| // Copyright 2013 The Flutter Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| import 'dart:io'; |
| |
| import 'ast.dart'; |
| import 'functional.dart'; |
| import 'generator.dart'; |
| import 'generator_tools.dart'; |
| import 'pigeon_lib.dart' |
| show Error, PigeonOptions, TaskQueueType, lineReader, openSink; |
| |
| /// Documentation open symbol. |
| const String _docCommentPrefix = '/**'; |
| |
| /// Documentation continuation symbol. |
| const String _docCommentContinuation = ' *'; |
| |
| /// Documentation close symbol. |
| const String _docCommentSuffix = ' */'; |
| |
| /// Documentation comment spec. |
| const DocumentCommentSpecification _docCommentSpec = |
| DocumentCommentSpecification( |
| _docCommentPrefix, |
| closeCommentToken: _docCommentSuffix, |
| blockContinuationToken: _docCommentContinuation, |
| ); |
| |
| /// Options that control how Kotlin code will be generated. |
| class KotlinOptions { |
| /// Creates a [KotlinOptions] object |
| const KotlinOptions({ |
| this.package, |
| this.copyrightHeader, |
| }); |
| |
| /// The package where the generated class will live. |
| final String? package; |
| |
| /// A copyright header that will get prepended to generated code. |
| final Iterable<String>? copyrightHeader; |
| |
| /// Creates a [KotlinOptions] from a Map representation where: |
| /// `x = KotlinOptions.fromMap(x.toMap())`. |
| static KotlinOptions fromMap(Map<String, Object> map) { |
| return KotlinOptions( |
| package: map['package'] as String?, |
| copyrightHeader: map['copyrightHeader'] as Iterable<String>?, |
| ); |
| } |
| |
| /// Converts a [KotlinOptions] to a Map representation where: |
| /// `x = KotlinOptions.fromMap(x.toMap())`. |
| Map<String, Object> toMap() { |
| final Map<String, Object> result = <String, Object>{ |
| if (package != null) 'package': package!, |
| if (copyrightHeader != null) 'copyrightHeader': copyrightHeader!, |
| }; |
| return result; |
| } |
| |
| /// Overrides any non-null parameters from [options] into this to make a new |
| /// [KotlinOptions]. |
| KotlinOptions merge(KotlinOptions options) { |
| return KotlinOptions.fromMap(mergeMaps(toMap(), options.toMap())); |
| } |
| } |
| |
| /// A [Generator] that generates Kotlin source code. |
| class KotlinGenerator implements Generator { |
| /// Constructor for [KotlinGenerator]. |
| const KotlinGenerator(); |
| |
| @override |
| void generate(StringSink sink, PigeonOptions options, Root root) { |
| KotlinOptions kotlinOptions = |
| options.kotlinOptions ?? const KotlinOptions(); |
| kotlinOptions = kotlinOptions.merge(KotlinOptions( |
| copyrightHeader: options.copyrightHeader != null |
| ? lineReader(options.copyrightHeader!) |
| : null)); |
| generateKotlin(kotlinOptions, root, sink); |
| } |
| |
| @override |
| IOSink? shouldGenerate(PigeonOptions options) => openSink(options.kotlinOut); |
| |
| @override |
| List<Error> validate(PigeonOptions options, Root root) => <Error>[]; |
| } |
| |
| /// Calculates the name of the codec that will be generated for [api]. |
| String _getCodecName(Api api) => '${api.name}Codec'; |
| |
| /// Writes the codec class that will be used by [api]. |
| /// Example: |
| /// private static class FooCodec extends StandardMessageCodec {...} |
| void _writeCodec(Indent indent, Api api, Root root) { |
| assert(getCodecClasses(api, root).isNotEmpty); |
| final Iterable<EnumeratedClass> codecClasses = getCodecClasses(api, root); |
| final String codecName = _getCodecName(api); |
| indent.writeln('@Suppress("UNCHECKED_CAST")'); |
| indent.write('private object $codecName : StandardMessageCodec() '); |
| indent.scoped('{', '}', () { |
| indent.write( |
| 'override fun readValueOfType(type: Byte, buffer: ByteBuffer): Any? '); |
| indent.scoped('{', '}', () { |
| indent.write('return when (type) '); |
| indent.scoped('{', '}', () { |
| for (final EnumeratedClass customClass in codecClasses) { |
| indent.write('${customClass.enumeration}.toByte() -> '); |
| indent.scoped('{', '}', () { |
| indent.write('return (readValue(buffer) as? List<Any?>)?.let '); |
| indent.scoped('{', '}', () { |
| indent.writeln('${customClass.name}.fromList(it)'); |
| }); |
| }); |
| } |
| indent.writeln('else -> super.readValueOfType(type, buffer)'); |
| }); |
| }); |
| |
| indent.write( |
| 'override fun writeValue(stream: ByteArrayOutputStream, value: Any?) '); |
| indent.writeScoped('{', '}', () { |
| indent.write('when (value) '); |
| indent.scoped('{', '}', () { |
| for (final EnumeratedClass customClass in codecClasses) { |
| indent.write('is ${customClass.name} -> '); |
| indent.scoped('{', '}', () { |
| indent.writeln('stream.write(${customClass.enumeration})'); |
| indent.writeln('writeValue(stream, value.toList())'); |
| }); |
| } |
| indent.writeln('else -> super.writeValue(stream, value)'); |
| }); |
| }); |
| }); |
| } |
| |
| /// Write the kotlin code that represents a host [Api], [api]. |
| /// Example: |
| /// interface Foo { |
| /// Int add(x: Int, y: Int); |
| /// companion object { |
| /// fun setUp(binaryMessenger: BinaryMessenger, api: Api) {...} |
| /// } |
| /// } |
| void _writeHostApi(Indent indent, Api api, Root root) { |
| assert(api.location == ApiLocation.host); |
| |
| final String apiName = api.name; |
| |
| final bool isCustomCodec = getCodecClasses(api, root).isNotEmpty; |
| |
| const List<String> generatedMessages = <String>[ |
| ' Generated interface from Pigeon that represents a handler of messages from Flutter.' |
| ]; |
| addDocumentationComments(indent, api.documentationComments, _docCommentSpec, |
| generatorComments: generatedMessages); |
| |
| indent.write('interface $apiName '); |
| indent.scoped('{', '}', () { |
| for (final Method method in api.methods) { |
| final List<String> argSignature = <String>[]; |
| if (method.arguments.isNotEmpty) { |
| final Iterable<String> argTypes = method.arguments |
| .map((NamedType e) => _nullsafeKotlinTypeForDartType(e.type)); |
| final Iterable<String> argNames = |
| method.arguments.map((NamedType e) => e.name); |
| argSignature |
| .addAll(map2(argTypes, argNames, (String argType, String argName) { |
| return '$argName: $argType'; |
| })); |
| } |
| |
| final String returnType = method.returnType.isVoid |
| ? '' |
| : _nullsafeKotlinTypeForDartType(method.returnType); |
| |
| addDocumentationComments( |
| indent, method.documentationComments, _docCommentSpec); |
| |
| if (method.isAsynchronous) { |
| argSignature.add('callback: ($returnType) -> Unit'); |
| indent.writeln('fun ${method.name}(${argSignature.join(', ')})'); |
| } else if (method.returnType.isVoid) { |
| indent.writeln('fun ${method.name}(${argSignature.join(', ')})'); |
| } else { |
| indent.writeln( |
| 'fun ${method.name}(${argSignature.join(', ')}): $returnType'); |
| } |
| } |
| |
| indent.addln(''); |
| indent.write('companion object '); |
| indent.scoped('{', '}', () { |
| indent.writeln('/** The codec used by $apiName. */'); |
| indent.write('val codec: MessageCodec<Any?> by lazy '); |
| indent.scoped('{', '}', () { |
| if (isCustomCodec) { |
| indent.writeln(_getCodecName(api)); |
| } else { |
| indent.writeln('StandardMessageCodec()'); |
| } |
| }); |
| indent.writeln( |
| '/** Sets up an instance of `$apiName` to handle messages through the `binaryMessenger`. */'); |
| indent.writeln('@Suppress("UNCHECKED_CAST")'); |
| indent.write( |
| 'fun setUp(binaryMessenger: BinaryMessenger, api: $apiName?) '); |
| indent.scoped('{', '}', () { |
| for (final Method method in api.methods) { |
| indent.write('run '); |
| indent.scoped('{', '}', () { |
| String? taskQueue; |
| if (method.taskQueueType != TaskQueueType.serial) { |
| taskQueue = 'taskQueue'; |
| indent.writeln( |
| 'val $taskQueue = binaryMessenger.makeBackgroundTaskQueue()'); |
| } |
| |
| final String channelName = makeChannelName(api, method); |
| |
| indent.write( |
| 'val channel = BasicMessageChannel<Any?>(binaryMessenger, "$channelName", codec'); |
| |
| if (taskQueue != null) { |
| indent.addln(', $taskQueue)'); |
| } else { |
| indent.addln(')'); |
| } |
| |
| indent.write('if (api != null) '); |
| indent.scoped('{', '}', () { |
| final String messageVarName = |
| method.arguments.isNotEmpty ? 'message' : '_'; |
| |
| indent.write('channel.setMessageHandler '); |
| indent.scoped('{ $messageVarName, reply ->', '}', () { |
| indent.writeln('var wrapped = listOf<Any?>()'); |
| indent.write('try '); |
| indent.scoped('{', '}', () { |
| final List<String> methodArgument = <String>[]; |
| if (method.arguments.isNotEmpty) { |
| indent.writeln('val args = message as List<Any?>'); |
| enumerate(method.arguments, (int index, NamedType arg) { |
| final String argName = _getSafeArgumentName(index, arg); |
| final String argIndex = 'args[$index]'; |
| indent.writeln( |
| 'val $argName = ${_castForceUnwrap(argIndex, arg.type, root)}'); |
| methodArgument.add(argName); |
| }); |
| } |
| final String call = |
| 'api.${method.name}(${methodArgument.join(', ')})'; |
| if (method.isAsynchronous) { |
| indent.write('$call '); |
| final String resultValue = |
| method.returnType.isVoid ? 'null' : 'it'; |
| indent.scoped('{', '}', () { |
| indent.writeln('reply.reply(wrapResult($resultValue))'); |
| }); |
| } else if (method.returnType.isVoid) { |
| indent.writeln(call); |
| indent.writeln('wrapped = listOf<Any?>(null)'); |
| } else { |
| indent.writeln('wrapped = listOf<Any?>($call)'); |
| } |
| }, addTrailingNewline: false); |
| indent.add(' catch (exception: Error) '); |
| indent.scoped('{', '}', () { |
| indent.writeln('wrapped = wrapError(exception)'); |
| if (method.isAsynchronous) { |
| indent.writeln('reply.reply(wrapped)'); |
| } |
| }); |
| if (!method.isAsynchronous) { |
| indent.writeln('reply.reply(wrapped)'); |
| } |
| }); |
| }, addTrailingNewline: false); |
| indent.scoped(' else {', '}', () { |
| indent.writeln('channel.setMessageHandler(null)'); |
| }); |
| }); |
| } |
| }); |
| }); |
| }); |
| } |
| |
| String _getArgumentName(int count, NamedType argument) => |
| argument.name.isEmpty ? 'arg$count' : argument.name; |
| |
| /// Returns an argument name that can be used in a context where it is possible to collide. |
| String _getSafeArgumentName(int count, NamedType argument) => |
| '${_getArgumentName(count, argument)}Arg'; |
| |
| /// Writes the code for a flutter [Api], [api]. |
| /// Example: |
| /// class Foo(private val binaryMessenger: BinaryMessenger) { |
| /// fun add(x: Int, y: Int, callback: (Int?) -> Unit) {...} |
| /// } |
| void _writeFlutterApi(Indent indent, Api api, Root root) { |
| assert(api.location == ApiLocation.flutter); |
| final bool isCustomCodec = getCodecClasses(api, root).isNotEmpty; |
| |
| const List<String> generatedMessages = <String>[ |
| ' Generated class from Pigeon that represents Flutter messages that can be called from Kotlin.' |
| ]; |
| addDocumentationComments(indent, api.documentationComments, _docCommentSpec, |
| generatorComments: generatedMessages); |
| |
| final String apiName = api.name; |
| indent.writeln('@Suppress("UNCHECKED_CAST")'); |
| indent.write('class $apiName(private val binaryMessenger: BinaryMessenger) '); |
| indent.scoped('{', '}', () { |
| indent.write('companion object '); |
| indent.scoped('{', '}', () { |
| indent.writeln('/** The codec used by $apiName. */'); |
| indent.write('val codec: MessageCodec<Any?> by lazy '); |
| indent.scoped('{', '}', () { |
| if (isCustomCodec) { |
| indent.writeln(_getCodecName(api)); |
| } else { |
| indent.writeln('StandardMessageCodec()'); |
| } |
| }); |
| }); |
| |
| for (final Method func in api.methods) { |
| final String channelName = makeChannelName(api, func); |
| final String returnType = func.returnType.isVoid |
| ? '' |
| : _nullsafeKotlinTypeForDartType(func.returnType); |
| String sendArgument; |
| |
| addDocumentationComments( |
| indent, func.documentationComments, _docCommentSpec); |
| |
| if (func.arguments.isEmpty) { |
| indent.write('fun ${func.name}(callback: ($returnType) -> Unit) '); |
| sendArgument = 'null'; |
| } else { |
| final Iterable<String> argTypes = func.arguments |
| .map((NamedType e) => _nullsafeKotlinTypeForDartType(e.type)); |
| final Iterable<String> argNames = |
| indexMap(func.arguments, _getSafeArgumentName); |
| sendArgument = 'listOf(${argNames.join(', ')})'; |
| final String argsSignature = map2(argTypes, argNames, |
| (String type, String name) => '$name: $type').join(', '); |
| if (func.returnType.isVoid) { |
| indent |
| .write('fun ${func.name}($argsSignature, callback: () -> Unit) '); |
| } else { |
| indent.write( |
| 'fun ${func.name}($argsSignature, callback: ($returnType) -> Unit) '); |
| } |
| } |
| indent.scoped('{', '}', () { |
| const String channel = 'channel'; |
| indent.writeln( |
| 'val $channel = BasicMessageChannel<Any?>(binaryMessenger, "$channelName", codec)'); |
| indent.write('$channel.send($sendArgument) '); |
| if (func.returnType.isVoid) { |
| indent.scoped('{', '}', () { |
| indent.writeln('callback()'); |
| }); |
| } else { |
| final String forceUnwrap = func.returnType.isNullable ? '?' : ''; |
| indent.scoped('{', '}', () { |
| indent.writeln('val result = it as$forceUnwrap $returnType'); |
| indent.writeln('callback(result)'); |
| }); |
| } |
| }); |
| } |
| }); |
| } |
| |
| String _castForceUnwrap(String value, TypeDeclaration type, Root root) { |
| if (isEnum(root, type)) { |
| final String forceUnwrap = type.isNullable ? '' : '!!'; |
| final String nullableConditionPrefix = |
| type.isNullable ? '$value == null ? null : ' : ''; |
| return '$nullableConditionPrefix${_kotlinTypeForDartType(type)}.ofRaw($value as Int)$forceUnwrap'; |
| } else { |
| final String castUnwrap = type.isNullable ? '?' : ''; |
| |
| // The StandardMessageCodec can give us [Integer, Long] for |
| // a Dart 'int'. To keep things simple we just use 64bit |
| // longs in Pigeon with Kotlin. |
| if (type.baseName == 'int') { |
| return '$value.let { if (it is Int) it.toLong() else it as$castUnwrap Long }'; |
| } else { |
| return '$value as$castUnwrap ${_kotlinTypeForDartType(type)}'; |
| } |
| } |
| } |
| |
| /// Converts a [List] of [TypeDeclaration]s to a comma separated [String] to be |
| /// used in Kotlin code. |
| String _flattenTypeArguments(List<TypeDeclaration> args) { |
| return args.map(_kotlinTypeForDartType).join(', '); |
| } |
| |
| String _kotlinTypeForBuiltinGenericDartType(TypeDeclaration type) { |
| if (type.typeArguments.isEmpty) { |
| switch (type.baseName) { |
| case 'List': |
| return 'List<Any?>'; |
| case 'Map': |
| return 'Map<Any, Any?>'; |
| default: |
| return 'Any'; |
| } |
| } else { |
| switch (type.baseName) { |
| case 'List': |
| return 'List<${_nullsafeKotlinTypeForDartType(type.typeArguments.first)}>'; |
| case 'Map': |
| return 'Map<${_nullsafeKotlinTypeForDartType(type.typeArguments.first)}, ${_nullsafeKotlinTypeForDartType(type.typeArguments.last)}>'; |
| default: |
| return '${type.baseName}<${_flattenTypeArguments(type.typeArguments)}>'; |
| } |
| } |
| } |
| |
| String? _kotlinTypeForBuiltinDartType(TypeDeclaration type) { |
| const Map<String, String> kotlinTypeForDartTypeMap = <String, String>{ |
| 'void': 'Void', |
| 'bool': 'Boolean', |
| 'String': 'String', |
| 'int': 'Long', |
| 'double': 'Double', |
| 'Uint8List': 'ByteArray', |
| 'Int32List': 'IntArray', |
| 'Int64List': 'LongArray', |
| 'Float32List': 'FloatArray', |
| 'Float64List': 'DoubleArray', |
| 'Object': 'Any', |
| }; |
| if (kotlinTypeForDartTypeMap.containsKey(type.baseName)) { |
| return kotlinTypeForDartTypeMap[type.baseName]; |
| } else if (type.baseName == 'List' || type.baseName == 'Map') { |
| return _kotlinTypeForBuiltinGenericDartType(type); |
| } else { |
| return null; |
| } |
| } |
| |
| String _kotlinTypeForDartType(TypeDeclaration type) { |
| return _kotlinTypeForBuiltinDartType(type) ?? type.baseName; |
| } |
| |
| String _nullsafeKotlinTypeForDartType(TypeDeclaration type) { |
| final String nullSafe = type.isNullable ? '?' : ''; |
| return '${_kotlinTypeForDartType(type)}$nullSafe'; |
| } |
| |
| /// Generates the ".kotlin" file for the AST represented by [root] to [sink] with the |
| /// provided [options]. |
| void generateKotlin(KotlinOptions options, Root root, StringSink sink) { |
| final Set<String> rootClassNameSet = |
| root.classes.map((Class x) => x.name).toSet(); |
| final Set<String> rootEnumNameSet = |
| root.enums.map((Enum x) => x.name).toSet(); |
| final Indent indent = Indent(sink); |
| |
| HostDatatype getHostDatatype(NamedType field) { |
| return getFieldHostDatatype(field, root.classes, root.enums, |
| (TypeDeclaration x) => _kotlinTypeForBuiltinDartType(x)); |
| } |
| |
| void writeHeader() { |
| if (options.copyrightHeader != null) { |
| addLines(indent, options.copyrightHeader!, linePrefix: '// '); |
| } |
| indent.writeln('// $generatedCodeWarning'); |
| indent.writeln('// $seeAlsoWarning'); |
| } |
| |
| void writeImports() { |
| indent.writeln('import android.util.Log'); |
| indent.writeln('import io.flutter.plugin.common.BasicMessageChannel'); |
| indent.writeln('import io.flutter.plugin.common.BinaryMessenger'); |
| indent.writeln('import io.flutter.plugin.common.MessageCodec'); |
| indent.writeln('import io.flutter.plugin.common.StandardMessageCodec'); |
| indent.writeln('import java.io.ByteArrayOutputStream'); |
| indent.writeln('import java.nio.ByteBuffer'); |
| } |
| |
| void writeEnum(Enum anEnum) { |
| addDocumentationComments( |
| indent, anEnum.documentationComments, _docCommentSpec); |
| indent.write('enum class ${anEnum.name}(val raw: Int) '); |
| indent.scoped('{', '}', () { |
| enumerate(anEnum.members, (int index, final EnumMember member) { |
| addDocumentationComments( |
| indent, member.documentationComments, _docCommentSpec); |
| indent.write('${member.name.toUpperCase()}($index)'); |
| if (index != anEnum.members.length - 1) { |
| indent.addln(','); |
| } else { |
| indent.addln(';'); |
| } |
| }); |
| |
| indent.writeln(''); |
| indent.write('companion object '); |
| indent.scoped('{', '}', () { |
| indent.write('fun ofRaw(raw: Int): ${anEnum.name}? '); |
| indent.scoped('{', '}', () { |
| indent.writeln('return values().firstOrNull { it.raw == raw }'); |
| }); |
| }); |
| }); |
| } |
| |
| void writeDataClass(Class klass) { |
| void writeField(NamedType field) { |
| addDocumentationComments( |
| indent, field.documentationComments, _docCommentSpec); |
| indent.write( |
| 'val ${field.name}: ${_nullsafeKotlinTypeForDartType(field.type)}'); |
| final String defaultNil = field.type.isNullable ? ' = null' : ''; |
| indent.add(defaultNil); |
| } |
| |
| void writeToList() { |
| indent.write('fun toList(): List<Any?> '); |
| indent.scoped('{', '}', () { |
| indent.write('return listOf<Any?>'); |
| indent.scoped('(', ')', () { |
| for (final NamedType field in getFieldsInSerializationOrder(klass)) { |
| final HostDatatype hostDatatype = getHostDatatype(field); |
| String toWriteValue = ''; |
| final String fieldName = field.name; |
| if (!hostDatatype.isBuiltin && |
| rootClassNameSet.contains(field.type.baseName)) { |
| toWriteValue = '$fieldName?.toList()'; |
| } else if (!hostDatatype.isBuiltin && |
| rootEnumNameSet.contains(field.type.baseName)) { |
| toWriteValue = '$fieldName?.raw'; |
| } else { |
| toWriteValue = fieldName; |
| } |
| indent.writeln('$toWriteValue,'); |
| } |
| }); |
| }); |
| } |
| |
| void writeFromList() { |
| final String className = klass.name; |
| |
| indent.write('companion object '); |
| indent.scoped('{', '}', () { |
| indent.writeln('@Suppress("UNCHECKED_CAST")'); |
| indent.write('fun fromList(list: List<Any?>): $className '); |
| |
| indent.scoped('{', '}', () { |
| enumerate(getFieldsInSerializationOrder(klass), |
| (int index, final NamedType field) { |
| final HostDatatype hostDatatype = getHostDatatype(field); |
| |
| // The StandardMessageCodec can give us [Integer, Long] for |
| // a Dart 'int'. To keep things simple we just use 64bit |
| // longs in Pigeon with Kotlin. |
| final bool isInt = field.type.baseName == 'int'; |
| |
| final String listValue = 'list[$index]'; |
| final String fieldType = _kotlinTypeForDartType(field.type); |
| |
| if (field.type.isNullable) { |
| if (!hostDatatype.isBuiltin && |
| rootClassNameSet.contains(field.type.baseName)) { |
| indent.write('val ${field.name}: $fieldType? = '); |
| indent.add('($listValue as? List<Any?>)?.let '); |
| indent.scoped('{', '}', () { |
| indent.writeln('$fieldType.fromList(it)'); |
| }); |
| } else if (!hostDatatype.isBuiltin && |
| rootEnumNameSet.contains(field.type.baseName)) { |
| indent.write('val ${field.name}: $fieldType? = '); |
| indent.add('($listValue as? Int)?.let '); |
| indent.scoped('{', '}', () { |
| indent.writeln('$fieldType.ofRaw(it)'); |
| }); |
| } else if (isInt) { |
| indent.write('val ${field.name} = $listValue'); |
| indent.addln( |
| '.let { if (it is Int) it.toLong() else it as? Long }'); |
| } else { |
| indent.writeln('val ${field.name} = $listValue as? $fieldType'); |
| } |
| } else { |
| if (!hostDatatype.isBuiltin && |
| rootClassNameSet.contains(field.type.baseName)) { |
| indent.writeln( |
| 'val ${field.name} = $fieldType.fromList($listValue as List<Any?>)'); |
| } else if (!hostDatatype.isBuiltin && |
| rootEnumNameSet.contains(field.type.baseName)) { |
| indent.write( |
| 'val ${field.name} = $fieldType.ofRaw($listValue as Int)!!'); |
| } else { |
| indent.writeln('val ${field.name} = $listValue as $fieldType'); |
| } |
| } |
| }); |
| |
| indent.writeln(''); |
| indent.write('return $className('); |
| for (final NamedType field in getFieldsInSerializationOrder(klass)) { |
| final String comma = |
| getFieldsInSerializationOrder(klass).last == field ? '' : ', '; |
| indent.add('${field.name}$comma'); |
| } |
| indent.addln(')'); |
| }); |
| }); |
| } |
| |
| const List<String> generatedMessages = <String>[ |
| ' Generated class from Pigeon that represents data sent in messages.' |
| ]; |
| addDocumentationComments( |
| indent, klass.documentationComments, _docCommentSpec, |
| generatorComments: generatedMessages); |
| |
| indent.write('data class ${klass.name} '); |
| indent.scoped('(', '', () { |
| for (final NamedType element in getFieldsInSerializationOrder(klass)) { |
| writeField(element); |
| if (getFieldsInSerializationOrder(klass).last != element) { |
| indent.addln(','); |
| } else { |
| indent.addln(''); |
| } |
| } |
| }); |
| |
| indent.scoped(') {', '}', () { |
| writeFromList(); |
| writeToList(); |
| }); |
| } |
| |
| void writeApi(Api api) { |
| if (api.location == ApiLocation.host) { |
| _writeHostApi(indent, api, root); |
| } else if (api.location == ApiLocation.flutter) { |
| _writeFlutterApi(indent, api, root); |
| } |
| } |
| |
| void writeWrapResult() { |
| indent.write('private fun wrapResult(result: Any?): List<Any?> '); |
| indent.scoped('{', '}', () { |
| indent.writeln('return listOf(result)'); |
| }); |
| } |
| |
| void writeWrapError() { |
| indent.write('private fun wrapError(exception: Throwable): List<Any> '); |
| indent.scoped('{', '}', () { |
| indent.write('return '); |
| indent.scoped('listOf<Any>(', ')', () { |
| indent.writeln('exception.javaClass.simpleName,'); |
| indent.writeln('exception.toString(),'); |
| indent.writeln( |
| '"Cause: " + exception.cause + ", Stacktrace: " + Log.getStackTraceString(exception)'); |
| }); |
| }); |
| } |
| |
| writeHeader(); |
| indent.addln(''); |
| if (options.package != null) { |
| indent.writeln('package ${options.package}'); |
| } |
| indent.addln(''); |
| writeImports(); |
| indent.addln(''); |
| indent.writeln('/** Generated class from Pigeon. */'); |
| for (final Enum anEnum in root.enums) { |
| indent.writeln(''); |
| writeEnum(anEnum); |
| } |
| |
| for (final Class klass in root.classes) { |
| indent.addln(''); |
| writeDataClass(klass); |
| } |
| |
| if (root.apis.any((Api api) => |
| api.location == ApiLocation.host && |
| api.methods.any((Method it) => it.isAsynchronous))) { |
| indent.addln(''); |
| } |
| |
| for (final Api api in root.apis) { |
| if (getCodecClasses(api, root).isNotEmpty) { |
| _writeCodec(indent, api, root); |
| indent.addln(''); |
| } |
| writeApi(api); |
| } |
| |
| indent.addln(''); |
| writeWrapResult(); |
| indent.addln(''); |
| writeWrapError(); |
| } |