From f705f0fce151863091ad77753105f0d15270edec Mon Sep 17 00:00:00 2001
From: Joel Martin <github@martintribe.org>
Date: Thu, 10 Apr 2014 20:34:29 -0500
Subject: Ruby: step0, step1

---
 ruby/step0_repl.rb | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)
 create mode 100644 ruby/step0_repl.rb

(limited to 'ruby/step0_repl.rb')

diff --git a/ruby/step0_repl.rb b/ruby/step0_repl.rb
new file mode 100644
index 0000000..dd32b27
--- /dev/null
+++ b/ruby/step0_repl.rb
@@ -0,0 +1,25 @@
+require "readline"
+
+# read
+def READ(str)
+    return str
+end
+
+# eval
+def EVAL(ast, env)
+    return ast
+end
+
+# print
+def PRINT(exp)
+    return exp
+end
+
+# repl
+def REP(str)
+    return PRINT(EVAL(READ(str), {}))
+end
+
+while line = Readline.readline("user> ", true)
+    puts REP(line)
+end
-- 
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