// This file is part of Eigen, a lightweight C++ template library
// for linear algebra.
//
// Copyright (C) 2008 Benoit Jacob <jacob.benoit.1@gmail.com>
// Copyright (C) 2010 Hauke Heibel <hauke.heibel@gmail.com>
//
// This Source Code Form is subject to the terms of the Mozilla
// Public License v. 2.0. If a copy of the MPL was not distributed
// with this file, You can obtain one at http://mozilla.org/MPL/2.0/.

#include "main.h"
#include <Eigen/StdList>
#include <Eigen/Geometry>

template <typename MatrixType>
void check_stdlist_matrix(const MatrixType& m) {
  Index rows = m.rows();
  Index cols = m.cols();
  MatrixType x = MatrixType::Random(rows, cols), y = MatrixType::Random(rows, cols);
  std::list<MatrixType, Eigen::aligned_allocator<MatrixType> > v(10, MatrixType::Zero(rows, cols)), w(20, y);
  v.front() = x;
  w.front() = w.back();
  VERIFY_IS_APPROX(w.front(), w.back());
  v = w;

  typename std::list<MatrixType, Eigen::aligned_allocator<MatrixType> >::iterator vi = v.begin();
  typename std::list<MatrixType, Eigen::aligned_allocator<MatrixType> >::iterator wi = w.begin();
  for (int i = 0; i < 20; i++) {
    VERIFY_IS_APPROX(*vi, *wi);
    ++vi;
    ++wi;
  }

  v.resize(21, MatrixType::Zero(rows, cols));
  v.back() = x;
  VERIFY_IS_APPROX(v.back(), x);
  v.resize(22, y);
  VERIFY_IS_APPROX(v.back(), y);
  v.push_back(x);
  VERIFY_IS_APPROX(v.back(), x);
}

template <typename TransformType>
void check_stdlist_transform(const TransformType&) {
  typedef typename TransformType::MatrixType MatrixType;
  TransformType x(MatrixType::Random()), y(MatrixType::Random()), ti = TransformType::Identity();
  std::list<TransformType, Eigen::aligned_allocator<TransformType> > v(10, ti), w(20, y);
  v.front() = x;
  w.front() = w.back();
  VERIFY_IS_APPROX(w.front(), w.back());
  v = w;

  typename std::list<TransformType, Eigen::aligned_allocator<TransformType> >::iterator vi = v.begin();
  typename std::list<TransformType, Eigen::aligned_allocator<TransformType> >::iterator wi = w.begin();
  for (int i = 0; i < 20; i++) {
    VERIFY_IS_APPROX(*vi, *wi);
    ++vi;
    ++wi;
  }

  v.resize(21, ti);
  v.back() = x;
  VERIFY_IS_APPROX(v.back(), x);
  v.resize(22, y);
  VERIFY_IS_APPROX(v.back(), y);
  v.push_back(x);
  VERIFY_IS_APPROX(v.back(), x);
}

template <typename QuaternionType>
void check_stdlist_quaternion(const QuaternionType&) {
  typedef typename QuaternionType::Coefficients Coefficients;
  QuaternionType x(Coefficients::Random()), y(Coefficients::Random()), qi = QuaternionType::Identity();
  std::list<QuaternionType, Eigen::aligned_allocator<QuaternionType> > v(10, qi), w(20, y);
  v.front() = x;
  w.front() = w.back();
  VERIFY_IS_APPROX(w.front(), w.back());
  v = w;

  typename std::list<QuaternionType, Eigen::aligned_allocator<QuaternionType> >::iterator vi = v.begin();
  typename std::list<QuaternionType, Eigen::aligned_allocator<QuaternionType> >::iterator wi = w.begin();
  for (int i = 0; i < 20; i++) {
    VERIFY_IS_APPROX(*vi, *wi);
    ++vi;
    ++wi;
  }

  v.resize(21, qi);
  v.back() = x;
  VERIFY_IS_APPROX(v.back(), x);
  v.resize(22, y);
  VERIFY_IS_APPROX(v.back(), y);
  v.push_back(x);
  VERIFY_IS_APPROX(v.back(), x);
}

EIGEN_DECLARE_TEST(stdlist) {
  // some non vectorizable fixed sizes
  CALL_SUBTEST_1(check_stdlist_matrix(Vector2f()));
  CALL_SUBTEST_1(check_stdlist_matrix(Matrix3f()));
  CALL_SUBTEST_2(check_stdlist_matrix(Matrix3d()));

  // some vectorizable fixed sizes
  CALL_SUBTEST_1(check_stdlist_matrix(Matrix2f()));
  CALL_SUBTEST_1(check_stdlist_matrix(Vector4f()));
  CALL_SUBTEST_1(check_stdlist_matrix(Matrix4f()));
  CALL_SUBTEST_2(check_stdlist_matrix(Matrix4d()));

  // some dynamic sizes
  CALL_SUBTEST_3(check_stdlist_matrix(MatrixXd(1, 1)));
  CALL_SUBTEST_3(check_stdlist_matrix(VectorXd(20)));
  CALL_SUBTEST_3(check_stdlist_matrix(RowVectorXf(20)));
  CALL_SUBTEST_3(check_stdlist_matrix(MatrixXcf(10, 10)));

  // some Transform
  CALL_SUBTEST_4(check_stdlist_transform(Affine2f()));
  CALL_SUBTEST_4(check_stdlist_transform(Affine3f()));
  CALL_SUBTEST_4(check_stdlist_transform(Affine3d()));

  // some Quaternion
  CALL_SUBTEST_5(check_stdlist_quaternion(Quaternionf()));
  CALL_SUBTEST_5(check_stdlist_quaternion(Quaterniond()));
}
