Fix spaces around type parameters in class/interface/record declarations #443

Author: mateusz-matela

org.eclipse.jdt.core.tests.model/src/org/eclipse/jdt/core/tests/formatter/FormatterBugsTests.java

@@ -29,6 +29,7 @@
 import org.eclipse.jdt.core.formatter.CodeFormatter;
 import org.eclipse.jdt.core.formatter.DefaultCodeFormatterConstants;
 import org.eclipse.jdt.core.formatter.IndentManipulation;
+import org.eclipse.jdt.internal.compiler.impl.CompilerOptions;
 import org.eclipse.jdt.internal.formatter.DefaultCodeFormatter;
 import org.eclipse.jdt.internal.formatter.DefaultCodeFormatterOptions;
 import org.eclipse.jdt.internal.formatter.DefaultCodeFormatterOptions.Alignment;
@@ -13305,4 +13306,24 @@ public void testBug576954() {
 		"	}\n" +
 		"}");
 }
+/**
+ * https://github.com/eclipse-jdt/eclipse.jdt.core/issues/443
+ */
+public void testIssue443a() {
+	setComplianceLevel(CompilerOptions.VERSION_17);
+	this.formatterPrefs.insert_space_after_closing_angle_bracket_in_type_parameters = true;
+	formatSource(
+		"record MyRecord<A>() {\n" +
+		"}");
+}
+public void testIssue443b() {
+	setComplianceLevel(CompilerOptions.VERSION_17);
+	this.formatterPrefs.insert_space_after_closing_angle_bracket_in_type_parameters = false;
+	formatSource(
+		"class MyClass<A> extends AnotherClass {\n" +
+		"}\n" +
+		"\n" +
+		"sealed interface Expr<A> permits MathExpr {\n" +
+		"}");
+}
 }

org.eclipse.jdt.core/formatter/org/eclipse/jdt/internal/formatter/SpacePreparator.java

@@ -182,10 +182,12 @@ public boolean visit(TypeDeclaration node) {
 		List<TypeParameter> typeParameters = node.typeParameters();
 		handleTypeParameters(typeParameters);
 
-		if (!node.isInterface() && !node.superInterfaceTypes().isEmpty()) {
-			// fix for: class A<E> extends ArrayList<String>implements Callable<String>
-			handleToken(node.getName(), TokenNameimplements, true, false);
-		}
+		if (!node.superInterfaceTypes().isEmpty())
+			handleTokenAfter(node.getName(), node.isInterface() ? TokenNameextends : TokenNameimplements, true, true);
+		if (node.getSuperclassType() != null)
+			handleTokenAfter(node.getName(), TokenNameextends, true, true);
+		if (!node.permittedTypes().isEmpty())
+			handleTokenAfter(node.getName(), TokenNameRestrictedIdentifierpermits, true, true);
 
 		handleToken(node.getName(), TokenNameLBRACE,
 				this.options.insert_space_before_opening_brace_in_type_declaration, false);
@@ -366,7 +368,8 @@ private void handleTypeParameters(List<TypeParameter> typeParameters) {
 					this.options.insert_space_after_opening_angle_bracket_in_type_parameters);
 			handleTokenAfter(typeParameters.get(typeParameters.size() - 1), TokenNameGREATER,
 					this.options.insert_space_before_closing_angle_bracket_in_type_parameters,
-					this.options.insert_space_after_closing_angle_bracket_in_type_parameters);
+					typeParameters.get(0).getParent() instanceof RecordDeclaration ? false
+							: this.options.insert_space_after_closing_angle_bracket_in_type_parameters);
 			handleCommas(typeParameters, this.options.insert_space_before_comma_in_type_parameters,
 					this.options.insert_space_after_comma_in_type_parameters);
 		}