Use gql file for ease

graph_query.gql

+query { 
+    uid (id: "5") {
+        age 
+    }
+}
\ No newline at end of file

src/main.rs

 
 use core::panic;
+use std::fs;
+use std::error::Error;
 
 use graphql_parser::query::Field;
 use graphql_parser::query::OperationDefinition;
@@ -13,15 +15,16 @@ fn print_type_of<T>(_: &T) {
 }
 
 
-fn main() {
+fn main() -> Result<(), Box<dyn Error>> {
 
+	let query_string = fs::read_to_string("graph_query.gql")?;
 	// let str = String::from("query { queryPersons{ name } }");
-	let str = String::from("query { uid(id: \"0x1000\") { age } }");
+	let str = String::from(query_string);
 	let res = parse_query::<String>(&str).unwrap().to_owned();
 
 	println!("{}", res);
 	println!("{}", res.definitions.len());
-	for def in res.definitions {
+	Ok(for def in res.definitions {
 
 		if let Definition::Operation(op) = def {
 			if let OperationDefinition::Query(query) = op{
@@ -41,7 +44,7 @@ fn main() {
 		} else {
 			panic!("Fragments are not supported");
 		}
-	}
+	})
 
 	
 }