Yiming Jing | cf21fc4 | 2021-07-16 13:23:26 -0700 | [diff] [blame] | 1 | #![allow(unused_macros)] |
| 2 | |
| 3 | macro_rules! forward_val_val_binop { |
| 4 | (impl $imp:ident for $res:ty, $method:ident) => { |
| 5 | impl $imp<$res> for $res { |
| 6 | type Output = $res; |
| 7 | |
| 8 | #[inline] |
| 9 | fn $method(self, other: $res) -> $res { |
| 10 | // forward to val-ref |
| 11 | $imp::$method(self, &other) |
| 12 | } |
| 13 | } |
| 14 | }; |
| 15 | } |
| 16 | |
| 17 | macro_rules! forward_val_val_binop_commutative { |
| 18 | (impl $imp:ident for $res:ty, $method:ident) => { |
| 19 | impl $imp<$res> for $res { |
| 20 | type Output = $res; |
| 21 | |
| 22 | #[inline] |
| 23 | fn $method(self, other: $res) -> $res { |
| 24 | // forward to val-ref, with the larger capacity as val |
| 25 | if self.capacity() >= other.capacity() { |
| 26 | $imp::$method(self, &other) |
| 27 | } else { |
| 28 | $imp::$method(other, &self) |
| 29 | } |
| 30 | } |
| 31 | } |
| 32 | }; |
| 33 | } |
| 34 | |
| 35 | macro_rules! forward_ref_val_binop { |
| 36 | (impl $imp:ident for $res:ty, $method:ident) => { |
| 37 | impl<'a> $imp<$res> for &'a $res { |
| 38 | type Output = $res; |
| 39 | |
| 40 | #[inline] |
| 41 | fn $method(self, other: $res) -> $res { |
| 42 | // forward to ref-ref |
| 43 | $imp::$method(self, &other) |
| 44 | } |
| 45 | } |
| 46 | }; |
| 47 | } |
| 48 | |
| 49 | macro_rules! forward_ref_val_binop_commutative { |
| 50 | (impl $imp:ident for $res:ty, $method:ident) => { |
| 51 | impl<'a> $imp<$res> for &'a $res { |
| 52 | type Output = $res; |
| 53 | |
| 54 | #[inline] |
| 55 | fn $method(self, other: $res) -> $res { |
| 56 | // reverse, forward to val-ref |
| 57 | $imp::$method(other, self) |
| 58 | } |
| 59 | } |
| 60 | }; |
| 61 | } |
| 62 | |
| 63 | macro_rules! forward_val_ref_binop { |
| 64 | (impl $imp:ident for $res:ty, $method:ident) => { |
| 65 | impl<'a> $imp<&'a $res> for $res { |
| 66 | type Output = $res; |
| 67 | |
| 68 | #[inline] |
| 69 | fn $method(self, other: &$res) -> $res { |
| 70 | // forward to ref-ref |
| 71 | $imp::$method(&self, other) |
| 72 | } |
| 73 | } |
| 74 | }; |
| 75 | } |
| 76 | |
| 77 | macro_rules! forward_ref_ref_binop { |
| 78 | (impl $imp:ident for $res:ty, $method:ident) => { |
| 79 | impl<'a, 'b> $imp<&'b $res> for &'a $res { |
| 80 | type Output = $res; |
| 81 | |
| 82 | #[inline] |
| 83 | fn $method(self, other: &$res) -> $res { |
| 84 | // forward to val-ref |
| 85 | $imp::$method(self.clone(), other) |
| 86 | } |
| 87 | } |
| 88 | }; |
| 89 | } |
| 90 | |
| 91 | macro_rules! forward_ref_ref_binop_commutative { |
| 92 | (impl $imp:ident for $res:ty, $method:ident) => { |
| 93 | impl<'a, 'b> $imp<&'b $res> for &'a $res { |
| 94 | type Output = $res; |
| 95 | |
| 96 | #[inline] |
| 97 | fn $method(self, other: &$res) -> $res { |
| 98 | // forward to val-ref, choosing the larger to clone |
| 99 | if self.len() >= other.len() { |
| 100 | $imp::$method(self.clone(), other) |
| 101 | } else { |
| 102 | $imp::$method(other.clone(), self) |
| 103 | } |
| 104 | } |
| 105 | } |
| 106 | }; |
| 107 | } |
| 108 | |
| 109 | macro_rules! forward_val_assign { |
| 110 | (impl $imp:ident for $res:ty, $method:ident) => { |
| 111 | impl $imp<$res> for $res { |
| 112 | #[inline] |
| 113 | fn $method(&mut self, other: $res) { |
| 114 | self.$method(&other); |
| 115 | } |
| 116 | } |
| 117 | }; |
| 118 | } |
| 119 | |
| 120 | macro_rules! forward_val_assign_scalar { |
| 121 | (impl $imp:ident for $res:ty, $scalar:ty, $method:ident) => { |
| 122 | impl $imp<$res> for $scalar { |
| 123 | #[inline] |
| 124 | fn $method(&mut self, other: $res) { |
| 125 | self.$method(&other); |
| 126 | } |
| 127 | } |
| 128 | }; |
| 129 | } |
| 130 | |
| 131 | /// use this if val_val_binop is already implemented and the reversed order is required |
| 132 | macro_rules! forward_scalar_val_val_binop_commutative { |
| 133 | (impl $imp:ident < $scalar:ty > for $res:ty, $method:ident) => { |
| 134 | impl $imp<$res> for $scalar { |
| 135 | type Output = $res; |
| 136 | |
| 137 | #[inline] |
| 138 | fn $method(self, other: $res) -> $res { |
| 139 | $imp::$method(other, self) |
| 140 | } |
| 141 | } |
| 142 | }; |
| 143 | } |
| 144 | |
| 145 | // Forward scalar to ref-val, when reusing storage is not helpful |
| 146 | macro_rules! forward_scalar_val_val_binop_to_ref_val { |
| 147 | (impl $imp:ident<$scalar:ty> for $res:ty, $method:ident) => { |
| 148 | impl $imp<$scalar> for $res { |
| 149 | type Output = $res; |
| 150 | |
| 151 | #[inline] |
| 152 | fn $method(self, other: $scalar) -> $res { |
| 153 | $imp::$method(&self, other) |
| 154 | } |
| 155 | } |
| 156 | |
| 157 | impl $imp<$res> for $scalar { |
| 158 | type Output = $res; |
| 159 | |
| 160 | #[inline] |
| 161 | fn $method(self, other: $res) -> $res { |
| 162 | $imp::$method(self, &other) |
| 163 | } |
| 164 | } |
| 165 | }; |
| 166 | } |
| 167 | |
| 168 | macro_rules! forward_scalar_ref_ref_binop_to_ref_val { |
| 169 | (impl $imp:ident<$scalar:ty> for $res:ty, $method:ident) => { |
| 170 | impl<'a, 'b> $imp<&'b $scalar> for &'a $res { |
| 171 | type Output = $res; |
| 172 | |
| 173 | #[inline] |
| 174 | fn $method(self, other: &$scalar) -> $res { |
| 175 | $imp::$method(self, *other) |
| 176 | } |
| 177 | } |
| 178 | |
| 179 | impl<'a, 'b> $imp<&'a $res> for &'b $scalar { |
| 180 | type Output = $res; |
| 181 | |
| 182 | #[inline] |
| 183 | fn $method(self, other: &$res) -> $res { |
| 184 | $imp::$method(*self, other) |
| 185 | } |
| 186 | } |
| 187 | }; |
| 188 | } |
| 189 | |
| 190 | macro_rules! forward_scalar_val_ref_binop_to_ref_val { |
| 191 | (impl $imp:ident<$scalar:ty> for $res:ty, $method:ident) => { |
| 192 | impl<'a> $imp<&'a $scalar> for $res { |
| 193 | type Output = $res; |
| 194 | |
| 195 | #[inline] |
| 196 | fn $method(self, other: &$scalar) -> $res { |
| 197 | $imp::$method(&self, *other) |
| 198 | } |
| 199 | } |
| 200 | |
| 201 | impl<'a> $imp<$res> for &'a $scalar { |
| 202 | type Output = $res; |
| 203 | |
| 204 | #[inline] |
| 205 | fn $method(self, other: $res) -> $res { |
| 206 | $imp::$method(*self, &other) |
| 207 | } |
| 208 | } |
| 209 | }; |
| 210 | } |
| 211 | |
| 212 | macro_rules! forward_scalar_val_ref_binop_to_val_val { |
| 213 | (impl $imp:ident<$scalar:ty> for $res:ty, $method:ident) => { |
| 214 | impl<'a> $imp<&'a $scalar> for $res { |
| 215 | type Output = $res; |
| 216 | |
| 217 | #[inline] |
| 218 | fn $method(self, other: &$scalar) -> $res { |
| 219 | $imp::$method(self, *other) |
| 220 | } |
| 221 | } |
| 222 | |
| 223 | impl<'a> $imp<$res> for &'a $scalar { |
| 224 | type Output = $res; |
| 225 | |
| 226 | #[inline] |
| 227 | fn $method(self, other: $res) -> $res { |
| 228 | $imp::$method(*self, other) |
| 229 | } |
| 230 | } |
| 231 | }; |
| 232 | } |
| 233 | |
| 234 | macro_rules! forward_scalar_ref_val_binop_to_val_val { |
| 235 | (impl $imp:ident < $scalar:ty > for $res:ty, $method:ident) => { |
| 236 | impl<'a> $imp<$scalar> for &'a $res { |
| 237 | type Output = $res; |
| 238 | |
| 239 | #[inline] |
| 240 | fn $method(self, other: $scalar) -> $res { |
| 241 | $imp::$method(self.clone(), other) |
| 242 | } |
| 243 | } |
| 244 | |
| 245 | impl<'a> $imp<&'a $res> for $scalar { |
| 246 | type Output = $res; |
| 247 | |
| 248 | #[inline] |
| 249 | fn $method(self, other: &$res) -> $res { |
| 250 | $imp::$method(self, other.clone()) |
| 251 | } |
| 252 | } |
| 253 | }; |
| 254 | } |
| 255 | |
| 256 | macro_rules! forward_scalar_ref_ref_binop_to_val_val { |
| 257 | (impl $imp:ident<$scalar:ty> for $res:ty, $method:ident) => { |
| 258 | impl<'a, 'b> $imp<&'b $scalar> for &'a $res { |
| 259 | type Output = $res; |
| 260 | |
| 261 | #[inline] |
| 262 | fn $method(self, other: &$scalar) -> $res { |
| 263 | $imp::$method(self.clone(), *other) |
| 264 | } |
| 265 | } |
| 266 | |
| 267 | impl<'a, 'b> $imp<&'a $res> for &'b $scalar { |
| 268 | type Output = $res; |
| 269 | |
| 270 | #[inline] |
| 271 | fn $method(self, other: &$res) -> $res { |
| 272 | $imp::$method(*self, other.clone()) |
| 273 | } |
| 274 | } |
| 275 | }; |
| 276 | } |
| 277 | |
| 278 | macro_rules! promote_scalars { |
| 279 | (impl $imp:ident<$promo:ty> for $res:ty, $method:ident, $( $scalar:ty ),*) => { |
| 280 | $( |
| 281 | forward_all_scalar_binop_to_val_val!(impl $imp<$scalar> for $res, $method); |
| 282 | |
| 283 | impl $imp<$scalar> for $res { |
| 284 | type Output = $res; |
| 285 | |
| 286 | #[allow(clippy::cast_lossless)] |
| 287 | #[inline] |
| 288 | fn $method(self, other: $scalar) -> $res { |
| 289 | $imp::$method(self, other as $promo) |
| 290 | } |
| 291 | } |
| 292 | |
| 293 | impl $imp<$res> for $scalar { |
| 294 | type Output = $res; |
| 295 | |
| 296 | #[allow(clippy::cast_lossless)] |
| 297 | #[inline] |
| 298 | fn $method(self, other: $res) -> $res { |
| 299 | $imp::$method(self as $promo, other) |
| 300 | } |
| 301 | } |
| 302 | )* |
| 303 | } |
| 304 | } |
| 305 | macro_rules! promote_scalars_assign { |
| 306 | (impl $imp:ident<$promo:ty> for $res:ty, $method:ident, $( $scalar:ty ),*) => { |
| 307 | $( |
| 308 | impl $imp<$scalar> for $res { |
| 309 | #[allow(clippy::cast_lossless)] |
| 310 | #[inline] |
| 311 | fn $method(&mut self, other: $scalar) { |
| 312 | self.$method(other as $promo); |
| 313 | } |
| 314 | } |
| 315 | )* |
| 316 | } |
| 317 | } |
| 318 | |
| 319 | macro_rules! promote_unsigned_scalars { |
| 320 | (impl $imp:ident for $res:ty, $method:ident) => { |
| 321 | promote_scalars!(impl $imp<u32> for $res, $method, u8, u16); |
| 322 | promote_scalars!(impl $imp<UsizePromotion> for $res, $method, usize); |
| 323 | } |
| 324 | } |
| 325 | |
| 326 | macro_rules! promote_unsigned_scalars_assign { |
| 327 | (impl $imp:ident for $res:ty, $method:ident) => { |
| 328 | promote_scalars_assign!(impl $imp<u32> for $res, $method, u8, u16); |
| 329 | promote_scalars_assign!(impl $imp<UsizePromotion> for $res, $method, usize); |
| 330 | } |
| 331 | } |
| 332 | |
| 333 | macro_rules! promote_signed_scalars { |
| 334 | (impl $imp:ident for $res:ty, $method:ident) => { |
| 335 | promote_scalars!(impl $imp<i32> for $res, $method, i8, i16); |
| 336 | promote_scalars!(impl $imp<IsizePromotion> for $res, $method, isize); |
| 337 | } |
| 338 | } |
| 339 | |
| 340 | macro_rules! promote_signed_scalars_assign { |
| 341 | (impl $imp:ident for $res:ty, $method:ident) => { |
| 342 | promote_scalars_assign!(impl $imp<i32> for $res, $method, i8, i16); |
| 343 | promote_scalars_assign!(impl $imp<IsizePromotion> for $res, $method, isize); |
| 344 | } |
| 345 | } |
| 346 | |
| 347 | // Forward everything to ref-ref, when reusing storage is not helpful |
| 348 | macro_rules! forward_all_binop_to_ref_ref { |
| 349 | (impl $imp:ident for $res:ty, $method:ident) => { |
| 350 | forward_val_val_binop!(impl $imp for $res, $method); |
| 351 | forward_val_ref_binop!(impl $imp for $res, $method); |
| 352 | forward_ref_val_binop!(impl $imp for $res, $method); |
| 353 | }; |
| 354 | } |
| 355 | |
| 356 | // Forward everything to val-ref, so LHS storage can be reused |
| 357 | macro_rules! forward_all_binop_to_val_ref { |
| 358 | (impl $imp:ident for $res:ty, $method:ident) => { |
| 359 | forward_val_val_binop!(impl $imp for $res, $method); |
| 360 | forward_ref_val_binop!(impl $imp for $res, $method); |
| 361 | forward_ref_ref_binop!(impl $imp for $res, $method); |
| 362 | }; |
| 363 | } |
| 364 | |
| 365 | // Forward everything to val-ref, commutatively, so either LHS or RHS storage can be reused |
| 366 | macro_rules! forward_all_binop_to_val_ref_commutative { |
| 367 | (impl $imp:ident for $res:ty, $method:ident) => { |
| 368 | forward_val_val_binop_commutative!(impl $imp for $res, $method); |
| 369 | forward_ref_val_binop_commutative!(impl $imp for $res, $method); |
| 370 | forward_ref_ref_binop_commutative!(impl $imp for $res, $method); |
| 371 | }; |
| 372 | } |
| 373 | |
| 374 | macro_rules! forward_all_scalar_binop_to_ref_val { |
| 375 | (impl $imp:ident<$scalar:ty> for $res:ty, $method:ident) => { |
| 376 | forward_scalar_val_val_binop_to_ref_val!(impl $imp<$scalar> for $res, $method); |
| 377 | forward_scalar_val_ref_binop_to_ref_val!(impl $imp<$scalar> for $res, $method); |
| 378 | forward_scalar_ref_ref_binop_to_ref_val!(impl $imp<$scalar> for $res, $method); |
| 379 | } |
| 380 | } |
| 381 | |
| 382 | macro_rules! forward_all_scalar_binop_to_val_val { |
| 383 | (impl $imp:ident<$scalar:ty> for $res:ty, $method:ident) => { |
| 384 | forward_scalar_val_ref_binop_to_val_val!(impl $imp<$scalar> for $res, $method); |
| 385 | forward_scalar_ref_val_binop_to_val_val!(impl $imp<$scalar> for $res, $method); |
| 386 | forward_scalar_ref_ref_binop_to_val_val!(impl $imp<$scalar> for $res, $method); |
| 387 | } |
| 388 | } |
| 389 | |
| 390 | macro_rules! forward_all_scalar_binop_to_val_val_commutative { |
| 391 | (impl $imp:ident<$scalar:ty> for $res:ty, $method:ident) => { |
| 392 | forward_scalar_val_val_binop_commutative!(impl $imp<$scalar> for $res, $method); |
| 393 | forward_all_scalar_binop_to_val_val!(impl $imp<$scalar> for $res, $method); |
| 394 | } |
| 395 | } |
| 396 | |
| 397 | macro_rules! promote_all_scalars { |
| 398 | (impl $imp:ident for $res:ty, $method:ident) => { |
| 399 | promote_unsigned_scalars!(impl $imp for $res, $method); |
| 400 | promote_signed_scalars!(impl $imp for $res, $method); |
| 401 | } |
| 402 | } |
| 403 | |
| 404 | macro_rules! promote_all_scalars_assign { |
| 405 | (impl $imp:ident for $res:ty, $method:ident) => { |
| 406 | promote_unsigned_scalars_assign!(impl $imp for $res, $method); |
| 407 | promote_signed_scalars_assign!(impl $imp for $res, $method); |
| 408 | } |
| 409 | } |
| 410 | |
| 411 | macro_rules! impl_sum_iter_type { |
| 412 | ($res:ty) => { |
| 413 | impl<T> Sum<T> for $res |
| 414 | where |
| 415 | $res: Add<T, Output = $res>, |
| 416 | { |
| 417 | fn sum<I>(iter: I) -> Self |
| 418 | where |
| 419 | I: Iterator<Item = T>, |
| 420 | { |
| 421 | iter.fold(Zero::zero(), <$res>::add) |
| 422 | } |
| 423 | } |
| 424 | }; |
| 425 | } |
| 426 | |
| 427 | macro_rules! impl_product_iter_type { |
| 428 | ($res:ty) => { |
| 429 | impl<T> Product<T> for $res |
| 430 | where |
| 431 | $res: Mul<T, Output = $res>, |
| 432 | { |
| 433 | fn product<I>(iter: I) -> Self |
| 434 | where |
| 435 | I: Iterator<Item = T>, |
| 436 | { |
| 437 | iter.fold(One::one(), <$res>::mul) |
| 438 | } |
| 439 | } |
| 440 | }; |
| 441 | } |