Chervil is a toy Lisp interpreter written in Ruby
您最多选择25个主题 主题必须以字母或数字开头,可以包含连字符 (-),并且长度不得超过35个字符

chervil 260B

123456789101112
  1. #!/usr/bin/env ruby
  2. require "chervil"
  3. require "readline"
  4. env = Chervil::Env.new
  5. while line = Readline.readline("> ", true)
  6. lexer = Chervil::Lexer.new(line)
  7. tree = Chervil::Parser.new(lexer).parse
  8. puts Chervil::Interpreter.new(tree, env).interpret
  9. end