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//=- 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_ANALYSISBASEDWARNINGS_H
#define LLVM_CLANG_SEMA_ANALYSISBASEDWARNINGS_H
#include "llvm/ADT/DenseMap.h"
namespace clang {
class BlockExpr;
class Decl;
class FunctionDecl;
class ObjCMethodDecl;
class QualType;
class Sema;
namespace sema {
class FunctionScopeInfo;
}
namespace sema {
class AnalysisBasedWarnings {
public:
class Policy {
friend class AnalysisBasedWarnings;
// The warnings to run.
unsigned enableCheckFallThrough : 1;
unsigned enableCheckUnreachable : 1;
unsigned enableThreadSafetyAnalysis : 1;
unsigned enableConsumedAnalysis : 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;
/// \name Statistics
/// @{
/// Number of function CFGs built and analyzed.
unsigned NumFunctionsAnalyzed;
/// Number of functions for which the CFG could not be successfully
/// built.
unsigned NumFunctionsWithBadCFGs;
/// Total number of blocks across all CFGs.
unsigned NumCFGBlocks;
/// Largest number of CFG blocks for a single function analyzed.
unsigned MaxCFGBlocksPerFunction;
/// Total number of CFGs with variables analyzed for uninitialized
/// uses.
unsigned NumUninitAnalysisFunctions;
/// Total number of variables analyzed for uninitialized uses.
unsigned NumUninitAnalysisVariables;
/// Max number of variables analyzed for uninitialized uses in a single
/// function.
unsigned MaxUninitAnalysisVariablesPerFunction;
/// Total number of block visits during uninitialized use analysis.
unsigned NumUninitAnalysisBlockVisits;
/// Max number of block visits during uninitialized use analysis of
/// a single function.
unsigned MaxUninitAnalysisBlockVisitsPerFunction;
/// @}
public:
AnalysisBasedWarnings(Sema &s);
void IssueWarnings(Policy P, FunctionScopeInfo *fscope,
const Decl *D, const BlockExpr *blkExpr);
Policy getDefaultPolicy() { return DefaultPolicy; }
void PrintStats() const;
};
}} // end namespace clang::sema
#endif
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