yyjson_api_inline bool yyjson_ptr_ctx_append()

in include/yyjson/yyjson.h [7601:7653]

• 52 lines of code
• 12 McCabe index (conditional complexity)

yyjson_api_inline bool yyjson_ptr_ctx_append(yyjson_ptr_ctx *ctx,
                                             yyjson_mut_val *key,
                                             yyjson_mut_val *val) {
    yyjson_mut_val *ctn, *pre_key, *pre_val, *cur_key, *cur_val;
    if (!ctx || !ctx->ctn || !val) return false;
    ctn = ctx->ctn;
    
    if (yyjson_mut_is_obj(ctn)) {
        if (!key) return false;
        key->next = val;
        pre_key = ctx->pre;
        if (unsafe_yyjson_get_len(ctn) == 0) {
            val->next = key;
            ctn->uni.ptr = key;
            ctx->pre = key;
        } else if (!pre_key) {
            pre_key = (yyjson_mut_val *)ctn->uni.ptr;
            pre_val = pre_key->next;
            val->next = pre_val->next;
            pre_val->next = key;
            ctn->uni.ptr = key;
            ctx->pre = pre_key;
        } else {
            cur_key = pre_key->next->next;
            cur_val = cur_key->next;
            val->next = cur_val->next;
            cur_val->next = key;
            if (ctn->uni.ptr == cur_key) ctn->uni.ptr = key;
            ctx->pre = cur_key;
        }
    } else {
        pre_val = ctx->pre;
        if (unsafe_yyjson_get_len(ctn) == 0) {
            val->next = val;
            ctn->uni.ptr = val;
            ctx->pre = val;
        } else if (!pre_val) {
            pre_val = (yyjson_mut_val *)ctn->uni.ptr;
            val->next = pre_val->next;
            pre_val->next = val;
            ctn->uni.ptr = val;
            ctx->pre = pre_val;
        } else {
            cur_val = pre_val->next;
            val->next = cur_val->next;
            cur_val->next = val;
            if (ctn->uni.ptr == cur_val) ctn->uni.ptr = val;
            ctx->pre = cur_val;
        }
    }
    unsafe_yyjson_inc_len(ctn);
    return true;
}