Module rules 

Evaluation of the strategy DSL (Operand / Condition) against the per-bar history. Operands resolve to a number (or None when an indicator is still warming up); conditions resolve to a boolean (false when any operand is missing). Cross conditions compare the current bar with the previous one.

Structs

BarRow

One bar’s computed state: the bar plus every ready indicator’s value.

RuleState

Engine state the stateful conditions read.

Functions

condition_lookback

How many bars before the current one a condition can reach.

eval_condition

Evaluate a condition at bar idx. Missing operands make a comparison false.

eval_operand

Evaluate an operand at bar idx, or None if it cannot be resolved.

operand_lookback

How many bars before the current one an operand can reach.