Qute - fix a regression introduced in #32653 (3.0.1)

- value resolvers are not registered for non-application classes after
hot reload
- fixes #32959

Author: mkouba

Diff for: extensions/qute/deployment/src/main/java/io/quarkus/qute/deployment/QuteProcessor.java

@@ -1742,11 +1742,14 @@ public String apply(String name) {
             }
         });
 
+        // NOTE: We can't use this optimization for classes generated by ValueResolverGenerator because we cannot easily
+        // map a target class to a specific set of generated classes
         ExistingValueResolvers existingValueResolvers = liveReloadBuildItem.getContextObject(ExistingValueResolvers.class);
         if (existingValueResolvers == null) {
             existingValueResolvers = new ExistingValueResolvers();
             liveReloadBuildItem.setContextObject(ExistingValueResolvers.class, existingValueResolvers);
         }
+        Set<String> generatedValueResolvers = new HashSet<>();
 
         ValueResolverGenerator.Builder builder = ValueResolverGenerator.builder()
                 .setIndex(index).setClassOutput(classOutput);
@@ -1770,15 +1773,11 @@ public Function<FieldInfo, String> apply(ClassInfo clazz) {
         Set<DotName> controlled = new HashSet<>();
         Map<DotName, AnnotationInstance> uncontrolled = new HashMap<>();
         for (TemplateDataBuildItem data : templateData) {
-            processTemplateData(data, controlled, uncontrolled, builder, existingValueResolvers, applicationClassPredicate);
+            processTemplateData(data, controlled, uncontrolled, builder);
         }
 
         for (ImplicitValueResolverBuildItem implicit : implicitClasses) {
             DotName implicitClassName = implicit.getClazz().name();
-            if (existingValueResolvers.contains(implicitClassName)) {
-                // A non-application value resolver already generated
-                continue;
-            }
             if (controlled.contains(implicitClassName)) {
                 LOGGER.debugf("Implicit value resolver for %s ignored: class is annotated with @TemplateData",
                         implicitClassName);
@@ -1790,24 +1789,23 @@ public Function<FieldInfo, String> apply(ClassInfo clazz) {
                 continue;
             }
             builder.addClass(implicit.getClazz(), implicit.getTemplateData());
-            existingValueResolvers.add(implicitClassName, applicationClassPredicate);
         }
 
         ValueResolverGenerator generator = builder.build();
         generator.generate();
-
-        Set<String> generatedValueResolvers = new HashSet<>();
         generatedValueResolvers.addAll(generator.getGeneratedTypes());
 
         ExtensionMethodGenerator extensionMethodGenerator = new ExtensionMethodGenerator(index, classOutput);
         Map<DotName, Map<String, List<TemplateExtensionMethodBuildItem>>> classToNamespaceExtensions = new HashMap<>();
         Map<String, DotName> namespaceToClass = new HashMap<>();
 
         for (TemplateExtensionMethodBuildItem templateExtension : templateExtensionMethods) {
-            if (existingValueResolvers.contains(templateExtension.getMethod())) {
+            String generatedValueResolverClass = existingValueResolvers.getGeneratedClass(templateExtension.getMethod());
+            if (generatedValueResolverClass != null) {
+                // A ValueResolver of a non-application class was already generated
+                generatedValueResolvers.add(generatedValueResolverClass);
                 continue;
             }
-            existingValueResolvers.add(templateExtension.getMethod(), applicationClassPredicate);
 
             if (templateExtension.hasNamespace()) {
                 // Group extension methods declared on the same class by namespace
@@ -1835,8 +1833,10 @@ public Function<FieldInfo, String> apply(ClassInfo clazz) {
                 namespaceMethods.add(templateExtension);
             } else {
                 // Generate ValueResolver per extension method
-                extensionMethodGenerator.generate(templateExtension.getMethod(), templateExtension.getMatchName(),
+                String generatedClass = extensionMethodGenerator.generate(templateExtension.getMethod(),
+                        templateExtension.getMatchName(),
                         templateExtension.getMatchNames(), templateExtension.getMatchRegex(), templateExtension.getPriority());
+                existingValueResolvers.add(templateExtension.getMethod(), generatedClass, applicationClassPredicate);
             }
         }
 
@@ -1853,6 +1853,10 @@ public Function<FieldInfo, String> apply(ClassInfo clazz) {
                     try (NamespaceResolverCreator namespaceResolverCreator = extensionMethodGenerator
                             .createNamespaceResolver(priorityEntry.getValue().get(0).getMethod().declaringClass(),
                                     nsEntry.getKey(), priorityEntry.getKey())) {
+                        for (TemplateExtensionMethodBuildItem extensionMethod : priorityEntry.getValue()) {
+                            existingValueResolvers.add(extensionMethod.getMethod(), namespaceResolverCreator.getClassName(),
+                                    applicationClassPredicate);
+                        }
                         try (ResolveCreator resolveCreator = namespaceResolverCreator.implementResolve()) {
                             for (TemplateExtensionMethodBuildItem method : priorityEntry.getValue()) {
                                 resolveCreator.addMethod(method.getMethod(), method.getMatchName(), method.getMatchNames(),
@@ -1901,28 +1905,25 @@ public Function<FieldInfo, String> apply(ClassInfo clazz) {
      */
     static class ExistingValueResolvers {
 
-        final Set<String> identifiers = new HashSet<>();
-
-        boolean contains(DotName className) {
-            return identifiers.contains(className.toString());
-        }
+        final Map<String, String> identifiersToGeneratedClass = new HashMap<>();
 
         boolean contains(MethodInfo extensionMethod) {
-            return identifiers.contains(extensionMethod.declaringClass().toString() + "#" + extensionMethod.toString());
+            return identifiersToGeneratedClass
+                    .containsKey(toKey(extensionMethod));
         }
 
-        boolean add(DotName className, Predicate<DotName> applicationClassPredicate) {
-            if (!applicationClassPredicate.test(className)) {
-                return identifiers.add(className.toString());
-            }
-            return false;
+        String getGeneratedClass(MethodInfo extensionMethod) {
+            return identifiersToGeneratedClass.get(toKey(extensionMethod));
         }
 
-        boolean add(MethodInfo extensionMethod, Predicate<DotName> applicationClassPredicate) {
+        void add(MethodInfo extensionMethod, String className, Predicate<DotName> applicationClassPredicate) {
             if (!applicationClassPredicate.test(extensionMethod.declaringClass().name())) {
-                return identifiers.add(extensionMethod.declaringClass().toString() + "#" + extensionMethod.toString());
+                identifiersToGeneratedClass.put(toKey(extensionMethod), className);
             }
-            return false;
+        }
+
+        private String toKey(MethodInfo extensionMethod) {
+            return extensionMethod.declaringClass().toString() + "#" + extensionMethod.toString();
         }
     }
 
@@ -2942,22 +2943,15 @@ private static boolean methodMatches(MethodInfo method, VirtualMethodPart virtua
     }
 
     private void processTemplateData(TemplateDataBuildItem templateData,
-            Set<DotName> controlled, Map<DotName, AnnotationInstance> uncontrolled, ValueResolverGenerator.Builder builder,
-            ExistingValueResolvers existingValueResolvers,
-            CompletedApplicationClassPredicateBuildItem applicationClassPredicate) {
+            Set<DotName> controlled, Map<DotName, AnnotationInstance> uncontrolled, ValueResolverGenerator.Builder builder) {
         DotName targetClassName = templateData.getTargetClass().name();
-        if (existingValueResolvers.contains(targetClassName)) {
-            return;
-        }
         if (templateData.isTargetAnnotatedType()) {
             controlled.add(targetClassName);
             builder.addClass(templateData.getTargetClass(), templateData.getAnnotationInstance());
-            existingValueResolvers.add(targetClassName, applicationClassPredicate);
         } else {
             // At this point we can be sure that multiple unequal @TemplateData do not exist for a specific target
             uncontrolled.computeIfAbsent(targetClassName, name -> {
                 builder.addClass(templateData.getTargetClass(), templateData.getAnnotationInstance());
-                existingValueResolvers.add(targetClassName, applicationClassPredicate);
                 return templateData.getAnnotationInstance();
             });
         }

Diff for: extensions/qute/deployment/src/test/java/io/quarkus/qute/deployment/devmode/ExistingValueResolversDevModeTest.java

@@ -0,0 +1,40 @@
+package io.quarkus.qute.deployment.devmode;
+
+import static io.restassured.RestAssured.given;
+
+import org.hamcrest.Matchers;
+import org.jboss.shrinkwrap.api.asset.StringAsset;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.RegisterExtension;
+
+import io.quarkus.test.QuarkusDevModeTest;
+
+/**
+ * Test that built-in extension value resolvers are correctly registered after live reload.
+ */
+public class ExistingValueResolversDevModeTest {
+
+    @RegisterExtension
+    static final QuarkusDevModeTest config = new QuarkusDevModeTest()
+            .withApplicationRoot(root -> root
+                    .addClass(TestRoute.class)
+                    .addAsResource(new StringAsset(
+                            "{#let a = 3}{#let b = a.minus(2)}b={b}{/}{/}"),
+                            "templates/let.html"));
+
+    @Test
+    public void testExistingValueResolvers() {
+        given().get("test")
+                .then()
+                .statusCode(200)
+                .body(Matchers.equalTo("b=1"));
+
+        config.modifyResourceFile("templates/let.html", t -> t.concat("::MODIFIED"));
+
+        given().get("test")
+                .then()
+                .statusCode(200)
+                .body(Matchers.equalTo("b=1::MODIFIED"));
+    }
+
+}

Diff for: extensions/qute/deployment/src/test/java/io/quarkus/qute/deployment/devmode/TestRoute.java

@@ -0,0 +1,19 @@
+package io.quarkus.qute.deployment.devmode;
+
+import jakarta.inject.Inject;
+
+import io.quarkus.qute.Template;
+import io.quarkus.vertx.web.Route;
+import io.vertx.ext.web.RoutingContext;
+
+public class TestRoute {
+
+    @Inject
+    Template let;
+
+    @Route(path = "test")
+    public void test(RoutingContext ctx) {
+        ctx.end(let.render());
+    }
+
+}

Diff for: independent-projects/qute/generator/src/main/java/io/quarkus/qute/generator/ExtensionMethodGenerator.java

@@ -103,7 +103,16 @@ public static void validate(MethodInfo method, String namespace) {
         }
     }
 
-    public void generate(MethodInfo method, String matchName, List<String> matchNames, String matchRegex, Integer priority) {
+    /**
+     *
+     * @param method
+     * @param matchName
+     * @param matchNames
+     * @param matchRegex
+     * @param priority
+     * @return the fully qualified name of the generated class
+     */
+    public String generate(MethodInfo method, String matchName, List<String> matchNames, String matchRegex, Integer priority) {
 
         AnnotationInstance extensionAnnotation = method.annotation(TEMPLATE_EXTENSION);
         List<Type> parameters = method.parameterTypes();
@@ -199,6 +208,7 @@ public void generate(MethodInfo method, String matchName, List<String> matchName
         implementResolve(valueResolver, declaringClass, method, matchName, matchNames, patternField, params);
 
         valueResolver.close();
+        return generatedName.replace('/', '.');
     }
 
     public NamespaceResolverCreator createNamespaceResolver(ClassInfo declaringClass, String namespace, int priority) {
@@ -449,6 +459,10 @@ public NamespaceResolverCreator(ClassInfo declaringClass, String namespace, int
             implementGetPriority(namespaceResolver, priority);
         }
 
+        public String getClassName() {
+            return namespaceResolver.getClassName().replace('/', '.');
+        }
+
         public ResolveCreator implementResolve() {
             return new ResolveCreator();
         }