/// <summary>
///
/// </summary>
/// <param name="module"></param>
/// <param name="goal"></param>
/// <returns></returns>
public static bool Call(string module, string goal)
{
bool bRet;
using (var q = new SwiPrologQuery(module, "call", new SwiPrologTermVector(new SwiPrologTerm(goal))))
{
bRet = q.NextSolution();
q.Free(true);
}
return(bRet);
}
#pragma warning disable 1573
// Parameter 'predicate' has no matching param tag in the XML comment for 'SbsSW.SwiPlCs.PlQuery.PlCall(string, string, SbsSW.SwiPlCs.PlTermV)' (but other parameters do)
/// <inheritdoc cref="Call(string, SwiPrologTermVector)" />
/// <summary>As <see cref="Call(string, SwiPrologTermVector)"/> but locating the predicate in the named module.</summary>
/// <param name="module">locating the predicate in the named module.</param>
public static bool Call(string module, string predicate, SwiPrologTermVector args)
{
bool bRet;
using (var q = new SwiPrologQuery(module, predicate, args))
{
bRet = q.NextSolution();
q.Free(false);
}
return(bRet);
}
#pragma warning disable 1573
/// <inheritdoc cref="CallQuery(System.String)" />
/// <summary>As <see cref="CallQuery(string)"/> but executed in the named module.</summary>
/// <param name="module">The modulename in which the query is executed</param>
public static SwiPrologTerm CallQuery(string module, string goal)
{
SwiPrologTerm retVal;
using (var q = new SwiPrologQuery(module, goal))
{
// find the variable or throw an exception
SwiPrologTerm?t = null;
if (q.Variables.Count == 1)
{
t = new SwiPrologTerm(q.Variables[0].Value.TermRef);
}
else
{
for (int i = 0; i < q._av.Size; i++)
{
if (!q._av[i].IsVariable)
{
continue;
}
if (t == null)
{
t = new SwiPrologTerm(q._av[i].TermRef);
}
else
{
throw new ArgumentException("More than one Variable in " + goal);
}
}
}
if (t == null)
{
throw new ArgumentException("No Variable found in " + goal);
}
if (q.NextSolution())
{
retVal = (SwiPrologTerm)t;
}
else
{
retVal = new SwiPrologTerm(); // null
}
q.Free(false);
}
return(retVal);
}
