1 files changed, 64 insertions, 0 deletions
diff --git a/include/clang/Sema/AnalysisBasedWarnings.h b/include/clang/Sema/AnalysisBasedWarnings.h
new file mode 100644
index 0000000..0a6656e
--- /dev/null
+++ b/include/clang/Sema/AnalysisBasedWarnings.h
@@ -0,0 +1,64 @@
+//=- AnalysisBasedWarnings.h - Sema warnings based on libAnalysis -*- C++ -*-=//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file defines AnalysisBasedWarnings, a worker object used by Sema
+// that issues warnings based on dataflow-analysis.
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_CLANG_SEMA_ANALYSIS_WARNINGS_H
+#define LLVM_CLANG_SEMA_ANALYSIS_WARNINGS_H
+
+#include "llvm/ADT/SmallVector.h"
+#include "llvm/ADT/DenseMap.h"
+
+namespace clang {
+
+class BlockExpr;
+class Decl;
+class FunctionDecl;
+class ObjCMethodDecl;
+class QualType;
+class Sema;
+
+namespace sema {
+
+class AnalysisBasedWarnings {
+public:
+  class Policy {
+    friend class AnalysisBasedWarnings;
+    // The warnings to run.
+    unsigned enableCheckFallThrough : 1;
+    unsigned enableCheckUnreachable : 1;
+  public:
+    Policy();
+    void disableCheckFallThrough() { enableCheckFallThrough = 0; }
+  };
+
+private:
+  Sema &S;
+  Policy DefaultPolicy;
+
+  enum VisitFlag { NotVisited = 0, Visited = 1, Pending = 2 };
+  llvm::DenseMap<const FunctionDecl*, VisitFlag> VisitedFD;
+
+  void IssueWarnings(Policy P, const Decl *D, QualType BlockTy);
+
+public:
+  AnalysisBasedWarnings(Sema &s);
+
+  Policy getDefaultPolicy() { return DefaultPolicy; }
+
+  void IssueWarnings(Policy P, const BlockExpr *E);
+  void IssueWarnings(Policy P, const FunctionDecl *D);
+  void IssueWarnings(Policy P, const ObjCMethodDecl *D);
+};
+
+}} // end namespace clang::sema
+
+#endif