Ruby internals

(or how your code runs)

¿Interpretado o compilado?

Ruby:

// https://github.com/ruby/ruby/blob/v1_8_6_111/
// eval.c

static VALUE              /* Line 2924*/
rb_eval(self, n)
    VALUE self;
    NODE *n;
{
    NODE * volatile contnode = 0;
    NODE * volatile node = n;
    int state;
    volatile VALUE result = Qnil;

#define RETURN(v) \
  do {
    result = (v); \
    goto finish; \
  } while (0)

  again:
    if (!node) RETURN(Qnil);

    ruby_current_node = node;
    switch (nd_type(node)) {
      case NODE_BLOCK:
      /* ... */
      case NODE_POSTEXE:
      /* ... */
      case NODE_BEGIN:
    /*
        .
        .
        .
    */

  finish:
    CHECK_INTS;
    if (contnode) {
  node = contnode;
  contnode = 0;
  goto again;
    }
    return result;
}                               /* Line   4144 */

Instruction sequence de un script simple

2

Stack

3

Text

putobject              2


putobject              3


opt_plus               <callinfo!mid:+, ...>


opt_send_without_block <callinfo!mid:puts, ...>


leave