зеркало из https://github.com/microsoft/clang-1.git
103 строки
2.7 KiB
C++
103 строки
2.7 KiB
C++
//=- AnalysisBasedWarnings.h - Sema warnings based on libAnalysis -*- C++ -*-=//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file defines AnalysisBasedWarnings, a worker object used by Sema
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// that issues warnings based on dataflow-analysis.
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_CLANG_SEMA_ANALYSIS_WARNINGS_H
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#define LLVM_CLANG_SEMA_ANALYSIS_WARNINGS_H
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#include "llvm/ADT/DenseMap.h"
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namespace clang {
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class BlockExpr;
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class Decl;
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class FunctionDecl;
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class ObjCMethodDecl;
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class QualType;
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class Sema;
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namespace sema {
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class FunctionScopeInfo;
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}
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namespace sema {
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class AnalysisBasedWarnings {
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public:
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class Policy {
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friend class AnalysisBasedWarnings;
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// The warnings to run.
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unsigned enableCheckFallThrough : 1;
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unsigned enableCheckUnreachable : 1;
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unsigned enableThreadSafetyAnalysis : 1;
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public:
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Policy();
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void disableCheckFallThrough() { enableCheckFallThrough = 0; }
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};
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private:
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Sema &S;
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Policy DefaultPolicy;
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enum VisitFlag { NotVisited = 0, Visited = 1, Pending = 2 };
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llvm::DenseMap<const FunctionDecl*, VisitFlag> VisitedFD;
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/// \name Statistics
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/// @{
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/// \brief Number of function CFGs built and analyzed.
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unsigned NumFunctionsAnalyzed;
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/// \brief Number of functions for which the CFG could not be successfully
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/// built.
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unsigned NumFunctionsWithBadCFGs;
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/// \brief Total number of blocks across all CFGs.
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unsigned NumCFGBlocks;
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/// \brief Largest number of CFG blocks for a single function analyzed.
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unsigned MaxCFGBlocksPerFunction;
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/// \brief Total number of CFGs with variables analyzed for uninitialized
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/// uses.
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unsigned NumUninitAnalysisFunctions;
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/// \brief Total number of variables analyzed for uninitialized uses.
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unsigned NumUninitAnalysisVariables;
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/// \brief Max number of variables analyzed for uninitialized uses in a single
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/// function.
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unsigned MaxUninitAnalysisVariablesPerFunction;
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/// \brief Total number of block visits during uninitialized use analysis.
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unsigned NumUninitAnalysisBlockVisits;
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/// \brief Max number of block visits during uninitialized use analysis of
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/// a single function.
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unsigned MaxUninitAnalysisBlockVisitsPerFunction;
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/// @}
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public:
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AnalysisBasedWarnings(Sema &s);
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void IssueWarnings(Policy P, FunctionScopeInfo *fscope,
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const Decl *D, const BlockExpr *blkExpr);
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Policy getDefaultPolicy() { return DefaultPolicy; }
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void PrintStats() const;
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};
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}} // end namespace clang::sema
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#endif
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