gradle/plugins/src/main/java/apigen/depencency_resolver/ApiModelsDependencyResolver.kt

@@ -33,27 +33,39 @@ class ApiModelsDependencyResolver(
     }
 
     fun getDependenciesFromFiles(files: Collection<File>): Set<File> =
-            files.fold(setOf()) { dependencies, file ->
-                dependencies + getFileDependencies(file)
+            files.fold(setOf()) { foundDependencies, file ->
+                val newDependencies = getFileDependencies(file)
+
+                if (newDependencies.isEmpty()) {
+                    foundDependencies
+                } else {
+                    foundDependencies + getFileDependencies(file)
+                }
             }
 
-    private fun getFileDependencies(file: File): Set<File> {
-        if (handledFiles.contains(file)) {
+    private fun getFileDependencies(sourceFile: File): Set<File> {
+        if (handledFiles.contains(sourceFile)) {
             return emptySet()
         }
 
-        handledFiles.add(file)
+        handledFiles.add(sourceFile)
 
-        val json = JsonSlurper().parse(file) as Map<String, Any?>
+        val json = JsonSlurper().parse(sourceFile) as Map<String, Any?>
         val files = fileParser.getAllTypeNamesFromJson(json)
                 .map { type ->
                     modelTypes[type]
-                            ?: throw IllegalArgumentException("Couldn't resolve $type in ${file.name}")
+                            ?: throw IllegalArgumentException("Couldn't resolve $type in ${sourceFile.name}")
                 }
                 .toSet()
 
-        return files.fold(files) { dependencies, myFile ->
-            dependencies + getFileDependencies(myFile)
+        return files.fold(files) { foundDependencies, file ->
+            val newDependencies = getFileDependencies(file)
+
+            if (newDependencies.isEmpty()) {
+                foundDependencies
+            } else {
+                foundDependencies + newDependencies
+            }
         }
     }
 }