badvpn/ncd/modules/basic_functions.c

/**
 * @file basic_functions.c
 * @author Ambroz Bizjak <ambrop7@gmail.com>
 * 
 * @section LICENSE
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the author nor the
 *    names of its contributors may be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include <stddef.h>

#include <ncd/NCDModule.h>

#include <generated/blog_channel_ncd_basic_functions.h>

#define FunctionLog(params, ...) BContextLog(NCDModuleFunction_LogContext(params), __VA_ARGS__)

static int error_eval (NCDEvaluatorArgs args, NCDValMem *mem, NCDValRef *out, struct NCDModuleFunction_eval_params const *params)
{
    FunctionLog(params, BLOG_ERROR, "error: failing");
    return 0;
}

static int identity_eval (NCDEvaluatorArgs args, NCDValMem *mem, NCDValRef *out, struct NCDModuleFunction_eval_params const *params)
{
    if (NCDEvaluatorArgs_Count(&args) != 1) {
        FunctionLog(params, BLOG_ERROR, "identity: need one argument");
        return 0;
    }
    return NCDEvaluatorArgs_EvalArg(&args, 0, mem, out);
}

static struct NCDModuleFunction const functions[] = {
    {
        .func_name = "__error__",
        .func_eval = error_eval
    }, {
        .func_name = "__identity__",
        .func_eval = identity_eval
    }, {
        .func_name = NULL
    }
};

const struct NCDModuleGroup ncdmodule_basic_functions = {
    .functions = functions
};