1 files changed, 32 insertions, 0 deletions
diff --git a/src/parser-combinators/scala/util/parsing/combinator/syntactical/StandardTokenParsers.scala b/src/parser-combinators/scala/util/parsing/combinator/syntactical/StandardTokenParsers.scala
new file mode 100644
index 0000000000..5b9d14c9a7
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+++ b/src/parser-combinators/scala/util/parsing/combinator/syntactical/StandardTokenParsers.scala
@@ -0,0 +1,32 @@
+/*                     __                                               *\
+**     ________ ___   / /  ___     Scala API                            **
+**    / __/ __// _ | / /  / _ |    (c) 2006-2013, LAMP/EPFL             **
+**  __\ \/ /__/ __ |/ /__/ __ |    http://scala-lang.org/               **
+** /____/\___/_/ |_/____/_/ | |                                         **
+**                          |/                                          **
+\*                                                                      */
+
+
+package scala
+package util.parsing
+package combinator
+package syntactical
+
+import token._
+import lexical.StdLexical
+import scala.language.implicitConversions
+
+/** This component provides primitive parsers for the standard tokens defined in `StdTokens`.
+*
+* @author Martin Odersky, Adriaan Moors
+ */
+class StandardTokenParsers extends StdTokenParsers {
+  type Tokens = StdTokens
+  val lexical = new StdLexical
+
+  //an implicit keyword function that gives a warning when a given word is not in the reserved/delimiters list
+  override implicit def keyword(chars : String): Parser[String] =
+    if(lexical.reserved.contains(chars) || lexical.delimiters.contains(chars)) super.keyword(chars)
+    else failure("You are trying to parse \""+chars+"\", but it is neither contained in the delimiters list, nor in the reserved keyword list of your lexical object")
+
+}