Add node.go

scan/node.go

@@ -0,0 +1,31 @@
+package scan
+
+import (
+	"encoding/json"
+	"fmt"
+	"log"
+)
+
+// Node structs are for use with bonzai/scan.R and compliment those from
+// bonzai/tree. They are simply lighter and optimized for quick parsing
+// during the scan process with scan.R.Parse and the z.P Expect
+// expression.
+type Node struct {
+	T string  `json:",omitempty"` // type
+	V string  `json:",omitempty"` // type
+	U []*Node `json:",omitempty"` // type
+}
+
+// ---------------------------- PrintAsJSON ---------------------------
+
+// JSON implements PrintAsJSON multi-line, 2-space indent JSON output.
+func (s *Node) JSON() string { b, _ := json.Marshal(s); return string(b) }
+
+// String implements PrintAsJSON and fmt.Stringer interface as JSON.
+func (s Node) String() string { return s.JSON() }
+
+// Print implements PrintAsJSON.
+func (s *Node) Print() { fmt.Println(s.JSON()) }
+
+// Log implements PrintAsJSON.
+func (s Node) Log() { log.Print(s.JSON()) }