Add CSG parser code

cmake_minimum_required(VERSION 3.14)

################################################################################

# CSG Parser

################################################################################

add_library(csg)

target_sources(csg PRIVATE

  src/csg/impl/parser.cpp

  src/csg/impl/levelset.cpp

  src/csg/impl/csg.cpp

  )

set(CMAKE_CXX_STANDARD 17)

set(CMAKE_CXX_STANDARD_REQUIRED ON)

set(CMAKE_CXX_EXTENSIONS OFF)

target_include_directories(csg PRIVATE

  ${CMAKE_CURRENT_SOURCE_DIR}/subprojects/PEGTL/include)

project(MFIX-Parser

   DESCRIPTION  "A parser for MFIX-Exa input files"

   HOMEPAGE_URL "https://mfix.netl.doe.gov/gitlab/exa/mfix-parser"

   LANGUAGES    CXX

   )

target_link_libraries(csg PRIVATE stdc++fs)

target_compile_features(csg PRIVATE cxx_std_17)

set( CMAKE_EXPORT_COMPILE_COMMANDS ON )

set(USE_CCACHE "")

find_program(CCACHE_FOUND ccache)

if(CCACHE_FOUND)

  set( CMAKE_CXX_COMPILER_LAUNCHER ccache )

SET(catch2_dir ${CMAKE_CURRENT_SOURCE_DIR}/subprojects/Catch2)

if(NOT EXISTS "${catch2_dir}/CMakeLists.txt")

  message(FATAL_ERROR "File ${catch2_dir}/CMakeLists.txt does not exist!  The submodules were not downloaded! GIT_SUBMODULE was turned off or failed. Please update submodules and try again.")

endif()

add_subdirectory(src)

add_subdirectory(tests)

add_subdirectory(${catch2_dir} ${CMAKE_CURRENT_BINARY_DIR}/catch_build)

list(APPEND CMAKE_MODULE_PATH "${catch2_dir}/contrib/")

include(CTest)

include(Catch)

find_program(CLANG_FMT NAMES clang-format-9 clang-format-8 clang-format-7 clang-format)

if(CLANG_FMT)

  get_target_property(_psrcs unit_tests SOURCES)

  get_target_property(_csg_srcs csg SOURCES)

  file(GLOB _csg_incs ${CMAKE_CURRENT_SOURCE_DIR}/*.hpp ${CMAKE_CURRENT_SOURCE_DIR}/impl/*.hpp)

  add_custom_target(fmt_csg

    COMMAND ${CLANG_FMT} -i ${_csg_srcs} ${_csg_incs}

    WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}

    )

  add_custom_target(fmt_test

    COMMAND ${CLANG_FMT} -i ${_psrcs}

    COMMAND ${CLANG_FMT} -i ${_ut_srcs} ${_ft_srcs}

    WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/tests

    )

  file(GLOB _includes ${PROJECT_SOURCE_DIR}/src/*.hpp)

  add_custom_target(fmt)

  add_dependencies(fmt fmt_test)

  add_dependencies(fmt fmt_test fmt_csg)

endif()

set(EXENAME "mfix-parser")

add_executable(${EXENAME} src/main.cpp)

target_link_libraries(${EXENAME} parser)

tao_inc = include_directories('subprojects/PEGTL/include')

catch2_inc = include_directories('subprojects/Catch2/single_include')

parser_inc = include_directories('src')

parser_inc = include_directories(

  'src/csg',

  'src/csg/impl',

  'src/inputs')

subdir('src')

subdir('tests')

subdir('src/csg')

subdir('src/inputs')

executable(

  'mfix-parser',

  'src/main.cpp',

  include_directories: parser_inc,

  link_with: [

    lib_csg_parser,

    lib_inputs_parser,

  ])

################################################################################

# inputs Parser

################################################################################

add_library(parser

  parser.cpp

  solver.cpp

  )

target_include_directories(parser PRIVATE

  ${CMAKE_SOURCE_DIR}/subprojects/PEGTL/include)

target_link_libraries(parser PRIVATE stdc++fs)

#ifndef CSG_H_

#define CSG_H_

#if defined(CSG_USE_GPU) && !defined(CSG_GPU_HOST_DEVICE)

#define CSG_GPU_HOST_DEVICE __host__ __device__

#else

#define CSG_GPU_HOST_DEVICE

#endif

#include <array>

#include <memory>

#include <tuple>

#include <vector>

namespace csg {

struct GPUable {};

template <class D, class Enable = void> struct IsGPUable : std::false_type {};

template <class D>

struct IsGPUable<

    D, typename std::enable_if<std::is_base_of<GPUable, D>::value>::type>

    : std::true_type {};

struct Tree;

std::shared_ptr<Tree> parse_csg(std::string);

class CsgIF : GPUable {

public:

  CsgIF(std::shared_ptr<Tree> a_state);

  CsgIF(const CsgIF &rhs);

  CsgIF(CsgIF &&rhs) noexcept;

  CsgIF &operator=(const CsgIF &rhs) = delete;

  CsgIF &operator=(CsgIF &&rhs) = delete;

  ~CsgIF();

  CSG_GPU_HOST_DEVICE

  double operator()(double xx, double yy, double zz) const noexcept;

  inline double operator()(const std::array<double, 3> &p) const noexcept {

    return this->operator()(p[0], p[1], p[2]);

  }

private:

  std::shared_ptr<Tree> m_state;

  class Impl;

  std::unique_ptr<Impl> m_pimpl;

};

} // namespace csg

#endif

#include "../csg.hpp"

#include "csg_types.hpp"

namespace csg {

class CsgIF::Impl {

public:

  double call_signed_distance(const std::shared_ptr<Tree> &a_tree, double xx,

                              double yy, double zz) const {

    return signed_distance(a_tree->top, xx, yy, zz);

  }

};

CsgIF::CsgIF(const CsgIF &rhs)

    : m_state(rhs.m_state), m_pimpl(std::make_unique<Impl>(*rhs.m_pimpl)) {}

CsgIF::CsgIF(std::shared_ptr<Tree> a_state)

    : m_state(a_state), m_pimpl(std::make_unique<Impl>()) {}

CsgIF::CsgIF(CsgIF &&rhs) noexcept = default;

CsgIF::~CsgIF() = default;

double CsgIF::operator()(double xx, double yy, double zz) const noexcept {

  return m_pimpl->call_signed_distance(m_state, xx, yy, zz);

}

} // namespace csg