from __future__ import annotations

# Lightweight, permissive DSL primitives to support MVP tests.

class Asset:
    def __init__(self, **kwargs):
        self.__dict__.update(kwargs)

class MarketSignal:
    def __init__(self, asset=None, price=0.0, timestamp=0.0, delta=None, meta=None):
        self.asset = asset
        self.price = price
        self.timestamp = timestamp
        self.delta = delta
        self.meta = meta or {}

class StrategyDelta:
    def __init__(self, **kwargs):
        self.__dict__.update(kwargs)

class PlanDelta:
    def __init__(self, **kwargs):
        self.__dict__.update(kwargs)
        # Backwards-compat: expose both 'deltas' and 'delta'
        if hasattr(self, "deltas") and not hasattr(self, "delta"):
            self.delta = self.deltas
        if hasattr(self, "delta") and not hasattr(self, "deltas"):
            self.deltas = self.delta