Add API to get locations of collected script annotations

#KT-38404 fixed also: - Add wrapper class for the location combined with the location id - Add source code location parameters to external dependency resolvers - Add tests for locations in annotations - Add tests for order of annotation resolution for dependencies resolvers
2020-05-20 13:42:08 +02:00
parent 1539128c3f
commit 83087291df
19 changed files with 550 additions and 85 deletions
@@ -38,10 +38,10 @@ object ScriptWithMavenDepsConfiguration : ScriptCompilationConfiguration(
 private val resolver = CompoundDependenciesResolver(FileSystemDependenciesResolver(), MavenDependenciesResolver())

 fun configureMavenDepsOnAnnotations(context: ScriptConfigurationRefinementContext): ResultWithDiagnostics<ScriptCompilationConfiguration> {
-    val annotations = context.collectedData?.get(ScriptCollectedData.foundAnnotations)?.takeIf { it.isNotEmpty() }
+    val annotations = context.collectedData?.get(ScriptCollectedData.collectedAnnotations)?.takeIf { it.isNotEmpty() }
        ?: return context.compilationConfiguration.asSuccess()
    return runBlocking {
-        resolver.resolveFromAnnotations(annotations)
+        resolver.resolveFromScriptSourceAnnotations(annotations)
    }.onSuccess {
        context.compilationConfiguration.with {
            dependencies.append(JvmDependency(it))
@@ -33,6 +33,14 @@ data class ScriptDiagnostic(
     */
    enum class Severity { FATAL, ERROR, WARNING, INFO, DEBUG }

+    constructor(
+        code: Int,
+        message: String,
+        severity: Severity = Severity.ERROR,
+        locationWithId: SourceCode.LocationWithId?,
+        exception: Throwable? = null
+    ) : this(code, message, severity, locationWithId?.codeLocationId, locationWithId?.locationInText, exception)
+
    override fun toString(): String = render()

    /**
@@ -211,6 +219,12 @@ fun makeFailureResult(vararg reports: ScriptDiagnostic): ResultWithDiagnostics.F
 fun makeFailureResult(message: String, path: String? = null, location: SourceCode.Location? = null): ResultWithDiagnostics.Failure =
    ResultWithDiagnostics.Failure(message.asErrorDiagnostics(ScriptDiagnostic.unspecifiedError, path, location))

+/**
+ * Makes Failure result with diagnostic [message] with optional [locationWithId]
+ */
+fun makeFailureResult(message: String, locationWithId: SourceCode.LocationWithId?): ResultWithDiagnostics.Failure =
+    ResultWithDiagnostics.Failure(message.asErrorDiagnostics(ScriptDiagnostic.unspecifiedError, locationWithId))
+
 /**
 * Converts the receiver Throwable to the Failure results wrapper with optional [customMessage], [path] and [location]
 */
@@ -223,6 +237,17 @@ fun Throwable.asDiagnostics(
 ): ScriptDiagnostic =
    ScriptDiagnostic(code, customMessage ?: message ?: "$this", severity, path, location, this)

+/**
+ * Converts the receiver Throwable to the Failure results wrapper with optional [customMessage], [locationWithId]
+ */
+fun Throwable.asDiagnostics(
+    code: Int = ScriptDiagnostic.unspecifiedException,
+    customMessage: String? = null,
+    locationWithId: SourceCode.LocationWithId?,
+    severity: ScriptDiagnostic.Severity = ScriptDiagnostic.Severity.ERROR
+): ScriptDiagnostic =
+    ScriptDiagnostic(code, customMessage ?: message ?: "$this", severity, locationWithId, this)
+
 /**
 * Converts the receiver String to error diagnostic report with optional [path] and [location]
 */
@@ -233,6 +258,15 @@ fun String.asErrorDiagnostics(
 ): ScriptDiagnostic =
    ScriptDiagnostic(code, this, ScriptDiagnostic.Severity.ERROR, path, location)

+/**
+ * Converts the receiver String to error diagnostic report with optional [locationWithId]
+ */
+fun String.asErrorDiagnostics(
+    code: Int = ScriptDiagnostic.unspecifiedError,
+    locationWithId: SourceCode.LocationWithId?
+): ScriptDiagnostic =
+    ScriptDiagnostic(code, this, ScriptDiagnostic.Severity.ERROR, locationWithId)
+
 /**
 * Extracts the result value from the receiver wrapper or null if receiver represents a Failure
 */
@@ -51,8 +51,30 @@ interface SourceCode {
     * @param end optional range location end position (after the last char)
     */
    data class Location(val start: Position, val end: Position? = null) : Serializable
+
+    /**
+     * The source code location including the path to the file
+     * @param codeLocationId the file path or other script location identifier (see [SourceCode.locationId])
+     * @param locationInText concrete location of the source code in file
+     */
+    data class LocationWithId(val codeLocationId: String, val locationInText: Location) : Serializable
 }

+/**
+ * Annotation found during script source parsing along with its location
+ */
+data class ScriptSourceAnnotation<out A : Annotation>(
+    /**
+     * Annotation found during script source parsing
+     */
+    val annotation: A,
+
+    /**
+     * Location of annotation is script
+     */
+    val location: SourceCode.LocationWithId?
+)
+
 /**
 * The interface for the source code located externally
 */
@@ -91,6 +113,13 @@ class ScriptCollectedData(properties: Map<PropertiesCollection.Key<*>, Any>) : P
 */
 val ScriptCollectedDataKeys.foundAnnotations by PropertiesCollection.key<List<Annotation>>()

+/**
+ * The script file-level annotations and their locations found during script source parsing
+ */
+val ScriptCollectedDataKeys.collectedAnnotations by PropertiesCollection.key<List<ScriptSourceAnnotation<*>>>(getDefaultValue = {
+    get(ScriptCollectedData.foundAnnotations)?.map { ScriptSourceAnnotation(it, null) }
+})
+
 /**
 * The facade to the script data for compilation configuration refinement callbacks
 */
@@ -150,4 +179,4 @@ data class ScriptEvaluationConfigurationRefinementContext(
    val compiledScript: CompiledScript,
    val evaluationConfiguration: ScriptEvaluationConfiguration,
    val contextData: ScriptEvaluationContextData? = null
-)
+)
@@ -0,0 +1,15 @@
+/*
+ * Copyright 2010-2020 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 kotlin.script.experimental.util
+
+import kotlin.script.experimental.api.*
+
+inline fun <reified A : Annotation> Iterable<ScriptSourceAnnotation<*>>.filterByAnnotationType(
+): List<ScriptSourceAnnotation<A>> = filter { it.annotation is A }
+    .map {
+        @Suppress("UNCHECKED_CAST")
+        it as ScriptSourceAnnotation<A>
+    }
@@ -23,6 +23,7 @@ dependencies {
    testCompile(projectTests(":kotlin-scripting-dependencies"))
    testCompile(commonDep("junit"))
    testRuntimeOnly("org.slf4j:slf4j-nop:1.7.30")
+    testImplementation(kotlin("reflect"))
 }

 sourceSets {
@@ -13,6 +13,8 @@ import org.eclipse.aether.util.repository.AuthenticationBuilder
 import java.io.File
 import java.util.*
 import kotlin.script.experimental.api.ResultWithDiagnostics
+import kotlin.script.experimental.api.SourceCode
+import kotlin.script.experimental.api.asSuccess
 import kotlin.script.experimental.dependencies.ExternalDependenciesResolver
 import kotlin.script.experimental.dependencies.RepositoryCoordinates
 import kotlin.script.experimental.dependencies.impl.makeResolveFailureResult
@@ -51,7 +53,10 @@ class MavenDependenciesResolver : ExternalDependenciesResolver {
        if (this.isNotBlank() && this.count { it == ':' } >= 2) DefaultArtifact(this)
        else null

-    override suspend fun resolve(artifactCoordinates: String): ResultWithDiagnostics<List<File>> {
+    override suspend fun resolve(
+        artifactCoordinates: String,
+        sourceCodeLocation: SourceCode.LocationWithId?
+    ): ResultWithDiagnostics<List<File>> {

        val artifactId = artifactCoordinates.toMavenArtifact()!!

@@ -60,18 +65,21 @@ class MavenDependenciesResolver : ExternalDependenciesResolver {
            if (deps != null)
                return ResultWithDiagnostics.Success(deps.map { it.file })
        } catch (e: DependencyResolutionException) {
-            return makeResolveFailureResult(e.message ?: "unknown error")
+            return makeResolveFailureResult(e.message ?: "unknown error", sourceCodeLocation)
        }
-        return makeResolveFailureResult(allRepositories().map { "$it: $artifactId not found" })
+        return makeResolveFailureResult(allRepositories().map { "$it: $artifactId not found" }, sourceCodeLocation)
    }

    private fun tryResolveEnvironmentVariable(str: String) =
        if (str.startsWith("$")) System.getenv(str.substring(1)) ?: str
        else str

-    override fun addRepository(repositoryCoordinates: RepositoryCoordinates) {
+    override fun addRepository(
+        repositoryCoordinates: RepositoryCoordinates,
+        sourceCodeLocation: SourceCode.LocationWithId?
+    ): ResultWithDiagnostics<Boolean> {
        val url = repositoryCoordinates.toRepositoryUrlOrNull()
-            ?: throw IllegalArgumentException("Invalid Maven repository URL: ${repositoryCoordinates}")
+            ?: return false.asSuccess()
        val repo = RemoteRepository.Builder(
            repositoryCoordinates.string,
            "default",
@@ -91,5 +99,6 @@ class MavenDependenciesResolver : ExternalDependenciesResolver {
            }
        }
        repos.add(repo.build())
+        return true.asSuccess()
    }
 }
@@ -7,16 +7,21 @@ package kotlin.script.experimental.test

 import kotlinx.coroutines.runBlocking
 import org.junit.Assert
+import org.junit.Ignore
 import java.io.File
 import kotlin.contracts.ExperimentalContracts
+import kotlin.reflect.full.primaryConstructor
 import kotlin.script.experimental.dependencies.maven.MavenDependenciesResolver
 import kotlin.script.experimental.api.ResultWithDiagnostics
 import kotlin.script.experimental.api.valueOrThrow
+import kotlin.script.experimental.dependencies.DependsOn
+import kotlin.script.experimental.dependencies.Repository
+import kotlin.script.experimental.dependencies.resolveFromAnnotations

@ExperimentalContracts
 class MavenResolverTest : ResolversTestBase() {

-    fun resolveAndCheck(coordinates: String, checkBody: (Iterable<File>) -> Boolean = { true } ) {
+    fun resolveAndCheck(coordinates: String, checkBody: (Iterable<File>) -> Boolean = { true }) {
        val resolver = MavenDependenciesResolver()
        val result = runBlocking { resolver.resolve(coordinates) }
        if (result is ResultWithDiagnostics.Failure) {
@@ -44,4 +49,51 @@ class MavenResolverTest : ResolversTestBase() {
            files.any { it.extension == "pom" }
        }
    }
+
+    // Ignored - tests with custom repos often break the CI due to the caching issues
+    // TODO: find a way to enable iut back
+    @Ignore
+    fun ignore_testResolveFromAnnotationsWillResolveTheSameRegardlessOfAnnotationOrder() {
+        val dependsOnConstructor = DependsOn::class.primaryConstructor!!
+        val repositoryConstructor = Repository::class.primaryConstructor!!
+
+        // @DepensOn("eu.jrie.jetbrains:kotlin-shell-core:0.2")
+        val dependsOn = dependsOnConstructor.callBy(
+            mapOf(
+                dependsOnConstructor.parameters.first() to arrayOf("eu.jrie.jetbrains:kotlin-shell-core:0.2")
+            )
+        )
+
+        // @Repository("https://dl.bintray.com/kotlin/kotlin-eap", "https://dl.bintray.com/jakubriegel/kotlin-shell")
+        val repositories = repositoryConstructor.callBy(
+            mapOf(
+                repositoryConstructor.parameters.first() to arrayOf(
+                    "https://dl.bintray.com/kotlin/kotlin-eap",
+                    "https://dl.bintray.com/jakubriegel/kotlin-shell"
+                )
+            )
+        )
+
+        val annotationsWithReposFirst = listOf(repositories, dependsOn)
+        val annotationsWithDependsOnFirst = listOf(dependsOn, repositories)
+
+        val filesWithReposFirst = runBlocking {
+            MavenDependenciesResolver().resolveFromAnnotations(annotationsWithReposFirst)
+        }.valueOrThrow()
+
+        val filesWithDependsOnFirst = runBlocking {
+            MavenDependenciesResolver().resolveFromAnnotations(annotationsWithDependsOnFirst)
+        }.valueOrThrow()
+
+        // Tests that the jar was resolved
+        assert(
+            filesWithReposFirst.any { it.name.startsWith("kotlin-shell-core-") && it.extension == "jar" }
+        )
+        assert(
+            filesWithDependsOnFirst.any { it.name.startsWith("kotlin-shell-core-") && it.extension == "jar" }
+        )
+
+        // Test that the the same files are resolved regardless of annotation order
+        assertEquals(filesWithReposFirst.map { it.name }.sorted(), filesWithDependsOnFirst.map { it.name }.sorted())
+    }
 }
@@ -8,6 +8,8 @@ package kotlin.script.experimental.dependencies
 import java.io.File
 import kotlin.script.experimental.api.ResultWithDiagnostics
 import kotlin.script.experimental.api.ScriptDiagnostic
+import kotlin.script.experimental.api.SourceCode
+import kotlin.script.experimental.api.asSuccess
 import kotlin.script.experimental.dependencies.impl.makeResolveFailureResult

 class CompoundDependenciesResolver(private val resolvers: List<ExternalDependenciesResolver>) : ExternalDependenciesResolver {
@@ -22,25 +24,53 @@ class CompoundDependenciesResolver(private val resolvers: List<ExternalDependenc
        return resolvers.any { it.acceptsRepository(repositoryCoordinates) }
    }

-    override fun addRepository(repositoryCoordinates: RepositoryCoordinates) {
-        if (resolvers.count { it.tryAddRepository(repositoryCoordinates) } == 0)
-            throw Exception("Failed to detect repository type: $repositoryCoordinates")
+    override fun addRepository(
+        repositoryCoordinates: RepositoryCoordinates,
+        sourceCodeLocation: SourceCode.LocationWithId?
+    ): ResultWithDiagnostics<Boolean> {
+        var success = false
+        var repositoryAdded = false
+        val reports = mutableListOf<ScriptDiagnostic>()
+
+        for (resolver in resolvers) {
+            if (resolver.acceptsRepository(repositoryCoordinates)) {
+                when (val resolveResult = resolver.addRepository(repositoryCoordinates, sourceCodeLocation)) {
+                    is ResultWithDiagnostics.Success -> {
+                        success = true
+                        repositoryAdded = repositoryAdded || resolveResult.value
+                        reports.addAll(resolveResult.reports)
+                    }
+                    is ResultWithDiagnostics.Failure -> reports.addAll(resolveResult.reports)
+                }
+            }
+        }
+
+        return when {
+            success -> repositoryAdded.asSuccess(reports)
+            reports.isEmpty() -> makeResolveFailureResult(
+                "No dependency resolver found that recognizes the repository coordinates '$repositoryCoordinates'",
+                sourceCodeLocation
+            )
+            else -> ResultWithDiagnostics.Failure(reports)
+        }
    }

-    override suspend fun resolve(artifactCoordinates: String): ResultWithDiagnostics<List<File>> {
-
+    override suspend fun resolve(
+        artifactCoordinates: String,
+        sourceCodeLocation: SourceCode.LocationWithId?
+    ): ResultWithDiagnostics<List<File>> {
        val reports = mutableListOf<ScriptDiagnostic>()

        for (resolver in resolvers) {
            if (resolver.acceptsArtifact(artifactCoordinates)) {
-                when (val resolveResult = resolver.resolve(artifactCoordinates)) {
+                when (val resolveResult = resolver.resolve(artifactCoordinates, sourceCodeLocation)) {
                    is ResultWithDiagnostics.Failure -> reports.addAll(resolveResult.reports)
                    else -> return resolveResult
                }
            }
        }
        return if (reports.count() == 0) {
-            makeResolveFailureResult("No suitable dependency resolver found for artifact '$artifactCoordinates'")
+            makeResolveFailureResult("No suitable dependency resolver found for artifact '$artifactCoordinates'", sourceCodeLocation)
        } else {
            ResultWithDiagnostics.Failure(reports)
        }
@@ -7,6 +7,7 @@ package kotlin.script.experimental.dependencies

 import java.io.File
 import kotlin.script.experimental.api.ResultWithDiagnostics
+import kotlin.script.experimental.api.SourceCode
 import kotlin.script.experimental.api.valueOrNull

 open class RepositoryCoordinates(val string: String)
@@ -16,23 +17,21 @@ interface ExternalDependenciesResolver {
    fun acceptsRepository(repositoryCoordinates: RepositoryCoordinates): Boolean
    fun acceptsArtifact(artifactCoordinates: String): Boolean

-    suspend fun resolve(artifactCoordinates: String): ResultWithDiagnostics<List<File>>
-    fun addRepository(repositoryCoordinates: RepositoryCoordinates)
+    suspend fun resolve(
+        artifactCoordinates: String,
+        sourceCodeLocation: SourceCode.LocationWithId? = null
+    ): ResultWithDiagnostics<List<File>>
+
+    fun addRepository(
+        repositoryCoordinates: RepositoryCoordinates,
+        sourceCodeLocation: SourceCode.LocationWithId? = null
+    ): ResultWithDiagnostics<Boolean>
 }

 fun ExternalDependenciesResolver.acceptsRepository(repositoryCoordinates: String): Boolean =
    acceptsRepository(RepositoryCoordinates(repositoryCoordinates))

-fun ExternalDependenciesResolver.addRepository(repositoryCoordinates: String) = addRepository(RepositoryCoordinates(repositoryCoordinates))
-
-suspend fun ExternalDependenciesResolver.tryResolve(artifactCoordinates: String): List<File>? =
-    if (acceptsArtifact(artifactCoordinates)) resolve(artifactCoordinates).valueOrNull() else null
-
-fun ExternalDependenciesResolver.tryAddRepository(repositoryCoordinates: String) =
-    tryAddRepository(RepositoryCoordinates(repositoryCoordinates))
-
-fun ExternalDependenciesResolver.tryAddRepository(repositoryCoordinates: RepositoryCoordinates) =
-    if (acceptsRepository(repositoryCoordinates)) {
-        addRepository(repositoryCoordinates)
-        true
-    } else false
+fun ExternalDependenciesResolver.addRepository(
+    repositoryCoordinates: String,
+    sourceCodeLocation: SourceCode.LocationWithId? = null
+) = addRepository(RepositoryCoordinates(repositoryCoordinates), sourceCodeLocation)
@@ -7,6 +7,8 @@ package kotlin.script.experimental.dependencies

 import java.io.File
 import kotlin.script.experimental.api.ResultWithDiagnostics
+import kotlin.script.experimental.api.SourceCode
+import kotlin.script.experimental.api.asSuccess
 import kotlin.script.experimental.dependencies.impl.makeResolveFailureResult
 import kotlin.script.experimental.dependencies.impl.toRepositoryUrlOrNull

@@ -18,13 +20,24 @@ class FileSystemDependenciesResolver(vararg paths: File) : ExternalDependenciesR
    private fun RepositoryCoordinates.toFilePath() =
        (this.toRepositoryUrlOrNull()?.takeIf { it.protocol == "file" }?.path ?: string).toRepositoryFileOrNull()

-    override fun addRepository(repositoryCoordinates: RepositoryCoordinates) {
+    override fun addRepository(
+        repositoryCoordinates: RepositoryCoordinates,
+        sourceCodeLocation: SourceCode.LocationWithId?
+    ): ResultWithDiagnostics<Boolean> {
+        if (!acceptsRepository(repositoryCoordinates)) return false.asSuccess()
+
        val repoDir = repositoryCoordinates.toFilePath()
-            ?: throw IllegalArgumentException("Invalid repository location: '${repositoryCoordinates}'")
+            ?: return makeResolveFailureResult("Invalid repository location: '${repositoryCoordinates}'", sourceCodeLocation)
+
        localRepos.add(repoDir)
+
+        return true.asSuccess()
    }

-    override suspend fun resolve(artifactCoordinates: String): ResultWithDiagnostics<List<File>> {
+    override suspend fun resolve(
+        artifactCoordinates: String,
+        sourceCodeLocation: SourceCode.LocationWithId?
+    ): ResultWithDiagnostics<List<File>> {
        if (!acceptsArtifact(artifactCoordinates)) throw IllegalArgumentException("Path is invalid")

        val messages = mutableListOf<String>()
@@ -38,7 +51,7 @@ class FileSystemDependenciesResolver(vararg paths: File) : ExternalDependenciesR
                else -> return ResultWithDiagnostics.Success(listOf(file))
            }
        }
-        return makeResolveFailureResult(messages)
+        return makeResolveFailureResult(messages, sourceCodeLocation)
    }

    override fun acceptsArtifact(artifactCoordinates: String) =
@@ -6,9 +6,8 @@
 package kotlin.script.experimental.dependencies

 import java.io.File
-import kotlin.script.experimental.api.ResultWithDiagnostics
-import kotlin.script.experimental.api.flatMapSuccess
-import kotlin.script.experimental.api.makeFailureResult
+import kotlin.script.experimental.api.*
+import kotlin.script.experimental.util.filterByAnnotationType

 /**
 * A common annotation that could be used in a script to denote a dependency
@@ -33,22 +32,44 @@ annotation class Repository(vararg val repositoriesCoordinates: String)
 /**
 * An extension function that configures repositories and resolves artifacts denoted by the [Repository] and [DependsOn] annotations
 */
-suspend fun ExternalDependenciesResolver.resolveFromAnnotations(annotations: Iterable<Annotation>): ResultWithDiagnostics<List<File>> {
-    annotations.forEach { annotation ->
+suspend fun ExternalDependenciesResolver.resolveFromScriptSourceAnnotations(
+    annotations: Iterable<ScriptSourceAnnotation<*>>
+): ResultWithDiagnostics<List<File>> {
+    val reports = mutableListOf<ScriptDiagnostic>()
+    annotations.forEach { (annotation, locationWithId) ->
        when (annotation) {
            is Repository -> {
                for (coordinates in annotation.repositoriesCoordinates) {
-                    if (!tryAddRepository(coordinates))
-                        return makeFailureResult("Unrecognized repository coordinates: $coordinates")
+                    val added = addRepository(coordinates, locationWithId)
+                        .also { reports.addAll(it.reports) }
+                        .valueOr { return it }
+
+                    if (!added)
+                        return reports + makeFailureResult(
+                            "Unrecognized repository coordinates: $coordinates",
+                            locationWithId = locationWithId
+                        )
                }
            }
            is DependsOn -> {}
-            else -> return makeFailureResult("Unknown annotation ${annotation.javaClass}")
+            else -> return reports + makeFailureResult("Unknown annotation ${annotation.javaClass}", locationWithId = locationWithId)
        }
    }
-    return annotations.filterIsInstance(DependsOn::class.java)
-        .flatMap { it.artifactsCoordinates.asIterable() }
-        .flatMapSuccess { artifactCoordinates ->
-            resolve(artifactCoordinates)
+
+    return reports + annotations.filterByAnnotationType<DependsOn>()
+        .flatMapSuccess { (annotation, locationWithId) ->
+            annotation.artifactsCoordinates.asIterable().flatMapSuccess { artifactCoordinates ->
+                resolve(artifactCoordinates, locationWithId)
+            }
        }
 }
+
+/**
+ * An extension function that configures repositories and resolves artifacts denoted by the [Repository] and [DependsOn] annotations
+ */
+suspend fun ExternalDependenciesResolver.resolveFromAnnotations(
+    annotations: Iterable<Annotation>
+): ResultWithDiagnostics<List<File>> {
+    val scriptSourceAnnotations = annotations.map { ScriptSourceAnnotation(it, null) }
+    return resolveFromScriptSourceAnnotations(scriptSourceAnnotations)
+}
@@ -10,11 +10,16 @@ import java.net.URL
 import kotlin.script.experimental.dependencies.RepositoryCoordinates
 import kotlin.script.experimental.api.ResultWithDiagnostics
 import kotlin.script.experimental.api.ScriptDiagnostic
+import kotlin.script.experimental.api.SourceCode

-fun makeResolveFailureResult(message: String) = makeResolveFailureResult(listOf(message))
+fun makeResolveFailureResult(message: String, location: SourceCode.LocationWithId? = null) = makeResolveFailureResult(listOf(message), location)

-fun makeResolveFailureResult(messages: Iterable<String>) =
-    ResultWithDiagnostics.Failure(messages.map { ScriptDiagnostic(ScriptDiagnostic.unspecifiedError, it, ScriptDiagnostic.Severity.WARNING) })
+fun makeResolveFailureResult(messages: Iterable<String>, location: SourceCode.LocationWithId? = null) =
+    ResultWithDiagnostics.Failure(
+        messages.map {
+            ScriptDiagnostic(ScriptDiagnostic.unspecifiedError, it, ScriptDiagnostic.Severity.WARNING, location)
+        }
+    )

 fun RepositoryCoordinates.toRepositoryUrlOrNull(): URL? =
    try {
@@ -9,6 +9,8 @@ import java.io.File
 import kotlin.contracts.ExperimentalContracts
 import kotlin.script.experimental.dependencies.*
 import kotlin.script.experimental.api.ResultWithDiagnostics
+import kotlin.script.experimental.api.SourceCode
+import kotlin.script.experimental.api.asSuccess
 import kotlin.script.experimental.dependencies.impl.makeResolveFailureResult

@ExperimentalContracts
@@ -83,14 +85,23 @@ class ResolversTest : ResolversTestBase() {

        override fun acceptsArtifact(artifactCoordinates: String): Boolean = acceptsArt(artifactCoordinates)

-        override suspend fun resolve(artifactCoordinates: String): ResultWithDiagnostics<List<File>> {
+        override suspend fun resolve(
+            artifactCoordinates: String,
+            sourceCodeLocation: SourceCode.LocationWithId?
+        ): ResultWithDiagnostics<List<File>> {
            if (!acceptsArtifact(artifactCoordinates)) throw Exception("Path is invalid")
-            val file = doResolve(artifactCoordinates) ?: return makeResolveFailureResult("Failed to resolve '$artifactCoordinates'")
+            val file = doResolve(artifactCoordinates)
+                ?: return makeResolveFailureResult("Failed to resolve '$artifactCoordinates'", sourceCodeLocation)
            return ResultWithDiagnostics.Success(listOf(file))
        }

-        override fun addRepository(repositoryCoordinates: RepositoryCoordinates) {
+        override fun addRepository(
+            repositoryCoordinates: RepositoryCoordinates,
+            sourceCodeLocation: SourceCode.LocationWithId?
+        ): ResultWithDiagnostics<Boolean> {
+            if (!acceptsRepository(repositoryCoordinates)) return false.asSuccess()
            addRepo(repositoryCoordinates.string)
+            return true.asSuccess()
        }

        override fun acceptsRepository(repositoryCoordinates: RepositoryCoordinates): Boolean {
@@ -36,7 +36,10 @@ class IvyResolver : ExternalDependenciesResolver {
    override fun acceptsRepository(repositoryCoordinates: RepositoryCoordinates): Boolean =
        repositoryCoordinates.toRepositoryUrlOrNull() != null

-    override suspend fun resolve(artifactCoordinates: String): ResultWithDiagnostics<List<File>> {
+    override suspend fun resolve(
+        artifactCoordinates: String,
+        sourceCodeLocation: SourceCode.LocationWithId?
+    ): ResultWithDiagnostics<List<File>> {

        val artifactType = artifactCoordinates.substringAfterLast('@', "").trim()
        val stringCoordinates = if (artifactType.isNotEmpty()) artifactCoordinates.removeSuffix("@$artifactType") else artifactCoordinates
@@ -46,20 +49,26 @@ class IvyResolver : ExternalDependenciesResolver {
                resolveArtifact(
                    artifactId[0], artifactId[1], artifactId[2],
                    if (artifactId.size > 3) artifactId[3] else null,
-                    if (artifactType.isNotEmpty()) artifactType else null
+                    if (artifactType.isNotEmpty()) artifactType else null,
+                    sourceCodeLocation
                )
            } catch (e: Exception) {
-                makeFailureResult(e.asDiagnostics())
+                makeFailureResult(e.asDiagnostics(locationWithId = sourceCodeLocation))
            }
        } else {
-            makeFailureResult("Unrecognized set of arguments to ivy resolver: $stringCoordinates")
+            makeFailureResult("Unrecognized set of arguments to ivy resolver: $stringCoordinates", sourceCodeLocation)
        }
    }

    private val ivyResolvers = arrayListOf<URLResolver>()

    private fun resolveArtifact(
-        groupId: String, artifactName: String, revision: String, conf: String? = null, type: String? = null
+        groupId: String,
+        artifactName: String,
+        revision: String,
+        conf: String? = null,
+        type: String? = null,
+        sourceCodeLocation: SourceCode.LocationWithId? = null
    ): ResultWithDiagnostics<List<File>> {

        if (ivyResolvers.isEmpty() || ivyResolvers.none { it.name == "central" }) {
@@ -118,23 +127,27 @@ class IvyResolver : ExternalDependenciesResolver {
        XmlModuleDescriptorWriter.write(moduleDescriptor, ivyFile)
        val report = ivy.resolve(ivyFile.toURI().toURL(), resolveOptions)

-        val diagnostics = report.allProblemMessages.map { it.asErrorDiagnostics() }
+        val diagnostics = report.allProblemMessages.map { it.asErrorDiagnostics(locationWithId = sourceCodeLocation) }

        return if (report.hasError()) makeFailureResult(diagnostics)
        else report.allArtifactsReports.map { it.localFile }.asSuccess(diagnostics)
    }

-    override fun addRepository(repositoryCoordinates: RepositoryCoordinates) {
+    override fun addRepository(
+        repositoryCoordinates: RepositoryCoordinates,
+        sourceCodeLocation: SourceCode.LocationWithId?
+    ): ResultWithDiagnostics<Boolean> {
        val url = repositoryCoordinates.toRepositoryUrlOrNull()
-        if (url != null) {
-            ivyResolvers.add(
-                IBiblioResolver().apply {
-                    isM2compatible = true
-                    name = url.host
-                    root = url.toExternalForm()
-                }
-            )
-        }
+            ?: return false.asSuccess()
+
+        ivyResolvers.add(
+            IBiblioResolver().apply {
+                isM2compatible = true
+                name = url.host
+                root = url.toExternalForm()
+            }
+        )
+        return true.asSuccess()
    }

    companion object {
@@ -26,6 +26,7 @@ import kotlin.script.experimental.jvmhost.CompiledScriptJarsCache
 import kotlin.script.experimental.jvmhost.jsr223.configureProvidedPropertiesFromJsr223Context
 import kotlin.script.experimental.jvmhost.jsr223.importAllBindings
 import kotlin.script.experimental.jvmhost.jsr223.jsr223
+import kotlin.script.experimental.util.filterByAnnotationType

@Suppress("unused")
@KotlinScript(
@@ -120,22 +121,22 @@ class MainKtsConfigurator : RefineScriptCompilationConfigurationHandler {
            )
        }

-        val annotations = context.collectedData?.get(ScriptCollectedData.foundAnnotations)?.takeIf { it.isNotEmpty() }
+        val annotations = context.collectedData?.get(ScriptCollectedData.collectedAnnotations)?.takeIf { it.isNotEmpty() }
            ?: return context.compilationConfiguration.asSuccess()

        val scriptBaseDir = (context.script as? FileBasedScriptSource)?.file?.parentFile
-        val importedSources = annotations.flatMap {
-            (it as? Import)?.paths?.map { sourceName ->
+        val importedSources = annotations.filterByAnnotationType<Import>().flatMap {
+            it.annotation.paths.map { sourceName ->
                FileScriptSource(scriptBaseDir?.resolve(sourceName) ?: File(sourceName))
-            } ?: emptyList()
+            }
        }
-        val compileOptions = annotations.flatMap {
-            (it as? CompilerOptions)?.options?.toList() ?: emptyList()
+        val compileOptions = annotations.filterByAnnotationType<CompilerOptions>().flatMap {
+            it.annotation.options.toList()
        }

        val resolveResult = try {
            runBlocking {
-                resolver.resolveFromAnnotations( annotations.filter { it is DependsOn || it is Repository })
+                resolver.resolveFromScriptSourceAnnotations(annotations.filter { it.annotation is DependsOn || it.annotation is Repository })
            }
        } catch (e: Throwable) {
            ResultWithDiagnostics.Failure(*diagnostics.toTypedArray(), e.asDiagnostics(path = context.script.locationId))
@@ -6,11 +6,13 @@
 package org.jetbrains.kotlin.scripting.resolve

 import com.intellij.openapi.application.ApplicationManager
+import com.intellij.openapi.editor.Document
 import com.intellij.openapi.project.Project
 import com.intellij.openapi.util.text.StringUtil
 import com.intellij.openapi.vfs.CharsetToolkit
 import com.intellij.openapi.vfs.LocalFileSystem
 import com.intellij.openapi.vfs.VirtualFile
+import com.intellij.psi.PsiElement
 import com.intellij.psi.PsiFile
 import com.intellij.psi.PsiManager
 import com.intellij.testFramework.LightVirtualFile
@@ -18,6 +20,8 @@ import kotlinx.coroutines.runBlocking
 import org.jetbrains.kotlin.idea.KotlinLanguage
 import org.jetbrains.kotlin.psi.KtAnnotationEntry
 import org.jetbrains.kotlin.psi.KtFile
+import org.jetbrains.kotlin.psi.psiUtil.endOffset
+import org.jetbrains.kotlin.psi.psiUtil.startOffset
 import org.jetbrains.kotlin.scripting.definitions.KotlinScriptDefinition
 import org.jetbrains.kotlin.scripting.definitions.ScriptDefinition
 import org.jetbrains.kotlin.scripting.withCorrectExtension
@@ -41,7 +45,9 @@ internal fun VirtualFile.loadAnnotations(
 ): List<Annotation> =
 // TODO_R: report error on failure to load annotation class
    ApplicationManager.getApplication().runReadAction<List<Annotation>> {
-        this.getAnnotationEntries(project).construct(classLoader, acceptedAnnotations, project)
+        this.getAnnotationEntries(project)
+            .construct(classLoader, acceptedAnnotations, project)
+            .map { it.first }
    }

 internal fun VirtualFile.getAnnotationEntries(project: Project): Iterable<KtAnnotationEntry> {
@@ -55,8 +61,7 @@ internal fun VirtualFile.getAnnotationEntries(project: Project): Iterable<KtAnno
 * The implementation of the SourceCode for a script located in a virtual file
 */
 open class VirtualFileScriptSource(val virtualFile: VirtualFile, private val preloadedText: String? = null) :
-    FileBasedScriptSource()
-{
+    FileBasedScriptSource() {
    override val file: File get() = File(virtualFile.path)
    override val externalLocation: URL get() = URL(virtualFile.url)
    override val text: String by lazy { preloadedText ?: virtualFile.inputStream.bufferedReader().readText() }
@@ -354,27 +359,60 @@ fun getScriptCollectedData(
                jvmGetScriptingClass(ann, contextClassLoader, hostConfiguration) as? KClass<Annotation> // TODO errors
            }
        }.orEmpty()
-    val annotations = scriptFile.annotationEntries.construct(contextClassLoader, acceptedAnnotations, project)
+    val annotations = scriptFile.annotationEntries.construct(
+        contextClassLoader,
+        acceptedAnnotations,
+        project,
+        scriptFile.viewProvider.document,
+        scriptFile.virtualFilePath
+    )
    return ScriptCollectedData(
        mapOf(
-            ScriptCollectedData.foundAnnotations to annotations
+            ScriptCollectedData.collectedAnnotations to annotations,
+            ScriptCollectedData.foundAnnotations to annotations.map { it.annotation }
        )
    )
 }

+private fun Iterable<KtAnnotationEntry>.construct(
+    classLoader: ClassLoader?, acceptedAnnotations: List<KClass<out Annotation>>, project: Project, document: Document?, filePath: String
+): List<ScriptSourceAnnotation<*>> = construct(classLoader, acceptedAnnotations, project).map { (annotation, psiAnn) ->
+    ScriptSourceAnnotation(
+        annotation = annotation,
+        location = document?.let { document ->
+            SourceCode.LocationWithId(
+                codeLocationId = filePath,
+                locationInText = psiAnn.location(document)
+            )
+        }
+    )
+}
+
 private fun Iterable<KtAnnotationEntry>.construct(
    classLoader: ClassLoader?, acceptedAnnotations: List<KClass<out Annotation>>, project: Project
-): List<Annotation> =
+): List<Pair<Annotation, KtAnnotationEntry>> =
    mapNotNull { psiAnn ->
        // TODO: consider advanced matching using semantic similar to actual resolving
        acceptedAnnotations.find { ann ->
            psiAnn.typeName.let { it == ann.simpleName || it == ann.qualifiedName }
        }?.let {
            @Suppress("UNCHECKED_CAST")
-            (constructAnnotation(
+            constructAnnotation(
                psiAnn,
                (classLoader ?: ClassLoader.getSystemClassLoader()).loadClass(it.qualifiedName).kotlin as KClass<out Annotation>,
                project
-            ))
+            ) to psiAnn
        }
-    }
+    }
+
+private fun PsiElement.location(document: Document): SourceCode.Location {
+    val start = document.offsetToPosition(startOffset)
+    val end = if (endOffset > startOffset) document.offsetToPosition(endOffset) else null
+    return SourceCode.Location(start, end)
+}
+
+private fun Document.offsetToPosition(offset: Int): SourceCode.Position {
+    val line = getLineNumber(offset)
+    val column = offset - getLineStartOffset(line)
+    return SourceCode.Position(line + 1, column + 1, offset)
+}
@@ -0,0 +1,7 @@
+
+@file:Fib(4)
+
+println("fib(1)=${FIB_1}")
+println("fib(2)=${FIB_2}")
+println("fib(3)=${FIB_3}")
+println("fib(4)=${FIB_4}")
@@ -0,0 +1,5 @@
+
+@file:Fib(number = 4)
+@file:Fib(number = 0)
+
+print("fib(4)=${FIB_4}")
@@ -0,0 +1,182 @@
+/*
+ * Copyright 2010-2020 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.scripting.compiler.test
+
+import com.intellij.openapi.Disposable
+import junit.framework.TestCase
+import kotlinx.coroutines.runBlocking
+import org.jetbrains.kotlin.cli.jvm.compiler.EnvironmentConfigFiles
+import org.jetbrains.kotlin.cli.jvm.compiler.KotlinCoreEnvironment
+import org.jetbrains.kotlin.script.loadScriptingPlugin
+import org.jetbrains.kotlin.scripting.compiler.plugin.TestDisposable
+import org.jetbrains.kotlin.scripting.compiler.plugin.impl.ScriptJvmCompilerFromEnvironment
+import org.jetbrains.kotlin.scripting.configuration.ScriptingConfigurationKeys
+import org.jetbrains.kotlin.scripting.definitions.ScriptDefinition
+import org.jetbrains.kotlin.scripting.definitions.ScriptDefinitionProvider
+import org.jetbrains.kotlin.test.ConfigurationKind
+import org.jetbrains.kotlin.test.KotlinTestUtils
+import org.jetbrains.kotlin.test.TestJdkKind
+import org.junit.Assert
+import java.io.File
+import kotlin.script.experimental.annotations.KotlinScript
+import kotlin.script.experimental.api.*
+import kotlin.script.experimental.host.ScriptingHostConfiguration
+import kotlin.script.experimental.host.toScriptSource
+import kotlin.script.experimental.jvm.*
+import kotlin.script.experimental.util.filterByAnnotationType
+
+
+private const val testDataPath = "plugins/scripting/scripting-compiler/testData/compiler/compileTimeFibonacci"
+
+class CompileTimeFibonacciTest : TestCase() {
+    private val testRootDisposable: Disposable = TestDisposable()
+
+    fun testFibonacciWithSupportedNumbersImplementsTheCorrectConstants() {
+        val outputLines = runScript("supported.fib.kts")
+            .valueOr { failure ->
+                val message = failure.reports.joinToString("\n") { it.message }
+                kotlin.test.fail("supported.fib.kts was expected to succeed:\n\n${message}")
+            }
+            .lines()
+            .filter { it.isNotBlank() }
+
+        Assert.assertEquals(4, outputLines.count())
+        Assert.assertEquals("fib(1)=1", outputLines[0])
+        Assert.assertEquals("fib(2)=1", outputLines[1])
+        Assert.assertEquals("fib(3)=2", outputLines[2])
+        Assert.assertEquals("fib(4)=3", outputLines[3])
+    }
+
+    // This tests if the annotations delivered with the correct location
+    // and that scripts can return error messages at the location of the annotation
+    fun testFibonacciWithUnsupportedNumbersEmitsErrorAtLocation() {
+        when (val result = runScript("unsupported.fib.kts")) {
+            is ResultWithDiagnostics.Success ->
+                kotlin.test.fail("supported.fib.kts was expected to fail with a compiler error from refinement")
+
+            is ResultWithDiagnostics.Failure -> {
+                val error = result.reports.first()
+
+                val expectedErrorMessage = """
+                    (plugins/scripting/scripting-compiler/testData/compiler/compileTimeFibonacci/unsupported.fib.kts:3:1) Fibonacci of non-positive numbers like 0 are not supported
+                """.trimIndent()
+                Assert.assertEquals(expectedErrorMessage, error.message)
+                // TODO: the location is not in the diagnostics because the `MessageCollector` defined in KotlinTestUtils,
+                //  throws the reports as `AssertionException`s. Evaluate using a different compiler configuration.
+//                Assert.assertEquals(3, error.location?.start?.line)
+//                Assert.assertEquals(1, error.location?.start?.col)
+//                Assert.assertEquals(3, error.location?.end?.line)
+//                Assert.assertEquals(14, error.location?.end?.col)
+            }
+        }
+    }
+
+    private fun runScript(scriptPath: String): ResultWithDiagnostics<String> {
+        val source = File(testDataPath, scriptPath).toScriptSource()
+        return compileScript(source)
+            .onSuccess { compiled ->
+                captureOut {
+                    val evaluator = BasicJvmScriptEvaluator()
+                    runBlocking {
+                        evaluator(compiled)
+                    }
+                }.asSuccess()
+            }
+    }
+
+    private fun compileScript(
+        script: SourceCode
+    ): ResultWithDiagnostics<CompiledScript> {
+        val configuration = KotlinTestUtils.newConfiguration(ConfigurationKind.NO_KOTLIN_REFLECT, TestJdkKind.FULL_JDK).apply {
+            val hostConfiguration = ScriptingHostConfiguration(defaultJvmScriptingHostConfiguration)
+            add(
+                ScriptingConfigurationKeys.SCRIPT_DEFINITIONS,
+                ScriptDefinition.FromTemplate(hostConfiguration, CompileTimeFibonacci::class, ScriptDefinition::class)
+            )
+            loadScriptingPlugin(this)
+        }
+
+        val environment = KotlinCoreEnvironment.createForTests(testRootDisposable, configuration, EnvironmentConfigFiles.JVM_CONFIG_FILES)
+        val scriptCompiler = ScriptJvmCompilerFromEnvironment(environment)
+        val scriptDefinition = ScriptDefinitionProvider.getInstance(environment.project)!!.findDefinition(script)!!
+
+        val scriptCompilationConfiguration = scriptDefinition.compilationConfiguration.with {
+            jvm {
+                dependenciesFromCurrentContext(wholeClasspath = true)
+            }
+        }
+
+        return scriptCompiler.compile(script, scriptCompilationConfiguration)
+    }
+}
+
+// Test Script with Compile Time Fibonacci Computation
+
+@KotlinScript(
+    fileExtension = "fib.kts",
+    compilationConfiguration = CompileTimeFibonacciConfiguration::class
+)
+abstract class CompileTimeFibonacci
+
+object CompileTimeFibonacciConfiguration : ScriptCompilationConfiguration(
+    {
+        fun fibUntil(number: Int): List<Int> {
+            require(number > 0)
+            if (number == 1) {
+                return listOf(1)
+            }
+            if (number == 2) {
+                return listOf(1, 1)
+            }
+
+            val previous = fibUntil(number - 1)
+            return previous + (previous.secondToLast() + previous.last())
+        }
+
+        defaultImports(Fib::class)
+        jvm {
+            dependenciesFromCurrentContext(wholeClasspath = true)
+        }
+        refineConfiguration {
+            onAnnotations(Fib::class) { context: ScriptConfigurationRefinementContext ->
+                val maxFibonacciNumber = context
+                    .collectedData
+                    ?.get(ScriptCollectedData.collectedAnnotations)
+                    ?.filterByAnnotationType<Fib>()
+                    ?.mapSuccess { (fib, location) ->
+                        fib.number.takeIf { it > 0 }?.asSuccess()
+                            ?: makeFailureResult(
+                                message = "Fibonacci of non-positive numbers like ${fib.number} are not supported",
+                                locationWithId = location
+                            )
+                    }
+                    ?.valueOr { return@onAnnotations it }
+                    ?.max() ?: return@onAnnotations context.compilationConfiguration.asSuccess()
+
+                val sourceCode = fibUntil(maxFibonacciNumber)
+                    .mapIndexed { index, number -> "val FIB_${index + 1} = $number" }
+                    .joinToString("\n")
+
+                val file = createTempFile("CompileTimeFibonacci", ".fib.kts")
+                    .apply {
+                        deleteOnExit()
+                        writeText(sourceCode)
+                    }
+
+                ScriptCompilationConfiguration(context.compilationConfiguration) {
+                    importScripts.append(file.toScriptSource())
+                }.asSuccess()
+            }
+        }
+    }
+)
+
+@Target(AnnotationTarget.FILE)
+@Repeatable
+@Retention(AnnotationRetention.SOURCE)
+annotation class Fib(val number: Int)
+
+private fun <T> List<T>.secondToLast(): T = this[count() - 2]