From 800ce5e92777d1d865edd8b4f12082584869c1d1 Mon Sep 17 00:00:00 2001
From: Josh Baker <joshbaker77@gmail.com>
Date: Mon, 17 Oct 2016 17:39:27 -0700
Subject: [PATCH] added Index field

---
 README.md |  1 +
 gjson.go  | 10 ++++++++++
 2 files changed, 11 insertions(+)

diff --git a/README.md b/README.md
index 1ee5ae3..1aa0765 100644
--- a/README.md
+++ b/README.md
@@ -106,6 +106,7 @@ result.Str     // holds the string
 result.Num     // holds the float64 number
 result.Raw     // holds the raw json
 result.Multi   // holds nested array values
+result.Index   // index of raw value in original json, zero means index unknown
 ```
 
 There are a variety of handy functions that work on a result:
diff --git a/gjson.go b/gjson.go
index 6ea5ebe..0945497 100644
--- a/gjson.go
+++ b/gjson.go
@@ -37,6 +37,8 @@ type Result struct {
 	Str string
 	// Num is the json number
 	Num float64
+	// Index of raw value in original json, zero means index unknown
+	Index int
 }
 
 // String returns a string representation of the value.
@@ -1131,6 +1133,14 @@ func Get(json, path string) Result {
 			break
 		}
 	}
+	if len(c.value.Raw) > 0 {
+		jhdr := *(*reflect.StringHeader)(unsafe.Pointer(&json))
+		rhdr := *(*reflect.StringHeader)(unsafe.Pointer(&(c.value.Raw)))
+		c.value.Index = int(rhdr.Data - jhdr.Data)
+		if c.value.Index < 0 || c.value.Index >= len(json) {
+			c.value.Index = 0
+		}
+	}
 	return c.value
 }