Add Wasm WASI target (#2510)

This is implementation of Wasm WASI target support.
Please notice, that due to lack of support this target in okio we are forced to escape building this formatter and all formatters unit tests for WASI. We hope that WasmJS target (i.e. backend and compiler plugin) are fully similar to the WasmWASI target so the library functionality is fully covered by WasmJS.

Author: igoriakovlev

build.gradle

@@ -249,3 +249,7 @@ apply from: rootProject.file("gradle/benchmark-parsing.gradle")
 tasks.named("dokkaHtmlMultiModule") {
     pluginsMapConfiguration.set(["org.jetbrains.dokka.base.DokkaBase": """{ "templatesDir": "${projectDir.toString().replace('\\', '/')}/dokka-templates" }"""])
 }
+
+tasks.withType(org.jetbrains.kotlin.gradle.targets.js.npm.tasks.KotlinNpmInstallTask).configureEach {
+    args.add("--ignore-engines")
+}

formats/json/build.gradle

@@ -42,6 +42,9 @@ kotlin {
         wasmJsMain {
             dependsOn(sourceSets.jsWasmMain)
         }
+        wasmWasiMain {
+            dependsOn(sourceSets.jsWasmMain)
+        }
     }
 }
 

gradle/configure-source-sets.gradle

@@ -14,6 +14,11 @@ tasks.withType(JavaCompile).configureEach {
     options.release = 8
 }
 
+// Unfortunately there is no compatible version of okio for Wasm WASI target, so we need to skip to configure WASI for json-okio and json-tests.
+// json-tests uses okio with incorporate with other formatter tests so it is hard and not worth to separate it for two projects for WASI.
+// So we disable WASI target in it and we hope, that WASI version of compiler and serialization plugin are identical to the WasmJS target so WASI target is being covered.
+Boolean isOkIoOrFormatTests = (project.name == 'kotlinx-serialization-json-okio' || project.name == 'kotlinx-serialization-json-tests')
+
 kotlin {
     jvm {
         withJava()
@@ -43,7 +48,13 @@ kotlin {
     }
 
     wasmJs {
-        d8()
+        nodejs()
+    }
+
+    if (!isOkIoOrFormatTests) {
+        wasmWasi {
+            nodejs()
+        }
     }
 
     sourceSets.all {
@@ -96,25 +107,43 @@ kotlin {
             }
         }
 
+        create("wasmMain") {
+            dependsOn(commonMain)
+        }
+        create("wasmTest") {
+            dependsOn(commonTest)
+        }
 
         wasmJsMain {
-            kotlin {
-                srcDir 'wasmMain/src'
-            }
+            dependsOn(wasmMain)
             dependencies {
                 api 'org.jetbrains.kotlin:kotlin-stdlib-wasm-js'
             }
         }
 
         wasmJsTest {
-            kotlin {
-                srcDir 'wasmTest/src'
-            }
+            dependsOn(wasmTest)
             dependencies {
                 api 'org.jetbrains.kotlin:kotlin-test-wasm-js'
             }
         }
 
+        if (!isOkIoOrFormatTests) {
+            wasmWasiMain {
+                dependsOn(wasmMain)
+                dependencies {
+                    api 'org.jetbrains.kotlin:kotlin-stdlib-wasm-wasi'
+                }
+            }
+
+            wasmWasiTest {
+                dependsOn(wasmTest)
+                dependencies {
+                    api 'org.jetbrains.kotlin:kotlin-test-wasm-wasi'
+                }
+            }
+        }
+
         nativeMain.dependencies {
         }
     }
@@ -162,3 +191,9 @@ kotlin {
         }
     }
 }
+
+rootProject.extensions.findByType(org.jetbrains.kotlin.gradle.targets.js.nodejs.NodeJsRootExtension.class).with {
+    // canary nodejs that supports recent Wasm GC changes
+    it.nodeVersion = "21.0.0-v8-canary202309167e82ab1fa2"
+    it.nodeDownloadBaseUrl = "https://nodejs.org/download/v8-canary"
+}

integration-test/build.gradle

@@ -42,7 +42,10 @@ kotlin {
         }
     }
     wasmJs {
-        d8()
+        nodejs()
+    }
+    wasmWasi {
+        nodejs()
     }
     jvm {
         withJava()
@@ -102,12 +105,21 @@ kotlin {
                 api 'org.jetbrains.kotlin:kotlin-stdlib-wasm-js'
             }
         }
-
         wasmJsTest {
             dependencies {
                 api 'org.jetbrains.kotlin:kotlin-test-wasm-js'
             }
         }
+        wasmWasiMain {
+            dependencies {
+                api 'org.jetbrains.kotlin:kotlin-stdlib-wasm-wasi'
+            }
+        }
+        wasmWasiTest {
+            dependencies {
+                api 'org.jetbrains.kotlin:kotlin-test-wasm-wasi'
+            }
+        }
     }
 
     targets.all {
@@ -129,3 +141,13 @@ dependencies {
 }
 
 task run dependsOn "check"
+
+rootProject.extensions.findByType(org.jetbrains.kotlin.gradle.targets.js.nodejs.NodeJsRootExtension.class).with {
+    // canary nodejs that supports recent Wasm GC changes
+    it.nodeVersion = "21.0.0-v8-canary202309167e82ab1fa2"
+    it.nodeDownloadBaseUrl = "https://nodejs.org/download/v8-canary"
+}
+
+tasks.withType(org.jetbrains.kotlin.gradle.targets.js.npm.tasks.KotlinNpmInstallTask).configureEach {
+    args.add("--ignore-engines")
+}

integration-test/src/wasmJsMain/kotlin/sample/SampleWasm.kt

@@ -1,5 +1,5 @@
 /*
- * Copyright 2019 JetBrains s.r.o.
+ * Copyright 2023 JetBrains s.r.o.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -17,5 +17,5 @@
 package sample
 
 actual object Platform {
-    actual val name: String = "Wasm"
+    actual val name: String = "WasmJs"
 }

integration-test/src/wasmJsTest/kotlin/sample/SampleTestsWasm.kt

@@ -6,6 +6,6 @@ import kotlin.test.assertTrue
 class SampleTestsWasm {
     @Test
     fun testHello() {
-        assertTrue("Wasm" in hello())
+        assertTrue("WasmJs" in hello())
     }
 }

integration-test/src/wasmWasiMain/kotlin/sample/SampleWasm.kt

@@ -0,0 +1,21 @@
+/*
+ * Copyright 2023 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package sample
+
+actual object Platform {
+    actual val name: String = "WasmWasi"
+}

integration-test/src/wasmWasiTest/kotlin/sample/SampleTestsWasm.kt

@@ -0,0 +1,11 @@
+package sample
+
+import kotlin.test.Test
+import kotlin.test.assertTrue
+
+class SampleTestsWasm {
+    @Test
+    fun testHello() {
+        assertTrue("WasmWasi" in hello())
+    }
+}