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Refactor Message class to hold all translations (#115506)
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* init

* more fixing

* finish

* fix lint

* address pr comments

* redo checks
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@thkim1011
thkim1011 committed Nov 28, 2022
1 parent 4a5dd9c commit 215f637
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Showing 3 changed files with 193 additions and 213 deletions.
133 changes: 66 additions & 67 deletions packages/flutter_tools/lib/src/localizations/gen_l10n.dart
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Original file line number Diff line number Diff line change
Expand Up @@ -92,22 +92,22 @@ String _syntheticL10nPackagePath(FileSystem fileSystem) => fileSystem.path.join(
// TODO(thkim1011): Let's store the output of this function in the Message class, so that we don't
// recompute this. See https://github.com/flutter/flutter/issues/112709
List<String> generateMethodParameters(Message message) {
return message.placeholders.map((Placeholder placeholder) {
return message.placeholders.values.map((Placeholder placeholder) {
return '${placeholder.type} ${placeholder.name}';
}).toList();
}

// Similar to above, but is used for passing arguments into helper functions.
List<String> generateMethodArguments(Message message) {
return message.placeholders.map((Placeholder placeholder) => placeholder.name).toList();
return message.placeholders.values.map((Placeholder placeholder) => placeholder.name).toList();
}

String generateDateFormattingLogic(Message message) {
if (message.placeholders.isEmpty || !message.placeholdersRequireFormatting) {
return '@(none)';
}

final Iterable<String> formatStatements = message.placeholders
final Iterable<String> formatStatements = message.placeholders.values
.where((Placeholder placeholder) => placeholder.requiresDateFormatting)
.map((Placeholder placeholder) {
final String? placeholderFormat = placeholder.format;
Expand Down Expand Up @@ -150,7 +150,7 @@ String generateNumberFormattingLogic(Message message) {
return '@(none)';
}

final Iterable<String> formatStatements = message.placeholders
final Iterable<String> formatStatements = message.placeholders.values
.where((Placeholder placeholder) => placeholder.requiresNumFormatting)
.map((Placeholder placeholder) {
final String? placeholderFormat = placeholder.format;
Expand Down Expand Up @@ -502,8 +502,10 @@ class LocalizationsGenerator {
final FileSystem _fs;
Iterable<Message> _allMessages = <Message>[];
late final AppResourceBundleCollection _allBundles = AppResourceBundleCollection(inputDirectory);

late final AppResourceBundle _templateBundle = AppResourceBundle(templateArbFile);
late final Map<LocaleInfo, String> _inputFileNames = Map<LocaleInfo, String>.fromEntries(
_allBundles.bundles.map((AppResourceBundle bundle) => MapEntry<LocaleInfo, String>(bundle.locale, bundle.file.basename))
);
late final LocaleInfo _templateArbLocale = _templateBundle.locale;

@visibleForTesting
Expand Down Expand Up @@ -843,7 +845,7 @@ class LocalizationsGenerator {
// files in inputDirectory. Also initialized: supportedLocales.
void loadResources() {
_allMessages = _templateBundle.resourceIds.map((String id) => Message(
_templateBundle.resources, id, areResourceAttributesRequired,
_templateBundle, _allBundles, id, areResourceAttributesRequired,
));
for (final String resourceId in _templateBundle.resourceIds) {
if (!_isValidGetterAndMethodName(resourceId)) {
Expand Down Expand Up @@ -891,21 +893,19 @@ class LocalizationsGenerator {
String className,
String fileName,
String header,
AppResourceBundle bundle,
AppResourceBundle templateBundle,
Iterable<Message> messages,
final LocaleInfo locale,
) {
final LocaleInfo locale = bundle.locale;

final Iterable<String> methods = messages.map((Message message) {
if (bundle.translationFor(message) == null) {
final Iterable<String> methods = _allMessages.map((Message message) {
if (message.messages[locale] == null) {
_addUnimplementedMessage(locale, message.resourceId);
return _generateMethod(
message,
_templateArbLocale,
);
}

return _generateMethod(
message,
bundle.file.basename,
bundle.translationFor(message) ?? templateBundle.translationFor(message)!,
locale,
);
});

Expand All @@ -923,20 +923,19 @@ class LocalizationsGenerator {
String _generateSubclass(
String className,
AppResourceBundle bundle,
Iterable<Message> messages,
) {
final LocaleInfo locale = bundle.locale;
final String baseClassName = '$className${LocaleInfo.fromString(locale.languageCode).camelCase()}';

messages
.where((Message message) => bundle.translationFor(message) == null)
_allMessages
.where((Message message) => message.messages[locale] == null)
.forEach((Message message) {
_addUnimplementedMessage(locale, message.resourceId);
});

final Iterable<String> methods = messages
.where((Message message) => bundle.translationFor(message) != null)
.map((Message message) => _generateMethod(message, bundle.file.basename, bundle.translationFor(message)!));
final Iterable<String> methods = _allMessages
.where((Message message) => message.messages[locale] != null)
.map((Message message) => _generateMethod(message, locale));

return subclassTemplate
.replaceAll('@(language)', describeLocale(locale.toString()))
Expand Down Expand Up @@ -1016,9 +1015,7 @@ class LocalizationsGenerator {
className,
outputFileName,
header,
_allBundles.bundleFor(locale)!,
_allBundles.bundleFor(_templateArbLocale)!,
_allMessages,
locale,
);

// Every locale for the language except the base class.
Expand All @@ -1029,7 +1026,6 @@ class LocalizationsGenerator {
return _generateSubclass(
className,
_allBundles.bundleFor(locale)!,
_allMessages,
);
});

Expand Down Expand Up @@ -1079,13 +1075,14 @@ class LocalizationsGenerator {
.replaceAll('\n\n\n', '\n\n');
}

String _generateMethod(Message message, String filename, String translationForMessage) {
String _generateMethod(Message message, LocaleInfo locale) {
// Determine if we must import intl for date or number formatting.
if (message.placeholdersRequireFormatting) {
requiresIntlImport = true;
}

final Node node = Parser(message.resourceId, filename, translationForMessage).parse();
final String translationForMessage = message.messages[locale]!;
final Node node = message.parsedMessages[locale]!;
// If parse tree is only a string, then return a getter method.
if (node.children.every((Node child) => child.type == ST.string)) {
// Use the parsed translation to handle escaping with the same behavior.
Expand Down Expand Up @@ -1150,17 +1147,16 @@ class LocalizationsGenerator {
assert(node.children[1].type == ST.identifier);
final Node identifier = node.children[1];
// Check that placeholders exist.
// TODO(thkim1011): Make message.placeholders a map so that we don't need to do linear time search.
// See https://github.com/flutter/flutter/issues/112709
final Placeholder placeholder = message.placeholders.firstWhere(
(Placeholder placeholder) => placeholder.name == identifier.value,
orElse: () {
throw L10nException('''
Make sure that the specified placeholder is defined in your arb file.
$translationForMessage
${Parser.indentForError(identifier.positionInMessage)}''');
}
);
final Placeholder? placeholder = message.placeholders[identifier.value];
if (placeholder == null) {
throw L10nParserException(
'Make sure that the specified placeholder is defined in your arb file.',
_inputFileNames[locale]!,
message.resourceId,
translationForMessage,
identifier.positionInMessage,
);
}
dependentPlaceholders.add(placeholder);
return HelperMethod(dependentPlaceholders, placeholder: placeholder);

Expand All @@ -1175,25 +1171,27 @@ ${Parser.indentForError(identifier.positionInMessage)}''');
final Node identifier = node.children[1];
final Node pluralParts = node.children[5];

// Check that identifier exists and is of type int or num.
final Placeholder placeholder = message.placeholders.firstWhere(
(Placeholder placeholder) => placeholder.name == identifier.value,
orElse: () {
throw L10nException('''
Make sure that the specified plural placeholder is defined in your arb file.
$translationForMessage
${List<String>.filled(identifier.positionInMessage, ' ').join()}^''');
}
);
// Check that placeholders exist and is of type int or num.
final Placeholder? placeholder = message.placeholders[identifier.value];
if (placeholder == null) {
throw L10nParserException(
'Make sure that the specified placeholder is defined in your arb file.',
_inputFileNames[locale]!,
message.resourceId,
translationForMessage,
identifier.positionInMessage,
);
}
if (placeholder.type != 'num' && placeholder.type != 'int') {
throw L10nParserException(
'The specified placeholder must be of type int or num.',
_inputFileNames[locale]!,
message.resourceId,
translationForMessage,
identifier.positionInMessage,
);
}
dependentPlaceholders.add(placeholder);
// TODO(thkim1011): Uncomment the following lines after Message refactor.
// See https://github.com/flutter/flutter/issues/112709.
// if (placeholder.type != 'num' && placeholder.type != 'int') {
// throw L10nException('''
// The specified placeholder must be of type int or num.
// $translationForMessage
// ${List<String>.filled(identifier.positionInMessage, ' ').join()}^''');
// }

for (final Node pluralPart in pluralParts.children.reversed) {
String pluralCase;
Expand Down Expand Up @@ -1239,16 +1237,17 @@ ${Parser.indentForError(pluralPart.positionInMessage)}
assert(node.children[5].type == ST.selectParts);

final Node identifier = node.children[1];
// Check that identifier exists
final Placeholder placeholder = message.placeholders.firstWhere(
(Placeholder placeholder) => placeholder.name == identifier.value,
orElse: () {
throw L10nException('''
Make sure that the specified select placeholder is defined in your arb file.
$translationForMessage
${Parser.indentForError(identifier.positionInMessage)}''');
}
);
// Check that placeholders exist.
final Placeholder? placeholder = message.placeholders[identifier.value];
if (placeholder == null) {
throw L10nParserException(
'Make sure that the specified placeholder is defined in your arb file.',
_inputFileNames[locale]!,
message.resourceId,
translationForMessage,
identifier.positionInMessage,
);
}
dependentPlaceholders.add(placeholder);
final List<String> selectLogicArgs = <String>[];
final Node selectParts = node.children[5];
Expand Down
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