Add recursion example

.gitignore

@@ -2,3 +2,4 @@
 /replybot
 /include
 /macro
+/recursion

examples/recursion/post.html

@@ -0,0 +1,6 @@
+<div class="post" data-id="#(post.ID)">
+    <p>Message=#(post.Message)</p>
+    #for(child in post.Children):
+        #include("post.html", post = child)
+    #!for
+</div>

examples/recursion/recursion.go

@@ -0,0 +1,80 @@
+/*
+ * Salix - Go templating engine
+ * Copyright (C) 2023 Elara Musayelyan
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package main
+
+import (
+	_ "embed"
+	"log"
+	"net/http"
+
+	"go.elara.ws/salix"
+)
+
+//go:embed post.html
+var tmpl string
+
+type Post struct {
+	ID       int
+	Message  string
+	Children []*Post
+}
+
+var posts = Post{
+	ID:      0,
+	Message: "Hello",
+	Children: []*Post{
+		{
+			ID:      12,
+			Message: "Hi!",
+			Children: []*Post{
+				{
+					ID:      13234,
+					Message: "Test 2",
+				},
+			},
+		},
+		{
+			ID:      13,
+			Message: "Test",
+		},
+	},
+}
+
+func main() {
+	t, err := salix.New().ParseString("post.html", tmpl)
+	if err != nil {
+		panic(err)
+	}
+
+	http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
+		err = t.WithVarMap(map[string]any{"post": posts}).Execute(w)
+		if err != nil {
+			log.Println(err)
+			w.WriteHeader(http.StatusInternalServerError)
+			return
+		}
+	})
+
+	log.Println("Starting HTTP server on port 8080")
+
+	err = http.ListenAndServe(":8080", nil)
+	if err != nil {
+		log.Fatalln(err)
+	}
+}

salix.go

@@ -368,6 +368,9 @@ func (t *Template) getField(fa ast.FieldAccess, local map[string]any) (any, erro
 		return nil, err
 	}
 	rval := reflect.ValueOf(val)
+	for rval.Kind() == reflect.Pointer {
+		rval = rval.Elem()
+	}
 	field := rval.FieldByName(fa.Name.Value)
 	if !field.IsValid() {
 		return nil, t.posError(fa, "%w: %s", ErrNoSuchField, fa.Name.Value)
@@ -382,6 +385,9 @@ func (t *Template) execMethodCall(mc ast.MethodCall, local map[string]any) (any,
 		return nil, err
 	}
 	rval := reflect.ValueOf(val)
+	for rval.Kind() == reflect.Pointer {
+		rval = rval.Elem()
+	}
 	mtd := rval.MethodByName(mc.Name.Value)
 	if !mtd.IsValid() {
 		return nil, t.posError(mc, "%w: %s", ErrNoSuchMethod, mc.Name.Value)