bool JSON::parse_json_value() {
int c;
c = skip_to_token();
if (c == -1) {
return false;
}
// Must start with object or array
if (level == 0) {
switch (c) {
case '{':
if (parse_json_object() == false) {
return false;
}
c = skip_to_token();
if (c > 0) {
mark_pos();
error(SYNTAX_ERROR, "Only one top level object/array is allowed.");
return false;
} else if (c < 0) {
return false;
}
return true;
case '[':
if (parse_json_array() == false) {
return false;
}
c = skip_to_token();
if (c > 0) {
mark_pos();
error(SYNTAX_ERROR, "Only one top level object/array is allowed.");
return false;
} else if (c < 0) {
return false;
}
return true;
case 0:
error(SYNTAX_ERROR, "EOS was encountered before any json declarations");
return false;
default:
error(SYNTAX_ERROR, "Json must start with an object or an array.");
return false;
}
} else { // level > 0
switch (c) {
case '{':
return parse_json_object();
case '[':
return parse_json_array();
case '"':
return parse_json_string();
case '-': case '0':
case '1': case '2': case '3':
case '4': case '5': case '6':
case '7': case '8': case '9':
return parse_json_number();
case 't':
return parse_json_symbol("true", JSON_TRUE);
case 'f':
return parse_json_symbol("false", JSON_FALSE);
case 'n':
return parse_json_symbol("null", JSON_NULL);
case 0:
error(SYNTAX_ERROR, "EOS was encountered when expecting a json value.");
return false;
default:
error(SYNTAX_ERROR, "Could not parse as a json value (did you forget to quote your strings?).");
return false;
}
}
}
static GVariant *
parse_json (JsonNode *node,
const GVariantType *type,
GError **error)
{
const GVariantType *element_type;
const gchar *str;
if (!g_variant_type_is_definite (type))
{
g_set_error (error, G_IO_ERROR, G_IO_ERROR_INVALID_DATA,
"Indefinite type '%.*s' is not supported",
(int)g_variant_type_get_string_length (type),
g_variant_type_peek_string (type));
return NULL;
}
if (g_variant_type_is_basic (type))
{
if (g_variant_type_equal (type, G_VARIANT_TYPE_BOOLEAN))
{
if (check_type (node, JSON_NODE_VALUE, G_TYPE_BOOLEAN, error))
return g_variant_new_boolean (json_node_get_boolean (node));
}
else if (g_variant_type_equal (type, G_VARIANT_TYPE_BYTE))
{
if (check_type (node, JSON_NODE_VALUE, G_TYPE_INT64, error))
return g_variant_new_byte (json_node_get_int (node));
}
else if (g_variant_type_equal (type, G_VARIANT_TYPE_INT16))
{
if (check_type (node, JSON_NODE_VALUE, G_TYPE_INT64, error))
return g_variant_new_int16 (json_node_get_int (node));
}
else if (g_variant_type_equal (type, G_VARIANT_TYPE_UINT16))
{
if (check_type (node, JSON_NODE_VALUE, G_TYPE_INT64, error))
return g_variant_new_uint16 (json_node_get_int (node));
}
else if (g_variant_type_equal (type, G_VARIANT_TYPE_INT32))
{
if (check_type (node, JSON_NODE_VALUE, G_TYPE_INT64, error))
return g_variant_new_int32 (json_node_get_int (node));
}
else if (g_variant_type_equal (type, G_VARIANT_TYPE_UINT32))
{
if (check_type (node, JSON_NODE_VALUE, G_TYPE_INT64, error))
return g_variant_new_uint32 (json_node_get_int (node));
}
else if (g_variant_type_equal (type, G_VARIANT_TYPE_INT64))
{
if (check_type (node, JSON_NODE_VALUE, G_TYPE_INT64, error))
return g_variant_new_int64 (json_node_get_int (node));
}
else if (g_variant_type_equal (type, G_VARIANT_TYPE_UINT64))
{
if (check_type (node, JSON_NODE_VALUE, G_TYPE_INT64, error))
return g_variant_new_uint64 (json_node_get_int (node));
}
else if (g_variant_type_equal (type, G_VARIANT_TYPE_DOUBLE))
{
if (check_type (node, JSON_NODE_VALUE, G_TYPE_INT64, NULL))
return g_variant_new_double (json_node_get_int (node));
else if (check_type (node, JSON_NODE_VALUE, G_TYPE_DOUBLE, error))
return g_variant_new_double (json_node_get_double (node));
}
else if (g_variant_type_equal (type, G_VARIANT_TYPE_STRING))
{
if (check_type (node, JSON_NODE_VALUE, G_TYPE_STRING, error))
return g_variant_new_string (json_node_get_string (node));
}
else if (g_variant_type_equal (type, G_VARIANT_TYPE_OBJECT_PATH))
{
if (check_type (node, JSON_NODE_VALUE, G_TYPE_STRING, error))
{
str = json_node_get_string (node);
if (g_variant_is_object_path (str))
return g_variant_new_object_path (str);
else
{
g_set_error (error, G_IO_ERROR, G_IO_ERROR_INVALID_DATA,
"Invalid object path '%s'", str);
return NULL;
}
}
}
else if (g_variant_type_equal (type, G_VARIANT_TYPE_SIGNATURE))
{
if (check_type (node, JSON_NODE_VALUE, G_TYPE_STRING, error))
{
str = json_node_get_string (node);
if (g_variant_is_signature (str))
return g_variant_new_signature (str);
else
{
g_set_error (error, G_IO_ERROR, G_IO_ERROR_INVALID_DATA,
"Invalid signature '%s'", str);
return NULL;
}
}
}
else
{
parse_not_supported (type, error);
}
}
else if (g_variant_type_is_variant (type))
{
return parse_json_variant (node, error);
}
else if (g_variant_type_is_array (type))
{
element_type = g_variant_type_element (type);
if (g_variant_type_is_dict_entry (element_type))
return parse_json_dictionary (node, element_type, error);
else
return parse_json_array (node, element_type, error);
}
else if (g_variant_type_is_tuple (type))
{
return parse_json_tuple (node, g_variant_type_first (type), error);
}
else
{
parse_not_supported (type, error);
}
return NULL;
}
