Class: Warts::List

Inherits:
Object
  • Object
show all
Includes:
Comparable
Defined in:
ext/sclist.c

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Object 



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# File 'ext/sclist.c', line 110

static VALUE sclist_init(VALUE self)
{
  rb_ivar_set(self, iv_element_type, INT2FIX(SCAMPER_FILE_OBJ_LIST));
  return self;
}

Instance Attribute Details

#element_type ⇒ Object (readonly)

Class Method Details

.create(options) ⇒ Object 



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# File 'ext/sclist.c', line 188

static VALUE sclist_s_create(VALUE klass, VALUE options)
{
  scamper_list_t *list;
  VALUE option;
  unsigned int id;
  char* name;
  char* descr;
  char* monitor;
  VALUE retval;

  if (TYPE(options) != T_HASH) {
    rb_raise(rb_eTypeError, "wrong argument type -- expected hash");
  }

  option = rb_hash_aref(options, sym_id);
  id = (NIL_P(option) ? 0 : NUM2UINT(option));

  EXTRACT_STR_OPTION(list, name);
  EXTRACT_STR_OPTION(list, descr);
  EXTRACT_STR_OPTION(list, monitor);

  list = scamper_list_alloc(id, name, descr, monitor);
  if (!list) {
    return Qnil;
  }

  retval = Data_Wrap_Struct(cList, 0, sclist_free, list);
  if (NIL_P(sclist_init(retval))) {
    scamper_list_free(list);
    return Qnil;
  }

  return retval;
}

Instance Method Details

#<=>(other) ⇒ Object 



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# File 'ext/sclist.c', line 117

static VALUE sclist_cmp(VALUE self, VALUE other)
{
  scamper_list_t *self_list;
  scamper_list_t *other_list;

  if (other == self) {
    return INT2FIX(0);
  }

  /* See Pragmatic Programmer's book. */
  if (TYPE(other) != T_DATA || RDATA(other)->dfree != sclist_free) {
    rb_raise(rb_eTypeError, "wrong argument type");
  }

  Data_Get_Struct(self, scamper_list_t, self_list);
  Data_Get_Struct(other, scamper_list_t, other_list);

  return INT2FIX(self_list->id < other_list->id ? -1
		 : (self_list->id > other_list->id ? 1 : 0));
}

#derive(*args) ⇒ Object

nothing to do: users shouldn’t write lists themselves



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# File 'ext/sclist.c', line 145

static VALUE sclist_derive(int argc, VALUE *argv, VALUE self)
{
  scamper_list_t *self_list;
  scamper_list_t *list;
  VALUE options, option;
  unsigned int id;
  char* name;
  char* descr;
  char* monitor;
  VALUE retval;

  if (rb_scan_args(argc, argv, "01", &options) == 0) {
    options = rb_hash_new();
  }

  Data_Get_Struct(self, scamper_list_t, self_list);

  if (TYPE(options) != T_HASH) {
    rb_raise(rb_eTypeError, "wrong argument type -- expected hash");
  }

  option = rb_hash_aref(options, sym_id);
  id = (NIL_P(option) ? self_list->id : NUM2UINT(option));

  EXTRACT_STR_OPTION(self_list, name);
  EXTRACT_STR_OPTION(self_list, descr);
  EXTRACT_STR_OPTION(self_list, monitor);

  list = scamper_list_alloc(id, name, descr, monitor);
  if (!list) {
    return Qnil;
  }

  retval = Data_Wrap_Struct(cList, 0, sclist_free, list);
  if (NIL_P(sclist_init(retval))) {
    scamper_list_free(list);
    return Qnil;
  }

  return retval;
}

#write_to(file) ⇒ Object 



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# File 'ext/sclist.c', line 139

static VALUE sclist_write_to(VALUE self, VALUE file)
{
  return self;  /* nothing to do: users shouldn't write lists themselves */
}