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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_ANALYSIS_WARNINGS_H
#define LLVM_CLANG_SEMA_ANALYSIS_WARNINGS_H
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/DenseMap.h"
namespace clang {
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;
public:
AnalysisBasedWarnings(Sema &s);
Policy getDefaultPolicy() { return DefaultPolicy; }
void IssueWarnings(Policy P, const Decl *D, QualType BlockTy = QualType());
};
}} // end namespace clang::sema
#endif