state updates
    2. O(h) history tracking where h is history size
    3. O(q) querying where q is query complexity
    """
    pass


class EventMonitor:
    """Monitors event processing and metrics.
    
    EventMonitor tracks event handling performance and
    statistics across the state machine.
    
    Class Invariants:
    1. Must track all events
    2. Must collect metrics
    3. Must maintain order
    4. Must support filtering
    
    Design Patterns:
    - Observer: Monitors events
    - Strategy: Implements tracking
    - Chain: Filters events
    
    Threading/Concurrency Guarantees:
    1. Thread-safe monitoring
    2. Atomic updates
    3. Safe concurrent access
    
    Performance Characteristics:
    1. O(1) event tracking
    2. O(f) filtering where f is filter count
    3. O(m) metric updates where m is metric count
    """
    pass


class MetricCollector:
    """Collects and aggregates performance metrics.
    
    MetricCollector implements efficient metric collection
    and aggregation with minimal overhead.
    
    Class Invariants:
    1. Must collect accurately
    2. Must aggregate efficiently
    3. Must maintain history
    4. Must support queries
    
    Design Patterns:
    - Strategy: Implements collection
    - Observer: Monitors sources
    - Command: Encapsulates queries
    
    Threading/Concurrency Guarantees:
    1. Thread-safe collection
    2. Atomic updates
    3. Safe concurrent access
    
    Performance Characteristics:
    1. O(1) metric updates
    2. O(a) aggregation where a is metric count
    3. O(q) querying where q is query complexity
    """
    pass


class MonitoringFilter:
    """Filters monitoring events and metrics.
    
    MonitoringFilter implements configurable filtering of
    monitoring data based on policies.
    
    Class Invariants:
    1. Must filter correctly
    2. Must maintain policies
    3. Must be configurable
    4. Must minimize impact
    
    Design Patterns:
    - Chain: Processes filters
    - Strategy: Implements policies
    - Command: Encapsulates rules
    
    Threading/Concurrency Guarantees:
    1. Thread-safe filtering
    2. Atomic updates
    3. Safe concurrent access
    
    Performance Characteristics:
    1. O(1) policy checks
    2. O(f) filtering where f is filter count
    3. O(r) rule evaluation where r is rule count
    """
    pass


class MonitoringSubscriber:
    """Manages monitoring event subscriptions.
    
    MonitoringSubscriber implements the Publisher/Subscriber
    pattern for monitoring event distribution.
    
    Class Invariants:
    1. Must track subscribers
    2. Must maintain topics
    3. Must deliver events
    4. Must handle failures
    
    Design Patterns:
    - Publisher: Distributes events
    - Observer: Notifies subscribers
    - Strategy: Implements delivery
    
    Threading/Concurrency Guarantees:
    1. Thread-safe subscription
    2. Atomic delivery
    3. Safe concurrent access
    
    Performance Characteristics:
    1. O(1) subscription
    2. O(s) delivery where s is subscriber count
    3. O(t) topic management where t is topic count
    """
    pass

--- END OF FILE: /home/atomik/src/gotstate/gotstate/runtime/monitor.py ---

--- START OF FILE: /home/atomik/src/gotstate/gotstate/runtime/scheduler.py ---
"""
Time and change event scheduling management.

Architecture:
- Manages time and change events
- Maintains timer consistency
- Coordinates with Event for queuing
- Integrates with Executor for processing
- Handles timer interruptions

Design Patterns:
- Singleton Pattern: Timer management
- Observer Pattern: Time events
- Command Pattern: Scheduled actions
- Strategy Pattern: Scheduling policies
- Chain of Responsibility: Event handling

Responsibilities:
1. Time Events
   - Relative time events
   - Absolute time events
   - Timer management
   - Timer cancellation
   - Timer interruption

2. Change Events
   - Change detection
   - State condition evaluation
   - Change event triggers
   - Condition monitoring
   - Event generation

3. Timer Management
   - Timer creation
   - Timer cancellation
   - Timer interruption
   - Timer state preservation
   - Timer recovery

4. Event Coordination
   - Event queuing
   - Priority handling
   - Order preservation
   - Timer synchronization
   - Resource management

Security:
- Timer isolation
- Resource limits
- Event validation
- State protection

Cross-cutting:
- Error handling
- Performance monitoring
- Timer metrics
- Thread safety

Dependencies:
- event.py: Event processing
- executor.py: Event execution
- monitor.py: Timer monitoring
- machine.py: Machine context
"""

from typing import Optional, Dict, List, Set, Any
from enum import Enum, auto
from dataclasses import dataclass
from threading import Lock, Timer, Event
from queue import PriorityQueue
from time import monotonic


class TimerStatus(Enum):
    """Defines the possible states of a timer.
    
    Used to track timer lifecycle and coordinate operations.
    """
    IDLE = auto()      # Timer not started
    ACTIVE = auto()    # Timer running
    PAUSED = auto()    # Timer temporarily paused
    CANCELLED = auto() # Timer cancelled
    EXPIRED = auto()   # Timer completed


class TimerKind(Enum):
    """Defines the different types of timers.
    
    Used to determine timer behavior and scheduling.
    """
    RELATIVE = auto() # After X time units
    ABSOLUTE = auto() # At specific time
    PERIODIC = auto() # Repeating interval


class Scheduler:
    """Manages time and change event scheduling.
    
    The Scheduler class implements the Singleton pattern to provide
    centralized timer and change event management.
    
    Class Invariants:
    1. Must maintain timer consistency
    2. Must preserve event order
    3. Must handle interruptions
    4. Must manage resources
    5. Must track timer state
    6. Must detect changes
    7. Must coordinate events
    8. Must handle cancellation
    9. Must maintain metrics
    10. Must enforce limits
    
    Design Patterns:
    - Singleton: Centralizes scheduling
    - Observer: Monitors events
    - Command: Encapsulates actions
    - Strategy: Implements policies
    - Chain: Processes events
    
    Data Structures:
    - Priority queue for timers
    - Set for active timers
    - Map for timer state
    - Queue for change events
    - Tree for conditions
    
    Algorithms:
    - Timer scheduling
    - Change detection
    - Event ordering
    - Resource allocation
    - State tracking
    
    Threading/Concurrency Guarantees:
    1. Thread-safe scheduling
    2. Atomic timer operations
    3. Synchronized state access
    4. Safe concurrent events
    5. Lock-free inspection
    6. Mutex protection
    
    Performance Characteristics:
    1. O(1) timer creation
    2. O(log n) scheduling
    3. O(1) cancellation
    4. O(c) change detection where c is condition count
    5. O(e) event coordination where e is event count
    
    Resource Management:
    1. Bounded timer count
    2. Controlled thread usage
    3. Memory pooling
    4. Automatic cleanup
    5. Load balancing
    """
    pass


class TimerManager:
    """Manages timer lifecycle and operations.
    
    TimerManager implements timer creation, tracking, and cleanup
    with proper synchronization.
    
    Class Invariants:
    1. Must track all timers
    2. Must handle interruptions
    3. Must preserve state
    4. Must cleanup resources
    
    Design Patterns:
    - Factory: Creates timers
    - Observer: Monitors timers
    - Command: Encapsulates operations
    
    Threading/Concurrency Guarantees:
    1. Thread-safe management
    2. Atomic operations
    3. Safe concurrent access
    
    Performance Characteristics:
    1. O(1) timer tracking
    2. O(n) cleanup where n is timer count
    3. O(1) state updates
    """
    pass


class ChangeDetector:
    """Monitors and detects state changes.
    
    ChangeDetector implements efficient change detection and
    event generation for monitored conditions.
    
    Class Invariants:
    1. Must detect all changes
    2. Must prevent missed events
    3. Must maintain history
    4. Must track conditions
    
    Design Patterns:
    - Observer: Monitors changes
    - Strategy: Implements detection
    - Command: Encapsulates events
    
    Threading/Concurrency Guarantees:
    1. Thread-safe detection
    2. Atomic updates
    3. Safe concurrent access
    
    Performance Characteristics:
    1. O(1) change detection
    2. O(c) condition evaluation where c is condition count
    3. O(h) history tracking where h is history size
    """
    pass


class EventCoordinator:
    """Coordinates scheduled events and processing.
    
    EventCoordinator manages event ordering and coordination
    with the execution system.
    
    Class Invariants:
    1. Must preserve order
    2. Must handle priorities
    3. Must coordinate timing
    4. Must manage resources
    
    Design Patterns:
    - Mediator: Coordinates events
    - Observer: Monitors processing
    - Strategy: Implements policies
    
    Threading/Concurrency Guarantees:
    1. Thread-safe coordination
    2. Atomic operations
    3. Safe concurrent access
    
    Performance Characteristics:
    1. O(log n) event ordering
    2. O(p) priority handling where p is priority count
    3. O(r) resource management where r is resource count
    """
    pass


class SchedulerMonitor:
    """Monitors scheduler operations and metrics.
    
    SchedulerMonitor tracks scheduling performance and
    resource utilization.
    
    Class Invariants:
    1. Must track metrics
    2. Must detect issues
    3. Must maintain history
    4. Must support queries
    
    Design Patterns:
    - Observer: Monitors scheduler
    - Strategy: Implements policies
    - Command: Encapsulates queries
    
    Threading/Concurrency Guarantees:
    1. Thread-safe monitoring
    2. Atomic updates
    3. Safe concurrent access
    
    Performance Characteristics:
    1. O(1) metric updates
    2. O(q) query execution where q is query complexity
    3. O(h) history tracking where h is history size
    """
    pass

--- END OF FILE: /home/atomik/src/gotstate/gotstate/runtime/scheduler.py ---

--- START OF FILE: /home/atomik/src/gotstate/gotstate/runtime/executor.py ---
"""
Event execution and run-to-completion management.

Architecture:
- Enforces run-to-completion semantics
- Manages transition execution
- Handles concurrent operations
- Coordinates with Event for processing
- Integrates with Monitor for metrics

Design Patterns:
- State Pattern: Execution states
- Command Pattern: Execution units
- Observer Pattern: Execution events
- Strategy Pattern: Execution policies
- Chain of Responsibility: Event processing

Responsibilities:
1. Run-to-Completion
   - Event processing semantics
   - Event queuing
   - Transition atomicity
   - Order preservation
   - Re-entrancy handling

2. Transition Execution
   - Guard evaluation
   - Action execution
   - State changes
   - Error recovery
   - Resource cleanup

3. Concurrency
   - Parallel execution
   - Synchronization
   - Resource management
   - Deadlock prevention
   - Race condition handling

4. Error Management
   - Execution failures
   - Partial completion
   - State recovery
   - Resource cleanup
   - Error propagation

Security:
- Execution isolation
- Resource boundaries
- Action sandboxing
- State protection

Cross-cutting:
- Error handling
- Performance monitoring
- Execution metrics
- Thread safety

Dependencies:
- event.py: Event processing
- transition.py: Transition handling
- monitor.py: Execution monitoring
- machine.py: Machine context
"""

from typing import Optional, Dict, List, Set, Any
from enum import Enum, auto
from dataclasses import dataclass
from threading import Lock, RLock, Event, Condition


class ExecutionStatus(Enum):
    """Defines the possible states of execution.
    
    Used to track execution progress and coordinate operations.
    """
    IDLE = auto()        # No execution in progress
    EXECUTING = auto()   # Currently executing
    SUSPENDED = auto()   # Temporarily suspended
    ROLLING_BACK = auto() # Handling failure
    FAILED = auto()      # Execution failed


class ExecutionMode(Enum):
    """Defines execution modes for the executor.
    
    Used to determine execution behavior and policies.
    """
    SYNCHRONOUS = auto()  # Execute in calling thread
    ASYNCHRONOUS = auto() # Execute in separate thread
    PARALLEL = auto()     # Execute in thread pool


class Executor:
    """Manages event execution with run-to-completion semantics.
    
    The Executor class implements the Command pattern to manage
    execution units while enforcing run-to-completion semantics.
    
    Class Invariants:
    1. Must maintain run-to-completion semantics
    2. Must preserve event ordering
    3. Must ensure transition atomicity
    4. Must handle concurrent execution
    5. Must manage resources properly
    6. Must recover from failures
    7. Must prevent deadlocks
    8. Must maintain metrics
    9. Must isolate execution
    10. Must enforce boundaries
    
    Design Patterns:
    - Command: Encapsulates execution units
    - State: Manages execution states
    - Observer: Notifies of execution
    - Strategy: Implements policies
    - Chain: Processes events
    
    Data Structures:
    - Queue for pending executions
    - Set for active executions
    - Map for execution status
    - Graph for dependencies
    - Stack for rollback
    
    Algorithms:
    - Dependency resolution
    - Resource allocation
    - Deadlock detection
    - Rollback planning
    - Metrics collection
    
    Threading/Concurrency Guarantees:
    1. Thread-safe execution
    2. Atomic transitions
    3. Synchronized resources
    4. Safe concurrent access
    5. Lock-free inspection
    6. Mutex protection
    
    Performance Characteristics:
    1. O(1) status checks
    2. O(log n) scheduling
    3. O(d) dependency check where d is dependency count
    4. O(r) rollback where r is operation count
    5. O(m) metrics update where m is metric count
    
    Resource Management:
    1. Bounded thread usage
    2. Controlled memory allocation
    3. Resource pooling
    4. Automatic cleanup
    5. Load balancing
    """
    pass


class ExecutionUnit:
    """Represents an atomic unit of execution.
    
    ExecutionUnit implements the Command pattern to encapsulate
    a single execution operation with rollback capability.
    
    Class Invariants:
    1. Must be atomic
    2. Must support rollback
    3. Must track resources
    4. Must maintain metrics
    
    Design Patterns:
    - Command: Encapsulates operation
    - Memento: Supports rollback
    - Observer: Reports progress
    
    Threading/Concurrency Guarantees:
    1. Thread-safe execution
    2. Atomic operations
    3. Safe concurrent access
    
    Performance Characteristics:
    1. O(1) execution
    2. O(r) rollback where r is state size
    3. O(m) metrics where m is metric count
    """
    pass


class ExecutionContext:
    """Maintains context for execution units.
    
    ExecutionContext provides isolation and resource tracking
    for execution unit operations.
    
    Class Invariants:
    1. Must maintain isolation
    2. Must track resources
    3. Must support cleanup
    4. Must preserve state
    
    Design Patterns:
    - Context: Provides execution environment
    - Memento: Preserves state
    - Observer: Monitors resources
    
    Threading/Concurrency Guarantees:
    1. Thread-safe context
    2. Atomic state updates
    3. Safe concurrent access
    
    Performance Characteristics:
    1. O(1) context switches
    2. O(r) resource tracking where r is resource count
    3. O(s) state management where s is state size
    """
    pass


class ExecutionScheduler:
    """Schedules execution units for processing.
    
    ExecutionScheduler manages the ordering and timing of
    execution unit processing.
    
    Class Invariants:
    1. Must preserve order
    2. Must handle priorities
    3. Must prevent starvation
    4. Must manage resources
    
    Design Patterns:
    - Strategy: Implements scheduling
    - Observer: Monitors execution
    - Chain: Processes units
    
    Threading/Concurrency Guarantees:
    1. Thread-safe scheduling
    2. Atomic updates
    3. Safe concurrent access
    
    Performance Characteristics:
    1. O(log n) scheduling
    2. O(p) priority management where p is priority count
    3. O(r) resource allocation where r is resource count
    """
    pass


class ExecutionMonitor:
    """Monitors execution progress and metrics.
    
    ExecutionMonitor tracks execution status and collects
    performance metrics.
    
    Class Invariants:
    1. Must track progress
    2. Must collect metrics
    3. Must detect issues
    4. Must maintain history
    
    Design Patterns:
    - Observer: Monitors execution
    - Strategy: Implements policies
    - Command: Encapsulates queries
    
    Threading/Concurrency Guarantees:
    1. Thread-safe monitoring
    2. Atomic updates
    3. Safe concurrent access
    
    Performance Characteristics:
    1. O(1) status updates
    2. O(m) metric collection where m is metric count
    3. O(h) history tracking where h is history size
    """
    pass

--- END OF FILE: /home/atomik/src/gotstate/gotstate/runtime/executor.py ---

--- START OF FILE: /home/atomik/src/gotstate/gotstate/core/state.py ---
"""
State class and hierarchy management.

Architecture:
- Implements hierarchical state structure using Composite pattern
- Manages state data with isolation guarantees
- Enforces state invariants and validation
- Coordinates with Region for parallel state execution
- Preserves history state information

Design Patterns:
- Composite Pattern: Hierarchical state structure
- Observer Pattern: State change notifications
- Memento Pattern: History state preservation
- Builder Pattern: State configuration
- Visitor Pattern: State traversal

Responsibilities:
1. State Hierarchy
   - Parent/child relationships
   - Composite state management
   - Submachine state handling
   - State redefinition support

2. State Data
   - Data isolation between states
   - Parent state data inheritance
   - Parallel region data management
   - History state data preservation

3. State Behavior
   - Entry/exit actions
   - Do-activity execution
   - Internal transitions
   - State invariants

4. State Configuration
   - Initial/final states
   - History state types
   - Entry/exit points
   - Choice/junction pseudostates

Security:
- State data isolation
- Action execution boundaries
- Resource usage monitoring
- Validation at state boundaries

Cross-cutting:
- Error handling for state operations
- Performance optimization for traversal
- Monitoring of state changes
- Thread safety for parallel regions

Dependencies:
- region.py: Parallel region coordination
- transition.py: State change management
- event.py: Event processing integration
- machine.py: State machine context
"""

from typing import Optional, Dict, List, Set
from dataclasses import dataclass
from enum import Enum, auto


class StateType(Enum):
    """Defines the different types of states in the hierarchical state machine.
    
    Used to distinguish between regular states, pseudostates, and special state types
    for proper behavioral implementation and validation.
    """
    SIMPLE = auto()          # Leaf state with no substates
    COMPOSITE = auto()       # State containing substates
    SUBMACHINE = auto()      # Reference to another state machine
    INITIAL = auto()         # Initial pseudostate
    FINAL = auto()          # Final state
    CHOICE = auto()         # Dynamic conditional branching
    JUNCTION = auto()       # Static conditional branching
    SHALLOW_HISTORY = auto() # Remembers only direct substate
    DEEP_HISTORY = auto()    # Remembers full substate configuration
    ENTRY_POINT = auto()    # Named entry point
    EXIT_POINT = auto()     # Named exit point
    TERMINATE = auto()      # Terminates entire state machine


class State:
    """Represents a state in a hierarchical state machine.
    
    The State class implements the Composite pattern to manage the hierarchical
    structure of states. It maintains parent-child relationships, handles state
    data with proper isolation, and coordinates with parallel regions.
    
    Class Invariants:
    1. A state must have a unique identifier within its parent's scope
    2. A state's type must not change after initialization
    3. Parent-child relationships must form a directed acyclic graph (DAG)
    4. Initial pseudostates must have exactly one outgoing transition
    5. History states must belong to a composite state
    6. Entry/exit points must have valid connections
    7. State data must remain isolated between parallel regions
    8. Parent state data must be accessible to child states
    9. Active do-activities must be properly tracked and managed
    10. State configuration must be valid according to UML state machine rules
    
    Design Patterns:
    - Composite: Hierarchical state structure using parent-child relationships
    - Observer: Notifies observers of state entry/exit and data changes
    - Memento: Preserves and restores history state information
    - Builder: Constructs complex state configurations
    - Visitor: Enables traversal of state hierarchy
    - Command: Encapsulates entry/exit actions and do-activities
    
    Data Structures:
    - Dictionary for child state lookup (O(1) access)
    - Set for active regions (fast membership testing)
    - Queue for pending events (FIFO processing)
    - Tree for hierarchical traversal
    - Stack for history state tracking
    
    Algorithms:
    - Depth-first search for state traversal
    - Topological sort for transition execution order
    - LCA (Lowest Common Ancestor) for transition path computation
    
    Threading/Concurrency Guarantees:
    1. Thread-safe state data access within parallel regions
    2. Atomic state configuration changes
    3. Safe concurrent execution of do-activities
    4. Synchronized access to history state information
    5. Lock-free read access to state configuration
    6. Mutex protection for state data modifications
    
    Performance Characteristics:
    1. O(1) child state lookup
    2. O(log n) ancestor traversal
    3. O(1) state type checking
    4. O(k) parallel region synchronization where k is region count
    5. O(d) history state restoration where d is hierarchy depth
    
    Resource Management:
    1. Bounded memory usage for state data
    2. Controlled resource allocation for do-activities
    3. Limited thread pool for parallel regions
    4. Cached state configuration for fast access
    5. Pooled event objects for reduced allocation
    """
    pass


class CompositeState(State):
    """Represents a composite state that can contain other states.
    
    CompositeState extends the base State class to implement the Composite pattern,
    managing a collection of child states and their relationships.
    
    Class Invariants:
    1. Must maintain valid parent-child relationships
    2. Must have at most one initial state per region
    3. Must properly manage parallel regions
    4. Must maintain history state consistency
    5. Must enforce state naming uniqueness within scope
    
    Design Patterns:
    - Composite: Manages child state hierarchy
    - Factory: Creates appropriate state types
    - Observer: Notifies of child state changes
    
    Data Structures:
    - Dictionary of child states by name
    - List of parallel regions
    - Map of history states
    - Set of active substates
    
    Threading/Concurrency Guarantees:
    1. Thread-safe child state access
    2. Atomic region activation/deactivation
    3. Synchronized history state updates
    4. Safe concurrent region execution
    
    Performance Characteristics:
    1. O(1) child state lookup
    2. O(r) region synchronization where r is region count
    3. O(h) history state management where h is history count
    """
    pass


class PseudoState(State):
    """Base class for all pseudostates in the state machine.
    
    PseudoState provides common functionality for special states that control
    execution flow but don't represent actual system states.
    
    Class Invariants:
    1. Must have valid connections according to type
    2. Must not contain substates
    3. Must follow UML pseudostate semantics
    4. Must maintain transition consistency
    
    Design Patterns:
    - Template Method: Defines pseudostate behavior
    - Strategy: Implements type-specific logic
    - Chain of Responsibility: Handles transition routing
    
    Threading/Concurrency Guarantees:
    1. Thread-safe transition execution
    2. Atomic decision point evaluation
    3. Safe concurrent access to guard conditions
    
    Performance Characteristics:
    1. O(1) type checking
    2. O(t) transition evaluation where t is transition count
    3. O(g) guard condition evaluation where g is guard count
    """
    pass


class HistoryState(PseudoState):
    """Represents history pseudostates (shallow and deep) in the state machine.
    
    HistoryState maintains the historical state configuration of its parent
    composite state, enabling state restoration.
    
    Class Invariants:
    1. Must belong to a composite state
    2. Must maintain valid history configuration
    3. Must preserve parallel region history
    4. Must handle default transitions
    
    Design Patterns:
    - Memento: Stores and restores state configuration
    - Observer: Tracks state configuration changes
    - Strategy: Implements history type behavior
    
    Data Structures:
    - Stack for state configuration history
    - Map for region history tracking
    - Set for active state tracking
    
    Threading/Concurrency Guarantees:
    1. Thread-safe history updates
    2. Atomic configuration restoration
    3. Safe concurrent region history tracking
    
    Performance Characteristics:
    1. O(1) history type checking
    2. O(d) configuration storage where d is hierarchy depth
    3. O(r) region history management where r is region count
    """
    pass


class ConnectionPointState(PseudoState):
    """Represents entry and exit points for states.
    
    ConnectionPointState manages named entry and exit points that provide
    interfaces for transitions into and out of composite states.
    
    Class Invariants:
    1. Must have valid connection to parent state
    2. Must maintain transition consistency
    3. Must have unique name within parent scope
    4. Must enforce valid transition paths
    
    Design Patterns:
    - Facade: Provides clean interface to state
    - Mediator: Coordinates transition routing
    - Chain of Responsibility: Handles transition paths
    
    Threading/Concurrency Guarantees:
    1. Thread-safe transition routing
    2. Atomic path validation
    3. Safe concurrent access
    
    Performance Characteristics:
    1. O(1) point type checking
    2. O(p) path validation where p is path length
    3. O(t) transition routing where t is transition count
    """
    pass


class ChoiceState(PseudoState):
    """Represents a dynamic conditional branch point.
    
    ChoiceState evaluates guard conditions at runtime to determine the
    transition path, enabling dynamic behavioral decisions.
    
    Class Invariants:
    1. Must have at least one outgoing transition
    2. Must evaluate guards in defined order
    3. Must have valid default transition
    4. Must maintain consistent decision state
    
    Design Patterns:
    - Strategy: Implements guard evaluation
    - Chain of Responsibility: Processes guards
    - Command: Encapsulates guard conditions
    
    Data Structures:
    - Priority queue for guard evaluation
    - Decision tree for condition checking
    
    Threading/Concurrency Guarantees:
    1. Thread-safe guard evaluation
    2. Atomic decision making
    3. Safe concurrent condition access
    
    Performance Characteristics:
    1. O(g) guard evaluation where g is guard count
    2. O(log g) guard prioritization
    3. O(d) decision tree traversal where d is tree depth
    """
    pass


class JunctionState(PseudoState):
    """Represents a static conditional branch point.
    
    JunctionState implements static conditional branching based on
    guard conditions that are evaluated when the junction is reached.
    
    Class Invariants:
    1. Must have at least one outgoing transition
    2. Must evaluate guards in static order
    3. Must have valid default transition
    4. Must maintain transition consistency
    
    Design Patterns:
    - Strategy: Implements branching logic
    - Chain of Responsibility: Processes conditions
    - Command: Encapsulates static decisions
    
    Threading/Concurrency Guarantees:
    1. Thread-safe transition selection
    2. Atomic path determination
    3. Safe concurrent access
    
    Performance Characteristics:
    1. O(t) transition evaluation where t is transition count
    2. O(g) guard checking where g is guard count
    3. O(1) default transition access
    """
    pass

--- END OF FILE: /home/atomik/src/gotstate/gotstate/core/state.py ---

--- START OF FILE: /home/atomik/src/gotstate/gotstate/core/__init__.py ---
"""
Core package providing the fundamental HFSM functionality.

Architecture:
- Implements hierarchical state machine core components
- Manages state hierarchy, transitions, events, and regions
- Coordinates between components through machine orchestration

Design Patterns:
- Composite Pattern for state hierarchy
- Observer Pattern for state changes
- Command Pattern for transitions
- Strategy Pattern for event processing
- Mediator Pattern for coordination

Security:
- Input validation at module boundaries
- State data isolation
- Resource usage monitoring
- Type system safety checks

Cross-cutting:
- Error handling with consistent propagation
- Performance optimization for state operations
- Monitoring hooks for metrics
- Testing boundaries for validation
"""

from .state import State
from .transition import Transition
from .event import Event
from .region import Region
from .machine import StateMachine

__all__ = ["State", "Transition", "Event", "Region", "StateMachine"]

--- END OF FILE: /home/atomik/src/gotstate/gotstate/core/__init__.py ---

--- START OF FILE: /home/atomik/src/gotstate/gotstate/core/region.py ---
"""
Parallel region and concurrency management.

Architecture:
- Implements parallel region execution
- Manages region synchronization
- Handles cross-region transitions
- Coordinates with State for hierarchy
- Integrates with Executor for concurrency

Design Patterns:
- Composite Pattern: Region hierarchy
- Observer Pattern: Region events
- Mediator Pattern: Region coordination
- State Pattern: Region lifecycle
- Strategy Pattern: Execution policies

Responsibilities:
1. Parallel Execution
   - True parallel regions
   - State consistency
   - Cross-region transitions
   - Join/fork pseudostates
   - Event ordering

2. Region Synchronization
   - State consistency
   - Event processing
   - Synchronization points
   - Race condition prevention
   - Resource coordination

3. Region Lifecycle
   - Initialization sequence
   - Termination order
   - History restoration
   - Cross-region coordination
   - Data consistency

4. Event Management
   - Event ordering
   - Event propagation
   - Priority handling
   - Scope boundaries
   - Processing rules

Security:
- Region isolation
- Resource boundaries
- State protection
- Event validation

Cross-cutting:
- Error handling
- Performance monitoring
- Region metrics
- Thread safety

Dependencies:
- state.py: State hierarchy
- event.py: Event processing
- executor.py: Parallel execution
- machine.py: Machine context
"""

from typing import Optional, List, Set, Dict
from enum import Enum, auto
from dataclasses import dataclass
from threading import Lock, Event


class RegionStatus(Enum):
    """Defines the possible states of a region.
    
    Used to track region lifecycle and coordinate execution.
    """
    INACTIVE = auto()   # Region not yet started
    ACTIVE = auto()     # Region executing normally
    SUSPENDED = auto()  # Region temporarily suspended
    TERMINATING = auto() # Region in process of terminating
    TERMINATED = auto() # Region fully terminated


class Region:
    """Represents a parallel region in a hierarchical state machine.
    
    The Region class implements concurrent execution of orthogonal
    state configurations with proper synchronization and isolation.
    
    Class Invariants:
    1. Must maintain state consistency
    2. Must preserve event ordering
    3. Must handle cross-region transitions
    4. Must enforce isolation boundaries
    5. Must coordinate initialization/termination
    6. Must preserve history state
    7. Must handle interruptions gracefully
    8. Must maintain event scope
    9. Must prevent race conditions
    10. Must manage resources properly
    
    Design Patterns:
    - Composite: Manages region hierarchy
    - Observer: Notifies of region events
    - Mediator: Coordinates between regions
    - State: Manages region lifecycle
    - Strategy: Implements execution policies
    - Command: Encapsulates region operations
    
    Data Structures:
    - Set for active states
    - Queue for pending events
    - Map for history states
    - Tree for scope hierarchy
    - Graph for transition paths
    
    Algorithms:
    - Parallel execution scheduling
    - Event propagation routing
    - Synchronization point management
    - Resource allocation
    - Deadlock prevention
    
    Threading/Concurrency Guarantees:
    1. Thread-safe state access
    2. Atomic region operations
    3. Synchronized event processing
    4. Safe cross-region transitions
    5. Lock-free status inspection
    6. Mutex protection for critical sections
    
    Performance Characteristics:
    1. O(1) status updates
    2. O(log n) event routing
    3. O(p) parallel execution where p is active paths
    4. O(s) synchronization where s is sync points
    5. O(r) cross-region coordination where r is region count
    
    Resource Management:
    1. Bounded thread usage
    2. Controlled memory allocation
    3. Resource pooling
    4. Automatic cleanup
    5. Load balancing
    """
    pass


class ParallelRegion(Region):
    """Represents a region that executes in parallel with siblings.
    
    ParallelRegion implements true concurrent execution with proper
    isolation and synchronization guarantees.
    
    Class Invariants:
    1. Must maintain parallel execution
    2. Must preserve isolation
    3. Must handle shared resources
    4. Must coordinate termination
    
    Design Patterns:
    - Strategy: Implements parallel execution
    - Observer: Monitors execution status
    - Mediator: Coordinates resources
    
    Threading/Concurrency Guarantees:
    1. Thread-safe execution
    2. Atomic operations
    3. Safe resource sharing
    
    Performance Characteristics:
    1. O(1) execution management
    2. O(r) resource coordination where r is resource count
    3. O(s) state synchronization where s is shared state count
    """
    pass


class SynchronizationRegion(Region):
    """Represents a region that coordinates synchronization points.
    
    SynchronizationRegion manages join/fork pseudostates and ensures
    proper coordination between parallel regions.
    
    Class Invariants:
    1. Must maintain sync point validity
    2. Must handle partial completion
    3. Must prevent deadlocks
    4. Must track progress
    
    Design Patterns:
    - Mediator: Coordinates synchronization
    - Observer: Monitors progress
    - Command: Encapsulates sync operations
    
    Threading/Concurrency Guarantees:
    1. Thread-safe synchronization
    2. Atomic progress updates
    3. Safe concurrent access
    
    Performance Characteristics:
    1. O(1) point management
    2. O(p) progress tracking where p is participant count
    3. O(d) deadlock detection where d is dependency count
    """
    pass


class HistoryRegion(Region):
    """Represents a region that maintains history state information.
    
    HistoryRegion preserves and restores historical state configurations
    for both shallow and deep history.
    
    Class Invariants:
    1. Must maintain history accuracy
    2. Must handle parallel states
    3. Must preserve ordering
    4. Must support restoration
    
    Design Patterns:
    - Memento: Preserves history state
    - Strategy: Implements history types
    - Command: Encapsulates restoration
    
    Threading/Concurrency Guarantees:
    1. Thread-safe history tracking
    2. Atomic state restoration
    3. Safe concurrent access
    
    Performance Characteristics:
    1. O(1) history updates
    2. O(h) state restoration where h is history depth
    3. O(s) parallel state handling where s is state count
    """
    pass


class RegionManager:
    """Manages multiple regions and their interactions.
    
    RegionManager coordinates parallel regions, handles resource
    allocation, and ensures proper synchronization.
    
    Class Invariants:
    1. Must maintain region isolation
    2. Must handle resource allocation
    3. Must prevent deadlocks
    4. Must coordinate execution
    5. Must manage lifecycle
    6. Must track dependencies
    7. Must handle failures
    8. Must preserve ordering
    9. Must support scaling
    10. Must enforce boundaries
    
    Design Patterns:
    - Facade: Provides region management interface
    - Factory: Creates region instances
    - Observer: Monitors region status
    - Mediator: Coordinates interactions
    
    Data Structures:
    - Map of active regions
    - Graph of dependencies
    - Queue of pending operations
    - Pool of resources
    
    Algorithms:
    - Resource allocation
    - Deadlock detection
    - Load balancing
    - Failure recovery
    
    Threading/Concurrency Guarantees:
    1. Thread-safe management
    2. Atomic operations
    3. Synchronized coordination
    4. Safe concurrent access
    5. Lock-free inspection
    6. Mutex protection
    
    Performance Characteristics:
    1. O(1) region lookup
    2. O(log n) resource allocation
    3. O(d) deadlock detection where d is dependency count
    4. O(r) coordination where r is region count
    5. O(f) failure handling where f is failure count
    
    Resource Management:
    1. Bounded region count
    2. Pooled resources
    3. Automatic cleanup
    4. Load distribution
    5. Failure isolation
    """
    pass

--- END OF FILE: /home/atomik/src/gotstate/gotstate/core/region.py ---

--- START OF FILE: /home/atomik/src/gotstate/gotstate/core/machine.py ---
"""
State machine orchestration and lifecycle management.

Architecture:
- Orchestrates state machine components
- Manages machine lifecycle and configuration
- Coordinates core component interactions
- Integrates with Monitor for introspection
- Handles dynamic modifications

Design Patterns:
- Facade Pattern: Component coordination
- Builder Pattern: Machine configuration
- Observer Pattern: State notifications
- Mediator Pattern: Component interaction
- Strategy Pattern: Machine policies

Responsibilities:
1. Machine Lifecycle
   - Initialization
   - Configuration
   - Dynamic modification
   - Version management
   - Termination

2. Component Coordination
   - State management
   - Transition handling
   - Event processing
   - Region execution
   - Resource control

3. Machine Configuration
   - Validation rules
   - Security policies
   - Resource limits
   - Extension settings
   - Monitoring options

4. Dynamic Modifications
   - Runtime changes
   - Semantic consistency
   - State preservation
   - Version compatibility
   - Modification atomicity

Security:
- Configuration validation
- Component isolation
- Resource management
- Extension control

Cross-cutting:
- Error handling
- Performance monitoring
- Machine metrics
- Thread safety

Dependencies:
- state.py: State management
- transition.py: Transition handling
- event.py: Event processing
- region.py: Region coordination
- monitor.py: Machine monitoring
"""

from typing import Optional, Dict, List, Any
from enum import Enum, auto
from dataclasses import dataclass
from threading import Lock, RLock, Event


class MachineStatus(Enum):
    """Defines the possible states of a state machine.
    
    Used to track machine lifecycle and coordinate operations.
    """
    UNINITIALIZED = auto()  # Machine not yet configured
    INITIALIZING = auto()   # Machine being configured
    ACTIVE = auto()         # Machine running normally
    MODIFYING = auto()      # Machine being modified
    TERMINATING = auto()    # Machine shutting down
    TERMINATED = auto()     # Machine fully stopped


class StateMachine:
    """Represents a hierarchical state machine.
    
    The StateMachine class implements the Facade pattern to coordinate
    all components and manage the machine lifecycle.
    
    Class Invariants:
    1. Must maintain semantic consistency
    2. Must preserve state hierarchy
    3. Must coordinate components
    4. Must enforce configuration
    5. Must handle modifications
    6. Must manage resources
    7. Must track versions
    8. Must support introspection
    9. Must isolate extensions
    10. Must maintain metrics
    
    Design Patterns:
    - Facade: Coordinates components
    - Builder: Configures machine
    - Observer: Notifies of changes
    - Mediator: Manages interactions
    - Strategy: Implements policies
    - Command: Encapsulates operations
    
    Data Structures:
    - Tree for state hierarchy
    - Graph for transitions
    - Queue for events
    - Map for components
    - Set for active states
    
    Algorithms:
    - Configuration validation
    - Version compatibility
    - Resource allocation
    - Modification planning
    - Metrics aggregation
    
    Threading/Concurrency Guarantees:
    1. Thread-safe operations
    2. Atomic modifications
    3. Synchronized components
    4. Safe concurrent access
    5. Lock-free inspection
    6. Mutex protection
    
    Performance Characteristics:
    1. O(1) status checks
    2. O(log n) component access
    3. O(h) hierarchy operations where h is height
    4. O(m) modifications where m is change count
    5. O(v) version checks where v is version count
    
    Resource Management:
    1. Bounded memory usage
    2. Controlled thread allocation
    3. Resource pooling
    4. Automatic cleanup
    5. Load distribution
    """
    pass


class ProtocolMachine(StateMachine):
    """Represents a protocol state machine.
    
    ProtocolMachine enforces protocol constraints and operation
    sequences for behavioral specifications.
    
    Class Invariants:
    1. Must enforce protocol rules
    2. Must validate operations
    3. Must track protocol state
    4. Must maintain sequences
    
    Design Patterns:
    - State: Manages protocol states
    - Strategy: Implements protocols
    - Command: Encapsulates operations
    
    Threading/Concurrency Guarantees:
    1. Thread-safe validation
    2. Atomic operations
    3. Safe concurrent access
    
    Performance Characteristics:
    1. O(1) state checks
    2. O(r) rule validation where r is rule count
    3. O(s) sequence tracking where s is sequence length
    """
    pass


class SubmachineMachine(StateMachine):
    """Represents a submachine state machine.
    
    SubmachineMachine implements reusable state machine components
    that can be referenced by other machines.
    
    Class Invariants:
    1. Must maintain encapsulation
    2. Must handle references
    3. Must coordinate lifecycle
    4. Must isolate data
    
    Design Patterns:
    - Proxy: Manages references
    - Flyweight: Shares instances
    - Bridge: Decouples interface
    
    Threading/Concurrency Guarantees:
    1. Thread-safe reference management
    2. Atomic lifecycle operations
    3. Safe concurrent access
    
    Performance Characteristics:
    1. O(1) reference management
    2. O(r) coordination where r is reference count
    3. O(d) data isolation where d is data size
    """
    pass


class MachineBuilder:
    """Builds state machine configurations.
    
    MachineBuilder implements the Builder pattern to construct
    valid state machine configurations.
    
    Class Invariants:
    1. Must validate configuration
    2. Must enforce constraints
    3. Must maintain consistency
    4. Must track dependencies
    
    Design Patterns:
    - Builder: Constructs machines
    - Factory: Creates components
    - Validator: Checks configuration
    
    Threading/Concurrency Guarantees:
    1. Thread-safe construction
    2. Atomic validation
    3. Safe concurrent access
    
    Performance Characteristics:
    1. O(c) configuration where c is component count
    2. O(v) validation where v is rule count
    3. O(d) dependency resolution where d is dependency count
    """
    pass


class MachineModifier:
    """Manages dynamic state machine modifications.
    
    MachineModifier implements safe runtime modifications while
    preserving semantic consistency.
    
    Class Invariants:
    1. Must preserve semantics
    2. Must maintain atomicity
    3. Must handle rollback
    4. Must validate changes
    
    Design Patterns:
    - Command: Encapsulates changes
    - Memento: Preserves state
    - Strategy: Implements policies
    
    Threading/Concurrency Guarantees:
    1. Thread-safe modifications
    2. Atomic changes
    3. Safe concurrent access
    
    Performance Characteristics:
    1. O(c) change application where c is change count
    2. O(v) validation where v is validation count
    3. O(r) rollback where r is change depth
    """
    pass


class MachineMonitor:
    """Monitors state machine execution.
    
    MachineMonitor implements introspection capabilities and
    collects runtime metrics.
    
    Class Invariants:
    1. Must track metrics
    2. Must handle events
    3. Must maintain history
    4. Must support queries
    
    Design Patterns:
    - Observer: Monitors changes
    - Strategy: Implements policies
    - Command: Encapsulates queries
    
    Threading/Concurrency Guarantees:
    1. Thread-safe monitoring
    2. Atomic updates
    3. Safe concurrent access
    
    Performance Characteristics:
    1. O(1) metric updates
    2. O(q) query execution where q is query complexity
    3. O(h) history tracking where h is history size
    """
    pass

--- END OF FILE: /home/atomik/src/gotstate/gotstate/core/machine.py ---

--- START OF FILE: /home/atomik/src/gotstate/gotstate/core/transition.py ---
"""
Transition types and behavior management.

Architecture:
- Implements transition type hierarchy and behavior
- Manages transition execution and actions
- Resolves transition conflicts
- Coordinates with State for state changes
- Integrates with Event for triggers

Design Patterns:
- Command Pattern: Transition execution
- Strategy Pattern: Transition types
- Chain of Responsibility: Guard evaluation
- Observer Pattern: Transition notifications
- Template Method: Transition execution steps

Responsibilities:
1. Transition Types
   - External transitions
   - Internal transitions
   - Local transitions
   - Compound transitions
   - Protocol transitions

2. Transition Behavior
   - Guard conditions
   - Actions execution
   - Source/target validation
   - Completion transitions
   - Time/change triggers

3. Semantic Resolution
   - Conflict resolution
   - Priority handling
   - Simultaneous transitions
   - Cross-region coordination
   - Execution ordering

4. Error Handling
   - Partial completion
   - Guard evaluation errors
   - Action execution failures
   - State consistency
   - Resource cleanup

Security:
- Action execution isolation
- Guard evaluation boundaries
- Resource usage control
- State change validation

Cross-cutting:
- Error propagation
- Performance monitoring
- Transition metrics
- Thread safety

Dependencies:
- state.py: State change coordination
- event.py: Event trigger integration
- region.py: Cross-region transitions
- machine.py: Machine context
"""

from typing import Optional, List, Callable, Any
from enum import Enum, auto
from dataclasses import dataclass


class TransitionKind(Enum):
    """Defines the different types of transitions in the state machine.
    
    Used to determine the execution semantics and state exit/entry behavior
    for each transition type.
    """
    EXTERNAL = auto()  # Exits source state(s), enters target state(s)
    INTERNAL = auto()  # No state exit/entry, source must equal target
    LOCAL = auto()     # Minimizes state exit/entry within composite state
    COMPOUND = auto()  # Multiple segments with intermediate pseudostates


class TransitionPriority(Enum):
    """Defines priority levels for transition conflict resolution.
    
    Used to determine which transition takes precedence when multiple
    transitions are enabled simultaneously.
    """
    HIGH = auto()    # Takes precedence over lower priorities
    NORMAL = auto()  # Default priority level
    LOW = auto()     # Yields to higher priority transitions


class Transition:
    """Represents a transition between states in a hierarchical state machine.
    
    The Transition class implements the Command pattern to encapsulate all aspects
    of a state transition including guards, actions, and execution semantics.
    
    Class Invariants:
    1. Source and target states must be valid and compatible
    2. Guard conditions must be side-effect free
    3. Actions must maintain state consistency
    4. Transition kind must not change after initialization
    5. Priority must be valid for conflict resolution
    6. Trigger specifications must be well-formed
    7. Cross-region transitions must be properly synchronized
    8. Compound transitions must have valid segments
    9. Protocol transitions must maintain protocol constraints
    10. Time/change triggers must be properly scheduled
    
    Design Patterns:
    - Command: Encapsulates transition execution
    - Strategy: Implements transition type behavior
    - Chain of Responsibility: Processes guard conditions
    - Observer: Notifies of transition execution
    - Template Method: Defines execution steps
    - Memento: Preserves state for rollback
    
    Data Structures:
    - List for compound transition segments
    - Queue for pending actions
    - Set for affected regions
    - Tree for LCA computation
    - Priority queue for conflict resolution
    
    Algorithms:
    - LCA computation for transition scope
    - Topological sort for execution order
    - Priority-based conflict resolution
    - Path computation for state changes
    
    Threading/Concurrency Guarantees:
    1. Thread-safe transition execution
    2. Atomic guard evaluation
    3. Synchronized action execution
    4. Safe concurrent conflict resolution
    5. Lock-free transition inspection
    6. Mutex protection for state changes
    
    Performance Characteristics:
    1. O(1) kind/priority checking
    2. O(log n) conflict resolution
    3. O(h) LCA computation where h is hierarchy depth
    4. O(a) action execution where a is action count
    5. O(g) guard evaluation where g is guard count
    
    Resource Management:
    1. Bounded action execution time
    2. Controlled guard evaluation scope
    3. Limited concurrent transitions
    4. Pooled transition objects
    5. Cached computation results
    """
    pass


class ExternalTransition(Transition):
    """Represents an external transition that exits source state(s).
    
    ExternalTransition implements the full exit/entry state behavior,
    following UML state machine semantics.
    
    Class Invariants:
    1. Must exit source state(s)
    2. Must enter target state(s)
    3. Must execute actions in correct order
    4. Must maintain state consistency
    
    Design Patterns:
    - Template Method: Defines execution sequence
    - Command: Encapsulates state changes
    - Observer: Notifies of state changes
    
    Threading/Concurrency Guarantees:
    1. Thread-safe state changes
    2. Atomic execution sequence
    3. Safe concurrent access
    
    Performance Characteristics:
    1. O(h) state exit/entry where h is hierarchy depth
    2. O(a) action execution where a is action count
    3. O(r) region synchronization where r is region count
    """
    pass


class InternalTransition(Transition):
    """Represents an internal transition within a single state.
    
    InternalTransition executes without exiting or entering states,
    maintaining the current state configuration.
    
    Class Invariants:
    1. Source must equal target state
    2. Must not exit/enter states
    3. Must maintain state consistency
    4. Must execute actions atomically
    
    Design Patterns:
    - Strategy: Implements internal behavior
    - Command: Encapsulates actions
    - Observer: Notifies of execution
    
    Threading/Concurrency Guarantees:
    1. Thread-safe action execution
    2. Atomic state updates
    3. Safe concurrent access
    
    Performance Characteristics:
    1. O(1) state validation
    2. O(a) action execution where a is action count
    3. O(1) consistency check
    """
    pass


class LocalTransition(Transition):
    """Represents a local transition within a composite state.
    
    LocalTransition minimizes the scope of state exit/entry operations
    while maintaining proper transition semantics.
    
    Class Invariants:
    1. Must minimize state exit/entry
    2. Must maintain hierarchy consistency
    3. Must execute actions in order
    4. Must preserve region stability
    
    Design Patterns:
    - Strategy: Implements local semantics
    - Command: Encapsulates minimal changes
    - Observer: Notifies of local changes
    
    Threading/Concurrency Guarantees:
    1. Thread-safe local changes
    2. Atomic scope execution
    3. Safe concurrent access
    
    Performance Characteristics:
    1. O(d) scope computation where d is depth difference
    2. O(a) action execution where a is action count
    3. O(r) region synchronization where r is region count
    """
    pass


class CompoundTransition(Transition):
    """Represents a compound transition with multiple segments.
    
    CompoundTransition manages a sequence of transition segments,
    coordinating their execution through pseudostates.
    
    Class Invariants:
    1. Must have valid segment sequence
    2. Must maintain execution order
    3. Must coordinate pseudostates
    4. Must handle segment failures
    
    Design Patterns:
    - Composite: Manages transition segments
    - Chain of Responsibility: Processes segments
    - Command: Encapsulates segment execution
    
    Data Structures:
    - List of ordered segments
    - Queue for pending segments
    - Set for completed segments
    
    Threading/Concurrency Guarantees:
    1. Thread-safe segment execution
    2. Atomic sequence completion
    3. Safe concurrent access
    
    Performance Characteristics:
    1. O(s) execution where s is segment count
    2. O(p) pseudostate coordination where p is pseudostate count
    3. O(r) rollback where r is completed segment count
    """
    pass


class ProtocolTransition(Transition):
    """Represents a protocol transition with strict constraints.
    
    ProtocolTransition enforces protocol state machine semantics,
    ensuring valid state sequences and operation calls.
    
    Class Invariants:
    1. Must follow protocol constraints
    2. Must validate operation calls
    3. Must maintain protocol state
    4. Must enforce sequence rules
    
    Design Patterns:
    - State: Manages protocol states
    - Strategy: Implements protocol rules
    - Command: Encapsulates operations
    
    Threading/Concurrency Guarantees:
    1. Thread-safe protocol checks
    2. Atomic operation validation
    3. Safe concurrent access
    
    Performance Characteristics:
    1. O(1) protocol state check
    2. O(v) operation validation where v is validator count
    3. O(c) constraint checking where c is constraint count
    """
    pass


class TimeTransition(Transition):
    """Represents a time-triggered transition.
    
    TimeTransition manages transitions triggered by time events,
    both relative ("after") and absolute ("at") timing.
    
    Class Invariants:
    1. Must have valid time specification
    2. Must maintain timing accuracy
    3. Must handle timer interruptions
    4. Must support cancellation
    
    Design Patterns:
    - Command: Encapsulates time events
    - Observer: Notifies of timing
    - Strategy: Implements timing types
    
    Threading/Concurrency Guarantees:
    1. Thread-safe timer operations
    2. Atomic execution scheduling
    3. Safe concurrent access
    
    Performance Characteristics:
    1. O(1) timer operations
    2. O(log n) scheduling where n is timer count
    3. O(1) cancellation
    """
    pass


class ChangeTransition(Transition):
    """Represents a change-triggered transition.
    
    ChangeTransition manages transitions triggered by changes in
    boolean conditions, implementing the observer pattern.
    
    Class Invariants:
    1. Must have valid change condition
    2. Must detect all changes
    3. Must prevent missed triggers
    4. Must maintain condition state
    
    Design Patterns:
    - Observer: Monitors changes
    - Strategy: Implements detection
    - Command: Encapsulates triggers
    
    Threading/Concurrency Guarantees:
    1. Thread-safe condition monitoring
    2. Atomic change detection
    3. Safe concurrent access
    
    Performance Characteristics:
    1. O(1) state checking
    2. O(c) condition evaluation where c is condition complexity
    3. O(o) observer notification where o is observer count
    """
    pass

--- END OF FILE: /home/atomik/src/gotstate/gotstate/core/transition.py ---

--- START OF FILE: /home/atomik/src/gotstate/gotstate/core/event.py ---
"""
Event processing and queue management.

Architecture:
- Implements event processing and queue management
- Handles event patterns and ordering
- Maintains event processing semantics
- Coordinates with Executor for processing
- Integrates with Scheduler for time events

Design Patterns:
- Observer Pattern: Event notifications
- Command Pattern: Event execution
- Strategy Pattern: Processing patterns
- Queue Pattern: Event queuing
- Chain of Responsibility: Event handling

Responsibilities:
1. Event Processing
   - Synchronous processing
   - Asynchronous processing
   - Event deferral
   - Priority handling
   - Completion events

2. Event Queue
   - Queue management
   - Event ordering
   - Event cancellation
   - Timeout handling
   - Event filtering

3. Processing Patterns
   - Single consumption
   - Broadcast events
   - Conditional events
   - Event scoping
   - Priority rules

4. Run-to-Completion
   - RTC semantics
   - Queue during transitions
   - Order preservation
   - Re-entrant processing
   - Timeout handling

Security:
- Event validation
- Queue protection
- Resource monitoring
- Processing boundaries

Cross-cutting:
- Error handling
- Performance optimization
- Event metrics
- Thread safety

Dependencies:
- transition.py: Event triggers
- executor.py: Event execution
- scheduler.py: Time events
- machine.py: Machine context
"""

from typing import Optional, Dict, List, Any, Set
from enum import Enum, auto
from dataclasses import dataclass
from queue import PriorityQueue


class EventKind(Enum):
    """Defines the different types of events in the state machine.
    
    Used to determine event processing behavior and routing.
    """
    SIGNAL = auto()     # External signal events
    CALL = auto()       # Synchronous call events
    TIME = auto()       # Time-based events
    CHANGE = auto()     # Change notification events
    COMPLETION = auto() # State completion events


class EventPriority(Enum):
    """Defines priority levels for event processing.
    
    Used to determine event processing order in the queue.
    """
    HIGH = auto()    # Processed before normal priority
    NORMAL = auto()  # Default processing priority
    LOW = auto()     # Processed after normal priority
    DEFER = auto()   # Deferred until state exit


class Event:
    """Represents an event in the state machine.
    
    The Event class implements the Command pattern to encapsulate event
    data and processing behavior. It supports various event types and
    processing patterns.
    
    Class Invariants:
    1. Event ID must be unique within its scope
    2. Event kind must not change after creation
    3. Event data must be immutable
    4. Priority must be valid
    5. Timeout must be non-negative if specified
    6. Parameters must be serializable
    7. Event scope must be well-defined
    8. Processing status must be tracked
    9. Cancellation must be handled gracefully
    10. Resources must be properly managed
    
    Design Patterns:
    - Command: Encapsulates event data and behavior
    - Observer: Notifies of event processing
    - Strategy: Implements processing patterns
    - Memento: Preserves event state
    - Chain of Responsibility: Handles event processing
    
    Data Structures:
    - Dictionary for event parameters
    - Set for consumed status
    - Queue for processing order
    - Tree for scope hierarchy
    - Map for deferred events
    
    Algorithms:
    - Priority-based scheduling
    - Scope resolution
    - Timeout handling
    - Consumption tracking
    
    Threading/Concurrency Guarantees:
    1. Thread-safe event processing
    2. Atomic parameter access
    3. Synchronized scope checking
    4. Safe concurrent consumption
    5. Lock-free status inspection
    6. Mutex protection for queue operations
    
    Performance Characteristics:
    1. O(1) event creation
    2. O(log n) priority queuing
    3. O(1) parameter access
    4. O(h) scope checking where h is hierarchy depth
    5. O(1) status updates
    
    Resource Management:
    1. Bounded queue size
    2. Pooled event objects
    3. Cached scope information
    4. Limited concurrent processing
    5. Automatic timeout cleanup
    """
    pass


class SignalEvent(Event):
    """Represents an asynchronous signal event.
    
    SignalEvent implements asynchronous event processing with
    optional payload data and broadcast capabilities.
    
    Class Invariants:
    1. Must maintain signal ordering
    2. Must handle broadcast properly
    3. Must track consumption status
    4. Must preserve payload integrity
    
    Design Patterns:
    - Observer: Implements signal notification
    - Command: Encapsulates signal data
    - Strategy: Implements broadcast behavior
    
    Threading/Concurrency Guarantees:
    1. Thread-safe signal dispatch
    2. Atomic consumption tracking
    3. Safe concurrent broadcast
    
    Performance Characteristics:
    1. O(1) signal creation
    2. O(n) broadcast where n is listener count
    3. O(1) consumption status
    """
    pass


class CallEvent(Event):
    """Represents a synchronous call event.
    
    CallEvent implements synchronous operation calls with
    return values and parameter passing.
    
    Class Invariants:
    1. Must complete synchronously
    2. Must handle return values
    3. Must validate parameters
    4. Must maintain call semantics
    
    Design Patterns:
    - Command: Encapsulates operation call
    - Strategy: Implements call handling
    - Template Method: Defines call sequence
    
    Threading/Concurrency Guarantees:
    1. Thread-safe parameter handling
    2. Atomic operation execution
    3. Safe concurrent calls
    
    Performance Characteristics:
    1. O(1) call creation
    2. O(p) parameter validation where p is parameter count
    3. O(1) return value handling
    """
    pass


class TimeEvent(Event):
    """Represents a time-based event.
    
    TimeEvent implements both relative ("after") and absolute ("at")
    timing events with proper scheduling.
    
    Class Invariants:
    1. Must have valid time specification
    2. Must maintain timing accuracy
    3. Must handle cancellation
    4. Must track scheduling status
    
    Design Patterns:
    - Command: Encapsulates timing logic
    - Observer: Notifies of timing
    - Strategy: Implements timing types
    
    Threading/Concurrency Guarantees:
    1. Thread-safe scheduling
    2. Atomic timer operations
    3. Safe concurrent access
    
    Performance Characteristics:
    1. O(1) event creation
    2. O(log n) scheduling where n is timer count
    3. O(1) cancellation
    """
    pass


class ChangeEvent(Event):
    """Represents a change notification event.
    
    ChangeEvent implements condition-based events that trigger
    when monitored values change.
    
    Class Invariants:
    1. Must track condition state
    2. Must detect all changes
    3. Must prevent missed events
    4. Must maintain change history
    
    Design Patterns:
    - Observer: Monitors changes
    - Command: Encapsulates conditions
    - Strategy: Implements detection
    
    Threading/Concurrency Guarantees:
    1. Thread-safe condition monitoring
    2. Atomic change detection
    3. Safe concurrent notification
    
    Performance Characteristics:
    1. O(1) event creation
    2. O(c) condition evaluation where c is condition complexity
    3. O(h) history tracking where h is history size
    """
    pass


class CompletionEvent(Event):
    """Represents a state completion event.
    
    CompletionEvent is automatically generated when a state
    completes its do-activity or becomes final.
    
    Class Invariants:
    1. Must track completion status
    2. Must maintain state consistency
    3. Must handle parallel regions
    4. Must preserve completion order
    
    Design Patterns:
    - Observer: Notifies of completion
    - Command: Encapsulates completion
    - Strategy: Implements completion types
    
    Threading/Concurrency Guarantees:
    1. Thread-safe status tracking
    2. Atomic completion detection
    3. Safe concurrent notification
    
    Performance Characteristics:
    1. O(1) event creation
    2. O(r) region checking where r is region count
    3. O(1) status updates
    """
    pass


class EventQueue:
    """Manages event queuing and processing.
    
    EventQueue implements a priority-based event queue with
    run-to-completion semantics and proper ordering.
    
    Class Invariants:
    1. Must maintain event order
    2. Must enforce RTC semantics
    3. Must handle priorities
    4. Must manage timeouts
    5. Must support cancellation
    6. Must track queue status
    7. Must handle overflow
    8. Must preserve fairness
    9. Must support filtering
    10. Must maintain consistency
    
    Design Patterns:
    - Queue: Manages event ordering
    - Strategy: Implements queue policies
    - Observer: Notifies of queue changes
    - Chain of Responsibility: Processes events
    
    Data Structures:
    - Priority queue for events
    - Set for cancelled events
    - Map for deferred events
    - List for processing history
    
    Algorithms:
    - Priority scheduling
    - Timeout management
    - Fairness enforcement
    - Load balancing
    
    Threading/Concurrency Guarantees:
    1. Thread-safe queue operations
    2. Atomic event processing
    3. Synchronized status updates
    4. Safe concurrent access
    5. Lock-free inspection
    6. Mutex protection for modifications
    
    Performance Characteristics:
    1. O(log n) enqueue/dequeue
    2. O(1) cancellation
    3. O(1) status check
    4. O(k) filtering where k is filter count
    5. O(t) timeout cleanup where t is timeout count
    
    Resource Management:
    1. Bounded queue size
    2. Memory-efficient storage
    3. Automatic cleanup
    4. Resource pooling
    5. Load shedding
    """
    pass

--- END OF FILE: /home/atomik/src/gotstate/gotstate/core/event.py ---

--- START OF FILE: /home/atomik/src/gotstate/gotstate/types/base.py ---
"""
Core type system definitions and management.

Architecture:
- Defines core type system
- Specifies type compatibility
- Manages type safety
- Coordinates with validation
- Integrates with extensions

Design Patterns:
- Factory Pattern: Type creation
- Strategy Pattern: Type operations
- Visitor Pattern: Type traversal
- Observer Pattern: Type changes
- Template Method: Type behavior

Responsibilities:
1. Type System
   - Core types
   - Type hierarchy
   - Type relationships
   - Type constraints
   - Type operations

2. Type Safety
   - Type checking
   - Type conversion
   - Type validation
   - Error handling
   - Safety guarantees

3. Type Management
   - Type registration
   - Type lookup
   - Type caching
   - Type versioning
   - Type metadata

4. Type Integration
   - Extension support
   - Validation hooks
   - Conversion bridges
   - Serialization
   - Type evolution

Security:
- Type validation
- Operation safety
- Resource limits
- Access control

Cross-cutting:
- Error handling
- Performance optimization
- Type metrics
- Thread safety

Dependencies:
- extensions.py: Type extensions
- validator.py: Type validation
- serializer.py: Type serialization
- monitor.py: Type monitoring
"""

from typing import Optional, Dict, List, Set, Any, TypeVar, Generic
from enum import Enum, auto
from dataclasses import dataclass
from threading import Lock, RLock
from abc import ABC, abstractmethod


class TypeKind(Enum):
    """Defines the different kinds of types.
    
    Used to determine type behavior and compatibility.
    """
    PRIMITIVE = auto()  # Basic primitive types
    COMPOSITE = auto()  # Composed of other types
    GENERIC = auto()    # Parameterized types
    UNION = auto()      # Union of types
    EXTENSION = auto()  # Extension-provided types


class TypeConstraint(Enum):
    """Defines type system constraints.
    
    Used to enforce type system rules and safety.
    """
    IMMUTABLE = auto()  # Cannot be modified
    COVARIANT = auto()  # Allows subtype variance
    INVARIANT = auto()  # No variance allowed
    BOUNDED = auto()    # Has type bounds


class BaseType(ABC):
    """Base class for all types in the system.
    
    The BaseType class implements the Template Method pattern
    to define common type behavior and operations.
    
    Class Invariants:
    1. Must maintain type safety
    2. Must preserve constraints
    3. Must handle conversions
    4. Must validate operations
    5. Must track metadata
    6. Must support extensions
    7. Must enable traversal
    8. Must enforce bounds
    9. Must optimize performance
    10. Must maintain metrics
    
    Design Patterns:
    - Template Method: Defines behavior
    - Strategy: Implements operations
    - Visitor: Enables traversal
    - Observer: Tracks changes
    - Factory: Creates instances
    
    Data Structures:
    - Graph for type hierarchy
    - Map for conversions
    - Cache for operations
    - Set for constraints
    - Tree for structure
    
    Algorithms:
    - Type checking
    - Constraint solving
    - Conversion routing
    - Bound checking
    - Operation resolution
    
    Threading/Concurrency Guarantees:
    1. Thread-safe operations
    2. Atomic type checks
    3. Synchronized metadata
    4. Safe concurrent access
    5. Lock-free inspection
    6. Mutex protection
    
    Performance Characteristics:
    1. O(1) kind checking
    2. O(log n) hierarchy traversal
    3. O(c) constraint check where c is constraint count
    4. O(m) metadata access where m is metadata size
    5. O(o) operation lookup where o is operation count
    
    Resource Management:
    1. Bounded memory usage
    2. Cached operations
    3. Pooled instances
    4. Automatic cleanup
    5. Load balancing
    """
    pass


class PrimitiveType(BaseType):
    """Represents primitive types in the system.
    
    PrimitiveType implements basic type operations for
    fundamental data types.
    
    Class Invariants:
    1. Must be immutable
    2. Must be atomic
    3. Must handle conversions
    4. Must validate values
    
    Design Patterns:
    - Strategy: Implements operations
    - Factory: Creates instances
    - Flyweight: Shares instances
    
    Threading/Concurrency Guarantees:
    1. Thread-safe operations
    2. Immutable state
    3. Safe concurrent access
    
    Performance Characteristics:
    1. O(1) value operations
    2. O(c) conversion where c is conversion complexity
    3. O(v) validation where v is validation complexity
    """
    pass


class CompositeType(BaseType):
    """Represents composite types in the system.
    
    CompositeType implements operations for types composed
    of other types.
    
    Class Invariants:
    1. Must maintain structure
    2. Must validate components
    3. Must handle recursion
    4. Must preserve constraints
    
    Design Patterns:
    - Composite: Manages structure
    - Visitor: Traverses structure
    - Builder: Constructs instances
    
    Threading/Concurrency Guarantees:
    1. Thread-safe composition
    2. Atomic validation
    3. Safe concurrent access
    
    Performance Characteristics:
    1. O(n) traversal where n is component count
    2. O(v) validation where v is validator count
    3. O(c) construction where c is component count
    """
    pass


class GenericType(BaseType, Generic[TypeVar('T')]):
    """Represents generic types in the system.
    
    GenericType implements operations for parameterized
    types with type parameters.
    
    Class Invariants:
    1. Must handle parameters
    2. Must enforce bounds
    3. Must resolve variance
    4. Must maintain safety
    
    Design Patterns:
    - Strategy: Implements generics
    - Factory: Creates instances
    - Builder: Resolves parameters
    
    Threading/Concurrency Guarantees:
    1. Thread-safe resolution
    2. Atomic instantiation
    3. Safe concurrent access
    
    Performance Characteristics:
    1. O(p) parameter handling where p is parameter count
    2. O(b) bound checking where b is bound count
    3. O(v) variance check where v is variance point count
    """
    pass


class UnionType(BaseType):
    """Represents union types in the system.
    
    UnionType implements operations for types that can
    be one of several possible types.
    
    Class Invariants:
    1. Must track variants
    2. Must handle dispatch
    3. Must validate members
    4. Must preserve safety
    
    Design Patterns:
    - Strategy: Implements unions
    - Visitor: Handles variants
    - Chain: Processes dispatch
    
    Threading/Concurrency Guarantees:
    1. Thread-safe dispatch
    2. Atomic validation
    3. Safe concurrent access
    
    Performance Characteristics:
    1. O(v) variant check where v is variant count
    2. O(d) dispatch where d is dispatch complexity
    3. O(m) member validation where m is member count
    """
    pass


class TypeRegistry:
    """Manages type registration and lookup.
    
    TypeRegistry implements efficient type management and
    lookup operations.
    
    Class Invariants:
    1. Must maintain registry
    2. Must handle versions
    3. Must cache lookups
    4. Must validate entries
    
    Design Patterns:
    - Registry: Manages types
    - Factory: Creates entries
    - Cache: Optimizes lookup
    
    Threading/Concurrency Guarantees:
    1. Thread-safe registration
    2. Atomic updates
    3. Safe concurrent access
    
    Performance Characteristics:
    1. O(1) lookup
    2. O(log n) registration
    3. O(v) version check where v is version count
    """
    pass


class TypeConverter:
    """Manages type conversions.
    
    TypeConverter implements safe type conversion operations
    with validation.
    
    Class Invariants:
    1. Must validate conversion
    2. Must preserve semantics
    3. Must handle errors
    4. Must track success
    
    Design Patterns:
    - Strategy: Implements conversion
    - Chain: Processes steps
    - Observer: Reports results
    
    Threading/Concurrency Guarantees:
    1. Thread-safe conversion
    2. Atomic operations
    3. Safe concurrent access
    
    Performance Characteristics:
    1. O(c) conversion where c is conversion complexity
    2. O(v) validation where v is validation count
    3. O(s) step execution where s is step count
    """
    pass

--- END OF FILE: /home/atomik/src/gotstate/gotstate/types/base.py ---

--- START OF FILE: /home/atomik/src/gotstate/gotstate/types/extensions.py ---
"""
Type system extension management.

Architecture:
- Provides type extension points
- Manages type conversions
- Maintains type consistency
- Coordinates with base types
- Integrates with sandbox

Design Patterns:
- Plugin Pattern: Type extensions
- Adapter Pattern: Type conversion
- Decorator Pattern: Type wrapping
- Strategy Pattern: Extension behavior
- Chain of Responsibility: Type handling

Responsibilities:
1. Extension Management
   - Extension registration
   - Extension lifecycle
   - Extension validation
   - Extension isolation
   - Resource control

2. Type Conversion
   - Conversion rules
   - Type mapping
   - Data transformation
   - Validation hooks
   - Error handling

3. Type Integration
   - Base type coordination
   - Extension composition
   - Type compatibility
   - Version management
   - Extension interfaces

4. Extension Safety
   - Type validation
   - Resource limits
   - Isolation boundaries
   - Error containment
   - Security checks

Security:
- Extension isolation
- Type safety
- Resource control
- Access validation

Cross-cutting:
- Error handling
- Performance monitoring
- Extension metrics
- Thread safety

Dependencies:
- base.py: Core types
- sandbox.py: Extension isolation
- validator.py: Type validation
- monitor.py: Extension monitoring
"""

from typing import Optional, Dict, List, Set, Any, Protocol, TypeVar
from enum import Enum, auto
from dataclasses import dataclass
from threading import Lock, RLock
from abc import ABC, abstractmethod


class ExtensionStatus(Enum):
    """Defines extension lifecycle states.
    
    Used to track extension status and coordinate operations.
    """
    UNREGISTERED = auto() # Not yet registered
    REGISTERING = auto()  # Registration in progress
    ACTIVE = auto()       # Extension active
    SUSPENDED = auto()    # Temporarily suspended
    UNLOADING = auto()    # Being unloaded


class ExtensionScope(Enum):
    """Defines extension visibility scopes.
    
    Used to control extension access and isolation.
    """
    PRIVATE = auto()   # Extension-only access
    SHARED = auto()    # Shared with other extensions
    PUBLIC = auto()    # Available to all components
    SYSTEM = auto()    # System-level access


class TypeExtension(ABC):
    """Base class for type system extensions.
    
    The TypeExtension class implements the Plugin pattern to
    provide extensible type system functionality.
    
    Class Invariants:
    1. Must maintain isolation
    2. Must preserve type safety
    3. Must handle lifecycle
    4. Must validate operations
    5. Must control resources
    6. Must track metrics
    7. Must support composition
    8. Must handle errors
    9. Must enforce limits
    10. Must maintain compatibility
    
    Design Patterns:
    - Plugin: Implements extension
    - Adapter: Converts types
    - Decorator: Wraps types
    - Strategy: Implements behavior
    - Chain: Handles operations
    
    Data Structures:
    - Map for type mappings
    - Graph for dependencies
    - Queue for operations
    - Cache for conversions
    - Set for capabilities
    
    Algorithms:
    - Type conversion
    - Dependency resolution
    - Resource tracking
    - Operation routing
    - Error handling
    
    Threading/Concurrency Guarantees:
    1. Thread-safe operations
    2. Atomic conversions
    3. Synchronized state
    4. Safe concurrent access
    5. Lock-free inspection
    6. Mutex protection
    
    Performance Characteristics:
    1. O(1) status checks
    2. O(log n) type lookup
    3. O(c) conversion where c is conversion complexity
    4. O(v) validation where v is validator count
    5. O(r) resource tracking where r is resource count
    
    Resource Management:
    1. Bounded memory usage
    2. Controlled operations
    3. Resource pooling
    4. Automatic cleanup
    5. Load shedding
    """
    pass


class ExtensionManager:
    """Manages type system extensions.
    
    ExtensionManager implements extension lifecycle and
    resource management.
    
    Class Invariants:
    1. Must track extensions
    2. Must enforce isolation
    3. Must manage resources
    4. Must validate safety
    
    Design Patterns:
    - Factory: Creates extensions
    - Observer: Monitors lifecycle
    - Strategy: Implements policies
    
    Threading/Concurrency Guarantees:
    1. Thread-safe management
    2. Atomic operations
    3. Safe concurrent access
    
    Performance Characteristics:
    1. O(1) extension lookup
    2. O(n) lifecycle operations where n is extension count
    3. O(r) resource management where r is resource count
    """
    pass


class TypeConverter(Protocol):
    """Protocol for type conversion operations.
    
    TypeConverter defines the interface for implementing
    type conversion strategies.
    
    Class Invariants:
    1. Must preserve semantics
    2. Must validate types
    3. Must handle errors
    4. Must be efficient
    
    Design Patterns:
    - Strategy: Implements conversion
    - Chain: Processes steps
    - Observer: Reports results
    
    Threading/Concurrency Guarantees:
    1. Thread-safe conversion
    2. Atomic operations
    3. Safe concurrent access
    
    Performance Characteristics:
    1. O(c) conversion where c is conversion complexity
    2. O(v) validation where v is validator count
    3. O(e) error handling where e is error count
    """
    pass


class ExtensionType(ABC):
    """Base class for extension-provided types.
    
    ExtensionType implements the foundation for types
    provided by extensions.
    
    Class Invariants:
    1. Must maintain isolation
    2. Must integrate safely
    3. Must handle conversion
    4. Must support validation
    
    Design Patterns:
    - Template Method: Defines behavior
    - Adapter: Converts types
    - Visitor: Enables traversal
    
    Threading/Concurrency Guarantees:
    1. Thread-safe operations
    2. Atomic conversions
    3. Safe concurrent access
    
    Performance Characteristics:
    1. O(1) type operations
    2. O(c) conversion where c is conversion complexity
    3. O(v) validation where v is validator count
    """
    pass


class ExtensionComposite:
    """Composes multiple extensions.
    
    ExtensionComposite implements composition of multiple
    extensions with proper isolation.
    
    Class Invariants:
    1. Must maintain boundaries
    2. Must resolve conflicts
    3. Must manage dependencies
    4. Must preserve isolation
    
    Design Patterns:
    - Composite: Composes extensions
    - Mediator: Coordinates interaction
    - Chain: Processes operations
    
    Threading/Concurrency Guarantees:
    1. Thread-safe composition
    2. Atomic operations
    3. Safe concurrent access
    
    Performance Characteristics:
    1. O(n) composition where n is extension count
    2. O(d) dependency resolution where d is dependency count
    3. O(c) conflict resolution where c is conflict count
    """
    pass


class ExtensionValidator:
    """Validates extension operations.
    
    ExtensionValidator implements validation of extension
    operations and type safety.
    
    Class Invariants:
    1. Must verify safety
    2. Must check resources
    3. Must validate types
    4. Must track usage
    
    Design Patterns:
    - Strategy: Implements validation
    - Chain: Processes rules
    - Observer: Reports issues
    
    Threading/Concurrency Guarantees:
    1. Thread-safe validation
    2. Atomic checks
    3. Safe concurrent access
    
    Performance Characteristics:
    1. O(r) rule checking where r is rule count
    2. O(t) type validation where t is type count
    3. O(u) usage tracking where u is usage count
    """
    pass

--- END OF FILE: /home/atomik/src/gotstate/gotstate/types/extensions.py ---

--- START OF FILE: /home/atomik/src/gotstate/gotstate/types/__init__.py ---
"""
Types package for type system integration.

Architecture:
- Defines core type system
- Manages type extensions
- Maintains type safety
- Coordinates with validation
- Ensures type consistency

Design Patterns:
- Factory Pattern: Type creation
- Strategy Pattern: Type handling
- Adapter Pattern: Type conversion
- Visitor Pattern: Type validation
- Composite Pattern: Type composition

Security:
- Type validation
- Conversion safety
- Extension isolation
- Resource protection
- Access control

Cross-cutting:
- Error handling
- Performance optimization
- Type metrics
- Thread safety
"""

from .base import BaseType
from .extensions import TypeExtension

__all__ = ["BaseType", "TypeExtension"]

--- END OF FILE: /home/atomik/src/gotstate/gotstate/types/__init__.py ---

--- START OF FILE: /home/atomik/src/gotstate/gotstate/extensions/__init__.py ---
"""
Extensions package for extension mechanisms.

Architecture:
- Defines extension interfaces
- Manages extension lifecycle
- Provides extension points
- Coordinates with sandbox
- Maintains extension boundaries

Design Patterns:
- Plugin Pattern: Extension loading
- Strategy Pattern: Extension behavior
- Observer Pattern: Extension events
- Proxy Pattern: Extension isolation
- Chain of Responsibility: Extension handling

Security:
- Extension isolation
- Resource control
- Access validation
- Sandbox enforcement
- Security boundaries

Cross-cutting:
- Error handling
- Performance monitoring
- Extension metrics
- Thread safety
"""

from .hooks import ExtensionHooks
from .sandbox import ExtensionSandbox

__all__ = ["ExtensionHooks", "ExtensionSandbox"]

--- END OF FILE: /home/atomik/src/gotstate/gotstate/extensions/__init__.py ---

--- START OF FILE: /home/atomik/src/gotstate/gotstate/extensions/sandbox.py ---
"""
Extension isolation and security management.

Architecture:
- Implements extension isolation
- Enforces resource boundaries
- Manages extension security
- Coordinates with hooks
- Maintains extension guarantees

Design Patterns:
- Proxy Pattern: Extension isolation
- Strategy Pattern: Security policies
- Observer Pattern: Resource monitoring
- Decorator Pattern: Security wrapping
- Chain of Responsibility: Security checks

Responsibilities:
1. Extension Isolation
   - Resource boundaries
   - Memory limits
   - CPU constraints
   - I/O restrictions
   - Network control

2. Security Management
   - Access control
   - Permission checking
   - Resource validation
   - Operation monitoring
   - Threat prevention

3. Resource Control
   - Usage monitoring
   - Limit enforcement
   - Resource cleanup
   - Leak prevention
   - Performance tracking

4. Extension Safety
   - State protection
   - Data isolation
   - Error containment
   - Recovery handling
   - Security boundaries

Security:
- Sandbox enforcement
- Resource isolation
- Access control
- Threat mitigation

Cross-cutting:
- Error handling
- Performance monitoring
- Security metrics
- Thread safety

Dependencies:
- hooks.py: Extension lifecycle
- monitor.py: Resource tracking
- validator.py: Security validation
- machine.py: State protection
"""

from typing import Optional, Dict, List, Set, Any
from enum import Enum, auto
from dataclasses import dataclass
from threading import Lock, RLock
from abc import ABC, abstractmethod


class SecurityLevel(Enum):
    """Defines security enforcement levels.
    
    Used to determine security policy strictness.
    """
    STRICT = auto()    # Maximum security
    HIGH = auto()      # High security
    STANDARD = auto()  # Normal security
    RELAXED = auto()   # Minimal security


class ResourceLimit(Enum):
    """Defines resource limitation types.
    
    Used to control resource allocation and usage.
    """
    MEMORY = auto()   # Memory usage limits
    CPU = auto()      # CPU usage limits
    IO = auto()       # I/O operation limits
    NETWORK = auto()  # Network access limits
    STORAGE = auto()  # Storage space limits


class ExtensionSandbox:
    """Manages extension isolation and security.
    
    The ExtensionSandbox class implements the Proxy pattern to
    provide secure extension execution environments.
    
    Class Invariants:
    1. Must maintain isolation
    2. Must enforce security
    3. Must control resources
    4. Must prevent leaks
    5. Must track usage
    6. Must handle violations
    7. Must support recovery
    8. Must log activity
    9. Must optimize performance
    10. Must scale efficiently
    
    Design Patterns:
    - Proxy: Isolates extensions
    - Strategy: Implements policies
    - Observer: Monitors resources
    - Decorator: Adds security
    - Chain: Processes checks
    
    Data Structures:
    - Map for resources
    - Set for permissions
    - Queue for operations
    - Tree for hierarchy
    - Graph for dependencies
    
    Algorithms:
    - Resource allocation
    - Permission checking
    - Threat detection
    - Cleanup tracking
    - Load balancing
    
    Threading/Concurrency Guarantees:
    1. Thread-safe isolation
    2. Atomic operations
    3. Synchronized resources
    4. Safe concurrent access
    5. Lock-free inspection
    6. Mutex protection
    
    Performance Characteristics:
    1. O(1) security checks
    2. O(log n) resource allocation
    3. O(p) permission validation where p is permission count
    4. O(t) threat detection where t is threat count
    5. O(c) cleanup where c is resource count
    
    Resource Management:
    1. Bounded memory usage
    2. Controlled CPU usage
    3. Limited I/O operations
    4. Restricted network access
    5. Managed storage space
    """
    pass


class SecurityManager:
    """Manages security policies and enforcement.
    
    SecurityManager implements security policy definition
    and enforcement for extensions.
    
    Class Invariants:
    1. Must enforce policies
    2. Must track violations
    3. Must handle threats
    4. Must maintain logs
    
    Design Patterns:
    - Strategy: Implements policies
    - Observer: Monitors threats
    - Chain: Processes checks
    
    Threading/Concurrency Guarantees:
    1. Thread-safe enforcement
    2. Atomic operations
    3. Safe concurrent access
    
    Performance Characteristics:
    1. O(1) policy checks
    2. O(v) violation handling where v is violation count
    3. O(t) threat detection where t is threat count
    """
    pass


class ResourceManager:
    """Manages resource allocation and limits.
    
    ResourceManager implements resource control and
    monitoring for extensions.
    
    Class Invariants:
    1. Must track resources
    2. Must enforce limits
    3. Must prevent leaks
    4. Must handle cleanup
    
    Design Patterns:
    - Observer: Monitors usage
    - Strategy: Implements policies
    - Command: Encapsulates actions
    
    Threading/Concurrency Guarantees:
    1. Thread-safe allocation
    2. Atomic operations
    3. Safe concurrent access
    
    Performance Characteristics:
    1. O(1) limit checks
    2. O(r) resource tracking where r is resource count
    3. O(c) cleanup where c is cleanup size
    """
    pass


class IsolationContext:
    """Maintains extension isolation context.
    
    IsolationContext provides isolated execution
    environments for extensions.
    
    Class Invariants:
    1. Must maintain isolation
    2. Must track state
    3. Must handle errors
    4. Must support recovery
    
    Design Patterns:
    - Context: Provides environment
    - Strategy: Implements isolation
    - Memento: Preserves state
    
    Threading/Concurrency Guarantees:
    1. Thread-safe context
    2. Atomic operations
    3. Safe concurrent access
    
    Performance Characteristics:
    1. O(1) context switches
    2. O(s) state tracking where s is state size
    3. O(r) recovery where r is recovery size
    """
    pass


class SecurityMonitor:
    """Monitors security and resource usage.
    
    SecurityMonitor implements security event monitoring
    and resource usage tracking.
    
    Class Invariants:
    1. Must detect threats
    2. Must track usage
    3. Must log events
    4. Must alert violations
    
    Design Patterns:
    - Observer: Monitors system
    - Strategy: Implements detection
    - Chain: Processes events
    
    Threading/Concurrency Guarantees:
    1. Thread-safe monitoring
    2. Atomic updates
    3. Safe concurrent access
    
    Performance Characteristics:
    1. O(1) event processing
    2. O(t) threat detection where t is threat count
    3. O(l) logging where l is log size
    """
    pass


class RecoveryHandler:
    """Handles sandbox recovery operations.
    
    RecoveryHandler implements error recovery and
    cleanup for sandbox violations.
    
    Class Invariants:
    1. Must handle errors
    2. Must restore state
    3. Must clean resources
    4. Must log recovery
    
    Design Patterns:
    - Strategy: Implements recovery
    - Command: Encapsulates actions
    - Memento: Preserves state
    
    Threading/Concurrency Guarantees:
    1. Thread-safe recovery
    2. Atomic operations
    3. Safe concurrent access
    
    Performance Characteristics:
    1. O(e) error handling where e is error count
    2. O(s) state restoration where s is state size
    3. O(c) cleanup where c is cleanup size
    """
    pass

--- END OF FILE: /home/atomik/src/gotstate/gotstate/extensions/sandbox.py ---

--- START OF FILE: /home/atomik/src/gotstate/gotstate/extensions/hooks.py ---
"""
Extension interface and lifecycle management.

Architecture:
- Defines extension interfaces
- Manages extension lifecycle
- Provides customization points
- Coordinates with sandbox
- Integrates with modules

Design Patterns:
- Plugin Pattern: Extension points
- Observer Pattern: Extension events
- Template Method: Hook methods
- Strategy Pattern: Extension behavior
- Chain of Responsibility: Hook chaining

Responsibilities:
1. Extension Interfaces
   - Hook definitions
   - Extension points
   - Interface contracts
   - Version support
   - API stability

2. Lifecycle Management
   - Extension loading
   - Initialization
   - Activation
   - Deactivation
   - Cleanup

3. Customization Points
   - State behavior
   - Event processing
   - Persistence
   - Monitoring
   - Type system

4. Integration
   - Module coordination
   - Event propagation
   - Resource sharing
   - Error handling
   - State access

Security:
- Interface validation
- Resource control
- Access boundaries
- Extension isolation
- Security checks

Cross-cutting:
- Error handling
- Performance monitoring
- Extension metrics
- Thread safety

Dependencies:
- sandbox.py: Extension isolation
- machine.py: State machine access
- monitor.py: Extension monitoring
- validator.py: Interface validation
"""

from typing import Optional, Dict, List, Set, Any, Protocol, TypeVar
from enum import Enum, auto
from dataclasses import dataclass
from threading import Lock, RLock
from abc import ABC, abstractmethod


class HookPhase(Enum):
    """Defines extension hook execution phases.
    
    Used to determine hook execution order and timing.
    """
    PRE = auto()      # Before main operation
    MAIN = auto()     # During main operation
    POST = auto()     # After main operation
    ERROR = auto()    # Error handling
    CLEANUP = auto()  # Resource cleanup


class HookPriority(Enum):
    """Defines hook execution priorities.
    
    Used to determine hook execution order within phases.
    """
    HIGHEST = auto()  # Execute first
    HIGH = auto()     # Execute early
    NORMAL = auto()   # Standard priority
    LOW = auto()      # Execute late
    LOWEST = auto()   # Execute last


class ExtensionHooks(ABC):
    """Defines extension hook interfaces.
    
    The ExtensionHooks class implements the Plugin pattern to
    provide extensible behavior through hook points.
    
    Class Invariants:
    1. Must maintain hook contracts
    2. Must preserve ordering
    3. Must handle lifecycle
    4. Must isolate execution
    5. Must manage resources
    6. Must track metrics
    7. Must support chaining
    8. Must handle errors
    9. Must enforce limits
    10. Must maintain stability
    
    Design Patterns:
    - Plugin: Defines hooks
    - Observer: Notifies events
    - Template: Defines methods
    - Strategy: Implements behavior
    - Chain: Processes hooks
    
    Data Structures:
    - Map for hook registry
    - Queue for execution
    - Graph for dependencies
    - Set for active hooks
    - Tree for hierarchy
    
    Algorithms:
    - Hook resolution
    - Priority sorting
    - Chain execution
    - Error propagation
    - Resource tracking
    
    Threading/Concurrency Guarantees:
    1. Thread-safe execution
    2. Atomic operations
    3. Synchronized state
    4. Safe concurrent access
    5. Lock-free inspection
    6. Mutex protection
    
    Performance Characteristics:
    1. O(1) hook lookup
    2. O(log n) priority sorting
    3. O(c) chain execution where c is chain length
    4. O(d) dependency check where d is dependency count
    5. O(r) resource tracking where r is resource count
    
    Resource Management:
    1. Bounded memory usage
    2. Controlled execution
    3. Resource pooling
    4. Automatic cleanup
    5. Load shedding
    """
    pass


class StateHooks(ExtensionHooks):
    """Defines state behavior extension points.
    
    StateHooks provides customization points for state
    machine behavior and transitions.
    
    Class Invariants:
    1. Must preserve semantics
    2. Must maintain consistency
    3. Must handle transitions
    4. Must track state
    
    Design Patterns:
    - Template: Defines hooks
    - Observer: Monitors state
    - Strategy: Implements behavior
    
    Threading/Concurrency Guarantees:
    1. Thread-safe state access
    2. Atomic transitions
    3. Safe concurrent access
    
    Performance Characteristics:
    1. O(1) hook execution
    2. O(s) state tracking where s is state count
    3. O(t) transition handling where t is transition count
    """
    pass


class EventHooks(ExtensionHooks):
    """Defines event processing extension points.
    
    EventHooks provides customization points for event
    handling and processing.
    
    Class Invariants:
    1. Must preserve order
    2. Must maintain queuing
    3. Must handle priorities
    4. Must track processing
    
    Design Patterns:
    - Observer: Monitors events
    - Chain: Processes events
    - Strategy: Implements handling
    
    Threading/Concurrency Guarantees:
    1. Thread-safe processing
    2. Atomic operations
    3. Safe concurrent access
    
    Performance Characteristics:
    1. O(1) hook execution
    2. O(p) priority handling where p is priority count
    3. O(q) queue management where q is queue size
    """
    pass


class PersistenceHooks(ExtensionHooks):
    """Defines persistence extension points.
    
    PersistenceHooks provides customization points for
    state machine persistence operations.
    
    Class Invariants:
    1. Must maintain consistency
    2. Must handle formats
    3. Must preserve data
    4. Must track versions
    
    Design Patterns:
    - Strategy: Implements persistence
    - Template: Defines operations
    - Chain: Processes steps
    
    Threading/Concurrency Guarantees:
    1. Thread-safe persistence
    2. Atomic operations
    3. Safe concurrent access
    
    Performance Characteristics:
    1. O(1) hook execution
    2. O(d) data handling where d is data size
    3. O(v) version management where v is version count
    """
    pass


class MonitoringHooks(ExtensionHooks):
    """Defines monitoring extension points.
    
    MonitoringHooks provides customization points for
    metrics and monitoring operations.
    
    Class Invariants:
    1. Must track metrics
    2. Must handle events
    3. Must maintain history
    4. Must support queries
    
    Design Patterns:
    - Observer: Monitors system
    - Strategy: Implements collection
    - Chain: Processes metrics
    
    Threading/Concurrency Guarantees:
    1. Thread-safe monitoring
    2. Atomic updates
    3. Safe concurrent access
    
    Performance Characteristics:
    1. O(1) hook execution
    2. O(m) metric handling where m is metric count
    3. O(h) history tracking where h is history size
    """
    pass


class HookManager:
    """Manages extension hook lifecycle.
    
    HookManager implements hook registration, execution,
    and lifecycle management.
    
    Class Invariants:
    1. Must track hooks
    2. Must maintain order
    3. Must handle lifecycle
    4. Must manage resources
    
    Design Patterns:
    - Factory: Creates hooks
    - Observer: Monitors lifecycle
    - Strategy: Implements policies
    
    Threading/Concurrency Guarantees:
    1. Thread-safe management
    2. Atomic operations
    3. Safe concurrent access
    
    Performance Characteristics:
    1. O(1) hook lookup
    2. O(n) lifecycle operations where n is hook count
    3. O(r) resource management where r is resource count
    """
    pass


class HookExecutor:
    """Executes extension hooks.
    
    HookExecutor implements safe and controlled execution
    of extension hooks.
    
    Class Invariants:
    1. Must maintain isolation
    2. Must handle errors
    3. Must track execution
    4. Must enforce limits
    
    Design Patterns:
    - Command: Encapsulates execution
    - Chain: Processes hooks
    - Observer: Reports results
    
    Threading/Concurrency Guarantees:
    1. Thread-safe execution
    2. Atomic operations
    3. Safe concurrent access
    
    Performance Characteristics:
    1. O(1) hook execution
    2. O(c) chain processing where c is chain length
    3. O(e) error handling where e is error count
    """
    pass

--- END OF FILE: /home/atomik/src/gotstate/gotstate/extensions/hooks.py ---

--- START OF FILE: /home/atomik/src/gotstate/gotstate/persistence/__init__.py ---
"""
Persistence package for storage and validation.

Architecture:
- Manages state machine persistence
- Handles definition validation
- Maintains version compatibility
- Coordinates with core components
- Ensures data integrity

Design Patterns:
- Strategy Pattern for storage
- Builder Pattern for loading
- Visitor Pattern for validation
- Chain of Responsibility for rules
- Observer Pattern for changes

Security:
- Data validation
- Format verification
- Version checking
- Resource protection
- Access control

Cross-cutting:
- Error handling
- Performance optimization
- Storage metrics
- Thread safety
"""

from .serializer import Serializer
from .validator import Validator

__all__ = ["Serializer", "Validator"]

--- END OF FILE: /home/atomik/src/gotstate/gotstate/persistence/__init__.py ---

--- START OF FILE: /home/atomik/src/gotstate/gotstate/persistence/serializer.py ---
"""
State machine serialization and persistence management.

Architecture:
- Handles state machine persistence
- Preserves runtime state
- Maintains version compatibility
- Coordinates with Validator
- Integrates with Types

Design Patterns:
- Strategy Pattern: Storage formats
- Builder Pattern: State loading
- Memento Pattern: State capture
- Adapter Pattern: Format conversion
- Factory Pattern: Format handlers

Responsibilities:
1. State Persistence
   - Machine definition
   - Runtime state
   - History states
   - Version information
   - Extension data

2. Format Management
   - Format validation
   - Version compatibility
   - Schema evolution
   - Data migration
   - Format conversion

3. State Recovery
   - State restoration
   - History recovery
   - Version migration
   - Error recovery
   - Partial loading

4. Version Control
   - Version tracking
   - Compatibility checks
   - Breaking changes
   - Migration paths
   - Version metadata

Security:
- Data validation
- Format verification
- Resource limits
- Access control

Cross-cutting:
- Error handling
- Performance optimization
- Storage metrics
- Thread safety

Dependencies:
- validator.py: Format validation
- machine.py: State access
- types.py: Type serialization
- monitor.py: Operation tracking
"""

from typing import Optional, Dict, List, Any, Protocol
from enum import Enum, auto
from dataclasses import dataclass
from threading import Lock, RLock


class SerializationFormat(Enum):
    """Defines supported serialization formats.
    
    Used to determine format-specific handling and validation.
    """
    JSON = auto()    # JSON text format
    BINARY = auto()  # Binary format
    XML = auto()     # XML text format
    YAML = auto()    # YAML text format


class VersionCompatibility(Enum):
    """Defines version compatibility levels.
    
    Used to determine migration and compatibility handling.
    """
    EXACT = auto()     # Exact version match required
    COMPATIBLE = auto() # Compatible versions allowed
    MIGRATION = auto()  # Migration required
    BREAKING = auto()   # Breaking changes present


class Serializer:
    """Manages state machine serialization and persistence.
    
    The Serializer class implements the Strategy pattern to handle
    different serialization formats and version compatibility.
    
    Class Invariants:
    1. Must preserve state consistency
    2. Must maintain version compatibility
    3. Must validate formats
    4. Must handle migrations
    5. Must recover from errors
    6. Must track versions
    7. Must protect data
    8. Must support extensions
    9. Must optimize performance
    10. Must enforce limits
    
    Design Patterns:
    - Strategy: Implements formats
    - Builder: Constructs state
    - Memento: Captures state
    - Adapter: Converts formats
    - Factory: Creates handlers
    
    Data Structures:
    - Map for format handlers
    - Graph for version paths
    - Cache for conversions
    - Queue for migrations
    - Tree for state data
    
    Algorithms:
    - Format detection
    - Version resolution
    - Migration planning
    - State traversal
    - Data validation
    
    Threading/Concurrency Guarantees:
    1. Thread-safe serialization
    2. Atomic state capture
    3. Synchronized migration
    4. Safe concurrent access
    5. Lock-free inspection
    6. Mutex protection
    
    Performance Characteristics:
    1. O(1) format selection
    2. O(n) serialization where n is state size
    3. O(v) version check where v is version count
    4. O(m) migration where m is change count
    5. O(c) conversion where c is complexity
    
    Resource Management:
    1. Bounded memory usage
    2. Controlled I/O
    3. Cache management
    4. Automatic cleanup
    5. Load balancing
    """
    pass


class FormatHandler:
    """Handles format-specific serialization.
    
    FormatHandler implements format-specific serialization
    and deserialization logic.
    
    Class Invariants:
    1. Must handle format correctly
    2. Must validate data
    3. Must maintain consistency
    4. Must support migration
    
    Design Patterns:
    - Strategy: Implements format
    - Validator: Checks format
    - Builder: Constructs data
    
    Threading/Concurrency Guarantees:
    1. Thread-safe handling
    2. Atomic operations
    3. Safe concurrent access
    
    Performance Characteristics:
    1. O(n) serialization where n is data size
    2. O(v) validation where v is rule count
    3. O(c) conversion where c is complexity
    """
    pass


class StateSerializer:
    """Serializes state machine state.
    
    StateSerializer implements efficient state capture and
    restoration with consistency guarantees.
    
    Class Invariants:
    1. Must preserve state
    2. Must maintain hierarchy
    3. Must handle history
    4. Must support partial
    
    Design Patterns:
    - Memento: Captures state
    - Composite: Handles hierarchy
    - Builder: Restores state
    
    Threading/Concurrency Guarantees:
    1. Thread-safe capture
    2. Atomic restoration
    3. Safe concurrent access
    
    Performance Characteristics:
    1. O(s) capture where s is state size
    2. O(h) hierarchy where h is depth
    3. O(r) restoration where r is state count
    """
    pass


class VersionManager:
    """Manages version compatibility and migration.
    
    VersionManager implements version tracking and migration
    path resolution for state machine definitions.
    
    Class Invariants:
    1. Must track versions
    2. Must resolve paths
    3. Must handle breaks
    4. Must validate changes
    
    Design Patterns:
    - Strategy: Implements migration
    - Chain: Processes changes
    - Command: Encapsulates updates
    
    Threading/Concurrency Guarantees:
    1. Thread-safe versioning
    2. Atomic migration
    3. Safe concurrent access
    
    Performance Characteristics:
    1. O(1) version check
    2. O(p) path finding where p is path length
    3. O(m) migration where m is change count
    """
    pass


class MigrationHandler:
    """Handles state machine migrations.
    
    MigrationHandler implements safe migration of state
    machine definitions between versions.
    
    Class Invariants:
    1. Must preserve semantics
    2. Must handle rollback
    3. Must validate results
    4. Must track progress
    
    Design Patterns:
    - Strategy: Implements migration
    - Memento: Preserves state
    - Command: Encapsulates steps
    
    Threading/Concurrency Guarantees:
    1. Thread-safe migration
    2. Atomic steps
    3. Safe concurrent access
    
    Performance Characteristics:
    1. O(s) state migration where s is state size
    2. O(c) change application where c is change count
    3. O(v) validation where v is rule count
    """
    pass


class SerializationCache:
    """Caches serialization results.
    
    SerializationCache implements efficient caching of
    serialization results for improved performance.
    
    Class Invariants:
    1. Must maintain consistency
    2. Must handle eviction
    3. Must track usage
    4. Must limit size
    
    Design Patterns:
    - Strategy: Implements caching
    - Observer: Monitors usage
    - Chain: Processes eviction
    
    Threading/Concurrency Guarantees:
    1. Thread-safe caching
    2. Atomic updates
    3. Safe concurrent access
    
    Performance Characteristics:
    1. O(1) cache lookup
    2. O(e) eviction where e is entry count
    3. O(u) usage tracking where u is user count
    """
    pass

--- END OF FILE: /home/atomik/src/gotstate/gotstate/persistence/serializer.py ---

--- START OF FILE: /home/atomik/src/gotstate/gotstate/persistence/validator.py ---
"""
State machine definition validation management.

Architecture:
- Validates state machine definitions
- Ensures semantic consistency
- Verifies transition rules
- Coordinates with all modules
- Maintains validation boundaries

Design Patterns:
- Visitor Pattern: Structure validation
- Chain of Responsibility: Rule checking
- Strategy Pattern: Validation rules
- Observer Pattern: Validation events
- Composite Pattern: Rule composition

Responsibilities:
1. Definition Validation
   - State hierarchy
   - Transition rules
   - Event definitions
   - Region structure
   - Extension configs

2. Semantic Validation
   - UML compliance
   - State consistency
   - Transition validity
   - Event handling
   - Region coordination

3. Rule Management
   - Rule definition
   - Rule composition
   - Rule priorities
   - Rule dependencies
   - Rule execution

4. Error Handling
   - Error detection
   - Error reporting
   - Error context
   - Recovery options
   - Validation status

Security:
- Input validation
- Rule isolation
- Resource limits
- Access control

Cross-cutting:
- Error handling
- Performance optimization
- Validation metrics
- Thread safety

Dependencies:
- serializer.py: Format validation
- machine.py: Structure access
- types.py: Type validation
- monitor.py: Validation tracking
"""

from typing import Optional, Dict, List, Set, Any
from enum import Enum, auto
from dataclasses import dataclass
from threading import Lock, RLock


class ValidationLevel(Enum):
    """Defines validation detail levels.
    
    Used to control validation depth and resource usage.
    """
    BASIC = auto()    # Basic structure checks
    NORMAL = auto()   # Standard validation level
    STRICT = auto()   # Comprehensive validation
    COMPLETE = auto() # Full semantic validation


class ValidationScope(Enum):
    """Defines validation scope boundaries.
    
    Used to determine validation context and boundaries.
    """
    LOCAL = auto()     # Single component only
    CONNECTED = auto() # Connected components
    REGIONAL = auto()  # Regional scope
    GLOBAL = auto()    # Entire machine


class Validator:
    """Validates state machine definitions and semantics.
    
    The Validator class implements the Visitor pattern to traverse
    and validate state machine structure and semantics.
    
    Class Invariants:
    1. Must validate completely
    2. Must maintain consistency
    3. Must detect all errors
    4. Must track context
    5. Must handle dependencies
    6. Must compose rules
    7. Must report errors
    8. Must support recovery
    9. Must optimize performance
    10. Must enforce limits
    
    Design Patterns:
    - Visitor: Traverses structure
    - Chain: Processes rules
    - Strategy: Implements validation
    - Observer: Reports results
    - Composite: Composes rules
    
    Data Structures:
    - Tree for rule hierarchy
    - Graph for dependencies
    - Stack for context
    - Queue for errors
    - Set for coverage
    
    Algorithms:
    - Tree traversal
    - Rule evaluation
    - Dependency resolution
    - Error aggregation
    - Context tracking
    
    Threading/Concurrency Guarantees:
    1. Thread-safe validation
    2. Atomic rule checks
    3. Synchronized context
    4. Safe concurrent access
    5. Lock-free inspection
    6. Mutex protection
    
    Performance Characteristics:
    1. O(n) traversal where n is node count
    2. O(r) rule evaluation where r is rule count
    3. O(d) dependency check where d is depth
    4. O(e) error reporting where e is error count
    5. O(c) context tracking where c is context size
    
    Resource Management:
    1. Bounded memory usage
    2. Controlled recursion
    3. Rule caching
    4. Automatic cleanup
    5. Load shedding
    """
    pass


class ValidationRule:
    """Represents a validation rule.
    
    ValidationRule implements a single validation check with
    clear scope and dependencies.
    
    Class Invariants:
    1. Must be deterministic
    2. Must be independent
    3. Must handle errors
    4. Must track context
    
    Design Patterns:
    - Strategy: Implements check
    - Command: Encapsulates rule
    - Observer: Reports results
    
    Threading/Concurrency Guarantees:
    1. Thread-safe checking
    2. Atomic evaluation
    3. Safe concurrent access
    
    Performance Characteristics:
    1. O(1) rule setup
    2. O(c) checking where c is complexity
    3. O(d) dependency check where d is dependency count
    """
    pass


class RuleComposite:
    """Composes validation rules.
    
    RuleComposite implements the Composite pattern to build
    complex validation rules from simpler ones.
    
    Class Invariants:
    1. Must maintain hierarchy
    2. Must resolve dependencies
    3. Must aggregate results
    4. Must handle failures
    
    Design Patterns:
    - Composite: Composes rules
    - Chain: Processes rules
    - Observer: Reports results
    
    Threading/Concurrency Guarantees:
    1. Thread-safe composition
    2. Atomic evaluation
    3. Safe concurrent access
    
    Performance Characteristics:
    1. O(n) composition where n is rule count
    2. O(d) dependency resolution where d is depth
    3. O(r) result aggregation where r is result count
    """
    pass


class ValidationContext:
    """Maintains validation context.
    
    ValidationContext tracks validation state and provides
    context for rule evaluation.
    
    Class Invariants:
    1. Must track state
    2. Must maintain scope
    3. Must preserve history
    4. Must support recovery
    
    Design Patterns:
    - Memento: Preserves state
    - Strategy: Implements tracking
    - Observer: Reports changes
    
    Threading/Concurrency Guarantees:
    1. Thread-safe context
    2. Atomic updates
    3. Safe concurrent access
    
    Performance Characteristics:
    1. O(1) state access
    2. O(h) history tracking where h is history size
    3. O(s) scope management where s is scope size
    """
    pass


class ValidationError:
    """Represents a validation error.
    
    ValidationError encapsulates error information with
    context and recovery options.
    
    Class Invariants:
    1. Must contain context
    2. Must be immutable
    3. Must support recovery
    4. Must be reportable
    
    Design Patterns:
    - Memento: Captures context
    - Command: Encapsulates recovery
    - Strategy: Implements reporting
    
    Threading/Concurrency Guarantees:
    1. Thread-safe creation
    2. Immutable state
    3. Safe concurrent access
    
    Performance Characteristics:
    1. O(1) error creation
    2. O(c) context capture where c is context size
    3. O(r) recovery planning where r is option count
    """
    pass


class ValidationReport:
    """Generates validation reports.
    
    ValidationReport aggregates validation results and
    generates comprehensive reports.
    
    Class Invariants:
    1. Must be complete
    2. Must be accurate
    3. Must track coverage
    4. Must support queries
    
    Design Patterns:
    - Builder: Constructs report
    - Strategy: Implements formats
    - Observer: Tracks progress
    
    Threading/Concurrency Guarantees:
    1. Thread-safe generation
    2. Atomic updates
    3. Safe concurrent access
    
    Performance Characteristics:
    1. O(r) report generation where r is result count
    2. O(q) query execution where q is query complexity
    3. O(c) coverage tracking where c is component count
    """
    pass

--- END OF FILE: /home/atomik/src/gotstate/gotstate/persistence/validator.py ---