private bool DoMatch(CodeBlock lhs, CodeBlock rhs, int count)
{
Log.DebugLine(this, " lhs: {0} at {1:X2}", lhs.Method, lhs.Instructions[lhs.Index].Untyped.Offset);
Log.DebugLine(this, " rhs: {0} at {1:X2}", rhs.Method, rhs.Instructions[rhs.Index].Untyped.Offset);
Log.DebugLine(this, " count: {0}", count);
for (int i = 0; i < count; ++i)
{
TypedInstruction left = lhs.Instructions[lhs.Index + i];
TypedInstruction right = rhs.Instructions[rhs.Index + i];
LoadLocal load1 = left as LoadLocal;
LoadLocal load2 = right as LoadLocal;
LoadLocalAddress load1b = left as LoadLocalAddress;
LoadLocalAddress load2b = right as LoadLocalAddress;
StoreLocal store1 = left as StoreLocal;
StoreLocal store2 = right as StoreLocal;
if (load1 != null && load2 != null)
{
// If we have real names for the local variables (from the mdb file) then
// life is good and we can compare the names. If not we're stuck: we can't
// simply use the variable index because we'll get false positives.
if (!load1.RealName)
{
Log.DebugLine(this, " can't match local name");
return false;
}
// This should be a temporary in which case we can't use the variable index.
else if (load1.Name.StartsWith("V_") && load1.Type.FullName != load2.Type.FullName)
{
Log.DebugLine(this, " {0} != {1} ({2} and {3})", left, right, load1.Type.FullName, load2.Type.FullName);
return false;
}
else if (!load1.Name.StartsWith("V_") && load1.Name != load2.Name)
{
Log.DebugLine(this, " {0} != {1} ({2} and {3})", left, right, load1.Name, load2.Name);
return false;
}
}
else if (load1b != null && load2b != null)
{
if (!load1b.RealName)
{
Log.DebugLine(this, " can't match local name");
return false;
}
else if (load1b.Name.StartsWith("V_") && load1b.Type.FullName != load2b.Type.FullName)
{
Log.DebugLine(this, " {0} != {1} ({2} and {3})", left, right, load1b.Type.FullName, load2b.Type.FullName);
return false;
}
else if (!load1b.Name.StartsWith("V_") && load1b.Name != load2b.Name)
{
Log.DebugLine(this, " {0} != {1} ({2} and {3})", left, right, load1b.Name, load2b.Name);
return false;
}
}
else if (store1 != null && store2 != null)
{
if (!store1.RealName)
{
Log.DebugLine(this, " can't match local name");
return false;
}
else if (store1.Name.StartsWith("V_") && store1.Type.FullName != store2.Type.FullName)
{
Log.DebugLine(this, " {0} != {1} ({2} and {3})", left, right, store1.Type.FullName, store2.Type.FullName);
return false;
}
else if (!store1.Name.StartsWith("V_") && store1.Name != store2.Name)
{
Log.DebugLine(this, " {0} != {1} ({2} and {3})", left, right, store1.Name, store2.Name);
return false;
}
}
else if (!left.Untyped.Matches(right.Untyped))
{
Log.DebugLine(this, " {0} != {1}", left, right);
return false;
}
}
return true;
}