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//==- GRBlockCounter.h - ADT for counting block visits -------------*- 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 GRBlockCounter, an abstract data type used to count
// the number of times a given block has been visited along a path
// analyzed by GRCoreEngine.
//
//===----------------------------------------------------------------------===//
#include "clang/Analysis/PathSensitive/GRBlockCounter.h"
#include "llvm/ADT/ImmutableMap.h"
using namespace clang;
typedef llvm::ImmutableMap<unsigned,unsigned> CountMap;
static inline CountMap GetMap(void* D) {
return CountMap(static_cast<CountMap::TreeTy*>(D));
}
static inline CountMap::Factory& GetFactory(void* F) {
return *static_cast<CountMap::Factory*>(F);
}
unsigned GRBlockCounter::getNumVisited(unsigned BlockID) const {
CountMap M = GetMap(Data);
CountMap::data_type* T = M.lookup(BlockID);
return T ? *T : 0;
}
GRBlockCounter::Factory::Factory(llvm::BumpPtrAllocator& Alloc) {
F = new CountMap::Factory(Alloc);
}
GRBlockCounter::Factory::~Factory() {
delete static_cast<CountMap::Factory*>(F);
}
GRBlockCounter
GRBlockCounter::Factory::IncrementCount(GRBlockCounter BC, unsigned BlockID) {
return GRBlockCounter(GetFactory(F).Add(GetMap(BC.Data), BlockID,
BC.getNumVisited(BlockID)+1).getRoot());
}
GRBlockCounter
GRBlockCounter::Factory::GetEmptyCounter() {
return GRBlockCounter(GetFactory(F).GetEmptyMap().getRoot());
}
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