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✏️ Editing: german_stemmer.py

# Generated by Snowball 2.2.0 - https://snowballstem.org/

from .basestemmer import BaseStemmer
from .among import Among

class GermanStemmer(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"", -1, 5),
        Among(u"U", 0, 2),
        Among(u"Y", 0, 1),
        Among(u"\u00E4", 0, 3),
        Among(u"\u00F6", 0, 4),
        Among(u"\u00FC", 0, 2)
    ]

a_1 = [
        Among(u"e", -1, 2),
        Among(u"em", -1, 1),
        Among(u"en", -1, 2),
        Among(u"ern", -1, 1),
        Among(u"er", -1, 1),
        Among(u"s", -1, 3),
        Among(u"es", 5, 2)
    ]

a_2 = [
        Among(u"en", -1, 1),
        Among(u"er", -1, 1),
        Among(u"st", -1, 2),
        Among(u"est", 2, 1)
    ]

a_3 = [
        Among(u"ig", -1, 1),
        Among(u"lich", -1, 1)
    ]

a_4 = [
        Among(u"end", -1, 1),
        Among(u"ig", -1, 2),
        Among(u"ung", -1, 1),
        Among(u"lich", -1, 3),
        Among(u"isch", -1, 2),
        Among(u"ik", -1, 2),
        Among(u"heit", -1, 3),
        Among(u"keit", -1, 4)
    ]

g_v = [17, 65, 16, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 8, 0, 32, 8]

g_s_ending = [117, 30, 5]

g_st_ending = [117, 30, 4]

I_x = 0
    I_p2 = 0
    I_p1 = 0

def __r_prelude(self):
        v_1 = self.cursor
        while True:
            v_2 = self.cursor
            try:
                try:
                    v_3 = self.cursor
                    try:
                        self.bra = self.cursor
                        if not self.eq_s(u"\u00DF"):
                            raise lab2()
                        self.ket = self.cursor
                        if not self.slice_from(u"ss"):
                            return False
                        raise lab1()
                    except lab2: pass
                    self.cursor = v_3
                    if self.cursor >= self.limit:
                        raise lab0()
                    self.cursor += 1
                except lab1: pass
                continue
            except lab0: pass
            self.cursor = v_2
            break
        self.cursor = v_1
        while True:
            v_4 = self.cursor
            try:
                try:
                    while True:
                        v_5 = self.cursor
                        try:
                            if not self.in_grouping(GermanStemmer.g_v, 97, 252):
                                raise lab5()
                            self.bra = self.cursor
                            try:
                                v_6 = self.cursor
                                try:
                                    if not self.eq_s(u"u"):
                                        raise lab7()
                                    self.ket = self.cursor
                                    if not self.in_grouping(GermanStemmer.g_v, 97, 252):
                                        raise lab7()
                                    if not self.slice_from(u"U"):
                                        return False
                                    raise lab6()
                                except lab7: pass
                                self.cursor = v_6
                                if not self.eq_s(u"y"):
                                    raise lab5()
                                self.ket = self.cursor
                                if not self.in_grouping(GermanStemmer.g_v, 97, 252):
                                    raise lab5()
                                if not self.slice_from(u"Y"):
                                    return False
                            except lab6: pass
                            self.cursor = v_5
                            raise lab4()
                        except lab5: pass
                        self.cursor = v_5
                        if self.cursor >= self.limit:
                            raise lab3()
                        self.cursor += 1
                except lab4: pass
                continue
            except lab3: pass
            self.cursor = v_4
            break
        return True

def __r_mark_regions(self):
        self.I_p1 = self.limit
        self.I_p2 = 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(GermanStemmer.g_v, 97, 252):
            return False
        self.cursor += 1
        if not self.go_in_grouping(GermanStemmer.g_v, 97, 252):
            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
        if not self.go_out_grouping(GermanStemmer.g_v, 97, 252):
            return False
        self.cursor += 1
        if not self.go_in_grouping(GermanStemmer.g_v, 97, 252):
            return False
        self.cursor += 1
        self.I_p2 = self.cursor
        return True

def __r_postlude(self):
        while True:
            v_1 = self.cursor
            try:
                self.bra = self.cursor
                among_var = self.find_among(GermanStemmer.a_0)
                if among_var == 0:
                    raise lab0()
                self.ket = self.cursor
                if among_var == 1:
                    if not self.slice_from(u"y"):
                        return False
                elif among_var == 2:
                    if not self.slice_from(u"u"):
                        return False
                elif among_var == 3:
                    if not self.slice_from(u"a"):
                        return False
                elif among_var == 4:
                    if not self.slice_from(u"o"):
                        return False
                else:
                    if self.cursor >= self.limit:
                        raise lab0()
                    self.cursor += 1
                continue
            except lab0: pass
            self.cursor = v_1
            break
        return True

def __r_R1(self):
        if not self.I_p1 <= self.cursor:
            return False
        return True

def __r_R2(self):
        if not self.I_p2 <= self.cursor:
            return False
        return True

def __r_standard_suffix(self):
        v_1 = self.limit - self.cursor
        try:
            self.ket = self.cursor
            among_var = self.find_among_b(GermanStemmer.a_1)
            if among_var == 0:
                raise lab0()
            self.bra = self.cursor
            if not self.__r_R1():
                raise lab0()
            if among_var == 1:
                if not self.slice_del():
                    return False

elif among_var == 2:
                if not self.slice_del():
                    return False

v_2 = self.limit - self.cursor
                try:
                    self.ket = self.cursor
                    if not self.eq_s_b(u"s"):
                        self.cursor = self.limit - v_2
                        raise lab1()
                    self.bra = self.cursor
                    if not self.eq_s_b(u"nis"):
                        self.cursor = self.limit - v_2
                        raise lab1()
                    if not self.slice_del():
                        return False

except lab1: pass
            else:
                if not self.in_grouping_b(GermanStemmer.g_s_ending, 98, 116):
                    raise lab0()
                if not self.slice_del():
                    return False

except lab0: pass
        self.cursor = self.limit - v_1
        v_3 = self.limit - self.cursor
        try:
            self.ket = self.cursor
            among_var = self.find_among_b(GermanStemmer.a_2)
            if among_var == 0:
                raise lab2()
            self.bra = self.cursor
            if not self.__r_R1():
                raise lab2()
            if among_var == 1:
                if not self.slice_del():
                    return False

else:
                if not self.in_grouping_b(GermanStemmer.g_st_ending, 98, 116):
                    raise lab2()
                c = self.cursor - 3
                if c < self.limit_backward:
                    raise lab2()
                self.cursor = c
                if not self.slice_del():
                    return False

except lab2: pass
        self.cursor = self.limit - v_3
        v_4 = self.limit - self.cursor
        try:
            self.ket = self.cursor
            among_var = self.find_among_b(GermanStemmer.a_4)
            if among_var == 0:
                raise lab3()
            self.bra = self.cursor
            if not self.__r_R2():
                raise lab3()
            if among_var == 1:
                if not self.slice_del():
                    return False

v_5 = self.limit - self.cursor
                try:
                    self.ket = self.cursor
                    if not self.eq_s_b(u"ig"):
                        self.cursor = self.limit - v_5
                        raise lab4()
                    self.bra = self.cursor
                    v_6 = self.limit - self.cursor
                    try:
                        if not self.eq_s_b(u"e"):
                            raise lab5()
                        self.cursor = self.limit - v_5
                        raise lab4()
                    except lab5: pass
                    self.cursor = self.limit - v_6
                    if not self.__r_R2():
                        self.cursor = self.limit - v_5
                        raise lab4()
                    if not self.slice_del():
                        return False

except lab4: pass
            elif among_var == 2:
                v_7 = self.limit - self.cursor
                try:
                    if not self.eq_s_b(u"e"):
                        raise lab6()
                    raise lab3()
                except lab6: pass
                self.cursor = self.limit - v_7
                if not self.slice_del():
                    return False

elif among_var == 3:
                if not self.slice_del():
                    return False

v_8 = self.limit - self.cursor
                try:
                    self.ket = self.cursor
                    try:
                        v_9 = self.limit - self.cursor
                        try:
                            if not self.eq_s_b(u"er"):
                                raise lab9()
                            raise lab8()
                        except lab9: pass
                        self.cursor = self.limit - v_9
                        if not self.eq_s_b(u"en"):
                            self.cursor = self.limit - v_8
                            raise lab7()
                    except lab8: pass
                    self.bra = self.cursor
                    if not self.__r_R1():
                        self.cursor = self.limit - v_8
                        raise lab7()
                    if not self.slice_del():
                        return False

except lab7: pass
            else:
                if not self.slice_del():
                    return False

v_10 = self.limit - self.cursor
                try:
                    self.ket = self.cursor
                    if self.find_among_b(GermanStemmer.a_3) == 0:
                        self.cursor = self.limit - v_10
                        raise lab10()
                    self.bra = self.cursor
                    if not self.__r_R2():
                        self.cursor = self.limit - v_10
                        raise lab10()
                    if not self.slice_del():
                        return False

except lab10: pass
        except lab3: pass
        self.cursor = self.limit - v_4
        return True

def _stem(self):
        v_1 = self.cursor
        self.__r_prelude()
        self.cursor = v_1
        v_2 = self.cursor
        self.__r_mark_regions()
        self.cursor = v_2
        self.limit_backward = self.cursor
        self.cursor = self.limit
        self.__r_standard_suffix()
        self.cursor = self.limit_backward
        v_4 = self.cursor
        self.__r_postlude()
        self.cursor = v_4
        return True

class lab0(BaseException): pass

class lab1(BaseException): pass

class lab2(BaseException): pass

class lab3(BaseException): pass

class lab4(BaseException): pass

class lab5(BaseException): pass

class lab6(BaseException): pass

class lab7(BaseException): pass

class lab8(BaseException): pass

class lab9(BaseException): pass

class lab10(BaseException): pass

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