Function get_field_value

lib/rb/ext/struct.c:239–248

static void write_anything(int ttype, VALUE value, VALUE protocol, VALUE field_info);

VALUE get_field_value(VALUE obj, VALUE field_name) {
  char name_buf[RSTRING_LEN(field_name) + 2];

  name_buf[0] = '@';
  strlcpy(&name_buf[1], RSTRING_PTR(field_name), RSTRING_LEN(field_name) + 1);

  VALUE value = rb_ivar_get(obj, rb_intern(name_buf));

  return value;
}

static void write_container(int ttype, VALUE field_info, VALUE value, VALUE protocol) {
  long sz, i;