d/step0_repl.d

   1 import std.stdio;
   2 import std.string;
   3 import readline;
   4
   5 string READ(string str)
   6 {
   7     return str;
   8 }
   9
  10 string EVAL(string ast)
  11 {
  12     return ast;
  13 }
  14
  15 string PRINT(string ast)
  16 {
  17     return ast;
  18 }
  19
  20 string rep(string str)
  21 {
  22     return PRINT(EVAL(READ(str)));
  23 }
  24
  25 void main()
  26 {
  27     for (;;)
  28     {
  29         string line = _readline("user> ");
  30         if (line is null) break;
  31         if (line.length == 0) continue;
  32         writeln(rep(line));
  33     }
  34     writeln("");
  35 }