[analyzer] CheckerContext: Make the Preprocessor available

Summary:
This patch hooks the `Preprocessor` trough `BugReporter` to the
`CheckerContext` so the checkers could look for macro definitions.

Reviewed By: NoQ

Differential Revision: https://reviews.llvm.org/D69731

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

@@ -17,12 +17,13 @@
 #include "clang/Analysis/PathDiagnostic.h"
 #include "clang/Basic/LLVM.h"
 #include "clang/Basic/SourceLocation.h"
+#include "clang/Lex/Preprocessor.h"
 #include "clang/StaticAnalyzer/Core/BugReporter/BugReporterVisitors.h"
 #include "clang/StaticAnalyzer/Core/CheckerManager.h"
+#include "clang/StaticAnalyzer/Core/PathSensitive/ExplodedGraph.h"
 #include "clang/StaticAnalyzer/Core/PathSensitive/ProgramState.h"
 #include "clang/StaticAnalyzer/Core/PathSensitive/SVals.h"
 #include "clang/StaticAnalyzer/Core/PathSensitive/SymExpr.h"
-#include "clang/StaticAnalyzer/Core/PathSensitive/ExplodedGraph.h"
 #include "llvm/ADT/ArrayRef.h"
 #include "llvm/ADT/DenseSet.h"
 #include "llvm/ADT/FoldingSet.h"
@@ -566,6 +567,7 @@ public:
   virtual ASTContext &getASTContext() = 0;
   virtual SourceManager &getSourceManager() = 0;
   virtual AnalyzerOptions &getAnalyzerOptions() = 0;
+  virtual Preprocessor &getPreprocessor() = 0;
 };
 
 /// BugReporter is a utility class for generating PathDiagnostics for analysis.
@@ -608,6 +610,8 @@ public:
 
   const AnalyzerOptions &getAnalyzerOptions() { return D.getAnalyzerOptions(); }
 
+  Preprocessor &getPreprocessor() { return D.getPreprocessor(); }
+
   /// Add the given report to the set of reports tracked by BugReporter.
   ///
   /// The reports are usually generated by the checkers. Further, they are

clang/include/clang/StaticAnalyzer/Core/PathSensitive/AnalysisManager.h

@@ -16,6 +16,7 @@
 
 #include "clang/Analysis/AnalysisDeclContext.h"
 #include "clang/Analysis/PathDiagnostic.h"
+#include "clang/Lex/Preprocessor.h"
 #include "clang/StaticAnalyzer/Core/AnalyzerOptions.h"
 #include "clang/StaticAnalyzer/Core/BugReporter/BugReporter.h"
 #include "clang/StaticAnalyzer/Core/PathDiagnosticConsumers.h"
@@ -32,6 +33,7 @@ class AnalysisManager : public BugReporterData {
   AnalysisDeclContextManager AnaCtxMgr;
 
   ASTContext &Ctx;
+  Preprocessor &PP;
   const LangOptions &LangOpts;
   PathDiagnosticConsumers PathConsumers;
 
@@ -44,7 +46,7 @@ class AnalysisManager : public BugReporterData {
 public:
   AnalyzerOptions &options;
 
-  AnalysisManager(ASTContext &ctx,
+  AnalysisManager(ASTContext &ctx, Preprocessor &PP,
                   const PathDiagnosticConsumers &Consumers,
                   StoreManagerCreator storemgr,
                   ConstraintManagerCreator constraintmgr,
@@ -61,6 +63,8 @@ public:
     return AnaCtxMgr;
   }
 
+  Preprocessor &getPreprocessor() override { return PP; }
+
   StoreManagerCreator getStoreManagerCreator() {
     return CreateStoreMgr;
   }

clang/include/clang/StaticAnalyzer/Core/PathSensitive/CheckerContext.h

@@ -107,6 +107,8 @@ public:
     return getBugReporter().getSourceManager();
   }
 
+  Preprocessor &getPreprocessor() { return getBugReporter().getPreprocessor(); }
+
   SValBuilder &getSValBuilder() {
     return Eng.getSValBuilder();
   }

clang/lib/StaticAnalyzer/Core/AnalysisManager.cpp

@@ -13,7 +13,7 @@ using namespace ento;
 
 void AnalysisManager::anchor() { }
 
-AnalysisManager::AnalysisManager(ASTContext &ASTCtx,
+AnalysisManager::AnalysisManager(ASTContext &ASTCtx, Preprocessor &PP,
                                  const PathDiagnosticConsumers &PDC,
                                  StoreManagerCreator storemgr,
                                  ConstraintManagerCreator constraintmgr,
@@ -38,7 +38,7 @@ AnalysisManager::AnalysisManager(ASTContext &ASTCtx,
           Options.ShouldElideConstructors,
           /*addVirtualBaseBranches=*/true,
           injector),
-      Ctx(ASTCtx), LangOpts(ASTCtx.getLangOpts()),
+      Ctx(ASTCtx), PP(PP), LangOpts(ASTCtx.getLangOpts()),
       PathConsumers(PDC), CreateStoreMgr(storemgr),
       CreateConstraintMgr(constraintmgr), CheckerMgr(checkerMgr),
       options(Options) {

clang/lib/StaticAnalyzer/Frontend/AnalysisConsumer.cpp

@@ -193,7 +193,7 @@ class AnalysisConsumer : public AnalysisASTConsumer,
 
 public:
   ASTContext *Ctx;
-  const Preprocessor &PP;
+  Preprocessor &PP;
   const std::string OutDir;
   AnalyzerOptionsRef Opts;
   ArrayRef<std::string> Plugins;
@@ -336,8 +336,8 @@ public:
     checkerMgr = createCheckerManager(
         *Ctx, *Opts, Plugins, CheckerRegistrationFns, PP.getDiagnostics());
 
-    Mgr = std::make_unique<AnalysisManager>(*Ctx, PathConsumers, CreateStoreMgr,
-                                            CreateConstraintMgr,
+    Mgr = std::make_unique<AnalysisManager>(*Ctx, PP, PathConsumers,
+                                            CreateStoreMgr, CreateConstraintMgr,
                                             checkerMgr.get(), *Opts, Injector);
   }
 

clang/unittests/StaticAnalyzer/Reusables.h

@@ -58,7 +58,7 @@ public:
   ExprEngineConsumer(CompilerInstance &C)
       : C(C), ChkMgr(C.getASTContext(), *C.getAnalyzerOpts()), CTU(C),
         Consumers(),
-        AMgr(C.getASTContext(), Consumers,
+        AMgr(C.getASTContext(), C.getPreprocessor(), Consumers,
              CreateRegionStoreManager, CreateRangeConstraintManager, &ChkMgr,
              *C.getAnalyzerOpts()),
         VisitedCallees(), FS(),