Implement analyzer for salary-calculator

src/main/java/analyzer/AnalyzerRoot.java

@@ -8,6 +8,7 @@
 import analyzer.exercises.leap.LeapAnalyzer;
 import analyzer.exercises.loglevels.LogLevelsAnalyzer;
 import analyzer.exercises.needforspeed.NeedForSpeedAnalyzer;
+import analyzer.exercises.salarycalculator.SalaryCalculatorAnalyzer;
 import analyzer.exercises.secrets.SecretsAnalyzer;
 import analyzer.exercises.twofer.TwoferAnalyzer;
 import analyzer.exercises.wizardsandwarriors.WizardsAndWarriorsAnalyzer;
@@ -56,6 +57,7 @@ private static List<Analyzer> createAnalyzers(String slug) {
             case "leap" -> analyzers.add(new LeapAnalyzer());
             case "log-levels" -> analyzers.add(new LogLevelsAnalyzer());
             case "need-for-speed" -> analyzers.add(new NeedForSpeedAnalyzer());
+            case "salary-calculator" -> analyzers.add(new SalaryCalculatorAnalyzer());
             case "secrets" -> analyzers.add(new SecretsAnalyzer());
             case "two-fer" -> analyzers.add(new TwoferAnalyzer());
             case "wizards-and-warriors" -> analyzers.add(new WizardsAndWarriorsAnalyzer());

src/main/java/analyzer/exercises/salarycalculator/SalaryCalculatorAnalyzer.java

@@ -0,0 +1,73 @@
+package analyzer.exercises.salarycalculator;
+
+import com.github.javaparser.ast.CompilationUnit;
+import com.github.javaparser.ast.body.MethodDeclaration;
+import com.github.javaparser.ast.expr.ConditionalExpr;
+import com.github.javaparser.ast.expr.MethodCallExpr;
+import com.github.javaparser.ast.visitor.VoidVisitorAdapter;
+
+import analyzer.Analyzer;
+import analyzer.OutputCollector;
+import analyzer.Solution;
+import analyzer.comments.ExemplarSolution;
+import analyzer.comments.ReuseCode;
+
+/**
+ * The {@link SalaryCalculatorAnalyzer} is the analyzer implementation for the {@code salary-calculator} practice exercise.
+ * It extends from the {@link VoidVisitorAdapter} and uses the visitor pattern to traverse each compilation unit.
+ * 
+ * @see <a href="https://github.com/exercism/java/tree/main/exercises/concept/salary-calculator">The salary-calculator exercise on the Java track</a>
+ */
+public class SalaryCalculatorAnalyzer extends VoidVisitorAdapter<OutputCollector> implements Analyzer {
+    private static final String EXERCISE_NAME = "Salary Calculator";
+    private static final String SALARY_MULTIPLIER = "salaryMultiplier";
+    private static final String BONUS_MULTIPLIER = "bonusMultiplier";
+    private static final String FINAL_SALARY = "finalSalary";
+    private static final String BONUS_FOR_PRODUCTS_SOLD = "bonusForProductsSold";
+    private boolean essentialCommentAdded = false;
+
+    @Override
+    public void analyze(Solution solution, OutputCollector output) {
+        for (CompilationUnit compilationUnit : solution.getCompilationUnits()) {
+            compilationUnit.accept(this, output);
+        }
+
+        if (output.getComments().isEmpty()) {
+            output.addComment(new ExemplarSolution(EXERCISE_NAME));
+        }
+    }
+
+    @Override
+    public void visit(MethodDeclaration node, OutputCollector output) {
+        if (!essentialCommentAdded && isMethodThatMustContainTernaryOperators(node) && doesNotHasTernaryOperators(node)) {
+            output.addComment(new UseTernaryOperators(node.getNameAsString()));
+            essentialCommentAdded = true;
+        }
+
+        if (!essentialCommentAdded && node.getNameAsString().equals(BONUS_FOR_PRODUCTS_SOLD) && doesNotCallMethod(node, BONUS_MULTIPLIER)) {
+            output.addComment(new ReuseCode(BONUS_FOR_PRODUCTS_SOLD, BONUS_MULTIPLIER));
+        }
+
+        if (!essentialCommentAdded && node.getNameAsString().equals(FINAL_SALARY) && doesNotCallMethod(node, SALARY_MULTIPLIER)) {
+            output.addComment(new ReuseCode(FINAL_SALARY, SALARY_MULTIPLIER));
+        }
+
+        if (!essentialCommentAdded && node.getNameAsString().equals(FINAL_SALARY) && doesNotCallMethod(node, BONUS_FOR_PRODUCTS_SOLD)) {
+            output.addComment(new ReuseCode(FINAL_SALARY, BONUS_FOR_PRODUCTS_SOLD));
+        }
+
+        super.visit(node, output);
+    }
+
+    private static boolean isMethodThatMustContainTernaryOperators(MethodDeclaration node) {
+        return node.getNameAsString().equals(SALARY_MULTIPLIER) || node.getNameAsString().equals(BONUS_MULTIPLIER) || node.getNameAsString().equals(FINAL_SALARY);
+    }
+
+    private static boolean doesNotHasTernaryOperators(MethodDeclaration node) {
+        return node.findAll(ConditionalExpr.class).isEmpty();
+    }
+
+    private static boolean doesNotCallMethod(MethodDeclaration node, String otherMethodName) {
+        return node.findAll(MethodCallExpr.class, x -> x.getNameAsString().contains(otherMethodName)).isEmpty();
+    }
+}

src/main/java/analyzer/exercises/salarycalculator/UseTernaryOperators.java

@@ -0,0 +1,32 @@
+package analyzer.exercises.salarycalculator;
+
+import java.util.Map;
+
+import analyzer.Comment;
+
+/**
+ * @see <a href="https://github.com/exercism/website-copy/blob/main/analyzer-comments/java/salary-calculator/use_ternary_operators.md">Markdown Template</a>
+ */
+class UseTernaryOperators extends Comment {
+    private final String inMethod;
+
+    public UseTernaryOperators(String inMethod) {
+        this.inMethod = inMethod;
+    }
+
+    @Override
+    public String getKey() {
+        return "java.salary-calculator.use_ternary_operators";
+    }
+
+    @Override
+    public Map<String, String> getParameters() {
+        return Map.of(
+                "inMethod", this.inMethod);
+    }
+
+    @Override
+    public Type getType() {
+        return Type.ESSENTIAL;
+    }
+}

src/test/java/analyzer/AnalyzerIntegrationTest.java

@@ -184,4 +184,25 @@ void wizardsandwarriors(String scenario) throws IOException {
 
         Approvals.verify(serialize(output.analysis()), Approvals.NAMES.withParameters(scenario));
     }
+
+    @ParameterizedTest
+    @ValueSource(strings = {
+            "ExemplarSolution",
+            "NoReuseBonusForProductsSold",
+            "NoReuseBonusMultiplier",
+            "NoReuseSalaryMultiplier",
+            "NotReusingMethodsAtAll",
+            "NotUsingTernaryOperatorsAndNotReusingMethods",
+            "NotUsingTernaryOperatorsAtAll",
+            "NotUsingTernaryOperatorsOnBonusMultiplier",
+            "NotUsingTernaryOperatorsOnFinalSalary",
+            "NotUsingTernaryOperatorsOnSalaryMultiplier"
+    })
+    void salarycalculator(String scenario) throws IOException {
+        var path = Path.of("salary-calculator", scenario + ".java");
+        var solution = new SolutionFromFiles("salary-calculator", SCENARIOS.resolve(path));
+        var output = AnalyzerRoot.analyze(solution);
+
+        Approvals.verify(serialize(output.analysis()), Approvals.NAMES.withParameters(scenario));
+    }
 }

src/test/resources/analyzer/AnalyzerIntegrationTest.salarycalculator.ExemplarSolution.approved.txt

@@ -0,0 +1,11 @@
+{
+  "comments": [
+    {
+      "comment": "java.general.exemplar",
+      "params": {
+        "exerciseName": "Salary Calculator"
+      },
+      "type": "celebratory"
+    }
+  ]
+}

src/test/resources/analyzer/AnalyzerIntegrationTest.salarycalculator.NoReuseBonusForProductsSold.approved.txt

@@ -0,0 +1,17 @@
+{
+  "comments": [
+    {
+      "comment": "java.general.reuse_code",
+      "params": {
+        "callingMethod": "finalSalary",
+        "methodToCall": "bonusForProductsSold"
+      },
+      "type": "actionable"
+    },
+    {
+      "comment": "java.general.feedback_request",
+      "params": {},
+      "type": "informative"
+    }
+  ]
+}

src/test/resources/analyzer/AnalyzerIntegrationTest.salarycalculator.NoReuseBonusMultiplier.approved.txt

@@ -0,0 +1,17 @@
+{
+  "comments": [
+    {
+      "comment": "java.general.reuse_code",
+      "params": {
+        "callingMethod": "bonusForProductsSold",
+        "methodToCall": "bonusMultiplier"
+      },
+      "type": "actionable"
+    },
+    {
+      "comment": "java.general.feedback_request",
+      "params": {},
+      "type": "informative"
+    }
+  ]
+}

src/test/resources/analyzer/AnalyzerIntegrationTest.salarycalculator.NoReuseSalaryMultiplier.approved.txt

@@ -0,0 +1,17 @@
+{
+  "comments": [
+    {
+      "comment": "java.general.reuse_code",
+      "params": {
+        "callingMethod": "finalSalary",
+        "methodToCall": "salaryMultiplier"
+      },
+      "type": "actionable"
+    },
+    {
+      "comment": "java.general.feedback_request",
+      "params": {},
+      "type": "informative"
+    }
+  ]
+}

src/test/resources/analyzer/AnalyzerIntegrationTest.salarycalculator.NotReusingMethodsAtAll.approved.txt

@@ -0,0 +1,33 @@
+{
+  "comments": [
+    {
+      "comment": "java.general.reuse_code",
+      "params": {
+        "callingMethod": "bonusForProductsSold",
+        "methodToCall": "bonusMultiplier"
+      },
+      "type": "actionable"
+    },
+    {
+      "comment": "java.general.reuse_code",
+      "params": {
+        "callingMethod": "finalSalary",
+        "methodToCall": "salaryMultiplier"
+      },
+      "type": "actionable"
+    },
+    {
+      "comment": "java.general.reuse_code",
+      "params": {
+        "callingMethod": "finalSalary",
+        "methodToCall": "bonusForProductsSold"
+      },
+      "type": "actionable"
+    },
+    {
+      "comment": "java.general.feedback_request",
+      "params": {},
+      "type": "informative"
+    }
+  ]
+}

src/test/resources/analyzer/AnalyzerIntegrationTest.salarycalculator.NotUsingTernaryOperatorsAndNotReusingMethods.approved.txt

@@ -0,0 +1,16 @@
+{
+  "comments": [
+    {
+      "comment": "java.salary-calculator.use_ternary_operators",
+      "params": {
+        "inMethod": "salaryMultiplier"
+      },
+      "type": "essential"
+    },
+    {
+      "comment": "java.general.feedback_request",
+      "params": {},
+      "type": "informative"
+    }
+  ]
+}

src/test/resources/analyzer/AnalyzerIntegrationTest.salarycalculator.NotUsingTernaryOperatorsAtAll.approved.txt

@@ -0,0 +1,16 @@
+{
+  "comments": [
+    {
+      "comment": "java.salary-calculator.use_ternary_operators",
+      "params": {
+        "inMethod": "salaryMultiplier"
+      },
+      "type": "essential"
+    },
+    {
+      "comment": "java.general.feedback_request",
+      "params": {},
+      "type": "informative"
+    }
+  ]
+}

src/test/resources/analyzer/AnalyzerIntegrationTest.salarycalculator.NotUsingTernaryOperatorsOnBonusMultiplier.approved.txt

@@ -0,0 +1,16 @@
+{
+  "comments": [
+    {
+      "comment": "java.salary-calculator.use_ternary_operators",
+      "params": {
+        "inMethod": "bonusMultiplier"
+      },
+      "type": "essential"
+    },
+    {
+      "comment": "java.general.feedback_request",
+      "params": {},
+      "type": "informative"
+    }
+  ]
+}

src/test/resources/analyzer/AnalyzerIntegrationTest.salarycalculator.NotUsingTernaryOperatorsOnFinalSalary.approved.txt

@@ -0,0 +1,16 @@
+{
+  "comments": [
+    {
+      "comment": "java.salary-calculator.use_ternary_operators",
+      "params": {
+        "inMethod": "finalSalary"
+      },
+      "type": "essential"
+    },
+    {
+      "comment": "java.general.feedback_request",
+      "params": {},
+      "type": "informative"
+    }
+  ]
+}

src/test/resources/analyzer/AnalyzerIntegrationTest.salarycalculator.NotUsingTernaryOperatorsOnSalaryMultiplier.approved.txt

@@ -0,0 +1,16 @@
+{
+  "comments": [
+    {
+      "comment": "java.salary-calculator.use_ternary_operators",
+      "params": {
+        "inMethod": "salaryMultiplier"
+      },
+      "type": "essential"
+    },
+    {
+      "comment": "java.general.feedback_request",
+      "params": {},
+      "type": "informative"
+    }
+  ]
+}

src/test/resources/scenarios/salary-calculator/ExemplarSolution.java

@@ -0,0 +1,21 @@
+package scenarios.salarycalculator;
+
+public class SalaryCalculator {
+
+    public double salaryMultiplier(int daysSkipped) {
+        return daysSkipped < 5 ? 1 : 0.85;
+    }
+
+    public int bonusMultiplier(int productsSold) {
+        return productsSold < 20 ? 10 : 13;
+    }
+
+    public double bonusForProductsSold (int productsSold) {
+        return productsSold * bonusMultiplier(productsSold);
+    }
+
+    public double finalSalary (int daysSkipped, int productsSold) {
+        double finalSalary = 1000.0 * salaryMultiplier(daysSkipped) + bonusForProductsSold(productsSold);
+        return finalSalary > 2000.0 ? 2000.0 : finalSalary;
+    }
+}

src/test/resources/scenarios/salary-calculator/NoReuseBonusForProductsSold.java

@@ -0,0 +1,21 @@
+package scenarios.salarycalculator;
+
+public class SalaryCalculator {
+
+    public double salaryMultiplier(int daysSkipped) {
+        return daysSkipped < 5 ? 1 : 0.85;
+    }
+
+    public int bonusMultiplier(int productsSold) {
+        return productsSold < 20 ? 10 : 13;
+    }
+
+    public double bonusForProductsSold (int productsSold) {
+        return productsSold * bonusMultiplier(productsSold);
+    }
+
+    public double finalSalary (int daysSkipped, int productsSold) {
+        double finalSalary = 1000.0 * salaryMultiplier(daysSkipped) + productsSold * bonusMultiplier(productsSold);
+        return finalSalary > 2000.0 ? 2000.0 : finalSalary;
+    }
+}