Working on IntrinsicHtml and nested render closures.

web-views/sketching/echoElement.wvc

@@ -0,0 +1,4 @@
+---
+import groowt.view.web.lib.Echo
+---
+<Echo greeting="Hello!"><p>${context}</p></Echo>

web-views/src/main/groovy/groowt/view/web/lib/IntrinsicHtml.groovy

@@ -56,24 +56,23 @@ class IntrinsicHtml extends DelegatingWebViewComponent implements WithHtml {
         if (this.isVoidElement && this.hasChildren()) {
             throw new ComponentRenderException('A void html element cannot have children.')
         }
-        return {
+        return { writer ->
-            it << '<'
+            writer << '<'
-            it << this.name
+            writer << this.name
             if (!this.attr.isEmpty()) {
-                it << ' '
+                writer << ' '
-                this.formatAttr(it)
+                this.formatAttr(writer)
             }
-            it << '>'
+            writer << '>'
             if (this.hasChildren()) {
                 this.children.each {
-                    def renderer = it.getRenderer(this)
+                    it.renderTo(writer, this)
-                    renderer.call(it.child)
                 }
             }
             if (!this.isVoidElement) {
-                it << '</'
+                writer << '</'
-                it << this.name
+                writer << this.name
-                it << '>'
+                writer << '>'
             }
         }
     }

web-views/src/main/java/groowt/view/web/WebViewComponentChild.java

@@ -4,21 +4,28 @@ import groovy.lang.Closure;
 import groowt.view.component.ComponentTemplate;
 import groowt.view.component.ViewComponent;
 import groowt.view.component.runtime.ComponentWriter;
-import org.jetbrains.annotations.Nullable;
+import groowt.view.component.runtime.DefaultComponentWriter;
 
-import java.util.Objects;
+import java.io.Writer;
 
 public class WebViewComponentChild {
 
     private static final class ChildRenderClosure extends Closure<Void> {
 
         private final ViewComponent parent;
-        private final @Nullable Object child;
+        private final Object child;
+        private final ComponentWriter writer;
 
-        public ChildRenderClosure(ComponentTemplate template, ViewComponent parent, @Nullable Object child) {
+        public ChildRenderClosure(
+                ComponentTemplate template,
+                ViewComponent parent,
+                ComponentWriter writer,
+                Object child
+        ) {
             super(template, template);
             this.parent = parent;
             this.child = child;
+            this.writer = writer;
             this.setDelegate(this.parent);
             this.setResolveStrategy(Closure.DELEGATE_FIRST);
         }
@@ -27,23 +34,19 @@ public class WebViewComponentChild {
             return this.parent;
         }
 
-        public void doCall(ComponentWriter writer) {
+        public void doCall() {
-            writer.append(Objects.requireNonNull(this.child));
+            this.writer.append(this.child);
-        }
-
-        public void doCall(ComponentWriter writer, Object givenChild) {
-            writer.append(givenChild);
         }
 
     }
 
     private final ComponentTemplate template;
-    private final ComponentWriter out;
+    private final ComponentWriter componentWriter;
     private final Object child;
 
-    public WebViewComponentChild(ComponentTemplate template, ComponentWriter out, Object child) {
+    public WebViewComponentChild(ComponentTemplate template, ComponentWriter componentWriter, Object child) {
         this.template = template;
-        this.out = out;
+        this.componentWriter = componentWriter;
         this.child = child;
     }
 
@@ -52,13 +55,14 @@ public class WebViewComponentChild {
     }
 
     public void render(ViewComponent parent) {
-        final var cl = this.getRenderer(parent);
+        new ChildRenderClosure(this.template, parent, this.componentWriter, this.child).call();
-        cl.call(this.child);
     }
 
-    public Closure<Void> getRenderer(ViewComponent parent) {
+    public Writer renderTo(Writer out, ViewComponent parent) {
-        final var cl = new ChildRenderClosure(this.template, parent, null);
+        final var componentWriter = new DefaultComponentWriter(out);
-        return cl.curry(this.out);
+        final var childRenderClosure = new ChildRenderClosure(this.template, parent, componentWriter, this.child);
+        childRenderClosure.call();
+        return out;
     }
 
 }

web-views/src/main/java/groowt/view/web/transpile/resolve/ModuleNodeComponentClassNodeResolver.java

@@ -1,6 +1,5 @@
 package groowt.view.web.transpile.resolve;
 
-import groowt.view.web.WebViewComponentBugError;
 import groowt.view.web.compiler.WebViewComponentTemplateCompileUnit;
 import groowt.view.web.util.Either;
 import org.codehaus.groovy.ast.ClassNode;
@@ -30,10 +29,12 @@ public class ModuleNodeComponentClassNodeResolver extends CachingComponentClassN
 
             // try pre-pending package and asking for fqn
             final var packageName = this.moduleNode.getPackageName();
+            final String fqn;
             if (packageName.endsWith(".")) {
-                throw new WebViewComponentBugError(new IllegalStateException("Package name illegally ends with '.'"));
+                fqn = this.moduleNode + nameWithoutPackage;
+            } else {
+                fqn = this.moduleNode.getPackageName() + "." + nameWithoutPackage;
             }
-            final var fqn = this.moduleNode.getPackageName() + "." + nameWithoutPackage;
             final var withPackage = this.getClassForFqn(fqn);
             if (withPackage.isRight()) {
                 return withPackage;

web-views/src/test/groovy/groowt/view/web/lib/IntrinsicHtmlTests.groovy

@@ -22,8 +22,8 @@ class IntrinsicHtmlTests extends AbstractWebViewComponentTests {
 
     @Test
     @Disabled('Until we figure out nested closure delegates')
-    void canUseEchoAttrProperty() {
+    void canUseEchoAttrPropertyViaContext() {
-        this.doTest('<Echo greeting="Hello!"><p>$greeting</p></Echo>', '<p>Hello!</p>')
+        this.doTest('<Echo greeting="Hello!"><p>${context}</p></Echo>', '<p>Hello!</p>')
     }
 
 }