Function codeunexpval

extlibs/lua/src/lcode.c:1341–1347

** Emit code for unary expressions that "produce values" ** (everything but 'not'). ** Expression to produce final result will be encoded in 'e'. */

** Expression to produce final result will be encoded in 'e'.
*/
static void codeunexpval (FuncState *fs, OpCode op, expdesc *e, int line) {
  int r = luaK_exp2anyreg(fs, e);  /* opcodes operate only on registers */
  freeexp(fs, e);
  e->u.info = luaK_codeABC(fs, op, 0, r, 0);  /* generate opcode */
  e->k = VRELOC;  /* all those operations are relocatable */
  luaK_fixline(fs, line);
}


/*