Class AcceptableCohesionOrError

java.lang.Object

org.ek9lang.compiler.phase5.AcceptableCohesionOrError

All Implemented Interfaces:

Consumer<org.antlr.v4.runtime.tree.ParseTree>

class AcceptableCohesionOrError
extends Object
implements Consumer<org.antlr.v4.runtime.tree.ParseTree>

Checks LCOM4 cohesion against thresholds and emits errors if exceeded. Based on Hitz & Montazeri (1995) "Measuring Coupling and Cohesion In Object-Oriented Systems".

LCOM4 = 1 means perfect cohesion (all methods connected). Higher values suggest the class should be split.

Thresholds:

• class: max 8
• service/component: max 10

Exempt from LCOM4 threshold checking:

• Stateless classes - no fields means no state to share, LCOM4 not meaningful.
• Traits - interface-like with abstract method signatures. Abstract methods have no body, so can't access fields - LCOM4 not meaningful.
• Records - value types (structs) with operators, not OOP classes with methods. Operators are naturally independent by design. Functions operate on records externally.
• Functions - single body, LCOM4 always 1. Unused captures detected by E11018.
• Built-in types - primitive utilities with many independent operators.

Constructor Summary

Constructors

Constructor	Description
AcceptableCohesionOrError(SymbolsAndScopes symbolsAndScopes, ErrorListener errorListener, CohesionTracker cohesionTracker)

Method Summary

Modifier and Type	Method	Description
void	accept(org.antlr.v4.runtime.tree.ParseTree node)

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface Consumer

andThen

Constructor Details

AcceptableCohesionOrError

AcceptableCohesionOrError(SymbolsAndScopes symbolsAndScopes,
 ErrorListener errorListener,
 CohesionTracker cohesionTracker)

Method Details

accept

public void accept(org.antlr.v4.runtime.tree.ParseTree node)

Specified by:

accept in interface Consumer<org.antlr.v4.runtime.tree.ParseTree>