"""
    base_info holds classes that define the information
    needed for building C++ extension modules for Python that
    handle different data types.  The information includes
    such as include files, libraries, and even code snippets.

    base_info -- base class for cxx_info, blitz_info, etc.
    info_list -- a handy list class for working with multiple
                 info classes at the same time.
"""
from __future__ import absolute_import, print_function

import UserList


class base_info(object):
    _warnings = []
    _headers = []
    _include_dirs = []
    _libraries = []
    _library_dirs = []
    _support_code = []
    _module_init_code = []
    _sources = []
    _define_macros = []
    _undefine_macros = []
    _extra_compile_args = []
    _extra_link_args = []
    compiler = ''

    def set_compiler(self,compiler):
        self.check_compiler(compiler)
        self.compiler = compiler

    # it would probably be better to specify what the arguments are
    # to avoid confusion, but I don't think these classes will get
    # very complicated, and I don't really know the variety of things
    # that should be passed in at this point.
    def check_compiler(self,compiler):
        pass

    def warnings(self):
        return self._warnings

    def headers(self):
        return self._headers

    def include_dirs(self):
        return self._include_dirs

    def libraries(self):
        return self._libraries

    def library_dirs(self):
        return self._library_dirs

    def support_code(self):
        return self._support_code

    def module_init_code(self):
        return self._module_init_code

    def sources(self):
        return self._sources

    def define_macros(self):
        return self._define_macros

    def undefine_macros(self):
        return self._undefine_macros

    def extra_compile_args(self):
        return self._extra_compile_args

    def extra_link_args(self):
        return self._extra_link_args


class custom_info(base_info):
    def __init__(self):
        self._warnings = []
        self._headers = []
        self._include_dirs = []
        self._libraries = []
        self._library_dirs = []
        self._support_code = []
        self._module_init_code = []
        self._sources = []
        self._define_macros = []
        self._undefine_macros = []
        self._extra_compile_args = []
        self._extra_link_args = []

    def add_warning(self,warning):
        self._warnings.append(warning)

    def add_header(self,header):
        self._headers.append(header)

    def add_include_dir(self,include_dir):
        self._include_dirs.append(include_dir)

    def add_library(self,library):
        self._libraries.append(library)

    def add_library_dir(self,library_dir):
        self._library_dirs.append(library_dir)

    def add_support_code(self,support_code):
        self._support_code.append(support_code)

    def add_module_init_code(self,module_init_code):
        self._module_init_code.append(module_init_code)

    def add_source(self,source):
        self._sources.append(source)

    def add_define_macro(self,define_macro):
        self._define_macros.append(define_macro)

    def add_undefine_macro(self,undefine_macro):
        self._undefine_macros.append(undefine_macro)

    def add_extra_compile_arg(self,compile_arg):
        return self._extra_compile_args.append(compile_arg)

    def add_extra_link_arg(self,link_arg):
        return self._extra_link_args.append(link_arg)


class info_list(UserList.UserList):
    def get_unique_values(self,attribute):
        all_values = []
        for info in self:
            vals = eval('info.'+attribute+'()')
            all_values.extend(vals)
        return unique_values(all_values)

    def extra_compile_args(self):
        return self.get_unique_values('extra_compile_args')

    def extra_link_args(self):
        return self.get_unique_values('extra_link_args')

    def sources(self):
        return self.get_unique_values('sources')

    def define_macros(self):
        return self.get_unique_values('define_macros')

    def sources(self):
        return self.get_unique_values('sources')

    def warnings(self):
        return self.get_unique_values('warnings')

    def headers(self):
        return self.get_unique_values('headers')

    def include_dirs(self):
        return self.get_unique_values('include_dirs')

    def libraries(self):
        return self.get_unique_values('libraries')

    def library_dirs(self):
        return self.get_unique_values('library_dirs')

    def support_code(self):
        return self.get_unique_values('support_code')

    def module_init_code(self):
        return self.get_unique_values('module_init_code')


def unique_values(lst):
    all_values = []
    for value in lst:
        if value not in all_values or value == '-framework':
            all_values.append(value)
    return all_values
