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/* * Copyright (c) 2014-2019 Pavel Kalvoda <me@pavelkalvoda.com> * * libcbor is free software; you can redistribute it and/or modify * it under the terms of the MIT license. See LICENSE for details. */ #include "cbor/common.h" #include "arrays.h" #include "bytestrings.h" #include "data.h" #include "floats_ctrls.h" #include "ints.h" #include "maps.h" #include "strings.h" #include "tags.h" bool cbor_isa_uint(const cbor_item_t *item) { return item->type == CBOR_TYPE_UINT; } bool cbor_isa_negint(const cbor_item_t *item) { return item->type == CBOR_TYPE_NEGINT; } bool cbor_isa_bytestring(const cbor_item_t *item) { return item->type == CBOR_TYPE_BYTESTRING; } bool cbor_isa_string(const cbor_item_t *item) { return item->type == CBOR_TYPE_STRING; } bool cbor_isa_array(const cbor_item_t *item) { return item->type == CBOR_TYPE_ARRAY; } bool cbor_isa_map(const cbor_item_t *item) { return item->type == CBOR_TYPE_MAP; } bool cbor_isa_tag(const cbor_item_t *item) { return item->type == CBOR_TYPE_TAG; } bool cbor_isa_float_ctrl(const cbor_item_t *item) { return item->type == CBOR_TYPE_FLOAT_CTRL; } cbor_type cbor_typeof(const cbor_item_t *item) { return item->type; } bool cbor_is_int(const cbor_item_t *item) { return cbor_isa_uint(item) || cbor_isa_negint(item); } bool cbor_is_bool(const cbor_item_t *item) { return cbor_isa_float_ctrl(item) && (cbor_ctrl_value(item) == CBOR_CTRL_FALSE || cbor_ctrl_value(item) == CBOR_CTRL_TRUE); } bool cbor_is_null(const cbor_item_t *item) { return cbor_isa_float_ctrl(item) && cbor_ctrl_value(item) == CBOR_CTRL_NULL; } bool cbor_is_undef(const cbor_item_t *item) { return cbor_isa_float_ctrl(item) && cbor_ctrl_value(item) == CBOR_CTRL_UNDEF; } bool cbor_is_float(const cbor_item_t *item) { return cbor_isa_float_ctrl(item) && !cbor_float_ctrl_is_ctrl(item); } cbor_item_t *cbor_incref(cbor_item_t *item) { item->refcount++; return item; } void cbor_decref(cbor_item_t **item_ref) { cbor_item_t *item = *item_ref; assert(item->refcount > 0); if (--item->refcount == 0) { switch (item->type) { case CBOR_TYPE_UINT: /* Fallthrough */ case CBOR_TYPE_NEGINT: /* Combined allocation, freeing the item suffices */ { break; } case CBOR_TYPE_BYTESTRING: { if (cbor_bytestring_is_definite(item)) { _CBOR_FREE(item->data); } else { /* We need to decref all chunks */ cbor_item_t **handle = cbor_bytestring_chunks_handle(item); for (size_t i = 0; i < cbor_bytestring_chunk_count(item); i++) cbor_decref(&handle[i]); _CBOR_FREE( ((struct cbor_indefinite_string_data *)item->data)->chunks); _CBOR_FREE(item->data); } break; } case CBOR_TYPE_STRING: { if (cbor_string_is_definite(item)) { _CBOR_FREE(item->data); } else { /* We need to decref all chunks */ cbor_item_t **handle = cbor_string_chunks_handle(item); for (size_t i = 0; i < cbor_string_chunk_count(item); i++) cbor_decref(&handle[i]); _CBOR_FREE( ((struct cbor_indefinite_string_data *)item->data)->chunks); _CBOR_FREE(item->data); } break; } case CBOR_TYPE_ARRAY: { /* Get all items and decref them */ cbor_item_t **handle = cbor_array_handle(item); size_t size = cbor_array_size(item); for (size_t i = 0; i < size; i++) if (handle[i] != NULL) cbor_decref(&handle[i]); _CBOR_FREE(item->data); break; } case CBOR_TYPE_MAP: { struct cbor_pair *handle = cbor_map_handle(item); for (size_t i = 0; i < item->metadata.map_metadata.end_ptr; i++, handle++) { cbor_decref(&handle->key); if (handle->value != NULL) cbor_decref(&handle->value); } _CBOR_FREE(item->data); break; }; case CBOR_TYPE_TAG: { if (item->metadata.tag_metadata.tagged_item != NULL) cbor_decref(&item->metadata.tag_metadata.tagged_item); _CBOR_FREE(item->data); break; } case CBOR_TYPE_FLOAT_CTRL: { /* Floats have combined allocation */ break; } } _CBOR_FREE(item); // TODO *item_ref = NULL; } } void cbor_intermediate_decref(cbor_item_t *item) { cbor_decref(&item); } size_t cbor_refcount(const cbor_item_t *item) { return item->refcount; } cbor_item_t *cbor_move(cbor_item_t *item) { item->refcount--; return item; }