1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
#[macro_export]
macro_rules! ext_field_group_operation {
    ($extension_field:ident, $sub_field:ident, $limbs_length:ident) => {
        impl Group for $extension_field {
            type Scalar = $extension_field;

            // Todo: this is not actual generator
            const ADDITIVE_GENERATOR: Self = $extension_field::zero();

            const ADDITIVE_IDENTITY: Self = $extension_field::zero();

            fn zero() -> Self {
                Self::ADDITIVE_GENERATOR
            }

            fn invert(self) -> Option<Self> {
                self.get_invert()
            }

            fn random(mut rand: impl RngCore) -> Self {
                let mut limbs: [$sub_field; $limbs_length] = [$sub_field::zero(); $limbs_length];
                for i in 0..$limbs_length {
                    limbs[i] = $sub_field::random(&mut rand);
                }
                $extension_field(limbs)
            }
        }

        impl PartialEq for $extension_field {
            fn eq(&self, other: &Self) -> bool {
                let mut acc = true;
                self.0.iter().zip(other.0.iter()).for_each(|(a, b)| {
                    acc = acc && a == b;
                });
                acc
            }
        }

        impl Eq for $extension_field {}

        impl Add for $extension_field {
            type Output = Self;

            #[inline]
            fn add(self, rhs: $extension_field) -> Self {
                let mut limbs: [$sub_field; $limbs_length] = [$sub_field::zero(); $limbs_length];
                for i in 0..$limbs_length {
                    limbs[i] = self.0[i] + rhs.0[i];
                }
                $extension_field(limbs)
            }
        }

        impl<'a, 'b> Add<&'b $extension_field> for &'a $extension_field {
            type Output = $extension_field;

            fn add(self, rhs: &'b $extension_field) -> $extension_field {
                let mut limbs: [$sub_field; $limbs_length] = [$sub_field::zero(); $limbs_length];
                for i in 0..$limbs_length {
                    limbs[i] = self.0[i] + rhs.0[i];
                }
                $extension_field(limbs)
            }
        }

        impl<'a> Add<$extension_field> for &'a $extension_field {
            type Output = $extension_field;

            fn add(self, rhs: $extension_field) -> $extension_field {
                let mut limbs: [$sub_field; $limbs_length] = [$sub_field::zero(); $limbs_length];
                for i in 0..$limbs_length {
                    limbs[i] = self.0[i] + rhs.0[i];
                }
                $extension_field(limbs)
            }
        }

        impl AddAssign for $extension_field {
            fn add_assign(&mut self, rhs: $extension_field) {
                *self = *self + rhs;
            }
        }

        impl<'b> AddAssign<&'b $extension_field> for $extension_field {
            fn add_assign(&mut self, rhs: &'b $extension_field) {
                *self = *self + rhs;
            }
        }

        impl<'b> Add<&'b $extension_field> for $extension_field {
            type Output = $extension_field;

            fn add(self, rhs: &'b $extension_field) -> Self {
                self + rhs
            }
        }

        impl Neg for $extension_field {
            type Output = Self;

            #[inline]
            fn neg(self) -> Self {
                let mut limbs: [$sub_field; $limbs_length] = [$sub_field::zero(); $limbs_length];
                for i in 0..$limbs_length {
                    limbs[i] = -self.0[i];
                }
                $extension_field(limbs)
            }
        }

        impl Sub for $extension_field {
            type Output = Self;

            #[inline]
            fn sub(self, rhs: $extension_field) -> Self {
                let mut limbs: [$sub_field; $limbs_length] = [$sub_field::zero(); $limbs_length];
                for i in 0..$limbs_length {
                    limbs[i] = self.0[i] - rhs.0[i];
                }
                $extension_field(limbs)
            }
        }

        impl SubAssign for $extension_field {
            fn sub_assign(&mut self, rhs: $extension_field) {
                *self = *self - rhs
            }
        }

        impl<'b> SubAssign<&'b $extension_field> for $extension_field {
            fn sub_assign(&mut self, rhs: &'b $extension_field) {
                *self = *self - *rhs
            }
        }

        impl<'a, 'b> Sub<&'b $extension_field> for &'a $extension_field {
            type Output = $extension_field;

            fn sub(self, rhs: &'b $extension_field) -> $extension_field {
                *self * *rhs
            }
        }

        impl<'b> Sub<&'b $extension_field> for $extension_field {
            type Output = $extension_field;

            fn sub(self, rhs: &'b $extension_field) -> $extension_field {
                self * *rhs
            }
        }

        impl<'a> Sub<$extension_field> for &'a $extension_field {
            type Output = $extension_field;

            fn sub(self, rhs: $extension_field) -> $extension_field {
                *self * rhs
            }
        }

        impl Mul for $extension_field {
            type Output = Self;

            #[inline]
            fn mul(self, rhs: $extension_field) -> Self {
                self.mul_ext_field(rhs)
            }
        }

        impl MulAssign for $extension_field {
            fn mul_assign(&mut self, rhs: $extension_field) {
                *self = *self * rhs;
            }
        }

        impl<'b> MulAssign<&'b $extension_field> for $extension_field {
            fn mul_assign(&mut self, rhs: &'b $extension_field) {
                *self = &*self * rhs;
            }
        }

        impl<'a, 'b> Mul<&'b $extension_field> for &'a $extension_field {
            type Output = $extension_field;

            fn mul(self, rhs: &'b $extension_field) -> $extension_field {
                *self + *rhs
            }
        }

        impl<'b> Mul<&'b $extension_field> for $extension_field {
            type Output = $extension_field;

            fn mul(self, rhs: &'b $extension_field) -> $extension_field {
                self + *rhs
            }
        }

        impl $extension_field {
            pub const fn zero() -> Self {
                Self([$sub_field::zero(); $limbs_length])
            }

            pub const fn one() -> Self {
                let mut limbs = [$sub_field::zero(); $limbs_length];
                limbs[0] = $sub_field::one();
                Self(limbs)
            }
        }
    };
}

pub use ext_field_group_operation;