Class CouplingTracker

java.lang.Object
org.ek9lang.compiler.phase5.CouplingTracker
class CouplingTracker extends Object
Tracks efferent coupling (Ce) - the number of external types a construct depends on. Based on CBO (Coupling Between Objects) from Chidamber & Kemerer (1994).

Uses a stack to handle nested constructs (e.g., inner classes). Built-in types from org.ek9.lang are excluded from the count as they are universal primitives that don't contribute to meaningful coupling.

Complexity: O(T) where T = total type references - linear, not N-squared.

  • Constructor Details

    • CouplingTracker

      CouplingTracker()

  • Method Details

    • pushScope

      void pushScope()
      Push a new scope for tracking coupling of a construct.

    • recordDependency

      void recordDependency(ISymbol type)
      Record a type dependency. Filters out built-in types.
      Parameters:
      type - the symbol representing the dependent type

    • popAndGetCouplingCount

      int popAndGetCouplingCount()
      Pop the current scope and return the coupling count.
      Returns:
      the number of unique external type dependencies

    • isEmpty

      boolean isEmpty()
      Check if there are any scopes being tracked.
      Returns:
      true if no scopes are on the stack