Allow implicit modifier on single-parameter fun...

Allow implicit modifier on single-parameter function literals. Fixes and
closes #1492.

2 files changed, 23 insertions, 1 deletions

diff --git a/src/compiler/scala/tools/nsc/ast/parser/Parsers.scala b/src/compiler/scala/tools/nsc/ast/parser/Parsers.scala
index a4f228cffb..356f4621a4 100644
--- a/src/compiler/scala/tools/nsc/ast/parser/Parsers.scala
+++ b/src/compiler/scala/tools/nsc/ast/parser/Parsers.scala
@@ -957,7 +957,7 @@ self =>
      */
     def statement(location: Int): Tree = expr(location) // !!! still needed?
 
-    /** Expr       ::= (Bindings | Id | `_')  `=>' Expr
+    /** Expr       ::= (Bindings | [`implicit'] Id | `_')  `=>' Expr
      *               | Expr1
      *  ResultExpr ::= (Bindings | Id `:' CompoundType) `=>' Block
      *               | Expr1
@@ -1057,6 +1057,14 @@ self =>
         atPos(in.skipToken()) {
           Throw(expr())
         }
+      case IMPLICIT =>
+        val start = in.skipToken()
+        val param0 = convertToParam(atPos(in.offset)(Ident(ident())))
+        val param = treeCopy.ValDef(param0, param0.mods | Flags.IMPLICIT, param0.name, param0.tpt, param0.rhs)
+        atPos(start, in.offset) {
+          accept(ARROW)
+          Function(List(param), if (location != InBlock) expr() else block())
+        }
       case _ =>
         var t = postfixExpr()
         if (in.token == EQUALS) {
diff --git a/test/files/pos/implicits.scala b/test/files/pos/implicits.scala
index aeb6591507..485d24101e 100644
--- a/test/files/pos/implicits.scala
+++ b/test/files/pos/implicits.scala
@@ -1,3 +1,17 @@
+// #1435
+object t1435 {
+  implicit def a(s:String):String = error("")
+  implicit def a(i:Int):String = error("")
+  implicit def b(i:Int):String = error("")
+}
+
+class C1435 {
+  val v:String = {
+    import t1435.a
+    2
+  }
+}
+
 // #1579
 object Test1579 {
   class Column