( expr: BasicExpression<boolean> | undefined | null, )
| 325 | * ``` |
| 326 | */ |
| 327 | export function extractSimpleComparisons( |
| 328 | expr: BasicExpression<boolean> | undefined | null, |
| 329 | ): Array<SimpleComparison> { |
| 330 | if (!expr) return [] |
| 331 | |
| 332 | const comparisons: Array<SimpleComparison> = [] |
| 333 | |
| 334 | function extract(e: BasicExpression): void { |
| 335 | if (e.type === `func`) { |
| 336 | // Handle AND - recurse into both sides |
| 337 | if (e.name === `and`) { |
| 338 | e.args.forEach((arg: BasicExpression) => extract(arg)) |
| 339 | return |
| 340 | } |
| 341 | |
| 342 | // Handle NOT - recurse into argument and prefix operator with 'not_' |
| 343 | if (e.name === `not`) { |
| 344 | const [arg] = e.args |
| 345 | if (!arg || arg.type !== `func`) { |
| 346 | throw new Error( |
| 347 | `extractSimpleComparisons requires a comparison or null check inside 'not' operator.`, |
| 348 | ) |
| 349 | } |
| 350 | |
| 351 | // Handle NOT with null/undefined checks |
| 352 | const nullCheckOps = [`isNull`, `isUndefined`] |
| 353 | if (nullCheckOps.includes(arg.name)) { |
| 354 | const [fieldArg] = arg.args |
| 355 | const field = fieldArg?.type === `ref` ? fieldArg.path : null |
| 356 | |
| 357 | if (field) { |
| 358 | comparisons.push({ |
| 359 | field, |
| 360 | operator: `not_${arg.name}`, |
| 361 | // No value for null/undefined checks |
| 362 | }) |
| 363 | } else { |
| 364 | throw new Error( |
| 365 | `extractSimpleComparisons requires a field reference for '${arg.name}' operator.`, |
| 366 | ) |
| 367 | } |
| 368 | return |
| 369 | } |
| 370 | |
| 371 | // Handle NOT with comparison operators |
| 372 | const comparisonOps = [`eq`, `gt`, `gte`, `lt`, `lte`, `in`] |
| 373 | if (comparisonOps.includes(arg.name)) { |
| 374 | const [leftArg, rightArg] = arg.args |
| 375 | const field = leftArg?.type === `ref` ? leftArg.path : null |
| 376 | const value = rightArg?.type === `val` ? rightArg.value : null |
| 377 | |
| 378 | if (field && value !== undefined) { |
| 379 | comparisons.push({ |
| 380 | field, |
| 381 | operator: `not_${arg.name}`, |
| 382 | value, |
| 383 | }) |
| 384 | } else { |
no test coverage detected