Improve diagnostics for runtime versions consistency checker

- report the diagnostic on the actual problematic file
- output the list of all runtime jars if min version != max version

compiler/cli/cli-common/src/org/jetbrains/kotlin/cli/common/messages/CompilerMessageLocation.kt

@@ -28,14 +28,15 @@ data class CompilerMessageLocation private constructor(
             path + (if (line != -1 || column != -1) " ($line:$column)" else "")
 
     companion object {
-        @JvmField val NO_LOCATION: CompilerMessageLocation = CompilerMessageLocation(null, -1, -1, null)
+        @JvmField
+        val NO_LOCATION: CompilerMessageLocation = create(null)
 
-        @JvmStatic fun create(
-                path: String?,
-                line: Int,
-                column: Int,
-                lineContent: String?
-        ): CompilerMessageLocation =
+        @JvmStatic
+        fun create(path: String?): CompilerMessageLocation =
+                CompilerMessageLocation(path, -1, -1, null)
+
+        @JvmStatic
+        fun create(path: String?, line: Int, column: Int, lineContent: String?): CompilerMessageLocation =
                 if (path == null) NO_LOCATION else CompilerMessageLocation(path, line, column, lineContent)
 
         private val serialVersionUID: Long = 8228357578L

compiler/cli/src/org/jetbrains/kotlin/cli/common/messages/AnalyzerWithCompilerReport.kt

@@ -229,9 +229,8 @@ class AnalyzerWithCompilerReport(private val messageCollector: MessageCollector)
                     severity,
                     "Class '" + JvmClassName.byClassId(data.classId) + "' was compiled with an incompatible version of Kotlin. " +
                     "The binary version of its bytecode is " + data.actualVersion + ", expected version is " + data.expectedVersion,
-                    CompilerMessageLocation.create(toSystemDependentName(data.filePath), -1, -1, null)
+                    CompilerMessageLocation.create(toSystemDependentName(data.filePath))
             )
         }
-
     }
 }

compiler/cli/src/org/jetbrains/kotlin/cli/jvm/JvmRuntimeVersionsConsistencyChecker.kt

@@ -17,6 +17,7 @@
 package org.jetbrains.kotlin.cli.jvm
 
 import com.intellij.openapi.diagnostic.Logger
+import com.intellij.openapi.vfs.VfsUtilCore
 import com.intellij.openapi.vfs.VirtualFile
 import org.jetbrains.kotlin.cli.common.messages.CompilerMessageLocation
 import org.jetbrains.kotlin.cli.common.messages.CompilerMessageSeverity
@@ -106,9 +107,9 @@ object JvmRuntimeVersionsConsistencyChecker {
     fun checkCompilerClasspathConsistency(
             messageCollector: MessageCollector,
             languageVersionSettings: LanguageVersionSettings?,
-            classpathJars: List<VirtualFile>
+            classpathJarRoots: List<VirtualFile>
     ) {
-        val runtimeJarsInfo = collectRuntimeJarsInfo(classpathJars)
+        val runtimeJarsInfo = collectRuntimeJarsInfo(classpathJarRoots)
         if (!runtimeJarsInfo.hasAnyJarsToCheck) return
 
         val languageVersion =
@@ -128,13 +129,13 @@ object JvmRuntimeVersionsConsistencyChecker {
 
     private fun checkNotNewerThanCompiler(messageCollector: MessageCollector, jar: KotlinLibraryFile) {
         if (jar.version > CURRENT_COMPILER_VERSION) {
-            messageCollector.issue("Run-time JAR file $jar is newer than compiler version $CURRENT_COMPILER_VERSION")
+            messageCollector.issue(jar.file, "Runtime JAR file has version ${jar.version} which is newer than compiler version $CURRENT_COMPILER_VERSION")
         }
     }
 
     private fun checkCompatibleWithLanguageVersion(messageCollector: MessageCollector, jar: KotlinLibraryFile, languageVersion: MavenComparableVersion) {
         if (jar.version < languageVersion) {
-            messageCollector.issue("Run-time JAR file $jar is older than required for language version $languageVersion")
+            messageCollector.issue(jar.file, "Runtime JAR file has version ${jar.version} which is older than required for language version $languageVersion")
         }
     }
 
@@ -143,31 +144,37 @@ object JvmRuntimeVersionsConsistencyChecker {
         val newestCoreJar = runtimeJarsInfo.coreJars.maxBy { it.version } ?: return
 
         if (oldestCoreJar.version != newestCoreJar.version) {
-            messageCollector.issue("Run-time JAR file $oldestCoreJar is not compatible with JAR file $newestCoreJar")
+            messageCollector.issue(null, buildString {
+                appendln("Runtime JAR files in the classpath must have the same version. These files were found in the classpath:")
+                for (jar in runtimeJarsInfo.coreJars) {
+                    appendln("    ${jar.file.path} (version ${jar.version})")
+                }
+            }.trimEnd())
         }
     }
 
-    private fun MessageCollector.issue(message: String) {
-        report(VERSION_ISSUE_SEVERITY, message, CompilerMessageLocation.NO_LOCATION)
+    private fun MessageCollector.issue(file: VirtualFile?, message: String) {
+        report(VERSION_ISSUE_SEVERITY, message, CompilerMessageLocation.create(file?.let(VfsUtilCore::virtualToIoFile)?.path))
     }
 
-    private fun collectRuntimeJarsInfo(classpathJars: List<VirtualFile>): RuntimeJarsInfo {
+    private fun collectRuntimeJarsInfo(classpathJarRoots: List<VirtualFile>): RuntimeJarsInfo {
         val kotlinCoreJars = ArrayList<KotlinLibraryFile>(2)
 
-        for (jar in classpathJars) {
+        for (jarRoot in classpathJarRoots) {
             val manifest = try {
-                val manifestFile = jar.findFileByRelativePath(MANIFEST_MF) ?: continue
+                val manifestFile = jarRoot.findFileByRelativePath(MANIFEST_MF) ?: continue
                 Manifest(manifestFile.inputStream)
             }
             catch (e: Exception) {
                 continue
             }
 
-            val runtimeComponent = getKotlinRuntimeComponent(jar, manifest) ?: continue
+            val runtimeComponent = getKotlinRuntimeComponent(jarRoot, manifest) ?: continue
             val version = manifest.getKotlinLanguageVersion()
 
             if (runtimeComponent == KOTLIN_RUNTIME_COMPONENT_CORE) {
-                kotlinCoreJars.add(KotlinLibraryFile(runtimeComponent, jar, version))
+                val jarFile = VfsUtilCore.getVirtualFileForJar(jarRoot) ?: continue
+                kotlinCoreJars.add(KotlinLibraryFile(runtimeComponent, jarFile, version))
             }
         }
 

compiler/cli/src/org/jetbrains/kotlin/cli/jvm/compiler/KotlinCoreEnvironment.kt

@@ -158,8 +158,8 @@ class KotlinCoreEnvironment private constructor(
         val messageCollector = configuration.get(CLIConfigurationKeys.MESSAGE_COLLECTOR_KEY)
         if (messageCollector != null) {
             val languageVersionSettings = configuration.get(CommonConfigurationKeys.LANGUAGE_VERSION_SETTINGS)
-            val classpathJars = initialRoots.mapNotNull { if (it.type == JavaRoot.RootType.BINARY) it.file else null }
-            JvmRuntimeVersionsConsistencyChecker.checkCompilerClasspathConsistency(messageCollector, languageVersionSettings, classpathJars)
+            val classpathJarRoots = initialRoots.mapNotNull { (file, type) -> if (type == JavaRoot.RootType.BINARY) file else null }
+            JvmRuntimeVersionsConsistencyChecker.checkCompilerClasspathConsistency(messageCollector, languageVersionSettings, classpathJarRoots)
         }
 
         // REPL and kapt2 update classpath dynamically
@@ -206,27 +206,26 @@ class KotlinCoreEnvironment private constructor(
             }
 
     private fun Iterable<ContentRoot>.classpathRoots(): List<JavaRoot> =
-            filterIsInstance(JvmContentRoot::class.java).mapNotNull {
-                javaRoot -> contentRootToVirtualFile(javaRoot)?.let { virtualFile ->
-
-                val prefixPackageFqName = (javaRoot as? JavaSourceRoot)?.packagePrefix?.let {
-                    if (isValidJavaFqName(it)) {
-                        FqName(it)
+            filterIsInstance(JvmContentRoot::class.java).mapNotNull { javaRoot ->
+                contentRootToVirtualFile(javaRoot)?.let { virtualFile ->
+                    val prefixPackageFqName = (javaRoot as? JavaSourceRoot)?.packagePrefix?.let {
+                        if (isValidJavaFqName(it)) {
+                            FqName(it)
+                        }
+                        else {
+                            report(WARNING, "Invalid package prefix name is ignored: $it")
+                            null
+                        }
                     }
-                    else {
-                        report(WARNING, "Invalid package prefix name is ignored: $it")
-                        null
+
+                    val rootType = when (javaRoot) {
+                        is JavaSourceRoot -> JavaRoot.RootType.SOURCE
+                        is JvmClasspathRoot -> JavaRoot.RootType.BINARY
+                        else -> throw IllegalStateException()
                     }
-                }
 
-                val rootType = when (javaRoot) {
-                    is JavaSourceRoot -> JavaRoot.RootType.SOURCE
-                    is JvmClasspathRoot -> JavaRoot.RootType.BINARY
-                    else -> throw IllegalStateException()
+                    JavaRoot(virtualFile, rootType, prefixPackageFqName)
                 }
-
-                JavaRoot(virtualFile, rootType, prefixPackageFqName)
-            }
             }
 
     private fun updateClasspathFromRootsIndex(index: JvmDependenciesIndex) {