/// <summary>
/// Compose UOM from signature which is not defined in source definition file. Find master UOMs, calculate scale, generate label. The signature could be of any complexity.
/// </summary>
/// <param name="ANewSignature">A new signature</param>
/// <returns>Newly composed UOM. Please, note, the new UOM signature could differ on source signature.</returns>
protected UOM Compose(string ANewSignature)
{
#if DEBUG
CheckSignature(ANewSignature);
#endif
Atom[] atoms = Atomize(ANewSignature);
// Search for master UOMs
UOM[] masters = new UOM[atoms.Length];
UOM newUOM = new UOM(); newUOM.Scale = 1.0; newUOM.Signature = ANewSignature;
for (int ct = 0; ct < atoms.Length; ct++)
{
Atom atom = atoms[ct];
if (!UOMs.ContainsKey(atom.AtomicUOM + "1"))
{
throw new Exception("UnitMan failed to compose new UOM for signature " +
ANewSignature + ". Atomic UOM " + atom.AtomicUOM + " not found.");
}
// Atomic UOM found in list. Check if it is master and update scale of new UOM if not.
UOM src = UOMs[atom.AtomicUOM + "1"].Clone();
if (src.IsMaster)
{
masters[ct] = src;
}
else
{
UOM master = src.Master;
// Update scale of new UOM
for (int cte = 0; cte < Atom.Abs(atom.Exponent); cte++)
{
newUOM.Scale *= atom.Exponent > 0 ? src.Scale : 1.0 / src.Scale;
}
masters[ct] = master.Clone();
}
}
// Masters are of positive exponents here. The exponents could be large than 1.
for (int ct = 0; ct < masters.Length; ct++)
{
masters[ct].Signature = masters[ct].Signature.Replace("1", Atom.Abs(atoms[ct].Exponent).ToString()); // That's why I need clone master UOM's
}
// Create the master signature
string masterSignature = masters[0].Signature;
for (int ct = 1; ct < masters.Length; ct++)
{
masterSignature += masters[ct].Signature;
}
Atom[] masterAtoms = Atomize(masterSignature);
for (int ct = 0; ct < masterAtoms.Length; ct++)
{
if (atoms[ct].Exponent < 0)
{
masterAtoms[ct].Neg(); // Restore signs
}
}
Array.Sort(masterAtoms);
masterSignature = Recombine(masterAtoms);
// Check the master and domain exists
if (!UOMs.ContainsKey(masterSignature))
{
throw new Exception("Domain for UOM " + ANewSignature + " not found");
}
UOM masterUOM = UOMs[masterSignature];
// Generate label
bool slash = false; newUOM.Label = "";
for (int ct = 0; ct < atoms.Length; ct++)
{
// check the slash shall be inserted
if (!slash && atoms[ct].Exponent < 0)
{
if (ct == 0)
{
newUOM.Label = "1/";
}
else
{
newUOM.Label += "/";
}
slash = true;
}
newUOM.Label += atoms[ct].AtomicUOM;
if (Math.Abs(atoms[ct].Exponent) > 1)
{
newUOM.Label += (int)Math.Abs(atoms[ct].Exponent);
}
}
newUOM.Name = newUOM.Label;
newUOM.Plural = newUOM.Label;
newUOM.Master = masterUOM;
UOMs.Add(newUOM.Signature, newUOM);
return(newUOM);
}