Unity Ifdefs

Preprocessor.hx

package hugs;

import haxe.macro.Expr;
import haxe.macro.Context;

/** Utility to generate C# preprocessor macros */
class Preprocessor
{
  public macro static function IF(name:ExprOf<String>) : Expr {
    var ns = switch(name.expr) {
    case EConst(CString(s)): s;
    default: Context.error('Expected string', name.pos); null;
    };
    var n = {expr:EConst(CString('#if ${ns} //')), pos:name.pos};
    return macro untyped __cs__($n);
  }

  public macro static function ELIF(name:ExprOf<String>) : Expr {
    var ns = switch(name.expr) {
    case EConst(CString(s)): s;
    default: Context.error('Expected string', name.pos); null;
    };
    var n = {expr:EConst(CString('#elif ${ns} //')), pos:name.pos};
    return macro untyped __cs__($n);
  }

  public macro static function ELSE() : Expr {
    return macro untyped __cs__("#else //");
  }

  public macro static function ENDIF() : Expr {
    return macro untyped __cs__("#endif //");
  }
}