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import com.google.devtools.ksp.processing.*
import com.google.devtools.ksp.symbol.*
import java.io.OutputStreamWriter
class ImplGen : SymbolProcessor {
lateinit var codeGenerator: CodeGenerator
lateinit var logger: KSPLogger
fun init(
options: Map<String, String>,
kotlinVersion: KotlinVersion,
codeGenerator: CodeGenerator,
logger: KSPLogger,
) {
this.codeGenerator = codeGenerator
this.logger = logger
}
override fun process(resolver: Resolver): List<KSAnnotated> {
resolver.getSymbolsWithAnnotation("NeedsImpl").forEach { decl ->
decl as KSClassDeclaration
val file = decl.containingFile!!
val baseName = decl.simpleName.asString()
val implName = baseName + "Impl"
OutputStreamWriter(
codeGenerator.createNewFile(
Dependencies(false, file),
"", implName
)
).use {
it.write("@Impl class $implName : $baseName\n")
}
}
return emptyList()
}
}
class ImplGenProvider : SymbolProcessorProvider {
override fun create(
env: SymbolProcessorEnvironment,
): SymbolProcessor {
return ImplGen().apply {
init(env.options, env.kotlinVersion, env.codeGenerator, env.logger)
}
}
}
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