cppcheck/lib/programmemory.h

83 lines
2.1 KiB
C++

#ifndef GUARD_PROGRAMMEMORY_H
#define GUARD_PROGRAMMEMORY_H
#include "config.h"
#include "utils.h"
#include "valueflow.h"
#include "mathlib.h"
#include <map>
#include <unordered_map>
struct ProgramMemory {
using Map = std::unordered_map<nonneg int, ValueFlow::Value>;
Map values;
void setValue(nonneg int varid, const ValueFlow::Value &value);
bool getIntValue(nonneg int varid, MathLib::bigint* result) const;
void setIntValue(nonneg int varid, MathLib::bigint value);
void setUnknown(nonneg int varid);
bool getTokValue(nonneg int varid, const Token** result) const;
bool hasValue(nonneg int varid);
void swap(ProgramMemory &pm);
void clear();
bool empty() const;
void replace(const ProgramMemory &pm);
void insert(const ProgramMemory &pm);
};
struct ProgramMemoryState {
ProgramMemory state;
std::map<nonneg int, const Token*> origins;
void insert(const ProgramMemory &pm, const Token* origin = nullptr);
void replace(const ProgramMemory &pm, const Token* origin = nullptr);
void addState(const Token* tok, const ProgramMemory::Map& vars);
void assume(const Token* tok, bool b);
void removeModifiedVars(const Token* tok);
ProgramMemory get(const Token *tok, const ProgramMemory::Map& vars) const;
};
void execute(const Token *expr,
ProgramMemory * const programMemory,
MathLib::bigint *result,
bool *error);
/**
* Is condition always false when variable has given value?
* \param condition top ast token in condition
* \param programMemory program memory
*/
bool conditionIsFalse(const Token *condition, const ProgramMemory &programMemory);
/**
* Is condition always true when variable has given value?
* \param condition top ast token in condition
* \param programMemory program memory
*/
bool conditionIsTrue(const Token *condition, const ProgramMemory &programMemory);
/**
* Get program memory by looking backwards from given token.
*/
ProgramMemory getProgramMemory(const Token *tok, nonneg int varid, const ValueFlow::Value &value);
ProgramMemory getProgramMemory(const Token *tok, const ProgramMemory::Map& vars);
#endif