createlanguagesupport.cmake

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ENDMACRO(ADD_PYTHON_VEC_TYPEMAP)

MACRO(ADD_PYTHON_VARIABLE_LENGHT_SEQ_TYPEMAP type value_type)
  SET(text "\n\n")
  SET(text "${text}#ifdef SWIGPYTHON\n")
  SET(text "${text}%typemap(in) ${type}& (${type} itks) {\n")
  SET(text "${text}  if ((SWIG_ConvertPtr($input,(void **)(&$1),$1_descriptor, 0)) == -1) {\n")
  SET(text "${text}    PyErr_Clear();\n")
  SET(text "${text}    itks = ${type}( PyObject_Length($input) );\n")
  SET(text "${text}    for (int i =0; i < itks.GetSize(); i++) {\n")
  SET(text "${text}      PyObject *o = PySequence_GetItem($input,i);\n")
  SET(text "${text}      if (PyInt_Check(o)) {\n")
  SET(text "${text}        itks[i] = (${value_type})PyInt_AsLong(o);\n")
  SET(text "${text}      } else if (PyFloat_Check(o)) {\n")
  SET(text "${text}        itks[i] = (${value_type})PyFloat_AsDouble(o);\n")
  SET(text "${text}      } else {\n")
  SET(text "${text}        PyErr_SetString(PyExc_ValueError,\"Expecting a sequence of int or float\");\n")
  SET(text "${text}        return NULL;\n")
  SET(text "${text}      }\n")
  SET(text "${text}    }\n")
  SET(text "${text}    $1 = &itks;\n")
  SET(text "${text}  }\n")
  SET(text "${text}}\n")
  SET(text "${text}%typemap(typecheck) ${type}& {\n")
  SET(text "${text}  void *ptr;\n")
  SET(text "${text}  if (SWIG_ConvertPtr($input, &ptr, $1_descriptor, 0) == -1\n")
  SET(text "${text}      && !PySequence_Check($input) ) {\n")
  SET(text "${text}    _v = 0;\n")
  SET(text "${text}    PyErr_Clear();\n")
  SET(text "${text}  } else {\n")
  SET(text "${text}    _v = 1;\n")
  SET(text "${text}  }\n")
  SET(text "${text}}\n")
  SET(text "${text}%typemap(in) ${type} (${type} itks) {\n")
  SET(text "${text}  ${type} * s;\n")
  SET(text "${text}  if ((SWIG_ConvertPtr($input,(void **)(&s),$descriptor(${type}*), 0)) == -1) {\n")
  SET(text "${text}    PyErr_Clear();\n")
  SET(text "${text}    itks = ${type}( PyObject_Length($input) );\n")
  SET(text "${text}    for (int i =0; i < itks.GetSize(); i++) {\n")
  SET(text "${text}      PyObject *o = PySequence_GetItem($input,i);\n")
  SET(text "${text}      if (PyInt_Check(o)) {\n")
  SET(text "${text}        itks[i] = (${value_type})PyInt_AsLong(o);\n")
  SET(text "${text}      } else if (PyFloat_Check(o)) {\n")
  SET(text "${text}        itks[i] = (${value_type})PyFloat_AsDouble(o);\n")
  SET(text "${text}      } else {\n")
  SET(text "${text}        PyErr_SetString(PyExc_ValueError,\"Expecting a sequence of int or float\");\n")
  SET(text "${text}        return NULL;\n")
  SET(text "${text}      }\n")
  SET(text "${text}    }\n")
  SET(text "${text}    $1 = itks;\n")
  SET(text "${text}  } else {\n")
  SET(text "${text}  $1 = *s;\n")
  SET(text "${text}  }\n")
  SET(text "${text}}\n")
  SET(text "${text}%typemap(typecheck) ${type} {\n")
  SET(text "${text}  void *ptr;\n")
  SET(text "${text}  if (SWIG_ConvertPtr($input, &ptr, $descriptor(${type}*), 0) == -1\n")
  SET(text "${text}      && !PySequence_Check($input) ) {\n")
  SET(text "${text}    _v = 0;\n")
  SET(text "${text}    PyErr_Clear();\n")
  SET(text "${text}  } else {\n")
  SET(text "${text}    _v = 1;\n")
  SET(text "${text}  }\n")
  SET(text "${text}}\n")
  SET(text "${text}#endif // SWIGPYTHON\n")
  SET(text "${text}\n\n")
  
  SET(WRAPPER_TYPEMAPS "${WRAPPER_TYPEMAPS}${text}")
ENDMACRO(ADD_PYTHON_VARIABLE_LENGHT_SEQ_TYPEMAP)


MACRO(ADD_PYTHON_POINTER_TYPEMAP template_params)
  SET(text "\n\n")
  SET(text "${text}#ifdef SWIGPYTHON\n")
  SET(text "${text} // Python typemaps for Smart Pointers to ${template_params} class. \n\n")
  SET(text "${text}%typemap(out) ${template_params} * {\n")
  SET(text "${text}  std::string methodName = \"\$symname\";\n")
  SET(text "${text}  if(methodName.find(\"GetPointer\") != std::string::npos) {\n")
  SET(text "${text}    // really return a pointer in that case\n")
  SET(text "${text}    \$result = SWIG_NewPointerObj((void *)(\$1), \$1_descriptor, 1);\n")
  SET(text "${text}  } else {\n")
  SET(text "${text}    itk::SmartPointer< ${template_params} > * ptr;\n")
  SET(text "${text}    ptr = new itk::SmartPointer< ${template_params} >(\$1);\n")
  SET(text "${text}    \$result = SWIG_NewPointerObj((void *)(ptr), \$descriptor(itk::SmartPointer< ${template_params} > *), 1);\n")
  SET(text "${text}  }\n")
  SET(text "${text}}\n")
  SET(text "${text}%typemap(in) ${template_params} * {\n")
  SET(text "${text}  itk::SmartPointer< ${template_params} > * sptr;\n")
  SET(text "${text}  ${template_params} * ptr;\n")
  SET(text "${text}  // we must test this case first to avoid a segfault if arg is None\n")
  SET(text "${text}  if ((SWIG_ConvertPtr($input,(void **) &ptr, $1_descriptor, SWIG_POINTER_EXCEPTION)) != -1) {\n")
  SET(text "${text}    // we have a simple pointer. Just return it\n")
  SET(text "${text}    $1 = ptr;\n")
  SET(text "${text}  } else if ((SWIG_ConvertPtr($input,(void **) &sptr, $descriptor(itk::SmartPointer< ${template_params} > *), SWIG_POINTER_EXCEPTION)) != -1) {\n")
  SET(text "${text}    // it's a SmartPointer. Get the pointer and return it\n")
  SET(text "${text}    $1 = sptr->GetPointer();\n")
  SET(text "${text}  } else {\n")
  SET(text "${text}    // not a pointer nor a SmartPointer... typemap fail !\n")
  SET(text "${text}    SWIG_fail;\n")
  SET(text "${text}  }\n")
  SET(text "${text}  // clean the error before exit\n")
  SET(text "${text}  PyErr_Clear();\n")
  SET(text "${text}}\n")
  SET(text "${text}%typemap(typecheck) ${template_params} * {\n")
  SET(text "${text}  void *ptr;\n")
  SET(text "${text}  if (SWIG_ConvertPtr(\$input, &ptr, \$1_descriptor, 0) == -1\n")
  SET(text "${text}      && SWIG_ConvertPtr(\$input, &ptr, \$descriptor(itk::SmartPointer< ${template_params} > *), 0) == -1) {\n")
  SET(text "${text}    _v = 0;\n")
  SET(text "${text}    PyErr_Clear();\n")
  SET(text "${text}  } else {\n")
  SET(text "${text}    _v = 1;\n")
  SET(text "${text}  }\n")
  SET(text "${text}}\n")
  SET(text "${text}#endif // SWIGPYTHON\n")
  SET(text "${text}\n\n")
  
  SET(WRAPPER_TYPEMAPS "${WRAPPER_TYPEMAPS}${text}")
ENDMACRO(ADD_PYTHON_POINTER_TYPEMAP)


MACRO(CONFIGURE_PYTHON_CONFIG_FILES outdir)
  # Pull the WRAPPED_CLASSES list apart and use it to create Python-specific
  # support files. This also uses the global WRAPPER_LIBRARY_DEPENDS,
  # and WRAPPER_LIBRARY_NAME variables.
    
    SET(CONFIG_DEPENDS "")
  FOREACH(dep ${WRAPPER_LIBRARY_DEPENDS})
    SET(CONFIG_DEPENDS "${CONFIG_DEPENDS} '${dep}',")
  ENDFOREACH(dep)
  
  # Deal with the WRAPPED_CLASSES strings, which are in the format
  # "simple name # c++ name # swig name # c++ template parameters"    
  # or "simple name # c++ name # swig name # NO_TEMPLATE"
  # We want to change them to the format:
  # "  ('simple name', 'c++ name', 'swig name', 'template params'),\n"
  # or "  ('simple name', 'c++ name', 'swig name'),\n", respectively.
    
  SET(CONFIG_TEMPLATES "")
  FOREACH(wrapped_class ${WRAPPED_CLASSES})
    # first put the internal quotes in place
    STRING(REGEX REPLACE
      " # "
      "', '"
      py_template_def
      "${wrapped_class}")
    # now put the outside parens and quotes, etc. in place
    SET(py_template_def "  ('${py_template_def}'),\n")
    # now strip out the NO_TEMPLATE if there is none
    STRING(REGEX REPLACE
      ", 'NO_TEMPLATE'"
      ""
      py_template_def
      "${py_template_def}")
    SET(CONFIG_TEMPLATES "${CONFIG_TEMPLATES}${py_template_def}")
  ENDFOREACH(wrapped_class)
  
  CONFIGURE_FILE("${WRAP_ITK_CONFIG_DIR}/LanguageSupport/ModuleConfig.py.in"
    "${outdir}/${WRAPPER_LIBRARY_NAME}Config.py"
    @ONLY IMMEDIATE)
  WRAP_ITK_INSTALL("/Python/Configuration" "${outdir}/${WRAPPER_LIBRARY_NAME}Config.py")
ENDMACRO(CONFIGURE_PYTHON_CONFIG_FILES)

MACRO(CONFIGURE_PYTHON_LOADER_FILE outdir)
  # Create the loader file for importing just the current wrapper library. Uses
  # the global WRAPPER_LIBRARY_NAME variable.
  
  SET(CONFIG_LIBRARY_NAME "${WRAPPER_LIBRARY_NAME}")
  CONFIGURE_FILE("${WRAP_ITK_CONFIG_DIR}/LanguageSupport/ModuleLoader.py.in"
    "${outdir}/${WRAPPER_LIBRARY_NAME}.py"
    @ONLY IMMEDIATE)
ENDMACRO(CONFIGURE_PYTHON_LOADER_FILE)

MACRO(CONFIGURE_PYTHON_EXTERNAL_PROJECT_CONFIG outdir)
  # Create a helper file to set some sys.path entries so that external projects
  # can be easily loaded even when not installed. To use, call 'import ProjectConfig'
  # or 'import ProjectConfig-[Debug|Release|...]' if multiple build styles were
  # selected from an IDE. After this module is imported, the external project
  # can be easily imported by 'import ProjectName'.
  # If ProjectConfig was not used, the user would have to manually set sys.path
  # to point to *both* the Python directory in the WrapITK build tree and the
  # directory where the current project's SWIG libraries have been placed.
  
  IF(CMAKE_CONFIGURATION_TYPES)
    FOREACH(config ${CMAKE_CONFIGURATION_TYPES})
      # SWIG-generated libs and *.py files are sent to ${config} subdir
      SET(CONFIG_WRAP_ITK_PYTHON_DIR "${WrapITK_DIR}/Python/${config}")
      SET(CONFIG_PROJECT_PYTHON_DIR "${CMAKE_BINARY_DIR}/Python/${config}")
      SET(CONFIG_PROJECT_OUTPUT_DIR "${LIBRARY_OUTPUT_PATH}/${config}")
      CONFIGURE_FILE("${WRAP_ITK_CONFIG_DIR}/LanguageSupport/ExternalProjectConfig.py.in"
        "${outdir}/ProjectConfig_${config}.py"
        @ONLY IMMEDIATE)
      CONFIGURE_FILE("${WRAP_ITK_CONFIG_DIR}/LanguageSupport/ExternalProjectConfig.pth.in"
        "${outdir}/${config}/${PROJECT_NAME}.pth"
        @ONLY IMMEDIATE)
  ENDFOREACH(config)
  ELSE(CMAKE_CONFIGURATION_TYPES)
    SET(CONFIG_WRAP_ITK_PYTHON_DIR "${WrapITK_DIR}/Python")
    SET(CONFIG_PROJECT_PYTHON_DIR "${CMAKE_BINARY_DIR}/Python")
    SET(CONFIG_PROJECT_OUTPUT_DIR "${LIBRARY_OUTPUT_PATH}")
    CONFIGURE_FILE("${WRAP_ITK_CONFIG_DIR}/LanguageSupport/ExternalProjectConfig.py.in"
      "${outdir}/ProjectConfig.py"
      @ONLY IMMEDIATE)
    CONFIGURE_FILE("${WRAP_ITK_CONFIG_DIR}/LanguageSupport/ExternalProjectConfig.pth.in"
      "${outdir}/${PROJECT_NAME}.pth"
      @ONLY IMMEDIATE)
  ENDIF(CMAKE_CONFIGURATION_TYPES)
ENDMACRO(CONFIGURE_PYTHON_EXTERNAL_PROJECT_CONFIG)


MACRO(PYTHON_SUPPORT_CONFIGURE_FILES)
  # Create the various files to make it easier to use the ITK wrappers, especially
  # with reference to the multitude of templates.
  # Currently, only Python is supported.
  
    CONFIGURE_PYTHON_CONFIG_FILES("${PROJECT_BINARY_DIR}/Python/Configuration")      
    IF(CMAKE_CONFIGURATION_TYPES)
      FOREACH(config ${CMAKE_CONFIGURATION_TYPES})
        CONFIGURE_PYTHON_LOADER_FILE("${PROJECT_BINARY_DIR}/Python/${config}")
      ENDFOREACH(config)
    ELSE(CMAKE_CONFIGURATION_TYPES)
      CONFIGURE_PYTHON_LOADER_FILE("${PROJECT_BINARY_DIR}/Python/")
    ENDIF(CMAKE_CONFIGURATION_TYPES)
    # Just install the files once, regardless of how many different places
    # they were configured into. If there are no configuration types, the 
    # INTDIR variable expands to '', so no harm done.
    WRAP_ITK_INSTALL("/Python" "${PROJECT_BINARY_DIR}/Python/${WRAP_ITK_INSTALL_INTDIR}${WRAPPER_LIBRARY_NAME}.py")
    IF(EXTERNAL_WRAP_ITK_PROJECT)
      # Configure a python file to make it easier to use this external project
      # without first installing it into WrapITK.
      CONFIGURE_PYTHON_EXTERNAL_PROJECT_CONFIG("${PROJECT_BINARY_DIR}/Python/")
    ENDIF(EXTERNAL_WRAP_ITK_PROJECT)
ENDMACRO(PYTHON_SUPPORT_CONFIGURE_FILES)