Cosmetic code review recommendations (#5)

* Initial plan

* Address cosmetic code review recommendations

Fix spelling errors:
- Train.kt: getAccelaration → getAcceleration (3 occurrences)
- Train.kt: accelaration → acceleration (8 occurrences)

Improve documentation clarity:
- SimulationContext.kt: "aPath" → "path" in javadoc
- SimulationContext.kt: "dependly" → "depending" in javadoc
- Doubleton.kt: "is not contain" → "is not contained" in exception message

Simplify redundant condition:
- Doubleton.kt: Remove redundant null check in constructor equality test

All tests pass. Build successful. No functional changes.


---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: Bedřich Hovorka <bedrich.hovorka@gmail.com>
Co-authored-by: Claude Sonnet 4.5 <noreply@anthropic.com>

Author: 3 people

src/main/kotlin/cz/vutbr/fit/interlockSim/context/SimulationContext.kt

@@ -100,7 +100,7 @@ interface SimulationContext : Context {
 
 	/**
 	 *
-	 * @param separator start of aPath
+	 * @param separator start of path
 	 * @param next first section
 	 * @return a path with all elements, or null if no path found
 	 */
@@ -142,7 +142,7 @@ interface SimulationContext : Context {
 	/**
 	 * @param nodeCell
 	 * @param current from, for determine direction
-	 * @return block, which follow dependly on node configuration, or null if no following block exists
+	 * @return block, which follow depending on node configuration, or null if no following block exists
 	 */
 	fun getNextTrackBlock(
 		nodeCell: NodeCell,

src/main/kotlin/cz/vutbr/fit/interlockSim/sim/Train.kt

@@ -50,7 +50,7 @@ class Train :
 			override fun actions() {
 				if (!started || !context.isReporting(ReportType.TRAIN_CONTINUOUS)) return // opti-hack
 				val builder = StringBuilder()
-				builder.append(getAccelaration()).append(' ')
+				builder.append(getAcceleration()).append(' ')
 				builder.append(getVelocity()).append(' ')
 				builder.append(front.getTotalDistance()).append(' ')
 				// builder.append(tail.getTotalDistance()).append(' ')
@@ -324,7 +324,7 @@ class Train :
 				val semaphore: RailSemaphore = where
 				semaphoreAction(semaphore, semaphore, current, next)
 			} else if (where == timetable.getIn() && next != null) {
-				assert(getAccelaration() != null)
+				assert(getAcceleration() != null)
 				semaphoreAction((where as InOut).getInSemaphore(), where, current, next)
 			} else {
 				@Suppress("RECEIVER_NULLABILITY_MISMATCH_BASED_ON_JAVA_ANNOTATIONS")
@@ -444,7 +444,7 @@ class Train :
 
 			accelerate = false
 			stop()
-			accelaration.state = 0.0
+			acceleration.state = 0.0
 		}
 
 		private fun privateAccelerateTo(
@@ -520,7 +520,7 @@ class Train :
 			if (velocity.state <= 0) velocity.state = 0.0
 
 			val a: Double = ((targetSpeed - velocity.state) * (targetSpeed + velocity.state)) / (2 * s)
-			accelaration.state =
+			acceleration.state =
 				if (currentCondition!!.getStopTest().isDecelarate()) {
 					Math.max(a, this@Train.MINIMAL_DECELERATION.toDouble())
 				} else {
@@ -529,9 +529,9 @@ class Train :
 		}
 	}
 
-	private val accelaration: Variable = Variable(0.0)
+	private val acceleration: Variable = Variable(0.0)
 	private val velocity: Variable = Variable(0.0)
-	private val va: SimpleIntegration = SimpleIntegration(velocity, accelaration)
+	private val va: SimpleIntegration = SimpleIntegration(velocity, acceleration)
 	private val front: Front = Front()
 	private val tail: Tail = Tail()
 	private val motor: Motor = Motor()
@@ -608,7 +608,7 @@ class Train :
 	/**
 	 * @return current acceleration of train
 	 */
-	fun getAccelaration(): Double = accelaration.state
+	fun getAcceleration(): Double = acceleration.state
 
 	/**
 	 * @return current speed of train
@@ -626,20 +626,20 @@ class Train :
 	override fun nextSemaphore(): OrientedPathSeparator? = pathToSemaphore?.getLast()
 
 	override fun start(): Train {
-		accelaration.start()
+		acceleration.start()
 		velocity.start()
 		va.start()
 		return this
 	}
 
 	override fun stop() {
-		accelaration.stop()
+		acceleration.stop()
 		velocity.stop()
 		va.stop()
 		velocity.state = 0.0
 		velocity.rate = 0.0
-		accelaration.rate = 0.0
-		accelaration.state = 0.0
+		acceleration.rate = 0.0
+		acceleration.state = 0.0
 	}
 
 	override fun toString(): String = trainPrefix

src/main/kotlin/cz/vutbr/fit/interlockSim/util/Doubleton.kt

@@ -80,7 +80,7 @@ class Doubleton<T, V> : AbstractSet<T> {
 	 * @param second
 	 */
 	constructor(first: T, second: T) {
-		if (first == second || (first != null && first == second)) throw IllegalArgumentException("arguments is equal")
+		if (first == second) throw IllegalArgumentException("arguments is equal")
 		this.first = first
 		this.second = second
 	}
@@ -130,7 +130,7 @@ class Doubleton<T, V> : AbstractSet<T> {
 			return firstValue
 		}
 		if (secondEq) return secondValue
-		throw IllegalArgumentException("Key $key is not contain in set")
+		throw IllegalArgumentException("Key $key is not contained in set")
 	}
 
 	private fun nullEq(