1 files changed, 42 insertions, 0 deletions
diff --git a/ir/src/main/scala/scala/scalajs/ir/Position.scala b/ir/src/main/scala/scala/scalajs/ir/Position.scala
new file mode 100644
index 0000000..3b6d0a2
--- /dev/null
+++ b/ir/src/main/scala/scala/scalajs/ir/Position.scala
@@ -0,0 +1,42 @@
+/*                     __                                               *\
+**     ________ ___   / /  ___      __ ____  Scala.js IR                **
+**    / __/ __// _ | / /  / _ | __ / // __/  (c) 2014, LAMP/EPFL        **
+**  __\ \/ /__/ __ |/ /__/ __ |/_// /_\ \    http://scala-js.org/       **
+** /____/\___/_/ |_/____/_/ | |__/ /____/                               **
+**                          |/____/                                     **
+\*                                                                      */
+
+
+package scala.scalajs.ir
+
+final case class Position(
+    /** Source file. */
+    source: Position.SourceFile,
+    /** Zero-based line number. */
+    line: Int,
+    /** Zero-based column number. */
+    column: Int
+) {
+  def show: String = s"$line:$column"
+
+  def isEmpty: Boolean = {
+    source.getScheme == null && source.getRawAuthority == null &&
+    source.getRawPath == "" && source.getRawQuery == null &&
+    source.getRawFragment == null
+  }
+
+  def isDefined: Boolean = !isEmpty
+
+  def orElse(that: => Position): Position = if (isDefined) this else that
+}
+
+object Position {
+  type SourceFile = java.net.URI
+
+  object SourceFile {
+    def apply(f: java.io.File): SourceFile = f.toURI
+    def apply(f: String): SourceFile = new java.net.URI(f)
+  }
+
+  val NoPosition = Position(SourceFile(""), 0, 0)
+}