103 lines
3.5 KiB
C
103 lines
3.5 KiB
C
/**
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* @file assert.c
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* @author Ambroz Bizjak <ambrop7@gmail.com>
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*
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* @section LICENSE
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the author nor the
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* names of its contributors may be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* @section DESCRIPTION
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*
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* Synopsis:
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* assert(string cond)
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* assert_false(string cond)
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*
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* Description:
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* If 'cond' is equal to the string "true" (assert) or "false" (assert_false),
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* does nothing. Otherwise, logs an error and initiates interpreter termination
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* with exit code 1, i.e. it is equivalent to calling exit("1").
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* Note that "assert_false(cond);" is not completely equivalent to
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* "not(cond) a; assert(a);", in case 'cond' is something other than "true"
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* or "false".
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*/
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#include <ncd/module_common.h>
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#include <generated/blog_channel_ncd_assert.h>
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static void func_new_common (NCDModuleInst *i, const struct NCDModuleInst_new_params *params, int is_false)
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{
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// check arguments
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NCDValRef cond_arg;
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if (!NCDVal_ListRead(params->args, 1, &cond_arg)) {
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ModuleLog(i, BLOG_ERROR, "wrong arity");
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goto fail0;
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}
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if (!NCDVal_IsString(cond_arg)) {
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ModuleLog(i, BLOG_ERROR, "wrong type");
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goto fail0;
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}
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// signal up
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NCDModuleInst_Backend_Up(i);
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// if failed, initiate exit (before up!)
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if ((!is_false && !NCDVal_StringEqualsId(cond_arg, NCD_STRING_TRUE)) ||
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(is_false && !NCDVal_StringEqualsId(cond_arg, NCD_STRING_FALSE))
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) {
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ModuleLog(i, BLOG_ERROR, "assertion failed");
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NCDModuleInst_Backend_InterpExit(i, 1);
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}
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return;
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fail0:
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NCDModuleInst_Backend_DeadError(i);
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}
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static void func_new (void *unused, NCDModuleInst *i, const struct NCDModuleInst_new_params *params)
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{
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func_new_common(i, params, 0);
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}
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static void func_new_false (void *unused, NCDModuleInst *i, const struct NCDModuleInst_new_params *params)
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{
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func_new_common(i, params, 1);
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}
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static struct NCDModule modules[] = {
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{
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.type = "assert",
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.func_new2 = func_new
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}, {
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.type = "assert_false",
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.func_new2 = func_new_false
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}, {
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.type = NULL
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}
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};
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const struct NCDModuleGroup ncdmodule_assert = {
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.modules = modules
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};
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