From 34bb3fea8af9a9cfc0b728020cf9dd74a5b3e0e3 Mon Sep 17 00:00:00 2001
From: Pekka Laiho <pekka.i.laiho@gmail.com>
Date: Mon, 4 Jul 2022 15:55:38 +0700
Subject: [PATCH] ability to give custom env into readEval function

---
 src/Lisp.php | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/Lisp.php b/src/Lisp.php
index 8154ce9..7ae7fd7 100644
--- a/src/Lisp.php
+++ b/src/Lisp.php
@@ -39,13 +39,13 @@ class Lisp
         return $this->printer->pstr($value, $printReadable);
     }
 
-    public function readEval(string $input)
+    public function readEval(string $input, ?Env $customEnv = null)
     {
         $tokens = $this->tokenizer->tokenize($input);
 
         $expr = $this->reader->read($tokens);
 
-        return $this->eval->eval($expr, $this->env);
+        return $this->eval->eval($expr, $customEnv ? $customEnv : $this->env);
     }
 
     // read, eval, print