diff --git a/src/bin.rs b/src/bin.rs
index d5558f6..97f1b13 100644
--- a/src/bin.rs
+++ b/src/bin.rs
@@ -2,8 +2,10 @@ extern crate nom;
 
 use renderer::compile_template;
 use renderer::CompiledTemplate;
+use renderer::ContextElement;
 use renderer::DustRenderer;
 use renderer::Renderable;
+use renderer::Walkable;
 use std::env;
 use std::fs;
 use std::io::{self, Read};
@@ -67,6 +69,8 @@ fn read_context_from_stdin() -> serde_json::map::Map<String, serde_json::Value>
     }
 }
 
+impl ContextElement for serde_json::Value {}
+
 impl Renderable for serde_json::Value {
     fn render(&self) -> String {
         match self {
@@ -79,3 +83,22 @@ impl Renderable for serde_json::Value {
         }
     }
 }
+
+impl Walkable for serde_json::Value {
+    fn walk(&self, segment: &str) -> &dyn ContextElement {
+        match self {
+            serde_json::Value::Null => panic!("Attempted to walk to {} on a null value", segment),
+            serde_json::Value::Bool(_boolean) => {
+                panic!("Attempted to walk to {} on a boolean value", segment)
+            }
+            serde_json::Value::Number(_num) => {
+                panic!("Attempted to walk to {} on a number value", segment)
+            }
+            serde_json::Value::String(_string) => {
+                panic!("Attempted to walk to {} on a string value", segment)
+            }
+            serde_json::Value::Array(_arr) => todo!("Arrays not supported yet"),
+            serde_json::Value::Object(obj) => obj.get(segment).unwrap(),
+        }
+    }
+}