Add simple script example project

origin: https://github.com/JetBrains/kotlin/tree/master/libraries/examples/scripting/jvm-simple-script

Author: ligee

jvm/basic/jvm-simple-script/host/build.gradle.kts

@@ -0,0 +1,13 @@
+
+plugins {
+    kotlin("jvm")
+}
+
+val kotlinVersion: String by rootProject.extra
+
+dependencies {
+    implementation(project(":jvm:basic:jvm-simple-script:script"))
+    implementation("org.jetbrains.kotlin:kotlin-scripting-jvm-host:$kotlinVersion")
+    testImplementation("junit:junit:4.12")
+}
+

jvm/basic/jvm-simple-script/host/src/main/kotlin/org/jetbrains/kotlin/script/examples/jvm/simple/host/host.kt

@@ -0,0 +1,55 @@
+/*
+ * Copyright 2010-2018 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/LICENSE.txt file.
+ */
+
+package org.jetbrains.kotlin.script.examples.jvm.simple.host
+
+import org.jetbrains.kotlin.script.examples.jvm.simple.SimpleScript
+import java.io.File
+import kotlin.script.experimental.api.EvaluationResult
+import kotlin.script.experimental.api.ResultWithDiagnostics
+import kotlin.script.experimental.host.toScriptSource
+import kotlin.script.experimental.jvm.dependenciesFromClassloader
+import kotlin.script.experimental.jvm.dependenciesFromCurrentContext
+import kotlin.script.experimental.jvm.jvm
+import kotlin.script.experimental.jvm.updateClasspath
+import kotlin.script.experimental.jvmhost.BasicJvmScriptingHost
+import kotlin.script.experimental.jvmhost.createJvmCompilationConfigurationFromTemplate
+
+fun evalFile(scriptFile: File): ResultWithDiagnostics<EvaluationResult> {
+    val compilationConfiguration = createJvmCompilationConfigurationFromTemplate<SimpleScript> {
+        jvm {
+            // configure dependencies for compilation, they should contain at least the script base class and
+            // its dependencise
+            // variant 1: try to extract current classpath and take only a path to the specified "script.jar"
+            dependenciesFromCurrentContext(
+                "script" /* script library jar name (exact or without a version) */
+            )
+            // variant 2: try to extract current classpath and use it for the compilation without filtering
+//            dependenciesFromCurrentContext(wholeClasspath = true)
+            // variant 3: try to extract a classpath from a particular classloader (or Thread.contextClassLoader by default)
+            // filtering as in the variat 1 is supported too
+//            dependenciesFromClassloader(classLoader = SimpleScript::class.java.classLoader, wholeClasspath = true)
+            // variant 4: explicit classpath
+//            updateClasspath(listOf(File("/path/to/jar")))
+        }
+    }
+
+    return BasicJvmScriptingHost().eval(scriptFile.toScriptSource(), compilationConfiguration, null)
+}
+
+fun main(vararg args: String) {
+    if (args.size != 1) {
+        println("usage: <app> <script file>")
+    } else {
+        val scriptFile = File(args[0])
+        println("Executing script $scriptFile")
+
+        val res = evalFile(scriptFile)
+
+        res.reports.forEach {
+            println(" : ${it.message}" + if (it.exception == null) "" else ": ${it.exception}")
+        }
+    }
+}

jvm/basic/jvm-simple-script/host/src/test/kotlin/org/jetbrains/kotlin/script/examples/jvm/simple/test/simpleTest.kt

@@ -0,0 +1,36 @@
+/*
+ * Copyright 2000-2020 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/LICENSE.txt file.
+ */
+
+package org.jetbrains.kotlin.script.examples.jvm.simple.test
+
+import org.jetbrains.kotlin.script.examples.jvm.simple.host.evalFile
+import org.junit.Assert
+import java.io.File
+import org.junit.Test
+import kotlin.script.experimental.api.ResultWithDiagnostics
+
+class SimpleTest {
+
+    @Test
+    fun testSimple() {
+        val res = evalFile(File("testData/hello.simplescript.kts"))
+
+        Assert.assertTrue(
+            "test failed:\n  ${res.reports.joinToString("\n  ") { it.message + if (it.exception == null) "" else ": ${it.exception}" }}",
+            res is ResultWithDiagnostics.Success
+        )
+    }
+
+    @Test
+    fun testError() {
+        val res = evalFile(File("testData/error.simplescript.kts"))
+
+        Assert.assertTrue(
+            "test failed - expecting a failure with the message \"Unresolved reference: abracadabra\" but received " +
+                    (if (res is ResultWithDiagnostics.Failure) "failure" else "success") +
+                    ":\n  ${res.reports.joinToString("\n  ") { it.message + if (it.exception == null) "" else ": ${it.exception}" }}",
+            res is ResultWithDiagnostics.Failure && res.reports.any { it.message.contains("Unresolved reference: abracadabra") })
+    }
+}

jvm/basic/jvm-simple-script/host/testData/error.simplescript.kts

@@ -0,0 +1,3 @@
+
+abracadabra("Hello, World!")
+

jvm/basic/jvm-simple-script/host/testData/hello.simplescript.kts

@@ -0,0 +1,3 @@
+
+println("Hello, World!")
+

jvm/basic/jvm-simple-script/script/build.gradle.kts

@@ -0,0 +1,11 @@
+
+plugins {
+    kotlin("jvm")
+}
+
+val kotlinVersion: String by rootProject.extra
+
+dependencies {
+    implementation("org.jetbrains.kotlin:kotlin-scripting-jvm:$kotlinVersion")
+}
+

jvm/basic/jvm-simple-script/script/src/main/kotlin/org/jetbrains/kotlin/script/examples/jvm/simple/scriptDef.kt

@@ -0,0 +1,11 @@
+/*
+ * Copyright 2000-2018 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/LICENSE.txt file.
+ */
+
+package org.jetbrains.kotlin.script.examples.jvm.simple
+
+import kotlin.script.experimental.annotations.KotlinScript
+
+@KotlinScript(fileExtension = "simplescript.kts")
+abstract class SimpleScript

settings.gradle.kts

@@ -5,3 +5,7 @@ pluginManagement {
         maven { url = uri("https://dl.bintray.com/kotlin/kotlin-eap") }
     }
 }
+
+include("jvm:basic:jvm-simple-script:script")
+include("jvm:basic:jvm-simple-script:host")
+