[PATCH] D103917: [analyzer] Extract InterestingLValueHandler

[Valeriy Savchenko via Phabricator via cfe-commits]

vsavchenko created this revision.
vsavchenko added reviewers: NoQ, xazax.hun, martong, steakhal, Szelethus, manas, RedDocMD.
Herald added subscribers: ASDenysPetrov, dkrupp, donat.nagy, mikhail.ramalho, a.sidorin, rnkovacs, szepet, baloghadamsoftware.
vsavchenko requested review of this revision.
Herald added a project: clang.
Herald added a subscriber: cfe-commits.

Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D103917

Files:
  clang/lib/StaticAnalyzer/Core/BugReporterVisitors.cpp


Index: clang/lib/StaticAnalyzer/Core/BugReporterVisitors.cpp
===================================================================
--- clang/lib/StaticAnalyzer/Core/BugReporterVisitors.cpp
+++ clang/lib/StaticAnalyzer/Core/BugReporterVisitors.cpp
@@ -2153,7 +2153,8 @@
   }
 };
 
-class DefaultExpressionHandler final : public ExpressionHandler {
+// TODO: extract it into more handlers
+class InterestingLValueHandler final : public ExpressionHandler {
 public:
   using ExpressionHandler::ExpressionHandler;
 
@@ -2225,11 +2226,25 @@
 
         if (auto KV = V.getAs<KnownSVal>())
           getParentTracker().track(*KV, R, Opts, SFC);
-
-        return Result;
       }
     }
 
+    return Result;
+  }
+};
+
+class DefaultExpressionHandler final : public ExpressionHandler {
+public:
+  using ExpressionHandler::ExpressionHandler;
+
+  Tracker::Result handle(const Expr *Inner, const ExplodedNode *InputNode,
+                         const ExplodedNode *LVNode,
+                         TrackingOptions Opts) override {
+    ProgramStateRef LVState = LVNode->getState();
+    const StackFrameContext *SFC = LVNode->getStackFrame();
+    PathSensitiveBugReport &Report = getParentTracker().getReport();
+    Tracker::Result Result;
+
     // If the expression is not an "lvalue expression", we can still
     // track the constraints on its contents.
     SVal V = LVState->getSValAsScalarOrLoc(Inner, LVNode->getLocationContext());
@@ -2336,6 +2351,7 @@
   addLowPriorityHandler<ControlDependencyHandler>();
   addLowPriorityHandler<NilReceiverHandler>();
   addLowPriorityHandler<ArrayIndexHandler>();
+  addLowPriorityHandler<InterestingLValueHandler>();
   addLowPriorityHandler<DefaultExpressionHandler>();
   addLowPriorityHandler<RValueHandler>();
   // Default store handlers.


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