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| 1 | <?php |
| 2 | |
| 3 | declare(strict_types=1); |
| 4 | |
| 5 | namespace Celema\Verba\Tool; |
| 6 | |
| 7 | /** |
| 8 | * Runs a domain's scanners, keeps the messages that belong to it, and merges |
| 9 | * duplicates by context and id (unioning locations, preferring a plural form |
| 10 | * when any call site supplied one). |
| 11 | * |
| 12 | * @api |
| 13 | */ |
| 14 | final class Extractor |
| 15 | { |
| 16 | public function __construct( |
| 17 | private readonly Domain $domain, |
| 18 | ) {} |
| 19 | |
| 20 | /** |
| 21 | * @return array{ |
| 22 | * messages: array<string, Message>, |
| 23 | * contexts: array<string, array<string, Message>>, |
| 24 | * warnings: list<string>, |
| 25 | * } |
| 26 | */ |
| 27 | public function extract(): array |
| 28 | { |
| 29 | $merged = []; |
| 30 | $contexts = []; |
| 31 | $warnings = []; |
| 32 | |
| 33 | foreach ($this->domain->scanners as $scanner) { |
| 34 | foreach ($scanner->scan() as $message) { |
| 35 | if (!$this->domain->owns($message->domain)) { |
| 36 | continue; |
| 37 | } |
| 38 | |
| 39 | if ($message->context === null) { |
| 40 | $existing = $merged[$message->id] ?? null; |
| 41 | $merged[$message->id] = $this->merge($existing, $message, $warnings); |
| 42 | } else { |
| 43 | $existing = $contexts[$message->context][$message->id] ?? null; |
| 44 | $contexts[$message->context][$message->id] = $this->merge( |
| 45 | $existing, |
| 46 | $message, |
| 47 | $warnings, |
| 48 | ); |
| 49 | } |
| 50 | } |
| 51 | |
| 52 | foreach ($scanner->warnings() as $warning) { |
| 53 | $warnings[] = $warning; |
| 54 | } |
| 55 | } |
| 56 | |
| 57 | ksort($merged, SORT_STRING); |
| 58 | ksort($contexts, SORT_STRING); |
| 59 | |
| 60 | foreach ($contexts as &$messages) { |
| 61 | ksort($messages, SORT_STRING); |
| 62 | } |
| 63 | |
| 64 | unset($messages); |
| 65 | |
| 66 | return ['messages' => $merged, 'contexts' => $contexts, 'warnings' => $warnings]; |
| 67 | } |
| 68 | |
| 69 | /** |
| 70 | * @param list<string> $warnings |
| 71 | */ |
| 72 | private function merge(?Message $existing, Message $next, array &$warnings): Message |
| 73 | { |
| 74 | $warning = $this->conflict($existing, $next); |
| 75 | |
| 76 | if ($warning !== null) { |
| 77 | $warnings[] = $warning; |
| 78 | } |
| 79 | |
| 80 | return $this->fold($existing, $next); |
| 81 | } |
| 82 | |
| 83 | private function conflict(?Message $existing, Message $next): ?string |
| 84 | { |
| 85 | if ($existing === null || $existing->plural === $next->plural) { |
| 86 | return null; |
| 87 | } |
| 88 | |
| 89 | $location = $next->locations[0] ?? 'unknown location'; |
| 90 | $id = "message id '{$next->id}'"; |
| 91 | |
| 92 | if ($next->context !== null) { |
| 93 | $id .= " in context '{$next->context}'"; |
| 94 | } |
| 95 | |
| 96 | if ($existing->plural === null || $next->plural === null) { |
| 97 | return "Mixed singular and plural calls for {$id} at {$location}"; |
| 98 | } |
| 99 | |
| 100 | return "Conflicting plural forms for {$id} at {$location}"; |
| 101 | } |
| 102 | |
| 103 | private function fold(?Message $existing, Message $next): Message |
| 104 | { |
| 105 | if ($existing === null) { |
| 106 | return new Message(null, $next->id, $next->plural, $next->locations, $next->context); |
| 107 | } |
| 108 | |
| 109 | return new Message( |
| 110 | null, |
| 111 | $next->id, |
| 112 | $existing->plural ?? $next->plural, |
| 113 | [...$existing->locations, ...$next->locations], |
| 114 | $next->context, |
| 115 | ); |
| 116 | } |
| 117 | } |