| # Generated by Snowball 2.2.0 - https://snowballstem.org/ |
| |
| from .basestemmer import BaseStemmer |
| from .among import Among |
| |
| |
| class SwedishStemmer(BaseStemmer): |
| ''' |
| This class implements the stemming algorithm defined by a snowball script. |
| Generated by Snowball 2.2.0 - https://snowballstem.org/ |
| ''' |
| |
| a_0 = [ |
| Among(u"a", -1, 1), |
| Among(u"arna", 0, 1), |
| Among(u"erna", 0, 1), |
| Among(u"heterna", 2, 1), |
| Among(u"orna", 0, 1), |
| Among(u"ad", -1, 1), |
| Among(u"e", -1, 1), |
| Among(u"ade", 6, 1), |
| Among(u"ande", 6, 1), |
| Among(u"arne", 6, 1), |
| Among(u"are", 6, 1), |
| Among(u"aste", 6, 1), |
| Among(u"en", -1, 1), |
| Among(u"anden", 12, 1), |
| Among(u"aren", 12, 1), |
| Among(u"heten", 12, 1), |
| Among(u"ern", -1, 1), |
| Among(u"ar", -1, 1), |
| Among(u"er", -1, 1), |
| Among(u"heter", 18, 1), |
| Among(u"or", -1, 1), |
| Among(u"s", -1, 2), |
| Among(u"as", 21, 1), |
| Among(u"arnas", 22, 1), |
| Among(u"ernas", 22, 1), |
| Among(u"ornas", 22, 1), |
| Among(u"es", 21, 1), |
| Among(u"ades", 26, 1), |
| Among(u"andes", 26, 1), |
| Among(u"ens", 21, 1), |
| Among(u"arens", 29, 1), |
| Among(u"hetens", 29, 1), |
| Among(u"erns", 21, 1), |
| Among(u"at", -1, 1), |
| Among(u"andet", -1, 1), |
| Among(u"het", -1, 1), |
| Among(u"ast", -1, 1) |
| ] |
| |
| a_1 = [ |
| Among(u"dd", -1, -1), |
| Among(u"gd", -1, -1), |
| Among(u"nn", -1, -1), |
| Among(u"dt", -1, -1), |
| Among(u"gt", -1, -1), |
| Among(u"kt", -1, -1), |
| Among(u"tt", -1, -1) |
| ] |
| |
| a_2 = [ |
| Among(u"ig", -1, 1), |
| Among(u"lig", 0, 1), |
| Among(u"els", -1, 1), |
| Among(u"fullt", -1, 3), |
| Among(u"l\u00F6st", -1, 2) |
| ] |
| |
| g_v = [17, 65, 16, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 24, 0, 32] |
| |
| g_s_ending = [119, 127, 149] |
| |
| I_x = 0 |
| I_p1 = 0 |
| |
| def __r_mark_regions(self): |
| self.I_p1 = self.limit |
| v_1 = self.cursor |
| c = self.cursor + 3 |
| if c > self.limit: |
| return False |
| self.cursor = c |
| self.I_x = self.cursor |
| self.cursor = v_1 |
| if not self.go_out_grouping(SwedishStemmer.g_v, 97, 246): |
| return False |
| if not self.go_in_grouping(SwedishStemmer.g_v, 97, 246): |
| return False |
| self.cursor += 1 |
| self.I_p1 = self.cursor |
| try: |
| if not self.I_p1 < self.I_x: |
| raise lab0() |
| self.I_p1 = self.I_x |
| except lab0: pass |
| return True |
| |
| def __r_main_suffix(self): |
| if self.cursor < self.I_p1: |
| return False |
| v_2 = self.limit_backward |
| self.limit_backward = self.I_p1 |
| self.ket = self.cursor |
| among_var = self.find_among_b(SwedishStemmer.a_0) |
| if among_var == 0: |
| self.limit_backward = v_2 |
| return False |
| self.bra = self.cursor |
| self.limit_backward = v_2 |
| if among_var == 1: |
| if not self.slice_del(): |
| return False |
| |
| else: |
| if not self.in_grouping_b(SwedishStemmer.g_s_ending, 98, 121): |
| return False |
| if not self.slice_del(): |
| return False |
| |
| return True |
| |
| def __r_consonant_pair(self): |
| if self.cursor < self.I_p1: |
| return False |
| v_2 = self.limit_backward |
| self.limit_backward = self.I_p1 |
| v_3 = self.limit - self.cursor |
| if self.find_among_b(SwedishStemmer.a_1) == 0: |
| self.limit_backward = v_2 |
| return False |
| self.cursor = self.limit - v_3 |
| self.ket = self.cursor |
| if self.cursor <= self.limit_backward: |
| self.limit_backward = v_2 |
| return False |
| self.cursor -= 1 |
| self.bra = self.cursor |
| if not self.slice_del(): |
| return False |
| |
| self.limit_backward = v_2 |
| return True |
| |
| def __r_other_suffix(self): |
| if self.cursor < self.I_p1: |
| return False |
| v_2 = self.limit_backward |
| self.limit_backward = self.I_p1 |
| self.ket = self.cursor |
| among_var = self.find_among_b(SwedishStemmer.a_2) |
| if among_var == 0: |
| self.limit_backward = v_2 |
| return False |
| self.bra = self.cursor |
| if among_var == 1: |
| if not self.slice_del(): |
| return False |
| |
| elif among_var == 2: |
| if not self.slice_from(u"l\u00F6s"): |
| return False |
| else: |
| if not self.slice_from(u"full"): |
| return False |
| self.limit_backward = v_2 |
| return True |
| |
| def _stem(self): |
| v_1 = self.cursor |
| self.__r_mark_regions() |
| self.cursor = v_1 |
| self.limit_backward = self.cursor |
| self.cursor = self.limit |
| v_2 = self.limit - self.cursor |
| self.__r_main_suffix() |
| self.cursor = self.limit - v_2 |
| v_3 = self.limit - self.cursor |
| self.__r_consonant_pair() |
| self.cursor = self.limit - v_3 |
| v_4 = self.limit - self.cursor |
| self.__r_other_suffix() |
| self.cursor = self.limit - v_4 |
| self.cursor = self.limit_backward |
| return True |
| |
| |
| class lab0(BaseException): pass |
