review: fix: Adjust the source position for annotated enum values

src/main/java/spoon/support/compiler/jdt/PositionBuilder.java

@@ -420,9 +420,17 @@ SourcePosition buildPositionCtElement(CtElement e, ASTNode node) {
 			AllocationExpression allocationExpression = (AllocationExpression) node;
 			if (allocationExpression.enumConstant != null) {
 				FieldDeclaration fieldDeclaration = allocationExpression.enumConstant;
-				//1) skip comments
+
+				//1) skip the annotations
+				Annotation[] annotations = allocationExpression.enumConstant.annotations;
+				if (annotations != null && annotations.length > 0) {
+					Annotation lastAnnotation = annotations[annotations.length - 1];
+					sourceStart = findNextNonWhitespace(contents, sourceEnd, lastAnnotation.sourceEnd);
+				}
+
+				//2) skip comments
 				sourceStart = findNextNonWhitespace(contents, sourceEnd, sourceStart);
-				//2) move to beginning of enum construction
+				//3) move to beginning of enum construction
 				sourceStart += fieldDeclaration.name.length;
 			}
 		} else if (node instanceof CaseStatement) {

src/test/java/spoon/test/prettyprinter/SniperAnnotatedEnumTest.java

@@ -0,0 +1,60 @@
+package spoon.test.prettyprinter;
+
+import static org.hamcrest.MatcherAssert.assertThat;
+
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+
+import org.apache.commons.io.FileUtils;
+import org.hamcrest.CoreMatchers;
+import org.junit.jupiter.api.BeforeAll;
+
+import spoon.Launcher;
+import spoon.compiler.Environment;
+import spoon.reflect.CtModel;
+import spoon.reflect.code.CtComment.CommentType;
+import spoon.reflect.declaration.CtClass;
+import spoon.reflect.visitor.filter.TypeFilter;
+import spoon.support.sniper.SniperJavaPrettyPrinter;
+import spoon.test.GitHubIssue;
+
+public class SniperAnnotatedEnumTest {
+  private static final Path INPUT_PATH = Paths.get("src/test/java/");
+  private static final Path OUTPUT_PATH = Paths.get("target/test-output");
+
+  @BeforeAll
+  public static void setup() throws IOException {
+    FileUtils.deleteDirectory(OUTPUT_PATH.toFile());
+  }
+
+  @GitHubIssue(issueNumber = 4779, fixed = true)
+  public void annotatedEnumTest() throws IOException {
+    runSniperJavaPrettyPrinter("spoon/test/prettyprinter/testclasses/AnnotatedEnum.java");
+  }
+
+  private void runSniperJavaPrettyPrinter(String path) throws IOException {
+    final Launcher launcher = new Launcher();
+    final Environment e = launcher.getEnvironment();
+    e.setLevel("INFO");
+    e.setPrettyPrinterCreator(() -> new SniperJavaPrettyPrinter(e));
+
+    launcher.addInputResource(INPUT_PATH.resolve(path).toString());
+    launcher.setSourceOutputDirectory(OUTPUT_PATH.toString());
+
+    CtModel model = launcher.buildModel();
+    CtClass ctClass = model.getElements(new TypeFilter<>(CtClass.class)).get(0);
+
+    ctClass.addComment(launcher.getFactory().Code().createComment("test", CommentType.BLOCK));
+
+    launcher.process();
+    launcher.prettyprint();
+    // Verify result file exists and is not empty
+    assertThat("Output file for " + path + " should exist", OUTPUT_PATH.resolve(path).toFile().exists(),
+        CoreMatchers.equalTo(true));
+
+    String content = Files.readString(OUTPUT_PATH.resolve(path));
+    assertThat(content.trim(), CoreMatchers.containsString("/* test */public enum"));
+  }
+}

src/test/java/spoon/test/prettyprinter/testclasses/AnnotatedEnum.java

@@ -0,0 +1,22 @@
+package spoon.test.prettyprinter.testclasses;
+
+public enum AnnotatedEnum {
+    ONE(1, "one"),
+    TWO(2, "two"),
+    THREE(3, "three"),
+    /**
+     * @deprecated
+     */
+    @Deprecated
+    // There was a typo...
+    FOR(4, "for"),
+    FOUR(4, "four");
+
+    private final int value;
+    private final String text;
+
+    AnnotatedEnum(int value, String text) {
+        this.value = value;
+        this.text = text;
+    }
+}