C++ BlockSet::end方法代码示例

    Shape *MakeLoop(BlockSet &Blocks, BlockSet& Entries, BlockSet &NextEntries) {
      // Find the inner blocks in this loop. Proceed backwards from the entries until
      // you reach a seen block, collecting as you go.
      BlockSet InnerBlocks;
      BlockSet Queue = Entries;
      while (Queue.size() > 0) {
        Block *Curr = *(Queue.begin());
        Queue.erase(Queue.begin());
        if (InnerBlocks.find(Curr) == InnerBlocks.end()) {
          // This element is new, mark it as inner and remove from outer
          InnerBlocks.insert(Curr);
          Blocks.erase(Curr);
          // Add the elements prior to it
          for (BlockBranchMap::iterator iter = Curr->BranchesIn.begin(); iter != Curr->BranchesIn.end(); iter++) {
            Queue.insert(iter->first);
          }
        }
      }
      assert(InnerBlocks.size() > 0);

      for (BlockSet::iterator iter = InnerBlocks.begin(); iter != InnerBlocks.end(); iter++) {
        Block *Curr = *iter;
        for (BlockBranchMap::iterator iter = Curr->BranchesOut.begin(); iter != Curr->BranchesOut.end(); iter++) {
          Block *Possible = iter->first;
          if (InnerBlocks.find(Possible) == InnerBlocks.end() &&
              NextEntries.find(Possible) == NextEntries.find(Possible)) {
            NextEntries.insert(Possible);
          }
        }
      }

      PrintDebug("creating loop block:\n");
      DebugDump(InnerBlocks, "  inner blocks:");
      DebugDump(Entries, "  inner entries:");
      DebugDump(Blocks, "  outer blocks:");
      DebugDump(NextEntries, "  outer entries:");

      // TODO: Optionally hoist additional blocks into the loop

      LoopShape *Loop = new LoopShape();
      Notice(Loop);

      // Solipsize the loop, replacing with break/continue and marking branches as Processed (will not affect later calculations)
      // A. Branches to the loop entries become a continue to this shape
      for (BlockSet::iterator iter = Entries.begin(); iter != Entries.end(); iter++) {
        Solipsize(*iter, Branch::Continue, Loop, InnerBlocks);
      }
      // B. Branches to outside the loop (a next entry) become breaks on this shape
      for (BlockSet::iterator iter = NextEntries.begin(); iter != NextEntries.end(); iter++) {
        Solipsize(*iter, Branch::Break, Loop, InnerBlocks);
      }
      // Finish up
      Shape *Inner = Process(InnerBlocks, Entries, NULL);
      Loop->Inner = Inner;
      return Loop;
    }

 // If a block has multiple entries but no exits, and it is small enough, it is useful to split it.
 // A common example is a C++ function where everything ends up at a final exit block and does some
 // RAII cleanup. Without splitting, we will be forced to introduce labelled loops to allow
 // reaching the final block
 void SplitDeadEnds() {
   unsigned TotalCodeSize = 0;
   for (BlockSet::iterator iter = Live.begin(); iter != Live.end(); iter++) {
     Block *Curr = *iter;
     TotalCodeSize += strlen(Curr->Code);
   }
   BlockSet Splits;
   BlockSet Removed;
   //DebugDump(Live, "before");
   for (BlockSet::iterator iter = Live.begin(); iter != Live.end(); iter++) {
     Block *Original = *iter;
     if (Original->BranchesIn.size() <= 1 || Original->BranchesOut.size() > 0) continue; // only dead ends, for now
     if (contains(Original->BranchesOut, Original)) continue; // cannot split a looping node
     if (strlen(Original->Code)*(Original->BranchesIn.size()-1) > TotalCodeSize/5) continue; // if splitting increases raw code size by a significant amount, abort
     // Split the node (for simplicity, we replace all the blocks, even though we could have reused the original)
     PrintDebug("Splitting block %d\n", Original->Id);
     for (BlockSet::iterator iter = Original->BranchesIn.begin(); iter != Original->BranchesIn.end(); iter++) {
       Block *Prior = *iter;
       Block *Split = new Block(Original->Code, Original->BranchVar);
       Parent->AddBlock(Split);
       PrintDebug("  to %d\n", Split->Id);
       Split->BranchesIn.insert(Prior);
       Branch *Details = Prior->BranchesOut[Original];
       Prior->BranchesOut[Split] = new Branch(Details->Condition, Details->Code);
       Prior->BranchesOut.erase(Original);
       for (BlockBranchMap::iterator iter = Original->BranchesOut.begin(); iter != Original->BranchesOut.end(); iter++) {
         Block *Post = iter->first;
         Branch *Details = iter->second;
         Split->BranchesOut[Post] = new Branch(Details->Condition, Details->Code);
         Post->BranchesIn.insert(Split);
       }
       Splits.insert(Split);
       Removed.insert(Original);
     }
     for (BlockBranchMap::iterator iter = Original->BranchesOut.begin(); iter != Original->BranchesOut.end(); iter++) {
       Block *Post = iter->first;
       Post->BranchesIn.erase(Original);
     }
     //DebugDump(Live, "mid");
   }
   for (BlockSet::iterator iter = Splits.begin(); iter != Splits.end(); iter++) {
     Live.insert(*iter);
   }
   for (BlockSet::iterator iter = Removed.begin(); iter != Removed.end(); iter++) {
     Live.erase(*iter);
   }
   //DebugDump(Live, "after");
 }

Udm::Object MatLabUdmChart::distinguish( Udm::Object udmParent ) {

	SLSF::State state;

	static boost::regex stateflowRegex( "stateflow", boost::regex_constants::perl | boost::regex_constants::icase );
	boost::match_results<std::string::const_iterator> results;

	SLSF::Subsystem subsystemParent = SLSF::Subsystem::Cast( udmParent );

	BlockSet blockSet = subsystemParent.Block_kind_children();

	Udm::Object chartParent = udmParent;
	for( BlockSet::iterator blsItr = blockSet.begin() ; blsItr != blockSet.end() ; ++blsItr ) {
		Block block = *blsItr;
		std::string tag( block.Tag() );
		if (  regex_search( tag, results, stateflowRegex )  ) {
			chartParent = block;
			break;
		}
	}

#if PARADIGM == CyberComposition_PARADIGM
	state = SLSF::State::Create( chartParent );
#else
	state = SLSF::State::Create( UdmEngine::get_singleton().getTopLevelState() );
	SLSF::ConnectorRef connectorRef = SLSF::ConnectorRef::Create( chartParent );
	connectorRef.ref() = state;
#endif

	return state;
}

 void FindLive(Block *Root) {
   BlockList ToInvestigate;
   ToInvestigate.push_back(Root);
   while (ToInvestigate.size() > 0) {
     Block *Curr = ToInvestigate.front();
     ToInvestigate.pop_front();
     if (Live.find(Curr) != Live.end()) continue;
     Live.insert(Curr);
     for (BlockBranchMap::iterator iter = Curr->BranchesOut.begin(); iter != Curr->BranchesOut.end(); iter++) {
       ToInvestigate.push_back(iter->first);
     }
   }
 }

    // If a block has multiple entries but no exits, and it is small enough, it is useful to split it.
    // A common example is a C++ function where everything ends up at a final exit block and does some
    // RAII cleanup. Without splitting, we will be forced to introduce labelled loops to allow
    // reaching the final block
    void SplitDeadEnds() {
      int TotalCodeSize = 0;
      for (BlockSet::iterator iter = Live.begin(); iter != Live.end(); iter++) {
        Block *Curr = *iter;
        TotalCodeSize += strlen(Curr->Code);
      }

      for (BlockSet::iterator iter = Live.begin(); iter != Live.end(); iter++) {
        Block *Original = *iter;
        if (Original->BranchesIn.size() <= 1 || Original->BranchesOut.size() > 0) continue;
        if (strlen(Original->Code)*(Original->BranchesIn.size()-1) > TotalCodeSize/5) continue; // if splitting increases raw code size by a significant amount, abort
        // Split the node (for simplicity, we replace all the blocks, even though we could have reused the original)
        for (BlockBranchMap::iterator iter = Original->BranchesIn.begin(); iter != Original->BranchesIn.end(); iter++) {
          Block *Prior = iter->first;
          Block *Split = new Block(Original->Code);
          Split->BranchesIn[Prior] = new Branch(NULL);
          Prior->BranchesOut[Split] = new Branch(Prior->BranchesOut[Original]->Condition, Prior->BranchesOut[Original]->Code);
          Prior->BranchesOut.erase(Original);
          Parent->AddBlock(Split);
          Live.insert(Split);
        }
      }
    }

void TextAutosizer::FingerprintMapper::assertMapsAreConsistent()
{
    // For each fingerprint -> block mapping in m_blocksForFingerprint we should have an associated
    // map from block -> fingerprint in m_fingerprints.
    ReverseFingerprintMap::iterator end = m_blocksForFingerprint.end();
    for (ReverseFingerprintMap::iterator fingerprintIt = m_blocksForFingerprint.begin(); fingerprintIt != end; ++fingerprintIt) {
        Fingerprint fingerprint = fingerprintIt->key;
        BlockSet* blocks = fingerprintIt->value.get();
        for (BlockSet::iterator blockIt = blocks->begin(); blockIt != blocks->end(); ++blockIt) {
            const LayoutBlock* block = (*blockIt);
            ASSERT(m_fingerprints.get(block) == fingerprint);
        }
    }
}

 Shape *MakeMultiple(BlockSet &Blocks, BlockSet& Entries, BlockBlockSetMap& IndependentGroups, Shape *Prev, BlockSet &NextEntries) {
   PrintDebug("creating multiple block with %d inner groups\n", IndependentGroups.size());
   bool Fused = !!(Shape::IsSimple(Prev));
   MultipleShape *Multiple = new MultipleShape();
   Notice(Multiple);
   BlockSet CurrEntries;
   for (BlockBlockSetMap::iterator iter = IndependentGroups.begin(); iter != IndependentGroups.end(); iter++) {
     Block *CurrEntry = iter->first;
     BlockSet &CurrBlocks = iter->second;
     PrintDebug("  multiple group with entry %d:\n", CurrEntry->Id);
     DebugDump(CurrBlocks, "    ");
     // Create inner block
     CurrEntries.clear();
     CurrEntries.insert(CurrEntry);
     for (BlockSet::iterator iter = CurrBlocks.begin(); iter != CurrBlocks.end(); iter++) {
       Block *CurrInner = *iter;
       // Remove the block from the remaining blocks
       Blocks.erase(CurrInner);
       // Find new next entries and fix branches to them
       for (BlockBranchMap::iterator iter = CurrInner->BranchesOut.begin(); iter != CurrInner->BranchesOut.end();) {
         Block *CurrTarget = iter->first;
         BlockBranchMap::iterator Next = iter;
         Next++;
         if (CurrBlocks.find(CurrTarget) == CurrBlocks.end()) {
           NextEntries.insert(CurrTarget);
           Solipsize(CurrTarget, Branch::Break, Multiple, CurrBlocks); 
         }
         iter = Next; // increment carefully because Solipsize can remove us
       }
     }
     Multiple->InnerMap[CurrEntry] = Process(CurrBlocks, CurrEntries, NULL);
     // If we are not fused, then our entries will actually be checked
     if (!Fused) {
       CurrEntry->IsCheckedMultipleEntry = true;
     }
   }
   DebugDump(Blocks, "  remaining blocks after multiple:");
   // Add entries not handled as next entries, they are deferred
   for (BlockSet::iterator iter = Entries.begin(); iter != Entries.end(); iter++) {
     Block *Entry = *iter;
     if (IndependentGroups.find(Entry) == IndependentGroups.end()) {
       NextEntries.insert(Entry);
     }
   }
   return Multiple;
 }

 // Converts/processes all branchings to a specific target
 void Solipsize(Block *Target, Branch::FlowType Type, Shape *Ancestor, BlockSet &From) {
   PrintDebug("Solipsizing branches into %d\n", Target->Id);
   DebugDump(From, "  relevant to solipsize: ");
   for (BlockSet::iterator iter = Target->BranchesIn.begin(); iter != Target->BranchesIn.end();) {
     Block *Prior = *iter;
     if (From.find(Prior) == From.end()) {
       iter++;
       continue;
     }
     Branch *PriorOut = Prior->BranchesOut[Target];
     PriorOut->Ancestor = Ancestor;
     PriorOut->Type = Type;
     if (MultipleShape *Multiple = Shape::IsMultiple(Ancestor)) {
       Multiple->NeedLoop++; // We are breaking out of this Multiple, so need a loop
     }
     iter++; // carefully increment iter before erasing
     Target->BranchesIn.erase(Prior);
     Target->ProcessedBranchesIn.insert(Prior);
     Prior->BranchesOut.erase(Target);
     Prior->ProcessedBranchesOut[Target] = PriorOut;
     PrintDebug("  eliminated branch from %d\n", Prior->Id);
   }
 }

    // For each entry, find the independent group reachable by it. The independent group is
    // the entry itself, plus all the blocks it can reach that cannot be directly reached by another entry. Note that we
    // ignore directly reaching the entry itself by another entry.
    void FindIndependentGroups(BlockSet &Blocks, BlockSet &Entries, BlockBlockSetMap& IndependentGroups) {
      typedef std::map<Block*, Block*> BlockBlockMap;

      struct HelperClass {
        BlockBlockSetMap& IndependentGroups;
        BlockBlockMap Ownership; // For each block, which entry it belongs to. We have reached it from there.

        HelperClass(BlockBlockSetMap& IndependentGroupsInit) : IndependentGroups(IndependentGroupsInit) {}
        void InvalidateWithChildren(Block *New) { // TODO: rename New
          BlockList ToInvalidate; // Being in the list means you need to be invalidated
          ToInvalidate.push_back(New);
          while (ToInvalidate.size() > 0) {
            Block *Invalidatee = ToInvalidate.front();
            ToInvalidate.pop_front();
            Block *Owner = Ownership[Invalidatee];
            if (IndependentGroups.find(Owner) != IndependentGroups.end()) { // Owner may have been invalidated, do not add to IndependentGroups!
              IndependentGroups[Owner].erase(Invalidatee);
            }
            if (Ownership[Invalidatee]) { // may have been seen before and invalidated already
              Ownership[Invalidatee] = NULL;
              for (BlockBranchMap::iterator iter = Invalidatee->BranchesOut.begin(); iter != Invalidatee->BranchesOut.end(); iter++) {
                Block *Target = iter->first;
                BlockBlockMap::iterator Known = Ownership.find(Target);
                if (Known != Ownership.end()) {
                  Block *TargetOwner = Known->second;
                  if (TargetOwner) {
                    ToInvalidate.push_back(Target);
                  }
                }
              }
            }
          }
        }
      };
      HelperClass Helper(IndependentGroups);

      // We flow out from each of the entries, simultaneously.
      // When we reach a new block, we add it as belonging to the one we got to it from.
      // If we reach a new block that is already marked as belonging to someone, it is reachable by
      // two entries and is not valid for any of them. Remove it and all it can reach that have been
      // visited.

      BlockList Queue; // Being in the queue means we just added this item, and we need to add its children
      for (BlockSet::iterator iter = Entries.begin(); iter != Entries.end(); iter++) {
        Block *Entry = *iter;
        Helper.Ownership[Entry] = Entry;
        IndependentGroups[Entry].insert(Entry);
        Queue.push_back(Entry);
      }
      while (Queue.size() > 0) {
        Block *Curr = Queue.front();
        Queue.pop_front();
        Block *Owner = Helper.Ownership[Curr]; // Curr must be in the ownership map if we are in the queue
        if (!Owner) continue; // we have been invalidated meanwhile after being reached from two entries
        // Add all children
        for (BlockBranchMap::iterator iter = Curr->BranchesOut.begin(); iter != Curr->BranchesOut.end(); iter++) {
          Block *New = iter->first;
          BlockBlockMap::iterator Known = Helper.Ownership.find(New);
          if (Known == Helper.Ownership.end()) {
            // New node. Add it, and put it in the queue
            Helper.Ownership[New] = Owner;
            IndependentGroups[Owner].insert(New);
            Queue.push_back(New);
            continue;
          }
          Block *NewOwner = Known->second;
          if (!NewOwner) continue; // We reached an invalidated node
          if (NewOwner != Owner) {
            // Invalidate this and all reachable that we have seen - we reached this from two locations
            Helper.InvalidateWithChildren(New);
          }
          // otherwise, we have the same owner, so do nothing
        }
      }

      // Having processed all the interesting blocks, we remain with just one potential issue:
      // If a->b, and a was invalidated, but then b was later reached by someone else, we must
      // invalidate b. To check for this, we go over all elements in the independent groups,
      // if an element has a parent which does *not* have the same owner, we must remove it
      // and all its children.

      for (BlockSet::iterator iter = Entries.begin(); iter != Entries.end(); iter++) {
        BlockSet &CurrGroup = IndependentGroups[*iter];
        BlockList ToInvalidate;
        for (BlockSet::iterator iter = CurrGroup.begin(); iter != CurrGroup.end(); iter++) {
          Block *Child = *iter;
          for (BlockBranchMap::iterator iter = Child->BranchesIn.begin(); iter != Child->BranchesIn.end(); iter++) {
            Block *Parent = iter->first;
            if (Helper.Ownership[Parent] != Helper.Ownership[Child]) {
              ToInvalidate.push_back(Child);
            }
          }
        }
        while (ToInvalidate.size() > 0) {
          Block *Invalidatee = ToInvalidate.front();
          ToInvalidate.pop_front();
          Helper.InvalidateWithChildren(Invalidatee);
//.........这里部分代码省略.........

    Shape *MakeLoop(BlockSet &Blocks, BlockSet& Entries, BlockSet &NextEntries) {
      // Find the inner blocks in this loop. Proceed backwards from the entries until
      // you reach a seen block, collecting as you go.
      BlockSet InnerBlocks;
      BlockSet Queue = Entries;
      while (Queue.size() > 0) {
        Block *Curr = *(Queue.begin());
        Queue.erase(Queue.begin());
        if (!contains(InnerBlocks, Curr)) {
          // This element is new, mark it as inner and remove from outer
          InnerBlocks.insert(Curr);
          Blocks.erase(Curr);
          // Add the elements prior to it
          for (BlockSet::iterator iter = Curr->BranchesIn.begin(); iter != Curr->BranchesIn.end(); iter++) {
            Queue.insert(*iter);
          }
#if 0
          // Add elements it leads to, if they are dead ends. There is no reason not to hoist dead ends
          // into loops, as it can avoid multiple entries after the loop
          for (BlockBranchMap::iterator iter = Curr->BranchesOut.begin(); iter != Curr->BranchesOut.end(); iter++) {
            Block *Target = iter->first;
            if (Target->BranchesIn.size() <= 1 && Target->BranchesOut.size() == 0) {
              Queue.insert(Target);
            }
          }
#endif
        }
      }
      assert(InnerBlocks.size() > 0);

      for (BlockSet::iterator iter = InnerBlocks.begin(); iter != InnerBlocks.end(); iter++) {
        Block *Curr = *iter;
        for (BlockBranchMap::iterator iter = Curr->BranchesOut.begin(); iter != Curr->BranchesOut.end(); iter++) {
          Block *Possible = iter->first;
          if (!contains(InnerBlocks, Possible)) {
            NextEntries.insert(Possible);
          }
        }
      }

#if 0
      // We can avoid multiple next entries by hoisting them into the loop.
      if (NextEntries.size() > 1) {
        BlockBlockSetMap IndependentGroups;
        FindIndependentGroups(NextEntries, IndependentGroups, &InnerBlocks);

        while (IndependentGroups.size() > 0 && NextEntries.size() > 1) {
          Block *Min = NULL;
          int MinSize = 0;
          for (BlockBlockSetMap::iterator iter = IndependentGroups.begin(); iter != IndependentGroups.end(); iter++) {
            Block *Entry = iter->first;
            BlockSet &Blocks = iter->second;
            if (!Min || Blocks.size() < MinSize) { // TODO: code size, not # of blocks
              Min = Entry;
              MinSize = Blocks.size();
            }
          }
          // check how many new entries this would cause
          BlockSet &Hoisted = IndependentGroups[Min];
          bool abort = false;
          for (BlockSet::iterator iter = Hoisted.begin(); iter != Hoisted.end() && !abort; iter++) {
            Block *Curr = *iter;
            for (BlockBranchMap::iterator iter = Curr->BranchesOut.begin(); iter != Curr->BranchesOut.end(); iter++) {
              Block *Target = iter->first;
              if (Hoisted.find(Target) == Hoisted.end() && NextEntries.find(Target) == NextEntries.end()) {
                // abort this hoisting
                abort = true;
                break;
              }
            }
          }
          if (abort) {
            IndependentGroups.erase(Min);
            continue;
          }
          // hoist this entry
          PrintDebug("hoisting %d into loop\n", Min->Id);
          NextEntries.erase(Min);
          for (BlockSet::iterator iter = Hoisted.begin(); iter != Hoisted.end(); iter++) {
            Block *Curr = *iter;
            InnerBlocks.insert(Curr);
            Blocks.erase(Curr);
          }
          IndependentGroups.erase(Min);
        }
      }
#endif

      PrintDebug("creating loop block:\n");
      DebugDump(InnerBlocks, "  inner blocks:");
      DebugDump(Entries, "  inner entries:");
      DebugDump(Blocks, "  outer blocks:");
      DebugDump(NextEntries, "  outer entries:");

      LoopShape *Loop = new LoopShape();
      Notice(Loop);

      // Solipsize the loop, replacing with break/continue and marking branches as Processed (will not affect later calculations)
      // A. Branches to the loop entries become a continue to this shape
      for (BlockSet::iterator iter = Entries.begin(); iter != Entries.end(); iter++) {
//.........这里部分代码省略.........