advflowctl

Provide advanced flow-control statements similar to other programming languages.

Enabled by: yoption advflowctl;

Keywords:

   break
   case
   constant
   continue
   switch
   ...
   :
   &&&
   |||

---

'break' : valid in 'do', 'for', 'foreach', 'switch', 'while' 'continue' : valid in 'do', 'for', 'foreach', 'while'

'&&&' : provides short-circuiting AND operation

       left-hand operand evaluated before right-hand operand
       right-hand operand evaluated only if left-hand operand is true

---

'|||' : provides short-circuiting OR operation

       left-hand operand evaluated before right-hand operand
       right-hand operand evaluated only if left-hand operand is false

---

'constant' usage as follows:

   'constant' name '=' constantexpr ';'

   constantexpr := floatconstant | integerconstant | stringconstant | constantexpr constbinop constantexpr | constunop constantexpr
   constbinop   := '+' | '-' | '*' | '/' | '%' | '&' | '|' | '^'
   constunop    := '-' | '~'

   name is defined to be the same type as constantexpr

   Note: & | ^ ~ require all integer operands
         - * / % require either integer or float operands
         only + is valid for strings

---

'switch' usage as follows :

   'switch' '(' integerexpression ')' '{'
       [ 'case' integerconstantexpression [ '...' integerconstantexpression ']' ':' singlestatement ]*
       [ 'default' ':' singlestatement ]
   '}'

---

the switch statement is also valid for string expressions, for example:

   switch (command) {
       case "turnleft": {
           TurnLeft ();
           break;
       }
       case "turnright": {
           TurnRight ();
           break;
       }
       default: llOwnerSay ("dont know how to handle " + command);
   }