Minor, invert JavaModule.isBinary -> isSourceModule

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

@@ -161,7 +161,9 @@ class ClasspathRootsResolver(
     }
 
     private fun addModularRoots(modules: List<JavaModule>, result: MutableList<JavaRoot>) {
-        val sourceModules = modules.filterIsInstance<JavaModule.Explicit>().filterNot(JavaModule::isBinary)
+        // In current implementation, at most one source module is supported. This can be relaxed in the future if we support another
+        // compilation mode, similar to java's --module-source-path
+        val sourceModules = modules.filterIsInstance<JavaModule.Explicit>().filter(JavaModule::isSourceModule)
         if (sourceModules.size > 1) {
             for (module in sourceModules) {
                 report(ERROR, "Too many source module declarations found", module.moduleInfoFile)

compiler/cli/src/org/jetbrains/kotlin/cli/jvm/modules/CliJavaModuleResolver.kt

@@ -32,12 +32,12 @@ class CliJavaModuleResolver(
         private val systemModules: List<JavaModule.Explicit>
 ) : JavaModuleResolver {
     init {
-        assert(userModules.count { !it.isBinary } <= 1) {
+        assert(userModules.count(JavaModule::isSourceModule) <= 1) {
             "Modules computed by ClasspathRootsResolver cannot have more than one source module: $userModules"
         }
     }
 
-    private val sourceModule: JavaModule? = userModules.firstOrNull { !it.isBinary }
+    private val sourceModule: JavaModule? = userModules.firstOrNull(JavaModule::isSourceModule)
 
     private fun findJavaModule(file: VirtualFile): JavaModule? {
         if (file.fileSystem.protocol == StandardFileSystems.JRT_PROTOCOL) {