[analyzer] Refactor PathDiagnosticLocation: Remove SourceRange member from PathDiagnosticLocation - FullSourceLoc Loc and PathDiagnosticRange Range are sufficient.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@140206 91177308-0d34-0410-b5e6-96231b3b80d8

include/clang/StaticAnalyzer/Core/BugReporter/PathDiagnostic.h

@@ -95,7 +95,6 @@ typedef llvm::PointerUnion<const LocationContext*, AnalysisContext*>
 class PathDiagnosticLocation {
 private:
   enum Kind { RangeK, SingleLocK, StmtK, DeclK } K;
-  SourceRange R;
   const Stmt *S;
   const Decl *D;
   const SourceManager *SM;
@@ -104,14 +103,16 @@ private:
 
   PathDiagnosticLocation(SourceLocation L, const SourceManager &sm,
                          Kind kind)
-    : K(kind), R(L, L), S(0), D(0), SM(&sm),
-      Loc(genLocation()), Range(genRange()) {
-  }
+    : K(kind), S(0), D(0), SM(&sm),
+      Loc(genLocation(L)), Range(genRange(L)) {}
 
   FullSourceLoc
-    genLocation(LocationOrAnalysisContext LAC = (AnalysisContext*)0) const;
+    genLocation(SourceLocation L = SourceLocation(),
+                LocationOrAnalysisContext LAC = (AnalysisContext*)0) const;
+
   PathDiagnosticRange
-    genRange(LocationOrAnalysisContext LAC = (AnalysisContext*)0) const;
+    genRange(SourceLocation L = SourceLocation(),
+             LocationOrAnalysisContext LAC = (AnalysisContext*)0) const;
 
 public:
   /// Create an invalid location.
@@ -124,7 +125,8 @@ public:
                          const SourceManager &sm,
                          LocationOrAnalysisContext lac)
     : K(StmtK), S(s), D(0), SM(&sm),
-      Loc(genLocation(lac)), Range(genRange(lac)) {}
+      Loc(genLocation(SourceLocation(), lac)),
+      Range(genRange(SourceLocation(), lac)) {}
 
 
   /// Create a location corresponding to the given declaration.
@@ -192,7 +194,7 @@ public:
                                              const PathDiagnosticLocation &PDL);
 
   bool operator==(const PathDiagnosticLocation &X) const {
-    return K == X.K && R == X.R && S == X.S && D == X.D;
+    return K == X.K && Loc == X.Loc && Range == X.Range;
   }
 
   bool operator!=(const PathDiagnosticLocation &X) const {

lib/StaticAnalyzer/Core/PathDiagnostic.cpp

@@ -228,7 +228,7 @@ PathDiagnosticLocation PathDiagnosticLocation::createSingleLocation(
 }
 
 FullSourceLoc
-  PathDiagnosticLocation::genLocation(LocationOrAnalysisContext LAC) const {
+  PathDiagnosticLocation::genLocation(SourceLocation L, LocationOrAnalysisContext LAC) const {
   assert(isValid());
   // Note that we want a 'switch' here so that the compiler can warn us in
   // case we add more cases.
@@ -243,17 +243,17 @@ FullSourceLoc
       return FullSourceLoc(D->getLocation(), const_cast<SourceManager&>(*SM));
   }
 
-  return FullSourceLoc(R.getBegin(), const_cast<SourceManager&>(*SM));
+  return FullSourceLoc(L, const_cast<SourceManager&>(*SM));
 }
 
 PathDiagnosticRange
-  PathDiagnosticLocation::genRange(LocationOrAnalysisContext LAC) const {
+  PathDiagnosticLocation::genRange(SourceLocation L, LocationOrAnalysisContext LAC) const {
   assert(isValid());
   // Note that we want a 'switch' here so that the compiler can warn us in
   // case we add more cases.
   switch (K) {
     case SingleLocK:
-      return PathDiagnosticRange(R, true);
+      return PathDiagnosticRange(SourceRange(L,L), true);
     case RangeK:
       break;
     case StmtK: {
@@ -302,19 +302,16 @@ PathDiagnosticRange
       }
   }
 
-  return R;
+  return SourceRange(L,L);
 }
 
 void PathDiagnosticLocation::flatten() {
   if (K == StmtK) {
-    R = asRange();
     K = RangeK;
     S = 0;
     D = 0;
   }
   else if (K == DeclK) {
-    SourceLocation L = D->getLocation();
-    R = SourceRange(L, L);
     K = SingleLocK;
     S = 0;
     D = 0;