private static int IsArrayInitializer(List <Exprent> list, int index)
{
Exprent current = list[index];
if (current.type == Exprent.Exprent_Assignment)
{
AssignmentExprent @as = (AssignmentExprent)current;
if (@as.GetRight().type == Exprent.Exprent_New && @as.GetLeft().type == Exprent.Exprent_Var)
{
NewExprent newExpr = (NewExprent)@as.GetRight();
if (newExpr.GetExprType().arrayDim > 0 && newExpr.GetLstDims().Count == 1 && (newExpr
.GetLstArrayElements().Count == 0) && newExpr.GetLstDims()[0].type == Exprent.Exprent_Const)
{
int size = (int)((ConstExprent)newExpr.GetLstDims()[0]).GetValue();
if (size == 0)
{
return(0);
}
VarExprent arrVar = (VarExprent)@as.GetLeft();
Dictionary <int, Exprent> mapInit = new Dictionary <int, Exprent>();
int i = 1;
while (index + i < list.Count && i <= size)
{
bool found = false;
Exprent expr = list[index + i];
if (expr.type == Exprent.Exprent_Assignment)
{
AssignmentExprent aas = (AssignmentExprent)expr;
if (aas.GetLeft().type == Exprent.Exprent_Array)
{
ArrayExprent arrExpr = (ArrayExprent)aas.GetLeft();
if (arrExpr.GetArray().type == Exprent.Exprent_Var && arrVar.Equals(arrExpr.GetArray
()) && arrExpr.GetIndex().type == Exprent.Exprent_Const)
{
// TODO: check for a number type. Failure extremely improbable, but nevertheless...
int constValue = ((ConstExprent)arrExpr.GetIndex()).GetIntValue();
if (constValue < size && !mapInit.ContainsKey(constValue))
{
if (!aas.GetRight().ContainsExprent(arrVar))
{
Sharpen.Collections.Put(mapInit, constValue, aas.GetRight());
found = true;
}
}
}
}
}
if (!found)
{
break;
}
i++;
}
double fraction = ((double)mapInit.Count) / size;
if ((arrVar.IsStack() && fraction > 0) || (size <= 7 && fraction >= 0.3) || (size
> 7 && fraction >= 0.7))
{
List <Exprent> lstRet = new List <Exprent>();
VarType arrayType = newExpr.GetNewType().DecreaseArrayDim();
ConstExprent defaultVal = ExprProcessor.GetDefaultArrayValue(arrayType);
for (int j = 0; j < size; j++)
{
lstRet.Add(defaultVal.Copy());
}
int dims = newExpr.GetNewType().arrayDim;
foreach (KeyValuePair <int, Exprent> ent in mapInit)
{
Exprent tempExpr = ent.Value;
lstRet[ent.Key] = tempExpr;
if (tempExpr.type == Exprent.Exprent_New)
{
NewExprent tempNewExpr = (NewExprent)tempExpr;
if (dims > 1 && !(tempNewExpr.GetLstArrayElements().Count == 0))
{
tempNewExpr.SetDirectArrayInit(true);
}
}
}
newExpr.SetLstArrayElements(lstRet);
return(mapInit.Count);
}
}
}
}
return(0);
}
