mirror of
https://github.com/nlohmann/json.git
synced 2024-08-23 21:42:29 +02:00
125 lines
3.4 KiB
C++
125 lines
3.4 KiB
C++
//===- FuzzerDictionary.h - Internal header for the Fuzzer ------*- C++ -* ===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
// fuzzer::Dictionary
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef LLVM_FUZZER_DICTIONARY_H
|
|
#define LLVM_FUZZER_DICTIONARY_H
|
|
|
|
#include "FuzzerDefs.h"
|
|
#include "FuzzerIO.h"
|
|
#include "FuzzerUtil.h"
|
|
#include <algorithm>
|
|
#include <limits>
|
|
|
|
namespace fuzzer {
|
|
// A simple POD sized array of bytes.
|
|
template <size_t kMaxSize> class FixedWord {
|
|
public:
|
|
FixedWord() {}
|
|
FixedWord(const uint8_t *B, uint8_t S) { Set(B, S); }
|
|
|
|
void Set(const uint8_t *B, uint8_t S) {
|
|
assert(S <= kMaxSize);
|
|
memcpy(Data, B, S);
|
|
Size = S;
|
|
}
|
|
|
|
bool operator==(const FixedWord<kMaxSize> &w) const {
|
|
return Size == w.Size && 0 == memcmp(Data, w.Data, Size);
|
|
}
|
|
|
|
bool operator<(const FixedWord<kMaxSize> &w) const {
|
|
if (Size != w.Size)
|
|
return Size < w.Size;
|
|
return memcmp(Data, w.Data, Size) < 0;
|
|
}
|
|
|
|
static size_t GetMaxSize() { return kMaxSize; }
|
|
const uint8_t *data() const { return Data; }
|
|
uint8_t size() const { return Size; }
|
|
|
|
private:
|
|
uint8_t Size = 0;
|
|
uint8_t Data[kMaxSize];
|
|
};
|
|
|
|
typedef FixedWord<27> Word; // 28 bytes.
|
|
|
|
class DictionaryEntry {
|
|
public:
|
|
DictionaryEntry() {}
|
|
DictionaryEntry(Word W) : W(W) {}
|
|
DictionaryEntry(Word W, size_t PositionHint) : W(W), PositionHint(PositionHint) {}
|
|
const Word &GetW() const { return W; }
|
|
|
|
bool HasPositionHint() const { return PositionHint != std::numeric_limits<size_t>::max(); }
|
|
size_t GetPositionHint() const {
|
|
assert(HasPositionHint());
|
|
return PositionHint;
|
|
}
|
|
void IncUseCount() { UseCount++; }
|
|
void IncSuccessCount() { SuccessCount++; }
|
|
size_t GetUseCount() const { return UseCount; }
|
|
size_t GetSuccessCount() const {return SuccessCount; }
|
|
|
|
void Print(const char *PrintAfter = "\n") {
|
|
PrintASCII(W.data(), W.size());
|
|
if (HasPositionHint())
|
|
Printf("@%zd", GetPositionHint());
|
|
Printf("%s", PrintAfter);
|
|
}
|
|
|
|
private:
|
|
Word W;
|
|
size_t PositionHint = std::numeric_limits<size_t>::max();
|
|
size_t UseCount = 0;
|
|
size_t SuccessCount = 0;
|
|
};
|
|
|
|
class Dictionary {
|
|
public:
|
|
static const size_t kMaxDictSize = 1 << 14;
|
|
|
|
bool ContainsWord(const Word &W) const {
|
|
return std::any_of(begin(), end(), [&](const DictionaryEntry &DE) {
|
|
return DE.GetW() == W;
|
|
});
|
|
}
|
|
const DictionaryEntry *begin() const { return &DE[0]; }
|
|
const DictionaryEntry *end() const { return begin() + Size; }
|
|
DictionaryEntry & operator[] (size_t Idx) {
|
|
assert(Idx < Size);
|
|
return DE[Idx];
|
|
}
|
|
void push_back(DictionaryEntry DE) {
|
|
if (Size < kMaxDictSize)
|
|
this->DE[Size++] = DE;
|
|
}
|
|
void clear() { Size = 0; }
|
|
bool empty() const { return Size == 0; }
|
|
size_t size() const { return Size; }
|
|
|
|
private:
|
|
DictionaryEntry DE[kMaxDictSize];
|
|
size_t Size = 0;
|
|
};
|
|
|
|
// Parses one dictionary entry.
|
|
// If successfull, write the enty to Unit and returns true,
|
|
// otherwise returns false.
|
|
bool ParseOneDictionaryEntry(const std::string &Str, Unit *U);
|
|
// Parses the dictionary file, fills Units, returns true iff all lines
|
|
// were parsed succesfully.
|
|
bool ParseDictionaryFile(const std::string &Text, std::vector<Unit> *Units);
|
|
|
|
} // namespace fuzzer
|
|
|
|
#endif // LLVM_FUZZER_DICTIONARY_H
|