1 files changed, 53 insertions, 0 deletions
diff --git a/tools/shared/src/main/scala/scala/scalajs/tools/classpath/builder/AbstractJarLibClasspathBuilder.scala b/tools/shared/src/main/scala/scala/scalajs/tools/classpath/builder/AbstractJarLibClasspathBuilder.scala
new file mode 100644
index 0000000..77f8509
--- /dev/null
+++ b/tools/shared/src/main/scala/scala/scalajs/tools/classpath/builder/AbstractJarLibClasspathBuilder.scala
@@ -0,0 +1,53 @@
+/*                     __                                               *\
+**     ________ ___   / /  ___      __ ____  Scala.js tools             **
+**    / __/ __// _ | / /  / _ | __ / // __/  (c) 2013-2014, LAMP/EPFL   **
+**  __\ \/ /__/ __ |/ /__/ __ |/_// /_\ \    http://scala-js.org/       **
+** /____/\___/_/ |_/____/_/ | |__/ /____/                               **
+**                          |/____/                                     **
+\*                                                                      */
+
+
+package scala.scalajs.tools.classpath.builder
+
+import scala.collection.mutable
+
+import scala.scalajs.tools.io._
+import scala.scalajs.tools.jsdep.JSDependencyManifest
+import scala.scalajs.tools.classpath._
+
+/** reads a ScalaJS library JAR into a CP
+ *  - IR files go to scalaJSCode
+ *  - JS files go to availableLibs
+ *  - Reads a potential top-level JS_DEPENDENCIES file
+ */
+trait AbstractJarLibClasspathBuilder extends JarTraverser {
+
+  private val irFiles = mutable.ListBuffer.empty[VirtualScalaJSIRFile]
+  private val jsFiles = mutable.Map.empty[String, VirtualJSFile]
+  private var dependency: Option[JSDependencyManifest] = None
+
+  def build(jar: File): PartialClasspath = {
+    val v = traverseJar(jar)
+    new PartialClasspath(dependency.toList,
+        jsFiles.toMap, irFiles.toList, Some(v))
+  }
+
+  override protected def handleIR(relPath: String,
+      ir: => VirtualScalaJSIRFile): Unit = {
+    // We don't need to implement shadowing here: We have only a single JAR
+    irFiles += ir
+  }
+
+  override protected def handleJS(js: => VirtualJSFile): Unit = {
+    val file = js
+    if (!jsFiles.contains(file.name))
+      jsFiles += file.name -> file
+  }
+
+  override protected def handleDepManifest(m: => JSDependencyManifest): Unit = {
+    if (dependency.isDefined)
+      sys.error("A JAR cannot have multiple JS dependency manifests")
+    dependency = Some(m)
+  }
+
+}