| 1 | /** |
| 2 | * Copyright (c) Meta Platforms, Inc. and affiliates. |
| 3 | * |
| 4 | * This source code is licensed under the MIT license found in the |
| 5 | * LICENSE file in the root directory of this source tree. |
| 6 | */ |
| 7 | |
| 8 | import {EvaluatorResult, doEval} from './evaluator'; |
| 9 | |
| 10 | export type SproutResult = |
| 11 | | {kind: 'success'; value: string} |
| 12 | | {kind: 'invalid'; value: string}; |
| 13 | |
| 14 | function stringify(result: EvaluatorResult): string { |
| 15 | return `(kind: ${result.kind}) ${result.value}${ |
| 16 | result.logs.length > 0 ? `\nlogs: [${result.logs.toString()}]` : '' |
| 17 | }`; |
| 18 | } |
| 19 | function makeError(description: string, value: string): SproutResult { |
| 20 | return { |
| 21 | kind: 'invalid', |
| 22 | value: description + '\n' + value, |
| 23 | }; |
| 24 | } |
| 25 | function logsEqual(a: Array<string>, b: Array<string>) { |
| 26 | if (a.length !== b.length) { |
| 27 | return false; |
| 28 | } |
| 29 | return a.every((val, idx) => val === b[idx]); |
| 30 | } |
| 31 | export function runSprout( |
| 32 | originalCode: string, |
| 33 | forgetCode: string, |
| 34 | ): SproutResult { |
| 35 | let forgetResult; |
| 36 | try { |
| 37 | (globalThis as any).__SNAP_EVALUATOR_MODE = 'forget'; |
| 38 | forgetResult = doEval(forgetCode); |
| 39 | } catch (e) { |
| 40 | throw e; |
| 41 | } finally { |
| 42 | (globalThis as any).__SNAP_EVALUATOR_MODE = undefined; |
| 43 | } |
| 44 | if (forgetResult.kind === 'UnexpectedError') { |
| 45 | return makeError('Unexpected error in Forget runner', forgetResult.value); |
| 46 | } |
| 47 | if (originalCode.indexOf('@disableNonForgetInSprout') === -1) { |
| 48 | const nonForgetResult = doEval(originalCode); |
| 49 | |
| 50 | if (nonForgetResult.kind === 'UnexpectedError') { |
| 51 | return makeError( |
| 52 | 'Unexpected error in non-forget runner', |
| 53 | nonForgetResult.value, |
| 54 | ); |
| 55 | } else if ( |
| 56 | forgetResult.kind !== nonForgetResult.kind || |
| 57 | forgetResult.value !== nonForgetResult.value || |
| 58 | !logsEqual(forgetResult.logs, nonForgetResult.logs) |
| 59 | ) { |
| 60 | return makeError( |
| 61 | 'Found differences in evaluator results', |
| 62 | `Non-forget (expected): |
| 63 | ${stringify(nonForgetResult)} |
| 64 | Forget: |
| 65 | ${stringify(forgetResult)} |
| 66 | `, |
| 67 | ); |
| 68 | } |
| 69 | } |
| 70 | return { |
| 71 | kind: 'success', |
| 72 | value: stringify(forgetResult), |
| 73 | }; |
| 74 | } |