shithub: pprolog

ref: 480de114963ecee700ece5b8793916726c04b9ab
dir: /error.c/

#include <u.h>
#include <libc.h>
#include <bio.h>

#include "dat.h"
#include "fns.h"

Term *
instantiationerror(void)
{
	return mkatom(L"instantiation_error");
}

Term *
typeerror(Rune *validtype, Term *culprit)
{
	Term *valid = mkatom(validtype);
	valid->next = copyterm(culprit, nil);
	return mkcompound(L"type_error", 2, valid);
}

Term *
domainerror(Rune *validdomain, Term *culprit)
{
	Term *valid = mkatom(validdomain);
	valid->next = copyterm(culprit, nil);
	return mkcompound(L"domain_error", 2, valid);
}

Term *
existenceerror(Rune *objecttype, Term *culprit)
{
	Term *obj = mkatom(objecttype);
	obj->next = copyterm(culprit, nil);
	return mkcompound(L"existence_error", 2, obj);
}

Term *
permissionerror(Rune *operation, Rune *permissiontype, Term *culprit)
{
	Term *op = mkatom(operation);
	op->next = mkatom(permissiontype);
	op->next->next = copyterm(culprit, nil);
	return mkcompound(L"permission_error", 3, op);
}

Term *
representationerror(Rune *flag)
{
	Term *f = mkatom(flag);
	return mkcompound(L"representation_error", 1, f);
}

Term *
evaluationerror(Rune *error)
{
	Term *e = mkatom(error);
	return mkcompound(L"evaluation_error", 1, e);
}

Term *
resourceerror(Rune *resource)
{
	Term *res = mkatom(resource);
	return mkcompound(L"resource_error", 1, res);
}

Term *
syntaxerror(Rune *error)
{
	Term *e = mkatom(error);
	return mkcompound(L"syntax_error", 1, e);
}