Move barstools tapeout src to tools/tapeout

tools/tapeout/src/main/scala/transforms/utils/YamlHelpers.scala

@@ -0,0 +1,23 @@
+package barstools.tapeout.transforms.utils
+
+import firrtl.FileUtils
+import net.jcazevedo.moultingyaml._
+
+import java.io.File
+
+class YamlFileReader(resource: String) {
+  def parse[A](file: String = "")(implicit reader: YamlReader[A]): Seq[A] = {
+    // If the user doesn't provide a Yaml file name, use defaults
+    val yamlString = file match {
+      case f if f.isEmpty =>
+        // Use example config if no file is provided
+        val stream = FileUtils.getTextResource(resource)
+        stream
+      case f if new File(f).exists =>
+        FileUtils.getText(f)
+      case _ =>
+        throw new Exception("No valid Yaml file found!")
+    }
+    yamlString.parseYamls.map(x => reader.read(x))
+  }
+}