Add recursion example

This commit is contained in:
Elara 2023-10-31 14:05:21 -07:00
parent 236e178cea
commit 82e81ec7f4
4 changed files with 94 additions and 1 deletions

1
.gitignore vendored
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@ -2,3 +2,4 @@
/replybot /replybot
/include /include
/macro /macro
/recursion

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@ -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>

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@ -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)
}
}

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