--- a/src/Pure/Isar/outer_parse.scala Sat May 15 22:05:49 2010 +0200
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,77 +0,0 @@
-/* Title: Pure/Isar/outer_parse.scala
- Author: Makarius
-
-Generic parsers for Isabelle/Isar outer syntax.
-*/
-
-package isabelle
-
-import scala.util.parsing.combinator.Parsers
-
-
-object Outer_Parse
-{
- /* parsing tokens */
-
- trait Parser extends Parsers
- {
- type Elem = Outer_Lex.Token
-
- def filter_proper = true
-
- private def proper(in: Input): Input =
- if (in.atEnd || !in.first.is_ignored || !filter_proper) in
- else proper(in.rest)
-
- def token(s: String, pred: Elem => Boolean): Parser[Elem] = new Parser[Elem]
- {
- def apply(raw_input: Input) =
- {
- val in = proper(raw_input)
- if (in.atEnd) Failure(s + " expected (past end-of-file!)", in)
- else {
- val token = in.first
- if (pred(token)) Success(token, proper(in.rest))
- else
- token.text match {
- case (txt, "") =>
- Failure(s + " expected,\nbut " + txt + " was found", in)
- case (txt1, txt2) =>
- Failure(s + " expected,\nbut " + txt1 + " was found:\n" + txt2, in)
- }
- }
- }
- }
-
- def not_eof: Parser[Elem] = token("input token", _ => true)
- def eof: Parser[Unit] = not(not_eof)
-
- def atom(s: String, pred: Elem => Boolean): Parser[String] =
- token(s, pred) ^^ (_.content)
-
- def keyword(name: String): Parser[String] =
- atom(Outer_Lex.Token_Kind.KEYWORD.toString + " \"" + name + "\"",
- tok => tok.kind == Outer_Lex.Token_Kind.KEYWORD && tok.content == name)
-
- def name: Parser[String] = atom("name declaration", _.is_name)
- def xname: Parser[String] = atom("name reference", _.is_xname)
- def text: Parser[String] = atom("text", _.is_text)
- def ML_source: Parser[String] = atom("ML source", _.is_text)
- def doc_source: Parser[String] = atom("document source", _.is_text)
- def path: Parser[String] = atom("file name/path specification", _.is_name)
-
- private def tag_name: Parser[String] =
- atom("tag name", tok =>
- tok.kind == Outer_Lex.Token_Kind.IDENT ||
- tok.kind == Outer_Lex.Token_Kind.STRING)
-
- def tags: Parser[List[String]] = rep(keyword("%") ~> tag_name)
-
-
- /* wrappers */
-
- def parse[T](p: Parser[T], in: Outer_Lex.Reader): ParseResult[T] = p(in)
- def parse_all[T](p: Parser[T], in: Outer_Lex.Reader): ParseResult[T] = parse(phrase(p), in)
- }
-}
-