rs_bindings_from_cc/test/struct/inheritance/upcast.h

// Part of the Crubit project, under the Apache License v2.0 with LLVM
// Exceptions. See /LICENSE for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception

#ifndef THIRD_PARTY_CRUBIT_RS_BINDINGS_FROM_CC_TEST_STRUCT_INHERITANCE_UPCAST_H_
#define THIRD_PARTY_CRUBIT_RS_BINDINGS_FROM_CC_TEST_STRUCT_INHERITANCE_UPCAST_H_
#include <stddef.h>

#pragma clang lifetime_elision

class Base0 {};

class Base1 {
  int base1_field_ = 1;  // NOLINT(clang-diagnostic-unused-private-field)
};
class Base2 {
  char base2_field_ = 2;  // NOLINT(clang-diagnostic-unused-private-field)
};
class Base3 {
  char base3_field_ = 3;  // NOLINT(clang-diagnostic-unused-private-field)
};

class Base4 : public Base2, public Base3 {
  char base4_field_ = 4;  // NOLINT(clang-diagnostic-unused-private-field)
};

struct Derived final : Base0, Base1, Base4 {
  char derived_field = 5;

  size_t base0_address() const {
    const Base0* base = this;
    return reinterpret_cast<size_t>(base);
  }

  size_t base1_address() const {
    const Base1* base = this;
    return reinterpret_cast<size_t>(base);
  }

  size_t base2_address() const {
    const Base2* base = this;
    return reinterpret_cast<size_t>(base);
  }

  size_t base3_address() const {
    const Base3* base = this;
    return reinterpret_cast<size_t>(base);
  }

  size_t base4_address() const {
    const Base4* base = this;
    return reinterpret_cast<size_t>(base);
  }

 private:
  char private_field;  // NOLINT(clang-diagnostic-unused-private-field)
};

#endif  // THIRD_PARTY_CRUBIT_RS_BINDINGS_FROM_CC_TEST_STRUCT_INHERITANCE_UPCAST_H_