Initial QSfera import

Server/vendor/github.com/valyala/fastjson/update.go

@@ -0,0 +1,113 @@
+package fastjson
+
+import (
+	"strconv"
+	"strings"
+)
+
+// Del deletes the entry with the given key from o.
+func (o *Object) Del(key string) {
+	if o == nil {
+		return
+	}
+	if !o.keysUnescaped && strings.IndexByte(key, '\\') < 0 {
+		// Fast path - try searching for the key without object keys unescaping.
+		for i, kv := range o.kvs {
+			if kv.k == key {
+				o.kvs = append(o.kvs[:i], o.kvs[i+1:]...)
+				return
+			}
+		}
+	}
+
+	// Slow path - unescape object keys before item search.
+	o.unescapeKeys()
+
+	for i, kv := range o.kvs {
+		if kv.k == key {
+			o.kvs = append(o.kvs[:i], o.kvs[i+1:]...)
+			return
+		}
+	}
+}
+
+// Del deletes the entry with the given key from array or object v.
+func (v *Value) Del(key string) {
+	if v == nil {
+		return
+	}
+	if v.t == TypeObject {
+		v.o.Del(key)
+		return
+	}
+	if v.t == TypeArray {
+		n, err := strconv.Atoi(key)
+		if err != nil || n < 0 || n >= len(v.a) {
+			return
+		}
+		v.a = append(v.a[:n], v.a[n+1:]...)
+	}
+}
+
+// Set sets (key, value) entry in the o.
+//
+// The value must be unchanged during o lifetime.
+func (o *Object) Set(key string, value *Value) {
+	if o == nil {
+		return
+	}
+	if value == nil {
+		value = valueNull
+	}
+	o.unescapeKeys()
+
+	// Try substituting already existing entry with the given key.
+	for i := range o.kvs {
+		kv := &o.kvs[i]
+		if kv.k == key {
+			kv.v = value
+			return
+		}
+	}
+
+	// Add new entry.
+	kv := o.getKV()
+	kv.k = key
+	kv.v = value
+}
+
+// Set sets (key, value) entry in the array or object v.
+//
+// The value must be unchanged during v lifetime.
+func (v *Value) Set(key string, value *Value) {
+	if v == nil {
+		return
+	}
+	if v.t == TypeObject {
+		v.o.Set(key, value)
+		return
+	}
+	if v.t == TypeArray {
+		idx, err := strconv.Atoi(key)
+		if err != nil || idx < 0 {
+			return
+		}
+		v.SetArrayItem(idx, value)
+	}
+}
+
+// SetArrayItem sets the value in the array v at idx position.
+//
+// The value must be unchanged during v lifetime.
+func (v *Value) SetArrayItem(idx int, value *Value) {
+	if v == nil || v.t != TypeArray {
+		return
+	}
+	for idx >= len(v.a) {
+		v.a = append(v.a, valueNull)
+	}
+	if value == nil {
+		value = valueNull
+	}
+	v.a[idx] = value
+}