private bool compNodeSetString(Expr left, Expr right, VTDNav vn, int op)
{
int i, i1 = 0, stackSize;
String s;
try
{
s = right.evalString(vn);
vn.push2();
stackSize = vn.contextStack2.size;
while ((i = left.evalNodeSet(vn)) != -1)
{
int t = vn.getTokenType(i);
if (t != VTDNav.TOKEN_STARTING_TAG &&
t != VTDNav.TOKEN_DOCUMENT)
{
i1 = getStringVal(vn, i);
// if (i1==-1 && s.length()==0)
//return true;
if (i1 != -1)
{
bool b = compareVString1(i1, vn, s, op);
if (b)
{
left.reset(vn);
vn.contextStack2.size = stackSize;
vn.pop2();
return(b);
}
}
}
else
{
bool b = vn.XPathStringVal_Matches(i, s);
if (b)
{
left.reset(vn);
vn.contextStack2.size = stackSize;
vn.pop2();
return(b);
}
}
}
vn.contextStack2.size = stackSize;
vn.pop2();
left.reset(vn);
return(false); // compareEmptyNodeSet(op, s);
}
catch (Exception e)
{
throw new System.SystemException("Undefined behavior");
}
}
private bool compStringNodeSet(Expr left, Expr right, VTDNav vn, int op)
{
int i, i1 = 0, stackSize;
String s;
try
{
s = left.evalString(vn);
vn.push2();
stackSize = vn.contextStack2.size;
while ((i = right.evalNodeSet(vn)) != -1)
{
int t = vn.getTokenType(i);
if (t != VTDNav.TOKEN_STARTING_TAG
&& t != VTDNav.TOKEN_DOCUMENT)
{
i1 = getStringVal(vn, i);
if (i1 != -1)
{
bool b = compareVString2(i1, vn, s, op);
if (b)
{
right.reset(vn);
vn.contextStack2.size = stackSize;
vn.pop2();
return b;
}
}
}
else
{
bool b = vn.XPathStringVal_Matches(i, s);
if (b)
{
right.reset(vn);
vn.contextStack2.size = stackSize;
vn.pop2();
return b;
}
}
}
vn.contextStack2.size = stackSize;
vn.pop2();
right.reset(vn);
return false;// compareEmptyNodeSet(op, s);
}
catch (Exception e)
{
throw new System.SystemException("Undefined behavior");
}
}
/// <summary>
/// compute the binary expr whose operand is either = or !=
/// </summary>
/// <param name="op"></param>
/// <param name="vn"></param>
/// <returns></returns>
///
///
private bool computeComp(int op, VTDNav vn)
{
//int i, t, i1 = 0, stackSize, s1, s2;
String st1, st2;
switch (compType)
{
case NS_NS: return(compNodeSetNodeSet(left, right, vn, op));
case NS_N: return(compNodeSetNumerical(left, right, vn, op));
case NS_S: return(compNodeSetString(left, right, vn, op));
//case NS_B:
case N_NS: return(compNumericalNodeSet(left, right, vn, op));
//case N_N: break;
//case N_S: break;
//case N_B:
case S_NS: return(compStringNodeSet(left, right, vn, op));
//case S_N:
//case S_S:
//case S_B:
//case B_NS:
//case B_N:
//case B_S:
//default:break;
}
if (op == EQ || op == NE)
{
if (left.Boolean || right.Boolean)
{
if (op == EQ)
{
return(left.evalBoolean(vn) == right.evalBoolean(vn));
}
else
{
return(left.evalBoolean(vn) != right.evalBoolean(vn));
}
}
if (left.Numerical || right.Numerical)
{
if (op == EQ)
{
return(left.evalNumber(vn) == right.evalNumber(vn));
}
else
{
return(left.evalNumber(vn) != right.evalNumber(vn));
}
}
st1 = left.evalString(vn);
st2 = right.evalString(vn);
/*if (st1 == null || st2 == null)
* if (op == EQ)
* return false;
* else
* return true;*/
return((op == EQ) ? (st1.Equals(st2)) : (!st1.Equals(st2)));
}
return(compNumbers(left.evalNumber(vn), right.evalNumber(vn), op));
}
private bool compStringNodeSet(Expr left, Expr right, VTDNav vn, int op)
{
int i, i1 = 0, stackSize;
String s;
try
{
s = left.evalString(vn);
vn.push2();
stackSize = vn.contextStack2.size;
while ((i = right.evalNodeSet(vn)) != -1)
{
i1 = getStringVal(vn, i);
if (i1 != -1)
{
bool b = compareVString2(i1, vn, s, op);
if (b)
{
right.reset(vn);
vn.contextStack2.size = stackSize;
vn.pop2();
return b;
}
}
}
vn.contextStack2.size = stackSize;
vn.pop2();
right.reset(vn);
return false;// compareEmptyNodeSet(op, s);
}
catch (Exception e)
{
throw new System.SystemException("Undefined behavior");
}
}