public void Add(int functionIndex, String functionName, int minParams, int maxParams,
byte returnClassCode, byte[] parameterClassCodes, bool hasFootnote)
{
FunctionMetadata fm = new FunctionMetadata(functionIndex, functionName, minParams, maxParams,
returnClassCode, parameterClassCodes);
int indexKey = functionIndex;
if (functionIndex > _maxFunctionIndex)
{
_maxFunctionIndex = functionIndex;
}
// allow function definitions to Change only if both previous and the new items have footnotes
FunctionMetadata prevFM;
prevFM = (FunctionMetadata)_functionDataByName[functionName];
if (prevFM != null)
{
if (!hasFootnote || !_mutatingFunctionIndexes.Contains(indexKey))
{
throw new Exception("Multiple entries for function name '" + functionName + "'");
}
_functionDataByIndex.Remove(prevFM.Index);
}
prevFM = (FunctionMetadata)_functionDataByIndex[indexKey];
if (prevFM != null)
{
if (!hasFootnote || !_mutatingFunctionIndexes.Contains(indexKey))
{
throw new Exception("Multiple entries for function index (" + functionIndex + ")");
}
_functionDataByName.Remove(prevFM.Name);
}
if (hasFootnote)
{
_mutatingFunctionIndexes.Add(indexKey);
}
_functionDataByIndex[indexKey]=fm;
_functionDataByName[functionName]=fm;
}
public FunctionMetadataRegistry Build()
{
FunctionMetadata[] jumbledArray = new FunctionMetadata[_functionDataByName.Count];
IEnumerator values = _functionDataByName.Values.GetEnumerator();
FunctionMetadata[] fdIndexArray = new FunctionMetadata[_maxFunctionIndex + 1];
while (values.MoveNext())
{
FunctionMetadata fd = (FunctionMetadata)values.Current;
fdIndexArray[fd.Index] = fd;
}
return new FunctionMetadataRegistry(fdIndexArray, _functionDataByName);
}
private void ValidateNumArgs(int numArgs, FunctionMetadata fm)
{
if (numArgs < fm.MinParams)
{
String msg = "Too few arguments To function '" + fm.Name + "'. ";
if (fm.HasFixedArgsLength)
{
msg += "Expected " + fm.MinParams;
}
else
{
msg += "At least " + fm.MinParams + " were expected";
}
msg += " but got " + numArgs + ".";
throw new FormulaParseException(msg);
}
if (numArgs > fm.MaxParams)
{
String msg = "Too many arguments To function '" + fm.Name + "'. ";
if (fm.HasFixedArgsLength)
{
msg += "Expected " + fm.MaxParams;
}
else
{
msg += "At most " + fm.MaxParams + " were expected";
}
msg += " but got " + numArgs + ".";
throw new FormulaParseException(msg);
}
}
/* package */
public FunctionMetadataRegistry(FunctionMetadata[] functionDataByIndex, Hashtable functionDataByName)
{
_functionDataByIndex = functionDataByIndex;
_functionDataByName = functionDataByName;
}