# create source groups for IDEs such as Visual Studio & XCode

function(create_source_groups prefix)
  foreach(file ${ARGN})
    get_filename_component(file "${file}" ABSOLUTE)
    string(FIND "${file}" "${PROJECT_BINARY_DIR}/" pos)
    if(pos EQUAL 0)
      source_group(TREE "${PROJECT_BINARY_DIR}/" PREFIX "Generated Files" FILES "${file}")
    else()
      source_group(TREE "${PROJECT_SOURCE_DIR}/" PREFIX "${prefix}" FILES "${file}")
    endif()
  endforeach()
endfunction()

function(get_source_path PATH NAME)
  if(EXISTS ${VALHALLA_SOURCE_DIR}/src/${NAME}.cc)
    set(${PATH} ${VALHALLA_SOURCE_DIR}/src/${NAME}.cc PARENT_SCOPE)
  elseif(EXISTS ${VALHALLA_SOURCE_DIR}/src/meili/${NAME}.cc)
    set(${PATH} ${VALHALLA_SOURCE_DIR}/src/meili/${NAME}.cc PARENT_SCOPE)
  elseif(EXISTS ${VALHALLA_SOURCE_DIR}/src/mjolnir/${NAME}.cc)
    set(${PATH} ${VALHALLA_SOURCE_DIR}/src/mjolnir/${NAME}.cc PARENT_SCOPE)
  else()
    message(FATAL_ERROR "no source path for ${NAME}")
  endif()
endfunction()