combinator1 parser changes + examples added

1 files changed, 30 insertions, 0 deletions

diff --git a/docs/examples/parsing/ListParsers.scala b/docs/examples/parsing/ListParsers.scala
new file mode 100644
index 0000000000..f503a0139f
--- /dev/null
+++ b/docs/examples/parsing/ListParsers.scala
@@ -0,0 +1,30 @@
+package examples.parsing
+
+import scala.util.parsing.combinator1.syntactical.StandardTokenParsers
+
+object ListParsers extends StandardTokenParsers {
+  lexical.delimiters ++= List("(", ")", ",")
+
+  def expr: Parser[Any] = "(" ~ exprs ~ ")" | ident | numericLit
+  def exprs: Parser[Any] = expr ~ rep ("," ~ expr)
+
+  def main(args: Array[String]) {
+    val tokens = new lexical.Scanner(args(0))
+    println(args(0))
+    println(phrase(expr)(tokens))
+  }
+}
+
+object ListParsers1 extends StandardTokenParsers {
+  lexical.delimiters ++= List("(", ")", ",")
+
+  def expr: Parser[Any] = "(" ~> exprs <~ ")" | ident | numericLit
+
+  def exprs: Parser[List[Any]] = expr ~ rep ("," ~> expr) ^^ { case x ~ y => x :: y }
+
+  def main(args: Array[String]) {
+    val tokens = new lexical.Scanner(args(0))
+    println(args(0))
+    println(phrase(expr)(tokens))
+  }
+}