moved the stdlib tests into the same directory as the stdlib, so it works a bit better with maven support in IDEA

libraries/stdlib/test/GenerateStandardLib.kt

@@ -0,0 +1,83 @@
+package org.jetbrains.kotlin.tools
+
+import kotlin.*
+import kotlin.io.*
+import kotlin.util.*
+import java.io.*
+import java.util.*
+
+fun generateFile(outFile: File, header: String, inputFile: File, f: (String)-> String) {
+  println("Parsing $inputFile and writing $outFile")
+
+  outFile.getParentFile()?.mkdirs()
+  val writer = PrintWriter(FileWriter(outFile))
+  try {
+    writer.println("// NOTE this file is auto-generated from $inputFile")
+    writer.println(header)
+
+    val reader = FileReader(inputFile).buffered()
+    try {
+      // TODO ideally we'd use a filterNot() here :)
+      val iter = reader.lineIterator()
+      while (iter.hasNext) {
+        val line = iter.next()
+
+        if (line.startsWith("package")) continue
+
+        val xform = f(line)
+        writer.println(xform)
+      }
+    } finally {
+      reader.close()
+      reader.close()
+    }
+  } finally {
+    writer.close()
+  }
+}
+
+
+/**
+ * Generates methods in the standard library which are mostly identical
+ * but just using a different input kind.
+ *
+ * Kinda like mimicking source macros here, but this avoids the inefficiency of type conversions
+ * at runtime.
+ */
+fun main(args: Array<String>) {
+  var stdlib = File("stdlib")
+  if (!stdlib.exists()) {
+    stdlib = File("../stdlib")
+    if (!stdlib.exists()) {
+      println("Cannot find stdlib!")
+      return
+    }
+  }
+  val srcDir = File(stdlib, "ktSrc")
+  val outDir = File(srcDir, "generated")
+
+
+  // JavaIterables - Generic iterable stuff
+  generateFile(File(outDir, "ArraysFromJavaIterables.kt"), "package kotlin\n\nimport kotlin.util.*", File(srcDir, "JavaIterables.kt")) {
+      it.replaceAll("java.lang.Iterable<T", "Array<T").replaceAll("java.lang.Iterable<T", "Array<T")
+  }
+
+  generateFile(File(outDir, "StandardFromJavaIterables.kt"), "package kotlin\n\nimport kotlin.util.*", File(srcDir, "JavaIterables.kt")) {
+    it.replaceAll("java.lang.Iterable<T", "Iterable<T")
+  }
+
+
+  // JavaCollections - methods returning a collection of the same input size (if its a collection)
+
+  generateFile(File(outDir, "ArraysFromJavaCollections.kt"), "package kotlin", File(srcDir, "JavaCollections.kt")) {
+    it.replaceAll("java.util.Collection<T", "Array<T")
+  }
+
+  generateFile(File(outDir, "JavaUtilIterablesFromJavaCollections.kt"), "package kotlin.util", File(srcDir, "JavaCollections.kt")) {
+    it.replaceAll("java.util.Collection<T", "java.lang.Iterable<T").replaceAll("(this.size)", "")
+  }
+
+  generateFile(File(outDir, "StandardFromJavaCollections.kt"), "package kotlin", File(srcDir, "JavaCollections.kt")) {
+    it.replaceAll("java.util.Collection<T", "Iterable<T").replaceAll("(this.size)", "")
+  }
+}