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//== PseudoConstantAnalysis.h - Find Pseudo-constants in the AST -*- C++ -*-==//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file tracks the usage of variables in a Decl body to see if they are
// never written to, implying that they constant. This is useful in static
// analysis to see if a developer might have intended a variable to be const.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_CLANG_ANALYSIS_PSEUDOCONSTANTANALYSIS
#define LLVM_CLANG_ANALYSIS_PSEUDOCONSTANTANALYSIS
#include "clang/AST/Stmt.h"
namespace clang {
class PseudoConstantAnalysis {
public:
PseudoConstantAnalysis(const Stmt *DeclBody);
~PseudoConstantAnalysis();
bool isPseudoConstant(const VarDecl *VD);
bool wasReferenced(const VarDecl *VD);
private:
void RunAnalysis();
inline static const Decl *getDecl(const Expr *E);
// for storing the result of analyzed ValueDecls
void *NonConstantsImpl;
void *UsedVarsImpl;
const Stmt *DeclBody;
bool Analyzed;
};
}
#endif
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