fork download

copy

using System;
 
macro @if (cond, e1, e2)
syntax ("if", "(", cond, ")", e1, Optional (";"), "else", e2)
{
  /*
    <[ ]> defines an area of quasi-quotation, the Nemerle compiler transforms the code in it 
    to an AST tree, such transformations are somewhat similar to an Expression compiling in C#
  */
  <[
    match ($cond : bool)
    {
      | true => $e1
      | _ => $e2
    }
  ]>
}
 
// using this macro in code:
def result = if (Console.ReadLine()> Console.ReadLine()) "greater" else "other";
 
Console.WriteLine(result)

prog.nem:5:1:17:2: error: unbound type name `IMacro'
prog.nem:5:1:17:2: error: unbound type name `GrammarElement'
prog.nem:5:1:17:2: error: unbound type name `SyntaxElement'
prog.nem:5:1:17:2: error: unbound type name `SyntaxElement'
prog.nem:5:1:17:2: error: unbound type name `Typer'
prog.nem:5:1:17:2: error: unbound type name `SyntaxElement'
prog.nem:5:1:17:2: error: unbound type name `PExpr'
prog.nem:5:1:17:2: error: unbound type name `PExpr'
prog.nem:5:1:17:2: error: unbound type name `SyntaxElement'

Standard output is empty