PathDiagnosticLocation: ranges for terminators now only include the first

character instead of the entire range for the IfStmt, ForStmt, etc. We may
gradually refine these ranges later, but basically terminator ranges just refer
to the first keyword.

llvm-svn: 69812

clang/lib/Analysis/PathDiagnostic.cpp

@@ -166,8 +166,29 @@ SourceRange PathDiagnosticLocation::asRange() const {
     case SingleLocK:
     case RangeK:
       break;
-    case StmtK:
+    case StmtK: {
+      const Stmt *S = asStmt();
+      switch (S->getStmtClass()) {
+        default:
+          break;
+          // FIXME: Provide better range information for different
+          //  terminators.
+        case Stmt::IfStmtClass:
+        case Stmt::WhileStmtClass:
+        case Stmt::DoStmtClass:
+        case Stmt::ForStmtClass:
+        case Stmt::ChooseExprClass:
+        case Stmt::IndirectGotoStmtClass:
+        case Stmt::SwitchStmtClass:
+        case Stmt::ConditionalOperatorClass:
+        case Stmt::ObjCForCollectionStmtClass: {
+          SourceLocation L = S->getLocStart();
+          return SourceRange(L, L);
+        }
+      }
+      
       return S->getSourceRange();
+    }
     case DeclK:
       if (const ObjCMethodDecl *MD = dyn_cast<ObjCMethodDecl>(D))
         return MD->getSourceRange();