| 1 | import type { NativeReviewDiffRow } from "../../diffs/nativeReviewDiffSurface"; |
| 2 | |
| 3 | export type GuideDiffFocus = { |
| 4 | readonly side: "old" | "new"; |
| 5 | readonly start: number; |
| 6 | readonly end: number; |
| 7 | }; |
| 8 | |
| 9 | /** Match original diff coordinates, including deletions and renamed files. */ |
| 10 | export function guideFocusedRows( |
| 11 | rows: readonly NativeReviewDiffRow[], |
| 12 | fileId: string | undefined, |
| 13 | focus: GuideDiffFocus | undefined, |
| 14 | ) { |
| 15 | if (!fileId || !focus) return []; |
| 16 | return rows.filter((row) => { |
| 17 | const line = focus.side === "old" ? row.oldLineNumber : row.newLineNumber; |
| 18 | return ( |
| 19 | row.fileId === fileId && |
| 20 | row.kind === "line" && |
| 21 | line != null && |
| 22 | line >= focus.start && |
| 23 | line <= focus.end |
| 24 | ); |
| 25 | }); |
| 26 | } |