Add missing 'final' specifiers

core/src/main/java/it/cavallium/warppi/math/functions/Division.java

@@ -62,7 +62,7 @@ public class Division extends FunctionOperator {
 	}
 
 	@Override
-	public <T> T accept(FunctionVisitor<T> visitor) {
+	public <T> T accept(final FunctionVisitor<T> visitor) {
 		return visitor.visit(this);
 	}
 }

core/src/main/java/it/cavallium/warppi/math/functions/EmptyNumber.java

@@ -58,7 +58,7 @@ public class EmptyNumber implements Function {
 	}
 
 	@Override
-	public <T> T accept(FunctionVisitor<T> visitor) {
+	public <T> T accept(final FunctionVisitor<T> visitor) {
 		return visitor.visit(this);
 	}
 

core/src/main/java/it/cavallium/warppi/math/functions/Expression.java

@@ -584,7 +584,7 @@ public class Expression extends FunctionSingle {
 	}
 
 	@Override
-	public <T> T accept(FunctionVisitor<T> visitor) {
+	public <T> T accept(final FunctionVisitor<T> visitor) {
 		return visitor.visit(this);
 	}
 

core/src/main/java/it/cavallium/warppi/math/functions/Joke.java

@@ -63,7 +63,7 @@ public class Joke implements Function {
 	}
 
 	@Override
-	public <T> T accept(FunctionVisitor<T> visitor) {
+	public <T> T accept(final FunctionVisitor<T> visitor) {
 		return visitor.visit(this);
 	}
 

core/src/main/java/it/cavallium/warppi/math/functions/Logarithm.java

@@ -57,7 +57,7 @@ public class Logarithm extends FunctionOperator {
 	}
 
 	@Override
-	public <T> T accept(FunctionVisitor<T> visitor) {
+	public <T> T accept(final FunctionVisitor<T> visitor) {
 		return visitor.visit(this);
 	}
 

core/src/main/java/it/cavallium/warppi/math/functions/Multiplication.java

@@ -85,7 +85,7 @@ public class Multiplication extends FunctionOperator {
 	}
 
 	@Override
-	public <T> T accept(FunctionVisitor<T> visitor) {
+	public <T> T accept(final FunctionVisitor<T> visitor) {
 		return visitor.visit(this);
 	}
 

core/src/main/java/it/cavallium/warppi/math/functions/Negative.java

@@ -51,7 +51,7 @@ public class Negative extends FunctionSingle {
 	}
 
 	@Override
-	public <T> T accept(FunctionVisitor<T> visitor) {
+	public <T> T accept(final FunctionVisitor<T> visitor) {
 		return visitor.visit(this);
 	}
 }

core/src/main/java/it/cavallium/warppi/math/functions/Number.java

@@ -275,7 +275,7 @@ public class Number implements Function {
 	}
 
 	@Override
-	public <T> T accept(FunctionVisitor<T> visitor) {
+	public <T> T accept(final FunctionVisitor<T> visitor) {
 		return visitor.visit(this);
 	}
 

core/src/main/java/it/cavallium/warppi/math/functions/Power.java

@@ -53,7 +53,7 @@ public class Power extends FunctionOperator {
 	}
 
 	@Override
-	public <T> T accept(FunctionVisitor<T> visitor) {
+	public <T> T accept(final FunctionVisitor<T> visitor) {
 		return visitor.visit(this);
 	}
 }

core/src/main/java/it/cavallium/warppi/math/functions/Root.java

@@ -41,7 +41,7 @@ public class Root extends FunctionOperator {
 	}
 
 	@Override
-	public <T> T accept(FunctionVisitor<T> visitor) {
+	public <T> T accept(final FunctionVisitor<T> visitor) {
 		return visitor.visit(this);
 	}
 

core/src/main/java/it/cavallium/warppi/math/functions/RootSquare.java

@@ -50,7 +50,7 @@ public class RootSquare extends FunctionOperator {
 	}
 
 	@Override
-	public <T> T accept(FunctionVisitor<T> visitor) {
+	public <T> T accept(final FunctionVisitor<T> visitor) {
 		return visitor.visit(this);
 	}
 

core/src/main/java/it/cavallium/warppi/math/functions/Subtraction.java

@@ -41,7 +41,7 @@ public class Subtraction extends FunctionOperator {
 	}
 
 	@Override
-	public <T> T accept(FunctionVisitor<T> visitor) {
+	public <T> T accept(final FunctionVisitor<T> visitor) {
 		return visitor.visit(this);
 	}
 

core/src/main/java/it/cavallium/warppi/math/functions/Sum.java

@@ -45,7 +45,7 @@ public class Sum extends FunctionOperator {
 	}
 
 	@Override
-	public <T> T accept(FunctionVisitor<T> visitor) {
+	public <T> T accept(final FunctionVisitor<T> visitor) {
 		return visitor.visit(this);
 	}
 }

core/src/main/java/it/cavallium/warppi/math/functions/SumSubtraction.java

@@ -41,7 +41,7 @@ public class SumSubtraction extends FunctionOperator {
 	}
 
 	@Override
-	public <T> T accept(FunctionVisitor<T> visitor) {
+	public <T> T accept(final FunctionVisitor<T> visitor) {
 		return visitor.visit(this);
 	}
 

core/src/main/java/it/cavallium/warppi/math/functions/Undefined.java

@@ -60,7 +60,7 @@ public class Undefined implements Function {
 	}
 
 	@Override
-	public <T> T accept(FunctionVisitor<T> visitor) {
+	public <T> T accept(final FunctionVisitor<T> visitor) {
 		return visitor.visit(this);
 	}
 

core/src/main/java/it/cavallium/warppi/math/functions/Variable.java

@@ -133,7 +133,7 @@ public class Variable implements Function {
 	}
 
 	@Override
-	public <T> T accept(FunctionVisitor<T> visitor) {
+	public <T> T accept(final FunctionVisitor<T> visitor) {
 		return visitor.visit(this);
 	}
 }

core/src/main/java/it/cavallium/warppi/math/functions/equations/Equation.java

@@ -70,7 +70,7 @@ public class Equation extends FunctionOperator {
 	}
 
 	@Override
-	public <T> T accept(FunctionVisitor<T> visitor) {
+	public <T> T accept(final FunctionVisitor<T> visitor) {
 		return visitor.visit(this);
 	}
 

core/src/main/java/it/cavallium/warppi/math/functions/equations/EquationsSystem.java

@@ -48,7 +48,7 @@ public class EquationsSystem extends FunctionDynamic {
 	}
 
 	@Override
-	public <T> T accept(FunctionVisitor<T> visitor) {
+	public <T> T accept(final FunctionVisitor<T> visitor) {
 		return visitor.visit(this);
 	}
 

core/src/main/java/it/cavallium/warppi/math/functions/equations/EquationsSystemPart.java

@@ -36,7 +36,7 @@ public class EquationsSystemPart extends FunctionSingle {
 	}
 
 	@Override
-	public <T> T accept(FunctionVisitor<T> visitor) {
+	public <T> T accept(final FunctionVisitor<T> visitor) {
 		return visitor.visit(this);
 	}
 

core/src/main/java/it/cavallium/warppi/math/functions/trigonometry/ArcCosine.java

@@ -40,7 +40,7 @@ public class ArcCosine extends FunctionSingle {
 	}
 
 	@Override
-	public <T> T accept(FunctionVisitor<T> visitor) {
+	public <T> T accept(final FunctionVisitor<T> visitor) {
 		return visitor.visit(this);
 	}
 

core/src/main/java/it/cavallium/warppi/math/functions/trigonometry/ArcSine.java

@@ -40,7 +40,7 @@ public class ArcSine extends FunctionSingle {
 	}
 
 	@Override
-	public <T> T accept(FunctionVisitor<T> visitor) {
+	public <T> T accept(final FunctionVisitor<T> visitor) {
 		return visitor.visit(this);
 	}
 

core/src/main/java/it/cavallium/warppi/math/functions/trigonometry/ArcTangent.java

@@ -40,7 +40,7 @@ public class ArcTangent extends FunctionSingle {
 	}
 
 	@Override
-	public <T> T accept(FunctionVisitor<T> visitor) {
+	public <T> T accept(final FunctionVisitor<T> visitor) {
 		return visitor.visit(this);
 	}
 

core/src/main/java/it/cavallium/warppi/math/functions/trigonometry/Cosine.java

@@ -40,7 +40,7 @@ public class Cosine extends FunctionSingle {
 	}
 
 	@Override
-	public <T> T accept(FunctionVisitor<T> visitor) {
+	public <T> T accept(final FunctionVisitor<T> visitor) {
 		return visitor.visit(this);
 	}
 

core/src/main/java/it/cavallium/warppi/math/functions/trigonometry/Sine.java

@@ -53,7 +53,7 @@ public class Sine extends FunctionSingle {
 	}
 
 	@Override
-	public <T> T accept(FunctionVisitor<T> visitor) {
+	public <T> T accept(final FunctionVisitor<T> visitor) {
 		return visitor.visit(this);
 	}
 

core/src/main/java/it/cavallium/warppi/math/functions/trigonometry/Tangent.java

@@ -39,7 +39,7 @@ public class Tangent extends FunctionSingle {
 	}
 
 	@Override
-	public <T> T accept(FunctionVisitor<T> visitor) {
+	public <T> T accept(final FunctionVisitor<T> visitor) {
 		return visitor.visit(this);
 	}
 

core/src/main/java/it/cavallium/warppi/math/rules/dsl/VisitorPattern.java

@@ -18,7 +18,7 @@ import java.util.Optional;
  */
 public abstract class VisitorPattern implements Pattern, FunctionVisitor<Optional<Map<String, Function>>> {
     @Override
-    public Optional<Map<String, Function>> match(Function function) {
+    public Optional<Map<String, Function>> match(final Function function) {
         return function.accept(this);
     }
 
@@ -33,20 +33,20 @@ public abstract class VisitorPattern implements Pattern, FunctionVisitor<Optiona
      *         non-equal sub-functions in the two matches.
      */
     protected Optional<Map<String, Function>> mergeMatches(
-            Map<String, Function> match1,
-            Map<String, Function> match2
+            final Map<String, Function> match1,
+            final Map<String, Function> match2
     ) {
         if (!checkSubFunctionEquality(match1, match2)) {
             return Optional.empty();
         }
 
-        Map<String, Function> merged = new HashMap<>();
+        final Map<String, Function> merged = new HashMap<>();
         merged.putAll(match1);
         merged.putAll(match2);
         return Optional.of(merged);
     }
 
-    private boolean checkSubFunctionEquality(Map<String, Function> match1, Map<String, Function> match2) {
+    private boolean checkSubFunctionEquality(final Map<String, Function> match1, final Map<String, Function> match2) {
         for (Map.Entry<String, Function> leftSubFunction : match1.entrySet()) {
             final String key = leftSubFunction.getKey();
             if (match2.containsKey(key)
@@ -58,127 +58,127 @@ public abstract class VisitorPattern implements Pattern, FunctionVisitor<Optiona
     }
 
     @Override
-    public Optional<Map<String, Function>> visit(ArcCosine arcCosine) {
+    public Optional<Map<String, Function>> visit(final ArcCosine arcCosine) {
         return Optional.empty();
     }
 
     @Override
-    public Optional<Map<String, Function>> visit(ArcSine arcSine) {
+    public Optional<Map<String, Function>> visit(final ArcSine arcSine) {
         return Optional.empty();
     }
 
     @Override
-    public Optional<Map<String, Function>> visit(ArcTangent arcTangent) {
+    public Optional<Map<String, Function>> visit(final ArcTangent arcTangent) {
         return Optional.empty();
     }
 
     @Override
-    public Optional<Map<String, Function>> visit(Cosine cosine) {
+    public Optional<Map<String, Function>> visit(final Cosine cosine) {
         return Optional.empty();
     }
 
     @Override
-    public Optional<Map<String, Function>> visit(Division division) {
+    public Optional<Map<String, Function>> visit(final Division division) {
         return Optional.empty();
     }
 
     @Override
-    public Optional<Map<String, Function>> visit(EmptyNumber emptyNumber) {
+    public Optional<Map<String, Function>> visit(final EmptyNumber emptyNumber) {
         return Optional.empty();
     }
 
     @Override
-    public Optional<Map<String, Function>> visit(Equation equation) {
+    public Optional<Map<String, Function>> visit(final Equation equation) {
         return Optional.empty();
     }
 
     @Override
-    public Optional<Map<String, Function>> visit(EquationsSystem equationsSystem) {
+    public Optional<Map<String, Function>> visit(final EquationsSystem equationsSystem) {
         return Optional.empty();
     }
 
     @Override
-    public Optional<Map<String, Function>> visit(EquationsSystemPart equationsSystemPart) {
+    public Optional<Map<String, Function>> visit(final EquationsSystemPart equationsSystemPart) {
         return Optional.empty();
     }
 
     @Override
-    public Optional<Map<String, Function>> visit(Expression expression) {
+    public Optional<Map<String, Function>> visit(final Expression expression) {
         return Optional.empty();
     }
 
     @Override
-    public Optional<Map<String, Function>> visit(Joke joke) {
+    public Optional<Map<String, Function>> visit(final Joke joke) {
         return Optional.empty();
     }
 
     @Override
-    public Optional<Map<String, Function>> visit(Logarithm logarithm) {
+    public Optional<Map<String, Function>> visit(final Logarithm logarithm) {
         return Optional.empty();
     }
 
     @Override
-    public Optional<Map<String, Function>> visit(Multiplication multiplication) {
+    public Optional<Map<String, Function>> visit(final Multiplication multiplication) {
         return Optional.empty();
     }
 
     @Override
-    public Optional<Map<String, Function>> visit(Negative negative) {
+    public Optional<Map<String, Function>> visit(final Negative negative) {
         return Optional.empty();
     }
 
     @Override
-    public Optional<Map<String, Function>> visit(Number number) {
+    public Optional<Map<String, Function>> visit(final Number number) {
         return Optional.empty();
     }
 
     @Override
-    public Optional<Map<String, Function>> visit(Power power) {
+    public Optional<Map<String, Function>> visit(final Power power) {
         return Optional.empty();
     }
 
     @Override
-    public Optional<Map<String, Function>> visit(Root root) {
+    public Optional<Map<String, Function>> visit(final Root root) {
         return Optional.empty();
     }
 
     @Override
-    public Optional<Map<String, Function>> visit(RootSquare rootSquare) {
+    public Optional<Map<String, Function>> visit(final RootSquare rootSquare) {
         return Optional.empty();
     }
 
     @Override
-    public Optional<Map<String, Function>> visit(Sine sine) {
+    public Optional<Map<String, Function>> visit(final Sine sine) {
         return Optional.empty();
     }
 
     @Override
-    public Optional<Map<String, Function>> visit(Subtraction subtraction) {
+    public Optional<Map<String, Function>> visit(final Subtraction subtraction) {
         return Optional.empty();
     }
 
     @Override
-    public Optional<Map<String, Function>> visit(SumSubtraction sumSubtraction) {
+    public Optional<Map<String, Function>> visit(final SumSubtraction sumSubtraction) {
         return Optional.empty();
     }
 
     @Override
-    public Optional<Map<String, Function>> visit(Sum sum) {
+    public Optional<Map<String, Function>> visit(final Sum sum) {
         return Optional.empty();
     }
 
     @Override
-    public Optional<Map<String, Function>> visit(Tangent tangent) {
+    public Optional<Map<String, Function>> visit(final Tangent tangent) {
         return Optional.empty();
     }
 
     @Override
-    public Optional<Map<String, Function>> visit(Undefined undefined) {
+    public Optional<Map<String, Function>> visit(final Undefined undefined) {
         return Optional.empty();
     }
 
     @Override
-    public Optional<Map<String, Function>> visit(Variable variable) {
+    public Optional<Map<String, Function>> visit(final Variable variable) {
         return Optional.empty();
     }
 }

core/src/main/java/it/cavallium/warppi/math/rules/dsl/patterns/NegativePattern.java

@@ -15,17 +15,17 @@ import java.util.Optional;
 public class NegativePattern extends VisitorPattern {
     private final Pattern inner;
 
-    public NegativePattern(Pattern inner) {
+    public NegativePattern(final Pattern inner) {
         this.inner = inner;
     }
 
     @Override
-    public Optional<Map<String, Function>> visit(Negative negative) {
+    public Optional<Map<String, Function>> visit(final Negative negative) {
         return inner.match(negative.getParameter());
     }
 
     @Override
-    public Function replace(MathContext mathContext, Map<String, Function> subFunctions) {
+    public Function replace(final MathContext mathContext, final Map<String, Function> subFunctions) {
         return new Negative(
                 mathContext,
                 inner.replace(mathContext, subFunctions)

core/src/main/java/it/cavallium/warppi/math/rules/dsl/patterns/NumberPattern.java

@@ -16,12 +16,12 @@ import java.util.Optional;
 public class NumberPattern extends VisitorPattern {
     private final BigDecimal value;
 
-    public NumberPattern(BigDecimal value) {
+    public NumberPattern(final BigDecimal value) {
         this.value = value;
     }
 
     @Override
-    public Optional<Map<String, Function>> visit(Number number) {
+    public Optional<Map<String, Function>> visit(final Number number) {
         if (number.getTerm().compareTo(value) == 0) {
             return Optional.of(new HashMap<>());
         } else {
@@ -30,7 +30,7 @@ public class NumberPattern extends VisitorPattern {
     }
 
     @Override
-    public Function replace(MathContext mathContext, Map<String, Function> subFunctions) {
+    public Function replace(final MathContext mathContext, final Map<String, Function> subFunctions) {
         return new Number(mathContext, value);
     }
 }

core/src/main/java/it/cavallium/warppi/math/rules/dsl/patterns/SubFunctionPattern.java

@@ -14,19 +14,19 @@ import java.util.Optional;
 public class SubFunctionPattern implements Pattern {
     private final String name;
 
-    public SubFunctionPattern(String name) {
+    public SubFunctionPattern(final String name) {
         this.name = name;
     }
 
     @Override
-    public Optional<Map<String, Function>> match(Function function) {
-        HashMap<String, Function> subFunctions = new HashMap<>();
+    public Optional<Map<String, Function>> match(final Function function) {
+        final HashMap<String, Function> subFunctions = new HashMap<>();
         subFunctions.put(name, function);
         return Optional.of(subFunctions);
     }
 
     @Override
-    public Function replace(MathContext mathContext, Map<String, Function> subFunctions) {
+    public Function replace(final MathContext mathContext, final Map<String, Function> subFunctions) {
         return subFunctions.get(name);
     }
 }

core/src/main/java/it/cavallium/warppi/math/rules/dsl/patterns/SumPattern.java

@@ -16,13 +16,13 @@ public class SumPattern extends VisitorPattern {
     private final Pattern left;
     private final Pattern right;
 
-    public SumPattern(Pattern left, Pattern right) {
+    public SumPattern(final Pattern left, final Pattern right) {
         this.left = left;
         this.right = right;
     }
 
     @Override
-    public Optional<Map<String, Function>> visit(Sum sum) {
+    public Optional<Map<String, Function>> visit(final Sum sum) {
         return left.match(sum.getParameter1())
                 .flatMap(leftMatch -> right.match(sum.getParameter2())
                         .flatMap(rightMatch -> mergeMatches(leftMatch, rightMatch))
@@ -30,7 +30,7 @@ public class SumPattern extends VisitorPattern {
     }
 
     @Override
-    public Function replace(MathContext mathContext, Map<String, Function> subFunctions) {
+    public Function replace(final MathContext mathContext, final Map<String, Function> subFunctions) {
         return new Sum(
                 mathContext,
                 left.replace(mathContext, subFunctions),