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Kotlin compiler plugin for generating platform-compatible functions for suspend functions.
class Foo {
@JvmBlocking
@JvmAsync
suspend fun waitAndGet(): String {
delay(5)
return "Hello"
}
}compiled 👇
class Foo {
// Hide from Java
@JvmSynthetic
suspend fun waitAndGet(): String {
delay(5)
return "Hello"
}
@Api4J // RequiresOptIn annotation, provide warnings to Kotlin
fun waitAndGetBlocking(): String = runInBlocking { waitAndGet() } // 'runInBlocking' from the runtime provided by the plugin
@Api4J // RequiresOptIn annotation, provide warnings to Kotlin
fun waitAndGetAsync(): CompletableFuture<out String> = runInAsync { waitAndGet() } // 'runInAsync' from the runtime provided by the plugin
}class Foo {
@JsPromise
suspend fun waitAndGet(): String {
delay(5)
return "Hello"
}
}compiled 👇
class Foo {
suspend fun waitAndGet(): String {
delay(5)
return "Hello"
}
@Api4Js // RequiresOptIn annotation, provide warnings to Kotlin
fun waitAndGetAsync(): Promise<String> = runInAsync { waitAndGet() } // 'runInAsync' from the runtime provided by the plugin
}
JS platform target not supported yet. see: KT-53993JS has been supported since 0.6.0! See the process at KT-53993, and the final winning shot at #39!
Warning
Since v0.6.0, In experiments, immature and unstable
class Foo {
@JsPromise
suspend fun waitAndGet(): String {
delay(5)
return "Hello"
}
}
//// some custom types or functions...
fun <T> runInAsync(block: suspend () -> T): AsyncResult<T> = AsyncResult(block)
class AsyncResult<T>(val block: suspend () -> T) {
@OptIn(DelicateCoroutinesApi::class)
fun toPromise(): Promise<JsAny?> {
return GlobalScope.promise { block() }
}
}compiled 👇
class Foo {
suspend fun waitAndGet(): String {
delay(5)
return "Hello"
}
@Api4Js // RequiresOptIn annotation, provide warnings to Kotlin
fun waitAndGetAsync(): AsyncResult<String> = runInAsync { waitAndGet() } // 'runInAsync' from the runtime provided by the plugin
// AsyncResult is a custom type
}Using the plugins DSL:
Kotlin
build.gradle.kts
plugins {
id("org.jetbrains.kotlin.jvm") version "$KOTLIN_VERSION" // or js? or multiplatform?
id("love.forte.plugin.suspend-transform") version "$PLUGIN_VERSION"
// other...
}
// other...
// config it.
suspendTransform {
enabled = true // default: true
includeRuntime = true // default: true
jvm {
// ...
}
js {
// ...
}
}Groovy
build.gradle
plugins {
id "org.jetbrains.kotlin.jvm" version "$KOTLIN_VERSION" // or js? or multiplatform?
id "love.forte.plugin.suspend-transform" version "$PLUGIN_VERSION"
// other...
}
// other...
// config it.
suspendTransform {
enabled = true // default: true
includeRuntime = true // default: true
// or custom transformers
transformers = listOf(...)
}Using legacy plugin application:
Kotlin
build.gradle.kts
buildscript {
repositories {
mavenCentral()
gradlePluginPortal()
}
dependencies {
classpath("love.forte.plugin.suspend-transform:suspend-transform-plugin-gradle:$GRADLE_PLUGIN_VERSION")
}
}
plugins {
id("org.jetbrains.kotlin.jvm") // or js? or multiplatform?
id("love.forte.plugin.suspend-transform")
// other...
}
// other...
// config it.
suspendTransform {
enabled = true // default: true
includeRuntime = true // default: true
useDefault()
// or custom transformers
transformers = listOf(...)
}Groovy
build.gradle
buildscript {
repositories {
maven {
url "https://plugins.gradle.org/m2/"
}
}
dependencies {
classpath "love.forte.plugin.suspend-transform:suspend-transform-plugin-gradle:$VERSION"
}
}
plugins {
id "org.jetbrains.kotlin.jvm" // or js? or multiplatform?
id "love.forte.plugin.suspend-transform"
// other...
}
// other...
// config it.
suspendTransform {
enabled = true // default: true
includeRuntime = true // default: true
useDefault()
// or custom transformers
transformers = listOf(...)
}Gradle JVM must be JDK11+
K2 is supported since v0.7.0.
Warning
In experiments.
source:
import love.forte.plugin.suspendtrans.annotation.JvmAsync
import love.forte.plugin.suspendtrans.annotation.JvmBlocking
@JvmBlocking
@JvmAsync
interface Foo {
suspend fun name(): String
suspend fun age(def: Int = 5): Int
@JvmBlocking(asProperty = true)
suspend fun self(): Foo
}
@JvmBlocking
@JvmAsync
class FooImpl : Foo {
suspend fun size(): Long = 666
override suspend fun name(): String = "forte"
override suspend fun age(def: Int): Int = def
@JvmBlocking(asProperty = true) // must be 'asProperty=true'
override suspend fun self(): FooImpl = this
}
class Bar {
@JvmBlocking
@JvmAsync
suspend fun bar(): String = ""
suspend fun noTrans(): Int = 1
}compiled:
Simplified from decompiled results.
import love.forte.plugin.suspendtrans.annotation.JvmAsync
import love.forte.plugin.suspendtrans.annotation.JvmBlocking
import love.forte.plugin.suspendtrans.annotation.Generated
import love.forte.plugin.suspendtrans.annotation.Api4J
import kotlin.jvm.JvmSynthetic
@JvmBlocking
@JvmAsync
interface Foo {
@Generated
@Api4J
val selfBlocking: Foo /* compiled code */
suspend fun age(def: Int /* = compiled code */): Int
@Generated
@Api4J
fun ageAsync(def: Int /* = compiled code */): java.util.concurrent.CompletableFuture<Int> { /* compiled code */ }
@Generated
@Api4J
fun ageBlocking(def: Int /* = compiled code */): Int { /* compiled code */ }
suspend fun name(): String
@Generated
@Api4J
fun nameAsync(): java.util.concurrent.CompletableFuture<out String> { /* compiled code */ }
@Generated
@Api4J
fun nameBlocking(): String { /* compiled code */ }
@JvmBlocking
suspend fun self(): Foo
@Generated
@Api4J
fun selfAsync(): java.util.concurrent.CompletableFuture<out Foo> { /* compiled code */ }
}
@JvmBlocking
@JvmAsync
class FooImpl : Foo {
@Generated
@Api4J
open val selfBlocking: FooImpl /* compiled code */
@JvmSynthetic
open suspend fun age(def: Int): Int { /* compiled code */ }
@Generated
@Api4J
open fun ageAsync(def: Int): java.util.concurrent.CompletableFuture<Int> { /* compiled code */ }
@Generated
@Api4J
open fun ageBlocking(def: Int): Int { /* compiled code */ }
@JvmSynthetic
open suspend fun name(): String { /* compiled code */ }
@Generated
@Api4J
open fun nameAsync(): java.util.concurrent.CompletableFuture<out String> { /* compiled code */ }
@Generated
@Api4J
open fun nameBlocking(): String { /* compiled code */ }
@JvmSynthetic
@JvmBlocking
suspend fun self(): FooImpl { /* compiled code */ }
@Generated
@Api4J
fun selfAsync(): java.util.concurrent.CompletableFuture<out FooImpl> { /* compiled code */ }
@JvmSynthetic
suspend fun size(): Long { /* compiled code */ }
@Generated
@Api4J
fun sizeAsync(): java.util.concurrent.CompletableFuture<Long> { /* compiled code */ }
@Generated
@Api4J
fun sizeBlocking(): Long { /* compiled code */ }
}
class Bar {
@JvmSynthetic
@JvmBlocking
@JvmAsync
suspend fun bar(): String { /* compiled code */ }
@Generated
@Api4J
fun barAsync(): java.util.concurrent.CompletableFuture<out String> { /* compiled code */ }
@Generated
@Api4J
fun barBlocking(): String { /* compiled code */ }
fun noTrans(): Int { /* compiled code */ }
}plugin {
id("love.forte.plugin.suspend-transform") version "$VERSION"
}
suspendTransform {
// enabled suspend transform plugin
enabled = true
// include 'love.forte.plugin.suspend-transform:suspend-transform-runtime' to the runtime environment
includeRuntime = true
// the configuration name for including 'love.forte.plugin.suspend-transform:suspend-transform-runtime'
runtimeConfigurationName = "implementation"
val customJvmTransformer = Transformer(
// mark annotation info, e.g. `@JvmBlocking`
markAnnotation = MarkAnnotation(
classInfo = ClassInfo("love.forte.plugin.suspendtrans.annotation", "JvmBlocking"), // class info for this annotation
baseNameProperty = "baseName", // The property used to represent the 'base name' in the annotation, e.g. `@JvmBlocking(baseName = ...)`
suffixProperty = "suffix", // The property used to represent the 'suffix' in the annotation, e.g. `@JvmBlocking(suffix = ...)`
asPropertyProperty = "asProperty", // The property used to represent the 'asProperty' in the annotation, e.g. `@JvmBlocking(asProperty = true|false)`
defaultSuffix = "Blocking", // Default value used when property 'suffix' (the value of suffixProperty) does not exist (when not specified by the user) (the compiler plugin cannot detect property defaults directly, so the default value must be specified from here)
// e.g. @JvmBlocking(suffix = "Abc"), the suffix is 'Abc', but `@JvmBlocking()`, the suffix is null in compiler plugin, so use the default suffix value.
defaultAsProperty = false, // Default value used when property 'suffix' (the value of suffixProperty) does not exist (Similar to defaultSuffix)
),
// the transform function, e.g.
// 👇 `love.forte.plugin.suspendtrans.runtime.$runInBlocking$`
// it will be like
// ```
// @JvmBlocking suspend fun runXxx() { ... }
// fun runXxxBlocking() = `$runInBlocking$` { runXxx() /* suspend */ } // generated function
// ```
transformFunctionInfo = FunctionInfo(
packageName = "love.forte.plugin.suspendtrans.runtime",
className = null, // null if top-level function
functionName = "\$runInBlocking\$"
),
transformReturnType = null, // return type, or null if return the return type of origin function, e.g. `ClassInfo("java.util.concurrent", "CompletableFuture")`
transformReturnTypeGeneric = false, // if you return like `CompletableFuture<T>`, make it `true`
originFunctionIncludeAnnotations = listOf(IncludeAnnotation(ClassInfo("kotlin.jvm", "JvmSynthetic"))), // include into origin function
copyAnnotationsToSyntheticFunction = true,
copyAnnotationExcludes = listOf(ClassInfo("kotlin.jvm", "JvmSynthetic")), // do not copy from origin function
syntheticFunctionIncludeAnnotations = listOf(IncludeAnnotation(jvmApi4JAnnotationClassInfo)) // include into synthetic function
)
addJvmTransformers(
customJvmTransformer, ...
)
// or addJsTransformers(...)
}Kotlin Suspend Interface reversal : Generate platform-compatible extension types for interfaces or abstract classes that contain suspend functions, based on KSP.
see LICENSE .
Copyright (c) 2022 ForteScarlet
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
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copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.