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//===----------------------------------------------------------------------===//
//
// Copyright (c) 2012 The University of Utah
// All rights reserved.
//
// This file is distributed under the University of Illinois Open Source
// License. See the file COPYING for details.
//
//===----------------------------------------------------------------------===//
#ifndef REPLACE_CALL_EXPR_H
#define REPLACE_CALL_EXPR_H
#include <string>
#include <vector>
#include <utility>
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/DenseMap.h"
#include "Transformation.h"
namespace clang {
class DeclGroupRef;
class ASTContext;
class FunctionDecl;
class CallExpr;
class DeclRefExpr;
class ReturnStmt;
class Expr;
class ParmVarDecl;
}
class ReplaceCallExprVisitor;
class ReplaceCallExpr : public Transformation {
friend class ReplaceCallExprVisitor;
public:
ReplaceCallExpr(const char *TransName, const char *Desc)
: Transformation(TransName, Desc),
CollectionVisitor(NULL),
TheCallExpr(NULL),
TheReturnStmt(NULL),
CurrentFD(NULL)
{ }
~ReplaceCallExpr(void);
private:
typedef llvm::SmallVector<clang::ReturnStmt *, 5> ReturnStmtsVector;
typedef llvm::SmallVector<const clang::DeclRefExpr *, 5> ParmRefsVector;
typedef llvm::SmallVector<unsigned int, 10> ParameterPosVector;
virtual void Initialize(clang::ASTContext &context);
virtual void HandleTranslationUnit(clang::ASTContext &Ctx);
void addOneReturnStmt(clang::ReturnStmt *RS);
void addOneParmRef(clang::ReturnStmt *RS, const clang::DeclRefExpr *DE);
void replaceCallExpr(void);
void getNewParmRefStr(const clang::DeclRefExpr *DE,
std::string &ParmRefStr);
void replaceParmRefs(std::string &RetStr, const clang::Expr *RetE,
llvm::DenseMap<const clang::DeclRefExpr *, std::string> &ParmRefToStrMap);
void insertParmRef(
std::vector< std::pair<const clang::DeclRefExpr *, int> > &SortedParmRefs,
const clang::DeclRefExpr *ParmRef, int Off);
void sortParmRefsByOffs(const char *StartBuf,
llvm::DenseMap<const clang::DeclRefExpr *, std::string> &ParmRefToStrMap,
std::vector<std::pair<const clang::DeclRefExpr *, int> > &SortedParmRefs);
void doAnalysis(void);
void getParmPosVector(ParameterPosVector &PosVector,
clang::ReturnStmt *RS, clang::CallExpr *CE);
bool hasBadEffect(const ParameterPosVector &PosVector,
clang::ReturnStmt *RS, clang::CallExpr *CE);
bool hasUnmatchedParmArg(const ParameterPosVector &PosVector,
clang::CallExpr *CE);
ReplaceCallExprVisitor *CollectionVisitor;
llvm::DenseMap<clang::FunctionDecl *, ReturnStmtsVector *> FuncToReturnStmts;
llvm::DenseMap<clang::ReturnStmt *, ParmRefsVector *> ReturnStmtToParmRefs;
llvm::SmallVector<clang::CallExpr *, 10> AllCallExprs;
clang::CallExpr *TheCallExpr;
clang::ReturnStmt *TheReturnStmt;
clang::FunctionDecl *CurrentFD;
// Unimplemented
ReplaceCallExpr(void);
ReplaceCallExpr(const ReplaceCallExpr &);
void operator=(const ReplaceCallExpr &);
};
#endif
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