From f1259a6b1b701937aee1a2094f3eefda69e01b7d Mon Sep 17 00:00:00 2001
From: Artemy <artegoser@gmail.com>
Date: Sun, 14 Aug 2022 23:32:54 +0300
Subject: [PATCH] feat: reference variables

---
 src/interpreter.rs | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/src/interpreter.rs b/src/interpreter.rs
index 685b85d..c057260 100644
--- a/src/interpreter.rs
+++ b/src/interpreter.rs
@@ -119,6 +119,14 @@ impl Interpreter {
                                 self.error("Unsupported data type for the `var` argument, must be a string");
                             }
                         },
+                        "ref" => match value {
+                            Value::String(value) => {
+                                return self.variable_reference(value);
+                            }
+                            _ => {
+                                self.error("Unsupported data type for the `ref` argument, must be a string");
+                            }
+                        },
                         "isExist" => match value {
                             Value::String(value) => {
                                 return Value::Bool(self.var_exists(value));
@@ -437,6 +445,18 @@ impl Interpreter {
         }
     }
 
+    fn variable_reference(&mut self, name: &String) -> Value {
+        if self.var_exists(name) {
+            return json!({ "var": name });
+        } else {
+            self.error(&format!(
+                "The variable {} does not exist, the reference is invalid",
+                name
+            ));
+        }
+        Value::Null
+    }
+
     fn calc(&mut self, value: &Vec<Value>) -> Value {
         let op1 = &value[0];
         let operation = &value[1];