/*
* This is the main function for dumping any node.
*/
SV *
load_node(perl_yaml_loader_t *loader)
{
/* Get the next parser event */
if (!yaml_parser_parse(&loader->parser, &loader->event))
goto load_error;
/* Return NULL when we hit the end of a scope */
if (loader->event.type == YAML_DOCUMENT_END_EVENT ||
loader->event.type == YAML_MAPPING_END_EVENT ||
loader->event.type == YAML_SEQUENCE_END_EVENT) return NULL;
/* Handle loading a mapping */
if (loader->event.type == YAML_MAPPING_START_EVENT) {
SV *hash_ref;
char *tag = (char *)loader->event.data.mapping_start.tag;
/* Handle mapping tagged as a Perl hard reference */
if (tag && strEQ(tag, TAG_PERL_REF))
return load_scalar_ref(loader);
/* Handle mapping tagged as a Perl typeglob */
if (tag && strEQ(tag, TAG_PERL_GLOB))
return load_glob(loader);
/* Load the mapping into a hash ref and return it */
return load_mapping(loader, NULL);
}
/* Handle loading a sequence into an array */
if (loader->event.type == YAML_SEQUENCE_START_EVENT)
return load_sequence(loader);
/* Handle loading a scalar */
if (loader->event.type == YAML_SCALAR_EVENT)
return load_scalar(loader);
/* Handle loading an alias node */
if (loader->event.type == YAML_ALIAS_EVENT)
return load_alias(loader);
/* Some kind of error occurred */
if (loader->event.type == YAML_NO_EVENT)
croak(loader_error_msg(loader, NULL));
croak(ERRMSG "Invalid event '%d' at top level", (int) loader->event.type);
load_error:
croak(loader_error_msg(loader, NULL));
}
/*
* This is the main function for dumping any node.
*/
SV *
load_node(perl_yaml_loader_t *loader)
{
SV* return_sv = NULL;
/* This uses stack, but avoids (severe!) memory leaks */
yaml_event_t uplevel_event;
uplevel_event = loader->event;
/* Get the next parser event */
if (!yaml_parser_parse(&loader->parser, &loader->event))
goto load_error;
/* These events don't need yaml_event_delete */
/* Some kind of error occurred */
if (loader->event.type == YAML_NO_EVENT)
goto load_error;
/* Return NULL when we hit the end of a scope */
if (loader->event.type == YAML_DOCUMENT_END_EVENT ||
loader->event.type == YAML_MAPPING_END_EVENT ||
loader->event.type == YAML_SEQUENCE_END_EVENT) {
/* restore the uplevel event, so it can be properly deleted */
loader->event = uplevel_event;
return return_sv;
}
/* The rest all need cleanup */
switch (loader->event.type) {
char *tag;
/* Handle loading a mapping */
case YAML_MAPPING_START_EVENT:
tag = (char *)loader->event.data.mapping_start.tag;
/* Handle mapping tagged as a Perl hard reference */
if (tag && strEQ(tag, TAG_PERL_REF)) {
return_sv = load_scalar_ref(loader);
break;
}
/* Handle mapping tagged as a Perl typeglob */
if (tag && strEQ(tag, TAG_PERL_GLOB)) {
return_sv = load_glob(loader);
break;
}
return_sv = load_mapping(loader, NULL);
break;
/* Handle loading a sequence into an array */
case YAML_SEQUENCE_START_EVENT:
return_sv = load_sequence(loader);
break;
/* Handle loading a scalar */
case YAML_SCALAR_EVENT:
return_sv = load_scalar(loader);
break;
/* Handle loading an alias node */
case YAML_ALIAS_EVENT:
return_sv = load_alias(loader);
break;
default:
croak("%sInvalid event '%d' at top level", ERRMSG, (int) loader->event.type);
}
yaml_event_delete(&loader->event);
/* restore the uplevel event, so it can be properly deleted */
loader->event = uplevel_event;
return return_sv;
load_error:
croak("%s", loader_error_msg(loader, NULL));
}
