From e5d51859bd3d6fd0b286aa6c8e710f33f95b97cd Mon Sep 17 00:00:00 2001
From: Martin Odersky <odersky@gmail.com>
Date: Fri, 28 Mar 2014 13:11:17 +0100
Subject: Added dummy pattern matcher

at the place forseen for the real pattern matcher, so that following
transformations do not have to deal with patterns.
---
 .../tools/dotc/transform/PatternMatcher.scala      | 27 ++++++++++++++++++++++
 1 file changed, 27 insertions(+)
 create mode 100644 src/dotty/tools/dotc/transform/PatternMatcher.scala

(limited to 'src/dotty/tools/dotc/transform/PatternMatcher.scala')

diff --git a/src/dotty/tools/dotc/transform/PatternMatcher.scala b/src/dotty/tools/dotc/transform/PatternMatcher.scala
new file mode 100644
index 000000000..ff25a94de
--- /dev/null
+++ b/src/dotty/tools/dotc/transform/PatternMatcher.scala
@@ -0,0 +1,27 @@
+package dotty.tools.dotc
+package transform
+
+import TreeTransforms._
+import core.DenotTransformers._
+import core.Denotations._
+import core.SymDenotations._
+import core.Contexts._
+import core.Symbols._
+import core.Types._
+import core.Constants._
+import core.StdNames._
+import core.transform.Erasure.isUnboundedGeneric
+import typer.ErrorReporting._
+import ast.Trees._
+
+/** This transform eliminates patterns. Right now it's a dummy.
+ *  Awaiting the real pattern matcher.
+ */
+class PatternMatcher extends TreeTransform {
+  import ast.tpd._
+
+  override def name: String = "patternMatcher"
+
+  override def transformCaseDef(tree: CaseDef)(implicit ctx: Context, info: TransformerInfo): Tree =
+    cpy.CaseDef(tree, Literal(Constant("<eliminated pattern>")), tree.guard, tree.body)
+}
\ No newline at end of file
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