x86/Operand.hpp

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/* Copyright 2022 - 2024 R. Thomas
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
#ifndef LIEF_ASM_X86_OPERAND_H
#define LIEF_ASM_X86_OPERAND_H
#include "LIEF/visibility.h"
#include "LIEF/iterators.hpp"
 
#include <memory>
#include <string>
#include <cassert>
 
#include <ostream>
 
namespace LIEF {
namespace assembly {
namespace x86 {
 
namespace details {
class Operand;
class OperandIt;
}
class LIEF_API Operand {
  public:
  class Iterator final :
    public iterator_facade_base<Iterator, std::forward_iterator_tag, std::unique_ptr<Operand>,
                                std::ptrdiff_t, Operand*, std::unique_ptr<Operand>>
  {
    public:
    using implementation = details::OperandIt;
 
    LIEF_API Iterator();
 
    LIEF_API Iterator(std::unique_ptr<details::OperandIt> impl);
    LIEF_API Iterator(const Iterator&);
    LIEF_API Iterator& operator=(const Iterator&);
 
    LIEF_API Iterator(Iterator&&) noexcept;
    LIEF_API Iterator& operator=(Iterator&&) noexcept;
 
    LIEF_API ~Iterator();
 
    LIEF_API Iterator& operator++();
 
    friend LIEF_API bool operator==(const Iterator& LHS, const Iterator& RHS);
 
    friend bool operator!=(const Iterator& LHS, const Iterator& RHS) {
      return !(LHS == RHS);
    }
 
    LIEF_API std::unique_ptr<Operand> operator*() const;
 
    private:
    std::unique_ptr<details::OperandIt> impl_;
  };

std::string to_string() const;

template<class T>

const T* as() const {

static_assert(std::is_base_of<Operand, T>::value,

"Require Operand inheritance");

if (T::classof(this)) {

return static_cast<const T*>(this);

}

return nullptr;

}

virtual ~Operand();

static LIEF_LOCAL std::unique_ptr<Operand>

create(std::unique_ptr<details::Operand> impl);

LIEF_LOCAL const details::Operand& impl() const {

assert(impl_ != nullptr);

return *impl_;

}

LIEF_LOCAL details::Operand& impl() {

assert(impl_ != nullptr);

return *impl_;

}

friend LIEF_API std::ostream& operator<<(std::ostream& os, const Operand& op) {

os << op.to_string();

return os;

}

protected:

LIEF_LOCAL Operand(std::unique_ptr<details::Operand> impl);

std::unique_ptr<details::Operand> impl_;

};