removed bogus region checks

git-svn-id: https://dng.biozentrum.unibas.ch/svn/openstructure/trunk@2210 5a81b35b-ba03-0410-adc8-b2c5c5119f08

modules/seq/base/src/alignment_handle.cc

@@ -203,8 +203,8 @@ void AlignmentHandle::ShiftRegion(int start, int end, int amount,
 AlignedRegion AlignmentHandle::MakeRegion(int start, int n, int master) const
 {
   this->CheckValidity();
-  if(start<0 || n < 0 || start >= n || start + n > this->GetLength()){
-    throw std::out_of_range("Region not valid");
+  if((start<0 )||( n < 0 )|| ((start + n) > this->GetLength())){
+    throw std::out_of_range("invalid region");
   }
   return AlignedRegion(*this, start, start+n, master);
 }

modules/seq/base/src/impl/sequence_impl.cc

@@ -170,7 +170,7 @@ int SequenceImpl::GetLength() const {
 
 char SequenceImpl::GetOneLetterCode(int position) const
 {
-  if (position<0 || position>=static_cast<int>(seq_string_.length()))
+  if (position<0 || position>static_cast<int>(seq_string_.length()))
     throw Error("Position is not covered in sequence");
   return seq_string_[position];
 }
@@ -281,7 +281,7 @@ void SequenceImpl::Replace(const String& str,int start, int end)
 void SequenceImpl::ShiftRegion(int start, int end, int amount)
 {
   if(start > end || start + amount <= 0 || end + amount > this->GetLength()){
-    throw std::out_of_range("Region not valid");
+    throw std::out_of_range("ShiftRegion: invalid region");
   }
   String str1=seq_string_.substr(start, end-start);
   if (amount<0) {