convert a lot of places to use IsNegative instead of checking by hand

for the three different dependencies

apt-pkg/algorithms.cc

@@ -101,9 +101,7 @@ bool pkgSimulate::Install(PkgIterator iPkg,string /*File*/)
 	 DepIterator Start;
 	 DepIterator End;
 	 D.GlobOr(Start,End);
-	 if (Start->Type == pkgCache::Dep::Conflicts ||
-	     Start->Type == pkgCache::Dep::DpkgBreaks ||
-	     Start->Type == pkgCache::Dep::Obsoletes ||
+	 if (Start.IsNegative() == true ||
 	     End->Type == pkgCache::Dep::PreDepends)
          {
 	    if ((Sim[End] & pkgDepCache::DepGInstall) == 0)
@@ -695,9 +693,7 @@ bool pkgProblemResolver::DoUpgrade(pkgCache::PkgIterator Pkg)
 	    {
 	       /* We let the algorithm deal with conflicts on its next iteration,
 		it is much smarter than us */
-	       if (Start->Type == pkgCache::Dep::Conflicts || 
-		   Start->Type == pkgCache::Dep::DpkgBreaks || 
-		   Start->Type == pkgCache::Dep::Obsoletes)
+	       if (Start.IsNegative() == true)
 		   break;
 	       
 	       if (Debug == true)
@@ -926,9 +922,7 @@ bool pkgProblemResolver::Resolve(bool BrokenFix)
 	       if a package has a dep on another package that cant be found */
 	    SPtrArray<pkgCache::Version *> VList = Start.AllTargets();
 	    if (*VList == 0 && (Flags[I->ID] & Protected) != Protected &&
-		Start->Type != pkgCache::Dep::Conflicts &&
-		Start->Type != pkgCache::Dep::DpkgBreaks &&
-		Start->Type != pkgCache::Dep::Obsoletes &&
+		Start.IsNegative() == false &&
 		Cache[I].NowBroken() == false)
 	    {	       
 	       if (InOr == true)
@@ -953,10 +947,7 @@ bool pkgProblemResolver::Resolve(bool BrokenFix)
                   at is not the currently selected version of the 
                   package, which means it is not necessary to 
                   remove/keep */
-               if (Cache[Pkg].InstallVer != Ver &&
-                   (Start->Type == pkgCache::Dep::Conflicts ||
-                    Start->Type == pkgCache::Dep::DpkgBreaks ||
-                    Start->Type == pkgCache::Dep::Obsoletes)) 
+               if (Cache[Pkg].InstallVer != Ver && Start.IsNegative() == true)
                {
                   if (Debug) 
                      clog << "  Conflicts//Breaks against version " 
@@ -974,9 +965,7 @@ bool pkgProblemResolver::Resolve(bool BrokenFix)
 	          fiddle with the VList package */
 	       if (Scores[I->ID] <= Scores[Pkg->ID] ||
 		   ((Cache[Start] & pkgDepCache::DepNow) == 0 &&
-		    End->Type != pkgCache::Dep::Conflicts &&
-		    End->Type != pkgCache::Dep::DpkgBreaks &&
-		    End->Type != pkgCache::Dep::Obsoletes))
+		    End.IsNegative() == false))
 	       {
 		  // Try a little harder to fix protected packages..
 		  if ((Flags[I->ID] & Protected) == Protected)
@@ -1083,10 +1072,8 @@ bool pkgProblemResolver::Resolve(bool BrokenFix)
 	    }
 
 	    // Hm, nothing can possibly satisify this dep. Nuke it.
-	    if (VList[0] == 0 && 
-		Start->Type != pkgCache::Dep::Conflicts &&
-		Start->Type != pkgCache::Dep::DpkgBreaks &&
-		Start->Type != pkgCache::Dep::Obsoletes &&
+	    if (VList[0] == 0 &&
+		Start.IsNegative() == false &&
 		(Flags[I->ID] & Protected) != Protected)
 	    {
 	       bool Installed = Cache[I].Install();
@@ -1132,9 +1119,7 @@ bool pkgProblemResolver::Resolve(bool BrokenFix)
 	       Change = true;
 	       if ((Cache[J->Dep] & pkgDepCache::DepGNow) == 0)
 	       {
-		  if (J->Dep->Type == pkgCache::Dep::Conflicts || 
-		      J->Dep->Type == pkgCache::Dep::DpkgBreaks ||
-		      J->Dep->Type == pkgCache::Dep::Obsoletes)
+		  if (J->Dep.IsNegative() == true)
 		  {
 		     if (Debug == true)
 			clog << "  Fixing " << I.FullName(false) << " via remove of " << J->Pkg.FullName(false) << endl;

apt-pkg/depcache.cc

@@ -339,8 +339,7 @@ bool pkgDepCache::CheckDep(DepIterator Dep,int Type,PkgIterator &Res)
    /* Check simple depends. A depends -should- never self match but 
       we allow it anyhow because dpkg does. Technically it is a packaging
       bug. Conflicts may never self match */
-   if (Dep.TargetPkg() != Dep.ParentPkg() ||
-       (Dep->Type != Dep::Conflicts && Dep->Type != Dep::DpkgBreaks && Dep->Type != Dep::Obsoletes))
+   if (Dep.TargetPkg() != Dep.ParentPkg() || Dep.IsNegative() == false)
    {
       PkgIterator Pkg = Dep.TargetPkg();
       // Check the base package
@@ -370,8 +369,7 @@ bool pkgDepCache::CheckDep(DepIterator Dep,int Type,PkgIterator &Res)
    {
       /* Provides may never be applied against the same package (or group)
          if it is a conflicts. See the comment above. */
-      if (P.OwnerPkg()->Group == Pkg->Group &&
-	  (Dep->Type == Dep::Conflicts || Dep->Type == Dep::DpkgBreaks))
+      if (P.OwnerPkg()->Group == Pkg->Group && Dep.IsNegative() == true)
 	 continue;
       
       // Check if the provides is a hit
@@ -594,9 +592,7 @@ void pkgDepCache::BuildGroupOrs(VerIterator const &V)
 
       /* Invert for Conflicts. We have to do this twice to get the
          right sense for a conflicts group */
-      if (D->Type == Dep::Conflicts ||
-	  D->Type == Dep::DpkgBreaks ||
-	  D->Type == Dep::Obsoletes)
+      if (D.IsNegative() == true)
 	 State = ~State;
       
       // Add to the group if we are within an or..
@@ -607,9 +603,7 @@ void pkgDepCache::BuildGroupOrs(VerIterator const &V)
 	 Group = 0;
       
       // Invert for Conflicts
-      if (D->Type == Dep::Conflicts ||
-	  D->Type == Dep::DpkgBreaks ||
-	  D->Type == Dep::Obsoletes)
+      if (D.IsNegative() == true)
 	 State = ~State;
    }	 
 }
@@ -742,9 +736,7 @@ void pkgDepCache::Update(OpProgress *Prog)
 	       Group = 0;
 
 	    // Invert for Conflicts
-	    if (D->Type == Dep::Conflicts ||
-		D->Type == Dep::DpkgBreaks ||
-		D->Type == Dep::Obsoletes)
+	    if (D.IsNegative() == true)
 	       State = ~State;
 	 }
       }
@@ -774,9 +766,7 @@ void pkgDepCache::Update(DepIterator D)
       State = DependencyState(D);
     
       // Invert for Conflicts
-      if (D->Type == Dep::Conflicts ||
-	  D->Type == Dep::DpkgBreaks ||
-	  D->Type == Dep::Obsoletes)
+      if (D.IsNegative() == true)
 	 State = ~State;
 
       RemoveStates(D.ParentPkg());
@@ -1222,8 +1212,7 @@ void pkgDepCache::MarkInstall(PkgIterator const &Pkg,bool AutoInst,
       /* For conflicts we just de-install the package and mark as auto,
          Conflicts may not have or groups.  For dpkg's Breaks we try to
          upgrade the package. */
-      if (Start->Type == Dep::Conflicts || Start->Type == Dep::Obsoletes ||
-	  Start->Type == Dep::DpkgBreaks)
+      if (Start.IsNegative() == true)
       {
 	 for (Version **I = List; *I != 0; I++)
 	 {

apt-pkg/orderlist.cc

@@ -507,15 +507,11 @@ bool pkgOrderList::VisitProvides(DepIterator D,bool Critical)
       if (Cache[Pkg].Keep() == true && Pkg.State() == PkgIterator::NeedsNothing)
 	 continue;
       
-      if (D->Type != pkgCache::Dep::Conflicts &&
-	  D->Type != pkgCache::Dep::DpkgBreaks &&
-	  D->Type != pkgCache::Dep::Obsoletes &&
+      if (D.IsNegative() == false &&
 	  Cache[Pkg].InstallVer != *I)
 	 continue;
       
-      if ((D->Type == pkgCache::Dep::Conflicts ||
-	   D->Type == pkgCache::Dep::DpkgBreaks ||
-	   D->Type == pkgCache::Dep::Obsoletes) &&
+      if (D.IsNegative() == true &&
 	  (Version *)Pkg.CurrentVer() != *I)
 	 continue;
       
@@ -647,9 +643,7 @@ bool pkgOrderList::DepUnPackCrit(DepIterator D)
       {
 	 /* Forward critical dependencies MUST be correct before the 
 	    package can be unpacked. */
-	 if (D->Type != pkgCache::Dep::Conflicts &&
-	     D->Type != pkgCache::Dep::DpkgBreaks &&
-	     D->Type != pkgCache::Dep::Obsoletes &&
+	 if (D.IsNegative() == false &&
 	     D->Type != pkgCache::Dep::PreDepends)
 	    continue;
 	 	 	 	 
@@ -1077,9 +1071,7 @@ bool pkgOrderList::CheckDep(DepIterator D)
       
       /* Conflicts requires that all versions are not present, depends
          just needs one */
-      if (D->Type != pkgCache::Dep::Conflicts && 
-	  D->Type != pkgCache::Dep::DpkgBreaks && 
-	  D->Type != pkgCache::Dep::Obsoletes)
+      if (D.IsNegative() == false)
       {
 	 /* Try to find something that does not have the after flag set
 	    if at all possible */

apt-pkg/pkgcache.cc

@@ -521,9 +521,7 @@ std::string pkgCache::PkgIterator::FullName(bool const &Pretty) const
    conflicts (including dpkg's Breaks fields). */
 bool pkgCache::DepIterator::IsCritical() const
 {
-   if (S->Type == pkgCache::Dep::Conflicts ||
-       S->Type == pkgCache::Dep::DpkgBreaks ||
-       S->Type == pkgCache::Dep::Obsoletes ||
+   if (IsNegative() == true ||
        S->Type == pkgCache::Dep::Depends ||
        S->Type == pkgCache::Dep::PreDepends)
       return true;
@@ -618,9 +616,7 @@ pkgCache::Version **pkgCache::DepIterator::AllTargets() const
 	 if (Owner->VS->CheckDep(I.VerStr(),S->CompareOp,TargetVer()) == false)
 	    continue;
 
-	 if ((S->Type == pkgCache::Dep::Conflicts ||
-	      S->Type == pkgCache::Dep::DpkgBreaks ||
-	      S->Type == pkgCache::Dep::Obsoletes) &&
+	 if (IsNegative() == true &&
 	     ParentPkg() == I.ParentPkg())
 	    continue;
 	 
@@ -635,9 +631,7 @@ pkgCache::Version **pkgCache::DepIterator::AllTargets() const
 	 if (Owner->VS->CheckDep(I.ProvideVersion(),S->CompareOp,TargetVer()) == false)
 	    continue;
 	 
-	 if ((S->Type == pkgCache::Dep::Conflicts ||
-	      S->Type == pkgCache::Dep::DpkgBreaks ||
-	      S->Type == pkgCache::Dep::Obsoletes) &&
+	 if (IsNegative() == true &&
 	     ParentPkg() == I.OwnerPkg())
 	    continue;
 	 

cmdline/apt-cache.cc

@@ -121,9 +121,7 @@ bool ShowUnMet(pkgCache::VerIterator const &V, bool const &Important)
 		  continue;
 
 	    // Skip conflicts and replaces
-	    if (End->Type == pkgCache::Dep::DpkgBreaks ||
-		End->Type == pkgCache::Dep::Replaces ||
-		End->Type == pkgCache::Dep::Conflicts)
+	    if (End.IsNegative() == true)
 	       continue;
 
 	    // Verify the or group
@@ -848,10 +846,7 @@ bool XVcg(CommandLine &CmdL)
 	       {
 		  /* If a conflicts does not meet anything in the database
 		     then show the relation but do not recurse */
-		  if (Hit == false && 
-		      (D->Type == pkgCache::Dep::Conflicts ||
-		       D->Type == pkgCache::Dep::DpkgBreaks ||
-		       D->Type == pkgCache::Dep::Obsoletes))
+		  if (Hit == false && D.IsNegative() == true)
 		  {
 		     if (Show[D.TargetPkg()->ID] == None && 
 			 Show[D.TargetPkg()->ID] != ToShow)
@@ -1060,9 +1055,7 @@ bool Dotty(CommandLine &CmdL)
 	       {
 		  /* If a conflicts does not meet anything in the database
 		     then show the relation but do not recurse */
-		  if (Hit == false && 
-		      (D->Type == pkgCache::Dep::Conflicts ||
-		       D->Type == pkgCache::Dep::Obsoletes))
+		  if (Hit == false && D.IsNegative() == true)
 		  {
 		     if (Show[D.TargetPkg()->ID] == None && 
 			 Show[D.TargetPkg()->ID] != ToShow)
@@ -1082,6 +1075,7 @@ bool Dotty(CommandLine &CmdL)
 	       {
 		  case pkgCache::Dep::Conflicts:
 		  case pkgCache::Dep::Obsoletes:
+		  case pkgCache::Dep::DpkgBreaks:
 		  printf("[color=springgreen];\n");
 		  break;