static int unpack(scanner_t *s, json_t *root, va_list *ap)
{
switch(s->token)
{
case '{':
return unpack_object(s, root, ap);
case '[':
return unpack_array(s, root, ap);
case 's':
if(root && !json_is_string(root)) {
set_error(s, "<validation>", "Expected string, got %s",
type_name(root));
return -1;
}
if(!(s->flags & JSON_VALIDATE_ONLY)) {
const char **target;
target = va_arg(*ap, const char **);
if(!target) {
set_error(s, "<args>", "NULL string argument");
return -1;
}
if(root)
*target = json_string_value(root);
}
return 0;
case 'i':
if(root && !json_is_integer(root)) {
set_error(s, "<validation>", "Expected integer, got %s",
type_name(root));
return -1;
}
if(!(s->flags & JSON_VALIDATE_ONLY)) {
int *target = va_arg(*ap, int*);
if(root)
*target = (int)json_integer_value(root);
}
return 0;
case 'I':
if(root && !json_is_integer(root)) {
set_error(s, "<validation>", "Expected integer, got %s",
type_name(root));
return -1;
}
if(!(s->flags & JSON_VALIDATE_ONLY)) {
json_int_t *target = va_arg(*ap, json_int_t*);
if(root)
*target = json_integer_value(root);
}
static int unpack(scanner_t *s, json_t *root, va_list *ap)
{
switch(s->token)
{
case '{':
return unpack_object(s, root, ap);
case '[':
return unpack_array(s, root, ap);
case 's':
if(!json_is_string(root)) {
set_error(s, "<validation>", "Expected string, got %s",
type_name(root));
return -1;
}
if(!(s->flags & JSON_VALIDATE_ONLY)) {
const char **str;
str = va_arg(*ap, const char **);
if(!str) {
set_error(s, "<args>", "NULL string argument");
return -1;
}
*str = json_string_value(root);
}
return 0;
case 'i':
if(!json_is_integer(root)) {
set_error(s, "<validation>", "Expected integer, got %s",
type_name(root));
return -1;
}
if(!(s->flags & JSON_VALIDATE_ONLY))
*va_arg(*ap, int*) = (int) json_integer_value(root);
return 0;
case 'I':
if(!json_is_integer(root)) {
set_error(s, "<validation>", "Expected integer, got %s",
type_name(root));
return -1;
}
if(!(s->flags & JSON_VALIDATE_ONLY))
*va_arg(*ap, json_int_t*) = json_integer_value(root);
return 0;
case 'b':
if(!json_is_boolean(root)) {
set_error(s, "<validation>", "Expected true or false, got %s",
type_name(root));
return -1;
}
if(!(s->flags & JSON_VALIDATE_ONLY))
*va_arg(*ap, int*) = json_is_true(root);
return 0;
case 'f':
if(!json_is_real(root)) {
set_error(s, "<validation>", "Expected real, got %s",
type_name(root));
return -1;
}
if(!(s->flags & JSON_VALIDATE_ONLY))
*va_arg(*ap, double*) = json_real_value(root);
return 0;
case 'F':
if(!json_is_number(root)) {
set_error(s, "<validation>", "Expected real or integer, got %s",
type_name(root));
return -1;
}
if(!(s->flags & JSON_VALIDATE_ONLY))
*va_arg(*ap, double*) = json_number_value(root);
return 0;
case 'O':
if(!(s->flags & JSON_VALIDATE_ONLY))
json_incref(root);
/* Fall through */
case 'o':
if(!(s->flags & JSON_VALIDATE_ONLY))
*va_arg(*ap, json_t**) = root;
return 0;
case 'n':
/* Never assign, just validate */
if(!json_is_null(root)) {
set_error(s, "<validation>", "Expected null, got %s",
type_name(root));
return -1;
}
return 0;
default:
set_error(s, "<format>", "Unexpected format character '%c'",
s->token);
return -1;
}
}
