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//== CheckerVisitor.h - Abstract visitor for checkers ------------*- 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 CheckerVisitor.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_CLANG_ANALYSIS_CHECKERVISITOR
#define LLVM_CLANG_ANALYSIS_CHECKERVISITOR
#include "clang/Checker/PathSensitive/Checker.h"
namespace clang {
//===----------------------------------------------------------------------===//
// Checker visitor interface. Used by subclasses of Checker to specify their
// own checker visitor logic.
//===----------------------------------------------------------------------===//
/// CheckerVisitor - This class implements a simple visitor for Stmt subclasses.
/// Since Expr derives from Stmt, this also includes support for visiting Exprs.
template<typename ImplClass>
class CheckerVisitor : public Checker {
public:
virtual void _PreVisit(CheckerContext &C, const Stmt *S) {
PreVisit(C, S);
}
virtual void _PostVisit(CheckerContext &C, const Stmt *S) {
PostVisit(C, S);
}
void PreVisit(CheckerContext &C, const Stmt *S) {
switch (S->getStmtClass()) {
default:
assert(false && "Unsupport statement.");
return;
case Stmt::CompoundAssignOperatorClass:
static_cast<ImplClass*>(this)->PreVisitBinaryOperator(C,
static_cast<const BinaryOperator*>(S));
break;
#define PREVISIT(NAME, FALLBACK) \
case Stmt::NAME ## Class:\
static_cast<ImplClass*>(this)->PreVisit ## NAME(C,static_cast<const NAME*>(S));\
break;
#include "clang/Checker/PathSensitive/CheckerVisitor.def"
}
}
void PostVisit(CheckerContext &C, const Stmt *S) {
switch (S->getStmtClass()) {
default:
assert(false && "Unsupport statement.");
return;
case Stmt::CompoundAssignOperatorClass:
static_cast<ImplClass*>(this)->PostVisitBinaryOperator(C,
static_cast<const BinaryOperator*>(S));
break;
#define POSTVISIT(NAME, FALLBACK) \
case Stmt::NAME ## Class:\
static_cast<ImplClass*>(this)->\
PostVisit ## NAME(C,static_cast<const NAME*>(S));\
break;
#include "clang/Checker/PathSensitive/CheckerVisitor.def"
}
}
void PreVisitGenericCall(CheckerContext &C, const CallExpr *CE) {
static_cast<ImplClass*>(this)->PreVisitStmt(C, CE);
}
void PostVisitGenericCall(CheckerContext &C, const CallExpr *CE) {
static_cast<ImplClass*>(this)->PostVisitStmt(C, CE);
}
void PreVisitStmt(CheckerContext &C, const Stmt *S) {
*C.respondsToCallback = false;
}
void PostVisitStmt(CheckerContext &C, const Stmt *S) {
*C.respondsToCallback = false;
}
void PreVisitCastExpr(CheckerContext &C, const CastExpr *E) {
static_cast<ImplClass*>(this)->PreVisitStmt(C, E);
}
#define PREVISIT(NAME, FALLBACK) \
void PreVisit ## NAME(CheckerContext &C, const NAME* S) {\
static_cast<ImplClass*>(this)->PreVisit ## FALLBACK(C, S);\
}
#define POSTVISIT(NAME, FALLBACK) \
void PostVisit ## NAME(CheckerContext &C, const NAME* S) {\
static_cast<ImplClass*>(this)->PostVisit ## FALLBACK(C, S);\
}
#include "clang/Checker/PathSensitive/CheckerVisitor.def"
};
} // end clang namespace
#endif
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