Merge commit '2c4b142503bd2d871e6818b5cab8c38627d9e4a0' as 'examples/scala-js'

1 files changed, 50 insertions, 0 deletions

diff --git a/examples/scala-js/tools/shared/src/main/scala/scala/scalajs/tools/javascript/TreeDSL.scala b/examples/scala-js/tools/shared/src/main/scala/scala/scalajs/tools/javascript/TreeDSL.scala
new file mode 100644
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+++ b/examples/scala-js/tools/shared/src/main/scala/scala/scalajs/tools/javascript/TreeDSL.scala
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+/*                     __                                               *\
+**     ________ ___   / /  ___      __ ____  Scala.js tools             **
+**    / __/ __// _ | / /  / _ | __ / // __/  (c) 2014, LAMP/EPFL        **
+**  __\ \/ /__/ __ |/ /__/ __ |/_// /_\ \    http://scala-js.org/       **
+** /____/\___/_/ |_/____/_/ | |__/ /____/                               **
+**                          |/____/                                     **
+\*                                                                      */
+
+
+package scala.scalajs.tools.javascript
+
+import scala.language.implicitConversions
+
+import scala.scalajs.ir.Position
+
+import Trees._
+
+private[javascript] object TreeDSL {
+  implicit class TreeOps(val self: Tree) extends AnyVal {
+    /** Select a member */
+    def DOT(field: Ident)(implicit pos: Position): DotSelect =
+      DotSelect(self, field)
+
+    /** Select a member */
+    def DOT(field: String)(implicit pos: Position): DotSelect =
+      DotSelect(self, Ident(field))
+
+    // Some operators that we use
+
+    def ===(that: Tree)(implicit pos: Position): Tree =
+      BinaryOp("===", self, that)
+    def ===(that: String)(implicit pos: Position): Tree =
+      BinaryOp("===", self, StringLiteral(that))
+
+    def unary_!()(implicit pos: Position): Tree =
+      UnaryOp("!", self)
+    def &&(that: Tree)(implicit pos: Position): Tree =
+      BinaryOp("&&", self, that)
+    def ||(that: Tree)(implicit pos: Position): Tree =
+      BinaryOp("||", self, that)
+
+    // Other constructs
+
+    def :=(that: Tree)(implicit pos: Position): Tree =
+      Assign(self, that)
+  }
+
+  def typeof(expr: Tree)(implicit pos: Position): Tree =
+    UnaryOp("typeof", expr)
+}