Set compliance level to 19, add test cases for record classes and switch expressions

Note that support for Java 20 and 21 is not yet added to Spoon.

Author: sanderploegsma

src/main/java/representer/Representer.java

@@ -2,6 +2,7 @@
 
 import representer.processors.*;
 import spoon.Launcher;
+import spoon.compiler.builder.ComplianceOptions;
 import spoon.reflect.CtModel;
 import spoon.reflect.declaration.CtType;
 
@@ -11,6 +12,7 @@ public static Representation generate(String path) {
         var placeholders = new Placeholders();
 
         var launcher = new Launcher();
+        launcher.getEnvironment().setComplianceLevel(19);
         launcher.addInputResource(path);
         launcher.addProcessor(new RenameTypes(placeholders));
         launcher.addProcessor(new RenameMethods(placeholders));

src/test/java/representer/RepresenterTest.java

@@ -21,7 +21,9 @@ private static Stream<String> scenarios() {
                 "class-with-nested-enum",
                 "lambda-arguments",
                 "generic-type-arguments",
-                "if-statements-without-block-bodies"
+                "if-statements-without-block-bodies",
+                "record-class",
+                "switch-expression"
         );
     }
 

src/test/resources/representer/RepresenterTest.testRepresentation.record-class.approved.txt

@@ -0,0 +1,4 @@
+record PLACEHOLDER_01(java.lang.String field) {
+    void PLACEHOLDER_03(int PLACEHOLDER_06) {
+    }
+}

src/test/resources/representer/RepresenterTest.testRepresentation.switch-expression.approved.txt

@@ -0,0 +1,12 @@
+class PLACEHOLDER_01 {
+    int PLACEHOLDER_02(java.lang.String PLACEHOLDER_03) {
+        return switch (PLACEHOLDER_03) {
+            case "Lord of the Rings" ->
+                5;
+            case "Harry Potter" ->
+                4;
+            default ->
+                -1;
+        };
+    }
+}

src/test/resources/scenarios/record-class/Record.java

@@ -0,0 +1,4 @@
+record Record(String field) {
+    void method(int argument) {
+    }
+}

src/test/resources/scenarios/switch-expression/SwitchExpression.java

@@ -0,0 +1,9 @@
+class SwitchExpression {
+    int rate(String book) {
+        return switch (book) {
+            case "Lord of the Rings" -> 5;
+            case "Harry Potter" -> 4;
+            default -> -1;
+        };
+    }
+}