1 files changed, 126 insertions, 0 deletions
diff --git a/std/factory.go b/std/factory.go
new file mode 100644
index 0000000..11c3de1
--- /dev/null
+++ b/std/factory.go
@@ -0,0 +1,126 @@
+package std
+
+import (
+	"fmt"
+	"strconv"
+	"strings"
+
+	"go.neonxp.dev/json"
+)
+
+func Factory(typ json.NodeType) (json.Node, error) {
+	switch typ {
+	case json.ObjectType:
+		return ObjectNode{}, nil
+	case json.ArrayType:
+		return &ArrayNode{}, nil
+	case json.StringType:
+		return &StringNode{}, nil
+	case json.NumberType:
+		return &NumberNode{}, nil
+	case json.BooleanType:
+		return &BooleanNode{}, nil
+	case json.NullType:
+		return NullNode{}, nil
+	}
+	return nil, fmt.Errorf("unknown type: %s", typ)
+}
+
+type ObjectNode map[string]json.Node
+
+func (o ObjectNode) SetKeyValue(k string, v json.Node) {
+	o[k] = v
+}
+
+func (o ObjectNode) GetByKey(k string) (json.Node, bool) {
+	v, ok := o[k]
+	return v, ok
+}
+
+func (o ObjectNode) String() string {
+	res := make([]string, 0, len(o))
+	for k, n := range o {
+		res = append(res, fmt.Sprintf(`"%s":%s`, k, n.String()))
+	}
+	return fmt.Sprintf(`{%s}`, strings.Join(res, ","))
+}
+
+type ArrayNode []json.Node
+
+func (o *ArrayNode) Append(v json.Node) {
+	na := append(*o, v)
+	*o = na
+}
+
+func (o *ArrayNode) Index(i int) json.Node {
+	return (*o)[i]
+}
+
+func (o *ArrayNode) Len() int {
+	return len(*o)
+}
+
+func (o *ArrayNode) String() string {
+	res := make([]string, 0, len(*o))
+	for _, v := range *o {
+		res = append(res, v.String())
+	}
+	return fmt.Sprintf(`[%s]`, strings.Join(res, ","))
+}
+
+type StringNode struct {
+	Value string
+}
+
+func (o *StringNode) SetString(v string) {
+	o.Value = v
+}
+
+func (o *StringNode) GetString() string {
+	return o.Value
+}
+
+func (o *StringNode) String() string {
+	return `"` + o.Value + `"`
+}
+
+type NumberNode struct {
+	Value float64
+}
+
+func (o *NumberNode) SetNumber(v float64) {
+	o.Value = v
+}
+
+func (o *NumberNode) GetNumber() float64 {
+	return o.Value
+}
+
+func (o *NumberNode) String() string {
+	return strconv.FormatFloat(float64(o.Value), 'g', 15, 64)
+}
+
+type BooleanNode struct {
+	Value bool
+}
+
+func (o *BooleanNode) SetBool(v bool) {
+	o.Value = v
+}
+
+func (o *BooleanNode) GetBool() bool {
+	return o.Value
+}
+
+func (o BooleanNode) String() string {
+	if o.Value {
+		return "true"
+	}
+	return "false"
+}
+
+type NullNode struct{}
+
+func (o NullNode) String() string {
+	return "null"
+}