Wasm target support (#188)

* Enable Wasm target and updated Kotlin version to 1.9.10

Author: fzhinkin

README.md

@@ -4,7 +4,7 @@
 [![JetBrains incubator project](https://jb.gg/badges/incubator.svg)](https://confluence.jetbrains.com/display/ALL/JetBrains+on+GitHub)
 [![GitHub license](https://img.shields.io/badge/license-Apache%20License%202.0-blue.svg?style=flat)](http://www.apache.org/licenses/LICENSE-2.0)
 [![Download](https://img.shields.io/maven-central/v/org.jetbrains.kotlinx/kotlinx-io-core?versionSuffix=0.2.1)](https://central.sonatype.com/artifact/org.jetbrains.kotlinx/kotlinx-io-core/0.2.1)
-[![Kotlin](https://img.shields.io/badge/kotlin-1.9.0-blue.svg?logo=kotlin)](http://kotlinlang.org)
+[![Kotlin](https://img.shields.io/badge/kotlin-1.9.10-blue.svg?logo=kotlin)](http://kotlinlang.org)
 [![TeamCity build](https://img.shields.io/teamcity/build/s/KotlinTools_KotlinxIo_BuildAggregated.svg?server=http%3A%2F%2Fteamcity.jetbrains.com)](https://teamcity.jetbrains.com/viewType.html?buildTypeId=KotlinTools_KotlinxIo_BuildAggregated&guest=1)
 [![KDoc link](https://img.shields.io/badge/API_reference-KDoc-blue)](https://fzhinkin.github.io/kotlinx-io-dokka-docs-preview/)
 

build-logic/src/main/kotlin/kotlinx/io/conventions/kotlinx-io-multiplatform.gradle.kts

@@ -5,6 +5,7 @@
 
 import org.jetbrains.kotlin.gradle.dsl.KotlinMultiplatformExtension
 import org.jetbrains.kotlin.gradle.plugin.KotlinSourceSet
+import org.jetbrains.kotlin.gradle.targets.js.nodejs.NodeJsRootExtension
 import kotlin.jvm.optionals.getOrNull
 
 plugins {
@@ -36,6 +37,14 @@ kotlin {
         }
     }
 
+    @OptIn(org.jetbrains.kotlin.gradle.targets.js.dsl.ExperimentalWasmDsl::class)
+    wasm {
+        nodejs()
+        //  Disabled because we can't exclude some tests: https://youtrack.jetbrains.com/issue/KT-58291
+        // browser()
+        binaries.executable()
+    }
+
     sourceSets {
         commonTest {
             dependencies {
@@ -163,3 +172,7 @@ fun androidTargets() = listOf(
     "androidNativeX64",
     "androidNativeX86"
 )
+
+rootProject.the<NodeJsRootExtension>().apply {
+    nodeVersion = "20.4.0"
+}

core/build.gradle.kts

@@ -31,6 +31,18 @@ kotlin {
         }
     }
 
+    @OptIn(org.jetbrains.kotlin.gradle.targets.js.dsl.ExperimentalWasmDsl::class)
+    wasm {
+        nodejs {
+            testTask(Action {
+                useMocha {
+                    timeout = "300s"
+                }
+                filter.setExcludePatterns("*SmokeFileTest*")
+            })
+        }
+    }
+
     sourceSets {
         commonMain {
             dependencies {

core/wasm/src/-PlatformWasm.kt

@@ -0,0 +1,19 @@
+/*
+ * Copyright 2010-2023 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE.txt file.
+ */
+
+package kotlinx.io
+
+import kotlinx.io.internal.commonAsUtf8ToByteArray
+
+internal actual fun String.asUtf8ToByteArray(): ByteArray = commonAsUtf8ToByteArray()
+
+public actual open class IOException actual constructor(
+    message: String?,
+    cause: Throwable?
+) : Exception(message, cause) {
+    public actual constructor(message: String?) : this(message, null)
+}
+
+public actual open class EOFException actual constructor(message: String?) : IOException(message)

core/wasm/src/RawSink.kt

@@ -0,0 +1,15 @@
+/*
+ * Copyright 2010-2023 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE.txt file.
+ */
+
+package kotlinx.io
+
+@OptIn(ExperimentalStdlibApi::class)
+public actual interface RawSink : AutoCloseableAlias {
+    public actual fun write(source: Buffer, byteCount: Long)
+
+    public actual fun flush()
+
+    actual override fun close()
+}

core/wasm/src/SegmentPool.kt

@@ -0,0 +1,17 @@
+/*
+ * Copyright 2010-2023 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE.txt file.
+ */
+
+package kotlinx.io
+
+internal actual object SegmentPool {
+    actual val MAX_SIZE: Int = 0
+
+    actual val byteCount: Int = 0
+
+    actual fun take(): Segment = Segment()
+
+    actual fun recycle(segment: Segment) {
+    }
+}

core/wasm/src/files/PathsWasm.kt

@@ -0,0 +1,27 @@
+/*
+ * Copyright 2010-2023 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE.txt file.
+ */
+
+package kotlinx.io.files
+
+import kotlinx.io.Sink
+import kotlinx.io.Source
+
+
+public actual class Path internal constructor(private val path: String,
+                                              @Suppress("UNUSED_PARAMETER") any: Any?) {
+    override fun toString(): String = path
+}
+
+public actual fun Path(path: String): Path {
+    return Path(path, null)
+}
+
+public actual fun Path.source(): Source {
+    TODO("Paths are not supported for Wasm target")
+}
+
+public actual fun Path.sink(): Sink {
+    TODO("Paths are not supported for Wasm target")
+}

core/wasm/test/utils.kt

@@ -0,0 +1,14 @@
+/*
+ * Copyright 2010-2023 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE.txt file.
+ */
+
+package kotlinx.io
+
+actual fun createTempFile(): String {
+    TODO("Paths are not supported for Wasm target")
+}
+
+actual fun deleteFile(path: String) {
+    TODO("Paths are not supported for Wasm target")
+}

gradle/libs.versions.toml

@@ -1,5 +1,5 @@
 [versions]
-kotlin = "1.9.0"
+kotlin = "1.9.10"
 java = "8"
 dokka = "1.8.20"
 kover = "0.7.3"