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Merge pull request #78 from ema987/feat/dataClassCopyGenerationFeature
Add feature to generate improved copy method
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12 changes: 12 additions & 0 deletions
12
kswift-gradle-plugin/src/main/kotlin/dev/icerock/moko/kswift/plugin/KmConstructorExt.kt
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,12 @@ | ||
| /* | ||
| * Copyright 2023 IceRock MAG Inc. Use of this source code is governed by the Apache 2.0 license. | ||
| */ | ||
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| package dev.icerock.moko.kswift.plugin | ||
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| import kotlinx.metadata.Flag | ||
| import kotlinx.metadata.KmConstructor | ||
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| fun KmConstructor.isPrimary(): Boolean = Flag.Constructor.IS_SECONDARY(flags).not() | ||
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| fun List<KmConstructor>.getPrimaryConstructor(): KmConstructor = single { constructor -> constructor.isPrimary() } |
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121
...dle-plugin/src/main/kotlin/dev/icerock/moko/kswift/plugin/feature/DataClassCopyFeature.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,121 @@ | ||
| /* | ||
| * Copyright 2021 IceRock MAG Inc. Use of this source code is governed by the Apache 2.0 license. | ||
| */ | ||
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| package dev.icerock.moko.kswift.plugin.feature | ||
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| import dev.icerock.moko.kswift.plugin.buildTypeVariableNames | ||
| import dev.icerock.moko.kswift.plugin.context.ClassContext | ||
| import dev.icerock.moko.kswift.plugin.context.kLibClasses | ||
| import dev.icerock.moko.kswift.plugin.getDeclaredTypeNameWithGenerics | ||
| import dev.icerock.moko.kswift.plugin.getPrimaryConstructor | ||
| import dev.icerock.moko.kswift.plugin.isDataClass | ||
| import dev.icerock.moko.kswift.plugin.shouldUseKotlinTypeWhenHandlingOptionalType | ||
| import dev.icerock.moko.kswift.plugin.toTypeName | ||
| import io.outfoxx.swiftpoet.CodeBlock | ||
| import io.outfoxx.swiftpoet.ExtensionSpec | ||
| import io.outfoxx.swiftpoet.FunctionSpec | ||
| import io.outfoxx.swiftpoet.FunctionTypeName | ||
| import io.outfoxx.swiftpoet.ParameterSpec | ||
| import io.outfoxx.swiftpoet.TypeSpec | ||
| import io.outfoxx.swiftpoet.TypeVariableName | ||
| import kotlinx.metadata.Flag | ||
| import kotlinx.metadata.KmClass | ||
| import kotlin.reflect.KClass | ||
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| /** | ||
| * Creates an improved copy method for data classes | ||
| */ | ||
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| class DataClassCopyFeature( | ||
| override val featureContext: KClass<ClassContext>, | ||
| override val filter: Filter<ClassContext> | ||
| ) : ProcessorFeature<ClassContext>() { | ||
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| @Suppress("ReturnCount") | ||
| override fun doProcess(featureContext: ClassContext, processorContext: ProcessorContext) { | ||
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| val kotlinFrameworkName: String = processorContext.framework.baseName | ||
| val kmClass: KmClass = featureContext.clazz | ||
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| if (Flag.IS_PUBLIC(kmClass.flags).not()) return | ||
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| if (kmClass.isDataClass().not()) return | ||
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| val typeVariables: List<TypeVariableName> = | ||
| kmClass.buildTypeVariableNames(kotlinFrameworkName) | ||
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| // doesn't support generic data classes right now | ||
| if (typeVariables.isNotEmpty()) return | ||
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| val functionReturnType = kmClass.getDeclaredTypeNameWithGenerics( | ||
| kotlinFrameworkName, | ||
| featureContext.kLibClasses | ||
| ) | ||
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| val constructorParameters = kmClass.getPrimaryConstructor().valueParameters | ||
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| val functionParameters = constructorParameters.mapNotNull { parameter -> | ||
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| val parameterType = parameter.type ?: return@mapNotNull null | ||
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| ParameterSpec.builder( | ||
| parameterName = parameter.name, | ||
| type = FunctionTypeName.get( | ||
| parameters = emptyList(), | ||
| returnType = parameterType.toTypeName( | ||
| moduleName = kotlinFrameworkName, | ||
| isUsedInGenerics = parameterType.shouldUseKotlinTypeWhenHandlingOptionalType() | ||
| ).run { | ||
| if (Flag.Type.IS_NULLABLE(parameterType.flags)) { | ||
| makeOptional() | ||
| } else { | ||
| this | ||
| } | ||
| } | ||
| ).makeOptional(), | ||
| ).defaultValue( | ||
| codeBlock = CodeBlock.builder().add("nil").build() | ||
| ).build() | ||
| } | ||
| val functionBody = constructorParameters.joinToString(separator = ",") { property -> | ||
| property.name.run { | ||
| "$this: ($this != nil) ? $this!() : self.$this" | ||
| } | ||
| } | ||
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| val copyFunction = FunctionSpec.builder("copy") | ||
| .addParameters(functionParameters) | ||
| .returns(functionReturnType) | ||
| .addCode( | ||
| CodeBlock.builder() | ||
| .addStatement("return %T($functionBody)", functionReturnType) | ||
| .build() | ||
| ) | ||
| .build() | ||
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| val extensionSpec = | ||
| ExtensionSpec.builder(TypeSpec.classBuilder(functionReturnType.name).build()) | ||
| .addFunction(copyFunction) | ||
| .addDoc("selector: ${featureContext.prefixedUniqueId}") | ||
| .build() | ||
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| processorContext.fileSpecBuilder.addExtension(extensionSpec) | ||
| } | ||
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| class Config : BaseConfig<ClassContext> { | ||
| override var filter: Filter<ClassContext> = Filter.Exclude(emptySet()) | ||
| } | ||
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| companion object : Factory<ClassContext, DataClassCopyFeature, Config> { | ||
| override fun create(block: Config.() -> Unit): DataClassCopyFeature { | ||
| val config = Config().apply(block) | ||
| return DataClassCopyFeature(featureContext, config.filter) | ||
| } | ||
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| override val featureContext: KClass<ClassContext> = ClassContext::class | ||
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| @JvmStatic | ||
| override val factory = Companion | ||
| } | ||
| } |
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